Thin coal seam coal mining machine drum

A technology for shearer drums and thin coal seams, which is applied to cutting machinery, earthwork drilling, etc., can solve problems such as irreparable and poor coal loading performance of thin coal seam drums, so as to improve service life, increase coal loading rate, and ensure The effect of stability

Active Publication Date: 2015-12-09
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of thin coal seam drum has poor coal loading performance and cannot be repaired underground after the tooth seat is worn, so it is not suitable for coal mining in thin coal seams

Method used

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  • Thin coal seam coal mining machine drum
  • Thin coal seam coal mining machine drum
  • Thin coal seam coal mining machine drum

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention will be further explained below in conjunction with the accompanying drawings.

[0019] Such as figure 2 As shown, a thin coal seam shearer drum includes an end plate 7, a drum hub 1, a helical blade 4, a tooth holder 5, and a tooth 6. The drum has a compact structure and is suitable for any thin coal seam drum shearer in terms of installation and use.

[0020] The diameter of the drum hub 1 increases in a hyperbolic sine form from the bottom of the drum to the end plate 7, so that the outer contour line 11 of the drum hub meets the space requirements of the coal flow in the drum during the drum coal transportation process, and the diameter of the drum hub 1 is from the bottom of the drum to the end. The increase in the direction of disc 7 in the form of hyperbolic sine is the best test effect, and other forms of diameter increase are not as good as hyperbolic sine in improving the coal charging performance of the drum. Such as image 3 The pos...

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Abstract

The invention discloses a thin coal seam coal mining machine drum composed of an end plate, a spiral blade, a drum hub, cutting teeth, tooth holders and the like; the diameter of the drum hub is increased from the drum bottom to the end plate in a hyperbolic sine mode, an included angle of the section of the spiral blade with an inner cylindrical surface of the drum hub is not a right angle, a coal facing face of the spiral blade is cambered in shape, the tooth holder of each cutting tooth is mounted on the coal facing face of the spiral blade by a bolt fixing manner, and only an alloy head part of each cutting tooth exposes outside the spiral blade enveloping scope. According to the drum, according to motion and distribution rules of coal bodies in the loading and transportation process, main reasons of wear failure of the current drum are combined, and a special drum hub contour line, the cambered surface deflection spiral blade and the detachable cutting teeth and tooth holders are combined, so that the drum coal loading rate is increased by more than or equal to 20%, the drum life is increased by more than or equal to 6%, and the drum is suitable for mining of thin coal seams with the coal seam thickness of less than 1.3 m and the strike pitch of less than 20 DEG. The drum has the advantages of compact structure, convenient use, good coal loading effect and long service life.

Description

technical field [0001] The invention relates to a thin coal seam shearer drum, which belongs to the technical field of underground mining equipment and is suitable for thin coal seam mining of 0-1.3m. Background technique [0002] my country's thin coal seams are widely distributed and have large reserves, and the proven reserves account for as much as 20% of the total coal reserves. With the consumption of coal resources in my country and the reduction of medium-thick coal seams, the mining of thin coal seams has caused major domestic mining groups. highly valued. The thickness of the thin coal seam in my country is small, and the diameter of the shearer drum that can be used is small. If the previous shearer drum style is used, the blade depth is greatly limited, the coal storage space in the drum is small, and the coal loading rate of the drum is far away. It is far lower than the drum of the medium-thick coal seam shearer, and the unloaded coal becomes floating coal in th...

Claims

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Application Information

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IPC IPC(8): E21C25/10
Inventor 高魁东李建楠孙利青刘冰岳宗兴刘站
Owner SHANDONG UNIV OF SCI & TECH
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