A fan blade inspection device
By designing a wind turbine blade maintenance device, which utilizes a fixed frame, retraction mechanism, moving mechanism, and multi-stage telescopic mechanism, the problems of equipment swaying and low safety during high-altitude maintenance are solved, thereby improving stability and convenience and ensuring maintenance efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUANENG RENEWABLES CORP LTD HEBEI BRANCH
- Filing Date
- 2023-10-11
- Publication Date
- 2026-06-23
AI Technical Summary
In existing technologies, when maintenance personnel perform maintenance on wind turbine blades at high altitudes, there are problems such as low safety, equipment swaying leading to reduced maintenance quality, and potential safety hazards for personnel.
A wind turbine blade maintenance device was designed, including a fixed frame, a retraction mechanism, a moving mechanism, an angle adjustment mechanism, and a multi-stage telescopic mechanism. Through the combined use of these mechanisms, the device can be stably fixed and flexibly adjusted to adapt to towers of different diameters, prevent swaying, and the position and angle of the maintenance platform can be adjusted as needed.
It improves the stability and accessibility of the equipment at high altitudes, ensures the safety of maintenance personnel, enhances maintenance efficiency and convenience, and avoids safety hazards caused by equipment swaying due to wind.
Smart Images
Figure CN117105138B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wind turbine blade maintenance technology, specifically a wind turbine blade maintenance device. Background Technology
[0002] Currently, with the promotion and application of clean energy, wind power generation is receiving increasing attention due to its advantages of being renewable, pollution-free, and high-energy. Wind turbines, as the main electrical equipment in wind power generation, convert the kinetic energy of wind into electrical energy. A wind turbine typically consists of a tower, a nacelle mounted on the tower, and blades connected to the nacelle. After a certain period of operation, wind turbine blades require inspection and maintenance to ensure the safety and stability of the turbine's operation. Currently, blade maintenance work involves hoisting personnel to the blades using safety ropes and harnesses. This method not only has low safety standards and fails to guarantee the personal safety of maintenance personnel, but also restricts their movement. Due to limitations, blade maintenance is inconvenient and time-consuming. Therefore, to solve the above problems, a technical solution was disclosed in patent number CN202221453298.8. In use, the maintenance equipment and personnel are hoisted to a suitable height using a basket. However, when the equipment is hoisted, due to the high altitude and fast airflow at high altitudes, the equipment may vibrate or sway due to wind. This swaying will reduce the quality of maintenance and may also pose a safety hazard to maintenance personnel, thus reducing the practicality and safety of the equipment.
[0003] Based on this, the present invention designs a wind turbine blade maintenance device to solve the above problems. Summary of the Invention
[0004] The purpose of this invention is to provide a wind turbine blade maintenance device to solve the safety and instability problems that exist in the use of the equipment mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] A wind turbine blade maintenance device includes a fixed frame, a retraction mechanism on the fixed frame, two moving mechanisms inside the fixed frame, an angle adjustment mechanism inside the fixed frame, an mounting block on the angle adjustment mechanism, two multi-stage telescopic mechanisms on the mounting block, the two multi-stage telescopic mechanisms being connected by a transmission mechanism, a connecting frame fixedly connected to the mounting block, a maintenance platform mounted on one end of the connecting frame, one end of each of the two multi-stage telescopic mechanisms being fixedly connected to the maintenance platform, and two fixing components mounted on the bottom surface of the fixed frame.
[0007] Preferably, the fixing frame includes two semi-circular frame bodies that are movably connected.
[0008] Preferably, the retraction mechanism includes a first hydraulic rod, a limiting block, and a limiting plate. Two first hydraulic rods are rotatably connected to the fixed frame. A limiting block is installed at one end of each first hydraulic rod. Two limiting plates are fixedly connected to the fixed frame. The limiting block is movably connected within the limiting plate.
[0009] Preferably, the moving mechanism includes a moving wheel, a first gear, a self-locking component, a first drive motor, and a second gear. Two moving wheels are rotatably connected within the fixed frame. A first gear is installed at one end of each moving wheel, and a self-locking component is provided at the other end of each moving wheel. Two first drive motors are installed within the fixed frame, and a second gear is installed at the output end of each first drive motor. The first gear and the second gear mesh with each other.
[0010] Preferably, a drive assembly is provided between the two multi-stage telescopic mechanisms. The multi-stage telescopic mechanism includes a primary telescopic mechanism and multiple secondary telescopic mechanisms, which are threadedly connected. The primary telescopic mechanism and the secondary telescopic mechanisms are also threadedly connected. The primary telescopic mechanism includes a first fixed shell, a first locking block, a threaded rod, and a first locking groove. The first fixed shell is fixedly connected to the mounting block. Two first locking blocks are installed inside the first fixed shell. A threaded rod is rotatably connected inside the first fixed shell. Two first locking grooves are provided on the threaded rod. The secondary telescopic mechanism includes a second fixed shell, a second locking groove, a threaded ring, a threaded sleeve, a third locking groove, a second locking block, and a third locking block. The second fixed shell is slidably connected inside the first fixed shell. A threaded ring is rotatably connected inside the second fixed shell. A threaded sleeve is installed on the threaded ring. The first locking block is slidably connected inside the second locking groove. The threaded rod is threadedly connected inside the threaded ring. The second locking block is slidably connected inside the first locking groove. The multiple secondary telescopic mechanisms are sequentially threadedly connected through the third locking groove and the third locking block.
[0011] Preferably, the outside of the inspection platform is equipped with a protective railing, and the inspection platform is equipped with a controller.
[0012] Preferably, the angle adjustment mechanism includes a gear ring, a second drive motor, and a third gear. The gear ring is rotatably connected inside the fixed frame, the mounting block is fixedly connected to the gear ring, the second drive motor is mounted on the fixed frame, and the third gear is mounted on the output end of the second drive motor. The third gear and the gear ring mesh with each other.
[0013] Preferably, the fixing assembly includes two telescopic rods and a clamping plate. The two telescopic rods are rotatably connected to the lower side of the fixing frame. A clamping plate is installed at one end of each telescopic rod, and the surface of the clamping plate is provided with a rubber anti-slip layer.
[0014] Compared with the prior art, the beneficial effects of the present invention are:
[0015] This invention features a detachable fixing frame, allowing the equipment to be installed according to the tower diameter during use. This adaptability to towers of different diameters enhances the equipment's practicality and convenience. During movement, the fixing components and tower make contact. When the equipment reaches a suitable position, the fixing components provide secondary reinforcement, while the self-locking components in the moving mechanism provide primary reinforcement, ensuring stability and preventing swaying during installation. Furthermore, the multi-stage telescopic mechanism extends the maintenance platform to a specific location, working in conjunction with the fixing frame to further stabilize the equipment and prevent swaying at high altitudes due to strong winds, thus protecting the safety of maintenance personnel and equipment. During maintenance, the maintenance platform's position can be adjusted based on the fan blade's position and angle, enhancing usability and practicality. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments 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.
[0017] Figure 1 This is a schematic diagram of the structure from the upper view of the present invention;
[0018] Figure 2 This is a schematic diagram of the structure from the lower side view of the present invention;
[0019] Figure 3 This is a schematic diagram of the structure from a partial frontal view of the present invention;
[0020] Figure 4 This is a schematic diagram of the cross-sectional structure from a partial upper view of the present invention;
[0021] Figure 5 This is a schematic diagram of the structure from a partial right-side view of the present invention;
[0022] Figure 6 This is a schematic diagram of the internal structure of the present invention from a partial right-side view.
[0023] Figure 7 This is a schematic diagram of the cross-sectional structure from a partial right-side perspective of the present invention.
[0024] The attached diagram lists the components represented by each number as follows:
[0025] 1. Fixed frame; 2. Retraction mechanism; 3. First hydraulic rod; 4. Limiting block; 5. Limiting plate; 6. Moving mechanism; 7. Moving wheel; 8. First gear; 9. Self-locking assembly; 10. First drive motor; 11. Second gear; 12. Angle adjustment mechanism; 13. Multi-stage telescopic mechanism; 14. Mounting block; 15. First-stage telescopic mechanism; 16. Second-stage telescopic mechanism; 17. First fixed shell; 18. First locking block; 19. Threaded rod; 20. First slot; 21. Second fixed shell; 22. Second slot; 23. Threaded ring; 24. Threaded sleeve; 25. Third slot; 26. Second locking block; 27. Third locking block; 28. Connecting frame; 29. Inspection table; 30. Gear ring; 31. Second drive motor; 32. Third gear; 33. Fixed assembly. Detailed Implementation
[0026] 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.
[0027] Please see Figures 1-7 The present invention provides a technical solution:
[0028] A wind turbine blade maintenance device includes a fixed frame 1, a retraction mechanism 2 on the fixed frame 1, two moving mechanisms 6 inside the fixed frame 1, an angle adjustment mechanism 12 inside the fixed frame 1, an mounting block 14 on the angle adjustment mechanism 12, two multi-stage telescopic mechanisms 13 on the mounting block 14, the two multi-stage telescopic mechanisms 13 being connected by transmission, a connecting frame 28 fixedly connected to the mounting block 14, a maintenance platform 29 mounted on one end of the connecting frame 28, one end of the two multi-stage telescopic mechanisms 13 being fixedly connected to the maintenance platform 29, and two fixing components 33 mounted on the bottom surface of the fixed frame 1.
[0029] The fixed frame 1 includes two semi-circular frames that are movably connected; this facilitates the enclosure of the wind tower, thereby ensuring the upward movement of the equipment and further improving the stability of the equipment, preventing shaking when the equipment is raised.
[0030] The retraction mechanism 2 includes a first hydraulic rod 3, a limiting block 4, and a limiting plate 5. Two first hydraulic rods 3 are rotatably connected to the fixed frame 1. A limiting block 4 is installed at one end of the first hydraulic rod 3. Two limiting plates 5 are fixedly connected to the fixed frame 1. The limiting block 4 is movably connected within the limiting plate 5. This facilitates the improvement of the connection stability of the fixed frame 1 and makes the fixed frame 1 more stable and convenient to install.
[0031] The moving mechanism 6 includes a moving wheel 7, a first gear 8, a self-locking component 9, a first drive motor 10, and a second gear 11. Two moving wheels 7 are rotatably connected inside the fixed frame 1. One end of the moving wheel 7 is equipped with the first gear 8, and the other end of the moving wheel 7 is equipped with the self-locking component 9. Two first drive motors 10 are installed inside the fixed frame 1. The output end of the first drive motor 10 is equipped with the second gear 11. The first gear 8 and the second gear 11 mesh with each other, which facilitates the control of the upward and downward movement of the equipment and makes the equipment more stable during adjustment.
[0032] A drive assembly is provided between the two multi-stage telescopic mechanisms 13. Each multi-stage telescopic mechanism 13 includes a primary telescopic mechanism 15 and multiple secondary telescopic mechanisms 16, which are threadedly connected. The primary telescopic mechanism 15 and the secondary telescopic mechanisms 16 are also threadedly connected. The primary telescopic mechanism 15 includes a first fixed housing 17, a first locking block 18, a threaded rod 19, and a first locking groove 20. The first fixed housing 17 is fixedly connected to the mounting block 14. Two first locking blocks 18 are installed inside the first fixed housing 17. A threaded rod 19 is rotatably connected inside the first fixed housing 17, and two first locking grooves 20 are provided on the threaded rod 19. The secondary telescopic mechanism 16 includes a second fixed housing 21 and a second locking groove 22. The system includes a threaded ring 23, a threaded sleeve 24, a third slot 25, a second locking block 26, and a third locking block 27. A second fixed housing 21 is slidably connected to a first fixed housing 17. A threaded ring 23 is rotatably connected inside the second fixed housing 21. A threaded sleeve 24 is installed on the threaded ring 23. A first locking block 18 is slidably connected to a second slot 22. A threaded rod 19 is threadedly connected to a threaded ring 23. A second locking block 26 is slidably connected to a first slot 20. In addition, multiple secondary telescopic mechanisms 16 are sequentially threadedly connected through the third slot 25 and the third locking block 27. This facilitates the adjustment of the telescopic length of the equipment, allowing it to be stably close to the blades during maintenance, thereby improving the maintenance efficiency and convenience of the equipment.
[0033] The maintenance platform 29 is equipped with a protective railing on its outer side and a controller on its upper side, which effectively improves the safety of the equipment.
[0034] The angle adjustment mechanism 12 includes a gear ring 30, a second drive motor 31, and a third gear 32. The gear ring 30 is rotatably connected inside the fixed frame 1, and the mounting block 14 is fixedly connected to the gear ring 30. The second drive motor 31 is mounted on the fixed frame 1, and the third gear 32 is mounted on the output end of the second drive motor 31. The third gear 32 and the gear ring 30 mesh with each other. When the equipment is adjusted to a suitable height, its rotation angle can be adjusted as needed, thereby making the equipment more convenient to use.
[0035] The fixing component 33 includes two telescopic rods and a clamping plate. The fixing frame 1 is rotatably connected to the two telescopic rods. A clamping plate is installed at one end of the telescopic rod. The surface of the clamping plate is provided with a rubber anti-slip layer. This allows the fixing component 33 to reinforce the position of the equipment when it is raised to a certain height, preventing the equipment from falling off during use.
[0036] Working principle:
[0037] During operation, the fixed frame 1 is wrapped around the tower. At this time, the moving mechanism 6 comes into contact with the tower, rotating the first hydraulic rod 3 so that the limiting block 4 installed at one end of the first hydraulic rod 3 is placed inside the limiting plate 5. Then, the first hydraulic rod 3 is controlled to retract. When both first hydraulic rods 3 retract, the fixed frame 1 tightens, causing the moving wheel 7 in the moving mechanism 6 to press tightly against the tower. Then, the maintenance personnel are attached to the maintenance platform 29, and the first drive motor 10 is controlled to work. When the first drive motor 10 works, the first gear 8 and the second gear 11 rotate, and at this time, the moving wheel 7 rotates. As the moving wheel 7 rotates, it moves along the tower, causing the fixed frame 1 to move upwards. This, in turn, moves the personnel on the maintenance platform 29 upwards. As the fixed frame 1 moves upwards, the fixing component 33 on the bottom of the fixed frame 1 gradually opens, providing secondary reinforcement. When the equipment reaches a certain height, the drive component in the multi-stage telescopic mechanism 13 is activated, causing the multi-stage telescopic mechanism 13 to extend. When the multi-stage telescopic mechanism 13 unfolds, the drive component drives the threaded rod 1. 9. When the threaded rod 19 rotates, it causes the threaded sleeve 24 to rotate through the cooperation of the first slot 20 and the second locking block 26. At the same time, the second slot 22 moves under the limitation of the first locking block 18, and the second fixed shell 21 moves on the threaded rod 19. By analogy, when multiple secondary telescopic mechanisms 16 cooperate, the threaded sleeve 24 rotates and the second fixed shell 21 moves, causing the multi-stage telescopic mechanism 13 to extend in sequence. When the multi-stage telescopic mechanism 13 extends, the position of the inspection platform 29 is pushed out at the same time, and the connecting frame 28 is extended at the same time until the inspection platform... 29 moves to a suitable position, and the drive component stops moving. At this time, the operator can inspect the fan blades. During the inspection, if it is necessary to change the angle of the inspection platform 29 and the fan blades, the second drive motor 31 is controlled to work. At this time, the third gear 32 rotates. When the third gear 32 rotates, it drives the gear plate to rotate, which in turn causes the mounting block 14 to slide in the fixed frame 1, thereby changing the position of the inspection platform 29. This allows the equipment to be changed according to people's needs during use, thereby controlling the movement and angle of the equipment to ensure the efficiency of equipment maintenance.
[0038] The mounting bracket 1 in the equipment is detachable, allowing the equipment to be installed according to the diameter of the tower, thus adapting to towers of different diameters and effectively improving its practicality and convenience. During movement, the mounting component 33 makes contact with the tower. When the equipment is moved to a suitable position, the mounting component 33 effectively reinforces the equipment, while the self-locking component 9 in the moving mechanism 6 provides primary reinforcement, ensuring stability when the equipment is fixed in the appropriate position and preventing swaying. When the equipment is moved to a suitable position, the multi-stage telescopic mechanism 13 can extend the maintenance platform 29 to a certain position, working in conjunction with the mounting bracket 1 to make the equipment more stable during use, preventing swaying caused by high winds at high altitudes, which could affect the safety of maintenance equipment and personnel. During maintenance, the position of the maintenance platform 29 can be adjusted according to the position and angle of the fan blades, making the equipment more convenient and practical, further improving its usability and convenience.
Claims
1. A wind turbine blade maintenance device, comprising a fixing frame (1), characterized in that: The fixed frame (1) is provided with a retraction mechanism (2), the fixed frame (1) is provided with two moving mechanisms (6), the fixed frame (1) is provided with an angle adjustment mechanism (12), the angle adjustment mechanism (12) is provided with an installation block (14), the installation block (14) is provided with two multi-stage telescopic mechanisms (13), the two multi-stage telescopic mechanisms (13) are connected by transmission, the installation block (14) is fixedly connected with a connecting frame (28), one end of the connecting frame (28) is installed with a maintenance platform (29), one end of the two multi-stage telescopic mechanisms (13) is fixedly connected to the maintenance platform (29), and the bottom surface of the fixed frame (1) is provided with two fixing components (33). A drive assembly is provided between the two multi-stage telescopic mechanisms (13). The multi-stage telescopic mechanism (13) includes a primary telescopic mechanism (15) and multiple secondary telescopic mechanisms (16). The multiple secondary telescopic mechanisms (16) are threaded together. The primary telescopic mechanism (15) and the secondary telescopic mechanisms (16) are threaded together. The primary telescopic mechanism (15) includes a first fixed shell (17), a first locking block (18), a threaded rod (19), and a first locking groove (20). The first fixed shell (17) is fixedly connected to the mounting block (14). Two first locking blocks (18) are installed inside the first fixed shell (17). A threaded rod (19) is rotatably connected inside the first fixed shell (17). Two first locking grooves (20) are opened on the threaded rod (19). The secondary telescopic mechanism (15) includes a primary telescopic mechanism (15), a secondary telescopic mechanism (16), a secondary telescopic mechanism (16), and a secondary telescopic mechanism (16). The primary telescopic mechanism (15) includes a primary telescopic mechanism (15), a primary telescopic mechanism (15), a secondary telescopic mechanism (16), a secondary telescopic mechanism (15), a primary telescopic mechanism (15), a secondary telescopic mechanism (16 ... The mechanism (16) includes a second fixed shell (21), a second slot (22), a threaded ring (23), a threaded sleeve (24), a third slot (25), a second block (26), and a third block (27). The second fixed shell (21) is slidably connected to the first fixed shell (17). The threaded ring (23) is rotatably connected inside the second fixed shell (21). The threaded sleeve (24) is installed on the threaded ring (23). The first block (18) is slidably connected to the second slot (22). The threaded rod (19) is threadedly connected to the threaded ring (23). The second block (26) is slidably connected to the first slot (20). In addition, multiple secondary telescopic mechanisms (16) are sequentially threadedly connected through the third slot (25) and the third block (27). The angle adjustment mechanism (12) includes a gear ring (30), a second drive motor (31) and a third gear (32). The gear ring (30) is rotatably connected inside the fixed frame (1). The mounting block (14) is fixedly connected to the gear ring (30). The second drive motor (31) is mounted on the fixed frame (1). The third gear (32) is mounted on the output end of the second drive motor (31). The third gear (32) and the gear ring (30) mesh with each other.
2. The wind turbine blade maintenance device according to claim 1, characterized in that: The fixed frame (1) includes two semi-circular frames that are movably connected.
3. The wind turbine blade maintenance device according to claim 1, characterized in that: The retraction mechanism (2) includes a first hydraulic rod (3), a limiting block (4) and a limiting plate (5). Two first hydraulic rods (3) are rotatably connected to the fixed frame (1). A limiting block (4) is installed at one end of the first hydraulic rod (3). Two limiting plates (5) are fixedly connected to the fixed frame (1). The limiting block (4) is movably connected inside the limiting plate (5).
4. The wind turbine blade maintenance device according to claim 1, characterized in that: The moving mechanism (6) includes a moving wheel (7), a first gear (8), a self-locking component (9), a first drive motor (10), and a second gear (11). Two moving wheels (7) are rotatably connected inside the fixed frame (1). One end of the moving wheel (7) is equipped with the first gear (8), and the other end of the moving wheel (7) is provided with the self-locking component (9). Two first drive motors (10) are installed inside the fixed frame (1). The output end of the first drive motor (10) is equipped with the second gear (11). The first gear (8) and the second gear (11) mesh with each other.
5. A wind turbine blade maintenance device according to claim 1, characterized in that: The maintenance platform (29) is equipped with a protective railing on its outer side, and a controller is provided on the maintenance platform (29).
6. The wind turbine blade maintenance device according to claim 1, characterized in that: The fixing component (33) includes two telescopic rods and a clamping plate. The fixing frame (1) has two telescopic rods rotatably connected to its lower side. A clamping plate is installed at one end of each telescopic rod, and a rubber anti-slip layer is provided on the surface of the clamping plate.