YCY14-1B swash plate pressure compensation variable piston pump/motor

Product description

CY14 axial piston pump is an axial piston pump that uses an oil distribution plate to distribute oil and the cylinder rotates. Compared with other types of pumps, it has the advantages of simple structure, small size, high efficiency, long life, light weight, Strong self-priming ability and so on.

It is suitable for machine tools, forging presses, metallurgy, engineering, mining and other machinery and other hydraulic transmission systems. The pump can also be used as a hydraulic motor only by changing the motor oil distribution plate.

Model Description

Working principle

The main part (refer to the structural section) is driven by the transmission shaft to rotate the cylinder body, so that the seven plungers evenly distributed on the cylinder body rotate around the center line of the transmission shaft, and the sliding shoe in the column slide assembly is pressed against the variable head ( or swash plate). In this way, the plunger reciprocates with the rotation of the cylinder to complete oil suction and oil pressure actions.

The outlet flow of the pressure-compensated variable pump varies with the outlet pressure approximately within a certain range according to the constant power curve. When the high-pressure oil from the main part enters the lower cavity (d) of the variable housing through passages (a), (b) and ©, the oil enters passages (f) and (h) through passage (e) respectively, when the spring When the force is greater than the hydraulic thrust from the oil passage (f) into the lower annular area of the servo piston, the oil passes through (h) to the upper chamber (g), pushing the variable piston down to increase the flow rate of the pump. When the hydraulic thrust acting on the annular area of the lower end of the servo piston is greater than the force of the spring, the servo piston moves upwards to block the channel (h), so that the oil in the (g) cavity passes through the (i) cavity to relieve pressure. At this time, The variable piston moves up, the deflection angle of the variable head decreases, and the flow rate of the pump decreases.

When adjusting the flow characteristics, you can first screw the limit screw to the upper end, adjust the spring sleeve according to the required flow and pressure range, so that the initial pressure when the flow begins to change meets the requirements, and then screw the limit screw to the end. The flow rate at the stage pressure does not change anymore, and the relationship between the flow rate and the pressure change in the middle is determined by the design of the pump itself.

Technical parameter

Dimensions