Balanced lifting tooling and lifting method for large-sized thin plate sub-assemblies of cruise ships

Abstract

The present invention discloses a balance lifting and arranging tooling and a lifting method for use with large-sized thin plate sub-assemblies of a cruise ship. The balance lifting and arranging tooling for use with large-sized thin plate sub-assemblies of a cruise ship includes: a body having a long side and a short side, and a lower trolley hook is provided at the central position of the top end of the body; a plurality of pairs of fixed pulley groups are arranged at intervals along the long side at the lower end of the body, and each of the fixed pulley groups includes at least two fixed pulleys arranged at intervals along the short side; a plurality of lifting components, including a plurality of lifting lugs and a plurality of steel wire ropes. The plurality of lifting lugs can be fixed on the thin plate sub-assembly to enclose and form a lifting point area. One of the steel wire ropes is wound around each of the fixed pulleys, and each of the lifting lugs can be connected to the free end of the steel wire rope to jointly cooperate in lifting the thin plate sub-assembly; wherein, the length of the body is 14 meters to 18 meters.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and particularly relates to a balanced lifting beam tooling and a lifting method for large-sized thin-plate sections of a cruise ship. Background Art

[0002] The structural form of a large cruise ship generally includes a thin-plate deck grillage, an outer plate grillage, columns, internal longitudinal and transverse bulkheads, main vertical zone transverse bulkhead grillages, etc. For details, please refer to Figure 4 During the construction, lifting process, and when forming the whole ship, it is required that structures such as the longitudinal ribs of the outer plate grillage, the thin-plate deck grillage, and the internal longitudinal bulkheads have sufficient longitudinal strength and stiffness, that structures such as the cross beams of the thin-plate deck grillage, the internal transverse bulkheads, and the main vertical zone transverse bulkhead grillages have sufficient transverse strength and stiffness, and that structures such as the outer plate grillage, columns, internal longitudinal and transverse bulkheads, and main vertical zone transverse bulkhead grillages have sufficient vertical strength and stiffness.

[0003] Except for the use of thick plates for the outer plates, a large amount of thin plates and small-sized stiffeners are used in the cruise ship structure. Coupled with the cross beam spacing of the deck grillage being about 3 meters and the spacing between the main grillages being sparse, the longitudinal, transverse strength and stiffness of the thin-plate structure of the cruise ship are weak.

[0004] In the later stage of cruise ship construction, each section needs to be lifted. However, with the development of cruise ships, their size and tonnage are getting larger and larger. Especially for large-sized thin-plate sections of a cruise ship (referring to sections with a length of 20 meters to 35 meters, a width of 35 meters to 50 meters, a height of 10 meters to 20 meters, and a total weight of 500 tons to 750 tons), the previous lifting tools and lifting methods are difficult to meet the corresponding requirements. Therefore, it is urgent to optimize the design of the corresponding lifting tools and lifting methods. Summary of the Invention

[0005] The purpose of the present invention is to provide a balanced lifting beam tooling and a lifting method for large-sized thin-plate sections of a cruise ship, so as to solve the problems of difficult lifting of thin-plate sections by using a single gantry crane and uneven force in the prior art.

[0006] The above object of the present invention can be achieved by the following technical solutions:

[0007] The present invention provides a balanced lifting and arranging tool for large-sized thin plate sub-assemblies of a cruise ship, comprising: a main body having a long side and a short side, and a lower trolley hook is provided at the center position of the top end of the main body; a plurality of pairs of fixed pulley groups are arranged at intervals along the long side at the lower end of the main body, and each fixed pulley group comprises at least two fixed pulleys arranged at intervals along the short side; a plurality of lifting assemblies, including a plurality of lifting lugs and a plurality of steel wire ropes, the plurality of lifting lugs can be fixed on the large-sized thin plate sub-assembly to form a lifting point area by surrounding, and one steel wire rope is wound around each fixed pulley, and each lifting lug can be connected to the free end of the steel wire rope to cooperate to lift the large-sized thin plate sub-assembly together; wherein, the length of the main body is 14 meters to 18 meters.

[0008] Preferably, the length of the steel wire rope is 15 meters to 20 meters.

[0009] Preferably, the length of the lifting point area is 50% to 70% of the length of the large-sized thin plate sub-assembly.

[0010] Preferably, the width of the lifting point area is 50% to 70% of the half-width of the large-sized thin plate sub-assembly.

[0011] Preferably, each lifting lug is arranged corresponding to the strong frame position of the large-sized thin plate sub-assembly.

[0012] Preferably, the number of fixed pulleys in each fixed pulley group is two.

[0013] The present invention also provides a lifting method for lifting large-sized thin plate sub-assemblies of a cruise ship, comprising: generating large-sized thin plate sub-assemblies according to the lifting capacity of a single gantry crane and the main dimensions of the cruise ship; dividing the large-sized thin plate sub-assemblies into two ring segments along the ship length direction according to the building capacity of the thin plate section production line; respectively leveling the deck surface and pre-fitting outfitting for the two ring segments to form a first ring segment and a second ring segment; butting the first ring segment and the second ring segment into one body to form the large-sized thin plate sub-assembly; respectively arranging two conventional lifting and arranging tools and the balanced lifting and arranging tool for large-sized thin plate sub-assemblies of a cruise ship according to any one of claims 1 to 6 on both sides of the hull center line of the large-sized thin plate sub-assembly; using the single gantry crane to lift the upper trolley hook in the conventional lifting and arranging tool and the lower trolley hook in the balanced lifting and arranging tool simultaneously to complete the lifting of the large-sized thin plate sub-assembly; wherein, the width of the large-sized thin plate sub-assembly is the same as the width of the cruise ship, and the distance between the two conventional lifting and arranging tools and the balanced lifting and arranging tool is 4 meters to 12 meters.

[0014] Preferably, the two conventional lifting and arranging tools are arranged at intervals along the ship length direction, and each lifting lug in each conventional lifting and arranging tool is arranged corresponding to the strong frame position of the large-sized thin plate sub-assembly.

[0015] Preferably, the length of the coverage area of each of the conventional lifting and arranging tools is 6 meters to 8 meters, the width of the coverage area of each of the conventional lifting and arranging tools is 10 meters to 16 meters, and the interval between the coverage areas of the two conventional lifting and arranging tools is 6 meters to 12 meters.

[0016] Preferably, the length of the coverage area of the balanced lifting and arranging tool is 20 meters to 25 meters, and the width of the coverage area of the balanced lifting and arranging tool is 10 meters to 16 meters.

[0017] The present invention can solve the problem that it is difficult for a single gantry crane to lift a large-sized thin plate subassembly, and the present invention can avoid problems such as excessive local stress and serious deformation during the hoisting of various large-sized thin plate subassemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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. 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 based on these drawings.

[0019] Figure 1 It is a hoisting schematic diagram of the large-sized thin plate subassembly of the cruise ship of the present invention;

[0020] Figure 2 It is a front view of the balanced lifting and arranging tool used for the large-sized thin plate subassembly of the cruise ship of the present invention;

[0021] Figure 3 It is a side view of the balanced lifting and arranging tool used for the large-sized thin plate subassembly of the cruise ship of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the large-sized thin plate subassembly of the cruise ship of the present invention;

[0023] Figure 5 It is a flow block diagram of the hoisting method of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] Embodiment 1

[0026] The present invention provides a balanced lifting and arranging tool for a large-sized thin plate subassembly of a cruise ship. Please refer to Figures 1 to 3, including a main body, multiple pairs of fixed pulley sets, and multiple lifting components.

[0027] Specifically, the main body (i.e., the lifting beam) has a long side and a short side, and a lower trolley hook is provided at the center position of the top end of the main body; multiple pairs of fixed pulley sets are arranged at intervals along the long side of the main body at the lower end, and each fixed pulley set includes at least two fixed pulleys arranged at intervals along the short side of the main body; the multiple lifting components include multiple lifting lugs and multiple steel wire ropes. The multiple lifting lugs can be fixed on the overall thin plate section to enclose and form a lifting point area. A steel wire rope is wound around each fixed pulley, and each lifting lug can be connected to the free end of the steel wire rope to cooperate in lifting the overall thin plate section together; wherein, the length of the main body is 14 meters to 18 meters.

[0028] In some embodiments, please refer to Figures 1 to 3 , the length of the steel wire rope is 15 meters to 20 meters.

[0029] In other embodiments, the length of the lifting point area is 50% to 70% of the length of the overall thin plate section, and the width of the lifting point area is 50% to 70% of half of the width of the overall thin plate section.

[0030] Furthermore, each lifting lug is arranged corresponding to the strong frame position of the overall thin plate section. By adopting this method, the present invention can ensure that the force during the lifting process is more stable and uniform.

[0031] In some embodiments, please refer to Figures 1 to 3 , the number of fixed pulleys in each fixed pulley set is two.

[0032] The length of the balanced lifting beam tooling of the present invention is relatively large, and a double-row pulley is arranged along the ship length direction under the lifting beam. When configuring a shorter steel wire rope, it can still ensure that the steel wire rope below the pulley can fully open in the ship length direction and the ship width direction, so that the lifting lugs connected to the steel wire rope under a single lifting point of the lower trolley hook can be evenly arranged within the half-width range of the overall section.

[0033] Meanwhile, according to the self-weight and height of the lifting beam, it can lift the largest-size overall thin plate section of a large cruise ship, so as to lift the topmost overall section of the cruise ship. There are many fixed pulleys in the lifting beam, which can connect more steel wire ropes and lifting lugs, solving the problem of large local stress in the thin plate structure caused by the large load-bearing of a single lifting lug. The length of the lifting beam is relatively long, avoiding the problem of lateral stress concentration of the lifting lug and the thin plate structure caused by a large angle of the steel wire rope along the ship length direction; the balanced lifting beam can avoid the problem of large local stress on a single lifting lug caused by the eccentricity of the actual center of gravity of the overall section; this lifting method of a single gantry crane and the balanced lifting beam can ensure the lifting of various large-size overall thin plate sections.

[0034] Embodiment 2

[0035] The present invention also provides a lifting method for lifting the large-size overall thin plate section of a cruise ship. Please refer to Figure 5 , including:

[0036] S1. Generate the thin-plate sub-assemblies according to the lifting capacity of a single gantry crane and the main dimensions of the cruise ship.

[0037] S2. Divide the thin-plate sub-assemblies into two ring sections along the ship length direction according to the construction capacity of the thin-plate section production line.

[0038] S3. Level the deck surface and perform pre-fitting-out on the two ring sections respectively to form the first ring section and the second ring section.

[0039] S4. Join the first ring section and the second ring section together to form the thin-plate sub-assembly.

[0040] S5. Arrange two conventional lifting spreader tools and the balance lifting spreader tool for large-size thin-plate sub-assemblies of a cruise ship according to any one of claims 1 to 6 on both sides of the centerline of the hull of the thin-plate sub-assembly.

[0041] S6. Use a single gantry crane to lift the upper trolley hook of the conventional lifting spreader tool and the lower trolley hook of the balance lifting spreader tool simultaneously to complete the lifting of the thin-plate sub-assembly.

[0042] Wherein, the width of the thin-plate sub-assembly is the same as the width of the cruise ship, and the distance between the two conventional lifting spreader tools and the balance lifting spreader tool is 4 m to 12 m.

[0043] In some embodiments, please refer to Figures 1 to 3 , the two conventional lifting spreader tools are arranged at intervals along the ship length direction, and each lifting lug in each conventional lifting spreader is arranged corresponding to the position of the strong frame of the thin-plate sub-assembly.

[0044] Further, please refer to Figures 1 to 3 , the length of the covering area of each conventional lifting spreader tool is 6 m to 8 m, the width of the covering area of each conventional lifting spreader tool is 10 m to 16 m, and the interval between the covering areas of the two conventional lifting spreader tools is 6 m to 12 m.

[0045] Even further, please refer to Figures 1 to 3 , the length of the covering area of the balance lifting spreader tool is 20 m to 25 m, and the width of the covering area of the balance lifting spreader tool is 10 m to 16 m.

[0046] The following is a further introduction and description of the present invention. Please refer to Figures 1 to 5 :

[0047] a) Sub-assembly division method and dimensional characteristics

[0048] For the width dimension of the large cruise ship sub-assembly, according to the ship width of the large cruise ship being about 40 m, the structural dimensions within the full width range are usually selected, that is, the width of the sub-assembly is about 40 m, which is convenient for integral construction within the width range.

[0049] For the height dimension of the large cruise ship block, based on the similarity of the deck area functions and the lifting capacity of the crane, it is usually selected as the structural dimension of adjacent multi-layer decks, that is, the block height is approximately 10 meters to 15 meters.

[0050] The length division of the large cruise ship ring section is generally carried out according to the building capacity of the thin plate section production line, that is, the section length (ring section length) should be less than the maximum width of a single station of the production line, which is 16 meters. Usually, the ring section length is approximately 12 meters to 15 meters according to the deck beam spacing.

[0051] When using a single gantry crane for hoisting the thin plate block of the cruise ship, when determining whether the block length is the length of a single ring section, the parameters of the gantry crane used for dock assembly hoisting and the block assembly efficiency are taken as the main consideration basis. Usually, the gantry cranes used for dock assembly hoisting in major shipyards are cranes with a tonnage between 600 tons and 800 tons, and the distance between the two hooks between the upper trolleys is 14 meters to 17 meters. If the length of a single ring section is selected as the block length dimension, according to the deck beam spacing of the cruise ship block, which is approximately 3 meters, there are usually 4 or 5 decks of beams within a single ring section length. Considering that the two hooks between the upper trolleys should be symmetric about the center of gravity of the ring section, and the lugs of the hooks should be selected on the deck beam structure that deviates from the first and last end faces by one deck beam, the distance between the two hooks between the upper trolleys on the deck structure is less than 9 meters, which does not match the gantry crane parameters. Therefore, when using 3 hooks (two hooks on the upper trolley and one hook on the lower trolley) for the dock hoisting and assembly of the thin plate block, usually the length of two ring sections is selected as the block length dimension, which is convenient for matching the gantry crane parameters, is conducive to advancing a large number of longitudinal bone docking works between the two ring sections, and is conducive to advancing the outfitting work between the ring sections. Therefore, the length dimension of the large cruise ship block is generally 25 meters to 30 meters.

[0052] Thus, it can be seen that the dimensions of the large cruise ship block are a length of 25 meters to 30 meters, a width of approximately 40 meters, a height of approximately 10 meters to 15 meters, and its weight is approximately 300 tons to 700 tons.

[0053] b) Requirements for the hoisting process of the thin plate block

[0054] The thin plate block of the cruise ship has a large size and poor overall rigidity, so the control of hoisting deformation is crucial. Before the block assembly, the deck surface has been leveled, and the internal pre-outfitting has been basically completed. If deformation occurs after hoisting, the work in the relevant area needs to be redone, resulting in losses of materials and cycles.

[0055] When using a single gantry crane for hoisting the thin-plate section of a cruise ship, the most crucial issue is to select an appropriate hoisting method, that is, to reasonably arrange the three hooks of the gantry crane and select a suitable large lifting spreader to form a uniform arrangement of lifting points, so as to achieve uniform coverage of the lugs below the lifting points over the length and width ranges of the section. Therefore, it is necessary to plan an appropriate hoisting method based on the parameters of the gantry crane (hook spacing, lifting height, maximum lifting capacity, etc.) and the parameters of the section (dimensions, weight, positions where lugs can be arranged, etc.).

[0056] 1. Hoisting Method for the Thin-Plate Section of a Large Cruise Ship

[0057] When using a single gantry crane for hoisting the thin-plate section of a cruise ship, the following method steps can meet the hoisting process requirements of the section:

[0058] a) Hoisting with Three Hooks Simultaneously

[0059] Use a single gantry crane to hoist with three hooks simultaneously, ensuring that the hoisting attitude of the section can be adjusted in both the ship length direction and the ship width direction during the hoisting of the section, meeting the hoisting process requirements of rapid and accurate positioning of the large-size thin-plate section. At the same time, the two hooks on the upper trolley are arranged front and back along the ship length direction, which can meet the requirement that the lugs connected by the hooks on the upper trolley cover as much of the ship length range of the section as possible, realizing the uniform arrangement of lugs.

[0060] b) The Hooks on the Upper Trolley and the Hooks on the Lower Trolley are Arranged Symmetrically with Respect to the Center Line of the Hull

[0061] Since the strong structures of the thin-plate section of a cruise ship are symmetric with respect to the center line of the hull, choosing to arrange the hooks on the upper trolley and the hooks on the lower trolley symmetrically with respect to the center line of the hull can avoid a large load on a single hook caused by asymmetric arrangement, thus preventing the inability to lift due to overweight of a single hook. It can also avoid the instability of the hoisting attitude caused by uneven hoisting forces on both sides of the center line, or large local structural hoisting stresses. At the same time, when the symmetric arrangement is selected, a certain transverse bending stress is formed between the hooks on the upper trolley and the hooks on the lower trolley, that is, in the center line area, and the relatively dense structures on both sides of the center line have relatively strong stiffness, which can resist the transverse bending deformation caused by the transverse bending stress.

[0062] c) Select a Large Balanced Lifting Spreader for the Hooks on the Lower Trolley

[0063] Based on the fact that the hooks on the lower trolley are arranged on one side of the center line of the hull, when conventional lifting spreaders (about 6 meters to 8 meters in length) are selected for the hooks, the size of the wire ropes below them after connecting the lugs generally opens to 8 meters to 12 meters in length and 6 meters to 8 meters in width. Therefore, it is very difficult to cover the length and one-side width ranges of the section (25 meters to 30 meters in length and 18 meters to 20 meters in half-width). So, using conventional lifting spreaders for the hooks on the lower trolley cannot meet the hoisting process requirements, and large lifting spreaders must be selected to ensure that the lugs connected by the lifting spreaders cover 50% to 70% of the length and one-side width ranges of the section.

[0064] The selection of the balanced hanging row should meet the following requirements:

[0065] The weight of the balanced hanging row should be controlled to avoid that the lifting capacity after deducting the self-weight of the hanging row from the lifting capacity of the lower trolley is insufficient to meet the lifting of the heavier large-size thin plate sub-assembly;

[0066] The height of the balanced hanging row should not be too high to avoid that the topmost deck sub-assembly of the cruise ship cannot be lifted due to insufficient lifting height of the hook, or that the included angle between the connecting wire rope under the hanging row and the deck is too large due to the too short connecting wire rope under the hanging row, resulting in excessive local thin plate structure lifting stress at the lifting lug.

[0067] The length of the balanced hanging row is selected to be 14 meters to 18 meters. If it is too short, the connecting lifting lugs of the hanging row cannot cover the length range of the sub-assembly as much as possible. If it is too long, the self-weight of the hanging row is large, resulting in insufficient lifting capacity after deducting the self-weight of the hanging row from the lifting capacity of the lower trolley;

[0068] Two rows of pulleys are arranged under the hanging row along the length direction of the hanging row. The two rows of pulleys can be independently opened at the maximum angle in the width direction of the hanging row to enable the connecting lifting lugs of the hanging row to cover the unilateral width range (i.e., half-width range) of the sub-assembly as much as possible;

[0069] The number of the two rows of pulleys is as many as possible to cover any deck strong beam position within the length range of the sub-assembly;

[0070] A balanced hanging row should be selected to avoid the problem of relatively large local stress on the lifting lug caused by the relative eccentricity between the actual center of gravity of the sub-assembly and the center of the hanging row, and at the same time avoid the sub-assembly attitude inclination caused by the inclined attitude of the hanging row;

[0071] Considering that the large cruise ship has many deck layers, to ensure the smooth lifting of the topmost deck sub-assembly, after ensuring that a wire rope with a length of 15 meters to 20 meters is connected under the hanging row, it should still meet the requirement that the connecting lifting lugs of the hanging row cover 50% to 70% of the length and unilateral width range of the sub-assembly.

[0072] d) The upper trolley hook selects a conventional hanging row

[0073] Select conventional hanging rows for the two lifting lugs of the upper trolley. To ensure the smooth lifting of the topmost deck sub-assembly, after ensuring that a wire rope with a length of 15 meters to 20 meters is connected under the hanging row, it should still meet the requirement that the connecting lifting lugs of the hanging row cover 50% to 70% of the length and unilateral width range of the sub-assembly, that is, the wire rope under the hanging row is opened in both the length and unilateral width directions of the sub-assembly.

[0074] e) The distance between the hooks and lifting lugs is uniform

[0075] To meet the requirement that the connecting lifting lugs of the hanging row cover 50% to 70% of the length and unilateral width range of the sub-assembly, the distance between the hooks and lifting lugs should meet the following requirements:

[0076] The coverage range L1 of the upper trolley hook in the ship length direction: 6 m to 8 m;

[0077] The coverage range L2 of the lower trolley hook in the ship length direction: 20 m to 25 m;

[0078] The spacing L between the upper trolley hooks in the ship length direction: 6 m to 12 m;

[0079] The coverage range B1 of the upper trolley hook in the ship width direction: 10 m to 16 m;

[0080] The coverage range B2 of the lower trolley hook in the ship width direction: 10 m to 16 m;

[0081] The spacing B between the upper and lower trolley hooks in the ship width direction: 4 m to 12 m.

[0082] f) The lifting lugs are arranged on the strong frames

[0083] Combined with the hooks, the lifting lugs are evenly arranged according to the spacing. In the ship length direction, the lifting lugs are arranged on the deck strong beams with uniform intervals, and in the ship width direction, they are symmetrically arranged on the strong frames such as columns, longitudinal beams, and outer plates on both sides of the center line. At the same time, due to the installation of outfittings such as doors, windows, and balconies on the side shell outer plate and the relatively high aesthetic requirements for the outer plate, the selection of the lifting lug position has an impact on the overall hoisting rigidity of the subassembly and the deck level, on the storey height of the lifting point area, and on the upward warping or downward sagging of the side shell outer plate.

[0084] The present invention has at least the following advantages:

[0085] The present invention uses three hooks of a single gantry crane to hoist simultaneously. For the two hooks of the upper trolley, conventional lifting slings are used, and for the hook of the lower trolley, a large balanced lifting sling is used. The steel wires below each lifting sling are fully spread in the ship length direction and the ship width direction. This hoisting method, as a prerequisite for reasonably arranging the lifting lugs on the subassembly deck surface, realizes that the lifting lugs below the lifting slings evenly cover the length and width ranges of the subassembly, can cover 50% - 70% of the subassembly deck surface range, and solves the problem of poor rigidity of the subassembly caused by the relatively concentrated lifting lugs below the lifting points;

[0086] The lower trolley hook uses a large-sized balanced lifting beam. Its length is relatively large, and a double-row pulley along the ship length direction is arranged under the lifting beam. When configuring a relatively short wire rope, it can still ensure that the wire rope under the pulley can fully open in the ship length direction and ship width direction, so that the lifting lugs connected by the wire rope under a single lifting point of the lower trolley hook can be evenly arranged within the half-width range of the subassembly. At the same time, according to the self-weight and height of the lifting beam, it can lift the largest and heaviest thin plate subassembly of a large cruise ship and can also lift the topmost subassembly of the cruise ship. The lifting beam has many pulleys and can connect more wire ropes and lifting lugs, solving the problem of relatively large local stress in the thin plate structure caused by a relatively large load on a single lifting lug. The length of the lifting beam is relatively long, avoiding the problem of lateral stress concentration on the lifting lug and the thin plate structure caused by a large angle of the wire rope along the ship length direction; the balanced lifting beam can avoid the problem of relatively large force on a local lifting lug caused by the eccentricity of the actual center of gravity of the subassembly; this hoisting method of a single gantry crane and the balanced lifting beam can ensure the hoisting of various large-sized thin plate subassemblies.

[0087] The above are only the preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the technical content disclosed above within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A hoisting method for hoisting a large-sized thin plate assembly of a cruise ship, characterized in that, Including: Generating thin plate sub - assemblies according to the lifting capacity of a single gantry crane and the main dimensions of the cruise ship; Dividing the thin plate sub - assemblies into two ring sections along the ship length direction according to the building capacity of the thin plate section assembly line; Levelling the deck surface and pre - outfitting the two ring sections respectively to form a first ring section and a second ring section; Butting the first ring section and the second ring section together to form the thin plate sub - assembly; Arranging two conventional lifting spreader tools and a balanced lifting spreader tool for the large - size thin plate sub - assembly of the cruise ship on both sides of the hull center line of the thin plate sub - assembly; wherein, the balanced lifting spreader tool for the large - size thin plate sub - assembly of the cruise ship includes: a body with a long side and a short side, and a lower trolley hook is arranged at the center position of the top end of the body; multiple pairs of fixed pulley groups are arranged at intervals along the long side at the lower end of the body, and each fixed pulley group includes at least two fixed pulleys arranged at intervals along the short side; multiple lifting components, including multiple lifting lugs and multiple steel wire ropes, the multiple lifting lugs can be fixed on the thin plate sub - assembly to enclose a lifting point area, one steel wire rope is wound around each fixed pulley, and each lifting lug can be connected to the free end of the steel wire rope to cooperate in lifting the thin plate sub - assembly together; the length of the body is 14 meters to 18 meters; Using the single gantry crane to lift the upper trolley hook in the conventional lifting spreader tool and the lower trolley hook in the balanced lifting spreader tool simultaneously to complete the lifting of the thin plate sub - assembly; Wherein, the width of the thin plate sub - assembly is the same as the width of the cruise ship, and the distance between the two conventional lifting spreader tools and the balanced lifting spreader tool is 4 meters to 12 meters.

2. The hoisting method according to claim 1, wherein The two conventional lifting spreader tools are arranged at intervals along the ship length direction, and each lifting lug in each conventional lifting spreader is arranged corresponding to the strong frame position of the thin plate sub - assembly.

3. The hoisting method according to claim 2, characterized in that, The length of the coverage area of each conventional lifting spreader tool is 6 meters to 8 meters, the width of the coverage area of each conventional lifting spreader tool is 10 meters to 16 meters, and the interval between the coverage areas of the two conventional lifting spreader tools is 6 meters to 12 meters.

4. The hoisting method according to claim 3, characterized in that, The length of the coverage area of the balanced lifting spreader tool is 20 meters to 25 meters, and the width of the coverage area of the balanced lifting spreader tool is 10 meters to 16 meters.

5. An equilibrium lifting and arranging tooling for large-sized thin plates of a cruise ship section, characterized in that, For completing the lifting method according to any one of claims 1 to 4, the length of the steel wire rope is 15 meters to 20 meters.

6. The balance lifting and arranging tooling for large-sized thin plates of cruise ship general sections according to claim 5, characterized in that, The length of the lifting point area is 50% to 70% of the length of the thin plate sub - assembly.

7. The balance lifting and arranging tooling for large-sized thin plate sub-assemblies of a cruise ship according to claim 6, characterized in that, The width of the lifting point area is 50% to 70% of half of the width of the thin plate sub - assembly.

8. The balance lifting and arranging tooling for use with large-sized thin plate sub-assemblies of a cruise ship according to claim 7, characterized in that, Each lifting lug is arranged corresponding to the strong frame position of the thin plate sub - assembly.

9. The balance lifting and arranging tooling for large-sized thin plates of cruise ship total sections according to claim 7, characterized in that, The number of fixed pulleys in each fixed pulley group is two.

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