Shuttle-shaped gear engagement sleeve for gearbox

Abstract

The invention discloses a shuttle-shaped gear engagement sleeve for a gearbox. The shuttle-shaped gear engagement sleeve comprises an engagement sleeve body. A center through hole is formed in the center of the engagement sleeve body. An inner spline is arranged in the center through hole. Shifting fork grooves used in cooperation with shifting forks are formed in the peripheral wall of the engagement sleeve body. One ends of all spline teeth of the inner spline are correspondingly provided with tapered ends, and the other ends of all the spline teeth of the inner spline are correspondingly provided with circular arc enveloping surfaces formed by circular arc chamfers. The widths of the tapered ends are gradually increased in the direction from the side where the tapered ends are located to the middle of the engagement sleeve body. The tapered end and the circular arc enveloping surface are correspondingly arranged at the two ends of each spline tooth of the inner spline. In this way, during gear engagement, the tapered ends can extend into tooth grooves of other engagement teeth, so that fast and stable engagement is achieved, and fast gear engagement of a synchronizer is guaranteed; and the circular arc enveloping surfaces are in contact with an engagement tooth seat, a tangential force effect is generated, the engagement tooth seat is made to smoothly slide along the circular arc enveloping surfaces, and the stable gear engagement operation is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of gear transmission, and in particular relates to a shuttle-shaped gear meshing sleeve of a gearbox. Background technique [0002] The gearbox is composed of gears and shafts. It produces variable speed and torque through different gear combinations. Its functions mainly include: 1. Change the transmission ratio; 2. When the engine rotation direction remains unchanged, the car can run backwards; 3. Use neutral gear , to interrupt the power transmission so that the engine can start, idle, and facilitate the transmission to shift gears or perform power output. [0003] The single-degree-of-freedom sliding fit of the gearbox meshing sleeve is fitted on the meshing tooth seat, and under the action of the shift fork, it slides along the axial direction to realize the operation of engaging and disengaging. Although the existing gearbox meshing sleeves can meet the requirements of use to a certain extent, the mat...

AI Technical Summary

Problems solved by technology

Although the existing gearbox meshing sleeves can meet the requirements of use to a certain extent, the matching precision between it and the meshing gear seat is not high, and it cannot be shifted quickly, which not only makes the meshing sleeves easy to wear and damage, but also causes the gearbox to The operating feel is poor and the service life is reduced

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