The method of determining the base line of the ship's stern when the shafting is aligned in shipbuilding

Abstract

The invention relates to a method for determining a base line of a ship stern in shafting alignment in the ship construction process. In the method, after the deflections of keels in a hull are offsetto the same side of the hull, the deflections can be measured, and an average deflection value is calculated and serves as a height basis for shafting alignment. The method relates to a special tool.The special tool is mainly composed of steel channels which are made of level-A steel, all components of the tool are welded, the arrangement position of the tool on the ground needs to be provided with embedded parts, and the tool is welded to the embedded parts on the ground to be rigidly fixed. By the adoption of the method and tool, the position of the base line of the ship stern can be accurately and quickly determined, the height basis is provided for the center line of shafting alignment, so that the center of a bored hole of a stern shaft tube is determined, and the main machine axisheight and the main machine epoxy thickness are determined.

Description

technical field [0001] The invention relates to ship building, in particular to a method for providing a ship stern baseline when shafting is centered in ship building. Background technique [0002] With the advancement of science and technology, the pace of modern shipbuilding is getting faster and faster. In order to adapt to better and faster development, shortening the construction cycle of slipways / docks is the main direction of current research on how to improve ship construction efficiency and product construction capabilities. [0003] At present, the hoisting of the main engine is an important node in the construction process of the ship's berth or dock. The hoisting of the main engine means that the section below the main deck of the main hull part of the ship product has been hoisted, and below the main deck, the engine room The sub-assembly work after the front wall is completed, and the electric welding work of the main structure has been completed. After the c...

AI Technical Summary

Problems solved by technology

[0004] When building a ship with an inclined berth, since the centerline of the hull is arranged with piers from front to back, it is impossible to directly measure the hull baseline deflection of the center keel to determine the height of the stern baseline

It is often not easy to directly measure and determine the centerline of the hull. The existing technology is roughly limited to measurement, which is often rough, and there are also situations where the ship’s outer plate is uneven and the thickness changes, resulting in inaccurate measurement and difficult to effectively Determining the centerline of the hull must prompt us to think of other effective ways to achieve

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