A scraper type coal mining machine

Abstract

The invention relates to the field of mining industries, and particularly relates to a scratch board-type coal mining machine. When the scratch board-type coal mining machine is adopted, workers basically do not need to enter a coal working face for operation, and the safety and the working efficiency of coal mining are improved. The scratch board-type coal mining machine comprises a scraper conveyer, annular conveying chains and coal scraping plates, wherein a conveying groove is formed in the scraper conveyer, one side surface of the conveying groove along the length direction is opened, and the top surface of the conveying groove is meshed; the annular conveying chains are arranged in the conveying groove along the length direction of the conveying groove, the coal scraping plates are uniformly arranged on the annular conveying chains at intervals, and the annular conveying chains are distributed in the conveying groove in an upper and lower manner; a group of coal scraping plates on which coal scraping teeth are arranged is respectively arranged on the upper-layer conveying chains and the lower-layer conveying chains and are coal scraping toothed plates, and a group of coal scraping toothed plates comprises two coal scraping toothed plates which are adjacently arranged in parallel; and the coal scraping toothed plates on the top surface and the coal scraping toothed plates on the bottom surface move in the opposite directions in the operation process of the annular chains.

Description

technical field [0001] The invention relates to the field of mining, in particular to a scraper type coal mining machine. Background technique [0002] Coal resources in southern my country are scarce, and most of them are extremely thin coal seams. The cost of transporting coal from the north to the south is relatively high. Most coal mines in coal-poor areas have a coal seam thickness of less than 0.5 meters, or even less than 0.3 meters. At the end of the 1950s, my country introduced the wire wire saw coal mining method, which is to use a wire wire saw to pull out a trench at the bottom of the coal seam. The working face does not need to be supported. As the trench deepens, the mine pressure increases, and the coal is fractured and falls off. , and then slips to the lower lane under the action of gravity to realize coal mining at the unmanned working face. [0003] The problem that exists is that the wire rope saw coal mining method utilizes mine pressure to break the coa...

AI Technical Summary

Problems solved by technology

[0003] The problem is that the wire saw coal mining method uses mining pressure to break the coal. When the coal falls unbalanced and collapses in large quantities, the gas gushes out rapidly and gas accidents are likely to occur.

And when the mine pressure is large, it is easy to jam and break the rope

Coal plow, coal transporting and coal breaking power systems are separated, the structure is more complex, the coal plow needs to run back and forth, high energy consumption, low efficiency, and not suitable for coal mining face in extremely thin coal seams below 0.5 meters

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