And prefabricating box girder spraying maintenance system

The utility model relates to a prefabricated box girder spraying maintenance system. The prefabricated box girder spraying maintenance system comprises a prefabricated box girder, box girder buttresses, a box girder bottom plate, a first water catchment groove plate, a second water catchment groove plate and a residual water collection box. A box girder buttress is arranged on the girder site foundation; the prefabricated box girder is arranged on the box girder buttresses, and the water spraying box in the cavity is arranged in the prefabricated box girder; the position of the water sprayingbox in the cavity in the prefabricated box girder is controlled through the position control rod, and the outer side wall of the box girder bottom plate is connected with the first water collecting groove plate; the sliding supporting column is connected with the transverse water spraying pipe and the oblique water spraying pipe, and the inclination angle of the oblique water spraying pipe is adjusted through the first po