Method for assembling modular windshields of large container ships

Abstract

The present invention proposes a method for modular closure construction of a large container ship windshield, comprising: dividing a bow mooring deck area and a bulwark, wherein the divided bow mooring deck and bulwark can be assembled into a front and a rear section, and the windshield is divided into a plurality of sections, wherein the plurality of sections of the windshield can be assembled into a front and a rear section; sequentially assembling the front section of the bow mooring deck area, the front section of the bulwark, and the front part of the windshield from bottom to top; sequentially assembling the rear section of the bow mooring deck area, the rear section of the bulwark, and the rear part of the windshield from bottom to top; designing a lifting scheme for the bow section and the rear section of the windshield; sequentially closure of the rear section and the bow section of the windshield with the main hull by lifting, wherein, during the closure stage, it is necessary to adjust the misalignment between the closure seams of the bow section and the rear section of the windshield; and the present invention simultaneously improves the efficiency of closure and dock closure.

Description

Technical Field

[0001] The invention relates to the technical field of large container ship assembly, in particular to a method for assembling sub-modules of a large container ship wind shield. Background Art

[0002] Currently, large container ships typically install windshields at their bows to reduce wind resistance. These are single-hull, ultra-large openings with large linear profiles in both height and length. These structural weaknesses, unusual shapes, and large dimensions make assembly, support, and hoisting of these shields extremely difficult, and pose a significant risk of deformation during hoisting.

[0003] In response to these problems, the present application provides a method for assembling modular windshields of large container ships. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for the modular closure construction of a large container ship windshield, which is decomposed by segmentation combined with the segmentation of the bow mooring deck area and the bulwark section, and the windshield is dispersed to the bow mooring deck area section and the bulwark section to participate in the overall assembly, and the relevant overall assembly and closure construction are completed.

[0005] This application proposes a method for assembling modular windshields for large container ships, comprising the following steps:

[0006] Division stage: The bow mooring deck area and bulwark are divided. After the division, the bow mooring deck and bulwark can be assembled into two sections, the front and the rear. The windshield is divided into several sections. The sections of the windshield can be assembled into two parts, the front and the rear.

[0007] Assembly stage: from bottom to top, the assembly work of the front section of the bow mooring deck area, the front section of the bulwark, and the front part of the windbreak is completed in sequence, forming the bow section of the windbreak that is located at the front of the overall assembly; from bottom to top, the assembly work of the rear section of the bow mooring deck area, the rear section of the bulwark, and the rear part of the windbreak is completed in sequence, forming the rear section of the windbreak that is located at the rear of the overall assembly;

[0008] Hoisting stage: Design the hoisting schemes for the windshield head section and the windshield tail section to ensure they meet the crane hoisting requirements;

[0009] Closing stage: The aft section and the bow section of the windshield are hoisted and assembled with the main hull in sequence, and the installation work is completed;

[0010] Adjustment stage: During the closing stage, it is necessary to adjust the misalignment between the closing seams of the head section and the tail section of the windshield.

[0011] Furthermore, in the division stage, the bow mooring deck area and bulwark are divided, and when the divided bow mooring deck and bulwark can be assembled into the forward and aft sections:

[0012] When dividing the bow mooring deck area, ensure that the chain locker is intact after the division, and ensure that the chain pipe and anchor base are intact as a whole after the division; when dividing the bulwark into sections, ensure that the bulwark section seam is at the same position as the section division of the bow mooring deck area or that the bulwark section seam is closer to the stern than the section seam of the bow mooring deck area, and at the same time, ensure that the bulwark section seam is vertical or inclined towards the stern.

[0013] Furthermore, when the windshield is divided into sections, the total section seam of the front and rear parts of the windshield is at the same position as the total section seam of the bulwark, or the total section seam of the windshield is closer to the stern than the total section seam of the bulwark, and at the same time, the total section seam of the windshield is ensured to be vertical or inclined toward the stern.

[0014] Furthermore, during the general assembly stage, steel pillars are arranged on the bow mooring deck, and the steel pillars act on the hull through fulcrum components to support the windshield during the general assembly stage.

[0015] Furthermore, during the lifting stage, for the bow section of the wind shield, a lifting point for the bow lifting is set on the tail end of the bow mooring deck, a lifting point for the tail lifting is set on the bow end of the wind shield, and a lifting point for lifting and leveling is set on the middle part of the bow mooring deck.

[0016] Furthermore, during the hoisting stage, for the aft section of the windshield, a port rear end hoisting point, a port bow end hoisting point, and a starboard side hoisting point are set on the mooring deck.

[0017] Furthermore, during the adjustment stage, when adjusting the misalignment between the closing seams of the windshield head section and the windshield tail section, the closing seams are adjusted using a steel wire rope and a steel wire rope connecting device.

[0018] The advantages and positive effects of the present invention are:

[0019] The present invention comprehensively designs and divides the bow mooring deck area segmentation and the bulwark segmentation, divides the windshield into two parts, the front and rear parts, and the two parts are respectively assembled on the platform with the mooring deck area segmentation and the bulwark segmentation, and then are respectively closed in the dock; this method effectively avoids the construction difficulty of assembling the windshield as a whole on the platform separately, reduces the need for a large number of additional windshield overall sections for lifting and reinforcing the windshield when lifting the separate windshield as a whole, reduces the time occupied by the gantry crane in the overall lifting stage, avoids the risk of overall lifting deformation, and at the same time improves the efficiency of overall assembly and dock closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, unless otherwise specified, these drawings are intended only to conceptually illustrate the structures described herein and are not necessarily drawn to scale.

[0021] Figure 1 A partial side view of the dividing seam of the windshield of a large container ship;

[0022] Figure 2 This is a side view of the aft section of a large container ship's windshield;

[0023] Figure 3 This is a side view of the bow section of a large container ship's windshield;

[0024] Figure 4 This is a three-dimensional schematic diagram of the aft section of the windbreak of a large container ship;

[0025] Figure 5 This is a three-dimensional schematic diagram of the bow section of a large container ship's windshield;

[0026] Figure 6 This is a top view schematic diagram of the lifting scheme for the aft section of the windbreak of a large container ship;

[0027] Figure 7 This is a top view schematic diagram of the lifting scheme for the bow section of the windshield of a large container ship;

[0028] Figure 8 This is a schematic diagram of the support of the general section and assembly stage of the wind shield of a large container ship;

[0029] Figure 9 This is a schematic diagram of the fulcrum components supporting the hull of the block assembly;

[0030] Figure 10 This is a schematic diagram of the closing process of the windshield tail section and the windshield forward section;

[0031] Figure 11 This is a side view schematic diagram of the temporary support after the closure of the tail section and the front section of the windshield;

[0032] Figure 12 This is a cross-sectional diagram of the temporary support after the closure of the tail section and the front section of the windshield;

[0033] Figure 13 This is a schematic diagram of the overall division of the chain locker, chain pipe and anchor platform in the mooring deck area. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the implementation of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the present invention, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present invention, and should not be understood as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] This embodiment provides a method for assembling submodules of a large container ship windshield, the method comprising the following steps:

[0037] S1. Division stage: The bow mooring deck area and bulwarks are divided. After division, the bow mooring deck and bulwarks can be assembled into forward and aft sections, and the windshield can be divided into several sections. The sections of the windshield can be assembled into forward and aft parts. Specifically, when the bow mooring deck area, bulwarks, and windshield are divided, they can be decomposed and divided into several sections. The bow mooring deck sections 6 and the bow mooring deck aft section 3 can be assembled to obtain the bow mooring deck forward section 6 and the bow mooring deck aft section 3. The gaps formed when assembling the bow mooring deck sections are called segment seams. The bulwarks sections 5 and the bulwark aft section 2 can be assembled to obtain the bulwark forward section 5 and the bulwark aft section 2. The gaps formed when assembling the bulwark sections are called segment seams. The windshield sections 4 and the windshield aft section 1 can be assembled to obtain the windshield forward section 4 and the windshield aft section 1. The gaps formed when assembling the windshield sections are called segment seams.

[0038] S2, general assembly stage: from bottom to top, complete the general assembly work of the front section of the bow mooring deck area, the front section of the bulwark, and the front part of the windshield, forming the overall front windshield general section 7; from bottom to top, complete the general assembly work of the rear section of the bow mooring deck area, the rear section of the bulwark, and the rear part of the windshield, forming the overall rear windshield general section 8; specifically, Figure 1 、 2As shown in Figures 3 and 4, the gaps between the front section of the bow mooring deck area, the front section of the bulwark, and the front part of the windshield in the bow section of the windshield are called segmented seams. The gaps between the rear section of the bow mooring deck area, the rear section of the bulwark, and the rear part of the windshield in the aft section of the windshield are called segmented seams. For example, a first segmented seam 22 is formed between the rear part of the windshield and the rear section of the bulwark, and a second segmented seam 23 is formed between the rear section of the bow mooring deck area and the rear section of the bulwark. The gaps between the bow section of the windshield and the aft section of the windshield are called segmented seams. Figure 1 The windshield area segment seam 15, the bulwark area segment seam 16, and the mooring deck area segment seam 17 formed when the middle windshield forward segment and the windshield aft segment are assembled;

[0039] S3, Hoisting stage: Design the hoisting schemes for the windshield head section and the windshield tail section to meet the crane hoisting requirements respectively;

[0040] Specifically, when designing the hoisting scheme for the bow section of the windshield, the hoisting points need to be arranged based on relevant data such as weight and center of gravity. The width of the bow section of the windshield is small, and the windshield has a large linear shape, which blocks part of the bow mooring deck. Therefore, the hoisting points need to be partially designed on the windshield. For the bow section of the windshield, if Figure 7 As shown, a group of tail lifting points 9 are set on the tail end of the bow mooring deck, a group of bow lifting points 11 are set on the head end of the wind shield, and a group of lifting and leveling lifting points 10 are set on the middle part of the bow mooring deck. When designing the lifting scheme of the tail section of the wind shield, it is necessary to arrange the lifting points according to relevant data such as weight and center of gravity. The tail section of the wind shield is short in length and wide in width. All the lifting points can be arranged on the bow mooring deck to reduce the difficulty of lifting point design and installation. Figure 6 As shown, a hoisting point 12 at the port end of the aft section, a hoisting point 13 at the port end of the aft section, and a hoisting point 14 at the starboard end of the aft section are provided on the mooring deck;

[0041] S4, closing stage: by hoisting, the tail section and the bow section of the windshield are closed with the main hull in turn, and the closing and installation work is completed; first, the tail section of the windshield is hoisted and closed, and after the relevant support and welding work is completed, the bow section of the windshield is closed; specifically, Figure 10 、 11 As shown, the wind shield tail section, the wind shield bow section and the container ship main hull 24 are successively closed; Figure 12 As shown, Figure 12 This is a cross-sectional diagram of the temporary support after the closure of the windshield tail section and the windshield bow section. As can be seen from the figure, the bottom of the container ship's main hull is supported by the section support fixture 25;

[0042] S5, adjustment stage: During the closing stage, it is necessary to adjust the misalignment between the closing seams of the windshield head section and the windshield tail section;

[0043] Specifically, during the division phase, the bow mooring deck area and bulwark are divided. When the divided bow mooring deck and bulwark can be assembled into two sections, the fore and aft:

[0044] like Figure 13 As shown, when the bow mooring deck area is divided, the integrity of the anchor chain locker 26, the anchor chain pipe and the anchor platform 27 are ensured after the division; when the bulwark is divided into sections, the bulwark section seam is ensured to be at the same position as the bow mooring deck section seam, or the bulwark section seam is ensured to be closer to the stern than the bow mooring deck section seam, and the bulwark section seam is ensured to be vertical or inclined toward the stern; when the windshield is divided into sections, the section seam between the front and rear parts of the windshield is ensured to be at the same position as the bulwark section seam, or the windshield section seam is ensured to be closer to the stern than the bulwark section seam, and the windshield section seam is ensured to be vertical or inclined toward the stern. With this design, the aft section of the windshield is assembled first, followed by the bow section, making assembly more convenient.

[0045] Specifically, at the general group stage, Figure 8 、 9 As shown, a first steel column 18 is arranged on the bow mooring deck. The first steel column acts on the hull through a fulcrum member 20 and is used to support the windshield in the assembly stage. The supporting structure can be removed before hoisting. A second steel column 19 and a bottom support box 21 of the overall section are arranged on the ground of the overall assembly platform. The second steel column acts on the hull through a fulcrum member 20 and is used to support the bow mooring deck area in the assembly stage. The bottom support box 21 of the overall section is used to support the mooring deck. The above-mentioned supporting structure can be removed before hoisting. It should be noted that, if Figure 9 As shown, the fulcrum member 20 may be a member of other structural forms, as long as it can achieve stable contact with the hull.

[0046] The wind shield lifting ears are added near the closing seam between the wind shield head section and the wind shield tail section to adjust the misalignment between the wind shields during the closing stage; the structures on both sides of the closing seam between the wind shield head section and the wind shield tail section are weak, and the construction height in the dock is extremely high. During the closing and positioning stage, the adjustment wire rope 28 and the wire rope connecting device 29 are added. Figure 4 、 5 As shown, the wire rope connecting device can be a marine lifting eye.

[0047] In summary, this embodiment provides a method for assembling modular windshields of large container ships. First, the bow mooring deck area, bulwarks, and windshields are divided. During the division, the positions of the bulwark segment seams and the bow mooring deck segment seams are reasonably matched to ensure a reasonable positional relationship between the windshield segment seams and the bulwark segment seams, thus preparing for subsequent assembly and closure. In the assembly stage, the construction and assembly of the bow mooring deck segment are completed first in a bottom-up order, and then the bulwark segment seams are assembled. Carry out the assembly of the bulwark sections, arrange the steel pillars on the bow mooring deck, then connect the windbreak sections with the assembled parts, complete the assembly of the windbreak sections, and remove the steel pillars before hoisting the sections; during the hoisting stage, arrange the lifting points according to the weight and center of gravity data of the bow and stern sections of the windbreak; during the closing stage, first hoist and close the stern section of the windbreak, complete the support and welding work, ensure its stability, and then close the bow section of the windbreak.

[0048] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents; such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for assembling modular windshields for large container ships, characterized in that: The method comprises the following steps: Division stage: The bow mooring deck area and bulwark are divided. After the division, the bow mooring deck and bulwark can be assembled into two sections, the front and the rear. The windshield is divided into several sections. The sections of the windshield can be assembled into two parts, the front and the rear. Assembly stage: The forward section of the bow mooring deck area, the forward section of the bulwark, and the forward section of the windbreak are assembled sequentially from bottom to top, forming the forward section of the windbreak. The aft section of the bow mooring deck area, the aft section of the bulwark, and the aft section of the windbreak are assembled sequentially from bottom to top, forming the aft section of the windbreak. During the assembly stage, steel pillars are arranged on the bow mooring deck. The steel pillars act on the hull through fulcrum components to support the windbreak during the assembly stage. Hoisting stage: Design the hoisting schemes for the windshield head section and the windshield tail section to ensure they meet the crane hoisting requirements; Closing stage: The aft section and the bow section of the windshield are hoisted and assembled with the main hull in sequence, and the installation work is completed; Adjustment stage: During the closing stage, it is necessary to adjust the misalignment between the closing seams of the windshield's head section and the windshield's tail section; During the division phase, the bow mooring deck area and bulwark are divided. When the divided bow mooring deck and bulwark can be assembled into two sections, the forward and rear sections: When dividing the bow mooring deck area, ensure that the chain locker is intact after the division, and ensure that the chain pipe and anchor platform are intact after the division; when dividing the bulwark into sections, ensure that the bulwark section seam is at the same position as the section division of the bow mooring deck area, or ensure that the bulwark section seam is closer to the stern than the section seam of the bow mooring deck area, and the bulwark section seam is vertical or inclined towards the stern; When the windshield is divided into sections, the total section seam of the front and rear parts of the windshield is at the same position as the total section seam of the bulwark, or the total section seam of the windshield is closer to the stern than the total section seam of the bulwark, and at the same time, the total section seam of the windshield is ensured to be vertical or inclined toward the stern.

2. The method for assembling and constructing submodules of a large container ship windshield according to claim 1, characterized in that: During the hoisting stage, for the bow section of the wind shield, a tail hoisting point is set on the tail end of the bow mooring deck, a bow hoisting point is set on the bow end of the wind shield, and a hoisting and leveling hoisting point is set on the middle part of the bow mooring deck.

3. The method for assembling and constructing submodules of a large container ship windshield according to claim 1, characterized in that: During the hoisting stage, for the aft section of the windshield, a port aft end hoisting point, a port bow end hoisting point and a starboard side hoisting point are set on the mooring deck.

4. The method for assembling and constructing submodules of a large container ship windshield according to claim 1, characterized in that: During the adjustment stage, when adjusting the misalignment between the closing seams of the windshield head section and the windshield tail section, the closing seams are adjusted using wire ropes and wire rope connecting devices.

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