Working principle of hydraulic power system_温岭市奥达机械有限公司|AODA machinery_Working principle of hydraulic power system

2021-07-30

Working principle of hydraulic power system

The hydraulic power system mainly includes the structural characteristics of rack and pinion steering and the hydraulic system (hydraulic booster pump, hydraulic cylinder, piston, etc.). The basic working principle is that the hydraulic pump (driven by the engine belt) can provide oil pressure to push the piston, so as to generate auxiliary force to push the steering rod and assist the wheel steering.

Firstly, the mechanical equipment valve body (which can rotate with the steering column) on the steering gear. When the vehicle steering wheel does not rotate, the valve body remains in place, and the oil pressure on both sides of the piston is the same and in a balanced state. When the automobile steering wheel rotates, the steering control valve will be opened or closed accordingly. The oil on one side will directly return to the oil storage tank without passing through the hydraulic cylinder, and the oil on the other side will continue to be injected into the hydraulic cylinder, so that the pressure difference will be generated on both sides of the piston and pushed, resulting in auxiliary power to push the steering rod, making steering easier.

In the hydraulic steering system, for example, when the tire turns involuntarily due to the fierce beating of the wheel and touching the pothole Road, the vibration can be effectively buffered and absorbed through the action of hydraulic pressure on the piston, so as to greatly reduce the vibration transmitted to the vehicle steering wheel. The hydraulic power assisted technology of mechanical equipment is mature and stable, with high reliability and wide application fields. However, the structural features are complex and the maintenance cost is high. Moreover, the power of a simple mechanical hydraulic power assist system is not adjustable, so it is difficult to take into account the different requirements for pointing accuracy at low speed and high speed.