Automatic spraying maintenance device for prefabricated box girder

The utility model belongs to the technical field of prefabricated box girder maintenance construction, and particularly relates to an automatic spraying maintenance device for a prefabricated box girder, which comprises a base, a lifting platform, a protective top plate, a water suction pump, a spraying rod and a water storage tank, the rack is mounted on the base, the supporting seat is mounted at the top of the rack, the electric telescopic rods are mounted at two ends of the supporting seat, the lifting platform is mounted at the top ends of the electric telescopic rods, the spraying rod is mounted at the bottom of the lifting platform, the water storage tank is mounted in the rack, and the settling tank is connected to the bottom of the water storage tank in the base. The electric telescopic rod is used for adjusting the spraying rod to be located around the prefabricated box girder; the spraying maintenance effect can be improved, and the spraying comprehensiveness is guaranteed; water pumped by the wate