Vibration isolation coal cutter

Abstract

The invention relates to a vibration isolation coal cutter, which comprises a cutting mechanism and a body, wherein a buffer mechanism is arranged between the cutting mechanism and the body; the body comprises a traction box; the traction box is provided with a guide piece; the buffer mechanism is provided with a guide sleeve matched with the guide piece; and a buffer is arranged between the guide piece and the guide sleeve. According to the vibration isolation coal cutter, the impact vibration generated by a cutting part can be isolated, the impact on a traction part and the body is reduced, each connecting and fixing piece is prevented from loosening, the fatigue damage of each connecting piece is avoided, the failure rate of the coal cutter is reduced, and the working efficiency of the coal cutter is improved.

Description

technical field [0001] The invention belongs to the field of mining, and in particular relates to a vibration-isolation shearer. Background technique [0002] At present, the shearer can be divided into two forms according to the working principle, one is the drum shearer, and the other is the impact shearer. The drum circumference of the drum shearer is provided with picks, and the drum rotates to drive the picks to cut the coal wall to realize coal mining; the impact shearer relies on the shovel impacting the coal falling part to reciprocate the coal wall to achieve the coal mining. coal. [0003] From the working principle and process of the shearer, it can be known that the impact shearer impacts the coal falling part in the working process and impacts the rocker arm and the fuselage while impacting the coal wall, causing the connecting parts of the shearer to be damaged. The loosening of the connecting pin and the fatigue damage of the connecting pin will increase the...

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Problems solved by technology

[0003] From the working principle and process of the shearer, it can be known that the impact shearer impacts the coal falling part in the working process and impacts the rocker arm and the fuselage while impacting the coal wall, causing the connecting parts of the shearer to be damaged. The looseness of the connecting pin and the fatigue damage of the connecting pin will increase the failure rate, cause impact on the traction part, damage the driving and walking gears, and even cause damage to the traction motor and motor, and fracture of the rack.

[0004] Although the drum shearer is a circular motion of the drum, the picks mill the coal wall, but due to the distance between the picks, the picks will also produce certain shocks and vibrations when they touch the coal seam, especially when the coal seam is hard. Shock vibration is especially obvious. These shock vibrations will also cause great harm to the shearer, increase the failure rate of the shearer, shorten the service life of the shearer, and reduce the working efficiency of the shearer.

[0005] In order to solve the problem of impact vibration, various methods of adding buffer parts have appeared. However, due to the special technological limitations of the coal mining machine, the buffer method that only adds buffer parts without restricting the buffering direction will easily cause twisting and shearing of the fuselage. It even caused twisting and shearing on the track, causing many mining failures and damage to the fuselage, reducing production efficiency

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