A method of installing a multipurpose vessel support block box section

Abstract

The present application relates to the technical field of shipbuilding, and discloses a kind of installation method of multipurpose ship support block box section, comprising the following steps: S1, section is split into middle component, hatch coaming component and lower component;S2, make height reference line and width reference line on support block box;S3, make first reference line and second reference line on middle component, and make height positioning and width positioning line of support block box;S4, height reference line is aligned with height positioning line, width reference line is aligned with width positioning line, and support block box is installed on one side of middle component;S5, middle component is turned over, and step S3 and step S4 are repeated;S6, hatch coaming component, middle component and lower component are positioned and installed. Section is divided into middle component, hatch coaming component and lower component, and when installing support block box, only middle component needs to be turned over, reduces the precision deviation of two sides of bulkhead after turning over, and improves the installation precision of double-sided support block box.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to a method for installing multipurpose ship support block box sections. Background Technology

[0002] The support block box for multipurpose vessels serves as the mounting base for the second-deck hatch cover support blocks, fixing and rotating the support blocks to provide solid physical support for the hatch covers and ensure safe operation of the vessel. Currently, the support block boxes for multipurpose vessels in the shipbuilding industry are mostly installed using a single-sided installation method, that is, the support block box is installed on one side of the bulkhead, requiring only single-sided precision control to complete the installation.

[0003] Some support block boxes are installed on both the bow and stern sides of the transverse bulkhead section. The support block boxes need to be installed on both sides. The traditional installation method is to first form the transverse bulkhead section as a whole, verify that the overall accuracy of the transverse bulkhead section is qualified, first install the support block box on one side of the transverse bulkhead section and check the installation accuracy of the support block box. After the installation accuracy is qualified, the transverse bulkhead section is flipped over as a whole, and the support block box is installed on the reverse side of the transverse bulkhead section and the accuracy of the support block box is checked.

[0004] When implementing the above-mentioned method of installing support block boxes on both sides of the transverse bulkhead section, the overall weight of the section is large, which makes it difficult to turn the section over, resulting in high safety risks and low efficiency. Furthermore, the section itself is prone to deformation under the influence of gravity during the turning process, and the positioning reference of the support block boxes on both sides of the overall section will be deviated, affecting the synchronous control accuracy of the installation of the support block boxes on both sides. Summary of the Invention

[0005] The purpose of this invention is to provide a method for installing multi-purpose ship support block boxes in sections, so as to improve the installation accuracy of double-sided support block boxes.

[0006] To achieve the above objectives, the present invention provides a method for installing multipurpose vessel support block sections, comprising the following steps: S1, according to the installation position of the support block box, the section is divided into a middle component for assembling the support block box, a hatch coaming component located above the middle component in the height direction, and a lower component located below the middle component in the height direction, and the middle component, hatch coaming component and lower component are constructed respectively. S2, make height and width reference lines on the support block box; S3, make a first reference line in the height direction and a second reference line in the width direction on the middle component, and make the height positioning line of the support block box based on the first reference line, and make the width positioning line of each support block box based on the second reference line. S4, Align the height reference line of the support block box with the height positioning line on the middle component, align the width reference line of the support block box with the width positioning line on the middle component, and install the support block box on one side of the bow or stern of the middle component. S5, flip the middle component over, repeat steps S3 and S4, and install the support block box on the other side of the bow or stern of the middle component. S6, positioning and installing the hatch coaming assembly, middle assembly, and lower assembly.

[0007] Optionally, in step S2, the centerline of the support block box in the width direction is used as the width reference line, and the installation reference line in the height direction of the support block box is used as the height reference line.

[0008] Optionally, in step S2, multiple punch points are formed at intervals along the width and height directions on the support block box, and the multiple punch points are connected to form a width reference line and a height reference line.

[0009] Optionally, in step S2, after making the height reference line and the width reference line, the panel of the support block box is subjected to precision testing to ensure that the flatness of the support block box is less than or equal to 4mm, the deviation of the height reference line is ±2mm, and the deviation of the width reference line is ±2mm.

[0010] Optionally, in step S3, the first reference line, the second reference line, the height positioning line, and the width positioning line are calibrated so that the tolerance of each of the first reference line, the second reference line, the height positioning line, and the width positioning line is ±1mm.

[0011] Optionally, in step S4, before installing the support block box, a conformal structure is provided on the bulkhead of the middle component near the closing opening, and the dimension of the conformal structure in the height direction is larger than the dimension of the support block box in the height direction.

[0012] Optionally, in step S4, before installing the support block box, the flatness of each bulkhead of the central component is corrected to ensure that the flatness of each bulkhead is less than or equal to 4mm.

[0013] Optionally, in step S4, the alignment reference of the support block box is calibrated before and after the installation of the support block box to ensure that the alignment tolerance between the height reference line and the height positioning line is ±2mm, the alignment tolerance between the width reference line and the width positioning line is ±2mm, and the flatness of the support box is less than or equal to 4mm.

[0014] Optionally, in step S5, after the mid-section component is overturned, the flatness of the bulkhead of the support block box to be installed on the bow and stern faces of the mid-section component is checked to ensure that the flatness is less than or equal to 4mm.

[0015] Optionally, after installing the hatch coaming assembly, mid-section assembly, and lower section assembly, the height deviation of the support block boxes is re-measured to ensure that the height deviation of the support block boxes in the bow and stern sections is ±2mm.

[0016] Compared with the prior art, the installation method of the multi-purpose vessel support block box section of this invention has the following advantages: The support block box section is divided into a mid-section component, a hatch coaming component, and a lower component, allowing these components to be constructed separately. The height and width positioning lines of the mid-section component are aligned with the height and width reference lines of the support block box, improving the installation accuracy of the support block box on one side. When installing the support block box on the other side, only the mid-section component needs to be flipped, without the need to flip the entire section, reducing the weight of the object to be flipped and minimizing deformation of the mid-section component during flipping. This reduces the accuracy deviation between the two sides of the bulkhead after flipping. Furthermore, the support block box on the other side is installed using the same standard after flipping, improving the installation accuracy of the double-sided support block box. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the multi-purpose ship support block box segment installation method of the present invention, which is divided into individual components. Figure 2 This is a schematic diagram of the structure for creating reference lines on the support block box of the multi-purpose ship support block box of the present invention. Figure 3 This is a schematic diagram of the installation method of the multi-purpose ship support block box section of the present invention, in which a conformal structure is provided on the middle component; Figure 4 This is a schematic diagram of the assembly and alignment of the block components and the middle component in the installation method of the multi-purpose ship support block box of the present invention. Figure 5 This is a calibration diagram of the support block box after installation, illustrating the installation method of the multi-purpose ship support block box segment of the present invention. Figure 6 This is a schematic diagram of the installation of each component in the installation method of the multi-purpose ship support block box section of the present invention.

[0018] In the figure, 1. Hatch coaming assembly, 2. Middle assembly, 21. First baseline, 22. Second baseline, 23. Height positioning line, 24. Width positioning line, 3. Lower assembly, 4. Support block box, 41. Height baseline, 42. Width baseline, 43. Punch point, 5. Conformal structure. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0020] A preferred embodiment of the installation method for multi-purpose ship support block box sections according to the present invention is as follows: Figures 1 to 6 As shown, the installation method of the multipurpose vessel support block box section includes the following steps: S1, according to the installation position of the support block box 4, the section is divided into a middle component 2 for assembling the support block box 4, a hatch coaming component 1 located above the middle component 2 in the height direction, and a lower component 3 located below the middle component 2 in the height direction, and the middle component 2, the hatch coaming component 1 and the lower component 3 are constructed respectively.

[0021] S2, make a height reference line 41 and a width reference line 42 on the support block box 4.

[0022] S3, make a first reference line 21 in the height direction and a second reference line 22 in the width direction on the middle component 2, and make a height positioning line 23 of the support block box 4 with the first reference line 21 as the reference, and make a width positioning line 24 of each support block box 4 with the second reference line 22 as the reference.

[0023] S4, align the height reference line 41 of the support block box 4 with the height positioning line 23 on the middle component 2, align the width reference line 42 of the support block box 4 with the width positioning line 24 on the middle component 2, and install the support block box 4 on one of the bow or stern faces of the middle component 2.

[0024] S5, flip the middle component 2 over, repeat steps S3 and S4, and install the support block box 4 on the other side of the bow or stern of the middle component 2.

[0025] S6. Position and install the hatch coaming assembly 1, the middle assembly 2, and the lower assembly 3.

[0026] In step S1, when disassembling the section containing the support block box 4, the structure above the main deck is disassembled into the hatch cofferdam assembly 1, the structure between the first-floor platform and the main deck below the support block box 4 installation position is disassembled into the middle assembly 2, and the structure below the first-floor platform below the support block box 4 installation position is disassembled into the lower assembly 3. This ensures that all bulkheads used for installing the support block box 4 are on the middle assembly 2, and that the middle assembly 2 does not need to be turned over when installing the support block box 4 on another wall in step S5, reducing the weight requirement for turning over. In this embodiment, the middle assembly 2, hatch cofferdam assembly 1, and lower assembly 3 are constructed using a reverse construction method. The portion above the main deck with a waterline Z=20400mm is disassembled into the hatch cofferdam assembly 1, the portion below the platform with a waterline Z=11740mm is disassembled into the lower assembly, and the portion between the two is the middle assembly 2.

[0027] In step S2, when making the height reference line 41 and width reference line 42 on the support block box 4, the height value of the height reference line 41 of all support block boxes 4 is the same to ensure that the installation height of the support block boxes 4 is consistent. In this embodiment, there are multiple models of support block boxes 4, and the height reference line 41 of different models of support block boxes 4 is made based on the support point of the support box panel.

[0028] In step S3, a first reference line 21 and a second reference line 22 are first made on the middle component 2. The first reference line 21 and the second reference line 22 are the assembly reference lines of the middle component 2 itself. When assembling with the hatch coaming component 1 and the lower component 3 in the future, the relative positions of the hatch coaming component 1, the middle component 2, and the lower component 3 can be determined based on the first reference line 21 and the second reference line 22.

[0029] The height positioning line 23 and the width positioning line 24 serve as positioning reference lines when the support block box 4 is assembled into the middle component 2. These lines ensure the correct installation height and width of the support block box 4. In step S4, the height positioning line 23 and the width positioning line 24 ensure the support block box 4 is installed correctly, thus improving its installation accuracy.

[0030] In this embodiment, the mid-section component 2 uses the waterline Z=13850mm as the first reference line 21, and the longitudinal section lines Y=10000mm (port side segment) and Y=-10000mm (starboard side segment) as the second reference lines 22; the waterline Z=14225mm is used as the height positioning line 23, and the vertical center of the opening on the bulkhead corresponding to the support block box 4 is used as the width positioning line 24, which is parallel to the longitudinal section line.

[0031] In step S4, the support block box 4 is installed on the central component 2 according to the height positioning line 23 and width positioning line 24 around the opening position of the support block box 4 on the bulkhead. In this embodiment, the support block box 4 is first tack welded and then welded to fix it during installation. After tack welding, it is checked whether the height reference line 41 and the width reference line 42 are aligned with the height positioning line 23 and the width positioning line 24 respectively, so as to ensure that the center of the support block box 4 is consistent with the center of the opening position on the transverse bulkhead.

[0032] In step S6, the height of hatch coaming assembly 1 is based on the lower surface of the hatch coaming, and its width is based on the longitudinal section lines Y=10000mm (port side section) and Y=-10000mm (starboard side section). The height of lower assembly 3 is based on the waterline Z=10000mm, and its width is based on the longitudinal section lines Y=10000mm (port side section) and Y=-10000mm (starboard side section). Hatch coaming assembly 1, midships assembly 2, and lower assembly 3 are then positioned and installed. During installation, center punch marks are made on each reference point to assist in positioning.

[0033] In this embodiment, before installing the hatch coaming assembly 1, the middle assembly 2, and the lower assembly 3, the flatness of the closing surface of the hatch coaming assembly 1 and the lower assembly 3 is checked to ensure that the flatness is less than or equal to 4mm and the baseline deviation in the height and width directions is ±2mm. This allows each assembly to be monitored synchronously to improve installation accuracy.

[0034] The installation method of the multi-purpose vessel support block box section divides the section for installing the support block box 4 into a mid-section component 2, a hatch coaming component 1, and a lower component 3. This allows the mid-section component 2, hatch coaming component 1, and lower component 3 to be constructed separately. The height positioning line 23 and width positioning line 24 of the mid-section component 2 are aligned with the height reference line 41 and width reference line 42 of the support block box 4, respectively, improving the installation accuracy of the support block box 4 on one side. When installing the support block box 4 on the other side, only the mid-section component 2 needs to be flipped over, without the need to flip the entire section. This reduces the weight of the object to be flipped and the deformation of the mid-section component 2 during flipping, thereby reducing the accuracy deviation between the two sides of the bulkhead after flipping. Furthermore, the support block box 4 on the other side is installed with the same standard after flipping, improving the installation accuracy of the double-sided support block box 4.

[0035] Optionally, in step S2, the center line in the width direction of the support block box 4 is used as the width reference line 42, and the installation reference line in the height direction of the support block box 4 is used as the height reference line 41.

[0036] The installation baseline is the height of the support points of the support block box 4, which ensures that the support points of the support block box 4 are at the same height after installation. Taking the center line of the width direction of the support block box 4 as the width baseline 42, it can be ensured that each support block box 4 is located in the center position of the support point, thus ensuring accurate positioning of the support block box 4.

[0037] Optionally, in step S2, multiple punch points 43 are formed at intervals along the width and height directions on the support block box 4, and the multiple punch points 43 are connected to form a width reference line 42 and a height reference line 41.

[0038] Multiple center punches 43 are used on the support block box 4 to form the width reference line 42 and the height reference line 41. During assembly, the center punches 43 can be used to help workers accurately determine whether the support block box 4 is positioned precisely. In this embodiment, the center punches 43 are set at the edge of the support block box 4 so that workers can clearly observe the center punches 43.

[0039] Optionally, in step S2, after making the height reference line 41 and the width reference line 42, the panel of the support block box 4 is subjected to precision testing so that the flatness of the support block box 4 is less than or equal to 4mm, the deviation of the height reference line 41 is ±2mm, and the deviation of the width reference line 42 is ±2mm.

[0040] When establishing the height reference line 41 and width reference line 42, making a punch point 43 on the support block box 4 will cause deformation of the support block box 4. Performing a precision test on the support block box 4 can ensure its accuracy during subsequent installation. If the flatness of the support block box 4 does not meet the requirements, the flatness deviation can be corrected by heat treatment.

[0041] In this embodiment, the flatness of the support block box 4 is less than or equal to 4mm, the deviation of the height reference line 41 is ±2mm, and the deviation of the width reference line 42 is ±2mm. By meeting the requirements of flatness and reference line deviation, the overall accuracy of the support block box 4 can be guaranteed, thereby improving the installation accuracy of the support block box 4.

[0042] Optionally, in step S3, the first reference line 21, the second reference line 22, the height positioning line 23, and the width positioning line 24 are calibrated so that the tolerance of each of the first reference line 21, the second reference line 22, the height positioning line 23, and the width positioning line 24 is ±1mm.

[0043] Calibrate the first reference line 21, the second reference line 22, the height positioning line 23, and the width positioning line 24 to ensure the accuracy of their marking, thereby improving the installation accuracy of the support block box 4. In this embodiment, the precision control personnel responsible for inspection and manufacturing record the accuracy tolerances, which are then confirmed by the process technician, and the measurement results are recorded to ensure the installation accuracy of the support block box 4.

[0044] Optionally, in step S4, before installing the support block box 4, a conformal structure 5 is provided on the bulkhead of the middle component 2 near the closing opening. The dimension of the conformal structure 5 in the height direction is larger than the dimension of the support block box 4 in the height direction.

[0045] When installing the support block box 4, pyrotechnic operations are required. The bulkhead near the closure opening on the middle component 2 has less support structure and is a section with lower rigidity. Therefore, a conformal structure 5 is installed on the bulkhead near the closure opening to prevent bulkhead deformation after the support block box 4 is installed. In this embodiment, the conformal structure 5 is specifically made of conformal flat iron with a thickness ≥15mm and a height ≥100mm. This ensures that its dimension in the height direction is greater than that of the support block box 4 in the height direction, covering the height range of the pyrotechnic operations, and ensuring that the flatness of the bulkhead after the support block box 4 is installed meets the requirement of less than or equal to 4mm.

[0046] Optionally, in step S4, before installing the support block box 4, the flatness of each bulkhead of the central component 2 is corrected to ensure that the flatness of each bulkhead is less than or equal to 4mm.

[0047] Before installing the support block box 4, ensure that the flatness of each bulkhead is less than or equal to 4mm. This ensures that the flatness of each bulkhead in the middle component 2 meets the assembly requirements of the support block box 4, providing data support for its installation. Furthermore, since the flatness of the bulkheads and support block boxes 4 meets the same requirement, a synchronous precision control method can be used to position and install the support block boxes 4 for each bulkhead, improving the installation accuracy of the support block boxes 4 on different surfaces such as the bow and stern of the bulkheads. In this embodiment, the flatness of the bulkheads is corrected using a fire-based method.

[0048] Optionally, in step S4, before and after installing the support block box 4, the alignment reference of the support block box 4 is calibrated to ensure that the alignment tolerance between the height reference line 41 and the height positioning line 23 is ±2mm, and the alignment tolerance between the width reference line 42 and the width positioning line 24 is ±2mm, so as to ensure that the flatness of the support box is less than or equal to 4mm.

[0049] Before and after installing the support block box 4, the alignment reference of the support block box 4 is calibrated to ensure that the alignment tolerance and flatness of the support block box 4 are within the set range, thereby improving the installation accuracy of the support block box 4. In this embodiment, the alignment tolerance between the height reference line 41 and the height positioning line 23 is ±2mm, the alignment tolerance between the width reference line 42 and the width positioning line 24 is ±2mm, and the flatness of the support box is less than or equal to 4mm. Its alignment tolerance is the same as the deviation of the reference line of the support block box 4, and its flatness requirement is consistent with the flatness requirement of the support block box 4. This ensures that the support block box 4 and the middle component 2 adopt the same precision control tolerance requirements when installing the support block box 4, thereby improving the installation accuracy of the support block box 4.

[0050] Optionally, in step S5, after the mid-section component 2 is overturned, the flatness of the bulkhead of the support block box 4 to be installed in the bow and stern of the mid-section component 2 is checked to ensure that the flatness is less than or equal to 4mm.

[0051] After turning over, the flatness of the bulkhead to be installed with the support block box 4 is checked. This ensures that the flatness of the bulkhead meets the installation requirements of the support block box 4, avoids the deformation of the middle component 2 caused by hoisting and turning, which affects the flatness of the bulkhead, and improves the installation accuracy of the support block box 4.

[0052] Optionally, after installing the hatch coaming assembly 1, the mid-section assembly 2, and the lower assembly 3, the height deviation of the support block box 4 is re-measured to ensure that the height deviation of the support block box 4 in both the bow and stern sections is ±2mm.

[0053] The hatch coaming assembly 1, the middle assembly 2, and the lower assembly 3 are welded and assembled along the height direction during positioning and installation. This will affect the height accuracy of the support block box 4. Therefore, after each assembly is installed, the height deviation is re-measured to reduce the deviation of each assembly in the height direction and improve the installation accuracy of the support block box 4.

[0054] In summary, this invention provides a method for installing a multi-purpose vessel support block box section. The section is divided into a mid-section assembly, a hatch coaming assembly, and a lower assembly, allowing these components to be constructed separately. The height and width positioning lines of the mid-section assembly are aligned with the height and width reference lines of the support block box, improving the installation accuracy of the support block box on one side. When installing the support block box on the other side, only the mid-section assembly needs to be flipped, eliminating the need to flip the entire section. This reduces the weight of the object being flipped and minimizes deformation of the mid-section assembly during flipping, thereby reducing the accuracy deviation between the two sides of the bulkhead after flipping. Furthermore, the support block box on the other side is installed using the same standards after flipping, improving the installation accuracy of the double-sided support block box.

[0055] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A method for installing multi-purpose vessel support block boxes in sections, characterized in that, Includes the following steps: S1, according to the installation position of the support block box (4), the section is divided into a middle component (2) for assembling the support block box (4), a hatch coaming component (1) located above the height direction of the middle component (2) and a lower component (3) located below the height direction of the middle component (2), and the middle component (2), the hatch coaming component (1) and the lower component (3) are constructed respectively. S2, make a height reference line (41) and a width reference line (42) on the support block box (4). The center line of the width direction of the support block box (4) is used as the width reference line (42), and the installation reference line of the height direction of the support block box (4) is used as the height reference line (41). Multiple punch points (43) are formed at intervals along the width direction and the height direction on the support block box (4). The multiple punch points (43) are connected to form the width reference line (42) and the height reference line (41). S3, make a first reference line (21) in the height direction and a second reference line (22) in the width direction on the middle component (2), and make a height positioning line (23) of the support block box (4) based on the first reference line (21), and make a width positioning line (24) of each support block box (4) based on the second reference line (22). S4, align the height reference line (41) of the support block box (4) with the height positioning line (23) on the middle component (2), align the width reference line (42) of the support block box (4) with the width positioning line (24) on the middle component (2), and install the support block box (4) on one side of the bow or stern of the middle component (2). S5, flip the middle component (2), repeat steps S3 and S4, and install the support block box (4) on the other side of the bow or stern of the middle component (2). S6, Position and install the hatch coaming assembly (1), the middle assembly (2) and the lower assembly (3).

2. The installation method of the multi-purpose vessel support block box section according to claim 1, characterized in that, In step S2, after making the height reference line (41) and the width reference line (42), the panel of the support block box (4) is subjected to precision testing so that the flatness of the support block box (4) is less than or equal to 4mm, the deviation of the height reference line (41) is ±2mm, and the deviation of the width reference line (42) is ±2mm.

3. The installation method for multi-purpose vessel support block sections according to claim 1 or 2, characterized in that, In step S3, the first reference line (21), the second reference line (22), the height positioning line (23), and the width positioning line (24) are calibrated so that the tolerance of each of the first reference line (21), the second reference line (22), the height positioning line (23), and the width positioning line (24) is ±1mm.

4. The installation method of the multi-purpose vessel support block box section according to claim 1 or 2, characterized in that, In step S4, before installing the support block box (4), a conformal structure (5) is installed on the bulkhead of the middle component (2) near the closing opening. The dimension of the conformal structure (5) in the height direction is larger than the dimension of the support block box (4) in the height direction.

5. The installation method of the multi-purpose vessel support block box section according to claim 1 or 2, characterized in that, In step S4, before installing the support block box (4), the flatness of each bulkhead of the middle component (2) is corrected to ensure that the flatness of each bulkhead is less than or equal to 4mm.

6. The installation method of the multi-purpose vessel support block box section according to claim 1 or 2, characterized in that, In step S4, before and after installing the support block box (4), the alignment reference of the support block box (4) is calibrated to ensure that the alignment tolerance between the height reference line (41) and the height positioning line (23) is ±2mm, and the alignment tolerance between the width reference line (42) and the width positioning line (24) is ±2mm, and to ensure that the flatness of the support block box (4) is less than or equal to 4mm.

7. The installation method of the multi-purpose vessel support block box section according to claim 1 or 2, characterized in that, In step S5, after the middle component (2) is overturned, the flatness of the bulkhead of the support block box (4) to be installed in the bow and stern of the middle component (2) is checked to ensure that the flatness is less than or equal to 4mm.

8. The installation method of the multipurpose vessel support block box section according to claim 1 or 2, characterized in that, After installing the hatch coaming assembly (1), the mid-section assembly (2) and the lower section assembly (3), the height deviation of the support block box (4) was re-measured to ensure that the height deviation of the support block box (4) in the bow and stern sections is ±2mm.

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