High-performance leak stopper for production and manufacture of transport ships

Abstract

This invention discloses a high-performance leak-sealing device for the production and manufacturing of transport vessels, comprising: a leak-sealing plate, the edge of which is provided with a rubber sealing edge for sealing the hull breach; a threaded transmission assembly, comprising: an internally threaded tube rotatably connected to the leak-sealing plate; an externally threaded rod threadedly engaged with the internally threaded tube to form the actuator of the threaded transmission assembly, the end of which is provided with an anti-reverse limiting structure; a hexagonal rod fixed to a traction frame and extending into the hexagonal groove of the externally threaded rod to restrict the circumferential rotation of the externally threaded rod; a blind alignment guide assembly for enabling the device to slide down along the inner wall of the hull to complete the blind positioning and placement of the underwater breach, and to achieve controllable fixation with the hull; and an elastic feed assembly linked to the threaded transmission assembly for driving the actuator of the threaded transmission assembly to automatically penetrate the breach, reducing reliance on personnel experience and improving operational efficiency.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to a high-performance leak stopper for the production and manufacturing of transport ships. Background Technology

[0002] During their voyages at sea, transport vessels are prone to breaches in their hulls due to sudden events such as collisions, groundings, corrosion damage, and impacts from foreign objects. Seawater can then rapidly seep into the hull. If these breaches are not promptly and effectively sealed, they can cause increased draft, decreased stability, and in severe cases, even sinking, directly threatening the lives of the crew and the safety of the vessel and its cargo. Therefore, efficient and reliable leak-sealing devices are indispensable key equipment in a ship's emergency rescue system, and their performance directly determines the success or failure of emergency leak sealing.

[0003] In the manufacturing process of transport ships, leak-sealing devices are essential components, and they are evolving towards semi-automatic and precise positioning. Various leak-sealing devices designed to improve positioning convenience have emerged in the existing technology. For example, our company's authorized utility model patent, "A Marine Rapid Leak-Sealing Device" (Authorization Announcement No.: CN218317201U), discloses a leak-sealing structure including a leak-sealing plate, a guide assembly, and a transmission assembly. This device, by incorporating a guide component, assists the operator in sliding the device against the hull wall, aiming to solve, to some extent, the problems of inconvenient underwater leak positioning and laborious operation, thereby improving the relative convenience of leak-sealing operations.

[0004] However, the marine rapid leak-sealing device disclosed in patent CN218317201U cannot accurately target underwater breaches, especially in blind positioning scenarios where underwater visibility is obstructed and the environment is murky. This deficiency is even more pronounced, severely affecting leak-sealing efficiency. Therefore, this application provides a high-performance leak-sealing device for the production and manufacturing of transport vessels to meet the requirements. Summary of the Invention

[0005] The purpose of this application is to provide a high-performance leak plug for the production and manufacturing of transport ships, in order to solve the problem of low efficiency in existing technologies for plugging leaks caused by underwater breaches.

[0006] To achieve the above objectives, this application provides the following technical solution: a high-performance leak stopper for the production and manufacturing of transport ships, comprising:

[0007] A leak-stopping plate, wherein the edge of the leak-stopping plate is provided with a rubber sealing edge for sealing the hull breach;

[0008] The blind alignment guide assembly is used to enable the device to slide down the inner wall of the ship to complete the blind positioning and placement of the underwater breach, and can also achieve controllable fixation with the hull.

[0009] A threaded drive assembly, comprising an internally threaded tube, an externally threaded rod, and a hexagonal rod;

[0010] The internally threaded tube is rotatably connected to the sealing plate, and the externally threaded rod is threadedly engaged with the internally threaded tube to form the execution end of the threaded transmission assembly, the end of which is provided with an anti-reverse limiting structure.

[0011] The hexagonal rod is fixed to the traction frame and extends into the hexagonal groove of the external threaded rod to restrict the circumferential rotation of the external threaded rod;

[0012] An elastic feed assembly, linked with the threaded transmission assembly, is used to drive the actuator of the threaded transmission assembly to automatically pass through the tear.

[0013] The plugging plate, internally threaded pipe, externally threaded rod, and hexagonal rod are all made of non-magnetic high-strength austenitic stainless steel. By weight percentage, its chemical composition includes: C≤0.08%, Mn 7.0%~9.0%, Ni 8.0%~10.0%, Cr 18.0%~20.0%, Mo 2.0%~3.0%, N 0.20%~0.30%, with the balance being Fe and unavoidable impurities. The material has an austenitic single-phase structure, a relative magnetic permeability ≤1.01, and a yield strength ≥420MPa.

[0014] In a preferred embodiment of this invention, the blind alignment guide component includes:

[0015] The sliding frame has an internal rotating shaft;

[0016] The magnetic block and the magnetic shielding block are fixed to the outside of the rotating shaft. By rotating the rotating shaft, the orientation of the magnetic block is switched, so as to achieve controllable magnetic attraction fixation or magnetic shielding between the sliding frame and the hull.

[0017] The sliding seat is slidably engaged with the sliding frame;

[0018] A fixed bracket, fixedly connected to the sliding seat, is used to install the threaded transmission assembly and the elastic feed assembly;

[0019] The roller, rotatably connected to the end of the externally threaded rod via a fixed block, is used to roll along the inner wall of the ship to assist in sliding and positioning.

[0020] In a preferred embodiment of this invention, the elastic feed component includes:

[0021] The traction frame is rotatably connected to the internally threaded tube.

[0022] The second spring connects the traction frame and the fixed plate, and is initially in a compressed state.

[0023] The fixing plate is fixedly connected to the fixing frame through the connecting plate. When the roller rolls to the rupture position, the second spring restores its deformation and drives the external threaded rod to automatically extend into the rupture.

[0024] As a preferred embodiment of this invention, an automatic braking component is also included, which is linked with the elastic feeding component to restrict the device from continuing to slide down after it is aligned with the break, so as to avoid misalignment and scraping.

[0025] In a preferred embodiment of this invention, the automatic braking component includes:

[0026] The brake pad is located in the groove inside the sliding seat;

[0027] The connecting rod and push plate are connected to the brake pads in sequence;

[0028] The sliding rod, guide wheel, and inclined bar form a linkage structure;

[0029] The push rod is connected to the sliding rod and the traction frame at both ends. When the traction frame is fed forward, it drives the brake pad to clamp the sliding frame and stop the vehicle.

[0030] As a preferred embodiment of this invention, a pressure-relieving drive component is also included, which is linked with the automatic braking component and the threaded transmission component to release the rigid clamping of the automatic braking component and drive the threaded transmission component to complete the sealing plate clamping action.

[0031] In a preferred embodiment of this invention, the pressure-relieving drive component includes:

[0032] The remote transmission unit includes a bevel gear ring rotatably mounted on the fixed frame, a bevel gear meshing with the bevel gear ring, and a rotating rod fixedly connected to the bevel gear. The bevel gear ring is connected to the internal thread tube key of the threaded transmission assembly and is used to drive the internal thread tube to rotate above the water surface.

[0033] The brake release linkage unit includes a linkage protrusion fixed to the outside of the bevel gear ring and a release rod that cooperates with the linkage protrusion. The release rod is linked with the push plate of the automatic brake assembly. When the remote transmission unit drives the internal threaded tube to rotate, the linkage protrusion pushes the release rod to release the rigid clamping of the brake pad on the sliding frame.

[0034] As a preferred embodiment of this invention, the anti-reverse limiting structure includes:

[0035] An end block is fixed to the end of the externally threaded rod;

[0036] Multiple stop bars are hinged to the end block via right-angle stop grooves and can be extended to be perpendicular to the end block;

[0037] A tapered ring is slidably sleeved on the outside of the externally threaded rod, and a beveled surface is provided between it and the stop rod;

[0038] A first spring, connecting the conical ring and the plugging plate, is used to push the conical ring to open the stop bar;

[0039] A retaining ring is sleeved on the outside of the external threaded rod and is used to retract the retaining rod before it is inserted. The retaining ring is fixedly connected to the fixing frame through a sliding rod.

[0040] In a preferred embodiment of this invention, the retaining ring is provided with a sealing ring on the side near the plugging plate to seal the gap between the slide rod and the plugging plate; it also includes a limiting bolt, which is threaded to the connecting plate and cooperates with the internal threaded tube to position and lock the internal threaded tube in the non-working state.

[0041] In summary, the technical effects and advantages of this invention are as follows:

[0042] 1. This invention features a rational structure. A strong magnetic attraction is achieved between the magnetic block and the sliding frame on the outside of the breach, establishing a precise external spatial reference for the entire device. Subsequently, the rollers roll down along the hull wall, precisely sensing the breach edge at the moment of "miss," completing internal tactile positioning. Finally, the pre-compressed second spring releases instantaneously, driving the traction frame, internally threaded tube, and externally threaded rod to carry the anchoring structure through the breach at high speed and with precision. The entire positioning and penetration process requires no underwater visual observation or complex operations, reducing reliance on personnel experience and improving operational efficiency.

[0043] 2. Through the coordinated action of the stop bar, conical ring, first spring, and stop ring, the stop ring retracts the stop bar before the threaded rod passes through the breach, facilitating smooth passage. After passage, the stop bar disengages from the stop ring and is pushed open by the conical ring under the force of the first spring, perpendicularly abutting against the outside of the breach with the end block, achieving reliable axial limiting and preventing the threaded rod from retracting into the tank, thus solving the problem of inadequate anti-retraction limiting in existing equipment. Simultaneously, the overall structure of the device is rationally designed, with smooth linkage between components. Limit bolts are provided for positioning and locking in non-working states, facilitating storage and transportation. The remote transmission unit, through the insertion and engagement of a hexagonal shaft and hexagonal slot and magnetic attraction for positioning, allows for remote operation by personnel above the water surface, eliminating the need for underwater work and further improving operational convenience and safety. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of the structure of the present invention;

[0046] Figure 2 For the present invention Figure 1 A schematic diagram of the structure of part A;

[0047] Figure 3 For the present invention Figure 1 A schematic diagram of the structure of section B;

[0048] Figure 4 This is a structural schematic diagram from another perspective of the present invention;

[0049] Figure 5 For the present invention Figure 4 A schematic diagram of the C-section structure;

[0050] Figure 6 This is a partial structural cross-sectional view of the present invention;

[0051] Figure 7 For the present invention Figure 6 A schematic diagram of the structure of part D;

[0052] Figure 8 For the present invention Figure 6 A schematic diagram of the structure of part E;

[0053] Figure 9 This is a partial structural diagram of the present invention.

[0054] In the diagram: 1. Leak-stopping plate; 2. Internally threaded pipe; 3. Externally threaded rod; 4. End block; 5. Right-angle retaining groove; 6. Retaining rod; 7. First spring; 8. Conical ring; 9. Inclined surface; 10. Rubber sealing edge; 11. Fixing frame; 12. Sliding seat; 13. Sliding frame; 14. Magnetic shielding block; 15. Magnetic block; 16. Rotating shaft; 17. Guide rod; 18. Traction frame; 19. Second spring; 20. Fixing block; 21. Roller; 22. Retaining ring; 23. Sealing ring; 24. Sliding rod; 25. Fixing 26. Plate; 27. Connecting plate; 28. Bevel gear ring; 29. ​​Keyway; 30. Key block; 31. Bevel gear; 32. Rotating rod; 33. Hexagonal slot; 34. Hexagonal shaft; 35. Magnet; 36. Hexagonal rod; 37. Hexagonal slot; 38. Push rod; 39. Guide post; 40. Groove; 41. Brake pad; 42. Connecting rod; 43. Push plate; 44. Sliding rod; 45. Guide wheel; 46. Diagonal bar; 47. Positioning plate; 48. Positioning post; 49. Internal hexagonal sleeve; 50. Limit bolt. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] Example: Reference Figure 1-3 The invention relates to a high-performance leak plug for the production and manufacturing of transport ships. The leak plug mainly includes a threaded drive assembly, an anti-backward limit structure, a blind alignment guide assembly, an elastic feed assembly, an automatic braking assembly, and a pressure-relieving drive assembly.

[0057] The threaded drive assembly and anti-reverse limiting structure are the core power and actuators for achieving the final sealing function. It includes a sealing plate 1 and a rubber sealing edge 10. The sealing plate 1 has an umbrella-shaped or disc-shaped structure with a central opening, and its edges are fitted or vulcanized with rubber sealing edges 10. The rubber sealing edge 10 is preferably made of oil-resistant and seawater-resistant nitrile rubber or fluororubber, and its cross-section can be designed as a lip-shaped or hollow structure to enhance contact deformation and sealing effect. An internally threaded tube 2 is rotatably connected to the central hole of the sealing plate 1 via a bearing. One end of an externally threaded rod 3 passes through the central hole of the sealing plate 1, forming a precision-fitting drive thread pair with the internally threaded tube 2. The rotation of the internally threaded tube 2 can be converted into linear motion of the externally threaded rod 3 relative to the sealing plate 1.

[0058] refer to Figure 8The retraction limiting structure is crucial for ensuring the device is reliably anchored outside the hull and withstands water pressure without being pushed out. It includes an end block 4 fixed to the end of the externally threaded rod 3 extending outwards from the hull. There are 4-6 stop bars 6, hinged by pins to right-angled grooves 5 on the side of the end block 4, which can rotate within a 0-90 degree range around the pins. When retracted, each stop bar 6 is flush against the axis of the externally threaded rod 3; when extended, it is perpendicular to the end block 4, forming a "barb". A conical ring 8 is slidably fitted onto the externally threaded rod 3, located between the sealing plate 1 and the stop bars 6. The side of the conical ring 8 facing the stop bars 6 has a bevel 9, which mates with the corresponding bevel at the root of the stop bars 6. A first spring 7 acts on the sealing plate 1 at one end and on the conical ring 8 at the other, consistently providing a force pushing the conical ring 8 towards the stop bars 6.

[0059] Before passing through the breach, a structure is needed to constrain the retaining rod 6, keeping it in a retracted state to facilitate its passage. A retaining ring 22 is fitted onto the externally threaded rod 3, its inner diameter slightly larger than the outer contour of the retracted retaining rod 6. Multiple sliding rods 24 are fixed at one end to the retaining ring 22, and at the other end slide through the sealing plate 1 and are fixed to the subsequent fixing bracket 11. Therefore, the retaining ring 22 remains stationary relative to the hull during the passage process, while the externally threaded rod 3 and the retaining rod 6 move inward relative to it. When the retaining rod 6 is completely removed from the constraint range of the retaining ring 22, the first spring 7 immediately pushes the conical ring 8 forward, forcibly opening each retaining rod 6 to a vertically extended position through the engagement of the inclined plane 9. At this point, the end of the retaining rod 6 abuts against the vertical surface of the right-angle retaining groove 5, preventing further rotation and forming a secure mechanical limit.

[0060] To prevent the external threaded rod 3 from spinning freely when the internally threaded tube 2 is driven to rotate, a hexagonal anti-rotation structure is provided. The hexagonal rod 35 is fixed to the traction frame 18 and inserted into the hexagonal groove 36 opened at the end of the external threaded rod 3. The sliding spline engagement between the hexagonal rod 35 and the hexagonal groove 36 allows the external threaded rod 3 to move axially, but strictly restricts its circumferential rotation.

[0061] refer to Figure 6-8 The blind alignment guide assembly addresses the challenge of accurately guiding a device to an underwater breach in a "blind" environment. It comprises a sliding frame 13 and a magnetic control unit. The sliding frame 13 is a frame structure with a rotating shaft 16 mounted internally via bearings. A magnetic block 15 and a magnetic shielding block 14 are fixed to the rotating shaft 16. In the initial state or during transport, rotating the rotating shaft 16 aligns the magnetic shielding block 14 with the hull, shielding it from the magnetic field and facilitating safe transport and approach. In use, a long-handled tool is used to rotate the rotating shaft 16 180 degrees outside the breach, aligning the magnetic block 15 with the hull plate. Under the strong magnetic force, the sliding frame 13 is firmly attracted and fixed to the hull outside the breach, providing a precise initial external positioning reference for the entire device.

[0062] The mounting frame 11 is a main mounting frame with sliding seats 12 fixed on both sides. The sliding seats 12 have guide grooves on their inner sides, allowing them to slide smoothly into the shape of the sliding frame 13. Therefore, the mounting frame 11 and all its components can slide vertically up and down along the sliding frame 13. Rollers 21 are rotatably connected to the end block 4 via a fixing block 20. During the lowering process, the two rollers 21 roll against the hull wall under gravity, serving as tactile detectors and guides. Their core function is to "sensor" the continuity of the hull wall.

[0063] refer to Figure 4-8 The elastic feed assembly enables the automatic and rapid insertion action of the core actuator of the plugging device. It includes a traction frame 18 and a second spring 19. The traction frame 18 is rotatably connected to the top of the internally threaded tube 2 via a bearing. The upper end of the second spring 19 is connected to the fixed plate 25, and the lower end is connected to the traction frame 18. The fixed plate 25 is fixed to the top of the fixed frame 11 via a connecting plate 26. In the initial preparation state, the limiting bolt 50 is screwed into the connecting plate 26 and tightened against the internally threaded tube 2, locking the entire internally threaded tube 2, externally threaded rod 3, and traction frame 18 system relative to the fixed frame 11. At this time, the second spring 19 is in a compressed, energy-storing state.

[0064] refer to Figure 5 The automatic braking component is used to prevent the device from continuing to slide down due to inertia or gravity after the punching action is completed, causing the anchoring structure to scrape or misalign with the edge of the punch. Its core is a lever braking system linked to the elastic feed component. It mainly includes a brake pad 40 located in the inner groove 39 of the sliding seat 12. The brake pad 40 is connected to the outer push plate 42 via a connecting rod 41. One end of the push rod 37 is hinged to the traction frame 18, and the other end is hinged to the sliding rod 43. A rotatable guide wheel 44 is mounted on the sliding rod 43, and the guide wheel 44 contacts the inclined surface of the diagonal strip 46 fixed on the push plate 42.

[0065] When the traction frame 18, driven by the second spring 19, moves the internally threaded tube 2 and the externally threaded rod 3 rapidly toward the breach, the push rod 37 is pulled synchronously. The push rod 37 pulls the sliding rod 43 and the guide wheel 44 to move. The guide wheel 44 rolls along the inclined surface of the inclined bar 46, generating a lateral force that pushes the push plate 42 and the connecting rod 41, ultimately pushing the brake pad 40 out of the groove 39 and pressing it tightly against the guide surface of the sliding frame 13, generating huge frictional resistance. This action occurs precisely at the instant that the stop rod 6 has just unfolded and completed its anchoring, instantly "locking" the sliding of the fixed frame 11 relative to the sliding frame 13, causing the entire device to be suspended and positioned.

[0066] refer to Figure 6-7The pressure-relief drive assembly, in conjunction with the automatic brake assembly and the threaded transmission assembly, releases the rigid clamping of the automatic brake assembly when the sealing plate is tightened, ensuring smooth threaded transmission and achieving the tightening action. The pressure-relief drive assembly specifically includes a remote transmission unit and a brake release linkage unit. The remote transmission unit allows the operator to drive the threaded transmission assembly to rotate from above the water surface, completing the remote tightening operation.

[0067] The remote transmission unit includes a bevel gear ring 27, a bevel gear 30, and a rotating rod 31. The bevel gear ring 27 is rotatably mounted on the fixed frame 11 via bearings. The bevel gear 30 meshes with the bevel gear ring 27. The rotating rod 31 is fixedly connected to the bevel gear 30 and extends upward, facilitating operation above the water surface.

[0068] The bevel ring 27 and the internal threaded tube 2 of the threaded transmission assembly are connected by a key. Specifically, multiple key blocks 29 are fixedly arranged on the inner side of the bevel ring 27, and a keyway 28 matching the key blocks 29 is opened on the outer side of the internal threaded tube 2. The key blocks 29 are embedded in the keyway 28 to form a circumferential limit.

[0069] When the bevel ring 27 is driven to rotate, it can drive the internal threaded tube 2 to rotate synchronously through the cooperation of the key block and the keyway. At the same time, it allows the internal threaded tube 2 to slide axially relative to the bevel ring 27 without affecting the axial feeding action of the elastic feed assembly, thereby realizing the function of remotely driving the internal threaded tube 2 to rotate above the water surface.

[0070] To further facilitate remote operation, a hexagonal slot 32 is provided inside the rotating rod 31. A magnet 34 is fixedly installed at the bottom of the hexagonal slot 32 for magnetic positioning and insertion with the external hexagonal shaft 33. The operator can hold the hexagonal shaft 33 and insert it into the hexagonal slot 32, and rotate the rotating rod 31 above the water surface, thereby driving the bevel gear 30, bevel gear ring 27 and internal threaded tube 2 to rotate in sequence.

[0071] Simultaneously, a positioning guide is provided, which includes a positioning post 48, a positioning plate 47, and an internal hexagonal sleeve 49. The positioning post 48 is inserted into the top of the sliding frame 13, the positioning plate 47 is fixed on the positioning post 48, and the internal hexagonal sleeve 49 is rotatably disposed in the positioning plate 47 and sleeved on the outside of the hexagonal shaft 33, which is used to guide and support the hexagonal shaft 33 to ensure that the remote rotation process is stable and reliable.

[0072] The brake release linkage unit is linked with the remote transmission unit and the automatic brake stop component. It is used to simultaneously release the rigid clamping of the brake pad 40 on the sliding frame 13 while the remote transmission unit drives the internal thread tube 2 to rotate, so as to avoid the thread transmission being blocked due to brake lock-up.

[0073] refer to Figure 5-8The brake release linkage unit includes a linkage protrusion and a release rod. The linkage protrusion is fixedly mounted on the outer wall of the bevel gear ring 27 and rotates synchronously with the bevel gear ring 27. One end of the release rod is movably engaged with the linkage protrusion, and the other end is hinged to the push plate 42 of the automatic brake stop assembly.

[0074] When the operator drives the rotating rod 31, bevel gear 30 and bevel gear ring 27 to rotate via the hexagonal shaft 33, the linkage protrusion rotates together with the bevel gear ring 27 and pushes the release rod in the circumferential direction, causing the release rod to displace outward; the release rod then pulls the push plate 42 to move away from the sliding frame 13 along the guide post 38, and drives the brake pad 40 to move away from the sliding frame 13 in sync via the connecting rod 41, thereby releasing the clamping and rigid holding of the brake pad 40 on the sliding frame 13.

[0075] Therefore, once remote driving and clamping begins, the brake is automatically released, allowing the internal threaded tube 2 to rotate smoothly and drive the external threaded rod 3 to feed axially, pushing the plugging plate 1 to press against the hull breach, ensuring continuous and reliable sealing action.

[0076] When the operator begins to rotate the hexagonal shaft 33 above the water surface in an attempt to drive the internally threaded pipe 2, the initial resistance is extremely high due to the large static friction of the brake pad 40. However, at this moment, the hexagonal shaft 33 exhibits an upward axial displacement tendency relative to the non-rotating internal hexagonal sleeve 49. This upward force is entirely transmitted to the sliding frame 13 through the positioning plate 47 and the positioning pin 48. Since the sliding frame 13 is firmly attached to the hull by magnetic force, this reaction force is effectively equivalent to giving the fixed frame 11 a downward, brief impact force. This impact force is sufficient to instantly overcome the static friction of the brake pad 40, causing the fixed frame 11 to experience a slight, downward "loosening." Once the relative static state between the brake pad 40 and the sliding frame 13 is broken, and sliding friction is introduced, the resistance decreases sharply.

[0077] Simultaneously, this slight downward movement causes the linkage mechanism, such as push rod 37, to loosen slightly. Under the action of the return spring or structural gap, brake pad 40 slightly retracts, reducing pressure. At this point, the braking force is "released," and the resistance to rotating the hexagonal shaft 33 returns to normal, allowing smooth rotation of the internal threaded pipe 2. This, in turn, pulls the plugging plate 1 against the hull wall via the threaded joint, completing the final seal. During sealing, the sealing ring 23 on the retaining ring 22 presses tightly against the back of the plugging plate 1, preventing water from seeping in through the sliding gap of the slide rod 24.

[0078] To ensure long-term reliable operation in seawater environments and to avoid interference with magnetic positioning, the sealing plate 1, internally threaded pipe 2, externally threaded rod 3, and hexagonal rod 35 are all preferably made of high-performance austenitic stainless steel. Its chemical composition by weight percentage is: C≤0.08%, Mn 7.0%~9.0%, Ni 8.0%~10.0%, Cr 18.0%~20.0%, Mo 2.0%~3.0%, N 0.20%~0.30%, with the balance being Fe and unavoidable impurities. This composition design ensures a single austenitic microstructure, a relative permeability ≤1.01, and almost no magnetism, thus not affecting the operation of the magnetic block 15. Simultaneously, its yield strength ≥420MPa and elongation ≥30% exhibit excellent strength and plasticity matching, enabling it to withstand water pressure and installation stress. In seawater environments, its uniform corrosion rate is ≤0.1mm / a, exhibiting excellent corrosion resistance. This ensures that even if the plug is not removed immediately after emergency use, it will not rapidly corrode and fail.

[0079] Among them, carbon (C) ≤ 0.08% is strictly controlled within a low content range to effectively prevent carbide precipitation at grain boundaries, prevent intergranular corrosion, and avoid the adverse effects of carbon on the material's magnetism; manganese (Mn) 7.0%–9.0% is an austenite-forming element that works synergistically with nickel to stabilize the austenitic structure of the material, while improving its processing performance and strength; nickel (Ni) 8.0%–10.0% is the core austenite-forming element, ensuring that the material maintains a single austenitic structure under both room temperature and low-temperature underwater environments, fundamentally inhibiting the formation of magnetic phases such as ferrite, and providing a guarantee for the material's non-magnetic properties; chromium (Cr) 18.0%–20.0% is a key element for improving the material's corrosion resistance, forming a dense and stable chromium oxide passivation film on the material surface, effectively blocking the intrusion of corrosive media such as seawater and salt, and slowing down the corrosion process; molybdenum (Mo)... The addition of 2.0% to 3.0% can further enhance the stability of the passivation film, significantly improve the material's resistance to pitting and crevice corrosion in chloride ion environments such as seawater, and avoid the decrease in material strength due to localized corrosion; nitrogen element N 0.20% to 0.30% as an auxiliary austenite forming element can replace part of the nickel element, reduce the material cost, further improve the material's strength and corrosion resistance, and will not have a negative impact on the material's non-magnetic properties.

[0080] The microstructure of the plugging plate 1 is ensured to be a single-phase austenitic structure with no magnetic phase precipitation. Its relative magnetic permeability is ≤1.01, making it almost non-magnetic. This effectively avoids magnetic interference and magnetic field deviation with the magnetic block 15 in the blind alignment guide assembly, ensuring that the magnetic block 15 can stably perform its magnetic guidance function. This guarantees the blind positioning accuracy of the device underwater and avoids positioning deviations and device displacement caused by magnetic interference from the material. Simultaneously, this high-performance austenitic stainless steel possesses excellent mechanical properties, with a yield strength ≥420MPa and elongation ≥30%. It exhibits excellent strength and plasticity matching characteristics, capable of withstanding the impact force and water pressure at the underwater breach, and adapting to the installation and clamping stresses during the plugging operation. This prevents deformation, cracking, and other damage during operation, ensuring that the plugging plate 1 maintains a stable structural shape over a long period and guarantees the sealing effect.

[0081] In terms of seawater corrosion resistance, this high-performance austenitic stainless steel exhibits superior performance. In natural seawater environments, its uniform corrosion rate is ≤0.1mm / a, far lower than that of ordinary stainless steel, effectively resisting long-term erosion from corrosive media such as seawater, marine atmosphere, and salinity. This characteristic is particularly important, ensuring that even after emergency leak sealing operations are completed, if the leak sealing plate 1 is not removed due to on-site conditions, it will not experience rapid corrosion or rust failure. This avoids corrosion products affecting the sealing performance, extends the service life of the device, reduces subsequent maintenance and replacement costs, and further enhances the overall reliability and practicality of high-performance marine leak sealing devices, making them suitable for the harsh environmental requirements of long-term marine voyages.

[0082] After discovering the underwater breach, move the entire device to the corresponding location inside the ship. Use a long-handled tool to rotate the shaft 16 on the sliding frame 13, so that the magnet 15 faces the hull, and attach the sliding frame 13 to the outside of the breach. Align the sliding seat 12 of the fixing frame 11 and fit it onto the sliding frame 13.

[0083] Next, unscrew the limit bolt 50 to release the lock on the internal threaded tube 2 system. Hold the handle of the fixing frame 11 and release your hand; the device will begin to slide down the sliding frame 13 under the action of gravity. The roller 21 rolls down close to the inner wall of the ship.

[0084] When roller 21 rolls to the edge of the breach and "falls into the void," the second spring 19 is released instantly, strongly pulling the internally threaded tube 2 and the externally threaded rod 3 through the traction frame 18, causing the end block 4 and the stop rod 6 to be quickly and accurately "ejected" out of the breach. After the stop rod 6 moves out of the retaining ring 22, it automatically unfolds under the action of the first spring 7, completing the external anchoring. At the same time, the automatic braking component activates, locking the fixing frame 11.

[0085] Afterwards, personnel above the water installed the positioning plate 47 and the assembly with the internal hexagonal sleeve 49 onto the top of the sliding frame 13. The long hexagonal shaft 33 was inserted into the rotating rod 31. Initial rotation of the hexagonal shaft 33 released the rigid brake via the brake release linkage unit. Continuous rotation of the hexagonal shaft 33 drove the internally threaded tube 2 to rotate. Since the externally threaded rod 3 was limited by the hexagonal rod 35 and could not rotate, the rotation of the internally threaded tube 2 was converted into its own upward movement, thereby pulling the plugging plate 1 connected to it tightly against the inner wall of the hull. The rubber sealing edge 10 underwent large deformation, achieving a watertight seal. The sealing ring 23 simultaneously sealed the internal gap. Finally, the hexagonal shaft 33 and other driving tools were removed. The leak sealing was completed, and personnel evacuated.

[0086] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-performance leak-sealing device for the manufacture of transport ships, characterized in that, include: A leak-stopping plate (1) is provided with a rubber sealing edge (10) for sealing the hull breach. The blind alignment guide assembly is used to enable the device to slide down the inner wall of the ship to complete the blind positioning and placement of the underwater breach, and can also achieve controllable fixation with the hull. A threaded drive assembly, comprising an internally threaded tube (2), an externally threaded rod (3), and a hexagonal rod (35). The internally threaded tube (2) is rotatably connected to the plugging plate (1), and the externally threaded rod (3) is threadedly engaged with the internally threaded tube (2) to form the execution end of the threaded transmission assembly, and its end is provided with an anti-reverse limiting structure; The hexagonal rod (35) is fixed to the traction frame (18) and extends into the hexagonal groove (36) of the external thread rod (3) to restrict the circumferential rotation of the external thread rod (3); An elastic feed assembly, linked with the threaded transmission assembly, is used to drive the actuator of the threaded transmission assembly to automatically pass through the tear. The plugging plate (1), the internally threaded pipe (2), the externally threaded rod (3), and the hexagonal rod (35) are all made of non-magnetic high-strength austenitic stainless steel. By weight percentage, its chemical composition includes: C≤0.08%, Mn 7.0%~9.0%, Ni 8.0%~10.0%, Cr 18.0%~20.0%, Mo 2.0%~3.0%, N 0.20%~0.30%, with the balance being Fe and unavoidable impurities. The material has an austenitic single-phase structure, a relative magnetic permeability ≤1.01, and a yield strength ≥420MPa.

2. The high-performance leak-sealing device for transport ship manufacturing according to claim 1, characterized in that, The blind alignment guidance component includes: The sliding frame (13) has an internal rotating shaft (16). The magnetic block (15) and the magnetic shielding block (14) are fixed on the outside of the rotating shaft (16). By rotating the rotating shaft (16), the orientation of the magnetic block (15) is switched, so as to realize the controllable magnetic attraction fixation or magnetic shielding of the sliding frame (13) and the hull. The sliding seat (12) is slidably engaged with the sliding frame (13); The fixed bracket (11) is fixedly connected to the sliding seat (12) and is used to install the threaded transmission assembly and the elastic feed assembly; The roller (21) is rotatably connected to the end of the external threaded rod (3) via the fixing block (20) and is used to roll along the inner wall of the ship to assist in sliding and positioning.

3. The high-performance leak-sealing device for transport ship manufacturing according to claim 1, characterized in that, The elastic feed component includes: The traction frame (18) is rotatably connected to the internally threaded tube (2); The second spring (19) connects the traction frame (18) and the fixing plate (25), and is initially in a compressed state; The fixing plate (25) is fixedly connected to the fixing frame (11) through the connecting plate (26). When the roller (21) rolls to the rupture position, the second spring (19) restores its deformation and drives the external thread rod (3) to automatically extend into the rupture.

4. The high-performance leak-sealing device for transport ship manufacturing according to claim 3, characterized in that, It also includes an automatic braking component, which is linked with the elastic feeding component to limit the device from continuing to slide down after it is aligned with the opening, so as to avoid misalignment and scraping.

5. The high-performance leak-sealing device for transport ship manufacturing according to claim 4, characterized in that, The automatic braking component includes: Brake pad (40) is disposed in the groove (39) inside the sliding seat (12); The connecting rod (41) and the push plate (42) are connected to the brake pads (40) in sequence. The sliding rod (43), the guide wheel (44), and the inclined bar (46) constitute a linkage structure; The push rod (37) is connected to the sliding rod (43) and the traction frame (18) at both ends respectively. When the traction frame (18) is fed, it drives the brake pad (40) to clamp the sliding frame (13) to achieve braking.

6. The high-performance leak-sealing device for transport ship manufacturing according to claim 1, characterized in that, It also includes a pressure-relief drive component, which is linked with the automatic braking component and the threaded transmission component to release the rigid clamping of the automatic braking component and drive the threaded transmission component to complete the pressing action of the plugging plate (1).

7. The high-performance leak-sealing device for transport ship manufacturing according to claim 6, characterized in that, The pressure-relief drive assembly includes: The remote transmission unit includes a bevel ring (27) rotatably mounted on the fixed frame (11), a bevel gear (30) meshing with the bevel ring (27), and a rotating rod (31) fixedly connected to the bevel gear (30). The bevel ring (27) is keyed to the internal threaded tube (2) of the threaded transmission assembly and is used to drive the internal threaded tube (2) to rotate above the water surface. The brake release linkage unit includes a linkage protrusion fixed to the outside of the bevel ring (27) and a release rod that cooperates with the linkage protrusion. The release rod is linked with the push plate (42) of the automatic brake assembly. When the remote transmission unit drives the internal thread tube (2) to rotate, the linkage protrusion pushes the release rod to release the rigid clamping of the brake pad (40) on the sliding frame (13).

8. The high-performance leak-sealing device for transport ship manufacturing according to claim 1, characterized in that, The anti-reverse limiting structure includes: End block (4) is fixed to the end of the external threaded rod (3); Multiple stop bars (6) are hinged to the end block (4) through right-angle stop grooves (5) and can be unfolded to be perpendicular to the end block (4); A conical ring (8) is slidably sleeved on the outside of the external threaded rod (3), and a beveled surface (9) is provided between it and the stop rod (6). The first spring (7) connects the cone ring (8) and the plugging plate (1) and is used to push the cone ring (8) to open the stop bar (6). A retaining ring (22) is fitted on the outside of the external threaded rod (3) and is used to retract the retaining rod (6) before it is inserted. The retaining ring (22) is fixedly connected to the fixing frame (11) through a sliding rod (24).

9. The high-performance leak-stopping device for the manufacture of transport ships according to claim 8, characterized in that, The retaining ring (22) is provided with a sealing ring (23) on the side near the plugging plate (1) to seal the gap between the slide rod (24) and the plugging plate (1); it also includes a limiting bolt (50), which is threaded to the connecting plate (26) and cooperates with the internal threaded tube (2) to position and lock the internal threaded tube (2) in the non-working state.

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