摘要
Abstract
The complete set of equipment for erection and transportation for double-width large-tonnage box girders is used for transporting and erecting 40m/1300t prefabricated box girders of the Sanmenwan Cross-sea Bridge.Four vehicles are used to transport the double-width large-tonnage box girders, and the girder erecting machine moves the girders in place in the air by longitudinal travelling through holes.The beam transport vehicle adopts synchronous control system and technical principle, flexible closed-loop control to realize dynamic balance of speed and posture among multiple vehicles, and solve the technical problem of inaccurate synchronization of multiple vehicle groups in the existing technology;the bridge erecting machine creatively adopts the design of anti-rail gnawing traveling wheel train and semi-rigid supporting wheel set structure, which respectively solves the technical problem of uneven load distribution inside and outside the rail gnawing traveling wheel of the lifting trolley and the supporting leg supporting wheel.The transportation and erection of all box girders of the Sanmenwan Cross-sea Bridge have been completed safely with this set of equipment, and its research results are of great significance for improving the research and development level of domestic highway and railway construction machinery.关键词
架运成套设备/同步控制/防啃轨行走轮系/半刚性托轮组/方案Key words
complete sets of equipment for erection and transportation/synchronous control/anti-rail gnawing traveling gear train/semi-rigid supporting wheel set/plan分类
交通工程
