Road and bridge crack repairing and fixing device

The utility model discloses a road and bridge crack repair fixing device which comprises a crack, a fixing rod, a supporting stud, a rotating shaft, a screw block, a supporting plate, a bearing plate, a steel wire mesh, a fixing block, a connecting block, a connecting rod and a supporting block, the supporting stud is arranged in the crack, and the screw block is arranged at the end, away from the crack, of the supporting stud. The screw block is in threaded connection with the supporting stud, the supporting plate is arranged on the outer side of the screw block, the bearing plate is arranged on the screw block, the end, away from a crack, of the supporting stud penetrates through the bearing plate and is arranged above the bearing plate, the steel wire mesh is arranged on the bottom wall of the bearing plate and attached to the inner wall of the crack, and the rotating shaft is arranged on the side, close to the steel wire mesh, of the supporting stud. And the supporting block is rotationally arranged on th