A method for controlling the precision of segmented installation of a container ship positioning pin and a container ship

Abstract

This invention relates to a method for precision control of locating pin installation in container ships and a container ship itself, used for locating pin installation during the sectional stage. The method includes: after the transverse bulkhead section precision inspection is completed, drawing a 150M.K. baseline; using the rib lines perpendicular to the 150M.K. baseline as rib reference lines; obtaining the planar position of the locating pin using the 150M.K. baseline and the rib reference lines; measuring and determining the height position of the locating pin using the hatch coaming as a reference; assembling the transverse bulkhead sections using the 150M.K. baseline as a reference; after the individual hatch covers pass precision inspection, performing a simulated assembly of the hatch covers, adjusting the distance between the locating pin holes of the individual hatch covers based on the actual distance between the locating pins; adjusting the gap between the individual hatch covers to a standard gap by cutting allowance; installing the locating pins during the sectional stage, and positioning the hatch covers according to the locating pins. This invention advances the locating pin installation stage to the sectional stage, ensuring the locating pin installation precision while shortening the construction cycle.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding, specifically to a method for precision control of segmented installation of locating pins in container ships and the container ship itself. Background Technology

[0002] During the construction of container ships, each hatch cover corresponds to a locating pin. Due to the incompleteness of the hatch coaming accessories in the segmented stage, the installation lines for the hatch coaming accessories need to be marked after the hatch cover is hoisted into place. Then, the hatch coaming is hoisted or raised before the construction of the hatch coaming accessories, including the installation of the locating pins, is carried out. Although this construction method can ensure the installation accuracy of the locating pins, it leads to a longer construction cycle.

[0003] In order to shorten the construction cycle, a new construction method was later proposed. For example, the existing technology, such as "Research on the Construction Method of Hatch Cover Locating Pins for Large Container Ships", Zhang Libing, pp. 144-147, Proceedings of the 2014 China Dalian International Maritime Forum, publicly proposed to move the installation time of the hatch cover locating pins to the construction method of the transverse bulkhead section assembly stage, so as to shorten the construction cycle. Summary of the Invention

[0004] In order to install locating pins in the segmented stage while meeting the construction accuracy requirements, this invention provides a method for controlling the accuracy of segmented installation of container locating pins and a container ship. Through the systematic accuracy control method, a unified construction benchmark is adopted to realize the installation of locating pins in the segmented stage.

[0005] The technical objective of this invention is achieved through the following technical solution:

[0006] A method for precision control during the segmented installation of locating pins on container ships, used for installing locating pins in the segmented stage, includes the following steps:

[0007] Step 1: After the accuracy inspection of the transverse bulkhead section is completed, draw the 150M.K baseline on the transverse bulkhead section with the midships seam 150M.K as the reference; use the rib line on the transverse bulkhead section that is perpendicular to the 150M.K baseline as the rib reference line.

[0008] Step 2: Based on the theoretical position data of the locating pin, obtain the planar position of the locating pin using the 150M.K baseline and the rib baseline; measure and determine the height position of the locating pin using the hatch coaming as a reference.

[0009] Step 3: Assemble the transverse bulkhead sections based on the 150M.K baseline;

[0010] Step 4: After the accuracy of each individual hatch cover is qualified, perform a simulated assembly of the hatch covers. Adjust the distance between the positioning pin holes of each individual hatch cover based on the actual distance between the positioning pins; adjust the gap between the individual hatch covers to the standard gap by cutting the allowance.

[0011] Step 5: Install the positioning pins in stages. The hatch cover positioning is directly based on the position of the positioning pins.

[0012] Furthermore, in step 2, if there are at least two locating pins on the same transverse bulkhead section, the first locating pin obtains its planar position based on the theoretical position data of the locating pin using the 150M.K baseline and the rib baseline, and the planar positions of the remaining locating pins are located with the first locating pin as the reference.

[0013] Furthermore, in step 2, the positioning accuracy of the positioning pin is controlled within ±2mm.

[0014] Furthermore, in step 3, the distance between the positioning pins at the closing seams during the assembly of the transverse bulkhead sections is controlled with an accuracy within ±3mm.

[0015] Furthermore, in step 4, when simulating the assembly of the hatch cover, the gap between the individual hatch covers is 30±2mm, and the temperature during measurement is below 30℃.

[0016] Furthermore, in step 5, the hatch clearance is controlled at 30±5mm.

[0017] The present invention also provides a container ship, which is constructed according to the above-described precision control method for segmented installation of container positioning pins.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. This invention advances the installation stage of the positioning pin to the segmented stage, ensuring the installation accuracy of the positioning pin while shortening the construction cycle;

[0020] 2. For the locating pins on the same transverse bulkhead section, the remaining locating pins are positioned in planar position with the position of the first locating pin as a reference, reducing the possibility of error accumulation.

[0021] 3. In this invention, the hatch cover is simulated and assembled by using the actual distance between the locating pins to ensure the accuracy of the subsequent assembly of the hatch cover and the locating pins. Attached Figure Description

[0022] Figure 1 This is a marking diagram for the installation of the locating pins in the transverse bulkhead section of this invention.

[0023] Figure 2 This is a diagram showing the control of the locating pin dimensions in this invention.

[0024] Figure 3 This is a diagram showing the key control points of the hatch cover simulation assembly in this invention.

[0025] In the diagram: 1. Locating pin; 2. Transverse bulkhead section; 3. Closing seam; 4. Hatch cover; 5. Locating pin hole. Detailed Implementation

[0026] The technical solution of the present invention will be further described below with reference to specific embodiments:

[0027] A method for precision control of locating pin installation in sections of a container ship, and a container ship thereof. This precision control method is used to install locating pins during the sectioning stage, and includes the following steps:

[0028] Step 1: After the accuracy inspection of the transverse bulkhead sections is completed, use the 150M.K midship joint as a reference to draw a 150M.K baseline on the transverse bulkhead sections. Figure 1 As shown; the rib line perpendicular to the 150M.K baseline on section 2 of the transverse bulkhead is taken as the rib reference line;

[0029] Step 2: Based on the theoretical position data of locating pin 1, obtain the planar position of the locating pin using the 150M.K baseline and the rib baseline; measure and determine the height position of the locating pin using the hatch coaming as a reference.

[0030] The distance error between the locating pin and the 150M.K baseline, as well as the distance error between the locating pin and the rib baseline, are both controlled within ±2mm. The verticality of the locating pin must be ensured during the welding process. A multi-segment symmetrical welding method is considered to prevent deformation during the welding process.

[0031] If there are at least two locating pins on the same transverse bulkhead section, the first locating pin obtains its planar position based on the theoretical position data of the locating pin using the 150M.K baseline and the rib baseline. The planar positions of the remaining locating pins are then positioned with the first locating pin as the reference, ensuring that the distance deviation between the centers of two adjacent locating pins is controlled within ±2mm.

[0032] Step 3: Assemble the transverse bulkhead sections using the 150M.K baseline as a reference, such as... Figure 2 As shown; to prevent welding deformation of the overall assembly seam 3, a certain amount of anti-deformation welding material can be appropriately added in the area of ​​the seam 3. It is crucial to ensure the distance between the locating pins between the seams 3, and the accuracy of the seam 3 at the closure point should be controlled within ±3mm.

[0033] Step 4: After the accuracy of each individual hatch cover is qualified, perform a simulated assembly of the hatch covers, such as... Figure 3As shown; adjust the distance between the positioning pin holes 5 of the single hatch cover based on the actual distance between the positioning pins; adjust the gap between the single hatch covers 4 to the standard gap by adjusting the cutting allowance. The gap between the single hatch covers is 30±2mm, and the temperature during measurement is below 30℃. After simulating the overall assembly position adjustment, make a 150mm reference punch mark 150.MK between the hatch covers 4, and set a height reference punch mark in the height direction of the hatch covers for subsequent reference when installing the hatch covers on the ship. After marking all the container lines on the hatch covers, start installing the container accessories, and check whether the accessories are arranged on the designed structural components or reinforcing members.

[0034] Step 5: Install the positioning pins in stages. The positioning pins specified in Steps 1-4 are the positions of the positioning pins. The hatch cover positioning is directly installed according to the position of the positioning pin. The positioning pin hole 5 of the hatch cover 4 corresponds one-to-one with the positioning pin 1. The positioning pin 1 is inserted into the positioning pin hole 5. Adjust the gap of the hatch cover 4 and control it within 30±5mm.

[0035] This embodiment is merely a further explanation of the present invention and is not intended to limit the present invention. Those skilled in the art can make non-inventive modifications to this embodiment as needed after reading this specification, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A method for precision control of locating pin installation in sections of a container ship, used to install locating pins during the sectioning stage, comprising the following steps: Step 1: After the accuracy inspection of the transverse bulkhead section is completed, draw the 150M.K baseline on the transverse bulkhead section with the midships seam 150M.K as the reference; use the rib line on the transverse bulkhead section that is perpendicular to the 150M.K baseline as the rib reference line. Step 2: Based on the theoretical position data of the locating pin, obtain the planar position of the locating pin using the 150M.K baseline and the rib baseline; use the hatch coaming as a reference to measure and determine the height position of the locating pin. If there are at least two locating pins on the same transverse bulkhead section, obtain the planar position of the first locating pin based on the theoretical position data of the locating pin using the 150M.K baseline and the rib baseline. The planar position of the remaining locating pins is located using the first locating pin as a reference. The positioning accuracy of the locating pin is controlled within ±2mm. Step 3: Using the 150M.K baseline as a reference, perform the overall assembly of the transverse bulkhead sections. When assembling the transverse bulkhead sections, the distance between the positioning pins between the closing seams should be controlled within ±3mm. Step 4: After the accuracy of each individual hatch cover is qualified, perform a simulated assembly of the hatch covers, and adjust the distance between the positioning pin holes of each individual hatch cover based on the actual distance between the positioning pins. The gap between individual hatch covers is adjusted to the standard gap by adjusting the cutting allowance. When simulating the assembly of the hatch covers, the gap between individual hatch covers is 30±2mm, and the temperature during measurement is below 30℃. Step 5: Install the locating pins in stages. The hatch cover is installed directly according to the position of the locating pin, and the gap between the hatch covers is controlled within 30±5mm.

2. A container ship, characterized in that, The container ship is constructed according to the method described in claim 1.

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