Coal mine coal crusher

Abstract

The invention discloses a coal mine coal crusher. The coal mine coal crusher comprises a primary crushing bin and a secondary crushing bin. The upper surface of the primary crushing bin is provided with a coal inlet. Fixing grooves are fixedly connected to upper portion of an inner cavity of the primary crushing bin. An outer cover is welded to the lower portion of the front surface of the primarycrushing bin. The left side inside the primary crushing bin is provided with a clamping plate A, the lower portion of the clamping plate A is provided with a guide rail, the upper portion of the clamping plate A is slidably connected inside the fixing groove, and the right side inside the primary crushing bin is provided with a clamping plate B. According to the coal mine coal crusher, multi-stage crushing treatment is adopted, coal passes through the primary crushing bin, a motor C drives a gear A to pass through guide rails on the lower portions of the clamping plate A and clamping plate Bto pull the clamping plate A and the clamping plate B to move towards each other, and large pieces of coal are crushed into small pieces under the action of crushing needles, so that later-stage crushing treatment is facilitated, the crushing effect is greatly improved, and the crushing efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of coal crushing equipment, in particular to a coal mine coal crusher. Background technique [0002] A coal mine is a reasonable space excavated by human beings when excavating geological layers rich in coal, usually including roadways, shafts and mining faces and so on. Coal is the main solid fuel and a kind of combustible organic rock. When the distance between the coal seam and the surface is very short, it is generally chosen to directly strip the surface soil layer to excavate coal, which is an open-pit coal mine. The vast majority of coal mines in my country are underground coal mines. Coal mines include large areas above and below ground and associated facilities. [0003] The existing crusher encounters the problem of poor crushing effect when encountering a coal block with a slightly larger volume and higher hardness. The traditional crusher has only one crushing mechanism, so once the amount of ...

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Problems solved by technology

[0003] The existing crusher encounters the problem of poor crushing effect when encountering a coal block with a slightly larger volume and higher hardness. The traditional crusher has only one crushing mechanism, so once the amount of coal increases, it is very easy to break unevenly. The problem is that the opening of the crushing chamber of the crusher on the market is generally open, which causes the coal debris to fly randomly during the crushing process and cause waste. The coal particles crushed by the existing crusher often have problems of different sizes.

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