In DTH drilling, the percussion mechanism – commonly called the hammer – is located directly above the drill bit. The drill pipes transmit the necessary feed force and rotation to the hammer and the bit, along with the fluid (air, water or drilling mud) used to actuate the hammer and flush the cuttings. The drill pipes are added to the drill string successively behind the hammer as the hole gets deeper.
[pdf] Full hydraulic core drilling rig is a highly efficient and versatile drilling machine, primarily designed for drilling solid mineral deposits while also being applicable to a variety of engineering and geological drilling projects.
[pdf] This model is a full-hydraulic gyrator-type anchoring engineering drilling rig, which is mainly suitable for engineering construction such as foundation pit support and control of building displacement, geological disaster management in urban areas.
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