A rollover limit system for hull floating installation

Abstract

The invention relates to the technical field of hull floating installation, and proposes a rollover limit system for hull floating installation, comprising a ship limit box, a hollow limit blind pipe, a rollover limit block, a rollover power component with a self-locking function, a secondary limit component and a tertiary limit component. The ship limit box is arranged on one side of the ship body, a limit frame is arranged in the ship limit box, a side of the ship limit box away from the ship body is flush with a side of the ship body, a limit groove is arranged on the side of the ship limit box away from the ship body, a hollow limit blind pipe penetrates the limit groove and is sealed and rotatably arranged on the ship limit box, a rollover limit block is arranged on the hollow limit blind pipe, the rollover limit block is matched with the limit groove, and a convex limit groove is arranged on the side of the rollover limit block close to the bow. Through the above technical scheme, the problem of time-consuming and labor-intensive installation in the prior art when docking and installing the hull floating is solved.

Description

Technical Field

[0001] The invention relates to the technical field of hull floating installation, and in particular to a rollover limiting system for hull floating installation. Background Art

[0002] Hull floatation is a special installation technology used in the field of marine engineering and shipbuilding. It is mainly used to connect and install large structures (such as upper modules of offshore platforms, large hull sections, etc.) with basic structures. The installation principle is mostly to use the buoyancy of the ship and special operating techniques to transport large structures originally built on land to designated sea areas, and to dock and install them with offshore basic structures (such as the lower buoy of semi-submersible platforms, submarine jackets, etc.). During this docking process, the installation ship adjusts its own ballast water and changes its draft, thereby achieving the bearing and positioning of the large structure, and finally completing the precise connection with the basic structure.

[0003] Among them, during the docking stage, in order to ensure that the ship can be stably maintained in the basic structure on the sea surface, it is necessary to position the ship carrying large structures. The commonly used ship positioning method in the prior art is generally to set a limit system on both sides of the ship. Through the continuous braking of the ship on the sea surface, the contact between the limit systems on both sides of the ship and the offshore basic structure can achieve the stability of the ship's position. The limit systems in the prior art are mostly directly welded to the two sides of the ship. Although the structure is stronger and the pressure it withstands is greater, the disadvantage is that the ship cannot directly pass through the basic structure frame on the sea surface. This has the following disadvantages. For example, when a ship carrying multiple large structures is docked and installed at multiple points, the large structure carried by the stern of the ship cannot be installed first. The large structures can only be docked from the bow to the stern in sequence. After the docking is completed, the ship can only evacuate by reversing the ship, which is time-consuming and labor-intensive.

[0004] In order to facilitate the rapid installation and positioning of the hull float on the sea surface, we proposed a rollover limit system for the hull float installation. Summary of the invention

[0005] The present invention provides a rollover limit system for hull floating installation, which is used to solve the problem mentioned in the background technology that the installation is time-consuming and labor-intensive when the hull floating is docked and installed in the prior art.

[0006] The technical solution of the present invention is as follows: a rollover limit system for hull floating installation, suitable for installation on both sides of the ship body, including a ship limit box, a hollow limit blind pipe, a rollover limit block, a rollover power assembly with a self-locking function, a secondary limit assembly and a tertiary limit assembly;

[0007] The ship limit box is arranged on one side of the ship body, a limit frame is arranged in the ship limit box, a side of the ship limit box away from the ship body is flush with a side of the ship body, and a limit groove is arranged on the side of the ship limit box away from the ship body;

[0008] The hollow limiting blind tube passes through the limiting groove and is sealed and rotatably arranged on the ship limiting box;

[0009] The flip limit block is arranged on the hollow limit blind pipe, the flip limit block is matched with the limit groove, a convex limit groove is provided on a side of the flip limit block close to the bow, and a wear-resistant contact component is arranged in the convex limit groove for contacting with the offshore basic structure frame;

[0010] The flip power assembly is arranged on the limit frame, and the flip power assembly is connected to one end of the hollow limit blind tube, and is used to drive the hollow limit blind tube to move;

[0011] The secondary limit assembly is arranged on the ship limit box, and the secondary limit assembly is connected to the flip power assembly, and is used to provide strength support for the flip limit block;

[0012] The three-time limit assembly is arranged in the ship limit box, and the three-time limit assembly is sealed and rotationally contacted with the other end of the hollow limit blind pipe, so as to provide strength support for the flip limit block again.

[0013] On the basis of the above scheme, the wear-resistant contact assembly includes a wear-resistant slider and a contact return spring;

[0014] The wear-resistant sliding block is sealed and slidably disposed in the convex limiting groove;

[0015] The contact return spring is arranged in the convex limiting groove, and one end of the contact return spring is connected to one end of the wear-resistant sliding block.

[0016] As a preferred technical solution of the present application, the flip power assembly includes a power rotating rod, a bevel gear 1, a bevel gear 2 and a power part with a self-locking function;

[0017] The power rotating rod is rotatably arranged in the ship limit box;

[0018] The bevel gear 1 is arranged on the power rotating rod;

[0019] The second bevel gear is arranged at one end of the hollow limiting blind tube, and the second bevel gear is meshed with the first bevel gear;

[0020] The power unit is arranged on the limiting frame, and the power unit is connected to the power rotating rod.

[0021] Further on the basis of the above scheme, the power unit includes a power motor, a power worm and a power worm wheel;

[0022] The power motor is installed on the limiting frame;

[0023] One end of the power worm is arranged on the output end of the power motor, and the other end of the power worm is rotatably arranged in the ship limit box;

[0024] The power worm gear is arranged on the power rotating rod, and the power worm gear is meshed with the power worm.

[0025] As a preferred technical solution of the present application, the secondary limiting assembly includes a secondary limiting frame and a secondary arc limiting rod;

[0026] The secondary limit frame is arranged on the power rotating rod;

[0027] The secondary arc-shaped limiting rod penetrates and is sealingly and slidably arranged on the ship limiting box, and the secondary arc-shaped limiting rod is connected to the secondary limiting frame.

[0028] Further on the basis of the above scheme, the center point of the secondary arc limit rod coincides with the center point of the power rotating rod.

[0029] Further on the basis of the above solution, the secondary arc limiting rod is further provided with an arc limiting portion for fixing the position of the secondary arc limiting rod;

[0030] Wherein, the arc-shaped limiting part includes a limiting cylinder, a limiting plug rod and a limiting plug block;

[0031] The limit cylinder is installed on the limit frame;

[0032] The limiting rod is arranged on the output end of the limiting cylinder;

[0033] The limiting plug block is arranged on the secondary arc limiting rod, and a limiting hole matching with the limiting plug rod is formed on the limiting plug block.

[0034] As a preferred technical solution of the present application, the three-position limiting assembly includes a position limiting air supply pipe 1 and a pneumatic position limiting part;

[0035] The limiting air supply pipe 1 is arranged in the flip limiting block, one end of the limiting air supply pipe 1 is connected to the convex limiting groove, and the other end of the limiting air supply pipe 1 is connected to the hollow limiting blind pipe;

[0036] The pneumatic limiting part is arranged in the ship limiting box, and one end of the pneumatic limiting part is rotatably connected with one end of the hollow limiting blind pipe.

[0037] Further on the basis of the above scheme, the pneumatic limiting part includes an air delivery box, a pneumatic positioning group and a limiting air delivery pipe 2;

[0038] The gas delivery box is arranged in the ship limit box, and one end of the hollow limit blind pipe penetrates into the gas delivery box and is sealed and rotatably connected with the gas delivery box;

[0039] The pneumatic positioning group is penetrated and sealed on the ship limit box, and the pneumatic positioning group is located on a side of the flip limit block away from the wear-resistant contact component;

[0040] The second limiting air supply pipe is connected and arranged between the pneumatic positioning group and the air supply box.

[0041] Further on the basis of the above scheme, the pneumatic positioning group includes a pneumatic positioning cylinder and a pneumatic positioning rod;

[0042] The pneumatic positioning cylinder is penetrated and sealed on the ship limit box, and one end of the limit air delivery pipe 2 is connected to one end of the pneumatic positioning cylinder;

[0043] The pneumatic positioning rod penetrates and is sealingly slidably arranged on one end of the pneumatic positioning cylinder close to the flip limit block.

[0044] The working principle and beneficial effects of the present invention are:

[0045] 1. The present invention, when positioning the ship body carrying a large structure at the foundation structure on the sea surface, when the ship limit box on one side of the ship body is about to move to the positioning device in the foundation structure, the power motor is started, the output end of the power motor drives the power worm to rotate, the rotation of the power worm drives the power worm wheel to rotate, the rotation of the power worm wheel drives the power rotating rod to rotate, the rotation of the power rotating rod drives the bevel gear 1 to rotate, the rotation of the bevel gear 1 drives the bevel gear 2 to rotate, the rotation of the bevel gear 2 drives the hollow limit blind tube to rotate, and the rotation of the hollow limit blind tube drives the flip limit block to move, so that the flip limit block moves from the limit groove toward one side of the ship body;

[0046] 2. In the present invention, when the power rotating rod drives the flip limit block to move from the limit groove toward one side of the ship body, the power rotating rod drives the secondary limit frame to move at the same time, and the movement of the secondary limit frame drives the secondary arc limit rod to move. When the flip limit block moves to a specific position, one end of the secondary arc limit rod just contacts with the end of the flip limit block away from the wear-resistant contact component, and the flip limit block is supported in the lateral direction. After the secondary arc limit rod contacts the flip limit block, the limit plug block just moves to one end of the limit plug rod, and the limit cylinder is started at this time. The output end of the limit cylinder drives the limit plug rod to move, so that the limit plug rod is inserted into the corresponding limit hole. Through the cooperation of the limit plug rod and the limit plug block, the position of the secondary arc limit rod is fixed, and the structural strength of the secondary arc limit rod supporting the flip limit block is further improved.

[0047] 3. In the present invention, after the position of the flip limit block is flipped and reset, through the continuous movement of the ship body, when the wear-resistant slider contacts the basic structure on the sea surface, as the ship body moves, the wear-resistant slider is pressed to move toward the convex limit groove, and when the wear-resistant slider moves toward the convex limit groove, the contact reset spring is compressed and deformed, and at the same time, the gas in the convex limit groove enters the pneumatic positioning cylinder through the limit gas supply pipe 1, the hollow limit blind pipe, the gas supply box and the limit gas supply pipe 2, and when the air pressure in the pneumatic positioning cylinder increases, the pneumatic positioning rod moves toward one side of the flip limit block until the pneumatic positioning rod moves toward the side of the flip limit block. When one end of the pneumatic positioning rod is connected to one end of the flip limit block, the flip limit rod is once again supported in the lateral strength. As the extrusion force on the wear-resistant slider increases, the pressure of the pneumatic positioning cylinder increases, and the force of the pneumatic positioning rod supporting the flip limit block increases, which effectively prevents the flip limit block from deforming and bending due to excessive lateral force, resulting in the problem of being unable to reset normally. After the docking of the large structure is completed, the ship stops moving first, and under the rebound pressure of the contact reset spring, the wear-resistant slider slides in the convex limit groove, and the gas in the pneumatic positioning cylinder flows back to the convex limit groove, and the pneumatic positioning rod is separated from the flip limit block. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0049] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0050] Figure 2 It is a schematic diagram of the structure of a partial cross-section of the present invention;

[0051] Figure 3 It is a schematic diagram of the structure of the coordination of the limit frame, the hollow limit blind tube, the wear-resistant contact assembly, the flip power assembly, the secondary limit assembly and the tertiary limit assembly in the present invention;

[0052] Figure 4 For the present invention Figure 3 A schematic diagram of the partially enlarged structure at point A in the middle;

[0053] Figure 5 It is a schematic diagram of a partial cross-section of the structure of the turning limit block, the wear-resistant sliding block, the contact return spring and the limit air pipe in the present invention;

[0054] Figure 6 It is a structural schematic diagram of another state of the present invention as a whole;

[0055] Figure 7 The figure is a schematic diagram of the structure of the present invention arranged on a ship body.

[0056] In the figure: 001, wear-resistant contact assembly; 002, flip power assembly; 003, secondary limit assembly; 004, tertiary limit assembly;

[0057] 1. Ship limit box; 2. Limit frame; 3. Hollow limit blind pipe; 4. Flip limit block; 5. Wear-resistant slider; 6. Contact return spring; 7. Power rotating rod; 8. Bevel gear one; 9. Bevel gear two; 10. Power motor; 11. Power worm; 12. Power worm wheel; 13. Secondary limit frame; 14. Secondary arc limit rod; 15. Limit cylinder; 16. Limit plug rod; 17. Limit plug block; 18. Limit gas pipe one; 19. Gas box; 20. Limit gas pipe two; 21. Pneumatic positioning cylinder; 22. Pneumatic positioning rod. DETAILED DESCRIPTION

[0058] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] like Figures 1 to 7 As shown, this embodiment proposes a rollover limit system for hull floating installation, which is suitable for installation on both sides of the ship body, including a ship limit box 1, a hollow limit blind tube 3, a rollover limit block 4, a rollover power component 002 with a self-locking function, a secondary limit component 003 and a tertiary limit component 004.

[0060] As mentioned above, the ship limit box 1 is arranged on one side of the ship body, a limit frame 2 is arranged inside the ship limit box 1, a side of the ship limit box 1 away from the ship body is flush with a side of the ship body, and a limit groove is provided on the side of the ship limit box 1 away from the ship body.

[0061] As mentioned above, the hollow limiting blind tube 3 passes through the limiting groove and is sealed and rotatably arranged on the ship limiting box 1, the flip limiting block 4 is arranged on the hollow limiting blind tube 3, the flip limiting block 4 is adapted to the limiting groove, and a convex limiting groove is provided on the side of the flip limiting block 4 close to the bow, and a wear-resistant contact component 001 is arranged in the convex limiting groove for contacting with the offshore basic structure frame.

[0062] Among them, the wear-resistant contact component 001 includes a wear-resistant slider 5 and a contact reset spring 6. The wear-resistant slider 5 is sealed and slidably arranged in a convex limit groove. The contact reset spring 6 is arranged in the convex limit groove. One end of the contact reset spring 6 is connected to the end of the wear-resistant slider 5. The wear-resistant slider 5 moves and contacts with the basic structure on the sea surface. Under the power of the ship's continuous advancement, the ship is stably positioned.

[0063] As mentioned above, the flipping power component 002 is arranged on the limit frame 2, and the flipping power component 002 is connected to one end of the hollow limit blind tube 3, which is used to drive the hollow limit blind tube 3 to move. The flipping power component 002 includes a power rotating rod 7, a bevel gear 1 8, a bevel gear 2 9 and a power unit with a self-locking function. The power rotating rod 7 is rotatably arranged in the ship limit box 1, the bevel gear 1 8 is arranged on the power rotating rod 7, the bevel gear 2 9 is arranged at one end of the hollow limit blind tube 3, the bevel gear 2 9 is meshed with the bevel gear 1 8, the power unit is arranged on the limit frame 2, and the power unit is connected to the power rotating rod 7.

[0064] Among them, the power unit includes a power motor 10, a power worm 11 and a power worm wheel 12. The power motor 10 is installed on the limit frame 2. One end of the power worm 11 is set on the output end of the power motor 10. The other end of the power worm 11 is rotatably set in the ship limit box 1. The power worm wheel 12 is set on the power rotating rod 7, and the power worm wheel 12 is meshed with the power worm 11.

[0065] Specifically, when positioning the ship body carrying a large structure at the foundation structure on the sea surface, when the ship limit box 1 on one side of the ship body is about to move to the positioning device in the foundation structure, the power motor 10 is started, and the output end of the power motor 10 drives the power worm 11 to rotate, and the rotation of the power worm 11 drives the power worm gear 12 to rotate, and the rotation of the power worm gear 12 drives the power rotating rod 7 to rotate, and the rotation of the power rotating rod 7 drives the bevel gear 1 8 to rotate, and the rotation of the bevel gear 1 8 drives the bevel gear 2 9 to rotate, and the rotation of the bevel gear 2 9 drives the hollow limit blind tube 3 to rotate, and through the rotation of the hollow limit blind tube 3, the flip limit block 4 is driven to move, so that the flip limit block 4 moves from the limit groove toward one side of the ship body.

[0066] After the movement of the flip limit block 4 is completed, the meshing and self-locking of the power worm 11 and the power worm wheel 12 can effectively prevent the flip limit block 4 from angular deviation, thereby improving the position stability of the flip limit block 4.

[0067] As mentioned above, the secondary limit assembly 003 is arranged on the ship limit box 1, and the secondary limit assembly 003 is connected to the flip power assembly 002, and is used to provide strength support for the flip limit block 4. The secondary limit assembly 003 includes a secondary limit frame 13 and a secondary arc limit rod 14. The secondary limit frame 13 is arranged on the power rotating rod 7, and the secondary arc limit rod 14 penetrates and is sealed and slidably arranged on the ship limit box 1, and the secondary arc limit rod 14 is connected to the secondary limit frame 13.

[0068] The center point of the secondary arc-shaped limiting rod 14 coincides with the center point of the power rotating rod 7 .

[0069] Specifically, when the power rotating rod 7 drives the flip limit block 4 to move from the limit groove toward one side of the ship body, the power rotating rod 7 simultaneously drives the secondary limit frame 13 to move, and the movement of the secondary limit frame 13 drives the secondary arc limit rod 14 to move. When the flip limit block 4 moves to a specific position, one end of the secondary arc limit rod 14 just contacts the end of the flip limit block 4 away from the wear-resistant contact component 001, thereby supporting the flip limit block 4 in the lateral direction.

[0070] It is additionally explained that an arc-shaped limiting portion is further provided on the secondary arc-shaped limiting rod 14 for fixing the position of the secondary arc-shaped limiting rod 14 .

[0071] Among them, the arc-shaped limiting part includes a limiting cylinder 15, a limiting rod 16 and a limiting block 17. The limiting cylinder 15 is installed on the limiting frame 2, the limiting rod 16 is arranged on the output end of the limiting cylinder 15, and the limiting block 17 is arranged on the secondary arc-shaped limiting rod 14. The limiting block 17 is provided with a limiting hole matched with the limiting rod 16.

[0072] Specifically, after the secondary arc limit rod 14 contacts the flip limit block 4, the limit plug 17 just moves to one end of the limit plug 16. At this time, the limit cylinder 15 is started, and the output end of the limit cylinder 15 drives the limit plug 16 to move, so that the limit plug 16 is inserted into the corresponding limit hole. Through the cooperation between the limit plug 16 and the limit plug 17, the position of the secondary arc limit rod 14 is fixed, and the structural strength of the secondary arc limit rod 14 supporting the flip limit block 4 is further improved.

[0073] As mentioned above, the three-time limit assembly 004 is arranged in the ship limit box 1, and the three-time limit assembly 004 is sealed and rotationally contacted with the other end of the hollow limit blind tube 3, which is used to provide strength support for the flip limit block 4 again. The three-time limit assembly 004 includes a limit air pipe 18 and a pneumatic limit part. The limit air pipe 18 is arranged in the flip limit block 4, one end of the limit air pipe 18 is connected to the convex limit groove, and the other end of the limit air pipe 18 is connected to the hollow limit blind tube 3. The pneumatic limit part is arranged in the ship limit box 1, and one end of the pneumatic limit part is rotationally connected to one end of the hollow limit blind tube 3.

[0074] Among them, the pneumatic limiting part includes an air box 19, a pneumatic positioning group and a limiting air pipe 20. The air box 19 is arranged in the ship limit box 1. One end of the hollow limiting blind pipe 3 passes through the air box 19 and is sealed and rotatably connected with the air box 19. The pneumatic positioning group passes through and is sealed on the ship limit box 1. The pneumatic positioning group is located on the side of the flip limit block 4 away from the wear-resistant contact component 001. The limiting air pipe 20 is connected and arranged between the pneumatic positioning group and the air box 19.

[0075] Among them, the pneumatic positioning group includes a pneumatic positioning cylinder 21 and a pneumatic positioning rod 22. The pneumatic positioning cylinder 21 passes through and is sealed and set on the ship limit box 1. One end of the limit air supply pipe 20 is connected to one end of the pneumatic positioning cylinder 21. The pneumatic positioning rod 22 passes through and is sealed and slidably set on one end of the pneumatic positioning cylinder 21 near the flip limit block 4.

[0076] Specifically, after the position of the flip limit block 4 is flipped and reset, through the continuous movement of the ship body, when the wear-resistant slider 5 contacts the basic structure on the sea surface, as the ship body moves, the wear-resistant slider 5 is subjected to pressure to move toward the convex limit groove. When the wear-resistant slider 5 moves toward the convex limit groove, the contact reset spring 6 is compressed and deformed. At the same time, the gas in the convex limit groove enters the pneumatic positioning cylinder 21 through the limiting air supply pipe 18, the hollow limiting blind pipe 3, the air supply box 19 and the limiting air supply pipe 20. When the air pressure in the pneumatic positioning cylinder 21 increases, the pneumatic positioning rod 22 moves toward one side of the flip limit block 4 until one end of the pneumatic positioning rod 22 is connected to one end of the flip limit block 4, and the flip limit rod is again flipped. The lateral strength support is provided again. As the extrusion pressure on the wear-resistant slider 5 increases, the pressure of the pneumatic positioning cylinder 21 increases, and the force of the pneumatic positioning rod 22 supporting the flip limit block 4 increases, which effectively prevents the flip limit block 4 from being deformed and bent due to excessive lateral force, resulting in the problem of being unable to reset normally. After the docking with the large structure is completed, the ship stops moving forward first. Under the rebound pressure of the contact reset spring 6, the wear-resistant slider 5 slides in the convex limit groove, and the gas in the pneumatic positioning cylinder 21 flows back to the convex limit groove, the pneumatic positioning rod 22 separates from the flip limit block 4, and then through the sequential movement of the limit cylinder 15 and the power motor 10, the flip limit block 4 is moved to the limit groove again, so that the ship body can smoothly pass through the basic structure on the sea surface in a forward driving mode.

[0077] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rollover limit system for hull floating installation, suitable for installation on both sides of the ship body, characterized in that: include: A ship limit box (1), the ship limit box (1) being arranged on one side of a ship body, a limit frame (2) being arranged inside the ship limit box (1), a side of the ship limit box (1) away from the ship body being flush with a side of the ship body, and a limit groove being arranged on the side of the ship limit box (1) away from the ship body; A hollow position limiting blind tube (3), the hollow position limiting blind tube (3) passing through the position limiting groove and being sealed and rotatably arranged on the ship position limiting box (1); A rollover limit block (4), the rollover limit block (4) being arranged on the hollow limit blind tube (3), the rollover limit block (4) being adapted to the limit groove, a convex limit groove being provided on a side of the rollover limit block (4) close to the bow, a wear-resistant contact component (001) being provided in the convex limit groove for contacting with an offshore infrastructure frame; A flip power assembly (002) having a self-locking function, the flip power assembly (002) being arranged on the limiting frame (2), the flip power assembly (002) being connected to one end of the hollow limiting blind tube (3) and being used to drive the hollow limiting blind tube (3) to move; A secondary limit assembly (003), the secondary limit assembly (003) being arranged on the ship limit box (1), the secondary limit assembly (003) being connected to the overturning power assembly (002) and being used to provide strength support for the overturning limit block (4); A three-way limit assembly (004), the three-way limit assembly (004) being arranged in the ship limit box (1), and the three-way limit assembly (004) being sealed and in rotational contact with the other end of the hollow limit blind tube (3), for providing a second strength support to the flip limit block (4); The turning power assembly (002) comprises: A power rotating rod (7), the power rotating rod (7) being rotatably arranged in the ship limit box (1); Bevel gear one (8), the bevel gear one (8) being arranged on the power rotating rod (7); Bevel gear 2 (9), the bevel gear 2 (9) being arranged at one end of the hollow limiting blind tube (3), the bevel gear 2 (9) being meshed with the bevel gear 1 (8); A power unit having a self-locking function, the power unit being arranged on the limiting frame (2), and the power unit being connected to the power rotating rod (7); The secondary limiting component (003) comprises: A secondary limiting frame (13), wherein the secondary limiting frame (13) is arranged on the power rotating rod (7); A secondary arc-shaped limit rod (14), the secondary arc-shaped limit rod (14) penetrates through and is sealingly slidably arranged on the ship limit box (1), and the secondary arc-shaped limit rod (14) is connected to the secondary limit frame (13); The center point of the secondary arc-shaped limiting rod (14) coincides with the center point of the power rotating rod (7).

2. A rollover limiting system for hull floating installation according to claim 1, characterized in that: The wear-resistant contact component (001) comprises: A wear-resistant sliding block (5), the wear-resistant sliding block (5) being sealed and slidably disposed in the convex limiting groove; A contact return spring (6), wherein the contact return spring (6) is arranged in the convex limiting groove, and one end of the contact return spring (6) is connected to the end of the wear-resistant sliding block (5).

3. The overturning limiting system for hull floating installation according to claim 2 is characterized in that: The power unit comprises: A power motor (10), wherein the power motor (10) is mounted on the limiting frame (2); A power worm (11), one end of the power worm (11) being arranged on the output end of the power motor (10), and the other end of the power worm (11) being rotatably arranged in the ship limit box (1); A power worm gear (12), wherein the power worm gear (12) is arranged on the power rotating rod (7), and the power worm gear (12) is meshed with the power worm (11).

4. The overturning limiting system for hull floating installation according to claim 3 is characterized in that: The secondary arc-shaped limiting rod (14) is also provided with an arc-shaped limiting portion for fixing the position of the secondary arc-shaped limiting rod (14); Wherein, the arc-shaped limiting portion comprises: A limit cylinder (15), wherein the limit cylinder (15) is mounted on the limit frame (2); A limit rod (16), wherein the limit rod (16) is arranged on an output end of the limit cylinder (15); A limit plug block (17), wherein the limit plug block (17) is arranged on the secondary arc limit rod (14), and a limit hole matching the limit plug rod (16) is provided on the limit plug block (17).

5. The overturning limiting system for hull floating installation according to claim 4 is characterized in that: The three-position limiting component (004) comprises: A limiting gas supply pipe (18), wherein the limiting gas supply pipe (18) is arranged in the flip limiting block (4), one end of the limiting gas supply pipe (18) is connected to the convex limiting groove, and the other end of the limiting gas supply pipe (18) is connected to the hollow limiting blind pipe (3); A pneumatic limiting part, wherein the pneumatic limiting part is arranged in the ship limiting box (1), and one end of the pneumatic limiting part is rotatably connected to one end of the hollow limiting blind tube (3).

6. The overturning limiting system for floating installation of a hull according to claim 5, characterized in that: The pneumatic limiting part comprises: An air delivery box (19), the air delivery box (19) being arranged in the ship limit box (1), one end of the hollow limit blind pipe (3) passing through the air delivery box (19), and being sealed and rotatably connected to the air delivery box (19); A pneumatic positioning group, the pneumatic positioning group penetrates through and is sealed on the ship limit box (1), the pneumatic positioning group is located on a side of the flip limit block (4) away from the wear-resistant contact component (001); A second limiting air supply pipe (20), wherein the second limiting air supply pipe (20) is arranged in communication between the pneumatic positioning group and the air supply box (19).

7. The overturning limiting system for floating installation of a hull according to claim 6, characterized in that: The pneumatic positioning group comprises: A pneumatic positioning cylinder (21), the pneumatic positioning cylinder (21) passing through and being sealed on the ship limit box (1), one end of the limit air delivery pipe 2 (20) being in communication with one end of the pneumatic positioning cylinder (21); A pneumatic positioning rod (22), the pneumatic positioning rod (22) penetrates through and is sealingly slidably disposed at one end of the pneumatic positioning cylinder (21) close to the flip limit block (4).

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