Variable capacity type fluid pump

Abstract

The invention discloses a variable capacity type fluid pump. The fluid pump comprises shells, a swash plate, a cylinder column, a piston assembly, a check ring and an inclination adjusting part; a driving space is formed inside the shells; the swash plate is arranged in the driving space, can be installed in a rotating mode by taking supports as the center, and can adjust the inclination angle ofan inclination surface; the cylinder column is installed in the driving space and can rotate under the action of a driving shaft, and multiple air cylinder holes are formed in the inner part of the cylinder column along the direction parallel to the driving shaft; at least a part of the piston assembly is inserted into the interiors of the air cylinder holes of the cylinder column, and the pistonassembly is subjected to linear movement in the air cylinder holes while rotating along the cylinder column; the check ring is connected to the piston assembly, and rotates along with the piston assembly in the state that the piston assembly is attached to the inclination surface of the swash plate; and the inclination adjusting part enters and exits from the driving space through the shells, andin the process that the inclination adjusting part is inserted into the driving space, the inclination angle of the swash plate is adjusted by utilizing the tail end of one side of the inclination adjusting part to push the bottom surface of the swash plate.

Description

technical field [0001] The present invention relates to a fluid pump, in particular to a fluid pump capable of adjusting the inclination angles of a swash plate and a disk retaining ring installed on the swash plate by using an inclination adjustment part, thereby adjusting fluid pressure based on a piston . Background technique [0002] Common fluid pumps such as hydraulic pumps operate by utilizing phase changes that occur when a swash plate (Swash Plate) inclined on one side rotates. Next, its structure will be briefly explained. The piston is connected to the retaining ring by a piston shoe for generating fluid pressure through a linear moving action inside the cylinder. The circlip is used to stop the piston slipper and because the circlip is against the swashplate, it ultimately allows the piston to be snug against the swashplate. At this time, because the retaining ring is connected to the cylinder through the medium of the piston, the retaining ring will also rota...

AI Technical Summary

Problems solved by technology

[0005] However, in the existing capacity-adjustable swash plate pump, the structure for adjusting the inclination angle of the swash plate is relatively complicated.

For example, it is necessary to provide a separate drive unit for adjusting the rotation angle of the swash plate, and it is also necessary to provide a feedback mechanism for maintaining the state of the rotation angle after the change, which leads to the problem of an increase in the number of overall parts and manufacturing cost

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