Coal rock presplitting unloading device and control method thereof

Abstract

The invention belongs to the technical field of coal rock breaking mining and provides a coal rock presplitting unloading device and a control method thereof. The coal rock presplitting unloading device comprises a hydraulic control system arranged in a coal cutter roller and a plurality of hydraulic impacting picks arranged on the circumference of the roller. All picks on the coal cutter roller are the hydraulic impacting picks which are controlled by the hydraulic control system to achieve impact or retracting, the hydraulic impacting picks on the whole roller are made to sequentially and alternately impact coal rock, the hydraulic impacting picks can quickly make impact holes of certain depths in a pre-contact area before cutting of the surface of a coal seam, and thus a local unloading area is formed and the purpose of overall coal rock unloading is achieved. A rock layer is broken through sequential and alternate movement of the hydraulic impacting picks, and thus the picks can be effectively protected and high-efficiency coal rock cutting can be achieved.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a coal rock pre-splitting and unloading device and a control method thereof. Background technique [0002] At present, when underground coal mines are mined, due to the presence of high-hardness coal or rock formations in some coal seams, the picks of the shearer directly collide with the hard coal seam when rotating at high speed, resulting in severe wear and even fracture and shedding of the picks. During continuous work, workers often need to stop to check and replace damaged picks, which greatly hinders the progress of the project, seriously affects the construction efficiency, and increases the construction cost in the coal mining process. Therefore, it is necessary to design a better coal mining device to solve the above problems. Contents of the invention [0003] Aiming at the problems existing in the prior art, the present invention provides a coal rock pre-splitt...

AI Technical Summary

Problems solved by technology

[0002] At present, when underground coal mines are mined, due to the presence of high-hardness coal or rock formations in some coal seams, the picks of the shearer directly collide with the hard coal seam when rotating at high speed, resulting in serious wear and tear of the picks, even fractures, shedding, etc.

In the process of continuous work, workers often need to stop to check and replace damaged picks, which greatly hinders the progress of the project, seriously affects the construction efficiency, and increases the construction cost in the coal mining process

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