Method and device for positioning gears on shaft

Abstract

The invention provides a method and a device for positioning gears on a shaft, which mainly solve the problem of incapability of rapidly accurately assembling the traditional speed changer into a transmission shell due to increased gears on a main shaft and lengthened assembly caused by increased gear shifts . The method for positioning the gears on the shaft comprises the following steps: 1) shortening a distance between each two gears; 2) installing the gears into the transmission shell; and 3) recovering each gear to a working position. The device for positioning the gears on the shaft comprises a gear shaft, a spline pad and the gears, wherein external teeth of the spline pad are adaptive to internal teeth of the gears; and internal teeth of the spline pad are adaptive to external teeth of the gears. According to the invention, the structure is simple; the difficult problem that a snap ring structure cannot be designed for gears of a transmission with a small central moment is solved; a new design scheme is provided for limiting the gears of a twin countershaft transmission simultaneously; and due to the design, a twin shaft assembly is easy to assemble, parts are reduced and cost is decreased simultaneously.

Description

technical field [0001] The invention relates to a gear positioning method and a positioning device on a shaft, in particular to a gear positioning method and a positioning device on a shaft in a gearbox. Background technique [0002] With the development of the automobile industry, users need transmissions with many gears and low input torque. Therefore, the demand for small center moment double countershaft transmissions becomes increasingly urgent. [0003] During the assembly process of the small center moment double countershaft gearbox, on the premise of not increasing the volume of the gearbox, the overall length of the two-shaft assembly needs to be shortened before it can be installed in the gearbox. working position; however, when using the existing installation method, the spline pad of the fixed gear restricts the axial movement of the gear, and the key restricts the axial rotation of the spline pad. It is difficult to return to the working position inside, and t...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an on-shaft gear positioning method and a positioning device, which mainly solves the problem that the existing transmission cannot be quickly and accurately assembled into the transmission case due to the increase in gears, the increase in parts on the main shaft, and the elongation of the assembly.

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