Pneumatic Rock Drill with gas leg|used in various tunnel|diameter of borhole 38-80MM
Pneumatic rock drill is a gas leg instead of human withstand rock drilling machine work, thus greatly reducing the labor intensity, air leg drilling machine is mainly used for horizontal drilling or horizontal up and down 45 degrees, because the air leg rock drill only one Handle, it is not suitable for drilling down the hole, after all, a portable one machine too. Pillar rail-type rock drilling machine walking on the track, drill a certain range of restrictions. The drill rigs are available in tracked, tandem and track versions, each with a specially designed site that houses one to several hand held rock drill at the same time from different directions and angles, mostly in mining tunnels and Inside the tunnel.
Working principle and Control valve mechanism:
Parameters of pneumatic rock drill:
Starting the rock drill
Open the main valve for compressed air.
Open the cock for the flushing water.
Adjust the feed control lever to give a suitable feed force for collaring the hole.
Align the rock drill so that the working tool touches the desired collaring point.
Move the throttle lever forward a little, which will start water flushing, percussion and rotation.
Collar the hole with reduced feed force.
Move the throttle lever fully forward once the working tool has gained a secure footing in the rock.
Adjust the feed force by means of the control lever so that the maximum penetration rate is obtained.
Note! Do not bend the working tool as this will increase wear of the shank bushing
and piston. Furthermore, it can also affect drilling efficiency and increase the
risk of working tool breakage