Submarine cable fault monitoring device and method

Abstract

The invention relates to the technical field of submarine cable monitoring, in particular to a submarine cable fault monitoring device and method. The device comprises a bottom plate, a swing assembly, a power conversion mechanism and a reinforcing mechanism, a cover body and a rotating shaft rotationally penetrating through the cover body are arranged on the bottom plate, a monitoring assembly is arranged at the top end of the rotating shaft, and the swing assembly used for driving the rotating shaft and the monitoring assembly to swing back and forth at a certain angle is arranged in the cover body; the cover body is provided with a power conversion mechanism used for being matched with water flow to supply energy to the swing assembly. The monitoring device disclosed by the invention is provided with the rotating shaft and the cover body, the monitor is arranged on the cover body through the rotating shaft, the rotating shaft is provided with the swing assembly, the cover body is provided with the power conversion mechanism for supplying energy to the swing assembly, and the rotating shaft is driven to drive the monitor to swing back and forth at a certain angle by converting water energy and supplying energy to the swing assembly; therefore, the monitoring area is changed, the monitoring range is expanded, and the practicability is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of submarine cable monitoring, and in particular relates to a submarine cable fault monitoring device and method. Background Art

[0002] With the advent of the information age, the global demand for communications and the Internet continues to increase, and most of the global data transmission relies on underwater submarine cables. However, due to the complexity of the submarine environment and the long-term corrosion of cables by seawater and other factors, the incidence of cable failures has also increased, so it is necessary to use monitoring devices to monitor submarine cables.

[0003] At the same time, with the development of science and technology, some high-tech technologies have gradually been applied to underwater submarine cable fault detection, such as fiber optic sensing technology and ultrasonic detection technology. Fiber optic sensing monitors can be used to monitor cable stress, temperature, vibration and other parameters in real time, and can provide early warning of cable failures.

[0004] However, once the above-mentioned submarine monitoring device is fixed at a certain position near the cable, its monitoring range is relatively limited and it is impossible to expand the monitoring range on the original basis, resulting in a shorter monitoring distance. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a submarine cable fault monitoring device and method to solve the problem that the monitoring range is limited in the prior art, it is difficult to expand the monitoring range on the original basis, and the monitoring distance is short.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A submarine cable fault monitoring device, comprising: Bottom plate 1; A cover body 2 is arranged on the base plate 1; The rotating shaft 3 passes through the cover 2, and a monitoring component is arranged on the upper end; A swing assembly is arranged inside the cover body 2 and is used to drive the rotating shaft 3 to rotate; A power conversion mechanism is arranged below the swing assembly and is used to drive the swing assembly to swing; A reinforcement mechanism connected to the bottom plate 1 and used to fix the bottom plate 1 to the seabed; The power conversion mechanism includes two parallel guide posts 13, both ends of each guide post 13 are fixedly connected to the cover body 2, and the two guide posts 13 pass through two moving plates 14, which are respectively arranged on both sides of the swing assembly, and the guide posts 13 are provided with a block ring 20 located inside the moving plates 14; Each movable plate 14 passes through a connecting shaft 15, the outer end of the connecting shaft 15 passes through the cover 2 and is connected to a propeller 18, and the inner end of the connecting shaft 15 passes through the movable plate 14 and is connected to a main bevel gear 16; the swing assembly is connected to a slave bevel gear 17, and the slave bevel gear 17 can mesh with any one of the main bevel gears 16.

[0007] A further improvement of the present invention is: Preferably, the monitoring component includes a rotating seat 7 arranged at the upper end of the rotating shaft 3, an adjusting motor 5 is arranged on the rotating seat 7, an output shaft of the adjusting motor 5 is connected to a rotating plate 6, and a monitoring instrument 4 is arranged on the rotating plate 6.

[0008] Preferably, the swing assembly includes a connecting disk 11, a strip plate 8 is arranged above the connecting disk 11, and the end of the strip plate 8 is fixedly connected to the rotating shaft 3; a protruding convex shaft 12 is fixedly arranged at an eccentric position of the connecting disk 11, and the convex shaft 12 is inserted into the strip plate 8; the lower end of the connecting disk 11 is connected to the power conversion mechanism.

[0009] Preferably, a strip-shaped through hole 9 is opened in the strip-shaped plate 8 along the length direction, and the convex shaft 12 is inserted into the strip-shaped through hole 9 .

[0010] Preferably, a linkage shaft 10 is connected to the lower end of the connecting plate 11 , and the linkage shaft 10 is connected to the slave bevel gear 17 .

[0011] Preferably, the connecting shaft 15 is disposed between two guide pillars 13 .

[0012] Preferably, the reinforcement mechanism comprises sockets 21 arranged at four corners of the bottom plate 1, and the bottom of the sockets 21 is in a pointed cone shape.

[0013] Preferably, two sets of opposite slide plates 22 and a plurality of limit posts 23 are arranged in the vertical direction inside the socket 21; the plurality of limit posts 23 are arranged at the upper part and the lower part of the socket 21 respectively; the limit posts 23 penetrate the slide plates 22, and a spring 25 is sleeved on the limit posts 23 between the outer side of the slide plates 22 and the side wall of the socket 21; A horizontal anchor 26 is also provided between the outer side of the slide plate 22 and the side wall of the socket 21 . The inner end of the anchor 26 is fixedly connected to the slide plate 22 , and the outer end can pass through the side wall of the socket 21 .

[0014] Preferably, a driving member is provided at the upper end of each socket 21; the driving member includes a threaded sleeve 27 arranged on the cover body 2, the threaded sleeve 27 is internally threadedly connected to a threaded rod 28, the top of the threaded rod 28 is connected to a handle 30, the bottom end of the threaded rod 28 is rotatably connected to a push block 29, and the push block 29 is slidably connected to the upper end of the slide plate 22.

[0015] A monitoring method based on the above-mentioned submarine cable fault monitoring device includes the following steps: fixing the bottom plate 1 to the seabed by a reinforcement mechanism, the flow of seawater generates thrust on the propeller 18, and the propeller 18 pushes the movable plate 14 and the connecting shaft 15 to move toward the inside of the cover 2 until the movable plate 14 contacts the block ring 20, and the main bevel gear 16 and the slave bevel gear 17 at the end of the connecting shaft 15 are engaged; the seawater drives the propeller 18 to rotate, driving the connecting shaft 15 to rotate, and then driving the main bevel gear 16 and the slave bevel gear 17 to rotate, and the slave bevel gear 17 drives the power conversion mechanism to swing, and the swinging component drives the rotating shaft 3 to rotate, and then drives the monitoring component to rotate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The invention discloses a submarine cable fault monitoring device, which is provided with a rotating shaft and a cover body, wherein a monitor is arranged on the cover body through the rotating shaft, a swing component is arranged on the rotating shaft, and a power conversion mechanism for supplying energy to the swing component is arranged on the cover body, and through the coordinated action of a propeller and a bevel gear set in the power conversion mechanism, the energy of the submarine water flow is converted into the mechanical energy required to drive the swing component, and the swing component is supplied with energy, thereby driving the rotating shaft to rotate, so that the rotating shaft can drive the monitor to swing back and forth at a certain angle, thereby changing its monitoring area, expanding the monitoring range, and improving its practicability; the device is also provided with a reinforcement mechanism, which improves the grip of the equipment on the seabed and the stability of the connection with the seabed.

[0017] Furthermore, while the monitoring component on the rotating shaft can rotate along the axis of the rotating shaft, the monitoring instrument can be made to perform pitch rotation by adjusting the motor, thereby further expanding the monitoring range.

[0018] Furthermore, the swing assembly includes a connecting disk, on which a strip plate is arranged, and a convex shaft eccentrically arranged on the connecting disk is inserted into the strip plate, so that when the connecting disk rotates, the strip plate can be driven to swing through the convex shaft, thereby driving the rotating shaft at the end to rotate.

[0019] Furthermore, the power transmitted by the power conversion mechanism is transmitted to the swing assembly through the linkage shaft.

[0020] Furthermore, the connecting shaft is arranged between the two guide pillars, so that the connecting shaft can move stably under the action of the moving plate when performing linear movement or rotation.

[0021] Furthermore, the reinforcement mechanism is provided with laterally protruding anchors, so that the reinforcement mechanism can stably reinforce the entire device both vertically and laterally, thereby strengthening the connection force between the entire device and the seabed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a submarine cable fault monitoring device according to the present invention; Figure 2 for Figure 1 A schematic diagram of the side section structure of the reinforcement mechanism; Figure 3 for Figure 1 A schematic diagram of a top cross-sectional structure; Figure 4 for Figure 1 A schematic diagram of a side cross-sectional structure; Figure 5 for Figure 2 Schematic diagram of the local enlarged structure at A.

[0023] 1. Bottom plate; 2. Cover; 3. Rotating shaft; 4. Monitor; 5. Adjusting motor; 6. Rotating plate; 7. Rotating seat; 8. Strip plate; 9. Strip through hole; 10. Linkage shaft; 11. Connecting plate; 12. Convex shaft; 13. Guide column; 14. Moving plate; 15. Connecting shaft; 16. Main bevel gear; 17. Slave bevel gear; 18. Propeller; 19. Connecting plate; 20. Block ring; 21. Socket; 22. Slide plate; 23. Limiting column; 24. Oblique section; 25. Spring; 26. Anchor nail; 27. Threaded sleeve; 28. Threaded rod; 29. ​​Push block; 30. Handle; 31. Round hole. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings: Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] Example 1 like Figure 1-Figure 5 As shown, a submarine cable fault monitoring device proposed by the present invention includes a bottom plate 1, a swing assembly, a power conversion mechanism and a reinforcement mechanism.

[0026] The bottom plate 1 is provided with a cover body 2 and a rotating shaft 3 that rotates and penetrates the cover body 2, and a monitoring component is provided at the top of the rotating shaft 3. A swinging component for driving the rotating shaft 3 and the monitoring component to swing back and forth at a certain angle is provided inside the cover body 2, and a power conversion mechanism for cooperating with the water flow to supply energy to the swinging component is provided on the cover body 2. A reinforcement mechanism is provided on the bottom plate 1 to firmly fix the bottom plate 1 on the seabed.

[0027] See also Figure 1 and Figure 4The monitoring assembly includes a monitor 4, an adjusting motor 5, a rotating plate 6 and a rotating seat 7. Two rotating seats 7 are arranged opposite to each other at the top of the rotating shaft 3, and an adjusting motor 5 is installed on the side of one rotating seat 7. The output end of the adjusting motor 5 passes through the two rotating seats 7 and can rotate relative to the two rotating seats 7. The rotating plate 6 is fixedly connected to the output end of the adjusting motor 5, and the monitor 4 is installed on one side of the rotating plate 6. The adjusting motor 5 can drive the rotating plate 6 to rotate around the power output shaft of the adjusting motor 5, thereby adjusting the monitoring direction of the monitor 4.

[0028] It should be understood that the adjusting motor 5 and the monitoring instrument 4 are all waterproof devices.

[0029] like Figure 2 and Figure 3 As shown, the swing assembly includes a strip plate 8, a linkage shaft 10 and a convex shaft 12. A strip through hole 9 is provided in the axial direction of the strip plate 8, and a through hole is provided at one end of the strip plate 8. The through hole is different from the strip through hole, and the rotating shaft 3 passes through the through hole. The rotating shaft 3 and the end of the strip plate 8 are fixedly connected. A linkage shaft 10 located on one side of the rotating shaft 3 is rotatably arranged in the cover body 2, and a connecting plate 11 is positioned and connected at the upper end of the linkage shaft 10. The connecting plate 11 is located below the strip plate 8, and a convex shaft 12 that passes through the strip through hole 9 is provided at the eccentric position of the upper end surface thereof.

[0030] like Figure 3 and Figure 4 As shown, the power conversion mechanism includes a guide column 13, a movable plate 14, a connecting shaft 15, a main bevel gear 16, a slave bevel gear 17 and a propeller 18. Two parallel guide columns 13 are arranged in the cover 2, and a parallel connecting shaft 15 is arranged between the two parallel guide columns 13. The connecting shaft 15 is provided with two and coaxial lines, and the two guide columns 13 and the connecting shaft 15 have the same height in the horizontal direction. The two ends of the guide column 13 are fixedly connected to the cover 2, and two movable plates 14 are slidably arranged on the guide column 13. Each movable plate 14 is rotatably connected with a connecting shaft 15, and a bearing is arranged between the movable plate 14 and the connecting shaft 15, so that the movement of the connecting shaft 15 can drive the movable plate 14 to move, and the connecting shaft 15 can rotate relative to the movable plate 14. The outer end of each connecting shaft 15 passes through the cover 2 and is connected to a propeller 18, and the inner end is connected to the main bevel gear 16, and the main bevel gear 16 is meshed and connected with the slave bevel gear 17, and the slave bevel gear 17 is installed on the linkage shaft 10. The two main bevel gears 16 are arranged opposite to each other and are rotatably connected to a slave bevel gear 17. The axial directions of the two main bevel gears 16 and the axial direction of the slave bevel gear 17 are perpendicular to each other. Two block rings 20 are arranged on each guide column 13. Each block ring 20 is arranged on the inner side of the moving plate 14 on the same side. The block rings 20 respectively arranged on the two guide columns 13 on the same side are at equal distances from the side wall of the cover body 2, and are used to limit the moving position of the moving plate 14.

[0031] like Figure 4 As shown, two groups of movable plates 14 and main bevel gears 16 are provided, and a connecting plate 19 is provided on one side between the two groups of movable plates 14. The two groups of main bevel gears 16 are arranged opposite to each other, and at the same time, the slave bevel gear 17 is only in meshing state with one group of main bevel gears 16, and a block ring 20 is provided on the guide column 13. When the movable plate 14 abuts against the two block rings 20 on the inner side, the corresponding main bevel gear 16 thereon is meshed and connected with the slave bevel gear 17, and when one group of movable plates 14 drives the main bevel gear 16 to approach the linkage shaft 10, the other group of movable plates 14 will be driven to synchronously move away from the linkage shaft 10 through the connecting plate 19.

[0032] The flow of seawater generates thrust throughout the device. At this time, the propeller 18, which is in the opposite direction of the flow of seawater to the monitoring device, is subjected to the thrust of the seawater, so that the propeller 18 drives the movable plate 14 and the connecting shaft 15 to move until the movable plate 14 contacts the block ring 20 away from the rotating propeller 18. At this time, the main bevel gear 16 at the end of the connecting shaft 15 is in meshing state with the slave bevel gear 17 on the linkage shaft 10. At this time, as the seawater continues to flow, the propeller 18 will drive the main bevel gear 16 to rotate through the connecting shaft 15, and then drive the linkage shaft 10 to rotate by meshing with the slave bevel gear 17.

[0033] The above structure enables the propeller 18 away from the flow direction of the seawater to rotate when the entire monitoring device is subjected to the thrust of the seawater, and the propeller 18 drives the corresponding connecting shaft 15 and the moving plate 14 to move forward, and the connecting shaft 15 drives the corresponding main bevel gear 16 to rotate. At the same time, the connecting plate 19 drives another group of moving plates 14 to synchronously move away from the linkage shaft 10, and further drives the connecting shaft 15 and the propeller 18 on the other side away from the linkage shaft 10. As the linkage shaft 10 rotates, the connecting disk 11 at the upper end of the linkage shaft 10 rotates, and then drives the convex shaft 12 to rotate, so that the convex shaft 12 moves in the strip through hole 9, and the strip plate 8 starts to swing, and at the same time drives the rotating shaft 3 to rotate, and then drives the monitoring assembly on the rotating shaft 3 to rotate.

[0034] In the above process, the propeller 18 is first pushed by the seawater, driving the connecting shaft 15 and the moving plate 14 to slide along the guide column 13 toward the block ring 20, at which time the rotation of the connecting shaft 15 is temporarily suppressed or rotates freely. When the moving plate 14 contacts the block ring, the position is fixed, and at this time the rotation force of the propeller 18 is transmitted to the main bevel gear 16 through the connecting shaft 15, driving the slave bevel gear 17 and the linkage shaft 10, so that the movement and rotation of the connecting shaft 15 are carried out in stages.

[0035] Example 2 like Figure 1-Figure 5 As shown, a submarine cable fault monitoring device proposed by the present invention, based on the above embodiment, this embodiment also records in detail the specific components of the reinforcement mechanism and the connection method thereof with the bottom plate 1.

[0036] like Figure 2 and Figure 5 As shown, the reinforcement mechanism includes a socket 21, which is provided with four groups, respectively located at the four corners of the bottom of the base plate 1, and two groups of vertically arranged slide plates 22 are arranged inside the socket 21, and the opposite side of the two slide plates 22 is set as the inner side, and the outer side is opposite to the side wall of the socket 21 on the same side, and the top of the slide plate 22 is provided with an oblique section 24, and the two oblique sections 24 are open structures. The four corners of the inner side of the socket 21 are horizontally provided with limit columns 23, and relatively, the upper part of the inner side of the socket 21 is provided with two limit columns 23, and the lower part is provided with two limit columns 23, and the upper two limit columns 23 and the lower two limit columns 23 are all on the same horizontal plane; the two slide plates 22 are slidably connected to the limit columns 23. A spring 25 is sleeved on the limit column 23 between the outer side of the slide plate 22 and the side wall of the socket 21, and each spring 25 is clamped between the slide plate 22 and the outer side wall of the socket 21; a plurality of anchors 26 are provided, which are arranged linearly and vertically and equidistantly between the outer side of the slide plate 22 and the side wall of the socket 21, and the anchors 26 are in a horizontal direction, and the anchors on the same side are arranged between the upper and lower limit columns 23. A driving member is arranged on the outer side of the cover body 2, and is used to drive the slide plate 22 to move to both sides, compress the spring 25, and push the anchor 26 to pass through the two outer side walls of the socket 21. Among them, a plurality of groups of circular holes 31 for the anchors 26 to pass through are provided on the outer side of the socket 21, and the bottom end of the socket 21 and the outer end of the anchor 26 are both arranged in a pointed cone shape.

[0037] As a preferred solution, Figure 1 and Figure 5 As shown, the driving member includes a threaded sleeve 27, a threaded rod 28, a push block 29 and a handle 30. The side of the cover body 2 is connected with the threaded sleeve 27, the threaded sleeve 27 is internally threaded with the threaded rod 28, the top end of which is connected with the handle 30, and the bottom end of which is rotatably provided with a push block 29, and the push block 29 is slidably connected with the socket 21. Among them, the cross-sectional shape of the push block 29 is set to be an isosceles trapezoid, and its two inclined surfaces are respectively matched with the slope surface of the inclined section 24 of the slide plate 22.

[0038] Example 3 This embodiment discloses a monitoring method for the above-mentioned submarine cable fault monitoring device, wherein the socket 21 at the bottom of the bottom plate 1 is inserted into the seabed, thereby fixing it on the seabed near the monitoring cable, and then rotating the handle 30, which drives the threaded rod 28 to rotate relative to the threaded sleeve 27. During the rotation, the threaded rod 28 drives the push block 29 to move downward, so that the bottom end of the push block 29 is inserted between the two oblique sections 24, thereby pushing the two slides 22 to both sides of the block 29 until the slide 22 drives the anchor 26 to pass through the circular hole 31 and insert into the geological layer around the socket 21, thereby improving the stability of the device fixation. When the fixing force needs to be released, by rotating the handle 30 in the opposite direction, the push block 29 rises under the cooperation of the threaded rod 28 and the threaded sleeve 27, and the slide 22 drives the anchor 26 to reset under the action of the spring 25, thereby The lateral limit between the socket 21 and the geological layer is released, making it convenient to pull out the entire device; when the monitor 4 monitors the cable, the flow of seawater generates thrust on the propeller 18, so that the propeller 18 drives the movable plate 14 and the connecting shaft 15 to move until the movable plate 14 contacts the block ring 20. At this time, the main bevel gear 16 at the end of the connecting shaft 15 is in meshing with the slave bevel gear 17 on the linkage shaft 10. At this time, with the continuous flow of seawater, the propeller 18 will drive the main bevel gear 16 to rotate through the connecting shaft 15, and then drive the linkage shaft 10 and the connecting plate 11 to rotate by engaging with the slave bevel gear 17. During the rotation, the convex shaft 12 thereon makes a circular motion, and drives the rotating shaft 3 to swing back and forth at a certain angle through the strip plate 8, thereby expanding the monitoring range of the monitor 4 and improving the overall practicality.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0040] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0041] In the description of the present invention, 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.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0043] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A submarine cable fault monitoring device, characterized in that: include: Bottom plate (1); A cover body (2) is arranged on the bottom plate (1); The rotating shaft (3) passes through the cover body (2), and a monitoring component is arranged on the upper end; A swing assembly, arranged inside the cover body (2) and used to drive the rotating shaft (3) to rotate; A power conversion mechanism is arranged below the swing assembly and is used to drive the swing assembly to swing; A reinforcement mechanism connected to the bottom plate (1) and used to fix the bottom plate (1) to the seabed; The power conversion mechanism comprises two parallel guide columns (13), each guide column (13) having two ends fixedly connected to the cover body (2), the two guide columns (13) passing through two movable plates (14), the two movable plates (14) being respectively arranged on two sides of the swing assembly, and the guide columns (13) being provided with a block ring (20) located on the inner side of the movable plate (14); Each movable plate (14) passes through a connecting shaft (15), the outer end of the connecting shaft (15) passes through the cover (2) and is connected to a propeller (18), and the inner end of the connecting shaft (15) passes through the movable plate (14) and is connected to a main bevel gear (16); the swing assembly is connected to a slave bevel gear (17), and the slave bevel gear (17) can mesh with any one of the main bevel gears (16).

2. A submarine cable fault monitoring device according to claim 1, characterized in that: The monitoring component comprises a rotating seat (7) arranged at the upper end of the rotating shaft (3), an adjusting motor (5) is arranged on the rotating seat (7), an output shaft of the adjusting motor (5) is connected to a rotating plate (6), and a monitoring instrument (4) is arranged on the rotating plate (6).

3. A submarine cable fault monitoring device according to claim 1, characterized in that: The swing assembly comprises a connection disk (11), a strip plate (8) is arranged above the connection disk (11), and the end of the strip plate (8) is fixedly connected to the rotating shaft (3); a protruding convex shaft (12) is fixedly arranged at an eccentric position of the connection disk (11), and the convex shaft (12) is inserted into the strip plate (8); and the lower end of the connection disk (11) is connected to a power conversion mechanism.

4. A submarine cable fault monitoring device according to claim 3, characterized in that: The strip plate (8) is provided with a strip through hole (9) along the length direction, and the convex shaft (12) is inserted into the strip through hole (9).

5. A submarine cable fault monitoring device according to claim 3, characterized in that: The lower end of the connecting plate (11) is connected to a linkage shaft (10), and the linkage shaft (10) is connected to a secondary bevel gear (17).

6. A submarine cable fault monitoring device according to claim 1, characterized in that: The connecting shaft (15) is arranged between the two guide pillars (13).

7. A submarine cable fault monitoring device according to claim 1, characterized in that: The reinforcement mechanism comprises sockets (21) arranged at four corners of the bottom plate (1), and the bottom of the sockets (21) is in a pointed cone shape.

8. A submarine cable fault monitoring device according to claim 7, characterized in that: Two sets of opposing slide plates (22) are arranged inside the socket (21) in the vertical direction, and a plurality of limit columns (23) are arranged in the horizontal direction; the plurality of limit columns (23) are arranged at the upper part and the lower part of the socket (21) respectively; the limit columns (23) penetrate the slide plates (22), and a spring (25) is sleeved on the limit columns (23) between the outer side of the slide plates (22) and the side wall of the socket (21); A horizontal anchor (26) is also provided between the outer side of the slide plate (22) and the side wall of the socket (21); the inner end of the anchor (26) is fixedly connected to the slide plate (22), and the outer end is capable of passing through the side wall of the socket (21).

9. A submarine cable fault monitoring device according to claim 8, characterized in that: A driving member is arranged at the upper end of each socket (21); the driving member comprises a threaded sleeve (27) arranged on the cover body (2); a threaded rod (28) is internally threadedly connected to the threaded sleeve (27); a handle (30) is connected to the top end of the threaded rod (28); a push block (29) is rotatably connected to the bottom end of the threaded rod (28); and the push block (29) is slidably connected to the upper end of the slide plate (22).

10. A monitoring method based on the submarine cable fault monitoring device according to claim 1, characterized in that: The following steps are involved: The bottom plate (1) is fixed to the seabed by a reinforcement mechanism, and the flow of seawater generates thrust on the propeller (18), which pushes the movable plate (14) and the connecting shaft (15) to move toward the inside of the cover (2) until the movable plate (14) contacts the block ring (20) and the main bevel gear (16) and the slave bevel gear (17) at the end of the connecting shaft (15) are meshed; the seawater drives the propeller (18) to rotate, driving the connecting shaft (15) to rotate, and then driving the main bevel gear (16) and the slave bevel gear (17) to rotate, and the slave bevel gear (17) drives the power conversion mechanism to swing, and the swing component drives the rotating shaft (3) to rotate, and then drives the monitoring component to rotate.

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