| 摘要 |
The climbing system comprises an upper head ( 5 ) attached to the bracket arrangement ( 3 ) and also solidly joined to the body of a hydraulic cylinder ( 6 ) the rod whereof is attached to a lower head ( 7 ), both heads ( 5 ) and ( 7 ) having a body ( 8 ) with upper ( 9 ) and lower ( 10 ) wings defining there between guides that encircle the upright ( 1 ), each of the heads having a rocker ( 11 ) that can act on flanges or blocks ( 14 ) distributed along the upright ( 1 ). The rocker is mounted on a transversal axis ( 12 ), against the action of a spring ( 13 ) that permanently acts on the rocker in any of its operating positions, and there is an outer handle ( 19 ) solidly joined to the transversal axis ( 12 ), which can make said axis ( 12 ) rotate to change the position of the rocker in relation to the upright ( 1 ). The system also has a safety device that makes it possible to limit the positions of the rocker.
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