Repairing device for tunnel cracks and holes

The utility model provides a repairing device for tunnel cracks and holes, and belongs to the technical field of tunnel maintenance. Comprising a base, a driving mechanism is fixedly connected to the upper end of the base, a cavity is formed in the base, the output end of the driving mechanism penetrates through the cavity and is fixedly connected with a main bevel gear, the lower side of the main bevel gear is in meshed connection with a sub bevel gear, a sub transmission shaft is inserted into the sub bevel gear, and a lead screw is fixedly connected to one end of the sub transmission shaft; a storage box is fixedly connected to the upper end of the base, an air cylinder is fixedly installed at the top end of the storage box, the output end of the air cylinder is fixedly connected with an extrusion plate located in the storage box, and a feeding pipe is arranged on one side of the storage box; the bottom of the storage box penetrates through the base to be fixedly connected with a discharging pipe, and a ba