Method for assembling ship side structure

Abstract

The present invention relates to the technical field of shipbuilding, and particularly to a method for assembling a ship side structure, which comprises the following steps: marking the assumed center line, horizontal line and rib inspection line of the jig; installing the deck and outer plate on the jig, positioning and fixing them; scribing reference lines on the deck and outer plate according to the assumed center line, horizontal line and rib inspection line; installing transverse members, longitudinal members, side brackets, bulkhead brackets, bottom longitudinal members, side air door bases and fenders on the deck and outer plate according to the reference lines to form a side structure; welding and installing longitudinal stiffeners and a plurality of transverse stiffeners on the side structure, and welding lifting lugs on the side structure; hoisting the side structure to the installation position and welding the side structure to the main hull; welding a pipe rack structure on the side structure and removing the longitudinal stiffeners and transverse stiffeners; completing the closing welding of the side structure and the surrounding hull structure. The present invention can ensure that the quality after assembly meets the requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and particularly to a method for assembling a ship side structure. Background Art

[0002] Aluminum alloy has material characteristics such as low density, high specific strength, and strong corrosion resistance, and has been widely used in shipbuilding such as high-speed boats, ocean research ships, and fishing boats, ensuring the structural strength, light weight, and corrosion resistance of the ships.

[0003] Among them, the side structure of a ship is composed of a deck, an outer plate, a side air door base, fenders, and pipe racks. As a key component structure in an aluminum hull, the side structure directly bears multiple loads such as superstructure loads, wave impacts, and water pressures. Its manufacturing quality and installation accuracy play a crucial role in structural strength and stability. During the construction process, due to the large linear expansion coefficient of the materials, the special structural line type, and the complex pipe rack structure of the side structure, engineering problems such as large welding stress, difficult deformation control, and poor installation accuracy are likely to occur, resulting in poor quality after assembly.

[0004] Therefore, a method for assembling a ship side structure is needed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a method for assembling a ship side structure, which can ensure that the quality after assembly meets the requirements.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A method for assembling a ship side structure includes the following steps:

[0008] S1. Mark the assumed center line, horizontal line, and rib inspection line of the jig;

[0009] S2. Install the deck and the outer plate on the jig, and position and fix them according to the assumed center line, the horizontal line, and the rib inspection line of the jig;

[0010] S3. Draw reference lines on the deck and the outer plate according to the assumed center line, the horizontal line, and the rib inspection line;

[0011] S4. Install transverse members, longitudinal members, side brackets, loose brackets, bottom longitudinal members, side air door bases, and fenders on the deck and the outer plate according to the reference lines to form a side structure;

[0012] S5. Weld and install longitudinal stiffeners and a plurality of transverse stiffeners on the side structure, and weld lifting lugs on the side structure;

[0013] S6. Hoist the side structure to the installation position and weld the side structure to the main hull;

[0014] S7. Weld the pipe support structure to the side structure, and remove the longitudinal stiffeners and the transverse stiffeners;

[0015] S8. Complete the closure welding of the side structure and the surrounding hull structures.

[0016] In some embodiments, in step S2, use iron weights to press the deck and the outer plate tightly against the jig and fix them with a rotating puller.

[0017] In some embodiments, in step S3, draw the installation lines of the sub-assemblies and the large closure joint lines on the deck and the outer plate according to the reference line.

[0018] In some embodiments, when installing the side bracket, the side bracket connected to the longitudinal circular pipe of the pipe support structure is fixed by spot welding.

[0019] In some embodiments, in step S5, install longitudinal diagonal bracing stiffeners at the side air door base.

[0020] In some embodiments, in step S5, cooperate with the lifting equipment using the welding lifting lugs to turn over the side structure, and mark the rib position lines of the overall width and length of the side structure, and the positioning lines of the height and width of the fold line.

[0021] In some embodiments, in step S6, set up a combined pier tooling on the ground directly below the outermost frame of the side structure for support, then hoist the side structure to the installation position, and adjust the rib position lines and the positioning lines to correspond to the main hull.

[0022] In some embodiments, in step S6, reserve an anti-deformation amount for the side structure.

[0023] In some embodiments, in step S6, the hull structures within the range of 0 - 300 mm from the large closure joint line are only assembled by spot welding, and full welding is carried out after the shipbuilding berth is closed and positioned.

[0024] In some embodiments, in step S7, the manufacturing process of the pipe support structure is as follows:

[0025] First, assemble pipe A, pipe B, pipe C, the first bracket and the support stiffeners in the pipe support structure into a type A pipe support structure, and assemble pipe D, the second bracket and the closing plate into a bulk pipe support structure, and then assemble the type A pipe support structure and the bulk pipe support structure to form the pipe support structure.

[0026] Advantages of the present invention:

[0027] A method for assembling a ship's side structure provided by the present invention positions and fixes the deck and the outer plate on the jig according to the assumed center line, horizontal line and rib inspection line of the jig. Benchmark lines are drawn on the deck and the outer plate according to the assumed center line, horizontal line and rib inspection line. Transverse members, longitudinal members, side brackets, bulkhead brackets, bottom longitudinal members, side air door bases and fenders are installed on the deck and the outer plate according to the benchmark lines to form a side structure. Longitudinal stiffeners and a plurality of transverse stiffeners are welded and installed on the side structure, and lifting lugs are welded on the side structure. The side structure is hoisted to the installation position, the side structure is welded to the main hull, a pipe rack structure is welded on the side structure, and the longitudinal stiffeners and transverse stiffeners are removed to complete the closing welding of the side structure and the surrounding hull structure. By the above method, the positioning and installation of the side structure on the jig can ensure the smooth progress of the assembly of the side structure, and the installation accuracy is ensured by guiding the installation of components and brackets through marking the benchmark lines. By welding and installing longitudinal stiffeners and a plurality of transverse stiffeners on the side structure, it is convenient to control deformation, reduce the influence of welding stress, and ensure that the quality after assembly meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present invention and these drawings.

[0029] Figure 1 is an exploded view of the outer plate, deck and jig in a method for assembling a ship's side structure of the present invention;

[0030] Figure 2 is a schematic diagram of the side structure in a method for assembling a ship's side structure of the present invention;

[0031] Figure 3 is a schematic diagram of the pipe rack structure in a method for assembling a ship's side structure of the present invention;

[0032] Figure 4 is a schematic diagram of one perspective of installing longitudinal stiffeners and transverse stiffeners on the side structure in a method for assembling a ship's side structure of the present invention;

[0033] Figure 5 is a schematic diagram of another perspective of installing longitudinal stiffeners and transverse stiffeners on the side structure in a method for assembling a ship's side structure of the present invention;

[0034] Figure 6It is a schematic diagram of the butt joint between the side structure and the main hull in an assembling method for the side structure of a ship according to the present invention.

[0035] In the figure:

[0036] 100, main hull; 110, surrounding hull structure; 200, jig; 300, side structure; 301, outer plate; 302, deck; 303, transverse member; 304, longitudinal member; 305, side bracket; 306, bulkhead bracket; 307, fender; 308, lifting lug; 309, transverse stiffener; 310, longitudinal diagonal bracing stiffener; 311, longitudinal stiffener; 312, side air vent base; 400, dolly combination tooling; 401, steel dolly; 402, wedge-shaped sleeper; 500, pipe rack structure; 501, pipe A; 502, pipe B; 503, pipe C; 504, pipe D. Detailed implementation mode

[0037] Before explaining in detail any implementation mode of the present application, it should be understood that the present application is not limited to the structural details and component arrangements described in the following description or shown in the above drawings.

[0038] In the present application, the terms "include", "comprise", "have" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the presence of additional identical elements in the process, method, article or device including that element.

[0039] In the present application, the terms "connect", "combine", "couple", "mount" can be direct connection, combination, coupling or mounting, or can be indirect connection, combination, coupling or mounting. Among them, by way of example, direct connection means that two parts or components are connected together without the need to provide an intermediate member, and indirect connection means that two parts or components are respectively connected to at least one intermediate member, and these two parts or components are connected through the intermediate member. In addition, "connect" and "couple" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0040] In the present application, those of ordinary skill in the art will understand that the functions performed by components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by parts can also be performed by one part, one component, or a combination of multiple parts.

[0041] In this application, the orientation terms such as "upper", "lower", "left", "right", "front", and "rear" are described based on the orientation and positional relationship shown in the drawings, and should not be construed as limiting the embodiments of this application. In addition, in the context, it should also be understood that when it is mentioned that one component is connected "above" or "below" another component, it can not only be directly connected "above" or "below" another component, but also be indirectly connected "above" or "below" another component through an intermediate component. It should also be understood that the orientation terms such as the upper side, the lower side, the left side, the right side, the front side, and the rear side not only represent the positive orientation, but can also be understood as the side orientation. For example, the lower side can include directly below, lower left, lower right, lower front, and lower rear, etc.

[0042] When assembling the side structure of a ship, in order to ensure that the quality after assembly meets the requirements, such as Figures 1-6 shown, the present invention provides a method for assembling a ship side structure. The method for assembling a ship side structure includes the following steps:

[0043] S1. Mark the assumed center line, horizontal line and rib inspection line of the jig 200;

[0044] S2. Install the deck 302 and the outer plate 301 on the jig 200, and position and fix them according to the assumed center line, horizontal line and rib inspection line of the jig 200;

[0045] S3. Draw reference lines on the deck 302 and the outer plate 301 based on the assumed center line, horizontal line and rib inspection line;

[0046] S4. Install transverse members 303, longitudinal members 304, side brackets 305, bulkhead brackets 306, bottom longitudinal members, side air vent bases 312 and fenders 307 on the deck 302 and the outer plate 301 according to the reference lines to form the side structure 300;

[0047] S5. Weld and install longitudinal stiffeners 311 and a plurality of transverse stiffeners 309 on the side structure 300, and weld lifting lugs 308 on the side structure 300;

[0048] S6. Lift the side structure 300 to the installation position, and weld the side structure 300 to the main hull 100;

[0049] S7. Weld and install the pipe rack structure 500 on the side structure 300, and remove the longitudinal stiffeners 311 and the transverse stiffeners 309;

[0050] S8. Complete the closing weld of the side structure 300 and the surrounding hull structure 110.

[0051] In the above - mentioned manner, the positioning and installation of the side structure 300 on the jig 200 can ensure the smooth progress of the assembly of the side structure 300. Moreover, by marking the reference lines to guide the installation of components and brackets, the installation accuracy can be guaranteed. By welding and installing longitudinal stiffeners 311 and multiple transverse stiffeners 309 on the side structure 300, it is convenient to control deformation, reduce the influence of welding stress, and ensure that the quality after assembly meets the requirements.

[0052] In some embodiments, in step S2, iron weights are used to press the deck 302 and the outer plate 301 tightly against the jig 200 and fit them, and a rotating puller is used for fixation. In this embodiment, the side structure 300 is constructed by the reverse - building method. By reasonably designing the jig 200, the jig 200 is adapted to the designed contours of the deck 302 and the outer plate 301. By using iron weights and a rotating puller to press the deck 302 and the outer plate 301 tightly against the jig 200, the contour shapes of the deck 302 and the outer plate 301 can be accurately controlled, ensuring that the subsequent side structure 300 formed after welding and assembly meets the design requirements.

[0053] In some embodiments, in step S3, thin steel wires are pulled at the wire rack, and the assumed center line, horizontal line of the jig 200 and the rib inspection line are marked on the structural surfaces of the deck 302 and the outer plate 301 by the plumb - bob method. And punch marks for reference lines are made at 100 mm from the rib inspection line towards the bow part and 100 mm from the assumed center line of the jig 200 towards the side direction. By marking the reference lines in the above - mentioned manner, it is convenient for the subsequent positioning and installation of other components of the side structure 300.

[0054] In some embodiments, in step S3, the component installation lines and the large - joining seam lines are marked on the deck 302 and the outer plate 301 according to the reference lines. By marking the component installation lines and the large - joining seam lines, it provides effective positioning for the subsequent joining and welding of the assembled side structure 300 with the main hull 100 and the surrounding hull structures 110.

[0055] In some embodiments, when installing the side brackets 305, the side brackets 305 connected to the longitudinal circular tubes of the pipe rack structure 500 are spot - welded for fixation. Since some side brackets 305 have an assembly relationship with the longitudinal circular tubes of the subsequent pipe rack structure 500, but the installation of this part of the side brackets 305 is before the installation of the longitudinal circular tubes. Therefore, by the method of spot - welding installation, when the position of the subsequent installed longitudinal circular tubes is inappropriate, the connection between the side brackets 305 and the deck 302 or the outer plate 301 can be quickly disconnected, and then adjusted to the appropriate position for full - welding.

[0056] In some embodiments, when installing the transverse member 303, since the subsequent hanging weight 308 needs to be welded to the transverse member 303, the part of the transverse member 303 corresponding to the rib position where the hanging weight 308 is located is fully welded, and the transverse member 303 parts of the other rib positions are only spot welded and fixed, and then welded after the ship is positioned on the slipway. In the above manner, when the hanging weight 308 is used to turn over the side structure 300 and hoist it to cooperate with the main hull 100, it can be ensured that the hanging weight 308 is stably connected to the side structure 300 through the transverse member 303. The remaining parts are spot welded to facilitate subsequent adjustment.

[0057] In some embodiments, in step S5, a longitudinal diagonal brace reinforcement 310 is installed at the side air door base 312. By installing the longitudinal diagonal brace reinforcement 310, the strength of the side air door base 312 can be improved to prevent the side air door base 312 from being deformed during the subsequent assembly process.

[0058] In some embodiments, in step S5, the side structure 300 is turned over by using the welding hanger 308 in cooperation with the lifting equipment, and the rib position positioning lines of the overall width and length of the side structure 300 and the positioning lines of the height and width of the angle lines are marked. In the above manner, after the side structure 300 is turned over after the reverse construction is completed, the rib position positioning lines and the positioning lines of the height and width of the angle lines to be subsequently installed with the main hull 100 are marked, so as to facilitate the subsequent guidance of the installation of the side structure 300 on the main hull 100.

[0059] In some embodiments, in step S6, a pier wood assembly tooling 400 is set on the ground directly below the outermost frame of the side structure 300 for support, and then the side structure 300 is hoisted to the installation position, and the rib position positioning line and the positioning line are adjusted to correspond to the main hull 100. In this embodiment, a wedge-shaped sleeper 402 is used in conjunction with a steel pier 401 as the pier wood assembly tooling 400. By cooperating with the wedge-shaped sleeper 402 and the side structure 300, it is possible to avoid rigid contact between the side structure 300 and the pier wood assembly tooling 400, thereby protecting the side structure 300.

[0060] In some embodiments, in step S6, a reverse deformation amount is reserved for the side structure 300. Since internal stress will be generated during the subsequent welding process with the main hull 100, causing the side structure 300 to deform, the reverse deformation amount is reserved to offset the deformation caused by the internal stress after the subsequent welding is completed.

[0061] In some embodiments, in step S6, the hull structure within the range of 0-300 mm from the large closure seam line is only spot welded and assembled, and full welding is performed after the berth is closed and positioned. After the spot welding assembly, the hull structure is then closed and positioned and then fully welded. During the closing and connecting process, the hull structure can be adjusted at any time as needed.

[0062] In some embodiments, in step S7, the manufacturing process of the pipe support structure 500 is as follows:

[0063] First, assemble the A-pipe 501, B-pipe 502, C-pipe 503, the first gusset plate and the support reinforcement in the pipe support structure 500 into an A-type pipe support structure, and assemble the D-pipe 504, the second gusset plate and the sealing plate into a bulk pipe support structure. Then, assemble the A-type pipe support structure and the bulk pipe support structure to form the pipe support structure 500. In this way, the assembly of the pipe support structure 500 is facilitated. After multiple pipe support structures 500 are welded and installed on the side structure 300, install the longitudinal circular pipe, and use the longitudinal circular pipe to connect multiple A-type pipe support structures to ensure the overall structural strength.

[0064] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A method for assembling a ship side structure, characterized in that: The steps include: S1. Marking the assumed center line, horizontal line and rib inspection line of the tire frame (200); S2, installing the deck (302) and the outer plate (301) on the tire frame (200), and positioning and fixing them according to the assumed center line, the horizontal line and the rib inspection line of the tire frame (200); S3, drawing reference lines on the deck (302) and the outer plate (301) according to the assumed center line, the horizontal line and the rib inspection line; drawing component installation lines and large closure seam lines on the deck (302) and the outer plate (301) according to the reference lines; S4. Installing transverse members (303), longitudinal members (304), side brackets (305), bulk brackets (306), bottom longitudinal members, side damper bases (312) and fenders (307) on the deck (302) and the outer plate (301) according to the reference line to form a side structure (300); S5, welding and installing a longitudinal reinforcement (311) and a plurality of transverse reinforcements (309) on the side structure (300), and welding a hanging bracket (308) on the side structure (300); using the welding hanging bracket (308) in cooperation with a lifting device, turning over the side structure (300), and marking the rib position positioning lines of the overall width and length of the side structure (300), and the positioning lines of the height and width of the angle lines; S6, the side structure (300) is hoisted to the installation position, and the side structure (300) is welded to the main hull (100); a pier wood assembly tooling (400) is arranged on the ground directly below the outermost frame of the side structure (300) for support, and then the side structure (300) is hoisted to the installation position, and the rib position positioning line and the positioning line are adjusted to correspond to the main hull (100); the hull structure within the range of 0-300mm from the large closing seam line is only spot welded and assembled, and full welding is performed after the slipway is closed and positioned; S7, welding the pipe rack structure (500) on the side structure (300), and removing the longitudinal reinforcement (311) and the transverse reinforcement (309); S8, completing the welding of the side structure (300) and the surrounding hull structure (110).

2. The ship side structure assembly method according to claim 1, characterized in that: In the step S2, the deck (302) and the outer plate (301) are pressed and fitted to the tire frame (200) using a pressure iron, and fixed using a rotating puller.

3. The method for assembling a ship side structure according to claim 1, characterized in that: When installing the side bracket (305), the side bracket (305) connected to the longitudinal circular tube of the pipe rack structure (500) is fixed by spot welding.

4. The method for assembling a ship side structure according to claim 1, characterized in that: In the step S5, a longitudinal diagonal brace reinforcement (310) is installed at the side air door base (312).

5. The ship side structure assembly method according to claim 1, characterized in that: In the step S6, a reverse deformation amount is reserved for the side structure (300).

6. The method for assembling a ship side structure according to claim 1, characterized in that: In step S7, the manufacturing process of the pipe rack structure (500) is as follows: The A pipe (501), the B pipe (502), the C pipe (503), the first bracket and the supporting reinforcement material in the pipe rack structure (500) are first assembled into an A-type pipe rack structure, and the D pipe (504), the second bracket and the sealing plate are assembled into a bulk pipe rack structure. Then, the A-type pipe rack structure and the bulk pipe rack structure are assembled to form the pipe rack structure (500).

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