Welding method for fin structure box
By opening larger mounting holes on the hull and adjusting the position and angle of the anti-roll fin structure box using adjustment components, combined with multiple welding fixation, the installation accuracy problem of the anti-roll fin structure box of large cruise ships was solved, achieving high-precision installation and normal operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD
- Filing Date
- 2023-09-12
- Publication Date
- 2026-07-07
AI Technical Summary
The anti-roll fin structure box of large cruise ships is difficult to install due to its high precision requirements.
The method of first installing and debugging and then welding and fixing is adopted. By opening larger mounting holes on the hull, the position and angle of the anti-roll fin structure box are adjusted using adjustment components, and multiple welds are gradually formed and continuously welded to ensure precise installation.
The anti-roll fin structure box was installed with high precision to the hull, meeting the installation accuracy requirements and ensuring the normal working efficiency of the anti-roll fin.
Smart Images
Figure CN116985975B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of marine technology, and in particular to a method for welding a box-mounted anti-roll fin structure. Background Technology
[0002] Anti-roll fins are currently the most effective anti-roll device. Installed on the bilges of both sides of the ship, they have an airfoil-shaped cross-section and are also known as side rudders. By rotating the anti-roll fins through a control mechanism, the water flow generates a force on them, thus creating an anti-roll torque to reduce rolling and consequently reduce the ship's heave. This device has a complex structure and is relatively expensive.
[0003] Vessels equipped with anti-roll fins can improve ship safety and seaworthiness; improve working conditions on board and increase crew efficiency; prevent cargo collisions and damage; increase ship speed in wind and waves, save fuel, and extend the service life of other ship equipment; and ensure special operations, such as helicopter take-off and landing, and accurate use of observation instruments.
[0004] As a whole unit, the anti-roll fin structure box of a large cruise ship is large in size and weight, and the precision requirements during the installation process are very high. Each step of the installation process needs to be effectively controlled to ensure the installation accuracy and allow the anti-roll fin structure box to be successfully installed at the opening of the cruise ship hull.
[0005] Therefore, there is an urgent need for a box-mounted welding method for anti-sway fin structures to solve the above-mentioned technical problems. Summary of the Invention
[0006] The purpose of this invention is to propose a method for assembling and welding anti-roll fin structure boxes, which can meet the installation accuracy requirements of anti-roll fin structure boxes and hulls of large cruise ships.
[0007] To achieve this objective, the present invention adopts the following technical solution:
[0008] The method for welding the anti-roll fin structure box is used to weld the anti-roll fin structure box to the hull. The welding steps are as follows:
[0009] S1. Mounting holes are provided on the outer side wall of the hull, and the opening size of the mounting holes is larger than the circumferential size of the anti-roll fin structure box.
[0010] S2. The anti-roll fin structure box is pulled up vertically by the first adjustment component so that the anti-roll fin structure box and the mounting hole are on the same horizontal plane. Then the anti-roll fin structure box is moved to the side where the hull is located by the second adjustment component.
[0011] S3. The hull is marked with a baseline in the bow and stern direction. Rotate the anti-roll fin structure box to extend it in the width direction of the ship. Adjust the clamping angle between the anti-roll fin structure box and the baseline so that the anti-roll fin structure box can be filled into the mounting hole.
[0012] S4. Spot weld the bottom of the above-mentioned anti-roll fin structure box to the lower edge line of the above-mentioned mounting hole to form the first weld.
[0013] S5. According to the gap size between the anti-roll fin structure box and the mounting hole, cut the adjustment plate of the corresponding size, spot weld the adjustment plate to the hull to form the second weld, and spot weld the adjustment plate to the anti-roll fin structure box to form the third weld.
[0014] S6. The above-mentioned anti-roll fin structure box is spot welded to the hull at both ends in the bow and stern directions to form the fourth weld and the fifth weld.
[0015] S7. Perform continuous welding on the first weld, the second weld, the third weld, the fourth weld and the fifth weld respectively.
[0016] As a preferred technical solution of the above-mentioned anti-sway fin structure box assembly and welding method, the first adjustment component includes a first lifting rope and a first driving component. The upper end surface of the anti-sway fin structure box is provided with a plurality of lifting points at intervals. The first lifting rope is provided in a one-to-one correspondence with the lifting points. One end of the first lifting rope is fixed to the anti-sway fin structure box at the lifting point position, and the other end is fixed to the output end of the first driving component. The first driving component drives the anti-sway fin structure box to reciprocate in the vertical direction through the first lifting rope.
[0017] As a preferred technical solution for the above-mentioned anti-sway fin structure box assembly and welding method, multiple lifting points are distributed circumferentially on the upper end surface of the anti-sway fin structure box.
[0018] As a preferred technical solution of the above-mentioned anti-roll fin structure box assembly and welding method, the second adjustment component includes a second lifting rope and a second driving component. The end face of the anti-roll fin structure box facing the hull side is provided with a plurality of towing points. The second lifting rope corresponds to each of the towing points. One end of the second lifting rope is fixed to the anti-roll fin structure box at the towing point position, and the other end is fixed to the second driving component. The second driving component drives the anti-roll fin structure box to move along the side of the hull through the second lifting rope.
[0019] As a preferred technical solution for the above-mentioned anti-sway fin structure box assembly and welding method, multiple dragging points are spaced apart along the length direction of the anti-sway fin structure box.
[0020] As a preferred technical solution of the above-mentioned anti-sway fin structure box assembly and welding method, the anti-sway fin structure box includes a box body and anti-sway fins. The box body has an installation cavity. One end of the anti-sway fin is rotatably connected to the box body in the installation cavity. The axial direction of the rotation axis intersects with the groove depth direction of the installation cavity. The other end of the anti-sway fin can selectively enter and exit the installation cavity.
[0021] As a preferred technical solution for the above-mentioned anti-sway fin structure box assembly and welding method, the anti-sway fin structure box is angled at 15° with the baseline and is in the vertical direction, with the rotation axis of the anti-sway fin located in the upper position and the free end of the anti-sway fin located in the lower position.
[0022] As a preferred technical solution for the above-mentioned anti-sway fin structure box assembly welding method, the length direction of the anti-sway fin is parallel to the length direction of the box body.
[0023] As a preferred technical solution for the above-mentioned anti-roll fin structure box assembly and welding method, a plurality of reinforcing members are provided in the hull along its bow-stern direction, and a fixing groove is provided in the middle of the reinforcing member, and the anti-roll fin structure box is inserted into the fixing groove along the groove depth direction.
[0024] As a preferred technical solution of the above-mentioned anti-roll fin structure box welding method, a third driving member is provided in the hull, and the output end of the third driving member is connected to the rotation shaft of the anti-roll fin for driving the anti-roll fin to rotate around the rotation shaft.
[0025] Beneficial effects of this invention:
[0026] S1 is the preparation stage, where mounting holes larger than the anti-roll fin structure box are opened on the hull to provide adjustment margin for subsequent installation. S2 and S3 are the installation and debugging stages. First, the anti-roll fin structure box is raised to the vertical height corresponding to the mounting hole using the first adjustment component. Then, the anti-roll fin structure box is pulled to the side of the hull using the second adjustment component, which shortens the horizontal distance between the anti-roll fin structure box and the mounting hole to facilitate subsequent adjustments. Since the anti-roll fin has a retracted state and an extended state, the retracted state is when the length direction of the anti-roll fin is consistent with the length direction of the window. The deployed state refers to the anti-roll fins being deployed along the width of the hull. Since the anti-roll fins need to repeatedly switch between their retracted and deployed states while the ship is in motion, it is also necessary to consider whether the deployed state of the anti-roll fins meets the usage requirements during installation. The anti-roll fin structure box is rotated instead of the anti-roll fins themselves. Based on the baseline marked along the bow and stern of the hull, which is parallel to the horizontal plane, the actual angle formed between the anti-roll fin structure box and the baseline is determined by rotating the axis. The actual angle is compared with the predicted angle. If the difference is within the range that does not affect the working efficiency of the anti-roll fins, then the actual angle is set as the installation angle.
[0027] S4 to S7 represent the welding and fixing stage. First, the bottom of the anti-roll fin structure box is aligned with the lower edge of the mounting hole on the hull, and tack welded for initial fixing, forming the first weld. Next, the distance between the upper part of the anti-roll fin structure box and the upper edge of the mounting hole is measured, and an adjustment plate is cut to cover the gap. Tack welds are then performed on both the hull and the anti-roll fin structure box, forming the second and third welds respectively. At this point, the upper and lower sides of the anti-roll fin structure box are initially fixed to the hull. Based on this, the anti-roll fin structure box is tack welded to the hull on both sides in the bow and stern directions, forming the fourth and fifth welds. This completes the initial fixing of the anti-roll fin structure box to the hull. Finally, the first, second, third, fourth, and fifth welds are continuously welded to complete the fixing of the anti-roll fin structure box to the hull.
[0028] This design, through a process of first installing and debugging, and then fixing it with two welding operations, completes the installation and fixation of the anti-roll fin structure box to the large ship hull, thus meeting the installation accuracy requirements. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.
[0030] Figure 1 This is a flowchart of the anti-roll fin structure box assembly welding method provided in the embodiments of the present invention;
[0031] Figure 2 This is a welding structure diagram of the anti-roll fin structure box and the hull provided in an embodiment of the present invention;
[0032] Figure 3 This is a diagram illustrating the installation process of the anti-roll fin structure box and reinforcing member provided in an embodiment of the present invention;
[0033] Figure 4 This is a front view of the anti-roll fin structure box provided in an embodiment of the present invention;
[0034] Figure 5 This is a top view of the anti-roll fin structure box provided in an embodiment of the present invention;
[0035] Figure 6 This is a schematic diagram of the anti-roll fin structure box and the baseline provided in an embodiment of the present invention.
[0036] In the picture:
[0037] 10. Hull; 11. First weld; 12. Second weld; 13. Fourth weld; 14. Fifth weld; 15. Reinforcing member; 151. Fixing groove; 16. Baseline;
[0038] 20. Anti-roll fin structure box; 21. Anti-roll fin; 22. Box body;
[0039] 30. Adjusting plate; 31. Third weld;
[0040] 41. First hoisting rope; 51. Second hoisting rope. Detailed Implementation
[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.
[0042] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to 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 invention based on the specific circumstances.
[0043] In this invention, unless otherwise explicitly 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 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 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.
[0044] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not 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, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.
[0045] like Figures 1 to 6As shown, this application provides a method for welding a roll-damping fin structure box 20 to the hull 10. The welding steps are as follows:
[0046] S1. Mounting holes are provided on the outer side wall of the hull 10, and the opening size of the mounting holes is larger than the circumferential size of the anti-roll fin structure box 20.
[0047] S2. The anti-roll fin structure box 20 is pulled up vertically by the first adjustment component so that the anti-roll fin structure box 20 and the mounting hole are on the same horizontal plane. Then the anti-roll fin structure box 20 is moved toward the side of the hull 10 by the second adjustment component.
[0048] S3. The hull 10 has a baseline 16 marked on its bow and stern. Rotate the anti-roll fin structure box 20 to extend it along the width of the ship. Adjust the clamping angle between the anti-roll fin structure box 20 and the baseline 16 so that the anti-roll fin structure box 20 can be inserted into the mounting hole.
[0049] S4. Spot weld the bottom of the anti-roll fin structure box 20 to the lower edge line of the mounting hole to form the first weld 11;
[0050] S5. According to the gap size between the anti-roll fin structure box 20 and the mounting hole, cut the corresponding size adjustment plate 30, spot weld the adjustment plate 30 to the hull 10 to form the second weld 12, and spot weld it to the anti-roll fin structure box 20 to form the third weld 31.
[0051] S6. The anti-roll fin structure box 20 is spot welded to the hull 10 at both ends in the bow and stern directions to form the fourth weld 13 and the fifth weld 14.
[0052] S7. Perform continuous welding on the first weld 11, the second weld 12, the third weld 31, the fourth weld 13 and the fifth weld 14 respectively.
[0053] S1 is the preparation stage, in which a mounting hole larger than the anti-roll fin structure box 20 is opened on the hull 10 to provide adjustment margin for subsequent installation. S2 and S3 are the installation and debugging stages. First, the anti-roll fin structure box 20 is raised to the vertical height corresponding to the mounting hole using the first adjustment component. Then, the anti-roll fin structure box 20 is pulled to the side of the hull 10 using the second adjustment component, which shortens the horizontal distance between the anti-roll fin structure box 20 and the mounting hole to facilitate subsequent adjustment. Since the anti-roll fin 21 has a retracted state and an extended state, the retracted state is when the length direction of the anti-roll fin 21 is consistent with the length direction of the hull 10, and the extended state is... The state refers to the anti-roll fin 21 being deployed along the width direction of the hull 10. Since the anti-roll fin 21 needs to repeatedly change between its retracted and deployed states when the ship is sailing, it is also necessary to consider whether the anti-roll fin 21 meets the usage requirements when deployed during installation. Rotating the anti-roll fin structure box 20 is used instead of rotating the anti-roll fin 21. According to the baseline 16 marked along the bow and stern direction of the hull 10, the baseline 16 is parallel to the horizontal plane, and the actual angle is formed between the anti-roll fin structure box 20 and the baseline 16. The actual angle is compared with the predicted angle. If the difference is within the range that does not affect the working efficiency of the anti-roll fin 21, then the actual angle is set as the installation angle.
[0054] S4 to S7 are the welding and fixing stages. First, align the bottom of the anti-roll fin structure box 20 with the lower edge of the mounting hole of the hull 10, and perform tack welding for initial fixing, forming the first weld 11. Measure the distance between the upper part of the anti-roll fin structure box 20 and the upper edge of the mounting hole, cut the adjustment plate 30 to cover the gap between them, and perform tack welding on the hull 10 and the anti-roll fin structure box 20 respectively, forming the second weld 12 and the third weld 31 respectively. At this point, the upper and lower sides of the anti-roll fin structure box 20 are initially fixed to the hull 10. Based on this, perform tack welding on both sides of the anti-roll fin structure box 20 in the bow and stern directions to the hull 10, forming the fourth weld 13 and the fifth weld 14. This completes the initial fixing of the anti-roll fin structure box 20 to the hull 10. Finally, the first weld 11, the second weld 12, the third weld 31, the fourth weld 13 and the fifth weld 14 are continuously welded to complete the fixation of the anti-roll fin structure box 20 to the hull 10.
[0055] This design, through installation and debugging followed by two welding fixations, completes the installation and fixation of the anti-roll fin structure box 20 to the hull 10, thus meeting the installation accuracy requirements.
[0056] Specifically, the first adjustment component includes a first suspension rope 41 and a first drive component. The upper end face of the anti-sway fin structure box 20 is provided with multiple lifting points at intervals. The first suspension rope 41 is set one-to-one with the lifting points. One end of the first suspension rope 41 is fixed to the anti-sway fin structure box 20 at the lifting point position, and the other end is fixed to the output end of the first drive component. The first drive component drives the anti-sway fin structure box 20 to reciprocate in the vertical direction through the first suspension rope 41.
[0057] Specifically, multiple lifting points are distributed circumferentially on the upper surface of the anti-roll fin structure box 20. This arrangement allows the force on the anti-roll fin structure box 20 to be distributed, avoiding localized stress and damage, and the circumferentially distributed fixing points can also maintain the stability of the anti-roll fin structure box 20 when it is suspended.
[0058] Specifically, the second adjustment component includes a second lifting rope 51 and a second driving member. The end face of the anti-roll fin structure box 20 facing the hull 10 is provided with multiple towing points. The second lifting rope 51 corresponds to each towing point. One end of the second lifting rope 51 is fixed to the anti-roll fin structure box 20 at the towing point, and the other end is fixed to the second driving member. The second driving member drives the anti-roll fin structure box 20 to move along the side of the hull 10 through the second lifting rope 51.
[0059] Specifically, multiple drag points are spaced apart along the length of the anti-roll fin structure box 20. This arrangement allows the force on the anti-roll fin structure box 20 to be distributed, avoiding localized stress and damage.
[0060] Specifically, the anti-roll fin structure box 20 is angled at 15° with the baseline 16 and is vertically aligned with the upper position of the rotation axis of the anti-roll fin 21 and the lower position of the free end of the anti-roll fin 21.
[0061] Specifically, the anti-roll fin structure box 20 includes a box body 22 and an anti-roll fin 21. The box body 22 has an installation cavity. One end of the anti-roll fin 21 is rotatably connected to the box body 22 in the installation cavity. The axial direction of the rotation axis intersects with the groove depth direction of the installation cavity. The other end of the anti-roll fin 21 can selectively enter and exit the installation cavity. When the anti-roll fin 21 is in the retracted state, it fits against the box body 22 along its length in the installation cavity. When it is in the extended state, the anti-roll fin 21 rotates around its axis, and part of the anti-roll fin 21 swings out of the installation cavity and extends along the width direction of the ship.
[0062] Specifically, the length direction of the anti-roll fin 21 is parallel to the length direction of the housing 22. This arrangement allows the anti-roll fin 21 to be simulated by rotating the anti-roll fin structure housing 20 during the installation and commissioning phase, without having to unfold it. The installation angle can be adjusted by simply rotating the anti-roll fin structure housing 20 to match the unfolded posture of the anti-roll fin 21 and the mounting holes of the hull 10.
[0063] Specifically, multiple reinforcing members are provided inside the hull 10 along its bow and stern direction. A fixing groove 151 is provided in the middle of the reinforcing member 15, and the anti-roll fin structure box 20 is inserted into the fixing groove 151 along the groove depth direction.
[0064] Specifically, a third driving component is provided inside the hull 10. The output end of the third driving component is connected to the rotation shaft of the anti-roll fin 21 for driving the anti-roll fin 21 to rotate around the rotation shaft. Furthermore, the above is only a preferred embodiment of the present invention and the technical principles employed.
[0065] Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and 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 more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims
1. A method for welding a roll-damping fin structure box (20) to a ship hull (10), characterized in that, The assembly and welding steps are as follows: S1. An installation hole is provided on the outer side wall of the hull (10), and the opening size of the installation hole is larger than the circumferential size of the anti-roll fin structure box (20); S2. The anti-roll fin structure box (20) is pulled up vertically by the first adjustment component so that the anti-roll fin structure box (20) and the mounting hole are on the same horizontal plane. Then the anti-roll fin structure box (20) is moved toward the side where the hull (10) is located by the second adjustment component. S3. The hull (10) is marked with a baseline (16) in the bow-stern direction. The anti-roll fin structure box (20) is rotated instead of the anti-roll fin (21) to extend it in the width direction of the ship. The clamping angle between the anti-roll fin structure box (20) and the baseline (16) is adjusted so that the anti-roll fin structure box (20) can be filled into the mounting hole. S4. The bottom of the anti-roll fin structure box (20) is spot welded to the lower edge line of the mounting hole to form the first weld (11); S5. According to the gap size between the anti-roll fin structure box (20) and the mounting hole, cut the corresponding size adjustment plate (30), spot weld the adjustment plate (30) to the hull (10) to form the second weld (12), and spot weld the adjustment plate (30) to the anti-roll fin structure box (20) to form the third weld (31). S6. The anti-roll fin structure box (20) is spot welded to the hull (10) at both ends in the bow and stern directions to form the fourth weld (13) and the fifth weld (14); S7. The first weld (11), the second weld (12), the third weld (31), the fourth weld (13) and the fifth weld (14) are continuously welded respectively.
2. The method for assembling and welding the anti-roll fin structure according to claim 1, characterized in that, The first adjustment component includes a first suspension rope (41) and a first drive member. The upper surface of the anti-sway fin structure box (20) is provided with a plurality of lifting points at intervals. The first suspension rope (41) is provided in a one-to-one correspondence with the lifting points. One end of the first suspension rope (41) is fixed to the anti-sway fin structure box (20) at the lifting point position, and the other end is fixed to the output end of the first drive member. The first drive member drives the anti-sway fin structure box (20) to reciprocate in the vertical direction through the first suspension rope (41).
3. The method for assembling and welding the anti-sway fin structure according to claim 2, characterized in that, On the upper end face of the anti-roll fin structure box (20), a plurality of lifting points are distributed along its circumference.
4. The method for assembling and welding the anti-sway fin structure according to claim 3, characterized in that, The second adjustment component includes a second sling (51) and a second drive member. The end face of the anti-roll fin structure box (20) facing the hull (10) is provided with multiple towing points. The second sling (51) corresponds to each towing point. One end of the second sling (51) is fixed to the anti-roll fin structure box (20) at the towing point, and the other end is fixed to the second drive member. The second drive member drives the anti-roll fin structure box (20) to move along the side of the hull (10) through the second sling (51).
5. The method for assembling and welding the anti-sway fin structure according to claim 4, characterized in that, In the anti-roll fin structure box (20), a plurality of drag points are arranged at intervals along the length direction of the anti-roll fin structure box (20).
6. The method for assembling and welding the anti-roll fin structure according to claim 1, characterized in that, The anti-roll fin structure box (20) includes a box body (22) and an anti-roll fin (21). The box body (22) has an installation cavity. One end of the anti-roll fin (21) is rotatably connected to the box body (22) in the installation cavity. The axial direction of the rotation axis intersects with the groove depth direction of the installation cavity. The other end of the anti-roll fin (21) can selectively enter and exit the installation cavity.
7. The method for assembling and welding the anti-sway fin structure according to claim 6, characterized in that, The anti-roll fin structure box (20) is angled at 15° with the baseline (16) and is in the vertical direction. The rotation axis of the anti-roll fin (21) is located in the upper position, and the free end of the anti-roll fin (21) is located in the lower position.
8. The method for assembling and welding the anti-slip fin structure according to claim 7, characterized in that, The length direction of the anti-roll fin (21) is parallel to the length direction of the housing (22).
9. The method for assembling and welding the anti-sway fin structure according to any one of claims 1-8, characterized in that, Multiple reinforcing members (15) are provided inside the hull (10) along its bow-stern direction. A fixing groove (151) is provided in the middle of the reinforcing member (15). The anti-roll fin structure box (20) is inserted into the fixing groove (151) along the groove depth direction.
10. The method for assembling and welding the anti-roll fin structure according to claim 8, characterized in that, A third driving component is provided inside the hull (10). The output end of the third driving component is connected to the rotation shaft of the anti-roll fin (21) for driving the anti-roll fin (21) to rotate around the rotation shaft.