Hydraulic plunger pump swash plate inclination angle stepless adjusting mechanism and adjusting method thereof

Abstract

The invention discloses a hydraulic plunger pump swash plate inclination angle stepless adjusting mechanism and an adjusting method thereof. The hydraulic plunger pump swash plate inclination angle stepless adjusting mechanism comprises a plunger pump shell; a swash plate is arranged at one end of the plunger pump shell; an adjusting screw hole corresponding to the swash plate in position is further arranged in the plunger pump shell; a stepless adjusting follow-up piston sleeve is arranged in the adjusting screw hole; the inner side of the stepless adjusting follow-up piston sleeve is sleevedwith a fixed follow-up piston matched with the swash plate; and a locking nut is arranged on the outer side of the stepless adjusting follow-up piston sleeve. According to the invention, the follow-up piston is designed to be of a fixed length, the follow-up piston sleeve is designed to be of an adjustable structure capable of going in and out of the adjusting screw hole of the shell; when the inclination angle of the swash plate is adjusted, the stepless adjustment of the angle of the swash plate can be completed without disassembling the follow-up piston and the follow-up piston sleeve, andthe expected angle of the swash plate is achieved; and therefore, length grading of the follow-up piston is avoided, the adjustment of the inclination angle of the swash plate is greatly facilitated,and the hydraulic plunger pump swash plate inclination angle stepless adjusting mechanism has the characteristics of being convenient to adjust, low in adjusting cost and free of pollutant entering in the adjusting process.

Description

technical field [0001] The invention relates to a hydraulic plunger pump swash plate inclination adjustment mechanism, in particular to a hydraulic plunger pump swash plate inclination stepless adjustment mechanism and an adjustment method. Background technique [0002] The hydraulic pump is the core component of the hydraulic system, which provides the power source for the hydraulic system. During the use of the hydraulic pump, when the hydraulic user needs it, the inclination angle of the swash plate of the hydraulic pump is at the maximum angle, so that the displacement of the hydraulic pump is at the maximum state. That is, the output flow of the hydraulic pump is the maximum value. In common use, the inclination angle of the large flow swash plate of the hydraulic pump is controlled by the length of the follower piston. If the swash plate angle is too small, it is necessary to replace the follower piston with a shorter length. If the swash plate inclination angle is too...

AI Technical Summary

Problems solved by technology

In common use, the inclination angle of the large flow swash plate of the hydraulic pump is controlled by the length of the follower piston. If the swash plate angle is too small, it is necessary to replace the follower piston with a shorter length. If the swash plate inclination angle is too large, it is necessary to replace the longer piston. Therefore, in order to ensure that the inclination angle of the swash plate of the hydraulic pump can meet the maximum range of the design value, it is often necessary to classify the length of the follower piston and process it according to each level during design. During the use or test of the hydraulic pump , if the angle of the swash plate of the hydraulic pump is not enough, it can only be adjusted by replacing the follower piston in stages to meet the appropriate swash plate angle. When replacing the follower piston, the follower piston sleeve must be disassembled. The whole replacement adjustment process is very inconvenient. Moreover, foreign pollutants will easily enter the pump cavity when being replaced in the field, which will affect the use; at the same time, since each level of follower piston needs to be processed, it is not conducive to production management and cost reduction.

Therefore, the existing technology has the problems of inconvenient adjustment, easy to bring in pollutants during adjustment and replacement, and high adjustment cost.

Images