A method for ship assembly compensation and expansion

Abstract

This invention provides a method for compensating for the installation of elbows in ship assembly. The method comprises the following steps: S1: Welding multiple reinforcing ribs sequentially and at intervals onto a base plate; S2: Removing welding stress between the reinforcing ribs and the base plate by adjusting the heat; S3: Installing an elbow plate between two adjacent reinforcing ribs, wherein the left weld between the left side wall of the elbow plate and the left reinforcing rib is spaced at a predetermined distance, and the left end of the elbow plate is fixed by spot welding; the right weld between the right side wall of the elbow plate and the right reinforcing rib is also spaced at a predetermined distance, and the right end of the elbow plate is fixed by spot welding; S4: Welding the left weld between the left side wall of the elbow plate and the left reinforcing rib; S5: Welding the right weld between the right side wall of the elbow plate and the right reinforcing rib. This invention adds a negative compensation value to this embedded structure of elbow plates installed between adjacent reinforcing ribs, reducing the size of the elbow plate structure, facilitating embedded installation, avoiding cutting, and improving assembly efficiency.

Description

Technical Field

[0001] This invention belongs to the field of ship assembly technology, and specifically relates to a ship assembly compensation and placement method. Background Technology

[0002] During shipbuilding, structural assembly, and riveting / welding processes, variations in the shape or size of welded components can occur due to factors such as welding techniques, material properties, and structural design. These deformations can take various forms, including shortening, angle changes, and bending, significantly impacting the installation accuracy and load-bearing capacity of the structure. The causes of riveting / welding deformation primarily include the effects of uneven temperature fields during welding, the presence of residual stress, and factors such as welding sequence and poor assembly. The hazards of riveting / welding deformation include reduced assembly quality, impacted appearance quality, reduced load-bearing capacity, and potential increased straightening procedures, thereby raising manufacturing costs. Riveting / welding deformation is a common problem in the welding process and has a significant impact on product quality and structural safety.

[0003] How to reduce welding deformation is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] This invention provides a method for ship assembly compensation and placement:

[0005] S1: Multiple reinforcing ribs are sequentially and alternately welded onto the base plate;

[0006] S2: By adjusting the heat, the welding stress between the reinforcing rib plate and the substrate is removed;

[0007] S3: Install an elbow plate between two adjacent reinforcing ribs, with the left weld between the left side wall of the elbow plate and the left reinforcing rib plate spaced at a predetermined distance, and fix the left end of the elbow plate by spot welding; the right weld between the right side wall of the elbow plate and the right reinforcing rib plate spaced at a predetermined distance, and fix the right end of the elbow plate by spot welding.

[0008] S4: Weld the left weld between the left side wall of the elbow plate and the left side reinforcing rib plate;

[0009] S5: Weld the right weld between the right side wall of the elbow plate and the right side reinforcing rib plate.

[0010] Furthermore, it also includes:

[0011] S6: The predetermined distance between the bottom weld seam of the elbow plate and the base plate;

[0012] S7: Bottom weld between the bottom sidewall of the welding elbow plate and the substrate.

[0013] Furthermore, it also includes:

[0014] S8: By adjusting the heat, the welding stress between the elbow plate and the base plate, the left reinforcing rib plate, and the right reinforcing rib plate is removed.

[0015] Furthermore, in S2, the heat adjustment is to release the welding stress between the reinforcing rib and the substrate by adjusting the heat treatment on the back of the substrate.

[0016] Furthermore, in S8, the heat adjustment is achieved by adjusting the heat treatment on the back of the substrate to release and remove the welding stress between the elbow plate and the substrate, the left reinforcing rib plate, and the right reinforcing rib plate.

[0017] Furthermore: In S3, the predetermined distance between the left weld seam of the left side wall of the elbow plate and the left side stiffening plate is not less than 2mm.

[0018] Furthermore: In S3, the predetermined distance between the right weld seam between the right side wall of the elbow plate and the right side reinforcing rib plate is not less than 2mm.

[0019] Furthermore: In S3, the predetermined distance between the left weld seam between the left side wall of the elbow plate and the left side reinforcing rib plate is 2mm;

[0020] The predetermined distance between the right weld seam of the right side wall of the elbow plate and the right side reinforcing rib plate is 2mm.

[0021] Furthermore: In S6, the predetermined distance between the bottom weld seam of the elbow plate and the substrate is not less than 1 mm.

[0022] Furthermore: the width of the elbow plate is more than 4mm smaller than the distance between the left and right reinforcing ribs.

[0023] The beneficial effects of this invention are as follows:

[0024] As can be seen from the above scheme, the embodiments of the present invention provide a ship assembly compensation and addition method. For the embedded structure of the elbow plate installed between two adjacent reinforcing ribs, a negative compensation value is added to reduce the size of the elbow plate structure, facilitate the embedded installation, avoid cutting, and improve the assembly efficiency. Attached Figure Description

[0025] Figure 1 A flowchart illustrating a ship assembly compensation and placement method according to an embodiment of the present invention;

[0026] Figure 2 An assembly diagram showing the elbow plate, base plate, left reinforcing rib plate, and right reinforcing rib plate according to an embodiment of the present invention;

[0027] Figure 3 This is a side view showing the assembly of the elbow plate, base plate, left reinforcing rib plate, and right reinforcing rib plate according to an embodiment of the present invention.

[0028] Figure 4A schematic diagram illustrating the structure of the prism plate and the added value n of the end triangle compensation in an embodiment of the present invention;

[0029] Figure 5 A schematic diagram illustrating the structure of the elbow plate and the added value n of the end triangle compensation in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram illustrating the structure of the added value n of the triangular compensation at the end of the main rib of the cabin according to an embodiment of the present invention.

[0031] Figure 7 This is a schematic diagram of the double-bottom segmented anti-deformation triangular compensation structure with added value n, representing an embodiment of the present invention.

[0032] Figure 8 This is a schematic diagram illustrating the structure of the compensation amount n added to the double bottom inner bottom segment of the cargo hold according to an embodiment of the present invention.

[0033] Figure 9 This is a schematic diagram illustrating the structure of the ordinary rib triangle compensation plus value n of a bulk carrier according to an embodiment of the present invention.

[0034] In the diagram, 1 is the base plate; 2 is the elbow plate; 3 is the left reinforcing rib plate; and 4 is the right reinforcing rib plate. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0036] like Figure 1 As shown, the present invention provides a method for ship assembly compensation and placement:

[0037] S1: Multiple reinforcing ribs are sequentially and alternately welded onto the base plate 1;

[0038] S2: By adjusting the heat, the welding stress between the reinforcing rib plate and the base plate 1 is removed;

[0039] S3: Install elbow plate 2 between two adjacent reinforcing ribs. The left weld between the left side wall of elbow plate 2 and the left reinforcing rib 3 is spaced at a predetermined distance. Fix the left end of elbow plate 2 by spot welding. The right weld between the right side wall of elbow plate 2 and the right reinforcing rib 4 is spaced at a predetermined distance. Fix the right end of elbow plate 2 by spot welding.

[0040] S4: The left weld between the left side wall of the welding elbow plate 2 and the left side reinforcing rib plate 3;

[0041] S5: Right weld between the right side wall of the weld elbow plate 2 and the right side reinforcing rib plate 4.

[0042] Specifically, in the field of shipbuilding and processing, many structures are made by welding reinforcing ribs onto a base plate 1 and installing elbow plates 2 between the reinforcing ribs to enhance the strength and mechanical stability of the base plate 1.

[0043] This invention provides a method for ship assembly compensation and placement, in which multiple reinforcing ribs are sequentially and intermittently welded to a base plate 1. After the multiple reinforcing ribs are welded to the base plate 1, the base plate 1 will experience welding stress deformation, which can be removed by adjusting the heat treatment.

[0044] After relieving the welding stress between the reinforcing rib plate and the base plate 1, an elbow plate 2 is installed between two adjacent reinforcing rib plates. The left weld between the left side wall of the elbow plate 2 and the left reinforcing rib plate 3 is spaced at a predetermined distance, and the left end of the elbow plate 2 is fixed by spot welding. The right weld between the right side wall of the elbow plate 2 and the right reinforcing rib plate 4 is spaced at a predetermined distance, and the right end of the elbow plate 2 is fixed by spot welding. The riveter fixes the elbow plate 2 between the left reinforcing rib plate 3 and the right reinforcing rib plate 4 by spot welding. The welder welds the left weld between the left side wall of the elbow plate 2 and the left reinforcing rib plate 3, and then welds the right weld between the right side wall of the elbow plate 2 and the right reinforcing rib plate 4.

[0045] Since the predetermined distance between the left weld seam of the left side wall of the elbow plate 2 and the left reinforcing rib plate 3, and the predetermined distance between the right weld seam of the right side wall of the elbow plate 2 and the right reinforcing rib plate 4, can be achieved by reducing the size of the elbow plate 2.

[0046] This method can reduce welding deformation, reduce welding stress, improve structural assembly efficiency, and ensure construction accuracy.

[0047] As can be seen from the above scheme, the embodiments of the present invention provide a ship assembly compensation and addition method. For the embedded structure of the elbow plate 2 installed between two adjacent reinforcing ribs, a negative compensation value is added to reduce the structural size of the elbow plate 2, which facilitates embedded installation, avoids cutting, and improves assembly efficiency.

[0048] In some alternative embodiments, in S2, the heat treatment involves releasing the welding stress between the reinforcing rib and the substrate 1 by heat treatment on the back side of the substrate 1; back heat treatment is a specific shipbuilding technology mainly used for hot deformation treatment of specific plates. This technology utilizes the principle of thermal expansion and contraction of metals, heating the steel plate to make it expand, and then using its contraction characteristics to change the shape of the plate when the steel plate cools.

[0049] Furthermore, the present invention provides a method for ship assembly compensation and placement, which also includes:

[0050] S6: The predetermined distance between the bottom weld seam of the elbow plate 2 and the base plate 1;

[0051] S7: Bottom weld between the bottom sidewall of the welding elbow plate 2 and the base plate 1.

[0052] Since the bottom weld seam between the bottom sidewall of the elbow plate 2 and the base plate 1 is spaced at a predetermined distance, this can be achieved by reducing the size of the elbow plate 2. The welder welds the bottom weld seam between the bottom sidewall of the elbow plate 2 and the base plate 1. Welding is then completed between the elbow plate 2 and the base plate 1, the left reinforcing rib plate 3, and the right reinforcing rib plate 4.

[0053] This method can reduce welding deformation, reduce welding stress, improve structural assembly efficiency, and ensure construction accuracy.

[0054] Furthermore, the present invention provides a method for ship assembly compensation and placement, which also includes:

[0055] S8: By adjusting the heat, the welding stress between the elbow plate 2 and the base plate 1, the left reinforcing rib plate 3, and the right reinforcing rib plate 4 is removed.

[0056] The welding stress between the elbow plate 2 and the base plate 1, the left reinforcing rib plate 3, and the right reinforcing rib plate 4 can be removed by adjusting the heat.

[0057] Specifically, in S8, the heat adjustment is achieved by adjusting the heat on the back of the substrate 1 to release and remove the welding stress between the elbow plate 2 and the substrate 1, the left reinforcing rib plate 3, and the right reinforcing rib plate 4.

[0058] In some alternative embodiments, the present invention provides a method for ship assembly compensation and deployment:

[0059] In S3, the predetermined distance between the left weld seam of the left side wall of the elbow plate 2 and the left side reinforcing rib plate 3 is not less than 2mm.

[0060] The predetermined distance between the left weld seam of the elbow plate 2 and the left reinforcing rib plate 3 is not less than 2mm. This can reduce welding deformation, reduce welding stress, improve structural assembly efficiency, and ensure construction accuracy.

[0061] In some alternative embodiments, the present invention provides a method for ship assembly compensation and deployment:

[0062] In S3, the predetermined distance between the right weld seam of the right side wall of the elbow plate 2 and the right side reinforcing rib plate 4 is not less than 2mm.

[0063] The predetermined distance between the right weld seam of the elbow plate 2 and the right reinforcing rib plate 4 is not less than 2mm. This can reduce welding deformation, reduce welding stress, improve structural assembly efficiency, and ensure construction accuracy.

[0064] Specifically:

[0065] In S3, the predetermined distance between the left weld seam between the left side wall of the elbow plate 2 and the left reinforcing rib plate 3 is 2mm;

[0066] The predetermined distance between the right weld seam of the right side wall of the elbow plate 2 and the right side reinforcing rib plate 4 is 2mm.

[0067] In some alternative embodiments, the present invention provides a method for ship assembly compensation and deployment:

[0068] In S6, the predetermined distance between the bottom weld seam of the elbow plate 2 and the base plate 1 is not less than 1 mm.

[0069] The predetermined distance between the bottom weld seam of the elbow plate 2 and the base plate 1 is not less than 1 mm. This can reduce welding deformation, reduce welding stress, improve structural assembly efficiency, and ensure construction accuracy.

[0070] In some alternative embodiments, the present invention provides a method for ship assembly compensation and placement: the width of the elbow plate 2 is more than 4 mm smaller than the distance between the left reinforcing rib plate 3 and the right reinforcing rib plate 4.

[0071] This invention provides a ship assembly compensation method. For the embedded structure of the elbow plate 2 installed between two adjacent reinforcing ribs, a negative compensation value is added to reduce the structural size of the elbow plate 2, making it easier to embed and install, avoiding cutting, and improving assembly efficiency.

[0072] Another aspect of this application is the method of adding triangular compensation:

[0073] Example 1: As Figure 4 As shown: The added value n for the triangular compensation of the prismatic plate and its ends (all units are in millimeters).

[0074] T n T≤15 L×2.0 / 1000 15＜T≤20 L×1.5 / 1000 T＞20 L×1 / 1000

[0075] illustrate:

[0076] L—Toe length; T—Plate thickness; —The compensation amount is n millimeters; —The compensation amount is 0 mm.

[0077] It should be noted that when L≤700, no triangular compensation is added.

[0078] Example 2: As Figure 5 As shown: the added value n for the elbow plate and end triangle compensation (all units are in millimeters).

[0079] T n T≤20 L×1.5 / 1000 20＜T L×1.0 / 1000

[0080] illustrate:

[0081] L—Toe length; T—Plate thickness; —The compensation amount is n millimeters; —The compensation amount is 0 mm.

[0082] It should be noted that this method is applicable to large ribs with curved free edges.

[0083] Example 3: As Figure 6 As shown: The added value n for the triangular compensation at the end of the main rib of the cabin (all units are in millimeters).

[0084] illustrate:

[0085] L—Toe tip length; —The compensation amount is n millimeters; —The compensation amount is 0 mm.

[0086] It should be noted that: n = L * 5 / 1000 (MAX n = 7 mm).

[0087] Example 4: Figure 7 As shown: The added value n for the triangular compensation of the double bottom segment of the cabin in anti-deformation (all units are in millimeters).

[0088] illustrate:

[0089] B—Length; —The compensation amount is n millimeters; —The compensation amount is 0 mm.

[0090] It should be noted that: n = B * 3 / 1000 (n ≤ 10 mm).

[0091] Example 5: Figure 8 As shown: The compensation value n for the double bottom inner bottom section of the cargo hold (all units are in millimeters).

[0092] illustrate:

[0093] B—Length; —The compensation amount is n millimeters; —The compensation amount is 0 mm.

[0094] It should be noted that when 3800 > B > 2200, n = 2 mm.

[0095] Example 6: As Figure 9 As shown: Additional allowance n for triangular compensation of ordinary ribs on bulk carriers (all units are in millimeters).

[0096] illustrate:

[0097] L—Toe tip length; —The compensation amount is n millimeters; —The compensation amount is 0 mm.

[0098] It should be noted that when L > 1500, n = 5 mm; when L ≤ 1500, n = 3 mm.

[0099] The above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for ship assembly compensation and expansion, characterized in that: S1: Multiple reinforcing ribs are sequentially and alternately welded onto the base plate; S2: By adjusting the heat, the welding stress between the reinforcing rib plate and the substrate is removed; S3: Install an elbow plate between two adjacent reinforcing ribs, with the left weld between the left side wall of the elbow plate and the left reinforcing rib plate spaced at a predetermined distance, and fix the left end of the elbow plate by spot welding; the right weld between the right side wall of the elbow plate and the right reinforcing rib plate spaced at a predetermined distance, and fix the right end of the elbow plate by spot welding. S4: Weld the left weld between the left side wall of the elbow plate and the left side reinforcing rib plate; S5: Weld the right weld between the right side wall of the elbow plate and the right side reinforcing rib plate; Also includes: S6: The predetermined distance between the bottom weld seam of the elbow plate and the base plate; S7: Bottom weld between the bottom sidewall of the welding elbow plate and the base plate; Also includes: S8: By adjusting the heat, the welding stress between the elbow plate and the base plate, the left reinforcing rib plate, and the right reinforcing rib plate is removed; In S2, the heat adjustment is to release the welding stress between the reinforcing rib and the substrate by adjusting the heat treatment on the back of the substrate. In S8, the heat adjustment is to release the welding stress between the elbow plate and the substrate, the left reinforcing rib plate, and the right reinforcing rib plate by adjusting the heat treatment on the back of the substrate. In S3, the predetermined distance between the left weld seam between the left side wall of the elbow plate and the left side stiffening plate is not less than 2mm; In S3, the predetermined distance between the right weld seam of the right side wall of the elbow plate and the right side stiffening plate is not less than 2mm.

2. The ship assembly compensation and placement method according to claim 1, characterized in that: In S3, the predetermined distance between the left weld seam between the left side wall of the elbow plate and the left side stiffening plate is 2mm; The predetermined distance between the right weld seam of the right side wall of the elbow plate and the right side reinforcing rib plate is 2mm.

3. The ship assembly compensation and placement method according to claim 1, characterized in that: In S6, the predetermined distance between the bottom weld seam of the elbow plate and the substrate is not less than 1 mm.

4. The ship assembly compensation and placement method according to claim 1, characterized in that: The width of the elbow plate is more than 4mm smaller than the distance between the left and right reinforcing ribs.

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