Refer to the construction method of the rotary drilling rig for rock exploration, and refer to the rotary drilling tool for rock tube extraction, and integrate the functions of it and the down-the-hole hammer into a core hammer. The interior is a hollow cylinder with small-diameter hammers inlaid on the wall of the cylinder (or Small diameter monomer DTH hammer assembly). It has multiple functions such as coring and reaming.
Cluster ring type DTH hammer
Annular cluster type down-the-hole hammer, the cylinder body of the down-the-hole hammer is provided with a cylindrical cavity, and the cylinder body is evenly distributed with multiple small-diameter down-the-hole hammer assemblies. By using the impact crushing principle of the impact hammer, the rock formation is crushed. It can improve operation efficiency and low energy consumption. It can realize the rock formation of large-diameter pile holes. The overall work is not polluted. The high-pressure exhaust gas discharged by the impact hammer is directly used for slag discharge. The hammer body has small vibration and does not damage the drilling equipment and hole walls. , The hole quality is high.
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