Pneumatic cleaning and drag reduction device for reciprocating coal cutting path of plow head

Abstract

The invention relates to the technical field of underground coal mine thin coal seam coal plough exploitation, in particular to a pneumatic cleaning and resistance reducing device for a coal plough head reciprocating coal cutting path. The device mainly comprises pneumatic cleaning brushes installed on the front side and the back side of the coal plough head coal cutting path, resistance reducing sliding wheels installed at the bottom of a coal plough head and a high-pressure gas delivery pipeline, wherein the pneumatic cleaning brushes and the coal plough head are connected through thread fastening devices. The pneumatic cleaning and resistance reducing device is characterized in that obstacles on the coal plough head reciprocating coal cutting path are blown and removed by adopting pneumatic cleaning brush bodies, and the coal plough head is borne by the resistance reducing sliding wheels, so that sliding friction of the coal plough head in the reciprocating coal cutting path is changed into rolling friction. According to the pneumatic cleaning and resistance reducing device, on one hand, accumulated coal and rock on the coal plough head reciprocating coal cutting path can be removed, and therefore the resistance of the obstacles on the coal cutting path is reduced; on the other hand, the convenient reciprocating sliding effect of the coal plough head can be achieved, the friction resistance of the coal plough head is reduced, abrasion of the coal plough head and a traction plough chain is reduced, the output working efficiency of a plough head driving motor is improved, and the normal service life of a coal plough is prolonged.

Description

technical field [0001] The invention relates to the technical field of coal plow mining for thin coal seams in underground coal mines, in particular to a plow plow head reciprocating coal cutting path pneumatic cleaning and drag reduction device. Background technique [0002] my country's thin coal seam has outstanding advantages such as abundant reserves, wide distribution and local concentration, and good coal quality. At the same time, with the development of the coal mining industry in recent years, the mining of thin coal seams has been put on the agenda, and mining has been implemented in many coal mining enterprises. thin coal seam. With the maturity of plow mining thin coal seam technology, the application in thin coal seam is also becoming more and more important. Through the use of coal plows in the mine, it is found that the existing coal plows have major disadvantages such as large frictional resistance between the plow head, the conveyor and the floor, and low m...

AI Technical Summary

Problems solved by technology

Through the use of coal plows in the mine, it is found that the existing coal plows have major disadvantages such as large frictional resistance between the plow head, the conveyor and the bottom plate, and low power utilization of the motor during the mining process.

Such as the invention patent (CN103321638 A) discloses a kind of coal plow that can effectively reduce the broken chain shutdown accident caused by the plow head stuck in the coal wall, as the invention patent (CN104265287A) discloses a kind of coal plow and The carriage structure does not effectively clean the accumulated gravel or coal on the plow head's reciprocating coal cutting path during the mining process

When the coal plow is working, the plow head is connected to the plow head driving device through the plow chain to realize the reciprocating coal cutting movement. The plow head is connected with the outside. Gravel or coal is accumulated on the path of reciprocating movement of the plow head, which causes the path of reciprocating movement of the plow head to be blocked, and the movement resistance of the plow head gradually increases, resulting in the obstruction of the reciprocating coal cutting movement of the plow head; on the other hand , there is sliding friction at the bottom of the plow head on the reciprocating coal cutting path, which is likely to cause serious wear and tear on the bottom of the plow head

Under the long-term influence of the resistance force generated by the accumulation and the friction force at the bottom of the plow head, the wear of the plow head will be increased, the movement of the plow head will be unstable, and the plow chain will be easily affected by the dynamic load. Fatigue damage and reduced efficiency of planer drive motors

Images