Anchor system installation precision control method for ship building

Abstract

The invention discloses an anchor system installation precision control method for ship building. The control method comprises the steps that the construction precision of a segmented structure is controlled, complete three-dimensional precision completion measurement is conducted on segments, the segment precision problem is eliminated, and a foundation is provided for outfitting precision control. A deck center line and a first gear rib position line away from a stern edge opening are selected as anchor system positioning datum lines; according to the datum lines, the hole opening positions of an anchor chain pipe in an outer plate and the deck are subjected to precision control; holes are formed in the outer plate and the deck, and the anchor chain pipe is installed. The successful implementation of the anchor system installation precision control research initiates the precision control research of large-scale complex outfitting pieces of a company, the specific specifications of outfitting precision control drawings, precision measurement requirements and the like in the project have reference significance for other products of the same type, and the overall precision level is improved.

Description

technical field [0001] The invention belongs to the field of shipbuilding, and in particular relates to a method for controlling the installation accuracy of mooring systems in shipbuilding. Background technique [0002] During the construction of the ship, the installation accuracy of the mooring system has been seriously deviated many times, including the knuckles of the anchor chain barrel, the incorrect position of the anchor, the non-attachment of the anchor fluke and the end surface of the anchor lip, and the failure of the chain stopper to work normally. This resulted in a large number of revision operations in the final assembly department. The main reason is that the manufacturing accuracy of the segmented body is poor, the opening precision of the anchor chain tube on the outer plate and the deck is poor, resulting in poor installation angle of the anchor chain tube, poor positioning accuracy of the anchor platform, and insufficient trimming of the lower opening of...

AI Technical Summary

Problems solved by technology

[0002] During the construction of the ship, the installation accuracy of the mooring system has been seriously deviated many times, including the knuckles of the anchor chain barrel, the incorrect position of the anchor, the non-attachment of the anchor fluke and the end face of the anchor lip, and the failure of the chain stopper to work normally. Leading to a large number of corrective operations in the final assembly department

The main reason is that the manufacturing accuracy of the segmented body is poor, the opening precision of the anchor chain tube on the outer plate and the deck is poor, resulting in poor installation angle of the anchor chain tube, poor positioning accuracy of the anchor platform, and insufficient trimming of the lower margin of the anchor platform coaming And the poor installation position of the anchor lip and the difficulty in construction lead to great difficulties in the installation and positioning of the anchor system

At the same time, there is a lack of unified norms and standards on the measurement and inspection methods of such large-scale outfitting parts, which makes it impossible for inspectors to accurately monitor the installation quality of outfitting parts, and accuracy problems can only be found after entering the final assembly stage

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