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A Method for Installing Curved Longitudinals

An installation method and curved surface technology, applied in the direction of metal processing equipment, manufacturing tools, workpiece edge parts, etc., can solve the problems of difficult assembly accuracy and welding quality, difficult assembly, harsh working environment, etc., to ensure assembly accuracy and welding quality , Ensure the health of employees and avoid difficult processes

Active Publication Date: 2019-06-18
DALIAN SHIPBUILDING IND ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The welding of the outer plate and the longitudinal bone is face-up welding, which has high requirements for welders, and it is difficult to guarantee the assembly accuracy and welding quality
[0006] 2. The outer plate, the floor plate and the platform plate form a cabin, and the working environment in the cabin is harsh and the efficiency is low
[0007] 3. Since there is no margin in the processing of the outer plate, the outer plate is often short due to welding shrinkage during the welding process of the longitudinal bone
[0008] However, if the outer panel is used as a tire, a lot of labor will be wasted in the manufacture of the tire frame, and the structure will be staggered, making assembly difficult. What’s more, the accuracy of the container device cannot be tested, which will bring great hidden dangers to the subsequent closure, so it cannot be used.

Method used

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  • A Method for Installing Curved Longitudinals
  • A Method for Installing Curved Longitudinals
  • A Method for Installing Curved Longitudinals

Examples

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Embodiment Construction

[0033] 1: if figure 1 with figure 2 As shown, the bulk outer plates are placed in any free space, but the structural side is facing upwards, which is convenient for marking and welding of longitudinals.

[0034] 2: if Figure 5 As shown, the seam line 3 of the first strake on the top of the figure is the dashed line 0:8 and the longitudinal line (including the platform line, the longitudinal bone line, and the seam line of the lower mouth of the single strake), and the value of the dashed line is taken as the rib position Data expansion value, vertical points drawn from top to bottom. The relevant point falls on the rib line 7, and the value of the lower plate mouth of the board is 13 to be recorded for future analysis. Connecting the longitudinal points of each rib line 7 together is the required longitudinal line. Note that if there is any seam on the uppermost board The board opening value 13 left by the previous board is added separately as a compensation value.

[0...

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PUM

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Abstract

The invention discloses a hook face longitudinal installation method. The method includes the steps that firstly, shell plates (11) are sequentially laid, and structural faces used for connection are upward; secondly, a longitudinal line is drawn with the vertex of the first column of shell plates as the null point; thirdly, lineation is conducted on all columns of plates in the same mode in the second step, and then an overall lower plate opening value (13) is determined; fourthly, the vertex of the lower end of the lowest shell plate (11) serves as a lineation zero point, and the second step and the third step are repeated from bottom to top so as to verify accuracy of rib numbers; fifthly, longitudinals (12) are nailed on the shell plates according to the longitudinal lines, a longitudinal dip angle is formed between each shell plate and the corresponding longitudinal on each longitudinal installation line (4), and the angles need to be consistent with longitudinal through hole angles (14); sixthly, a grillage obtained in the fifth step is turned over and welded to a middle assembly structure, and flatness of the shell plates is ensured. The method guarantees assembly precision and welding quality, prevents the situation that shell plates are always short due to welding shrinkage in the longitudinal welding process, reduces cost loss, guarantees health of staff, and improves overall efficiency.

Description

technical field [0001] The invention relates to the field of ship manufacturing technology, more specifically, relates to the installation process of the longitudinal frame of the outer plate of the bilge part of the ship. Background technique [0002] As the world shipping market continues to slump, the competition in the shipbuilding market has become more intense. Improving work efficiency, reducing the difficulty of welder construction, reducing the technical level of welders, controlling the accuracy error of steel plates, improving labor, site, environment, and efficiency, and reducing shipbuilding costs are a major focus of ship construction. [0003] Due to the structural characteristics of container ships, the cargo hold is in a stepped shape, such as Figure 11 As shown, the linear curvature of the outer plate 11 is large, the distribution area is wide, and the angle change of the longitudinal bone 12 is large. The routine construction of the sections is done in a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K33/00
CPCB23K33/00
Inventor 孙洪国徐大宝石志东单忠伟张学东
Owner DALIAN SHIPBUILDING IND ENG
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