A retrievable anchor for deep-sea acoustic receiving mooring installation

Abstract

The present invention relates to the technical field of marine anchoring equipment. The present invention provides a recyclable anchor for installing a deep-sea acoustic receiving mooring buoy, which comprises an anchor body; an auxiliary fixing frame is arranged on the anchor body, the auxiliary fixing frame has a movable inner cavity, the movable inner cavity has a first outlet position, and the first outlet position faces one side of the outer wall of the anchor body; a swing claw is swingably arranged in the movable inner cavity and is located at the first outlet position, the swing axis of the swing claw is transverse, the swing claw is a fan-shaped member, the swing claw is configured to extend out or retract from the first outlet position after swinging, and always keep blocking the first outlet position after swinging. Through the above technical solutions, the technical problems of the lack of installation efficiency and stability of the anchor body of the suction anchor in the prior art are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of marine anchoring equipment, and in particular, to a retrievable anchor for installing a deep-sea acoustic receiving mooring buoy. Background Art

[0002] Deep-sea acoustic receiving mooring buoys play a crucial role in fields such as ocean observation and seismic monitoring. Their stable installation relies on reliable anchoring devices. Currently, the patent with the application publication number CN115924001B proposes a suction anchor reinforcement device, a suction anchor, and a suction anchor installation method. This structure uses mechanical locking and counterweights to fix the anchor body. However, in practical applications, this structure has obvious deficiencies.

[0003] Firstly, there is a large resistance when operating the reinforcement structure. This patent relies on the interaction between mechanical claws and the seabed bedrock to complete anchoring. However, due to the complex deep-sea environment and diverse seabed geological conditions, the claws are prone to getting stuck in soft sediments or stuck in irregular rock crevices. This not only makes it difficult for the claws to expand but also makes the sinking process of the anchor body unsmooth. Moreover, when retrieving the anchor body, the friction between the claws and the sediments is large, and additional power is required to pull it out from the seabed, which undoubtedly increases the operation difficulty and cost. Secondly, this structure causes sediment mixing. During the sinking and fixing process of the anchor body, the movement of the mechanical claws will disturb the surrounding sediment. These disturbed sediments will enter the internal structure of the anchor body, such as the locking mechanism and the counterweight chamber, with the water flow. The mixing of sediment may cause the locking mechanism to malfunction, affecting the fixing effect of the anchor body; at the same time, it will also increase the weight of the counterweight chamber, changing the buoyancy balance of the anchor body and thus affecting the normal operation of the mooring buoy. In addition, the sediment may also cause wear to the anti-corrosion layer of the anchor body, shortening the service life of the anchor body.

[0004] In summary, the existing retrievable anchor structure has obvious defects in terms of operation reinforcement and preventing sediment mixing, and needs to be improved. The present invention aims to provide a new retrievable anchor for installing a deep-sea acoustic receiving mooring buoy to solve the above problems, improve the installation efficiency and stability of the anchor body, and reduce the impact of sediment mixing on the performance of the anchor body. Summary of the Invention

[0005] To overcome the above defects, an embodiment of the present invention provides a retrievable anchor for installing a deep-sea acoustic receiving mooring buoy, which is used to be anchored on the seabed ground after sinking, and includes:

[0006] An anchor body;

[0007] An auxiliary fixing frame, the auxiliary fixing frame is arranged on the anchor body, the auxiliary fixing frame has a movable inner cavity, and the auxiliary fixing frame is provided with a first outlet position that penetrates radially along the anchor body, and the first outlet position faces the side of the outer wall of the anchor body;

[0008] A swing claw, which is swingably arranged in the movable inner cavity and is located at the first exit position. The axial direction of the swing axis of the swing claw is tangential to the side wall of the anchor body. The swing claw is a sector-shaped member, and the swing claw is configured to extend out or retract from the first exit position after swinging, and always block the first exit position after swinging.

[0009] For example, a retrievable anchor for installing a deep-sea acoustic receiving buoy provided by at least one embodiment of the present invention. The anchor body has a suction inner cavity, and the lower end of the suction inner cavity has an opening portion facing the sinking direction of the anchor body. The auxiliary fixing frame is detachably arranged on one side of the opening portion. The auxiliary fixing frame has an inner portion, an outer portion, and an insertion portion. The inner portion fits against the inner wall of the suction inner cavity, the outer portion fits against the outer wall of the anchor body, and the inner portion and the outer portion are respectively connected to both ends of the insertion portion.

[0010] For example, a retrievable anchor for installing a deep-sea acoustic receiving buoy provided by at least one embodiment of the present invention. The inner portion, the insertion portion, and the outer portion jointly have a connected movable inner cavity inside. The movable inner cavity is divided into a first cavity section, a second cavity section, and a third cavity section. The first cavity section is located in the inner portion, the second cavity section is located in the insertion portion, and the third cavity section is located in the outer portion. The first cavity section and the third cavity section both extend along the axial direction of the anchor body. One end of the third cavity section far from the second cavity section communicates with the outside, and the first exit position is located in the third cavity section;

[0011] There are a plurality of the first exit positions, which are arranged in an array on the outer portion. There are also a plurality of the swing claws, and the plurality of swing claws are arranged in one-to-one correspondence with the plurality of the first exit positions.

[0012] For example, a retrievable anchor for installing a deep-sea acoustic receiving buoy provided by at least one embodiment of the present invention. The swing claw has a strip-shaped guide groove penetrating through it. The strip-shaped guide groove is located on the end surface of the swing claw close to the anchor body, and further includes:

[0013] A first sliding member, which is arranged to slide up and down in the third cavity section. A plurality of sliding portions are arranged vertically on the first sliding member. The plurality of sliding portions respectively penetrate through the strip-shaped guide groove and are in sliding cooperation with the strip-shaped guide groove. The sliding portion can drive the swing claw to swing into or retract from the first exit position under the action of the first sliding member.

[0014] For example, a retrievable anchor for installing a deep-sea acoustic receiving buoy provided by at least one embodiment of the present invention, further includes:

[0015] A sliding plug member, which is slidably arranged on the built-in part;

[0016] A first connecting rod and a second connecting rod, both the first connecting rod and the second connecting rod are located in the second cavity section, one end of the first connecting rod is hinged to the sliding plug member; one end of the second connecting rod is hinged to the first connecting rod, and the other end is hinged to the first sliding member;

[0017] A limiting frame, which is arranged in the second cavity section, the limiting frame has an upper limiting part and a lower limiting part, the first connecting rod passes between the upper limiting part and the lower limiting part, and both sides of the first connecting rod are in contact with the upper limiting part and the lower limiting part respectively. The sliding plug member is configured to drive the sliding plug member to lift and slide through the first connecting rod and the second connecting rod after horizontal sliding, and then drive the swing claw to swing.

[0018] For example, a retrievable anchor for installing a deep-sea acoustic receiving mooring buoy provided by at least one embodiment of the present invention

[0019] The built-in part further has a pressure groove, the opening of the pressure groove faces the suction inner cavity, one end of the sliding plug member has a first sliding plate part, the first sliding plate part is horizontally slidably arranged in the pressure groove, and a pressure cavity is formed between the first sliding plate part and the inner wall of the pressure groove.

[0020] For example, a retrievable anchor for installing a deep-sea acoustic receiving mooring buoy provided by at least one embodiment of the present invention, both the upper and lower ends of the first sliding member have sealing parts, and a plurality of the first outlet positions are all located between the two sealing parts.

[0021] For example, a retrievable anchor for installing a deep-sea acoustic receiving mooring buoy provided by at least one embodiment of the present invention, the side of the sliding plug member close to the suction inner cavity has a protruding reinforcement part.

[0022] For example, a retrievable anchor for installing a deep-sea acoustic receiving mooring buoy provided by at least one embodiment of the present invention further includes:

[0023] An installation ring, which is detachably arranged on the opening part, and the auxiliary fixing frame is arranged on the installation ring.

[0024] For example, a retrievable anchor for installing a deep-sea acoustic receiving mooring buoy provided by at least one embodiment of the present invention, there are a plurality of the auxiliary fixing frames, and the plurality of auxiliary fixing frames are arranged in a circular array on the installation ring.

[0025] The beneficial effects of the embodiments of the present invention are:

[0026] In the present invention, in combination with the suction anchor principle, through the joint action of the swinging claw's grasping of the seabed and suction, the stability of the anchor body on the seabed is greatly enhanced. Compared with the traditional anchoring method that solely relies on suction or simple mechanical claws, this dual fixation mechanism can better resist the influence of complex deep-sea water currents, geological changes, and other factors on the anchoring effect, ensuring that the deep-sea acoustic receiving mooring buoy remains stable throughout the long-term observation process, and reducing the risk of data errors or equipment damage caused by unstable anchoring. The design that the swinging claw always blocks the first exit position effectively prevents seawater and seabed impurities from entering the movable inner cavity during the sinking, anchoring, and recovery processes, avoiding the erosion and interference of impurities on the mechanical structure of the swinging claw. This not only extends the service life of the swinging claw, reduces the maintenance cost, but also ensures that the swinging claw can maintain good working performance every time it is used, improving the reliability and stability of the entire recoverable anchor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the following-described drawings are only some exemplary embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the exemplary embodiments of the present invention and these drawings.

[0028] Figure 1 Structural schematic diagram of a recoverable anchor for installing a deep-sea acoustic receiving mooring buoy in an embodiment of the present invention;

[0029] Figure 2 For Figure 1 Internal structural schematic diagram of a recoverable anchor for installing a deep-sea acoustic receiving mooring buoy in an embodiment of;

[0030] Figure 3 For Figure 2 Partial enlarged structural schematic diagram of part B in;

[0031] Figure 4 For Figure 2 Partial enlarged structural schematic diagram of part A in;

[0032] Figure 5 For Figure 1 Structural schematic diagram of the auxiliary fixing frame in an embodiment of;

[0033] Figure 6 For Figure 5 Partial enlarged structural schematic diagram of part C in.

[0034] In the figure: anchor body - 1, suction inner cavity - 101, opening - 102, auxiliary fixing frame - 2, movable inner cavity - 201, first outlet position - 202, built - in part - 203, external part - 204, insertion part - 205, first cavity section - 206, second cavity section - 207, third cavity section - 208, pressure groove - 209, pressure cavity - 210, swing claw - 3, strip - shaped guide groove - 301, first sliding part - 4, sliding part - 401, plugging part - 402, sliding plug - 5, first sliding plate part - 501, protruding reinforcement part - 502, first connecting rod - 6, second connecting rod - 7, limiting frame - 8, upper limiting part - 801, lower limiting part - 802, mounting ring - 9. Detailed implementation mode

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention.

[0036] For the sake of simplicity of the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, for the sake of simplicity and easy understanding of the drawings, in some figures, parts with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation, and "several" includes "two" and "more than two".

[0037] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0038] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is lower than that of the second feature.

[0039] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying operations, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

[0040] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0041] As Figures 1 to 6 shown, it shows a recoverable anchor for the installation of a deep-sea acoustic receiving mooring buoy in an embodiment of the present invention, which is used to be anchored on the seabed ground after sinking.

[0042] For example, the anchor body 1 is the main structure of the entire recoverable anchor, and its design fully considers the stability and functionality in the deep-sea environment. Based on the basic principle of the traditional suction anchor, it has a relatively regular shape as a whole, such as a cylinder or a prism, and the bottom is usually designed as a structure convenient for inserting into the seabed sediment, such as a sharp cone or wedge, so as to sink more smoothly to the seabed under its own gravity and possible suction force and form a preliminary fixation with the seabed ground. A special space is provided inside the anchor body 1 for accommodating various auxiliary devices or apparatuses, such as a pressure balance system, a suction generation device, etc., to enhance the anchoring effect. At the same time, the outer wall of the anchor body 1 has a certain strength and roughness. The strength is used to resist the deep-sea high pressure and water flow impact, and the roughness helps to better combine with the seabed sediment during the anchoring process to prevent the anchor body from sliding. The auxiliary fixing frame 2 is attached to the anchor body 1 and is fixed to the anchor body 1 through a reliable connection method to ensure that the two always remain relatively stable and do not displace under the complex water flow, pressure and geological change environment in the deep sea. An active inner cavity 201 is constructed inside the auxiliary fixing frame 2, and the active inner cavity 201 has a first outlet 202, and this first outlet 202 faces one side of the outer wall of the anchor body 1, providing a channel for the swinging claw 3 to establish a connection with the external seabed environment. The edge of the first outlet 202 is polished and processed to ensure smoothness and flatness, avoiding unnecessary wear when the swinging claw 3 enters and exits the active inner cavity 201 and affecting its normal operation. During the entire working process of the swinging claw 3, whether in the extended state or the retracted state, it always blocks the first outlet 202. In the extended state, blocking the first outlet 202 can prevent seawater and surrounding impurities from entering the active inner cavity 201 from the side, causing erosion or interference to the mechanical structure of the swinging claw 3 and ensuring the reliability of its grasping action; in the retracted state, blocking the first outlet 202 can also maintain the relative stability of the internal environment of the active inner cavity 201 and avoid potential damage to the swinging claw 3 due to external environmental changes.

[0043] Before putting the retrievable anchor into use, it is necessary to ensure that the swing claw 3 is in the active inner cavity 201 and in the initial state of blocking the first outlet position 202. At the same time, conduct a comprehensive inspection and commissioning of various devices inside the anchor body 1, such as the suction generating device, the pressure balance system, etc., to ensure their normal operation. Accurately connect the retrievable anchor to the deep-sea acoustic receiving mooring buoy, complete the comprehensive commissioning and testing of all devices, and ensure that the entire system can work stably during the sinking process. The retrievable anchor and the deep-sea acoustic receiving mooring buoy start to sink together. During the sinking process after contacting the ground, the anchor body 1 gradually approaches the seabed by virtue of its own shape and weight, as well as the active negative pressure suction effect. During this process, the swing claw 3 always remains stably in the active inner cavity 201, and the first outlet position 202 is firmly blocked, effectively preventing seawater and seabed impurities from entering the active inner cavity 201 and avoiding interference with the normal operation of the swing claw 3. At the same time, the pressure balance system inside the anchor body 1 starts to work to balance the internal and external pressures and ensure the stability of the anchor body structure. When the retrievable anchor approaches the seabed ground, first use the principle of the suction anchor, and through the suction generating device inside the anchor body 1, form a negative pressure between the bottom of the anchor body and the seabed sediment, so that the anchor body 1 is initially fixed on the seabed. Then, drive the swing claw 3 to swing around the horizontal swing axis through the control mechanism. The swing claw 3 gradually extends from the active inner cavity 201 to the first outlet position 202. As the swing angle increases, the fan-shaped swing claw 3 gradually contacts and embeds into the seabed sediment or rock, etc. When the swing claw 3 is in full contact with the seabed and reaches the appropriate grasping angle and depth, stop driving the swing claw 3. At this time, the swing claw 3 tightly adheres to the seabed and, together with the suction effect, realizes the firm anchoring of the anchor body 1 on the seabed, providing stable support for the deep-sea acoustic receiving mooring buoy.

[0044] This solution combines the principle of the suction anchor. Through the joint action of the grasping of the swing claw 3 with the seabed and the suction force, the stability of the anchor body 1 on the seabed is greatly enhanced. Compared with the traditional anchoring methods that simply rely on suction or simple mechanical claws, this dual fixation mechanism can better resist the influence of complex deep-sea water flows, geological changes and other factors on the anchoring effect, ensure that the deep-sea acoustic receiving mooring buoy always remains stable during long-term observation, and reduce the risk of data errors or equipment damage caused by unstable anchoring. The design that the swing claw 3 always blocks the first outlet position 202 effectively prevents seawater and seabed impurities from entering the active inner cavity 201 during the sinking, anchoring and recovery processes, and avoids the erosion and interference of impurities on the mechanical structure of the swing claw 3. This not only extends the service life of the swing claw 3, reduces the maintenance cost, but also ensures that the swing claw 3 can maintain good working performance every time it is used, improving the reliability and stability of the entire retrievable anchor.

[0045] In some examples, the anchor body 1 serves as the core part of the entire device, and the suction inner cavity 101 inside it is the key structure for realizing the suction anchoring function. The shape of the suction inner cavity 101 is usually a regular cavity, such as a cylinder or a prism, for easy manufacturing and internal equipment layout. The opening 102 is located at one end of the suction inner cavity 101 and is precisely oriented towards the sinking direction of the anchor body 1. This design enables the seabed sediments to more easily enter the opening 102 during the sinking process, and during the subsequent formation of suction, it can better interact with the seabed to enhance the anchoring effect. The edge of the opening 102 is processed into an inclined or rounded shape, on the one hand, guiding the sediments to enter, and on the other hand, preventing excessive disturbance to the surrounding seabed environment during the sinking process. The auxiliary fixing frame 2 is detachably arranged on one side of the opening 102. This detachable connection method provides convenience for the installation, maintenance, and replacement of the equipment. In practical applications, threaded connection is mainly used, and magnetic connection or other methods can also be used to ensure that the auxiliary fixing frame 2 is firmly connected to the anchor body 1 during use, while being easily detachable when needed. When there are problems with the overall device, the auxiliary fixing frame 2 can be separated from the anchor body 1 and left underwater.

[0046] The built-in part 203 of the auxiliary fixing frame 2 fits against the inner wall of the suction inner cavity 101, and the external part 204 fits against the outer wall of the anchor body. This double-fitting structure effectively enhances the overall structural strength of the anchor body 1. In the deep-sea environment, external forces such as water flow and pressure are complex and variable. The auxiliary fixing frame 2 can help the anchor body 1 better disperse and resist these external forces, reducing the risk of deformation or damage to the anchor body 1 due to uneven stress, thereby improving the stability of the entire retrievable anchor on the seabed. The auxiliary fixing frame 2 is installed on one side of the opening 102 and does not interfere with the normal function of the suction inner cavity 101. Instead, it can, to a certain extent, guide the sediments into the suction inner cavity 101 and optimize the suction formation process. By reasonably designing the relative position and structure of the auxiliary fixing frame 2 and the opening 102, the suction can be more evenly distributed between the anchor body 1 and the seabed, further enhancing the anchoring effect and ensuring the stability of the deep-sea acoustic receiving mooring buoy during long-term use.

[0047] In some examples, according to their different locations, the active inner cavity 201 is correspondingly divided into a first cavity segment 206, a second cavity segment 207, and a third cavity segment 208. The second cavity segment 207 is inside the insertion part 205 and serves to connect the first cavity segment 206 and the third cavity segment 208. It ensures smooth communication with the two end cavity segments and also takes into account its own structural strength when connecting different parts of the auxiliary fixing frame 2, ensuring that the structural stability of the entire active inner cavity 201 is not affected in the complex deep-sea environment. The third cavity segment 208 is inside the external part 204, and one end of it far from the second cavity segment 207 communicates with the outside. This design provides a channel for the interaction between the swing claw 3 and the outside, i.e., the seabed environment. At the same time, the first outlet position 202 is set on the third cavity segment 208. Multiple first outlet positions 202 are arranged in an array on the external part 204. This array arrangement enables the swing claw 3 to extend from different positions to better adapt to the complex seabed topography and geological conditions and enhance the anchoring effect.

[0048] A number of swing claws 3 are provided. Each swing claw 3 corresponds to a first outlet position 202 respectively, and they are all swing-mounted in the active inner cavity 201 in the same way, specifically located at the corresponding first outlet position 202. This setting method increases the contact points with the seabed, making the attachment of the anchor body 1 to the seabed more stable. The multiple swing claws 3 cooperate with the first outlet positions 202 arranged in an array and can contact and attach to the seabed from different positions. This multi-point attachment method can better adapt to the complex seabed topography and geological conditions, such as uneven rock surfaces or soft sediment areas, compared with a single swing claw 3. By dispersing the attachment force, the fixation of the anchor body 1 to the seabed is made more stable, effectively resisting external forces such as water flow and tides in the deep sea, ensuring the stability of the deep-sea acoustic receiving mooring buoy during long-term observation, and reducing the risk of data errors or equipment damage caused by unstable anchoring. The internal part 203, the insertion part 205, and the external part 204 jointly have a connected active inner cavity 201. This integrated design makes full use of the space inside the auxiliary fixing frame 2, avoids waste of space, and makes the entire structure more compact and reasonable. Each cavity segment is designed according to its location and functional requirements, meeting both the movement space requirements of the swing claw 3 and the structural strength of the auxiliary fixing frame 2.

[0049] In some examples, the first slider 4 is integrally in a hollow plug-like structure, whose size is adapted to the internal space of the third cavity section 208 and can slide up and down within the third cavity section 208. The material of the first slider 4 can adapt to the deep-sea high-pressure and highly corrosive environment. On the first slider 4, a number of sliding parts 401 are arranged vertically. These sliding parts 401 correspond to the strip-shaped guide grooves 301 of the swing claw 3, and each sliding part 401 can be accurately inserted into the corresponding strip-shaped guide groove 301. The shape of each sliding part 401 fits the strip-shaped guide groove 301, usually in the shape of a cuboid or a cylinder, and its surface is also smooth. The sliding part 401 and the first slider 4 are of an integrally formed structure or are fixed together by a high-strength connection method to ensure that there is no loosening or falling off during the process of driving the swing claw 3 to swing. When the first slider 4 slides up and down within the third cavity section 208, the sliding part 401 moves accordingly and slides within the strip-shaped guide groove 301, thereby driving the swing claw 3 to swing around its transverse swing axis, realizing the action of the swing claw 3 extending into or retracting from the first exit position 202. The strip-shaped guide groove 301 of the swing claw 3 and the sliding part 401 of the first slider 4 are closely matched, providing accurate guidance and control for the swing of the swing claw 3. By controlling the up and down movement of the first slider 4, the swing angle and the extending and retracting actions of the swing claw 3 can be accurately controlled, enabling the swing claw 3 to accurately contact and grip the seabed, or smoothly disengage from the seabed during recovery, improving the accuracy and reliability of the anchoring and recovery operations. Since multiple swing claws 3 are connected to the sliding parts 401 of the first slider 4 through their respective strip-shaped guide grooves 301, when the first slider 4 slides, it can drive multiple swing claws 3 to act synchronously, ensuring the consistency of the actions of multiple swing claws 3. This synchronous action helps to make the gripping of the anchor body 1 on the seabed more uniform and stable, further enhancing the anchoring effect. The sliding of the first slider 4 within the third cavity section 208 and the actions of the swing claw 3 within the movable inner cavity 201 are carried out in a relatively enclosed space. This design helps to prevent seawater, seabed impurities, etc. from entering the movable inner cavity 201 and causing erosion or interference to the internal structure, further enhancing the protection performance and reliability of the device.

[0050] In some examples, the first link 6 is located within the second cavity section 207. One end of the first link 6 is hinged to the sliding plug member 5, and the other end is hinged to the second link 7. The length and shape of the first link 6 are designed according to the space of the second cavity section 207 and the requirements of the entire transmission structure. The horizontal movement of the sliding plug member 5 is converted into the movement of the second link 7, thereby affecting the lifting of the first sliding member 4. The limiting frame 8 is arranged within the second cavity section 207 and is a frame with a specific structure. It has an upper limiting portion 801 and a lower limiting portion 802. These two limiting portions are arranged opposite to each other, and a channel is formed in the middle. The first link 6 passes through this channel. The distance between the upper limiting portion 801 and the lower limiting portion 802 is slightly larger than the diameter of the first link 6, such that the first link 6 can move freely within the channel, but both sides are respectively in contact with the upper limiting portion 801 and the lower limiting portion 802, thereby restricting the displacement of the first link 6 in the direction perpendicular to its length and ensuring the stability and accuracy of the first link 6 during the transmission of motion.

[0051] Through the multi-stage link transmission structure composed of the sliding plug member 5, the first link 6, and the second link 7, the horizontal movement of the sliding plug member 5 can be accurately converted into the lifting movement of the first sliding member 4, and then the swinging of the swinging claw 3 can be precisely controlled. Compared with simple direct drive, this precise transmission method can more accurately control the extending and retracting actions of the swinging claw 3, improve the accuracy of anchoring and recovery operations, and ensure reliable anchoring and recovery in various complex seabed environments.

[0052] In some examples, the pressure groove 209 on the built-in portion 203 is a structure in the entire device that utilizes pressure changes to achieve specific functions. The pressure groove 209 is located on the side of the built-in portion 203 close to the suction inner cavity 101, and its opening faces the suction inner cavity 101. The shape of the pressure groove 209 is designed as a regular groove body to facilitate cooperation with the first sliding plate portion 501 of the sliding plug member 5 and to effectively sense and transmit pressure changes. The size of the pressure groove 209 is carefully calculated to ensure that the first sliding plate portion 501 can slide smoothly within the groove and to ensure that the formed pressure chamber 210 has a suitable space to achieve the accumulation and release of pressure. One end of the sliding plug member 5 extends out of the first sliding plate portion 501. The shape of the first sliding plate portion 501 matches that of the pressure groove 209, usually being a rectangular plate-like structure. Its outer contour fits closely with the inner wall of the pressure groove 209, but it can slide horizontally within the groove. The surface of the first sliding plate portion 501 is finely processed to reduce the friction with the inner wall of the pressure groove 209, while ensuring good sealing between the two to prevent gas leakage from the pressure chamber 210 and to ensure that the pressure change can be effectively transmitted to the sliding plug member 5.

[0053] When the recyclable anchor starts to sink, the suction inner cavity 101 has not yet filled with water, and the pressure cavity 210 at the pressure groove 209 is in its normal state before water intake. At this time, the sliding plug 5 remains relatively stationary, and all components of the entire device sink together with the anchor body 1 to resist the pressure of seawater and the impact of water flow. As the anchor body 1 sinks, seawater gradually enters the suction inner cavity 101. Since the pressure groove 209 opens towards the suction inner cavity 101, the pressure cavity 210 begins to be affected by the water pressure after water intake. The water pressure is transmitted through the pressure groove 209 into the pressure cavity 210, causing the pressure inside the pressure cavity 210 to gradually increase. Under the action of the water pressure, the first slide plate portion 501 begins to slide horizontally within the pressure groove 209, thereby driving the movement of the sliding plug 5. Through the transmission of the first connecting rod 6 and the second connecting rod 7, the first sliding member 4 generates a certain displacement within the third cavity section 208, but at this time, the swing claw 3 has not fully extended. When the anchor body 1 approaches the seabed, the suction device within the suction inner cavity 101 is activated to create a negative pressure within the suction inner cavity 101. At this time, the pressure cavity 210 at the pressure groove 209 enters the negative pressure state after suction, and the pressure inside the pressure cavity 210 rapidly decreases. A pressure difference is formed with the state of the other end of the movable inner cavity away from the pressure groove where there is no water intake and the state of continuously increasing water pressure. Under the action of this pressure difference, the first slide plate portion 501 further slides within the pressure groove 209, driving the sliding plug 5 to move more significantly. Through the transmission of the first connecting rod 6 and the second connecting rod 7, the first sliding member 4 slides downward within the third cavity section 208, and its sliding portion 401 slides within the strip-shaped guide groove 301 of the swing claw 3, driving the swing claw 3 to swing around the transverse swing axis and extend out of the first outlet position 202, making contact with and gripping the seabed, thus achieving the stable anchoring of the anchor body 1 on the seabed. The design of the pressure groove 209 and the pressure cavity 210 enables the device to sense the change in pressure within the suction inner cavity 101 and convert this pressure change into the movement of the sliding plug 5, thereby precisely controlling the opening and closing of the swing claw 3. This method of automatic control using pressure eliminates the need for additional complex external control equipment, simplifies the operation process, and improves the automation level of the device.

[0054] In some examples, multiple first outlet positions 202 are neatly arranged in the area between two blocking parts 402. This layout design is of great significance. When the first sliding member 4 moves up and down and slides within the third cavity section 208, the blocking parts 402 can effectively protect and guide the first outlet positions 202. On the one hand, the blocking parts 402 can prevent seawater and impurities from entering the third cavity section 208 from both ends of the first sliding member 4, avoiding erosion and interference to the internal structure. On the other hand, during the process of driving the swing claw 3 to move, the blocking parts 402 can guide the first sliding member 4 to maintain a linear motion, ensuring the matching accuracy between the sliding part 401 and the strip-shaped guide groove 301 of the swing claw 3, so as to accurately control the swinging action of the swing claw 3. The tight fit between the blocking parts 402 and the inner wall of the third cavity section 208 forms an effective sealing barrier, which can prevent seawater, seabed impurities, etc. from entering the movable inner cavity 201 from both ends of the first sliding member 4. This is crucial for protecting key components such as the swing claw 3 and the sliding part 401 in the movable inner cavity 201, avoiding erosion and wear of these components by impurities, extending the service life of the components, and reducing the maintenance cost.

[0055] In some examples, the protruding reinforcement part 502 and the sliding plug member 5 body are integrally designed and formed into a whole through casting or forging processes to ensure the connection strength between the two. The shape of the protruding reinforcement part 502 is usually a plurality of spaced-apart protruding structures, and these protrusions can be columnar, prismatic or other shapes suitable for fluid adhesion. For example, for cement with better fluidity, the protrusion height can be relatively low and the spacing can be slightly larger; while for a more viscous reinforcement material, the protrusions can be designed higher and the spacing smaller to enhance the adhesion effect. The protruding reinforcement part 502 provides additional attachment positions and skeleton support for the fluid reinforcement. Compared with a smooth surface, the protruding structure of the protruding reinforcement part 502 increases the contact area with the fluid reinforcement, enabling the reinforcement to be more firmly combined with the sliding plug member 5 after solidification, thereby enhancing the overall structural strength of the suction anchor. This reinforcement effect helps the suction anchor withstand greater external forces in the complex deep-sea environment, such as water flow impact and seabed geological movements, ensuring the stable operation of the deep-sea acoustic receiving mooring buoy. The spaced-apart design of the protruding reinforcement part 502 makes the distribution of the fluid reinforcement in the suction inner cavity 101 more uniform. During the pouring process, the fluid reinforcement will flow around the protruding reinforcement part 502 and fill the gaps, avoiding the situation of insufficient or excessive local reinforcement, thereby improving the uniformity and stability of the entire suction anchor reinforcement.

[0056] In some examples, the mounting ring 9 is generally made of a high-strength corrosion-resistant metal material, and its shape is adapted to the opening 102, usually being an annular structure. It is installed on the opening 102 by a detachable method such as threaded connection, and the connection part is well sealed to prevent seawater from seeping in. The auxiliary fixing frame 2 is arranged on the mounting ring 9. The detachable design of the mounting ring 9 facilitates the individual repair and replacement of the auxiliary fixing frame 2 or the opening 102 of the anchor body 1 when needed, reduces the maintenance cost, and improves the work efficiency.

[0057] In some examples, multiple auxiliary fixing frames 2 are arranged circumferentially on the mounting ring 9, enabling the swing claws 3 to contact and grip the seabed from multiple directions. Compared with a single auxiliary fixing frame, the stability of the anchor body 1 on the seabed is greatly enhanced. This layout can better resist external forces such as water flow and tides from different directions, ensuring the stability of the deep-sea acoustic receiving buoy in a complex marine environment.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A retrievable anchor installed on a deep-sea acoustic receiving buoy, used to anchor on the seabed after sinking, characterized in that: include: Anchor body (1); an auxiliary fixing frame (2), the auxiliary fixing frame (2) being arranged on the anchor body (1), the auxiliary fixing frame (2) having a movable inner cavity (201), the auxiliary fixing frame (2) being provided with a first outlet position (202) penetrating along the radial direction of the anchor body (1), the first outlet position (202) facing one side of the outer wall of the anchor body (1); A swinging claw (3), the swinging claw (3) being swingably disposed in the movable inner cavity (201) and being located at the first outlet position (202), the swinging axis of the swinging claw (3) being along the tangent direction of the anchor body (1), the swinging claw (3) being a fan-shaped piece, the swinging claw (3) being configured to extend out or retract to the first outlet position (202) after swinging, and to always keep blocking the first outlet position (202) after swinging; The anchor body (1) has a suction inner cavity (101), the lower end of the suction inner cavity (101) has an opening (102), the opening (102) faces the sinking direction of the anchor body (1), and the auxiliary fixing frame (2) is detachably arranged on one side of the opening (102); the auxiliary fixing frame (2) has an internal portion (203), an external portion (204) and an insertion portion (205), the internal portion (203) is in contact with the inner wall of the suction inner cavity (101), the external portion (204) is in contact with the outer wall of the anchor body (1), and the internal portion (203) and the external portion (204) are respectively connected to two ends of the insertion portion (205); The built-in part (203), the inserted part (205) and the external part (204) have a connected active inner cavity (201) inside, and the active inner cavity (201) is divided into a first cavity section (206), a second cavity section (207) and a third cavity section (208). The first cavity section (206) is located in the built-in part (203), the second cavity section (207) is located in the inserted part (205), and the third cavity section (208) is located in the external part (204). The first cavity section (206) and the third cavity section (208) both extend along the axial direction of the anchor body (1). One end of the third cavity section (208) away from the second cavity section (207) is connected to the outside, and the first outlet position (202) is located in the third cavity section (208); There are a plurality of the first exit positions (202), which are arranged in an array on the external portion (204); there are also a plurality of the swing claws (3), and the plurality of the swing claws (3) are arranged in a one-to-one correspondence with the plurality of the first exit positions (202); The swing claw (3) has a strip guide groove (301) extending therethrough, and the strip guide groove (301) is located on the end surface of the swing claw (3) close to the anchor body (1); A first sliding member (4), the first sliding member (4) being arranged in a lifting and sliding manner in the third cavity section (208), the first sliding member (4) having a plurality of sliding parts (401) arranged vertically, the plurality of sliding parts (401) respectively passing through the strip guide groove (301) and slidably cooperating with the strip guide groove (301), the sliding parts (401) being able to drive the swing claw (3) to swing and extend into the first exit position (202) or to retract to the first exit position (202) under the action of the first sliding member (4); A sliding plug (5), the sliding plug (5) being slidably disposed on the built-in portion (203); a first connecting rod (6) and a second connecting rod (7), wherein the first connecting rod (6) and the second connecting rod (7) are both located in the second cavity section (207), one end of the first connecting rod (6) is hinged to the sliding plug (5); one end of the second connecting rod (7) is hinged to the first connecting rod (6), and the other end is hinged to the first sliding member (4); The built-in portion (203) further comprises a pressure groove (209), the opening of the pressure groove (209) faces the suction inner cavity (101), one end of the sliding plug (5) comprises a first slide portion (501), the first slide portion (501) is horizontally slidably arranged in the pressure groove (209), and a pressure cavity (210) is formed between the first slide portion (501) and the inner wall of the pressure groove (209).

2. A retrievable anchor installed on a deep-sea acoustic receiving buoy according to claim 1, characterized in that: The retrievable anchor installed on the deep-sea acoustic receiving buoy also includes: A limit frame (8), wherein the limit frame (8) is arranged in the second cavity section (207), the limit frame (8) has an upper limit portion (801) and a lower limit portion (802), the first connecting rod (6) passes between the upper limit portion (801) and the lower limit portion (802), and two sides of the first connecting rod (6) are respectively in contact with the upper limit portion (801) and the lower limit portion (802), and the sliding plug (5) is configured to, after sliding horizontally, drive the first sliding member (4) to slide up and down through the first connecting rod (6) and the second connecting rod (7), thereby driving the swing claw (3) to swing.

3. The retrievable anchor installed on a deep-sea acoustic receiving buoy according to claim 1, characterized in that: The first sliding member (4) has blocking portions (402) at the upper and lower ends respectively, and the plurality of first outlet positions (202) are located between the two blocking portions (402).

4. The retrievable anchor installed on a deep-sea acoustic receiving buoy according to claim 1, characterized in that: The sliding plug (5) has a protruding reinforcement portion (502) on one side close to the suction inner cavity (101).

5. The retrievable anchor installed on a deep-sea acoustic receiving buoy according to claim 1, characterized in that: The retrievable anchor installed on the deep-sea acoustic receiving buoy also includes: A mounting ring (9), the mounting ring (9) being detachably arranged on the opening portion (102), and the auxiliary fixing frame (2) being arranged on the mounting ring (9).

6. A retrievable anchor installed on a deep-sea acoustic receiving buoy according to claim 5, characterized in that: There are a plurality of auxiliary fixing frames (2), and the plurality of auxiliary fixing frames (2) are circumferentially arranged on the mounting ring (9).

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