A walking device for a coal mining machine

Abstract

The invention discloses a traveling device for a coal mining device. A driving wheel shaft, a first idler shaft, a second idler shaft and a chain wheel shaft are in engaged transmission sequentially through gears; a traveling wheel is arranged on the chain wheel shaft and located in a traveling track of a scraper conveyor; a guiding sliding shoe is composed of two guiding assemblies, the two guiding assemblies are located on the two sides of the traveling track correspondingly, and the upper ends of the guiding assemblies are fixed to the lower end of a traveling box body; herringbone teeth are arranged on the outer circumferential face of the traveling wheel and in the traveling track correspondingly; grooves are formed in the two guiding assemblies correspondingly and each internally provided with a plurality of roll balls; the traveling device further comprises end cover plates; and a strip-shaped through hole is formed in each end cover plate, the end cover plates are fixed to thesurfaces of the grooves for enabling the roll balls to roll in the grooves, the roll balls are partially protruded out of the strip-shaped through hole, and the width of the strip-shaped through holeis slightly smaller than the diameter of each roll ball. Friction between the traveling wheel and the traveling track can be reduced, in addition, friction force of the guiding sliding shoe and the two sides of the traveling track can be reduced, and thus the operation stability of the coal mining machine is ensured finally.

Description

technical field [0001] The invention relates to a walking device for a coal mining machine, which belongs to the technical field of coal mining machines. Background technique [0002] With the development of comprehensive coal mining equipment in China, the equipment is becoming more and more abundant, and the shearer is one of the most important mining equipment. The walking device of the coal mining machine is a device for directly moving the coal mining machine, which is realized through the meshing transmission of its traveling wheels and the traveling track of the scraper conveyor. Due to the meshing between the walking wheels and the running track of the conveyor through helical gears or spur gears, its strength is generally lower than that of the rack wheels of the conveyor, and shaking during walking will cause the walking wheels to contact the left or right side of the running track , And then cause the walking wheel to be easily invalidated after being worn out, f...

AI Technical Summary

Problems solved by technology

Failure of these two parts will cause the shearer to fail to work, resulting in huge economic losses and even casualties.

[0003] For the problem of easy wear and failure of the road wheels and guide shoes, the current method is to improve the materials of the road wheels and shoes, and increase the service life of the road wheels and guide shoes by using wear-resistant materials or high-strength materials. However, this method of replacing materials not only increases more processing and processing costs, but also has no obvious effect of improving the service life after actual use, so it cannot meet the needs of coal mining.

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