Method for controlling installation precision of box columns of large container ship in segmentation stage

Abstract

The invention provides a precision control method for installation of ultra-large container ship box columns in a segmentation stage. The precision control method comprises the following steps that splicing of a hatch coaming is completed through a hatch coaming small assemblage; in the middle assembly of the main deck assembly, a mounting line of a box column is drawn on the back face of a main deck according to the design requirement; the inner shell longitudinal wall plate is expanded and assembled in the middle; the inner shell longitudinal wall plate expanding assembly and the outer plate assembly are folded and welded, welding of a hatch coaming middle web and the inner side of a main deck is completed, and torsion box sections are formed; taking the outer plate of the torsion box section as a base plane, laterally arranging the torsion box section on the jig frame, and sequentially installing the iron outfitting pieces on the section; box columns are installed according to the box column installation lines and the anvil marks on the back face of the main deck; box columns are positioned; and the panel and the support of the box column are positioned. Overhead welding of welding seams among the hatch coaming, the box columns and the main deck can be avoided, the construction difficulty is reduced, the working efficiency is improved, overall sand washing and coating can be achieved, and the period is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and in particular to a method for controlling the installation accuracy of a column of a large container ship in a segmented stage. Background Art

[0002] "Precision shipbuilding and lean shipbuilding" are the shipbuilding goals that advanced shipbuilding companies at home and abroad are constantly promoting. In terms of promotion ideas, they are not limited to hull structure operations, but are promoted with the concept of "intermediate product" integrity. That is, with structural planning as the theme and outfitting planning as the core, component outfitting technology research and intermediate product integrity construction technology research are carried out, so as to ultimately achieve a significant improvement in the efficiency of container ship construction.

[0003] Hatch coamings, columns, and other components of ultra-large container ships are installed during the assembly or embarkation phases. During the construction of ultra-large container ships, the installation accuracy of hatch coamings and columns is a key factor affecting shipbuilding quality and efficiency. Since these components are typically installed during the assembly or embarkation phases, their construction requires extremely high levels of difficulty and precision. For example, during the assembly phase, the torsion box sections are installed sideways using the outer plating or inner longitudinal walls as the base. This installation method not only presents overhead welding issues, resulting in low construction efficiency, but is also susceptible to welding deformation that affects installation accuracy. During the embarkation phase, the installation of hatch coamings and columns presents even greater challenges. The need to work at height significantly increases the difficulty and safety risks. Furthermore, the complexity of working at height makes installation accuracy difficult to ensure. Any deviations require significant time and effort to adjust, potentially impacting the docking period. Summary of the Invention

[0004] In response to the shortcomings of the prior art, the present invention provides a method for controlling the installation accuracy of large container ship columns during the block stage. The method involves marking the column installation line on the back of the main deck according to design requirements and using a sample punch mark, as well as the association formed by the sample punch mark on the center line of the column foot on the column body. Furthermore, the column is positioned and installed on the torsion box segment body relative to the length, width, and height of the hull based on the association structure installed on the torsion box segment. The hatch coaming and column described in the present invention are constructed integrally during the block and group assembly stages, eliminating overhead welding between the hatch coaming, column, and main deck, reducing construction difficulty and improving work efficiency. Furthermore, the column can be sandblasted and painted as a whole, shortening the cycle time.

[0005] The present invention achieves the above technical objectives through the following technical means.

[0006] A method for controlling the precision of installing a column of an ultra-large container ship in a segmented stage comprises the following steps:

[0007] S01: The hatch coaming team completes the splicing of the hatch coaming;

[0008] S02: During assembly of the main deck components, mark the installation lines of the box columns on the back of the main deck according to the design requirements and mark them with sample punches;

[0009] S03: Assembly of the inner shell longitudinal wall panels during expansion;

[0010] S04: Weld the hanging brackets and process reinforcement ribs on the inner shell longitudinal wall expansion assembly;

[0011] S05: The inner hull longitudinal wall plate expansion assembly and the outer plate assembly are welded together, and the hatch coaming center web and the inner side of the main deck are welded to form a torsion box segment;

[0012] S06: Using the torsion box segment outer plating as the base, place the torsion box segment sideways on the cradle and install the iron fittings on the segment in sequence; install the column according to the column installation line and sample punch mark on the back of the main deck;

[0013] S07: Hoist the box column and position the base of the box column with the main deck, and then complete the positioning in the bow and stern directions, transverse width and height directions respectively;

[0014] S08: Position the panel and support of the box column.

[0015] Furthermore, the hatch coaming assembly is specifically constructed as follows: with the panel as the base surface, the panel is positioned on the tire frame, and the rib inspection line, center line and frame line are marked respectively with a square; with the zero-residue edge as the reference, a 100M.K joint line is drawn on the web, and the web, transverse member and rib assembly are installed and spliced ​​to form the hatch coaming.

[0016] Furthermore, the assembly of the main deck assembly is specifically as follows: welding longitudinal members and ribs on the main deck to form the main deck assembly; during the process of splicing and welding longitudinal members and ribs, a 100M.K joint line should be set on the main deck to ensure the welding position of the ribs.

[0017] Furthermore, the inner shell longitudinal wall panel expansion is specifically assembled as follows: using the inner shell longitudinal wall panel in the inner shell longitudinal wall panel assembly as the base surface, the main deck assembly, hatch coaming and bulk parts are hoisted in sequence, and the main deck assembly and hatch coaming are constructed according to the single-side reference, and the lines are aligned to ensure the accuracy of the segmented surface consistency; after the welding is completed, the inner shell longitudinal wall panel expansion assembly is formed.

[0018] Furthermore, during the assembly of the inner hull longitudinal wall plate expansion, channel steel reinforcement should be provided before welding the outer corner welds between the web plate and the main deck.

[0019] Furthermore, the bow and stern direction positioning is specifically: positioning is performed based on the distance from the center punch mark of the box foot panel on the box column body panel to the theoretical line of the transverse bulkhead.

[0020] Furthermore, the transverse width of the ship is positioned specifically as follows: positioning is performed based on the distance from the centerline punch mark of the box foot panel on the box column body panel to the node of the non-structural surface of the inner shell longitudinal wall plate toward the midship side and the main deck.

[0021] Furthermore, the positioning in the ship height direction is specifically: positioning is performed based on the distance from the outer contour line of the box foot on the box column body panel to the node between the inner shell longitudinal wall plate and the main deck non-structural surface.

[0022] The beneficial effects of the present invention are:

[0023] 1. The method for controlling the installation accuracy of the column in the segmented stage of a large container ship described in the present invention is to mark the installation line of the column on the back of the main deck according to the design requirements and use a sample punch mark to form an association with the sample punch mark of the center line on the box foot on the column body; and to position and install the column on the torsion box segment body relative to the three hull coordinates of the length, width and height of the hull based on the association structure installed on the torsion box segment.

[0024] 2. The hatch coamings and box columns of the present invention are integrally constructed in the block and group erection stages, which can avoid overhead welding of the welds between the hatch coamings, box columns and the main deck, reduce construction difficulty, improve work efficiency, and enable overall sandblasting and painting, shortening the cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. The drawings described below are some embodiments of the present invention. For ordinary technicians in this field, it is obvious that other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 The figure is a schematic diagram of the hatch coaming group according to the present invention.

[0027] Figure 2 It is a schematic assembly diagram of the main deck assembly of the present invention.

[0028] Figure 3 It is a schematic diagram of the inner shell longitudinal wall panel being assembled during expansion according to the present invention.

[0029] Figure 4 This is a schematic diagram of the inner shell longitudinal wall panel expansion assembly and the outer panel assembly according to the present invention being closed.

[0030] Figure 5 This is a schematic diagram of the box column installation described in the present invention.

[0031] Figure 6This is a schematic diagram of the positioning of the box column described in the present invention relative to the bow and stern directions of the ship.

[0032] Figure 7 This is a schematic diagram of the positioning of the box column described in the present invention relative to the transverse width of the ship.

[0033] Figure 8 This is a schematic diagram of the positioning of the box column described in the present invention relative to the ship height direction.

[0034] In the picture:

[0035] 1-Hatch coaming; 1-1-Panel plate; 1-2-Web plate; 1-3-Rib plate assembly; 1-4-Transverse member; 2-Main deck assembly; 2-1-Main deck; 2-2-Rib plate; 2-3-Longitudinal member; 3-Inner hull longitudinal wall plate assembly; 4-Inner hull longitudinal wall plate expansion assembly; 5-Outer plate assembly; 6-Box column; 7-Transverse bulkhead. DETAILED DESCRIPTION

[0036] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "axial", "radial", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] Taking Evergreen 24000TEU as an example, the precision control method for installing the column of an ultra-large container ship in a segmented stage according to the present invention is described, which includes the following steps:

[0040] S01: Hatch coaming group is set up, and the set up represents the process step, such as Figure 1 As shown, specifically, the following steps are taken: with the panel 1-1 as the base surface, it is positioned on the tire frame, and the rib inspection line, center line and frame line are marked respectively with a square. The 100M.K joint line is drawn at the web 1-2 based on the zero-residue edge, and the web 1-2, transverse member 1-4 and rib assembly 1-3 are installed and spliced ​​to form the hatch coaming 1.

[0041] S02: Assembled in the main deck assembly, such as Figure 2 Specifically, after the dimensions of the main deck 2-1 have been inspected and accepted, the longitudinal members 2-3 and ribs 2-2 are welded to the main deck 2-1 to form the main deck assembly 2. During the assembly and welding of the longitudinal members 2-3 and ribs 2-2, a 100M.K. joint line is set on the main deck 2-1 to ensure the welding position of the ribs 2-2. The installation line of the box column 6 is marked on the back of the main deck 2-1 according to the design requirements and marked with a sample punch to facilitate the subsequent installation of the box column 6 and ensure that the beam arch value of the main deck 2-1 can be guaranteed during subsequent construction.

[0042] S03: Inner shell longitudinal wall plate expansion assembly, such as Figure 3 Specifically, the inner hull longitudinal wall plate assembly 3 is used as the base surface, and the main deck assembly 2, hatch coaming 1, and other loose components are sequentially hoisted. Both the main deck assembly 2 and hatch coaming 1 are constructed using a single-side datum, achieving line-to-line alignment to ensure segmental planarity accuracy. Before welding the outer fillet welds between the web plate 1-2 and the main deck 2-1, channel steel reinforcement is installed to reduce welding deformation caused by the fillet welds. After welding, the inner hull longitudinal wall plate expansion assembly 4 is formed.

[0043] S04: Install and weld hanging brackets and process reinforcement ribs on the inner shell longitudinal wall panel expansion component 4. The process reinforcement ribs prevent deformation during lifting.

[0044] S05: If Figure 4As shown, the inner hull longitudinal wall plate expansion assembly 4 and the outer plate assembly 5 are welded together, and the fillet welds of the hatch coaming 1 middle web 1-2 and the inner side of the main deck 2-1 are completed, finally forming a torsion box segment;

[0045] S06: Figure 5 As shown, with the torsion box segment outer plate as the base surface, the torsion box segment is placed on the cradle in a side position, and the iron fittings on the segment are installed in sequence. The box column 6 is installed according to the installation line and sample punch mark on the back of the main deck 2-1.

[0046] S07: Positioning of the column 6. When hoisting the column 6, its base is first positioned with the main deck 2-1 to ensure the main dimensional accuracy of the length direction of the column 6 from the reference edge bow and stern. Positioning is completed in the bow and stern directions, the transverse width of the ship, and the height of the ship (in no particular order). This includes the following three parts:

[0047] S07.1: During large assembly and installation, the box column 6 is positioned relative to the bow and stern of the ship. The positioning is based on the distance from the center punch mark of the box foot coaming on the main panel of the box column 6 to the theoretical line of the transverse bulkhead 7, such as Figure 6 As shown;

[0048] S07.2: During large assembly and installation, the positioning of the box column 6 relative to the transverse width of the ship is determined based on the distance from the centerline of the box foot coaming on the main panel of the box column 6 to the node of the non-structural surface of the inner shell longitudinal wall plate on the side of the main deck 2-1. Figure 7 As shown;

[0049] S07.3: During large assembly and installation, the positioning of the box column 6 relative to the ship height direction is based on the distance from the outer contour line of the box foot on the main panel of the box column 6 to the node of the inner shell longitudinal wall plate and the main deck 2-1 non-structural surface, such as Figure 8 shown.

[0050] S08: After the box column 6 is positioned, the panel and support of the box column 6 are positioned to ensure the installation accuracy of the box column 6 and improve the safety factor on site.

[0051] The precision control method for the segmented installation of ultra-large container ship columns of the present invention has the following significant results compared to the prior art:

[0052] 1. The hatch coamings and columns of ultra-large container ships are installed horizontally in sections, avoiding overhead welding of the hatch coamings, reducing construction difficulty and ensuring safety.

[0053] 2. The box column installation process is moved forward, which effectively reduces labor intensity, avoids the subsequent shortage of crane resources, saves kinetic energy, and shortens the installation period of the box column in the dock and wharf stages.

[0054] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0055] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for controlling the precision of installing the column of an ultra-large container ship in the segmented stage, characterized in that: The following steps are involved: S01: The hatch coaming team completes the splicing of the hatch coaming (1); S02: During assembly of the main deck assembly, mark the installation line of the box column (6) on the back of the main deck (2-1) according to the design requirements and mark it with a sample punch; S03: Assembly of the inner shell longitudinal wall panels during expansion; S04: Welding the hanging brackets and process reinforcement ribs on the inner shell longitudinal wall plate expansion assembly (4); S05: The inner hull longitudinal wall plate expansion assembly (4) and the outer plate assembly (5) are welded together, and the hatch coaming (1) middle web plate (1-2) and the inner side of the main deck (2-1) are welded together to form a torsion box segment; S06: Using the outer plate of the torsion box segment as the base surface, place the torsion box segment sideways on the frame, and install the iron fittings on the segment in sequence; install the box column (6) according to the installation line and sample punch mark of the box column (6) on the back of the main deck (2-1); S07: hoisting the box column (6), positioning the root of the box column (6) and the main deck (2-1), and then completing the positioning in the bow and stern directions, the transverse width of the ship, and the height of the ship respectively; S08: Positioning the panel and support of the box column (6).

2. The method for controlling the precision of installing the column of an ultra-large container ship in a segmented stage according to claim 1 is characterized in that: The hatch coaming assembly is specifically constructed as follows: with the panel (1-1) as the base surface, the panel (1-1) is positioned on the tire frame, and the rib inspection line, the center line and the frame line are marked respectively with a square; with the no-residue edge as the reference, a 100M.K joint line is drawn at the web (1-2), and the web (1-2), the transverse member (1-4) and the rib assembly (1-3) are installed, and the hatch coaming (1) is formed after splicing.

3. The method for controlling the precision of installing the column of an ultra-large container ship in a segmented stage according to claim 1 is characterized in that: The main deck assembly is specifically assembled as follows: longitudinal members (2-3) and ribs (2-2) are welded on the main deck (2-1) to form the main deck assembly (2); during the process of splicing and welding the longitudinal members (2-3) and ribs (2-2), a 100M.K joint line should be set on the main deck (2-1) to ensure the welding position of the ribs (2-2).

4. The method for controlling the precision of installing the column of an ultra-large container ship in a segmented stage according to claim 1 is characterized in that: The inner shell longitudinal wall plate expansion is specifically assembled as follows: using the inner shell longitudinal wall plate in the inner shell longitudinal wall plate assembly (3) as the base surface, the main deck assembly (2), the hatch coaming (1) and the bulk parts are hoisted in sequence, and the main deck assembly (2) and the hatch coaming (1) are both constructed according to a single-side reference, and the lines are aligned to ensure the accuracy of the segmented same-surface degree; After welding is completed, an inner shell longitudinal wall plate expansion assembly (4) is formed.

5. The method for controlling the precision of installing the column of an ultra-large container ship in a segmented stage according to claim 1 is characterized in that: During the assembly of the inner hull longitudinal wall plate expansion, channel steel reinforcement should be provided before welding the outer corner welds between the web plate (1-2) and the main deck (2-1).

6. The method for controlling the precision of installing the column of an ultra-large container ship in a segmented stage according to claim 1 is characterized in that: The bow and stern direction positioning is specifically: positioning is performed based on the distance from the center punch mark of the box foot panel on the box column (6) body panel to the theoretical line of the transverse bulkhead (7).

7. The method for controlling the precision of installing the column of an ultra-large container ship in a segmented stage according to claim 1 is characterized in that: The positioning of the transverse width of the ship is specifically carried out based on the distance from the centerline sample punch mark of the box foot panel on the box column (6) body panel to the non-structural surface node of the inner shell longitudinal wall plate toward the midship side and the main deck (2-1).

8. The method for controlling the precision of installing the column of an ultra-large container ship in a segmented stage according to claim 1 is characterized in that: The positioning in the ship height direction is specifically: positioning is performed based on the distance from the outer contour line of the box foot on the box column (6) body panel to the non-structural surface node of the inner shell longitudinal wall plate and the main deck (2-1).

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