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Axial Piston Motor

Nov 27, 2018

In addition to the valve type distribution, the axial piston pump can be used as a hydraulic motor in principle, that is, the axial piston pump and the axial piston motor are reversible. The working principle of the axial piston motor is that the oil distribution plate and the swash plate are fixed, and the motor shaft is rotated together with the cylinder body. When the pressure oil enters the plunger hole of the cylinder through the window of the oil distribution plate, the plunger protrudes under the action of the pressure oil, and is closely attached to the swash plate, and the swash plate generates a normal reaction force p to the plunger, and the force can be decomposed It is the axial component and the vertical component Q. Q is balanced with the hydraulic pressure on the plunger, and Q causes the plunger to generate a torque to the center of the cylinder, which drives the motor shaft to rotate counterclockwise. The instantaneous total torque produced by the axial piston motor is pulsating. If the motor pressure oil input direction is changed, the motor shaft rotates clockwise. The change in the inclination angle a of the swash plate, that is, the change in the displacement, affects not only the torque of the motor but also its rotational speed and steering. The greater the inclination of the swashplate, the greater the torque generated and the lower the rotational speed.