Automatic spraying maintenance system for box girder prefabricating field

The utility model belongs to the technical field of box girder maintenance, particularly relates to an automatic spraying maintenance system for a box girder prefabricating field, and aims to solve the problems that the interior of a box girder is not maintained and the spraying is not uniform in the prior art, the automatic spraying maintenance system for the box girder prefabricating field comprises a water storage cylinder, a spraying mechanism is arranged on one side of the water storage cylinder, and the spraying mechanism is arranged on the other side of the water storage cylinder. The spraying mechanism comprises a water tank arranged on one side of the water storage cylinder, an arc-shaped pipe connected to the outer wall of one side of the water tank and a first spraying head installed on the outer wall of the arc-shaped pipe. The first spray head can maintain the inner wall of the box girder main body, the second spray head and the third spray head can maintain the outer wall of the box girder main