Marine crane is a special crane that performs transportation operations in the marine environment. It is mainly used for important tasks such as the transportation and transfer of goods between ships, offshore supply, delivery and recovery of underwater operation equipment and so on. The marine crane is composed of boom, lifting column (or lifting mast), rigging and winch (or cargo crane). Boom device is a traditional cargo lifting equipment on board. Although there are many ropes and troublesome operation, it is still widely used because of its simple structure, easy manufacture and low cost.
Advantages of marine crane:
① High loading and unloading efficiency
② High operation efficiency
③ Small occupied deck area
④ It is suitable for loading and hoisting heavy goods
The control of marine crane is mainly divided into two aspects: vertical control to reduce the influence of hull motion and lateral anti swing to restrain load swing. Marine crane is a special crane that performs transportation operations in the marine environment. It is mainly used for important tasks such as the transportation and transfer of goods between ships, offshore supply, delivery and recovery of underwater operation equipment and so on. For vertical control, the commonly used method is to connect the receiving ship through the mechanical structure on the crane ship and sense its relative motion, so as to synchronize the change of rope length with the heave motion of the receiving ship, so as to compensate the relative motion of the two ships, and complete the take-off and landing transportation of the load on this basis.
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