Coal mining drilling machine with drill bit convenient to replace

Abstract

The invention belongs to the field of drilling machines, in particular to a coal mining drilling machine with a drill bit convenient to replace and aims at the problems that the existing drilling machines are mainly linear, the mining angle is inconvenient to adjust, the existing drilling machines are inconvenient to replace drill bits, the replacement speed is low. The coal mining drilling machine comprises a drilling machine base and a motor base arranged at the top of the drilling machine base, a flexible shaft is movably sleeved with a flexible shaft sleeve, one end of the flexible shaft sleeve is fixed on the side wall of a supporting board, a fixing sleeve is fixed to the other end of the flexible shaft sleeve, the right end of the flexible shaft extends into the fixing sleeve and isfixedly provided with a connecting shaft, the other end of the connecting shaft extends out of the fixing sleeve and is fixedly provided with a connecting base, an installing shaft is clamped to theright end of the connecting base, a drill bit base is fixed to the other end of the installing shaft, and a drill bit is installed on the drill bit base. Through ingenious addition of the flexible shaft, the drill bit part can be separated from the driving motor part, and therefore the angle of the drill bit can be conveniently adjusted without affecting operation of a driving motor.

Description

technical field [0001] The invention relates to the technical field of drilling rigs, in particular to a drilling rig for coal mine development which is convenient for drill bits to be replaced. 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. Coal mines include large areas above and below ground and associated facilities. A coal mine is a reasonable space excavated by humans when excavating geological layers rich in coal, usually ...

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a drilling rig for coal mining that is easy to replace drill bits, which solves the problem that the existing drilling rigs are all linear, and it is inconvenient to adjust the mining angle, and the existing drilling rigs are also inconvenient to replace the drill bits, and the replacement speed is slow.

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