The working principle of an axial piston pump

Axial piston pumps are generally composed of main parts such as cylinder block, oil distribution plate, plunger and swash plate. There are multiple plungers in the cylinder body, and the plungers are arranged axially, that is, the center line of the plunger is parallel to the axis of the transmission shaft, so it is called an axial piston pump. However, it is different from the reciprocating piston pump, because its plunger not only does reciprocating motion in the pump cylinder, but also the plunger and the pump cylinder have a rotational motion relative to the swash plate. The plunger is in contact with the swash plate with a spherical end. There are high and low pressure crescent-shaped grooves in the oil distribution pan, which are separated from each other by a partition wall to ensure a certain tightness, and they communicate with the oil inlet and outlet of the pump respectively. There is an inclination angle between the axis of the swash plate and the axis of the cylinder block.
The working principle of the axial piston pump, when the motor drives the transmission shaft to rotate, the pump cylinder and the plunger rotate together, and the plunger head always keeps in contact with the swash plate, because the swash plate is at an angle to the cylinder body, so when the cylinder body rotates, the plunger does reciprocating motion in the pump cylinder. The plunger turns from 0 ° to 180 °, that is, to the position of the plunger above, and the volume of the plunger cylinder gradually increases, so the liquid sucks the oil cylinder through the suction port A of the oil distribution pan; As long as the propeller shaft is constantly rotating, the pump is constantly working.