Dustproof shockproof bit shank sleeve of jackdrill

Abstract

The invention discloses a dustproof shockproof bit shank sleeve of a jackdrill. The dustproof shockproof bit shank sleeve comprises a body, and an inner cavity of the body is provided with a drill rod hole; spiral shock reduction grooves are reserved in the surface of the body; the inner cavity of the body is evenly provided with shock reduction holes in the peripheral direction, the upper side and the lower side of the drill rod hole are connected with dustproof sleeves through elastic fastening structures respectively, the inner sides of the dustproof sleeves are provided with dustproof rings, and the two sides of each dustproof ring are connected through an elastic curtain. The shock reduction grooves and the shock reduction holes are adopted for the bit shank sleeve, the impact force and the vibration force borne by the bit shank sleeve when the jackdrill works are reduced, and the situation that fatigue of the bit shank sleeve is caused, and therefore the replacing frequency of the bit shank sleeve is increased is avoided; the elastic fastening structures are adopted, the dustproof sleeves and the bit shank sleeve are made to be movably connected, the situation that the dustproof sleeves are not tightly sealed when a drill rod conducts reciprocating movement is avoided, meanwhile the dustproof sleeves conduct movement along with the drill rod, abrasion of the drill rod to the dustproof sleeves is avoided, and the service life of the dustproof sleeves is prolonged.

Description

Technical field [0001] The invention relates to the technical field of rock drills, in particular to a dust-proof and shockproof brace tail sleeve of a rock drill. Background technique [0002] Rock drill is a kind of working tool used for rock drilling. Its working principle is powered by compressed air, and the reciprocating movement of the piston is controlled by an active valve. During the stroke, the piston impacts the drill tool to smash the rock; when returning, the piston drives the drill tool Rotating at a certain angle, continuous impact and rotation make the drill tool drill a circular blast hole in the stone to achieve drilling. The drill tail sleeve is a vulnerable part of the rock drill. After the processing is completed, it is pressed into the rotating sleeve for use by the internal machine. When using the rock drill During drilling operations, the shank sleeve is matched with the shank of the drill rod, and the shank is subjected to great impact and vibration unde...

AI Technical Summary

Problems solved by technology

[0002] The rock drill is a working tool used for rock drilling. Its working principle is powered by compressed air, and the reciprocating motion of the piston is controlled by an active valve. During the stroke, the piston impacts the drilling tool to break the rock; during the return stroke, the piston drives the drilling tool. Rotate at a certain angle, continuous impact and rotation make the drilling tool chisel out a circular blast hole on the stone to realize drilling. The shank sleeve is a vulnerable part of the rock drilling machine. After processing, it is pressed into the rotating sleeve and installed in the machine. When performing drilling operations, the shank sleeve is matched with the shank of the drill rod, and the drill rod is subjected to a large impact and vibration force under the continuous impact and rotation of the piston, so the shank sleeve The service conditions are very harsh, it is easy to cause mechanical fatigue and lead to serious wear of the shank sleeve, reducing the service life of the shank sleeve, and the rock drill will generate a lot of dust when it is working, and the traditional shank sleeve does not have dustproof performance. As a result, dust can easily enter the inside of the shank during work, aggravating the wear of the shank, thereby greatly reducing the service life of the shank and the service life of the rock drill. For this reason, we propose a dust-proof and shock-proof Shank shank

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