A method of construction of a multi-deck marine vessel

Abstract

This application relates to the field of shipbuilding technology and discloses a construction method for a multi-deck ship. The method includes: S1 manufacturing and assembling the bottom, sides, and base deck into a base hull; S2 setting up support components on the base deck and fabricating the upper deck on the support components, with S2 completed in a dry dock; S3 towing the base hull and upper deck together from the dry dock across bridges along the route to the delivery destination; S4 lifting the upper surface of the upper deck to the designed height value; S5 leveling the upper surface of the upper deck; S6 aligning and fixing the upper deck; S7 installing columns and side plates between the upper deck and the base deck; and S8 fixing and welding the upper deck to the sides. The entire construction process is simple, does not require large lifting equipment, and has a short construction cycle.

Description

Technical Field

[0001] This application relates to the field of shipbuilding technology, and in particular to a method for constructing multi-deck ships. Background Technology

[0002] In ship structure, the deck is an important component of the hull. It is a planar structure located above the inner bottom plate, used to cover the internal space of the ship and horizontally divide it into layers. The deck is a steel plate on the beam that can divide the hull into multiple layers. In the hull structure, the multiple decks are composed of the first deck, the second deck, and the third deck from bottom to top.

[0003] Multi-deck vessels are tall, and if there is a bridge between the dock and the delivery destination, the upper deck of the vessel cannot pass under the bridge if the hull height exceeds the bridge. In this case, the vessel cannot be manufactured as a whole in the dock. The relevant technology adopts the method of first manufacturing the hull, bottom plate, and basic deck that can pass under the bridge. After the unfinished vessel passes under the bridge, the upper deck is manufactured. The necessary lifting equipment, steel plates for producing the upper deck, and other raw materials such as ship beams are transported to the construction site by construction vessels before the upper deck is built. The entire construction process of the vessel is complex and the construction period is long.

[0004] Regarding the aforementioned technologies, the inventors believe that the construction of multi-deck ships suffers from drawbacks such as complex processes and long construction cycles. Summary of the Invention

[0005] To address the issues of complex construction processes and long construction periods in the building of multi-deck vessels, this application provides a construction method for multi-deck vessels, the specific method of which is as follows: A method for constructing a multi-deck vessel includes: Step S1, manufacturing and assembling the hull bottom, sides, and base deck into a base hull; Step S2, installing support members on the base deck and constructing an upper deck on the support members, wherein the upper surface of the upper deck is high enough to be crossed by a bridge between the dry dock and the delivery destination, and Step S2 is completed in the dry dock; Step S3, towing the base hull and the upper deck together from the dry dock across the bridges along the route to the delivery destination; Step S4, lifting the upper surface of the upper deck to the designed height value; Step S5, leveling the upper surface of the upper deck; Step S6, aligning and fixing the upper deck; Step S7, installing columns and side plates between the upper deck and the base deck; Step S8, fixing and welding the upper deck to the sides.

[0006] By adopting the above technical solution, the basic hull is manufactured in the dock, support components are installed on the basic hull, and the upper deck is manufactured as a whole on the support components. The height of the upper deck is lower than the height of the bridge between the dock and the delivery destination. The basic hull and the upper deck are towed across the bridge along the way. Then, the upper deck is lifted, leveled, aligned and fixed. Finally, the columns, side plates and sides are welded to complete the manufacturing of the entire ship. The entire construction process is simple, does not require large lifting equipment, and has a short construction period.

[0007] Optionally, the height of the support member in step S2 is 50cm to 100cm.

[0008] By adopting the above technical solution, the height of the support component is 50cm to 100cm, which greatly reduces the height of the upper deck and facilitates the passage of the upper deck through bridges along the route from the dock to the delivery destination. At the same time, the support component has a certain height, which facilitates the installation of jacking devices and subsequent jacking operations on the upper deck.

[0009] Optionally, in step S4, before lifting the upper deck, the following steps are performed: placing a lifting device for lifting the upper deck between the base deck and the upper deck; and installing at least four traction mechanisms for adjusting the position of the upper deck between the base deck and the upper deck.

[0010] By adopting the above technical solution, a lifting device is installed between the base deck and the upper deck, which facilitates the lifting of the upper deck to the design position, avoids the use of large lifting equipment, and saves construction costs. At least four traction mechanisms are installed between the base deck and the upper deck, which tighten the upper deck around the base deck to prevent the upper deck from shifting during the lifting process, ensuring the stability of the lifting process. At the same time, it is convenient to align and position the upper deck in the future.

[0011] Optionally, the lifting device includes four sets of airbag assemblies respectively located at the center of the port side, the center of the starboard side, the center of the bow, and the center of the stern, and also includes a centralized air supply package connected to the four sets of airbag assemblies respectively through pipelines and valves, and an air compressor connected to the centralized air supply package through pipelines and valves.

[0012] By adopting the above technical solution, the four airbag assemblies are respectively positioned at the center of the port side, the center of the starboard side, the center of the bow, and the center of the stern, so that the four airbags support the upper deck relatively evenly. The airbags have low manufacturing cost, large contact area with the upper deck, and can absorb the impact of waves on the hull. They also help to keep the upper deck stable during the lifting process. The four airbag assemblies are connected to a centralized air supply manifold through pipelines and valves, which facilitates the control of the air supply to each airbag and makes the inflation height of each airbag uniform. The air compressor is connected to the centralized air supply manifold through pipelines and valves and supplies air to the centralized air supply manifold, ensuring that there is a sufficient air source when the centralized air supply manifold supplies air to the airbag assemblies.

[0013] Optionally, the airbag assembly is a cylindrical airbag, which is arranged laterally along the bow and stern direction at the bow and stern positions, and longitudinally along the bow and stern direction at the port and starboard positions. The airbag is connected to the centralized air supply package via a pressure gauge, an air supply valve, and a pipeline.

[0014] By adopting the above technical solution, cylindrical airbags are arranged transversely at the bow and stern and longitudinally on the port and starboard sides. The staggered arrangement of the airbags in the transverse and longitudinal directions helps to prevent the airbags from rolling during the lifting of the upper deck. The airbags are connected to the centralized air supply package through pressure gauges, air supply valves and pipelines. During the expansion of the airbags, the air intake is adjusted by controlling the air intake pressure of the airbags, which helps to ensure the consistency of the expansion height of the four sets of airbags, thereby enabling the upper deck to be lifted smoothly.

[0015] Optionally, the airbag assembly consists of two cylindrical airbags stacked one on top of the other. The lower airbag is positioned below the upper airbag, and the upper airbag is stacked on top of the lower airbag. The diameter of the lower airbag is larger than that of the upper airbag. The lower and upper airbags are arranged laterally along the bow and stern direction at the bow and stern positions, and longitudinally along the bow and stern direction at the port and starboard positions. The lower airbag is connected to the centralized air supply circuit via a pressure gauge, an air supply valve, and a pipeline, and the upper airbag is connected to the centralized air supply circuit via a pressure gauge, an air supply valve, and a pipeline.

[0016] By adopting the above technical solution, the lower airbag and the upper airbag are stacked together to lift the upper deck, which is conducive to raising the upper deck to the target height. The lower airbag and the upper airbag are respectively connected to the air circuit of the centralized air supply bag through pressure gauges, air supply valves and pipelines. This allows the air intake volume to be adjusted by controlling the airbag intake pressure during the expansion process of the lower airbag and the upper airbag, and also utilizes the consistency of the expansion height of the four sets of airbags, thereby enabling the upper deck to be lifted smoothly.

[0017] Optionally, an airbag liner is provided between the airbag and the upper deck. The airbag liner has folded edges on both sides along the length of the airbag, and blocks are provided on both sides of the airbag on the base deck along the length of the airbag to prevent the airbag from rolling.

[0018] By adopting the above technical solution, an airbag liner is provided between the airbag and the upper deck, which helps to increase the contact area between the airbag and the upper deck, prevent the deck beam from damaging the airbag, and the folded edge of the airbag liner helps to prevent the airbag from rolling. A stop block is provided on the base deck to help prevent the airbag from rolling and improve the stability of the upper deck lifting.

[0019] Optionally, the lifting device further includes a plurality of pier groups for supporting the upper deck during the lifting process. The plurality of pier groups are supported on the base deck and are arranged at intervals along the periphery of the inner edge of the base deck.

[0020] By adopting the above technical solution, multiple pad blocks are set up around the inner edge of the base deck during the lifting process of the upper deck, which helps to prevent safety accidents when lifting the upper deck.

[0021] Optionally, the pad assembly includes a high pad and multiple low pads. The high pad is supported on the base deck, and the multiple low pads are stacked sequentially on the high pad or on the base deck according to the rising height of the upper deck.

[0022] By adopting the above technical solution, when the upper deck is raised to a lower height, multiple low pad blocks are stacked on the base deck in sequence. When the upper deck is raised to a higher height, high pad blocks are supported on the base deck, and low pad blocks are stacked on top of high pad blocks in sequence. As the height of the upper deck increases throughout the lifting process, the height of the pad block group is increased accordingly, which is beneficial to the safety of the upper deck operation during the entire lifting process.

[0023] Optionally, the pulling mechanism is a lifting chain, which is fixed to the upper deck, and the lifting hook of the lifting chain is fixed to the base deck. The fixing points of the lifting chain and the lifting hook are inclined, and at least four lifting chains are arranged at intervals on the upper deck and the base deck.

[0024] By adopting the above technical solution, the lifting chains around the upper deck during the jacking process can be appropriately loosened according to the tension of the chains, so as to keep the upper deck from moving during the jacking process, while not hindering the jacking of the upper deck. When the position of the upper deck is not correct, the position of the upper deck can be adjusted by tightening and loosening the lifting chains around the upper deck. The operation process is simple and reliable.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The basic hull is constructed in the dock, and supporting components are installed on the basic hull. The upper deck is then manufactured as a whole on the supporting components. The height of the upper deck is lower than the height of the bridge between the dock and the delivery destination. The basic hull and the upper deck are towed across the bridge along the way. Then, the upper deck is lifted, leveled, aligned and fixed. Finally, the columns, side plates and sides are welded to complete the manufacturing of the entire ship. The entire construction process is simple, does not require large lifting equipment, and has a short construction period.

[0026] 2. The support components are 50cm to 100cm high, which greatly reduces the height of the upper deck, making it easier for the upper deck to pass under bridges along the route from the dock to the delivery destination. At the same time, the support components have a certain height, which makes it easy to install jacking devices and facilitates subsequent jacking operations on the upper deck.

[0027] 3. A jacking device is installed between the base deck and the upper deck to facilitate the lifting of the upper deck to the designed position, avoiding the use of large lifting equipment and saving construction costs. At least four traction mechanisms are installed between the base deck and the upper deck to tighten the upper deck around the base deck, preventing the upper deck from shifting during the jacking process and ensuring the stability of the jacking process. At the same time, it is convenient to align and position the upper deck later.

[0028] 4. The four airbag assemblies are respectively positioned at the center of the port side, the center of the starboard side, the center of the bow, and the center of the stern, so that the four airbags can support the upper deck relatively evenly. The airbags have low manufacturing cost and a large contact area with the upper deck, which can absorb the impact of waves on the hull and help maintain the stability of the upper deck during the lifting process. The four airbag assemblies are connected to a centralized air supply unit through pipelines and valves, which facilitates the control of the air supply to each airbag and makes the inflation height of each airbag uniform. The air compressor is connected to the centralized air supply unit through pipelines and valves and supplies air to the centralized air supply unit to ensure that there is a sufficient air source when the centralized air supply unit supplies air to the airbag assemblies.

[0029] 5. Cylindrical airbags are arranged transversely at the bow and stern, and longitudinally on the port and starboard sides. The staggered arrangement of the airbags in the transverse and longitudinal directions helps to prevent the airbags from rolling during the lifting of the upper deck. The airbags are connected to the centralized air supply package through pressure gauges, air supply valves and pipelines. During the expansion of the airbags, the air intake is adjusted by controlling the air intake pressure of the airbags, which helps to ensure the consistency of the expansion height of the four sets of airbags, thereby making the upper deck lift smoothly.

[0030] 6. The lower and upper airbags are stacked together to lift the upper deck, which helps to raise the upper deck to the target height. The lower and upper airbags are connected to the centralized air supply bag through pressure gauges, air supply valves and pipelines, which helps to adjust the air intake by controlling the air intake pressure during the expansion of the lower and upper airbags. This also helps to ensure the consistency of the expansion height of the four sets of airbags, thereby making the upper deck rise smoothly.

[0031] 7. An airbag liner is installed between the airbag and the upper deck, which helps to increase the contact area between the airbag and the upper deck, prevents the deck beam from damaging the airbag, and the folded edge of the airbag liner helps to prevent the airbag from rolling. There are blocks on the base deck to help prevent the airbag from rolling and improve the stability of the upper deck lifting.

[0032] 8. When the upper deck is raised to a lower height, multiple low pad blocks are stacked on the base deck in sequence. When the upper deck is raised to a higher height, high pad blocks are supported on the base deck, and low pad blocks are stacked on top of high pad blocks in sequence. As the height of the upper deck increases throughout the lifting process, the height of the pad block group is increased accordingly, which is beneficial to the safety of the upper deck operation during the entire lifting process.

[0033] 9. During the lifting process, the lifting chains around the upper deck are loosened appropriately according to the tension of the chains to prevent the upper deck from shifting during the lifting process, while not hindering the lifting of the upper deck. When the position of the upper deck is not correct, the position of the upper deck can be adjusted by tightening and loosening the lifting chains around the upper deck. The operation process is simple and reliable. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the cross-sectional structure of the basic hull and superdeck of this application fabricated in the dock.

[0035] Figure 2 This is a cross-sectional schematic diagram of the jacking device and traction mechanism in the jacking construction of this application.

[0036] Figure 3 for Figure 2 A top view after removing the third deck.

[0037] Figure 4 This is a schematic diagram of the centralized gas supply package structure in this application.

[0038] Figure 5 for Figure 3 AA section view in the image.

[0039] In the picture: 1. Basic hull; 101. Bottom; 102. Side; 103. First deck; 104. Second deck; 2. Third deck; 3. Support components; 4. Lifting device; 41. Airbag assembly; 411. Lower airbag; 412. Upper airbag; 413. Airbag liner; 414. Stop block; 42. Pad assembly; 421. High pad block; 422. Low pad block; 5. Pulling mechanism; 51. Lifting chain; 6. Centralized air supply unit; 61. Pressure gauge; 62. Valve. Detailed Implementation

[0040] The following combination Figures 1 to 5 This application will be described in further detail.

[0041] This application discloses a construction method for multi-deck vessels, referring to... Figure 1 A specific embodiment is a method for implementing a three-deck ship. The deck is an important component of the hull, a planar structure located above the inner bottom plate, used to cover the internal space of the ship and horizontally divide it into layers. The deck is a steel plate on the ship beam, which can divide the hull into multiple layers. In the hull structure, the multiple decks are composed of the first deck 103, the second deck 104 and the third deck 2 from bottom to top. The uppermost deck, which can be manufactured as a whole with the hull in the dock, is the base deck. In this embodiment, it is the second deck 104. The bottom 101, the side 102 and the base deck are manufactured and assembled into the base hull 1. The upper deck is manufactured separately as a whole in the dock. After passing the bridge to the destination, it is lifted to a certain height with the base hull 1, leveled and aligned, and then fixed. The upper deck consists of at least one deck. In this embodiment, it is one deck, namely the third deck 2.

[0042] Reference Figure 1 and Figure 2Step S1: Manufacture and assemble the hull bottom 101, side 102, first deck 103, and second deck 104 into a basic hull 1; Step S2: Install support members 3 on the second deck 104, and construct the third deck 2 on the support members 3, ensuring that the upper surface of the third deck 2 is high enough to be supported by a bridge between the dock and the destination; Step S2 is completed in the dock; Step S3: Tow the basic hull 1 and the third deck 2 together from the dock across the bridges along the delivery route to the destination; Step S4: Lift the upper surface of the third deck 2 to its designed height. Step S5: Level the upper surface of the third deck 2; Step S6: Align and fix the third deck 2; Step S7: Install columns and side plates between the third deck 2 and the second deck 104; Step S8: Fix and weld the third deck 2 to the side hull 102; After the basic hull 1 and the third deck 2 are completed in the dock, they are towed across the bridges along the way. Then, the third deck 2 is lifted, leveled, aligned and fixed. Finally, the columns, side plates and side hull 102 are welded to complete the manufacturing of the entire ship. The entire construction process is simple, does not require large lifting equipment and has a short construction cycle.

[0043] Reference Figure 1 In step S2, the support member 3 is 80cm high, which greatly reduces the height of the third deck 2, making it easier for the third deck 2 to pass through bridges along the way from the dock to the delivery destination. At the same time, the support member 3 also has a certain height, which makes it easy to install the lifting device 4, and facilitates the subsequent lifting operation of the third deck 2.

[0044] Reference Figure 3 In step S4, before lifting the third deck 2, the following steps are performed: placing a lifting device 4 for lifting the third deck 2 between the second deck 104 and the third deck 2; installing six traction mechanisms 5 for adjusting the position of the third deck 2 between the second deck 104 and the third deck 2; setting up the lifting device 4 between the second deck 104 and the third deck 2 facilitates the lifting of the third deck 2 to the designed position, avoids the use of large lifting equipment, and saves construction costs; setting up six traction mechanisms 5 between the second deck 104 and the third deck 2 tightens the third deck 2 around the base deck, preventing the third deck 2 from shifting during the lifting process, ensuring the stability of the lifting process, and facilitating the subsequent alignment and positioning of the third deck 2.

[0045] Reference Figure 3 and Figure 4The lifting device 4 includes four sets of airbag assemblies 41 respectively positioned at the center of the port side, the center of the starboard side, the center of the bow, and the center of the stern. It also includes a centralized air supply unit 6 connected to the four sets of airbag assemblies 41 via pipes and valves, and an air compressor connected to the centralized air supply unit 6 via pipes and valves. The four sets of airbag assemblies 41 are positioned at the center of the port side, the center of the starboard side, the center of the bow, and the center of the stern, respectively, allowing the four sets of airbags to provide relatively even support for the third deck 2. The airbags have low manufacturing costs, a large contact area with the third deck 2, and can absorb the impact of waves on the hull, thus helping to maintain the stability of the third deck 2 during lifting. The four sets of airbag assemblies 41 are connected to the centralized air supply unit 6 via pipes and valves, facilitating control of the air supply to each set of airbags and ensuring that the inflation height of each set of airbags is uniform. The air compressor is connected to the centralized air supply unit 6 via pipes and valves and supplies air to the centralized air supply unit 6, ensuring a sufficient air source when the centralized air supply unit 6 supplies air to the airbag assemblies 41.

[0046] Reference Figure 3 In the first embodiment of the airbag assembly 41 of this application, the airbag assembly 41 is a cylindrical airbag. The airbag is arranged laterally along the bow and stern direction at the bow and stern positions, and longitudinally along the bow and stern direction at the port and starboard positions. The airbag is connected to the air supply package 6 via a pressure gauge 61, an air supply valve, and a pipeline. The staggered arrangement of the airbags laterally and longitudinally helps to prevent the airbags from rolling during the lifting of the third deck 2. The airbag is connected to the air supply package 6 via a pressure gauge 61, an air supply valve, and a pipeline. During the inflation process, the air intake is adjusted by controlling the air intake pressure of the airbag, which helps to ensure the consistency of the inflation height of the four sets of airbags, thereby enabling the third deck 2 to be lifted smoothly.

[0047] Reference Figure 3 and Figure 4In a second embodiment of the airbag assembly 41 of this application, the airbag assembly 41 consists of two cylindrical airbags stacked one on top of the other. The lower airbag 411 is located below the upper airbag 412. The diameter of the lower airbag 411 is larger than that of the upper airbag 412. The lower airbag 411 and the upper airbag 412 are arranged laterally along the bow and stern direction at the bow and stern positions, and longitudinally along the bow and stern direction at the port and starboard sides. The lower airbag 411 is connected to the centralized air supply unit 6 via a pressure gauge 61, an air supply valve 62, and a pipeline. The upper airbag 412 is connected to the centralized air supply unit 6 via a pressure gauge 61, an air supply valve 62, and a pipeline. The air supply valve 62 and pipeline are connected to the air supply circuit of the centralized air supply unit 6; the lower airbag 411 and the upper airbag 412 are stacked together to lift the third deck 2, which is conducive to raising the third deck 2 to the target height. The lower airbag 411 and the upper airbag 412 are connected to the air supply circuit of the centralized air supply unit 6 through the pressure gauge 61, the air supply valve 62 and the pipeline, respectively. This is conducive to adjusting the air intake by controlling the air intake pressure of the lower airbag 411 and the upper airbag 412 during the expansion process, and to utilizing the consistency of the expansion height of the four sets of airbags, thereby making the third deck 2 rise smoothly.

[0048] Reference Figure 5 An airbag liner 413 is provided between the airbag and the third deck 2. The airbag liner 413 has folded edges on both sides along the length of the airbag. On the second deck 104, there are blocks 414 on both sides of the airbag along the length of the airbag to prevent the airbag from rolling. The airbag liner 413 between the airbag and the third deck 2 helps to increase the contact area between the airbag and the third deck 2, preventing the deck beam from damaging the airbag. The folded edges of the airbag liner 413 help to prevent the airbag from rolling. The blocks 414 on the second deck 104 help to prevent the airbag from rolling and improve the stability of the lifting of the third deck 2.

[0049] Reference Figure 2 and Figure 3 The lifting device 4 also includes ten blocks 42 for supporting the third deck 2 during the lifting process. The ten blocks 42 are supported on the second deck 104 and are arranged at intervals along the inner edge of the second deck 104. During the lifting process of the third deck 2, the ten blocks 42 are supported around the inner edge of the second deck 104, which helps to prevent safety accidents when lifting the third deck 2.

[0050] Reference Figure 2The support block assembly 42 includes a high support block 421 and two low support blocks 422. The high support block 421 is supported on the second deck 104. The two low support blocks 422 are stacked on the high support block 421 or the second deck 104 in sequence according to the rising height of the third deck 2. When the rising height of the third deck 2 is relatively low, the low support blocks 422 are stacked on the second deck 104 in sequence. When the rising height of the third deck 2 is relatively high, the high support block 421 is supported on the second deck 104, and the low support blocks 422 are stacked on the high support block 421 in sequence. As the height of the third deck 2 increases throughout the lifting process, the height of the support block assembly 42 is increased accordingly, which is beneficial to the safety of the operation of the third deck 2 throughout the lifting process.

[0051] Reference Figure 2 and Figure 3 The traction mechanism 5 is a lifting chain 51, which is fixed to the third deck 2. The lifting hook of the lifting chain 51 is fixed to the second deck 104. The fixing points of the lifting chain 51 and the lifting hook are set at an angle. Four lifting chains 51 are arranged at intervals on the third deck 2 and the second deck 104. During the lifting process, the lifting chains 51 around the third deck 2 are appropriately loosened according to the tension of the chain to keep the third deck 2 from moving during the lifting process, while not hindering the lifting of the third deck 2. When the position of the third deck 2 is not correct, it can be adjusted by tightening and loosening the lifting chains 51 around the third deck 2. The operation is simple and reliable.

[0052] The specific working process of a multi-deck ship construction method is as follows: Step S1, the bottom 101, side 102, first deck 103, and second deck 104 are manufactured and assembled into a basic hull 1; Step S2, support members 3 are installed on the second deck 104, and a third deck 2 is constructed on the support members 3, the upper plane of the third deck 2 being high enough to be supported by a bridge between the dock and the destination, and Step S2 is completed in the dock; Step S3, the basic hull 1 and the third deck 2 are towed together from the dock across the bridges along the delivery destination; Step S4, the airbag assembly 41 is inflated to lift the third deck 2, and during the lifting process, the tensioned lifting chain 51 is gradually loosened, and a support block assembly 42 is placed between the second deck 104 and the third deck 2. According to the lifting height of the third deck 2, the height of the pier group 42 is gradually adjusted until the upper plane of the third deck 2 is lifted to the designed height value of the upper plane of the third deck 2; step S5, the upper plane of the upper deck is leveled; step S6, by tightening the lifting chain 51 on one side and loosening the lifting chain 51 on the corresponding side, the third deck 2 is aligned and fixed; step S7, columns and side plates are installed between the third deck 2 and the second deck 104; step S8, the third deck 2 is fixedly welded to the side hull 102. After the basic hull 1 and the third deck 2 are completed in the dock, they are towed across the bridges along the way. Then, the third deck 2 is lifted, leveled, aligned and fixed. Finally, the columns, side plates and side hull 102 are welded to complete the manufacturing of the entire ship.

[0053] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the methods, processes, principles, structures, and shapes of this application should be covered within the scope of protection of this application.

Claims

1. A method for constructing a multi-deck vessel, the method comprising: Step S1: The bottom (101), sides (102) and basic deck are manufactured and assembled into the basic hull (1); Its features are: Step S2: Install support member (3) on the base deck, and manufacture an upper deck on the support member (3). The upper plane height of the upper deck is sufficient to pass through the bridge between the dock and the delivery destination. Step S2 is completed in the dock. Step S3: The basic hull (1) and the upper deck are towed together from the dock and across the bridges along the way to the delivery destination; Step S4: Raise the upper deck surface to the designed height value of the upper deck surface; Step S5: Level the upper deck surface; Step S6: Align and secure the upper deck. Step S7: Install columns and side panels between the upper deck and the base deck; Step S8: Fix and weld the upper deck to the side (102); In step S4, before lifting the upper deck, the following steps are performed: The steps of placing a lifting device (4) for lifting the upper deck between the base deck and the upper deck; The step of installing at least four traction mechanisms (5) between the base deck and the upper deck for adjusting the position of the upper deck; The lifting device (4) includes four sets of airbag assemblies (41) respectively located at the center of the port side, the center of the starboard side, the center of the bow, and the center of the stern. It also includes a centralized air supply bag (6) connected to the four sets of airbag assemblies (41) respectively through pipes and valves (62), and an air compressor connected to the centralized air supply bag (6) through pipes and valves (62). The pulling mechanism (5) is a chain (51). The chain (51) is fixed on the upper deck, and the lifting hook of the chain (51) is fixed on the base deck. The fixing point of the chain (51) and the fixing point of the lifting hook are set at an angle. At least four chains (51) are arranged at intervals on the upper deck and the base deck. The chains (51) around the third deck (2) during the lifting process are loosened appropriately according to the tension of the chain. When the position of the third deck (2) is not correct, it can be adjusted by tightening and loosening the chains (51) around the third deck (2).

2. The construction method for a multi-deck ship according to claim 1, characterized in that: The height of the support member (3) in step S2 is 50cm to 100cm.

3. The construction method for a multi-deck ship according to claim 1, characterized in that: The airbag assembly (41) is a cylindrical airbag. The airbag is arranged laterally along the bow and stern direction at the bow and stern positions, and longitudinally along the bow and stern direction at the port and starboard positions. The airbag is connected to the air supply package (6) via a pressure gauge (61), an air supply valve (62), and a pipeline.

4. The construction method for a multi-deck ship according to claim 1, characterized in that: The airbag assembly (41) consists of two cylindrical airbags stacked one on top of the other. The lower airbag (411) is placed below the upper airbag (412). The diameter of the lower airbag (411) is larger than that of the upper airbag (412). The lower airbag (411) and the upper airbag (412) are arranged laterally along the bow and stern direction at the bow and stern positions, and longitudinally along the bow and stern direction at the port and starboard positions. The lower airbag (411) is connected to the air supply circuit of the centralized air supply package (6) through a pressure gauge (61), an air supply valve (62), and a pipeline. The upper airbag (412) is connected to the air supply circuit of the centralized air supply package (6) through a pressure gauge (61), an air supply valve (62), and a pipeline.

5. A method for constructing a multi-deck ship according to claim 3 or 4, characterized in that: An airbag liner (413) is provided between the airbag and the upper deck. The airbag liner (413) has folded edges on both sides along the length of the airbag. On the base deck, there are blocks (414) on both sides of the airbag along the length of the airbag to prevent the airbag from rolling.

6. The construction method for a multi-deck ship according to claim 1, characterized in that: The lifting device (4) also includes a plurality of pier groups (42) for supporting the upper deck during the lifting process. The plurality of pier groups (42) are supported on the base deck and are arranged at intervals along the periphery of the inner edge of the base deck.

7. A method for constructing a multi-deck ship according to claim 6, characterized in that: The pad assembly (42) includes a high pad (421) and a plurality of low pads (422). The high pad (421) is supported on the base deck, and the plurality of low pads (422) are stacked on the high pad (421) or the base deck in sequence according to the rising height of the upper deck.

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