Shifting block

Abstract

The invention discloses a shifting block, wherein a pin-shifting component is provided on the block by at least one first mounting through-hole and one second mounting through-hole, the strike direction of two pin-shifting components matched with the mounting through-holes are opposite, two end surfaces setting the blocks to be parallel to each other are an end surface A and an end surface B; the first mounting through-hole comprises a first hole, a second hole and a third hole; the second mounting through-hole comprises a fourth hole, a fifth hole and a sixth hole; for any pin-shifting component, a supporting block is mounted in the first or the fourth hole, the outer end of a support section is laid in a support hole at the center of the supporting block and a pin section is extended outside of the end surface B or the end surface A from the third hole or the sixth hole. By the shifting block, gearshift of a stepped transmission mechanism is smoother. The invention has the advantages of convenient production, improved work efficiency and reduced working strength. The shifting block changes a traditional shifting mode, overcomes gear collision in shifting and realizes different gearshifts, thus the shifting block is suitable for popularization in various kinds of machinery; the shifting block can perform gearshift in either an OFF mode or an ON mode, thereby achieving a good prospect of application.

Description

Technical field [0001] The invention relates to the technical field of mechanical gear shifting, in particular to a stop block. Background technique [0002] Mechanical transmission mechanisms are commonly used in various types of equipment. They are usually divided into stepped transmission mechanisms with gears (such as automobile driving speed gears, machine tool transmission gears, etc.) and continuously variable transmission mechanisms (realized by friction transmission). [0003] The existing stepped speed change mechanism realizes different speed changes by gear shifting, that is, the fixed gear is connected by a key and fixed axially on one shaft, and the sliding gear is installed on the other shaft by a spline or other types of guide keys. It can slide up and axially. The handle moves the sliding gear to different positions to mesh with the corresponding gear through the shift fork. [0004] Although this mechanism is simple and easy to implement, it is prone to problems t...

AI Technical Summary

Problems solved by technology

[0004] Although this mechanism is simple and easy to operate, it is prone to the problem that the gear cannot be shifted or the shifting gear is not smooth. The reason is that only when the teeth of the sliding gear coincide with the teeth of the fixed gear can it mesh smoothly, otherwise the teeth will interfere with each other; There are even tooth collisions in the middle gear. Although many improvement measures have been taken (such as chamfering the two ends of the gears to facilitate guidance) to reduce the probability of tooth collisions, tooth collisions still occur from time to time.

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