| 摘要 |
<p>A multi purpose hoisting device (2) for use on a floating vessel (1) having a deck (22), the hoisting device (2) comprising: - a load bearing structure (6) to be mounted on the vessel (1); - a main hoisting mechanism (8) for raising and lowering an object above the deck (22) of the vessel (1), the main hoisting mechanism (8) comprising: i. at least one main hoisting winch (15,16); ii. an upper cable pulley block (23) supported by the load bearing structure (6); said upper cable pulley block comprising multiple pulleys; iii. a travelling cable pulley block (24) comprising multiple pulleys, provided with an object connecting device for releasable connecting an object to the travelling cable pulley block (24); iv. a main hoisting cable (17) associated with the at least one main hoisting winch (15, 16), which main hoisting cable (17) is passed over the pulleys of the upper cable pulley block (23) and the pulleys of the travelling pulley block (24) in a multiple fall configuration, such that the travelling cable pulley block (24) is moveable relative to the load bearing structure (6) by using the at least one main hoisting winch (15, 16); - a main hoist heave compensation mechanism (19,20,26) associated with the main hoisting cable (17) for damping the effect of sea-state induced motion of the vessel (1) onto an object supported by the main hoisting cable (17).</p> |
