The invention relates to a touchdown turning process of a subsection. During turning, a first steel wire rope and a second steel wire rope are respectively connected with a first lug on the side of a long shaft and a second lug on the side of a short shaft on the same side of the subsection; the first steel wire rope is released slowly by retracting and releasing of the first and second steel wire ropes; meanwhile, a third steel wire rope is connected with the other third lug positioned on the short shaft of the subsection to ensure that the third lug is stressed and a lower foot point of a touchdown turning protective sleeve touches down; then, when the foothold point of the touchdown turning protective sleeve touches down, the touchdown turning protective sleeve slowly rotates to ensure that the subsection is vertical; finally, the second steel wire rope is released slowly, and a fourth lug on the side of the other long shaft is connected with a fourth steel wire rope and the fourth lug is stressed; an upper foot point of the turning protective sleeve touches down and rotates, the subsection keeps flat, and the turning of the subsection is completed. The touchdown turning process of the subsection has the advantages that the cost is reduced and the turning efficiency is increased.
Touchdown turning process of subsection
2015-04-22
Patent
Elektronische Ressource
Englisch
IPC: | B66C Krane , CRANES |
British Library Conference Proceedings | 1995
|NTRS | 2004
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