Applicable excavator PC400-7 main relief valve 723-40-92403

Working principle of excavator hydraulic system
The hydraulic system of excavator is an important part of excavator, which can use fluid machinery to realize the conversion of mechanical energy and potential energy, so that all actions of mechanical operation are coordinated and stable. The hydraulic system can also control the hydraulic components to meet a variety of different actions
The need. In the working process of the excavator, the normal operation of the hydraulic system can ensure the smooth operation of the machine, and also ensure the safety and reliability of the machine.
The working principle of the hydraulic system is mainly composed of hydraulic pump, hydraulic motor, hydraulic cylinder, pressure control valve, flow control valve, direction control valve, oil tank, oil pipe and so on. The basic work of the hydraulic system is to push the hydraulic pressure of the construction machinery by the high-pressure oil provided by the hydraulic pump
Cylinders, hydraulic motors and other actuator, resulting in a variety of movements.
Hydraulic pump is the hydraulic system in the low pressure oil through mechanical compression, so that its pressure to the required high pressure condition. The high-pressure oil flows through the outlet of the hydraulic pump to the various actuators of the system, and the hydraulic oil can also be generated by the hydraulic cylinder or the hydraulic motor
The pressure is fed back to the hydraulic pump, so that the volume of the hydraulic pump automatically ADAPTS to the working state under different working conditions.