Segmental lifting method for ship body provided with hatch coaming

Abstract

The invention discloses a segmental lifting method for a ship body provided with a hatch coaming. The segmental lifting method comprises the following specific steps that a main hook lifting ring andan auxiliary hook lifting ring are installed in the small assembly stage; a first shackle is installed on the main hook lifting ring, a first steel wire rope is fixed to the first shackle, and a second steel wire rope is fixed to the auxiliary hook lifting ring; a deck assembly and other assemblies of the ship body are assembled into ship body segments; the first steel wire rope is connected witha second shackle on a crane; the ship body segments are lifted; and the first shackle and the first steel wire rope are disassembled. According to the segmental lifting method, the lifting rings are installed in the small assembly stage, jacking push operation is converted into plane operation, the lifting rings can be installed without adopting auxiliary jacking push tools, the installing difficulty of the lifting rings is greatly lowered, the installing quality of the lifting rings is greatly improved, the operation difficulty is lowered, quick installing of the lifting rings and the steel wire ropes is achieved, a lot of manpower and material resources are saved, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of ship building, in particular to a segmented hoisting method for a hull with a hatch coaming. Background technique [0002] In the process of ship construction, when the hull is hoisted in sections, it is necessary to weld the lifting rings and connect the wire ropes in advance. Because the hatch coaming structure of the hull is made of special metal material, the lifting ring cannot be welded on the hatch coaming structure, or the pre-installed equipment on the hatch coaming structure cannot be installed with the lifting ring, so the installation of the lifting ring is very troublesome. [0003] During the construction of the hull, the lifting rings are installed after the sections are completed. Since the lifting rings and wire ropes are very heavy, it usually requires the cooperation of multiple people and the use of hoist tools to lift the lifting rings from bottom to top to fix them on the segmented s...

AI Technical Summary

Problems solved by technology

Since the hatch coaming structure of the hull is made of special metal materials, the lifting rings cannot be welded on the hatch coaming structure, or the pre-installed equipment on the hatch coaming structure cannot be installed with lifting rings, so the installation of the lifting rings is very troublesome

[0003] During the construction of the hull, the lifting rings are installed after the sections are completed. Since the lifting rings and wire ropes are very heavy, it usually requires the cooperation of multiple people and the use of hoist tools to lift the lifting rings from bottom to top to fix them on the segmented structure. The installation method is very difficult, the operation is difficult, and the welding angle is not good, it is difficult to ensure the welding quality of the lifting ring, and there are certain hidden dangers in construction

At the same time, due to the heavy weight and poor flexibility of the steel wire rope, it takes a lot of manpower to fix the steel wire rope to the lifting ring, and the efficiency of segmental hoisting is very low

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