A rapid screw-off device for drilling tools suitable for rescue drilling of complex coal seams

Aiming at the problem of low drilling technology in rescuing trapped persons in coal mine accidents, the factors affecting fast drilling are analyzed. By rescue vehicle rig modular and intelligent technology, we developed a fast twist drill discharge device. The device can support the rapid passage of various diameters of drilling tools and realize the efficient centering, clamping and automatic unwinding functions that save the time of auxiliary operation. The specific mechanical structure of the modular platform was optimized, and the automatic leveling strategy of the wellhead platform was adopted to form a one-key automatic unscrewing device. The quick screw-off device can be quickly assembled with the main engine, which saves the rescue time and achieves the purpose of quick screw-off of drilling tools.