| 摘要 |
<p>614965 A cantilever system (40B) for a jack-up rig (100), the system comprising: a hull (20); a beam (41) movably coupled to the hull (20) with a first end of the beam (41) extendable over an edge (25) of the hull (20) while a second end of the beam is positioned on the hull (20); a passive hold-down member (60) that is spaced from a support member (50) to support the beam (41), the passive hold-down member (60) positioned at a predetermined distance from the support member (50) such that when the beam (41) is fully extended, a maximum load that the beam (41) supports is increased but a maximum reach of the beam (41) is reduced. The beam (41) is secured to the hull (20) by a plate member of the passive hold-down member (60) that extends below a surface of the hull (20). The system further has an extension member (47) coupled to the second end of the beam to increase the length of the beam (41), wherein when the beam (41) is fully extended with the extension member (47), the maximum reach of the beam (41) is increased.</p> |
