A marine cable outer sheath biofouling cleaning device

Abstract

The application discloses a kind of marine cable outer sheath attached organism cleaning device, it is related to marine cable cleaning device technical field, it includes: cleaning device shell and swing arm type friction walking mechanism, cleaning device shell is cylindrical sleeve structure, and cleaning device shell front end is provided with horn extrusion piece;Cleaning device shell inside upper portion is provided with the rolling support shaft for being contacted with marine cable outer sheath;Swing arm type friction walking mechanism includes the swing arm of symmetrical setting in the both sides of marine cable outer sheath, the half gear transmission assembly of being installed to cleaning device shell inside lower portion and the drive impeller driven by sea current, drive impeller is driven connection two sides swing arm by half gear transmission assembly, for driving swing arm swing, and advance by the friction force of marine cable outer sheath and drive device.This application can efficiently, safely and environmentally clean the marine organism attached to the surface of marine cable outer sheath, avoid the damage of marine cable caused by traditional cleaning method, low efficiency and environmental pollution problem.

Description

Technical Field

[0001] This application relates to the field of submarine cable cleaning devices, and in particular to a device for cleaning biological attachments to the outer sheath of submarine cables. Background Technology

[0002] With the rapid development of the global offshore wind power industry, submarine cables (hereinafter referred to as "submarine cables") are crucial as the core infrastructure for offshore energy and communication transmission, and their safe and stable operation is of paramount importance. Submarine cables undertake the task of power and data transmission between offshore wind farm turbine platforms, substations, and onshore control centers, serving as a key link for large-scale offshore wind power development. However, submarine cables operate in complex seabed environments for extended periods, and their outer sheaths are highly susceptible to the adhesion of large amounts of marine organisms (such as shellfish, algae, and microorganisms), forming a dense biofilm.

[0003] Biofouling poses multiple threats to submarine cable performance: Firstly, the attached biofouling layer significantly increases the cable's weight, leading to increased tension and exacerbating mechanical losses under dynamic loads such as ocean currents and tides, reducing flexibility and increasing the risk of breakage. Secondly, the thermal resistance formed by the biofouling layer disrupts the cable's temperature field distribution, causing heat accumulation and increased resistance during internal power transmission, further increasing power loss and potentially triggering localized overheating, threatening insulation safety. Furthermore, biofouling can also induce electrochemical corrosion, further shortening the cable's service life.

[0004] Currently, methods for cleaning biological deposits on the outer sheath of submarine cables have significant drawbacks: traditional manual cleaning is inefficient, costly, and prone to causing physical damage to the cable sheath; chemical cleaning methods may pollute the marine environment and do not meet green environmental protection requirements; existing automated mechanical devices suffer from poor adaptability and incomplete cleaning. Therefore, there is an urgent need for an efficient, safe, and environmentally friendly device for cleaning biological deposits on the outer sheath of submarine cables to overcome the shortcomings of existing technologies and ensure the long-term reliable operation of submarine cables. To this end, this invention proposes a device for cleaning biological deposits on the outer sheath of submarine cables. Summary of the Invention

[0005] This application provides a device for cleaning marine organisms attached to the outer sheath of submarine cables, which can efficiently, safely and environmentally remove marine organisms attached to the surface of the outer sheath of submarine cables, avoiding the problems of cable damage, low efficiency and environmental pollution caused by traditional cleaning methods.

[0006] In view of this, this application provides a biological cleaning device for the outer sheath of a submarine cable, comprising: a cleaning device housing coaxially sleeved on the outer sheath of the submarine cable and a swing arm friction walking mechanism disposed on the cleaning device housing;

[0007] The outer shell of the cleaning device is a cylindrical sleeve structure, and a trumpet-shaped extruder is provided at the front end of the outer shell of the cleaning device;

[0008] The large end of the trumpet-shaped extruder is fixedly connected to the front end of the cleaning device housing, and the inner side of the small end is attached to the outer sheath of the submarine cable to expel marine organisms attached to the outer sheath of the submarine cable.

[0009] A rolling support shaft is provided on the upper inner side of the cleaning device housing;

[0010] The outer surface of the rolling support shaft contacts the outer sheath of the submarine cable, which is used to support the device and moves the submarine cable through the rolling friction assist device.

[0011] The swing-arm friction walking mechanism includes swing arms symmetrically arranged on both sides of the outer sheath of the submarine cable, a half-gear transmission assembly installed on the lower inner side of the cleaning device housing, and a drive impeller for rotating under the action of ocean currents.

[0012] The drive impeller is located directly below the housing of the cleaning device, and the drive impeller is connected to the swing arm via the half-gear transmission assembly to drive the swing arm to swing, thereby driving the device forward through the friction between the swing arm and the outer sheath of the submarine cable.

[0013] Optionally, the swing arm includes a swing rod and an elastic friction block;

[0014] The elastic friction block is fixed at an angle along the horizontal direction on the side of the swing rod near the outer sheath of the submarine cable, and the elastic friction block is in close contact with the outer sheath of the submarine cable, so that the elastic friction block generates effective driving friction force in only one direction during the swing of the swing rod.

[0015] Optionally, the half-gear transmission assembly includes a vertical transmission shaft rotatably disposed at the bottom of the inner side of the cleaning device housing and a horizontal transmission shaft rotatably disposed within the cleaning device housing;

[0016] The horizontal drive shaft is located directly above the vertical drive shaft;

[0017] The vertical drive shaft is provided with a first half gear structure at one end near the horizontal drive shaft, and the vertical drive shaft is coaxially connected to the drive impeller at the other end away from the horizontal drive shaft.

[0018] The horizontal transmission shaft is provided with a second half-gear structure and a third half-gear structure for cooperating with the first half-gear structure.

[0019] The second half-gear structure and the third half-gear structure are centrally symmetrical, and both the second half-gear structure and the third half-gear structure are meshed with the first half-gear structure.

[0020] The number of swing arms is two, and the two swing arms are symmetrically fixed at both ends of the horizontal transmission shaft in the vertical direction.

[0021] Optionally, the drive impeller includes a vertically arranged first central shaft and a plurality of blades uniformly mounted circumferentially on the first central shaft.

[0022] Optionally, a dual-axis composite energy conversion device is fixed to the bottom of the cleaning device housing via a fixing bracket;

[0023] The dual-axis composite energy conversion device includes an energy storage unit and an upper axis drive unit and a lower axis power generation unit arranged coaxially.

[0024] The lower shaft power generation unit is electrically connected to the energy storage unit;

[0025] The energy storage unit is electrically connected to the upper shaft drive unit;

[0026] The dual-shaft composite energy conversion device is located directly below the drive impeller, and the upper shaft drive unit is coaxially driven and connected to the drive impeller.

[0027] The lower shaft power generation unit is coaxially connected to a power generation impeller.

[0028] Optionally, the fixing frame includes a horizontal connecting plate that is radially and symmetrically fixed to both sides of the cleaning device housing, a horizontal fixing plate disposed directly below the drive impeller, and a support column disposed between the horizontal connecting plate and the horizontal fixing plate;

[0029] One end of the support column is fixedly connected to the lower surface of the horizontal connecting plate, and the other end is fixedly connected to the upper surface of the horizontal fixing plate.

[0030] The dual-axis composite energy conversion device is fixedly mounted on the horizontal fixed plate;

[0031] The power generation impeller is located below the horizontal fixed disk.

[0032] Optionally, the power generation impeller includes a vertically arranged second central shaft and a plurality of blades uniformly mounted on the second central shaft in the circumferential direction;

[0033] The upper end of the second central shaft is fixedly connected to the lower shaft power generation unit.

[0034] Optionally, the blade is installed at an angle of 30°.

[0035] Optionally, the number of the rolling support shafts is multiple;

[0036] The multiple rolling support shafts are evenly distributed circumferentially.

[0037] Optionally, the rolling support shaft is a gear shaft.

[0038] As can be seen from the above technical solutions, the embodiments of this application have the following advantages: This submarine cable outer sheath attachment organism removal device, by setting a funnel-shaped extruder, can effectively expel marine organisms, avoiding the problems of low efficiency, high cost, and physical damage associated with manual cleaning, while overcoming the pollution defects of chemical cleaning. The rolling support shaft moves with the rolling friction auxiliary device, which can reduce resistance and improve movement stability. In the swing arm friction walking mechanism, the drive impeller rotates with the help of ocean currents, and drives the swing arms on both sides to swing through the half-gear transmission assembly, using friction to drive the device forward. Compared with existing mechanical devices, it is more adaptable and moves more stably, ensuring efficient and continuous cleaning, improving the cleaning effect, and ensuring the reliable operation of the submarine cable. In addition, the device does not require manual intervention, which can effectively reduce costs and avoid chemical pollution, thereby achieving the goal of efficient, safe, and environmentally friendly cleaning. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of the biological cleaning device for the outer sheath of the submarine cable in use, as described in the embodiments of this application.

[0040] Figure 2 This is a front view of the biological cleaning device for the outer sheath of the submarine cable in use, as described in the embodiments of this application.

[0041] Figure 3 This is a side view of the biological cleaning device for the outer sheath of the submarine cable in use, as described in the embodiments of this application.

[0042] Figure 4 This is a top view of the biological cleaning device for the outer sheath of the submarine cable in use, as described in the embodiments of this application.

[0043] Figure 5 This is a schematic diagram of the connection structure between the half-gear transmission assembly and the swing arm in an embodiment of this application;

[0044] Figure 6 This is a schematic diagram of the connection structure of the swing rod, elastic friction block and submarine cable outer sheath in the embodiments of this application.

[0045] The attached figures are labeled as follows:

[0046] 1-Submarine cable, 2-Cleaning device housing, 3-Rolling support shaft, 4-Half gear transmission assembly, 41-Vertical transmission shaft, 42-Horizontal transmission shaft, 43-First half gear structure, 44-Second half gear structure, 45-Third half gear structure, 5-Elastic friction block, 6-Swing rod, 7-Drive impeller, 8-Flare-shaped extruder, 9-Dual-shaft composite energy conversion device, 10-Horizontal fixed plate, 11-Power generation impeller, 12-Support column, 13-Blade, 14-Horizontal connecting plate. Detailed Implementation

[0047] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0048] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] This application provides an embodiment of a biological cleaning device for the outer sheath of submarine cables. Please refer to the following for details. Figures 1 to 3 .

[0051] The biological removal device for the outer sheath of the submarine cable in this embodiment includes: a cleaning device housing 2 coaxially sleeved on the outer sheath of the submarine cable 1, and a swing-arm friction walking mechanism disposed on the cleaning device housing 2. The cleaning device housing 2 has a cylindrical sleeve structure, and a trumpet-shaped extruder 8 is provided at the front end of the cleaning device housing 2. The large end of the trumpet-shaped extruder 8 is fixedly connected to the front end of the cleaning device housing 2, and the inner side of the small end is attached to the outer sheath of the submarine cable 1 to expel the marine organisms attached to the outer sheath of the submarine cable 1. A rolling support shaft 3 is provided on the upper inner side of the cleaning device housing 2 for rolling... The outer surface of the support shaft 3 contacts the outer sheath of the submarine cable 1, which is used to support the device and move the submarine cable 1 through the rolling friction auxiliary device; the swing arm friction walking mechanism includes swing arms symmetrically arranged on both sides of the outer sheath of the submarine cable 1, a half gear transmission assembly 4 installed on the lower inner side of the cleaning device housing 2, and a drive impeller 7 for rotating under the action of ocean current. The drive impeller 7 is located directly below the cleaning device housing 2, and the drive impeller 7 drives the swing arm through the half gear transmission assembly 4 to drive the swing arms on both sides to swing, thereby driving the device forward through the friction between the swing arm and the outer sheath of the submarine cable 1.

[0052] It should be noted that this device for cleaning marine organisms attached to the outer sheath of the submarine cable effectively removes them by using a trumpet-shaped extruder 8, avoiding the problems of low efficiency, high cost, and physical damage associated with manual cleaning, while also overcoming the pollution defects of chemical cleaning. The rolling support shaft 3 moves with the aid of a rolling friction device, reducing resistance and improving movement stability. In the swing-arm friction walking mechanism, the drive impeller 7 rotates with the help of ocean currents, driving the swing arms on both sides of the outer sheath of the submarine cable 1 to swing via a half-gear transmission assembly 4. Friction drives the device forward, making it more adaptable and stable than existing mechanical devices, ensuring efficient and continuous cleaning, improving cleaning effectiveness, and guaranteeing the reliable operation of the submarine cable 1. Furthermore, the device requires no manual intervention, effectively reducing costs and avoiding chemical pollution, thus achieving the goal of efficient, safe, and environmentally friendly cleaning.

[0053] The above is Embodiment 1 of a biological removal device for the outer sheath of a submarine cable provided in this application. The following is Embodiment 2 of the same device. Please refer to the following for details. Figures 1 to 6 .

[0054] The biological removal device for the outer sheath of the submarine cable in this embodiment includes: a cleaning device housing 2 coaxially sleeved on the outer sheath of the submarine cable 1, and a swing-arm friction walking mechanism disposed on the cleaning device housing 2. The cleaning device housing 2 has a cylindrical sleeve structure, and a trumpet-shaped extruder 8 is provided at the front end of the cleaning device housing 2. The large end of the trumpet-shaped extruder 8 is fixedly connected to the front end of the cleaning device housing 2, and the inner side of the small end is attached to the outer sheath of the submarine cable 1. The trumpet-shaped extruder 8 can peel off the attached organisms on the outer sheath of the submarine cable 1 by the squeezing action generated by the tapered cross section. A rolling support shaft 3 is provided on the upper inner side of the cleaning device housing 2. The outer surface of the rolling support shaft 3 is in contact with the outer sheath of the submarine cable 1 to support the device. The device moves along the submarine cable 1 via a rolling friction assist device, which helps the device move stably on the cable 1 and ensures the continuity of the cleaning work. The swing-arm friction walking mechanism includes swing arms symmetrically arranged on both sides of the outer sheath of the submarine cable 1, a half-gear transmission assembly 4 installed on the lower inner side of the cleaning device housing 2, and a drive impeller 7 for rotating under the action of ocean currents. The half-gear transmission assembly 4 is used to convert the rotational motion of the drive impeller 7 into the swinging motion of the swing arms. The drive impeller 7 is located directly below the cleaning device housing 2, and the drive impeller 7 drives the swing arms connected to both sides of the outer sheath of the submarine cable 1 through the half-gear transmission assembly 4, thereby driving the swing arms to swing, and thus driving the device forward through the friction between the swing arms and the outer sheath of the submarine cable 1. Preferably, the small end of the trumpet-shaped extruder 8 can be attached to the surface of the outer sheath of the submarine cable 1 by an elastic sealing ring, which improves the extrusion effect without damaging the submarine cable 1.

[0055] Understandably, the cleaning device housing 2 has a cylindrical sleeve structure, which helps to reduce resistance in seawater and facilitates the movement of the device along the submarine cable 1. During the movement of the device along the submarine cable 1, the trumpet-shaped extruder 8 can directly contact the organisms attached to the outer sheath of the submarine cable 1, and the forward thrust of the device will squeeze the attached organisms out of the surface of the outer sheath of the submarine cable 1, thereby achieving the cleaning effect. A rolling support shaft 3 is installed on the upper inner side of the cleaning device housing 2, and a half-gear transmission assembly 4 is installed on the lower inner side, providing a mounting base and movement space for other internal components of the device.

[0056] The swing arm includes a swing rod 6 and an elastic friction block 5. The elastic friction block 5 is fixed at a certain angle along the horizontal direction to the side of the swing rod 6 near the outer sheath of the submarine cable 1, and the elastic friction block 5 is in close contact with the outer sheath of the submarine cable 1, so that the elastic friction block 5 generates effective driving friction force in only one direction during the swing of the swing rod 6. Specifically, the swing rod 6 serves to support and fix the elastic friction block 5, and the material of the swing rod 6 can be metal; the elastic friction block 5 can be a rubber pad, which utilizes the high frictional properties of rubber to provide the friction force required for the device to move forward. At the same time, the rubber pad has a certain degree of flexibility, which can ensure friction while avoiding damage to the outer sheath of the submarine cable 1; the thickness and hardness of the rubber pad can be selected according to the material and surface condition of the submarine cable 1 to provide appropriate friction force.

[0057] It is understandable that the elastic friction block 5 and the outer sheath of the submarine cable 1 have a certain angle. When the elastic friction block 5 moves along the acute angle, its deformation during the movement is small, and the friction between it and the outer sheath of the submarine cable 1 is insufficient to drive the device to move. However, when the elastic friction block 5 moves along the obtuse angle, it will deform and compress during the movement, increasing the contact pressure between it and the outer sheath of the submarine cable 1, thereby generating a larger friction force and driving the device forward.

[0058] The half-gear transmission assembly 4 includes a vertical transmission shaft 41 rotatably disposed at the bottom of the inner side of the cleaning device housing 2 and a horizontal transmission shaft 42 rotatably disposed inside the cleaning device housing 2. The horizontal transmission shaft 42 is located directly above the vertical transmission shaft 41. A first half-gear structure 43 is provided at one end of the vertical transmission shaft 41 near the horizontal transmission shaft 42, and the other end of the vertical transmission shaft 41 away from the horizontal transmission shaft 42 is coaxially connected to the drive impeller 7. A second half-gear structure 44 and a third half-gear structure 45 are correspondingly provided on the horizontal transmission shaft 42 for cooperating with the first half-gear structure 43. The second half-gear structure 44 and the third half-gear structure 45 are centrally symmetrical, and both the second half-gear structure 44 and the third half-gear structure 45 are meshed with the first half-gear structure 43. There are two swing arms, and the two swing arms are symmetrically fixed at both ends of the horizontal transmission shaft 42 in the vertical direction.

[0059] It should be noted that when the drive impeller 7 drives the vertical transmission shaft 41 to rotate, the first half gear structure 43 set at the top of the vertical transmission shaft 41 will first mesh with the second half gear structure 44 on one side (at this time, the third half gear structure 45 on the other side will disengage). At this time, the horizontal transmission shaft 42 will drive the two swing arms to swing in the first direction. As the first half gear structure 43 continues to rotate, the first half gear structure 43 disengages from the second half gear structure 44 and engages with the third half gear structure 45 on the other side. At this time, the horizontal transmission shaft 42 will drive the two swing arms to swing in the second direction opposite to the first direction. Through the switching of the above meshing relationship, the synchronous back and forth swing of the two swing arms is achieved.

[0060] The drive impeller 7 includes a vertically arranged first central shaft and a plurality of blades 13 evenly mounted circumferentially on the first central shaft. Specifically, the upper end of the first central shaft is fixedly connected to the lower end of the vertical drive shaft 41; the number of blades 13 can be adjusted according to actual needs and is not limited here.

[0061] A dual-shaft composite energy conversion device 9 is fixed to the bottom of the cleaning device housing 2 via a mounting bracket. The dual-shaft composite energy conversion device 9 includes an energy storage unit and an upper shaft drive unit and a lower shaft power generation unit coaxially arranged. The lower shaft power generation unit is electrically connected to the energy storage unit, and the energy storage unit is electrically connected to the upper shaft drive unit. The dual-shaft composite energy conversion device 9 is located directly below the drive impeller 7, and the upper shaft drive unit is coaxially driven and connected to the drive impeller 7. The lower shaft power generation unit is coaxially connected to a power generation impeller 11. During use, the ocean current drives the power generation impeller 11 to rotate, charging the energy storage unit through the lower shaft power generation unit. Specifically, the dual-shaft composite energy conversion device 9 can charge existing ocean current-powered motors. These motors have a unique energy conversion mechanism; under the action of ocean currents, the motors can be charged. When the device encounters significant resistance during the cleaning process and may jam, the charged motor can continue to drive the device forward, ensuring the smooth progress of the cleaning work and effectively preventing the device from failing to complete the cleaning task due to jamming.

[0062] Understandably, the lower shaft power generation unit is used to convert fluid kinetic energy into electrical energy; the energy storage unit is used to store the electrical energy generated by the lower shaft power generation unit and to supply power to the upper shaft drive unit, which is used to convert electrical energy into mechanical energy for output.

[0063] Specifically, the mounting bracket includes horizontal connecting plates 14 symmetrically fixed radially to both sides of the cleaning device housing 2, a horizontal fixing disk 10 disposed directly below the drive impeller 7, and a support column 12 disposed between the horizontal connecting plates 14 and the horizontal fixing disk 10. One end of the support column 12 is fixedly connected to the lower surface of the horizontal connecting plates 14, and the other end is fixedly connected to the upper surface of the horizontal fixing disk 10. The dual-shaft composite energy conversion device 9 is fixedly disposed on the horizontal fixing disk 10, and the power generation impeller 11 is located below the horizontal fixing disk 10. The shape of the horizontal fixing disk 10 can be circular.

[0064] It should be noted that waterproof sealing measures must be taken when installing the dual-axis composite energy conversion device 9 to prevent seawater from entering and damaging the device. Specifically, a waterproof sealing ring can be used at the connection between the dual-axis composite energy conversion device 9 and the horizontal fixing plate 10 to prevent seawater from entering the device through gaps; waterproof sealant should be applied to the wiring points of the device to ensure that the electrical connections are not corroded by seawater, thereby ensuring the normal operation of the dual-axis composite energy conversion device 9 in the marine environment.

[0065] The generator impeller 11 includes a vertically arranged second central shaft and a plurality of blades 13 evenly installed circumferentially on the second central shaft. The upper end of the second central shaft is fixedly connected to the lower shaft generator unit. Specifically, the number of blades 13 can be adjusted according to actual needs and is not limited here.

[0066] Preferably, the blade 13 is installed at a 30° angle to maximize the utilization of ocean current energy. The blade 13 is made of a corrosion-resistant material to adapt to the complex marine environment. Specifically, the corrosion-resistant material can be nickel-aluminum bronze, carbon fiber composite material, or titanium alloy, etc.

[0067] There are multiple rolling support shafts 3, which are evenly distributed circumferentially. Preferably, the rolling support shafts 3 can be gear shafts.

[0068] In practical use, the marine organism removal device for the outer sheath of the submarine cable is installed on the submarine cable 1. The ocean current acts on the blades 13 of the power generation impeller 11 and the drive impeller 7, causing them to rotate. The drive impeller 7, through the half-gear transmission assembly 4, drives the swing arms on both sides of the outer sheath of the submarine cable 1 to swing, providing forward power for the device to move along the submarine cable 1. During this movement, the tapering structure of the trumpet-shaped extruder 8 extrudes the marine organisms attached to the outer sheath of the submarine cable 1, achieving the purpose of cleaning the submarine cable 1. When encountering significant resistance that could cause the device to jam, the ocean current drives the power generation impeller 11 to charge the dual-shaft composite energy conversion device 9. The charged dual-shaft composite energy conversion device 9 then drives the drive impeller 7 to rotate, further propelling the device forward and ensuring the smooth progress of the cleaning work.

[0069] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A device for cleaning biological deposits attached to the outer sheath of a submarine cable, characterized in that, include: A cleaning device housing coaxially sleeved on the outer sheath of a submarine cable and a swing-arm friction walking mechanism mounted on the cleaning device housing; The outer shell of the cleaning device is a cylindrical sleeve structure, and a trumpet-shaped extruder is provided at the front end of the outer shell of the cleaning device; The large end of the trumpet-shaped extruder is fixedly connected to the front end of the cleaning device housing, and the inner side of the small end is attached to the outer sheath of the submarine cable to expel marine organisms attached to the outer sheath of the submarine cable. A rolling support shaft is provided on the upper inner side of the cleaning device housing; The outer surface of the rolling support shaft contacts the outer sheath of the submarine cable, which is used to support the device and moves the submarine cable through the rolling friction assist device. The swing-arm friction walking mechanism includes swing arms symmetrically arranged on both sides of the outer sheath of the submarine cable, a half-gear transmission assembly installed on the lower inner side of the cleaning device housing, and a drive impeller for rotating under the action of ocean currents. The drive impeller is located directly below the housing of the cleaning device, and the drive impeller is connected to the swing arm through the half-gear transmission assembly to drive the swing arm to swing, thereby driving the device forward through the friction between the swing arm and the outer sheath of the submarine cable. The swing arm includes a swing rod and an elastic friction block; The elastic friction block is fixed at an angle along the horizontal direction on the side of the swing rod near the outer sheath of the submarine cable, and the elastic friction block is in close contact with the outer sheath of the submarine cable, so that the elastic friction block generates effective driving friction force in only one direction during the swing of the swing rod. The half-gear transmission assembly includes a vertical transmission shaft rotatably disposed at the bottom of the inner side of the cleaning device housing and a horizontal transmission shaft rotatably disposed within the cleaning device housing. The horizontal drive shaft is located directly above the vertical drive shaft; The vertical drive shaft is provided with a first half gear structure at one end near the horizontal drive shaft, and the vertical drive shaft is coaxially connected to the drive impeller at the other end away from the horizontal drive shaft. The horizontal transmission shaft is provided with a second half-gear structure and a third half-gear structure for cooperating with the first half-gear structure. The second half-gear structure and the third half-gear structure are centrally symmetrical, and both the second half-gear structure and the third half-gear structure are meshed with the first half-gear structure. The number of swing arms is two, and the two swing arms are symmetrically fixed at both ends of the horizontal transmission shaft in the vertical direction.

2. The biological removal device for the outer sheath of submarine cables according to claim 1, characterized in that, The drive impeller includes a vertically arranged first central shaft and a plurality of blades uniformly mounted on the first central shaft in a circumferential direction.

3. The biological removal device for the outer sheath of submarine cables according to claim 1, characterized in that, A dual-axis composite energy conversion device is fixed to the bottom of the outer shell of the cleaning device by a fixing frame; The dual-axis composite energy conversion device includes an energy storage unit and an upper axis drive unit and a lower axis power generation unit arranged coaxially. The lower shaft power generation unit is electrically connected to the energy storage unit; The energy storage unit is electrically connected to the upper shaft drive unit; The dual-shaft composite energy conversion device is located directly below the drive impeller, and the upper shaft drive unit is coaxially driven and connected to the drive impeller. The lower shaft power generation unit is coaxially connected to a power generation impeller.

4. The biological removal device for the outer sheath of submarine cables according to claim 3, characterized in that, The fixing frame includes horizontal connecting plates that are symmetrically fixed radially to both sides of the cleaning device housing, a horizontal fixing plate disposed directly below the drive impeller, and a support column disposed between the horizontal connecting plates and the horizontal fixing plate; One end of the support column is fixedly connected to the lower surface of the horizontal connecting plate, and the other end is fixedly connected to the upper surface of the horizontal fixing plate. The dual-axis composite energy conversion device is fixedly mounted on the horizontal fixed plate; The power generation impeller is located below the horizontal fixed disk.

5. The biological removal device for the outer sheath of submarine cables according to claim 3, characterized in that, The power generation impeller includes a vertically arranged second central shaft and a plurality of blades uniformly installed circumferentially on the second central shaft; The upper end of the second central shaft is fixedly connected to the lower shaft power generation unit.

6. The biological removal device for the outer sheath of submarine cables according to claim 2 or 5, characterized in that, The blade is installed at an angle of 30°.

7. The device for cleaning biological deposits attached to the outer sheath of submarine cables according to claim 1, characterized in that, The number of the rolling support shafts is multiple; The multiple rolling support shafts are evenly distributed circumferentially.

8. The biological removal device for the outer sheath of submarine cables according to claim 1, characterized in that, The rolling support shaft is a gear shaft.

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