Original title: Types and models of rock drills In infrastructure construction, mine excavation and other construction sites, there is a basic process-drilling. Before the Industrial Revolution, people used to cut a hole in the rock by hand with a chisel. Now, with the development of science and technology, we have rock drills, which greatly improve the efficiency of work. Rock drill is commonly used in daily mining,dth rock bit, rock splitting and other drilling tools. It drills holes in the rock stratum, and then puts explosives to blast the rock, so as to complete the mining of stone or other stone projects. I. Type and model of rock drill There are many different classifications of rock drills,fastest dth hammer, and different rock drills have different application scenarios, so I have made a summary of the classification of rock drills. Let's take a look. (1) According to the different operation modes, it can be divided into hand-held rock drill, air-leg rock drill and upward rock drill. ① Hand-held rock drill uses compressed air as power to drill holes, commonly known as pneumatic drill. The weight is light, generally below 25 25, rock drilling tools ,dth drill bits, and small diameter and relatively shallow holes can be drilled. But now it is seldom used in underground mines, because it needs to be operated by manpower, the impact energy is small, and the drilling speed is relatively slow. Handheld rock drills are mainly y3, y26 and other models. (2) The air-leg rock drill works against the rock drill by the air leg, which plays the role of support and propulsion, reduces the labor intensity of the operator, and has higher drilling efficiency than the hand-held rock drill, so it is widely used in mining operations. Expand the full text Air-leg rock drills are mainly yt23, yt24, yt25, yt28, ytp26 and other models. (3) The upward rock drill is also called telescopic upward rock drill. The air leg of this kind of rock drill is connected with the main machine on the same longitudinal axis. It is specially used for drilling upward holes, generally weighing about 40 to 40, and is mainly used for rock drilling operations in stope and raise. The common model of upward rock drill is YSP45. (2) According to the different power sources, it can be divided into internal combustion rock drill, hydraulic rock drill and pneumatic rock drill. (1) The internal combustion rock drill uses the principle of internal combustion engine to drive the piston to impact the steel drill through the explosive force of gasoline. It is mainly used in construction sites without power and gas sources. There are mainly two types of internal combustion rock drills: YN27C and YN27. (2) The hydraulic rock drill uses high-pressure oil as the power to drive the piston to impact the drill, with an independent rotary mechanism, the piston is controlled by the valve to reciprocate,mining drill bit, and the drilling speed is more than twice as high as that of the pneumatic rock drill. Hydraulic rock drill is commonly used yyt28 full hydraulic rock drill. ③ Pneumatic rock drill is an impact drilling machine powered by compressed air, which can be divided into hand-held rock drill, air-leg rock drill and telescopic upward rock drill according to the propulsion mode. Return to Sohu to see more Responsible Editor:. wt-dthtools.com