Short-stroke synchronizer ring

Abstract

The invention belongs to a 20-ton grade wheeled car synchronizer part, in particular to a short-stroke synchronizer ring which can improve the rotation speed and pressure value of operation by providing a rectangular groove on a friction cone, thus reducing the size of the synchronizer ring and effectively shortening the axial size of a speed changer so as to lessen the volume and weight of the speed changer. By adopting the method that an isobathic rectangular groove is arranged on the friction cone of the synchronizer ring, the synchronizer ring can bear higher relative rotation speed in an out-of-service condition; in the combination process of the synchronizer, the rotation of a mating member of the friction cone of the synchronizer enables oil around the isobathic rectangular groove and the isobathic rectangular groove to do relative movement; and the oil film is damaged effectively due to the step effect of the isobathic rectangular groove, thus improving working pressure and relative rotation speed of the friction cone of the synchronizer ring. The two effects are superposed, which can improve the work performance of the short stroke synchronizer ring and prolong the service life thereof greatly.

Description

technical field [0001] The invention belongs to a 20-ton wheeled automobile synchronizer part, and more specifically relates to a short-stroke synchronous ring which improves the working speed and pressure value by opening a rectangular groove on the friction cone surface. Background technique [0002] During the shifting process of the automobile transmission, there is a speed difference between the shifting gear and the shaft. In this case, it is necessary to use the synchronizing ring in the synchronizer to synchronize the speed of the gear and the shaft through friction. In a 20-ton wheeled vehicle transmission, due to the increased moment of inertia of the parts that need to be synchronized, the friction load increases, resulting in increased wear of the synchronized ring and reduced service life. In recent years, in order to increase the power of the engine, its output speed has been continuously increased, resulting in an increase in the speed difference between the t...

AI Technical Summary

Problems solved by technology

In the 20-ton wheeled automobile transmission, due to the increased moment of inertia of the parts that need to be synchronized, the friction load increases, resulting in increased wear of the synchronous ring and reduced service life

In recent years, in order to increase the power of the engine, its output speed has been continuously increased, resulting in an increase in the speed difference between the two gears, which also increases the workload of the synchronous ring.

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