Coal mining machine and method for improving mining rate of thin coal seam

Abstract

The invention belongs to the field of underground thin coal seam mining equipment, and particularly relates to a device and method for improving the mining rate of a thin coal seam. The device for improving the mining rate of the thin coal seam comprises a power input device, a walking device and a tunneling device installed on the walking device, the power input device provides power for the tunneling device, two sets of drill rods capable of drilling forwards are arranged on the tunneling device, and the drilling ends of the drill rods are fixedly connected with detachable tunneling heads or cutting devices. The cutting device comprises a gearbox, a spillplate, a cutting head, a bearing I and a conical bevel gear, the inner surface of the gearbox is connected with a small bevel gear assembly perpendicular to the coal surface through the bearing I, the bearing I is fixed to the inner surface of the gearbox, the small bevel gear assembly is connected with the drill rod through a pin shaft. The small bevel gear assembly is meshed with a large bevel gear assembly parallel to the coal surface, the large bevel gear assembly is hinged to the left side and the right side of the gearbox through a bearing II, and the large bevel gear assembly is connected with the cutting head.

Description

technical field [0001] The invention belongs to the field of underground thin coal seam mining equipment, in particular to a device and method for increasing the thin coal seam mining rate. Background technique [0002] As a large coal-producing country, my country's energy output is very dependent on coal. The output of coal resources basically depends on the mining of medium-thick coal seams, thick coal seams and extra-thick coal seams. Thin coal seams are waiting to be mined due to low efficiency, small mining area space, inconvenient labor for workers, and poor economic benefits. Cuttings accounted for only one-tenth of the total. But so far, the mineable resources of thin coal seams and extremely thin coal seams identified in my country account for about one-fifth of the total coal mineable resources. Due to the dwindling of coal resources, many coal mining industries have intensified the mining of thin coal seams and are expanding continuously. Thin coal seams will g...

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Problems solved by technology

[0005] In order to solve the problem of low mining efficiency in thin coal seams, the present invention provides a coal mining machine and method for increasing the mining rate

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