Working principle of pneumatic anchor drilling rig

The working principle of a pneumatic anchor drilling rig relies primarily on its unique structure and design. Driven by high-pressure gas, the rig generates powerful force, which in turn drives the drill rod to rotate and advance. This efficient working method makes pneumatic anchor drilling rigs perform exceptionally well in drilling operations on hard materials such as rock and concrete, significantly improving drilling efficiency and quality.

The pneumatic anchor drilling rig uses compressed air as its power source. Through precise control of the motor valve and air valve, the motor rotation and outrigger raising and lowering are achieved. When the motor valve is open, compressed air drives the motor gear to rotate. After two stages of reduction, the main shaft rotates accordingly, thereby driving the drill bit to work. Simultaneously, opening the air valve allows compressed air to quickly enter the outrigger cylinders, pushing them to extend and perform drilling operations. By adjusting the air intake of the air valve, i.e., changing the rotation angle of the control wrench or knob, the spindle speed and outrigger extension speed can be flexibly adjusted to meet different drilling requirements. In addition, after the water valve is opened, the flushing water passes through the tee, fixed sleeve, water jacket, and drill pipe, entering the drill bit to flush away rock cuttings and cool the drill bit. The flow rate of the flushing water can also be easily controlled by adjusting the angle of the control knob.