Working Principle Of Pneumatic Anchor Drilling Rig

The working principle of pneumatic anchor drill mainly includes the following aspects: 

1. Basic working principle: Pneumatic anchor drill drives the air motor to rotate through compressed air to achieve drilling. The air leg plays a supporting and propulsive role to ensure the stability of the drill during the drilling process.

2. The mechanism of action of the anchor rod: The anchor rod stabilizes the rock layer by increasing the friction between the rock layers. Especially in the absence of stable rock layers, the clamping force of the anchor rod can prevent the rock layer from sliding. In addition, the anchor rod can also form a compressive stress area through the principle of combined arches to improve the bearing capacity of the surrounding rock.

3. Application scenario: Pneumatic anchor drill is widely used in tunnels with rock hardness ≤f8, especially for anchor support operations in coal tunnels. It can not only drill roof anchor holes and anchor cable holes, but also stir and install resin drug roll anchor rods and anchor cables to meet the requirements of initial anchor preload.

‌4. Operation steps‌: When using a pneumatic anchor drill, first add an appropriate amount of lubricating oil to the oiler and check whether the air pressure and water pressure are normal. During operation, adjust the air leg and the rotating control valve through the control arm and valve group to ensure that the drilling rig runs stably during the drilling process.