Cast-in-place box girder spraying maintenance device

The utility model discloses a cast-in-place box girder spraying maintenance device, and relates to the technical field of box girder maintenance. The device comprises a beam body and a transmission cover, a reciprocating screw is rotationally connected to one side in the transmission cover, a fixing frame is in threaded connection with the exterior of the reciprocating screw and located in the transmission cover, the top of the fixing frame extends to the exterior of the transmission cover and is fixedly connected with a supporting frame, and a water pipe is arranged in the supporting frame and extends to the interior of the fixing frame. The exterior of the water pipe extends to the exterior of the supporting frame and is fixedly connected with sprayers at equal intervals, and one side of the exterior of the transmission cover is fixedly connected with a motor. The support frame reciprocates back and forth, the water tank is driven by the support frame to move along with the support frame, all-directional sp