Method for installing a lifting deck in a car ro-ro ship block

Abstract

The application discloses a kind of installation methods of lifting deck in automobile roll-on / roll-off ship unit section, it belongs to shipbuilding technical field, the installation method of lifting deck in automobile roll-on / roll-off ship unit section includes the following steps: several bottom layer lifting deck blocks are assembled to form bottom layer lifting deck, several second layer lifting deck blocks are assembled to form second layer lifting deck;Bottom fixed deck total group is constructed in the both ends of bottom fixed deck total group, and the section total group of side plate is constructed;First temporary support and fixed support are constructed on bottom fixed deck total group;The overall hoisting of bottom layer lifting deck is carried out;Second temporary support is set on bottom layer lifting deck;The overall hoisting of second layer lifting deck is carried out;Third temporary support is set on the second layer lifting deck;The overall hoisting of top fixed deck is carried out.The application is hoisted in situ, and bottom layer lifting deck and second layer lifting deck are hoisted integrally, which greatly improves hoisting efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and in particular to a method for installing a lifting deck in a section of a roll-on / roll-off automobile transport ship. Background Art

[0002] Car ro-ro carriers are collectively referred to as PCTC (Pure Car and Truck Carrier), including PCC car ro-ro ships and PCTC car / truck ro-ro ships.

[0003] PCTCs are tall, typically with 10-14 decks, and have a higher center of gravity than other ship types. To provide greater loading flexibility, PCTCs often have three or so height-adjustable decks, also known as movable decks or elevating decks.

[0004] Conventional installation of a PCTC's movable deck typically involves a site-based, loose-fitting installation method. This involves hoisting the small deck pieces that make up the movable deck into the dock one by one until all the small deck pieces are installed. However, this method results in low installation efficiency.

[0005] Therefore, there is an urgent need for a method for installing a lifting deck in the main section of a car roll-on / roll-off transport ship to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide a method for installing a lifting deck in a section of a car roll-on / roll-off transport ship, so as to solve the technical problem in the prior art of low installation efficiency of the lifting deck caused by the on-site loose hanging installation method in the dock.

[0007] As conceived above, the technical solution adopted by the present invention is:

[0008] A method for installing a lifting deck in a section of a car roll-on / roll-off carrier, wherein the lifting deck comprises a bottom lifting deck and a second lifting deck, wherein the bottom lifting deck comprises a plurality of bottom lifting deck blocks, and the second lifting deck comprises a plurality of second lifting deck blocks;

[0009] The method for installing the lifting deck in the main section of the car roll-on / roll-off transport ship comprises the following steps:

[0010] S1. Assembling a plurality of bottom-layer lifting deck blocks to form the bottom-layer lifting deck, and assembling a plurality of second-layer lifting deck blocks to form the second-layer lifting deck;

[0011] S2. constructing side shell subassemblies at both ends of the bottom fixed deck assembly, wherein the side shell subassembly comprises two side shells, and the two side shells are respectively located at both ends of the bottom fixed deck assembly;

[0012] S3, constructing a first temporary support member and a fixed support member on the bottom fixed deck assembly, wherein the height of the first temporary support member is lower than that of the fixed support member;

[0013] S4. Performing overall hoisting of the bottom lifting deck. After the bottom lifting deck is installed in place, the bottom lifting deck passes through the fixed support member and is supported on the upper end of the first temporary support member.

[0014] S5. Install a second temporary support member on the bottom lifting deck, wherein the highest point of the second temporary support member is lower than the highest point of the fixed support member;

[0015] S6. Performing overall hoisting of the second lifting deck. After the second lifting deck is hoisted into place, the second lifting deck passes through the fixed support member and is supported on the upper end of the second temporary support member.

[0016] S7. Install a third temporary support member on the second lifting deck, wherein the highest point of the third temporary support member is at the same level as the highest point of the fixed support member;

[0017] S8. Perform overall hoisting of the top fixed deck, and support the top fixed deck on the highest point of the third temporary support member and the highest point of the fixed support member.

[0018] As a preferred solution for the installation method of the lifting deck in the main section of a ro-ro car carrier, the following steps are required before step S1:

[0019] S0. Simulate the installation process of the lifting deck in the section of the car roll-on / roll-off transport ship using finite element numerical simulation software to determine the optimal positions of the lifting points of the bottom lifting deck and the second lifting deck.

[0020] As a preferred solution for the method of installing a lifting deck in a section of a ro-ro car transport ship, step S0 includes:

[0021] S01. Using the finite element numerical simulation software, establish an overall model of the lifting deck in the overall section of the car roll-on / roll-off transport ship;

[0022] S02: Analyze the stress performance of the bottom lifting deck and the second lifting deck, and determine the optimal positions of the lifting points of the bottom lifting deck and the second lifting deck.

[0023] As a preferred scheme of the installation method of the lifting deck in the automobile roll-on / roll-off ship unit section, stress points of the bottom lifting deck and the second lifting deck are strengthened according to simulation results of the finite element numerical simulation software.

[0024] As a preferred scheme of the installation method of the lifting deck in the automobile roll-on / roll-off ship unit section, the lower surface of each bottom lifting deck block is provided with three first distance sensors which are not collinear.

[0025] In the step S4, after the bottom lifting deck is hoisted, whether the bottom lifting deck is installed in place is detected; if the distance between each bottom lifting deck block and the bottom fixed deck unit group measured by the three first distance sensors of the bottom lifting deck block is within a preset range, it is determined that the bottom lifting deck is installed in place; otherwise, it is determined that the bottom lifting deck is not installed in place.

[0026] As a preferred scheme of the installation method of the lifting deck in the automobile roll-on / roll-off ship unit section, after it is determined that the bottom lifting deck is not installed in place, the installation of the bottom lifting deck is re-performed until the bottom lifting deck is installed in place.

[0027] As a preferred scheme of the installation method of the lifting deck in the automobile roll-on / roll-off ship unit section, before the installation of the bottom lifting deck is re-performed, whether the first temporary support needs to be installed in place is determined according to the detection result of the first distance sensor on each bottom lifting deck block.

[0028] As a preferred scheme of the installation method of the lifting deck in the automobile roll-on / roll-off ship unit section, in the step S2, the following operation also needs to be performed:

[0029] Whether the levelness of the upper surface of the bottom fixed deck unit group meets the design requirement is detected.

[0030] As a preferred scheme of the installation method of the lifting deck in the automobile roll-on / roll-off ship unit section, the lower surface of each second lifting deck block is provided with three second distance sensors which are not collinear.

[0031] In the step S6, after the second lifting deck is hoisted, whether the second lifting deck is installed in place is detected; if the distance between each second lifting deck block and the bottom lifting deck measured by the three second distance sensors of the second lifting deck block is within a preset range, it is determined that the second lifting deck is installed in place; otherwise, it is determined that the second lifting deck is not installed in place.

[0032] As a preferred solution for the installation method of the lifting deck in the main section of a car roll-on / roll-off transport ship, along the length direction of the side outer plate, both ends of the bottom lifting deck and both ends of the second lifting deck do not protrude relative to the side outer plate.

[0033] Beneficial effects of the present invention:

[0034] The present invention proposes a method for installing a lifting deck within a roll-on / roll-off car carrier section. Several bottom-level lifting deck blocks are pre-assembled to form the bottom lifting deck, and several second-level lifting deck blocks are assembled to form the second-level lifting deck. During on-site installation, the bottom and second-level lifting decks are hoisted together, significantly improving installation efficiency. By first assembling the bottom fixed deck, then the side shell sections, and finally the lifting deck, the roll-on / roll-off car carrier section is formed. This ensures sufficient strength during assembly, meeting precision control requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0036] Figure 1 This is a flow chart of a method for installing a lifting deck in a section of a car roll-on / roll-off transport ship provided in the first embodiment of the present invention;

[0037] Figure 2 This is a structural diagram of a car roll-on / roll-off transport ship provided by the first embodiment of the present invention when the lifting deck in the main section is installed in place;

[0038] Figure 3 yes Figure 2 Schematic diagram of the decomposition structure.

[0039] In the picture:

[0040] 1. Bottom fixed deck assembly; 2. Side shell plating assembly; 21. Side shell plating; 3. First temporary support; 4. Fixed support; 5. Bottom lifting deck; 51. Bottom lifting deck block; 6. Second temporary support; 7. Second lifting deck; 71. Second lifting deck block; 8. Third temporary support; 9. Top fixed deck. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0045] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0046] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0047] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0048] Ro-ro transport ships have changed the way cargo was "lifted up and down" to a system where cargo vehicles can directly "drive up and down" via the gangway connecting the dock and the ship. Ro-ro transport has fundamentally changed the traditional process, greatly simplified the port loading and unloading process, and greatly improved loading and unloading efficiency. Ro-ro ships have therefore come into being.

[0049] Roll-on / roll-off car transport ships provide good safety protection for cars, and the risk of cargo damage and loss is much lower than that of cars transported in containers. Therefore, they have become the main carrier of international automobile trade transportation.

[0050] To improve the efficiency of on-site installation of the lifting deck of a ro-ro carrier, see Figure 1-Figure 3 This embodiment provides a method for installing a lifting deck in a section of a car roll-on / roll-off transport ship.

[0051] Specifically, see Figure 2 and Figure 3 In this embodiment, the lifting deck includes a bottom lifting deck 5 and a second lifting deck 7. The bottom lifting deck 5 includes a plurality of bottom lifting deck blocks 51, and the second lifting deck 7 includes a plurality of second lifting deck blocks 71.

[0052] The installation method of the lifting deck in the main section of the car roll-on / roll-off carrier includes the following steps:

[0053] S1. Assemble several bottom lift deck blocks 51 to form the bottom lift deck 5, and assemble several second lift deck blocks 71 to form the second lift deck 7;

[0054] S2. Constructing the side shell subassembly 2 at both ends of the bottom fixed deck assembly 1. The side shell subassembly 2 includes two side shells 21, which are respectively located at both ends of the bottom fixed deck assembly 1.

[0055] S3, constructing the first temporary support 3 and the fixed support 4 on the bottom fixed deck assembly 1, wherein the height of the first temporary support 3 is lower than that of the fixed support 4;

[0056] S4. Perform the overall hoisting of the bottom lifting deck 5. After the bottom lifting deck 5 is installed in place, the bottom lifting deck 5 passes through the fixed support member 4 and is supported on the upper end of the first temporary support member 3;

[0057] S5. Install a second temporary support member 6 on the bottom lifting deck 5, wherein the highest point of the second temporary support member 6 is lower than the highest point of the fixed support member 4;

[0058] S6. Perform the overall hoisting of the second lifting deck 7. After the second lifting deck 7 is hoisted into place, the second lifting deck 7 passes through the fixed support 4 and is supported on the upper end of the second temporary support 6.

[0059] S7. Install a third temporary support member 8 on the second lifting deck 7. The highest point of the third temporary support member 8 is on the same horizontal plane as the highest point of the fixed support member 4.

[0060] S8. Perform overall hoisting of the top fixed deck 9, and support the top fixed deck 9 on the highest point of the third temporary support 8 and the highest point of the fixed support 4.

[0061] This embodiment provides a method for installing a lifting deck within a roll-on / roll-off car carrier section. First, several bottom-level lifting deck blocks 51 are pre-assembled to form the bottom-level lifting deck 5, and several second-level lifting deck blocks 71 are assembled to form the second-level lifting deck 7. During on-site installation, the bottom-level lifting deck 5 and the second-level lifting deck 7 are hoisted together, significantly improving installation efficiency. By first installing the bottom-level fixed deck assembly 1, then the side shell section assembly 2, and finally the lifting deck, the roll-on / roll-off car carrier section is formed. This ensures sufficient strength during assembly of the roll-on / roll-off car carrier section, meeting precision control requirements.

[0062] The lifting deck assembly during the block construction phase effectively reduces the number of cranes deployed in the dock, improving shipbuilding efficiency. This reduces the need for overhead support in the dock, minimizing safety risks and tooling costs during construction. The lifting deck assembly improves the integrity of the block outfitting and painting, enhancing the overall accuracy of the block and reducing subsequent trimming and leveling work.

[0063] Specifically, before hoisting, several bottom lifting deck blocks 51 are laid flat and the adjacent two edges of any two adjacent bottom lifting deck blocks 51 are welded to form the bottom lifting deck 5; after the welding is completed, the welds are subjected to quality detection.

[0064] Further, after the welding is completed, the overall flatness of the bottom lifting deck 5 is detected to ensure that the overall flatness of the bottom lifting deck 5 is qualified. Optionally, a laser plane interferometer can be used to detect the overall flatness of the bottom lifting deck 5. If the overall flatness of the bottom lifting deck 5 is unqualified, a thermal process can be used to level the bottom lifting deck 5.

[0065] Specifically, in this embodiment, the bottom lifting deck 5 includes six bottom lifting deck blocks 51, and the six bottom lifting deck blocks 51 are arranged in a “3x2” matrix array.

[0066] Specifically, before hoisting, several second-layer lifting deck blocks 71 are laid flat and the adjacent two edges of any two adjacent second-layer lifting deck blocks 71 are welded to form the second-layer lifting deck 7; after the welding is completed, the welds are subjected to quality detection.

[0067] Further, after the welding is completed, the overall flatness of the second-layer lifting deck 7 is detected to ensure that the overall flatness of the second-layer lifting deck 7 is qualified. Optionally, a laser plane interferometer can be used to detect the overall flatness of the second-layer lifting deck 7. If the overall flatness of the second-layer lifting deck 7 is unqualified, a thermal process can be used to level the second-layer lifting deck 7.

[0068] Specifically, in this embodiment, the second-layer lifting deck 7 includes six second-layer lifting deck blocks 71, and the six second-layer lifting deck blocks 71 are arranged in a “3x2” matrix array.

[0069] Further, in order to ensure the installation accuracy and efficiency of the lifting deck, before step S1, the following step needs to be performed in this embodiment:

[0070] S0, simulate the installation process of the lifting deck in the automobile roll-on / roll-off transport ship unit section by using a finite element numerical simulation software, and determine the optimal lifting point position of the bottom lifting deck 5 and the second-layer lifting deck 7.

[0071] Specifically, step S0 includes:

[0072] S01, establishing a whole model of the lifting deck in the automobile roll-on / roll-off transport ship unit section by using a finite element numerical simulation software;

[0073] S02, analyzing the stress performance of the bottom lifting deck 5 and the second-layer lifting deck 7 to determine the optimal lifting point position of the bottom lifting deck 5 and the second-layer lifting deck 7.

[0074] Furthermore, based on the analysis results of finite element numerical simulation software, the stress points of the bottom and second lift decks 5, 7 were reinforced. It is understood that these stress points are the weak points of the bottom and second lift decks 5, 7, and strengthening these weak points ensures the stability of the structures.

[0075] In this embodiment, the reinforcement positions of the bottom lifting deck 5 and the second lifting deck 7 and the corresponding number of hoisting horses are determined through finite element calculation of the entire section, so as to achieve sufficient strength when the entire section is loaded and hoisted.

[0076] Specifically, in step S2, the following operations need to be performed:

[0077] Check whether the levelness of the upper surface of the bottom fixed deck assembly 1 meets the design requirements. The upper surface of the bottom fixed deck assembly 1 serves as the construction foundation for subsequent steps. It is necessary to ensure that the levelness of the upper surface of the bottom fixed deck assembly 1 meets the design requirements to ensure that subsequent components can be installed in place.

[0078] Optionally, if the levelness of the upper surface of the bottom fixed deck assembly 1 does not meet the design requirements, a thermal process may be used to level the upper surface of the bottom fixed deck assembly 1 .

[0079] Furthermore, in order to ensure that the bottom lifting deck 5 can be installed at a preset position after the lifting is completed, in this embodiment, three non-collinear first distance sensors are provided on the lower surface of each bottom lifting deck block 51.

[0080] In step S4, after the lifting of the bottom lifting deck 5 is completed, it is detected whether the bottom lifting deck 5 is installed in place; if the three first distance sensors of each bottom lifting deck block 51 measure that the distance between the bottom lifting deck block 51 and the bottom fixed deck assembly 1 is within the preset range, it is determined that the bottom lifting deck 5 is installed in place; otherwise, it is determined that the bottom lifting deck 5 is not installed in place.

[0081] Further, after determining that the bottom lifting deck 5 is not installed in place, the bottom lifting deck 5 is reinstalled until the bottom lifting deck 5 is installed in place.

[0082] Furthermore, before reinstalling the bottom lifting deck 5, it is determined whether the first temporary support member 3 corresponding to the bottom lifting deck block 51 needs to be installed in place according to the detection result of the first distance sensor on each bottom lifting deck block 51.

[0083] If the detection result of the first distance sensor on the bottom lifting deck block 51 indicates that the distance between the bottom lifting deck block 51 and the bottom fixed deck assembly 1 is not within the preset range, it is necessary to perform a detection on the installation position of the first temporary support member 3 corresponding to the bottom lifting deck block 51. Otherwise, it is not necessary to perform a detection on the installation position of the first temporary support member 3 corresponding to the bottom lifting deck block 51.

[0084] Specifically, in this embodiment, there are multiple first temporary support members 3 , and each bottom lifting deck block 51 corresponds to at least two first temporary support members 3 .

[0085] The method for detecting whether the first temporary support members 3 are properly installed is to detect whether the height of the top of each first temporary support member 3 is within a set range; if the height of the top of the first temporary support member 3 is greater than the set range, then remove part of the material at the top of the first temporary support member 3 so that the height of the top of the first temporary support member 3 is within the set range. If the height of the top of the first temporary support member 3 is less than the set range, then add material to the top of the first temporary support member 3 so that the height of the top of the first temporary support member 3 is within the set range.

[0086] For example, when removing part of the material at the top of the first temporary support member 3 , a crane can be used in conjunction with a cutting machine to cut off the top of the first temporary support member 3 to a set size.

[0087] For example, when adding material to the top of the first temporary supporting member 3 , a small supporting block may be welded to the top of the first temporary supporting member 3 .

[0088] Furthermore, three non-collinear second distance sensors are provided on the lower surface of each second-layer lifting deck block 71 .

[0089] In step S6, after the second-layer lifting deck 7 is hoisted, it is detected whether the second-layer lifting deck 7 is installed in place; if the three second distance sensors of each second-layer lifting deck block 71 measure that the distance between the second-layer lifting deck block 71 and the bottom-layer lifting deck 5 is within the preset range, it is determined that the second-layer lifting deck 7 is installed in place; otherwise, it is determined that the second-layer lifting deck 7 is not installed in place.

[0090] After determining that the second lifting deck 7 is not installed in place, the second lifting deck 7 is installed again until the second lifting deck 7 is installed in place.

[0091] Furthermore, before reinstalling the second lifting deck 7, it is determined whether the second temporary support member corresponding to the second lifting deck block 71 needs to be detected in place based on the detection result of the second distance sensor on each second lifting deck block 71.

[0092] If the second distance sensor on the second-layer lifting deck block 71 detects that the distance between the second-layer lifting deck block 71 and the bottom-layer lifting deck 5 is not within the preset range, it is necessary to perform a check on the installation position of the second temporary support member 6 corresponding to the second-layer lifting deck block 71. Otherwise, it is not necessary to perform a check on the installation position of the second temporary support member 6 corresponding to the second-layer lifting deck block 71.

[0093] Specifically, in this embodiment, there are multiple second temporary support members 6 , and each second-layer lifting deck block 71 corresponds to at least two second temporary support members 6 .

[0094] The method for detecting whether the second temporary support members 6 are properly installed is to detect whether the height of the top of each second temporary support member 6 is within a set range; if the height of the top of the second temporary support member 6 is greater than the set range, then remove part of the material at the top of the second temporary support member 6 so that the height of the top of the second temporary support member 6 is within the set range. If the height of the top of the second temporary support member 6 is less than the set range, then add material to the top of the second temporary support member 6 so that the height of the top of the second temporary support member 6 is within the set range.

[0095] For example, when removing part of the material at the top of the second temporary support member 6 , a crane can be used in conjunction with a cutting machine to cut off the top of the second temporary support member 6 to a set size.

[0096] For example, when adding material to the top end of the second temporary supporting member 6 , a small supporting block may be welded to the top end of the second temporary supporting member 6 .

[0097] In this embodiment, the overall flatness of the bottom lift deck 5 is ensured first, followed by the proper installation of the first temporary support members 3, ultimately ensuring the installation accuracy of the bottom lift deck 5. The overall flatness of the second lift deck 7 is ensured first, followed by the proper installation of the second temporary support members 6, ultimately ensuring the installation accuracy of the second lift deck 7.

[0098] Specifically, in step S4 , after detecting that the bottom lifting deck 5 is installed in place, the bottom lifting deck 5 is fixedly connected to the fixed support 4 .

[0099] Specifically, in step S6 , after detecting that the second lifting deck 7 is installed in place, the second lifting deck 7 is fixedly connected to the fixed support 4 .

[0100] Further preferably, in this embodiment, along the length direction of the side outer plate 21 , both ends of the bottom lifting deck 5 and both ends of the second lifting deck 7 do not protrude relative to the side outer plate 21 .

[0101] In this embodiment, a plurality of bottom-layer lifting deck blocks 51 are assembled to form the bottom-layer lifting deck 5, thereby dividing the annular segment seam position of the bottom-layer lifting deck 5 into sections. A plurality of second-layer lifting deck blocks 71 are assembled to form the second-layer lifting deck 7, thereby dividing the annular segment seam position of the second-layer lifting deck 7 into sections. Along the length of the side outer plating 21, both ends of the bottom-layer lifting deck 5 and the ends of the second-layer lifting deck 7 do not protrude relative to the side outer plating 21, thereby ensuring that the protruding portion of the lifting deck can be integrally inserted into the hull structure in the dock after installation within the overall section.

[0102] In this embodiment, after step S8 is completed, the first temporary support member 3 and the second temporary support member 6 are removed, and finally the entire section of the car roll-on / roll-off transport ship is formed.

[0103] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. The installation method of the lifting deck in the main section of the car roll-on / roll-off transport ship is characterized in that: The lifting deck comprises a bottom lifting deck (5) and a second lifting deck (7), wherein the bottom lifting deck (5) comprises a plurality of bottom lifting deck blocks (51), and the second lifting deck (7) comprises a plurality of second lifting deck blocks (71); The method for installing the lifting deck in the main section of the car roll-on / roll-off transport ship comprises the following steps: S1, assembling a plurality of bottom-layer lifting deck blocks (51) to form the bottom-layer lifting deck (5), and assembling a plurality of second-layer lifting deck blocks (71) to form the second-layer lifting deck (7); S2. constructing a side outer plate segment assembly (2) at both ends of the bottom fixed deck segment assembly (1), wherein the side outer plate segment assembly (2) includes two side outer plates (21), and the two side outer plates (21) are respectively located at both ends of the bottom fixed deck segment assembly (1); S3, constructing a first temporary support member (3) and a fixed support member (4) on the bottom fixed deck assembly (1), wherein the height of the first temporary support member (3) is lower than the height of the fixed support member (4); S4, hoisting the bottom lifting deck (5) as a whole. After the bottom lifting deck (5) is installed in place, the bottom lifting deck (5) passes through the fixed support member (4) and is supported on the upper end of the first temporary support member (3); S5. Arranging a second temporary support member (6) on the bottom lifting deck (5), wherein the highest point of the second temporary support member (6) is lower than the highest point of the fixed support member (4); S6. Performing overall hoisting of the second lifting deck (7). After the second lifting deck (7) is hoisted into place, the second lifting deck (7) passes through the fixed support member (4) and is supported on the upper end of the second temporary support member (6); S7. Arrange a third temporary support member (8) on the second lifting deck (7), wherein the highest point of the third temporary support member (8) is on the same horizontal plane as the highest point of the fixed support member (4); S8, hoisting the top fixed deck (9) as a whole, supporting the top fixed deck (9) at the highest point of the third temporary support (8) and the highest point of the fixed support (4); Before step S1, the following steps need to be performed: S0, simulating the installation process of the lifting deck in the general section of the car roll-on / roll-off transport ship through finite element numerical simulation software, and determining the optimal positions of the lifting points of the bottom lifting deck (5) and the second lifting deck (7); According to the simulation results of the finite element numerical simulation software, the stress points of the bottom lifting deck (5) and the second lifting deck (7) are strengthened; The lower surface of each bottom lifting deck block (51) is provided with three non-collinear first distance sensors; In the step S4, after the bottom lifting deck (5) is hoisted, it is detected whether the bottom lifting deck (5) is installed in place; if the three first distance sensors of each bottom lifting deck block (51) measure that the distance between the bottom lifting deck block (51) and the bottom fixed deck assembly (1) is within a preset range, it is determined that the bottom lifting deck (5) is installed in place; otherwise, it is determined that the bottom lifting deck (5) is not installed in place.

2. The method for installing a lifting deck in a section of a ro-ro car transport ship according to claim 1, characterized in that: The step S0 includes: S01. Using the finite element numerical simulation software, establish an overall model of the lifting deck in the overall section of the car roll-on / roll-off transport ship; S02. Analyze the stress performance of the bottom lifting deck (5) and the second lifting deck (7), and determine the optimal positions of the lifting points of the bottom lifting deck (5) and the second lifting deck (7).

3. The method for installing a lifting deck in a section of a ro-ro car transport ship according to claim 1, characterized in that: After determining that the bottom lifting deck (5) is not installed in place, the bottom lifting deck (5) is reinstalled until the bottom lifting deck (5) is installed in place.

4. The method for installing a lifting deck in a section of a ro-ro car transport ship according to claim 3, characterized in that: Before reinstalling the bottom lifting deck (5), it is determined whether the first temporary support member (3) needs to be installed in place according to the detection result of the first distance sensor on each bottom lifting deck block (51).

5. The method for installing a lifting deck in a section of a ro-ro car transport ship according to claim 1, characterized in that: In step S2, the following operations need to be performed: Check whether the levelness of the upper surface of the bottom fixed deck assembly (1) meets the design requirements.

6. The method for installing a lifting deck in a section of a ro-ro car transport ship according to claim 1, characterized in that: The lower surface of each second-layer lifting deck block (71) is provided with three non-collinear second distance sensors; In the step S6, after the second-layer lifting deck (7) is hoisted, it is detected whether the second-layer lifting deck (7) is installed in place; if the three second distance sensors of each second-layer lifting deck block (71) measure that the distance between the second-layer lifting deck block (71) and the bottom lifting deck (5) is within a preset range, it is determined that the second-layer lifting deck (7) is installed in place; otherwise, it is determined that the second-layer lifting deck (7) is not installed in place.

7. The method for installing a lifting deck in a section of a ro-ro car carrier according to any one of claims 1 to 6, characterized in that: Along the length direction of the side outer plate (21), both ends of the bottom lifting deck (5) and both ends of the second lifting deck (7) do not protrude relative to the side outer plate (21).

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