Supporting and protecting device for submarine cable

Abstract

The present invention relates to the technical field of submarine cable installation, and specifically relates to a supporting and protecting device for a submarine cable, comprising a protective shell, wherein a cable passes through the interior of the protective shell; a supporting member is provided inside the protective shell, the supporting member being configured to support and limit the cable passing through; and the left and right sides of the protective shell are each provided with a multifunctional panel assembly, which comprises an outer panel and an inner panel, both the outer panel and the inner panel being rotatably folded inside the protective shell; during the process of laying the cable on the seabed, the outer panels are rotated and unfolded to increase the coverage area of the protective shell. In the present invention, when the cable reaches a sandy and muddy area at the seabed, rotating and unfolding the outer panels can control limiting portions to be inserted deep into sand and mud, and the limiting portions on the left and right sides of the protective shell are in an inward-fastening position to grip the sand and mud at the bottom of the protective shell, providing a stable supporting force for the protective shell, and reducing the magnitude of movement of the protective shell caused by an external impact; in addition, the outer panels unfold quickly and are easy to use.

Description

A support and protection device for submarine cables Technical Field

[0001] This invention relates to the field of submarine cable installation technology, and more specifically to a support and protection device for submarine cables. Background Technology

[0002] Submarine cables are cables wrapped in insulating materials and laid on the seabed for telecommunications transmission. In areas of tectonic plate movement, natural disasters such as earthquakes and tsunamis often occur, exerting concentrated forces on submarine cables laid in these areas, leading to cable breakage. In areas with strong seabed currents, the long-term erosion of seabed silt by the currents can eventually cause submarine cables to become suspended, breaking under the force of the lateral current. In addition, human activities can also damage cables; ship anchoring is one of the main causes of submarine cable damage. Furthermore, during the laying of submarine cables, it is common to encounter unfavorable seabed conditions such as bedrock, making it impossible to lay the cables underground and providing insufficient protection.

[0003] Patent document CN115833021B discloses a submarine cable fixing device, including a protective shell and protective plates rotatably connected to the upper ends of both sides of the protective shell. The protective plates are connected to the outer side wall of the protective shell through elastic elements. A cover plate is detachably connected to the upper end of the protective shell. A fixing rod is provided at the lower end of the protective shell. The fixing rod has a fixing cavity inside. The cavity wall of the fixing cavity has piercing holes. The fixing cavity has multiple fixing spikes inside. The fixing spikes enter and exit the piercing holes through a driving mechanism. This invention can improve the fixing effect of submarine cables. Technical issues

[0004] To address the impact of ship anchors on cables, the aforementioned solution involves installing a protective shell around the cable. This shell is secured by anchoring rods inserted into the seabed sand. However, this method relies on the depth of the anchoring rods, which presents two drawbacks. First, the active insertion of the anchoring rods, whether manual or electric, is cumbersome and time-consuming due to the long length of the submarine cable and the segmented installation of the fixing device. Second, because the seabed sand is soft, relying solely on a few anchoring rods at a few points to secure the protective shell to the seabed can lead to instability. Technical solutions

[0005] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a support and protection device for submarine cables, which solves the problem that the installation of external protection devices for submarine cables is cumbersome and cannot provide sufficient support and protection for the cables themselves during the current installation and use of submarine cables.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A support and protection device for submarine cables includes a protective shell through which the cable passes. A support member is provided inside the protective shell to support and limit the cable passing through.

[0008] The protective shell is provided with multi-functional plate assemblies on both the left and right sides. The multi-functional plate assembly includes an outer plate and an inner plate, and both the outer plate and the inner plate can be rotatably stored inside the protective shell.

[0009] During the cable placement process on the seabed, the outer plate is rotated and unfolded to increase the coverage area of ​​the protective shell. After the cable reaches the seabed, a limiting part is also provided on the outer plate. The limiting part is used to insert into the seabed sand and mud to limit and fix the protective shell. The outer plate and inner plate are rotated and unfolded in sequence to inspect and maintain the cable inside the protective shell.

[0010] Furthermore, the two adjacent protective shells are movably connected by a connecting assembly. The connecting assembly includes a mounting plate one and a mounting plate two respectively installed at the middle of the adjacent parts of the two protective shells. A rotating shaft is rotatably provided on the mounting plate one, and a strip-shaped through hole one is vertically opened through the middle of the rotating shaft. A mounting hole is opened on the mounting plate two, and the mounting plate two is sleeved on the outside of the rotating shaft through the mounting hole. A bolt one is threadedly connected in the mounting hole corresponding to the position of the strip-shaped through hole one.

[0011] Furthermore, the connecting assembly also includes a plug rod and a sleeve rod respectively installed at the adjacent positions on both sides of the two protective shells. The sleeve rod has an movable notch for accommodating the movement of the plug rod inside the sleeve rod. The middle parts of the plug rod and the sleeve rod are respectively provided with a strip-shaped through hole two and a strip-shaped through hole three. When the plug rod is inserted into the movable notch, a bolt two is threadedly connected at the position where the strip-shaped through hole two and the strip-shaped through hole three coincide.

[0012] Furthermore, the support member has a rectangular cross-section and includes a central part and four corner parts. The central part is located at the center of the rectangular structure, and the four corner parts are located at the four corners of the rectangular structure. The distance between two adjacent corner parts is equal to the internal height of the protective shell. The corner parts and the central part are connected by connecting parts. The four connecting parts divide the outside of the central part into four non-communicating slots, and the cable is confined within the slots.

[0013] Furthermore, the protective shell has mounting grooves on both the left and right sides for accommodating the outer plate and the inner plate. The inner plate is embedded inside the outer plate, and both the inner plate and the outer plate are rotatably connected to a fixed shaft located at the bottom of the mounting groove. The inner side of the mounting groove is also provided with a stop to restrict the inner plate and the outer plate from further rotating and retracting into the protective shell.

[0014] Furthermore, the outer plate is rotatably connected to the fixed shafts on both sides of the bottom of the mounting groove via connecting ears on both sides of its bottom. The top of the outer plate is provided with the limiting part, and the middle of the inner wall of the outer plate is provided with a receiving groove that matches the size of the inner plate. The inner walls of the outer plate are provided with receiving grooves on both sides.

[0015] Furthermore, the inner plate is rotatably connected to the fixed shaft at the bottom center of the mounting groove via a connecting lug 2 at the center of its bottom, and extension plates matching the size of the receiving groove 2 are provided on both sides of the inner plate.

[0016] Furthermore, a groove is formed on the surface of the protective shell corresponding to the edge of the outer plate. A limiting component is provided in the groove. The limiting component includes a fixed rod disposed inside the groove. A sliding component is slidably sleeved on the outside of the fixed rod. The top of the sliding component extends upward out of the groove and is rotatably connected to a limiting plate. A torsion spring is provided at the rotatable connection. The horizontal height of the limiting plate is higher than that of the outer plate when it is in the unfolded state. A return spring is also sleeved on the outside of the fixed rod. A limiting groove matching the size of the limiting plate is formed on the limiting part. Under the action of the return spring, the limiting plate is inserted into the limiting groove to limit the outer plate.

[0017] Furthermore, a support assembly is provided between the inner plate and the outer plate. The support assembly includes a main body and a sliding rod. A movable groove is provided in the middle of the main body. Locking parts are provided at both the upper and lower ends of the main body. The sliding rod can pass through the locking parts along the length direction of the main body and enter the movable groove. A rotating ear is connected to one end of the sliding rod that is exposed outside the movable groove. The rotating ears at the ends of the two sliding rods are respectively rotatably connected to a rotating component one on the outer plate and a rotating component two on the inner plate.

[0018] The slide bar has multiple toothed grooves evenly spaced on its body. Rotating grooves are provided on both sides of the locking part corresponding to the positions through which the slide bar passes. A locking block is rotatably connected in the rotating groove. A torsion spring is provided at the rotating connection. The locking block limits the sliding direction of the slide bar under the action of the torsion spring.

[0019] Furthermore, the surface of the protective shell is provided with a sensor for monitoring the pressure. Beneficial effects

[0020] 1. Compared with traditional methods, this technical solution has a support component inside the protective shell. The support component can classify and limit the cables while providing vertical support to the hollow protective shell, thereby improving its pressure and impact resistance.

[0021] 2. In this solution, adjacent protective shells are movably connected by connecting components, which can ensure a certain connection strength and provide multi-angle rotation space, avoiding the cable damage caused by rigid contact due to the inability to dissipate force when adjacent protective shells are fully subjected to the impact of the seabed current.

[0022] 3. The multi-functional panel assembly in this solution can serve different purposes in different states when the cable is placed in the sea. Before the cable is lowered from the ship to the seabed, the changes in ocean currents are detected in advance to determine whether the cable's descent speed needs to be accelerated or slowed down. When the descent speed needs to be slowed down, the outer panel can be rotated and unfolded to increase the coverage area of ​​the protective shell, thereby increasing the resistance of the cable as it falls into the sea and slowing down the descent speed. Conversely, the support assembly can effectively prevent the unfolded outer panel from automatically retracting. After the cable has been lowered to the seabed, the inner panel can be rotated and opened to inspect the cable inside the protective shell and ensure that the cable is in normal condition.

[0023] 4. When the cable reaches the seabed sand and mud, rotating the outer plate can control the limiting part to insert deep into the sand and mud. The limiting parts on the left and right sides of the protective shell are inwardly clamped into the sand and mud at the bottom of the protective shell, which can provide stable support for the protective shell, reduce the range of movement of the protective shell due to external impact, and the unfolding process of the outer plate is relatively quick and convenient to use. Attached Figure Description

[0024] Figure 1 is a perspective view of the two submarine cable support and protection devices in the present invention when they are connected.

[0025] Figure 2 is a side view of the two submarine cable support and protection devices in the present invention when they are connected.

[0026] Figure 3 is a perspective view of the protective shell, mounting plate 1, and insertion rod in this invention.

[0027] Figure 4 is a perspective view of the protective shell, mounting plate 2, and sleeve rod in this invention.

[0028] Figure 5 is a perspective view of the multi-functional board assembly housed inside the protective shell in this invention.

[0029] Figure 6 is a perspective view of the multi-functional panel assembly unfolded outside the protective shell in this invention.

[0030] Figure 7 is a front view of the multi-functional panel assembly unfolded outside the protective shell in this invention.

[0031] Figure 8 is a perspective view of the support member in this invention.

[0032] Figure 9 is a perspective view of the protective shell in this invention.

[0033] Figure 10 is a perspective view of the protective shell in this invention.

[0034] Figure 11 is a magnified view of part A in Figure 10.

[0035] Figure 12 is a perspective view of the slider and the limiting plate in this invention.

[0036] Figure 13 is a perspective view of the outer and inner panels in the combined state in this invention.

[0037] Figure 14 is a perspective view of the outer and inner panels in the combined state in this invention.

[0038] Figure 15 is a perspective view of the outer plate in this invention.

[0039] Figure 16 is a perspective view of the inner plate in this invention.

[0040] Figure 17 is a perspective view of the inner plate in this invention.

[0041] Figure 18 is a perspective view of the support component in this invention.

[0042] Figure 19 is a magnified view of part B in Figure 18.

[0043] In the diagram: 1. Protective shell; 11. Mounting groove; 12. Mounting strip; 13. Stop block; 14. Fixed shaft; 15. Slide groove; 2. Support component; 21. Center part; 22. Corner part; 23. Connecting part; 24. Slot; 25. Cut groove; 3. Connecting assembly; 31. Mounting plate one; 311. Rotating shaft; 312. Strip through hole one; 32. Insert rod; 321. Strip through hole two; 33. Mounting plate two; 331. Mounting hole; 332. Bolt one; 34. Sleeve rod; 341. Movable notch; 342. Strip through hole three; 343. Bolt two; 4. Multifunctional plate assembly; 41. Outer plate; 4 11. Connecting ear 1; 412. Limiting part; 413. Receiving groove 1; 414. Receiving groove 2; 415. Rotating part 1; 416. Limiting groove; 42. Inner plate; 421. Connecting ear 2; 422. Extension plate; 423. Storage groove; 424. Rotating part 2; 43. Locking groove; 5. Limiting part; 51. Fixing rod; 52. Return spring; 53. Sliding part; 54. Limiting plate; 6. Support assembly; 61. Main body; 62. Movable groove; 63. Locking part; 631. Rotating groove; 632. Locking block; 64. Slide rod; 641. Tooth groove; 65. Rotating ear; 7. Sensor. The best embodiment of the present invention

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0045] Example 1: As shown in Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, and 19, a support and protection device for submarine cables includes a protective shell 1. The cable passes through the inside of the protective shell 1. A support member 2 is provided inside the protective shell 1 to support and limit the cable passing through.

[0046] In this embodiment, the protective shell 1 has a trapezoidal structure that is narrower at the top and wider at the bottom. The protective shell 1 has openings at both ends, and the cable and the support member 2 can be installed into the protective shell 1 from both ends. The top and bottom of the trapezoidal protective shell 1 are sloped. When the protective shell 1 is installed on the seabed, even if an anchor comes into contact with the protective shell 1, the anchor will first come into contact with the sloped surfaces on both sides of the protective shell 1. The sloped surfaces can disperse the force applied to the protective shell 1 by the anchor chain or anchor claw. Through the design of the sloped surfaces, the direct impact force of the anchor on the cable and the protective shell 1 can be reduced, the stress on the cable and the protective shell 1 can be reduced, and the risk of cable damage can be reduced.

[0047] As shown in Figures 1 and 2, the protective shell 1 is provided with a multi-functional plate assembly 4 on both the left and right sides. The multi-functional plate assembly 4 includes an outer plate 41 and an inner plate 42, both of which can be rotatably stored inside the protective shell 1.

[0048] As shown in Figures 5, 6, and 7, when the cable is lowered into the seabed, rotating and unfolding the outer plate 41 increases the coverage area of ​​the protective shell 1, thereby providing greater resistance as the protective shell 1 falls into the sea and reducing the speed at which the cable and the protective shell 1 fall into the seabed. After the cable reaches the seabed, the outer plate 41 is also provided with a limiting part 412, which is used to insert into the seabed sand and mud to limit and fix the protective shell 1. After the outer plate 41 is unfolded, the inner plate 42 can be rotated and unfolded to inspect and maintain the cable inside the protective shell 1.

[0049] As shown in Figures 5, 6, 9, and 10, the protective shell 1 has mounting grooves 11 on both the left and right sides for accommodating the outer plate 41 and the inner plate 42. The mounting grooves 11 are opened on the inclined surface of the trapezoidal structure. When the outer plate 41 and the inner plate 42 are not unfolded, the surface of the outer plate 41 is parallel to the inclined surface. The outer plate 41 and the inner plate 42 adopt a nested structure, with the inner plate 42 embedded inside the outer plate 41. This effectively reduces the thickness of the outer plate 41 and the inner plate 42 when they are in the stored state, and the internal volume ratio of the protective shell 1 can be further improved, which is beneficial for cable installation.

[0050] As shown in Figures 9, 10, 13, and 14, both the inner plate 42 and the outer plate 41 are rotatably connected to the fixed shafts 14 located at the bottom of the mounting groove 11. There are three fixed shafts 14 in total. The outer plate 41 is rotatably connected to the fixed shafts 14 on both sides of the bottom of the mounting groove 11 via connecting ears 411 on both sides of its bottom, while the inner plate 42 is rotatably connected to the fixed shaft 14 in the middle of the bottom of the mounting groove 11 via connecting ears 421 in the middle of its bottom. Further observation of Figures 15, 16, and 17 shows that on the inner wall of the outer plate 41... The inner plate 42 has a receiving groove 413 in the middle that matches its size. The inner wall of the outer plate 41 has receiving grooves 414 on both sides. The top of the receiving groove 413 is not through, but the bottom of the receiving groove 413 is through. The inner plate 42 has the same size and dimensions as the receiving groove 413. Therefore, the three fixed shafts 14 have the same axis. However, since the connecting ear 411 and the connecting ear 421 are misaligned, the outer plate 41 and the inner plate 42 can have the same axis of rotation, but they will not collide with each other when rotating.

[0051] In addition, extension plates 422 matching the size of the second accommodating groove 414 are provided on both sides of the inner plate 42. Since the connecting ears 411 need to be installed on both sides of the bottom of the outer plate 41, these two positions need to have a certain thickness, otherwise the connecting ears 411 cannot be installed. Therefore, a step will be formed between the first accommodating groove 413 and the second accommodating groove 414. The extension plate 422 must be designed to correspond to this step. Otherwise, when the outer plate 41 is rotated to open, gaps will be formed on the left and right sides of the inner plate 42, which cannot achieve the effect of preventing external objects or impurities from entering the interior of the protective shell 1.

[0052] In this embodiment, a stop block 13 is provided on the inner side of the mounting groove 11 to restrict the inner plate 42 and the outer plate 41 from further rotating and retracting into the protective shell 1. Locking grooves 43 matching the size of the stop block 13 are provided on the inner walls of the outer plate 41 and the inner plate 42. When the locking groove 43 is engaged with the stop block 13, the outer plate 41 and the inner plate 42 are retracted into the mounting groove 11.

[0053] As shown in Figures 6, 7, and 15, a limiting part 412 is provided at the top of the outer plate 41. The angle between the limiting part 412 and the outer plate 41 is between 30° and 145°. Thus, after the outer plates 41 on both sides of the protective shell 1 are rotated and unfolded, the limiting parts 412 on both sides are inwardly clamped to the sand and mud at the bottom of the protective shell 1. Even if there is an external impact, since the limiting parts 412 on both sides of the protective shell 1 are inserted into the sand and mud from different angles, and the length of the limiting part 412 matches the outer plate 41, the resistance when the protective shell 1 moves is large. Therefore, it can provide stable support for the protective shell 1 and reduce the amplitude of movement of the protective shell 1 due to external impact.

[0054] Furthermore, due to the significant variations in the intensity of ocean currents caused by drag, pressure differences, and eddy currents, and the fact that cables are lowered into the sea segment by segment by segment while the ship is in motion, it is necessary to pre-survey the changes in ocean currents to determine whether the cable's descent speed needs to be increased or decreased. When it is necessary to slow down the cable's descent speed, the outer plate 41 can be rotated and unfolded to increase the coverage area of ​​the protective shell 1, thereby increasing the resistance to the cable's descent and slowing down its descent speed. Conversely, the same applies. This structural design reduces the stress on the cable during placement, minimizing the risk of damage due to excessive stress. It also improves installation efficiency. Controlling the cable's descent speed based on changes in ocean current intensity allows for more precise control of the cable's position and arrangement, improving installation efficiency, reducing problems and risks during installation, and ensuring the reliability and safety of the entire submarine cable system.

[0055] In addition, since the limiting part 412 is inserted into the seabed sand and mud, the outer plate 41 and the protective shell 1 are also inclined, which can reduce the direct impact force of the anchor on the cable and the protective shell 1, and reduce the risk of cable damage.

[0056] In this embodiment, after the cable has fallen to the seabed and the outer plate 41 has been rotated and unfolded, the inner plate 42 can be opened by continuing to rotate. At this time, the cable inside the protective shell 1 can be inspected to ensure that the cable is in normal condition. When inspection is not required, the inner plate 42 is closed to prevent foreign objects in the ocean from directly impacting the cable under the action of ocean currents, thus providing protection for the cable.

[0057] As shown in Figures 6, 7, 10, 11, and 12, a groove 15 is provided on the surface of the protective shell 1 at the position corresponding to the edge of the outer plate 41. A limiting member 5 is provided in the groove 15. The limiting member 5 includes a fixed rod 51 provided inside the groove 15. The fixed rod 51 is a round rod. A sliding member 53 is slidably sleeved on the outside of the fixed rod 51. The top of the sliding member 53 extends upward out of the groove 15 and is rotatably connected to the limiting plate 54. A torsion spring is provided at this rotatable connection.

[0058] When the outer plate 41 and the inner plate 42 are not unfolded, the horizontal height of the limit plate 54 is higher than that of the outer plate 41. Since a limit groove 416 matching the size of the limit plate 54 is provided on the limit portion 412, a return spring 52 is also sleeved outside the fixing rod 51. Under the action of the return spring 52, the limit plate 54 will actively insert into the limit groove 416 to limit the outer plate 41. At this time, neither the outer plate 41 nor the inner plate 42 can be rotated and unfolded. When unfolding is required, the slider 53 can be moved in the reverse direction with respect to the fixing rod 51, and the return spring 52 is compressed. At this time, the outer plate 41 and the inner plate 42 can be normally rotated and unfolded. When the outer plate 41 itself is in the unfolded state and the inner plate 42 needs to be closed at this time, the inner plate 42 is rotated towards the installation groove 11. When the inner plate 42 contacts the limit plate 54, the limit plate 54 rotates towards the bottom of the slider 53 under the action of the torsion spring until the horizontal height of the top of the inner plate 42 is lower than that of the limit plate 54. After the inner plate 42 is received into the installation groove 11, the limit plate 54 automatically resets under the action of the torsion spring, and the limit plate 54 is flush with the top of the slider 53 and no longer rotates. At this time, the limit of the inner plate 42 alone is completed.

[0059] As shown in FIGS. 6, 7, 15, 16, and 17, two support assemblies 6 are provided between the inner plate 42 and the outer plate 41, and are respectively arranged on the left and right sides of the inner plate 42 and the outer plate 41. The inner plate 42 is provided with a receiving groove 423 at the position corresponding to the support assembly 6. After the inner plate 42 and the outer plate 41 are fitted, the support assembly 6 is received into the receiving groove 423, and will not cause interference to the fitting of the inner plate 42 and the outer plate 41.

[0060] As shown in FIGS. 18 and 19, the support assembly 6 includes a main body 61 and a slide rod 64. An activity groove 62 is provided in the middle of the main body 61. Locking portions 63 are provided at both the upper and lower ends of the main body 61. The locking portions 63 and the main body 61 are of an integral structure. The slide rod 64 can pass through the locking portion 63 along the length direction of the main body 61 and enter the inside of the activity groove 62. A rotating ear 65 is connected to the end of the slide rod 64 exposed outside the activity groove 62. The rotating ears 65 at the ends of the two slide rods 64 are respectively rotatably connected to a first rotating member 415 on the outer plate 41 and a second rotating member 424 on the inner plate 42. Among them, the first rotating member 415 is a "U"-shaped rod, and the first rotating member 415 is arranged on the inner wall of the first accommodating groove 413. One rotating ear 65 is rotatably connected to the crossbar portion of the first rotating member 415. The second rotating member 424 is a round rod, which is arranged inside the receiving groove 423, and the other rotating ear 65 is rotatably connected to the round rod.

[0061] Multiple toothed grooves 641 are evenly spaced along the body of the slide rod 64, with the openings of all the grooves 641 facing the same direction. Rotating grooves 631 are provided on both sides of the locking part 63 at the points where the slide rod 64 passes through. A locking block 632 is rotatably connected within each rotating groove 631, and a torsion spring is installed at this rotatable connection. The locking block 632 matches the size of the toothed groove 641, and under the action of the torsion spring, the locking block 632 limits the sliding direction of the slide rod 64. Specifically, when the outer plate 41 is rotated alone, the slide rods 64 at both ends of the main body 61 slide outwards in opposite directions. During the extension process, the locking block 632 does not engage with the toothed groove 641. When the outer plate 41 needs to be retracted, the locking block 632 engages with the toothed groove 641 at the corresponding position under the action of the torsion spring. At this time, the slide rod 64 cannot slide directly into the movable groove 62. It is necessary to rotate the locking block 632 at the corresponding position in the opposite direction so that it is no longer engaged with the toothed groove 641. At this time, the slide rod 64 can be smoothly slid into the movable groove 62 along the locking part 63. The support component 6 provides a reliable guarantee for increasing the cable diving resistance when the outer plate 41 is unfolded, and can effectively prevent the accidental rotation of the outer plate 41.

[0062] As shown in Figure 4, in this embodiment, the surface of the protective shell 1 is equipped with a sensor 7 for monitoring the pressure. When adjacent protective shells 1 are rigidly in contact due to the action of ocean currents, or when adjacent protective shells 1 are bent and in contact due to gaps in the sand and mud at the bottom of the protective shell 1, or when other heavy objects directly impact the protective shell 1, the sensor 7 can provide data on the compression and provide an alarm. Remote personnel can monitor the status of the submarine cable in a timely manner and handle it according to the pre-planned procedure through the alarm information.

[0063] Example 2: As shown in Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, and 19, a support and protection device for submarine cables includes a protective shell 1. The cable passes through the interior of the protective shell 1. A support member 2 is provided inside the protective shell 1 to support and limit the cable passing through. Compared with Example 1:

[0064] As shown in Figures 2, 3, and 4, two adjacent protective shells 1 are movably connected by a connecting assembly 3. The connecting assembly 3 includes a mounting plate 31 and a mounting plate 33 respectively installed at the midpoint of the two protective shells 1. A rotating shaft 311 is rotatably provided on the mounting plate 311, and a strip-shaped through hole 312 is vertically opened through the middle of the rotating shaft 311. A mounting hole 331 is opened on the mounting plate 33, and the mounting plate 33 is sleeved on the outside of the rotating shaft 311 through the mounting hole 331. A bolt 332 is threadedly connected in the mounting hole 331 at the position corresponding to the strip-shaped through hole 312. The mounting plate 33 and the rotating shaft 311 are locked together by the bolt 332. When the ocean current affects the protective shells 1, the adjacent protective shells 1 can rotate left and right about the rotating shaft 311, and can swing up and down under the action of the bolt 332 and the strip-shaped through hole 312, so as to avoid the ocean current force directly and rigidly acting on the connection between the adjacent protective shells 1.

[0065] In this embodiment, the connecting component 3 also includes a plug rod 32 and a sleeve rod 34 respectively installed at the adjacent positions on both sides of the two protective shells 1. The sleeve rod 34 has an movable notch 341 for accommodating the plug rod 32 to move inside the sleeve rod 34. The plug rod 32 and the sleeve rod 34 are respectively transversely provided with a strip-shaped through hole 321 and a strip-shaped through hole 342. When the plug rod 32 is inserted into the movable notch 341, a bolt 343 is threadedly connected at the position where the strip-shaped through hole 321 and the strip-shaped through hole 342 overlap. When the ocean current force acts on the protective shell 1, the plug rod 32 and the sleeve rod 34 on both sides can also achieve multi-angle rotation through their cooperation. The plug rod 32 can swing up and down about the bolt 343. Since the internal space of the movable notch 341 is larger than the plug rod 32, the plug rod 32 can also swing left and right at a certain angle.

[0066] This solution uses a connecting component 3 to connect adjacent protective shells 1, which can ensure a certain connection strength and provide multi-angle rotation space. This avoids the cable being damaged due to rigid contact caused by the inability to dissipate the force when adjacent protective shells 1 are fully subjected to the impact of the seabed current.

[0067] Example 3: As shown in Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, and 19, a support and protection device for submarine cables includes a protective shell 1. The cable passes through the interior of the protective shell 1. A support member 2 is provided inside the protective shell 1 to support and limit the cable passing through. Compared with Example 1:

[0068] As shown in Figures 7, 8, and 10, the cross-section of the support member 2 is rectangular. The support member 2 includes a central part 21 and four corner parts 22. The central part 21 is located at the center of the rectangular structure, and the four corner parts 22 are located at the four corners of the rectangular structure. The distance between two adjacent corner parts 22 is equal to the internal height of the protective shell 1. The corner parts 22 are connected to the central part 21 through connecting parts 23. The four connecting parts 23 divide the outside of the central part 21 into four non-communicating slots 24, and the cable is confined within the slots 24.

[0069] The corners of the four corners 22 are all chamfered. The bottom and top surfaces of the inner wall of the protective shell 1 are equipped with mounting strips 12. The mounting strips 12 are triangular in structure and can be used to position the support 2.

[0070] This solution includes a support member 2 inside the protective shell 1. The support member 2 not only classifies and limits the cables, but also provides vertical support to the hollow protective shell 1, thereby improving its resistance to pressure and impact.

[0071] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," 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. In this specification, illustrative expressions of the above terms do not necessarily refer 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. Industrial applicability

[0072] This invention has been implemented and has industrial applicability.

Claims

1. A support and protection device for submarine cables, comprising a protective shell through which the cable passes, characterized in that, The protective shell has an internal support member for supporting and limiting the passage of cables. Multifunctional panel assemblies, comprising an outer panel and an inner panel, are located on both the left and right sides of the protective shell. Both the outer and inner panels are rotatably retractable into the protective shell. Mounting slots for accommodating the outer and inner panels are provided on both the left and right sides of the protective shell, with the inner panel embedded within the outer panel. Both the inner and outer panels are rotatably connected to a fixed shaft at the bottom of the mounting slot. A stop is provided inside the mounting slot to restrict further rotation of the inner and outer panels into the protective shell. A support assembly, comprising a main body and a sliding rod, is located between the inner and outer panels. The main body has a movable groove in the middle and locking parts at both the upper and lower ends. The sliding rod can move along the length of the main body. The sliding rod passes through the locking part and enters the movable groove. One end of the sliding rod protruding from the movable groove is connected to a rotating lug. The rotating lugs at the ends of the two sliding rods are respectively rotatably connected to rotating component one on the outer plate and rotating component two on the inner plate. The sliding rod body has multiple equally spaced toothed grooves. Rotating grooves are provided on both sides of the locking part corresponding to the positions where the sliding rod passes through. A locking block is rotatably connected within each rotating groove, and a torsion spring is provided at the rotatable connection. The locking block, under the action of the torsion spring, limits the sliding direction of the sliding rod. During the cable placement on the seabed, the outer plate is rotated and unfolded to increase the coverage area of ​​the protective shell. After the cable reaches the seabed, a limiting part is also provided on the outer plate. This limiting part is used to insert into the seabed sand and mud to limit and fix the protective shell. The outer plate and inner plate are rotated and unfolded sequentially for the inspection and maintenance of the cable inside the protective shell.

2. The support and protection device for submarine cables according to claim 1, characterized in that, The two adjacent protective shells are movably connected by a connecting assembly. The connecting assembly includes a mounting plate one and a mounting plate two respectively installed at the middle of the adjacent parts of the two protective shells. A rotating shaft is rotatably provided on the mounting plate one. A strip-shaped through hole is vertically opened in the middle of the rotating shaft. A mounting hole is opened on the mounting plate two. The mounting plate two is sleeved on the outside of the rotating shaft through the mounting hole. A bolt is threadedly connected in the mounting hole at the position corresponding to the strip-shaped through hole one.

3. A support and protection device for submarine cables according to claim 2, characterized in that, The connecting assembly also includes a plug rod and a sleeve rod respectively installed at the adjacent positions on both sides of the two protective shells. The sleeve rod has an movable notch for accommodating the movement of the plug rod inside the sleeve rod. The middle part of the plug rod and the sleeve rod are respectively provided with a strip-shaped through hole two and a strip-shaped through hole three. When the plug rod is inserted into the movable notch, a bolt two is threadedly connected at the position where the strip-shaped through hole two and the strip-shaped through hole three coincide.

4. A support and protection device for submarine cables according to claim 1 or claim 2, characterized in that, The support member has a rectangular cross-section and includes a central part and four corner parts. The central part is located at the center of the rectangular structure, and the four corner parts are located at the four corners of the rectangular structure. The distance between two adjacent corner parts is equal to the internal height of the protective shell. The corner parts and the central part are connected by connecting parts. The four connecting parts divide the outside of the central part into four non-communicating slots, and the cable is confined within the slots.

5. A support and protection device for submarine cables according to claim 1 or claim 2, characterized in that, The outer plate is rotatably connected to the fixed shafts on both sides of the bottom of the mounting groove via connecting ears on both sides of its bottom. The top of the outer plate is provided with the limiting part. The middle of the inner wall of the outer plate is provided with a receiving groove that matches the size of the inner plate. The two sides of the inner wall of the outer plate are provided with receiving grooves.

6. A support and protection device for submarine cables according to claim 5, characterized in that, The inner plate is rotatably connected to the fixed shaft at the bottom center of the mounting groove via a connecting lug 2 at the center of its bottom. Extension plates matching the size of the receiving groove 2 are provided on both sides of the inner plate.

7. A support and protection device for submarine cables according to claim 1 or claim 2, characterized in that, The protective shell has a groove on its surface corresponding to the edge of the outer plate. A limiting component is provided in the groove. The limiting component includes a fixed rod disposed inside the groove. A sliding component is slidably sleeved on the outside of the fixed rod. The top of the sliding component extends upward out of the groove and is rotatably connected to a limiting plate. A torsion spring is provided at the rotatable connection. The horizontal height of the limiting plate is higher than that of the outer plate when it is in the unfolded state. A return spring is also sleeved on the outside of the fixed rod. A limiting groove matching the size of the limiting plate is provided on the limiting part. Under the action of the return spring, the limiting plate is inserted into the limiting groove to limit the outer plate.

8. A support and protection device for submarine cables according to claim 1 or claim 2, characterized in that, The surface of the protective shell is equipped with sensors for monitoring pressure.

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