The paper briefly introduces the main structure of 70-ton climbing girder erection crane of the steel truss arch beam of Dashengguan Yangtze Bridge of Nanjing,illustrates the preparation for the traction shifting operation of the 70-ton climbing girder erection crane,how to undertake the traction shifting,how to have the anchorage after the traction shifting,and how to adjust the upper chassis,so as to provide the experience for the safe shifting of the similar equipment.%简要介绍南京大胜关长江大桥主桥钢桁拱梁70 t爬坡架梁吊机主要结构,详细阐述了70 t爬坡架梁吊机牵引移机准备工作及如何牵引移机,牵引移机到位后如何锚固、如何调平上底盘等内容,为今后同类设备安全移机提供了经验。
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