Abstract:Hydraulic cable hoist mainly includes four parts: walking mechanism, steel truss, hydraulic lifting system and control system. The construction scheme of the main beam of the Zhuzhou Yangtze River Bridge in Wuhan is proposed to adopt hydraulic cable hoist. The paper proposes a walking mode combining hydraulic jack traction and multi-wheel walking, in which each walking wheel can be lifted or lifted independently or in combination, so that the hydraulic jack can still be steadily pulled during the walking process, and the walking wheel has been in contact with the main cable, the structure is simple, the walking speed is fast, the center of gravity of the structure is relatively low, and the overall safety is good. The walking mechanism of the cable hoisting crane is designed as a bi-directional symmetrical structure, which can realize the uphill and downhill walking in the same direction. The hydraulic pump station, which provides power for the hydraulic system, uses the diesel engine to drive the hydraulic pump station directly, which saves energy and reduces the volume of the pump station and generator combined system. The hydraulic lifting jack adopts a new structure that is easy to change the clip, and the retracting and retracting steel strand adopts a hydraulic motor power retracting and retracting device. Four new 5000k N cable hoisting cranes with hydraulic traction combined with rolling wheels were developed and applied to practical projects after the type test in the factory. From September 2013 to December 2013, 143 main beams of the whole bridge of Zhuozhou Yangtze River Bridge were successfully erected. The practice proves that the new cable-borne crane system developed is successful.