Double-side spraying and maintaining device and method for high-speed rail precast bridge

The invention discloses a double-side spraying and maintaining device for a high-speed rail precast bridge. The double-side spraying and maintaining device comprising a water tank, a water pump, a spraying pipe and a walking mechanism is characterized in that the water pump is connected with the water tank and the spraying pipe, the spraying pipe comprises a T-shaped top-surface spraying set and a bottom-surface spraying set, a T-shaped vertical pipe penetrates the gap between side wings of two neighboring beams, a T-shaped horizontal pipe is provided with nozzles, the top-surface spraying set is used for humidifying and cooling the top surface of the precast bridge while the bottom-surface spraying set is used for humidifying and cooling the bottom surface of the precast bridge, and each nozzle is composed of an inner shaft pipe, a rotary sleeve and a spout. The double-side spraying and maintaining device is simple in structure, reasonable in design, high in intelligent degree, convenient to use and operate,