Drilling tool fixing device for top plate drilling

Abstract

The invention discloses a drilling tool fixing device for top plate drilling. The fixing device comprises a device outer sleeve and an orifice pipe; the device outer sleeve is welded at the upper endof the orifice pipe; self-tapping fastening bolts penetrate through and are in threaded connection with the two sides of the outer surface of the device outer sleeve; a fastening handle is fixedly connected with one end of one of the self-tapping fastening bolts; fixing slips are arranged at the opposite ends of the two self-tapping fastening bolts in a closely attached manner; supporting slidingrails are arranged at the two ends of each fixing slip in a penetrating manner; the middles of the outer surfaces of the supporting sliding rails are sleeved with return springs; the fixing slips canmove leftwards and rightwards on the supporting sliding rails; the supporting sliding rails penetrate through the device outer sleeve; the four supporting sliding rails are arranged symmetrically in pairs; the return springs are located between the two fixing slips; and the elastic coefficient of the return springs is 8 N / MM. According to the fixing device, a drilling tool in a hole can be fixed firmly, so that personal injuries caused by the fact that a drill pipe runs out and hurts persons are avoided.

Description

technical field [0001] The invention relates to the field of water prevention and control in coal mines, in particular to a roof drilling tool fixing device. Background technique [0002] In mine water prevention work and surrounding rock stress research, the purpose of draining water or installing devices is often achieved through construction drilling. Small-inclination drilling or floor holes are more convenient for construction, while large-inclination drilling or vertical holes on the roof need to be constructed. Application of specific drilling rigs for construction, often such drilling rigs are large in size, cannot adapt to narrow construction environments, and have certain limitations. Although the body of the small drilling rig is small, the structure of the drilling rig is simple. When the roof is drilled, as the length of the drill pipe increases, the weight of the drill pipe also increases. When the weight of the drill pipe is greater than the friction of the su...

AI Technical Summary

Problems solved by technology

[0002] In mine water prevention work and surrounding rock stress research, the purpose of draining water or installing devices is often achieved through construction drilling. Small-inclination drilling or floor holes are more convenient for construction, while large-inclination drilling or vertical holes on the roof need to be constructed. Application of specific drilling rigs for construction, often such drilling rigs are large in size and cannot adapt to narrow construction environments, so there are certain limitations

Although the body of the small drilling rig is small, the structure of the drilling rig is simple. When the roof is drilled, as the length of the drill pipe increases, the weight of the drill pipe also increases. When the weight of the drill pipe is greater than the friction of the surrounding rock, the drill The rod is easy to jump out and hurt people, causing personal injury

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