As the most important components in the hydraulic transmission system, the hydraulic pump and the hydraulic motor, one is the power component, the other is the executive component, one converts mechanical energy into hydraulic energy, and the other converts hydraulic energy into mechanical energy. Complex mechanical movement and stronger mechanical torque are provided, so what is the difference between them?

Similarities between hydraulic motors and hydraulic pumps

1. In principle, hydraulic motors and hydraulic pumps are reversible. If driven by an electric motor, the output is pressure energy (pressure and flow), which is the hydraulic pump; if pressure oil is input, the output is mechanical energy (torque and flow). speed), it becomes a hydraulic motor. This is like the relationship between a generator and a motor, as long as some specific parameters are changed, the opposite working process can be realized.

2. From a structural point of view, the two are similar.

3. The hydraulic motor and the hydraulic pump have the same basic structural elements - a closed volume that can be changed periodically and a corresponding oil distribution mechanism. The working principle of the hydraulic motor and the hydraulic pump is to use the change of the sealed working volume to absorb and discharge oil.

For hydraulic pumps, oil is sucked when the working volume increases and high-pressure oil is discharged when the working volume decreases. For hydraulic motors, high-pressure oil enters when the working volume increases and low-pressure oil is discharged when the working volume decreases.