Small roller combined type coal mining machine with large mining height

Abstract

The invention relates to a small roller combined type coal mining machine with a large mining height. The small roller combined type coal mining machine comprises a machine body overall structure, a walking mechanism, combined height adjustment devices and coal cutting rollers, wherein the walking mechanism is arranged on the lower side of the machine body overall structure; the combined height adjustment devices are symmetrically mounted on two side surfaces of the machine body overall structure; each combined height adjustment device comprises an upper height adjustment rocker, an upper height adjustment oil cylinder, a lower height adjustment rocker and a lower height adjustment oil cylinder; the upper height adjustment rocker of each combined height adjustment device is hinged to the upper side surface of the corresponding lower height adjustment rocker through a pin shaft; each lower height adjustment rocker is hinged to a hinge ear on the corresponding side surface of the machine body through a pin shaft; the tail end of each upper height adjustment rocker and the tail end of the corresponding lower height adjustment rocker are rotationally connected with the corresponding coal cutting rollers respectively. According to the small roller combined type coal mining machine with the large mining height, swinging cutting is realized through combination of the combined height adjustment rocker devices and the small-diameter rollers, the height adjustment range of the rollers is increased, and the coal mining machine has a large mining height and is suitable for mining thick coal seams and ultra-thick coal seams.

Description

technical field [0001] The invention belongs to underground mining equipment and mining technology of coal mines, and is a small-drum combined large-height coal mining machine suitable for mining thick coal seams and ultra-thick coal seams. Background technique [0002] At present, the underground coal mining technology of coal mines is a comprehensive mechanized coal mining technology, and its coal mining equipment is a double-drum coal mining machine. When the double-drum shearer is working, the front drum cuts coal and rock along the roof, and the rear drum cuts coal and rock along the bottom. The sum of the diameters of the two drums is greater than or equal to the thickness of the coal seam to be mined, so as to realize the full height of the thick coal seam at one time. However, the height adjustment range of the traditional double-drum shearer is limited, which cannot meet the full height of one-time mining of thick coal seams. [0003] With the continuous improvemen...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a small drum suitable for mining thick coal seams and ultra-thick coal seams in view of the above problems of the traditional double-drum large mining height shearer, such as the limited range of height adjustment of the rocker arm and the realization of the mining height by increasing the diameter of the drum. The combined large mining height shearer realizes the large-scale rotation of the drum in the vertical plane and meets the technical requirements for mining thick and ultra-thick coal seams

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