Fixing structure for transporting blades of wind driven generator
The curved surface design of the arc-shaped placement plate and the arc-shaped pressure plate and the adaptive clamping of the gear rack solve the problem that the traditional fixed structure is difficult to adapt to the curvature of the blade, achieves uniform pressure distribution and vibration reduction effect on the blade surface, and improves transportation safety and life.
Patent Information
- Application Number
- CN202511035509.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-25
- Publication Date
- 2025-10-10
AI Technical Summary
During the transportation of traditional wind turbine blades, the fixed structure is difficult to adapt to the blade surfaces of different curvatures, resulting in local stress concentration and surface damage and internal fiber fatigue caused by long-term vibration, which affects the service life.
The curved surface design of the arc-shaped placement plate and the arc-shaped pressure plate, combined with the gear rack adaptive clamping, coordinated with the worm gear transmission and spring damper buffer structure, achieves uniform pressure distribution and vibration reduction effect on the blades.
It effectively avoids local indentations caused by traditional rigid fixation, reduces vibration during transportation, and improves the service life of the blades and safety during transportation.
Smart Images
Figure CN120756762A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of wind turbine blade transportation, in particular to a fixing structure for transporting wind turbine blades. Background Art
[0002] With the rapid development of the global renewable energy industry, wind power, as a key component of clean energy, continues to see its installed capacity rise. Wind turbine blades, as core components, are characterized by their length, width, uneven weight distribution, and fragile material (mostly made of composite materials). Safety during transportation has long been an industry challenge. In recent years, onshore wind turbine blades have exceeded 80 meters in length, while offshore wind turbine blades are approaching 120 meters. Transporting blades requires crossing complex road conditions such as bridges and tunnels, placing higher demands on the adjustment accuracy, cushioning performance, and adaptability of the mounting structure. Traditional transportation methods often use simple brackets. However, since blade surfaces are typically curved rather than flat, the fixed contact surface between the blade mounting structure and the blade surface is fixed, making it difficult to adapt to blade structures with varying curvatures. This can easily lead to surface damage due to localized stress concentration. Furthermore, the jerky vibrations of the transport vehicle are directly transmitted to the blades. Long-term high-frequency vibrations can cause internal fiber fatigue, shortening their service life. Summary of the Invention
[0003] In view of the shortcomings of the prior art, the present invention provides a fixed structure for transporting wind turbine blades to solve the problems raised in the above background technology: Traditional transportation methods mostly use simple brackets for fixing. Since the blade surface is not flat, but usually curved, the contact surface between the blade fixing structure and the blade surface is fixed, which makes it difficult to adapt to blade structures with different curvatures. Local stress concentration can easily lead to surface damage. In addition, the bumpy vibration of the transport vehicle during driving is directly transmitted to the blade. Long-term high-frequency vibration will cause internal fiber fatigue and affect the service life.
[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A fixed structure for transporting wind turbine blades, comprising a mounting seat, wherein the top of the mounting seat is slidably connected to a movable seat, the top of the movable seat is symmetrically fixedly connected to a fixed frame, the top of the fixed frame is slidably provided with a U-shaped frame, the outer side of the U-shaped frame is fixedly connected to a worm gear, the top of the U-shaped frame is detachably connected to a connecting plate, the inside of the U-shaped frame is slidably connected to an arc-shaped placement plate, the inside of the U-shaped frame is fixedly connected to a fixed plate, the bottom of the arc-shaped placement plate is symmetrically fixedly connected to a second support frame, the top of the fixed plate is symmetrically fixedly connected to a sliding rod, the outer side of the sliding rod is slidably connected to the second support frame, a pressure spring is fixedly connected between the bottom of the second support frame and the fixed plate, a damper is fixedly connected between the bottom of the arc-shaped placement plate and the fixed plate, a cylinder is symmetrically fixedly connected to the top of the connecting plate, the output end of the cylinder is fixedly connected to the connecting frame through the bottom of the connecting plate, the two ends of the connecting frame are slidably connected to racks, the inside of the connecting frame is rotatably connected to a gear, the two sides of the gear are meshed with the rack, and the bottom of the rack is rotatably connected to a curved pressure plate.
[0005] Preferably, the fixing brackets are provided with two groups, a worm is rotatably connected between the two groups of fixing brackets, and one side of the worm is meshedly connected with a worm wheel.
[0006] Preferably, the top of the mounting seat is rotatably connected to a threaded screw, and the outer side of the threaded screw is threadedly connected to the movable seat.
[0007] Preferably, a first motor is fixedly connected to the top of the mounting seat, and one end of the threaded screw passes through one side of the mounting seat and is fixedly connected to the output end of the first motor.
[0008] Preferably, one side of a group of the fixing frames is fixedly connected to a second motor, and one end of the worm passes through one side of the fixing frame and is fixedly connected to an output end of the second motor.
[0009] Preferably, the interior of the fixed frame is rotatably connected to a first rotating shaft, a first torsion spring is fixedly connected between the outer side of the first rotating shaft and the gear, the bottom end of the rack is rotatably connected to a second rotating shaft, both ends of the second rotating shaft are fixedly connected to the arc-shaped pressure plate, and a second torsion spring is fixedly connected between the outer side of the second rotating shaft and the rack.
[0010] Preferably, a moving block is symmetrically fixedly connected to the interior of the connecting frame, a first sliding groove is provided on one side of the rack, and the outer side of the moving block is slidably connected to the first sliding groove.
[0011] Preferably, second sliding grooves are symmetrically provided on both sides of the rack, a connecting column is fixedly connected to the interior of the connecting frame, and the outer side of the connecting column is slidably connected to the second sliding groove.
[0012] Preferably, one end of the mounting seat is fixedly connected to a first support frame, and the top of the first support frame is detachably connected to a wind turbine blade body.
[0013] The present invention provides a fixed structure for transporting wind turbine blades. Compared with the prior art, it has the following advantages: 1. The fixed structure for transporting wind turbine blades has a curved placement plate and a curved pressure plate that fit the blade shape. Combined with the adaptive clamping of the gear rack, it avoids local indentations caused by traditional rigid fixation and ensures uniform pressure distribution on the blade surface. The combined buffer structure of the pressure spring and damper can reduce vibration during transportation.
[0014] 2. The fixed structure for transporting wind turbine blades, through the cooperation of worm gear, worm and fixed frame, enables angle adjustment covering 0-90°, which can cope with various road conditions such as mountain bends, urban height restrictions, tunnel passage, etc. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the present invention; Figure 3 It is a schematic diagram of the U-shaped frame structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the connection frame of the present invention; Figure 5 For the present invention Figure 3 Enlarged structural diagram of part A in the middle.
[0016] In the figure: 1. Mounting seat; 2. First support frame; 3. Wind turbine blade body; 4. Moving seat; 5. Threaded screw; 6. First motor; 7. Fixed frame; 8. U-shaped frame; 9. Worm gear; 10. Worm; 11. Second motor; 12. Arc placement plate; 13. Connecting plate; 14. Damper; 15. Fixed plate; 16. Second support frame; 17. Pressure spring; 18. Cylinder; 19. Connecting frame; 20. Rack; 21. First slide; 22. Moving block; 23. Connecting column; 24. Second slide; 25. Arc pressure plate; 26. Gear; 27. First rotating shaft; 28. First torsion spring; 29. Second rotating shaft; 30. Second torsion spring; 31. Sliding rod. DETAILED DESCRIPTION
[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0018] See also Figures 1 to 5 The present invention provides a technical solution: a fixed structure for transporting wind turbine blades, comprising a mounting base 1, a movable base 4 is slidably connected to the top of the mounting base 1, the movable base 4 moves along the top of the mounting base 1, a fixed frame 7 is symmetrically fixedly connected to the top of the movable base 4, the movable base 4 moves while the fixed frame 7 moves, a U-shaped frame 8 is slidably provided on the top of the fixed frame 7, the U-shaped frame 8 moves along the inside of the fixed frame 7, a worm gear 9 is fixedly connected to the outside of the U-shaped frame 8, the worm gear 9 moves and the U-shaped frame 8 moves, the top of the U-shaped frame 8 is detachably connected to a connecting plate 13, the connecting plate 13 is connected to the fixing plate 13, and the fixing plate 13 is connected to the fixing plate 13. The U-shaped frame 8 is detachably connected to the U-shaped frame 8 by bolts. The interior of the U-shaped frame 8 is slidably connected to an arc-shaped placement plate 12. The top of the arc-shaped placement plate 12 fits against one side of the wind turbine blade body 3. The U-shaped frame 8 rotates with the arc-shaped placement plate 12 and the wind turbine blade body 3. The bottom of the arc-shaped placement plate 12 is symmetrically fixedly connected to the second support frame 16. The top of the fixed plate 15 is symmetrically fixedly connected to the sliding rod 31. The outer side of the sliding rod 31 is slidably connected to the second support frame 16. The second support frame 16 moves along the outer side of the sliding rod 31. The bottom of the second support frame 16 is fixedly connected to the fixed plate 15. The pressure spring 17 and the second support frame 16 move to squeeze the pressure spring 17. The pressure spring 17 is squeezed to generate elastic force to buffer the vibration. The damper 14 is fixedly connected between the bottom of the arc-shaped placement plate 12 and the fixed plate 15. The damper 14 buffers the vibration again. The top of the connecting plate 13 is symmetrically fixedly connected with a cylinder 18. The output end of the cylinder 18 passes through the bottom of the connecting plate 13 and is fixedly connected to a connecting frame 19. After the cylinder 18 is turned on, it moves with the connecting frame 19. The two ends of the connecting frame 19 are slidably connected with racks 20. The connecting frame 19 moves with two sets of racks 20 moves, the internal rotation of the connecting frame 19 is connected to the gear 26, both sides of the gear 26 are meshed with the rack 20, the bottom of the rack 20 is rotatably connected to the arc pressure plate 25, and the rack 20 moves with the arc pressure plate 25. When the bottom of one group of arc pressure plates 25 contacts the surface of the wind turbine blade body 3, one group of racks 20 stops moving, and the gear 26 rotates and moves along one side of one group of racks 20, and continues to move downward with the other group of racks 20 until it contacts the surface of the wind turbine blade body 3, fixing the wind turbine blade body 3 in the U-shaped frame 8.
[0019] Furthermore, two groups of fixing frames 7 are provided, and a worm 10 is rotatably connected between the two groups of fixing frames 7. One side of the worm 10 is meshed with the worm wheel 9. The rack 20 rotates with the worm wheel 9, and the worm wheel 9 rotates with the U-shaped frame 8. The U-shaped frame 8 rotates with the wind turbine blade body 3 to adjust the position of the wind turbine blade body 3.
[0020] Furthermore, the top of the mounting base 1 is rotatably connected to a threaded screw 5 , the outer side of the threaded screw 5 is threadedly connected to the movable base 4 , and the threaded screw 5 rotates to move the movable base 4 on the top of the mounting base 1 .
[0021] Furthermore, a first motor 6 is fixedly connected to the top of the mounting base 1, and one end of the threaded screw 5 passes through one side of the mounting base 1 and is fixedly connected to the output end of the first motor 6. After the first motor 6 is turned on, it rotates with the threaded screw 5.
[0022] Furthermore, a second motor 11 is fixedly connected to one side of a set of fixing frames 7, and one end of the worm 10 passes through one side of the fixing frame 7 and is fixedly connected to the output end of the second motor 11. After the second motor 11 is turned on, it drives the worm 10 to rotate.
[0023] Furthermore, the interior of the fixed frame 7 is rotatably connected to a first rotating shaft 27, and a first torsion spring 28 is fixedly connected between the outer side of the first rotating shaft 27 and the gear 26. Both ends of the first rotating shaft 27 are fixedly connected to the gear 26. The gear 26 rotates and drives one end of the first torsion spring 28 to rotate. When the first torsion spring 28 loses its pulling force, the first torsion spring 28 drives the gear 26 to return to its original position under the action of elastic force. The bottom end of the rack 20 is rotatably connected to a second rotating shaft 29, and the rack 20 moves and drives the second rotating shaft 29 to move. Both ends of the second rotating shaft 29 are fixedly connected to the arc-shaped pressure plate 25, and the arc-shaped pressure plate 25 rotates and drives the second rotating shaft 29 to rotate. A second torsion spring 30 is fixedly connected between the outer side of the second rotating shaft 29 and the rack 20. The second rotating shaft 29 rotates and drives one end of the second torsion spring 30 to move. When one end of the second torsion spring 30 loses its pulling force, the second torsion spring 30 drives the second rotating shaft 29 and the arc-shaped pressure plate 25 to return to their original positions under the action of elastic force.
[0024] Furthermore, a moving block 22 is symmetrically fixedly connected to the inside of the connecting frame 19, a first sliding groove 21 is opened on one side of the rack 20, the outer side of the moving block 22 is slidingly connected to the first sliding groove 21, and the connecting frame 19 moves with the moving block 22 inside the first sliding groove 21.
[0025] Furthermore, second slide grooves 24 are symmetrically provided on both sides of the rack 20, and a connecting column 23 is fixedly connected to the inside of the connecting frame 19. The outer side of the connecting column 23 is slidingly connected to the second slide groove 24. The connecting frame 19 moves with the connecting column 23 inside the second slide groove 24 to maintain the stability of the connecting frame 19 during movement.
[0026] Furthermore, one end of the mounting base 1 is fixedly connected to the first support frame 2 , and the top of the first support frame 2 is detachably connected to the wind turbine blade body 3 to support the wind turbine blade body 3 .
[0027] When in use, start the first motor 6 to drive the threaded screw 5 to rotate, driving the moving seat 4 to slide horizontally along the mounting seat 1. By adjusting the position of the moving seat 4, blades of different lengths can be adapted. The second motor 11 drives the worm 10 to rotate, and the meshing transmission of the worm 10 and the worm wheel 9 is used to drive the U-shaped frame 8 to rotate around the fixed frame 7, so as to realize the angle adjustment of the wind turbine blade body 3 within the range of zero to ninety degrees, meeting the space avoidance requirements during curve transportation or tunnel passage. After the wind turbine blade body 3 is placed on the arc-shaped placement plate 12, the cylinder 18 pushes the connecting frame 19 downward, and the two sets of racks 20 move synchronously with the connecting frame 19. When the arc pressure plate 25 on one side first contacts the surface of the wind turbine blade body 3, the rack 20 on that side stops moving, and the gear 26 rolls along its tooth surface and drives the rack 20 on the other side to continue to descend until the two sets of arc pressure plates 25 are tightly fitted to the curved surface of the wind turbine blade body 3. The adaptive clamping of the asymmetric blades is achieved through the differential movement of the gear 26 and the rack 20. The bolt connection design between the connecting plate 13 and the U-shaped frame 8, the vertical vibration generated by the transportation bumps is first transmitted to the arc placement plate 12, and the second support frame 16 slides along the slide rod 31 to squeeze the pressure spring 17, and the elastic force of the pressure spring 17 is used to offset part of the vibration energy. The damper 14 works synchronously, and the high-frequency vibration is attenuated by the internal oil damping effect, and a two-level shock absorption system of "elastic buffering + damping energy consumption" is formed with the pressure spring 17 to reduce the vibration acceleration borne by the blade to a safe threshold.
[0028] At the same time, the contents not described in detail in this specification belong to the existing technology well known to those skilled in the art.
[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.
[0030] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A fixed structure for transporting wind turbine blades, comprising a mounting base (1), characterized in that: The top of the mounting seat (1) is slidably connected to a movable seat (4), the top of the movable seat (4) is symmetrically fixedly connected to a fixed frame (7), the top of the fixed frame (7) is slidably connected to a U-shaped frame (8), the outer side of the U-shaped frame (8) is fixedly connected to a worm gear (9), the top of the U-shaped frame (8) is detachably connected to a connecting plate (13), the inside of the U-shaped frame (8) is slidably connected to an arc-shaped placement plate (12), the inside of the U-shaped frame (8) is fixedly connected to a fixed plate (15), the bottom of the arc-shaped placement plate (12) is symmetrically fixedly connected to a second support frame (16), the top of the fixed plate (15) is symmetrically fixedly connected to a sliding rod (31), the outer side of the sliding rod (31) is connected to the second support frame (1 6) Sliding connection, a pressure spring (17) is fixedly connected between the bottom of the second support frame (16) and the fixed plate (15), a damper (14) is fixedly connected between the bottom of the arc-shaped placement plate (12) and the fixed plate (15), the top of the connecting plate (13) is symmetrically fixedly connected to a cylinder (18), the output end of the cylinder (18) passes through the bottom of the connecting plate (13) and is fixedly connected to a connecting frame (19), the two ends of the connecting frame (19) are slidably connected to a rack (20), the interior of the connecting frame (19) is rotatably connected to a gear (26), both sides of the gear (26) are meshed with the rack (20), and the bottom of the rack (20) is rotatably connected to an arc-shaped pressure plate (25).
2. A wind turbine blade transport fixing structure according to claim 1, characterized in that: The fixing frames (7) are provided with two groups, and a worm (10) is rotatably connected between the two groups of fixing frames (7), and one side of the worm (10) is meshedly connected with the worm wheel (9).
3. The wind turbine blade transport fixing structure according to claim 1, characterized in that: The top of the mounting seat (1) is rotatably connected to a threaded screw (5), and the outer side of the threaded screw (5) is threadedly connected to the movable seat (4).
4. A wind turbine blade transport fixing structure according to claim 3, characterized in that: The top of the mounting seat (1) is fixedly connected to a first motor (6), and one end of the threaded screw (5) passes through one side of the mounting seat (1) and is fixedly connected to the output end of the first motor (6).
5. The wind turbine blade transport fixing structure according to claim 2, characterized in that: One side of a set of the fixing frames (7) is fixedly connected to a second motor (11), and one end of the worm (10) passes through one side of the fixing frame (7) and is fixedly connected to an output end of the second motor (11).
6. The wind turbine blade transport fixing structure according to claim 1, characterized in that: The interior of the fixed frame (7) is rotatably connected to a first rotating shaft (27), the outer side of the first rotating shaft (27) is fixedly connected to the gear (26) by a first torsion spring (28), the bottom end of the rack (20) is rotatably connected to a second rotating shaft (29), both ends of the second rotating shaft (29) are fixedly connected to the arc-shaped pressure plate (25), and the outer side of the second rotating shaft (29) is fixedly connected to the rack (20) by a second torsion spring (30).
7. The wind turbine blade transport fixing structure according to claim 1, characterized in that: A moving block (22) is symmetrically fixedly connected to the interior of the connecting frame (19), a first sliding groove (21) is provided on one side of the rack (20), and the outer side of the moving block (22) is slidably connected to the first sliding groove (21).
8. The wind turbine blade transport fixing structure according to claim 1, characterized in that: Second sliding grooves (24) are symmetrically provided on both sides of the rack (20), a connecting column (23) is fixedly connected to the interior of the connecting frame (19), and the outer side of the connecting column (23) is slidably connected to the second sliding groove (24).
9. The wind turbine blade transport fixing structure according to claim 1, characterized in that: One end of the mounting seat (1) is fixedly connected to a first support frame (2), and the top of the first support frame (2) is detachably connected to a wind turbine blade body (3).