Concrete pump truck hydraulic system open and closed the advantages and disadvantages of what
Usually used in construction machinery walking, rotary, concrete pumping and other equipment.
But the system oil temperature is relatively high, the requirements of the hydraulic components more stringent, you must use a higher price closed pump.
Closed system does not need too much fuel tank, the momentary impact is smaller, variable control is convenient, less pollution, suitable for large flow system.
To meet this condition, the system's actuator is usually a hydraulic motor or a reciprocating pair of cylinders.
Only when the oil pump and oil return flow the same, it is possible to apply closed system.
