Concrete surface cylinder type spiral soil digging drill bit for processing long spiral empty hole section

The embodiment of the utility model provides a concrete surface barrel type spiral soil digging drill bit for processing a long spiral empty hole section. A spiral disc is arranged in the drill bit, anti-slip strips are arranged on the surface of the spiral disc, the spiral disc extends out of the bottom according to parameters, the upper end of the spiral disc is connected through a square tenon connector, a barrel body is made of a steel plate with the thickness of 1.5 cm, and a central drill rod penetrates through the center of the drill bit and extends out of the bottom in a conical mode. During construction of a long spiral pile, pouring is stopped when the top of the designed pile is + 50cm, a long spiral drilling tool is lifted out with soil, an empty hole (the section is supported by a steel casing driven in advance) with loose muck falling and missing is formed, a concrete surface barrel type spiral soil fishing drill bit is connected with other power equipment through an intermediate appliance, the