Hole drill hole drill is the impact of rotary drilling rig, its internal structure and general drills different, Shandong pipe roof drilling rig, its gas distribution and piston reciprocating mechanism is independent, that the impactor, its front end directly coupled to the drill bit, drill the backend connection pole. When drilling impactor latent manhole, through valve means (valve), so (the hammer) the impact of the reciprocating piston inside against the solder tail, making rock drill an impact on the bottom of the hole. The impact of high-speed rotation in the hole, it is by individual Rotary, Tai'an pipe roof drilling machines, that is, from the outside of the hole or pneumatic rotary motor means connected to the impact by the rear end of the drill pipe to achieve. Rock dust generated during drilling, pipe roof drilling rig, a mixture of Feng Shui gas flushed out of the hole, the mixed gas is injected from the discharge pink organizations impactor drill through the center, and then the gas tank on the impactor cylinder into the hole bottom . Development of well drilling rig early in the second century BC, the Chinese have been using manpower and with the bamboo bow stretch the cone Drill formations and drilling rigs original impact, pipe roof drilling rig model, then the long-term use in rural China. To the 1950s, we introduced from abroad rope hammer drill, in the early 1960s began to develop large pot cones, red cones and other simple drilling rig caught. 1966 years ago began to develop positive cycle rotary drilling rig, after 1974 years ago, the successful development of reverse circulation rotary drilling rigs and complex rig, in the late 1970s created a DTH vibration rotary rig. Europe and the United States in the 19th century, the main use of rope hammer drill, in the 1860s, the French-first-use dial rotary drilling rig, later spread to America and rapid development. In the 1950s, it began to develop reverse circulation rotary turntable rig, and later appeared with compressed air instead of mud wash well as media rotary turntable rig, to 70 years the development of hydraulic power head rotary drilling rig. Pipe roof drilling rig manufacturers, dragon industry machinery (certified), pipe roof drilling rig by Dragon Machinery Co., Ltd. Shandong. Machinery Co., Ltd. Shandong Long (www.longyejixie.com) is Tai'an, engineering machinery parts leaders, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Lung industry machinery leadership with the staff warmly welcome all inquiries negotiations to create the dragon industry machinery better future.