Underground tunnel punching apparatus

Abstract

The invention discloses an underground tunnel punching apparatus comprising a handle assembly, an upper ratchet structure and a lower ratchet structure. The upper ratchet structure comprises an upper pawl and an upper ratchet. The lower ratchet structure comprises a lower pawl and a lower ratchet. The upper and lower ratchets are mounted according to a demand that the upper and lower ratchets rotate oppositely in a working state. An upper drill bit assembly and a lower drill bit assembly are respectively and movably connected to the upper ratchet and the lower ratchet. The upper drill bit assembly can only move in the vertical direction relative to the upper ratchet. The lower drill bit assembly can only move in the vertical direction relative to the lower ratchet. The upper drill bit assembly and the lower drill bit assembly are located on the same straight line. By employing the punching apparatus in a working cycle process, holes punched by upper and lower drill bits are located on the same straight line, so that errors caused by a condition that holes in the upper and lower parts are independently punched are avoided; the working angle range is small when the handle rotates, and the operation is convenient; the handle can be manually wrenched, and effective work can be obtained by wrenching in the positive and negative directions, so that stroke waste does not occur; and gas explosion does not occur, so that the punching apparatus is applicable to special occasions.

Description

technical field [0001] The invention belongs to the technical field of drilling devices, in particular to an underground tunnel drilling device. Background technique [0002] In clay rocks, bauxite clay rocks and other earthy coal seam mines or underground tunnels with low mechanical strength, a large number of positioning holes are required in the continuous laying and maintenance of narrow-gauge lines under the tunnels to facilitate the installation of support columns in the continuously excavated tunnels , the existing narrow-gauge line punching mainly depends on gas cutting or hydraulic punching machine. Due to the existence of fire sources when using gas cutting, a full-time tile inspector must go to the site to check the gas concentration in detail before gas cutting. Gas explosions are likely to occur if the gas exceeds the limit, so gas cutting is absolutely prohibited in high gas locations; the hydraulic punching machine weighs about 150kg , heavy weight, unchanged...

AI Technical Summary

Problems solved by technology

Due to the existence of fire sources when using gas cutting, a full-time tile inspector must go to the site to check the gas concentration in detail before gas cutting. Gas explosions are likely to occur if the gas exceeds the limit, so gas cutting is absolutely prohibited in high gas locations; the hydraulic punching machine weighs about 150kg , heavy weight, unchanged movement; large volume, limited by the physical space of underground tunnel construction, it is extremely inconvenient to use; a lot of manpower is wasted during work, and the labor intensity is high

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