Caliper disc brake with spraying cooling structure

The utility model belongs to the technical field of caliper disc brakes, and particularly relates to a caliper disc brake with a spray cooling structure, which comprises a mounting frame, a fixing plate is fixed on one side of the mounting frame, a cooling component is arranged on the fixing plate, a lead screw is fixed on the mounting frame through a bearing, a sliding plate is slidably mounted on the lead screw, and a cooling component is arranged on the cooling component. A connecting column is fixed to one side of the bottom end of the sliding plate, a brake clamping piece is installed at the other end of the connecting column, a brake piece is embedded in the brake clamping piece, a circular groove is formed in the brake clamping piece, and a trigger assembly is arranged in the circular groove. Through the structural design of the cooling assembly and the trigger assembly, when the temperature of the brake pad and the brake clamping piece is too high, the trigger assembly starts the water pump through si