Five-degree-of-freedom metamorphic multipurpose ship berthing device

Abstract

The invention discloses a five-degree-of-freedom metamorphic multipurpose ship berthing device which comprises mounting seats, parallel berthing supports, elliptic chuck seats, magnetic chucks and electromagnetic brakes. When in berthing, the parallel berthing supports drive the elliptic chuck seats and the magnetic chucks to extend outwards from a hull, and a main ship hull is connected with a wharf or other hulls by electromagnetic force generated by the magnetic chucks after energization to realize berthing. When in unberthing, the magnetic chucks are powered off, the parallel berthing supports drive the elliptic magnetic chucks to retract into the hull. Three telescopic cylinders in the parallel berthing supports are double-acting cylinders or double-acting hydraulic cylinders, and the device has bidirectional pressure maintaining and vibration damping functions besides connecting, supporting and telescoping functions. Multipoint stable berthing can be realized by multipoint arrangement, collision force on the wharf, an offshore platform or other ships in berthing is greatly reduced, and berthing safety is ensured. The five-degree-of-freedom metamorphic multipurpose ship berthing device has the advantages of simple structure, high safety, good stability, simplicity and convenience in operation and maintenance and the like.

Description

technical field [0001] The invention belongs to the technical field of ship equipment, in particular to a five-degree-of-freedom metamorphic multipurpose ship berthing device. Background technique [0002] At present, when small and medium-sized ships are berthed or departed from docks, offshore platforms or other large ships, mooring is mostly realized through the manual operation of multiple people to fix the cables. When the port is berthing, the impact force generated by the ship berthing, the mooring force generated by the offshore wind after the ship berths, and the ship squeeze force generated by the onshore wind are three common dock dynamic loads. The impact of force on high-piled wharves and deep-water open wharves is particularly significant, and it is the main reason for the frequent occurrence of berthing safety hazards. During the operation and production process of offshore platforms in the petroleum industry, ships need to berth on offshore platforms or well...

AI Technical Summary

Problems solved by technology

When a ship is berthing an offshore platform or wellhead, the mooring personnel need to frequently jump and fix the cables between the ship and the platform. The berthing operation brings major safety hazards to the operators

The artificial cable mooring method has the following disadvantages: (1) It requires multiple people to operate at the same time, which is time-consuming and laborious; (2) The location of the ship's berthing is not accurate enough, and friction between the hull and the wharf, offshore platform or other ships often occurs; (3) The ship Poor stability after docking, especially when high-speed passenger ships or mooring at sea, the lateral swing is relatively large, which affects the safety and comfort of people getting on and off the ship

But there are many defects in using waste tires as the anti-collision decompression device: (1) when the ship is berthed, because the ships are still in motion, and the waste tires are fixed, the waste tires are only used when the ships are close to the shore. To protect the effect, the impact of the ship on the tire is very large, and there will be greater friction between the waste tire and the ship, which will still cause damage to the ship's surface; (2) the tire is fixed and plays a role in the rapid docking of the ship The protective effect is limited, especially under the action of strong transverse wind, when the ship docks too fast, the existing fixed protective device often cannot effectively protect the hull and the pile platform in front; (3) The appearance of waste tires is ugly, affecting the water landscape, And it is easy to fall into the water and cause water pollution

The Chinese utility model patent with the application number of 200820007920.6 discloses a magnetic mooring device for ships, which includes a magnetic suction cup, an elastic shock absorber and a hoist. Mooring has a certain auxiliary vibration reduction effect, but the mooring device is fixed outside the hull and cannot expand and contract independently. After unmooring, it will affect the navigation of the ship, and the mooring operation still requires winches and steel cables, which has poor stability

The Chinese invention patent with the application number 201310045188.7 discloses a suspension and folding berthing device, which includes a support part and a retractable device rotatably connected to an offshore platform, and is operated by a winch and a pull rope. The mooring stability of this technical solution is and poor vibration damping

The Chinese invention patent with application number 201380030009.0 discloses a mooring device for mooring ships, including a base, a movable arm structure supported by the base, and a magnet mounted in a frame, which is connected to the frame by a leaf spring On the beam, it has a certain vibration damping effect, but the vibration damping direction of the structure is single

The Chinese invention patent with the application number 201410467461.X discloses a multi-purpose ship berthing device, which includes one or more double-acting single-piston oil cylinders arranged in the hull, and an electromagnet is fixed on the outer end of the piston rod. The front end of the mast is equipped with a two-stage decompression and slow pulling device. This berthing device can only achieve vibration reduction in one direction, and it has more constraints on the hull and is less safe.

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