Locking device for overgear and reverse gear and locking method

Abstract

The invention discloses a locking device for an overgear and a reverse gear and a locking method. A support is arranged on an operating casing, a shifting rod is arranged at one end of a gear-shiftingguiding block, the gear-shifting guiding block drives the shifting rod to trigger a guiding block on the support to rotate, when the overgear is engaged, the shifting rod is located on the opening side of a guiding block locking groove, in the gear removal process, the shifting rod enters the locking groove and drives the guiding block to rotate, when the guiding block is positioned by a first rotation stopping surface, the shifting rod is still located in the locking groove at the moment, then the gear-shifting guiding block rotates to the reverse gear position currently, and the problem that the reverse gear is engaged mistakenly in the overgear removal process is solved. The locking device is arranged on the operating casing, the condition is relatively greatly different from the conditions that existing locking mechanisms are arranged on transmission casings and shifting fork shafts, and on the premise that the overall structure arrangement of current products is not changed, thelocking device thoroughly solves the potential safety problem that a driver removes the overgear and engages the reverse gear mistakenly.

Description

technical field [0001] The invention relates to the technical field of transmissions, in particular to a locking device and locking method for an overspeed gear and a reverse gear. Background technique [0002] Due to its own structural characteristics and shifting rules, the five-speed light commercial vehicle transmission generally shares a set of synchronizer or sliding sleeve structure with overdrive and reverse gear, but there is a possibility that the driver may mistakenly select the overdrive gear into the reverse gear during driving. potentially dangerous. [0003] Imported vehicles are generally equipped with overdrive and reverse gear lock safety devices, but the five-speed transmission of imported vehicles is mostly a control system with a single shift fork shaft structure, while domestic vehicles are mostly a control system with a multi-shift fork shaft structure. Due to the large structural differences, the overdrive and reverse lock safety devices of imported ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem in the prior art that the overspeed gear is mistakenly selected into the reverse gear, the present invention provides a locking device and locking method for the overspeed gear and the reverse gear. The position is limited during the process, which solves the problem that the overspeed gear is mistakenly selected into the reverse gear, and improves the safety of driving

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