An impact crushing device for coal mines

Abstract

The invention discloses an impact crushing device for coal mines, which relates to the technical field of coal mine crushing devices. It is convenient to adjust the relative distance and relative inclination between the blow bar and the impact plate of the impact device at the same time, so that the crushing device can be adjusted according to the actual use conditions. Adjust the distance between the blow bar and the blow bar to ensure that the coal ore discharged through the gap between the blow bar and the blow bar can meet the required particle size. In the present invention, the first shell is overlapped with the second shell, and the first shell and the second shell are buckled together to form a crushing cavity. A rotor is arranged in the crushing cavity, and a blow bar is set on the rotor. One end of the rotor is connected to the first The housings are rotatably connected, the other end of the rotor penetrates the outer wall of the first housing and is connected with a drive device, and the crushing chamber is also provided with an impact plate located outside the blow bar, and the impact plate is connected with an adjustment device that penetrates the outer wall of the second housing. The outer wall of the second housing is also provided with a supporting device.

Description

technical field [0001] The invention relates to the technical field of coal mine crushing devices, in particular to an impact crushing device for coal mines. Background technique [0002] It is an area where humans mine coal resources in coal-rich mining areas, generally divided into underground coal mines and open-pit coal mines. When the coal seam is far away from the surface, it is generally selected to excavate the coal by digging the roadway underground, which is an underground coal mine. 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. Regardless of underground coal mines and open-pit coal mines, they are often very large during mining, so large pieces of coal mines will be crushed for the convenience of transportation. As a commonly used crushing machine, the...

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Problems solved by technology

[0003] However, the distance between the blow bar and the impact plate of the existing impact crusher cannot be adjusted. After the impact crusher leaves the factory, the distance between the blow bar and the impact plate of the impact device is fixed. Hinged connection, the other end of the impact plate is adjusted through the adjustment device, which can only realize the change of the inclination angle between the impact plate and the blow bar, but cannot realize the adjustment of the relative distance and the degree of inclination at the same time; according to actual production experience, different sizes The crushing efficiency of coal mines is different when the distance between the blow bar and the impact plate is different. When the distance between the blow bar and the impact plate is too large, large coal mines will pass through before the particle size is broken enough to meet the requirements. The discharge port at the lower end discharges

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