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Optical alignment method for shipbuilding central axis

A lighting and shafting technology, which is applied in shipbuilding, ship parts, ships, etc., can solve the problems of slowing down the loading speed of superstructures, reducing the strength of hull structures, wasting labor costs and material costs, and achieving the goal of improving shipbuilding efficiency Effect

Inactive Publication Date: 2008-11-19
HUDONG ZHONGHUA SHIPBUILDINGGROUP
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] However, since this construction method is a step-by-step construction method, the main deck cannot be sealed before the main engine and gearbox are hoisted, and the superstructure structure cannot be loaded, so that the work can only be carried out in a single line, which greatly slows down the loading speed of the superstructure.
Moreover, a large number of deck openings not only waste a lot of labor costs and material costs, but also reduce the structural strength of the hull.

Method used

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  • Optical alignment method for shipbuilding central axis
  • Optical alignment method for shipbuilding central axis
  • Optical alignment method for shipbuilding central axis

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Embodiment Construction

[0026] The lighting process method of the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

[0027] Taking a 75,000-ton bulk carrier as an example, the main engine is hoisted first and then the lighting process is used as an example to illustrate the practical application of the shafting lighting method in shipbuilding of the present invention. The bulk carrier includes four main engines and two gearboxes. The total weight of the above components reaches 200 tons. After being installed on the ship, the hull will sink and deform due to its own weight. The above deformation must be prevented and corrected during the ship construction process , to meet the design requirements of the ship. Under the premise that it is difficult to change the hull structure and the total amount of the main engine, it is necessary to change the construction sequence of the ship to achieve the above purpose. In the present inv...

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Abstract

The invention relates to a shafting optical alignment method for ship construction, which comprises the following steps: (1) constructing an auxiliary engine room and hermetically finishing all cabins below the deck; (2) welding a stern tube and a front and a rear shaft brackets; (3) lifting a main engine and a gear box in the engine room and sealing a main deck; (4) measuring the baseline of the hull, and trimming according to the structural deformation of the hull; and (5) carrying out shafting optical alignment. According to the shafting optical alignment method, the shafting optical alignment method is carried out after lifting and arranging the main engine and sealing the deck, so that the ship can be constructed simultaneously in multiline to greatly improve the ship construction efficiency.

Description

technical field [0001] The present invention relates to shipbuilding, in particular to a method for illuminating shafting during shipbuilding, in order to solve the problem of low precision and problems caused by lighting and hoisting the main engine after the deck is installed first in the prior art. The disadvantage of low efficiency. Background technique [0002] In the process of large-scale ship construction, if according to the previous ship construction method, it is to wait until the main hull is built, and after the main deck is penetrated, the main deck is first illuminated and then the main deck is opened to realize the hoisting of the main engine and the gear box. The advantage of this type of construction method is that the lighting conditions of the shaft system are good, and a large amount of welding work has been completed, which means that the influence of welding deformation on the lighting is relatively small, so the risk is relatively small, so it is adop...

Claims

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Application Information

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IPC IPC(8): B63B9/00
Inventor 张治军姚银弟陈文汉
Owner HUDONG ZHONGHUA SHIPBUILDINGGROUP
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