Gear shifting mechanism

Abstract

The invention relates to the technical field of gear shifting transmission devices, in particular to a gear shifting mechanism. The gear shifting mechanism comprises a pulling rod, clamping keys, an elastic part, a gear shaft and gears; the gear shaft is provided with a through hole in the axial direction, and the side face of the gear shaft is provided with a waist-shaped hole; the gears are arranged on the gear shaft in a hollow sleeving mode, and inner rings of the gears are provided with clamping grooves; and the pulling rod is slidably arranged in the through hole and provided with the clamping keys, the elastic part is arranged in the pulling rod, one end of each clamping key is provided with an inclined face, the elastic part is connected with the clamping keys, and the ends, with the inclined faces, of the clamping keys can stretch out of the waist-shaped hole under the elastic force of the elastic part. According to the gear shifting mechanism, the structure of a synchronizeris omitted, and the gears do not need to be moved in the gear shifting process; and the defect of gear impacting or gear shifting failing in the gear shifting process is overcome, the space in a gearbox is reduced, therefore, the speed change structure is simple and compact in layout, and the cost of the gear shifting mechanism and the gearbox is reduced.

Description

technical field [0001] The invention relates to the technical field of shifting transmission devices, in particular to a shifting mechanism. Background technique [0002] Agricultural machinery products need to set different gears due to the need for different speeds. Conventional gear shifts use synchronizers or direct gear shifts. The gear shifting of the synchronizer involves the problems of high machining accuracy and high cost. However, when there is a misalignment of the driving and driven gears in gear shifting, there will be a gear end face impact and the gear cannot be shifted, and there is a defect that the axial dimension is relatively large. Contents of the invention [0003] The purpose of the present invention is: for the gear shifting operation in the existing gearbox in the prior art, the gear shifting is realized through the meshing of the synchronizer and the gear, or the gear moves and shifts, and there is a gap between the synchronizer and each gear, w...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is: for the gear shifting operation in the existing gearbox in the prior art, the gear shifting is realized through the meshing of the synchronizer and the gear, or the gear moves and shifts, and there is a gap between the synchronizer and each gear, which increases the The problem of the space inside the gearbox, and the problem that the gears are prone to misalignment during gear shifting, resulting in the problem that the gear end face cannot be shifted due to impact, provides a gear shifting mechanism

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