An unmanned device for seabed exploration

Abstract

This invention relates to an unmanned device for seabed exploration, belonging to the technical field of exploration equipment. It includes a sinking frame and exploration equipment, with a release mechanism on the top of the exploration equipment. The release mechanism comprises a housing, a ring-shaped steel rope, and a fusion circuit electrically connected to the ring-shaped steel rope. The ring-shaped steel rope is located inside the housing, and multiple first connection holes are evenly distributed on the outer periphery of the housing. Multiple second connection holes, corresponding to the first connection holes, are evenly distributed on the outer periphery of the sinking frame. The lower end of a pull rope is fixedly connected to a second connection hole, and the upper end of the pull rope passes through a first connection hole and is fixedly connected to the ring-shaped steel rope. By using a ring-shaped steel rope, the problem of incomplete wire melting in existing technologies is solved. When any part of the ring-shaped steel rope melts due to current, all pull ropes connected to the ring-shaped steel rope will be released simultaneously, thereby achieving smooth separation of the exploration equipment from the sinking frame and effectively avoiding the risk of release failure due to incomplete local melting.

Description

Technical Field

[0001] This invention belongs to the field of exploration equipment technology, and specifically relates to an unmanned device for seabed exploration. Background Technology

[0002] In the process of analyzing seabed geological structures, observing seabed seismic activity and determining source parameters are extremely helpful for analyzing seabed seismic activity patterns. The analysis results can be widely applied in fields such as seabed mining and oil drilling. However, due to the influence of seawater on sound wave propagation, land-based seismic monitoring equipment is no longer suitable, necessitating the deployment of specialized seabed seismic monitoring equipment in designated sea areas for data acquisition and monitoring. Currently, seabed exploration equipment includes seabed instruments and a detachable coupling frame connected to the seabed instrument. Its working principle and usage are as follows: the seabed instrument is connected to the coupling frame on a ship, and the ship is sailed to the planned location for deployment. The gravity of the coupling frame causes the buoyant seabed instrument to fall freely to the seabed to record data. After completing the planned task, it is retrieved. During retrieval, an acoustic command is sent from the ship. Upon receiving the acoustic release command, the underwater acoustic transducer of the seabed instrument electrochemically melts the fused steel wire, detaching the seabed instrument from the coupling frame. The seabed instrument then floats to the surface using its own buoyancy for retrieval.

[0003] However, this type of wire-fuse release mechanism carries certain risks. In practical applications, due to factors such as unstable current, uneven wire rope material, or response delays in the fusion circuit, some wires may not completely fuse. Incompletely fused wires can hinder the smooth release of exploration equipment, potentially causing equipment jamming or release failure, thereby impacting the progress and efficiency of the entire exploration mission. Summary of the Invention

[0004] To address the problem that existing wire-fuse release mechanisms often fail to completely fuse due to unstable current, uneven wire rope material, or delayed response of the fuse circuit, resulting in incomplete fusion of some wires, this invention provides an unmanned device for seabed exploration.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] This invention provides an unmanned device for seabed exploration, including a sinking frame and exploration equipment. The exploration equipment is disposed on the upper side of the sinking frame, and a release mechanism is provided on the top of the exploration equipment. The release mechanism includes a housing, a ring-shaped steel rope, and a fusible circuit electrically connected to the ring-shaped steel rope. The ring-shaped steel rope is disposed inside the housing, and the housing is installed on the top of the exploration equipment. A plurality of first connecting holes are uniformly arranged on the outer periphery of the housing, and a plurality of second connecting holes corresponding to the plurality of first connecting holes are uniformly arranged on the outer periphery of the sinking frame. A pull rope is provided between each first connecting hole and its corresponding second connecting hole. The lower end of the pull rope is fixedly connected to the second connecting hole, and the upper end of the pull rope passes through the first connecting hole and is fixedly connected to the ring-shaped steel rope.

[0007] As a preferred embodiment of the present invention, it also includes an anti-sinking mechanism, which is used to increase the contact area between the unmanned device and the seabed surface when approaching the seabed.

[0008] As a preferred technical solution of the present invention, the anti-sinking mechanism includes single-beam sonar depth sounders disposed on both sides of the exploration equipment, and a fabric assembly disposed on the bottom side of the sinking frame; when the single-beam sonar depth sounder detects that the distance between the unmanned device and the seabed is less than or equal to a preset distance threshold, the fabric assembly is changed from a stored state to a released state.

[0009] As a preferred embodiment of the present invention, the fabric assembly includes a fabric box and a fabric roll stored in the fabric box. The fabric box is connected to the first side of the bottom of the coupling frame. A rotating shaft is rotatably arranged inside the fabric box. The fabric roll is wound around the rotating shaft, and one end of the fabric roll wound on the inner side is fixedly connected to the rotating shaft. A sliding rod is provided at one end of the fabric roll wound on the outer side.

[0010] The bottom of the coupling frame is provided with a first guide groove and a second guide groove on the second and third sides adjacent to the first side, respectively. The two ends of the slide rod are slidably engaged with the first guide groove and the second guide groove, respectively. The first guide groove and the second guide groove are respectively provided with a first locking component and a second locking component electrically connected to the single-beam sonar depth sounder. When the fabric component is in the storage state, the first locking component and the second locking component abut and limit the slide rod.

[0011] As a preferred embodiment of the present invention, the bottom of the coupling frame is provided with a plurality of connection points on the fourth side opposite to the first side, and the slide rod is provided with a plurality of first elastic elements corresponding to the plurality of connection points. One end of the first elastic element is connected to the slide rod and the other end is connected to the connection point. The first elastic element is in a stretched state.

[0012] As a preferred embodiment of the present invention, the first locking component includes a first pin that can slide into or out of the first guide groove; a first housing is provided on the upper side of the first guide groove, the first housing having a first opening communicating with the first guide groove and a first cavity extending inward from the first opening; one end of the first pin passes through the first opening into the first cavity, and the end of the first pin passing through the first cavity is connected to a first piston, the outer diameter of the first piston being the same as the inner diameter of the first cavity, and the outer diameter of the first pin being the same as the inner diameter of the first opening;

[0013] The first cavity is divided by the first piston into a second cavity near the first guide groove and a third cavity away from the first guide groove. A first gas generator is installed in the second cavity and is electrically connected to the single-beam sonar depth sounder. When the single-beam sonar depth sounder detects that the distance between the unmanned device and the seabed is less than or equal to a preset distance threshold, it activates the first gas generator, causing the first gas generator to release gas in the second cavity, so that the first piston moves toward the third cavity, the first pin retracts from the first guide groove, and the first locking component releases its contact limit on the slide rod.

[0014] As a preferred technical solution of the present invention, a first locking hook is provided at the end of the first guide groove away from the fabric assembly. The first locking hook includes a first rotating part hinged to the sinker frame, a first hook part connected to one side of the first rotating part and curved in an arc shape, and a first abutting part connected to the other side of the first rotating part for impact by the slide bar.

[0015] When the fabric assembly is in the stored state, the first hook portion is connected to the coupling frame by an easy-tear adhesive and is located outside the first guide groove; when the slide rod moves to the end of the first guide groove away from the fabric assembly and hits the first abutment portion, the first hook portion rotates into the first guide groove, and the gap between the first hook portion and the inner wall of the first guide groove is smaller than the outer diameter of the slide rod.

[0016] As a preferred embodiment of the present invention, the outer periphery of the coupling frame is rectangular, the width of the fabric roll is less than or equal to the length of the first side and the fourth side, and the length of the fabric roll is greater than or equal to the length of the second side and the third side; the first guide groove and the second guide groove are horizontally arranged straight grooves.

[0017] As a preferred embodiment of the present invention, a second elastic element is provided between the bottom side of the exploration equipment and the top side of the coupling frame.

[0018] As a preferred embodiment of the present invention, the preset distance threshold is 5m.

[0019] The beneficial effects of this invention are as follows:

[0020] This solution addresses the problem of incomplete wire melting in existing technologies by using a ring-shaped steel rope. Because the ring-shaped steel rope forms a closed loop, the current can flow evenly throughout the entire rope, ensuring uniform heating at all points. When any part of the ring-shaped steel rope melts due to the current, the mechanical balance of the entire rope is broken, and all the tension ropes connected to the ring-shaped steel rope will be released simultaneously, thereby achieving smooth separation of the exploration equipment from the sinker frame and effectively avoiding the risk of release failure due to incomplete local melting. Attached Figure Description

[0021] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a front view structural diagram of an unmanned device for seabed exploration according to the present invention;

[0023] Figure 2 This is a schematic diagram of the external structure of the release mechanism in an unmanned device for seabed exploration according to the present invention.

[0024] Figure 3 This is a schematic diagram of the internal structure of the release mechanism in an unmanned device for seabed exploration according to the present invention.

[0025] Figure 4 This is a schematic diagram of the top side structure of the coupling frame in an unmanned device for seabed exploration according to the present invention.

[0026] Figure 5 This is a schematic diagram of the first structure on the bottom side of the coupling frame in an unmanned device for seabed exploration according to the present invention;

[0027] Figure 6 This is a schematic diagram of the second structure on the bottom side of the coupling frame in an unmanned device for seabed exploration according to the present invention;

[0028] Figure 7 This is a schematic diagram of the cooperation structure between the sliding rod and the first guide groove and the second guide groove in an unmanned device for seabed exploration according to the present invention.

[0029] Figure 8 This is a schematic diagram of the first mating structure between the slide bar and the first guide groove in an unmanned device for seabed exploration according to the present invention;

[0030] Figure 9 This is a schematic diagram of the second mating structure between the slide bar and the first guide groove in an unmanned device for seabed exploration according to the present invention;

[0031] Figure 10 This is a schematic diagram of the first internal structure of the first locking component in an unmanned device for seabed exploration according to the present invention.

[0032] Figure 11 This is a schematic diagram of the second internal structure of the first locking component in an unmanned device for seabed exploration according to the present invention.

[0033] Explanation of main symbols

[0034] In the picture:

[0035] 10. Coupling frame; 11. First guide groove; 12. Second guide groove; 20. Exploration equipment; 30. Release mechanism; 31. Housing; 32. Ring steel rope; 33. Pull rope; 40. Anti-sinking mechanism; 41. Single-beam sonar depth sounder; 42. Fabric assembly; 421. Fabric box; 422. Fabric roll; 423. Slide rod; 43. First locking assembly; 431. First pin; 432. First outer shell; 433. First piston; 434. Second cavity; 435. Third cavity; 436. First gas generator; 44. First elastic element; 45. First locking hook; 451. First rotating part; 452. First hook part; 453. First abutment part. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] Please see Figure 1-3This embodiment provides an unmanned device for seabed exploration, including a sinking frame 10 and an exploration device 20. The exploration device 20 is disposed on the upper side of the sinking frame 10, and a release mechanism 30 is disposed on the top of the exploration device 20. The release mechanism 30 includes a housing 31, a ring steel rope 32, and a fuse circuit electrically connected to the ring steel rope 32. The ring steel rope 32 is disposed inside the housing 31. The housing 31 is mounted on the top of the exploration device 20, and a plurality of first connecting holes are uniformly disposed on the outer periphery of the housing 31. A plurality of second connecting holes corresponding to the plurality of first connecting holes are uniformly disposed on the outer periphery of the sinking frame 10. A pull rope 33 is disposed between each first connecting hole and its corresponding second connecting hole. The lower end of the pull rope 33 is fixedly connected to the second connecting hole, and the upper end of the pull rope 33 passes through the first connecting hole and is fixedly connected to the ring steel rope 32.

[0044] It should be explained that in seabed exploration, unmanned devices need to operate stably in complex seabed environments and be able to release exploration equipment 20 as needed. Existing release mechanisms 30 often fail to release due to incomplete melting of the steel wires. Therefore, this design aims to provide an unmanned device with a more reliable release mechanism to ensure that the exploration equipment 20 is released as planned, guaranteeing the smooth progress of the mission and the recovery of the equipment. Specifically, the fusion circuit is electrically connected to the annular steel rope 32. When energized, current flows through the annular steel rope 32, generating heat. When the temperature reaches the melting point of the steel rope, it melts and breaks. The melting of the annular steel rope 32 causes all the tension ropes 33 to lose their restraint, thereby releasing the exploration equipment 20.

[0045] During the operation of an unmanned device in this embodiment: after the unmanned device enters the water, the release mechanism 30 is in standby mode, the annular steel rope 32 is not energized, and the pull rope 33 remains connected, ensuring that the exploration equipment 20 is tightly connected to the sinking frame 10. The sinking frame 10 drives the exploration equipment 20 to sink in the seawater until it reaches the seabed. When it is necessary to release the exploration equipment 20, the control system sends a signal to activate the fuse circuit. The fuse circuit is energized, and the current flows through the annular steel rope 32, causing the annular steel rope 32 to melt. After the annular steel rope 32 melts, all the pull ropes 33 lose their restraint and detach from the first and second connecting holes. The exploration equipment 20 separates from the sinking frame 10 by its own buoyancy and floats to the sea surface for recovery.

[0046] Furthermore, such as Figure 1 as well as Figures 5 to 11 As shown, it also includes an anti-sinking mechanism 40, which is used to increase the contact area between the unmanned device and the seabed surface when approaching the seabed.

[0047] Understandably, when an unmanned device approaches the seabed, to prevent the sinking frame 10 from sinking into the silt, it is necessary to increase the contact area between the device and the seabed, thereby reducing the pressure on the seabed. In this embodiment, the anti-sinking mechanism 40 is designed to automatically deploy when the unmanned device approaches the seabed, increasing the contact area, improving the device's stability, and preventing it from sinking into seabed sediment. Specifically, according to the pressure formula p=F / A, with the device's weight F remaining constant, increasing the contact area A can effectively reduce the pressure p on the seabed, reducing the risk of sinking.

[0048] Furthermore, the anti-sinking mechanism 40 includes single-beam sonar depth sounders 41 mounted on both sides of the exploration equipment 20, and a fabric assembly 42 mounted on the bottom side of the sinking frame 10. When the single-beam sonar depth sounder 41 detects that the distance between the unmanned device and the seabed is less than or equal to a preset distance threshold, the fabric assembly 42 changes from a retracted state to a released state. Specifically, as the unmanned device carrying the anti-sinking mechanism 40 approaches the seabed, the single-beam sonar depth sounder 41 monitors the distance in real time. When the distance is less than or equal to the preset threshold, the single-beam sonar depth sounder 41 triggers a signal. Upon receiving the trigger signal, the fabric assembly 42 releases the fabric, which fully unfolds, increasing the contact area with the seabed, reducing pressure, and preventing sinking. Preferably, the preset distance threshold is 5m.

[0049] Furthermore, the fabric assembly 42 includes a fabric box 421 and a fabric roll 422 stored in the fabric box 421. The fabric box 421 is connected to the first side of the bottom of the sinker frame 10. A rotating shaft is rotatably provided inside the fabric box 421. The fabric roll 422 is wound around the rotating shaft, and one end of the fabric roll 422 wound on the inner side is fixedly connected to the rotating shaft. A sliding rod 423 is provided at one end of the fabric roll 422 wound on the outer side. The second and third sides of the bottom of the sinker frame 10 adjacent to the first side are respectively provided with a first guide groove 11 and a second guide groove 12. The two ends of the sliding rod 423 are slidably engaged with the first guide groove 11 and the second guide groove 12, respectively. A first locking component 43 and a second locking component electrically connected to the single-beam sonar depth sounder 41 are respectively provided in the first guide groove 11 and the second guide groove 12. When the fabric assembly 42 is in the stored state, the first locking component 43 and the second locking component abut and limit the sliding rod 423.

[0050] Understandably, in the stored state, the fabric roll 422 is tightly wound around the shaft and placed in the fabric box 421, reducing space occupation. At this time, the slide bar 423 is stopped and limited by the first locking component 43 and the second locking component. In the released state, the single-beam sonar depth sounder 41 triggers a signal, activating the first locking component 43 and the second locking component, releasing the slide bar 423 from its limit. The slide bar 423 moves smoothly under the constraint of the first guide groove 11 and the second guide groove 12, allowing the fabric roll 422 to unfold smoothly. When the slide bar 423 slides to the end of the guide groove, the fabric is fully unfolded, increasing the contact area, reducing pressure, and preventing sinking. The first locking component 43 and the second locking component, by stopping the fabric roll 422 by abutting the slide bar 423, maintain the stable storage of the fabric assembly 422 when release is not triggered, preventing accidental release.

[0051] Furthermore, the bottom of the coupling frame 10, on the fourth side opposite to the first side, is provided with multiple connection points. The slide rod 423 is provided with multiple first elastic elements 44 corresponding to these connection points. One end of each first elastic element 44 is connected to the slide rod 423, and the other end is connected to the connection point. The first elastic element 44 is in a stretched state. Specifically, when the fabric assembly 42 is in the retracted state, the slide rod 423 is abutted and limited by the first locking component 43 and the second locking component. The first elastic element 44 remains stretched, providing pre-tension to the fabric assembly 42. When the single-beam sonar depth sounder 41 detects that the distance between the unmanned device and the seabed is less than or equal to a preset distance threshold, it sends a signal to activate the locking component, releasing the abutment limitation of the slide rod 423. Under the tension of the first elastic element 44, the slide rod 423 drives the fabric roll 422 to slide along the first guide groove 11 and the second guide groove 12, unfolding the fabric. When the slide rod 423 slides to the end of the first guide groove 11 and the second guide groove 12, the elasticity of the first elastic element 44 is released.

[0052] In some embodiments, the first locking component 43 includes a first pin 431 slidably inserted into or withdrawn from the first guide groove 11; a first housing 432 is disposed on the upper side of the first guide groove 11, the first housing 432 having a first opening communicating with the first guide groove 11 and a first cavity extending inward from the first opening; one end of the first pin 431 passes through the first opening into the first cavity, and the end of the first pin 431 passing through the first cavity is connected to a first piston 433, the outer diameter of the first piston 433 being the same as the inner diameter of the first cavity, and the outer diameter of the first pin 431 being the same as the inner diameter of the first opening; the first cavity is divided by the first piston 433 into sections close to... A second cavity 434 on one side of the first guide groove 11 and a third cavity 435 away from the first guide groove 11. A first gas generator 436 is installed in the second cavity 434 and is electrically connected to a single-beam sonar depth sounder 41. When the single-beam sonar depth sounder 41 detects that the distance between the unmanned device and the seabed is less than or equal to a preset distance threshold, it activates the first gas generator 436, causing the first gas generator 436 to release gas in the second cavity 434, so that the first piston 433 moves toward the third cavity 435, the first pin 431 exits the first guide groove 11, and the first locking assembly 43 releases its contact limit on the slide rod 423.

[0053] Understandably, in the stored state, the first pin 431 inserts into the first guide groove 11 and abuts against the limiting slide bar 423, and the fabric assembly 42 is stably stored; when a trigger signal is received from the single-beam sonar depth sounder 41, the first gas generator 436 releases gas, pushing the first piston 433 to move towards the third cavity 435. The first piston 433 is connected to the first pin 431. The movement of the piston causes the pin to exit the first guide groove 11, releasing the abutment and limiting of the slide bar 423. Under the tension of the first elastic element 44, the slide bar 423 drives the fabric roll 422 to unfold the fabric.

[0054] Furthermore, a first locking hook 45 is provided at the end of the first guide groove 11 away from the fabric assembly 42. The first locking hook 45 includes a first rotating part 451 hinged to the sinker frame 10, a first hook part 452 connected to one side of the first rotating part 451 and curved in an arc shape, and a first abutting part 453 connected to the other side of the first rotating part 451 for impact by the slide rod 423. When the fabric assembly 42 is in the stored state, the first hook part 452 is connected to the sinker frame 10 by an easy-tear adhesive and is located outside the first guide groove 11. When the slide rod 423 moves to the end of the first guide groove 11 away from the fabric assembly 42 and impacts the first abutting part 453, the first hook part 452 rotates into the first guide groove 11, and the gap between the first hook part 452 and the inner wall of the first guide groove 11 is smaller than the outer diameter of the slide rod 423. A second locking hook is provided at the end of the second guide groove 12 away from the fabric assembly 42. The second locking hook includes a second rotating part hinged to the sinker frame 10, a second hook part connected to one side of the second rotating part and curved in an arc, and a second abutting part connected to the other side of the second rotating part for impact by the slide rod 423. When the fabric assembly 42 is in the stored state, the second hook part is connected to the sinker frame 10 by an easy-tear adhesive and is located outside the second guide groove 12. When the slide rod 423 moves to the end of the second guide groove 12 away from the fabric assembly 42 and impacts the second abutting part, the second hook part rotates into the second guide groove 12, and the gap between the second hook part and the inner wall of the second guide groove 12 is smaller than the outer diameter of the slide rod 423.

[0055] It should be explained that when the unmanned device approaches the seabed and prepares to deploy the fabric assembly 42, in addition to ensuring that the slide bar 423 can be precisely controlled to achieve stable storage and timely release of the fabric assembly 42, a reliable mechanical locking device is also needed to further fix the position of the slide bar 423 after the fabric assembly 42 is fully deployed, preventing it from retracting and ensuring continuous and stable contact between the fabric and the seabed. Therefore, this embodiment designs a first locking hook 45 and a second locking hook triggered by the movement of the slide bar 423 to achieve secondary locking of the slide bar 423. After the fabric assembly 42 is fully deployed, the first locking hook 45 and the second locking hook provide additional mechanical locking to prevent the slide bar 423 from retracting due to external interference, ensuring continuous and stable contact between the fabric and the seabed.

[0056] Furthermore, the outer perimeter of the coupling frame 10 is rectangular. The width of the fabric roll 422 is less than or equal to the length of the first and fourth sides, and the length of the fabric roll 422 is greater than or equal to the length of the second and third sides. The first guide groove 11 and the second guide groove 12 are horizontally arranged straight grooves. The width of the fabric roll 422 is designed to be less than or equal to the length of the first and fourth sides of the coupling frame 10 to ensure that the fabric does not exceed the lateral range of the coupling frame 10 after unfolding. The length of the fabric roll 422 is greater than or equal to the length of the second and third sides of the coupling frame 10 to ensure that the fabric can cover the entire longitudinal area of ​​the coupling frame 10.

[0057] Furthermore, a second elastic element is provided between the bottom side of the exploration equipment 20 and the top side of the coupling frame 10. During the operation of the unmanned device, the exploration equipment 20 and the coupling frame 10 may be subjected to various impacts and vibrations. If these external forces are not buffered, they may cause damage to the exploration equipment 20 or loosening of the connection. To solve this problem, a second elastic element is introduced in the design to absorb impact energy and protect the stability of the equipment and connection. The second elastic element can be made of rubber, springs, or other polymer elastic materials. The specific material selection and design are determined according to the size, weight, and expected impact intensity of the unmanned device.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An unmanned device for seabed exploration, characterized in that: The device includes a sinking frame and exploration equipment. The exploration equipment is located on the upper side of the sinking frame, and a release mechanism is provided on the top of the exploration equipment. The release mechanism includes a housing, a ring-shaped steel rope, and a fusible circuit electrically connected to the ring-shaped steel rope. The ring-shaped steel rope is located inside the housing. The housing is installed on the top of the exploration equipment, and a plurality of first connecting holes are evenly arranged on the outer periphery of the housing. A plurality of second connecting holes corresponding to the plurality of first connecting holes are evenly arranged on the outer periphery of the sinking frame. A pull rope is provided between each first connecting hole and its corresponding second connecting hole. The lower end of the pull rope is fixedly connected to the second connecting hole, and the upper end of the pull rope passes through the first connecting hole and is fixedly connected to the ring-shaped steel rope. The unmanned device also includes an anti-sinking mechanism, which is used to increase the contact area between the unmanned device and the seabed surface when approaching the seabed. The anti-sinking mechanism includes single-beam sonar depth sounders installed on both sides of the exploration equipment, and a fabric assembly installed on the bottom side of the sinking frame; when the single-beam sonar depth sounder detects that the distance between the unmanned device and the seabed is less than or equal to a preset distance threshold, the fabric assembly is changed from a retracted state to a released state. The fabric assembly includes a fabric box and a fabric roll stored in the fabric box. The fabric box is connected to the first side of the bottom of the coupling frame. A rotating shaft is rotatably arranged inside the fabric box. The fabric roll is wound around the rotating shaft, and one end of the fabric roll wound on the inner side is fixedly connected to the rotating shaft. A sliding rod is provided at one end of the fabric roll wound on the outer side. The bottom of the coupling frame is provided with a first guide groove and a second guide groove on the second and third sides adjacent to the first side, respectively. The two ends of the slide rod are slidably engaged with the first guide groove and the second guide groove, respectively. The first guide groove and the second guide groove are respectively provided with a first locking component and a second locking component electrically connected to the single-beam sonar depth sounder. When the fabric component is in the storage state, the first locking component and the second locking component abut and limit the slide rod. The bottom of the coupling frame is provided with a plurality of connection points on the fourth side opposite to the first side. The slide bar is provided with a plurality of first elastic elements corresponding to the plurality of connection points. One end of the first elastic element is connected to the slide bar and the other end is connected to the connection point. The first elastic element is in a stretched state.

2. The unmanned device for seabed exploration according to claim 1, characterized in that: The first locking component includes a first pin that can slide into or out of the first guide groove; a first housing is provided on the upper side of the first guide groove, the first housing having a first opening communicating with the first guide groove, and a first cavity extending inward from the first opening; One end of the first pin passes through the first opening into the first cavity, and the end of the first pin that passes through the first cavity is connected to a first piston. The outer diameter of the first piston is the same as the inner diameter of the first cavity, and the outer diameter of the first pin is the same as the inner diameter of the first opening. The first cavity is divided by the first piston into a second cavity near the first guide groove and a third cavity away from the first guide groove. A first gas generator is installed in the second cavity and is electrically connected to the single-beam sonar depth sounder. When the single-beam sonar depth sounder detects that the distance between the unmanned device and the seabed is less than or equal to a preset distance threshold, it activates the first gas generator, causing the first gas generator to release gas in the second cavity, so that the first piston moves toward the third cavity, the first pin retracts from the first guide groove, and the first locking component releases its contact limit on the slide rod.

3. The unmanned device for seabed exploration according to claim 1, characterized in that: The first guide groove is provided with a first locking hook at one end away from the fabric assembly. The first locking hook includes a first rotating part that is hinged to the sinker frame, a first hook part that is connected to one side of the first rotating part and is curved in an arc, and a first abutting part that is connected to the other side of the first rotating part for the slide bar to impact. When the fabric assembly is in the stored state, the first hook portion is connected to the coupling frame by an easy-tear adhesive and is located outside the first guide groove; when the slide rod moves to the end of the first guide groove away from the fabric assembly and hits the first abutment portion, the first hook portion rotates into the first guide groove, and the gap between the first hook portion and the inner wall of the first guide groove is smaller than the outer diameter of the slide rod.

4. The unmanned device for seabed exploration according to claim 1, characterized in that: The outer periphery of the coupling frame is rectangular, the width of the fabric roll is less than or equal to the length of the first side and the fourth side, and the length of the fabric roll is greater than or equal to the length of the second side and the third side; the first guide groove and the second guide groove are horizontally arranged straight grooves.

5. The unmanned device for seabed exploration according to claim 1, characterized in that: A second elastic element is provided between the bottom side of the exploration equipment and the top side of the coupling frame.

6. The unmanned device for seabed exploration according to claim 1, characterized in that: The preset distance threshold is 5m.

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