Preventing of repeatedly usable collapses dowelling jig and advances device

The utility model discloses a preventing of repeatedly usable collapses dowelling jig and advances device, the characteristic is including drill bit, spiral drill rod, an anger section of thick bamboo, card stopper, rotor and bolt, spiral drill rod body of rod part is the cylinder, and head and afterbody are cubic handle, and the welding has the spiral line on the body of rod, establishes the cylindrical thread hole in the handle of head four directions, and the aperture is the same with the drill bit afterbody diameter of bolt, an anger section of thick bamboo is the steel pipe, and the top welding has the alloy to bore the tooth, and it has the spirochaeta to bore the outside welding of a section of thick bamboo, the diameter of card stopper and rotor is the same with the internal diameter of an anger section of thick bamboo, and positive quadrangular shape hole is all offered to ka sai and rotor center, and the hole cross section length of side is the same with the afterbody four directions handle cross section length of side with the spiral drill rod head respectively, card stopper and rotor pass through the bolt to be fixed on spiral drill rod, the limbers has been seted up at drilling rod and drill bit center, the utility model is suitable for a punch in the broken soft rock body and creep into, can prevent the hole of collapsing of driling, repeatedly usable.