Recyclable anchor installed on deep sea acoustic receiving subsurface buoy

Abstract

The invention relates to the technical field of marine anchoring equipment, and provides a recoverable anchor for mounting a deep sea acoustic receiving subsurface buoy, which comprises an anchor body, the auxiliary fixing frame is arranged on the anchor body, the auxiliary fixing frame is provided with a movable inner cavity, the movable inner cavity is provided with a first outlet position, and the first outlet position faces one side of the outer wall of the anchor body; the swing clamping jaw is arranged in the movable inner cavity in a swing mode and located at the first outlet position, a swing shaft of the swing clamping jaw is in the transverse direction, the swing clamping jaw is a fan-shaped piece, and the swing clamping jaw is configured to stretch out of or return to the first outlet position after swinging and always keep blocking the first outlet position after swinging. According to the technical scheme, the technical problem that in the prior art, an anchor body of a suction anchor is poor in installation efficiency and stability is solved.

Description

Technical Field

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

[0002] Deep-sea acoustic receiving buoys play a key role in the fields of ocean observation and earthquake monitoring. Their stable installation is inseparable from reliable anchoring devices. At present, the patent application publication number CN115924001B proposes a suction anchor reinforcement device, a suction anchor and a suction anchor installation method. The structure uses mechanical locking and counterweight blocks to achieve the fixation of the anchor body. However, in practical applications, this structure has obvious shortcomings.

[0003] First, there will be great resistance when operating the reinforcement structure. This patent relies on the interaction between the mechanical claw and the seabed bedrock to complete the anchoring. However, due to the complex deep-sea environment and the diverse seabed geological conditions, the claws are easily trapped in soft sediments or stuck in irregular rock gaps. This will not only make it difficult to deploy the claws, but also make the sinking process of the anchor body unsmooth. Moreover, when recovering the anchor body, the friction between the claws and the sediment is large, and additional power is required to pull it out of the seabed, which undoubtedly increases the difficulty and cost of operation. Secondly, the structure will cause the mixing of mud and sand. During the sinking and fixing process of the anchor body, the movement of the mechanical claws will disturb the surrounding mud and sand. These disturbed mud and sand will enter the internal structure of the anchor body, such as the locking mechanism and the counterweight cavity, with the water flow. The mixing of mud and sand may cause the locking mechanism to fail, affecting the fixing effect of the anchor body; at the same time, it will also increase the weight of the counterweight cavity, change the buoyancy balance of the anchor body, and thus affect the normal operation of the buoy. In addition, mud and sand may also cause wear on the anti-corrosion layer of the anchor body and shorten the service life of the anchor body.

[0004] In summary, the existing retrievable anchor structure has obvious defects in operation reinforcement and anti-sediment mixing, and needs to be improved. The present invention aims to provide a new retrievable anchor installed on a deep-sea acoustic receiving 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] In order to overcome the above-mentioned defects, an embodiment of the present invention provides a retrievable anchor installed on a deep-sea acoustic receiving buoy, which is used to anchor on the seabed after sinking, comprising: Anchor body; An auxiliary fixing frame, the auxiliary fixing frame is arranged on the anchor body, the auxiliary fixing frame has an active inner cavity, and the auxiliary fixing frame is provided with a first outlet position penetrating along the radial direction of the anchor body, the first outlet position faces one side of the outer wall of the anchor body; A swing claw, the swing claw 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 fan-shaped piece, and the swing claw is configured to extend or retract to the first exit position after swinging, and always keep the first exit position blocked after swinging.

[0006] For example, at least one embodiment of the present invention provides a retrievable anchor installed on a deep-sea acoustic receiving buoy, wherein the anchor body has a suction inner cavity, the lower end of the suction inner cavity has an opening, the opening faces the sinking direction of the anchor body, and the auxiliary fixing frame is detachably arranged on one side of the opening; the auxiliary fixing frame has an internal portion, an external portion and an insertion portion, the internal portion is in contact with the inner wall of the suction inner cavity, the external portion is in contact with the outer wall of the anchor body, and the internal portion and the external portion are respectively connected to the two ends of the insertion portion.

[0007] For example, at least one embodiment of the present invention provides a retrievable anchor installed on a deep-sea acoustic receiving buoy, wherein the built-in part, the inserted part and the external part have a connected active inner cavity, and the active inner cavity is divided into a first cavity segment, a second cavity segment and a third cavity segment, the first cavity segment is located in the built-in part, the second cavity segment is located in the inserted part, and the third cavity segment is located in the external part, the first cavity segment and the third cavity segment both extend along the axial direction of the anchor body, an end of the third cavity segment away from the second cavity segment is connected to the outside, and the first outlet is located in the third cavity segment; There are a plurality of first exit positions arranged in an array on the external portion, and there are a plurality of swing claws, which are arranged in a one-to-one correspondence with a plurality of first exit positions.

[0008] For example, at least one embodiment of the present invention provides a retrievable anchor installed on a deep-sea acoustic receiving buoy, wherein the swing claw has a strip guide groove provided therethrough, and the strip guide groove is located on the end surface of the swing claw close to the anchor body, and further comprises: The first sliding member is lifted and slidably arranged in the third cavity section, the first sliding member has a plurality of sliding parts arranged vertically, the plurality of sliding parts respectively penetrate the strip guide groove and slideably cooperate with the strip guide groove, and the sliding part can drive the swing claw to swing into the first exit position or retract to the first exit position under the action of the first sliding member.

[0009] For example, at least one embodiment of the present invention provides a retrievable anchor installed on a deep-sea acoustic receiving buoy, further comprising: A sliding plug, the sliding plug being slidably disposed on the built-in portion; A first connecting rod and a second connecting rod, wherein the first connecting rod and the second connecting rod are both located in the second cavity section, one end of the first connecting rod is hinged to the sliding plug; 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; The limit frame is arranged in the second cavity section, and the limit frame has an upper limit portion and a lower limit portion. The first connecting rod passes between the upper limit portion and the lower limit portion, and the two sides of the first connecting rod are respectively abutted against the upper limit portion and the lower limit portion. The sliding plug is configured to, after horizontal sliding, drive the sliding plug to rise and fall and slide through the first connecting rod and the second connecting rod, thereby driving the swing claw to swing.

[0010] For example, at least one embodiment of the present invention provides a retrievable anchor installed on a deep-sea acoustic receiving buoy. The built-in part also has a pressure groove, the opening of the pressure groove faces the suction inner cavity, and one end of the sliding plug has a first slide plate portion, which is horizontally slidably arranged in the pressure groove, and a pressure cavity is formed between the first slide plate portion and the inner wall of the pressure groove.

[0011] For example, in at least one embodiment of the present invention, a recoverable anchor installed on a deep-sea acoustic receiving buoy is provided, wherein the upper and lower ends of the first sliding member respectively have sealing parts, and the plurality of first outlet positions are all located between the two sealing parts.

[0012] For example, at least one embodiment of the present invention provides a recoverable anchor installed on a deep-sea acoustic receiving buoy, wherein the sliding plug has a protruding reinforcement portion on one side close to the suction inner cavity.

[0013] For example, at least one embodiment of the present invention provides a retrievable anchor installed on a deep-sea acoustic receiving buoy, further comprising: The mounting ring is detachably arranged on the opening portion, and the auxiliary fixing frame is arranged on the mounting ring.

[0014] For example, at least one embodiment of the present invention provides a recoverable anchor installed on a deep-sea acoustic receiving buoy, wherein there are a plurality of auxiliary fixing frames, and the plurality of auxiliary fixing frames are arranged circumferentially on the mounting ring.

[0015] The beneficial effects of the embodiments of the present invention are: In the present invention, the suction anchor principle is combined, and the stability of the anchor body on the seabed is greatly enhanced through the combined effect of the swing claw's grip on the seabed and suction. Compared with the traditional anchoring method that relies solely on suction or simple mechanical claws, this dual fixing 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 buoy always remains stable during long-term observations, and reducing the risk of data errors or equipment damage caused by unstable anchoring. The design of the swing claw always blocking the first outlet position effectively prevents seawater and seabed impurities from entering the active inner cavity during the sinking, anchoring and recovery process, and avoids the erosion and interference of impurities on the mechanical structure of the swing claw. This not only extends the service life of the swing claw and reduces maintenance costs, but also ensures that the swing claw can maintain good working performance every time it is used, improving the reliability and stability of the entire recyclable anchor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some exemplary embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on the contents of the exemplary embodiments of the present invention and these drawings without creative work.

[0017] Figure 1 This is a schematic structural diagram of a retrievable anchor installed on a deep-sea acoustic receiving buoy in one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the internal structure of a retrievable anchor installed on a deep-sea acoustic receiving buoy in an embodiment; Figure 3 for Figure 2 A schematic diagram of the partially enlarged structure of the middle B part; Figure 4 for Figure 2 A partial enlarged structural diagram of the middle part; Figure 5 for Figure 1 A schematic diagram of the structure of the auxiliary fixing frame in the embodiment of FIG. Figure 6 for Figure 5 Schematic diagram of the partially enlarged structure of part C in the middle.

[0018] In the figure: anchor body-1, suction inner cavity-101, opening part-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 guide groove-301, first sliding part-4, sliding part-401, sealing part-402, sliding plug-5, first slide plate part-501, protruding reinforcement part-502, first connecting rod-6, second connecting rod-7, limit frame-8, upper limit part-801, lower limit part-802, mounting ring-9. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0020] In order to simplify 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, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0021] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0023] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, 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 should not be understood as a limitation on the present invention.

[0024] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] like Figure 1 to Figure 6 As shown, it shows a recoverable anchor installed on a deep-sea acoustic receiving buoy in one embodiment of the present invention, which is used to anchor on the seabed after sinking.

[0026] For example, the anchor body 1 is the main structure of the entire recyclable anchor, and its design fully considers the stability and functionality in the deep sea environment. It is based on the basic principle of the traditional suction anchor, and the overall shape is relatively regular, such as a cylinder or a prism. The bottom is usually designed to be easy to insert into the seabed sediment, such as a sharp cone or wedge, so that under its own gravity and possible suction, it can sink to the seabed more smoothly and form a preliminary fixation with the seabed ground. A special space is provided inside the anchor body 1, which can be used to accommodate various auxiliary equipment or devices, such as a pressure balance system, a suction generating 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 high pressure and water flow impact in the deep sea, 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 fixed to the anchor body 1 through a reliable connection method to ensure that the two always remain relatively stable and do not move in 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. The active inner cavity 201 has a first exit position 202. This first exit position 202 faces one side of the outer wall of the anchor body 1, providing a channel for the swing claw 3 to establish contact with the external seabed environment. The edge of the first exit position 202 is polished and processed to ensure smoothness and flatness, so as to avoid unnecessary wear and tear when the swing claw 3 enters and exits the active inner cavity 201, thereby affecting its normal operation. During the entire working process, the swing claw 3 always keeps the first exit position 202 blocked, whether in the extended or retracted state. In the extended state, blocking the first exit position 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 swing claw 3, and ensuring the reliability of its gripping action; in the retracted state, the first exit position 202 is also blocked, which can maintain the relative stability of the internal environment of the active inner cavity 201 and avoid potential damage to the swing claw 3 due to changes in the external environment.

[0027] Before the retrievable anchor is put into use, it is necessary to first ensure that the swing claw 3 is in the initial state of being in the active inner cavity 201 and blocking the first outlet position 202. At the same time, various equipment inside the anchor body 1, such as the suction generating device and the pressure balance system, are comprehensively inspected and debugged to ensure that they can operate normally. The retrievable anchor is accurately connected to the deep-sea acoustic receiving buoy, and the comprehensive debugging and detection of all equipment are completed to ensure that the entire system can work stably during the sinking process. The retrievable anchor begins to sink together with the deep-sea acoustic receiving buoy. 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. In this process, the swing claw 3 is always stably located 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, balancing the internal and external pressures to ensure the stability of the anchor body structure. When the recyclable anchor approaches the seabed, the principle of suction anchor is first used to form negative pressure between the bottom of the anchor body and the seabed sediment through the suction generating device inside the anchor body 1, so that the anchor body 1 is initially fixed to the seabed. Then, the swing claw 3 is driven by the control mechanism to swing around the lateral swing axis. The swing claw 3 gradually extends from the active inner cavity 201 to the first exit position 202. As the swing angle increases, the fan-shaped swing claw 3 gradually contacts and embeds with the seabed sediment or rock. When the swing claw 3 is fully in contact with the seabed and reaches a suitable gripping angle and depth, the drive of the swing claw 3 is stopped. At this time, the swing claw 3 is tightly attached to the seabed, and together with the suction effect, the anchor body 1 is firmly anchored on the seabed, providing stable support for the deep-sea acoustic receiving buoy.

[0028] This scheme combines the suction anchor principle, and through the combined effect of the swing claw 3 and the grip of the seabed and the suction, the stability of the anchor body 1 on the seabed is greatly enhanced. Compared with the traditional anchoring method that relies solely on suction or simple mechanical claws, this dual fixing mechanism can better resist the influence of factors such as complex deep-sea water flow and geological changes on the anchoring effect, ensuring that the deep-sea acoustic receiving buoy always remains stable during long-term observation, and reducing the risk of data error or equipment damage caused by unstable anchoring. The design of the swing claw 3 always blocking the first outlet position 202 effectively prevents seawater and seabed impurities from entering the active inner cavity 201 during the sinking, anchoring and recovery process, 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 and reduces maintenance costs, but also ensures that the swing claw 3 can maintain good working performance every time it is used, and improves the reliability and stability of the entire recyclable anchor.

[0029] In some examples, the anchor body 1 serves as the core part of the entire device, and the suction cavity 101 inside it is the key structure for realizing the suction anchoring function. The shape of the suction cavity 101 is usually a regular cavity, such as a cylinder or a prism, to facilitate manufacturing and the arrangement of internal equipment. The opening 102 is located at one end of the suction cavity 101, precisely facing the sinking direction of the anchor body 1. This design allows the sediment on the seabed to enter the opening 102 more easily during the sinking process, and when suction is subsequently formed, 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, which on the one hand guides the sediment to enter, and on the other hand prevents 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 facilitates the installation, maintenance and replacement of the equipment. In practical applications, threaded connection is mainly used, and magnetic connection and other methods can also be used to ensure that the auxiliary fixing frame 2 remains firmly connected to the anchor body 1 during use, while being easy to disassemble when needed. When problems occur with the overall device, the auxiliary fixing frame 2 can also be detached from the anchor body 1 and left underwater.

[0030] The built-in part 203 of the auxiliary fixing frame 2 is fitted with the inner wall of the suction cavity 101, and the external part 204 is fitted with 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, the external forces such as water flow and pressure are complex and changeable. The auxiliary fixing frame 2 can help the anchor body 1 to better disperse and resist these external forces, reduce the risk of deformation or damage of the anchor body 1 due to uneven force, thereby improving the stability of the entire recyclable anchor on the seabed. The auxiliary fixing frame 2 is installed on one side of the opening 102, which will not interfere with the normal function of the suction cavity 101. On the contrary, it can guide the sediment into the suction cavity 101 to a certain extent, and optimize the process of suction formation. 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 that the deep-sea acoustic receiving buoy remains stable during long-term use.

[0031] In some examples, the active inner cavity 201 is divided into a first cavity section 206, a second cavity section 207 and a third cavity section 208 according to different locations. The second cavity section 207 is located inside the insertion portion 205 and serves to connect the first cavity section 206 and the third cavity section 208. It ensures smooth communication with the cavity sections at both ends, and 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 section 208 is located inside the external portion 204, and its end away from the second cavity section 207 is connected to the outside world. This design provides a channel for the interaction between the swing claw 3 and the outside world, that is, the seabed environment. At the same time, the first exit position 202 is set on the third cavity section 208. Multiple first exit positions 202 are arranged in an array on the external portion 204. This array arrangement enables the swing claw 3 to extend from different positions to better adapt to the complex terrain and geological conditions of the seabed and enhance the anchoring effect.

[0032] There are several swing claws 3. Each swing claw 3 corresponds to a first exit position 202, and they are all swing-set in the movable inner cavity 201 in the same way, specifically at the corresponding first exit position 202. This setting method increases the contact points with the seabed, making the anchor body 1 more firmly attached to the seabed. Multiple swing claws 3 cooperate with the first exit positions 202 arranged in an array, and can contact and grasp the seabed from different positions. Compared with a single swing claw 3, this multi-point grasping method can better adapt to the complex terrain and geological conditions of the seabed, such as uneven rock surfaces or soft sediment areas. By dispersing the grasping force, the anchor body 1 is more firmly fixed on the seabed, effectively resisting the external forces such as water currents and tides in the deep sea, ensuring the stability of the deep-sea acoustic receiving buoy during long-term observations, and reducing the risk of data errors or equipment damage caused by unstable anchoring. The internal parts 203, the insertion parts 205 and the external parts 204 have a connected active inner cavity 201. This integrated design makes full use of the space inside the auxiliary fixing frame 2, avoids space waste, and makes the entire structure more compact and reasonable. Each cavity segment is designed according to the location and functional requirements, which not only meets the activity space requirements of the swing claw 3, but also ensures the structural strength of the auxiliary fixing frame 2.

[0033] In some examples, the first sliding member 4 is a hollow plug-shaped structure as a whole, and its size is adapted to the internal space of the third cavity section 208, and it can be lifted and slid in the third cavity section 208. The material of the first sliding member 4 can adapt to the high-pressure and high-corrosion environment of the deep sea. On the first sliding member 4, a number of sliding parts 401 are arranged vertically. These sliding parts 401 correspond to the strip guide grooves 301 of the swing claw 3, and each sliding part 401 can be accurately inserted into the corresponding strip guide groove 301. The shape of each sliding part 401 matches the strip guide groove 301, usually in the shape of a cuboid or a cylinder, and its surface is also smoothed. The sliding part 401 and the first sliding member 4 are an integrally formed structure or fixed together by a high-strength connection method to ensure that there will be no loosening or falling off during the process of driving the swing claw 3 to swing. When the first sliding member 4 is lifted and slid in the third cavity section 208, the sliding part 401 moves accordingly and slides in the strip guide groove 301, thereby driving the swing claw 3 to swing around its transverse swing axis, and realizing the movement of the swing claw 3 extending into or withdrawing from the first exit position 202. The strip guide groove 301 of the swing claw 3 is closely matched with the sliding part 401 of the first sliding member 4, providing precise guidance and control for the swing of the swing claw 3. By controlling the lifting and lowering of the first sliding member 4, the swing angle and the extending and withdrawing movements of the swing claw 3 can be accurately controlled, so that the swing claw 3 can accurately contact and grasp the seabed, or smoothly detach from the seabed during recovery, thereby improving the accuracy and reliability of the anchoring and recovery operations. Since multiple swing claws 3 are connected to the sliding part 401 of the first sliding member 4 through their respective strip guide grooves 301, when the first sliding member 4 slides, it can drive multiple swing claws 3 to move synchronously, thereby ensuring the consistency of the movements of multiple swing claws 3. This synchronous action helps to make the anchor body 1 more evenly and firmly attached to the seabed, further enhancing the anchoring effect. The sliding of the first sliding member 4 in the third cavity section 208 and the movement of the swing claw 3 in the active inner cavity 201 are all carried out in a relatively closed space. This design helps to prevent seawater, seabed impurities, etc. from entering the active inner cavity 201 and causing erosion or interference to the internal structure, further enhancing the protection performance and reliability of the device.

[0034] In some examples, the first connecting rod 6 is located in the second cavity section 207, one end of which is hinged to the sliding plug 5, and the other end is hinged to the second connecting rod 7. The length and shape of the first connecting rod 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 5 is converted into the movement of the second connecting rod 7, thereby affecting the lifting and lowering of the first sliding member 4. The limit frame 8 is arranged in the second cavity section 207 and is a frame with a specific structure. It has an upper limit portion 801 and a lower limit portion 802, which are arranged oppositely to form a channel in the middle, and the first connecting rod 6 passes through this channel. The spacing between the upper limit portion 801 and the lower limit portion 802 is slightly larger than the diameter of the first connecting rod 6, so that the first connecting rod 6 can move freely in the channel, but the two sides are respectively abutted against the upper limit portion 801 and the lower limit portion 802, thereby limiting the displacement of the first connecting rod 6 in the direction perpendicular to its length, ensuring the stability and accuracy of the first connecting rod 6 when transmitting motion.

[0035] Through the multi-stage connecting rod transmission structure composed of the sliding plug 5, the first connecting rod 6 and the second connecting rod 7, the horizontal movement of the sliding plug 5 can be accurately converted into the lifting movement of the first sliding member 4, thereby accurately controlling the swing of the swing claw 3. Compared with simple direct drive, this precise transmission method can more accurately control the extension and retraction of the swing claw 3, improve the accuracy of anchoring and recovery operations, and ensure reliable anchoring and recovery in various complex seabed environments.

[0036] In some examples, the pressure groove 209 on the built-in part 203 is a structure in the entire device that uses pressure changes to achieve specific functions. The pressure groove 209 is located on the side of the built-in part 203 close to the suction cavity 101, and its opening faces the suction cavity 101. The shape of the pressure groove 209 is designed to be a regular groove body, so as to cooperate with the first slide portion 501 of the sliding plug 5, and can effectively sense and transmit pressure changes. The size of the pressure groove 209 is carefully calculated to ensure that the first slide portion 501 can slide smoothly in the groove, and to ensure that the formed pressure cavity 210 has a suitable space to achieve pressure accumulation and release. The first slide portion 501 extends from one end of the sliding plug 5. The shape of the first slide portion 501 matches the pressure groove 209, and is usually a rectangular plate-like structure. Its outer contour fits tightly with the inner wall of the pressure groove 209, but can slide horizontally in the groove. The surface of the first slide 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 in the pressure chamber 210 and ensure that pressure changes can be effectively transmitted to the sliding plug 5 .

[0037] When the recyclable anchor begins to sink, the suction cavity 101 has not yet been filled with water, and the pressure cavity 210 at the pressure groove 209 is in a normal state before water is filled. At this time, the sliding plug 5 remains relatively still, and the 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 cavity 101. Since the pressure groove 209 opens toward the suction cavity 101, the pressure cavity 210 begins to be affected by the water pressure after the water enters. The water pressure is transmitted to the pressure cavity 210 through the pressure groove 209, so that the pressure in the pressure cavity 210 gradually increases. Under the action of the water pressure, the first slide plate 501 begins to slide horizontally in the pressure groove 209, thereby driving the sliding plug 5 to move. The sliding plug 5 is driven by the first connecting rod 6 and the second connecting rod 7, so that the first sliding member 4 produces a certain displacement in the third cavity section 208, but at this time the swing claw 3 has not been fully extended. When the anchor body 1 approaches the seabed, the suction device in the suction cavity 101 is started to form a negative pressure in the suction cavity 101. At this time, the pressure cavity 210 at the pressure groove 209 enters a negative pressure state after suction, and the pressure in the pressure cavity 210 decreases rapidly. A pressure difference is formed between the other end of the active cavity away from the pressure groove and the non-water state and the continuously increasing water pressure state. Under the action of this pressure difference, the first slide portion 501 further slides in 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 in the third cavity section 208, and its sliding portion 401 slides in the strip 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, contacting and grasping the seabed, and realizing the stable anchoring of the anchor body 1 on the seabed. The design of the pressure groove 209 and the pressure chamber 210 enables the device to sense the pressure change in the suction chamber 101 and convert the pressure change into the movement of the sliding plug 5, thereby accurately controlling the opening and closing of the swing claw 3. This automatic control method using pressure does not require additional complex external control equipment, simplifies the operation process, and improves the automation level of the device.

[0038] 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, as it enables the blocking part 402 to effectively protect and guide the first outlet position 202 when the first sliding member 4 is lifted and slid in the third cavity section 208. On the one hand, the blocking part 402 can prevent seawater and impurities from entering the third cavity section 208 from both ends of the first sliding member 4, thereby avoiding erosion and interference with the internal structure; on the other hand, in the process of driving the swing claw 3 to move, the blocking part 402 can guide the first sliding member 4 to maintain linear motion, ensuring the matching accuracy between the sliding part 401 and the strip guide groove 301 of the swing claw 3, thereby accurately controlling the swinging motion of the swing claw 3. The close fit between the blocking part 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 active inner cavity 201 from both ends of the first sliding member 4. This is very important for protecting key components such as the swing claw 3 and the sliding part 401 in the active inner cavity 201, avoiding erosion and wear of these components by impurities, extending the service life of the components and reducing maintenance costs.

[0039] In some examples, the protruding reinforcement part 502 and the main body of the sliding plug 5 are designed in an integrated manner and formed into a whole through a casting or forging process to ensure the connection strength between the two. The shape of the protruding reinforcement part 502 is usually a plurality of spaced protrusion structures, which can be columnar, prism-shaped or other shapes suitable for fluid attachment. For example, for cement with good fluidity, the protrusion height can be relatively low and the spacing can be slightly larger; while for reinforcement materials with greater viscosity, the protrusions can be designed to be higher and the spacing can be smaller to enhance the attachment effect. The protruding reinforcement part 502 provides additional attachment positions and skeleton support for fluid reinforcements. Compared with a smooth surface, the protruding structure of the protruding reinforcement part 502 increases the contact area with the fluid reinforcement, so that the reinforcement can be more firmly combined with the sliding plug 5 after solidification, thereby enhancing the overall structural strength of the suction anchor. This reinforcement effect helps the suction anchor to withstand greater external forces in complex deep-sea environments, such as water flow impact, seabed geological movement, etc., to ensure the stable operation of deep-sea acoustic receiving buoys. The interval distribution design of the protruding reinforcement part 502 makes the distribution of the fluid reinforcement more uniform in the suction inner cavity 101. During the infusion process, the fluid reinforcement will flow around the protruding reinforcement part 502 and fill the gap, avoiding the situation of insufficient or excessive local reinforcement, thereby improving the uniformity and stability of the entire suction anchor reinforcement.

[0040] In some examples, the mounting ring 9 is usually made of high-strength corrosion-resistant metal material, and its shape is adapted to the opening 102, and it is generally 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 infiltrating. The auxiliary fixing frame 2 is arranged on the mounting ring 9. The detachable design of the mounting ring 9 facilitates the separate maintenance and replacement of the auxiliary fixing frame 2 or the opening 102 of the anchor body 1 when necessary, thereby reducing maintenance costs and improving work efficiency.

[0041] In some examples, multiple auxiliary fixing frames 2 are arranged circumferentially on the mounting ring 9, so that the swing claw 3 can contact and grasp the seabed from multiple directions, which greatly enhances the stability of the anchor body 1 on the seabed compared to a single auxiliary fixing frame. This layout can better resist external forces such as water flow and tide from different directions, ensuring that the deep-sea acoustic receiving buoy remains stable in a complex marine environment.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in 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) is swingably arranged in the movable inner cavity (201) and is located at the first outlet position (202), the axial direction of the swing axis of the swinging claw (3) is along the tangential direction of the side wall of the anchor body (1), the swinging claw (3) is a fan-shaped piece, and the swinging claw (3) is configured to extend or retract to the first outlet position (202) after swinging, and always keep blocking the first outlet position (202) after swinging.

2. A retrievable anchor installed on a deep-sea acoustic receiving buoy according to claim 1, characterized in that: 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).

3. The retrievable anchor installed on a deep-sea acoustic receiving buoy according to claim 2, characterized in that: 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) 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).

4. A retrievable anchor installed on a deep-sea acoustic receiving buoy according to claim 3, characterized in that: The swing claw (3) has a strip guide groove (301) extending therethrough, the strip guide groove (301) being located on the end surface of the swing claw (3) close to the anchor body (1), and further comprising: A first sliding member (4), the first sliding member (4) is arranged in the third cavity section (208) in a lifting and sliding manner, the first sliding member (4) has a plurality of sliding parts (401) arranged vertically, the plurality of sliding parts (401) respectively penetrate the strip guide groove (301) and slidably cooperate with the strip guide groove (301), and the sliding parts (401) can drive the swing claw (3) to swing into the first exit position (202) or retract to the first exit position (202) under the action of the first sliding member (4).

5. A retrievable anchor installed on a deep-sea acoustic receiving buoy according to claim 4, characterized in that: Also includes: 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); 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 sliding plug (5) 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.

6. A retrievable anchor installed on a deep-sea acoustic receiving buoy according to claim 5, characterized in that: 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).

7. The retrievable anchor installed on a deep-sea acoustic receiving buoy according to claim 4, 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).

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

9. The retrievable anchor installed on a deep-sea acoustic receiving buoy according to claim 2, characterized in that: 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).

10. A retrievable anchor installed on a deep-sea acoustic receiving buoy according to claim 9, 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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