Changing the hydraulic oil into the oil channels

Piston end of the cylinder chamber communicates end chamber of the piston into the oil chamber, into the oil chamber as the larger, the oil supply is constant, will lead to slow piston speed, stroke frequency is reduced, thus reducing the displacement of the concrete. However, since the cross-sectional area into the oil chamber and the concrete pump cylinder Screw Conveyor area ratio increases, so concrete pumping pressure increased, ie Figure 3-14 piping connections, enabling small displacement high pressure pump.Modern piston concrete pump, in order to meet the needs, concrete mixing machine a high and low voltage conversion function. Its conversion, usually hydraulic drive change, that is to change the hydraulic oil supply means to achieve high or low pressure pumping.