Cable tension buffering mechanism in a cable-laying process of a cable-laying ship

Abstract

The utility model discloses a kind of cable ship cable laying process in cable tension buffer mechanism, including support column, the inside of support column is provided with the cavity of placing battery, the top of support column is provided with supporting plate, and the top of the supporting plate is provided with top plate, the top of top plate is provided with two supporting wheels by support rod, two nickel-titanium alloy springs are installed in parallel between supporting plate and top plate, nitrile rubber air bag is arranged between supporting plate and top plate between two nickel-titanium alloy springs.The utility model nitrile rubber air bag inside is provided with air pressure sensor, can monitor air bag pressure in real time, and air pressure is adjusted by micro inflation and deflation pump, when the pressure generated by cable tension is more than threshold value, air bag deflates;If pressure is less than threshold value, air bag inflates, ensure that cable always maintains suitable tension in the process of cable laying, avoid excessive tension or slack.

Description

Technical Field

[0001] This utility model relates to the field of cable tension buffering technology, specifically a cable tension buffering mechanism for cable laying process of a cable-laying vessel. Background Technology

[0002] In the field of marine engineering, cable-laying vessels are core equipment for laying submarine infrastructure such as optical cables, electrical cables, and oil pipelines. The stability of their cable-laying operations directly determines the accuracy and service life of the submarine facilities. During the cable-laying process, the cables must withstand tension fluctuations from multiple sources: on the one hand, the turbulence and displacement of the hull caused by waves and ocean currents can lead to sudden increases or decreases in cable tension; on the other hand, complex seabed topography (such as reefs and silt deposits) can easily cause cable jamming, or the speed of the winch's cable deployment and retrieval may not match the speed of the hull's movement, both of which can cause abnormal cable tension. If these tension fluctuations cannot be effectively buffered and controlled, it can lead to cable surface wear and internal structural damage, shortening its service life, or even cable breakage, causing huge economic losses and marine environmental pollution. Therefore, cable tension buffering mechanisms are a key core component of cable-laying vessels.

[0003] Currently, the industry's buffering solutions for cable tension control on cable-laying vessels rely on the elastic deformation of metal springs to absorb tension impacts. However, when encountering significant impacts such as cable jamming, the springs are prone to permanent deformation or even breakage, losing their buffering capacity. Furthermore, existing buffering mechanisms generally lack energy recovery capabilities, resulting in energy waste. Summary of the Invention

[0004] The purpose of this invention is to provide a cable tension buffering mechanism during the cable laying process of a cable-laying vessel, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cable tension buffer mechanism during the cable laying process of a cable-laying vessel, comprising a support column, the interior of which is provided with a cavity for placing a storage battery, a support plate on the top of the support column, and a top plate above the support plate, with two support wheels arranged in parallel on the top of the top plate via support rods, two nickel-titanium alloy springs installed in parallel between the support plate and the top plate, and a nitrile rubber airbag arranged between the support plate and the top plate between the two nickel-titanium alloy springs; Both sides of the support column are equipped with pressure rods via movable shafts. The top of each pressure rod is equipped with a tension wheel via a U-shaped frame. A hydraulic telescopic damping rod is connected between the support column and the pressure rods via a movable shaft. Both the support wheel and the tensioning wheel have a miniature permanent magnet generator mounted on one end via a coupling, and each miniature permanent magnet generator is electrically connected to the battery via a wire.

[0006] Preferably, a miniature inflation / deflation pump is provided on one side of the support column. The miniature inflation / deflation pump is connected to the nitrile rubber airbag through a flexible conduit. A pressure sensor is provided inside the nitrile rubber airbag, and a solenoid valve is provided on the flexible conduit.

[0007] Preferably, a stabilizing sleeve is provided at each of the four corners of the pallet, and a guide rod extending into the interior of the stabilizing sleeve is provided at each of the four corners of the bottom of the top plate.

[0008] Preferably, the hydraulic telescopic damping rod includes a piston cylinder and a telescopic rod extending into the piston cylinder at one end, and a coil is uniformly wound around the outside of the piston cylinder, with a protective cover provided on the outside of the coil.

[0009] Preferably, a controller is provided at the top of the cavity, a sealing door is hinged to the side wall of the support column at the cavity opening, and a mounting base with fixing holes is provided at the bottom of the support column.

[0010] Preferably, the circumferential sidewalls of the support wheel and the tension wheel are provided with annular grooves adapted to the cable, and the inner wall of the annular groove is fitted with an ultra-high molecular weight polyethylene wear-resistant layer. The wear-resistant layer is fixedly connected to the wheel body of the support wheel and the tension wheel by a hot pressing process.

[0011] Preferably, a rectifier and voltage regulator module is connected in series on the wire between the micro permanent magnet generator and the battery, and the outside of the wire is wrapped with an anti-salt spray shielding layer.

[0012] This utility model provides a cable tension buffering mechanism during the cable laying process of a cable-laying vessel, which has the following significant advantages compared to the prior art: 1. This invention features a hydraulically telescopic damping rod connected to the support column and pressure rod via a movable shaft. A coil is directly wound around the outer circumference of the piston cylinder, forming a ring-shaped magnetic field region. When the magnetorheological fluid flows through the damping channel at the center of the coil, it is affected by the magnetic field. By adjusting the coil current, the viscosity of the magnetorheological fluid can be changed in real time, thereby quickly offsetting small tension fluctuations. This design significantly improves the response speed and adjustment accuracy of tension buffering, effectively preventing cable damage or breakage caused by tension fluctuations.

[0013] Two nickel-titanium alloy springs are installed side-by-side between the support plate and the top plate, and a nitrile rubber air bladder is placed between the two springs and the top plate. The nickel-titanium alloy springs possess excellent elasticity and low-temperature resistance, capable of absorbing greater tensile impacts and maintaining stable elasticity even in low-temperature environments. The nitrile rubber air bladder contains a pressure sensor that monitors the air bladder pressure in real time and regulates the pressure via a miniature inflation / deflation pump. When the pressure generated by cable tension exceeds a threshold, the air bladder deflates; if the pressure is below the threshold, the air bladder inflates. This dual buffering mechanism ensures that the cable maintains appropriate tension throughout the cable laying process, preventing excessive tension or slack.

[0014] 2. A miniature permanent magnet generator is mounted on one end of both the support wheel and the tensioning wheel via a coupling. Each miniature permanent magnet generator is electrically connected to the battery via a wire. During cable laying, the cable drives the tensioning wheel and the support wheel to rotate, converting the power into electricity through the miniature permanent magnet generators and storing it in the battery. This not only achieves energy recovery and utilization, reducing energy consumption, but also extends the service life of the equipment and improves the overall system energy efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a top view of the structure of this utility model; Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the hydraulic telescopic damping rod structure of this utility model; In the diagram: 1. Mounting base; 2. Sealed door; 3. Controller; 4. Pressure rod; 5. Tensioning wheel; 6. Support column; 7. Support plate; 8. Guide rod; 9. Top plate; 10. Support wheel; 11. Support rod; 12. Nickel-titanium alloy spring; 13. Hydraulic telescopic damping rod; 14. Movable shaft; 15. Cavity; 16. Battery; 17. Stabilizing sleeve; 18. Miniature charge / discharge pump; 19. Nitrile rubber airbag; 20. Air pressure sensor; 21. Soft conduit; 22. Solenoid valve; 23. U-shaped frame; 24. Piston cylinder; 25. Coil; 26. Protective cover; 27. Telescopic rod; 28. Miniature permanent magnet generator. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] Please see Figure 1-4 An embodiment of this utility model provides a cable tension buffer mechanism during the cable laying process of a cable-laying vessel, including a support column 6, a cavity 15 for placing a battery 16 inside the support column 6, a controller 3 at the top of the cavity 15, a sealing door 2 hinged to the side wall of the support column 6 at the opening of the cavity 15, and a mounting base 1 with fixing holes at the bottom of the support column 6.

[0019] Mounting base 1: Located at the bottom of the support column 6, mounting base 1 has multiple fixing holes for securing the entire buffer mechanism to the deck of the cable-laying vessel. Mounting base 1 is made of high-strength steel to ensure the stability and durability of the mechanism.

[0020] Support column 6: Support column 6 is an upright structure with a hollow interior, forming a cavity 15. The support column 6 is made of high-strength aluminum alloy, which is both lightweight and has good load-bearing capacity.

[0021] Cavity 15: Cavity 15 is located inside the support column 6 and is used to house the battery 16 and the controller 3. The top of cavity 15 has an opening, which is sealed by a sealing door 2 to prevent water and dust from entering.

[0022] Sealed door 2: Sealed door 2 is installed on the side wall of the supporting column 6 by means of hinges. The door adopts a waterproof and sealed design to ensure that the equipment inside the cavity 15 is not affected by the external environment. The material of sealed door 2 is corrosion-resistant stainless steel, and the surface is coated with an anti-rust coating.

[0023] Battery 16: Battery 16 is placed at the bottom of cavity 15 to provide power to controller 3. Battery 16 is made of high-capacity, long-life lithium-ion battery to ensure stable power supply over a long period of time.

[0024] Controller 3: Controller 3 is installed at the top of cavity 15 and is responsible for receiving and processing signals from the sensor and controlling the action of the buffer mechanism according to the preset program.

[0025] The top of the support column 6 is provided with a support plate 7, and a top plate 9 is provided above the support plate 7. Stabilizing sleeves 17 are provided at the four corners of the support plate 7, and guide rods 8 extending into the inside of the stabilizing sleeves 17 are provided at the four corners of the bottom of the top plate 9.

[0026] The top of the top plate 9 is provided with two support wheels 10 arranged in parallel by support rods 11. Two nickel-titanium alloy springs 12 are installed in parallel between the support plate 7 and the top plate 9. A nitrile rubber airbag 19 is provided between the support plate 7 and the top plate 9 between the two nickel-titanium alloy springs 12.

[0027] A miniature inflation / deflation pump 18 is provided on one side of the support column 6. The miniature inflation / deflation pump 18 is connected to the nitrile rubber airbag 19 through a soft conduit 21. A pressure sensor 20 is provided inside the nitrile rubber airbag 19. A solenoid valve 22 is provided on the soft conduit 21.

[0028] In this embodiment, the main components include a support column 6, a support plate 7, a top plate 9, a stabilizing sleeve 17, a guide rod 8, a support wheel 10, a nickel-titanium alloy spring 12, a nitrile rubber airbag 19, a miniature inflation / deflation pump 18, a pressure sensor 20, a soft conduit 21, and a solenoid valve 22.

[0029] Support column 6: The support column 6 is the main supporting component of the device, and a support plate 7 is installed on its top. The support column 6 can be made of high-strength steel or aluminum alloy to ensure sufficient load-bearing capacity.

[0030] Support plate 7: The support plate 7 is located on top of the supporting column 6, and stabilizing sleeves 17 are provided at its four corners. The function of the support plate 7 is to support the top plate 9 and the load above it. The material can be steel plate or high-strength plastic.

[0031] Top plate 9: The top plate 9 is located above the support plate 7, and guide rods 8 extending into the interior of the stabilizing sleeve 17 are provided at the four corners of its bottom. Two support wheels 10 are arranged side by side on the top of the top plate 9 via support rods 11. The top plate 9 can be made of aluminum alloy or composite material to reduce the overall weight.

[0032] Stabilizing sleeve 17: Stabilizing sleeve 17 is installed at the four corners of the support plate 7 to fix the guide rod 8 and ensure the stable vertical movement of the top plate 9. The material of stabilizing sleeve 17 can be nylon or other wear-resistant materials.

[0033] Guide rod 8: The guide rod 8 extends from the bottom of the top plate 9 into the interior of the stabilizing sleeve 17, serving as a guide and support to ensure the smooth vertical movement of the top plate 9. The guide rod 8 can be made of stainless steel or high-strength carbon steel.

[0034] Support wheels 10: Two support wheels 10 are arranged side by side on the top of the top plate 9 via support rods 11 to support and distribute the load above the top plate 9. The support wheels 10 can be made of rubber or polyurethane to provide good wear resistance and shock absorption.

[0035] Nickel-titanium alloy springs 12: Two nickel-titanium alloy springs 12 are installed side by side between the support plate 7 and the top plate 9 to provide elastic support and cushioning. The nickel-titanium alloy springs 12 have good elasticity and fatigue resistance.

[0036] Nitrile rubber airbag 19: A nitrile rubber airbag 19 is provided between the support plate 7 and the top plate 9 between the two nickel-titanium alloy springs 12, for adjusting the height of the top plate 9 and providing additional cushioning. The nitrile rubber airbag 19 has good airtightness and oil resistance.

[0037] Miniature inflation / deflation pump 18: A miniature inflation / deflation pump 18 is provided on one side of the support column 6 for inflating and deflating the nitrile rubber airbag 19.

[0038] Pressure sensor 20: The nitrile rubber airbag 19 is equipped with a pressure sensor 20, which is used to monitor the air pressure inside the airbag in real time and feed the data back to the control system.

[0039] Flexible conduit 21: The miniature inflation / deflation pump 18 is connected to the nitrile rubber bladder 19 via the flexible conduit 21 for gas transmission. The flexible conduit 21 can be made of silicone or other pressure-resistant tubing.

[0040] Solenoid valve 22: A solenoid valve 22 is installed on the flexible conduit 21 to control the flow and cut off of gas. The solenoid valve 22 has a fast response speed and high control accuracy.

[0041] Both sides of the support column 6 are equipped with pressure rods 4 via movable shafts 14. The top of each pressure rod 4 is equipped with a tension wheel 5 via a U-shaped frame 23. The support column 6 and the pressure rods 4 are connected by a hydraulic telescopic damping rod 13 via movable shafts 14.

[0042] The hydraulic telescopic damping rod 13 includes a piston cylinder 24 and a telescopic rod 27 extending into the piston cylinder 24 at one end. A coil 25 is evenly wound around the outside of the piston cylinder 24, and a protective cover 26 is provided on the outside of the coil 25.

[0043] The support column 6 is the main load-bearing component of this device and is made of high-strength steel to ensure sufficient load-bearing capacity and stability. Mounting holes are provided on both sides of the support column 6 for mounting the pressure rod 4 via the movable shaft 14.

[0044] Both ends of the pressure rod 4 are connected to the support column 6 via movable shafts 14, allowing the pressure rod 4 to rotate around the movable shafts 14. The pressure rod 4 is made of high-strength aluminum alloy, which is lightweight and has good corrosion resistance. A tensioning wheel 5 is mounted on the top of each pressure rod 4 via a U-shaped frame 23.

[0045] The tensioning pulley 5 is fixed to the top of the pressure rod 4 by the U-shaped bracket 23, and is used to tension and guide the drive belt or other transmission components. The outer surface of the tensioning pulley 5 is provided with anti-slip grooves to increase the friction with the drive belt and ensure the stability of the transmission process.

[0046] The movable shaft 14 is used to connect the support column 6 and the pressure rod 4, allowing the pressure rod 4 to rotate relative to the support column 6. The movable shaft 14 is made of high-strength stainless steel, which has good wear resistance and corrosion resistance.

[0047] The hydraulic telescopic damping rod 13 is a key component of this invention, used to adjust and stabilize the position of the pressure rod 4. The hydraulic telescopic damping rod 13 includes a piston cylinder 24 and a telescopic rod 27.

[0048] The piston cylinder 24 is made of high-strength aluminum alloy and has an internal sealed cavity for holding hydraulic oil. A coil 25 is evenly wound around the outside of the piston cylinder 24. The coil 25 is used to sense the extension and retraction position of the piston cylinder 24 and transmit the signal to the control system to achieve precise control of the hydraulic extension damping rod 13.

[0049] One end of the telescopic rod 27 extends into the piston cylinder 24, and the other end is connected to the pressure rod 4. The telescopic rod 27 is made of high-strength stainless steel and has a special surface treatment, giving it good wear resistance and corrosion resistance.

[0050] The coil 25 is wound around the outside of the piston cylinder 24 to sense the extension and retraction position of the piston cylinder 24. The coil 25 is wound with high-precision copper wire, which has good conductivity and stability.

[0051] A protective cover 26 is disposed on the outside of the coil 25 to protect the coil 25 from interference and damage from the external environment. The protective cover 26 is made of high-strength plastic material, which has good weather resistance and impact resistance.

[0052] Both the support wheel 10 and the tension wheel 5 have annular grooves on their circumferential sidewalls that are adapted to the cable, and the inner wall of the annular grooves is fitted with an ultra-high molecular weight polyethylene wear-resistant layer. The wear-resistant layer is fixedly connected to the wheel body of the support wheel and the tension wheel through a hot pressing process.

[0053] One end of the support wheel 10 and the tension wheel 5 is equipped with a miniature permanent magnet generator 28 via a coupling. Each miniature permanent magnet generator 28 is electrically connected to the storage battery 16 via a wire.

[0054] A rectifier and voltage regulator module is connected in series on the wire between the micro permanent magnet generator 28 and the battery 16, and the outside of the wire is wrapped with an anti-salt spray shielding layer.

[0055] Both the support wheel 10 and the tension wheel 5 have annular grooves 11 and 51 on their circumferential sidewalls, which are adapted to the cable. The inner walls of the annular grooves 11 and 51 are fitted with ultra-high molecular weight polyethylene wear-resistant layers 12 and 52. These wear-resistant layers 12 and 52 are fixedly connected to the wheel bodies of the support wheel 10 and the tension wheel 5 through a hot-pressing process, ensuring that they are not easily detached during long-term use and effectively reducing friction between the cable and the wheel body, thus extending their service life.

[0056] Both the support wheel 10 and the tension wheel 5 have a miniature permanent magnet generator 28 mounted on one end via a coupling. Specifically, one end of the coupling is connected to the shaft of the support wheel 10 or the tension wheel 5, and the other end is connected to the rotor shaft of the miniature permanent magnet generator 28, thereby realizing power transmission. Each miniature permanent magnet generator 28 is electrically connected to the battery 16 via a wire.

[0057] A rectifier and voltage regulator module 17 is connected in series on the wires between the miniature permanent magnet generator 28 and the battery 16. The function of the rectifier and voltage regulator module 17 is to convert the alternating current generated by the miniature permanent magnet generator 28 into stable direct current for storage in the battery 16. In addition, the wires are wrapped with an anti-salt spray shielding layer 18 to prevent corrosion of the wires when used in marine or high-salt environments, ensuring the reliability and safety of the system.

[0058] In this embodiment, the entire buffer mechanism is first bolted to a predetermined position on the deck of the cable-laying vessel using the mounting base 1 at the bottom of the support column 6 and its fixing holes, ensuring that the mounting base 1 fits tightly against the deck without loosening. Then, the sealing door 2 on the side wall of the support column 6 is opened to check whether the battery 16 inside the cavity 15 has sufficient power and whether the wiring of the controller 3 is secure. After confirming everything is correct, the sealing door 2 is closed to ensure that the cavity 15 is waterproof and dustproof. Simultaneously, the stabilizing sleeves 17 at the four corners of the support plate 7 and the guide rods 8 at the bottom of the top plate 9 are checked for smooth operation, ensuring that the guide rods 8 can slide vertically within the stabilizing sleeves 17 without any jamming.

[0059] The controller 3 starts the miniature inflation / deflation pump 18 on one side of the support column 6. The miniature inflation / deflation pump 18 inflates the nitrile rubber airbag 19 through the flexible conduit 21. The air pressure sensor 20 inside the nitrile rubber airbag 19 transmits the air pressure data to the controller 3 in real time. When the air pressure reaches the preset initial value, the controller 3 controls the miniature inflation / deflation pump 18 to stop inflating and closes the solenoid valve 22 on the flexible conduit 21, completing the initial air pressure setting of the nitrile rubber airbag 19. At the same time, the hydraulic telescopic damping rod 13 between the support column 6 and the pressure rod 4 is adjusted. The controller 3 supplies initial current to the coil 25 outside the piston cylinder 24, so that the telescopic rod 27 is in the neutral position, ensuring that the tension wheel 5 at the top of the pressure rod 4 is at the preset initial height, preparing for cable erection.

[0060] The cable to be laid is sequentially wound around the annular groove of the top support wheel 10 of the top plate 9 and the annular groove of the tension wheel 5 at the top of the pressure rod 4. The ultra-high molecular weight polyethylene wear-resistant layer on the inner wall of the annular groove of the support wheel 10 and the tension wheel 5 reduces the friction loss between the cable and the wheel. Then, the cable is slowly pulled by the winch of the cable laying boat. At the same time, the controller 3 controls the change of the current in the coil 25 of the hydraulic telescopic damping rod 13, adjusts the extension and retraction of the telescopic rod 27, and drives the pressure rod 4 to rotate around the movable shaft 14, so that the tension wheel 5 applies an initial tension force to the cable until the cable is in a slightly tensioned state, and the erection is completed.

[0061] After the cable laying operation begins, the winch continuously raises and lowers the cable. When the ship experiences slight tension fluctuations in the cable due to the turbulence of the waves or the seabed topography, the controller 3 receives tension-related feedback signals and adjusts the current of the coil 25 in real time to change the viscosity of the magnetorheological fluid in the piston cylinder 24. This, in turn, adjusts the damping force of the hydraulic telescopic damping rod 13 to quickly counteract the slight tension fluctuations and prevent sudden changes in cable tension.

[0062] When the cable encounters a large tensile impact, the tension causes the top plate 9 to compress the two nickel-titanium alloy springs 12 between the support plate 7 and the top plate 9. The nickel-titanium alloy springs 12 initially absorb the impact energy through elastic deformation. At the same time, the top plate 9 compresses the nitrile rubber airbag 19, causing the air pressure inside the airbag to increase. The air pressure sensor 20 transmits the over-threshold air pressure signal to the controller 3. The controller 3 immediately controls the solenoid valve 22 to open, and the nitrile rubber airbag 19 slowly deflates through the soft conduit 21, which, together with the nickel-titanium alloy springs 12, achieves secondary buffering to prevent the cable from breaking due to overload. If the cable tension decreases after the impact, the controller 3 starts the micro inflation / deflation pump 18 to replenish the nitrile rubber airbag 19 with air to restore its buffering capacity.

[0063] During this process, the cable pulls the support wheel 10 and tension wheel 5 to rotate continuously. The two drive the miniature permanent magnet generator 28 at one end to operate through the coupling. The AC power generated by the miniature permanent magnet generator 28 is converted into DC power by the rectifier and voltage regulator module on the wire, and then transmitted to the battery 16 in the cavity 15 for storage through the wire wrapped with an anti-salt spray shielding layer, realizing energy recovery and powering the controller 3, miniature charge and discharge pump 18 and other equipment.

[0064] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0065] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0066] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0067] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cable tension buffering mechanism during the cable laying process of a cable-laying vessel, comprising a support column (6), characterized in that: The support column (6) has a cavity (15) for placing a storage battery (16) inside. The support column (6) has a support plate (7) on top and a top plate (9) above the support plate (7). The top of the top plate (9) has two support wheels (10) arranged in parallel by a support rod (11). Two nickel-titanium alloy springs (12) are installed in parallel between the support plate (7) and the top plate (9). A nitrile rubber airbag (19) is arranged between the support plate (7) and the top plate (9) between the two nickel-titanium alloy springs (12). Both sides of the support column (6) are equipped with pressure rods (4) via movable shafts (14). The top of each pressure rod (4) is equipped with a tension wheel (5) via a U-shaped frame (23). A hydraulic telescopic damping rod (13) is connected between the support column (6) and the pressure rods (4) via movable shafts (14). One end of each of the support wheel (10) and tension wheel (5) is equipped with a miniature permanent magnet generator (28) via a coupling. Each miniature permanent magnet generator (28) is electrically connected to the battery (16) via a wire.

2. The cable tension buffering mechanism during the cable laying process of a cable-laying vessel according to claim 1, characterized in that: A miniature inflation / deflation pump (18) is provided on one side of the support column (6). The miniature inflation / deflation pump (18) is connected to the nitrile rubber airbag (19) through a soft conduit (21). A pressure sensor (20) is provided inside the nitrile rubber airbag (19). A solenoid valve (22) is provided on the soft conduit (21).

3. The cable tension buffering mechanism during the cable laying process of a cable-laying vessel according to claim 1, characterized in that: Stabilizing sleeves (17) are provided at the four corners of the pallet (7), and guide rods (8) extending into the stabilizing sleeves (17) are provided at the four corners of the bottom of the top plate (9).

4. The cable tension buffering mechanism during the cable laying process of a cable-laying vessel according to claim 1, characterized in that: The hydraulic telescopic damping rod (13) includes a piston cylinder (24) and a telescopic rod (27) extending into the piston cylinder (24) at one end. A coil (25) is evenly wound around the outside of the piston cylinder (24), and a protective cover (26) is provided on the outside of the coil (25).

5. The cable tension buffering mechanism during the cable laying process of a cable-laying vessel according to claim 1, characterized in that: The top of the cavity (15) is equipped with a controller (3), the side wall of the support column (6) at the opening of the cavity (15) is hinged with a sealing door (2), and the bottom of the support column (6) is equipped with an installation base (1) with fixing holes.

6. The cable tension buffering mechanism during the cable laying process of a cable-laying vessel according to claim 1, characterized in that: The circumferential sidewalls of the support wheel (10) and the tension wheel (5) are provided with annular grooves adapted to the cable, and the inner wall of the annular groove is fitted with an ultra-high molecular weight polyethylene wear-resistant layer. The wear-resistant layer is fixedly connected to the wheel body of the support wheel and the tension wheel through a hot pressing process.

7. A cable tension buffering mechanism during the cable laying process of a cable-laying vessel according to claim 1, characterized in that: A rectifier and voltage regulator module is connected in series on the wire between the micro permanent magnet generator (28) and the battery (16), and the outside of the wire is wrapped with an anti-salt spray shielding layer.

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