Multi-mode combined transportation method applied to offshore wind power and combined transportation equipment thereof

Abstract

The invention relates to the technical field of offshore wind power engineering, in particular to a multimodal combined transportation method and combined transportation equipment applied to offshore wind power, which comprises a front-end fixing frame structure and a rear-end heightening fixing frame structure, and is characterized in that the front-end fixing frame structure comprises a front-end frame main body; the front-end frame body is formed by combining a first upper connecting frame and a first lower connecting frame, a first fixing bolt piece is arranged at the joint of the first upper connecting frame and the first lower connecting frame, and the rear-end heightening fixing frame structure comprises a rear-end heightening frame body. A modularized high-strength alloy steel frame is adopted, a damping box body and a wave clamping groove are configured to precisely fix the blades, inclined supports, reinforcing angle plates and light reflecting plates are combined, stable supporting, damping and damage prevention, convenient hoisting and night warning of the blades are achieved, the transportation safety and adaptability are effectively improved, and the problems that a traditional device is insufficient in strength, weak in protection and the like are solved.

Description

Technical Field

[0001] This invention relates to the field of offshore wind power engineering technology, and in particular to a multimodal transport method and equipment for offshore wind power. Background Art

[0002] With the transformation of the global energy structure and the rapid development of renewable energy, offshore wind power, as an important component of clean energy, is gradually becoming a significant source of electricity supply for coastal areas. The construction of offshore wind farms typically involves transporting large wind turbine equipment, especially the enormous, complex, and heavy wind turbine blades, from the manufacturing plant to an onshore distribution center, and then delivering them to the offshore installation site via sea or land transport. This process often requires a combination of multiple modes of transportation, including road, rail, and waterway transport—the so-called "multimodal transport."

[0003] However, due to their ultra-long, ultra-large, ultra-light, and fragile physical characteristics, wind turbine blades place extremely high demands on the structural strength, stability, vibration resistance, and protective performance of the supporting equipment during transportation. Traditional transportation equipment often only considers a single transportation environment or a simple fixing method, making it difficult to adapt to the complex mechanical environment and changing operational requirements in multimodal transport. This results in problems such as insufficient structural strength, poor vibration damping, unstable blade fixing, lack of modular design, inconvenient hoisting and transfer, and susceptibility to damage from vibration and impact during transportation.

[0004] Chinese patent publication number: (CN 116216061) discloses a transport and storage rack for offshore wind turbine blades. A) Includes a movable base, a first mounting base, and a second mounting base. The second mounting base is movable along the extension direction of the movable base. The first mounting base includes a first mounting frame and multiple first mounting components, which are detachably mounted on the first mounting frame. The first mounting components have mounting countersunk holes on their sides facing the second mounting base to accommodate the connecting ends of wind turbine blades. The second mounting base includes a second mounting frame and multiple second mounting components, which are arranged in an array in the vertical direction. A mounting position for accommodating the non-connecting ends of wind turbine blades is formed between two adjacent second mounting components in the vertical direction. One mounting countersunk hole corresponds to one mounting position. However, this type of transport equipment has a single transport environment or simple fixing method, which is difficult to adapt to the complex mechanical environment and changing operational requirements in multimodal transport. It has problems such as insufficient structural strength, poor shock absorption, unstable blade fixing, lack of modular design, inconvenient hoisting and transfer, and susceptibility to damage caused by vibration and impact during transport. Therefore, there is a need for a multimodal transport method and equipment for offshore wind power. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of traditional transportation equipment, which has a single transportation environment or simple fixing method, making it difficult to adapt to the complex mechanical environment and changing operational requirements in multimodal transport. These problems include insufficient structural strength, poor shock absorption, unstable blade fixing, lack of modular design, inconvenient hoisting and transfer, and susceptibility to damage caused by vibration and impact during transportation. Therefore, this invention proposes a multimodal transport method and equipment for offshore wind power.

[0006] The technical solution adopted by this invention to solve its technical problem is: a multimodal transport equipment for offshore wind power, comprising a front-end fixed frame structure and a rear-end heightened fixed frame structure, characterized in that: the front-end fixed frame structure includes a front-end frame body, which is composed of a first upper connecting frame and a first lower connecting frame, with a first fixing bolt at the connection between the first upper connecting frame and the first lower connecting frame; the rear-end heightened fixed frame structure includes a rear-end heightened frame body, which is composed of a second upper connecting frame and a second lower connecting frame, with a second fixing bolt at the connection between the second upper connecting frame and the second lower connecting frame; a box is provided at the bottom center of the rear-end heightened frame body, with a shock-absorbing component at the bottom of the box; and wind turbine blades are provided between the front-end fixed frame structure and the rear-end heightened fixed frame structure. This technical solution divides the equipment into combinable front and rear frame structures, giving the overall structure excellent modularity, facilitating assembly and disassembly. Simultaneously, by installing a shock-absorbing enclosure beneath the blades, a stable support foundation and buffer protection are provided for the wind turbine blades during multimodal transport, effectively adapting to the mechanical requirements of different transport environments and ensuring structural safety during blade transportation. Preferably, both the front frame and the rear raised frame are cuboid frame structures composed of multiple metal rods, made of high-strength alloy steel. Equipment identification plates are located on one side of the top corner of both the front and rear raised frame structures. The use of a cuboid frame structure made of high-strength alloy steel gives the equipment high structural strength and load-bearing capacity, enabling safe and reliable support and fixation of large wind turbine blades. The equipment identification plates facilitate quick identification of equipment information, simplifying transportation, management, and safe operation, thus improving the standardization and safety of overall operations.

[0007] Preferably, the front frame body has several vertically spaced step bars on both sides, which extend horizontally and are parallel to each other. The inner wall of the front frame body has several first oblique support members, numbering 8-10 and correspondingly arranged. The outer wall of the front frame body has multiple L-shaped connectors with multiple connection holes. The step bars provide maintenance personnel with a safe climbing and inspection route, facilitating inspection and maintenance of the equipment or blades before transportation or on-site. The oblique support members enhance the overall rigidity and deformation resistance of the frame, improving structural stability. The L-shaped connectors and their connection holes provide diverse connection interfaces, allowing connection with other equipment, fixing devices, or lifting tools, enhancing the equipment's adaptability and functional expandability.

[0008] Preferably, each of the four corners of the front frame body is provided with a first reinforcing protective corner plate, and the first reinforcing protective corner plate has a first annular perforation inside. The outer wall of the front frame body is provided with multiple first lifting rings arranged at intervals along the vertical direction. The reinforcing protective corner plates improve the structural strength and impact resistance of the four corners of the frame, effectively protecting critical parts of the equipment during handling and hoisting. The annular perforations provide reliable connection points for hoisting operations, and when used with the lifting rings, safe and stable hoisting operations can be achieved, enhancing the adaptability and operational convenience of the equipment under various transportation methods.

[0009] Preferably, the rear-end heightened frame body has multiple layers of transverse support rods on both sides, and the top inner wall of the rear-end heightened frame body has second diagonal support rods on both sides. The arrangement of transverse and diagonal support rods enhances the overall transverse rigidity and bending resistance of the rear-end frame, which helps to stably support the wind turbine blades, especially when the rear of the blades may be subjected to large wind forces or inertial forces, thereby improving the reliability and safety of the overall structure and preventing deformation or instability.

[0010] Preferably, the housing has a wavy curved blade clamping groove inside, with a cross-section featuring multiple undulating curves. The inner wall of the blade clamping groove is lined with an elastic rubber buffer pad. The wavy curved clamping groove can better conform to the shape of the bottom of the wind turbine blade, achieving a more stable positioning; the multi-segment undulating curve design improves the adaptability and stability of the clamping; the elastic rubber buffer pad protects the blade surface and prevents scratches and collisions, improving the protection performance of the blade from a physical contact level and ensuring the blade remains intact during transportation.

[0011] Preferably, the vibration damping assembly includes multiple sets of damping shock absorbers arranged accordingly. Each damping shock absorber includes a square metal frame with a connecting screw at its center. The bottom of the connecting screw is connected to the frame body, and a helical spring is mounted on the connecting screw. The upper and lower ends of the helical spring are respectively connected to the top and bottom of the square metal frame. Two connecting end plates are provided at the top two ends of the square metal frame, and a third fixing bolt is provided between each connecting end plate and the bottom of the housing. This vibration damping assembly, through the combination design of springs and frames, effectively absorbs and mitigates vibrations and impacts caused by uneven roads, lifting, or waves during transportation, protecting the wind turbine blades from mechanical stress damage. The modular design of the shock absorbers facilitates installation and maintenance, improving the equipment's adaptability and safety in complex transportation environments.

[0012] Preferably, the main surface of the rear-end heightened frame is provided with several rectangular reflectors. The rectangular reflectors significantly improve the visibility of the equipment in low-light or nighttime environments, helping other vehicles, ships, or operators to identify the equipment's location in a timely manner during transportation, reducing the risk of collisions and accidents, and enhancing the overall safety protection function of the transportation process.

[0013] Preferably, each of the four corners of the rear-end heightened frame body is provided with a second reinforcing protective corner plate. The second reinforcing protective corner plate has a second annular perforation inside, and the second frame body is provided with a plurality of second lifting rings arranged at intervals along the vertical direction. The second reinforcing protective corner plates further enhance the structural strength of the rear-end frame, especially in protecting key stress points during hoisting and handling. The annular perforations and the second lifting rings together provide diverse hoisting connection methods, ensuring that the equipment can adapt to different lifting equipment and working conditions, and improving the operational flexibility and safety of the equipment during transfer, loading and unloading.

[0014] Preferred: (1) Step 1: Tighten and pre-fix the frame module The front-end fixed frame structure and the rear-end heightened fixed frame structure are connected via their respective upper and lower connecting frames, thus initially assembling the first upper connecting frame and the first lower connecting frame, and the second upper connecting frame and the second lower connecting frame. Subsequently, using the matching tools or manual operation, the first and second fixing bolts are slowly rotated, causing the bolt studs to gradually screw downwards and push the corresponding frame parts to fit tightly. When the bolts are tightened to a certain extent, a slight resistance is generated between the bolt head or internal limiting structure and the frame contact surface. At this point, the bolts have reached the preset tightening force, and a stable mechanical connection and vacuum adsorption-like fixing effect are formed between the front-end frame body and the rear-end heightened frame body, ensuring that the overall load-bearing base does not loosen or shift during subsequent use. At the same time, the box at the bottom of the rear-end heightened frame body is firmly connected to the frame body through its bottom mounting surface, providing a structural foundation for the subsequent installation of blade supports and shock absorption components.

[0015] (2) Step 2: Blade clamping and vibration damping positioning adjustment After the frame module is pre-fixed, the wind turbine blade is hoisted and initially placed between the front-end fixing frame and the rear-end heightened fixing frame. Then, the rear end of the blade is guided into the blade clamping groove of the box body at the bottom center of the rear-end heightened frame body. The clamping groove adopts a wave-shaped curved surface structure design, and its cross-section has multiple undulating curves to achieve geometric matching with the shape of the blade bottom. At the same time, an elastic rubber buffer pad is attached to the inner wall of the clamping groove. The blade is embedded in the clamping groove by its own weight or slight downward pressure, which initially achieves position limitation. Furthermore, a damping assembly consisting of multiple sets of damping shock absorbers is installed between the bottom of the box body and the rear-end heightened frame body. Each set of damping shock absorbers includes a square metal frame, connecting screws, helical springs, connecting end plates, and a third fixing bolt. By tightening the third fixing bolt, the connecting end plate and the bottom of the box body are firmly connected, and the helical springs are in a pre-compressed state to provide elastic potential energy reserves for subsequent vibration absorption. Meanwhile, the rear-end heightened frame has multiple layers of horizontal support rods on both sides, and a second inclined support rod on the top inner wall. By adjusting the relative position or pre-installed angle of each support rod, the overall frame can form precise positioning and anti-deformation support for the blades in the horizontal and vertical directions. The L-shaped connectors and lifting ring structures on the outer wall can be used to assist in positioning and lifting adjustment, ensuring that the blades' posture in space meets transportation requirements.

[0016] In addition, the L-shaped connector on the outer wall of the front frame has multiple connection holes, which, together with the reinforced protective corner plate and lifting ring, enable multi-angle fixing and adaptable hoisting; the sign on the top of the equipment and the reflector at the rear enhance operation identification and transportation safety.

[0017] (3) Step 3: Equipment disassembly and resetting preparation After the wind turbine blades are transported to the target site and unloaded, the equipment needs to be disassembled and reset for subsequent reuse. First, the first and second fixing bolts are rotated counterclockwise using tools or manually, causing the studs to gradually retract and release the clamping force on the front and rear frames. When the bolts are rotated to a specific position, the internal limiting structure no longer forms a mechanical self-locking mechanism. At this point, the connections between the various parts of the frame loosen, accompanied by a slight feeling of resistance release, and the entire modular frame structure returns to a separable state.

[0018] Subsequently, the housing and shock-absorbing components, as well as the blade fixing structure in the blade clamping slot, can be removed in sequence. The front frame and the rear heightened frame can be stored separately or reconfigured. The auxiliary functional components such as the reinforced protective corner plates, lifting rings, and L-shaped connectors can be kept intact to adapt to the re-fixing and transportation of different types of blades. The reflectors and signs can also continue to provide safety warnings and equipment identification functions in the next operation.

[0019] The advantages of this invention are: This application provides a device specifically designed for multimodal transport of offshore wind power. Through a modular design combining a front-end fixed frame structure and a rear-end heightened fixed frame structure, it achieves stable support and secure fixation of wind turbine blades during multimodal transport. Both the front-end and rear-end heightened frame bodies are constructed of high-strength alloy steel rectangular frames, possessing excellent overall structural strength and load-bearing capacity. A top-mounted equipment identification plate facilitates identification and management during transport. The footrests and L-shaped connectors on both sides of the front frame, along with the diagonal support members on the inner wall, provide convenience and structural stability for on-site operation, equipment inspection, and multi-directional connections. The reinforced protective corner plates and multiple lifting rings on the outer wall ensure safety and operational flexibility during hoisting and handling. The rear-end heightened frame body not only possesses reinforced structure and hoisting capabilities but also features… Equipped with multi-layered horizontal support rods and a top diagonal support, the overall frame is further enhanced in its resistance to bending and deformation when subjected to loads at the rear of the blades. Crucially, the equipment features a housing with shock-absorbing components at the bottom of the rear frame. The housing's interior has a wave-shaped curved clamping groove that conforms to the blade's bottom shape and is equipped with elastic rubber buffer pads. This not only achieves precise positioning and stable clamping of the blades but also effectively prevents scratches or collision damage to the blade surface during transportation. The shock-absorbing components, through a combination of helical springs and damping structures, significantly absorb and mitigate multi-directional vibrations and impacts caused by uneven roads, ocean waves, or lifting operations during transportation, protecting the wind turbine blades from mechanical stress damage from a structural foundation. Furthermore, rectangular reflectors on the rear frame surface improve the equipment's visibility at night or in low-visibility environments, enhancing safety during transportation. In summary, through the synergistic effect of its components, this equipment provides comprehensive protection, stable support, convenient operation, and safe transportation for wind turbine blades in complex multimodal transport environments. It significantly improves the reliability, adaptability, and ease of operation of offshore wind power equipment transportation, effectively addressing the shortcomings of traditional transportation devices in terms of structural strength, vibration reduction performance, blade protection, hoisting adaptability, and applicability to multiple scenarios. It has significant engineering application value and promotional significance. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Please see Figure 1-11 As shown: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall main structure of the present invention.

[0022] Figure 3 This is a schematic diagram of the rear-end heightening fixing frame structure of the present invention.

[0023] Figure 4 For the present invention Figure 3 Enlarged view of section II.

[0024] Figure 5 For the present invention Figure 3 Enlarged view of I in the middle.

[0025] Figure 6 This is a schematic diagram of the main structure of the rear-end heightening fixing frame structure of the present invention.

[0026] Figure 7 For the present invention Figure 6 Enlarged view of section III.

[0027] Figure 8 This is a schematic diagram of the front-end fixing frame structure of the present invention.

[0028] Figure 9 This is a schematic diagram of the front-end fixing frame structure of the present invention.

[0029] Figure 10 For the present invention Figure 9 Enlarged view of section IIII.

[0030] Figure 11 For the present invention Figure 9 Enlarged view of section IIIII.

[0031] In the diagram: 1. Front-end mounting frame structure; 2. Rear-end heightened mounting frame structure; 3. Wind turbine blade; 4. Rear-end heightened frame main body; 5. Second diagonal support rod; 6. Equipment identification plate; 7. Rectangular reflector; 8. Elastic rubber buffer pad; 9. Blade clamping groove; 10. Housing; 11. Horizontal support rod; 12. Second upper connecting frame; 13. Second lower connecting frame; 14. Second fixing bolt; 15. Second reinforced protective corner plate; 16. Second annular perforation; 17. Second lifting ring; 18. Connecting end plate; 19. Square metal frame; 20. Third fixing bolt; 21. Helical spring; 22. Connecting screw; 23. Front frame body; 24. First oblique support rod; 25. First lifting ring; 26. Step rod; 27. L-shaped connector; 28. Connecting hole; 29. ​​First reinforced protective corner plate; 30. First annular perforation; 31. First fixing bolt; 32. First upper connecting frame; 33. First lower connecting frame. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0033] Please see Figure 1-11 As shown: A multimodal transport device for offshore wind power includes a front-end fixed frame structure 1 and a rear-end heightened fixed frame structure 2. The front-end fixed frame structure 1 includes a front-end frame body 23, which is composed of a first upper connecting frame 32 and a first lower connecting frame 33. A first fixing bolt 31 is provided at the connection between the first upper connecting frame 32 and the first lower connecting frame 33. The rear-end heightened fixed frame structure 2 includes a rear-end heightened frame body 4, which is composed of a second upper connecting frame 12 and a second lower connecting frame 13. A second fixing bolt 14 is provided at the connection between the second upper connecting frame 12 and the second lower connecting frame 13. A box 10 is provided at the bottom center of the rear-end heightened frame body 4, and a shock-absorbing component is provided at the bottom of the box 10. Wind turbine blades 3 are located between the front-end fixed frame structure 1 and the rear-end heightened fixed frame structure 2. This technical solution divides the equipment into combinable front and rear frame structures, giving the overall structure excellent modularity and facilitating assembly and disassembly. Simultaneously, by installing a shock-absorbing housing 10 beneath the blades, a stable supporting foundation and buffer protection are provided for the wind turbine blades during multimodal transport, effectively adapting to the mechanical requirements of different transport environments and ensuring structural safety during blade transportation. In this embodiment, both the front frame main body 23 and the rear heightened frame main body 4 are cuboid frame structures composed of multiple metal rods. The metal rods of the front frame and the rear heightened frame main body 4 are made of high-strength alloy steel, and equipment identification plates 6 are provided on one side of the top corner of both the front frame main body 23 and the rear heightened frame main body 4. The use of a cuboid frame structure made of high-strength alloy steel gives the equipment high structural strength and load-bearing capacity, enabling safe and reliable support and fixation of large wind turbine blades. The equipment identification plates 6 facilitate quick identification of equipment information, simplifying transportation, management, and safe operation, and improving the overall standardization and safety of operations.

[0034] In this embodiment, the front frame body 23 has several vertically spaced step bars 26 on both sides. The step bars 26 extend horizontally and are parallel to each other. The inner wall of the front frame body 23 has several first oblique support rods 24, with 8 to 10 first oblique support rods 24 arranged correspondingly. The outer wall of the front frame body 23 has multiple L-shaped connectors 27, and the L-shaped connectors 27 have multiple connection holes 28. The step bars 26 provide maintenance personnel with a safe climbing and inspection route, facilitating the inspection and maintenance of the equipment or blades before transportation or on-site. The oblique support rods enhance the overall rigidity and deformation resistance of the frame, improving structural stability. The L-shaped connectors 27 and their connection holes 28 provide diverse connection interfaces, which can be used to connect with other equipment, fixing devices, or lifting tools, enhancing the adaptability and functional expandability of the equipment.

[0035] In this embodiment, each of the four corners of the front frame body 23 is provided with a first reinforcing protective corner plate 29. The first reinforcing protective corner plate 29 has a first annular perforation 30 inside. The outer wall of the front frame body 23 is provided with a plurality of first lifting rings 25 arranged at intervals along the vertical direction. The reinforcing protective corner plates improve the structural strength and impact resistance of the four corners of the frame, effectively protecting the key parts of the equipment during handling and hoisting. The annular perforations provide reliable connection points for hoisting operations. When used with the lifting rings, safe and stable hoisting operations can be achieved, enhancing the adaptability and operational convenience of the equipment under various transportation methods.

[0036] In this embodiment, the rear-end heightened frame body 4 is provided with multiple layers of transverse support rods 11 on both sides, and the top inner wall of the rear-end heightened frame body 4 is provided with second oblique support rods 5 on both sides. The arrangement of the transverse support rods 11 and the oblique support rods enhances the overall transverse rigidity and bending resistance of the rear-end frame, which helps to stably support the wind turbine blades, especially when the rear of the blades may be subjected to large wind forces or inertial forces, thereby improving the reliability and safety of the overall structure and preventing deformation or instability.

[0037] In this embodiment, the housing 10 has a wavy curved blade clamping groove 9 inside, with a cross-section of multiple undulating curves. The inner wall of the blade clamping groove 9 is provided with an elastic rubber buffer pad 8. The wavy curved clamping groove can better conform to the shape of the bottom of the wind turbine blade, achieving a more stable positioning; the multi-segment undulating curve design improves the adaptability and stability of clamping; the elastic rubber buffer pad 8 protects the blade surface and prevents scratches and collisions, improving the protection performance of the blade from a physical contact level and ensuring the blade remains intact during transportation.

[0038] In this embodiment, the vibration damping assembly includes multiple sets of damping shock absorbers, each damping shock absorber comprising a square metal frame 19. A connecting screw 22 is located at the center of the square metal frame 19, and the bottom of the connecting screw 22 is connected to the frame body. A helical spring 21 is mounted on the connecting screw 22, with its upper and lower ends connected to the top and bottom of the square metal frame 19, respectively. Two connecting end plates 18 are located at the top ends of the square metal frame 19, and a third fixing bolt 20 is provided between each connecting end plate 18 and the bottom of the housing 10. This vibration damping assembly, through the combination of springs and frames, effectively absorbs and mitigates vibrations and impacts caused by uneven roads, lifting, or waves during transportation, protecting the wind turbine blades from mechanical stress damage. The modular design of the shock absorbers facilitates installation and maintenance, improving the equipment's adaptability and safety in complex transportation environments.

[0039] In this embodiment, the surface of the rear-end heightened frame body 4 is provided with several rectangular reflectors 7. The rectangular reflectors 7 significantly improve the visibility of the equipment in low-light or nighttime environments, helping other vehicles, ships, or operators to identify the equipment's location in a timely manner during transportation, reducing the risk of collisions and accidents, and enhancing the overall safety protection function of the transportation process.

[0040] In this embodiment, each of the four corners of the rear-end heightened frame body 4 is provided with a second reinforcing protective corner plate 15. The second reinforcing protective corner plate 15 has a second annular perforation 16 inside. The second frame body is provided with a plurality of second lifting rings 17 arranged at intervals along the vertical direction. The second reinforcing protective corner plate 15 further enhances the structural strength of the rear-end frame, especially in protecting key stress points during hoisting and handling. The annular perforation and the second lifting rings 17 together provide diverse hoisting connection methods, ensuring that the equipment can adapt to different lifting equipment and working conditions, and improving the operational flexibility and safety of the equipment during transfer and loading / unloading.

[0041] In this embodiment: (1) Step 1: Tighten and pre-fix the frame module The front-end fixed frame structure 1 and the rear-end heightened fixed frame structure 2 are connected through their respective upper and lower connecting frames, so that the first upper connecting frame 32 and the first lower connecting frame 33, and the second upper connecting frame 12 and the second lower connecting frame 13 are initially combined. Then, using the matching tools or manual operation, the first fixing bolt 31 and the second fixing bolt 14 are slowly rotated, so that the bolt studs are gradually screwed down and pushed to the corresponding frame parts to fit tightly. When the bolt is tightened to a certain extent, a slight resistance is generated between the bolt head or the internal limiting structure and the contact surface of the frame. At this time, the bolt reaches the preset tightening force, and a stable mechanical connection and vacuum adsorption-like fixing effect are formed between the front-end frame body 23 and the rear-end heightened frame body 4, ensuring that the overall load-bearing base does not loosen or shift during subsequent use. At the same time, the box 10 at the bottom of the rear-end heightened frame body 4 is firmly connected to the frame body through its bottom mounting surface, providing a structural foundation for the subsequent installation of blade supports and shock absorption components.

[0042] (2) Step 2: Blade clamping and vibration damping positioning adjustment After the frame module is pre-fixed, the wind turbine blade is hoisted and initially placed between the front-end fixing frame and the rear-end heightened fixing frame. Then, the rear end of the blade is guided into the blade clamping groove 9 of the box 10 at the bottom center of the rear-end heightened frame body 4. The clamping groove adopts a wave-shaped curved surface structure design, and its cross-section has multiple undulating curves to achieve geometric matching with the shape of the blade bottom. At the same time, an elastic rubber buffer pad 8 is attached to the inner wall of the clamping groove. The blade is embedded in the clamping groove by its own weight or slight downward pressure, and the position is initially limited. Further, a damping assembly consisting of multiple damping shock absorbers is installed between the bottom of the box 10 and the rear-end heightened frame body 4. Each damping assembly includes a square metal frame 19, a connecting screw 22, a helical spring 21, a connecting end plate 18, and a third fixing bolt 20. By tightening the third fixing bolt 20, the connecting end plate 18 and the bottom of the box 10 are firmly connected, and the helical spring 21 is in a pre-compressed state to provide elastic potential energy reserves for subsequent vibration absorption. Meanwhile, the rear-end heightened frame body 4 is provided with multi-layer horizontal support rods 11 on both sides, and the top inner wall is provided with a second oblique support rod 5. By adjusting the relative position or pre-installed angle of each support rod, the overall frame can form a precise limit and anti-deformation support for the blade in the horizontal and vertical directions. The L-shaped connector 27 and the lifting ring structure on the outer wall can be used to assist in positioning and lifting adjustment to ensure that the blade's posture in space meets the transportation requirements.

[0043] In addition, the L-shaped connector 27 on the outer wall of the front frame is provided with multiple connection holes 28, which, together with the reinforced protective corner plate and lifting ring, enable multi-angle fixing and adaptable hoisting; the sign on the top of the equipment and the reflector at the rear enhance operation identification and transportation safety.

[0044] (3) Step 3: Equipment disassembly and resetting preparation After the wind turbine blades are transported to the target site and unloaded, the equipment needs to be disassembled and reset for subsequent reuse. First, the first fixing bolt 31 and the second fixing bolt 14 are rotated counterclockwise using tools or manually, causing the studs to gradually retract and release the clamping effect on the front and rear frames. When the bolts are rotated to a specific position, the internal limiting structure no longer forms a mechanical self-locking mechanism. At this point, the connections between the various parts of the frame loosen, accompanied by a slight feeling of resistance release, and the entire modular frame structure returns to a separable state.

[0045] Subsequently, the housing 10 and the shock-absorbing components and the blade fixing structure in the blade clamping slot 9 can be removed in sequence, and the front frame and the rear heightened frame can be stored separately or readjusted; the auxiliary functional components such as the reinforced protective corner plate, lifting ring, and L-shaped connector 27 are kept intact and can be adapted to the re-fixing and transportation tasks of different types of blades; the reflector and sign can also continue to provide safety warnings and equipment identification functions in the next operation.

[0046] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A multimodal transport equipment for offshore wind power, comprising a front-end fixed frame structure (1) and a rear-end heightened fixed frame structure (2), characterized in that: The front-end fixed frame structure (1) includes a front-end frame body (23), which is composed of a first upper connecting frame (32) and a first lower connecting frame (33). A first fixing bolt (31) is provided at the connection between the first upper connecting frame (32) and the first lower connecting frame (33). The rear-end heightened fixed frame structure (2) includes a rear-end heightened frame body (4), which is composed of a second upper connecting frame (12) and a second lower connecting frame (13). A second fixing bolt (14) is provided at the connection between the second upper connecting frame (12) and the second lower connecting frame (13). A box (10) is provided at the bottom center of the rear-end heightened frame body (4). A shock-absorbing component is provided at the bottom of the box (10). A wind turbine blade (3) is provided between the front-end fixed frame structure (1) and the rear-end heightened fixed frame structure (2).

2. The multimodal transport equipment for offshore wind power according to claim 1, characterized in that: The front frame body (23) and the rear heightened frame body (4) are both rectangular frame structures composed of multiple metal rods. The metal rods of the front frame and the rear heightened frame body (4) are made of high-strength alloy steel. Equipment identification plates (6) are provided on one side of the top corner of the front frame body (23) and the rear heightened frame body (4).

3. The multimodal transport equipment for offshore wind power according to claim 1, characterized in that: The front frame body (23) has several vertically spaced step bars (26) on both sides. The step bars (26) extend horizontally and are parallel to each other. The inner wall of the front frame body (23) has several first oblique support rods (24) in the middle area. The number of first oblique support rods (24) is 8 to 10 and they are arranged accordingly. The outer wall of the front frame body (23) has multiple L-shaped connectors (27). The L-shaped connectors (27) have multiple connection holes (28).

4. The multimodal transport equipment for offshore wind power according to claim 1, characterized in that: The front frame body (23) is provided with first reinforcing protective corner plates (29) at all four corners. The first reinforcing protective corner plates (29) are provided with first annular perforations (30) inside. The front frame body (23) is provided with multiple first lifting rings (25) arranged at intervals along the vertical direction on the outer wall.

5. The multimodal transport equipment for offshore wind power according to claim 1, characterized in that: The rear-end heightened frame body (4) is provided with multi-layer horizontal support rods (11) on both sides, and the top inner wall of the rear-end heightened frame body (4) is provided with second oblique support rods (5) on both sides.

6. The multimodal transport equipment for offshore wind power according to claim 1, characterized in that: The box (10) has a wavy curved blade clamping groove (9) inside, and its cross section has multiple undulating curves. The inner wall of the blade clamping groove (9) is provided with an elastic rubber buffer pad (8).

7. The multimodal transport equipment for offshore wind power according to claim 1, characterized in that: The damping assembly includes multiple sets of damping shock absorbers and is correspondingly arranged. The damping shock absorber includes a square metal frame (19). A connecting screw (22) is provided in the center of the square metal frame (19). The bottom of the connecting screw (22) is associated with the frame body. A helical spring (21) is provided on the connecting screw (22). The upper and lower ends of the helical spring (21) are respectively connected to the top and bottom of the square metal frame (19). Two connecting end plates (18) are provided at the top two ends of the square metal frame (19). A third fixing bolt (20) is provided between each connecting end plate (18) and the bottom of the box body (10).

8. The multimodal transport equipment for offshore wind power according to claim 1, characterized in that: The rear-end heightened frame body (4) has several rectangular reflectors (7) on its surface.

9. A multimodal transport equipment for offshore wind power according to claim 1, characterized in that: The rear-end heightened frame body (4) is provided with a second reinforced protective corner plate (15) at each of its four corners. The second reinforced protective corner plate (15) has a second annular perforation (16) inside. The second frame body is provided with a plurality of second lifting rings (17) arranged at intervals along the vertical direction.

10. A method of using the offshore wind power multimodal transport equipment as described in claim 1: (1) Step 1: Tighten and pre-fix the frame module The front-end fixing frame structure (1) and the rear-end heightened fixing frame structure (2) are connected to each other through their respective upper and lower connecting frames, so that the first upper connecting frame (32) and the first lower connecting frame (33), and the second upper connecting frame (12) and the second lower connecting frame (13) are initially combined; then, the first fixing bolt (31) and the second fixing bolt (14) are rotated so that the bolt studs are gradually screwed down and pushed to fit the corresponding frame parts tightly; when the bolt is tightened to a certain extent, a slight resistance is generated between the bolt head or the internal limiting structure and the contact surface of the frame, at which point the bolt reaches the preset tightening force; (2) Step 2: Blade clamping and vibration damping positioning adjustment After the frame module is pre-fixed, the wind turbine blade is hoisted and initially placed between the front-end fixing frame and the rear-end heightened fixing frame; then, the rear end of the wind turbine blade is guided to the blade clamping groove (9) of the box (10) at the bottom center of the rear-end heightened frame body (4); the clamping groove adopts a wave-shaped curved surface structure design, and its cross-section has multiple undulating curves, which achieves geometric matching with the bottom shape of the blade; at the same time, an elastic rubber buffer pad (8) is attached to the inner wall of the clamping groove, and the blade is embedded in the clamping groove by its own weight or slight downward pressure, initially realizing The current position is limited; furthermore, a damping assembly consisting of multiple damping components is installed between the bottom of the box (10) and the rear heightened frame body (4); each damping component includes a square metal frame (19), a connecting screw (22), a helical spring (21), a connecting end plate (18) and a third fixing bolt (20); by tightening the third fixing bolt (20), the connecting end plate (18) and the bottom of the box (10) are firmly connected, and the helical spring (21) is in a pre-compressed state, providing elastic potential energy reserves for subsequent vibration absorption; Meanwhile, the rear heightened frame body (4) is provided with multi-layer horizontal support rods (11) on both sides, and the top inner wall is provided with a second inclined support rod (5). By adjusting the relative position or pre-installed angle of each support rod, the overall frame can form a precise limit and anti-deformation support for the blade in the horizontal and vertical directions; the L-shaped connector (27) and the lifting ring structure on the outer wall can be used for auxiliary positioning and lifting adjustment. In addition, the L-shaped connector (27) on the outer wall of the front frame is provided with multiple connection holes (28), which, together with the reinforced protective corner plate and lifting ring, enable multi-angle fixing and adaptable hoisting; the sign on the top of the equipment and the reflector at the rear enhance operation identification and transportation safety; (3) Step 3: Equipment disassembly and resetting preparation After the wind turbine blades are transported to the target site and unloaded, the equipment needs to be disassembled and reset for subsequent recycling. First, the first fixing bolt (31) and the second fixing bolt (14) are rotated counterclockwise by tools or manually to gradually retract the studs and release the pressure on the front and rear frames. Then, the blade fixing structure in the housing (10), shock absorber, and blade clamping slot (9) can be removed in sequence, and the front and rear heightened frames can be stored separately or readjusted. The auxiliary functional components such as the protective corner plate, lifting ring, and L-shaped connector (27) are kept intact and can be adapted to the re-fixing and transportation of different types of blades.

Images