Humidifier for bridge maintenance

The utility model discloses a humidifier for bridge maintenance, and belongs to the technical field of bridge maintenance equipment. The humidifier for bridge maintenance comprises a mounting frame, an external connection box is fixedly connected to the outer surface of one side of the mounting frame, two supporting rods are fixedly connected between the inner walls of the two sides of the external connection box, the two supporting rods are slidably sleeved with a connecting plate, and a transmission toothed bar is fixedly connected to the outer surface of one side of the connecting plate; according to the humidifier for bridge maintenance, a plurality of devices are installed on a bridge guardrail, when water is supplied to an atomization nozzle on each device, a reciprocating lead screw is rotated to drive a connecting plate to move back and forth, a transmission toothed bar drives a transmission gear to rotate back and forth, and the atomization nozzles on the devices are driven to rotate back and forth;