A wind energy collection device using vortex-induced vibration

Abstract

The present invention discloses a wind energy collection device utilizing vortex-induced vibration, and belongs to the technical field of wind power generation; the device of the present invention comprises an energy collection plate, a motion conversion device, an elastic plate, a rotating shaft support plate, a swing arm, a connecting support, a supporting cylinder, a connecting plate, a motion amplification mechanism and a fixed support; when airflow blows through the energy collection plate, a shedding vortex is generated, and the alternating swing of the shedding vortex causes the energy collection plate to swing, and this swing is transmitted to the elastic plate and the swing arm through the motion conversion device, causing the elastic plate and the swing arm to rotate; the two ends of the elastic plate are connected to a piezoelectric generator, and the rotation of the elastic plate causes the deformation of the end of the elastic plate, and the generated pressure generates electricity on the piezoelectric generator; the rotation of the swing arm is transmitted to the motion amplification mechanism, and electromagnetic power generation is performed through the cooperation between the arc-shaped rack and the gear. The device of the present invention can be used in remote and inaccessible places to power small-power electrical appliances and instruments.

Description

Technical Field

[0001] The invention belongs to the technical field of wind power generation, and in particular relates to a device which utilizes the principle of vortex-induced vibration to collect wind energy for power generation. Background Art

[0002] Wind energy is a renewable energy source. Using wind energy to generate electricity can reduce pollution and is beneficial to environmental protection. The principle of wind power generation is to convert the kinetic energy of wind into mechanical energy, and then convert the mechanical energy into electrical energy. At present, wind power can be used to drive the blades of windmills to rotate, which in turn drives the internal generator to rotate and generate electricity.

[0003] Current wind power generation uses the rotation of blades to drive the rotation of an internal generator to generate electricity. However, the blades are large in size and heavy in mass, so they will only rotate when the wind speed is high enough. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention discloses a wind energy collection device utilizing vortex-induced vibration, which converts the bending vibration of the energy collecting plate into alternating pressure at the supporting point at the end of the elastic plate and the reciprocating swing of the swing arm through a motion conversion device; thereby generating electricity using a piezoelectric generator and an electromagnetic generator.

[0005] The present invention is achieved in that:

[0006] A wind energy collection device using vortex-induced vibration, characterized in that the device comprises an energy collecting plate and an elastic plate at the lower end of the energy collecting plate, wherein the energy collecting plate is connected to the elastic plate at the lower end through a motion conversion device;

[0007] The motion conversion device includes a rotating shaft, and an upper joint and a lower joint on the upper and lower sides of the rotating shaft. The rotating shaft is located at the intersection of the energy collecting plate and the elastic plate. The elastic plate is connected through a rectangular hole in the rotating shaft, that is, the elastic plate passes through the rectangular hole. The outer end of the rotating shaft is connected to the shaft hole in the rotating shaft support plate, and the rotating shaft support plate is fixed by a connecting support.

[0008] The lower joint is connected to the swing arm, so that the swing arm rotates at the same frequency as the energy collecting plate; the axis of the rotating shaft is the central rotation axis of the energy collecting plate and the elastic plate, and energy is transmitted and converted through the rotating shaft, and all movements rotate around the axis of the rotating shaft; the vortex-induced vibration causes the second-order bending of the energy collecting plate to rotate around the rotating shaft, and the motion conversion device converts this rotation into a bending motion of the elastic plate around the rotating shaft, and the connecting support provides a supporting reaction force to the elastic plate, thereby generating alternating pressure at the end of the elastic plate, and the swing arm below the motion conversion device swings around the rotating shaft.

[0009] Furthermore, when the energy collecting plate swings, it drives the swing arm of the motion conversion device to move, the lower end of the swing arm is an arc-shaped rack, and the lower end of the swing arm is provided with a motion amplification mechanism;

[0010] The motion amplification mechanism includes an arc-shaped rack, a gear shaft, a large gear, a driving gear, a ratchet, and a support plate; the arc-shaped rack at the lower end of the swing arm is meshed with the gear shaft, and a coaxial large gear is connected to each of the left and right ends of the gear shaft; the large gear and the driving gear are fixed on the support plate, and the support plate fixedly supports the large gear and the driving gear; the support plate is connected to the connecting plate, and the upper end of the connecting plate is fixedly connected to the rotating shaft support plate, and is fixed to the connecting support through the rotating shaft support plate;

[0011] The large gear meshes with the driving gear externally, the driving gear is coaxially connected with the ratchet, an electromagnetic generator is arranged beside the ratchet, the ratchet is connected to the coil of the electromagnetic generator, and the coil is driven to rotate in the magnetic field by rotation to generate electricity. The electromagnetic generator is fixed on the connecting plate.

[0012] Furthermore, the upper joint includes a clamping plate and a joint base plate, a plurality of first bolt holes are arranged on both surfaces of the clamping plate, a plurality of second bolt holes are arranged on the joint base plate, and a groove and a joint connecting key are arranged on the lower side of the joint base plate; the upper joint is connected to the energy collecting plate, and is connected through the clamping plate above the upper joint and by bolts; the lower joint is also provided with a groove; the rotating shaft is provided with a rotating shaft groove and a rotating shaft connecting key, and the groove and the joint connecting key are correspondingly connected to the rotating shaft groove and the rotating shaft connecting key.

[0013] Furthermore, the energy collecting plate and the elastic plate form an inverted T shape; the energy collecting plate is a long straight flexible thin plate, the external shape of which is an airfoil-like structure, and the plate structure in the middle provides rigidity; in a wind field, when wind blows over the airfoil, a shedding vortex is formed at the tail of the airfoil-like structure due to the Karman vortex street effect. When the frequency of the shedding vortex is consistent with the second-order natural frequency of the energy collecting plate, the energy collecting plate will be induced to resonate and swing around the axis; in this way, using the principle of vortex-induced vibration, the energy collecting plate receives wind energy, converts it into mechanical energy, and transmits it to the elastic plate and the motion amplification mechanism.

[0014] Furthermore, the elastic plate is an elastic thin plate with a rectangular cross-section. During the deformation process, the elastic force is proportional to the strain; the elastic plate should pass through the rectangular hole of the rotating shaft, and the rotation angle is transmitted to the elastic plate through the rotation of the rotating shaft, and the energy collecting plate transmits the collected wind energy to the elastic plate; alternating supporting forces are generated at both ends of the elastic plate, and the upper and lower surfaces of the two ends of the elastic plate are connected to piezoelectric generators. The alternating supporting forces will respectively cause the piezoelectric generators on the upper and lower surfaces to generate electricity, thereby ensuring continuous output of current.

[0015] Furthermore, the motion conversion device is fixed by a rotating shaft support plate; the rotating shaft support plate is embedded in a connecting support; the connecting support is embedded in the interior of the supporting cylinder; the rotating shaft support plate is connected to the connecting support through a rotating shaft support plate connecting groove; a piezoelectric generator is placed inside the connecting support; there is an axial hole in the middle of the rotating shaft support plate, so that the rotating shaft is connected and rotates around the center; the piezoelectric generator is a very common power generation device at present, and its small size is one of its major advantages. The size of the piezoelectric generator is selected according to the size of the fixing groove, and the piezoelectric generator provides continuous current under the action of alternating supporting force. A gasket is arranged between the piezoelectric generator and the end of the elastic plate, and in order to disperse the pressure and avoid concentration at the top corner, the gasket is a gasket with an arc.

[0016] Furthermore, the support cylinder is used to support the wind energy collection device, and plays a role of fixing and connecting; the support cylinder fixes the vortex-induced vibration wind energy collection device on the cylinder wall through the connecting support, and plays a role of fixed support; a fixed support is sleeved on the outside of the support cylinder, and the support cylinder can rotate freely inside the fixed support, ensuring that the direction of the energy collecting plate is consistent with the direction of the airflow.

[0017] The movement process of a wind energy collection device using vortex-induced vibration is as follows: when the airflow blows over the energy collecting plate, a shedding vortex is generated, and the alternating swing of the shedding vortex causes the energy collecting plate to swing, and this swing is transmitted to the elastic plate and the swing arm through a motion conversion device, causing the elastic plate and the swing arm to rotate; the two ends of the elastic plate are connected to a piezoelectric generator, and the rotation of the elastic plate will cause the deformation of the end of the elastic plate, and the generated pressure will generate electricity on the piezoelectric generator; the rotation of the swing arm will be transmitted to the motion amplification mechanism, and electromagnetic power generation is performed through the cooperation between the arc-shaped rack and the gear.

[0018] The beneficial effects of the present invention compared with the prior art are:

[0019] The present invention is based on the physical phenomenon of vortex-induced vibration. When airflow blows over the surface of an object, any non-streamline object will alternately generate vortices on both sides that detach from the surface of the structure, causing positive and negative pressure and pressure moments to appear on the upper and lower or left and right surfaces of the structure, which is called vortex-induced force. This vortex-induced force will cause vortex-induced vibration. When the shedding vortex alternately detaches from each side of the engineering structure, a periodic force is excited on it. When the frequency of the shedding vortex is consistent with the natural frequency of the engineering structure, it will induce resonance in the engineering structure.

[0020] The present invention utilizes vortex-induced vibration to excite the second-order bending vibration of the energy collecting plate, and converts the bending vibration of the energy collecting plate into alternating pressure at the supporting point at the end of the elastic plate and reciprocating swing of the swing arm through a motion conversion device; thereby generating electricity using a piezoelectric generator and an electromagnetic generator.

[0021] The power generation device of the present invention is small in size, will not occupy too much land resources, and will not affect the activities of birds. The power generation device of the present invention has low manufacturing cost and subsequent maintenance cost, and the construction time is greatly shortened, the installation scale is more flexible, and the service life is extended. The power generation device of the present invention can be used in remote and inaccessible places to power small power electrical appliances and instruments.

[0022] Figure 1 1A is a schematic diagram of a wind energy collection device using vortex-induced vibration according to the present invention, wherein 1A is a general assembly diagram; 1B is a schematic diagram of a shedding vortex;

[0023] Figure 2 2A is a schematic diagram of a wind energy collection device using vortex-induced vibration according to the present invention; 2B is a three-view diagram of a joint; 2C is a view and a cross-sectional diagram of a rotating shaft;

[0024] Figure 3 A schematic diagram of a motion amplification mechanism of a wind energy collection device utilizing vortex-induced vibration according to the present invention;

[0025] Figure 4 A schematic diagram of a rotating shaft support plate of a wind energy collection device utilizing vortex-induced vibration according to the present invention;

[0026] Figure 5 A schematic diagram of a connecting support of a wind energy collection device utilizing vortex-induced vibration according to the present invention;

[0027] 1-first bolt hole, 2-clamp plate, 3-joint bottom plate, 4-groove, 5-joint connecting key, 6-second bolt hole, 7-outer end of the shaft, 8-rectangular hole, 9-bolt hole, 10-spindle groove, 11-spindle connecting key, 12-spindle, 13-swing arm, 14-spindle support plate, 15-connecting plate, 16-ratchet, 17-driving gear, 18-support plate, 19-gear shaft, 20-large gear, 21-shaft hole, 22-fixing groove, 23-spindle support plate connecting groove, 24-energy collecting plate, 25-support cylinder, 26-upper joint, 27-lower joint. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail by enumerating examples below. It should be noted that the specific implementation described here is only used to explain the present invention and is not used to limit the present invention.

[0029] like Figures 1 to 5As shown, the device of the present invention includes an energy collecting plate, a motion conversion device, an elastic plate, a rotating shaft support plate, a swing arm, a connecting support, a supporting cylinder, a connecting plate, a motion amplification mechanism and a fixed support. The energy collecting plate stands vertically in the wind field, the plate plane is consistent with the airflow direction, the lower end of the energy collecting plate is connected to the elastic plate through the motion conversion device, the energy collecting plate and the elastic plate form an inverted T shape, the elastic plate is the short side of the inverted T shape, and the intersection of the vertical plate and the horizontal plate is the position of the rotating shaft. Vortex-induced vibration causes the second-order bending of the energy collecting plate to rotate around the rotating shaft, and the motion conversion device converts this rotation into a bending motion of the elastic plate around the rotating shaft. The connecting support provides a supporting reaction force to the elastic plate, thereby generating alternating pressure at the end of the elastic plate, and the swing arm below the motion conversion device swings around the rotating shaft.

[0030] The motion conversion device includes a rotating shaft 12, and an upper joint 26 and a lower joint 27 on the upper and lower sides of the rotating shaft. The rotating shaft 12 is located at the intersection of the energy collecting plate 24 and the elastic plate; the elastic plate is connected through the rectangular hole 8 in the rotating shaft 12, that is, the elastic plate passes through the rectangular hole; the outer end of the rotating shaft 12 is connected to the shaft hole in the rotating shaft support plate 14, and the rotating shaft support plate 14 is fixed by a connecting support, and the lower joint 27 is connected to the swing arm 13, so that the swing arm 13 rotates at the same frequency as the energy collecting plate; the axis of the rotating shaft 12 is the central rotation axis of the energy collecting plate and the elastic plate, and energy is transmitted and converted through the rotating shaft, and all movements rotate around the axis of the rotating shaft 12;

[0031] When the energy collecting plate swings, it drives the swing arm 13 of the motion conversion device to move. The lower end of the swing arm 13 is an arc-shaped rack, and a motion amplification mechanism is arranged at the lower end of the swing arm 13; the motion amplification mechanism comprises an arc-shaped rack, a gear shaft 19, a large gear 20, a driving gear 17, a ratchet 16, and a support plate 18; the arc-shaped rack at the lower end of the swing arm 13 is meshed with the gear shaft 19, and a coaxial large gear 20 is connected to each of the left and right ends of the gear shaft; the large gear 20 and the driving gear 17 are fixed on the support plate 18, and the support plate fixedly supports the large gear and the driving gear; the support plate 18 is connected to the connecting plate 15, and the upper end of the connecting plate 15 is fixedly connected to the rotating shaft support plate 14, and is fixed to the connecting support through the rotating shaft support plate 14;

[0032] The large gear 20 is externally meshed with the driving gear 17, and the driving gear 17 is coaxially connected to the ratchet 16. An electromagnetic generator is arranged beside the ratchet. The ratchet is connected to the coil of the electromagnetic generator, and the coil is driven to rotate in the magnetic field by rotation to generate electricity. The electromagnetic generator is fixed on the connecting plate 15.

[0033] The upper joint 26 includes a clamping plate 2 and a joint bottom plate 3. The clamping plate 2 is provided with a plurality of first bolt holes 1 on both surfaces, the joint bottom plate 3 is provided with a plurality of second bolt holes 6, and the lower side of the joint bottom plate 3 is provided with a groove 4 and a joint connection key 5. The upper joint 26 is connected to the energy collecting plate, and is connected by bolts through the clamping plate 2 above the upper joint 26. The lower joint 27 is also provided with a groove 4. The rotating shaft 12 is provided with a rotating shaft groove 10 and a rotating shaft connection key 11, and the groove 4 and the joint connection key are correspondingly connected to the rotating shaft groove 10 and the rotating shaft connection key 11. The outer end 7 of the shaft is connected to the shaft hole on the rotating shaft support plate; the bolt is tightened through the bolt hole 9; the piezoelectric generator is placed in the fixing groove 22. The piezoelectric generator is a very common power generation device at present, and its small size is a major advantage. According to the size of the fixing groove 22, the size of the piezoelectric generator is selected, and the piezoelectric generator provides continuous current under the action of the alternating supporting force.

[0034] The motion conversion device is a device that transfers the wind energy collected by the energy collecting plate to other parts. It consists of an upper joint, a lower joint and a rotating shaft. The material selected is steel. The upper joint and the lower joint are respectively connected to the upper and lower sides of the rotating shaft, and the upper joint clamps the plate structure that provides rigidity in the energy collecting plate. The lower joint is connected to the swing arm, so the swing transmission of the energy collecting plate can be converted into the swing of the elastic plate and the movement of the swing arm through the motion conversion device.

[0035] The motion amplification mechanism amplifies the swing angle of the swing arm around the shaft, and converts the reciprocating swing into intermittent unidirectional rotation through the ratchet. The motion amplification mechanism is connected to the shaft support plate through the connecting plate and then to the connecting support and the support cylinder. The support cylinder can rotate freely relative to the fixed support so that the entire device can adapt to the wind direction at the time and ensure that the direction of the energy collecting plate is consistent with the direction of the airflow. Finally, the entire device is supported to the ground by a fixed support, and the height can be adjusted according to the local conditions, so that the energy collecting plate can collect the maximum amount of wind energy.

[0036] This vortex-induced vibration wind energy collection device needs to be assembled before use. First, the joint and the shaft are connected in a matching manner. The upper joint device is sleeved on the groove of the shaft along the groove, that is, the groove 4 of the joint is matched with the connecting key 11 of the shaft, and the joint connecting key 5 is matched with the groove 10 of the shaft. The lower joint is also matched with the shaft in the same way. Secondly, the shaft support plate is sleeved on both ends of the shaft. Then, the position of the shaft support plate needs two connecting supports to fix it, that is, the two short sides of the shaft support plate are connected to the shaft support plate connecting groove 14 of the connecting support. The connecting support is fixed by a supporting cylinder. The connecting plate is connected under the shaft support plate. The swing arm is connected to the lower joint of the motion conversion device, and the swing arm is connected to the motion amplification mechanism. The energy collecting plate collects wind energy, transfers the wind energy to the motion conversion device, and begins to swing back and forth around the center line of the shaft, while driving the swing arm of the lower half of the motion conversion device to swing back and forth and the elastic plate at the center of the shaft to vibrate. There is a fixed support outside the support cylinder, and the support cylinder can rotate inside the fixed support, so that the airfoil chord direction of the energy collecting plate is consistent with the flow direction of the wind. This device is made of steel, and the specific parameters are introduced below.

[0037] The energy collecting plate is an external shape similar to an airfoil, and the plate structure in the middle provides rigidity. The plate structure in the middle is a rectangular cross-section thin plate with a length of 2000mm, a width of 100mm, and a thickness of 15mm. The outside is matched with a thin-walled structure similar to a wing, and the airfoil thickness is 60mm and the length of the airfoil is 1800mm. The plate structure in the middle can appropriately increase the counterweight to change its own natural frequency, which can play a good effect at different wind speeds.

[0038] The clamping plate 2 of the joint is 180mm long, 140mm wide and 10mm thick. There are 6 bolt holes with a diameter of 10mm on the clamping plate 2. The distance between the center of the bolt hole and the long side is 30mm, the center of the two bottom bolt holes is 50mm away from the wide side, the distance between the center of the two middle bolt holes and the center of the two bottom bolt holes is 50mm, and the distance between the center of the two middle bolt holes and the center of the two top bolt holes is also 50mm. The distance between the two sides of the two clamping plates that are close to each other is 15mm. The bottom plate 3 of the joint is a beam similar to a concave shape, with a length of 140mm and a center thickness of 15mm. The height of the groove 4 of the joint is 8mm, and the distance between the high side of the groove 4 of the joint and the axis of symmetry is 40mm. The length of the wide side of the joint connection key 5 is 8mm, the length of the high side is 8mm, and the distance between the high side and the axis of symmetry is 32mm. The bottom plate 3 is provided with four bolt holes 6, each having a diameter of 8 mm. The distance between the centers of two adjacent holes is 50 mm, that is, the distance between the centers of the four holes and the symmetry axis is 25 mm.

[0039] The distance between the two end faces of the outer end 7 of the rotating shaft is 170mm, the radius of the protruding cylinder is 25mm, and the thickness along the axial direction is 15mm. The main body of the shaft device is an approximate rectangular parallelepiped, with a length of 140mm, a width of 80mm on the side with the bolt hole 9, and a width of 70mm on the side with the groove 10. The diameter of the bolt hole 9 is 8mm, and the distance between the center of the bolt hole and the two horizontal and vertical symmetry axes is 25mm. The bolt hole runs through the main body of the shaft device. The depth of the groove 10 is 8mm, and the width of the groove is also 8mm. The width of the rotating shaft connecting key 11 that matches the joint device is 8mm. The rectangular hole 8 is a hole that runs through the main body of the shaft device, and its purpose is to allow the elastic plate to pass through, so that the wind force can be transmitted to the elastic plate. The length of the hole is 100mm and the width is 10mm. The center of the hole coincides with the center of the main body of the shaft device, and the hole runs through the main body of the shaft device along the longitudinal direction. The elastic plate is 480mm long, 100mm wide and 10mm thick. A piezoelectric generator is placed on the upper and lower surfaces of the end of the elastic plate, with a total of four piezoelectric generators. When the elastic plate bends, a strain will be generated at the root. Placing a piezoelectric generator on the upper and lower surfaces can generate electricity continuously, that is, in one cycle, electricity will be generated when the root bends upward and downward.

[0040] The length of the shaft support plate is 360mm, the width is 140mm, the thickness is 15mm, the radius of the shaft hole 12 is 25mm, and it cooperates with the outer end 7 of the shaft on the shaft to fix the horizontal movement of the shaft device and only retain the rotation of the shaft. The position of the shaft support plate is fixed by bolts and the connecting support.

[0041] The connecting support is a device that connects the above device to a supporting cylinder, and is connected to the supporting cylinder by bolts, and its height is 200mm. The fixing groove 13 is a rectangular groove with a length and width of 100mm and a depth of 60mm. The size of the piezoelectric generator is about 40mm in length and about 12mm in width. It is placed on the upper and lower inner surfaces of the fixing groove, and the two ends of the elastic plate are just against the bottom surface of the rectangular groove. The shaft support plate connecting groove 14 is a groove-shaped part with a length of 140mm, a width of 15mm, a depth of 40mm, and a wall thickness of 10mm. The purpose is to connect with the shaft support plate and fix the shaft support plate. The protruding parts on both sides of the groove are 10mm thick. The bottom surface of the fixing groove 13 differs from the bottom surface of the shaft support plate connecting groove 14 by 60mm. Since the radius of the inner surface of the supporting cylinder is 250mm, the curvature of the upper half of the connecting support is consistent with the inner cylinder.

[0042] The above devices are connected and matched to form the main body of the device. At this time, in order to facilitate the rotation of the device, the fixed support sleeve is placed outside the inner cylinder. In this way, when the wind direction changes, the angle can be changed to make the airflow blow over the surface of the object.

[0043] The above description is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A wind energy collection device using vortex-induced vibration, characterized in that: The device comprises an energy collecting plate (24) and an elastic plate at the lower end of the energy collecting plate (24), wherein the energy collecting plate (24) is connected to the elastic plate at the lower end via a motion conversion device; The motion conversion device comprises a rotating shaft (12), and an upper joint (26) and a lower joint (27) on the upper and lower sides of the rotating shaft. The rotating shaft (12) is located at the intersection of the energy collecting plate (24) and the elastic plate. The elastic plate is connected via a rectangular hole (8) in the rotating shaft (12), that is, the elastic plate passes through the rectangular hole. The outer end of the rotating shaft (12) is connected to the shaft hole in the rotating shaft support plate (14), and the rotating shaft support plate (14) is fixed via a connecting support. The lower joint (27) is connected to the swing arm (13), so that the swing arm (13) rotates at the same frequency as the energy collecting plate; the axis of the rotating shaft (12) is the central rotation axis of the energy collecting plate and the elastic plate, and energy is transmitted and converted through the rotating shaft, and all movements rotate around the axis of the rotating shaft (12); the vortex-induced vibration causes the second-order bending of the energy collecting plate to rotate around the rotating shaft, and the motion conversion device converts this rotation into a bending motion of the elastic plate around the rotating shaft, and the connecting support provides a supporting reaction force to the elastic plate, thereby generating an alternating pressure at the end of the elastic plate, and the swing arm below the motion conversion device swings around the rotating shaft.

2. A wind energy collection device using vortex-induced vibration according to claim 1, characterized in that: When the energy collecting plate swings, it drives the swing arm (13) of the motion conversion device to move, the lower end of the swing arm (13) is an arc-shaped rack, and the lower end of the swing arm (13) is provided with a motion amplification mechanism; The motion amplification mechanism comprises an arc-shaped rack, a gear shaft (19), a large gear (20), a driving gear (17), a ratchet (16), and a support plate (18); the arc-shaped rack at the lower end of the swing arm (13) meshes with the gear shaft (19), and a coaxial large gear (20) is connected to the left and right ends of the gear shaft; the large gear (20) and the driving gear (17) are both fixed on the support plate (18), and the support plate fixedly supports the large gear and the driving gear; the support plate (18) is connected to the connecting plate (15), and the upper end of the connecting plate (15) is fixedly connected to the rotating shaft support plate (14), and is fixed to the connecting support through the rotating shaft support plate (14); The large gear (20) is externally meshed with the driving gear (17), the driving gear (17) is coaxially connected to the ratchet (16), and an electromagnetic generator is arranged next to the ratchet; the ratchet is connected to the coil of the electromagnetic generator, and the coil is driven to rotate in the magnetic field by rotation, thereby generating electricity; the electromagnetic generator is fixed on the connecting plate (15).

3. A wind energy collection device using vortex-induced vibration according to claim 1, characterized in that: The upper joint (26) comprises a clamping plate (2) and a joint base plate (3), a plurality of first bolt holes (1) are arranged on both surfaces of the clamping plate (2), a plurality of second bolt holes (6) are arranged on the joint base plate (3), and a groove (4) and a joint connection key (5) are arranged on the lower side of the joint base plate (3); the upper joint (26) is connected to the energy collecting plate and is connected by bolts through the clamping plate (2) above the upper joint (26); the lower joint (27) is also provided with a groove (4); the rotating shaft (12) is provided with a rotating shaft groove (10) and a rotating shaft connection key (11), and the groove (4) and the joint connection key are correspondingly connected to the rotating shaft groove (10) and the rotating shaft connection key (11).

4. A wind energy collection device using vortex-induced vibration according to claim 1, characterized in that: The energy collecting plate (24) and the elastic plate form an inverted T-shape; the energy collecting plate (24) is a long straight flexible thin plate, the outer shape of which is an airfoil-like structure, and the plate structure in the middle provides rigidity; in a wind field, when wind blows over the airfoil, a shedding vortex is formed at the tail of the airfoil-like structure due to the Karman vortex street effect, and when the frequency of the shedding vortex is consistent with the second-order natural frequency of the energy collecting plate, the energy collecting plate will be induced to resonate, causing it to swing around the axis; the energy collecting plate receives wind energy and converts it into mechanical energy, which is transmitted to the elastic plate and the motion amplification mechanism.

5. A wind energy collection device using vortex-induced vibration according to claim 1, characterized in that: The elastic plate is a thin plate with an elastic rectangular cross-section. During the deformation process, the elastic force is proportional to the strain. The elastic plate should pass through the rectangular hole of the rotating shaft. Through the rotation of the rotating shaft, the rotation angle is transmitted to the elastic plate, and the energy collecting plate transmits the collected wind energy to the elastic plate. Alternating supporting forces are generated at both ends of the elastic plate. The upper and lower surfaces of the two ends of the elastic plate are connected to piezoelectric generators. The alternating supporting forces will respectively cause the piezoelectric generators on the upper and lower surfaces to generate electricity, thereby ensuring the continuous output of current.

6. A wind energy collection device using vortex-induced vibration according to claim 1, characterized in that: The motion conversion device is fixed by a rotating shaft support plate; the rotating shaft support plate is embedded in a connecting support; the connecting support is embedded in the interior of a supporting cylinder (25); the rotating shaft support plate is connected to the connecting support via a rotating shaft support plate connecting groove (23); a piezoelectric generator is placed inside the connecting support; an axial hole (21) is provided in the middle of the rotating shaft support plate, so that the rotating shaft (12) is connected and rotates around the center; the piezoelectric generator provides continuous current under the action of an alternating supporting force; a gasket is provided between the piezoelectric generator and the end of the elastic plate, and in order to disperse the pressure and avoid concentration at the top corner, the gasket is a gasket with an arc.

7. A wind energy collection device using vortex-induced vibration according to claim 6, characterized in that: The support cylinder (25) is used to support the wind energy collection device, and plays a role of fixing and connecting; the support cylinder fixes the vortex-induced vibration wind energy collection device on the cylinder wall through the connecting support, and plays a role of fixed support; a fixed support is sleeved on the outside of the support cylinder, and the support cylinder can be freely rotated inside the fixed support, ensuring that the direction of the energy collection plate is consistent with the direction of the airflow.

8. A wind energy collection device using vortex-induced vibration according to any one of claims 1 to 7, characterized in that: The movement process of the device is as follows: when the airflow blows through the energy collecting plate, a shedding vortex is generated, and the alternating swing of the shedding vortex causes the energy collecting plate to swing, and this swing is transmitted to the elastic plate and the swing arm through the motion conversion device, causing the elastic plate and the swing arm to rotate; the two ends of the elastic plate are connected to the piezoelectric generator, and the rotation of the elastic plate will cause the deformation of the end of the elastic plate, and the generated pressure will generate electricity on the piezoelectric generator; the rotation of the swing arm will be transmitted to the motion amplification mechanism, and electromagnetic power generation is performed through the cooperation between the arc-shaped rack and the gear.

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