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Traction method for enabling parallel built ships of 300,000 dry docks to undock

A dry-dock, parallel technique used in shipbuilding

Active Publication Date: 2013-03-13
DALIAN SHIPBUILDING IND
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  • Abstract
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Problems solved by technology

And because the two ships are built in parallel, tools such as winches need to be used alternately when the ships are undocked separately

Method used

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  • Traction method for enabling parallel built ships of 300,000 dry docks to undock
  • Traction method for enabling parallel built ships of 300,000 dry docks to undock
  • Traction method for enabling parallel built ships of 300,000 dry docks to undock

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Embodiment Construction

[0030] Traction prerequisites:

[0031] 1. The distance between the whole ship and the half section of parallel ships in the dock is small, which is to make full use of the space in the dock to build ships. The force of the floating cable at the moment of floating of the ship is affected by the seasonal wind direction. The tightness of the front and rear cables is different, in order to avoid the phenomenon of scratching between the whole ship and the half section, the whole ship and the dock door.

[0032] 2. The docking berth of the ship determines the undocking sequence of the undocked ships, so as to determine the hanging method of the fender and ball on the first undocked ship. The ball is attached to the ship to prevent the outer plates of the two ships from scratching each other due to the small gap between the two ships and the poor running posture of the two ships, resulting in damage to the outer plate paint and outer plate wrapping. The anti-collision ball when un...

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Abstract

The invention discloses a traction method for enabling parallel built ships of 300,000 dry docks to undock. The traction method comprises the following steps: 1. sealing two ship bodies built in parallel in the dry docks with mooring ropes and floating balls; opening a dock door, pressurizing water in the docks, and enabling the parallel ship bodies to float up; 3. tying tugs in the middles of the tail parts of the first-undocked ship bodies towards a dock door with a mooring rope so as to realize undocking; and finally realizing the undocking of the later-undocked ship bodies. According to practical conditions of parallel built ships of 300,000 dry docks, the selecting and sealing sequence of ship docking and undocking traction tools, traction process control, matching with the tugs and the like can be designed and determined; in the process, the sealing condition of dry docks in water pressurization, ship sealing condition in traction, and floating condition in ship undocking can be designed; and the condition that ships can safely and smoothly and fast undock can be ensured by utilizing modes of winch distribution and matching, towing vehicle control and the like.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, more specifically, to a method for undocking after parallel construction in a ship dock. Background technique [0002] Two ships are built in parallel in the dock, and the molded width of the two ships is relatively large. The standard 300,000 dry dock is generally about 90 meters wide, and the gap between ships built in parallel to a certain extent is small. After the 300,000 dry dock is filled with water and the dock door is opened, the two ships built in parallel are in a sealed state Under the circumstances, due to space reasons, the tugboat cannot enter between the two ships, so it is necessary to set up a towing trolley for towing operations. And because the two ships are built in parallel, tools such as winches need to be used alternately when the ships are undocked separately. When a ship is undocked, the other ship can be assisted by a tugboat, and how to cooperate with it is also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63C3/00
Inventor 吴成彬钱峰李士达董仲伟刘青韩小元
Owner DALIAN SHIPBUILDING IND
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