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A half-boat underwater closing method

A technology of ship hull and dock, applied in the field of precision control of half-ship closing, can solve problems such as inapplicability and heavy weight, and achieve the effect of saving cost, ensuring safety and ensuring accuracy

Inactive Publication Date: 2014-10-15
CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the heavy weight of the half-ship of a large ship, the conventional hoisting method or the method of moving the ship with a trolley is no longer applicable

Method used

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  • A half-boat underwater closing method
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  • A half-boat underwater closing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A method of half-ship underwater folding, which is completed by the following steps:

[0046] 1) Such as figure 1 As shown, the two halves of the ship are independently carried and built in the dock, and half of the ship’s end data (such as Figure 8 (Shown) as a basis for carrying the other half of the ship, so that the same side of the two halves of the ship meets the requirements;

[0047] 2) Draw a baseline of the whole ship at the pre-closed dock, and arrange each half-dock pier at this baseline height;

[0048] 3) Arrange precision measuring instruments 3 on the dock wall and door, and mark the captain's mark and hull centerline after sitting on the pier;

[0049] 4) Arrange the hanging yards installed on the half-hull shell, the guide plate 7, the light target attached to the half-hull shell, and the pull yard 5 installed on the dock wall track, installed on the inner side wall of the dock wall to support each half of the hull The limit support frame 4; the pull code 5 ...

Embodiment 2

[0059] A method of half-ship underwater folding, which is completed by the following steps:

[0060] 1) Such as figure 1 As shown, the two halves of the ship are separately carried and built in the dock. When the half ships are carried separately, steel piers are used in the longitudinal keel area to prevent the unevenness of the sinking of the piers due to the uneven weight of the hull during the loading process. Ensure the accuracy requirements of the bottom baseline after closing; use half of the ship’s end face data (such as Figure 8 (Shown) as a basis for carrying the other half of the ship, so that the same plane of the two halves of the ship’s closing mouth is within ±8mm;

[0061] 2) Draw a baseline of the whole ship at the pre-closed dock, and arrange the half-dock piers at the height of the baseline, and arrange steel piers on the nearest row of piers on both sides of the closing opening to reduce the piers due to half-ship trim The influence of time on the height of th...

Embodiment 3

[0073] A method of half-ship underwater folding, which is completed by the following steps:

[0074] 1) Such as figure 1 As shown, the two halves of the ship are independently carried and built in the dock. When the half of the ship is carried separately, steel piers are used in the longitudinal keel area to prevent the unevenness of the sinking of the piers during the loading process due to the uneven weight of the hull. Ensure the accuracy requirements of the bottom baseline after closing; use half of the ship’s end face data (such as Figure 8 (Shown) as a basis for carrying the other half of the ship, so that the same plane of the two halves of the ship is within ±8mm;

[0075] 2) Draw a baseline of the whole ship at the pre-closed dock, and arrange the half-dock piers at the height of the baseline, and arrange steel piers on the nearest row of piers on both sides of the closing opening to reduce the piers due to half-ship trim The influence of time on the height of the dock; ...

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Abstract

The invention relates to an underwater folding method for half ships, which belongs to the field of ship building installation and solves the problem that conventional lifting and a method of utilizing a cart to move a ship cannot be suitable for folding two independently built half ships which are provided with independent reference lines. The underwater folding method for the half ships utilizes self weight of the half ships and difference of the buoyancy center, the half ships are docked successively when a dock drains water outwards, the half ship docked later is docked with the half ship placed on the pier first to serve as the standard, the fact that the distance between slits of a folding opening after docking is within a welding slit range allowed by the standard is guaranteed so that underwater docking of the half ships is finished; or a standard half ship is enabled not to float by the methods of ballasting, cabin breaking and the like, and after other half ships completely float, the other half ships are moved to a folding station to perform docking and folding, and ultimately the precision requirements of a principal dimension, a reference line precision, slits of the folding opening and the like are met after all the half ships are docked. The underwater folding method for the half ships effectively saves dock crane resources, is high in safety during the operation process, is simple and practical, and can be widely applied to various producing processes of large ships.

Description

Technical field [0001] The invention relates to a ship construction and installation technology, in particular, to a precision control method for half-ship closing. Background technique [0002] In ship construction, the ship construction cycle is an important manifestation of a shipyard's construction ability, and it is also an important indicator for measuring and delivering ships and achieving economic benefits. The most direct way to shorten the ship construction cycle is to shorten the berth or dock cycle. Modern large shipyards generally adopt shipyard assembly, and increasing the utilization rate of the shipyard, that is, increasing the number of docks to bear the brunt has become the bottleneck that shipyards need to break through. Modern large shipyards generally face the problems of more ship types and short construction period. Dividing the entire ship into two and a half ships can effectively improve the utilization rate of the dock, and is conducive to the balanced ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B9/06
Inventor 何琎
Owner CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY
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