Bridge maintenance suspension ladder

The utility model provides a bridge maintenance hanging ladder which comprises a supporting frame, a first hanging ladder body, a second hanging ladder body, a workbench, a fixing plate, a weight box, a pulley and a cable arrangement adjusting mechanism, the surface of the supporting frame is fixedly connected with the first hanging ladder body, when the device is used, a double-end motor and a drum wheel are started to rotate, a steel cable is tightened or loosened, and the second hanging ladder body is fixedly connected with the workbench. Meanwhile, a double-end motor is started, a threaded rod rotates, a sliding plate is driven to move, a drum wheel is driven to move, cable arrangement work is conducted, steel cables are neatly arranged on the surface of the drum wheel, and then the steel cables and a pulley are stably installed in a matched mode; according to the bridge maintenance hanging ladder, the working table is arranged, so that when the bridge maintenance hanging ladder is used, bridges with diff