Stepless variable plunger motor achieving single pin positioning

Abstract

The invention discloses a stepless variable plunger motor achieving single pin positioning. The stepless variable plunger motor comprises a shell and an end cover which are detachably connected, a containing cavity is formed in the shell, a main shaft penetrating through the shell is rotationally connected in the containing cavity, a cylinder body in power connection with the main shaft is arranged in the containing cavity, a plunger cooperating with the cylinder body is arranged on the outer side of the main shaft, a sliding shoe is hinged to the spherical face of the extending end of the plunger, the main shaft is rotationally connected with a first supporting block elastically connected with the shell, and a variable disc connected with the sliding shoe is hinged to the spherical face of the first supporting block. According to the stepless variable plunger motor, the first supporting block elastically connected with the shell is adopted for carrying out spherical face hinged positioning on the variable disc, then the volume of oil in a control cavity is changed so as to adjust extension and retraction of a push rod, the inclination angle of the variable disc and the axial position of the variable disc along the main shaft, and therefore the output of the main shaft is subjected to stepless adjustment; and compared with a traditional fixed variable disc and a traditional fixed-shaft variable disc, the variable disc has more excellent variable performance and variable space.

Description

technical field [0001] The invention relates to the technical field of hydraulic transmission and control, in particular to a single-pin positioning stepless variable plunger motor. Background technique [0002] Hydraulic travel motor is one of the most widely used hydraulic components in the field of modern hydraulic transmission and construction machinery. Among them, travel motors and reducers are often used in track drives. They are very important actuators for construction machinery or other production machinery. They can be regarded as high-precision Cutting-edge products, and the assembly of the product is to ensure whether the product performance can meet the requirements of the market and provide customers with better services. [0003] At present, the structure of the swash plate axial piston pump or plunger motor in the market mainly includes a housing, an end cover, a main shaft, two bearings matching the main shaft, and two cylindrical pins connecting the end co...

AI Technical Summary

Problems solved by technology

[0004] (1) The fixed variable disk cannot be adjusted for input and output, and its use is limited;

[0005] (2) The variable coil of the fixed axis type rotates within a small angle range around the fixed axis, and can adjust the input and output, but the control variable range is small, and the use is relatively limited

[0006] (3) The commonly used connection method between the shell and the end cover is a two-pin structure on one side, that is, through the cooperation of the end face, it is positioned by two cylindrical pins. This structure has been used for many years, and it can play a role in positioning and orientation to a certain extent. , but in the processing process, the positions of the two cylindrical pins need to have good position requirements with the spindle and bearings, which increases the processing intensity and production cost to a certain extent

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