Guide wheel lifting device of rail-road car

The utility model relates to the technical field of road-rail cars, in particular to a guide wheel lifting device of a road-rail car, which overcomes the defects that the guide wheel of the road-rail car is hydraulically controlled, so that a hydraulic system fails, the car cannot run, and the guide wheel is not provided with a limiting device, and comprises a car body, the bottom of the car body is movably connected with a hydraulic rod; a mounting frame is welded to the bottom of the vehicle body, supporting legs are movably connected to the inner side of the bottom of the mounting frame through pin shafts, guide wheels are movably mounted at the ends of the supporting legs, a contact plate is welded to one side of the mounting frame, electric telescopic rods are mounted on the two sides, adjacent to the contact plate, of the mounting frame, and connecting blocks are fixed to the telescopic ends of the electric telescopic rods. According to the guide wheel of the road-rail car, when the car runs on a rail,