A method for designing a container pedestal installation for a ship

Abstract

The application belongs to the technical field of ships and discloses a container base mounting design method for ships, wherein for the container base with a cross joint, the container base is designed to be composed of four container bases with single holes or two container bases with double holes according to the number of the cross joint; all the container bases are divided into container bases mounted in a segmented stage, container bases mounted in a total assembly stage and container bases mounted in a dock loading stage according to the mounting positions of the container bases; in the segmented stage, the opening process of the mounting holes of all the container bases is completed; in the process of plate splicing to manufacture the segments, the mounting holes of all the container bases are subjected to precision inspection, and all the container bases mounted in the segmented stage are welded at the corresponding mounting holes; more container bases are moved forward to the segmented stage for mounting, so as to reduce the number and workload of the container bases mounted in the dock loading stage, and good conditions are created for shortening the dock cycle.

Description

Technical Field

[0001] This application relates to the field of marine technology, specifically to a design method for installing a container base for a ship. Background Technology

[0002] Ro-Ro passenger ships are special vessels that can carry passengers, wheeled vehicles, and containers at the same time. Therefore, the vehicle deck of a Ro-Ro passenger ship is equipped with a large number of container bases for securing vehicles and containers.

[0003] In existing technologies, such as Figure 1 As shown, the container base includes a mounting plate with four rectangularly arranged lashing holes. The installation process involves drilling mounting holes in the vehicle deck, inserting the mounting plate into these holes, and then welding the peripheral walls of the mounting plate to the inner walls of the mounting holes. According to container base installation specifications, the installation accuracy must meet requirements of ±3mm for container length, ±2mm for container width, and within 2mm for diagonal height difference. These stringent installation requirements place extremely high demands on the container base.

[0004] However, for ro-ro passenger ships, a large number of container bases need to be arranged on their vehicle decks, which not only involves a wide working area but also a large workload. If the installation is carried out during the dock assembly stage, it will have an extremely adverse impact on the dock production cycle.

[0005] Therefore, there is an urgent need for a design method for installing container bases on ships to solve the above problems. Summary of the Invention

[0006] The purpose of this application is to solve or at least alleviate some or all of the aforementioned problems. Therefore, the purpose of this application is to provide a design method for installing a container base for ships, which optimizes the installation process of the container base, reduces the pressure of dock construction, and creates favorable conditions for shortening the dock cycle.

[0007] To achieve the above objectives, this application adopts the following technical solution: This application provides a design method for installing a container base for a ship, including the following steps: Design phase: For the container base with cross joints, design it as either a combination of four container bases with single holes or a combination of two container bases with double holes, depending on the number of cross joints; divide all container bases into container bases installed in the segmented stage, container bases installed in the assembly stage, and container bases installed in the dock loading stage according to the installation position of each container base. Segmentation Stage: During the sheet metal cutting and panel fabrication process, the drilling process for the mounting holes of all container bases installed in the segmented stage, all container bases installed in the assembly stage, and all container bases installed in the dock assembly stage is completed; during the panel splicing and segment fabrication process, the accuracy of the mounting holes of all container bases installed in the segmented stage, all container bases installed in the assembly stage, and all container bases installed in the dock assembly stage is checked, and all container bases installed in the segmented stage are welded to the corresponding mounting holes. Final assembly stage: Mark and position all container bases installed in the final assembly stage, and weld all container bases installed in the final assembly stage to the corresponding mounting holes; Dock mounting phase: Mark the positions of all container bases installed in the dock mounting phase, and weld all container bases installed in the dock mounting phase to the corresponding mounting holes.

[0008] As an optional solution to the aforementioned design method for the installation of container bases for ships, the design phase also includes the following steps: ensuring that the mounting holes of all container bases are completely staggered from the segmentation lines and plate seams.

[0009] As an optional solution to the aforementioned design method for the installation of container bases for ships, the design phase also includes the following steps: the machining compensation range for the mounting holes of all container bases is 4mm to 6mm.

[0010] As an optional solution to the above-mentioned container base installation design method for ships, the design stage further includes the following steps: both the container base with a single hole and the container base with a double hole include a mounting plate, the peripheral sidewall of the mounting plate is used for welding to the inner wall of the mounting hole, the peripheral sidewall includes a first welding surface and a second welding surface, the first welding surface is perpendicular to the plate surface of the mounting plate, and the included angle between the second welding surface and the first welding surface is 40°.

[0011] As an optional solution for the design method of the container base installation for ships, the design stage also includes the following steps: the mounting plate of the container base with a single hole is circular in shape, and both sides of the mounting plate of the container base with a single hole are provided with quarter point punch marks. And / or, the design phase also includes the following steps: the mounting plate of the container base with double holes is racetrack shaped, and both surfaces of the mounting plate of the container base with double holes are provided with six-point punch marks.

[0012] As an optional solution to the aforementioned design method for installing a container base for a ship, the design phase further includes the following steps: the thickness of the mounting plate of the container base with a single hole and the thickness of the mounting plate of the container base with a double hole are both the same as the thickness of the vehicle deck.

[0013] As an optional solution to the aforementioned design method for installing a container base for a ship, the following steps are also included in the segmentation stage: during the process of cutting and manufacturing the plates, the length and width deviation of the plates should not exceed 1.5mm, and the straightness deviation of the plates should not exceed 2mm.

[0014] As an optional solution to the aforementioned design method for installing a container base for a ship, the segmentation stage also includes the following steps: After the sheet metal is cut, check the flatness of the sheet metal and the quality of the mounting holes. If the flatness of the sheet metal and / or the quality of the mounting holes do not meet the requirements, they need to be adjusted to meet the requirements before proceeding to the next process.

[0015] As an optional solution to the above-mentioned design method for the installation of container bases for ships, the assembly stage also includes the following steps: marking and positioning all container bases installed in the assembly stage, with a marking deviation of no more than 1mm. And / or, the dock loading stage also includes the following steps: marking and positioning all container bases installed in the dock loading stage, with a marking deviation of no more than 1mm.

[0016] As an optional solution to the above-mentioned container base installation design method for ships, the assembly stage also includes the following steps: first welding the butt joint between the container base installed in the assembly stage and the vehicle deck, and then welding the container base installed in the assembly stage and the structural fillet weld. And / or, the dock loading phase also includes the following steps: first welding the joint between the container base installed in the dock loading phase and the vehicle deck, and then welding the container base installed in the dock loading phase and the structural fillet weld.

[0017] The beneficial effects of this application are as follows: The container base installation design method provided in this application designs the container base as a scheme composed of multiple independent container bases based on the relationship between the installation position and the joints. Then, the container bases are divided into different types according to their installation positions. The installation of more container bases is moved forward to the section stage for pre-assembly, leaving only some container bases that cross the joints to be supplemented in the final assembly stage and the dock loading stage. This minimizes the number of container bases and workload in the dock loading stage, reduces the construction pressure in the dock loading stage, and creates favorable conditions for shortening the dock cycle. Attached Figure Description

[0018] Figure 1 This is a structural diagram of a container base provided by existing technology.

[0019] Figure 2 This is a schematic diagram of the structure of a container base with a single hole provided in an embodiment of this application.

[0020] Figure 3 This is a schematic diagram of the structure of a container base with two holes provided in an embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the welding between the container base and the vehicle deck provided in an embodiment of this application.

[0022] Figure 5 This is a structural schematic diagram of the container base provided in the embodiment of this application under normal installation conditions.

[0023] Figure 6 This is a schematic diagram of the container base provided in the embodiment of this application in the reverse installation state.

[0024] In the picture: 100. Vehicle deck; 200. Container base with single hole; 300. Container base with double hole; 1. Mounting plate; 11. First welding surface; 12. Second welding surface; 13. Quarter-point punch mark; 14. Six-point punch mark; 2. Bowl part. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0026] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] In the description of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] It is worth noting that the orientation or positional relationship indicated by "top", "bottom", "upper", "lower", "left", "right", "front", "rear" etc. in this application is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the purpose of simplifying the description of this application and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0029] The technical solution of this application will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] This application provides a design method for installing a container base for a ship, including the following steps: Design phase: such as Figures 2 to 3 As shown, the container base with cross joints is designed to consist of four container bases 200 with single holes or two container bases 300 with double holes, depending on the number of cross joints. All container bases are divided into container bases installed in the segmented stage, container bases installed in the assembly stage, and container bases installed in the dock loading stage according to the installation position of each container base. Segmentation Stage: During the sheet metal cutting and panel fabrication process, the drilling process for the mounting holes of all container bases installed in all segmented stages, all container bases installed in all assembly stages, and all container bases installed in the dock assembly stage is completed; during the panel splicing and segment fabrication process, the accuracy of the mounting holes of all container bases installed in all segmented stages, all container bases installed in all assembly stages, and all container bases installed in the dock assembly stage is checked, and all container bases installed in all segmented stages are welded to the corresponding mounting holes. Final assembly stage: Mark the positions of all container bases installed in the final assembly stage, and weld all container bases installed in the final assembly stage to the corresponding mounting holes. Dock mounting phase: Mark the positions of all container bases installed during the dock mounting phase, and weld all container bases installed during the dock mounting phase to the corresponding mounting holes.

[0031] The container base installation design method provided in this application designs the container base as a scheme composed of multiple independent container bases based on the relationship between the installation position and the joints. Then, the container bases are divided into different types according to their installation positions. The installation of more container bases is moved forward to the section stage for pre-assembly, leaving only some container bases that cross the joints to be supplemented in the final assembly stage and the dock loading stage. This minimizes the number of container bases to be installed in the dock loading stage, reduces the construction pressure in the dock loading stage, and creates favorable conditions for shortening the dock cycle.

[0032] In other words, the container base installation design method for ships provided in this application optimizes the entire container base spanning segment joints and assembly joints in the prior art into a structural scheme composed of four container bases 200 with single holes, or a structural scheme composed of two container bases 300 with double holes. This allows the installation of these container bases spanning joints to be moved forward to the segment stage for pre-assembly, instead of leaving them all to be installed in the dock loading stage, thereby reducing the construction pressure in the dock loading stage and creating favorable conditions for shortening the dock cycle.

[0033] In some embodiments, the design phase further includes the following steps: completely staggering the mounting holes of all container bases from the segmentation lines and panel seams, so that subsequent mounting hole drilling can be performed using CNC equipment, saving processing time compared to manual drilling. Furthermore, the container bases are positioned to align with the structural locations of the vehicle deck 100, avoiding gaps that would require additional reinforcing ribs.

[0034] In some embodiments, the design phase further includes the following steps: determining the node style for opening mounting holes on the vehicle deck 100, so as to facilitate CNC cutting of the entire ship for opening holes and improve the efficiency of the opening process.

[0035] Continue as Figure 2 As shown, the design phase also includes the following steps: the mounting plate 1 of the container base 200 with a single hole is circular in shape, and both surfaces of the mounting plate 1 of the container base 200 with a single hole are provided with quarter-point punch marks 13. In practice, during the ordering phase, the container base manufacturer is required to add a set of quarter-point punch marks 13 to the mounting plate 1 of the container base.

[0036] Continue as Figure 3As shown, the design phase also includes the following steps: the mounting plate 1 of the container base 300 with double holes is racetrack-shaped, and both surfaces of the mounting plate 1 of the container base 300 with double holes are provided with six-point center punch marks 14. In actual practice, during the ordering phase, the container base manufacturer is required to add a set of four-point center punch marks 13 to the mounting plate 1 of the container base.

[0037] In some embodiments, such as Figure 4 As shown, the design phase also includes the following steps: both the container base 200 with a single hole and the container base 300 with a double hole include a mounting plate 1. The peripheral sidewall of the mounting plate 1 is used for welding to the inner wall of the mounting hole. The peripheral sidewall includes a first welding surface 11 and a second welding surface 12. The first welding surface 11 is set perpendicular to the plate surface of the mounting plate 1. The included angle between the second welding surface 12 and the first welding surface 11 is 40°, which is conducive to welding and fixing the peripheral sidewall of the mounting plate 1 to the inner wall of the mounting hole.

[0038] Furthermore, both the container base 200 with a single hole and the container base 300 with a double hole include a bowl 2, which is welded and fixed to the mounting plate 1 near the first welding surface 11.

[0039] In addition, the design phase includes the following steps: the installation data of all container bases are consistent with the hull baseline of the corresponding section, and the inspection data of the opening spacing of the container bases is added to ensure the installation accuracy of the container bases.

[0040] In some embodiments, the design phase further includes the following steps: the thickness of the mounting plate 1 of the container base 200 with a single hole and the thickness of the mounting plate 1 of the container base 300 with a double hole are both the same as the thickness of the vehicle deck 100. For example, the thickness of the vehicle deck 100 is 18 mm, the thickness of the mounting plate 1 is 18 mm, the length of the first welding surface 11 in the thickness direction of the mounting plate 1 is 2 mm, and the inclination angle of the second welding surface 12 relative to the first welding surface 11 is 40°.

[0041] In some embodiments, the design phase further includes the following steps: the machining compensation range for the mounting holes of all container bases is 4mm to 6mm, such as 4mm, 4.1mm, 4.2mm, 4.3mm, 4.4mm, 4.5mm, 4.6mm, 4.7mm, 4.8mm, 4.9mm, 5mm, 5.1mm, 5.2mm, 5.3mm, 5.4mm, 5.5mm, 5.6mm, 5.7mm, 5.8mm, 5.9mm, 6mm, etc., which will not be listed here.

[0042] In some embodiments, the design phase further includes the following steps: the installation accuracy of all container bases meets the following requirements: width direction dimensional deviation ±2mm; length direction dimensional deviation ±3mm; diagonal intersection height difference not greater than 2mm; diagonal dimensional deviation of 20-foot container ±6mm; diagonal dimensional deviation of 40-foot container ±6.5mm.

[0043] In some embodiments, the segmentation stage further includes the following steps: during the process of cutting the sheet metal to make the panel, the length and width deviation of the panel should not exceed 1.5mm, and the straightness deviation of the panel should not exceed 2mm.

[0044] In some embodiments, the segmentation stage further includes the following steps: after the sheet material is cut, check the flatness of the sheet and the quality of the mounting holes. If the flatness of the sheet and / or the quality of the mounting holes do not meet the requirements, they need to be adjusted to meet the requirements before proceeding to the next process.

[0045] Furthermore, during the segmented assembly process of the panels, the panels are assembled on a dedicated panel assembly steel platform.

[0046] In some embodiments, the assembly stage further includes the following steps: marking and positioning all container bases installed in the assembly stage with a marking deviation of no more than 1 mm. In some embodiments, the assembly stage further includes the following steps: first welding the butt joint between the container base installed in the assembly stage and the vehicle deck 100, and then welding the fillet weld between the container base installed in the assembly stage and the structure. In some embodiments, the dock loading stage further includes the following steps: marking and positioning all container bases installed during the dock loading stage, with a marking deviation of no more than 1mm.

[0047] In some embodiments, the dock loading stage further includes the following steps: first welding the joint between the container base installed in the dock loading stage and the vehicle deck 100, and then welding the container base installed in the dock loading stage and the structural fillet weld.

[0048] In practical applications, during the assembly and dock installation phases, the four-quarter mark (13) or six-quarter mark (14) of the container base is aligned with the crosshairs of the mounting holes. Semi-automatic CO2 welding is then used for welding. First, the butt joint between the container base and the vehicle deck 100 is welded, followed by the fillet weld between the container base and the structure. After all container base welding is completed, the butt joint between it and the vehicle deck 100 undergoes a vacuum test. Once the tightness test is passed, the container base is cleaned and recoated, and protected to prevent dust or water accumulation. Furthermore, container trial operations are conducted according to the design-provided trial test procedures, and are organized as soon as the integrity requirements of each area are met, in order to reduce dock or pier work, improve efficiency, and shorten the construction cycle.

[0049] In some embodiments, the container base is installed in two ways: normal installation and reverse installation, wherein, for example... Figure 5 As shown, when the bowl-shaped part 2 of the container base is located below the vehicle deck 100, the container base is in a normal installation state; as Figure 6 As shown, when the bowl part 2 of the container base is located above the vehicle deck 100, the container base is in a reverse installation state.

[0050] Furthermore, the container base installation design method for ships provided in this application also includes process control. Process control involves inspecting and controlling the precision of each stage to ensure the installation accuracy of the container base. This process control includes ensuring precision at each stage, such as material cutting and drilling, receiving sectional panels, marking and positioning sectional sections, precision control during the final sectional assembly and positioning stage, precision control during the final assembly and dockside assembly of the container base, and test container inspection.

[0051] In summary, the container base installation design method for ships provided in this application has the following advantages: 1) It enables the pre-assembly of container bases to meet accuracy requirements during the segmented stage, greatly shortening the dry dock construction cycle. 2) It breaks up the previously interconnected shared container bases at the assembly joints, creating favorable preconditions for the pre-assembly of container bases during the segmented stage. 3) It optimizes the segment division and plate joint arrangement, reducing the impact of segment joints and plate joints on container positions, and improving the CNC opening rate and segmented pre-assembly rate of container bases. 4) It optimizes the opening nodes of the corresponding reinforcement structures of the container base, enabling CNC cutting, changing the previous manual cutting method, and greatly improving work efficiency. 5) It optimizes the welding bevel nodes of the container base (the inclination angle design of the second welding surface 12), reducing the welding filler amount and facilitating welding deformation control. 6) It changes the previous method of using the hull structure as the positioning and installation reference for outfitting components. This ship uses the hull reference line as the positioning reference for container base installation, ensuring the consistency of segment fabrication, assembly, mounting reference, and container base installation reference.

[0052] Shipyard tests have verified that this container base installation design method for ships can bring the following benefits: 1) Shortened docking time: Based on the pallet information of the container bases pre-installed in the section and assembly stages, the implementation of this process can reduce the number of container bases installed in the dock stage by a total of 386. 2) Container trial work is moved from the dock stage to the assembly stage. A total of 176 container positions can be trialed on the assembly ground. Each container position trial occupies about 0.5 hours of crane time, which can save 88 hours of dock trial crane time. 3) Optimized beveling of the peripheral sidewalls of the container base installation plate 1 saves welding materials: Compared with the 45° beveling design, the welding material quota required for the 413 container bases on the whole ship is 1321.6 kg. After optimization to a 40° beveling, welding materials are saved by about 15%, which is 198.24 kg of welding material. 4) Optimization of the opening nodes of the container base reinforcement structure: After optimization, the opening of the container base reinforcement structure that originally required manual cutting can now be cut in one go by CNC cutting. There are a total of 413 container bases on the ship. If the manual cutting of the opening is calculated at 0.5 hours per opening, 206.5 hours can be saved.

[0053] Obviously, the above embodiments of this application are merely examples for clear illustration and are not intended to limit the implementation of this application. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A design method for installing a container base for ships, characterized in that, Includes the following steps: Design phase: For the container base with cross joints, it is designed to consist of four container bases with single holes (200) or two container bases with double holes (300) depending on the number of cross joints; All container bases are divided into container bases installed in the segmented stage, container bases installed in the assembly stage and container bases installed in the dock loading stage according to the installation position of each container base. Segmentation Stage: During the sheet metal cutting and panel fabrication process, the drilling process for the mounting holes of all container bases installed in the segmented stage, all container bases installed in the assembly stage, and all container bases installed in the dock assembly stage is completed; during the panel splicing and segment fabrication process, the accuracy of the mounting holes of all container bases installed in the segmented stage, all container bases installed in the assembly stage, and all container bases installed in the dock assembly stage is checked, and all container bases installed in the segmented stage are welded to the corresponding mounting holes. Final assembly stage: Mark and position all container bases installed in the final assembly stage, and weld all container bases installed in the final assembly stage to the corresponding mounting holes; Dock mounting phase: Mark the positions of all container bases installed in the dock mounting phase, and weld all container bases installed in the dock mounting phase to the corresponding mounting holes.

2. The method for installing a ship container base according to claim 1, characterized in that, The design phase also includes the following steps: ensuring that all container base mounting holes are completely staggered from segmentation lines and panel seams.

3. The method for installing a ship container base according to claim 2, characterized in that, The design phase also includes the following steps: the machining compensation range for all container base mounting holes is 4mm to 6mm.

4. The method for installing a ship container base according to claim 2, characterized in that, The design phase also includes the following steps: both the container base (200) with a single hole and the container base (300) with a double hole include a mounting plate (1), the peripheral sidewall of the mounting plate (1) is used to weld to the inner wall of the mounting hole, the peripheral sidewall includes a first welding surface (11) and a second welding surface (12), the first welding surface (11) is perpendicular to the plate surface of the mounting plate (1), and the included angle between the second welding surface (12) and the first welding surface (11) is 40°.

5. The method for installing a ship container base according to claim 4, characterized in that, The design phase also includes the following steps: the mounting plate (1) of the container base (200) with a single hole is circular in shape, and both sides of the mounting plate (1) of the container base (200) with a single hole are provided with quarter point punch marks (13). And / or, the design phase also includes the following steps: the mounting plate (1) of the container base (300) with double holes is in the shape of a racetrack, and both sides of the mounting plate (1) of the container base (300) with double holes are provided with six-point punch marks (14).

6. The method for installing a ship container base according to claim 4, characterized in that, The design phase also includes the following steps: the thickness of the mounting plate (1) of the container base (200) with a single hole and the thickness of the mounting plate (1) of the container base (300) with a double hole are both the same as the thickness of the vehicle deck (100).

7. The method for installing a ship container base according to any one of claims 1-6, characterized in that, The segmentation stage also includes the following steps: during the process of cutting the sheet metal into panels, the deviation of the length and width of the panels should not exceed 1.5mm, and the deviation of the straightness of the panels should not exceed 2mm.

8. The method for installing a ship container base according to claim 7, characterized in that, The segmentation stage also includes the following steps: After the sheet material is cut, check the flatness of the sheet and the quality of the mounting holes. If the flatness of the sheet and / or the quality of the mounting holes do not meet the requirements, they need to be adjusted to meet the requirements before proceeding to the next process.

9. The method for installing a ship container base according to claim 7, characterized in that, The assembly stage also includes the following steps: marking and positioning all container bases installed in the assembly stage, with a marking deviation of no more than 1mm. And / or, the dock loading stage also includes the following steps: marking and positioning all container bases installed in the dock loading stage, with a marking deviation of no more than 1mm.

10. The method for installing a ship container base according to claim 9, characterized in that, The assembly stage also includes the following steps: first, welding the butt joint between the container base installed in the assembly stage and the vehicle deck (100), and then welding the container base installed in the assembly stage and the structural fillet weld. And / or, the dock loading phase also includes the following steps: first welding the butt joint between the container base installed in the dock loading phase and the vehicle deck (100), and then welding the container base installed in the dock loading phase and the structural fillet weld.

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