Anti-gear-skipping gear reversing machine

Abstract

The invention discloses an anti-gear-skipping gear reversing machine which comprises a gear reversing machine box, a gear shifting shaft, a shifting block, a shifting fork, an input gear, an advancing gear, a backward gear, a double-way combining gear and an output shaft. The shifting block is fixedly sleeved on the gear shifting shaft, the shifting fork is movably sleeved on a shaft neck of the shifting block, a convex-concave matching structure is arranged between the shifting block and the shifting fork, a lateral gap is formed between a boss and a groove in the convex-concave matching structure, a locking pin is mounted on the gear reversing machine, one end of the locking pin is abutted against a compression spring while the other end of the same is provided with conical protruding heads and rectangular locking teeth, rectangular locking grooves are formed in the shifting fork and matched with the rectangular locking teeth, and shifting teeth are arranged on the shifting block and matched with the conical protruding heads. During gear shifting, the shifting block idles relatively to the shifting fork and pushes the locking pin to unlock the shifting fork, and then drives the shifting fork to rotate to realize gear shifting. The shifting fork can be reliably and effectively locked, so that gear skipping is avoided to the greatest extent; a locking structure of the shifting fork cannot influence normal gear shifting operations, so that convenience, time saving and quickness in gear shifting operations are realized.

Description

technical field [0001] The invention relates to a reverse gear, in particular to a reverse gear with the function of preventing gear jumping. Background technique [0002] The reverse gear is generally used to realize the reverse running of the vehicle without turning around or the reverse running of some mechanisms. It is the conversion controller of the forward gear and the reverse gear. Take the reverse gear currently assembled on three-wheeled and four-wheeled motorcycles as an example. This type of reverse gear is mainly composed of a reverse gear case, a gear shaft, a shift fork, an input gear, a forward gear, a reverse gear, and a two-way combination. Composed of gears and output shafts, the two-way combination gear is set on the output shaft and is splined, the forward gear and the reverse gear are spaced on the output shaft and located on both sides of the two-way combination gear, the input gear and the forward gear and reverse gear The gears mesh simultaneously. ...

AI Technical Summary

Problems solved by technology

In this anti-skip gear structure, it is easier for the steel ball to exit the groove, and the locking reliability is poor. After a long time of use, the groove will be strained and deformed, and the gear jump phenomenon is likely to occur, causing safety accidents.

Especially the current three-wheel and four-wheel motorcycles often appear overloaded, and the load acting on the transmission system and transmitted to the shift fork is prone to overload, causing the steel ball to withdraw from the groove and jump gears.

There is also an external locking mechanism to lock the gear shaft or shift fork to prevent gear jumping, but in principle, it still does not break away from the above locking structure, resulting in poor locking reliability, and there are problems of complex structure and inconvenient operation

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