Offshore wind power single pile foundation protection device

Abstract

The application relates to the technical field of offshore wind power, in particular to a kind of offshore wind power single-pile foundation protection device, applied to firm main pile foundation, protection device includes vice pile foundation, tractor, tension detector and steel cable, vice pile foundation is longitudinally arranged on seabed, the top of vice pile foundation is provided with connecting port, tractor and tension detector are circumferentially distributed on the outside of main pile foundation, tractor has work roller that can rotate to carry out take-up and pay-off, one end of tension detector is connected with main pile foundation, steel cable passes through connecting port, two ends of steel cable are connected with work roller of tractor and other end of tension detector respectively, the application provides additional support force by evenly distributing vice pile foundation around main pile foundation, effectively improves the compression resistance and stability of wind power foundation. This distributed support system can more evenly withstand various forces from the marine environment, reducing the risk of single-point stress.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of offshore wind power, in particular to a kind of offshore wind power single pile foundation protection device. BACKGROUND

[0002] Offshore wind power single pile foundation has been widely used in the construction of China's offshore wind farm at present due to its characteristics of factory integration, low cost, convenient construction, no seabed preparation and easy installation. According to the statistical data of China's main offshore wind farm, the application proportion of single pile foundation has reached 46%. With the continuous development of offshore wind power construction, especially the rise of nearshore wind farm, the use proportion of single pile foundation gradually increases.

[0003] However, with the diversification of wind turbine tower foundation types in the field of offshore wind power and other related fields, the installation conditions have become more complex. Different types of seabed, seabed in different sea areas and different use environments have different requirements for the foundation. Under such background, in order to further improve the stability of the foundation, various factors must be considered in the design and construction process. However, the outer wall of most single pile foundations is still smooth, which makes the adhesion of the foundation insufficient, and the uplift capacity is also limited, thereby increasing the risk of foundation side leaning

[0004] Chinese patent CN118087594B discloses a kind of wind power foundation stabilizing device, including auxiliary pile, buoyancy mechanism, tension cable, when sea level rises, upper pull section guides lower pull section to exert downward force on wind power foundation,

[0005] The stabilizing device inserts auxiliary pile in the circumferential seabed of the foundation, and makes the tension cable cross over the top end of the auxiliary pile and connect with the wind power foundation and the buoyancy mechanism at both ends, so that when the sea wave is large, the buoyancy mechanism can pull the tension cable under the action of the sea wave, and through the guidance of the auxiliary pile, i.e. the upper pull section guides the lower pull section to exert downward force on the wind power foundation, thereby improving the anti-pulling stability of the wind power foundation when the sea wave is large. However, relying only on the sea wave to passively stabilize the wind power foundation has poor reliability and cannot actively stabilize to adapt to different environments. Although this passive stabilization method can maintain the stability of the foundation to some extent, it often performs unsatisfactorily in the face of complex and variable marine environment. For example, the intensity and frequency of sea waves will fluctuate significantly due to climate change, which means that the support provided by passive stabilization may not be sufficient at critical moments. SUMMARY

[0006] The offshore wind power single pile foundation protection device provided by the present application can exert downward force on any position of the main pile foundation by starting the traction device, thereby actively adjusting the main pile foundation and solving the problem that the existing stabilizing device cannot actively and stably adjust the main pile foundation.

[0007] To solve the problem in the prior art, the present application provides an offshore wind power single pile foundation protection device applied to a stable main pile foundation, which comprises a secondary pile foundation, a traction device, a tension detector and a steel cable.

[0008] Preferably, the connecting port of the secondary pile foundation is provided with a roller, the roller has a connecting shaft coaxial with the roller, the two ends of the connecting shaft pass through the connecting port and are rotationally connected to the top end of the secondary pile foundation, the connecting shaft extends in the transverse direction, the circumferential surface of the roller is provided with a ring groove coaxial with the roller, the steel cable is connected to the traction device and the tension detector after being straddled on the ring groove of the roller, and the roller rotates in the connecting port when the steel cable passes through the connecting port.

[0009] Preferably, the circumferential surface of the secondary pile foundation is further provided with a pull-out prevention rod arranged in the length direction thereof, the pull-out prevention rod extends in an upwardly inclined direction, the secondary pile foundation is provided with a driving rod in transmission connection with the pull-out prevention rod, the driving rod is used to drive the pull-out prevention rod to deviate from the circumferential surface of the secondary pile foundation after being inserted into the seabed, the top end of the driving rod is provided with a connecting head, and the connecting port is arranged on the connecting head.

[0010] Preferably, the driving rod is coaxially and slidingly arranged in the secondary pile foundation, the inner end of the pull-out prevention rod is rotationally connected to the circumferential surface of the driving rod, the pull-out prevention rod is further provided with a connecting groove extending in the length direction thereof, the circumferential surface of the secondary pile foundation is further provided with a slot extending in the longitudinal direction, the slot is provided with a pivot extending in the transverse direction, the pivot passes through the connecting slot and slidingly matches the connecting slot, and the pull-out prevention rod is deflected outside the secondary pile foundation when the driving rod moves upward relative to the secondary pile foundation.

[0011] Preferably, the bottom end of the secondary pile foundation is provided with a plug, the diameter of the plug gradually decreases from top to bottom, and the secondary pile foundation is inserted into the seabed in the longitudinal direction through the plug.

[0012] Preferably, the protection device further comprises a connecting seat arranged on the circumferential surface of the main pile foundation in a circumferential distribution, the connecting seat is arranged on the circumferential surface of the main pile foundation in a longitudinal sliding manner, the bottom end of the connecting seat is provided with an elastic element connected with the main pile foundation, and the connecting seat needs to overcome the elastic force of the elastic element when moving downward. One end of the tension detector is connected with the connecting seat.

[0013] Preferably, the protection device further comprises a support mechanism, the support mechanism comprises an upper fixing sleeve and a lower fixing sleeve coaxially arranged on the main pile foundation, and a connecting column arranged between the upper fixing sleeve and the lower fixing sleeve in a longitudinal direction, the connecting seat is arranged between the upper fixing sleeve and the lower fixing sleeve in a longitudinal sliding manner, the connecting column penetrates the connecting seat in a longitudinal sliding manner, and the elastic element is arranged between the connecting seat and the lower fixing sleeve.

[0014] Preferably, the upper fixing sleeve and the lower fixing sleeve have the same structure, the lower fixing sleeve comprises fixing seats connected in a circumferential distribution of the main pile foundation, the inner diameter of the lower fixing sleeve gradually increases from top to bottom, and a clamping block is arranged between the inner circumferential surface of the lower fixing sleeve and the circumferential surface of the main pile foundation. The clamping block is abutted on the circumferential surface of the main pile foundation in a radial direction of the main pile foundation under the action of the inner side of the lower fixing sleeve.

[0015] Preferably, the protection device further comprises a fixed platform coaxially arranged on the main pile foundation, and the puller is arranged on the fixed platform in a circumferential distribution.

[0016] Preferably, the fixed platform comprises support platforms arranged in a circumferential distribution of the main pile foundation, the inner diameter of the fixed platform gradually increases from top to bottom, and a clamping seat is arranged between the inner side of the fixed platform and the circumferential surface of the columnar foundation. The clamping seat is abutted on the circumferential surface of the main pile foundation in a radial direction of the main pile foundation under the action of the inner side of the fixed platform.

[0017] The beneficial effects of the present application compared with the prior art are:

[0018] Enhanced structural stability: The auxiliary pile foundations are evenly distributed around the main pile foundation, providing additional support force, effectively improving the compression resistance and stability of the wind power foundation. This distributed support system can more evenly withstand various forces from the marine environment, reducing the risk of single-point stress.

[0019] Active adjustment and adaptation to environmental changes: The cooperation of the puller and the tension detector enables the system to monitor and adjust the tension of the steel cable in real time. When the tension of the steel cable is detected to exceed the safety value, the puller will automatically adjust the working roller to release the relative position of the steel cable, thereby preventing structural damage. This active adjustment mechanism enables the wind power foundation to better adapt to environmental changes such as wind and waves, tides, etc., and maintain stable operation.

[0020] Improve safety and reliability: By monitoring and adjusting the cable tension in real time, the protection device effectively reduces the potential safety hazards caused by environmental factors. The intelligent monitoring system can detect problems in time and take measures, greatly improving the overall safety and reliability of the wind power facilities. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view of a single-pile foundation protection device for offshore wind power.

[0022] Figure 2 It is a front view of a single-pile foundation protection device for offshore wind power.

[0023] Figure 3 It is a sectional view of a single-pile foundation protection device for offshore wind power.

[0024] Figure 4 It is Figure 3 A partial enlarged view of place A of

[0025] Figure 5 It is Figure 3 A partial enlarged view of place B of

[0026] Figure 6 It is Figure 3 A partial enlarged view of place C of

[0027] Figure 7 It is a perspective view of a support mechanism in a single-pile foundation protection device for offshore wind power.

[0028] Figure 8 It is a partial exploded view of a support mechanism in a single-pile foundation protection device for offshore wind power.

[0029] Figure 9 It is a perspective view of a fixed platform in a single-pile foundation protection device for offshore wind power.

[0030] Figure 10 It is a partial exploded view of a fixed platform in a single-pile foundation protection device for offshore wind power.

[0031] In the figure, the labels are: 1, main pile foundation; 2, auxiliary pile foundation; 21, roller; 22, connecting shaft; 23, anti-pulling rod; 24, driving rod; 241, connecting head; 25, slot; 251, pivot; 26, plug; 3, tractor; 4, tension detector; 5, cable; 61, connecting seat; 62, elastic element; 631, upper fixed sleeve; 632, lower fixed sleeve; 633, connecting column; 634, clamping block; 64, fixed platform; 641, clamping seat. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means and specific purposes and functions achieved by the present application, the present application will be described in further detail below in conjunction with the drawings and specific embodiments.

[0033] As Figure 1 , Figure 2 and Figure 3 indicated, the present application provides:

[0034] A offshore wind power single pile foundation protection device applied to a stable main pile foundation 1, the protection device comprising a vice pile foundation 2, a tractor 3, a tension detector 4 and a steel cable 5, the vice pile foundation 2 is longitudinally arranged on the seabed, the vice pile foundation 2 is distributed on the circumferential side of the main pile foundation 1 along the circumference of the main pile foundation 1, the top end of the vice pile foundation 2 is provided with a connecting port, the tractor 3 and the tension detector 4 are circumferentially distributed on the outer side of the main pile foundation 1, the tractor 3 and the tension detector 4 are longitudinally distributed, the tractor 3 has a working roller capable of rotating to wind and unwind, one end of the tension detector 4 is connected with the main pile foundation 1, the steel cable 5 passes through the connecting port, two ends of the steel cable 5 are respectively connected with the working roller of the tractor 3 and the other end of the tension detector 4, the tension detector 4 is used for detecting the tension of the steel cable 5 in the taut state, when the tension of the steel cable 5 is greater than the tension of the steel cable 5 at the relative position, the tractor 3 guides the working roller to release the steel cable 5 at the relative position.

[0035] A offshore wind power single pile foundation protection device aims to effectively stabilize the main pile foundation 1 to cope with the variable marine environment and external forces. This protection device is composed of a vice pile foundation 2, a tractor 3, a tension detector 4 and a steel cable 5. The vice pile foundation 2 is longitudinally arranged on the seabed, forming a stable support network, evenly distributed on the circumferential side of the main pile foundation 1, to enhance the compressive capacity and stability of the entire structure.

[0036] The top end of the vice pile foundation 2 is provided with a connecting port for convenient connection with the steel cable 5 system. The tractor 3 and the tension detector 4 are circumferentially distributed on the outer side of the main pile foundation 1 and arranged longitudinally to ensure that the entire system can quickly respond to environmental changes. The working roller of the tractor 3 not only has a rotating function, but also can flexibly wind and unwind the steel cable 5 to adjust its tension. The tension detector 4 monitors the tension state of the steel cable 5 in real time to ensure accurate feedback of the stress condition of the system at any time.

[0037] When the tension detector 4 detects that the tension of the steel cable 5 exceeds the preset safety value, the tractor 3 will quickly respond to adjust the working roller to release the steel cable 5 at the relative position, thereby preventing structural damage caused by excessive tension. This automatic adjustment mechanism greatly improves the adaptive ability of the wind power foundation, enabling it to maintain a stable operating state under the influence of wind, waves, tides and other environmental factors.

[0038] In addition, the design of the protection device also takes into account the long-term durability and maintenance convenience. High-strength and corrosion-resistant materials are selected to ensure good anti-aging performance in marine environments and extend the service life. At the same time, the intelligent monitoring system of the tension detector 4 can be connected to the remote monitoring center through a wireless network to realize real-time transmission and analysis of data, timely detection of potential problems, and preventive maintenance.

[0039] As shown in Figure 4 The connecting port of the auxiliary pile foundation 2 is provided with a roller 21, the roller 21 has a connecting shaft 22 coaxial with it, the two ends of the connecting shaft 22 pass through the connecting port and are rotatably connected with the top end of the auxiliary pile foundation 2, the connecting shaft 22 extends in the transverse direction, the circumferential surface of the roller 21 is provided with a ring groove coaxial with it, the steel cable 5 is connected with the puller 3 and the tension detector 4 after crossing the ring groove of the roller 21, and the roller 21 rotates in the connecting port when the steel cable 5 passes through the connecting port.

[0040] The connecting port of the auxiliary pile foundation 2 is provided with a roller 21 to enhance the stability and flexibility of the steel cable 5. The roller 21 is supported by a connecting shaft 22 coaxial with it, and the two ends of the connecting shaft 22 pass through the connecting port and are rotatably connected with the top end of the auxiliary pile foundation 2. The connecting shaft 22 extends in the transverse direction to ensure smooth rotation of the roller 21 along its axis.

[0041] The circumferential surface of the roller 21 is provided with a ring groove coaxial with it, and these ring grooves are used to accommodate the steel cable 5. The steel cable 5 is connected with the puller 3 and the tension detector 4 after crossing the ring groove of the roller 21, and forms stable contact through the circumferential surface of the roller 21. When the steel cable 5 passes through the connecting port, the rotation of the roller 21 allows the steel cable 5 to pass smoothly through the connecting port, thereby avoiding wear or jam caused by friction or uneven force on the steel cable 5.

[0042] This design provides several important advantages:

[0043] Reducing friction and wear: the arrangement of the roller 21 effectively reduces the friction of the steel cable 5 at the connecting port, allowing the steel cable 5 to pass smoothly through the connecting port, reducing the risk of wear and failure, thereby improving the durability and long-term stability of the system.

[0044] Improving the flexibility and adaptability of the steel cable 5: the rotation of the roller 21 allows the steel cable 5 to adjust its position and tension flexibly when subjected to external forces or environmental changes. This can reduce stress concentration caused by uneven tension of the steel cable 5, improving the adaptability and stability of the overall system.

[0045] Simplified installation and maintenance: The design of the rollers 21 makes the installation and adjustment of the steel cable 5 more convenient. Since the rollers 21 can rotate and provide smooth guidance for the steel cable 5, the installer can more easily place the steel cable 5 correctly in the ring groove, reducing the complexity of the installation process. At the same time, the design of the rollers 21 also facilitates subsequent maintenance and adjustment work.

[0046] Enhanced stability of the connection: The cooperation of the rollers 21 and the connecting shaft 22 makes the steel cable 5 maintain a stable stress state at the connection port, preventing structural instability caused by uneven stress on the steel cable 5 or deformation of the connection port. This helps to ensure that the wind power foundation maintains reliable connectivity and stability during operation.

[0047] Improved efficiency of the system: The smooth rotation of the rollers 21 reduces the resistance of the steel cable 5 during operation, allowing the tractor 3 and the tension detector 4 to work more efficiently, optimizing the overall efficiency of the system.

[0048] As shown in Figure 4 The circumferential surface of the secondary pile foundation 2 is also provided with anti-pulling rods 23 arranged along the length direction. The anti-pulling rods 23 extend in an upwardly inclined direction. Inside the secondary pile foundation 2, a drive rod 24 is provided in transmission connection with the anti-pulling rods 23. The drive rod 24 is used to drive the anti-pulling rods 23 to deviate from the circumferential surface of the secondary pile foundation 2 after being inserted into the seabed. The top end of the drive rod 24 is provided with a connecting head 241, and a connecting port is arranged on the connecting head 241.

[0049] The circumferential surface of the secondary pile foundation 2 is also provided with anti-pulling rods 23 arranged along the length direction. The anti-pulling rods 23 extend in an upwardly inclined direction. The main function of the anti-pulling rods 23 is to prevent the secondary pile foundation 2 from being pulled out or displaced in the seabed, thereby enhancing the overall stability and anti-pulling force of the wind power foundation. Inside the secondary pile foundation 2, a drive rod 24 is provided in transmission connection with the anti-pulling rods 23. The drive rod 24 is used to control the action of the anti-pulling rods 23, and when the anti-pulling rods 23 are inserted into the seabed, the drive rod 24 can guide the anti-pulling rods 23 to deviate from the circumferential surface of the secondary pile foundation 2, thereby forming a more secure anti-pulling mechanism around the secondary pile foundation 2. The top end of the drive rod 24 is equipped with connecting heads 241, which are used to connect with other system components to ensure that the drive rod 24 can accurately transmit motion and force. A connecting port is arranged on the connecting head 241. Through this design, the connecting head 241 can efficiently dock with the drive system, allowing the anti-pulling rods 23 to be accurately adjusted and positioned after being inserted into the seabed.

[0050] This design provides the following significant advantages: first, the inclined arrangement of the anti-pulling rod 23 and the adjustment mechanism of the driving rod 24 enable the anti-pulling rod 23 to resist pulling force at an optimal angle after being inserted into the seabed, improving the anti-pulling effect and enhancing the stability of the secondary pile foundation 2. Second, precise control of the position and angle of the anti-pulling rod 23 by the driving rod 24 allows the anti-pulling rod 23 to be adjusted according to actual needs, adapting to different seabed conditions and external environmental changes. This adjustability not only improves the adaptability of the system but also maintains high anti-pulling performance under different geological conditions. Finally, the connection head 241 and the connection port simplify the connection of the driving rod 24 with the system, ensuring smoothness and reliability during the driving process, reducing the complexity and frequency of system maintenance. These improvements help to enhance the efficiency and durability of the overall system, thereby enhancing the safety and long-term operation capability of the wind power foundation.

[0051] As shown in Figure 4 , the driving rod 24 is coaxially and slidingly arranged in the secondary pile foundation 2, and the inner end of the anti-pulling rod 23 is rotationally connected with the circumferential surface of the driving rod 24. The anti-pulling rod 23 is further provided with a connection slot extending along its length direction, and the circumferential surface of the secondary pile foundation 2 is further provided with a slot 25 extending in the longitudinal direction. The slot 25 is provided with a transversely extending pivot 251, and the pivot 251 passes through the connection slot 25 and slidingly cooperates with it. When the driving rod 24 moves upward relative to the secondary pile foundation 2, the anti-pulling rod 23 deflects outward of the secondary pile foundation 2.

[0052] The driving rod 24 is coaxially and slidingly arranged in the secondary pile foundation 2, and the inner end of the anti-pulling rod 23 is rotationally connected with the circumferential surface of the driving rod 24, forming a stable driving system. The anti-pulling rod 23 is further provided with a connection slot extending along its length direction, and these connection slots cooperate with the slot 25 on the circumferential surface of the secondary pile foundation 2. The slot 25 extends in the longitudinal direction of the secondary pile foundation 2, and the slot 25 is provided with a transversely extending pivot 251, which passes through the connection slot 25 and slidingly cooperates with it, so that the anti-pulling rod 23 can be effectively adjusted and operated after being inserted into the seabed.

[0053] When the driving rod 24 moves upward relative to the secondary pile foundation 2, the anti-pulling rod 23 deflects outward of the secondary pile foundation 2 through the rotational connection with the driving rod 24. The inclined arrangement of the anti-pulling rod 23 and the connection slot allows the anti-pulling rod 23 to deviate from the circumferential surface of the secondary pile foundation 2 in a predetermined direction under the push of the driving rod 24. This deflection action helps the anti-pulling rod 23 to form an effective anti-pulling force after being inserted into the seabed, improving the stability of the foundation in the seabed and preventing the secondary pile foundation 2 from being pulled out or displaced when subjected to external forces.

[0054] This design provides several important advantages. First, the cooperation between the driving rod 24 and the anti-pulling rod 23 ensures that the anti-pulling rod 23 can be precisely deflected when needed, improving the adaptability and stability of the system under different seabed conditions. Second, the sliding fitting mechanism of the connecting groove and the notch 25 simplifies the adjustment process of the anti-pulling rod 23, making it easier for the anti-pulling rod 23 to adjust its deflection angle, optimizing the anti-pulling effect. Finally, through the setting of the pivot 251, the up and down movement of the driving rod 24 can directly affect the deflection of the anti-pulling rod 23, enhancing the control accuracy of the system and improving the overall operation reliability and long-term durability of the system. These improvements make the secondary pile foundation 2 have higher stability and safety in complex marine environments, effectively supporting the long-term operation of wind power facilities.

[0055] As shown in Figure 3 The bottom end of the secondary pile foundation 2 is provided with a plug 26, and the diameter of the plug 26 gradually decreases from top to bottom. The secondary pile foundation 2 is inserted into the seabed along the longitudinal direction through the plug 26.

[0056] The bottom end of the secondary pile foundation 2 is provided with a plug 26, and the diameter of the plug 26 gradually decreases from top to bottom. This gradually tapered design allows the plug 26 to be smoothly and efficiently inserted into the seabed along the longitudinal direction, forming a stable anchoring effect. The gradually tapered structure of the plug 26 not only reduces the resistance during insertion, but also effectively reduces the friction with the seabed soil, ensuring that the plug 26 can smoothly penetrate various soil layers when entering the seabed to reach the desired depth and position.

[0057] In the design of the plug 26, the larger diameter part at the top provides stability and support during initial insertion, helping the secondary pile foundation 2 to remain stable during the initial stage of insertion. As the plug 26 gradually tapers, it can gradually enter the seabed soil, reducing friction and resistance during insertion, so that the plug 26 can more smoothly penetrate various soil layers when entering the seabed to reach the desired depth and position.

[0058] This design of the plug 26 also allows the secondary pile foundation 2 to obtain better anchoring force and stability in the seabed. The gradually tapered structure of the plug 26 not only allows the plug 26 to more closely fit the seabed soil, but also gradually expands the contact area during insertion, thereby enhancing the friction and support force between the plug 26 and the seabed. This enhanced anchoring force can effectively resist external forces and prevent the secondary pile foundation 2 from shifting or being pulled out in the seabed, ensuring the stability and safety of the wind power facility in harsh marine environments.

[0059] In summary, the design of the plug 26 at the bottom end of the secondary pile foundation 2, with its gradually tapered diameter structure, allows the plug 26 to be inserted into the seabed more efficiently and stably, while providing excellent anchoring performance. This design not only improves the installation efficiency of the secondary pile foundation 2, but also enhances its stability and reliability during long-term operation, providing a solid support for wind power infrastructure.

[0060] As shown in Figure 5 , Figure 7 and Figure 8 , the protection device further includes a plurality of connecting seats 61 distributed along the circumference of the main pile foundation 1. These connecting seats 61 are longitudinally slidingly arranged on the circumference of the main pile foundation 1. The bottom end of each connecting seat 61 is equipped with an elastic element 62 connected to the main pile foundation 1. The elastic element 62 is designed to provide a buffer effect when the connecting seat 61 moves downward, in response to the tension applied by the steel cable 5.

[0061] The protection device further includes a plurality of connecting seats 61 distributed along the circumference of the main pile foundation 1. These connecting seats 61 are longitudinally slidingly arranged on the circumference of the main pile foundation 1. The bottom end of each connecting seat 61 is equipped with an elastic element 62 connected to the main pile foundation 1. The elastic element 62 is designed to provide a buffer effect when the connecting seat 61 moves downward, in response to the tension applied by the steel cable 5.

[0062] The elastic element 62, such as a spring or other elastic material, can buffer and disperse the tension when the connecting seat 61 is subjected to tension. The tension of the steel cable 5 is transmitted to the elastic element 62 through the connecting seat 61. When subjected to tension, the elastic element 62 will compress or stretch, absorbing part of the force, thereby reducing the direct impact on the main pile foundation 1. This buffering mechanism effectively reduces the direct impact of tension on the connecting seat 61 and the main pile foundation 1, reducing the damage to the structure caused by possible impact and vibration.

[0063] When the tension applied by the steel cable 5 increases, the elastic force of the elastic element 62 will also increase accordingly. The downward movement of the connecting seat 61 needs to overcome the elastic force of the elastic element 62, thereby providing a smooth response when the tension changes. The elastic force of the elastic element 62 can be adjusted according to actual needs to ensure that the connecting seat 61 always maintains appropriate position and stability under various load conditions.

[0064] To further improve the performance of the system, one end of the tension detector 4 is connected to the connecting seat 61 for real-time monitoring of the tension changes on the connecting seat 61. The tension detector 4 can provide accurate data to help operators understand the working status of the elastic element 62 and the load condition of the system. By analyzing these data, operators can timely adjust the elastic force of the elastic element 62 to ensure the effectiveness and reliability of the protection device under various load conditions.

[0065] The advantages of this design include: first, the buffering function of the elastic element 62 effectively absorbs and disperses the tension applied by the steel cable 5, reducing the direct impact on the main pile foundation 1 and lowering the risk of structural damage. Second, the elastic force of the elastic element 62 can be adjusted as needed, providing flexible support to adapt to different load conditions. Finally, the real-time monitoring function of the tension detector 4 can help operators accurately understand the system status and timely adjust and maintain the protection device, ensuring its stability and reliability in complex environments. This design not only improves the overall performance of the protection device, but also enhances the adaptability and safety of the main pile foundation 1 in marine environments.

[0066] As shown in Figure 7 and Figure 8 , the protection device also includes a support mechanism, which includes an upper fixed sleeve 631 and a lower fixed sleeve 632 coaxially arranged on the main pile foundation 1, and a connecting column 633 longitudinally arranged between the two fixed sleeves. The connecting seat 61 is longitudinally slidingly arranged between the upper fixed sleeve 631 and the lower fixed sleeve 632, the connecting column 633 longitudinally slidingly penetrates the connecting seat 61, and the elastic element 62 is arranged between the connecting seat 61 and the lower fixed sleeve 632.

[0067] The protection device also includes a support mechanism composed of multiple important components to ensure its stability and flexibility. The support mechanism includes an upper fixed sleeve 631 and a lower fixed sleeve 632 coaxially arranged on the main pile foundation 1, and a connecting column 633 longitudinally arranged between the two fixed sleeves.

[0068] The upper fixed sleeve 631 and the lower fixed sleeve 632 together form the basic structure of the support mechanism, both of which are arranged on the circumferential surface of the main pile foundation 1 and fixed on the main pile foundation 1 in a coaxial manner, ensuring the concentricity and stability of the entire support structure. The design of the upper fixed sleeve 631 and the lower fixed sleeve 632 allows the support mechanism to be longitudinally adjusted on the main pile foundation 1, thereby adapting to different installation and maintenance requirements.

[0069] Between the upper fixed sleeve 631 and the lower fixed sleeve 632, a connecting column 633 is arranged. The connecting column 633 longitudinally slidingly penetrates the connecting seat 61 and slidingly cooperates with the connecting seat 61. This design allows the connecting seat 61 to move longitudinally on the connecting column 633, enabling the protection device to be adjusted in height as needed. The sliding function of the connecting column 633 allows the connecting seat 61 to freely adjust its position under different working conditions to provide optimal support and stability.

[0070] The elastic element 62 is arranged between the connecting seat 61 and the lower fixing sleeve 632. The role of the elastic element 62 is to provide the necessary elastic force to buffer the force during the movement and adjustment of the connecting seat 61. This elastic design can effectively absorb and disperse the impact force caused by the tension of the steel cable 5 or other external factors, thereby maintaining the stability and position of the connecting seat 61. The elastic element 62 usually includes springs or other similar elastic materials that will deform accordingly when subjected to tension or pressure, thereby providing cushioning and support.

[0071] Overall, the design of the support mechanism achieves stable adjustment and elastic support of the connecting seat 61 through the coaxial fixing sleeve and sliding connecting column 633. The upper fixing sleeve 631 and the lower fixing sleeve 632 provide a stable foundation, the connecting column 633 allows the connecting seat 61 to slide longitudinally, and the elastic element 62 provides cushioning and support between the connecting seat 61 and the lower fixing sleeve 632. This design not only improves the flexibility and adaptability of the protection device, but also ensures stability and reliability under various load conditions, providing solid support for the main pile foundation 1.

[0072] As shown in Figure 7 and Figure 8 , the upper fixing sleeve 631 and the lower fixing sleeve 632 have the same structure, and the lower fixing sleeve 632 includes a plurality of fixing seats distributed circumferentially along the main pile foundation. The inner diameter of the lower fixing sleeve 632 gradually increases from top to bottom, and the inner circumferential surface of the lower fixing sleeve 632 and the circumferential surface of the main pile foundation 1 are provided with a clamping block 634, which is abutted on the circumferential surface of the main pile foundation 1 along the radial direction of the main pile foundation 1 under the action of the inner side of the lower fixing sleeve 632.

[0073] The support mechanism of the protection device not only includes the upper fixing sleeve 631 and the lower fixing sleeve 632, but also includes the structural design details of the lower fixing sleeve 632. The upper fixing sleeve 631 and the lower fixing sleeve 632 have the same structure, which is to ensure the stable installation and adjustment of the protection device on the main pile foundation 1. Specifically, the design of the lower fixing sleeve 632 focuses on cooperation and fixation with the main pile foundation 1 to enhance the stability and durability of the entire system.

[0074] The structure of the lower fixing sleeve 632 includes a plurality of fixing seats uniformly distributed along the circumferential direction of the main pile foundation 1, which are integrally connected with the lower fixing sleeve 632 by connecting members or welding. This design ensures that the lower fixing sleeve 632 can uniformly distribute the stress on the main pile foundation 1, improving the stability and balance of the entire support mechanism. The distribution design of the fixing seat helps to evenly transmit the stress of the lower fixing sleeve 632 to the main pile foundation 1, reducing potential problems caused by local stress concentration.

[0075] In addition, the inner diameter of the lower fixing sleeve 632 is designed to gradually increase from top to bottom. This change in inner diameter is to enable the lower fixing sleeve 632 to better adapt to the circumferential surface of the main pile foundation 1, thereby achieving more accurate installation and adjustment. The gradually increasing inner diameter design allows the lower fixing sleeve 632 to form a tight fit with the main pile foundation 1, ensuring the stability of the fixing sleeve and effective support for the main pile foundation 1.

[0076] A plurality of clamping blocks 634 are arranged between the inner circumferential surface of the lower fixing sleeve 632 and the circumferential surface of the main pile foundation 1. The clamping blocks 634 are designed to contact the circumferential surface of the main pile foundation 1 in the radial direction of the main pile foundation 1 by contacting the inner side surface of the lower fixing sleeve 632. The clamping blocks 634 are designed to provide additional fixing force when the lower fixing sleeve 632 is installed, ensuring that the lower fixing sleeve 632 does not move or loosen due to external forces or vibrations. The force of the clamping blocks 634 can effectively fix the lower fixing sleeve 632 on the main pile foundation 1, increasing the overall stability and impact resistance of the system.

[0077] In the overall design, the clamping blocks 634 can adapt to the slight irregularities of the circumferential surface of the main pile foundation 1, further enhancing the firmness of the contact between the lower fixing sleeve 632 and the main pile foundation 1 through radial compression.

[0078] As shown in Figure 6 , Figure 9 and Figure 10 , the protection device further comprises a fixed platform 64 coaxially arranged on the main pile foundation 1, and the pullers 3 are distributed circumferentially on the fixed platform 64.

[0079] The protection device further comprises a fixed platform 64 coaxially arranged on the main pile foundation 1, which provides a solid foundation for the entire support mechanism. The design of the fixed platform 64 ensures stability on the main pile foundation 1 and can withstand loads from all directions. The fixed platform 64 is circumferentially distributed with a plurality of pullers 3, which are used to apply and adjust tension to adapt to different working conditions.

[0080] As shown in Figure 6 , Figure 9 and Figure 10 , the fixed platform 64 comprises a support platform circumferentially distributed on the main pile foundation 1, the inner diameter of the fixed platform 64 gradually increases from top to bottom, and the inner side of the fixed platform 64 is provided with a clamping seat 641 between the circumferential surface of the columnar foundation, the clamping seat 641 is abutted on the circumferential surface of the main pile foundation 1 in the radial direction of the main pile foundation 1 under the action of the inner side surface of the fixed platform 64.

[0081] The fixed platform 64 comprises a plurality of support platforms distributed uniformly along the circumference of the main pile foundation 1, which provide the necessary support force for the fixed platform 64. The inner diameter of the fixed platform 64 is designed to gradually increase from top to bottom, ensuring a close fit with the main pile foundation 1 and enhancing the overall stability.

[0082] A plurality of clamping seats 641 are arranged between the inner side of the fixed platform 64 and the circumferential surface of the columnar foundation. The clamping seats 641 abut against the circumferential surface of the main pile foundation 1 in the radial direction of the main pile foundation 1 through contact with the inner side of the fixed platform 64. This design effectively fixes the fixed platform 64, avoiding displacement caused by external forces and further improving the stability and reliability of the protection device.

[0083] The above embodiments only express one or several embodiments of the present application, which are described in detail and specifically, but cannot be understood as a limitation on the scope of the patent of the present application. It should be noted that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application should be subject to the appended claims.

Claims

1. A marine wind power monopile foundation protection device applied to a stable main pile foundation (1), characterized in that, The protection device comprises a secondary pile foundation (2), a tractor (3), a tension detector (4) and a steel cable (5), the secondary pile foundation (2) is longitudinally arranged on the seabed, the secondary pile foundation (2) is circumferentially distributed on the side of the main pile foundation (1) along the circumference of the main pile foundation (1), the top end of the secondary pile foundation (2) is provided with a connecting port, the tractor (3) and the tension detector (4) are circumferentially distributed on the outside of the main pile foundation (1), the tractor (3) and the tension detector (4) are longitudinally distributed, the tractor (3) has a working roller capable of rotating to wind and unwind, one end of the tension detector (4) is connected with the main pile foundation (1), the steel cable (5) passes through the connecting port, the two ends of the steel cable (5) are connected with the working roller of the tractor (3) and the other end of the tension detector (4) respectively, the tension detector (4) is used for detecting the tension of the steel cable (5) in the tension state, when the tension of the steel cable (5) is greater than the tension of the steel cable (5) at the relative position, the tractor (3) guides the working roller to release the steel cable (5) at the relative position. The connecting port of the secondary pile foundation (2) is provided with a roller (21), the roller (21) has a connecting shaft (22) coaxial with the roller (21), the two ends of the connecting shaft (22) pass through the connecting port and are rotationally connected with the top end of the secondary pile foundation (2), the connecting shaft (22) extends in the transverse direction, the circumferential surface of the roller (21) is provided with a ring groove coaxial with the roller (21), the steel cable (5) is connected with the tractor (3) and the tension detector (4) after being straddled on the ring groove of the roller (21), when the steel cable (5) passes through the connecting port, the roller (21) rotates in the connecting port. The circumferential surface of the secondary pile foundation (2) is also provided with a pull-out prevention rod (23) arranged along the length direction thereof, the pull-out prevention rod (23) extends in an upwardly inclined direction, the secondary pile foundation (2) is provided with a driving rod (24) in transmission connection with the pull-out prevention rod (23), the driving rod (24) is used for driving the pull-out prevention rod (23) to deviate from the circumferential surface of the secondary pile foundation (2) after being inserted into the seabed, the top end of the driving rod (24) is provided with a connecting head (241), and the connecting port is arranged on the connecting head (241). The driving rod (24) is coaxially and slidingly arranged in the secondary pile foundation (2), the inner end of the pull-out prevention rod (23) is rotationally connected with the circumferential surface of the driving rod (24), the pull-out prevention rod (23) is also provided with a connecting groove extending along the length direction thereof, the circumferential surface of the secondary pile foundation (2) is also provided with a slot (25) extending in the longitudinal direction, the slot (25) is provided with a pivot (251) extending in the transverse direction, the pivot (251) passes through the connecting slot (25) and is slidingly matched with the connecting slot (25), when the driving rod (24) moves upward relative to the secondary pile foundation (2), the pull-out prevention rod (23) is deflected on the outside of the secondary pile foundation (2).

2. A device according to claim 1, c h a r a c t e r i s e d in that The bottom end of the secondary pile foundation (2) is provided with a plug (26), the diameter of the plug (26) gradually decreases from top to bottom, and the secondary pile foundation (2) is inserted into the seabed in the longitudinal direction through the plug (26).

3. A device according to claim 1, c h a r a c t e r i s e d in that The protection device further comprises a connecting seat (61) arranged on the circumferential surface of the main pile foundation (1) in a circumferential distribution, the connecting seat (61) is arranged on the circumferential surface of the main shaft foundation in a longitudinal sliding manner, the bottom end of the connecting seat (61) is provided with an elastic element (62) connected with the main pile foundation (1), the elastic force of the elastic element (62) needs to be overcome when the connecting seat (61) moves downward, and one end of the tension detector (4) is connected with the connecting seat (61).

4. A device according to claim 3, c h a r a c t e r i s e d in that The protection device further comprises a support mechanism, the support mechanism comprises an upper fixed sleeve (631) and a lower fixed sleeve (632) coaxially arranged on the main pile foundation (1), and a connecting column (633) arranged between the upper fixed sleeve (631) and the lower fixed sleeve (632) in a longitudinal direction, the connecting seat (61) is arranged between the upper fixed sleeve (631) and the lower fixed sleeve (632) in a longitudinal sliding manner, the connecting column (633) penetrates the connecting seat (61) in a longitudinal sliding manner, and the elastic element (62) is arranged between the connecting seat (61) and the lower fixed sleeve (632).

5. A device according to claim 4, c h a r a c t e r i s e d in that The upper fixed sleeve (631) and the lower fixed sleeve (632) are the same in structure, the lower fixed sleeve (632) comprises a plurality of fixed seats arranged in a circumferential distribution along the main shaft foundation, the inner diameter of the lower fixed sleeve (632) gradually increases from top to bottom, and a clamping block (634) is arranged between the inner circumferential surface of the lower fixed sleeve (632) and the circumferential surface of the main pile foundation (1), the clamping block (634) is abutted on the circumferential surface of the main pile foundation (1) along the radial direction of the main pile foundation (1) under the action of the inner side of the lower fixed sleeve (632).

6. A device according to claim 4, c h a r a c t e r i s e d in that The protection device further comprises a fixed platform (64) coaxially arranged on the main pile foundation (1), and the tractor (3) is arranged on the fixed platform (64) in a circumferential distribution.

7. A device according to claim 6, c h a r a c t e r i s e d in that The fixed platform (64) comprises a plurality of support tables arranged in a circumferential distribution along the main pile foundation (1), the inner diameter of the fixed platform (64) gradually increases from top to bottom, and a clamping seat (641) is arranged between the inner side of the fixed platform (64) and the circumferential surface of the columnar foundation, the clamping seat (641) is abutted on the circumferential surface of the main pile foundation (1) along the radial direction of the main pile foundation (1) under the action of the inner side of the fixed platform (64).

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