Novel gear selecting and shifting mechanism assembly for speed changer

Abstract

The invention discloses a novel gear selecting and shifting mechanism assembly for a speed changer. The novel gear selecting and shifting mechanism assembly comprises a small cover assembly and a shifting fork shaft assembly, wherein the small cover assembly comprises a self-locking mechanism, an interlocking mechanism and a neutral gear and reverse gear signal selecting device; six gear shifting positions are set in the shifting fork shaft assembly; the self-locking mechanism consists of a self-locking pin shaft and a fan-shaped self-locking block; the interlocking mechanism consists of a fork-shaped interlocking fork; the small cover assembly comprises a small cover shell, a gear shifting shaft, a sensor driving ring, a driving pin, a fan-shaped self-locking block, a gear shifting head, a centering base ring, a distance ring, a centering spring, the self-locking pin shaft and the interlocking fork; the shifting fork shaft assembly comprises a shifting fork shaft, a shifting block, a shifting fork and a friction plate; the friction plate is arranged in a fork pin of the shifting fork and is compressed with the surface of the shifting fork tightly; and a synchronizer sliding disc is arranged in a fork pin groove of the shifting fork. Compared with the prior art, the novel gear selecting and shifting mechanism assembly has the advantage that in the gear shifting process, a friction material can buffer impact when the synchronizer sliding disc is shifted by the shifting fork, so that gears is shifted stably.

Description

technical field [0001] The invention relates to a gear selection and shifting mechanism assembly of a transmission, which belongs to the field of auto parts. Background technique [0002] The transmission with double countershaft structure has the advantages of compact structure, large transmission torque and long life, and is widely used in medium and heavy trucks. At present, most of the main boxes of double countershaft structure transmissions use sliding sleeves to shift gears. Difficult and requires high driving skills of the driver. Aiming at the double countershaft transmission newly designed by our company for main box synchronizer shifting, on the basis of the existing shifting mechanism, adaptive development is carried out to obtain a new type of transmission shifting mechanism assembly. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an easy-to-operate, reliable and stable shifting mechanism. [0004...

AI Technical Summary

Problems solved by technology

[0002] The transmission with double countershaft structure has the advantages of compact structure, large transmission torque and long life, and is widely used in medium and heavy trucks. At present, most of the main boxes of double countershaft structure transmissions use sliding sleeves to shift gears. Difficult, high requirements for driver's driving skills

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