Now for the environmental protection requirements are also increasing, but economic development can not do without ground construction. Many do not allow large excavation. Trenchless techniques such as pipe jacking, impact drill, shield, drilling and blasting has its limitations. Directional drilling except pebbles and hard rock is not outside the horizontal directional drilling rig, the other can, the prospects not conceivable. So now Dongguan Shenlong Machinery R & D: horizontal directional drilling, trenchless horizontal directional drilling popular. Dragon machinery use trenchless horizontal directional drilling implement the advantages of trenchless trenchless works - do not block traffic, does not destroy roads and vegetation, and thus avoided brought Excavation of living and traffic interference, as well as building the foundation of the damaging effects of the environment, pollution-free ordering horizontal directional drilling, no noise. DPCA is located in Dongcheng District, Dongguan City, Guangdong Province, China horizontal directional drilling brick industrial zone models, new and old customers to come to our study guide! CAUSE trenchless drilling rig may be faulty trenchless drilling rig may crash in the drill lifting or lowering, loaders, such as the operating handle back in place and the drill can not be stopped in its There may be three reasons: First, brake lag; the second is export motor ends two hydraulic lock failure, motor torque in the rope action can not stop turning; third reason is easily overlooked, that all rigs are There is a drill release feature, which is provided by a solenoid valve releases the brake signal Y3 oil, then by a solenoid valve Y2 through two pipe connected to the main hoist motor, the oil port of horizontal directional drilling, in order to ensure drill drilling process can always contact with the working surface and there is a certain pressure. In other conditions, the solenoid valve Y2 will provide access to the motor, the oil pipeline off the mouth of the two, if not promptly disconnected, the above symptoms will appear. Buy trenchless drilling rig Which is better? Dongguan Dragon machinery to provide you with non-excavation machinery, Dragon professional telecommunications industry, power industry, sewage works, municipal engineering. Dongguan Dragon Trenchless pipe rigs, models from 10T-100T, please call us! Ordering horizontal directional drilling, horizontal directional drilling Ningbo, specializing in horizontal directional drilling - Dragon by Dragon Machinery Co., Ltd., Dongguan City. Dragon Machinery Co., Ltd. of Dongguan City (www.dgshenlong.com) strong, credible, in Dongguan, Guangdong piling machinery industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead dragon rig into the brilliant and you work for a better future!