A vertical axis wind turbine

Abstract

The invention discloses a vertical axis wind turbine generator, comprising a base and a central rotating shaft, a plurality of wind plate frames evenly distributed around the axis are arranged on the central rotating shaft, a wind plate is arranged on the wind plate frame, a wind plate rotating shaft is arranged on the wind plate, the wind plate rotating shaft is arranged horizontally, a wind plate operating lever capable of controlling the rotation of the wind plate rotating shaft is arranged on the wind plate rotating shaft, the wind plate operating lever is connected to a lifting crank shaft, a cam cylinder is arranged at the upper end of the central shaft, a semicircular ring lower surface and a semicircular ring upper surface are arranged on the upper end annular surface of the cam cylinder, the semicircular ring lower surface and the semicircular ring upper surface are transitionally connected through a sloped cam lifting surface, one end of the lifting crank shaft is supported on the upper end annular surface of the cam cylinder, and the middle part of the lifting crank shaft is hinged on a bracket fixed on the wind plate frame. The wind plate of the vertical axis wind turbine generator can automatically change the direction of the wind plate, thereby reducing the resistance of the reverse wind, and when the wind force is too strong, all the wind plates are automatically changed to a horizontal direction, thereby reducing the damage of the wind force to the generator.

Description

Technical Field

[0001] The invention relates to a wind power generation device, in particular to a vertical axis wind power generator. Background Art

[0002] Wind energy is a renewable energy source, and there are many types of wind turbines that use wind energy. At present, there are two main types of wind turbines, one is a horizontal axis wind turbine, and the other is a vertical axis wind turbine. Vertical axis wind turbines are divided into two types: resistance type and lift type. The lift type wind turbine has a high speed, large rotational inertia, relatively simple structure, and low cost, but this structure is difficult to start when the vertical axis wind turbine starts running, especially when the wind speed is low, the operating performance is poor; the advantage of the resistance type wind turbine is that the starting torque is large and the starting performance is good, but its speed is low, and the utilization rate of wind energy is even lower than that of the horizontal axis wind turbine. Patent No. 201410368026.1 discloses a vertical axis wind turbine, which collects wind energy by fixing the fan blades. When the wind blows, the fan blades on one side provide a positive torque while the fan blades on the other side also generate a large reverse torque, so the utilization efficiency of wind power is still very low. In addition, the existing wind turbines are not very strong in resisting strong winds. When the wind is too strong, it is easy to blow down the generator, causing losses. Summary of the invention

[0003] In order to overcome the deficiencies in the prior art, the present invention provides a vertical axis wind turbine.

[0004] The present invention is realized through the following technical scheme: a vertical axis wind turbine, comprising a base and a central rotating shaft, a plurality of wind plate frames evenly distributed around the axis are arranged on the central rotating shaft, a wind plate is arranged on the wind plate frame, a wind plate rotating shaft is arranged on the wind plate and fixed on the wind plate frame, the wind plate rotating shaft is arranged horizontally, a wind plate operating lever for controlling the rotation of the wind plate rotating shaft is arranged on the wind plate rotating shaft, the wind plate operating lever is connected to a lifting crank shaft, a cam barrel is arranged at the upper end of the central shaft, the upper end circular surface of the cam barrel is provided with a semi-circular low surface and a semi-circular high surface, the semi-circular low surface and the semi-circular high surface are transitionally connected by a sloped cam lifting surface, one end of the lifting crank shaft is supported on the upper end circular surface of the cam barrel, and the middle part of the lifting crank shaft is hinged on a bracket fixed on the wind plate frame.

[0005] In the above scheme, a bend shaft lifting cylinder is arranged in the cam cylinder, a wind vane is arranged on the bend shaft lifting cylinder, a wind direction tail rudder is arranged on the wind vane, and two windward plates that can stand upright and lie flat and are perpendicular to the wind direction tail rudder are also arranged. A safety pull wire is arranged at the lower part of the windward plate, and the lower end of the safety pull wire is fixed on the inner wall of the bend shaft lifting cylinder.

[0006] In the above scheme, the wind plate frame is provided with multiple rows and columns of regularly arranged wind plates, each wind plate is provided with a wind plate rotating shaft, the wind plate rotating shaft is perpendicular to the central rotating shaft, and each wind plate rotating shaft is provided with a wind plate operating lever which can control the rotation of the wind plate rotating shaft. The outer ends of the wind plate operating levers in each row are hinged to a linkage rod, and the top end of each linkage rod is hinged to a transverse connecting rod, and the middle of the transverse connecting rod is fixed to the lifting crank shaft through a hinge.

[0007] In the above scheme, a lifting groove is arranged on the wall of the cam tube, a pin which can slide in the lifting groove is arranged on the outer wall of the crank shaft lifting tube, and a return tension spring is arranged at the lower end of the pin.

[0008] In the above solution, a crank shaft roller is provided at the contact portion between the lifting crank shaft and the cam cylinder.

[0009] In the above solution, the lifting groove is arranged at an angle of 45° with the axis of the central rotating shaft.

[0010] In the above scheme, in order to increase the wind gathering force, the wind plate frame is arranged in an arc shape.

[0011] Compared with the prior art, the vertical axis wind turbine of the present invention has the following beneficial effects:

[0012] 1. The wind blades of the wind turbine can automatically change their direction, reducing the resistance of adverse wind and improving the utilization rate of wind power.

[0013] 2. The wind turbine has a self-protection function. When the wind is too strong, all wind panels will automatically change to a horizontal direction, reducing the risk of the wind turbine being blown down. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a vertical axis wind turbine of the present invention.

[0015] Figure 2 yes Figure 1 Magnified view at A in the middle.

[0016] Figure 3 yes Figure 1 DD view in .

[0017] Figure 4 yes Figure 1 E view in the figure.

[0018] Figure 5 yes Figure 4 C-direction view.

[0019] Figure 6 yes Figure 2 B view in the figure.

[0020] In the figure: 1. base, 2. central shaft, 3. wind plate frame, 4. wind plate, 5. wind plate shaft, 6. connecting shaft, 7. lifting crank shaft, 8. pin shaft, 9. lifting groove, 10. cam cylinder, 11. crank shaft lifting cylinder, 12. safety pull wire, 13. windward plate, 14. wind direction tail rudder, 15. cam lifting surface, 16. crank shaft roller, 17. wind plate control lever, 18. linkage rod, 19. transverse connecting rod, 20. cable fixing column, 21. weather vane fixing column, 22. bracket. DETAILED DESCRIPTION

[0021] The following is a further description of a vertical axis wind turbine according to the present invention in conjunction with the accompanying drawings and specific embodiments:

[0022] Figure 1 It is a structural schematic diagram of a vertical axis wind turbine according to the present invention. Figure 2 yes Figure 1 The enlarged view of A in the middle. Figure 3 yes Figure 1 DD view in, Figure 4 yes Figure 1 The E-direction view in Figure 5 yes Figure 4 C-direction view, Figure 6 yes Figure 2In the figure, the vertical axis wind turbine includes a base 1 and a central rotating shaft 2. The central rotating shaft 2 is provided with a plurality of wind plate frames 3 evenly distributed around the rotating shaft. The wind plate frames 3 are arranged in an arc shape. The wind plate frames 3 are provided with a plurality of rows and columns of regularly arranged wind plates 4. Each wind plate 4 is provided with a wind plate rotating shaft 5. The wind plate rotating shaft 5 is perpendicular to the central rotating shaft 2. Each wind plate rotating shaft 5 is provided with a wind plate operating lever 17 for controlling the rotation of the wind plate rotating shaft. The outer ends of the wind plate operating levers 17 in each column are hinged to the same linkage rod 18. The top end of each linkage rod 18 is hinged to a transverse connecting rod 19. The middle of the transverse connecting rod 19 is fixed to the lifting crank shaft 7 through a hinge. A cam barrel 10 is arranged at the upper end of the central rotating shaft 2, and the upper end annular surface of the cam barrel 10 is provided with a semi-circular lower surface and a semi-circular upper surface, and the semi-circular lower surface and the semi-circular upper surface are transitionally connected through a sloped cam lifting surface 15, and a crank roller 16 is arranged at one end of the lifting crank shaft 7 and is carried on the upper end annular surface of the cam barrel 10, and the middle part of the lifting crank shaft 7 is hinged on a bracket 22 fixed on the wind plate frame, and the lifting crank shaft 7 can swing up and down on the bracket 22. A crank lifting barrel 11 is arranged in the cam barrel 10, and a wind vane is arranged on the crank lifting barrel 11, and a wind direction tail rudder 14 is arranged on the wind vane, and two windward boards 13 that can stand upright and lie flat are also arranged perpendicular to the wind direction tail rudder 14, and a safety pull wire 12 is arranged at the lower part of the windward board 13, and the lower end of the safety pull wire 12 is fixed on the pull wire fixing column 20 on the inner wall of the crank lifting barrel 11. The cam tube 10 is provided with a lifting groove 9 on its wall, and the outer wall of the crank shaft lifting tube 11 is provided with a pin 8 that can slide in the lifting groove 9, and a return spring is provided at the lower end of the pin 8. The lifting groove 9 is arranged at an angle of 45° with the axis of the central rotating shaft 2.

[0023] During operation, the wind plate 4 on the side generating the positive torque is in an upright state. When the wind blows the wind plate 4 to rotate through a certain angle, the blowing force of the wind on the wind plate gradually decreases. At this time, the bend shaft roller 16 on the lifting bend shaft 7 rises along with the cam lifting surface 15, driving the wind plate operating lever 17 to lift up, and finally lifting the wind plate 4 to a horizontal state. At this time, the reverse torque of the wind plate 4 reaches a minimum. As the wind plate frame continues to rotate, the lifting bend shaft 7 on the horizontal wind plate descends along with the cam lifting surface 15 on the other side, and the wind plate 4 is changed to an upright state through the wind plate operating lever 17, thereby increasing the positive torque of the wind plate frame, and the cycle continues. When the wind is too strong, in order to prevent the wind turbine from being blown down by the wind, the strong wind will blow the windward plate 13 down to a horizontal state, and the turning shaft lifting cylinder 11 will be pulled upward through the safety pull line 12. Then, the upper end surface of the turning shaft lifting cylinder 11 will lift the turning shaft 7 at the same time, and all the wind plates will be turned into a horizontal state to reduce the destructive force of the strong wind on the wind turbine. When the wind is slightly reduced, the return spring under the pin shaft will pull the pin shaft back to the bottom position, the turning shaft lifting cylinder 11 will fall back, and the wind turbine will be in normal working condition again.

[0024] The wind blades of the vertical axis wind turbine can automatically change their direction, reducing the resistance of adverse wind. At the same time, when the wind is too strong, all the wind blades will automatically change to a horizontal direction, reducing the damage of wind to the generator.

[0025] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A vertical axis wind turbine, comprising a base and a central rotating shaft, wherein the central rotating shaft is provided with a plurality of The wind board frame is characterized by: The wind plate frame is provided with a wind plate, and a wind plate rotating shaft is provided on the wind plate and fixed on the wind plate frame. The wind plate rotating shaft is arranged horizontally, and a wind plate operating lever for controlling the rotation of the wind plate rotating shaft is arranged on the wind plate rotating shaft, and the wind plate operating lever is connected with the lifting crank shaft, and a cam cylinder is arranged at the upper end of the central axis, and the upper end annular surface of the cam cylinder is provided with a semi-circular ring low surface and a semi-circular ring high surface, and the semi-circular ring low surface and the semi-circular ring high surface are transitionally connected through the inclined cam lifting surface, and one end of the lifting crank shaft is supported on the upper end annular surface of the cam cylinder, and the middle part of the lifting crank shaft is hinged on the bracket fixed on the wind plate frame. A turn shaft lifting cylinder is arranged in the cam cylinder, a wind vane is arranged on the turn shaft lifting cylinder, a wind direction tail rudder is arranged on the wind vane, and two windward plates which can stand upright and lie flat and are perpendicular to the wind direction tail rudder are also arranged, a safety pull wire is arranged at the lower part of the windward plate, and the lower end of the safety pull wire is fixed on the inner wall of the turn shaft lifting cylinder, a lifting groove is arranged on the cylinder wall of the cam cylinder, a pin shaft which can slide in the lifting groove is arranged on the outer wall of the turn shaft lifting cylinder, a return tension spring is arranged at the lower end of the pin shaft, a turn shaft roller is arranged at the contact position between the lifting turn shaft and the cam cylinder, and the wind plate frame is arranged in an arc shape.

2. A vertical axis wind turbine according to claim 1, characterized in that: The wind plate frame is provided with multiple rows and columns of regularly arranged wind plates, each wind plate is provided with a wind plate rotating shaft, the wind plate rotating shaft is perpendicular to the central rotating shaft, each wind plate rotating shaft is provided with a wind plate operating lever which can control the rotation of the wind plate rotating shaft, the outer ends of the wind plate operating levers in each row are hinged on a linkage rod, the top end of each linkage rod is hinged on a transverse connecting rod, and the middle of the transverse connecting rod is fixed to the lifting crank shaft through a hinge.

3. A vertical axis wind turbine according to claim 1, characterized in that: The lifting groove is arranged at an angle of 45° with the axis of the central rotating shaft.

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