Conveniently assembled and maintained axle speed reducer

Abstract

The invention discloses a conveniently assembled and maintained axle speed reducer for solving the problems of more related parts in the assembly link, assembling quality and efficiency influences, field maintenance difficulty and the like existing in the existing traditional axle speed reducer. The conveniently assembled and maintained axle speed reducer comprises a speed reducer shell, a power input shaft supporting structure, an axle shell, a half shaft, a differential and a driven gear. The conveniently assembled and maintained axle speed reducer is technically characterized in that the power input shaft supporting structure is composed of two columns of bearings with the same outer ring structures, input torque flanges for fastening and supporting the bearings and locking nuts, wherein outer rings of the two columns of bearings are assembled in bearing assembling holes with the same internal diameters of the speed reducer shell; and inner rings are fastened and supported on the corresponding shaft diameters of a driving gear shaft through the input torque flanges and the locking nuts. The conveniently assembled and maintained axle speed reducer is simplified in structure, reasonable in design and convenient in assembling and field maintaining operations; and instability caused by speed reducer bearing assembling and pre-tightening and clearance variation is effectively eliminated, the bearing assembling precision is remarkably improved, the vibration noise and rotation resistance of the power input shaft supporting structure is reduced, and the service life of the speed reducer is prolonged.

Description

technical field [0001] The invention relates to an automobile transmission device, in particular to an axle speed reducer with convenient assembly and maintenance for transmitting driving force to front wheels or rear wheels. Background technique [0002] In the face of low-emission environmental protection requirements, in recent years, the quality pressure of domestic mini-cars, light buses and imported cars has become more and more intense, and the requirements for chassis drive life, noise and transmission efficiency (reducer noise and warranty period) have become more and more intense; That is, use excellent (low resistance) for bearings and gears, improve the assembly accuracy of gears and bearings, and finally achieve prolonging the service life of bearings and reducing the vibration and noise of the shaft support of the driving gear. Domestic companies are upgrading the technology of the core gear first, and are solving the gear upgrade; corresponding to the systemat...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an axle reducer with convenient assembly and maintenance, which solves the problems of the existing traditional axle reducer that there are many associated parts in the assembly link, which affects the quality and efficiency of assembly, and the difficulty of on-site maintenance. Its structure is simplified, Reasonable design, convenient assembly and on-site maintenance operations, effectively eliminate the instability caused by the assembly preload and clearance variation of the reducer bearing, significantly improve the bearing assembly accuracy and reduce the vibration noise and rotation resistance of the power input shaft support structure, Extend the service life of the reducer

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