A seabed anchoring device with adaptive function and marine engineering equipment

Abstract

The application relates to the technical field of ocean engineering, and particularly discloses a seabed anchoring device with a self-adaptive function and ocean engineering equipment; wherein the seabed anchoring device comprises an outer shell, an inner sinker and a rope-chain connecting piece; the outer shell is internally provided with a movable cavity penetrating through the bottom; the inner sinker is movably arranged in the movable cavity in the vertical direction; the rope-chain connecting piece passes through the top of the outer shell and connects the inner sinker; and the height of the inner sinker is smaller than the height of the movable cavity. In the scheme, the inner sinker can contain a plurality of inner embedded bodies, so that the inner sinker and the outer shell form a multi-layer nested structure which can adapt to the concave-convex topography of the seabed and the disturbance of sea waves. When the inner sinker and the outer shell are adsorbed to the seabed, the rope-chain connecting piece can pull the inner sinker to float upwards relative to the outer shell, thereby destroying the adsorption sealing effect of the bottom surface and reducing the influence of the adsorption force on the seabed anchoring device.

Description

Technical Field

[0001] This application relates to the field of marine engineering technology, and in particular to a seabed anchoring device and marine engineering equipment with adaptive function. Background Technology

[0002] Subsea anchoring devices are used in marine environments to provide anchoring force to a body; the body can be a floating body such as a ship, offshore platform, or marine aquaculture cage, or an underwater vehicle such as a submersible. A bottom-sinking gravity anchor is a type of subsea anchoring device, which generally includes a gravity anchor and an anchor chain; the anchor chain connects the gravity anchor and the body; after the gravity anchor sinks to the seabed, it can provide anchoring force to the body using its own weight.

[0003] Taking a deep-sea submersible as an example, the bottom of the submersible is equipped with several bottom-sinking gravity components. After the gravity components sink to the seabed and contact the seabed, they can keep the submersible at a certain distance from the seabed and achieve hovering, thereby avoiding contact with and damage to the submersible by seabed rocks.

[0004] In actual operations, in soft geological environments such as soft clay or silt on the seabed, an adsorption force will be generated between the gravity component and the seabed. Correspondingly, this adsorption force needs to be overcome when the gravity component separates from the seabed. When the gravity component is adsorbed between the gravity component and the seabed, the magnitude of the adsorption force is related to the bottom area of ​​the gravity component.

[0005] When the bottom area of ​​the gravity component is designed to be large, the larger bottom area will generate a greater suction force when the gravity component is lifted off the bottom. This requires the main body to provide a larger pulling force to the gravity component, thus placing high demands on the provided power. At the same time, if the positive buoyancy provided by the main body is insufficient to overcome the suction force, the suction force will affect the normal lifting and lowering function of the main body, and in severe cases, it may damage the main body.

[0006] When the bottom area of ​​the gravity component is designed to be small, the suction force that the gravity component needs to overcome when it leaves the bottom is smaller. However, in soft geological environments, the risk of the gravity component sinking is high. When the main body is connected to multiple gravity components, different depths of sinking of different gravity components can also lead to the risk of instability and tilting of the main body. Summary of the Invention

[0007] In view of this, the purpose of this application is to provide a subsea anchoring device and marine engineering equipment with adaptive function to solve some or all of the above problems.

[0008] To achieve the above-mentioned technical objectives, the first aspect of this application provides a seabed anchoring device with adaptive function, comprising: an outer shell, an inner sinker, and a rope chain connector;

[0009] The outer shell is provided with a movable cavity that extends through the bottom;

[0010] The inner sinker is movably disposed in the movable cavity along the vertical direction;

[0011] The rope-chain connector passes through the top of the outer casing and connects to the inner sinker;

[0012] The height of the inner sinker is less than the height of the movable cavity.

[0013] Furthermore, the inner submersible comprises: a plurality of inlays;

[0014] Several inlays are sequentially inserted from the inside to the outside to form a telescopic sleeve structure;

[0015] The rope-chain connector connects to the innermost inlay.

[0016] Furthermore, the sinker is a sphere or a cylinder with its axis set vertically.

[0017] Furthermore, the bottom of the movable cavity is square.

[0018] Furthermore, the inner sinker has multiple grooves on its outer peripheral surface along the horizontal direction;

[0019] The plurality of grooves are evenly distributed around the circumference;

[0020] The rope-chain connector extends into the groove to connect to the sinker.

[0021] Furthermore, the inner layer of the outer shell is provided with a hollow cavity;

[0022] The hollow cavity is filled with sand and gravel.

[0023] Furthermore, the hollow cavity comprises multiple hollow cavities, and the multiple hollow cavities are evenly distributed around the circumference.

[0024] Furthermore, the interior of the inner sinker is provided with a hollow cavity;

[0025] The hollow cavity is filled with sand and gravel.

[0026] Furthermore, the outer shell and / or the inner sinker are made of plastic.

[0027] Furthermore, the outer shell and / or the inner sinker are made of concrete.

[0028] Furthermore, it also includes limiting components;

[0029] The limiting member is disposed on the outer shell and is used to limit the downward movement of the inner sinker relative to the outer shell.

[0030] The second aspect of this application provides a marine engineering device, including: a main body of the device and a plurality of the above-mentioned seabed anchoring devices with adaptive functions;

[0031] The rope chain connector in the adaptive seabed anchoring device connects to the main body of the equipment.

[0032] As can be seen from the above technical solutions, this application provides a seabed anchoring device and marine engineering equipment with adaptive function; wherein, the seabed anchoring device includes: an outer shell, an inner sinker and a rope chain connector; the outer shell is provided with a movable cavity penetrating the bottom; the inner sinker is movably disposed in the movable cavity in a vertical direction; the rope chain connector passes through the top of the outer shell and connects to the inner sinker; the height of the inner sinker is less than the height of the movable cavity.

[0033] In this design, the inner sinker and the outer shell form a nested structure, enabling it to adapt to the uneven terrain of the seabed and the disturbance of ocean waves. When the inner sinker and the outer shell adhere to the seabed and it is necessary to raise the seabed anchoring device, the rope chain connector can pull the inner sinker relative to the outer shell to float up, thereby breaking the adhesion and sealing effect on the bottom surface and reducing the impact of the adhesion force on the seabed anchoring device.

[0034] Therefore, the seabed anchoring device provided by this solution can be of a larger size, which can reduce the impact of a large bottom area by breaking the adsorption seal, while avoiding the risk of sinking caused by a small bottom area. Attached Figure Description

[0035] 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.

[0036] Figure 1 A perspective structural diagram of an adaptive seabed anchoring device provided for an embodiment of this application, without showing the rope chain connector;

[0037] Figure 2 A perspective structural diagram of the outer shell of a subsea anchoring device with adaptive function provided in an embodiment of this application;

[0038] Figure 3 A perspective structural diagram of the inner sinker of an adaptive seabed anchoring device provided in this application embodiment;

[0039] Figure 4A side cross-sectional view of an adaptive seabed anchoring device provided in an embodiment of this application;

[0040] Figure 5 A perspective view of a multi-layered structure of the inner sinker of a subsea anchoring device with adaptive function provided in an embodiment of this application;

[0041] Figure 6 A side cross-sectional view of an adaptive seabed anchoring device provided in this application embodiment with a limiting component installed;

[0042] In the picture:

[0043] 10. Outer shell; 11. Movable cavity; 12. Hollow cavity; 13. Sand injection hole; 14. Perforation; 15. Second hanging ring;

[0044] 20. Inner sinker; 21. Groove; 22. Inlay; 221. Second movable cavity; 23. Hollow cavity; 24. Hanging ring; 25. Second sand injection hole;

[0045] 30. Rope chain connector;

[0046] 40. Limiting components. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments in this application specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection claimed in this application.

[0048] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, 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 embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0050] Please see Figures 1 to 4 The first aspect of this application provides a seabed anchoring device with adaptive function. The seabed anchoring device can be used as a bottom-sinking gravity component and can be applied to marine engineering equipment such as submersibles and marine aquaculture cages. After the marine anchoring device sinks into the seabed, it can provide anchoring force to the connected marine engineering equipment through its own weight and the friction of the seabed.

[0051] In this embodiment, the seabed anchoring device includes: an outer shell 10, an inner sinker 20, and a rope chain connector 30.

[0052] The outer shell 10 serves as the main load-bearing structure, capable of sinking to the bottom under its own weight. The external structure of the outer shell 10 can be configured similarly to existing bottom-sinking gravity components, for example, as a rectangular block. Unlike existing bottom-sinking gravity components, in this embodiment, the outer shell 10 has a through-hole movable cavity 11 and an inner sinker 20.

[0053] The inner sinker 20 is also a component that sinks to the bottom of the water by its own weight. Furthermore, the inner sinker 20 is vertically movably disposed within the movable cavity 11, forming a nested structure with the outer shell 10 that can move relative to each other. The height of the inner sinker 20 is less than the height of the movable cavity 11, allowing the inner sinker 20 to completely enter the movable cavity 11 or extend outside the movable cavity 11 through a through-structure at the bottom of the movable cavity 11. The inner sinker 20 is connected to the main body of the marine engineering equipment via a rope chain connector 30.

[0054] A rope-chain connector 30 passes through the top of the outer casing 10 and connects to the inner sinker 20. In practical applications, the rope-chain connector 30 can be a chain structure, such as an existing anchor chain. In other embodiments, the rope-chain connector 30 can also adopt a rope structure that combines high strength, wear resistance, and good flexibility, such as a synthetic fiber rope made of ultra-high molecular weight polyethylene and configured as a multi-strand braided rope. To facilitate the passage of the rope-chain connector 30 through the outer casing 10, a perforation 14 can be provided at the top of the outer casing 10; the perforation 14 allows the rope-chain connector 30 to pass through, and the diameter of the perforation 14 is smaller than the outer diameter of the inner sinker 20 to restrict the passage of the inner sinker 20. When the rope-chain connector 30 pulls the inner sinker 20 upward, after the inner sinker 20 rises to abut against the outer casing 10, it will push the outer casing 10 upward synchronously.

[0055] For ease of explanation, the marine anchoring device connected to the submersible provided in this embodiment is used as an example, that is, one end of the rope chain connector 30 is connected to the submersible, and the other end is connected to the sinker 20.

[0056] In use, the outer shell 10 and the inner sinker 20 sink together into the seawater until they touch the seabed. At this time, if the rope chain connector 30 is pulled to rise, it needs to overcome the weight of both the outer shell 10 and the inner sinker 20. Therefore, the outer shell 10 and the inner sinker 20 can jointly provide anchoring force for the submersible.

[0057] When rocks or uneven surfaces exist on the seabed, traditional bottom-mounted gravity anchors can become unstable due to the uneven seabed topography, posing a risk of overturning. Furthermore, when bottom-mounted gravity anchors are placed unevenly, their contact area with the seabed is small, resulting in insufficient anti-overturning moment and a tendency to shift. They can also move under the influence of ocean currents and other factors, reducing the accuracy of their placement. The seabed anchoring device provided in this embodiment is adaptive to seabed topography, thus avoiding the above problems.

[0058] Specifically, because the inner sinker 20 and the outer shell 10 can move relative to each other, they can adapt to the seabed topography, increasing the contact area between the seabed anchoring device and the seabed. This increases the stability of its placement while reducing the risk of capsizing, thereby improving the overall balance and stability of the submersible during hovering. At the same time, the improved placement stability reduces the risk of the seabed anchoring device shifting, thus also improving the positioning accuracy of the seabed anchoring device.

[0059] When waves disturb the submersible, it rises and falls with the waves, transmitting the disturbance to the bottom gravity member via the chain connector 30. Normally, the buoyancy generated by the disturbance is insufficient to lift the bottom gravity member, but the disturbance causes the chain connector 30 to repeatedly undergo forced stretching and slackening, resulting in significant damage to both the chain connector 30 and the bottom gravity member. Furthermore, localized stress concentration can occur at the connection point between the submersible and the chain connector 30, increasing the risk of damage or instability to the submersible. The seabed anchoring device provided in this embodiment enhances the submersible's adaptability to wave disturbances, thus avoiding the aforementioned problems.

[0060] Specifically, when the submersible is affected by the waves, the inner sinker 20, being lighter in mass, is more easily moved by the submersible, thus reducing the degree of reciprocating stretching and slack of the rope-chain connector 30 and reducing stress on the submersible. When the inner sinker 20 is pulled up to abut against the outer shell 10, the relatively heavier outer shell 10 ensures the overall stability of the seabed anchoring device. In summary, in this embodiment, the relatively movable structure of the inner sinker 20 and the outer shell 10 increases the travel of the rope-chain connector 30, giving the seabed anchoring device an adaptive ability to float and sink with wave disturbances, thus reducing damage to the submersible and the seabed anchoring device while ensuring stability.

[0061] It should be noted that, in practical applications, the travel distance of the inner sinker 20 within the movable cavity 11 can be set according to the actual application results.

[0062] In soft geological environments such as seabed clay or sludge, bottom-mounted anchors can form a sealed adhesion with the seabed. Traditional bottom-mounted anchors are typically lifted by applying a pulling force to overcome this adhesion, which places high demands on the submersible's propulsion system and can easily damage the submersible under strong adhesion forces. The seabed anchoring device provided in this embodiment solves these problems by disrupting the sealed adhesion between the anchor and the seabed.

[0063] Specifically, in the seabed anchoring device provided in this embodiment, the perforation 14 allows seawater to enter the movable cavity 11. Therefore, the sealing and adsorption degree generated by the inner sinker 20 and the outer shell 10 is lower than that generated by a solid structure of the same volume. Simultaneously, when the rope-chain connector 30 is pulled upwards, it first pulls the inner sinker 20 upwards. Since the height of the inner sinker 20 is less than the height of the movable cavity 11, the inner sinker 20 can be completely retracted into the movable cavity 11. Therefore, the upward movement of the inner sinker 20 creates a height difference between the bottom surface of the inner sinker 20 and the bottom surface of the outer shell 10, thus disrupting the sealing and adsorption effect between them and the seabed. After the sealing and adsorption effect is disrupted, the power system can overcome the gravity of the seabed anchoring device to achieve its retrieval. Therefore, the seabed anchoring device provided in this embodiment can overcome the influence of adsorption force on the submersible and the seabed anchoring device, while allowing for a larger bottom area design value for the inner sinker 20 and the outer shell 10 to reduce the risk of the inner sinker 20 and the outer shell 10 sinking.

[0064] Assuming that no suction force is generated, the pulling force required for the power system to recover the solid bottom-sinking gravity component is a first pulling force value. When suction force is generated, the pulling force required for the power system to recover the solid bottom-sinking gravity component is a second pulling force value. The second pulling force value is significantly greater than the first pulling force value. This embodiment provides a seabed anchor recovery device that can provide a third pulling force value to the rope-chain connector 30 via the power system. This third pulling force value is greater than the first pulling force value but less than the second pulling force value.

[0065] Specifically, during the process of the inner sinker 20 rising to the top surface of the active cavity 11 under the pull of the tension, the inner sinker 20 does not rise completely at the beginning because the adsorption force has not been completely eliminated, so the outer shell 10 remains stationary. After a certain period of time, the sludge that rose with the inner sinker 20 gradually falls back, which destroys the sealing adsorption effect between the inner sinker 20 and the outer shell 10 and the seabed. At this time, the power system can recover the outer shell 10 and the inner sinker 20 by maintaining the third pulling force. In practical applications, since the bottom of the outer shell 10 is annular, the magnitude of the adsorption force it generates is much smaller than that in a solid case; therefore, the difference between the second and third pulling forces in this embodiment is large, which can effectively reduce the power requirements of the power system and reduce the risk of damage to the submersible.

[0066] This embodiment provides another implementation method for recovering the seabed anchoring device as follows: The power system provides a third pulling force to the rope chain connector 30; the inner sinker 20 is pulled up by the pulling force to abut the top surface of the movable cavity 11, and then the pulling force is removed to make the inner sinker 20 sink. This is repeated a preset number of times to destroy the sealing and adsorption effect between the inner sinker 20 and the outer shell 10 and the seabed. After that, the power system maintains the third pulling force to recover the outer shell 10 and the inner sinker 20.

[0067] In another embodiment provided in this application, please refer to Figures 1 to 5 The inner sinker 20 includes: several inner bodies 22; the several inner bodies 22 are sequentially embedded from the inside to the outside to form a telescopic sleeve structure; the rope chain connector 30 connects the innermost inner body 22.

[0068] As one implementation method, such as Figure 5 As shown, the inner sinker 20 may include multiple inlays 22 to form a multi-layered, nested telescopic sleeve structure. Each inlay 22 has a second movable cavity 221; the innermost inlay 22 is disposed within the second movable cavity 221 of the adjacent outermost inlay 22. Furthermore, the height of the inlay 22 is less than the height of the second movable cavity 221 into which it is placed.

[0069] In this embodiment, taking the sinker 20 as an example, which includes four inlays 22, they are inlay one, inlay two, inlay three, and inlay four from the outside in. The height of inlay four is less than the height of the second movable cavity 221 of inlay three; the height of inlay three is less than the height of the second movable cavity 221 of inlay two; and the height of inlay two is less than the height of the second movable cavity 221 of inlay one. Furthermore, inlay four, as the innermost inlay 22, is connected to the rope-chain connector 30.

[0070] In this embodiment, the multi-layered nested structure increases the flexibility of the rope chain connector 30. For example, in uneven seabed terrain, the inlays 22 can move relative to each other, thereby further improving the adaptability of the seabed anchoring device to the terrain. When facing wave disturbances, since the innermost inlay 22 has a smaller mass, the rope chain connector 30 is also easier to move, and the upward resistance of the rope chain connector 30 is transmitted from the inside to each inlay 22, achieving a step-like increase. Compared to the situation where the rope chain connector 30 needs to withstand an upward resistance equivalent to the overall weight of the sinker 20 at once, the rope chain connector 30 in this embodiment is more flexible and therefore has a stronger adaptability to wave disturbances.

[0071] When it is necessary to break the sealing and adsorption effect, when the inner sinker is pulled by the rope chain connector 30, the existence of the multi-layer nested structure makes the inner sinker 20 separate from the seabed layer by layer. Therefore, the adsorption force that needs to be resisted is small, which can effectively reduce the influence of the adsorption force.

[0072] It should be noted that the innermost inlay 22 is relatively prone to sinking due to its small base area. However, because of its small mass, even if it sinks, the impact on the submersible is also small, and therefore it will not cause the submersible to become unstable or tilt.

[0073] Furthermore, a limiting structure can be provided on the embedded body 22 to restrict the sliding stroke of adjacent embedded bodies 22, preventing multiple embedded bodies 22 from completely disengaging. This will be explained using embedded body one and embedded body two as examples. When the embedded body 22 is made of metal, the limiting structure can, for example, include a protrusion on the top of the outer periphery of embedded body two. After embedded body two is movably inserted into the second movable cavity 221 of embedded body one, a locking block is welded to the bottom of embedded body one to restrict the sliding of the protrusion, thereby limiting the movement stroke of embedded body two. Similarly, when the embedded body 22 is made of plastic, the locking block can be provided at the bottom of embedded body 22 by means of hot-melt welding, etc., to limit the movement stroke of embedded body 22.

[0074] In other implementations, such as Figure 3 As shown, the inner sinker 20 may include an inlay 22, that is, the inner sinker 20 is a single-layer structure.

[0075] In one embodiment, the inner sinker 20 is a sphere or a cylinder with its axis arranged vertically, which can reduce wear between the outer periphery of the inner sinker 20 and the movable cavity 11.

[0076] Based on the above embodiment, the bottom of the movable cavity 11 is square. In the case where the inner sinker 20 slides completely out of the movable cavity 11 without the setting of a limiting structure, the inner sinker 20 is easier to reinstall into the movable cavity 11, reducing the risk of the inner sinker 20 getting stuck with the bottom of the outer shell 10.

[0077] In one embodiment, the inner sinker 20 has a plurality of grooves 21 on its outer peripheral surface along the horizontal direction; the plurality of grooves 21 are evenly distributed in a circle; the rope chain connector 30 extends into the grooves 21 to connect the inner sinker 20.

[0078] In this embodiment, a hanging ring 24 can be provided in the groove 21, and the rope chain connector 30 is connected through the hanging ring 24. By having multiple circumferentially evenly distributed grooves 21, the uniformity of force on the rope chain connector 30 and the inner sinker 20 can be increased, and the tilting of the inner sinker 20 relative to the outer shell 10 can be reduced.

[0079] It should be noted that when multiple inserts 22 are provided, if the innermost insert 22 has a smaller diameter and it is inconvenient to provide a groove 21, the rope chain connector 30 can be configured to directly extend into the interior of the insert 22 and connect to the insert 22.

[0080] In one embodiment, the inner layer of the outer shell 10 is provided with a hollow cavity 12; the hollow cavity 12 is filled with sand and gravel.

[0081] The sand and gravel inside the outer shell 10 can play a tuning role and damping effect of particle damping, and at the same time, it can lower the center of gravity of the outer shell 10 to improve stability.

[0082] In one embodiment, the outer shell 10 may be provided with a sand injection hole 13 that communicates with the hollow cavity 12; sand and gravel can be injected into the hollow cavity 12 through the sand injection hole 13, and then the sand injection hole 13 can be sealed by means of sealing plug or other methods.

[0083] In practical applications, the center of gravity of the outer shell 10 can be adjusted by adjusting the amount of sand poured in.

[0084] In a more specific embodiment, the hollow cavity 12 includes a plurality of hollow cavities, and the plurality of hollow cavities 12 are evenly distributed around the circumference.

[0085] Multiple hollow cavities 12 can separate the sand and gravel, preventing excessive displacement of the sand and gravel to the same side due to the tilting of the outer shell 10 during sinking or when contacting the seabed, thus improving the overall stability of the outer shell 10.

[0086] In application, the interior of the outer shell 10 can be divided into multiple hollow cavities 12 by setting a partition inside the outer shell 10.

[0087] In one embodiment, the interior of the sinker 20 is provided with a hollow cavity 23; the hollow cavity 23 is filled with sand and gravel.

[0088] Similarly, a second sand injection hole 25 can be provided on the top surface of the inner sinker 20. Sand and gravel can be injected into the hollow cavity 23 through the second sand injection hole 25, and then the second sand injection hole 25 can be sealed by means of a sealing plug or the like. Furthermore, when the inner sinker 20 is configured to include multiple inlays 22, the hollow cavity 23 can be configured to form a sandwich cavity structure similar to the hollow cavity 12.

[0089] During application, when the seabed topography is undulating or the geology is soft, the inner sinker 20 and the outer shell 10 can not only form a height difference to adapt to the terrain, but also adaptively adjust the overall center of gravity according to the landing point position and landing attitude to increase the stability of the seabed anchoring device.

[0090] In one embodiment, the outer shell 10 and / or the inner sinker 20 are made of plastic. Specific plastic materials can be, for example, glass fiber reinforced plastic (GFRP), polyetheretherketone (PEEK), or modified engineering plastics, which combine wear resistance, corrosion resistance, and ease of manufacturing. After fabrication, the outer shell 10 and the inner sinker 20 can be ensured to sink to the bottom by the aforementioned sand injection method.

[0091] In one embodiment, the outer shell 10 and / or the inner sinker 20 are made of metal.

[0092] In one embodiment, the outer shell 10 and / or the inner sinker 20 are made of concrete.

[0093] In one embodiment, see Figures 1 to 6 The seabed anchoring device also includes a limiting member 40; the limiting member 40 is disposed on the outer shell 10 and is used to limit the downward movement of the inner sinker 20 relative to the outer shell 10.

[0094] As described in the embodiment where a limiting structure is provided on the embedded body 22, the limiting member 40 may be a protrusion provided at the bottom of the outer shell 10, so that it forms a limiting engagement with the protrusion on the outer periphery of the inner sinker 20.

[0095] As one implementation, with the outer shell 10 made of metal, the limiting member 40 can be a chain structure. Specifically, a second hanging ring 15 can be provided in the movable cavity 11; the limiting member 40 is connected between the hanging ring 24 and the second hanging ring 15 to provide travel limit for the inner body 22 through its chain structure.

[0096] In practical applications, when preparing the outer shell 10 and the inner sinker 20, the outer shell 10 can be divided into multiple parts to facilitate the installation of other components. After the limiting member 40, the rope chain connector 30, and the inner sinker 20 are installed, the aforementioned multiple parts are then sealed by welding or other methods to form a seabed anchoring device.

[0097] The movement of the inner sinker 20 can be limited by the limiting member 40, so that after the inner sinker 20 sinks to a certain extent, it can transmit the sinking force to the outer shell 10. This makes the overall structure more stable. On the other hand, when the inner sinker 20 sinks, the outer shell 10 can provide support to the inner sinker 20 through the limiting member 40 to prevent the inner sinker 20 from sinking too much.

[0098] The second aspect of this application provides a marine engineering device, comprising: a main body of the device and a plurality of the aforementioned self-adaptive seabed anchoring devices; a rope chain connector 30 in the self-adaptive seabed anchoring devices is connected to the main body of the device.

[0099] The marine engineering equipment provided in this embodiment can be marine aquaculture cages, offshore operation platforms, and submersibles, etc. Through an adaptive seabed anchoring device, the stability of the marine engineering equipment during hovering can be increased and the disturbance from sea waves reduced.

[0100] The above are merely preferred embodiments of this application and are not intended to limit the present invention. Although this application has been described in detail with reference to examples, those skilled in the art can still modify the technical solutions described in the foregoing examples or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A seabed anchoring device with adaptive function, characterized in that, include: The outer shell (10), the inner sinker (20), and the rope chain connector (30); The outer shell (10) is provided with a movable cavity (11) that extends through the bottom. The inner sinker (20) is movably disposed in the movable cavity (11) in the vertical direction; The rope chain connector (30) passes through the top of the outer shell (10) and connects to the inner sinker (20). The height of the inner sinker (20) is less than the height of the active cavity (11); The indenter (20) includes: a plurality of inlays (22); Several inlays (22) are sequentially inserted from the inside to the outside to form a telescopic sleeve structure; The rope chain connector (30) connects to the innermost inlay (22).

2. The self-adaptive seabed anchoring device according to claim 1, characterized in that, The inner sinker (20) is a sphere or a cylinder with its axis set in the vertical direction.

3. The self-adaptive seabed anchoring device according to claim 2, characterized in that, The bottom of the active cavity (11) is square.

4. The self-adaptive seabed anchoring device according to claim 2, characterized in that, The inner sinker (20) has multiple grooves (21) on its outer peripheral surface along the horizontal direction. The plurality of grooves (21) are evenly distributed around the circumference; The rope chain connector (30) extends into the groove (21) and connects to the sinker (20).

5. The self-adaptive seabed anchoring device according to claim 1, characterized in that, The inner layer of the outer shell (10) is provided with a hollow cavity (12). The hollow cavity (12) is filled with sand and gravel.

6. The self-adaptive seabed anchoring device according to claim 5, characterized in that, The hollow cavity (12) includes multiple hollow cavities, and the multiple hollow cavities (12) are evenly distributed around the circumference.

7. The self-adaptive seabed anchoring device according to claim 5 or 6, characterized in that, The interior of the inner sinker (20) is provided with a hollow cavity (23); The hollow cavity (23) is filled with sand and gravel.

8. The seabed anchoring device with adaptive function according to claim 1, characterized in that, The outer shell (10) and / or the inner sinker (20) are made of plastic.

9. The self-adaptive seabed anchoring device according to claim 1, characterized in that, The outer shell (10) and / or the inner sinker (20) are made of concrete.

10. The seabed anchoring device with adaptive function according to claim 1, characterized in that, It also includes a limiting component (40); The limiting member (40) is disposed on the outer shell (10) to limit the downward movement of the inner sinker (20) relative to the outer shell (10).

11. A marine engineering device, characterized in that, include: The main body of the equipment and several seabed anchoring devices with adaptive functions as described in any one of claims 1 to 10; The rope chain connector (30) in the self-adaptive seabed anchoring device is connected to the main body of the device.

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