Hoisting Method for Large-Size Thin Plate Sub-Assembly of Cruise Ship

Abstract

This application relates to the technical field of cruise ship construction, and particularly to a hoisting method for large-sized thin plate sections of a cruise ship. The hoisting method for large-sized thin plate sections of a cruise ship includes the following steps: First, divide the thin plate sections according to the parameters of the gantry crane and the section mating efficiency, and determine the dimensions of the thin plate sections; Next, arrange the three hooks of the gantry crane at predetermined positions above the thin plate sections, and configure a balance lifting beam on the lower trolley hook; Arrange lifting lugs on the hull of the thin plate section, so that the two upper trolley hooks connecting the corresponding lifting lugs can jointly define a first lifting coverage range on the hull, and the balance lifting beam connecting the corresponding lifting lugs can define a second lifting coverage range on the hull, and the first lifting coverage range and the second lifting coverage range are symmetrical about the center line of the hull, enabling the large-sized thin plate section to be quickly and accurately positioned and hoisted.

Description

Technical Field

[0001] This application relates to the technical field of cruise ship construction, and particularly relates to a hoisting method for large-size thin-plate sub-assemblies of a cruise ship. Background Art

[0002] During the processing and manufacturing of a cruise ship, it is necessary to hoist the thin-plate sub-assemblies of the cruise ship; for large-size thin-plate sub-assemblies, before the sub-assembly is installed, the deck surface has been leveled and the internal pre-fitting has been basically completed. If deformation occurs after hoisting, rework is required, resulting in losses in materials and production cycle; due to the large size and poor overall perception of the sub-assembly, it is crucial to control the hoisting deformation of the sub-assembly, but the existing hoisting processes for thin-plate sub-assemblies are not applicable to the hoisting of large-size thin-plate sub-assemblies. Summary of the Invention

[0003] The purpose of the present invention is to provide a hoisting method for large-size thin-plate sub-assemblies of a cruise ship, so as to successfully complete the hoisting of large-size thin-plate sub-assemblies.

[0004] The present invention provides a hoisting method for large-size thin-plate sub-assemblies of a cruise ship, including the following steps:

[0005] Divide the thin-plate sub-assembly according to the parameters of the gantry crane and the sub-assembly installation efficiency, and determine the size of the thin-plate sub-assembly;

[0006] Arrange the three hooks of the gantry crane at predetermined positions above the thin-plate sub-assembly, and configure a balance lifting beam on the lower trolley hook;

[0007] Arrange lifting lugs on the hull of the thin-plate sub-assembly, so that the two upper trolley hooks connecting the corresponding lifting lugs can jointly define a first lifting coverage range on the hull, and the balance lifting beam connecting the corresponding lifting lugs can define a second lifting coverage range on the hull, and the first lifting coverage range and the second lifting coverage range are symmetric about the center line of the hull.

[0008] Further, the rated load of the gantry crane is 600t - 800t, and the distance between the two upper trolley hooks is 14m - 17m.

[0009] Further, the thin-plate sub-assembly includes two ring sections along the length direction of the hull, the size of the thin-plate sub-assembly along the length direction of the hull is 25m - 30m, and the weight of the thin-plate sub-assembly is 300t - 700t;

[0010] The width of the thin-plate sub-assembly is the width of the cruise ship hull, and the height of the thin-plate sub-assembly is 10m - 15m.

[0011] Further, the first lifting coverage range jointly defined by the two upper trolley hooks covers 50% - 70% of the thin-plate sub-assembly in the half-width area of the hull;

[0012] The second lifting coverage area defined by the lower trolley hook covers 50%-70% of the total thin plate section within the ship's half-width area.

[0013] Furthermore, the lower trolley hook and the two upper trolley hooks are symmetrically arranged with respect to the ship's center line of the total thin plate section.

[0014] The two upper trolley hooks are respectively located above the two ring sections, and the two upper trolley hooks are symmetrically arranged with the center of gravity of the total thin plate section as the center.

[0015] Furthermore, the two upper trolley hooks respectively define a rectangular third lifting coverage area on the ship's hull, and the two third lifting coverage areas are located within the first lifting coverage area.

[0016] The dimension L1 of the two third lifting coverage areas along the ship's length direction is 6m-8m, and the distance L between the two third lifting coverage areas along the ship's length direction is 6-12m.

[0017] Furthermore, the length of the balance lifting row along the ship's length direction is 14m-18m, and the dimension L2 of the second lifting coverage area along the ship's length direction is 20m-25m.

[0018] Furthermore, the dimension B1 of the first lifting coverage area along the ship's width direction is 10m-16m.

[0019] The dimension B2 of the second lifting coverage area along the ship's width direction is 10m-16m.

[0020] The distance B between the first lifting coverage area and the second lifting coverage area along the ship's width direction is 4m-12m.

[0021] Furthermore, the lifting lugs are arranged at the strong frames of the ship's hull of the total thin plate section.

[0022] Furthermore, steel wires are connected below the three hooks of the gantry crane, and the length of the steel wires is 15m-20m.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] The hoisting method for large-sized thin-plate sub-assemblies of a cruise ship provided by the present invention includes the following steps: First, divide the thin-plate sub-assemblies according to the parameters of the gantry crane and the sub-assembly loading efficiency, and determine the dimensions of the thin-plate sub-assemblies; Next, arrange the three hooks of the gantry crane at predetermined positions above the thin-plate sub-assembly, and configure a balanced lifting beam on the lower trolley hook; Arrange lifting lugs on the hull of the thin-plate sub-assembly, so that the two upper trolley hooks connecting the corresponding lifting lugs can jointly define a first lifting coverage area on the hull, and the balanced lifting beam connecting the corresponding lifting lugs can define a second lifting coverage area on the hull, and the first lifting coverage area and the second lifting coverage area are symmetric about the center line of the hull. Since the strong structures of the thin-plate sub-assemblies of the cruise ship are symmetric about the center line of the hull, by making the lifting coverage areas formed by the gantry crane on both sides of the thin-plate sub-assembly be symmetrically arranged about the center line of the hull of the thin-plate sub-assembly, it is possible to avoid the inability to lift caused by excessive load on a single hook due to asymmetric arrangement, and it is also possible to avoid the unstable lifting attitude caused by uneven forces on the thin-plate sub-assemblies on both sides of the hull center line; At the same time, by selecting a symmetric arrangement, a certain transverse bending stress can be formed in the center line area, and the relatively dense structures on both sides of the center line have relatively strong stiffness and can resist the transverse bending deformation caused by the transverse bending stress.

[0025] Therefore, through the hoisting method for large-sized thin-plate sub-assemblies of a cruise ship of the present application, the three hooks of a single gantry crane are used to hoist the thin-plate sub-assembly simultaneously, a balanced lifting beam is configured on the lower trolley hook, and two symmetric lifting coverage areas are formed to achieve fast and accurate positioning hoisting of the large-sized thin-plate sub-assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. Obviously, the following drawings are 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.

[0027] Figure 1 It is a hoisting schematic diagram of a large-sized thin-plate sub-assembly of a cruise ship provided by an embodiment of the present invention;

[0028] Figure 2 It is a hoisting schematic diagram of a large-sized thin-plate sub-assembly of a cruise ship from the first perspective of the lower trolley hook provided by an embodiment of the present invention;

[0029] Figure 3 It is a hoisting schematic diagram of a large-sized thin-plate sub-assembly of a cruise ship from the second perspective of the lower trolley hook provided by an embodiment of the present invention.

[0030] Reference Signs:

[0031] 1 - Thin plate sub - assembly, 11 - Ring segment, 2 - Upper trolley hook, 3 - Lower trolley hook, 31 - Balanced lifting row. Detailed implementation manners

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0033] Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0034] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0037] Next, refer to Figures 1 to 3 Describe the hoisting method of the large - size thin - plate sub - assembly of a cruise ship according to some embodiments of the present application.

[0038] The present application provides a hoisting method for a large - size thin - plate sub - assembly of a cruise ship, including the following steps:

[0039] The first step: Divide the thin - plate sub - assembly 1 according to the parameters of the gantry crane and the sub - assembly loading efficiency, and determine the size of the thin - plate sub - assembly 1.

[0040] Such as Figure 1The thin plate section 1 shown in the figure has a dimension along the width direction of the cruise ship hull, i.e., a width dimension of the thin plate section 1: the hull width of a large cruise ship is generally around 40m. In order to facilitate the integrity construction of the hull within the width range, the width of the hull is selected as the width of the thin plate section 1.

[0041] For the dimension of the thin plate section 1 in the opposite direction of the height of the cruise ship hull, that is, the height dimension of the thin plate section 1: according to the regional functional similarity of the cruise ship's decks and the lifting capacity of the gantry crane, the structural dimensions of the adjacent multi-layer decks are selected as the height dimension of the thin plate section 1, that is, the height of the thin plate section 1 is approximately 10m-15m.

[0042] Regarding the dimension of the thin plate section 1 along the length direction of the cruise ship hull, that is, the length dimension of the thin plate section 1: according to the parameters of the gantry crane carried on the dock and considering the section carrying efficiency, the lengths of the two ring segments 11 are selected as the length dimension of the thin plate section 1, so as to match the parameters of the gantry crane carried on the dock.

[0043] Specifically, the rated load of the gantry crane carried by the dock is between 600 tons and 800 tons. The gantry crane has three hooks, namely two upper trolley hooks 2 arranged on the upper trolley, and a known lower trolley hook 3 arranged on the lower trolley, wherein the distance between the two upper trolley hooks 2 is 14m-17m.

[0044] According to the construction capacity of the thin plate segment assembly line, the length of the thin plate segment (i.e., the length of the ring segment 11) is generally 12m-15m. When considering the length of a ring segment 11 as the length of the thin plate total segment 1, since the two upper trolley hooks 2 should be symmetrical to the center of gravity of the ring segment 11, and the lifting ears on the ring segment 11 should be set on the deck beam structure that deviates from the front and rear end faces of the ring segment 11 by a deck beam spacing, this will cause the distance between the two upper trolley hooks 2 to be less than 9m, which is inconsistent with the parameters of the gantry crane. Therefore, the length of the two ring segments 11 is selected as the length of the thin plate total segment 1, so that the length of the thin plate total segment 1 is between 25m-30m, and the weight is between 300 tons and 700 tons, which matches the parameters of the gantry crane carried on the dock.

[0045] Compared with hoisting a single ring segment 11 separately, hoisting two ring segments 11 at the same time can improve the loading efficiency of the entire section. At the same time, a large number of longitudinal bones that need to be connected between the two ring segments 11 can be connected in advance, which is conducive to the advancement of outfitting work between the ring segments 11.

[0046] Step 2: Arrange the three hooks of the gantry crane, namely two upper trolley hooks 2 and one lower trolley hook 3, at the predetermined positions above the thin plate sub-assembly 1, and arrange lifting lugs on the hull of the thin plate sub-assembly 1 for connecting with the three hooks. Ordinary lifting trays are arranged below the two upper trolley hooks 2 and are connected to the corresponding lifting lugs through steel wire ropes, so that the two upper trolley hooks 2 jointly define a first lifting coverage area on the hull of the thin plate sub-assembly 1. A balance lifting row 31 with a relatively large length is arranged on the lower trolley hook 3 and is connected to the corresponding lifting lug through the balance lifting row 31, so that the lower trolley hook 3 defines a second lifting coverage area on the hull of the thin plate sub-assembly 1, and the first lifting coverage area and the second lifting coverage area are symmetrical about the center line of the hull.

[0047] Specifically, as Figure 1 shown, lifting lugs are arranged on the hull. Among them, multiple lifting lugs for connecting with the two upper trolley hooks 2 define a first lifting coverage area on the hull of the thin plate sub-assembly 1, and multiple lifting lugs for connecting with the lower trolley hook 3 define a second lifting coverage area on the hull of the thin plate sub-assembly 1.

[0048] The first lifting coverage area and the second lifting coverage area are symmetrical about the center line of the hull, that is, the first lifting coverage area and the second lifting coverage area are respectively located in the half-width areas on both sides of the center line of the hull of the thin plate sub-assembly 1. Make the first lifting coverage area and the second lifting coverage area cover as much of the hull in their respective half-width areas as possible. For example, make the first lifting coverage area and the second lifting coverage area both reach 50%-70% in their respective half-width areas, and arrange lifting lugs within their respective coverage areas.

[0049] Correspondingly, make the two upper trolley hooks 2 located above the first lifting coverage area, the lower trolley hook 3 located above the second lifting area, and make the two upper trolley hooks 2 on one side and the lower trolley hook 3 on the other side be symmetrically arranged about the center line of the hull.

[0050] The two upper trolley hooks 2 are arranged at intervals along the length direction of the hull and are respectively located above the two ring segments 11, and the two upper trolley hooks 2 are symmetrically arranged with the center of gravity of the thin plate sub-assembly 1 as the center. The lifting lugs connected to the two upper trolley hooks 2 respectively define a third lifting coverage area located within the first lifting coverage area. Preferably, the dimension L1 of the two third lifting coverage areas along the length direction of the hull is 6m - 8m, the distance L between the two third lifting coverage areas along the length direction of the hull is 6 - 12m, and the dimension of the third lifting coverage area along the width direction of the hull is also the dimension B1 of the first lifting coverage area along the width direction of the hull, which is 10m - 16m.

[0051] The lower trolley hook 3 is located on the other side of the hull centerline and is symmetrically distributed with the two upper trolley hooks 2 with respect to the hull centerline; the length direction of the balance lifting row 31 on the lower trolley hook 3 is along the length direction of the hull, so that the two upper trolley hooks 2 and one lower trolley hook 3 are arranged in a triangular formation.

[0052] The length of the balance lifting row 31 on the lower trolley is 14m - 18m, so that the length of the balance lifting row 31 is long enough to be connected to the lifting lugs to form a sufficient lifting coverage range, and the balance lifting row 31 is not too large to affect the lifting capacity of the lower trolley. On both sides in the width direction of the balance lifting row 31, a row of pulleys are respectively arranged to connect the steel wire ropes, and the two rows of pulleys can independently open at the maximum possible angle in the width direction of the balance lifting row 31, so that the lifting lugs connected thereto can cover the maximum possible lifting coverage range.

[0053] Preferably, as Figures 1 to 3 shown, the dimension L2 of the second lifting coverage range along the length direction of the hull is 20m - 25m, the dimension B2 of the second lifting coverage range along the width direction of the hull is 10m - 16m, and the spacing B between the first lifting coverage range and the second lifting coverage range along the width direction of the hull is 4m - 12m.

[0054] Preferably, the lifting lugs are arranged at the strong frames of the hull of the thin plate sub - section 1.

[0055] Preferably, the length of the steel wire ropes used by the upper trolley hook 2 and the lower trolley hook 3 to connect the lifting lugs is 15m - 20m, so as to be able to lift the top - most sub - section of the cruise ship.

[0056] Since the strong structures of the thin plate sub - section 1 of the cruise ship are all symmetric with respect to the hull centerline, by arranging the gantry crane symmetrically with respect to the hull centerline of the thin plate sub - section 1, it is possible to avoid the situation where a single hook bears too much weight due to asymmetric arrangement and thus unable to lift, and also avoid the unstable lifting attitude caused by uneven forces on the thin plate sub - sections 1 on both sides of the hull centerline; at the same time, by choosing a symmetric arrangement, a certain transverse bending stress can be formed between the upper trolley hook 2 and the lower trolley hook 3, that is, in the centerline area, and the relatively dense structures on both sides of the centerline have relatively strong stiffness and can resist the transverse bending deformation caused by the transverse bending stress.

[0057] Therefore, through the lifting method of the large - size thin plate sub - section 1 of the cruise ship in this application, three hooks of a single gantry crane are used to lift the thin plate sub - section 1 simultaneously, and a balance lifting row 31 is configured on the lower trolley hook 3, so that the thin plate sub - section 1 can adjust the lifting attitude in both the length direction and the width direction of the ship, thereby meeting the requirements of rapid and accurate positioning and lifting of the large - size thin plate sub - section 1.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hoisting method for a large-sized thin plate sub-assembly of a cruise ship, characterized in that The steps include: Dividing the thin plate sub - section according to the parameters of the gantry crane and the overall section hoisting efficiency, and determining the size of the thin plate sub - section; the thin plate sub - section includes two ring sections along the ship's length direction; Arranging three hooks of the gantry crane at predetermined positions above the thin plate sub - section, and configuring a balance lifting row on the lower trolley hook; Arranging lifting lugs on the hull of the thin plate sub - section, so that the two upper trolley hooks connecting the corresponding lifting lugs can jointly define a first lifting coverage range on the hull, and the balance lifting row connecting the corresponding lifting lugs can define a second lifting coverage range on the hull, and the first lifting coverage range and the second lifting coverage range are symmetric about the center line of the hull; The first lifting coverage range jointly defined by the two upper trolley hooks covers 50% - 70% of the thin plate sub - section in the ship's half - width area; The second lifting coverage range defined by the lower trolley hook covers 50% - 70% of the thin plate sub - section in the ship's half - width area; The lower trolley hook and the two upper trolley hooks are symmetrically arranged relative to the center line of the hull of the thin plate sub - section; The two upper trolley hooks are respectively located above the two ring sections, and the two upper trolley hooks are symmetrically arranged with the center of gravity of the thin plate sub - section as the center.

2. The hoisting method for the large-sized thin plate sub-assembly of a cruise ship according to claim 1, characterized in that The rated load of the gantry crane is 600t - 800t, and the distance between the two upper trolley hooks is 14m - 17m.

3. The hoisting method of the large-sized thin plate sub-assembly of the cruise ship according to claim 1, characterized in that, The size of the thin plate sub - section along the ship's length direction is 25m - 30m, and the weight of the thin plate sub - section is 300t - 700t; The width of the thin plate sub - section is the width of the cruise ship hull, and the height of the thin plate sub - section is 10m - 15m.

4. The hoisting method for the large-sized thin plate sub-assembly of a cruise ship according to claim 1, characterized in that, The two upper trolley hooks respectively define a rectangular third lifting coverage range on the hull, and the two third lifting coverage ranges are located within the first lifting coverage range; The size L1 of the two third lifting coverage ranges along the ship's length direction is 6m - 8m, and the distance L between the two third lifting coverage ranges along the ship's length direction is 6 - 12m.

5. The hoisting method for the large-sized thin plate sub-assembly of a cruise ship according to claim 1, characterized in that, The length of the balance lifting row along the ship's length direction is 14m - 18m, and the size L2 of the second lifting coverage range along the ship's length direction is 20m - 25m.

6. The hoisting method for the large-sized thin plate subassembly of a cruise ship according to claim 1, characterized in that, The size B1 of the first lifting coverage range along the ship's width direction is 10m - 16m; The size B2 of the second lifting coverage range along the ship's width direction is 10m - 16m; The distance B between the first lifting coverage range and the second lifting coverage range along the ship's width direction is 4m - 12m.

7. The hoisting method for the large-sized thin plate subassembly of a cruise ship according to claim 1, characterized in that, The lifting lugs are arranged at the strong frames of the hull of the thin plate sub - section.

8. The hoisting method of the large-sized thin plate sub-assembly of a cruise ship according to claim 1, characterized in that Steel wires are connected below the three hooks of the gantry crane, and the length of the steel wires is 15m - 20m.

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