Thin coal bed fully-mechanized mining scraper conveyor

Abstract

The invention relates to a thin coal bed fully-mechanized mining scraper conveyor comprising a machine head (1), a machine tail (12), a middle groove (6), a scraper chain, and the like, wherein middle plates of the machine head (1) and the machine tail (12) are horizontally arranged and form an included angle of 0+6 to 0-20 degrees with the middle plate of the middle groove (6) and positioned at the same height; scraper running lower chain ways (4 and 9) of the machine head (1) and the machine tail (12) are in shapes of inverse curves; and the bottoms of the machine head (1) and the machine tail (12) are provided with hoistable poppets (2 and 11) capable of adjusting the heights of the machine head (1) and the machine tail (12). The invention can solve the problems that triangle coal is not remained at both ends of a thin coal bed fully-mechanized mining face, and returning coal is conveyed by the lower chain ways (4 and 9); a machine head coal dropping device and a machine tail recovering device can solve the problems of poor coaling effect of a thin coal bed coal-winning machine and recovery cleanness of float coal positioned at both ends of the thin coal bed fully-mechanized mining face; the scraper chain with a wide chain pitch can permit larger-lump bastard coal to pass through a bottom bracket of the coal-winning machine; the invention is suitable for the fully-mechanized mining of a thin coal bed dug from top to bottom, especially suitable for the fully-mechanized mining of a thin coal bed containing ferric sulfide concretions or / and hard gangues, and also suitable for the fully-mechanized mining of a moderate thick coal bed and a thick coal bed.

Description

technical field [0001] The invention relates to a scraper conveyor for fully mechanized mining equipment in coal mines, in particular to a scraper conveyor for fully mechanized mining of thin coal seams which is suitable for excavating the bottom of a thin coal seam along the top; it is especially suitable for lump coal, It is used in the fully mechanized mining face of thin coal seams containing iron sulfide nodules and / or hard gangue. Background technique [0002] The fully mechanized mining face in thin coal seams has small mining height, many supporting equipment, and little space for passing people. For the scraper conveyor of the traditional thin coal seam fully mechanized mining face, the machine head and tail are higher than the middle trough, and the middle plates of the machine head and tail are upturned, and the traction device of the shearer installed there must also be raised to a certain height . When the shearer runs to the nose and tail, the fuselage will ...

AI Technical Summary

Problems solved by technology

[0004]In order to overcome the upturning of the head and tail of the existing thin coal seam scraper conveyor, the coal shearer cannot cut the triangle coal at both ends of the working face, and the pull back of the lower chain For the deficiencies of coal, etc., the present invention provides a scraper conveyor for thin coal seam fully mechanized mining, which can enable thin coal seam shearers to cut coal at both ends of the mining face without leaving triangular coal, and the down chain will not pull back coal

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