Bird repelling device and method for wind turbine

Abstract

The present application relates to the technical field of wind power generation, in particular to a wind turbine bird repelling device and a bird repelling method, which comprises a moving seat, a wind cavity is formed in the moving seat, a circular cavity and a cavity are respectively formed on the upper sides of the wind cavity, a sound emitting mechanism is arranged between the circular cavity and the cavity, the sound emitting mechanism comprises a lifting plate which is coaxially and slidingly connected in the circular cavity, a connecting groove is formed between the lower parts of the circular cavity and the cavity, a plurality of steel balls are arranged on the bottom surface of the cavity, a plurality of hollow metal rods are fixedly arranged on the upper part of the cavity, the plurality of hollow metal rods are randomly arranged in the cavity, a driving mechanism is arranged in the wind cavity, the driving mechanism drives the lifting plate to descend, a guide mechanism is arranged below the moving seat, and the guide mechanism limits the moving direction of the moving seat. The present application can emit more variable bird repelling sounds, can effectively improve the bird repelling effect, can improve the flexibility of the device, can reduce the labor of the staff for regularly updating the bird repelling sound, is ingenious in design, and is high in practicability.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, specifically to a bird deterrent device and method for wind turbines. Background Technology

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives a rotor to rotate and ultimately outputs alternating current. The working principle of a wind turbine is relatively simple: the wind turbine rotates under the action of wind, converting the kinetic energy of the wind into the mechanical energy of the wind turbine shaft. The generator rotates under the drive of the wind turbine shaft to generate electricity. Wind turbines are generally set up in open plains or mountains. In order to make better use of wind energy, areas with fewer trees are usually chosen. This makes the flat top surface of the wind turbine a preferred nesting location for birds in the area.

[0003] Most current bird deterrence methods rely on sound and light, but existing sound and light bird deterrence devices have certain regularity. Due to geographical limitations, the bird deterrence devices on wind turbines cannot be updated frequently. As a result, birds will become accustomed to the sound and light methods set on wind turbines after long-term use and gradually judge that there is no danger, which cannot achieve a long-term bird deterrence effect. In view of this, the present invention proposes a wind turbine bird deterrence device and bird deterrence method. Summary of the Invention

[0004] Technical problems to be solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a bird deterrent device and method for wind turbines, which can effectively solve the problems in the prior art.

[0006] Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] This invention provides a bird deterrent device and method for wind turbine generators, including a movable base with a wind cavity inside. A circular cavity and a hollow cavity are respectively opened on both sides above the wind cavity. A sound-generating mechanism is provided between the circular cavity and the hollow cavity, and the sound-generating mechanism emits irregular sounds.

[0009] The sound-generating mechanism includes a lifting plate that is coaxially and slidably connected inside the circular cavity. A connecting groove is provided between the circular cavity and the lower part of the hollow cavity. Multiple steel balls are provided on the bottom surface of the hollow cavity. Multiple hollow metal rods are fixedly provided on the upper part of the hollow cavity. The multiple hollow metal rods are randomly arranged and fixed inside the hollow cavity. The diameters of the hollow metal rods are all different. The distance between any two hollow metal rods is greater than the diameter of the steel balls.

[0010] The air cavity is equipped with a drive mechanism, which drives the lifting plate to descend.

[0011] A guide mechanism is provided below the movable seat, which restricts the direction of movement of the movable seat.

[0012] Preferably, a through groove is formed between the top surface of the cavity and the top surface of the circular cavity. The through groove has an inverted U-shaped structure. A plate groove is formed at the opening end of the connecting groove near the circular cavity. A partition is elastically connected to the bottom surface of the plate groove by multiple first support springs. The height of the partition is equal to the height of the lifting plate. The bottom surface of the cavity has an inclined structure. A lever is fixed at the lower end of one side wall of the partition near the circular cavity. An extrusion groove is formed on the bottom surface of the lifting plate to press against the lever. Multiple protrusions are coaxially provided on the hollow metal rod. All of the protrusions are hollow annular structures with different diameters.

[0013] Preferably, a sliding rod is coaxially fixedly connected to the bottom surface of the lifting plate, and the sliding rod is slidably connected to the bottom surface of the circular cavity. The driving mechanism includes a turntable, and multiple arc-shaped plates are fixedly arranged in an annular, equally spaced structure on the outer wall of the turntable. The outer ends of the arc-shaped plates slide in contact with the inner wall of the air cavity. The front opening end of the air cavity corresponds to the arc-shaped plate near the cavity side. An air outlet is provided at the rear of the air cavity. The air outlet is perpendicular to the air cavity. The upper and lower opening ends of the air outlet are respectively located on the upper and lower outer walls of the moving seat. The upper and lower ends of the turntable are rotatably connected to the upper and lower inner walls of the air cavity, respectively. A rod groove that slides with the sliding rod is coaxially provided in the middle of the turntable.

[0014] Preferably, the bottom surface of the air cavity has a bottom groove coaxial with the rod groove. Two compression springs are symmetrically fixed between the bottom surface of the slide rod and the bottom surface of the bottom groove. An extrusion block is fixed on the inner wall of the rod groove. A spiral groove is formed on the slide rod. The extrusion block has a hemispherical structure and slides in cooperation with the spiral groove. A vertical groove that slides in cooperation with the extrusion block is formed between the upper and lower ends of the spiral groove. Two rotating plates are symmetrically provided on the lower side of the multiple junctions of the spiral groove and the vertical groove, except at the junctions of the upper and lower ends. The outer end of the rotating plate is rotatably connected to the slide rod through a rotating shaft. A shaft groove that rotates in cooperation with the rotating shaft is formed on the slide rod. The end of the shaft groove away from the rotating plate has a T-shaped cylindrical structure. A coil spring is coaxially sleeved on the end of the rotating shaft away from the rotating plate. The outer end of the coil spring is connected and fixed to the inner wall of the shaft groove.

[0015] Preferably, a limiting block is provided above the junction of the spiral groove and the lowest point of the vertical groove. A block groove is opened at the lower end of the inner wall of the vertical groove to slide with the limiting block. A compression spring is fixed between the rear wall of the limiting block and the rear wall of the block groove. The top surface of the limiting block is a sloping structure with a lower front and a higher rear. The bottom surface of the limiting block is an arc surface structure and slides in contact with the outer wall of the compression block. A limiting rod is fixed in the middle of the bottom surface of the bottom groove. A limiting groove is opened on the bottom surface of the sliding rod to slide with the limiting rod. Both the limiting rod and the limiting groove are cuboid structures. An inner cavity is opened on one side of the outer wall of the limiting rod. A fixing plate is provided at the opening end of the side wall of the inner cavity.

[0016] Preferably, a plurality of second support springs are fixed between the side wall of the fixed plate and the inner wall of the inner cavity. A plurality of locking blocks are uniformly fixed on the outer wall of the fixed plate near the opening end of the inner cavity. The top surface of the locking blocks is a sloping structure. A side groove is opened on the inner wall of the limiting groove. A locking plate is hinged to the bottom surface of the side groove away from the limiting rod through a hinge shaft. A plurality of torsion springs are sleeved on the hinge shaft. The bottom surface of the locking plate is a sloping structure near the limiting rod. Two insert rods are symmetrically slidably connected on the side of the inner cavity away from the locking plate. The lower end of the insert rod is a sloping structure. A circular plate is fixed between the upper ends of the two insert rods. A circular groove is opened on the upper part of the limiting groove to slide with the circular plate.

[0017] Preferably, a pressing plate is fixedly provided at the lower end of the side wall away from the insertion rod of the fixing plate. The top surface of the pressing plate is a sloping structure and is pressed and fitted with the bottom surface of the sliding rod. A base plate is fixedly provided at the lower end of the side wall of the fixing plate near the insertion rod. The top surface of the base plate near the insertion rod is a sloping structure and fits against the sloping part of the lower end of the insertion rod. A slot is opened on the top surface of the base plate near the fixing plate. The lower end of the insertion rod is inserted into the slot. When the bottom surface of the circular plate fits against the bottom surface of the circular groove, the bottom surfaces of the two insertion rods are higher than the top surface of the base plate. When the bottom surface of the circular plate fits against the top surface of the limiting rod, the lower ends of the two insertion rods fit against the bottom surface of the inner cavity.

[0018] Preferably, the guiding mechanism includes a base, on which multiple pillars are fixedly mounted. The base is a rectangular ring structure with semi-circular ends. The top surface of the base is at its lowest point relative to the movable seat. The top surface of the base is generally inclined with a lower front and higher back. A sliding seat is slidably connected to the base. The sliding seat is fixedly connected to the movable seat. The sliding seat has a U-shaped structure. Four rollers are symmetrically rotatably connected to the inner wall of the sliding seat. The base has guide grooves that make rolling contact with the rollers.

[0019] Preferably, an axle is coaxially connected between the two rollers located at the top, and a ratchet is coaxially fixedly connected to the middle of the axle. The sliding seat has a groove inside that rotates with the ratchet. A pawl that meshes with the ratchet is hinged to the inner wall of the groove. A return spring is fixed between the side wall of the pawl and the inner wall of the groove. The front wall of the moving seat has an arc-shaped concave structure, and the rear wall of the moving seat has a convex triangular prism structure.

[0020] A method for repelling birds using a wind turbine bird deterrent device, comprising the following steps:

[0021] S1. Fix the base to the top of the wind turbine;

[0022] S2. Strong winds at high altitudes pass through the air chamber and are driven by the mechanism to cause the slide bar to move downwards;

[0023] S3. After the slider moves to the lowest point, the restriction of the drive mechanism will be released, and the stored force will be released to make the slider spring back.

[0024] S4. As the sliding rod rebounds, the lifting plate throws a large number of steel balls into the through groove. The steel balls pass through the through groove into the cavity and randomly collide with multiple hollow metal rods and protrusions on the hollow metal rods, thus producing irregular bird-repelling sounds.

[0025] Beneficial effects

[0026] The technical solution provided by this invention has the following advantages compared with the prior art:

[0027] 1. This invention is equipped with a sound-generating mechanism. Through multiple hollow metal rods of different diameters and randomly positioned, and multiple protrusions of different diameters and randomly positioned on each hollow metal rod, the steel ball will produce a continuous sound with different tones in a random combination when it collides with these hollow metal rods and protrusions. This can produce more varied bird-repelling sounds, which not only effectively improves the bird-repelling effect, but also increases the flexibility of the device and reduces the labor of staff to update the bird-repelling sounds regularly. The design is ingenious and highly practical.

[0028] 2. The present invention is equipped with a drive mechanism, which allows the device to make better use of natural resources and drive its operation by the strong wind at high altitudes. This not only greatly reduces energy consumption, but also because the friction of the air at high altitudes is particularly small, and the wind force is relatively greater, giving the device a more stable drive source. Furthermore, the ever-changing wind force allows the bird-repelling sound of the device to be emitted randomly at different time intervals, further improving the bird-repelling effect.

[0029] 3. The present invention is equipped with a guiding mechanism, which enables the device to rotate on the top surface of the wind turbine. The speed of each rotation is affected by the initial speed provided by the wind, and the wind also affects the time taken for each rotation. This allows the device to simulate the effect of human patrol, further enhancing the bird-repelling effect of the device. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the front section structure of the present invention;

[0033] Figure 3 This is a cross-sectional view of the hollow metal rod of the present invention;

[0034] Figure 4 This is a schematic diagram of the internal structure of the movable seat of the present invention;

[0035] Figure 5 This is a schematic diagram of the drive mechanism structure of the present invention;

[0036] Figure 6 This is a schematic cross-sectional view of the slide bar structure of the present invention;

[0037] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle;

[0038] Figure 8 This is a schematic diagram of the internal structure of the limiting rod of the present invention;

[0039] Figure 9 This is a schematic cross-sectional view of the sliding seat structure of the present invention;

[0040] Figure 10 This is a cross-sectional view of the base structure of the present invention.

[0041] The labels in the diagram represent: 1. Moving seat; 2. Air cavity; 3. Circular cavity; 4. Hollow cavity; 5. Sound-generating mechanism; 6. Lifting plate; 7. Connecting groove; 8. Support column; 9. Steel ball; 10. Hollow metal rod; 11. Protrusion; 12. Drive mechanism; 13. Guide mechanism; 14. Through groove; 15. Plate groove; 16. First support spring; 17. Partition plate; 18. Paddle plate; 19. Extrusion groove; 20. Slide rod; 21. Turntable; 22. Arc plate; 23. Air outlet; 24. Rod groove; 25. Bottom groove; 26. Compression spring; 27. Extrusion block; 28. Spiral groove; 29. ​​Vertical groove; 30. Rotating plate 31. Rotating shaft; 32. Shaft groove; 33. Coil spring; 34. Limiting block; 35. Block groove; 36. Compression spring; 37. Limiting rod; 38. Limiting groove; 39. Inner cavity; 40. Fixing plate; 41. Second support spring; 42. Locking block; 43. Side groove; 44. Hinge shaft; 45. Locking plate; 46. Torsion spring; 47. Insert rod; 48. Round plate; 49. Round groove; 50. Compression plate; 51. Base plate; 52. Slot; 53. Base; 54. Sliding seat; 55. Roller; 56. Guide groove; 57. Wheel axle; 58. Ratchet; 59. Wheel groove; 60. Pawl; 61. Return spring. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0043] like Figures 1-10As shown, the wind turbine bird-repelling device and method of the present invention includes a movable base 1, with a wind cavity 2 inside the movable base 1. A circular cavity 3 and a hollow cavity 4 are respectively opened on both sides above the wind cavity 2. A sound-generating mechanism 5 is provided between the circular cavity 3 and the hollow cavity 4, emitting irregular sounds. The sound-generating mechanism 5 includes a lifting plate 6 coaxially and slidably connected inside the circular cavity 3. A connecting groove 7 is provided between the lower parts of the circular cavity 3 and the hollow cavity 4. Multiple steel balls 9 are provided on the bottom surface of the hollow cavity 4. Multiple hollow metal rods 10 are fixedly installed on the upper part of the hollow cavity 4. The multiple hollow metal rods 10 are randomly arranged and fixed inside the hollow cavity 4. The diameters of the hollow metal rods 10 are all different. Any two hollow metal rods 10... The spacing between the 0s is larger than the diameter of the steel ball 9. A through groove 14 is provided between the top surface of the cavity 4 and the top surface of the circular cavity 3. The through groove 14 has an inverted U-shaped structure. A plate groove 15 is provided at the opening end of the connecting groove 7 near the circular cavity 3. A partition 17 is elastically connected to the bottom surface of the plate groove 15 by multiple first support springs 16. The height of the partition 17 is equal to the height of the lifting plate 6. The bottom surface of the cavity 4 has a sloping structure. A lever 18 is fixed at the lower end of one side wall of the partition 17 near the circular cavity 3. A pressing groove 19 is provided on the bottom surface of the lifting plate 6 to press and cooperate with the lever 18. Multiple protrusions 11 are coaxially provided on the hollow metal rod 10. The multiple protrusions 11 are all hollow ring structures and have different diameters.

[0044] A sliding rod 20 is coaxially fixedly connected to the bottom surface of the lifting plate 6. The sliding rod 20 is slidably connected to the bottom surface of the circular cavity 3. A drive mechanism 12 is provided inside the air cavity 2. The drive mechanism 12 drives the lifting plate 6 to descend. The drive mechanism 12 includes a turntable 21. The outer wall of the turntable 21 has a ring-shaped structure with multiple arc-shaped plates 22 fixedly arranged at equal intervals. The outer ends of the arc-shaped plates 22 slide in contact with the inner wall of the air cavity 2. The front opening end of the air cavity 2 corresponds to the arc-shaped plate 22 on the side near the cavity 4. An air outlet 23 is opened at the rear of the air cavity 2. The air outlet 23 is perpendicular to the air cavity 2. The upper and lower opening ends of the air outlet 23 are located on the upper and lower outer walls of the moving seat 1, respectively. The upper and lower ends of the turntable 21 are rotatably connected to the upper and lower inner walls of the air cavity 2, respectively. A sliding engagement mechanism with the sliding rod 20 is opened coaxially in the middle of the turntable 21. The bottom surface of the rod groove 24 and the air cavity 2 has a bottom groove 25 coaxial with the rod groove 24. Two compression springs 26 are symmetrically fixed between the bottom surface of the slide rod 20 and the bottom surface of the bottom groove 25. An extrusion block 27 is fixed on the inner wall of the rod groove 24. A spiral groove 28 is opened on the slide rod 20. The extrusion block 27 has a hemispherical structure and slides in cooperation with the spiral groove 28. A vertical groove 29 that slides in cooperation with the extrusion block 27 is opened between the upper and lower ends of the spiral groove 28. Two rotating plates 30 are symmetrically provided on the lower side of the multiple junctions between the spiral groove 28 and the vertical groove 29, except at the junction of the upper and lower ends. The outer end of the rotating plate 30 is rotatably connected to the slide rod 20 through a rotating shaft 31. A shaft groove 32 that rotatably cooperates with the rotating shaft 31 is opened on the slide rod 20. The end of the shaft groove 32 away from the rotating plate 30 has a T-shaped cylindrical structure. A coil spring 33 is coaxially sleeved at one end away from the rotating plate 30. The outer end of the coil spring 33 is connected and fixed to the inner wall of the shaft groove 32. A limiting block 34 is provided above the junction of the lowest end of the spiral groove 28 and the vertical groove 29. A block groove 35 is opened at the lower end of the inner wall of the vertical groove 29 to slide with the limiting block 34. A compression spring 36 is fixed between the rear wall of the limiting block 34 and the rear wall of the block groove 35. The top surface of the limiting block 34 is a sloping structure with a lower front and a higher rear. The bottom surface of the limiting block 34 is an arc structure and slides in contact with the outer wall of the compression block 27. A limiting rod 37 is fixed in the middle of the bottom surface of the bottom groove 25. A limiting groove 38 is opened on the bottom surface of the sliding rod 20 to slide with the limiting rod 37. Both the limiting rod 37 and the limiting groove 38 are cuboid structures. An inner cavity 39 is opened on one side of the outer wall of the limiting rod 37. The side wall of the inner cavity 39 is opened with A fixing plate 40 is provided at the opening end. Multiple second support springs 41 are fixed between the side wall of the fixing plate 40 and the inner wall of the inner cavity 39. Multiple locking blocks 42 are evenly fixed on the outer wall of the fixing plate 40 near the opening end of the inner cavity 39. The top surface of the locking blocks 42 is a sloping structure. A side groove 43 is opened on the inner wall of the limiting groove 38. A locking plate 45 is hinged to the bottom surface of the side groove 43 away from the limiting rod 37 through a hinge shaft 44. Multiple torsion springs 46 are sleeved on the hinge shaft 44. The bottom surface of the locking plate 45 is a sloping structure near the limiting rod 37. Two insert rods 47 are symmetrically slidably connected on the side of the inner cavity 39 away from the locking plate 45. The lower end of the insert rod 47 is a sloping structure. A circular plate 48 is fixed between the upper ends of the two insert rods 47. A circular groove 49 is opened on the upper part of the limiting groove 38 to slide with the circular plate 48.A pressing plate 50 is fixedly installed at the lower end of the side wall of the fixed plate 40 away from the insertion rod 47. The top surface of the pressing plate 50 is inclined and presses against the bottom surface of the slide rod 20. A base plate 51 is fixedly installed at the lower end of the side wall of the fixed plate 40 near the insertion rod 47. The top surface of the base plate 51 near the insertion rod 47 is inclined and fits against the inclined part at the lower end of the insertion rod 47. A slot 52 is opened on the top surface of the base plate 51 near the fixed plate 40. The lower end of the insertion rod 47 is inserted into the slot 52. When the bottom surface of the circular plate 48 is in contact with the bottom surface of the circular groove 49, the bottom surfaces of the two insertion rods 47 are higher than the top surface of the base plate 51. When the bottom surface of the circular plate 48 is in contact with the top surface of the limiting rod 37, the lower ends of the two insertion rods 47 are in contact with the bottom surface of the inner cavity 39.

[0045] A guide mechanism 13 is provided below the movable seat 1. The guide mechanism 13 restricts the movement direction of the movable seat 1. The guide mechanism 13 includes a base 53, on which multiple support columns 8 are fixedly mounted. The base 53 is a rectangular ring structure with semi-circular ends. The top surface of the base 53 is at its lowest point relative to the movable seat 1. The top surface of the base 53 is generally inclined with a lower front and higher back. A sliding seat 54 is slidably connected to the base 53. The sliding seat 54 is connected and fixed to the movable seat 1. The sliding seat 54 has a U-shaped structure, and its inner wall is symmetrically rotatably connected to... Four rollers 55 are provided. A guide groove 56 is provided on the base 53 for the rollers 55 to roll in contact. A wheel axle 57 is coaxially connected between the two upper rollers 55. A ratchet 58 is coaxially fixedly connected in the middle of the wheel axle 57. A wheel groove 59 is provided inside the sliding seat 54 to rotate with the ratchet 58. A pawl 60 is hinged to the inner wall of the wheel groove 59 to engage with the ratchet 58. A return spring 61 is fixed between the side wall of the pawl 60 and the inner wall of the wheel groove 59. The front wall of the moving seat 1 is an arc-shaped concave structure, and the rear wall of the moving seat 1 is a convex triangular prism structure.

[0046] Working principle: The staff can fix this device to the top surface of the wind turbine through the support column 8. It should be noted that the concave surface of the moving base 1 should be aligned with the direction of the wind turbine rotor so that the strong wind at high altitude can directly act on the concave surface of the moving base 1. After fixing, the device can operate on its own.

[0047] As the wind blows on this device, the movable seat 1 moves along the top surface of the base 53. Due to the restriction of the ratchet 58 and pawl 60, the upper roller 55 and axle 57 can only rotate in the same direction. Therefore, the movable seat 1 can only rotate in one direction along the base 53. The roller 55 and guide groove 56 in this device are set to fit very closely, and both surfaces are made of a material with high friction. Therefore, there will be no relative movement when the upper roller 55 cannot rotate. The base 53 of this device is set with a lower front and a higher back. The path of its top surface will cause the movable seat 1 to move backward and rise first. When it reaches the starting point of the rear curve, the moving seat 1 only needs the wind to give it a final push to enter the curve. Then the moving seat 1 will slide down the curve and move in a U-shape to the straight part on the other side of the top surface of the base 53. This straight part is also lower in the front and higher in the back, so the moving seat 1 will still move forward under gravity. The front wall of the moving seat 1 is set as a triangular prism structure so it is not easily obstructed by the wind. The front curve of the base 53 is also inclined. After entering the curve, the moving seat 1 will move in a U-shape again and return to its original straight path, that is, return to the original position and wait for the wind to push it uphill again to the rear curve.

[0048] During movement, the wind acting on the moving seat 1 also enters the air cavity 2. The front opening of the air cavity 2 corresponds to multiple arc-shaped plates 22 near the side of the cavity 4. When the arc-shaped plates 22 rotate to the side of the turntable 21, their concave surfaces face forward. The height and diameter of the air cavity are adapted to the arc-shaped plates 22. In this way, the wind force can act well on the arc-shaped plates 22 and further drive the turntable 21 to rotate. The wind that pushes the turntable 21 to rotate will pass through the air cavity 2 and enter the air outlet 23. Then, due to the special structural design of the air outlet 23, it can only be discharged from the upper and lower sides of the moving seat 1. In this way, this part of the wind force can also be converted into a force that pushes the moving seat 1 forward.

[0049] The rotation of turntable 21 causes the pressing block 27 fixed on its inner wall to press against the inner wall of spiral groove 28. Under this action, sliding rod 20 will descend and the compression spring 26 fixed between its bottom surface and bottom groove 25 will be compressed. Because the sliding rod 20 is restricted by the sliding engagement between limiting rod 37 and limiting groove 38, it will not rotate. The sliding rod 20 can only move vertically downward. During the descent, the locking plate 45 in the inner wall side groove 43 will contact multiple locking blocks 42 one by one. First, it will flip up under the pressure of the inclined surface of the top surface of the locking block 42. When it moves to the lower part after passing the locking block 42, it will be returned to its original position by the action of torsion spring 46. Then, the plane of the top surface of the locking plate 45 will be flush with the plane of the bottom surface of the locking block 42. The sliding rod 20 is fitted together, thus limiting its rebound. When the sliding rod 20 moves to its lowest point within its movable range, the extrusion groove 19 presses down on the deflector plate 18, causing the partition plate 17 to move down and open the connecting groove 7. Subsequently, a large number of steel balls 9 in the cavity 4 will roll towards the opening end of the connecting groove 7 in the circular cavity 3 under the guidance of the inclined structure on the bottom surface of the cavity 4, and finally roll onto the lifting plate 6. The top surface of the lifting plate 6 is designed with a small indentation to facilitate the steel balls 9 to concentrate on the lifting plate 6 and not bounce back into the cavity 4. On the other hand, the bottom surface of the sliding rod 20 will exert downward pressure on the inclined surface of the top surface of the extrusion plate 50. Before this, due to the descent of the sliding rod 20, the position of the circular plate 48 will not be affected by the circular groove. The bottom surface of the 49 is lifted, and the bottom surface of the insertion rod 47 will also fit against the bottom surface of the inner cavity 39. When the pressing plate 50 moves into the inner cavity 39 under downward pressure, the bottom plate 51 will first use its inclined part to press and lift the lower inclined surface of the insertion rod 47. Then, when the slot 52 on the bottom plate 51 corresponds to the insertion rod 47, the insertion rod 47 will fall under the action of gravity and engage with the slot 52. This will then restrict the position of the fixing plate 40, preventing the second support spring 41 from causing the fixing plate 40 to rebound. Then, the locking plate 45 loses the restriction of the locking block 42, and the sliding rod 20 will no longer be hindered from rebounding. It will then bounce vertically upward under the rebound force of the compression spring 26, and the lifting plate 6 will also spring up quickly. The ball springs up quickly, causing a large number of steel balls 9 to be thrown into the through groove 14 during this rapid upward movement. Then, guided by the U-shaped structure on the top surface of the through groove 14, the movement direction of the steel balls 9 is guided, causing them to fall directly into the cavity 4. During this process, the extrusion block 27 slides in contact with the vertical groove 29. Finally, it will retract into the block groove 35 by extruding the top surface of the limiting block 34. When the extrusion block 27 aligns with the lower end of the spiral groove 28 again, the limiting block 34 will pop out again under the action of the extrusion spring 36 and block the lower opening end of the vertical groove 29, preventing the extrusion block 27 from directly entering the vertical groove 29 during the initial rotation.

[0050] It should be noted that during the process of the turntable 21 rotating and the slide bar 20 descending, the extrusion block 27 will pass through the junction of each vertical groove 29 and the spiral groove 28 one by one. When passing through this junction, the extrusion block 27 will extrude pressure on the two rotating plates 30, causing them to rotate and block the openings of the upper and lower vertical grooves 29 at the junction of the vertical groove 29 and the spiral groove 28, preventing the extrusion block 27 from sliding directly into the vertical groove 29 at the junction of the vertical groove 29 and the spiral groove 28.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bird deterrent device for a wind turbine, comprising a movable base (1), characterized in that: The movable seat (1) has an air cavity (2) inside. A circular cavity (3) and a hollow cavity (4) are respectively opened on the upper sides of the air cavity (2). A sound-generating mechanism (5) is provided between the circular cavity (3) and the hollow cavity (4). The sound-generating mechanism (5) emits irregular sounds. The sound-generating mechanism (5) includes a lifting plate (6) that is coaxially slidably connected inside the circular cavity (3). A connecting groove (7) is provided between the lower part of the circular cavity (3) and the cavity (4). A plurality of steel balls (9) are provided on the bottom surface of the cavity (4). A plurality of hollow metal rods (10) are fixed on the upper part of the cavity (4). The plurality of hollow metal rods (10) are randomly arranged and fixed inside the cavity (4). The diameters of the hollow metal rods (10) are all different. The distance between any two hollow metal rods (10) is greater than the diameter of the steel ball (9). The air cavity (2) is equipped with a drive mechanism (12), which drives the lifting plate (6) to descend; A guide mechanism (13) is provided below the movable seat (1), and the guide mechanism (13) restricts the movement direction of the movable seat (1); A through groove (14) is provided between the top surface of the cavity (4) and the top surface of the circular cavity (3). The through groove (14) is an inverted U-shaped structure. A plate groove (15) is provided at the opening end of the connecting groove (7) near the circular cavity (3). A partition plate (17) is elastically connected to the bottom surface of the plate groove (15) by multiple first support springs (16). The height of the partition plate (17) is equal to the height of the lifting plate (6). The bottom surface of the cavity (4) is a sloping structure. A lever plate (18) is fixed at the lower end of one side wall of the partition plate (17) near the circular cavity (3). An extrusion groove (19) is provided on the bottom surface of the lifting plate (6) to press and cooperate with the lever plate (18). Multiple protrusions (11) are coaxially provided on the hollow metal rod (10). All of the protrusions (11) are hollow ring structures and have different diameters. The bottom surface of the lifting plate (6) is coaxially fixedly connected to a sliding rod (20). The sliding rod (20) is coaxially slidably connected to the bottom surface of the circular cavity (3). The driving mechanism (12) includes a turntable (21). The outer wall of the turntable (21) is fixedly provided with multiple arc-shaped plates (22) in an annular and equally spaced structure. The outer end of the arc-shaped plate (22) slides in contact with the inner wall of the air cavity (2). The front opening end of the air cavity (2) corresponds to the arc-shaped plate (22) on the side close to the cavity (4). The rear part of the air cavity (2) is provided with an air outlet (23). The air outlet (23) is perpendicular to the air cavity (2). The upper and lower opening ends of the air outlet (23) are respectively located on the upper and lower outer walls of the moving seat (1). The upper and lower ends of the turntable (21) are rotatably connected to the upper and lower inner walls of the air cavity (2). The middle part of the turntable (21) is coaxially provided with a rod groove (24) that slides with the sliding rod (20).

2. The bird deterrent device for wind turbines according to claim 1, characterized in that: The bottom surface of the air cavity (2) is provided with a bottom groove (25) coaxial with the rod groove (24). Two compression springs (26) are symmetrically fixed between the bottom surface of the slide rod (20) and the bottom surface of the bottom groove (25). An extrusion block (27) is fixed on the inner wall of the rod groove (24). A spiral groove (28) is provided on the slide rod (20). The extrusion block (27) is a hemispherical structure and slides with the spiral groove (28). A vertical groove (29) is provided between the upper and lower ends of the spiral groove (28) and slides with the extrusion block (27). Two rotating plates (30) are symmetrically provided on the lower side of multiple junctions with the vertical groove (29) except for the junctions at the upper and lower ends. The outer end of the rotating plate (30) is rotatably connected to the slide rod (20) through the rotating shaft (31). The slide rod (20) is provided with a shaft groove (32) that rotatably cooperates with the rotating shaft (31). The end of the shaft groove (32) away from the rotating plate (30) is a T-shaped cylindrical structure. The end of the rotating shaft (31) away from the rotating plate (30) is coaxially sleeved with a coil spring (33). The outer end of the coil spring (33) is connected and fixed to the inner wall of the shaft groove (32).

3. The wind turbine bird deterrent device according to claim 2, characterized in that: A limiting block (34) is provided above the junction of the spiral groove (28) and the vertical groove (29). A block groove (35) that slides with the limiting block (34) is provided at the lower end of the inner wall of the vertical groove (29). A compression spring (36) is fixed between the rear wall of the limiting block (34) and the rear wall of the block groove (35). The top surface of the limiting block (34) is a sloping structure with a lower front and a higher back. The bottom surface of the limiting block (34) is an arc surface structure and slides in contact with the outer wall of the extrusion block (27). A limiting rod (37) is fixed in the middle of the bottom surface of the bottom groove (25). A limiting groove (38) that slides with the limiting rod (37) is provided on the bottom surface of the sliding rod (20). Both the limiting rod (37) and the limiting groove (38) are cuboid structures. An inner cavity (39) is provided on one side of the outer wall of the limiting rod (37). A fixing plate (40) is provided at the opening end of the side wall of the inner cavity (39).

4. The wind turbine bird deterrent device according to claim 3, characterized in that: Multiple second support springs (41) are fixed between the side wall of the fixed plate (40) and the inner wall of the inner cavity (39). Multiple locking blocks (42) are uniformly fixed on the outer wall of the fixed plate (40) near the opening end of the inner cavity (39). The top surface of the locking block (42) is a sloping structure. A side groove (43) is opened on the inner wall of the limiting groove (38). A locking plate (45) is hinged to the bottom surface of the side groove (43) away from the limiting rod (37) through a hinge shaft (44). Multiple torsion springs (46) are sleeved on the hinge shaft (44). The bottom surface of the clamping plate (45) near the limiting rod (37) is a sloping structure. Two insert rods (47) are symmetrically slidably connected on the side of the inner cavity (39) away from the clamping plate (45). The lower end of the insert rod (47) is a sloping structure. A circular plate (48) is fixed between the upper ends of the two insert rods (47). A circular groove (49) is opened on the upper part of the limiting groove (38) to slide with the circular plate (48).

5. The wind turbine bird deterrent device according to claim 4, characterized in that: A pressing plate (50) is fixedly provided on the lower end of the side wall away from the insert rod (47) of the fixed plate (40). The top surface of the pressing plate (50) is a sloping structure and is pressed and matched with the bottom surface of the slide rod (20). A base plate (51) is fixedly provided on the lower end of the side wall of the fixed plate (40) near the insert rod (47). The top surface of the base plate (51) near the insert rod (47) is a sloping structure and is attached to the sloping part of the lower end of the insert rod (47). A slot (52) is opened on the top surface of the base plate (51) near the fixed plate (40). The lower end of the insert rod (47) is inserted and matched with the slot (52). When the bottom surface of the circular plate (48) is attached to the bottom surface of the circular groove (49), the bottom surfaces of the two insert rods (47) are higher than the top surface of the base plate (51). When the bottom surface of the circular plate (48) is attached to the top surface of the limiting rod (37), the lower ends of the two insert rods (47) are attached to the bottom surface of the inner cavity (39).

6. The wind turbine bird deterrent device according to claim 5, characterized in that: The guiding mechanism (13) includes a base (53), on which multiple pillars (8) are fixedly mounted. The base (53) is a rectangular ring structure with semi-circular ends. The position of the top surface of the base (53) relative to the moving seat (1) is the lowest point. The top surface of the base (53) is set in an inclined structure with the front lower and the back higher. A sliding seat (54) is slidably connected to the base (53). The sliding seat (54) is connected and fixed to the moving seat (1). The sliding seat (54) is a U-shaped structure. Four rollers (55) are symmetrically rotated and connected to the inner wall of the sliding seat (54). A guide groove (56) is opened on the base (53) to make rolling contact with the rollers (55).

7. The wind turbine bird deterrent device according to claim 6, characterized in that: A wheel axle (57) is coaxially connected between the two rollers (55) located at the top. A ratchet (58) is coaxially fixedly connected in the middle of the wheel axle (57). A wheel groove (59) is provided inside the sliding seat (54) to rotate with the ratchet (58). A pawl (60) that meshes with the ratchet (58) is hinged to the inner wall of the wheel groove (59). A return spring (61) is fixed between the side wall of the pawl (60) and the inner wall of the wheel groove (59). The front wall of the moving seat (1) is an arc-shaped concave structure, and the rear wall of the moving seat (1) is a convex triangular prism structure.

8. The bird-repelling method of the wind turbine bird-repelling device according to claim 7, characterized in that, The steps are as follows: S1. Fix the base (53) to the top surface of the wind turbine; S2. Strong winds at high altitudes pass through the wind cavity (2) and cause the slide bar (20) to move downward via the drive mechanism (12); S3. After the slide bar (20) moves to the lowest point, the restriction of the drive mechanism (12) will be released, and the stored force will be released to make the slide bar (20) spring back. S4. As the lifting plate (6) rebounds with the slide bar (20), it will throw a large number of steel balls (9) into the through groove (14). The steel balls (9) will pass through the through groove (14) and enter the cavity (4) and randomly collide with multiple hollow metal rods (10) and the protrusions on the hollow metal rods (10), thus producing irregular bird-repelling sounds.

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