Coal mining square box crusher

Abstract

The invention relates to the technical field of coal mining equipment, and discloses a coal mining square box crusher which includes a square box body. A hinge seat is fixedly installed the left sidesurface of the square box body, an upper movable box body is fixedly installed at the other end of the hinge seat, a rotating shaft is movably installed on the front of the inner cavity of the squarebox body, a hammer disk fixedly sleeves the outer surface of the rotating shaft, the inner side surface of the hammer disk is movably connected with a hammer head, blades are fixedly installed on thefront of the hammer disk, and a fixed liner plate is fixedly installed on the right side surface of the inner cavity of the square box body. According to the coal mining square box crusher, by arranging a material placing partition on the inner side of a feeding opening and through a an electric telescopic rod arranged on the outside of the upper movable box body, the feeding speed of the crushercan be adjusted as required, so that the problem that the crusher is jammed due to large pieces of coal mixed into the inside of the crusher when an outside feeding device is used to control the feeding speed is solved.

Description

technical field [0001] The invention relates to the technical field of coal mine equipment, in particular to a square box crusher for coal mining. Background technique [0002] Box-type crushers are also called hammer crushers, square box crushers, and box-type crushers. The weight of a single hammer head is large, the rotor speed is high, and the moment of inertia of the hammer head is large, which fully reflects the advantages of large crushing and small crushing. And it has the unique ability to encroach on super large stones. The stones fall directly from the upper part of the machine into the high-speed rotating turntable. Under the action of high-speed centrifugal force, high-speed impact and high-density crushing are produced. After the stones hit each other, It will form a vortex motion between the turntable and the casing to cause multiple mutual impacts, frictions, and crushing until it is crushed into the required particle size. [0003] During the use of the cur...

AI Technical Summary

Problems solved by technology

[0003] During the use of the currently used square box crusher, the amount of coal mine feed is controlled by the external conveying equipment. When transporting some relatively large coal blocks into the box crusher, it is easy to get stuck. The problem is that the feeding speed cannot be controlled by itself, and the liner on the crusher is fixed, so there is no need to adjust the distance between the hammer head and the liner as needed, so that the size of the crushed particles cannot be adjusted. At the same time, the screen plate is in the crusher The internal position is fixed, which will easily cause the broken particles to fail to pass through the sieve plate quickly, resulting in blockage. At the same time, the inertia force provided by the outer flywheel of the crusher is constant, so that it cannot be hit by the hammer head. When beating the material on the liner, it provides additional greater impact force, so that the harder coal blocks cannot be crushed faster

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