Fatigue performance simulation test equipment for wind turbine generator blades

Abstract

The invention discloses a wind turbine generator blade fatigue performance simulation test device, and relates to the technical field of wind turbine generator blade fatigue performance simulation tests.The wind turbine generator blade fatigue performance simulation test device comprises a bottom plate, the upper surface of one end of the bottom plate is fixedly connected with a fixing plate, a second motor and a rear sliding rail, and one side of the fixing plate is fixedly connected with a blade; the upper surface of the other end of the bottom plate is fixedly connected with a front sliding rail, and the top of the rear sliding rail is slidably connected with a second sliding block and a third sliding block. According to the fatigue performance simulation test equipment for the wind turbine generator blades, the distance between a second sliding block and a third sliding block is shortened in the rotating process of the rotating disc, so that the distance for a connecting rope to pull the blades to move is larger, the bending degree of the blades is larger, the distance between the second sliding block and the third sliding block is increased, and the fatigue performance of the blades is improved. The distance that the connecting rope pulls the blade to move is smaller, so that the bending degree of the blade is smaller, and the effect of testing the fatigue performance of the blade under different wind power conditions in a short time is achieved.

Description

Technical Field

[0001] This invention relates to the field of fatigue performance simulation testing technology for wind turbine blades, and more particularly to a fatigue performance simulation testing device for wind turbine blades. Background Technology

[0002] The fatigue performance simulation testing technology of wind turbine blades plays a crucial role in the wind energy industry. As wind power equipment continues to grow larger and its operating time extends, ensuring the reliability and durability of blades becomes particularly important. The combination of advanced computer simulation and material testing technology makes the assessment of blade fatigue performance more accurate. These technologies can not only simulate the performance of blades under different wind speeds and climate conditions, but also identify potential fatigue damage in advance, providing data support for design optimization. With the development of sensor technology, the ability of real-time monitoring and data analysis has also been significantly improved.

[0003] Current wind turbine blade fatigue performance simulation testing equipment still has some obvious shortcomings in practical use. The testing cycle of these devices is usually long, resulting in low overall testing efficiency and failing to meet the needs of the rapidly developing wind power market. During the testing process, the equipment cannot quickly change the wind speed, limiting its ability to simulate different wind speeds and wind force changes. This means that the test results may not accurately reflect the complex wind conditions encountered by the blades in the natural environment. The lack of simulation of natural wind force changes makes it impossible to fully evaluate the fatigue performance of the blades in real operation, which may lead to unexpected failures and damage in actual applications and fail to meet actual needs. Summary of the Invention

[0004] This invention discloses a fatigue performance simulation testing device for wind turbine blades, which aims to solve the technical problems in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A fatigue performance simulation testing device for wind turbine blades includes a base plate. A fixed plate, a second motor, and a rear slide rail are fixedly connected to the upper surface of one end of the base plate. A blade is fixedly connected to one side of the fixed plate. A front slide rail is fixedly connected to the upper surface of the other end of the base plate. A second slider and a third slider are slidably connected to the top of the rear slide rail. The third slider is equipped with a connecting mechanism, which includes a locking block and a connecting rod. The bottom of the locking block is provided with a locking plate, and one end of the connecting rod is provided with multiple slots. By controlling the locking plate to lock into the slots, the third slider and the second slider are connected together through the connecting rod. A clamping mechanism is installed at one end of the blade. The clamping mechanism includes an outer rope, an inner rope, and a pull plate. The pull plate has an outer groove and an inner groove respectively. By pulling the outer rope and the inner rope through the pull plate, one end of the blade is pulled, causing the blade to bend. An adjustment mechanism is installed on the top of the front slide rail. The adjustment mechanism includes a first slider and a pull block. A connecting rope is fixedly connected to one side of the pull block, and a sliding plate is fixedly connected to the upper surface of the first slider. By controlling the position of the first slider and simultaneously using the sliding of the pull block, the blade can be pulled in different directions. A safety mechanism is installed at one end of the slide block. The safety mechanism includes a pin and a fixing hole. By sliding the pull block, the pin is driven to insert into the fixing hole, thereby stopping the pull block from moving.

[0006] The connecting mechanism also includes a fourth motor disposed on the top of the third slider. One end of the output shaft of the fourth motor is fixedly connected to a third screw, which is threadedly connected to a locking block. The connecting rod is slidably connected to the third slider. The other end of the connecting rope is fixedly connected to the third slider. A third motor is fixedly connected to one side of the second slider. A second screw is fixedly connected to one end of the output shaft of the third motor. A linkage plate is rotatably connected to the other side of the second slider. The linkage plate is rotatably connected to one side of the turntable. One end of the second screw is threadedly connected to the third slider. The locking block is inside the third slider and slidably connected to it. The distance between multiple locking slots is the same. The bottom edge of the locking plate is inverted trapezoidal. The width of the locking plate is smaller than the width of the locking slot. A turntable is fixedly connected to one end of the output shaft of the second motor.

[0007] In a preferred embodiment, the clamping mechanism further includes a straight plate fixedly connected to both ends of the third slider and the inner rope, with multiple bolts inserted into one side of the straight plate and a bent plate threaded to one end of each bolt. The straight plate and the bent plate clamp one end of the blade in the middle. The outer rope slides inside the outer groove, and the inner rope slides inside the inner groove. The pull plate and the pull block are rotatably connected. The upper surface of the slide plate is provided with a motion groove, and the pull block slides inside the motion groove.

[0008] The adjustment mechanism also includes a first motor fixedly connected to one end of the rear slide rail, a first screw at one end of the output shaft of the first motor, the first screw being threadedly connected to the first slider, an auxiliary wheel rotatably connected to the upper surface of the slide, a groove on the outer wall of the auxiliary wheel, a connecting rope contacting the groove, and pulling the pull block through the connecting rope, thereby causing the blade to deflect, and the auxiliary wheel serving to tension the connecting rope.

[0009] The safety mechanism further includes a slide rod slidably connected to one end of the slide plate. One end of the slide rod is fitted with a spring, and the other end of the slide rod is fixedly connected to a pressure block. A rotating plate is rotatably connected to one end of the slide plate near the pressure block. One end of the rotating plate is provided with a slide groove, and the other end of the rotating plate is provided with an angle. A pin is slidably connected to one end of the slide plate near the slide groove. One end of the pin is provided with a guide rod, and the guide rod slides inside the slide groove.

[0010] As can be seen from the above, the fatigue performance simulation test equipment for wind turbine blades provided by the present invention has the following technical effects.

[0011] Firstly, by using a third motor to drive the second screw to rotate, which in turn drives the third slider to move linearly, the distance between the second and third sliders is changed. During the rotation of the turntable, reducing the distance between the second and third sliders allows the connecting rope to pull the blade a greater distance, thus increasing the degree of blade bending. Conversely, increasing the distance between the second and third sliders allows the connecting rope to pull the blade a smaller distance, thus reducing the degree of blade bending. This achieves the effect of testing the fatigue performance of the blade under different wind conditions in a short period of time.

[0012] Secondly, by controlling the rotation of the fourth motor to drive the locking block upward, the third slider and the connecting rod are kept sliding. After adjusting the distance between the second and third sliders, the fourth motor is controlled to drive the locking block downward, so that the locking plate is locked inside the slot, preventing the third slider and the connecting rod from sliding. This keeps the distance between the second and third sliders constant, thereby reducing the load on the threads of the second screw surface from the third slider, protecting the accuracy of the second screw threads, and making the movement of the third slider more precise.

[0013] Thirdly: When the blade suddenly breaks, the pull block and pull plate slide towards the slide rod. The pull block hits the slide rod and compresses the spring, which in turn drives the pressure block to squeeze the rotating plate, causing the rotating plate to rotate. This causes the pin to slide towards the spring, making the pin stuck inside the fixing hole, stopping the pull block from sliding. This stops the movement of the broken part of the blade, preventing the high-speed blade from causing injury to the equipment and personnel. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure proposed in this invention.

[0015] Figure 2 This is a schematic diagram of the clamping mechanism proposed in this invention.

[0016] Figure 3 This is a schematic diagram of a partial structure proposed in this invention.

[0017] Figure 4This is a schematic diagram of the cross-sectional structure proposed in this invention.

[0018] Figure 5 This is a side view schematic diagram of the structure proposed in this invention.

[0019] Figure 6 The present invention proposes Figure 2 A magnified structural diagram of point A in the middle.

[0020] Figure 7 The present invention proposes Figure 3 A magnified schematic diagram of point B.

[0021] Figure 8 This is a schematic diagram of the pull block structure proposed in this invention.

[0022] In the diagram: 1. Base plate; 2. Front slide rail; 3. Slide plate; 4. First motor; 5. Auxiliary wheel; 6. Connecting rope; 7. Blade; 8. Fixing plate; 9. Second motor; 10. Turntable; 11. Rear slide rail; 12. First screw; 13. Pull block; 14. Pull plate; 15. Outer rope; 16. Inner rope; 17. Straight plate; 18. Bolt; 19. Bent plate; 20. First slider; 21. Third motor; 22. Second slider; 23. Second screw; 24. Connecting rod; 25. Third slider; 26. Linkage plate; 27. Fourth motor; 28. Third screw; 29. ​​Locking block; 30. Locking groove; 31. Locking plate; 32. Spring; 33. Slide rod; 34. Pressure block; 35. Rotating plate; 36. Slide groove; 37. Pin; 38. Motion groove; 39. Fixing hole; 40. Outer groove; 41. Inner groove. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] Reference Figure 1 — Figure 8 A fatigue performance simulation test device for wind turbine blades includes a base plate 1. A fixing plate 8, a second motor 9 and a rear slide rail 11 are fixedly connected to the upper surface of one end of the base plate 1. A blade 7 is fixedly connected to one side of the fixing plate 8. A front slide rail 2 is fixedly connected to the upper surface of the other end of the base plate 1. A second slider 22 and a third slider 25 are slidably connected to the top of the rear slide rail 11. The third slider 25 is equipped with a connecting mechanism, which includes a locking block 29 and a connecting rod 24. The bottom of the locking block 29 is provided with a locking plate 31, and one end of the connecting rod 24 is provided with multiple slots 30. By controlling the locking plate 31 to be locked inside the slots 30, the third slider 25 and the second slider 22 are connected together through the connecting rod 24. A clamping mechanism is installed at one end of the blade 7. The clamping mechanism includes an outer rope 15, an inner rope 16 and a pull plate 14. The pull plate 14 is provided with an outer groove 40 and an inner groove 41. By pulling the outer rope 15 and the inner rope 16 through the pull plate 14, one end of the blade 7 is pulled, causing the blade 7 to bend. An adjustment mechanism is installed on the top of the front slide rail 2. The adjustment mechanism includes a first slider 20 and a pull block 13. A connecting rope 6 is fixedly connected to one side of the pull block 13. A slide plate 3 is fixedly connected to the upper surface of the first slider 20. By controlling the position of the first slider 20 and simultaneously using the sliding of the pull block 13, the blade 7 can be pulled in different directions. A safety mechanism is installed at one end of the slide block 3. The safety mechanism includes a pin 37 and a fixing hole 39. By sliding the pull block 13, the pin 37 is driven to insert into the fixing hole 39, so that the pull block 13 stops moving.

[0025] The connecting mechanism also includes a fourth motor 27 located on the top of the third slider 25. One end of the output shaft of the fourth motor 27 is fixedly connected to a third screw 28, which is threadedly connected to a locking block 29. The connecting rod 24 is slidably connected to the third slider 25. The other end of the connecting rope 6 is fixedly connected to the third slider 25. A third motor 21 is fixedly connected to one side of the second slider 22. A second screw 23 is fixedly connected to one end of the output shaft of the third motor 21. A linkage plate 26 is rotatably connected to the other side of the second slider 22. The linkage plate 26 is rotatably connected to one side of the turntable 10. One end of the second screw 23 is threadedly connected to the third slider 25. The locking block 29 is inside the third slider 25 and slidably connected to it. The distance between the multiple locking slots 30 is the same. The bottom edge of the locking plate 31 is inverted trapezoidal. The width of the locking plate 31 is smaller than the width of the locking slot 30. One end of the output shaft of the second motor 9 is fixedly connected to the turntable 10.

[0026] In this embodiment, the second motor 9 drives the turntable 10 to rotate, and the linkage plate 26 drives the second slider 22 and the third slider 25 to move back and forth in a straight line. This drives the pull plate 14 through the connecting rope 6, and thus drives one end of the blade 7 to deflect through the connecting mechanism. Because the second slider 22 and the third slider 25 move back and forth in a straight line, one end of the blade 7 is pulled to bend repeatedly.

[0027] Specifically, the third motor 21 drives the second screw 23 to rotate, which in turn drives the third slider 25 to move linearly. This changes the distance between the second slider 22 and the third slider 25. As the turntable 10 rotates, the distance between the second slider 22 and the third slider 25 is reduced, allowing the connecting rope 6 to pull the blade 7 a greater distance, thus increasing the bending degree of the blade 7. Conversely, increasing the distance between the second slider 22 and the third slider 25 allows the connecting rope 6 to pull the blade 7 a smaller distance, thus reducing the bending degree of the blade 7. This achieves the effect of testing the fatigue performance of the blade 7 under different wind conditions in a short period of time.

[0028] Furthermore, during the process of controlling the distance between the second slider 22 and the third slider 25, it is necessary to disconnect the connection between the second slider 22 and the third slider 25. By controlling the rotation of the fourth motor 27, the locking block 29 is moved upward, so that the third slider 25 and the connecting rod 24 remain in sliding position. After adjusting the distance between the second slider 22 and the third slider 25, the fourth motor 27 is controlled to rotate, so that the locking block 29 is moved downward, so that the locking plate 31 is locked inside the locking groove 30, preventing the third slider 25 and the connecting rod 24 from sliding. This keeps the distance between the second slider 22 and the third slider 25 constant, thereby reducing the load of the third slider 25 on the surface thread of the second screw 23 and protecting the thread accuracy of the second screw 23.

[0029] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 In a preferred embodiment, the clamping mechanism further includes a straight plate 17 that is fixedly connected to both ends of the third slider 25 and the inner rope 16. A plurality of bolts 18 are inserted into one side of the straight plate 17, and a bent plate 19 is threaded to one end of the bolts 18. The straight plate 17 and the bent plate 19 clamp one end of the blade 7 in the middle. The outer rope 15 slides inside the outer groove 40, and the inner rope 16 slides inside the inner groove 41. The pull plate 14 is rotatably connected to the pull block 13. The upper surface of the slide plate 3 is provided with a motion groove 38, and the pull block 13 slides inside the motion groove 38.

[0030] The adjustment mechanism also includes a first motor 4 fixedly connected to one end of the rear slide rail 11, a first screw 12 at one end of the output shaft of the first motor 4, the first screw 12 being threadedly connected to the first slider 20, an auxiliary wheel 5 being rotatably connected to the upper surface of the slide plate 3, a groove being formed on the outer wall of the auxiliary wheel 5, a connecting rope 6 being in contact with the groove, and the connecting rope 6 pulling the pull block 13, thereby causing the blade 7 to deflect, and the auxiliary wheel 5 serving to tension the connecting rope 6.

[0031] The safety mechanism also includes a slide rod 33 slidably connected to one end of the slide plate 3. A spring 32 is sleeved on one end of the slide rod 33, and a pressure block 34 is fixedly connected to the other end of the slide rod 33. A rotating plate 35 is rotatably connected to one end of the slide plate 3 near the pressure block 34. A groove 36 is provided at one end of the rotating plate 35, and an angle is provided at the other end of the rotating plate 35. A pin 37 is slidably connected to one end of the slide plate 3 near the groove 36. A guide rod is provided at one end of the pin 37, and the guide rod slides inside the groove 36.

[0032] In this embodiment, the connecting rope 6 pulls the pull block 13 and the pull plate 14 to slide inside the motion groove 38, thereby causing the blade 7 to bend. By controlling the rotation of the first motor 4, the first slider 20 is driven to move linearly, causing the first slider 20 to stop at different positions, thereby changing the sliding direction of the inner rope 16 and the outer rope 15, thus changing the direction of the force applied to the blade 7, which simulates the effect of wind from different directions on the fatigue strength of the blade 7.

[0033] Furthermore, after the blade 7 reaches its fatigue strength limit, the blade 7 suddenly breaks. The pull block 13 and the pull plate 14 slide towards the slide rod 33. The pull block 13 hits the slide rod 33 and compresses the spring 32, thereby driving the pressure block 34 to squeeze the rotating plate 35, causing the rotating plate 35 to rotate. This causes the pin 37 to slide towards the spring 32, so that the pin 37 is stuck inside the fixing hole 39, stopping the pull block 13 from sliding. This stops the movement of the broken part of the blade 7, preventing the high-speed blade 7 from causing injury to the equipment and personnel after it breaks.

[0034] Working principle: In use, the second motor 9 drives the turntable 10 to rotate, which in turn drives the second slider 22 and the third slider 25 to move back and forth linearly via the linkage plate 26. This, in turn, drives the pull plate 14 via the connecting rope 6, which in turn drives one end of the blade 7 to deflect via the connecting mechanism. Because the second slider 22 and the third slider 25 are moving back and forth linearly, one end of the blade 7 is repeatedly bent. The third motor 21 drives the second screw 23 to rotate, which in turn drives the third slider 25 to move linearly, changing the distance between the second slider 22 and the third slider 25. As the turntable 10 rotates, the distance between the second slider 22 and the third slider 25 is reduced, making the connection... Rope 6 pulls blade 7 a greater distance, resulting in a greater degree of bending of blade 7. Increasing the distance between the second slider 22 and the third slider 25 reduces the distance the connecting rope 6 pulls blade 7, thus reducing the degree of bending of blade 7. This achieves the effect of testing the fatigue performance of blade 7 under different wind conditions in a short time. During the process of controlling the distance between the second slider 22 and the third slider 25, the connection between them needs to be disconnected. By controlling the rotation of the fourth motor 27, the locking block 29 moves upward, keeping the third slider 25 sliding against the connecting rod 24. After adjusting the distance between the second slider 22 and the third slider 25... By controlling the rotation of the fourth motor 27, the locking block 29 moves downward, causing the locking plate 31 to lock inside the locking groove 30. This prevents the third slider 25 and the connecting rod 24 from sliding, and keeps the distance between the second slider 22 and the third slider 25 constant. This reduces the load of the third slider 25 on the thread surface of the second screw 23, thus protecting the thread accuracy of the second screw 23. The connecting rope 6 pulls the pulling block 13 and the pulling plate 14 to slide inside the motion groove 38, causing the blade 7 to bend. By controlling the rotation of the first motor 4, the first slider 20 moves linearly, stopping the first slider 20 at different positions, thereby changing the sliding of the inner rope 16 and the outer rope 15. The direction of movement changes the direction of the force applied to the blade 7, simulating the effect of wind from different directions on the fatigue strength of the blade 7. After the blade 7 reaches its fatigue strength limit, the blade 7 will experience fracture, delamination, crack propagation, etc. At this time, the pull block 13 and the pull plate 14 slide towards the slide rod 33. The pull block 13 hits the slide rod 33 and compresses the spring 32, thereby driving the pressure block 34 to squeeze the rotating plate 35, causing the rotating plate 35 to rotate, thereby driving the pin 37 to slide towards the spring 32, so that the pin 37 is stuck inside the fixing hole 39, stopping the pull block 13 from sliding, thereby stopping the movement of the part of the blade 7 that may break, preventing the high-speed moving blade 7 from causing damage to equipment and personnel after breakage.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A fatigue performance simulation testing device for wind turbine blades, comprising a base plate (1), characterized in that, A fixing plate (8), a second motor (9) and a rear slide rail (11) are fixedly connected to the upper surface of one end of the base plate (1). A blade (7) is fixedly connected to one side of the fixing plate (8). A front slide rail (2) is fixedly connected to the upper surface of the other end of the base plate (1). A second slider (22) and a third slider (25) are slidably connected to the top of the rear slide rail (11). The third slider (25) is equipped with a connecting mechanism, which includes a locking block (29) and a connecting rod (24). The bottom of the locking block (29) is provided with a locking plate (31). One end of the connecting rod (24) is provided with multiple slots (30). By controlling the locking plate (31) to be locked inside the slots (30), the third slider (25) and the second slider (22) are connected together by the connecting rod (24). A clamping mechanism is installed at one end of the blade (7). The clamping mechanism includes an outer rope (15), an inner rope (16), and a pull plate (14). The pull plate (14) is provided with an outer groove (40) and an inner groove (41). By pulling the outer rope (15) and the inner rope (16) through the pull plate (14), one end of the blade (7) is pulled, causing the blade (7) to bend. An adjustment mechanism is installed on the top of the front slide rail (2). The adjustment mechanism has a first slider (20) and a pull block (13). A connecting rope (6) is fixedly connected to one side of the pull block (13). A sliding plate (3) is fixedly connected to the upper surface of the first slider (20). By controlling the position of the first slider (20) and simultaneously using the sliding of the pull block (13), the blade (7) can be pulled in different directions. A safety mechanism is installed at one end of the slide plate (3). The safety mechanism includes a pin (37) and a fixing hole (39). By sliding the pull block (13), the pin (37) is driven to insert into the fixing hole (39), so that the pull block (13) stops moving.

2. The fatigue performance simulation and testing equipment for wind turbine blades according to claim 1, characterized in that, The connecting mechanism also includes a fourth motor (27) disposed on the top of the third slider (25). One end of the output shaft of the fourth motor (27) is fixedly connected to a third screw (28). The third screw (28) is threadedly connected to the locking block (29). The connecting rod (24) is slidably connected to the third slider (25). The other end of the connecting rope (6) is fixedly connected to the third slider (25). One side of the second slider (22) is fixedly connected to a third motor (21). One end of the output shaft of the third motor (21) is fixedly connected to a second screw (23). The other side of the second slider (22) is rotatably connected to a linkage plate (26). The linkage plate (26) is rotatably connected to one side of the turntable (10). One end of the second screw (23) is threadedly connected to the third slider (25).

3. The fatigue performance simulation testing equipment for wind turbine blades according to claim 2, characterized in that, The card block (29) is inside the third slider (25) and is slidably connected to the third slider (25). The distance between the multiple card slots (30) is the same. The bottom edge of the card plate (31) is inverted trapezoidal. The width of the card plate (31) is smaller than the width of the card slot (30). One end of the output shaft of the second motor (9) is fixedly connected to a turntable (10).

4. The fatigue performance simulation and testing equipment for wind turbine blades according to claim 3, characterized in that, The clamping mechanism also includes a straight plate (17) that is fixedly connected to the third slider (25) and the inner rope (16) respectively. A plurality of bolts (18) are inserted into one side of the straight plate (17), and a bent plate (19) is threaded to one end of the bolts (18). The straight plate (17) and the bent plate (19) clamp one end of the blade (7) in the middle.

5. The fatigue performance simulation testing equipment for wind turbine blades according to claim 4, characterized in that, The outer rope (15) slides inside the outer groove (40), the inner rope (16) slides inside the inner groove (41), the pull plate (14) and the pull block (13) are rotatably connected, the upper surface of the slide plate (3) is provided with a motion groove (38), and the pull block (13) slides inside the motion groove (38).

6. The fatigue performance simulation and testing equipment for wind turbine blades according to claim 5, characterized in that, The adjustment mechanism also includes a first motor (4) fixedly connected to one end of the rear slide rail (11), a first screw (12) at one end of the output shaft of the first motor (4), the first screw (12) being threadedly connected to the first slider (20), and an auxiliary wheel (5) being rotatably connected to the upper surface of the slide plate (3).

7. The fatigue performance simulation and testing equipment for wind turbine blades according to claim 6, characterized in that, The auxiliary wheel (5) has a groove on its outer wall. The connecting rope (6) contacts the groove and pulls the pull block (13) through the connecting rope (6), thereby causing the blade (7) to deflect. The auxiliary wheel (5) plays the role of tensioning the connecting rope (6).

8. The fatigue performance simulation and testing equipment for wind turbine blades according to claim 7, characterized in that, The safety mechanism also includes a slide rod (33) slidably connected to one end of the slide plate (3), a spring (32) is sleeved on one end of the slide rod (33), a pressure block (34) is fixedly connected to the other end of the slide rod (33), and a rotating plate (35) is rotatably connected to one end of the slide plate (3) near the pressure block (34).

9. The fatigue performance simulation and testing equipment for wind turbine blades according to claim 8, characterized in that, One end of the rotating plate (35) is provided with a groove (36), the other end of the rotating plate (35) is provided with an angle, and a pin (37) is slidably connected to one end of the sliding plate (3) near the groove (36).

10. The fatigue performance simulation testing equipment for wind turbine blades according to claim 9, characterized in that, One end of the pin (37) is provided with a guide rod, which slides inside the groove (36).

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