crawler drilling rig and tap-four kinds. More the domestic jumbo to track and tire type. The rail line trolley car body generally gantry, Guchang said gantry jumbo. Its upper layer 2-3 working platform can install multiple (up to 21) rock drill; lower through loaded ballast machines, well drilling rig for sale transportation vehicles and other equipment. This trolley drilling, charging, support, measurement and other functions. It is developed to overcome the shortcomings of low jackhammer drilling efficiency and promote the use of the construction of the railway tunnel and hydraulic blast hole drills tunnel in order to adapt to the needs of the large cross-section tunnel. Boom installed on the body (for the installation of rock drill, usually 1 to 4 units) own Zaoyanjixie of equipment. The drill boom can be arbitrarily turn, may be the operation of the blast hole drill rigs drilling machine to the arbitrary position of the working surface and direction of drilling (holes). More accurate parameters of diamond eye (holes), high drilling efficiency, greatly improved the working environment. Mechanical and hydraulic trolley power, the latter is used more often, the high degree of automation, the entire program of drilling (hole) is controlled by the computer.  in the development process, at first, a ladder-type pneumatic rock drill jumbo, gradually replacwater well drilling trucked by hydraulic rock drill gantry jumbo. Tire type and crawler drill rig is mainly driven by the diesel engine, installed 2 to 6 high-speed drilling machine, the body small turning radius, flexible, high efficiency, general for mine drifting excavation, tunnel and hydraulic drill rigs for sale underground engineering can also be used excavation.
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