Circulating automatic spraying maintenance system in bridge prefabrication field

The utility model relates to a circulating automatic spraying maintenance system in a bridge prefabrication field. The circulating automatic spraying maintenance system is characterized in that galvanized water pipes are arranged in bridge prefabrication bed boxes and are communicated with an external circulating pond, a booster pump, a water pressure gauge, a water pressure regulating valve and a water outlet valve are sequentially arranged on a main pipe of the galvanized water pipes and are positioned between the circulating pond and the bridge prefabrication bed boxes, and a steam boiler is connected to a portion, which is arranged between the water outlet valve and the bridge prefabrication bed boxes, of the main pipe of the galvanized water pipes by a steam valve; water collecting grooves are respectively formed in two sides of each bridge prefabrication bed box, a rainwater pond is arranged at an end of each water collecting groove, the rainwater ponds are communicated with a settling pond by rainwater