Submarine cable position correction device

Abstract

The utility model relates to the field of submarine cable laying, and particularly discloses a submarine cable position correction device which comprises an ROV body, a grabbing assembly and a limiting assembly, the grabbing assembly and the limiting assembly are arranged on the ROV body, the ROV body serves as an installation carrier and is provided with a propelling system, a sensor module, a communication positioning system, a control system and the like, and the grabbing assembly is used for grabbing a cable and limiting the cable to be installed. The limiting assembly performs limiting along the radial direction of the cable. After the grabbing assembly grabs the cable with the offset position, the ROV main body advances along the preset laying route of the cable under the cooperation of the propelling system, the communication positioning system and other modules, and the cable is gradually corrected to the preset laying position under the radial limiting effect of the limiting assembly, so that the cable laying precision can be effectively improved. The utility model has the advantages of high laying precision and convenient equipment use.

Description

Technical Field

[0001] This application relates to the field of submarine cable laying, and in particular to a submarine cable position correction device. Background Technology

[0002] Submarine cables are cables laid on the seabed, primarily used for telecommunications and power transmission. They are divided into submarine communication cables and submarine power cables; the former are mainly used for international communications, while the latter are used for long-distance power transmission. Submarine cables are key equipment for transoceanic power transmission, offering advantages such as low laying costs, rapid construction, strong anti-interference capabilities, and good security.

[0003] Submarine cables are typically laid either directly or buried. Direct laying involves placing the cable directly on the seabed surface, while burial involves embedding the cable in seabed sediments to protect it from external interference and damage.

[0004] Regardless of the laying method used, the cable must be accurately laid to the predetermined position, with a deviation requirement of 5-10 meters. However, due to seawater flow, the final cable laying result usually has an error exceeding the deviation requirement, so the cable position needs to be calibrated after laying. Utility Model Content

[0005] To improve the accuracy of cable laying, this application provides a submarine cable position correction device, which calibrates the position of the submarine cable after it has been laid to ensure that the error is within the allowable range and improve the laying accuracy of the submarine cable.

[0006] The submarine cable position correction device provided in this application adopts the following technical solution:

[0007] A submarine cable position correction device includes an ROV body, at least one set of gripping components, and at least one set of limiting components. The gripping components and limiting components are both installed on the ROV body. The limiting components are used to limit the cable radially. The gripping components include a mounting plate, a rotating shaft, and two hooks. The two hooks are arranged opposite to each other and are rotatably mounted on the mounting plate via the rotating shaft. The mounting plate is connected to the bottom of the ROV body. A telescopic drive is installed on the mounting plate, which is used to drive the two hooks to rotate in a direction that moves closer to or further away from each other.

[0008] By adopting the above technical solution, the gripping component and the limiting component work together to form a radial limit on the cable. The ROV body advances along the cable's preset laying route with the help of the propulsion system and the communication positioning system, and then gradually corrects the deviated cable to the preset position, which can greatly improve the accuracy of cable laying.

[0009] Optionally, the limiting component includes a support, an extension plate, and rolling rods. The support is connected to the bottom of the ROV body. Two extension plates are provided, each rotatably connected to the support. A telescopic drive is installed on the support, which drives the two extension plates to rotate towards or away from each other. Multiple rolling rods are provided, each mounted on one of the two extension plates. When the two extension plates rotate to be close to each other, the multiple rolling rods enclose each other to form a rectangular frame structure for the cable to pass through.

[0010] By adopting the above technical solution, when the equipment as a whole moves relative to the cable, the rolling rod abuts against the outside of the cable. As the two move relative to each other, the rolling rod rotates under the action of friction, thereby reducing the friction between the cable and the rolling rod and reducing cable wear.

[0011] Optionally, the limiting component further includes a guide claw, which is mounted on the extension plate. When the two extension plates rotate toward each other, the guide claw guides the cable to gradually enter the rectangular frame structure formed by the rolling rod.

[0012] By adopting the above technical solution, the guide claw can guide and restrict the movement of the cable, preventing the cable from getting stuck between the rolling rod and the extension plate, and improving the accuracy of the gripped cable.

[0013] Optionally, the rollers are perpendicular to the extension plate, and the plurality of rollers are staggered.

[0014] By adopting the above technical solution, multiple rolling rods are staggered to form a limiting space, which radially limits the cable, so as to facilitate the correction of the cable's position.

[0015] Optionally, the two limiting components located on the outer side are further provided with guide plates on their extension plates. The guide plates are fixed to the side of the two limiting components that are far apart from each other, and the distance between the two guide plates gradually increases from the inner side to the outer side.

[0016] By adopting the above technical solution, the guide plate can guide the position of the cable when the equipment moves as a whole, thus reducing the wear and tear on the cable.

[0017] Optionally, a lifting beam is installed at the bottom of the ROV body, and the gripping component and the limiting component are both installed on the lifting beam.

[0018] By adopting the above technical solution, the lifting beam at the bottom of the ROV body descends, and the gripping component and limiting component move away from the ROV body to facilitate gripping the cable. After the gripping action is completed, the lifting beam rises, and the gripping component and limiting component move the cable closer to the ROV body, which facilitates the subsequent movement of the entire equipment underwater.

[0019] Optionally, an anti-sinking plate is installed at the bottom of the ROV body, and the anti-sinking plate abuts against the seabed surface.

[0020] By adopting the above technical solution, the dustproof plate surface is in contact with the seabed surface, which can effectively prevent the equipment from sinking into the seabed sediments and facilitate the overall movement of the equipment in the water.

[0021] Optionally, the telescopic drive component is a hydraulic cylinder.

[0022] By adopting the above technical solution, the hydraulic cylinder outputs a large thrust, has high control precision, and a compact structure, and can meet the needs of underwater use.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The gripping and limiting components work together to radially limit the cable. The ROV body advances along the cable's preset laying route with the help of the propulsion system and communication positioning system, and gradually corrects the deviated cable to the preset position, which can greatly improve the accuracy of cable laying.

[0025] 2. When the equipment moves relative to the cable, the rolling rod abuts against the outside of the cable. As the two move relative to each other, the rolling rod rotates under the action of friction, thereby reducing the friction between the cable and the rolling rod and reducing cable wear.

[0026] 3. The lifting beam at the bottom of the ROV body descends, and the gripping and limiting components move away from the ROV body to grip the cable. After the gripping action is completed, the lifting beam rises, and the gripping and limiting components move the cable closer to the ROV body, which facilitates the subsequent movement of the entire equipment underwater. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0028] Figure 2 yes Figure 1 Enlarged view at point A in the middle;

[0029] Figure 3 This is a schematic diagram illustrating the crawling component separately in an embodiment of this application;

[0030] Figure 4 This is a schematic diagram illustrating the limiting component separately in an embodiment of this application;

[0031] Figure 5 This is a schematic diagram illustrating another structure of the limiting component in a separate embodiment of this application.

[0032] Reference numerals: 1. ROV body; 2. Gripping assembly; 21. Mounting plate; 22. Rotary shaft; 23. Hook; 24. Connecting part; 3. Limiting assembly; 31. Support part; 32. Extension plate; 33. Rolling rod; 34. Guide claw; 4. Lifting beam; 5. Telescopic drive component; 6. Guide plate; 7. Anti-sinking plate. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0034] This application discloses a submarine cable position correction device, referring to... Figure 1 and Figure 2 The system includes an ROV body 1, a gripping component 2, and a limiting component 3 mounted on the ROV body 1. The ROV body 1 serves as the installation carrier and is equipped with a propulsion system, sensor modules, a communication and positioning system, and a control system. The gripping component 2 grips the cable, and the limiting component 3 limits its movement radially along the cable. After the gripping component 2 grips the cable and its position deviates, the ROV body 1, with the cooperation of the propulsion system and communication and positioning system, advances along the cable's pre-set laying route. Under the radial limiting action of the limiting component 3, the cable is gradually corrected to the pre-set laying position, effectively improving the accuracy of cable laying.

[0035] It should be noted that ROV (Remotely Operated Vehicle) is an underwater operating device that is connected to an operating platform via an umbilical cable and remotely controlled by an operator. It is widely used in the field of cable laying and can achieve precise underwater movement through thrusters and buoyancy adjustment devices.

[0036] Reference Figure 1 The bottom of the ROV body 1 can be equipped with a lifting beam 4. The gripping component 2 and the limiting component 3 are both installed on the lifting beam 4. The bottom of the ROV body 1 has two telescopic ends. The two ends of the lifting beam 4 are fixed to the two telescopic ends respectively. When the two telescopic ends extend and retract synchronously, the lifting beam 4 can drive the gripping component 2 and the limiting component 3 to move towards or away from the ROV body 1.

[0037] In use, the two telescopic ends at the bottom of the ROV body 1 extend synchronously, and the gripping component 2 and the limiting component 3 move away from the ROV body 1 to grip the cable. After the gripping action is completed, the two telescopic ends retract synchronously, and the gripping component 2 and the limiting component 3 drive the cable closer to the ROV body 1, which facilitates the subsequent movement of the entire device underwater.

[0038] It should be noted that the two telescopic ends at the bottom of the ROV body 1 can be the movable ends of two hydraulic cylinders, and in other embodiments they can also be configured as other linear drive mechanisms. This invention is not limited to the type of drive, etc.

[0039] Specifically, refer to Figure 3 The gripping component 2 may include a mounting plate 21, a rotating shaft 22, and hooks 23. Two mounting plates 21 are configured, positioned opposite each other and fixed to the lifting beam 4. Two rotating shafts 22 are configured, with each end of the shaft 22 rotatably mounted on one of the two mounting plates 21. Two hooks 23 are correspondingly configured, fixed to the two rotating shafts 22 respectively, and positioned opposite each other. When the two hooks 23 rotate in a direction away from each other, they are in an open position; when they rotate in a direction closer to each other, they can grip the cable.

[0040] To drive the two hooks 23 to rotate, each of the two mounting plates 21 is equipped with a telescopic drive 5. The housing of the telescopic drive 5 is hinged to the mounting plate 21. The rotating shaft 22 extends to the side away from the hooks 23 to form a connecting part 24. The movable end of the telescopic drive 5 is hinged to the connecting part 24. The extension or retraction of the movable end of the telescopic drive 5 can drive the hooks 23 to move closer or further apart to grab or release the cable.

[0041] In this embodiment, the gripping component 2 is configured with two sets, which are placed at both ends of the lifting beam 4. In other embodiments, it can also be configured with other numbers of sets.

[0042] Reference Figure 4 The limiting component 3 includes a support part 31, an extension plate 32, and a rolling rod 33. There are two support parts 31, both of which are fixed to the bottom of the lifting beam 4. There are two extension plates 32, which are respectively hinged to the ends of the two support parts 31 away from the lifting beam 4. Each support part 31 is equipped with a telescopic drive 5 for driving the extension plate 32 to rotate. The housing of the telescopic drive 5 is hinged to the support part 31, and the movable end is hinged to the corresponding extension plate 32. The two extension plates 32 rotate towards or away from each other under the drive of the telescopic drive 5. Four rolling rods 33 can be provided and rotatably installed on the two extension plates 32.

[0043] When the two extension plates 32 rotate to approach each other, that is, when they are vertically downward, the four rolling rods 33 enclose a rectangular frame structure for the cable to pass through. When the whole machine moves on the seabed, the cable contacts the rolling rods 33, and the rolling rods 33 rotate under the action of friction to reduce cable wear.

[0044] In this embodiment, the telescopic drive component 5 is preferably a hydraulic cylinder. Hydraulic cylinders have large output thrust, high control precision, and compact structure, and can meet the needs of underwater use.

[0045] Reference Figure 4Four rolling rods 33 are respectively installed on two extension plates 32. They can be distributed in pairs or in a one-three distribution. Only two rolling rods 33 parallel to the extension plates 32 need to be installed on the two extension plates 32 respectively. In this embodiment, it is preferred to distribute them in pairs.

[0046] Furthermore, the limiting component 3 also includes a guide claw 34, which is mounted on the same extension plate 32 as the rolling rod 33 away from the lifting beam 4. When gripping the cable, the guide claw 34 guides the cable to gradually enter the rectangular frame structure formed by the four rolling rods 33, thereby improving the accuracy of gripping.

[0047] In this embodiment, the limiting component 3 is configured with six groups and is evenly distributed between the two gripping components 2. In other embodiments, it can be configured with other numbers of groups as needed, but the present invention is not limited to the number of groups of the limiting component 3.

[0048] Reference Figure 5 In this embodiment, two sets of limiting components 3 are respectively arranged outside the two gripping components 2. The rolling rods 33 of the two sets of limiting components 3 are configured differently, including a total of eight rolling rods 33, all of which are installed perpendicular to the extension plate 32 and are staggered. When the two extension plates 32 rotate to be parallel to each other, the rolling rods 33 are respectively distributed above and below the cable, and cooperate to form a radial limit on the cable.

[0049] Furthermore, guide plates 6 are also installed on the extension plates 32 of the two sets of limiting components 3. The guide plates 6 are fixed on the side of the two sets of limiting components 3 that are far apart from each other. The two guide plates 6 in one set gradually increase in distance from the inside to the outside, that is, from the direction away from the gripping component 2, so as to guide the cable and reduce the wear on the cable during movement.

[0050] Reference Figure 1 The bottom of the ROV body 1 is equipped with two anti-sinking plates 7. The surface of the anti-dust plate abuts against the seabed surface, which can effectively prevent the equipment from sinking into the seabed sediment. The two ends of the anti-dust plate are bent upward, which makes it easier for the equipment to move in the water and avoids the ends getting stuck on the seabed sediment.

[0051] The implementation principle of the submarine cable position correction device disclosed in this application is as follows:

[0052] First, the remote-controlled ROV main body 1 moves the entire device directly above the cable to be corrected, and simultaneously drives the gripping component 2 and the limiting component 3, causing the hook 23 and the extension plate 32 to rotate away from each other. Then, the lifting beam 4 is driven down, so that the cable is located between the hooks 23. Simultaneously, the gripping component 2 and the limiting component 3 are driven again, causing the hook 23 and the extension plate 32 to rotate towards each other, gripping the cable and placing it within the rectangular frame formed by the rolling rod 33. Then, the lifting beam 4 is driven up, so that the anti-sinking plate 7 abuts against the seabed surface. Then, the remote-controlled ROV main body 1 moves the entire device along the predetermined cable laying route, thereby gradually correcting the position of the cable and improving the accuracy of cable laying.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A submarine cable position correction apparatus, characterized by: The utility model provides a kind of ROV, including ROV main body (1), at least one group of grabbing components (2) and at least one group of limiting components (3), the grabbing component (2) and limiting component (3) are installed in ROV main body (1), the limiting component (3) is used to limit cable along radial, the grabbing component (2) includes mounting plate (21), pivot (22) and two hooks (23), two the hooks (23) are oppositely arranged, and two the hooks (23) are rotatably installed in mounting plate (21) by pivot (22), the mounting plate (21) is connected to the bottom of ROV main body (1), retractable drive (5) is installed on the mounting plate (21), and the retractable drive (5) is used to drive two hooks (23) to the direction of mutual approach or away from each other.

2. A device for correcting the position of a submarine cable according to claim 1, characterized in that: The limiting component (3) includes support part (31), extension plate (32) and rolling rod (33), the support part (31) is connected to the bottom of ROV main body (1), the extension plate (32) is provided with two, two the extension plate (32) is rotatably connected to support part (31), retractable drive (5) is installed on the support part (31), and the retractable drive (5) is used to drive two extension plates (32) to the direction of mutual approach or away from each other, the rolling rod (33) is provided with multiple, multiple the rolling rod (33) is installed on two extension plates (32), when two the extension plate (32) is rotated to each other close, multiple the rolling rod (33) is enclosed to form the rectangular frame structure for cable to pass through.

3. A device for correcting the position of a submarine cable according to claim 2, characterised in that: The limiting component (3) further includes guide claw (34), when two the extension plate (32) is rotated to each other close, the guide claw (34) guides cable to gradually enter the rectangular frame structure enclosed by rolling rod (33).

4. A device for correcting the position of a submarine cable according to claim 2, characterized in that: The rolling rod (33) is perpendicular to extension plate (32), and multiple the rolling rod (33) is staggered.

5. A device for correcting the position of a submarine cable according to claim 4, characterised in that: Two limiting components (3) located on the outside, guide plate (6) is also installed on the extension plate (32) of two limiting components (3), the guide plate (6) is fixed to the side of two limiting components (3) away from each other, and the distance between two the guide plate (6) gradually increases from inside to outside.

6. A device for correcting the position of a submarine cable according to claim 1, characterized in that: The bottom of the ROV main body (1) is provided with lifting beam (4), and the grabbing component (2) and the limiting component (3) are installed on the lifting beam (4).

7. A device for correcting the position of a submarine cable according to claim 1, characterized in that: The bottom of the ROV main body (1) is provided with anti-sinking plate (7), and the anti-sinking plate (7) abuts against the sea bottom surface.

8. A device for correcting the position of a submarine cable according to claim 1, characterized in that: The retractable drive (5) is a hydraulic cylinder.

Images