A submarine cable fixing structure for submarine cable laying
By using an ocean current drive system and a dynamic clamping device in the submarine cable fixing structure, the anchoring problem of exposed sections of submarine cable terminals in harsh environments is solved, providing continuous clamping force and enhanced anchoring force, avoiding cable slippage and damage, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DEKING GRP CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-07
AI Technical Summary
Existing technologies struggle to provide continuous, adaptive clamping force on exposed sections of submarine cables, and their anchoring force is insufficient on soft seabeds, making them unable to effectively resist ocean current drag and displacement. Furthermore, traditional devices are prone to damaging submarine cables and are costly.
A submarine cable fixing structure is adopted, which uses ocean currents to drive an impeller to drive a rotating shaft and gear system. The submarine cable is clamped by a dynamic sector plate and the anchoring force is enhanced on the soft seabed by a high-frequency plug-in plate. Combined with anti-slip surface and elastic components, it provides continuous clamping and anchoring.
It achieves continuous, adaptive clamping and firm anchoring of submarine cables in harsh environments, preventing slippage and damage, and reducing the cost and maintenance difficulty of the device.
Smart Images
Figure CN224473032U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of submarine cable laying technology, specifically relating to a submarine cable fixing structure for submarine cable laying. Background Technology
[0002] With the deepening of marine resource development and the rapid development of marine engineering projects such as offshore wind power, island grid interconnection, and marine observation, submarine cables, as a key carrier for marine power transmission and communication, are being used more and more widely. In conventional submarine cable laying projects, in order to ensure the long-term safe operation of submarine cables and avoid external damage (such as fishing activities, anchoring, etc.), the main body of the submarine cable is usually buried at a depth of 2.5 to 3 meters below the seabed.
[0003] However, in the terminal areas of submarine cable systems, such as near landing points, offshore platforms, or buoy connection points, there are unavoidable exposed sections. These exposed terminal sections cannot be deeply buried due to engineering limitations or functional requirements (such as connection and maintenance) and must be directly exposed and fixed to the seabed. This unique application scenario presents these exposed terminal sections with more severe environmental challenges:
[0004] Currently, traditional devices used to secure exposed sections of submarine cables at such terminals mainly rely on gravity anchors or mechanical clips for static fixation. These devices have the following significant drawbacks, making it difficult to meet the long-term stability requirements under harsh exposure environments:
[0005] Weak resistance to ocean currents: Static structures are unable to withstand the continuous and direct impact of ocean currents on exposed submarine cables and fixed devices, which can easily lead to relative slippage between the submarine cable and the fixed structure, accelerating sheath wear and even breakage.
[0006] Insufficient anchoring force: In soft or easily eroded seabed geological conditions (common in nearshore areas), conventional anchor rods or blocks rely on their own weight to penetrate, resulting in limited anchoring depth. They are extremely prone to overall displacement or even overturning due to seabed erosion or local scouring, endangering the safety of submarine cables.
[0007] Poor adaptability: The fixing structure cannot dynamically adjust the clamping force and anchoring state according to changes in the diameter of the submarine cable or the micro-topography of the seabed. If the clamping is too tight, it will damage the cable insulation layer, and if it is too loose, it will not effectively prevent slippage. The anchoring device is also difficult to adapt to different seabed conditions.
[0008] Dependence on external energy sources: Some active fixed devices (such as hydraulic drives) require electric power. Power supply and maintenance costs are extremely high in remote or deep-sea terminal locations, and reliability is difficult to guarantee.
[0009] To address this, we propose a submarine cable fixing structure for submarine cable laying. This device is particularly suitable for fixing exposed sections of submarine cable terminals. It not only provides continuous and adaptive clamping force with good clamping effect and no damage to the cable body, but also significantly increases the anchoring force on soft seabed, firmly anchoring the entire device to the seabed and effectively resisting ocean current dragging and displacement risks. Utility Model Content
[0010] The purpose of this utility model is to provide a submarine cable fixing structure for laying submarine cables. This device can not only provide continuous clamping force and have a good clamping effect, but also increase the anchoring force, firmly anchoring the entire device to the seabed and resisting ocean current drag.
[0011] The specific technical solution adopted by this utility model is as follows:
[0012] A submarine cable fixing structure for laying submarine cables includes a hollow bracket with a semi-circular groove for placing the submarine cable. Multiple through holes are formed in the inner wall of the semi-circular groove, and a movable component is installed inside each through hole. The movable component has a first sector-shaped plate and an arc-shaped fixing plate. A rotating shaft is installed inside the hollow bracket, with one end of the rotating shaft passing through the hollow bracket and fitted with a current-driven impeller. Multiple second sector-shaped plates and multiple first bevel gears are fixedly installed on the rotating shaft. Multiple mounting holes are formed at the bottom of the hollow bracket. A hollow insert rod is provided inside the mounting hole. A rotating hole is provided on the hollow insert rod. A rotating rod is provided inside the rotating hole. A second bevel gear that meshes with the first bevel gear is provided at the top of the rotating rod. Multiple uneven rotating disks are provided inside the hollow insert rod. Multiple sets of U-shaped frames and through slots are provided on the inner wall of the hollow insert rod. Each U-shaped frame is provided with an elastic component. The elastic component is provided with a pulley and an insert plate. The insert plate is located inside the through slot. The pulley rolls on the outside of the rotating disk.
[0013] Furthermore, a semi-circular cover plate is bolted to the top of the hollow bracket.
[0014] Furthermore, the movable component includes a movable rod disposed inside the through hole, one end of the movable rod being connected to the first sector plate, the other end of the movable rod being connected to the arc-shaped fixed plate, and a first spring being sleeved on the movable rod, the first spring being located between the first sector plate and the inner wall of the hollow bracket.
[0015] Furthermore, every two adjacent second sector plates are staggered.
[0016] Furthermore, every two of the rotating disks are arranged alternately.
[0017] Furthermore, the elastic component includes a movable hole formed on the U-shaped frame, a movable rod disposed inside the movable hole, one end of the movable rod being connected to the pulley, the other end of the movable rod being connected to the insert plate, and a second spring being sleeved on the movable rod, the second spring being located between the U-shaped frame and the pulley.
[0018] Furthermore, the arc-shaped fixing plate is provided with an anti-slip surface.
[0019] The technical effects achieved by this utility model are as follows:
[0020] 1. After the submarine cable is placed in the semi-circular trough, the structure is deployed to the seabed. When the seabed current passes by, the water current drives the impeller to rotate. The current drives the impeller to rotate the rotating shaft. When the rotating shaft rotates, it drives multiple second sector plates to rotate. The second sector plates squeeze the first sector plate. The first sector plate drives the movable rod to apply a clamping force to the arc-shaped fixing plate, thereby preventing slippage.
[0021] 2. As the rotating shaft rotates, multiple first bevel gears fixed to it also rotate, each meshing with a second bevel gear. The second bevel gears are mounted on the top of the rotating rod. Therefore, the rotational power of the rotating shaft is transmitted to the rotating rod through the bevel gear pair, causing it to drive the rotating disk to rotate within the hollow insert rod. When the pulley rolls to the "protruding" part of the rotating disk, the pulley is lifted, compressing the elastic component and forcefully pushing the insert plate out of the through-slot and inserting it into the seabed sediment layer. When the pulley rolls to the "recessed" part of the rotating disk, the compressed elastic component releases energy, allowing the insert plate to enter the through-slot. As the rotating rod continues to rotate, the rotating disk rotates continuously, driving multiple insert plates to be inserted and pulled out rapidly in a cyclical manner. This high-frequency insertion and extraction action allows the insert plates to increase the anchoring force in the soft sediment layer, firmly anchoring the entire device to the seabed and resisting ocean current dragging. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a sectional view of the hollow bracket of this utility model;
[0024] Figure 3 This is a schematic diagram of the structure of the rotating shaft of this utility model;
[0025] Figure 4 This is a schematic diagram of the structure of the insert plate of this utility model.
[0026] The attached diagram lists the components represented by each number as follows:
[0027] 1. Hollow bracket; 2. Semi-circular groove; 3. First sector plate; 4. Arc-shaped fixing plate; 5. Rotating shaft; 6. Current-driven impeller; 7. Second sector plate; 8. First bevel gear; 9. Hollow insert rod; 10. Rotating rod; 11. Second bevel gear; 12. Rotating disk; 13. U-shaped frame; 14. Through groove; 15. Pulley; 16. Insert plate; 17. Semi-circular cover plate; 18. Movable rod; 19. First spring; 20. Moving rod; 21. Second spring. Detailed Implementation
[0028] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.
[0029] like Figures 1-4 As shown, a submarine cable fixing structure for laying submarine cables includes a hollow bracket 1. The hollow bracket 1 has a semi-circular groove 2 for placing the submarine cable. Multiple through holes are formed in the inner wall of the semi-circular groove 2. Each through hole contains a movable component, which has a first sector plate 3 and an arc-shaped fixing plate 4. A rotating shaft 5 is located inside the hollow bracket 1. One end of the rotating shaft 5 extends through the hollow bracket 1 and is fitted with a current-driven impeller 6. Multiple second sector plates 7 and multiple first bevel gears 8 are fixedly mounted on the rotating shaft 5. Multiple mounting holes are formed at the bottom of the hollow bracket 1 for mounting... A hollow insert rod 9 is provided inside the hole. A rotating hole is provided on the hollow insert rod 9. A rotating rod 10 is provided inside the rotating hole. A second bevel gear 11 that meshes with the first bevel gear 8 is provided at the top of the rotating rod 10. Multiple uneven rotating disks 12 are provided on the part of the rotating rod 10 located in the hollow insert rod 9. Multiple sets of U-shaped frames 13 and through grooves 14 are provided on the inner wall of the hollow insert rod 9. Each U-shaped frame 13 is provided with an elastic component. The elastic component is provided with a pulley 15 and an insert plate 16. The insert plate 16 is located inside the through groove 14. The pulley 15 rolls on the outside of the rotating disk 12.
[0030] The hollow bracket 1 has a semi-circular cover plate 17 bolted on top, which is used to fix and protect the submarine cable.
[0031] Meanwhile, the movable component includes a movable rod 18 disposed inside the through hole. One end of the movable rod 18 is connected to the first sector plate 3, and the other end of the movable rod 18 is connected to the arc-shaped fixed plate 4. A first spring 19 is sleeved on the movable rod 18. The first spring 19 is located between the first sector plate 3 and the inner wall of the hollow bracket 1. When the rotating shaft 5 rotates, the rotating shaft 5 drives multiple second sector plates 7 to rotate. The second sector plates 7 press against the first sector plate 3. The first sector plate 3 drives the movable rod 18 to apply a clamping force to the arc-shaped fixed plate 4 on the submarine cable, thereby preventing slippage.
[0032] The second sector plates 7 are staggered between each pair of adjacent ones. This arrangement ensures that during rotation, they act like eccentric wheels or cams, periodically and alternately applying clamping force to the submarine cable by the arc-shaped fixing plate 4. This creates a continuous, dynamic, and multi-point distributed lateral clamping force on the submarine cable, preventing it from slipping.
[0033] The two rotating disks 12 are staggered, which allows the insert plate 16 to move back and forth from different directions, thereby further increasing the anchoring force.
[0034] The elastic component includes a movable hole formed in the U-shaped frame 13, and a movable rod 20 is provided inside the movable hole. One end of the movable rod 20 is connected to the pulley 15, and the other end of the movable rod 20 is connected to the insert plate 16. A second spring 21 is sleeved on the movable rod 20. The second spring 21 is located between the U-shaped frame 13 and the pulley 15. This arrangement allows the pulley 15 to rotate to the protrusion point, drive the movable rod 20 to move inside the movable hole and compress the second spring 21, thereby causing the insert plate 16 to extend and be fixed. When the pulley 15 rotates to the concave point, the second spring 21 drives the movable rod 20 to move and return to its original position.
[0035] The curved fixing plate 4 is provided with an anti-slip surface, which improves the fixing effect.
[0036] The through groove 14 is matched with the insert plate 16. The length of the insert plate 16 is greater than the length of the through groove 14. This arrangement allows the insert plate 16 to move inside the through groove 14. At the same time, the insert plate 16 seals the through groove 14 to prevent water from entering.
[0037] It should be noted that: all connections of this utility model, such as through-holes (through-holes of movable rod 18, through-holes of rotating shaft 5, etc.), are equipped with sealing sleeves to prevent water leakage. In addition, all components of this utility model are made of corrosion-resistant materials, which can achieve the effect of corrosion prevention. This is existing technology and will not be described in detail here.
[0038] The working principle of this utility model is as follows: After the submarine cable is placed in the semi-circular groove 2, the structure is deployed to the seabed. When the seabed current passes by, the water current drives the impeller 6 to rotate. The current drives the impeller 6 to drive the rotating shaft 5 to rotate. When the rotating shaft 5 rotates, the rotating shaft 5 drives multiple second sector plates 7 to rotate. The second sector plates 7 squeeze the first sector plate 3. The first sector plate 3 drives the movable rod 18 to make the arc-shaped fixing plate 4 apply a clamping force to the submarine cable, thereby preventing slippage. At the same time as the rotating shaft 5 rotates, multiple first bevel gears 8 fixed on it also rotate together. Each first bevel gear 8 meshes with a second bevel gear 11. The second bevel gear 11 is installed on the top of the rotating rod 10. Therefore, the rotational power of the rotating shaft 5 is transmitted to the rotating rod 10 through the bevel gear pair, causing it to drive the rotating disk 12 to rotate inside the hollow insert rod 9. When the pulley 15 rolls to the "protruding" part of the rotating disk 12, the pulley 15 is lifted up, compressing the elastic component, and at the same time forcefully pushing the insert plate 16 out of the through groove 14 and inserting it into the seabed sediment layer. When the pulley 15 rolls to the "recessed" part of the rotating disk 12, the compressed elastic component releases energy, causing the insert plate 16 to enter the through groove 14. As the rotating rod 10 continues to rotate, the rotating disk 12 rotates continuously, driving multiple insert plates 16 to be inserted and pulled out repeatedly and rapidly. This high-frequency insertion and pulling action enables the insert plate 16 to increase the anchoring force in the soft sediment layer, firmly anchoring the entire device to the seabed and resisting ocean current dragging.
[0039] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.
Claims
1. A submarine cable fixing structure for laying submarine cables, comprising a hollow bracket (1), characterized in that: The hollow bracket (1) is provided with a semi-circular groove (2) for placing the submarine cable. The inner wall of the semi-circular groove (2) is provided with multiple through holes. Each through hole is provided with a moving component. The moving component is provided with a first sector plate (3) and an arc-shaped fixing plate (4). The hollow bracket (1) is provided with a rotating shaft (5). One end of the rotating shaft (5) passes through the hollow bracket (1) and is equipped with an ocean current driving impeller (6). Multiple second sector plates (7) and multiple first bevel gears (8) are fixedly provided on the rotating shaft (5). The bottom of the hollow bracket (1) is provided with multiple mounting holes. Hollow insert rods (9) are provided inside the mounting holes. A rotating hole is provided on the hollow insert rod (9), and a rotating rod (10) is provided inside the rotating hole. A second bevel gear (11) that meshes with the first bevel gear (8) is provided on the top of the rotating rod (10). Multiple uneven rotating disks (12) are provided on the rotating rod (10) inside the hollow insert rod (9). Multiple sets of U-shaped frames (13) and through grooves (14) are provided on the inner wall of the hollow insert rod (9). Each U-shaped frame (13) is provided with an elastic component. The elastic component is provided with a pulley (15) and a plate (16). The plate (16) is located inside the through groove (14). The pulley (15) rolls on the outside of the rotating disk (12).
2. The submarine cable fixing structure for submarine cable laying according to claim 1, characterized in that: The hollow bracket (1) is bolted to the top with a semi-circular cover plate (17).
3. The submarine cable fixing structure for submarine cable laying according to claim 1, characterized in that: The movable component includes a movable rod (18) disposed inside the through hole. One end of the movable rod (18) is connected to the first sector plate (3), and the other end of the movable rod (18) is connected to the arc-shaped fixed plate (4). A first spring (19) is sleeved on the movable rod (18), and the first spring (19) is located between the first sector plate (3) and the inner wall of the hollow bracket (1).
4. The submarine cable fixing structure for submarine cable laying according to claim 1, characterized in that: The second sector plates (7) are staggered for every two adjacent ones.
5. The submarine cable fixing structure for submarine cable laying according to claim 1, characterized in that: Each pair of said rotating disks (12) are staggered.
6. The submarine cable fixing structure for submarine cable laying according to claim 1, characterized in that: The elastic component includes a movable hole opened on the U-shaped frame (13), a movable rod (20) is provided inside the movable hole, one end of the movable rod (20) is connected to the pulley (15), the other end of the movable rod (20) is connected to the insert plate (16), and a second spring (21) is sleeved on the movable rod (20), the second spring (21) is located between the U-shaped frame (13) and the pulley (15).
7. The submarine cable fixing structure for submarine cable laying according to claim 1, characterized in that: The arc-shaped fixing plate (4) is provided with an anti-slip surface.