Tapping device for fire-fighting construction

The utility model discloses a tapper for fire-fighting construction, and relates to the technical field of tappers. The device comprises a mounting frame, a sliding rod is fixedly connected to the inner wall of the mounting frame, a positioning box slides on the surface of the sliding rod, a positioning assembly is arranged on the surface of the positioning box, a limiting groove is formed in the top face of the mounting frame, the inner wall of the limiting groove is in sliding connection with the surface of the positioning assembly, and a grip is fixedly connected to the surface of the mounting frame. Scale marks are arranged on the top face of the mounting frame, a control motor is fixedly mounted on the bottom face of the positioning box, the output end of the control motor is fixedly connected with a rotating shaft, a trepanning drill bit is arranged at the bottom of the rotating shaft, and supporting assemblies are arranged on the left side face and the right side face of the mounting frame. In the usin