Bulk cargo ship main board seam dividing method

Abstract

The invention relates to the technical field of ship manufacturing, and provides a bulk cargo ship main board seam dividing method which comprises the steps that a plurality of segments are formed in the length direction of a ship body, and the length value L of each segment does not exceed a board length threshold value; plate joint division is carried out on each section according to the following steps that one side of the central axis of the ship body is deviated by a distance a, and a reference section joint is arranged; the reference segmentation seam is deviated towards the other side by a distance c, and a reference plate seam is arranged; a central plate is formed therebetween; respectively offsetting a distance b towards the corresponding sides by taking the reference plate seam and the reference segmentation seam as reference lines, and arranging a transverse plate seam to form a material plate; taking the transverse plate seam of the previous material plate as a reference line, and continuously deviating towards the corresponding side by a distance b to form a rear material plate; and repeating to form a plurality of material plates. Therefore, according to the invention, based on the size of the purchased plate, the plate seam division is carried out on each section. And the divided center plate and the material plate are uniform in size, so that the management cost and the purchase cost are reduced. Meanwhile, follow-up production can be standardized conveniently, and production efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of shipbuilding, and particularly relates to a method for dividing the main board seams of a bulk carrier. Background Art

[0002] The manufacturing method of a bulk carrier is usually to divide the whole ship into multiple sections according to the design dimensions of the whole ship, and finally assemble them to form the overall hull.

[0003] Currently, the designers of each section freely design the seam positions of each section, resulting in different splicing methods of the plates in different sections, and thus the plate size specifications vary greatly. Due to the inconsistent seam design of each section, finally there are many plate specifications, which is not conducive to transportation and management, and also increases the procurement cost.

[0004] In summary, it is obvious that the existing technology has inconveniences and defects in actual use, so it is necessary to improve it. Summary of the Invention

[0005] Aiming at the above defects, the present invention mainly provides a method for dividing the main board seams of a bulk carrier to solve the technical problems of inconsistent seam design, resulting in increased management and procurement costs.

[0006] To solve the above problems, the present invention provides a method for dividing the main board seams of a bulk carrier, including: forming a plurality of sections along the length direction of the hull, and the length value L of each section does not exceed the plate length threshold; dividing the seams of each section according to the following steps:

[0007] S1, offset the central axis of the hull by a distance a to one side to set a reference section seam;

[0008] S2, offset the reference section seam by a distance c to the other side to set a reference plate seam; the reference plate seam and the reference section seam are respectively located on both sides of the central axis; a central plate is formed between the reference plate seam and the reference section seam; the value of the distance c does not exceed the plate width threshold;

[0009] S3, taking the reference plate seam and the reference section seam as reference lines, offset by a distance b to the corresponding side respectively to set transverse seams, forming a blank plate; the value of the distance b does not exceed the plate width threshold;

[0010] S4, taking the transverse seam of the previous blank plate as the reference line, continue to offset by a distance b to the corresponding side to form a subsequent blank plate;

[0011] S5, repeat step S4 to form multiple blank plates until the width of the outermost blank plate ≤ b, and complete the seam division.

[0012] According to the method for dividing the main board seams of a bulk carrier of the present invention, the plate length threshold does not exceed 19980 mm, and the plate width threshold does not exceed 3980 mm.

[0013] According to the method for dividing the main board seams of a bulk carrier of the present invention, when the distance a in the step S1 ≥ 1200 mm, the reference board seam in the step S2 and the reference sectional seam are symmetrically arranged on both sides of the central axis.

[0014] According to the method for dividing the main board seams of a bulk carrier of the present invention, when the side edge of the outermost side stock plate is an inclined edge, the minimum width value δ of this stock plate ≥ 100 mm.

[0015] According to the method for dividing the main board seams of a bulk carrier of the present invention, when the inclination angle α of the side edge of the outermost side stock plate > 20°, a plurality of transverse board seams are arranged on this stock plate to divide the stock plate into multiple sub-stock plates, and the maximum width of each sub-stock plate does not exceed the board width threshold.

[0016] According to the method for dividing the main board seams of a bulk carrier of the present invention, the maximum width value of the outermost side stock plate is d. According to the value of d, a plurality of transverse board seams are arranged to divide the stock plate into multiple sub-stock plates; the maximum width e of each sub-stock plate is equal, and the value of e does not exceed the board width threshold.

[0017] According to the method for dividing the main board seams of a bulk carrier of the present invention, when the inclination angle α of the side edge of the outermost side stock plate ≤ 20°, a longitudinal board seam and a transverse board seam are arranged on this stock plate, and the two board seams divide the stock plate into two trapezoidal plates and one rectangular plate;

[0018] The minimum width value δ of the trapezoidal plate ≥ 100 mm, and the maximum width value h does not exceed the board width threshold; the width value b of the rectangular plate does not exceed the board width threshold.

[0019] According to the method for dividing the main board seams of a bulk carrier of the present invention, the longitudinal board seam is arranged at the middle part of the outermost side stock plate.

[0020] In summary, based on the size of the purchased plates, the present invention divides the seams of each section. The sizes of the central plates and stock plates formed after division are unified, which is beneficial for storage and transportation, reduces management costs, enables batch procurement, and reduces procurement costs. At the same time, the division methods of each section are the same, which is convenient for standardizing the operations in the hull production process and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the principle of the present invention;

[0022] Figure 2 is Figure 1 a schematic structural diagram of an embodiment of the central plate in

[0023] Figure 3 is Figure 1 a schematic structural diagram of an embodiment of area A in

[0024] Figure 4 is Figure 1 a schematic structural diagram of an embodiment of area A in the

[0025] In the figure: 1 - central axis, 11 - central plate, 12 - reference plate seam; 2 - reference segmented seam, 3 - transverse plate seam, 4 - material plate, 41 - trapezoidal plate, 42 - rectangular plate; 5 - longitudinal plate seam. Specific implementation manner

[0026] Refer to Figure 1 , the present invention provides a method for dividing the main board seams of a bulk carrier, including: forming a plurality of segments along the length direction of the hull, and the length value L of each segment does not exceed the plate length threshold; dividing the seams of each segment according to the following steps:

[0027] S1, offset the central axis 1 of the hull by a distance a to one side, and set the reference segmented seam 2;

[0028] S2, in combination with Figure 2 , offset the reference segmented seam 2 by a distance c to the other side, and set the reference plate seam 12; the reference plate seam 12 and the reference segmented seam 2 are respectively located on both sides of the central axis 1; the value of the distance c does not exceed the plate width threshold; a central plate 11 is formed between the reference plate seam 12 and the reference segmented seam 2;

[0029] The plate length threshold and the plate width threshold of the present invention can be set according to the production capacity of the plate manufacturer. Optionally, the setting basis is the conventional products of the plate manufacturer in order to reduce the procurement cost. For example: the length of the plate product is 20000 mm and the width is 4000 mm. Considering that the plate needs to be cut and processed before use, therefore, the plate length threshold and the plate width threshold of the present invention can be set by excluding the cutting amount during processing on the basis of the length and width values of the plate product.

[0030] As an embodiment, the plate length threshold of the present invention does not exceed 19980 mm, for example, it can be 19980, 19970, 19960, 19950 or 19940 mm, etc.; the plate width threshold does not exceed 3980 mm, for example, it can be 3980, 3970 or 3960 mm, etc.

[0031] S3, taking the reference plate seam 12 and the reference segmented seam 2 as reference lines, offset by a distance b to the corresponding side respectively, and set the transverse plate seam 3 to form a material plate 4; the value of the distance b does not exceed the plate width threshold;

[0032] S4, taking the transverse plate seam 3 of the previous material plate 4 as the reference line, continue to offset by a distance b to the corresponding side to form the subsequent material plate 4;

[0033] Repeat step S4 for S5 to form multiple stock plates 4 until the width of the outermost stock plate 4 ≤ b, completing the division of the plate seams.

[0034] After that, summarize the dimensional data of the center plate 11 and each stock plate 4 for unified procurement.

[0035] See Figure 2 , for the convenience of unifying the dimensions of the plates, as an embodiment, when the distance a in step S1 ≥ 1200 mm, the reference plate seam 12 in step S2 and the reference segmentation seam 2 are symmetrically arranged on both sides of the central axis 1; the width of the formed center plate 11 is between 2400 mm and 3980 mm, which is convenient for combining with other stock plates 4 into the same specification for procurement.

[0036] Based on the dimensions of the purchased plates, the present invention divides the plate seams for each segment. The dimensions of the formed center plate 11 and the stock plates 4 are unified, which is beneficial for storage and transportation, reduces management costs, enables batch procurement, and reduces procurement costs. At the same time, the division methods of each segment are the same, which is convenient for standardizing the operations in the hull production process and improving production efficiency.

[0037] As an implementation method, when setting the transverse plate seams 3, the values of the width b of each stock plate 4 can be different to avoid the component lines for installing other components and prevent multiple overlapping welds from being formed at the position of the transverse plate seams 3 during subsequent assembly.

[0038] As an embodiment, when the side of the outermost stock plate 4 is an inclined line, the minimum width value δ of this stock plate 4 ≥ 100 mm; to avoid cross welds from being formed at the narrow part of this stock plate 4 when each segment is joined together, resulting in stress concentration.

[0039] See Figure 3 , as an embodiment, when the inclination angle α of the side of the outermost stock plate 4 > 20°, multiple transverse plate seams 3 are set on this stock plate 4 to divide this stock plate 4 into multiple sub-stock plates, and the maximum width of each sub-stock plate does not exceed the plate width threshold.

[0040] Furthermore, for the convenience of specification unification, the maximum width value of the outermost stock plate 4 is d. According to the value of d, multiple transverse plate seams 3 are set to divide this stock plate 4 into multiple sub-stock plates, and the maximum width e of each sub-stock plate is equal; the value e of the present invention does not exceed the plate width threshold.

[0041] For example, the plate width threshold is 3980 mm and d is 15900 mm. The stock plate 4 is divided into four sub-stock plates, and the maximum width e of each sub-stock plate is 3975 mm. The outermost stock plate can be combined with other stock plates 4 for procurement in the same specification and then cut and processed into the required size. Although the cutting amount increases slightly, the widths of the sub-stock plates are the same, which is convenient for processing. At the same time, the procurement specification is unified, reducing the cost in the procurement process.

[0042] When cutting and processing the sharp corner part, the angle needs to be changed; when the angle of the sharp corner part is too small, it is not conducive to processing and forming. Refer to Figure 4 , as an embodiment, when the inclination angle α of the side of the outermost stock plate 4 is ≤ 20°, a longitudinal plate seam 5 and a transverse plate seam 3 are arranged on the stock plate 4. The two plate seams divide the stock plate 4 into two trapezoidal plates 41 and a rectangular plate 42. The minimum width value δ of the trapezoidal plate 41 ≥ 100 mm, and the maximum width value h does not exceed the plate width threshold. The width value b of the rectangular plate 42 does not exceed the plate width threshold.

[0043] Furthermore, the longitudinal plate seam 5 is arranged in the middle part of the outermost stock plate 4. The two formed trapezoidal plates 41 have the same size, which is convenient for subsequent processing and assembly operations.

[0044] In summary, the present invention provides a method for dividing the plate seams of the main board of a bulk carrier. Based on the size of the purchased plates, the plate seams of each section are divided. After division, the sizes of the center plate and the stock plates are unified, which is beneficial to storage and transportation, reduces management costs, enables batch procurement, and reduces procurement costs. At the same time, the division methods of each section are the same, which is convenient for standardizing the operations in the hull production process and improving production efficiency.

[0045] Of course, the present invention can also have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present invention.

Claims

1. A method for dividing the main board seams of a bulk carrier, characterized in that Including: Form multiple segments along the length direction of the hull, and the length value L of each segment does not exceed the plate length threshold; the plate seams of each segment are divided according to the following steps: S1. Offset the central axis of the hull by a distance a to one side to set a reference segment seam; S2. Offset the reference segment seam by a distance c to the other side to set a reference plate seam; The reference plate seam and the reference segment seam are respectively located on both sides of the central axis; A central plate is formed between the reference plate seam and the reference segment seam; the value of the distance c does not exceed the plate width threshold; S3. Taking the reference plate seam and the reference segment seam as reference lines, offset by a distance b to the corresponding side respectively to set transverse plate seams, forming a blank plate; the value of the distance b does not exceed the plate width threshold; S4. Taking the transverse plate seam of the previous blank plate as the reference line, continue to offset by a distance b to the corresponding side to form the subsequent blank plate; S5. Repeat step S4 to form multiple blank plates until the width of the outermost blank plate ≤ b, and complete the division of the plate seams.

2. The method for dividing the main board seams of a bulk carrier according to claim 1, wherein The plate length threshold does not exceed 19980 mm, and the plate width threshold does not exceed 3980 mm.

3. The method for dividing the main board seams of a bulk carrier according to claim 2, wherein When the distance a in step S1 ≥ 1200 mm, the reference plate seam and the reference segment seam in step S2 are symmetrically arranged on both sides of the central axis.

4. The method for dividing the main board seams of a bulk carrier according to any one of claims 1 to 3, characterized in that, When the side of the outermost blank plate is an inclined side, the minimum width value δ of this blank plate ≥ 100 mm.

5. The method for dividing the main board seams of a bulk carrier according to claim 4, characterized in that, When the inclination angle α of the side of the outermost blank plate > 20°, set multiple transverse plate seams on this blank plate to divide this blank plate into multiple sub-blank plates, and the maximum width of each sub-blank plate does not exceed the plate width threshold.

6. The method for dividing the main board seams of a bulk carrier according to claim 5, characterized in that The maximum width value of the outermost blank plate is d, and according to the value of d, set multiple transverse plate seams to divide this blank plate into multiple sub-blank plates; the maximum width e of each sub-blank plate is equal, and the value of e does not exceed the plate width threshold.

7. The method for dividing the main board seams of a bulk carrier according to claim 4, wherein When the inclination angle α of the side of the outermost blank plate ≤ 20°, set a longitudinal plate seam and a transverse plate seam on this blank plate, and the two plate seams divide the blank plate into two trapezoidal plates and a rectangular plate; The minimum width value δ of the trapezoidal plate ≥ 100 mm, and the maximum width value h does not exceed the plate width threshold; the width value b of the rectangular plate does not exceed the plate width threshold.

8. The method for dividing the main board seams of a bulk carrier according to claim 7, wherein, The longitudinal plate seam is arranged in the middle part of the outermost blank plate.

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