A vibration suppression device for a fan blade

Abstract

The utility model relates to fan blade technical field discloses a vibration suppression device of fan blade, including blade body, the rear end of blade body is provided with adjusting groove, the inside rotation of adjusting groove is connected with the rotating column, the inside of rotating column is provided with the pivot, the both ends of rotating column all are provided with control groove, the inside sliding connection of control groove has the pusher, the side fixed connection of pusher near control groove inside has the plug rod. This vibration suppression device of fan blade, the rotating column of staff sets up inside blade body is aimed at pivot and is inserted, after inserting, staff rotates rotating column, and rotating column moves pusher and plug rod simultaneously with rotating, makes pusher and arc block thicker one end form contact, and pusher promotes plug rod and inserts into the insertion hole and fixes, through above setting, makes between pivot and blade body and is firm, reaches the effect of preventing the fastening vibration suppression of falling off.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine blade technology, and in particular to a vibration suppression device for wind turbine blades. Background Technology

[0002] During operation, wind turbine blades are subject to aerodynamic loads, mechanical vibrations, and environmental factors, which can easily generate harmful vibrations. Long-term vibrations can lead to blade fatigue damage and even structural failure, affecting the safety and power generation efficiency of the wind turbine.

[0003] Traditional devices typically use simple clamping or bolt connections. However, when the fan is running at high speed, the connection between the device and the blades can easily loosen due to centrifugal force, airflow disturbance, and mechanical vibration, causing the overall structure to shake. This shaking not only reduces the vibration suppression effect but may also exacerbate blade fatigue damage and even affect the fan's operational stability and safety. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing technology has the disadvantage that the device is prone to loosening or displacement and vibration due to the action of centrifugal force and alternating load. To this end, we propose a vibration suppression device for wind turbine blades.

[0005] To achieve the above objectives, this application adopts the following technical solution: a vibration suppression device for wind turbine blades, comprising a blade body, an adjustment groove at the rear end of the blade body, a rotating column rotatably connected inside the adjustment groove, a rotating shaft inside the rotating column, control grooves at both ends of the rotating column, a push block slidably connected inside the control groove, a plug rod fixedly connected to the side of the push block near the inside of the control groove, arc blocks fixedly connected to both ends inside the adjustment groove, and insertion holes at both ends of the rotating shaft.

[0006] Preferably, both ends of the control groove are provided with sliding grooves, and both ends of the push block are fixedly connected with sliders, the surface of the sliders being slidably connected to the inside of the sliding grooves.

[0007] Preferably, a storage spring is fixedly connected to the side of the push block near the inside of the insert rod, and the side of the storage spring away from the push block is fixedly connected to the inside of the control groove.

[0008] Preferably, the adjusting groove has two annular grooves inside, and two annular blocks are fixedly connected to the outer diameter surface of the rotating column, with the surface of the annular blocks slidingly connected to the inside of the annular grooves.

[0009] Preferably, both ends of the rotating column are provided with receiving grooves, and an insert block is slidably connected inside the receiving groove. A return spring is fixedly connected to the side of the insert block near the inside of the receiving groove, and the side of the return spring away from the insert block is fixedly connected to the inside of the receiving groove. Both ends of the blade body are provided with slots.

[0010] Preferably, sliding grooves are provided on both sides of the inside of the receiving groove, and sliding blocks are fixedly connected to both ends of the insert block, with the surface of the sliding block slidingly connected to the inside of the sliding groove.

[0011] Preferably, the size of the insertion rod is adapted to the size of the insertion hole, and the surface of the insertion rod is inserted into the interior of the insertion hole.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] In this invention, the operator aligns the rotating post inside the blade body with the rotating shaft and inserts it. After insertion, the operator rotates the rotating post, which in turn moves the push block and the insertion rod, causing the push block to contact the thicker end of the arc block. The push block then pushes the insertion rod into the insertion hole for fixation. Through the above arrangement, the rotating shaft and the blade body are stabilized, achieving the effect of preventing detachment, fastening, and vibration suppression. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a schematic diagram of a partial exploded structure of the blade body of this utility model;

[0016] Figure 3 This is a schematic diagram of a partial explosion structure of the present invention;

[0017] Figure 4 This is a schematic diagram of the partially exploded structure of the rotating column of this utility model;

[0018] Figure 5 This is a schematic diagram of the internal structure of the adjustment groove of this utility model.

[0019] Legend: 1. Blade body; 2. Adjustment groove; 3. Rotating column; 4. Rotating shaft; 5. Control groove; 6. Push block; 7. Insert rod; 8. Arc block; 9. Insertion hole; 10. Slide groove; 11. Sliding block; 12. Storage spring; 13. Ring groove; 14. Ring block; 15. Retracting groove; 16. Insert block; 17. Return spring; 18. Slot; 19. Sliding groove; 20. Sliding block. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] Reference Figures 1-5 As shown, this utility model provides a technical solution: a vibration suppression device for wind turbine blades, including a blade body 1, an adjustment groove 2 at the rear end of the blade body 1, a rotating column 3 rotatably connected inside the adjustment groove 2, a rotating shaft 4 inside the rotating column 3, control grooves 5 at both ends of the rotating column 3, a push block 6 slidably connected inside the control groove 5, a plug rod 7 fixedly connected to the side of the push block 6 near the inside of the control groove 5, arc blocks 8 fixedly connected to both ends of the adjustment groove 2, and insertion holes 9 at both ends of the rotating shaft 4. The operator aligns the rotating column 3 inside the blade body 1 with the rotating shaft 4 and inserts it. After insertion, the operator rotates the rotating column 3, which, while rotating, moves the push block 6 and the plug rod 7, causing the push block 6 to contact the thicker end of the arc block 8. The push block 6 pushes the plug rod 7 into the insertion hole 9 for fixation. Through the above arrangement, the rotating shaft 4 and the blade body 1 are stabilized, achieving the effect of preventing detachment, securing, and suppressing vibration.

[0022] Reference Figure 4 As shown in this embodiment: both ends of the control groove 5 are provided with sliding grooves 10, and both ends of the push block 6 are fixedly connected with sliders 11. The surface of the sliders 11 is slidably connected to the inside of the sliding groove 10. When the operator moves the push block 6 back and forth, the push block 6 drives the sliders 11 to slide inside the sliding groove 10. Through the above settings, the push block 6 is more stable during the movement, avoiding the push block 6 from shaking or deviating during the movement, thereby improving the stability and reliability of the overall structure. At the same time, the sliders 11 can also play a certain guiding role during the sliding inside the sliding groove 10, making the movement of the push block 6 smoother and further improving the use effect.

[0023] Reference Figure 4 As shown in this embodiment: a storage spring 12 is fixedly connected to the side of the push block 6 near the inside of the insertion rod 7, and the side of the storage spring 12 away from the push block 6 is fixedly connected to the inside of the control groove 5. When the operator contacts the thicker end of the arc block 8, the arc block 8 pushes the push block 6 to compress the storage spring 12 to store force, and inserts the insertion rod 7 into the insertion hole 9 for fixation. When the operator cancels the contact between the push block 6 and the arc block 8, the limit between the insertion rod 7 and the insertion hole 9 is canceled under the action of the rebound force of the slider 11.

[0024] Reference Figure 5As shown in this embodiment: the adjusting groove 2 has two annular grooves 13 inside, and two annular blocks 14 are fixedly connected to the outer diameter surface of the rotating column 3. The surface of the annular blocks 14 is slidably connected to the inside of the annular grooves 13. When the operator adjusts the rotating column 3 to rotate, the rotating column 3 drives the annular blocks 14 to rotate inside the annular grooves 13. Through the above setting, the rotating column 3 can be made more stable when rotating, avoiding the shaking or deviation of the rotating column 3 during the rotation process, thereby improving the stability and reliability of the entire device. At the same time, during the sliding process of the annular blocks 14 inside the annular grooves 13, the rotation angle of the rotating column 3 can also be limited to a certain extent, so that the rotating column 3 can only rotate within a specific range, further enhancing the safety and controllability of the entire device.

[0025] Reference Figure 4 and Figure 5 As shown in this embodiment: both ends of the rotating column 3 are provided with receiving grooves 15, and the inside of the receiving grooves 15 is slidably connected with a plug 16. The side of the plug 16 near the inside of the receiving groove 15 is fixedly connected with a return spring 17, and the side of the return spring 17 away from the plug 16 is fixedly connected to the inside of the receiving groove 15. Both ends of the blade body 1 are provided with slots 18. When the operator rotates the rotating column 3 to fix the plug rod 7 with the plug hole 9, the receiving grooves 15 at both ends of the rotating column 3 are parallel to the slots 18, and the plug 16 is pushed by the return force of the return spring 17, so that the plug 16 and the slot 18 form a limit. Through the above settings, the rotating column 3 is prevented from shaking or rotating inside the adjusting groove 2.

[0026] Reference Figure 4 As shown in this embodiment: sliding grooves 19 are provided on both sides inside the receiving groove 15, and sliding blocks 20 are fixedly connected to both ends of the insert 16. The surface of the sliding block 20 is slidably connected to the inside of the sliding groove 19. When the operator moves the insert 16, the insert 16 drives the sliding block 20 to slide inside the sliding groove 19. Through the above settings, the movement of the insert 16 is more stable, effectively avoiding the phenomenon of the insert 16 shifting or shaking during the movement, thereby improving the stability and reliability of the overall structure.

[0027] Reference Figure 3 and Figure 4 As shown in this embodiment, the size of the insertion rod 7 is adapted to the size of the insertion hole 9, and the surface of the insertion rod 7 is inserted into the interior of the insertion hole 9. By adapting the size of the insertion rod 7 to the size of the insertion hole 9, the insertion rod 7 can be stably inserted into the interior of the insertion hole 9, and it is not easy to shake or fall off, thereby improving the stability and reliability of the overall structure.

[0028] Working principle: The operator aligns the rotating post 3 inside the blade body 1 with the rotating shaft 4 and inserts it. After insertion, the operator rotates the rotating post 3, which moves the push block 6 and the insertion rod 7 simultaneously, causing the push block 6 to contact the thicker end of the arc block 8. The push block 6 then pushes the insertion rod 7 into the insertion hole 9 for fixation. This setup stabilizes the rotating shaft 4 and the blade body 1, achieving the functions of preventing detachment, fastening, and vibration suppression. When the operator moves the push block 6 back and forth, the push block 6 drives the slider 11 to slide inside the slide groove 10. This setup makes the push block 6 more stable during movement, preventing it from slipping out of control. This design eliminates the possibility of wobbling or shifting, thereby improving the overall stability and reliability of the structure. Simultaneously, the slider 11, while sliding within the groove 10, also provides guidance, making the movement of the push block 6 smoother and further enhancing its usability. When the push block 6 contacts the thicker end of the arc block 8, the arc block 8 pushes the push block 6 to compress and store force in the energy storage spring 12, causing the insertion rod 7 to be inserted into the insertion hole 9 for fixation. When the contact between the push block 6 and the arc block 8 is removed, the rebound force of the slider 11 releases the limit between the insertion rod 7 and the insertion hole 9. When the operator adjusts the rotating column 3, the rotating column 3 drives the ring... The block 14 rotates inside the annular groove 13. This design makes the rotating column 3 more stable during rotation, preventing wobbling or deviation, thus improving the stability and reliability of the entire device. Simultaneously, the sliding motion of the block 14 within the annular groove 13 also limits the rotation angle of the rotating column 3, ensuring it can only rotate within a specific range, further enhancing the safety and controllability of the entire device. When the operator rotates the rotating column 3 to fix the insertion rod 7 to the insertion hole 9, the two ends of the rotating column 3 have grooves 15 parallel to the slot 18, which are pushed under the return force of the return spring 17. The movable insert 16 is positioned to limit the movement of the insert 16 and the slot 18. This design prevents the rotating column 3 from shaking or rotating inside the adjusting groove 2. When the operator moves the insert 16, the insert 16 drives the sliding block 20 to slide inside the sliding groove 19. This design makes the movement of the insert 16 more stable and effectively prevents the insert 16 from shifting or shaking during movement, thereby improving the stability and reliability of the overall structure. By matching the size of the insert rod 7 with the size of the socket 9, the insert rod 7 can be firmly inserted into the socket 9, making it less prone to shaking or falling out, thus improving the stability and reliability of the overall structure.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vibration suppression device for wind turbine blades, comprising a blade body (1), characterized in that: The blade body (1) has an adjustment groove (2) at its rear end. A rotating column (3) is rotatably connected inside the adjustment groove (2). A rotating shaft (4) is provided inside the rotating column (3). Control grooves (5) are provided at both ends of the rotating column (3). A push block (6) is slidably connected inside the control groove (5). A plug rod (7) is fixedly connected to one side of the push block (6) near the inside of the control groove (5). Arc blocks (8) are fixedly connected to both ends inside the adjustment groove (2). Insertion holes (9) are provided at both ends of the rotating shaft (4).

2. The vibration suppression device for wind turbine blades according to claim 1, characterized in that: Both ends of the control groove (5) are provided with sliding grooves (10), and both ends of the push block (6) are fixedly connected with sliders (11). The surface of the slider (11) is slidably connected to the inside of the sliding groove (10).

3. The vibration suppression device for wind turbine blades according to claim 1, characterized in that: A power storage spring (12) is fixedly connected to the side of the push block (6) near the inside of the insert rod (7), and the side of the power storage spring (12) away from the push block (6) is fixedly connected to the inside of the control groove (5).

4. The vibration suppression device for wind turbine blades according to claim 1, characterized in that: The adjustment groove (2) has two annular grooves (13) inside. Two ring blocks (14) are fixedly connected to the outer diameter surface of the rotating column (3). The surface of the ring blocks (14) is slidably connected to the inside of the annular grooves (13).

5. The vibration suppression device for wind turbine blades according to claim 1, characterized in that: Both ends of the rotating column (3) are provided with receiving grooves (15). Inside the receiving groove (15), there is a sliding block (16). A return spring (17) is fixedly connected to the side of the insert (16) near the inside of the receiving groove (15). The side of the return spring (17) away from the insert (16) is fixedly connected to the inside of the receiving groove (15). Both ends of the blade body (1) are provided with slots (18).

6. The vibration suppression device for wind turbine blades according to claim 5, characterized in that: The receiving groove (15) has sliding grooves (19) on both sides inside, and the two ends of the insert (16) are fixedly connected to sliding blocks (20). The surface of the sliding block (20) is slidably connected to the inside of the sliding groove (19).

7. The vibration suppression device for wind turbine blades according to claim 1, characterized in that: The size of the insertion rod (7) is adapted to the size of the insertion hole (9), and the surface of the insertion rod (7) is inserted into the interior of the insertion hole (9).

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