Hydraulic machines usually refer to hydraulic pumps and hydraulic motors. Both hydraulic pumps and hydraulic motors are energy conversion devices in the hydraulic system. The difference is that the hydraulic pump converts the mechanical energy of the drive motor into the pressure energy of the oil. It is the power device in the hydraulic system. The hydraulic motor converts the pressure energy of the oil into mechanical energy and is the actuator in the hydraulic system.

The hydraulic pumps and hydraulic motors commonly used in hydraulic systems are volumetric, and their working principle is to use the change of sealing volume to absorb and press oil. In terms of working principle, most hydraulic pumps and hydraulic motors are reciprocal, that is, input pressure oil, the hydraulic pump becomes a hydraulic motor, and can output speed and torque, but in terms of structure, hydraulic pumps and hydraulic motors are still There are some differences.

It is a device that uses liquid to transmit pressure. When a liquid transmits pressure in a closed container, it obeys Pascal's law. The hydraulic transmission system of a hydraulic press is composed of a power mechanism, a control mechanism, an actuator, an auxiliary mechanism and a working medium. In order to meet the requirements of the movement speed of the actuator, one oil pump or multiple oil pumps are selected. Gear pump for low pressure (oil pressure less than 2.5MP); vane pump for medium pressure (oil pressure less than 6.3MP); plunger pump for high pressure.

The above is the working principle of the hydraulic motor introduced by the editor. I hope it will be helpful to you and have a better understanding of the hydraulic motor.