What are the advantages and disadvantages of ship crane?

Ship crane is a kind of ship crane, also known as crane, is a special crane operating in the marine environment, mainly used for cargo transfer between ships, sea supply, underwater equipment delivery and recovery.

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Ship cranes have the advantages of high loading and unloading efficiency, simple operation, small deck area, especially suitable for heavy cargo lifting. But ship cranes due to self-importance, large volume, high center of gravity, the stability of the ship has a certain impact on the ship’s power station and maintenance technology requirements are higher, so the price of ship cranes is relatively high. Ship cranes can be divided into cable-type pitching cranes and cylinder-type pitching cranes according to the structure. Cranes can be divided into electric drive and electro-hydraulic drive according to the drive mode. Among them, electric cranes have high efficiency, convenient remote control, simple operation and less maintenance; electro-hydraulic drive cranes have the advantages of smooth operation, light weight and small volume.

Ship application environment is special, the operation of ship crane will be affected by the ship’s own movement, specifically, the crane ship and the receiving ship will sink and sway with the waves, resulting in load swing; in the lifting process, it is easy to cause the load that has been lifted and the deck collision, or has been lowered the load is not separated from the hook to hang again, threatening the safety of the operation. Therefore, the operation of ship cranes requires more experienced and skilled operators. Due to our current market situation, the products exported abroad is not good, our ship crane is a maritime transport, and in the sea supply, at this stage, the ship crane is affected, Haoying Xiaobian and popularize the application of the ship crane, so that you have an understanding of the ship crane at this stage.

Ship crane is a kind of special crane for transportation operations in the marine environment. It is mainly used for important tasks such as transportation and transfer of goods between ships, supply at sea, and placement and recovery of underwater equipment. The special application environment at sea brings great challenges to the control of ship cranes. On the one hand, similar to a variety of underdriven crane equipment on land, it is necessary to control the swing generated during the load transportation to ensure its positioning accuracy and transportation efficiency; on the other hand, since the crane is fixed on a mobile platform such as a ship, the movement of the platform itself has a strong influence on the movement of the load, and in many cases, the movement of the load’s lifting and lowering point is inconsistent with the movement of the crane itself. Specifically, in the course of the work, the lifting vessel and receiving vessel will pitch, transverse swing and heave with the waves, which will lead to the swing of the load; especially in the lifting process, this movement of the vessel is likely to lead to the load that has been lifted to collide with the deck again, or the load that has been lowered has not yet been detached from the hook to be suspended again, thus threatening the safety of the operation. This coupling motion may cause very serious consequences, especially when the ship is being replenished.

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