Drilling and slotting integrated machine for coal mines

Abstract

The invention discloses a drilling and slotting integrated machine for coal mines. The machine comprises a machine body, a power mechanism and a hydraulic control system, wherein the power mechanism is arranged at the upper end of the machine body; the hydraulic control system is arranged near the front end of the machine body; traveling gears are arranged on two sides of the machine body; support devices are arranged at front and rear ends of the machine body; a telescopic boom is arranged at the front end of the machine body; the movement direction of the telescopic boom is controlled through hydraulic parts; a drilling and water jet slotting device is fixed at the front end of the telescopic boom. According to the invention, different from a conventional device of performing slotting operation after the drilling is completed, the machine disclosed by the invention can switch the movement of the inserted drilling and water jet slotting device into high-pressure abrasive jet slotting movement in the drilling process of the drilling and water jet slotting device on request, so that the purpose of drilling while slotting is achieved, the problem that water jet slotting knife of the drilling and water jet slotting device cannot extend to a hole and perform slotting, caused by phenomena, such as hole collapse, can be effectively solved and the working efficiency is remarkably increased in the meantime.

Description

technical field [0001] The invention relates to the field of coal mining machinery manufacturing, in particular to a coal mine drilling and cutting integrated machine. Background technique [0002] Coal and gas outburst is one of the serious natural disasters in the process of coal mining. It is an extremely complicated dynamic force of the coal and rock mass around the mining face being rapidly broken, accompanied by coal and rock being thrown or moved to the roadway, and a large amount of gas gushing out. Phenomenon, it will cause casualties and damage to mechanical and electrical equipment in shafts, damage to mine ventilation systems, and even cause gas explosions and fire accidents. Coal and gas outburst has become one of the major research topics in the field of mine safety because of its complex causes, numerous influencing factors, suddenness and destructiveness. [0003] In recent years, with the increase of mining depth, some low-gas mines or high-gas mines have g...

AI Technical Summary

Problems solved by technology

[0007] The current method is to use high-pressure abrasive jet to cut seams in the coal seam, increase the exposed area of ​​coal and the air permeability coefficient of the protruding coal seam, reduce the gas pressure, and promote the redistribution of ground stress. However, in practical applications, the high-pressure water jet cutting technology Generally, the hole needs to be drilled by the drilling rig first, and then the high-pressure water jet equipment is used to cut the seam. During the process, the drilling tool and the seam cutting equipment need to be moved many times, and the hole may be damaged and cannot be cut when the seam is cut after drilling.

The above problems caused the construction auxiliary time to be too long, the progress was slow, and the efficiency was low, which became an important factor affecting the excavation speed.

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