2013年7月31日星期三

Cement mixer operation

1, in the concrete block machine must be checked before the job, make sure steering,Brakes, lights, sensitive and effective signaling system, mixer truck rollers and slip No crack and severe damage grooves, the stirring blades wear in the normal range, the bottom Between the disk and the sub-frame U-bolt connection is good.
2, to understand the construction requirements and site conditions. Choose Driving Directions and parking places Point.
3, on the roads in the community must abide by traffic rules. Turning radius should Meet the specification requirements, steel cement silo more than 15km. Stop speed of not Greater than 5km.
4, operation, non-touch rotating rollers and tires.
5, in the concrete mixer reversing discharging, must obey the command, note Personnel around, abnormal immediately stop.
6, is prohibited in the high-voltage lines under concrete mixer cleaning operations.

Concrete type selection

Concrete mixers are mainly three kinds of choices that the amount and duration according to project requirements Selection, according to the design of the concrete type selection, concrete batching plant according to the concrete characteristics And consistency aspects of choice.
1, according to the amount and duration of construction required to select concrete projects large and long duration When should use medium or large stationary concrete mixer or mixing station.If a small amount of concrete and short duration, should use small mobile stir Mixing machine.
2, according to the design of the concrete mix concrete for the selected type of plastic or semi-plastic Type,Cement silo self-loading mixer. Such as mixing concrete, high strength,Dry hard or lightweight concrete, should use compulsory mixer.
3, according to the composition characteristics and consistency of concrete options such as mixing concrete terms Consistency small and aggregate size is large, larger capacity should be selected from the fall mixing Machine. Such as mixing consistency large and large concrete aggregate size, the appropriate selection stir Drum speed faster self-loading mixer. Aggregate size as large and small consistency, Should use compulsory mixer or in small-capacity cone reversal discharging Mixer.

Concrete mixer Procedure

1, the column on the function toggle switch to position "Auto" position, press Start switch on the controller, Concrete mixing plant will run automatically control their own Operation.
2, the whole process has finished running automatically stop running the project for the Transit stop, press the stop button can then be restarted.
3, press the start button, the display shows the start time, slow, Sand, fast, stop, fast, running lights shining on time.
4, automatic control, you must put all the manual functions appropriated stop switch Position.
Operational considerations:
1, Concrete Mixing Truck by measuring the regulation blade and the gap between the pot wall shall 3mm ± 2mm, If the gap tolerance, the vertical position of the blade can be adjusted to achieve the specified range Wai.
2, stirring after each use leaf, pot should be clean, Electrical DivisionPoints should avoid strenuous vibration, away from water and heat, pay attention to dust.Know the mixer to use, in order to better improve project efficiency.

Concrete mixer settings

1, concrete mixer should be set at a flat position, with square wooden paving ago Rear axle, so that the tire resting high overhead, avoid walking in motion  occurs.2, concrete mixing machine should implement two leakage protection, power supply before work Once connected, you must carefully check that pass through the empty test switch before the Purposes. Mixing cylinder speed should be tested during commissioning is appropriate, under normal circumstances, Empty weight speed car (after loading) slightly faster 2 to 3 rpm, such as a difference of more, Wheel should be adjusted to the ratio of the transmission gear.
3, mixing drum shall comply with the direction of rotation direction of the arrow, as inconsistent with reality, Electrical wiring should be corrected.
4, check the drive clutch and brakes are flexible and reliable, with rope No damage, track pulley is good, around various parts of the barrier Lubrication and so on.
5, after the boot, always pay attention to the various components of concrete mixer is functioning Normal. Shutdown, always check whether concrete block making machine blade bent,Has knocked out or loose screws.
6, when the concrete mixing is completed or anticipated stop more than 1h, in addition to the more than expected Net, the application of gravel and water poured into the shaking barrel, boot rotate the stick Rinse the mortar on the barrel after all unloading. Barrel may not have water To avoid the barrel and leaf rust. Should also be cleaned outside the mixing tube fouling,So that the machinery kept clean intact.
7, after work and shut down when not in use, you should wind up power, and lock the switch box To ensure safety.

Compulsory mixer

Compulsory mixer from the early 1950s after the rise, has been rapid development and promotion. First there is the disc vertical shaft forced cement mixing machine. This mixer is divided into two kinds of turboprop and planets. After the 1870s, with the application of lightweight aggregate, there has been a circular groove horizontal shaft compulsory mixer, which in turn sub-single-shaft and twin-shaft two kinds of lying, both self-loading and forced two kinds of mixing characteristics . Its stirring blade speed is small, good wear resistance and low energy consumption, faster development. Forced concrete mixer mixing barrel is equipped with a stirring blade pivot arm, adding mix barrel materials, strong agitation in mixing blades, the formation of cross-logistics. Since the fall of this agitation than the role of a strong agitation, mainly suitable for mixing dry concrete.
Concrete block machine equipped with a spiral mixing blades, respectively mix of various materials by continuous weighing and sent to the mixer, mixing a good concrete continuously outward from the discharge end of the unloading. This mixer mixing time is short, productivity is high, the development of attention.
With concrete materials and construction processes of development, they have appeared many new structural concrete mixer, such as steam heated mixer, supercritical speed mixer, sonic mixer, without stirring blade wobble plate mixers and secondary mixing concrete mixer and so on.

2013年7月30日星期二

concrete pump mainstream technology

Domestic truck mounted concrete boom started late because the last two years have strengthened domestic enterprises technology introduction and quality control, design and development of a proprietary arm mounted concrete block making machine, technological innovation has become the domestic arm mounted concrete pump development boosters. Major component technology trends also represent the domestic arm mounted concrete pump vehicle development. Arm mounted concrete pump truck to the specifications and more comprehensive, higher grades, the direction of the cloth longer boom, boom 37m from the past to the mainstream, a gradual transition to 42 ~ 45m mainly to the direction of 47 ~ 56m . Improve equipment energy efficiency, Concrete mixing plant performance is a big trend, gradually replace the engine cooling water from the cooling air emission standards to Euro Ⅱ I mostly or Euro IV standards. Self-test, self-protection, self-adjustment and multi-sensor technology, constant power control technology and EPS / EBC and GPS technology will become the mainstream of development; while driving in will be more humane.

concrete pump development

Germany in 1927, pioneered the pumping concrete construction technology, is one of Europe's fastest growing technology pumping concrete country, to 1973 pumping concrete penetration rate has reached 40% to 50%. Concrete block machine and Japan after the introduction of German technology development is very fast, but also has become a country with the highest penetration rate of pumping concrete. 1950s, China produced over machinery concrete pumps, because of the low level of technology, production volume rarely, in the early 1980s, made concrete pump to maintain the total amount was less than 200 units, arm mounted concrete pumps car is a blank. In the meantime, some of our major concreting works, in large part depends largely on imported equipment. From the early 1980s, after 20 years of efforts, China arm mounted concrete pump made great development, design standards, manufacturing capacity has been greatly improved, some of the production of concrete pumping technology has reached the world advanced level. According to statistics, concrete mixing machine pump manufacturer has reached more than 100, located in the country. Although concrete pump largely replaced imports, but due to the manufacturer's technical standards, production technology, production capacity is uneven, the gap is larger products. Current domestic production capacity of the strongest companies are Sany, Zoomlion, Xuzhou Heavy and Fukuda heavy machinery as the representative of the first tier, second tier in Heino, Liaoning, Hubei, Construction Machinery, Anhui and Shanghai, Singapore and Malaysia HONGDELI other enterprises, their production accounted for over 90% of the entire industry. International brands to PUTZmeister and Schwing represented manufacturers.

concrete pump Overview

Concrete pump Concrete pouring along the pipeline continuous conveyor to face a concrete conveying machinery. Pan pump concrete pump is installed in the vehicle's chassis and hydraulic folding (or called booms) pipeline to transport concrete. With luffing jib, steel cement silo and turn three actions within the scope of their activities can be arbitrarily changed concrete pouring position. In the on-site construction, such as high-rise buildings, dams, large equipment base and piers, culverts, tunnels, and other concrete structures, field water capacity is often large. Sometimes even a continuous pour thousands of cubic meters. Therefore, a reasonable construction organization, appropriate use of concrete and irrigation machinery and equipment is very important. Concrete pump concrete pump machinery ideal one, it can accomplish a continuous horizontal transport and vertical transport and irrigation. Production of ready-mixed concrete pumping construction combined with the use of an intermediate transport concrete mixer truck, enabling continuous pumping and cement mixing machine. This is the site for some stenosis and obstructions of the construction site, using other transportation equipment is difficult to directly adjacent construction works, concrete pump is more effective role to play. Pumping long distance transport, the transport volume per unit of time, can satisfy the large concrete construction requirements. Concrete pump has a high degree of mechanization, high efficiency, occupy less manpower, low labor intensity and the advantages of simple construction organization, has been in the country has been widely applied.

pipeline washing process is as follows

a. pumping as much as possible before the end of the hopper fine stone concrete pump end.
b. reverse pump action several times, concrete block machine the pressure pipe, cut off the power.
c. opening paragraph adjustable tube and discharge door, the hopper, adjustable pipe distribution valve box and complete removal of residual concrete.
d. the first root straight pipe mouth pulled out some of the concrete, into the Asphalt Mixing Plant sponge ball before the ball stuffed with sponge soaked in water cement bag paper can also play a very good effect.
e. connected to the adjustable tube, close the discharge gate.
f. directly to the hopper water.
g. pumping.

gas pipeline wash Precautions

- Compressed air pressure shall not exceed 0.7MPa.
- Valve can not suddenly wide open, to concrete batching plant, careful observation, and only when the concrete can flow smoothly only when wide open.
- If you find purge does not move, you should shut the intake valve, and then slowly open the exhaust valve deflated, and then try to segment cleaning.
- Break purge should be blown off near the discharge end of the section of pipe, then the pipe and blowing air Wheel Loader not connected to the remaining part of the purge.
- Gas washing, the staff should not be near the discharge spout, pipe sharp turn (if the 90 ° bend) and compressed air fittings.

Cleaning of pipeline

Gas pipeline wash work steps
a. piping should be equipped with stop valve, stop flow plate should be plugged to prevent vertical or inclined tube Concrete Mixing Truck.
b. the first root straight pipe mouth pulled out some of the concrete, connected to gas washing, subs should advance into the inner water-soaked sponge balls, put on the joints, exhaust valve and compressed air hoses.
c. the end of the pipe fitted safety cap to prevent concrete spraying wounding.
d. slowly open the air inlet valves, compressed air will push out the sponge balls and concrete, if equipped with a stop valve piping should be hit in the pass position, then open the valve.
e. When the pipe in Concrete mixer has been completely drained, and sponge balls have also been fired immediately when the gas washing is completed. Then air inlet valves should be closed, and then removing various fittings.

How not to damage the concrete pump

Vacuum gauge readings greater than 0.04Mpa prohibited when operating, otherwise it may damage the main pump;
Electrical control box use, installation, wiring by professionals;
Concrete mixing plant concrete hopper must be higher than the agitator shaft, to avoid the inhalation of air caused by concrete splash;
The end of the transfer pump pumping operations expenditure legs, received the first leg, put down the branch to wheel, and then close the front leg;
Operator (concrete pump pumps work) should be required to record the work of the concrete pump.
Concrete pump before use to effectively fixed, the support from four feet off the ground so that the tire, or remove tires. To check the top of the pump hopper and chute support situation and ensure the stable and reliable. Screw Conveyor attention pumps overturning caused casualties!
?Note that when pumping concrete spatter or other objects into the eyes causing eye injury!
Concrete pump power wiring must have leakage protection switch, you should always check the electric elements are working properly, the cable is damaged, to prevent electric shock resulting in injury or death!
To ensure reliable connection pipelines, regular maintenance, to prevent pipe card, red open clogged pipes burst or cause personal injury!
Prohibited in the hydraulic system is not open when unloading or loosening hydraulic fittings hydraulic flange bolts, high-pressure hydraulic oil injection can cause a lot of damage!
Pump machine work, prohibited hand into hoppers, tanks, reversing cylinders and other moving parts of the region there is need to check the operation should be shut down!

2013年7月29日星期一

concrete pump operation

(1) can be towed concrete pump line using the motor vehicle towed, but not carrying any cargo, towing speed must not exceed 8km / h;
(2) concrete pump hydraulic system pressure relief valve shall comply with specification requirements, the user can not adjust to change;
(3) In the cold season construction concrete pumps have freezing measures;
(4) In the hot season, construction, concrete pump to prevent the oil temperature is too high. When the temperature reaches 70 ℃, should stop running or take other measures to cool down;
(5) pumping concrete is completed, should be promptly put the hopper, S valves, concrete cylinders, transmission lines clean. After washing pump, accumulator pressure should be released, switch off the power switch is in the stop or the open position;
(6)Concrete Mixing Truck shall not climb or ride in the pipeline, in the high-altitude operations should definitely be avoided;
(7) After pumping concrete cleaning Previously, a number of anti-pump stroke to reduce pressure inside the pipeline to avoid accidents;
(8) Construction site safety and accident prevention should be set up devices. Such as: instructions and warning signs, fences, steel cement silo, etc., while the pump is set up around the work area must (not less than 1 meter), non-operators prohibition of unauthorized trespassing. Regular replacement within three meters away from the operator's transmission pipeline, to be fastened with wood or metal partition screen protection;

concrete pipes precautions

(A) the installation and design of pipes, try to avoid 90. And the S-shaped bend.
Try not to use obvious pit pump tubing, Concrete mixing plant in order to reduce the resistance, to prevent clogging. Should always check the pump tube, pump tube in one direction if a greater degree of wear and tear, and timely use of the tube switching position, if the thickness of thin tubing should be promptly replaced with new pipe to prevent the pump tube during operation off the hook, or the replacement of the pump tube longer as a result of plugging phenomenon.
(2) In order to ensure the continuity of operations of pumping concrete, concrete pouring to ensure the quality of jobs in the interval of time not too long, to prevent clogging.
If for any reason a longer time interval, every 20 minutes or so should initiate a pump or reverse, forward pump Screw Conveyor, the circulation pump is necessary to prevent clogging.
(3) can pump pumping concrete should meet the requirements, if necessary, to determine by trial and pump pumping concrete mix.
Should first determine the maximum size of coarse aggregate and conveying diameter ratio.
Pumping height of 50m or less, not more than 1:3 for gravel, pebbles for not more than 1:2.5; pumping height of 50 ~ 100m, it is desirable in the range of 1:3 to 1:4; pumping height at 100m above, should be between 1:4 to 1:5. Flakiness particle content of not more than 10%. 3.3.2 Different pumping height, the slump of the concrete pump according to one selection.

valve blockage at

Valve at the blockage is formed gradually, mainly due to pumping concrete finish after washing with high pressure water is not timely, resulting in concrete left in the tube, gradually thickening Over time, the accumulation of consolidation, causing blockage.
Remedy: After pumping concrete, be sure to use Asphalt Mixing Plant water to rinse pump and S tubes. When flushing is invalid, brazing can be knocked to the residue removed, until thoroughly clean.
Remedy: When plugging should be taken immediately repeated, reverse pump method, the pump outlet gradually sucked back into the hopper of the concrete mix and steel cement silo. Also used wooden hammer percussion methods, combined with the positive and reverse pump, making it clear; when the above methods fail, indicating the severity of the congestion. Identify blockage after paragraph, the tube removed, with high wind or percussion hammer or high-pressure water wash, to be thoroughly cleaned after the pipeline to continue pumping concrete followed by good work.

concrete pipeline blockage

When the delivery pressure was gradually increased, while the hopper material level does not drop, Concrete block machine, the pump vibration occurs, the pipeline is accompanied by intense vibration and displacement, can be determined a pipe plug.
Blocking parts of the judgment: concrete mixing machine occurs in the pipe, cone, and the vibration of the lot. At this point, the available Hammers beat along the pipeline, sounds boring office blockages; sound crisp office as normal. With the ears, there is rustling as normal, with shrill sound of blockages.

concrete pipeline blockage

When the delivery pressure was gradually increased, while the hopper material level does concrete block machine, no feed pipe outlet, the pump vibration occurs, the pipeline is accompanied by intense vibration and cement mixing machine, can be determined a pipe plug.
Blocking parts of the judgment: clogging generally occurs in the pipe, cone, and the vibration of the lot. At this point, the available Hammers beat along the pipeline, sounds boring office blockages; sound crisp office as normal. With the ears, there is rustling as normal, with shrill sound of blockages.

concrete delivery pipe distribution valve at the outlet of the blockage

Spout blockage, usually sudden interruption of the pumping system action, and there is abnormal sound, the device has a strong vibration, but no corresponding pipe vibration.
Remedy: Pour grout into the hopper, Concrete Mixing Truck and reverse start the pump, forcing the passage open. If this method is not dare, only artificial exclusion, remove the connecting tube, remove the valve debris.
Blockage at the inlet
Inlet blockage, concrete batching plant and hydraulic systems were normal, no abnormal sound and vibration, the hopper has a larger aggregate or agglomerate, stuck at the inlet or arched.
Remedy: Reverse operation of the pump in order to destroy the caking of the concrete hopper back again stirring, then the forward pumping. If you do not work, you need to manually clean up, be excluded.

2013年7月28日星期日

Maintenance of concrete mixers

Reasonable assurance protection period. Vehicle protection cycle is protected from automobile mileage Cement silo. Owners in the practical application process, should refer to the automobile factory referrals protection period, contact the car itself, and utilizing the skills prerequisite for the protection period for appropriate adjustments. Generally speaking, the new car at the premise of superior road use, without too frequently protected to manufacturers protection rules as the upper limit cycle can; while poorer automotive skills, or use bad premise, it should be appropriate to shorten the protection period. Make full use of free testing. Concrete mixer manufacturer launched free testing exercise on the length often beneficial owners, owners can apply these to detect motion like cars for specific medical examination for real-time detect and eliminate some of the potential problems, and then eliminating the future be able to render high maintenance protection costs. Little maintenance as possible collapse of assembly. cement mixing machine Lord have this feeling, like a car crash repairs after assembly rampant tidy, premature entry into the vehicle maintenance period. The primary reason for showing this scene touched the assembly of repair work skills and other aspects of quality accessories. Thus, it is best to prevent the collapse of maintenance assembly, applying the skills of advanced protective equipment and tricks to avoid demolition of the car for protection against the car assembly and parts do not want to damage the formation and progress to protect the quality and reduce maintenance total cost.

concrete mixer truck fault car handling

Caused by the mixing drum mixer can not turn generally have the following two conditions: (1) hydraulic system or engine failure; (2) motor malfunction. The treatment methods are as follows.
1) hydraulic system or engine failure treatment:
(1) Open the mixing tube manhole cover, rotating Song Mada on the high pressure hose fittings, Concrete block machine drum rotating mixing drum manholes oblique, the concrete is discharged from the mixing tube manholes;
(2) the failure of the high pressure hose from the motor vehicle is removed, the rescue with a high-pressure hose connected to the other end of the pump on the rescue vehicles and emergency use of the return pipe terminating in a motor drain fault car mouth, back to the other end of the tubing in the rescue vehicle pump oil return port, the use of rescue vehicles to control the rotation of Drum fault car will concrete discharge.
After field tests we found that all of the tools in the production plants complete the case, using the second method takes about 1h, such as on site may take longer, so we recommend using cement mixing machine discharged concrete.
2) motor fails, the processing is relatively simple, can remove the rescue vehicles mounted on a motor vehicle failure, then all tubing connected, start rescue vehicles can be mixed with concrete barrel discharged.
In short, for the mixer, the failure should be promptly determine why the failure occurred, and take effective measures to mix concrete barrel discharged after troubleshooting.

concrete mixer truck with drive shaft

Concrete Mixing Truck working environment is bad, in the course pay attention to the drive shaft lubrication. We repair process mixer repeatedly received user feedback, the drive shaft with a little long to damage the entire cross shaft or drive shaft scrapped. During the inspections found that this situation is due to the user inadvertently timely manner concrete batching plant to the propeller shaft lubrication. Not timely lubrication will cause the drive shaft cross shaft dry friction, not a long time will make the cross shaft scrapped, thereby causing the entire root drive shaft scrapped.

concrete mixer truck discharge problem of uneven

Uniformity of the material issue is an important indicator of performance mixer, which directly affects the quality of the project. Transporting concrete, concrete batching plant speed should be controlled at 2 ~ 5r/min, and the total number of revolutions mixing tube at 300 rpm inside. If the long distance transport of concrete or slump is large, the material should be preceded by the fast rotation mixing drum 5 to 10 rpm, so that the concrete can stir inside, so the uniformity of the material will be greatly improved. If the way of concrete dehydration, water should be added to the site adjustments, steel cement silo. Of course, this situation should be avoided, since this would not be the quality control of concrete. Some users do not pay attention when using speed control during transport, excessive fuel consumption will increase, too small will result in concrete segregation. Should therefore be strictly required to control the speed of mixing drum, in order to facilitate and improve efficiency.

concrete mixer truck used roller

Roller mixer truck is one of the main load-bearing components, within the concrete mixing drum and the weight mainly by supporting roller and gear, and because the site traffic limit, which the force is uneven, there is the impact of The. Asphalt Mixing Plant, to limit mixing drum beat, in order to reduce the impact on the roller. Current models have two forms, one plus one pull with the mixing drum pull; Second, in the mixer after the upper end of the stent plus stopper. In either form, in daily use should pay attention to maintenance and repair, damage to timely replacement and Wheel Loader, so as to avoid the life of roller adversely affected. Pay special attention to the use of the roller bearing grease, but also on the roller greasing. I have encountered in their daily work of roller corruption problems are mostly the absence of timely greasing cause bearing damage caused. Also note that the locking nut is loose, tighten any loose should be timely, otherwise it will damage the roller bearings, resulting in unnecessary losses.

concrete mixer truck to note

To make the hydraulic system efficient and trouble-free operation, it is necessary to strengthen the maintenance of everyday use, and in strict accordance with the instructions of concrete batching plant to operate, as required in a timely manner the hydraulic oil and assistive devices (mainly filter) concrete block making machine. In the oil change process should pay attention to the following points.
1) performance parameters meet the requirements of hydraulic oil, must not be used or have been used with filtered and precipitated hydraulic oil.
2) refueling best to use filtering accuracy of 10 oil filter.
3) the main system pump, before the start of the motor housing to be filled with hydraulic oil.
4) the user first use and after every 2000h 500 and the hydraulic oil and filter should be replaced, you must use manual recommended hydraulic oil and filter.

Concrete mixer truck safe speed

Steering when driving truck rollover phenomenon is more prone to problems. This problem only with the truck when traveling agitation mixing drum rotates, driven cylinder concrete, making the vehicle centroid shift towards a situation to determine the direction, but also with Concrete mixing plant state (turning radius, speed, vehicle centroid total offset, etc.) factors. This mainly refers to the safe speed to ensure that vehicles in turn with rollover phenomenon does not occur when speed. When driving straight side slope safety and slope angle on the side, not specifically discussed here.
National truck driving the direction of rotation of the mixing tube is usually their eyes on a side road vehicles driving regulations to determine. According to China's traveling road vehicles driving on the right provisions, most domestic truck driving jobs in agitation, mixing tube rotation direction is clockwise (facing the rear look ahead, clockwise rotation), corresponding to the mixing tube spiral blade rotation is L. This arrangement is adapted to the right lane highway right low left high section of the actual situation. Mixing tube dextral designed truck in the vehicle's center of gravity conditions agitation mixing tube axis vertical plane, right off the vehicle centerline 50 ~ 100mm, makes the truck a few slightly better lateral stability. Due to historical reasons, China stir some truck driving job, the direction of rotation of steel cement silo is left (facing the rear look ahead, counterclockwise rotation), corresponding to the mixing tube spiral blade rotation is right-handed. This arrangement makes the mixing tube sinistral truck agitation conditions in the vehicle's center of gravity leftward, not suited to driving on the right road when the right low left high section of the actual situation, with increasing lateral inertial force generated by the roll negative torque, resulting in relatively poor lateral stability of the vehicle. However, the design of the mixing tube alone does not eliminate bias truck rollover.

2013年7月26日星期五

concrete mixer driver configuration

Semi-floating cab suspension, damping seats, fluorescent lighting, air conditioning and other configurations convenient and Concrete mixing plant, reflecting the humane care.
Two stepping up and down armrest, door opening angle of 90 degrees, up and down easily occupants
Front cover before turning cab, the cab before the turn angle of 55 degrees to facilitate routine maintenance chassis inspection. Concrete mixers and other local road access to the site of the more complex, such as by the impact of Cement silo, roads generally narrow road environment is not good. General cycling Fortunately, semitrailer driving more difficult, the turning radius is greater, access to the site is not suitable. Particular site, if you encounter rain, muddy road, trailer skid more easily trapped car.

concrete mixer use should pay attention

1 end of the day, the driver should be responsible for the mixing tube into the water at high speed (14-18 rev / min) rotation for 5-10 minutes, then drain the water in order to ensure the barrel clean. With high-pressure water cleaning various parts of the concrete mixing machine, you should pay attention to avoid instrumentation and joystick and other parts. Paint pressure water spray nozzle and the body the distance between the surface not less than 40 centimeters.
2 Clear the mixing tube and external contamination and residual slag concrete blocks, as well as in machine repair and maintenance personnel to enter the cylinder for welding operations, you must first turn off your vehicle engine, the mixing tube is Wheel Loader. In machine repair personnel to enter the cylinder during the work, you must ensure mixing tube ventilation, fresh air, no natural gas and hazardous dust, adequate supply of oxygen (Do not use oxygen). Operating the power tool in the barrel, the operator must have good insulation.
3 Work shall not reach into the rotating mixing tube, put his hand entered the prohibited discharge chute and extended discharge chute joints, to avoid accidents.
4 mixing blades should be checked regularly for wear and timely repair and renewal.
5. Implement all relevant safety practices. Concrete mixer truck drivers must undergo professional training, no certificate shall not induction operation.

concrete mixer Precautions

1, the hydraulic system pressure should be consistent with the operating instructions shall not be adjusted. Hydraulic oil and fuel oil shall comply with the original requirements.
2, concrete mixer loading, concrete batching plant tube drained residual water and debris. During transport to keep the rotation, to prevent segregation of concrete. Concrete Mixing Truck access to the site and unloading should be preceded by the mixing drum at full speed to 14-18 rev / min rotation for 1-2 minutes, then invert discharge. Reversal, you should not turn the mixing tube parked.
3, the ambient temperature is above +25 degrees Celsius, from the loading, transport, unloading duration to not more than 60 minutes, the ambient temperature is lower than +25 degrees Celsius, the time must not exceed 90 minutes.
4, winter construction, you should make sure: check before starting the icing; work when mixed carefully excluded from the barrel and residual water within the water supply system, turn off the pump switch, the control handle to the "stop" position.
5, after unloading at the construction site, immediately rinse with a hose that comes mixer into the hopper, the hopper, discharge chute, etc., adhere to the clear and concrete sludge throughout the body. In return mixing station on the way, mixing tube should inject 150 --- 200L water to clean the cylinder wall and the blade bonded concrete residue.

concrete mixer System Description

Mixing drum: The models used in the mixing tube is a more general form of the structure, the mixing tube using pear structure, and its clean water and replenish as needed during transport added Screw Conveyor, by the head into the mixing tube the feed opening into the cylinder.
Transmission: The mixing tube driven approach to engine as power source, by the engine rear PTO power take off, passing through the shaft to the variable plunger pump, plunger through quantitative motor oil, then stir through the reducer drive drum rotation.
And out of the mixing tube feeding system (loading and unloading mechanism): It is an important work of the auxiliary mixing tube devices.
Control system: is the mixer control part, on the control panel to open the "-shaped" groove, a lever space; groove and the rear half of the limited open position holes for fixing the position of the joystick. The operating system through the rear of the car around two joysticks to control the Concrete mixer, reverse and speed, so to complete access to materials and mixing action.
Water System: concrete mixer water supply system is mainly used to clean the mixing device. The models of the water supply system consists of two types, one is the centrifugal pump water supply system; One is the pressure tank water supply system for the user option.

concrete mixer drive unit

The role is to drive drive rotation concrete tank, which consists of power take off, cardan shafts, hydraulic pumps, hydraulic motors, control valves, hydraulic tank and the cooling device component. If this part of the work is stopped due to a fault, concrete tank will not rotate, which causes the car scrap concrete, serious and even make the whole tank of concrete batching plant in the tank, causing the concrete mixer truck scrapped. Therefore, whether the drive is in use must be highly reliable and important issue. In order to ensure sound and reliable drive, you should do the following maintenance work:
a. Universal rotation part is failure-prone area, should when greasing and regular checks of wear, and timely repair replacement. Team should spare cardan shaft assembly, in order to ensure the event of failure can resume work in a few minutes.
b. Ensure the hydraulic oil clean. Concrete Mixing Truck working environment, we must prevent sewage sediment entering the hydraulic system. Hydraulic oil according to the user manual require periodic replacement. Once the inspection found that the hydraulic oil mixed with water or sand, we should immediately stop cleaning hydraulic systems, replacement of hydraulic oil.
c. Ensure the hydraulic oil cooling effect. To regularly clean hydraulic oil cooler, to avoid clogging the radiator is cement Check the radiator electric fan is functioning properly, prevent hydraulic oil temperature exceeded. Just be sure the hydraulic oil hydraulic parts cleaning, general fault much; But different manufacturers, the service life is not the same.

Concrete mixer truck sales maintenance

A: reasonable assurance protection period. Vehicle protection cycle is protected from automobile mileage or effort. Owners in the practical application process, should refer to the automobile factory referrals protection period, contact the car itself, and utilizing the skills prerequisite for the protection period for appropriate adjustments. Generally speaking, the new car at the premise of superior road use, without too frequently protected to steel cement silo protection rules as the upper limit cycle can; while poorer automotive skills, or use bad premise, it should be appropriate to shorten the protection period.
Two: full use of free testing.Cement silo manufacturer launched free testing exercise on the length often beneficial owners, owners can apply these to detect motion like cars for specific medical examination for real-time detect and eliminate some of the potential problems, and then eliminating the future be able to render high maintenance protection costs.
Three: try to crash less maintenance assembly. Many concrete mixer Lord have this feeling, like a car crash repairs after assembly rampant tidy, premature entry into the vehicle maintenance period. The primary reason for showing this scene touched the assembly of repair work skills and other aspects of quality accessories. Thus, it is best to prevent the collapse of maintenance assembly, applying the skills of advanced protective equipment and tricks to avoid demolition of the car for protection against the car assembly and parts do not want to damage the formation and progress to protect the quality and reduce maintenance total cost.

concrete mixer cleaning

Since concrete solidified into lumps in a short time, and the steel and paint has some corrosion, so the concrete tank after each use, wash and adhere to the concrete block making machine on the material inlet and outlet of the concrete is a daily maintenance must work seriously. Including:
a. Rinse with water before each filling inlet, so that when the inlet kept moist during charging;
b. At the same time charging comes to vehicle wash water tank filled with water;
c. After loading washing Inlet, near the mouth of the feed residue washed concrete;
d. To the site after unloading, rinse out the chute, and then added to the concrete tank cleaning water within 30-40 L; return the vehicle to keep the concrete tank forward slow rotation;
e. Remember to let go before the next charging within the concrete tank sewage;
f. Each day when the Concrete mixer and thoroughly clean out material around the mouth, to ensure non-stick cake with cement and concrete.
These work for as long as one is not careful, it will give the future work of great trouble.

2013年7月25日星期四

The relative height of the conveyor

In the design process should be possible to increase the relative height of two conveyors. Space restrictions in the upper and Concrete Mixing Truck, guide trough and other pieces of form and size should be seriously considered. General guidance for the width of the trough should be about three-fifths of the width of the belt is more appropriate. In order to reduce or avoid the belt deviation increase blocking plate blocking materials, changing direction and position of the whereabouts of the material.
steel cement silo, carrying idlers conveyor installation location and the vertical centerline error is large, resulting in a carrying conveyor segment to a deviation. Conveyor roller when run forward a forward traction Fq, the decomposition of the traction roller rotating component Fz and a horizontal force component Fc, the horizontal force component that axial movement of the roller, the roller the fixing roller bracket is not axial movement, it must generate a reaction force will be on belt Fy, which moves the conveyor belt to the other side, resulting in a deviation.

Commissioning the causes

the outer surface of the drum processing errors, sticky material or wear caused by uneven diameter sizes, the conveyor belt to the larger diameter side of the deviation. So-called "big run do not run small." Its force in Figure 4 shows: Fq traction belt to produce a large-diameter side of the moving component Fy, under the action of the force component Fy,Concrete mixing plant. In this case, the solution is to clean the surface of the roller sticky materials, processing errors and uneven wear to be replaced down reprocessed plastic bag handling. Asphalt Mixing Plant,reprinted point blanking caused by malposition as five pairs of belt deviation, reprinted material blanking at the point position on the conveyor deviation has a very big impact, especially in the upper section of the conveyor and the conveyor in perpendicular to the horizontal projection greater impact. Usually reproduced points should be considered down two belt conveyor relative height. The relative height of the lower horizontal velocity component of the material the greater the impact on the lower side of the belt force Fc is greater, while the material is difficult to center. So that the material on the belt cross section deflection, impact force Fc horizontal component Fy eventually lead to belt deviation. If the material is biased to the right, then the belt deviation to the left, and vice versa.

Commissioning the causes of conveyor

Belt conveyor system is the key equipment, safe and stable operation of its direct impact on production operations. Belt conveyor belt deviation is the most common faults, its timely and accurate processing of Concrete block machine and stable operation of protection. Deviation of the phenomenon and for many reasons, according to the different causes deviation phenomenon and take a different adjustment methods in order to effectively solve the problem.
A head or tail bend pulley drive roller axis is not perpendicular to the center line of the conveyor, causing the head drum or tail conveyor idler pulley at the deviation. Deflection rollers, the conveyor belt on both sides of the tightness of the drum inconsistency in the width direction of the traction force Fq also suffered inconsistent, as increasing or decreasing trend, so that the conveyor will add to the descending direction of movement of a force Fy , leading to the loose side of the belt deviation, the so-called "run do not run loose tight." The adjustment method is: the head drum as the drum belt deviation to the right, the right of the bearing should be Concrete mixer, the left side of the drum conveyor deviation, the left bearing seat should move moves, the corresponding can also be shifted left or right rear bearing housings after the shift. Rear roller adjustment method and the head drum opposite. After repeated adjusted until the conveyer transferred to an ideal location. Adjust the drive or bend pulley in the best pre-install its exact location.

conveyor processing method

(1) Check the lateral centerline of the conveyor roller longitudinal centerline misalignment. If the misalignment exceeds 3mm, you should use idlers elongated mounting holes on both sides to be adjusted. The specific method is biased which side of the conveyor, concrete batching plant advancing group which lateral direction forward, backward, or the other side.
(2) Check the head, tail rack bearing two plane deviation. If the deviation is greater than two planes 1mm, the response to adjustment of the two planes in the same plane. Head drum adjustment method: When the right side of the drum belt deviation, the roller bearing right or left should move forward bearing backward; if the conveyor belt deviation to the left of the drum, then roller bearing should be left or right to move forward bearing after the shift. concrete block machine adjustment method and the head drum opposite.
(3) Check the position of the material on the conveyor. Material in the conveyor belt is not centered on the cross-section will cause belt deviation.
If the material is biased to the right, then the belt deviation to the left, and vice versa. Should be used as much as possible so that the material centered. To reduce or prevent such deviation increases the blocking plate conveyor, to change the orientation and position of the material.

conveyor inclined wall

Corrugated wall with a large angle by the baseband, Concrete Mixing Truck, diaphragm 3 parts. Measure to prevent the material from sliding wall scattered role. To facilitate bypassing drum, corrugated edge design file; diaphragm is the role of carrier material, in order to achieve a large transmission angle, using T-TC type. File edges and transverse bulkhead is secondary vulcanization methods and baseband steel cement silo with high connection strength. Product Features (ordinary type inclined corrugated sidewall conveyor belt): 1, increases the transmission angle (30 to 90 degrees); 2, small footprint, low investment; 3, transmission capacity, lifting height higher; 4 , from horizontal to inclined (or vertical) can be a smooth transition;
5, suitable for conveying easily scattered the powder, granular, small block, paste and liquid-like material; 6, low energy consumption, simple structure, tape, high strength, long service life.

modules belt

Modular conveyor belt extending over the entire width with the plastic hinge pin, the injection molding assembly into the interlock unit belt. This method increases the strength of the belt and can be connected to any desired set width and length. Bezel and side panels can also concrete batching plant with the hinge pin has become integral parts of one of the conveyor belt.
Conveyor belt known as conveyor belts, belt conveyor for carrying and transportation of materials plays the role of rubber and fiber, metal composite products, or a composite of plastic and fabric products. Belt conveyor in agriculture, industrial and mining enterprises and transportation are widely used to transport a variety of solid lumps and powder-like materials or items can be continuous, high efficiency, large angle transport, safe operation, easy to use, maintenance easy, cheap freight, and can shorten the transport distance, reduce construction costs, Concrete mixing plant and resources
Many different types of conveyor belts, according to use classification are: general purpose conveyor belts, flame retardant anti-static conveyor belt, general flame retardant conveyor belt, heat resistant conveyor belt, heat resistant conveyor belt, acid and alkali resistant conveyor belt, oil resistant conveyor belt, cold conveyor belt.
Classification according to structural materials: ordinary cotton canvas conveyor belt, nylon conveyor belt, polyester conveyor belt, steel cord conveyor belt, PVC conveyor belt, PVG conveyor belt, rope belt and so on.

Classification according to the product structure

Classification according to the product structure: Layered conveyor belt, cement mixing machine, steel cord conveyor belt, steel cable conveyor belt, pipe conveyor belt, pattern conveyor belt, sidewall conveyor belt, conveyor belt layer reduction.
For convenience, we usually adopt a unified representation for various conveyor belt various categories of representation
1, layered conveyor common representation (standard notation Unlike this, please refer to the specific provisions of the standard GB7984):
In NN200 1000 × 6 (6 +3) as an example, NN200 represents the nylon 200, 1000 - indicates the width of the tape 6 - indicates nylon layers, (6 +3) - indicates the upper and Cement silo rubber conveyor belt were 6 mm and 3 mm thick.
2, steel cord conveyor belt commonly used representation:
In ST1000 H 1000? 4.0-6.0-6.0 as an example:
ST1000-represents the strength specifications for 1000N/mm
H-indicates the level of performance plastic cover
1000 - represents the width of the product, in mm
? 4.0-represents the rope diameter in mm
6.0-6.0-represents the upper and lower plastic cover thickness in mm
3, the representation of the entire conveyor belt
General mine with PVC and PVG whole core fire-retardant conveyor belt with intensity levels and tape width to represent. Intensity level is generally divided into: 4, 5, 6, 7, 8, 9, 10, 11, and up to 16 bands. Conveyor belt width is generally: 500mm, 650mm, 800mm, 1000mm, 1200mm, 1400mm, 1600mm, 1800mm and so on.
China provides that all coal mine conveyor belt products used must comply with the relevant standards of the flame-retardant anti-static conveyor belt. Commonly used conveyor coal mining enterprises are: PVC whole flame retardant antistatic conveyor belt, PVG whole core fire-retardant anti-static conveyor belt, steel cord conveyor belt fire-retardant antistatic.
Retardant antistatic conveyor main provisions of the product's safety performance: an alcohol burner combustion; 2, the surface resistance; 3, roller friction; 4, simulated roadway propane burner. These test items characterize the product's safety performance.

Conveyor Considerations

As the conveyor belt in the industrial production of universal, multi-species, high-performance, steel cement silo, versatile, long life is concerned about several aspects of the manufacturer. In industrial production, the correct use of conveyor belt is particularly important, the conveyor belt in use should note the following:
1 to avoid roller covered by material, causing rotation ineffective to prevent leakage of material between the card in the drum and the tape, note the lubrication of Concrete mixer moving parts, but not oil belt;
(2) prevent the belt load start;
3 conveyor deviation occurs, should take timely measures to correct;
4 found conveyor local damage, the application of rayon timely repair to avoid expanding;
5 to avoid being conveyor rack, pillars or massive block of material, to prevent misfortune to scratch the rip.

belt adjustment method

Conveyor machine at boot time, the motor current is 5-6 times higher than the rated, not only will affect the life of steel cement silo and consume more power. Department
Conveyor speed adjustment
Systems in motor selection in the design would have a certain margin on, the motor speed is fixed, but in actual use, sometimes at a lower or higher speeds, so frequency transformation is very necessary. SAJ is an inverter motor soft start can be achieved by changing the operating frequency to achieve energy saving conveyor machine speed Concrete block machine, and give the equipment to provide overcurrent, overvoltage, overload protection function.

by the use of conveyor belt industry

Automotive industry-specific conveyor belt, battery dedicated conveyor belt dedicated frozen food, snack food special conveyor belts, Wheel Loader aquaculture industry, the tire industry-specific conveyor belts, special belts logistics industry, the chemical industry special conveyor belt, frozen food special conveyor belt, food conveyor belt, microwave conveyor, Asphalt Mixing Plant, marble belt, corrugated conveyor belt industry-specific packaging, entertainment facilities, special conveyor belt, hydraulic
Body food special conveyor belt specific fruits and vegetables, vegetable special conveyor belts, meat special conveyor belt, mine special conveyor, cement special conveyor belt, garment factories dedicated conveyor, glass special conveyor belt molding industry-specific and other automated production lines.

Conveyor

Belt is the most important modern bulk material handling equipment, which widely used electricity, food, metallurgy,Bolted Type Cement Silo, coal, mining, ports, building materials and other fields. Because it has a conveying belt material class Wide, wide range of transmission capacity, transmission line adaptable and flexible loading and unloading costs and reliability And concrete batching plant, in some areas has gradually begun to replace the automobile, motorcycle transport. Become the main bulk materials transport Equipment, in the socio-economic structure play an increasingly important role. Especially electric drum drive belt transmission Sending machine in grain bulk material handling process more has unparalleled advantages and development potential to open up so we think Dimension to innovation combined with their prior knowledge and existing data improved its innovation. In this process,Test their ability to innovate in making a broader range of applications in the fields of national economy play a more Plus an important role.

scraper conveyor classification

A conveyor having a traction member generally include traction, bearing components, drive means, tensioning means, offered loading Position and supporting parts. Tractor parts used to pass traction, can be used conveyor, drag chain or rope; bearer Order to put the material component, there are hoppers, bracket, or spreader, etc.; Wheel Loader the conveyor to power, usually by Motor, reducer and brake (stopper) and other components; tensioning devices generally have two kinds of screw and hammer, Can maintain a certain tension of the traction member and dips in order to ensure the normal operation of the conveyor; supporting member for supporting the Tractor parts or carrying member, can be idlers, rollers, etc.
A conveyor having a traction member structure is characterized by: the material to be transported to the traction member mounted in the bearing linked together The inner member, or directly mounted on the pulling  element (such as belt), the pulling element of the roller or chain around the end to end,Including the transportation of materials to form branches and steel cement silo transportation of materials unloaded branch closed loop, using the traction member Continuous motion conveyor materials.
Such a wide range of conveyors, the main belt conveyors, slat conveyors, trolley conveyors, automatic Escalators, moving walkways, scraper conveyor, buried scraper conveyor [1], bucket conveyor, bucket elevator, overhead conveyors and overhead lifts and so on.

scraper conveyor Practice

1, attire, valid ID posts.
2, earnestly implement the Concrete block machine, known as the post number and on the number of laid-off process and device startup,Stop the sequence, a clear set of control signals.
3, must be carefully checked before driving machinery and ministries screws properly.
4, the inspection process, personnel should stand in a safe position to prohibit the probe into the blade body parts and cabinets.
5, the operation to carefully check the operation of the chain plate, chain tension, chain wheel engages with the head is normal.
6, clean up debris in the first round or cabinets product goods must blackouts.
7, if found out chain or goods and concrete block making machine, should be immediately stopped, handling personnel standing on both sides of the body, non-op Line treatment failure.

use and maintenance scraper conveyor

(1) people start to vote scraper conveyor during operation should be careful to check the tightness of the scraper chain, because the chute between Connection due to operation and reduced spacing. The chain is too loose will appear card chain, Concrete Mixing Truck and chain off road things Therefore. Examination method is inverted conveyors, count the number of slack chain link, if two or more completely slack chain link When you need to re-tension chain.
(2) to maintain a straight face. If the face is concrete block machine, the tension of two chains will vary, will cause wear of the chain Uneven or the bottom chain off road, stuck or broken links.
(3) conveyor bend to fit, not a "chicane", should be made not less than eight curved portion chute, push Move around to the attention of hydraulic jacks complement each other and avoid sharp bends. Otherwise it will cause the wrong chute mouth, causing Chain scission off into an accident, paying particular attention to stopping the conveyor can not be over.
(4)Asphalt Mixing Plant was to be flat. The chute of the restriction, it is only in the vertical direction to adapt to the 3'-5 'changes Therefore, if any local bump should face floor flat. Laying flat and conveyor scraper chain in favor of transport Turn, can reduce the wear of the chute and the power consumption is reduced.
(5) When blasting is in progress, must be part of the conveyor and pipeline transmission, the unit cables, switches and other good protection. When the conveyor transporting iron materials, long material, security measures should be developed to avoid personal injury.
(6) End and intermediate transition slot machines slot lap joints are not allowed to have too much bending, bending is applied when there is wood pad.
(7) Special attention vibration coupling in the conveyor starts to check fluid coupling vibration, in order to retain Retaining good thermal conditions should always clean the protective cover and the liquid

new scraper conveyor

Scraper conveyor for coal mining, chemical mines, metal mines and power plants and other major means of transport used to transport materials. It is composed of central trough, Concrete mixing plant, scraper and traction system. Among them, the middle slot is the primary scraper conveyor To some, the steel central trough nearly a hundred years of history, in the long course of the following disadvantages:
① weight, installation and removal time consuming; ② central trough is generally made 6 ~ 15mm of steel plate, subjected to Larger impact deformation, repair more difficult; ③ poor corrosion resistance; ④ poor wear resistance; ⑤ materials and in Ministry groove friction coefficient, power scraper conveyor most consumed in the friction material and the central groove on Resulting in excessive energy consumption, increased investment.
Ultra-high molecular weight polyethylene is manufactured using scraper conveyor plate, steel plate to resolve the problems,Get plastic scraper conveyor. For small scraper conveyor can be modified to manufacture ultra high molecular weight polyethylene Made scraper conveyor. For the above walking Shearer large scraper conveyors, plastic composite method to be used  With ultra-high molecular weight polyethylene lined with large scraper conveyor to improve wear resistance,
Asphalt Mixing Plant, Reduce the friction coefficient, thereby reducing power consumption and reduce the traction drive system requirements, which for large Scraper conveyor has a huge significance. This product is developed by the Shandong University of Technology, can be used in coal mines, chemical mines,Metal mines and power plants and other materials transportation.

key trends scraper conveyor

1 large traffic. Advanced mining countries have evolved to hour transport capacity up to 1500t (80 years)3500t (90 years) of the concrete batching plant.
2, long transport distances. To reduce the phase pillar mining area loss, increase the length of the face, scraper conveyor The length of the machine has reached more than 335 m.
3, high-power motors. Motor power has grown to single-speed motors up to 525kW, two-speed motor 500/250kW.
4, long life. The use of large diameter ring chain, increasing the intensity of scraper chain, extending the concrete block making machine Life, the whole amount of coal had up to 600 tons.

scraper conveyor stages of development

Scraper conveyor in coal production and the construction Concrete Mixing Truck has gone through three stages. The first stage 30-40 Years, is detachable scraper conveyor, it can only be a straight line in the laying face, with the face of the advancing, The need to manually disassemble, move, assemble. Scraper chain plate, mostly single-chain, such as V-type, SGD-11 type,SGD-20 type and other low-power light-duty scraper conveyors. The second stage is the early 1940s by the German manufactured flexible Scraper conveyor, Concrete block machine, metal bracket with the realization of the mechanized mining. The scraper conveyor cough Adapt to uneven floor and level uneven convex bending and other conditions, transference without disassembly, and also the amount of coal The increases, such as the prevailing model SGW-44 type scraper conveyor is this phase of the representative products. Enter 60 years Since the emergence of hydraulic support on behalf of, in order to meet the needs of mechanized mining, scraper conveyor developed to the third stage,Developed a high-power heavy armored cough curved scraper conveyor, such as SGD-630/75 type, SGD-630/180 type and so on Belong to this stage of the product.

scraper conveyor advantages and disadvantages

Benefits:
A solid structure. Able to withstand the coal, waste rock or other materials punch, hit, hit, pressure and other external forces.
2, able to adapt to the coal face uneven floor, bending over the needs and can withstand steel cement silol or horizontal direction Bent.
3, the body short, easy to install.
4, the orbit can double shearer.
5, can reverse run, easy to deal with the bottom chain accidents.
6, can be hydraulically front pivot bracket.
7, the structure is simple, the length of the conveyor can be any point on the feed or discharge.
8, concrete block machine, you can prevent the transportation of materials, dust emissions and pollution of the environment.
9, when the tail is not set casing and insert windrow scraper, can choose their own conveyor.
Disadvantages:
1, no-load power consumption is higher, at about 30% of the total power.
2, not long-distance transmission.
3, prone to swap chain, jump chain accidents.
4, the consumption of steel and more. Cost big.

scraper conveyor practical application and working principle

Practical application: scraper conveyor can be used for horizontal transport, can be used for inclined transport.
Transported along Concrete mixer,Seam inclination must not exceed 25 °, downward transport, inclination must not exceed 20 °, when the seam inclination is large,Slip device should be installed. Flexible scraper conveyor allows the horizontal and vertical directions for 2 ° ~ 4 ° bends.
How it works: scraper conveyor works will open chute,concrete mixing machine, gangue or materials, etc.Bearing member, fixed to the chain on the blade(composition scraper chain), a traction member. When the nose gear unit Kai After the move, driving the nose sprocket shaft rotates, driven by the scraper chain loop runs along the chute material move straight To the machine head unloaded. Scraper chain sprocket for  stepless bypass the closed-loop operation, the completion of the delivery of materials.

scraper conveyor components

Types of concrete block machine and composition of the main components of the basic is the same, which consists of the nose, in the middle Tail portion and machines such as three parts.
In addition, for the passage of the conveyor device and the use of hydraulic jacks used when tight chain chain tensioner and other ancillary components.Machine head by the head frame, concrete mixing machine, fluid coupling, reducer and sprockets and other pieces of composition.
Central groove by the transitional, Central trough, chain and scraper and other pieces composed. Machine for scraper chain tail is returned devices. Heavy-duty scraper conveyor  Machine as the tail and the head, is also a power transmission apparatus, to distinguish from the install location of the upper core and lower called  Handpiece.
Scraper conveyor consists of: by scraper conveyor chute arrangement and structure can be divided into two parallel and overlapping Species, according to the number and arrangement of the chain can be divided into single-stranded, bilateral chains, two-center chains and three chains four kinds.

2013年7月24日星期三

Concrete batching machine belt batching formula

Concrete batching machine belt batching formula:
Its structure is mostly upper material storage hopper, the lower part weighing hopper, bottom discharge conveyor belt, hopper with raw materials to be used for storage, storage hopper bottom port conveyor belt under the Founder right ingredients. The principle: concrete block machine, start with a belt conveyor hopper to the set value in raw material belt is stopped, and then under the control of the control instruments, followed by configuration of several materials to all materials configured, instrumentation control will start unloading belt material into the next part (such as blenders enhance bucket or belt conveyor, etc.)
Multi-belt ingredient for small and medium sized construction site, because of its smaller base materials such as sand PL800 with 500Kg, press ≤ ± 2% error count, absolute error within the 0 ~ 20Kg, so as to further improve the batching accuracy, reduce errors value without compromising the efficiency of delivery, the ingredients can be slow, fast discharge mode. Error can be controlled within the 0 ~ 5Kg.
Users use such concrete mixing machine in order to reduce procurement costs, and more hope to borrow metering hopper batching machine to simultaneously measure bulk cement, cement screw conveyor through the cement into the cement silo batching machine weighing hopper, generally do not advocate this usage, Because cement fluidity, will cause the conveyor belt weighing hopper mouth with a small amount of cement gap overflow, causing loss of live or cement dust pollution, such as have to use this method you must use Groove belt roller and bucket lip additional soft thin wall in order to control the cement spill.

Concrete batching machine cumulative measurement

Refers to a variety of materials were in the same weighing bucket were successively measured by the concrete block making machine to set each type of material value of the order with meter, similar to the same scales, said first pound of beans in the said half a catty of rice the same.
Divide
Dosing time, the electrical control signal is issued to stop dosing instructions to the materials actually fall weighing hopper during the set value (amount in advance) and the actual value of the concrete batching plant, so batching machine at work by a control instrument in the material reaches the actual value of the advance a stop signal, the signal after the fall of this part of the material called gap.
Namely: the actual number - set number = gap (this gap batching machine instrument can automatically correct)
Tare (zero)
Any measuring instruments are based on a measurement of the initial reference point measurement, the reference point can be temporal scales when the zero-value point, it can be empty scale time zero data points (such as the hopper a residual material or accumulated measured the former type of material the actual value), this non-zero data points can be controlled via the instrument manually or automatically considered next measured zero (initial reference point)

Concrete batching machine Introduction

Also known as: concrete batching machine,concrete batching plant, automatic batching machine gravel
Batching machine is a kind used for a variety of materials such as: Sand quantitative distribution automation equipment, mainly used in concrete construction industry as an alternative to artificial scales or volume measurement, etc., with high accuracy, and distribution efficiency, high degree of automation characteristics, is fully automatic concrete mixing station equipment is one of the main parts. Concrete block machine is entirely based on market demand from the domestic manufacturers create their own independent product variety, with continuous improvement has formed multi-family, multi-species, multi-purpose stand-alone product system, main categories:
1 divided by the number of graded material: two bucket, three bucket, four bucket
2 Press the matching mixer model is divided into: PL (D) 800,1200,1600,2400,3200
3 Press dosing divided into: the accumulation of materials are measured separately measure each material
4 Press batching control methods are divided into: a belt, cylinder

JZ type concrete mixer mixing power calculation

JZ type bipyramid reversal discharging concrete mixer with vintage drum drum mixer phase Ratio, due to its Asphalt Mixing Plant, the structure, layout and mixer blades are reasonable Had changed dramatically, so the stirring power calculation can not continue to follow the drum cartridge Calculation of the mixer. This paper from the characteristics of JZ type mixer, From motion analysis and stress analysis to proceed, according to the concrete rheological equation, This type mixer mixing power calculation model, and verified by an example. 1 Mixing process in motion analysis of concrete cone near the end of the feed tube Inner wall of the symmetrical arrangement of a pair of lower blades and a pair of high blades. These two sets of Screw Conveyor and cylinder axis points
Do not become Α,-Α angle welded to the cylinder on. While stirring them with a cylinder Starting rotation. In the mixing of concrete, the low part of the blade of the concrete mix A higher position to the cylinder material. Then under its own weight, this part of the mixed Aggregate material falling down, some of which fell in the lower position is high Blade. Some of these mixing compound in the cylinder body splash, while others follow High blade axis direction toward the cylinder near the end of the discharge cone movement.

JZ type concrete mixers and the transmission part of the design overall summary

In order to adapt to different mixing requirements, mixer developed many models, the First, the design of Concrete mixing plant for selection, by comparing the final confirmation Be selected from the drop-cone reversal discharging mixer. After selection of the mixer The transmission part of the design calculations, first through the design of the mixing tube meter Operators identified stirring power, select the motor, reducer after design, which is This design is an important part in the design of the gear unit, reference materials, According to the design of the mixer step of calculating each of the components designed reducer, After the completion of the design of reducer, right outside of the mixing tube large open gears Design calculations, it is the difficulty of this design, because the gear ratio Large, need a steel cement silo to this problem in order to finalize the mixer Transmission part of the design, and then choose the appropriate section of the drive shaft coupling Connect various devices to complete the transmission part of the design, the material on the upper portion Of a simple design, the final synthesis of the overall unit concrete mixer Points.

js series concrete mixer Profile

js series concrete mixer series twin-shaft compulsory mixer, the machine has
A standalone operation and concrete mixing machine with PLD series batching machine simple concrete The dual advantages of mixing station, mixing station can also provide support for the host, fitness For all kinds of large, medium and small precast plant andconcrete block making machine, bridges, water, Terminals and other industrial and civil engineering, can mix dry hard concrete, plastic Of concrete, fluidity concrete, lightweight aggregate concrete and various mortar, Type a high efficiency model, is widely used.

cement mixer operating instructions

1, in the steel cement silo truck must be checked before the job, make sure steering,Brakes, lights, sensitive and effective signaling system, mixer truck rollers and slip No crack and severe damage grooves, the stirring blades wear in the normal range, the bottom Between the disk and the sub-frame U-bolt connection is good.
2, to understand the construction requirements and cement mixing machine. Choose Driving Directions and parking places Point.
3, on the roads in the community must abide by traffic rules. Turning radius should Meet the specification requirements, speed of not more than 15km. Stop speed of not Greater than 5km.
4, operation, non-touch rotating rollers and tires.
5, in the concrete mixer reversing discharging, must obey the command, note Personnel around, abnormal immediately stop.
6, is prohibited in the high-voltage lines under concrete mixer cleaning operations.

cement mixer Special Performance

1, produced by Concrete Mixing Truck and manufacture special wear-resistant steel mixing tube and leaves.
2, the mixing tube leaves the production process using a dedicated mold stamping.
3, the tank and the blade butt welding using large rotary tooling, high precision.
4, the hydraulic system adopt imported components, Concrete block machine, high performance.
5, vehicle modeling chic, beautiful, compact and reasonable.
6, the operating system is flexible and convenient, and around the inlet to achieve operating three As a whole.
7, after welding tank pretreatment process using shot peening to achieve rust, rust.

concrete mixing machine

Chinese name: English name concrete mixing
machine: concrete mixer
set Meaning: the use of rotating mixing drum and leaves a certain proportion of cement, concrete block making machine and gravel Aggregate, concrete block machine, admixtures and admixtures mixed into concrete mixture machine Firearms.
Applied science: Water Science & Technology (a subject); water conservancy facilities Workers (two subjects); Construction Machinery (Water) (two subjects)

concrete mixer choice

Concrete Mixing Truck are mainly three kinds of choices that the amount and duration according to project requirements Selection, according to the design of the concrete type selection, the composition according to the concrete characteristics And consistency aspects of choice.
1, according to the amount and duration of construction required to select concrete projects large and long duration When should use medium or large stationary concrete mixer or mixing station. If a small amount of concrete and short duration, should use small mobile stir Mixing machine.
2, according to the design of the concrete mix concrete for the selected type of plastic or semi-plastic Type, should use self-loading mixer. Asphalt Mixing Plant , high strength,Dry hard or lightweight concrete, should use compulsory mixer.
3, according to the composition characteristics and consistency of concrete options such as mixing concrete terms Consistency small and aggregate size is large, larger capacity should be selected from the fall mixing Machine. Such as mixing consistency large and large concrete aggregate size, the appropriate selection stir Drum speed faster self-loading mixer. Aggregate size as large and small consistency, Should use compulsory mixer or in small-capacity cone reversal discharging Mixer.

2013年7月21日星期日

YHZS type mobile batching plant

Mobile concrete mixing plant concrete mixing station is material storage of materials,

Weighing, conveying, mixing, discharging and centralized automatic steel cement silo as a whole and

A trailer unit concrete production equipment; stir it with a fixed automatic

Mix all the action process station, operation, maintenance and repair are identical;

Along with mobile and flexible, quick and easy disassembly, storage management simple independence

Some characteristics; is a public railways, bridges, ports, hydropower and other projects moving Shi

Workers of the best GRF models. Mobile Concrete Batching letters

Meaning: YHZS in: Y-Mobile, H-concrete, Z-mixing station, S-mining

With twin-shaft host; therefore whose official name is "mobile Concrete mixing plant. "I. Main features: current mobile concrete mixing

Main station and trailer towed into two kinds, tractor chassis contains a complete

The whole of the front and rear axle; trailer chassis, only the rear axle, placed in front of

Tractor saddle bridge. 1, disassembly fast, easy to move when transitions: In addition to

Screw conveyor, cement silo, the entire front end down to haul mixing station

Move; Others, such as walking platform, raised panels fold down, without removing all control cables

Move. The attachment can be removed with the station away. Xin Jian special mobile mixing station is equipped with

Tires, kingpins, traffic signal devices, brakes, trailer drag

Asphalt Mixing Plant of up to 50 km / hour. Installation: Hard to be flat

Of ground level; removable with a 30 ton crane. Storage: If

Device is temporarily not in use, keeping the transition state transportation transportation, with two

, Other properties and method of operation, principles with a fixed standard mixing station (reference

See HZS type concrete mixing station) 3, mobile batching plant transport all components

Unit dimensions are less than the empty container size requirements, the entire station transportation needs

Three 40-foot containers.

HZS90 concrete mixing station configuration profile

A. Uses and Features Jiangsu Heavy Machinery Co., Ek Chor

Our production of concrete mixing plant is the production of large sets of fresh concrete design

Equipment, can produce products that meet the requirements of national standard plastic, semi-rigid, dry

Hard concrete, widely used in urban Concrete mixing plant concrete, roads, bridges, large

Dams, airports, docks and other medium-sized infrastructure construction site.

The mixing station is mixing station in the absorption of foreign advanced technology and control technology agitation

Technique based on the combination of domestic steel cement silo equipment used in the actual situation

And the development of a high-productivity, high intelligence, high reliability, high

Environmental protection, highly modular features such as mixing equipment. Equipment package from the bone

Silos, aggregate belt conveyor, powder warehouse, screw conveyor, mixer

, Measurement systems, water supply systems, gas systems, control systems, main frame

Frame and other components, are independent modular structure, has the following characteristics: 1,

Stirring excellent mixing console is the industry's first high-Mary mix beads Healthland

Mixing machine, and its decades of experience in developing it has a very high reliability;

High-pressure concrete block making machine to achieve automatic cleaning every dish, double door discharge rapidly,

Smooth, no residual material mixing arm streamline design, small resistance, long life, with

Mixing ability, good mixing quality, high productivity, high reliability

, To meet the national standard plastic, semi-rigid, rigid, and other dry

Concrete can accomplish good stirring.

HZS120 concrete mixing plant performance profile

HZS120 concrete mixing station is operated by the ingredients, mixing, electrical control, etc.

Part automatic Concrete mixing plant equipment. It is suitable for medium-

More than the size of the building site, precast concrete factory and commodity production plant.

Its main features are: the use of modular structure, the whole installation, relocation of ten

Points convenient, low equipment cost. Host using JS2000A type twin-shaft

Forced concrete mixer, mixing good quality and high efficiency. Aggregate

Using batching machine ingredients, measurement accuracy, high production efficiency. Cement,

Water, liquid admixture of the ingredients were measured using electronic scales, batching accuracy

. Water supply system uses siphon pump pressure principle, the water flow rate plus

Fast, spray evenly, the steel cement silo principle has obtained national patent. Aggregate

On the material used conveyor, long life, high efficiency. Electric

Control systems are all using imported components, reliable performance, operation side

Then

concrete mixing plant characteristics

Concrete mixer station is operated by mixing console, material weighing system, material handling

Systems, material storage systems, control systems and other components of the system attached to the five

Is a facility consisting of building materials manufacturing equipment, its working principle is the main

Cement as cementing material, the gravel, lime, coal and other raw materials for blending

Stir together, and finally made into concrete, as steel cement silo put into the building wall materials

Production. Concrete mixing station since been put into use in China's building materials industry

Has played an important role, of course, this is also the concrete mixing station itself

Possess superior characteristics of the decision.
Concrete mixing station consists of sand and gravel feed, powder feed, water and applied

Agent to the material, transport and storage of four parts mixing equipment Tongshen overall

Steel casting, high-quality H-beam is not only beautiful appearance, but also strengthened

Concrete mixing station's concrete batching plant structural strength, equipment, easy to install, can be applied

In a variety of complex terrain structure.
Concrete mixing station with good mixing performance, the device uses double spiral

Horizontal shaft forced mixing console, mixer can be strong not only for dry hard,

Plastic and various proportions of the concrete mix can achieve good results.

Stir and high efficiency.
Concrete mixing station only has excellent mixing console, it also has a variety of fine

Liang accessories, such as screw conveyor, metering sensors, pneumatic components, etc., which

These components ensure the concrete mixing machine standing high reliability during operation

, The precise measurement of skills, and long life. Meanwhile, the concrete

The mixing station maintenance parts are equipped to go Taiwan or seizure ladder, and has sufficient

Maneuvering space, mixing console can be equipped with high-pressure automatic cleaning system, with

Function starvation and over-temperature alarm function, easy maintenance of equipment.
Concrete mixing station has a good environmental performance, the machine during operation

, Powder manipulating the system are carried out in the whole block, pink tank with efficient dust collection

Device / fog blowing methods greatly reduce dust pollution of the environment, while mixed

Concrete mixing station for unloading equipment and pneumatic systems are used exhaust muffler

Effectively reducing the noise pollution.

concrete mixing plant material handling system

Material handling consists of three parts:
Aggregate conveying: mixing station conveyor belt  Concrete block machine with hopper conveyor and two ways

. To enhance the advantages of the hopper small footprint, simple structure. Belt conveyor

The advantage of conveying distance, high efficiency, low failure rate. The main conveyor belt

To apply for a temporary position in the aggregate mixing station, mixing station to improve the hygiene

Yield.
Powder conveying: concrete block making machine powder is mainly cement, fly ash and mineral

Powder. Powder commonly used method of transport is conveying screw conveyor, a large

Mixing with the use of pneumatic conveying and transporting scraper. The advantage of the screw conveyor

Simple structure, low cost and reliable.
Liquid transport mainly refers to water and liquid admixtures, which are respectively output by the pump

Sent.

concrete mixing plant material weighing system

Materials weighing system is affecting the quality of concrete and concrete production costs related Concrete Mixing Truck

Key components, divided into aggregate weighing, powder and liquid weighing weighing three

Points. Under normal circumstances, less than 20 cubic meters per hour, mixing station using stacked

Plus weighing methods, namely aggregates (sand, stone) with a scale, cement and coal

With a gray scale, water and liquid admixtures were weighed, and the liquid outside

Additives put into the bucket of water,steel cement silo said pre-mixed. And 50 cubic meters per hour to

The mixing station, the use of the said material independent way of weighing all

Electronic scales and weighing have adopted computer control. Aggregate weighing accuracy ≤ 2%, water

Mud, powder, water and admixtures are up weighing accuracy ≤ 1%.

concrete mixing plant introduction

Concrete mixing plant is used to centrally mixed concrete joint device, and

Said precast concrete field. Because of its mechanization, high degree of automation,

Therefore, productivity is high, and to ensure the quality of concrete and cement savings

, Commonly used in concrete Concrete block machine volume, long duration, site concentration of large, medium

Type of water, electricity, bridges and other projects. With the development of municipal construction, mining

Stir with a focus on providing commercial concrete mixing station has a great location

, And thus rapid development, and to promote concrete pumping construction, real

Now stirring, transport, pouring mechanical joint operation to create the conditions.
Batching and mixing difference: mixing smaller capacity, structural

Easy installation, can be composed of container transfer sites suitable for construction Wheel Loader

Field; mixing large volume, high productivity, only as a stationary mixing

Devices for large hydraulic works or production of large commercial concrete supply

concrete mixing station

Concrete mixing plant concrete mixing plant mainly by the mixing console, the material called

Volume systems, material handling systems, material storage steel cement silo and control system, etc. 5

Large systems and other ancillary facilities components. Because bone building aggregate measurement and station

Material measure, a decrease of four intermediate links, and is a vertical blanking meter

Volume, saving the measurement time, thus greatly improving the efficiency of production, the same type

Number of cases, the mixing ratio of production efficiency production efficiency three mixing station Wheel Loader

One half. For example: HLS90 floor productivity equivalent HZS120 station

Production efficiency, HLS120 floor production efficiency is equivalent to the production of HZS180 station

Efficiency, HLS180 floor production efficiency production efficiency equivalent HZS240 station

.

Cement and Concrete Technology

Details of the composition of Portland cement clinker, portland cement raw fuel

Materials and ingredients,Wheel Loader production and environmental protection, universal cement, cement characteristics

And special cement, cement hydration and performance of the constituent materials of concrete, mixed

Performance concrete, ordinary concrete mix design and quality control, etc.

. This book is Asphalt Mixing Plant materials science and engineering, inorganic non-metallic materials engineering professionals

Industry in undergraduate teaching, and also for cement, concrete and construction companies

Building engineering and technical personnel training and reference.

cement paste mixer Maintenance

(A) Keep work area should be cleaned thoroughly after each use Concrete mixing plant

Mixed leaves and stir the pot, outside the residual mortar, and sweeping machines scattered and splash

Mortar and dirt on the matter, wipe dry after, put on guard, to prevent dust.
(2) The machine has no external filling hole. Pay worm gear box, gear paid and

Bearings and other moving parts on a quarterly basis plus molybdenum disulfide grease once, when refueling

Open each bearing cap, bearing between the guide rails and columns, lifting bodies

Should always steel cement silo lubrication, maintenance once a year, all the machine cleaning

And add oil and grease.
(3) In case of metal crash the machine running noise, you should first check the mixing

Leaves a gap between the pot and stir correctly.
(4) use of stirring the pot, you should gently, not free collision to

Free deformation caused by stirring the pot.
(5) When replacing a new pot or mixing blades should be adjusted according to the aforementioned method

Whole gap.
(6) should always check the electrical insulation at 20 ℃ ± 5 ℃ Relative Humidity

Degree of 50% to 70% of the cold insulation resistance ≥ 5MΩ

2013年7月20日星期六

Practice cement paste mixer

A) before stirring, mixing and stirring the pot

leaf first wipe with a damp cloth.
2) The sample weighed into the mixing pot.
3) Screw Conveyor the pot on the seat pan mixer, rose

to stir location.
4) start the machine, while slowly adding water

mixing, slow mixing

120s, stop mix 15s. Followed by rapid mixing

120s after stop, concrete batching plant the power

.
5) until the operation is finished, should be

cleaned of leaves and stir the pot stirring

cement paste mixer operation and use

Lever handle (20) can slide (18) driven by

stirring the pot along the column (21) of the

guide

Rails move up and down. Moves up position and

tighten the screws (19) concrete block machine be stirred,

Remove stirring the pot opposite. Look down from

the top of the blade rotation when Fang

Xiangshun

Needles. Revolution in the opposite direction.
First three switches (1K, 2K) are placed stop

position, and then time controller

Plug into the panel "programmed input" socket

and then prior to turning on the power

.
Electrical operation of both manual and

automatic
 
Auto: Set the switch to the automatic position

1K dial that automatically slow stirring 120

seconds

, Stopped 10 seconds after the alarm for 5

seconds, 120 seconds and stirring action, and

then automatically stop

. When an automatic program ends, if 1K switch

to stop, then 1K

Switch on automatically, and starts executing

the next automatic process. Each automatic

After the end of the program, you must switch to

stop 1K prevent programmable  concrete block machine after

power outage

Malfunction.
2, Manual: 1K dial the switch to the manual

position, and then the three switches set to 2K

To slow, stop, fast stop position, respectively,

to complete each action, artificial meter

Time.
Note: The three-phase power socket wiring must

ensure that the direction of the machine blade

revolution

Body of the standard in the same direction, or

vulnerable to damage stirring mechanism.