Networked arrangement method for ship block construction datum line

Abstract

The invention discloses a networked arrangement method for ship block construction datum lines, and relates to the technical field of ship block construction, which comprises the following steps: S1, part preparation: setting datum lines in vertical, longitudinal and transverse directions through specific analysis of a block structure form, and spraying powder and marking the datum lines in place on all structural parts in a blanking stage, wherein the datum line is divided into a cross section line, a longitudinal section line and a horizontal section line, specific datum lines are set at the longitudinal latitude, the transverse latitude and the vertical latitude of the subsection respectively, grid systems are formed on the subsection structure and distributed on the surfaces of all parts, and the subsection construction datum is controlled according to the grid lines. According to the networked arrangement method for the ship block building datum line, through brand-new arrangement of the block building datum line and brand-new control requirements in the building process, the block building precision is controllable, the block building precision meets the requirements, and the requirements for whole ship block allowance-free building, allowance repairing and cutting reduction and slipway carrying period shortening are met.

Description

Technical Field

[0001] The invention relates to the technical field of ship segment construction, and in particular to a networked arrangement method of ship segment construction reference lines. Background Art

[0002] The ship block construction baseline is an important reference line used for positioning, measurement and correction during the ship block manufacturing process. It provides an accurate benchmark for the assembly, welding and other processing of the block, ensuring that the relative position between the blocks meets the design requirements, thereby ensuring the construction accuracy of the entire ship.

[0003] However, the traditional ship segment construction takes the strong structure such as ribs or platforms as the benchmark for segment construction. Due to the influence of different segment forms, different assembly sequences, different welding sequences, different welding shrinkage, etc., the actual segment completion accuracy is uncontrolled. By setting a new construction baseline, the traditional segment construction method is changed to solve the problem of poor accuracy after segment construction is completed. Summary of the invention

[0004] The object of the present invention is to provide a networked arrangement method for ship block construction reference lines to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a networked arrangement method for a ship block construction baseline, the ship block construction baseline operation method comprising the following steps:

[0006] S1. Parts preparation: Through the specific analysis of the segmented structure, the vertical, longitudinal and transverse reference lines are set, and the reference lines are powder-sprayed and marked on all structural parts during the blanking stage. The reference lines are divided into transverse section lines, longitudinal section lines and waterline section lines, and form a grid system distributed on the surface of each component;

[0007] S2. Hull construction in sections:

[0008] S21. Main body construction: Assemble and weld the hull panels, webs, channel walls and main steel sections according to the positioning reference lines marked with powder spraying in advance. At the same time, ensure that all reference lines are aligned during the splicing process so that the positions of other components can be more accurate during installation;

[0009] S22, component installation: the prefabricated components are preliminarily positioned and installed according to the positions set in the drawings, and are precisely adjusted according to the positioning reference lines on the adjacent structures. After the components are installed, it is necessary to ensure that the reference lines in all directions are aligned together to achieve the purpose of precise positioning and installation. If there is a misalignment of the reference lines in a certain direction, it means that there is a problem with the installation position of the component, and the cause needs to be found out before the next step of operation;

[0010] S23. Installation of Iron and Pipe Outfittings: The installation and positioning bases of all pre-prepared iron and pipe outfittings on the sub-assembly are positioned and installed based on the reference line.

[0011] S3. Construction of Hull Sub-assemblies:

[0012] S31. Positioning Stage: According to the positioning reference for overall assembly and mating, each sub-assembly is assembled in the vertical, longitudinal, and transverse directions, and the components installed on the sub-assembly are positioned and assembled based on the reference line to form the sub-assembly.

[0013] S32. Completion Stage of Sub-assembly: After each sub-assembly is successively butted and assembled, welding operations for the sub-assembly are carried out. After welding, precision measurement of the dimensions of the sub-assembly is performed to ensure that the external dimensions of the sub-assembly meet the precision standards, and non-margin mating can be carried out during the shipbuilding berth mating stage.

[0014] Furthermore, in step S1, a transverse circumferential seam profile line needs to be set at each sub-assembly joint. The position is selected 100 mm away from the clean end joint. CNC powder spraying is set on the main board and strong structures. The alignment lines on the sections are manually marked. At least 2 transverse circumferential seam profile lines are set inside the sub-assembly according to the structural form.

[0015] Furthermore, in step S1, 1 - 3 longitudinal circumferential seam profile lines need to be set for the longitudinal profile line and waterline according to different sub-assembly types. For the bottom sub-assembly, longitudinal profile lines need to be set at 100 mm from the centerline on the starboard side and 7220 mm from the centerline, a total of 3 lines. At the same time, a horizontal circumferential seam profile line is set at 1000 mm from the baseline. Powder spraying lines are set on the main board and structural plates.

[0016] Furthermore, for the bottom side tank sub-assembly, a longitudinal circumferential seam profile line needs to be set at 7420 mm from the centerline and 15000 mm from the centerline respectively. Three horizontal circumferential seam profile lines are set at 1000 mm, 2000 mm, and 7610 mm from the baseline. Powder spraying lines are set on the main board and structural plates.

[0017] Furthermore, for the top side tank sub-assembly, a longitudinal circumferential seam profile line needs to be set at 85000 mm from the centerline and 15000 mm from the centerline respectively. Two horizontal circumferential seam profile lines are set at 7810 mm and 19800 mm from the baseline. Powder spraying lines are set on the main board and T-sections.

[0018] Furthermore, for the engine room sub-assembly, a longitudinal circumferential seam profile line needs to be set at 100 mm from the centerline and 13000 mm from the centerline respectively. A horizontal circumferential seam profile line is set at 6100 mm from the baseline. Powder spraying lines are set on the main board and T-sections.

[0019] Further, in step S21, after the hull panel, web, trough-shaped wall, and main section steel are all spliced and welded, the accuracy measurement of the sectional main dimensions needs to be carried out. Only when the sectional external dimensions meet the accuracy standards can the construction work of the next section be carried out to ensure the non-margin assembly of the sections in the subsequent overall section assembly stage.

[0020] Further, in step S23, when installing the iron outfitting parts and pipe outfitting parts, the positioning dimensions are installed and positioned according to the grid baseline, so as to improve the installation accuracy of the iron outfitting parts and pipe outfitting parts. At the same time, it also ensures that the installation positions of the iron outfitting parts and pipe outfitting parts are not affected by the shrinkage deformation during the sectional welding operation. Finally, it ensures that the iron outfitting parts and pipe outfitting parts on each section can be docked at the overall section stage, and the on-site fabricated pipe outfitting parts are cancelled.

[0021] The present invention provides a method for network layout of the baseline for ship section construction, which has the following beneficial effects:

[0022] 1. Through the new setting of the sectional construction baseline and the new control requirements during the construction process, the controllability of the sectional construction accuracy is achieved, so that the sectional construction accuracy meets the requirements, satisfying the non-margin construction of the whole ship sections, reducing the margin trimming, shortening the shipbuilding berth berthing period, and effectively ensuring that each section can be aligned and spliced at one time during the overall section assembly, thus providing convenience for the subsequent welding work of the staff and the docking and fixing of the iron outfitting parts and pipe outfitting parts.

[0023] 2. Through the construction method of first constructing sections and then overall sections, when the staff assembles the hull and installs components, iron outfitting parts, and pipe outfitting parts through the baseline, each component can be more accurately installed at the preset position, thus greatly improving the installation accuracy of each component after the sectional construction is completed. At the same time, during the overall section installation, it can also ensure that the iron outfitting parts and pipe outfitting parts between each section can be accurately docked, thus greatly improving the hull assembly speed of the staff and avoiding the situation that the iron outfitting parts and pipe outfitting parts cannot be perfectly docked and need to be adjusted secondly when the sections are docked. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the shipbuilding construction process flow of a method for network layout of the baseline for ship section construction of the present invention;

[0025] Figure 2 It is a schematic diagram of the 82000DWT hull baseline marking structure of a method for network layout of the baseline for ship section construction of the present invention;

[0026] Figure 3 It is a setting table of the 82000DWT whole ship baseline of a method for network layout of the baseline for ship section construction of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0027] The following further describes in detail the implementation manners of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0028] As Figures 1 - 3 shown, a network layout method for the reference lines of ship block construction, and the operation method of the reference lines of ship block construction includes the following steps:

[0029] S1. Component preparation: Through specific analysis of the block structure form, reference lines in the vertical, longitudinal, and transverse directions are set, and the reference lines are marked with powder spraying at the blanking stage on all structural parts. Among them, the reference lines are divided into transverse section lines, longitudinal section lines, and waterline section lines, and form a grid system distributed on the surfaces of each component. In step S1, a transverse circumferential seam section line needs to be set at each block joint, and the position is selected 100 mm away from the clean end joint. Moreover, numerical control powder spraying is set for the main board and strong structures, and the alignment lines on the profiles are manually drawn. At the same time, at least 2 transverse circumferential seam section lines are set inside the block according to the structure form. In step S1, the longitudinal section lines and waterlines need to set 1 - 3 longitudinal circumferential seam section lines according to different block types. For the bottom block, longitudinal section lines need to be set at 100 mm from the center line on the starboard side and 7220 from the center line respectively, with a total of 3 lines. At the same time, a horizontal circumferential seam section line is set at 1000 from the baseline. Powder spraying lines are set on the main board and structural plates. For the bottom side tank block, longitudinal circumferential seam section lines need to be set at 7420 from the center line and 15000 from the center line respectively, and three horizontal circumferential seam section lines are set at 1000, 2000, and 7610 from the baseline. Moreover, powder spraying lines are required to be set on the main board and structural plates. For the top side tank block, longitudinal circumferential seam section lines need to be set at 85000 and 15000 from the center line respectively, and two horizontal circumferential seam section lines are set at 7810 and 19800 from the baseline. Moreover, powder spraying lines are required to be set on the main board and T-shaped profiles. For the engine room block, longitudinal circumferential seam section lines need to be set at 100 and 13000 from the center line respectively, and a horizontal circumferential seam section line is set at 6100 from the baseline. Powder spraying lines are set on the main board and T-shaped profiles. The setting of the brand-new reference lines for block construction and the brand-new control requirements during the construction process achieve the controllability of block construction accuracy, enabling the block construction accuracy to meet the requirements, satisfying the non-allowance construction of the whole ship blocks, reducing the allowance trimming, shortening the shipyard erection cycle, and when the staff establish the reference lines, precision measuring equipment such as laser rangefinders and total stations need to be used to ensure the accuracy of the reference lines;

[0030] S2. Hull block construction:

[0031] S21, main body construction: assemble and weld the hull panels, webs, groove walls and main steel sections according to the positioning reference lines marked by pre-powder spraying, and ensure that all the reference lines are aligned during the splicing process, so that the positions of other components can be more accurate during subsequent installation. In step S21, after the hull panels, webs, groove walls and main steel sections are spliced and welded, it is necessary to accurately measure the main dimensions of the sections. Only when the external dimensions of the sections meet the accuracy standards can the next step of section construction be carried out to ensure that the sections are assembled without excess in the subsequent total section assembly stage. After the section construction is completed, the welding points are carefully inspected to ensure that the welding of each connection meets the water entry standard.

[0032] S22, component installation: the prefabricated components are preliminarily positioned and installed according to the positions set in the drawings, and are precisely adjusted according to the positioning reference lines on the adjacent structures. After the components are installed, it is necessary to ensure that the reference lines in all directions are aligned together to achieve the purpose of precise positioning and installation. If there is a misalignment of the reference lines in a certain direction, it means that there is a problem with the installation position of the component, and the cause needs to be found out before the next step of operation;

[0033] S23, installation of iron outfitting and pipe outfitting: All pre-prepared iron outfitting and pipe outfitting installation and positioning foundations on the sections are positioned and installed based on the reference line. In step S23, the positioning dimensions of the iron outfitting and pipe outfitting are installed and positioned according to the grid reference line during installation, so as to improve the installation accuracy of the iron outfitting and pipe outfitting, and also ensure that the installation positions of the iron outfitting and pipe outfitting are not affected by the shrinkage deformation during the section welding operation, and finally ensure that the iron outfitting and pipe outfitting on each section can be docked at the general section stage, and the existing pipe outfitting parts are cancelled, thereby ensuring that the iron outfitting and pipe outfitting in each section can be accurately docked when the subsequent sections are docked;

[0034] S3. Hull section construction:

[0035] S31, positioning stage: according to the positioning reference of the overall assembly, each segment is aligned and assembled in the vertical, longitudinal and transverse directions, and the components installed in the overall segment are positioned and assembled according to the reference line, so as to form the overall segment;

[0036] S32, the stage of completion of the overall section: when all the sections are connected and assembled in sequence, the overall section welding operation is carried out, and after welding, the overall section dimensions are accurately measured to ensure that the overall dimensions of the overall section meet the accuracy standards and can be carried out without any margin during the stage of loading on the slipway.

[0037] The embodiments of the present invention are provided by way of example and description, and are not exhaustive or limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles of the present invention and its practical application, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A network layout method for the reference line of ship block construction, characterized in that, The ship block construction baseline operation method comprises the following steps: S1. Parts preparation: Through the specific analysis of the segmented structure, the vertical, longitudinal and transverse reference lines are set, and the reference lines are powder-sprayed and marked on all structural parts during the blanking stage. The reference lines are divided into transverse section lines, longitudinal section lines and waterline section lines, and form a grid system distributed on the surface of each component; S2. Hull construction in sections: S21. Main body construction: Assemble and weld the hull panels, webs, channel walls and main steel sections according to the positioning reference lines marked with powder spraying in advance. At the same time, ensure that all reference lines are aligned during the splicing process so that the positions of other components can be more accurate during installation; S22, component installation: the prefabricated components are preliminarily positioned and installed according to the positions set in the drawings, and are precisely adjusted according to the positioning reference lines on the adjacent structures. After the components are installed, it is necessary to ensure that the reference lines in all directions are aligned together to achieve the purpose of precise positioning and installation. If there is a misalignment of the reference lines in a certain direction, it means that there is a problem with the installation position of the component, and the cause needs to be found out before the next step of operation; S23, iron outfitting, pipe outfitting installation: all pre-prepared iron outfitting, pipe outfitting installation positioning foundations on the block are positioned and installed based on the reference line; S3. Hull section construction: S31, positioning stage: according to the positioning reference of the overall assembly, each segment is aligned and assembled in the vertical, longitudinal and transverse directions, and the components installed in the overall segment are positioned and assembled according to the reference line, so as to form the overall segment; S32, the stage of completion of the overall section: when all the sections are connected and assembled in sequence, the overall section welding operation is carried out, and after welding, the overall section dimensions are accurately measured to ensure that the overall dimensions of the overall section meet the accuracy standards and can be carried out without any margin during the stage of loading on the slipway.

2. The network layout method of the reference line for ship block construction according to claim 1, characterized in that In step S1, the transverse section line needs to be set with a transverse circumferential seam section line on each segment closing mouth, and the position is selected to be 100 mm away from the clean end closing mouth, and the main board and the strong structure are set with CNC powder spraying, and the matching line on the steel section is drawn manually, and at least 2 transverse circumferential seam section lines are set inside the segment according to the structural form.

3. A network layout method for the baseline of ship section construction according to claim 1, characterized in that In step S1, the longitudinal section line and the waterline need to be set with 1 to 3 longitudinal circumferential seam section lines according to the different segment types. The bottom segment needs to be set with longitudinal section lines at 100 mm from the center and 7220 from the center on the port side, for a total of 3 lines. At the same time, a horizontal circumferential seam section line is set at 1000 from the baseline, and powder spraying lines are set on the main board and the structural plate.

4. A network layout method for the reference line of ship section construction according to claim 3, characterized in that The hopper tank sections need to be set with a longitudinal circumferential seam section line at 7420 and 15000 from the center, and three horizontal circumferential seam section lines at 1000, 2000 and 7610 from the baseline, and powder spray lines need to be set on the main board and structural plates.

5. A network layout method for the baseline of ship section construction according to claim 3, characterized in that, The topside tank section needs to be set with a longitudinal circumferential seam section line at 85000 and 15000 from the center, and two horizontal circumferential seam section lines at 7810 and 19800 from the baseline, and powder spray lines need to be set on the main board and T-profile.

6. A network layout method for the baseline of ship section construction according to claim 3, characterized in that The engine room section needs to be set with a longitudinal circumferential seam profile line at 100 and 13000 from the center respectively, and a horizontal circumferential seam profile line at 6100 from the baseline. Powder spraying lines are set on the main board and T-shaped profiles.

7. A network layout method for the reference line of ship section construction according to claim 1, characterized in that In step S21, after the hull panels, webs, trough-shaped walls and main section steel are all spliced and welded, the accuracy of the section main dimensions needs to be measured. Only when the external dimensions of the section meet the accuracy standards can the construction work of the next section be carried out to ensure the non-margin assembly of the section in the subsequent overall section assembly stage.

8. A network layout method for the reference line of ship block construction according to claim 1, characterized in that, In step S23, when installing the iron outfitting parts and pipe outfitting parts, the positioning dimensions are installed and positioned according to the grid reference line, so as to improve the installation accuracy of the iron outfitting parts and pipe outfitting parts. At the same time, it also ensures that the installation positions of the iron outfitting parts and pipe outfitting parts are not affected by the shrinkage deformation during the section welding operation. Finally, it is ensured that the iron outfitting parts and pipe outfitting parts on each section can be butt-jointed in the overall section stage, and the existing pipe outfitting parts are cancelled.

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