Method for preassembling anchor chock and hawse pipe in segmented mode

Abstract

The method comprises the following steps that S1, a ship bow is divided into an upper-layer section, a middle-layer section and a lower-layer section, the upper-layer section comprises a bow bulwark, the middle-layer section comprises the installation position of a forecastle deck and the overall anchor platform, and the lower-layer section comprises the installation position of a forecastle deck and the overall anchor platform; the lower-layer subsection comprises a main deck after the overall mounting position of the anchor platform is removed; s2, an anchor table and a chain pipe are pre-installed on the middle-layer section; and S3, combining the upper-layer section, the middle-layer section and the lower-layer section together. According to the method for pre-installing the anchor chock and the anchor chain pipe in the segmented mode, the workload of total assembling and closing in the later period is reduced, and meanwhile the completeness of segmented paint is guaranteed; the anchor table structure is high in rigidity, and the complexity of a reinforcing and shape maintaining tool is reduced; embedding and inserting are not needed during folding, the difficulty of sectional folding is reduced, the sectional precision is improved, the in-dock hoisting time is shortened, the working efficiency is improved, and technical guarantee is provided for timely undocking.

Description

technical field [0001] The invention belongs to the technical field of shipbuilding, and particularly relates to a method for segmented pre-installation of anchor abutments and anchor chain pipes. Background technique [0002] In ship construction, the installation of anchor abutments and anchor chain pipes has always been a long-standing problem. If they are installed in the later stage of the general assembly or even the loading stage, it will increase the overall assembly and carrying time for a long time, and it is very difficult. This is not a problem. It is in line with the general trend of modern ship construction to shorten the slipway cycle and increase the pre-outfitting rate of sections. [0003] The anchorage structure usually spans the first floor of the platform. In order to ensure the integrity of the anchorage and anchor chain pipe structure, and to reduce the difficulty of the overall assembly or carrying, it is necessary to cut off the position of the outer...

AI Technical Summary

Problems solved by technology

[0003] The anchor platform structure usually spans a layer of platform. In order to ensure the integrity of the anchor platform and anchor chain pipe structure and reduce the difficulty of assembly or loading, it is necessary to cut off the outer plate around the anchor platform. In order to reduce the difficulty of lifting, The plate seam should be made into a trumpet shape with a large top and a small bottom, and a piece of the crossed platform near the anchor platform is cut out, including the platform plate and surrounding structures. This operation leads to the addition of many structural butt joints ;Due to the linear shape of the outer plate, the trumpet-shaped outer plate and the outer plate of the lower section are processed separately, which is difficult to precisely control, and a closing allowance of 30mm is usually added; even so, if the section is made into a whole, There is no distinction between left and right sides, and it is very difficult to insert the left and right sides at the same time when lifting in the later stage. Therefore, it is usually divided into two sections on the left and right sides to reduce the time and difficulty of lifting; the anchor chain pipe is usually long and cannot be processed as a whole. It needs to be divided into two sections or even more. When the anchor chain pipe is hoisted, it is very difficult to dock because it is docked in the air. Moreover, the straightness of the anchor chain pipe is required to be very high. Usually, the deviation is required to be less than 1°, so the assembly is difficult. Big

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