Ship cross section assignment method

Abstract

The invention provides a ship cross section assignment method. The method includes the following steps that a first measuring instrument capable of determining a first straight line is arranged in a cabin of a ship; the first measuring instrument is adjusted, so that the first straight line is parallel to the middle longitudinal section of the cabin and is approximately parallel to an inner bottom plate; deflection measurement is conducted at a corresponding position of the ship, and the first straight line is corrected according to a specific deflection value, so that the first straight line is parallel to a base line; a second measuring instrument is arranged at a position, needing cross section assignment, in the longitudinal direction of the ship; according to the corrected first straight line, the second measuring instrument is adjusted; a required cross section is assigned on the inner cabin wall by means of the second measuring instrument. The method has the advantages that the assignment precision is high, workloads are small, the utilization of a dock is increased, the production period is shortened, operation is easier, and the machining cost of the ship is greatly reduced.

Description

technical field [0001] The invention relates to a mapping method for a ship's cross section. Background technique [0002] In ship lengthening and reconstruction projects, the hull is usually cut transversely, which requires the determination of the cut cross-section. Therefore, technicians need to draw lines on the outer or inner surface of the hull to determine the cross-section. Theoretically, the cross-section It should be perpendicular to the midline section and the reference horizontal plane of the ship at the same time. This process is usually called the survey of the ship's transverse section. [0003] At present, the survey and planning of the cross section of the ship needs to be carried out in the dry dock. The general steps are: draw the center line of the ship's breadth and the reference rib position on the bottom of the dock; place the ship according to the center line of the ship's breadth and the reference frame position; draw a section line on the bottom of...

AI Technical Summary

Problems solved by technology

[0004] This method of planning is to draw the cross-section of the ship indirectly by first drawing a line in the dock, and in the process of planning, it is difficult to adjust the horizontal state of the bottom of the ship, and this method is only applicable to dry docks, so this method There are the following defects: low accuracy of survey and planning, heavy workload, resulting in low utilization rate of the dock

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