Long pipe shed self-drilling drill bit suitable for fully weathered slate

The utility model provides a long pipe shed self-drilling bit suitable for fully weathered slate, which comprises a pipe shed hole sealing plate, water holes and drilling teeth, and is characterized by further comprising a drilling tooth plate and a hole sealing plate, the drilling tooth plate is obliquely arranged at the drilling end of the pipe shed, and the drilling tooth plate protrudes out of the hole sealing plate and extends in the drilling direction of the pipe shed; the drilling teeth are arranged at the working end of the drilling tooth plate; the hole sealing plate is arranged at a pipe shed opening of the drilling end of the pipe shed and matched with the drilling tooth plate to seal the drilling end of the pipe shed. And the water hole is formed in the hole sealing steel plate. The device is simple in structure and low in manufacturing cost, can be suitable for pipe shed construction of soft and hard fully-weathered slate, and provides quality and progress guarantee for pipe shed construction. 本实