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Control method for ship-body section carrying accuracy based on OTS

A control method and precision technology, which is applied to ship parts, ship construction, ships, etc., can solve the problems of reset and high rate of segmental reset of head and tail lines, and achieve the effect of reducing reset time, fast loading, and high precision

Inactive Publication Date: 2017-12-22
SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD
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  • Summary
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, after the application of digital dock technology, OTS simulation loading is implemented for the sections. Although the one-time arrival rate has been improved, there are frequent resets, especially the reset rate of the head-to-tail line section is even higher.

Method used

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  • Control method for ship-body section carrying accuracy based on OTS
  • Control method for ship-body section carrying accuracy based on OTS
  • Control method for ship-body section carrying accuracy based on OTS

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specific Embodiment approach

[0042] see again Figure 2a to Figure 4 , the specific embodiment of the present invention is as follows:

[0043] When performing measurement phase 10,

[0044] First select ten precision attention points on the reference segment 200 in the dock, and these ten accuracy attention points are all located at an end face that will be connected with the 11A subsection 100; then measure ten accuracy attention points with a total station 3D coordinates, and save the measurement data in the memory of the total station;

[0045] On the 11A subsection 100 on the platform, twenty-six precision attention points are selected, wherein the positions of twenty-one precision attention points are located at the end connecting with the reference segment 200, and the other five precision attention points are Located at the end facing away from the reference segment 200 , the five precision focus points are mainly for analyzing the deviation between the centerline of the stern shaft hole and the...

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Abstract

The invention discloses a control method for the ship-body section carrying accuracy based on OTS. The control method includes the steps of a measurement stage, a simulation stage and a lifting preparation stage, wherein the measurement stage includes the steps of data collection and conversion and data analysis; when the data collection and conversion step is carried out, actually-measured data is guided into a computer to generate a measurement file, and then a deviation value of the actually-measured data and theoretical data is calculated; when the data analysis step is carried out, a total-group section and a basic section are simulated and carried in the computer, a deviation value appears when the total-group section is in place to be in the best form, and margin data of the total-group section is obtained; the lifting preparation stage includes the steps of margin marking and margin cutting; when the margin marking step is carried out, margin lines are marked off on the total-group section according to the margin data; when the margin cutting step is carried out, margins on the total-group section are cut off along the margin lines, and the total-group section is margin-free carrying. According to the control method, sections are successfully lifted and carried one time, and resetting time is shortened.

Description

technical field [0001] The invention relates to a method for controlling the loading accuracy of hull sections based on OTS (one time setting-one-time-in-place technology). Background technique [0002] The traditional carrying positioning method generally adopts secondary positioning, that is, first hoisting a section (total section) into the dock (sway) for positioning, and the construction personnel carry out margin line planning for the carrying section (total section) according to the relevant datum lines , and then loosen the gantry crane, and then perform the second positioning (reset) after the allowance is cut. The first positioning is the cutting allowance, and the second is the segmented positioning. This traditional loading method takes a long time, and the positioning and reset need to be repaired in the dock, so it is impossible to quickly load the loose hook. [0003] With the continuous innovation of shipbuilding methods and models, the original hoisting pro...

Claims

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Application Information

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IPC IPC(8): B63B9/06
CPCB63B73/00
Inventor 樊冬辉刘勇奚宝成张伟忠项勋王文杰张栋梁
Owner SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD
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