Automatic spraying maintenance system for box girder

The utility model discloses an automatic spraying maintenance system for a box girder, which relates to the field of prefabricated box girders and comprises a control mechanism, a water pump, a main pipeline, a first branch pipe, a second branch pipe, an electromagnetic valve and a telescopic nozzle. The control mechanism is electrically connected with the water pump and used for controlling a switch of the water pump. And the main pipeline is communicated with the water pump. And the first branch pipe is communicated with the main pipeline. And the first branch pipe is pre-buried in the pedestal and is used for spraying maintenance. And the second branch pipe is communicated with the main pipeline. And the second branch pipe is pre-buried in the pedestal and is used for steam curing. And the electromagnetic valve is arranged between the first branch pipe and the main pipeline. And the telescopic nozzle is communicated with the first branch pipe and the second branch pipe. The telescopic spray head has an idl