Shandong China Coal Group Drilling Machine Branch

Rock drill is a kind of economic, simple, portable tunneling machinery tool, plays an important role in the work of stone mining, belongs to the impact equipment, its normal work needs water, oil, gas

The bladed heavy drill (hammer) is raised to a certain height by means of the frame and winch, and the free-falling impact force is used to cut the broken rock or hit the soil to form a hole.

The drill bit plays an important role in the drilling process of the water well drilling rig, the quality of a drill bit directly affects the drilling efficiency and hole quality of the well, so we ne

Air leg rock drill is one of the modern rock drill tools, it is easy to operate. The silencer attached to the gas leg drill can change the exhaust direction at will, reduce the noise and improve the w

Replace the throttle valve of rig fittings: 1. Replace the valve plate and seat: remove the pressure of the valve cavity, remove the cover bolt, and remove the valve plate and the above part of the va

1. Main reasons for lower drilling speed of air leg rock drill: The main reasons for the reduction of drilling speed are low pressure in the working environment, poor lubrication of the machine, insu