Dual output inner rotor non-conical gear hydraulic motor

Abstract

The invention discloses a dual-output inner-rotor non-conical gear hydraulic motor. A shell comprises a left shell and a right shell, wherein the two shells are fastened through bolts; a left end cover is mounted outside the left end of the left shell and presses an outer ring of a left bearing; an inner ring of the left bearing is in interference fit with a left shaft shoulder of an output shaft; a left external non-conical gear is mounted in the left end of the left shell through a bolt and an inner spherical surface in a positioning manner; a right end cover is mounted outside the right end of the right shell and presses an outer ring of a right bearing; an inner ring of the right bearing is fixedly mounted on a right shaft shoulder of the output shaft; a right external non-conical gear is mounted in the right end of the right shell through a bolt and the inner spherical surface in a positioning manner; the left bearing and the right bearing in the middle of the output shaft are provided with a left internal non-conical gear and a right internal non-conical gear through interference spherical surface keying fit and are fixedly connected with the output shaft to form a whole rotor. The dual-output inner-rotor non-conical gear hydraulic motor has the characteristics of compact structure and high unit volume power; under some conditions of relatively low speed and heavy load, the dual-output inner-rotor non-conical gear hydraulic motor can replace a plunger type hydraulic motor which is of a complicated structure and is sensitive to oil dirt; the intensity of the gears can be improved, the phenomenon of oil trapping is eliminated, and the service life is prolonged.

Description

technical field [0001] The invention relates to a planetary gear type hydraulic power actuator, in particular to a double-output inner rotor non-conical gear hydraulic motor. Background technique [0002] In the prior art at home and abroad, relatively common low-speed high-torque hydraulic motors mainly include plunger type, vane type, gear type and non-circular planetary gear type. The flow rate of the vane pump is relatively uniform, the noise is low, the volume is small, the weight is light, and the service life is long. However, due to the influence of blade strength, oil absorption speed, wear and other factors, it cannot be used in low-speed and high-torque occasions, and the structure is complex; the plunger pump has the characteristics of compact structure, small unit power volume, high working pressure, etc., but it is very sensitive to oil pollution. , high oil filtration precision requirements, high maintenance costs, expensive; gear pump has the characteristics...

AI Technical Summary

Problems solved by technology

However, since the main mechanism of the non-circular (column) gear planetary hydraulic motor - the NGW non-circular gear planetary gear train, is mainly arranged on a plane, its radial size is large, the structure is not compact, and the configuration of the oil inlet and outlet holes is easy to install. Position interference, and the size and transmission ratio of the planetary gear are limited, which affects the displacement and output torque of the hydraulic motor

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