Use and maintenance of plate bending machine hydraulic pump (1)
1. The function of the hydraulic pump of the plate rolling machine
In the hydraulic transmission system, the energy device provides energy for the entire hydraulic system, just like the human heart transports blood to various parts of the human body, and plays an extremely important role in the entire hydraulic system.
The hydraulic pump of the plate bending machine is an energy conversion device that converts the mechanical energy of the drive motor into the pressure energy of the oil to meet the needs of the actuator to drive external loads.
The working principles of the plate bending machine hydraulic pumps currently used in the hydraulic system are almost the same, which rely on the volume change of the hydraulically sealed working chamber to achieve oil absorption and pressure. Therefore, it is also called a volumetric plate bending machine hydraulic pump. .
2. Classification of hydraulic pumps for plate rolling machines
①According to whether the volume of oil output by the hydraulic pump of the plate bending machine can change per unit time
a. Fixed displacement pump - the oil volume output per unit time cannot change.
b: Variable displacement pump - the volume of output oil per unit time can be changed.
② According to the structure of the pump
a. Gear pump - can be divided into internal gear pump and external gear pump.
b. Vane pump - can be divided into single-acting vane pump and double-acting vane pump.
c. Piston pump - can be divided into radial piston pump and axial piston pump.
3. Precautions for using the hydraulic pump of the plate rolling machine
Although the structures of hydraulic pumps for plate bending machines are quite different, there are many similarities in installation and use.