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Originally published as Secrets..? Teach you how to distinguish the drill. Name of drilling rig and trolley? In the following, the professional terms that are easy to be confused in the rock drilling machinery commonly use drilling principle The percussive principle is applicable to the drilling of medium-hard and above rocks. The equipment for drilling by percussive method includes pneumatic rock drill, hydraulic rock drill, down-the-hole drill, steel cable percussive drill,dth button bits, etc. Percussion drilling can be divided into two typhown in Figure 4. The drill is connected to the roller cone bit through the drill rod, and the drill rod is used to pressurize the bit into contact with the rock. At the same time, under the rotating action of the drill pipe, the cone with column teeth on the drill bit rolls, and through the column teeth in contact with the rock,dth drilling hammer, the vibration impact and press-in force are transmitted to break the rock. This kind of drilling tidown-the-hole hammer, rock drill and power head 4.1 Definition of down-the-hole impactor As the name implies, mining dth bit ,dth drill bits, the down-the-hole impactor is a tool that uses the principle of d o, -air top hammer drilling rig; (7) Tunnel and underground top hammer percussive drilling equipment should be called rock drilling jumbo; (8) Drilling equipment modified from automobiles should be called drilling rig; (9) If the traveling speed is very slow, such as less than 10KM/H,rock drilling tools, it should be called a drilling rig. Thank you for reading, remember to press the official account! Return to Sohu , see more Responsible Editor:. wt-dthtools.com