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Biographie Original Title: Bafanglutong Analysis: Classification of Down-the-hole Drill How to determine the classification of down-the-hole drill? There are several typical classification methods. What is the corresponding type of each classification method? And a down-the-hole drill What are the similarities and differences between the pneumatic down-the-hole drill, the hydraulic down-the-hole drill and the full hydraulic down-the- hole drill? Bafang Lutong Grouting Reinforcement Experts Tell You ： During rock drilling, the impactor dips into the hole, and the piston (hammer body) in the impactor reciprocates to strike the drill shank through the gas distribution device (valve), so that the drill bit impacts the rock at the bottom of the hole. The high-speed rotation of the impactor in the hole is realized by a separate rotating mechanism,dth drilling hammer, that is, by the electric motor or pneumatic rotating device outside the hole, through the drill rod connected to the rear end of the impactor. Pipe shed construction team Beijing Bafang Lutong has been focusing on pipe shed construction for 15 years,dth drill bits, providing pipe shed construction scheme, frozen pipe driving project, large pipe shed construction technology, tunnel pipe roof construction scheme, mining dth bit ,dth button bits, pipe curtain construction, pipe roof construction animation video, soil reinforcement, grouting reinforcement, foundation treatment, etc. Http://www.bj-bflt.com/ of pipe shed construction team The rock powder produced during rock drilling is flushed out of the hole by the mixed gas of wind and water. The mixed gas is injected into the impactor through the center of the drill rod by the powder discharge mechanism, and then enters the bottom of the hole through the gas groove on the impactor cylinder. Or fully pneumatic, the first two are drilling rigs with hydraulic oil pumps, not fully pneumatic, but also can be classified by use, this is more, such as blasting, anchoring, well drilling rigs, etc., the structure can be divided into all-in-one machine or split machine. The excavator is changed into a small cutting drill (special hydraulic drill for tunnel,Mining Drilling Equipment, geology, mining and other projects) Advantages: does not change the performance of the original machine. Return to Sohu , see more Responsible Editor:. wt-dthtools.com 
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