Down-the-hole drilling rig is an impact crusher and a drill bit that have penetrated into the bottom of the hole to crush the rock. Therefore, it is called a down-the-hole drilling rig. Widely used in metal mining, hydropower, transportation, building materials, harbors and defense projects.
1. According to different places of use, it can be divided into two types: downhole DTH and open-air DTH. Such as: underground downhole drilling rigs K7—80, KQJ—100, open-air downhole drilling rigs include KQ—100, KQ—150, KQ—200, and KQ—250.
2. According to different hole diameters, it is divided into light down-the-hole drilling rigs (bore diameter is 80 ~ 100mm, machine weight is hundreds of kilograms to 2-3 tons), medium-sized down-hole drilling rigs (bore diameter is 150mm, machine weight is 10 ~ 15 tons) Heavy-duty down-the-hole drilling rig (bore diameter 200mm, machine weight 25-35 tons), extra-heavy down-hole drilling rig (bore diameter 250mm, machine weight 40-45 tons).
① The impact energy loss does not increase with the lengthening of the drill rod, and deep holes with large diameter can be drilled;
② The working surface noise is greatly reduced;
③ The drilling speed is fast, the degree of mechanization is high, and the auxiliary operation time is small, which improves the operating rate of the rig;
④ Flexible and flexible;
⑤ High drilling quality;
⑥ Able to drill rocks with medium hardness or above (f≥8).
Due to different production batches and specific models, the above pictures are for reference only. For details, please contact our sales staff for specific verification.
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