Underwater cable laying device and use method thereof

Abstract

The invention discloses an underwater cable laying device and a use method thereof, and the underwater cable laying device comprises a laying track shell, a self-scraping mechanism, a limiting protection assembly and an auxiliary clamping mechanism. The self-scraping mechanism comprises a plurality of fixing sleeve frames, upper supporting shaft rods are rotationally arranged in the fixing sleeve frames, rotating supporting wheels are fixedly installed on the upper supporting shaft rods, a plurality of power fan blades which are evenly distributed are fixedly installed on the rotating supporting wheels, a lower transmission shaft rod is arranged on one side of the laying track shell, and a plurality of fixing sleeve wheels are installed on the lower transmission shaft rod. A plurality of uniformly distributed scraping fan blades are fixedly mounted on the fixed sleeve wheel; the limiting protection assembly comprises a plurality of limiting pipe clamping seats, and each limiting pipe clamping seat is provided with a pair of side clamping sleeves. Through arrangement of corresponding mechanisms, the underwater cable cannot be covered by silt, so that the heat dissipation effect of the underwater cable cannot be affected, the temperature of the underwater cable is prevented from being too high, the service life of the device is prolonged, and the probability of faults is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of cable laying, and particularly relates to an underwater cable laying device and a method for using the same. Background Art

[0002] Underwater cables are mainly used for underwater power transmission, delivering electrical energy from power plants, substations, etc. to where it is needed, such as power transmission between offshore wind farms and the land, power supply between islands and the mainland, etc. Among them, when laying underwater cables, heat dissipation issues usually need to be considered. Although water has relatively good heat dissipation performance, there are still many factors in actual laying that make heat dissipation an important consideration.

[0003] When an underwater cable transmits electricity, due to the existence of conductor resistance, heat is generated when current passes through, and the heat is proportional to the square of the current. As the transmission power increases and the cable current-carrying capacity increases, the generated heat will also increase significantly. If it cannot be dissipated in time, it will cause the cable temperature to rise. Excessive temperature will accelerate the aging of the cable insulation material, reduce the insulation performance, shorten the service life of the cable, and may cause faults such as insulation breakdown, affecting the power supply reliability. Although water flow has a certain heat dissipation effect, if it is covered by silt, it will seriously hinder heat dissipation, and there is also a lack of silt removal devices in the existing technology, so that the underwater cable will be covered by sediment after long-term use, thereby affecting heat dissipation.

[0004] The information disclosed in this background art section is only intended to enhance the overall understanding of the present invention and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Invention

[0005] The purpose of the present invention is to provide an underwater cable laying device and a method for using the same, which can solve the problem that the underwater cable is easily covered by sediment after long-term use in the existing technology, affecting heat dissipation.

[0006] To achieve the above purpose, the technical solution provided by a specific embodiment of the present invention is as follows:

[0007] An underwater cable laying device includes: a laying track shell, a self-scraping mechanism, a limit protection assembly, and an auxiliary clamping mechanism;

[0008] The self-scraping mechanism is installed on one side of the laying track shell. The self-scraping mechanism includes a plurality of fixed sleeve frames. An upper support shaft rod is rotatably arranged in the fixed sleeve frame. A rotating support wheel is fixedly installed on the upper support shaft rod. A plurality of uniformly distributed power fan blades are fixedly installed on the rotating support wheel. A lower transmission shaft rod is arranged on one side of the laying track shell. The lower transmission shaft rod penetrates through a plurality of the fixed sleeve frames. A plurality of fixed sleeve wheels are installed on the lower transmission shaft rod. A plurality of uniformly distributed scraping fan blades are fixedly installed on the fixed sleeve wheels;

[0009] The limit protection component is installed on the laying track shell. The limit protection component includes a plurality of limit pipe clamp seats. A plurality of the limit pipe clamp seats are all fixed inside the laying track shell. A pair of side clamping sleeves are arranged on the limit pipe clamp seats. A plurality of protection sliding covers are arranged above the plurality of limit pipe clamp seats. The top surface of the protection sliding cover is sloped;

[0010] The auxiliary clamping mechanism is installed between a pair of the limit pipe clamp seats. The auxiliary clamping mechanism is used to assist in fixing the cable, ensuring the stability of the cable, thereby reducing the probability of cable damage.

[0011] In one or more embodiments of the present invention, a plurality of uniformly distributed support column legs are installed below the laying track shell for supporting and fixing the laying track shell. By driving the support column legs into the ground, the laying track shell will not shift or tilt, thereby ensuring the stability of the cable and enabling the water flow to continuously drive the rotation of the rotating support wheel and the scraping fan blades.

[0012] In one or more embodiments of the present invention, a side auxiliary track is fixedly installed on one side of the laying track shell close to a plurality of fixed sleeve frames. A plurality of the fixed sleeve frames are all installed on the side auxiliary track for fixing the fixed sleeve frames, so that the fixed sleeve frames will not fall off and are not prone to tilting, thereby ensuring that the rotating support wheel and the power fan blades are always perpendicular to the water flow direction;

[0013] A plurality of uniformly distributed water-permeable holes are drilled in the laying track shell and the side auxiliary track. Filter screens are installed on the side walls of some of the water-permeable holes. The filter screens can block sediment from entering the laying track shell, so that it will not adhere to the cable, avoiding affecting the heat dissipation of the cable and enabling the outer surface of the cable to always be in contact with the water flow.

[0014] In one or more embodiments of the present invention, connecting bearings are fixedly connected between the two ends of the upper support shaft rod and the fixed sleeve frame, which are used to support and fix the upper support shaft rod, prevent the upper support shaft rod from falling off or shifting, ensure the stability of the upper support shaft rod, and enable the upper support shaft rod to rotate freely without being affected by the fixed sleeve frame. Fixed bearings are fixedly connected between the lower transmission shaft rod and multiple fixed sleeve frames, which are used to fix the lower transmission shaft rod, prevent the lower transmission shaft rod from tilting and shaking, and then stably drive the fixed sleeve wheel and the scraping fan blade to rotate, facilitating the scraping of the surface of the side auxiliary track and achieving the effect that sediment is not easily attached.

[0015] In one or more embodiments of the present invention, transmission belts are connected between the two ends of the upper support shaft rod and the lower transmission shaft rod, which are used to link the upper support shaft rod and the lower transmission shaft rod, so that the upper support shaft rod can drive the lower transmission shaft rod to rotate, and then drive multiple fixed sleeve wheels and scraping fan blades to rotate, achieving the self-scraping effect, making sediment not easily attached, ensuring sufficient contact between water flow and the cable, and not easily affecting the heat dissipation effect of the cable.

[0016] In one or more embodiments of the present invention, a shielding cover is fixed on one side of the fixed sleeve frame, which is used to shield part of the power fan blades, so that the water flow can only impact on the power fan blades above the shielding cover, and then drive the rotating support wheel to rotate through the structure of the power fan blades. An arc-shaped groove is dug in the shielding cover to facilitate the rotation of multiple power fan blades and prevent obstruction.

[0017] In one or more embodiments of the present invention, a plurality of uniformly distributed limiting bottom plates are fixed in the laying track shell, which are used to support the limiting slider, prevent the limiting slider from moving, and then play a role in limiting the protection sliding cover. The limiting slider is fixed on the limiting bottom plate, which is used to play a role in limiting and supporting the protection sliding cover, prevent the protection sliding cover from falling off, and enable the protection sliding cover to slide on the limiting slider;

[0018] A limiting chute matching the limiting slider is dug in the protection sliding cover. A plurality of fixing bolts are inserted into the protection sliding cover. One end of the fixing bolt is threadedly connected with the limiting slider and the limiting bottom plate, so that the protection sliding cover cannot move, thus enabling the protection sliding cover to play a shielding role, preventing sediment from entering the laying track shell, and facilitating the disassembly and installation by the staff.

[0019] In one or more embodiments of the present invention, the auxiliary clamping mechanism includes a pair of limit guide rods for supporting the auxiliary clamping sleeves, enabling the auxiliary clamping sleeves to slide while being less likely to fall off. The two ends of the pair of limit guide rods are respectively fixed to the laying track shell to prevent the limit guide rods from falling off and improve the support stability of the device. A pair of auxiliary clamping sleeves are slidably arranged on the pair of limit guide rods for auxiliary clamping of the cable, so that the cable cannot shake or skew, improving the protection effect on the cable and reducing the probability of cable damage.

[0020] In one or more embodiments of the present invention, a driving screw is arranged between the pair of limit guide rods for driving the pair of auxiliary clamping sleeves to move away from and close to each other, thereby realizing the clamping and release of the cable. Support bearings are fixedly connected between the two ends of the driving screw and the laying track shell for fixing the driving screw to prevent the driving screw from shaking or skewing. The driving screw is threadedly connected to both pairs of auxiliary clamping sleeves and the threading directions are opposite, so that the rotation of the driving screw can drive the pair of auxiliary clamping sleeves to move away from or close to each other.

[0021] A method for using an underwater cable laying device includes the following steps:

[0022] S1. Install the laying track shell across the middle of the river and ensure that the water flow direction is from the fixed sleeve frame to the laying track shell. At this time, the water flow will push multiple power fan blades, drive the rotating support wheels to rotate through the multiple power fan blades, and the rotating support wheels will drive the upper support shaft rod to rotate, and then drive the lower transmission shaft rod to rotate through the transmission belt;

[0023] S2. Moreover, the water flow will flow into the laying track shell through the water permeable holes, so as to be able to contact the cable in the laying track shell to achieve heat dissipation of the cable. And the continuous flow of the water flow will continuously dissipate heat from the cable. The sediment in the water flow will be blocked by the screen on the water permeable holes, but due to the water pressure, the sediment will accumulate on the screen;

[0024] S3. After the lower transmission shaft rod rotates, it will drive multiple fixed sleeve wheels and scraping fan blades to rotate. The rotation of the scraping fan blades can scrape the sediment on the screen, and after the sediment is scraped off, the water flow can be used to wash it away, so that the sediment will not accumulate on the laying track shell or the side auxiliary track;

[0025] S4. When the cable needs to be adjusted or maintained, first rotate the fixing bolt so that the fixing bolt is no longer threadedly connected to the limit bottom plate and the limit slider, and then slide the protection sliding cover so that the protection sliding cover no longer seals the top of the laying track shell. Then rotate the driving screw to drive the pair of auxiliary clamping sleeves to move away from each other, thereby releasing the fixation of the cable, and finally the corresponding cable can be maintained.

[0026] Compared with the prior art, through the setting of corresponding mechanisms, the underwater cable of the present invention will not be covered by sediment, so that the heat dissipation effect of the underwater cable will not be affected, the temperature of the underwater cable will not be too high, the service life of the device will be prolonged, and the probability of failure will be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 It is a perspective view of an underwater cable laying device in an embodiment of the present invention;

[0029] Figure 2 It is Figure 1 the structural schematic diagram shown at A in

[0030] Figure 3 It is a side sectional view of an underwater cable laying device in an embodiment of the present invention;

[0031] Figure 4 It is a partial structural schematic diagram of a side auxiliary track in an embodiment of the present invention;

[0032] Figure 5 It is a partial sectional view of a self-scraping mechanism in an embodiment of the present invention;

[0033] Figure 6 It is Figure 5 the structural schematic diagram shown at B in

[0034] Figure 7 It is a partial structural schematic diagram of a laying track shell in an embodiment of the present invention;

[0035] Figure 8 It is a structural sectional view of a protection sliding cover in an embodiment of the present invention;

[0036] Figure 9 It is a structural schematic diagram of a limit pipe clamp in an embodiment of the present invention;

[0037] Figure 10 It is a structural schematic diagram of an auxiliary clamping mechanism in an embodiment of the present invention.

[0038] Main reference numeral description:

[0039] 1 - Laying track shell, 101 - Support column leg, 102 - Side auxiliary track, 103 - Water permeable hole, 2 - Self - scraping mechanism, 201 - Fixed sleeve frame, 202 - Upper support shaft rod, 203 - Rotating support wheel, 204 - Power fan blade, 205 - Lower transmission shaft rod, 206 - Fixed sleeve wheel, 207 - Scraping fan blade, 208 - Connecting bearing, 209 - Transmission belt, 210 - Shielding cover, 211 - Arc groove, 212 - Fixed bearing, 3 - Limit protection component, 301 - Limit pipe clamp seat, 302 - Side clamp sleeve, 303 - Protection sliding cover, 304 - Limit bottom plate, 305 - Limit sliding block, 306 - Limit sliding groove, 307 - Fixed bolt, 4 - Auxiliary clamping mechanism, 401 - Limit guiding rod, 402 - Driving screw rod, 403 - Support bearing, 404 - Auxiliary clamp sleeve. Detailed implementation mode

[0040] In order to enable those skilled in the art of this technology to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0041] As Figures 1 - 10 shown, an underwater cable laying device in an embodiment of the present invention includes: a laying track shell 1, a self - scraping mechanism 2, a limit protection component 3, and an auxiliary clamping mechanism 4.

[0042] As Figures 1 - 4 shown, a plurality of uniformly distributed support column legs 101 are installed below the laying track shell 1, which are used to support and fix the laying track shell 1. By driving the support column legs 101 into the ground, the laying track shell 1 will not shift or tilt, thereby ensuring the stability of the cable and enabling the water flow to continuously drive the rotation of the rotating support wheel 203 and the scraping fan blade 207. One side of the laying track shell 1 close to the plurality of fixed sleeve frames 201 is fixedly installed with a side auxiliary track 102, and the plurality of fixed sleeve frames 201 are all installed on the side auxiliary track 102, which is used to fix the fixed sleeve frames 201, so that the fixed sleeve frames 201 will not fall off and are not prone to tilting, thereby ensuring that the rotating support wheel 203 and the power fan blade 204 are always perpendicular to the water flow direction.

[0043] Specifically, a plurality of uniformly distributed water permeable holes 103 are drilled in the laying track shell 1 and the side auxiliary track 102, and filter screens are installed on the side walls of some of the water permeable holes 103. The filter screens can block sediment from entering the laying track shell 1, so that it will not adhere to the cable, avoiding affecting the heat dissipation of the cable and enabling the outer surface of the cable to always be in contact with the water flow.

[0044] As Figures 1 - 6 shown, the self-scraping mechanism 2 is installed on one side of the laying track shell 1. The self-scraping mechanism 2 includes a plurality of fixed sleeve frames 201 for fixing the upper support shaft rod 202 to prevent the upper support shaft rod 202 from shaking and skewing, providing a supporting force for the rotating support wheel 203 and a plurality of power fan blades 204. The upper support shaft rod 202 is rotatably arranged in the fixed sleeve frame 201 for supporting the rotating support wheel 203. The rotating support wheel 203 is fixedly installed on the upper support shaft rod 202 for supporting a plurality of power fan blades 204 and having the function of driving the upper support shaft rod 202 to rotate, and further driving the lower transmission shaft rod 205 to rotate through the transmission belt 209.

[0045] As Figures 1 - 6 shown, a plurality of uniformly distributed power fan blades 204 are fixedly installed on the rotating support wheel 203 for blocking water flow, so as to drive the rotating support wheel 203 and the power fan blades 204 to rotate through the water flow, and further drive the rotation of the lower transmission shaft rod 205, providing conditions for the rotation of the fixed sleeve wheel 206 and the scraping fan blade 207. The lower transmission shaft rod 205 is arranged on one side of the laying track shell 1 and penetrates through a plurality of fixed sleeve frames 201.

[0046] Specifically, a plurality of fixed sleeve wheels 206 are installed on the lower transmission shaft rod 205 for supporting a plurality of scraping fan blades 207 and driving the scraping fan blades 207 to rotate, so as to be able to scrape the sediment on the side auxiliary track 102, prevent the sediment from entering the laying track shell 1 and affecting the heat dissipation of the cable. A plurality of uniformly distributed scraping fan blades 207 are fixedly installed on the fixed sleeve wheel 206.

[0047] As Figures 1 - 6 shown, connecting bearings 208 are fixedly connected between both ends of the upper support shaft rod 202 and the fixed sleeve frame 201 for supporting and fixing the upper support shaft rod 202, preventing the upper support shaft rod 202 from falling off or shifting, ensuring the stability of the upper support shaft rod 202, and enabling the upper support shaft rod 202 to rotate freely without being easily affected by the fixed sleeve frame 201. Fixed bearings 212 are fixedly connected between the lower transmission shaft rod 205 and a plurality of fixed sleeve frames 201 for fixing the lower transmission shaft rod 205 to prevent the lower transmission shaft rod 205 from skewing and shaking, and further being able to stably drive the fixed sleeve wheel 206 and the scraping fan blade 207 to rotate, facilitating the scraping of the surface of the side auxiliary track 102 and achieving the effect of not easily adhering sediment.

[0048] Specifically, drive belts 209 are connected between both ends of the upper support shaft rod 202 and the lower drive shaft rod 205, which are used to link the upper support shaft rod 202 and the lower drive shaft rod 205 together, so that the upper support shaft rod 202 can drive the lower drive shaft rod 205 to rotate, and further drive a plurality of fixed sleeve wheels 206 and scraping fan blades 207 to rotate, achieving the effect of self-scraping, making it difficult for sediment to adhere, ensuring sufficient contact between the water flow and the cable, and not easily affecting the heat dissipation effect of the cable.

[0049] In addition, a shielding cover 210 is fixed on one side of the fixed sleeve frame 201, which is used to shield part of the power fan blades 204, so that the water flow can only impact on the power fan blades 204 located above the shielding cover 210. Then, through the structure of the power fan blades 204, the rotating support wheel 203 can be driven to rotate. An arc-shaped groove 211 is drilled in the shielding cover 210, which is convenient for the plurality of power fan blades 204 to rotate and is not easily blocked.

[0050] As Figures 1 - 8 shown, the limit protection assembly 3 is installed on the laying track shell 1. The limit protection assembly 3 includes a plurality of limit pipe clamp seats 301, and the plurality of limit pipe clamp seats 301 are all fixed inside the laying track shell 1, which are used to assist in fixing the cable, making it difficult for the cable to shake and skew, and improving the protection effect on the cable. A pair of side clamp sleeves 302 are arranged on the limit pipe clamp seats 301, and a plurality of protection sliding covers 303 are arranged above the plurality of limit pipe clamp seats 301. The top surface of the protection sliding cover 303 is sloped.

[0051] As Figures 1 - 8 shown, a plurality of uniformly distributed limit bottom plates 304 are fixed inside the laying track shell 1, which are used to support the limit sliding blocks 305, making it difficult for the limit sliding blocks 305 to move, thereby playing a role in limiting the protection sliding cover 303. Limit sliding blocks 305 are fixed on the limit bottom plates 304, which are used to play a role in limiting and supporting the protection sliding cover 303, preventing the protection sliding cover 303 from falling off, and enabling the protection sliding cover 303 to slide on the limit sliding blocks 305.

[0052] Among them, a limit sliding groove 306 matching the limit sliding block 305 is drilled in the protection sliding cover 303. A plurality of fixing bolts 307 are inserted into the protection sliding cover 303. One end of the fixing bolts 307 is threadedly connected to the limit sliding block 305 and the limit bottom plate 304, making it impossible for the protection sliding cover 303 to move, so that the protection sliding cover 303 plays a shielding role, preventing sediment from entering the laying track shell 1, and being convenient for staff to disassemble and install.

[0053] As Figures 1 - 10As shown in the figure, the auxiliary clamping mechanism 4 is installed between a pair of limit pipe clamps 301. The auxiliary clamping mechanism 4 is used to assist in fixing the cable, ensuring the stability of the cable, and thus reducing the probability of cable damage. The auxiliary clamping mechanism 4 includes a pair of limit guide rods 401, which are used to support the auxiliary clamping sleeve 404, enabling the auxiliary clamping sleeve 404 to slide but not easily fall off. The two ends of the pair of limit guide rods 401 are respectively fixed on the laying track shell 1 to prevent the limit guide rods 401 from falling off and improve the support stability of the device. A pair of auxiliary clamping sleeves 404 are slidably arranged on the pair of limit guide rods 401, which are used to assist in clamping the cable, so that the cable cannot shake or skew, improving the protection effect on the cable and reducing the probability of cable damage.

[0054] As Figures 1 - 10 shown, a driving screw rod 402 is arranged between the pair of limit guide rods 401, which is used to drive the pair of auxiliary clamping sleeves 404 to move away from and close to each other, so as to realize the clamping and release of the cable. Support bearings 403 are fixedly connected between the two ends of the driving screw rod 402 and the laying track shell 1, which are used to fix the driving screw rod 402, making the driving screw rod 402 not easily shake or skew. The driving screw rod 402 is threadedly connected to the pair of auxiliary clamping sleeves 404 and the threaded connection directions are opposite, so that the rotation of the driving screw rod 402 can drive the pair of auxiliary clamping sleeves 404 to move away from or close to each other.

[0055] A method for using an underwater cable laying device includes the following steps:

[0056] S1. Install the laying track shell 1 in the middle of the river crossing, and make the water flow direction from the fixed sleeve frame 201 to the laying track shell 1. At this time, the water flow will push multiple power fan blades 204, drive the rotating support wheel 203 to rotate through the multiple power fan blades 204, and the rotating support wheel 203 will drive the upper support shaft rod 202 to rotate, and then drive the lower drive shaft rod 205 to rotate through the transmission belt 209;

[0057] S2. Moreover, the water flow will flow into the laying track shell 1 from the water permeable holes 103, so as to be able to contact the cable in the laying track shell 1 to realize heat dissipation of the cable. And the continuous flow of the water flow will continuously dissipate heat from the cable. The sediment in the water flow will be blocked by the screen on the water permeable holes 103, but due to the water pressure, the sediment will accumulate on the screen;

[0058] S3. After the lower drive shaft rod 205 rotates, it will drive multiple fixed sleeve wheels 206 and scraping fan blades 207 to rotate. The rotation of the scraping fan blades 207 can scrape the sediment on the screen, and after the sediment is scraped off, the water flow can be used to wash it away, so that the sediment will not accumulate on the laying track shell 1 or the side auxiliary track 102;

[0059] S4. When cable adjustment or maintenance is required, first rotate the fixing bolt 307 so that the fixing bolt 307 is no longer threadedly connected to the limit bottom plate 304 and the limit slider 305. Then slide the protection sliding cover 303 so that the protection sliding cover 303 no longer blocks the top of the laying track shell 1. Then rotate the driving screw 402 to drive a pair of auxiliary clamping sleeves 404 to move away from each other through the driving screw 402, thereby releasing the fixation of the cable. Finally, maintenance can be carried out on the corresponding cable.

[0060] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0061] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An underwater cable laying device, characterized in that: include: laying track shells; A self-scraping mechanism is installed on one side of the track laying shell, and the self-scraping mechanism includes a plurality of fixed sleeves, an upper support shaft is rotatably arranged in the fixed sleeve, a rotating support wheel is fixedly installed on the upper support shaft, and a plurality of evenly distributed power blades are fixedly installed on the rotating support wheel, and a lower transmission shaft is arranged on one side of the track laying shell, and the lower transmission shaft passes through the plurality of fixed sleeves, and a plurality of fixed sleeve wheels are installed on the lower transmission shaft, and a plurality of evenly distributed scraping blades are fixedly installed on the fixed sleeve wheel; A position limiting protection component is installed on the laying track shell, the position limiting protection component includes a plurality of position limiting pipe clamp seats, the plurality of position limiting pipe clamp seats are fixed in the laying track shell, a pair of side clamp sleeves are arranged on the position limiting pipe clamp seats, a plurality of protection slide covers are arranged above the plurality of position limiting pipe clamp seats, and the top surface of the protection slide cover is arranged with a slope; The auxiliary clamping mechanism is installed between a pair of the position-limiting pipe clamp seats, and the auxiliary clamping mechanism is used to assist in fixing the cable to ensure the stability of the cable, thereby reducing the probability of cable damage.

2. An underwater cable laying device according to claim 1, characterized in that: A plurality of evenly distributed supporting column legs are installed below the track laying shell.

3. The underwater cable laying device according to claim 1, characterized in that: A side auxiliary track is fixedly installed on one side of the laying track shell close to multiple fixed sleeves, and multiple fixed sleeves are installed on the side auxiliary track. Multiple evenly distributed water holes are drilled on the laying track shell and the side auxiliary track, and filter screens are installed on the side walls of some of the water holes.

4. The underwater cable laying device according to claim 1, characterized in that: Connecting bearings are fixedly connected between both ends of the upper supporting shaft and the fixed sleeves, and fixed bearings are fixedly connected between the lower transmission shaft and a plurality of fixed sleeves.

5. The underwater cable laying device according to claim 1, characterized in that: Transmission belts are connected between the two ends of the upper support shaft and the lower transmission shaft.

6. The underwater cable laying device according to claim 1, characterized in that: A shielding cover is fixed on one side of the fixed sleeve frame, and an arc groove is cut in the shielding cover.

7. The underwater cable laying device according to claim 1, characterized in that: A plurality of evenly distributed limit base plates are fixed in the track laying shell, a limit slider is fixed on the limit base plate, a limit slide groove matching the limit slider is drilled in the protection slide cover, a plurality of fixing bolts are inserted on the protection slide cover, and one end of the fixing bolt is threadedly connected with the limit slider and the limit base plate.

8. The underwater cable laying device according to claim 1, characterized in that: The auxiliary clamping mechanism comprises a pair of limiting guide rods, both ends of which are respectively fixed on the laying track shell, and a pair of auxiliary clamping sleeves are slidably arranged on the pair of limiting guide rods.

9. An underwater cable laying device according to claim 8, characterized in that: A driving screw is arranged between a pair of the limiting guide rods, and support bearings are fixedly connected between the two ends of the driving screw and the track laying shell. The driving screw is threadedly connected to a pair of auxiliary jackets, and the threaded connection directions are opposite.

10. A method for using the underwater cable laying device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Install the track shell across the river, and make the water flow from the fixed frame to the track shell. At this time, the water flow will push the multiple power blades, and the multiple power blades will drive the rotating support wheel to rotate. The rotating support wheel will drive the upper support shaft to rotate, and then drive the lower transmission shaft to rotate through the transmission belt; S2. Moreover, water will flow into the track shell from the water-permeable holes, so that it can contact the cables in the track shell to achieve heat dissipation of the cables. The continuous flow of water will continue to dissipate heat for the cables, and the silt in the water will be blocked by the screen on the water-permeable holes. However, due to the pressure of the water flow, the silt will accumulate on the screen. S3. When the lower transmission shaft rotates, it drives multiple fixed sleeve wheels and scraping blades to rotate. The rotation of the scraping blades can scrape away the silt on the screen. After the silt is scraped away, it can be washed away by water flow, so that the silt will not accumulate on the laying track shell or the side auxiliary track; S4. When the cable needs to be adjusted or maintained, first rotate the fixing bolt so that the fixing bolt is no longer threadedly connected to the limit base plate and the limit slider, then slide the protective slide cover so that the protective slide cover no longer blocks the top of the track shell, and then rotate the driving screw to drive a pair of auxiliary jackets away from each other, thereby releasing the fixation of the cable, and finally the corresponding cable can be maintained.

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