Eight-gear transmission gear structure

Abstract

The invention discloses an eight-gear transmission gear structure. The eight-gear transmission gear structure comprises a plurality of shifting fork shafts arranged in parallel, and the shifting forkshafts comprise the reverse first-gear shifting fork shaft, the second-gear and third-gear shifting fork shaft, the fourth-gear and fifth-gear shifting fork shaft, the sixth-gear and seventh-gear shifting fork shaft and the eighth-gear shifting fork shaft; the eighth-gear shifting fork shaft is located at the positions, except for the two sides, of the five shifting fork shafts arranged in parallel, and the fourth-fifth-gear shifting fork shaft is located on one sides of the five shifting fork shafts arranged in parallel; and the fourth-fifth gear shifting fork shaft is shorter than the eighthgear shifting fork shaft. After the length and the position arrangement of the shifting fork shaft are adjusted, the eight-gear shifting fork shaft can pass through the space between two intermediateshaft overdrive gears and cannot influence the intermediate shaft overdrive gears, and after the length of the fourth-fifth-gear shifting fork shaft is shortened, the fourth-fifth-gear shifting forkshaft does not need to penetrate through the intermediate shaft overdrive gears, so that interference between the shifting fork shaft and the overdrive gear is avoided in the mounting process of the shifting fork shaft, the mounting height of the shifting fork shaft is reduced, and the strength of the shifting fork is enhanced.

Description

technical field [0001] The invention relates to a transmission gear structure, in particular to an eight-speed transmission gear structure. Background technique [0002] The gear structure of the existing transmission is as follows: figure 1 As shown, it includes a shift lever A, a plurality of shift forks B, and a plurality of shift fork shafts C corresponding to the plurality of shift forks B. The transmission in the prior art generally has six gears and one reverse gear, so the shift fork includes a reverse gear Shift fork B1, first / second gear shift fork B2, third / fourth gear shift fork B3 and fifth / sixth shift fork B4, the corresponding shift fork shafts include reverse shift fork shaft C1, first / second shift fork shaft C2, The third / fourth gear shift fork shaft C3 and the fifth / sixth gear shift fork shaft C4, and the distance between the shift fork B on the shift fork shaft C and the bottom end of the shift lever A decreases in turn and then increases, as figure 1 As...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a gear structure of an eight-speed transmission, which is used to solve the problem that the installation height of the shift fork shaft of the shift mechanism is increased, resulting in a decrease in the strength of the shift fork when facing a multi-intermediate shaft transmission

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