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SHACMAN X3000 truck parts Hydraulic Cabin lifting pump DZ97259820125

DZ97259820125

Carton

In the first stage (oil suction stage), the operating rod of the cab oil pump drives the manual plunger to slide upward through the drive shaft and the CAM mechanism, the volume formed between the manual plunger and the pump cover becomes larger, the larger volume generates negative pressure, and the hydraulic oil in the oil pump tank enters the plunger cavity through the check valve at the bottom of the plunger due to the action of atmospheric pressure. At the same time, the check valve on the phase valve is closed due to the double action of the negative pressure in the plunger cavity and the spring on the check valve, which prevents the return of the oil pressure liquid in the tubing.

In the second stage (oil pressure stage), the operating rod of the cab oil pump through the drive shaft and CAM mechanism drives the manual plunger to slide downward, the volume formed between the manual plunger and the pump cover becomes smaller, the plunger compressions the hydraulic oil to produce pressure, and the check valve at the bottom of the plunger closes due to the pressure of the oil and the gravity of the steel ball itself. At the same time, because the pressure of the oil in the plunger chamber rises, the force on the steel ball acting on the oil is greater than the spring force, and the check valve is opened. Due to the presence of load at the oil outlet, the pressure at the outlet increases. The outlet pressure of the cab lift pump is determined by the load. Repeat the above two stages, you can make the cab pump continuous high-pressure oil flow. The direction change of the high-pressure oil can be controlled by the directional valve with different functions on the cab manual lift oil pump. The cab lift cylinder is raised and lowered

The cab oil lift pump comprises a pump housing, a pump cover, a reversing valve, a plunger pay, a fork, a bidirectional valve cover, an oil inlet connector, an oil outlet connector and a return spring, and the pump cover is fixed to the lower end of the pump housing