Provided are a self-tensioning box girder lifting appliance capable of adjusting a lifting gravity center and an operation method thereof. The self-tensioning box girder lifting appliance comprises amain hanging girder assembly, tensioning girder assemblies, positioning locking screw assemblies and a remote control hydraulic station; the two groups of tension girder assemblies straddle the main hanging girder assembly and can transversely move along the main hanging girder assembly, the positioning locking screw assemblies penetrate through corresponding round holes of the tensioning girder assemblies and the main hanging girder assembly from two sides, and after the tensioning girder assemblies and the main hanging girder assembly are positioned, the tensioning girder assemblies and themain hanging girder assembly can be interlocked and fixed through the positioning locking screw assemblies; and the remote control hydraulic station is arranged on the main hanging girder assembly andis connected with adjusting oil cylinders controlling the main hanging girder assembly and tensioning oil cylinders of the tensioning girder assemblies through a hydraulic hose. According to the lifting appliance, the spherical hinging and an automatic tensioning mechanism are utilized, so that the lifting appliance is tightly bound with segment box girders to achieve gradient adjustment; due tothe adoption of a screw adjusting mechanism, a lifting point can move transversely in a stepless manner so as to adapt to the change of the gravity center position of the segment box girders in different configurations; and the height of a swing center is reduced, the number of operation cylinders is reduced, and the operation method is simple and convenient to implement.

    一种可调整起吊重心的自张紧箱梁吊具及其操作方法,包括:主吊梁总成、张紧梁总成、定位锁紧螺杆总成和远控液压站;两组张紧梁总成骑跨在主吊梁总成上,能够沿着主吊梁总成横向移动,定位锁紧螺杆总成从两侧穿过张紧梁总成和主吊梁总成相应的圆孔,当张紧梁总成和主吊梁总成定位后,可用定位锁紧螺杆总成将它们连锁固定;远控液压站安装在主吊梁总成上面,通过液压软管与控制主吊梁总成的调整油缸和张紧梁总成的张紧油缸相连接。本吊具利用球形铰接和自动张紧机构,使吊具与节段箱梁紧缚并实现坡度调整;采用螺杆调节机构,使起吊点可以无级横移以适应节段箱梁不同构型的重心位置变化;降低了摆动中心高度,减少了操纵油缸数量,操作方法简便。


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    Titel :

    Self-tensioning box girder lifting appliance capable of adjusting lifting gravity center and operation method thereof


    Weitere Titelangaben:

    一种可调整起吊重心的自张紧箱梁吊具及其操作方法


    Erscheinungsdatum :

    2020-08-11


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B66C Krane , CRANES / E01D BRIDGES , Brücken



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