A thin coal seam shearer drum

Abstract

The invention discloses a drum of a thin coal seam shearer, which is composed of an end disc, a spiral blade, a drum hub, a pick and a gear seat, etc., and the diameter of the drum hub increases in a hyperbolic sine form from the bottom of the drum to the end disc. The angle between the section of the helical blade and the inner cylinder of the hub is non-right angle, the coal-facing surface of the helical blade is an arc surface, and the pick seat is fixed on the coal-facing surface of the helical blade by bolts, so that only the alloy head of the pick is exposed Outside the envelope of the helical blade. According to the movement and distribution rules of the coal body during the process of being shipped, the drum combines the main reasons for the wear and tear failure of the current drum, and combines the special hub contour line of the present invention, the arc-shaped skewed spiral blade and the detachable pick tooth seat, so that The coal loading rate of the drum is increased by more than 20%, and the life of the drum is increased by more than 6%. It is suitable for mining thin coal seams with a coal seam thickness of less than 1.3 meters and a strike angle of less than 20°. The drum has the advantages of compact structure, convenient use, good coal charging 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...

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

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