Set the value of the hydraulic system and crane bearing

In general, truck crane bearing hydraulic system pressure is 18 ~ 35MPa; through a multi way reversing valve, the hydraulic cylinder, hydraulic motor actuator to perform each action.

  Thus for the fault of hydraulic system pressure is insufficient, according to the form to diagnose five institutions loop,linear plain bearings , what is the insufficiency which loop system pressure.

  For example, rod reducing pressure, pressure is not up to the allowable value, which indicates lack of telescopic crane loop system pressure. Then according to the hydraulic circuit pressure is insufficient,mobile crane bearing , according to the basic form of the pressure pump oil supply mode and the hydraulic circuit, judge which is a hydraulic pump, an overflow valve malfunction caused by insufficient pressure.

Mobile crane bearing and the three oil supply

Fuel pump is three,mobile crane bearing small displacement pump as the outrigger retractable circuit and power supply circuit of rotary mechanism; the larger displacement pump for telescopic crane boom luffing loop and loop injection.( radar bearing ) The largest displacement oil pump and oil pump confluence in the larger displacement car combined control valve common power supply circuit for lifting mechanism.

  Whether two or three oil supply, oil supply,ship loader bearing the basic forms of hydraulic circuit for hydraulic pump, the pressure oil discharged a routing pressure relief valve adjustment after the return tank.