The
air leg rock drill is a tool used to directly mine stone. It drills and drills blastholes in the rock layer so that it can be put in to blast the rock to complete the mining of stone or other stonework. In addition, the air leg rock drill can also be used as a breaker to break hard layers such as concrete.
The
air leg rock drill works according to the principle of impact crushing. When working, the piston makes high-frequency reciprocating motion, constantly impacting the shank. Under the action of the impact force, the sharp wedge-shaped drill bit crushes the rock and chisels into a certain depth, forming a dent. After the piston retracts, the drill rotates through a certain angle, the piston moves forward, and when it hits the drill tail again, a new dent is formed. The fan-shaped rock block between the two dents is sheared by the horizontal force generated on the drill bit. The piston of the air-leg rock drill continuously impacts the drill tail, and continuously inputs compressed air or pressure water from the center hole of the drill to discharge the slag out of the hole, forming a circular hole with a certain depth.
When the air leg rock drill starts, high-pressure air is introduced into the air distribution "wind box" through the handle body, and a movable air distribution valve alternately guides the compressed air into the back cavity and the front cavity of the cylinder block, pushing the piston to move back and forth at high speed. The air is discharged through the muffler cover.
