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Anchoring and anti-blocking drill rod for coal mine floor
Anchoring and anti-blocking drill rod for coal mine floor
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机译:煤矿底板的锚固防堵钻杆
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摘要
An anchoring and anti-blocking drill rod for a coal mine floor comprises a hollow drill rod (1), a hollow sleeve (2), threaded connectors disposed at ends of the hollow drill rod, a prismatic wrench clamping groove (3) disposed in the outer surface of the hollow drill rod and located between a front end threaded connector (5) and a tail end threaded connector (6), a spiral connecting line (4) disposed between the hollow sleeve and the hollow drill rod, and a water-proof insertion groove (7) disposed in a tail end of the hollow sleeve. The device can drill the coal mine floor, and can simultaneously perform drilling, cleaning and dirt discharging. The device has a simple structure and good adaptation, is easy to operate, provides a good anti-blocking effect, and has wide practicability.
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