A vertical axis wind turbine with energy-saving and efficiency-enhancing functions

Abstract

The present invention relates to the technical field of wind turbines, and discloses a vertical axis wind turbine with energy-saving and efficiency-enhancing functions, comprising a base, a support rod arranged on the base, and a generator arranged on the support rod. A rotating platform is fixed on the main shaft of the generator, and a plurality of support frames are connected to the rotating platform in an equi-angle circular array, and a group of vertical blades are fixed on each support frame; a power-assisted starting mechanism is arranged on the rotating platform, and a rotating rod is rotatably connected to the power-assisted starting mechanism, and a round table is arranged at the end of the rotating rod, and a plurality of support plates are arranged at both ends of the round table, and a spiral blade is arranged between each group of support plates. The vertical axis wind turbine with energy-saving and efficiency-enhancing functions, when the wind speed is low, the spiral blades rotate before the vertical blades because they have a smaller mass and better wind resistance, and the starting mechanism transmits the rotational force of the spiral blades to the main shaft of the generator, thereby reducing the wind speed threshold for the vertical blades to drive the main shaft of the generator to rotate, and improving the power generation efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbines, and in particular to a vertical axis wind turbine with energy-saving and efficiency-enhancing functions. Background Art

[0002] A vertical axis wind turbine is a wind power generation device whose rotor axis is perpendicular to the ground or wind flow direction. Compared with traditional horizontal axis wind turbines (HAWT), vertical axis wind turbines have the characteristics of strong wind direction adaptability, low starting wind speed, compact structure, low noise and low maintenance cost. Common types include Savonius type: The blade shape of the Savonius type wind turbine is similar to two half barrels, spliced ​​together to form an "S" shape or semi-enclosed structure; this design can produce a large resistance difference at low wind speeds, making it easier to start; it is more efficient at low wind speeds, but less efficient at high wind speeds. Darrieus type: The blade shape of the Darrieus type wind turbine is similar to the wing of an airplane, usually in an "H" shape or "E" shape; it requires a higher wind speed to start, and sometimes requires an auxiliary starting mechanism. It is more efficient at high wind speeds, but the starting performance is relatively poor.

[0003] A vertical axis micro-wind generator is disclosed in the patent publication number CN118030368A, including a tower, a shock-absorbing and straightening device is installed in a sunken manner on the upper end of the tower, the input end of the shock-absorbing and straightening device extends to the top of the tower and is fixedly connected to a wind wheel mounting seat, a vertical axis wind wheel is installed on the wind wheel mounting seat, and wind-collecting scoops are installed at positions corresponding to each lightweight blade on the vertical axis wind wheel.

[0004] The prior art has the following defects:

[0005] Existing auxiliary starting mechanisms all introduce additional power sources. Although the auxiliary starting mechanisms help wind turbines start under low wind speed conditions and provide the necessary initial power, they do have some disadvantages, mainly related to additional energy consumption and system complexity. The following are the specific disadvantages:

[0006] Increased operating costs: Auxiliary starting mechanisms require additional energy (such as electricity, compressed gas, etc.), which increases the operating costs of the wind power system. Especially when the system is located in a remote area or far away from the power grid, the additional energy supply may be more difficult and expensive.

[0007] Reduced overall efficiency: The energy consumed by the auxiliary starting mechanism during the starting process is not converted into the power output of the wind turbine, which will lead to a reduction in the overall efficiency of the system. Especially under low wind speed conditions, frequent use of the auxiliary starting mechanism will make the efficiency problem more obvious.

[0008] Increased design difficulty: Wind power generation systems require additional design and integration of auxiliary starting mechanisms, which increases the complexity and difficulty of system design. The starting conditions, control logic and compatibility of the auxiliary mechanism with the main system need to be considered during design.

[0009] Increased maintenance costs: The introduction of the auxiliary start mechanism increases the maintenance requirements of the system. With an additional subsystem, there are more failure points and components that require regular inspection, which increases maintenance costs and workload. Summary of the invention

[0010] In view of the above problems in the prior art, a vertical axis wind turbine with energy-saving and efficiency-enhancing functions is proposed.

[0011] The present application provides a vertical axis wind turbine with energy-saving and efficiency-enhancing functions, the purpose of which is to improve the starting performance of the Darrieus type wind turbine so that it can rotate and generate electricity at a lower wind speed without introducing additional energy.

[0012] The technical solution of the present invention is: a vertical axis wind turbine with energy-saving and efficiency-enhancing functions, comprising a base, a support rod arranged on the base, and a generator arranged on the support rod, a rotating platform is fixed on the main shaft of the generator, and a plurality of groups of support frames are connected to the rotating platform in an equiangular circular array, and a group of vertical blades is fixed on each group of the support frames;

[0013] The rotating table is provided with a power-assisted starting mechanism, the power-assisted starting mechanism is rotatably connected with a rotating rod, a round table is provided at the end of the rotating rod, a plurality of groups of support plates are provided at both ends of the round table, a spiral blade is provided between each group of the support plates, and a top pin is provided at the top of the round table;

[0014] The power-assisted starting mechanism is used to transmit the rotational force of the spiral blades to the main shaft of the generator.

[0015] By adopting the above scheme, through the power-assisted starting mechanism, when the wind speed is low, the spiral blades rotate before the vertical blades due to their smaller mass and better wind resistance. The starting mechanism transmits the rotational force of the spiral blades to the generator main shaft, thereby reducing the wind speed threshold for the vertical blades to drive the generator main shaft to rotate.

[0016] Further, the power-assisted starting mechanism includes a connecting assembly arranged on the rotating platform;

[0017] The connecting assembly includes a cylinder arranged on the main shaft of the generator, a cylindrical cavity is arranged in the cylinder, a sliding rod 1 is arranged at the center of the cylindrical cavity, a sliding cavity 1 is arranged on the bottom surface of the rotating rod, the sliding cavity 1 is rotatably sleeved on the sliding rod 1, a rotating column is arranged at the bottom end of the rotating rod, a plurality of rotating shafts 1 are arranged in an equiangular annular array in the cylindrical cavity of the cylinder, the rotating shaft 1 is rotatably connected to the cylinder, a rubber layer is sleeved on the shaft wall of the rotating shaft 1, and arc-shaped micro-pits are arranged in an annular pattern on the column wall of the rotating column, and the arc-shaped micro-pits are in contact with the rubber layer.

[0018] By adopting the above scheme, a connecting component is set up, and multiple arc-shaped micro-pits on the rotating column continuously impact the rubber layer, so that the rotating column transfers a part of the rotational force to the cylinder, and transfers the rotational force of the spiral blade to the generator main shaft, thereby reducing the wind speed threshold for the vertical blades to drive the generator main shaft to rotate.

[0019] Furthermore, the number of the arc-shaped micro-pits is twice that of the rotation axis.

[0020] By adopting the above solution, more arc-shaped micro-pits are provided, so that the rotating column can transmit more rotational force to the cylinder.

[0021] Further, the power-assisted starting mechanism includes a clutch assembly disposed on the rotating table;

[0022] The clutch assembly includes a cylindrical shell that is arranged on a rotating table and located outside a cylinder. A plurality of rotating shafts 2 are arranged in an equiangular annular array inside the cylindrical shell. The rotating shafts 2 are rotatably connected to the rotating table. A rotating handle is fixedly connected to the rotating shaft 2. A locking head is fixedly connected to the end of the rotating handle. A locking groove that matches the shape of the locking head is provided on the cylindrical wall of the cylinder. A spring is abutted between the rotating handle and the inner wall of the cylindrical shell. A sliding rod 2 is provided at the end of the generator main shaft. A sliding cavity 2 is provided on the bottom surface of the cylinder. The sliding cavity 2 is rotatably sleeved on the sliding rod 2.

[0023] By adopting the above scheme, a clutch assembly is set up, and when the rotation speed of the vertical blade reaches a stable power generation, the rotation force of the spiral blade is interrupted from being transmitted to the generator main shaft, so as to avoid the spiral blade and the vertical blade rotating at different speeds, which affects the power generation efficiency.

[0024] Furthermore, the upper end surface of the cylinder is provided with an end cover 1, and the upper end surface of the cylindrical shell is provided with an end cover 2.

[0025] By adopting the above scheme, the connection component and the clutch component are protected and maintained by providing the end cover 1 and the end cover 2.

[0026] Furthermore, thrust bearings are provided between the contact surface of the cylinder and the rotating platform, and between the cylinder and the rotating column.

[0027] By adopting the above solution, the thrust bearing is provided to reduce the sliding friction between the contact surface of the cylinder and the rotating table and between the cylinder and the rotating column.

[0028] Furthermore, the cross-section of the vertical blade is wing-shaped.

[0029] With the above solution, the shape of the wing is a curve with a convex upper surface and a flat lower surface. When the airflow passes through the airfoil, the airflow speed on the upper surface is higher. According to the Bernoulli principle, the air pressure on the upper surface is lower and the air pressure on the lower surface is higher, thereby generating an upward lift. In a wind turbine, this lift principle is used to generate a rotational force to enable the wind wheel to rotate.

[0030] Furthermore, both ends of the rotating shaft 1 are provided with shaft hole 1, both ends of the rotating shaft 2 are provided with shaft hole 2, and both ends of the spring are provided with fixing holes.

[0031] By adopting the above scheme, the first and second rotating shafts are rotated along the fixed shaft through the first and second shaft holes and the fixed hole, so that the spring is fixed between the cylindrical shell and the rotating handle.

[0032] Furthermore, an energy storage device is provided on the base.

[0033] By adopting the above scheme, the electric energy converted by the generator is stored through the energy storage device.

[0034] Beneficial effects of the present invention:

[0035] Through the power-assisted starting mechanism, when the wind speed is low, the spiral blades rotate before the vertical blades due to their smaller mass and better wind resistance. The starting mechanism transmits the rotational force of the spiral blades to the generator main shaft, reducing the wind speed threshold for the vertical blades to drive the generator main shaft to rotate. It has the advantages of low starting wind speed, high wind energy utilization, and low noise.

[0036] By setting up a connecting component, multiple micro-pits on the rotating column continuously hit the rubber layer, so that the rotating column transfers part of the rotational force to the cylinder, and the rotational force of the spiral blade is transferred to the generator main shaft, thereby reducing the wind speed threshold for the vertical blades to drive the generator main shaft to rotate.

[0037] By setting up a clutch assembly, when the rotation speed of the vertical blades reaches a stable power generation, the rotation force of the spiral blades is interrupted from being transmitted to the generator main shaft, avoiding the spiral blades and the vertical blades rotating at different speeds, which affects the power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A three-dimensional diagram of a vertical axis wind turbine with energy-saving and efficiency-enhancing functions according to the present invention;

[0039] Figure 2 A top view of a vertical axis wind turbine with energy-saving and efficiency-enhancing functions according to the present invention;

[0040] Figure 3 For the present invention Figure 2 Sectional view at AA;

[0041] Figure 4 For the present invention Figure 3 Enlarged view of point D in the middle;

[0042] Figure 5 For the present invention Figure 3 Sectional view at the middle BB;

[0043] Figure 6 For the present invention Figure 3 Sectional view at CC;

[0044] Figure 7 It is an exploded view of the power-assisted starting mechanism in the vertical axis wind turbine with energy-saving and efficiency-enhancing functions of the present invention;

[0045] Figure 8 For the present invention Figure 7 other perspectives.

[0046] In the figure:

[0047] 1. Base; 2. Support rod; 3. Generator; 4. Turntable; 5. Support frame; 6. Vertical blade; 7. Power-assisted starting mechanism; 8. Turntable; 9. Round table; 10. Support plate; 11. Spiral blade; 12. Ejector; 13. Cylinder; 14. Slide bar 1; 15. Slide cavity 1; 16. Turntable; 17. Turntable shaft 1; 18. Rubber layer; 19. Arc pit; 20. Cylindrical shell; 21. Turntable shaft 2; 22. Turntable handle; 23. Snap-fit ​​head; 24. Snap-fit ​​groove; 25. Spring; 26. Slide bar 2; 27. Slide cavity 2; 28. End cover 1; 29. ​​End cover 2; 30. Thrust bearing; 31. Shaft hole 1; 32. Shaft hole 2; 33. Fixing hole; 34. Energy storage device. DETAILED DESCRIPTION

[0048] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0049] Example, see Figure 1-8, which is the first embodiment of the present invention, provides a vertical axis wind turbine 3 with energy-saving and efficiency-enhancing functions, including a base 1, a support rod 2 arranged on the base 1, and a generator 3 arranged on the support rod 2. A rotating table 4 is fixed on the main shaft of the generator 3, and a plurality of groups of support frames 5 are connected to the rotating table 4 in an equiangular circular array, and a group of vertical blades 6 are fixed to each group of support frames 5; an assist starting mechanism 7 is arranged on the rotating table 4, and a rotating rod 8 is rotatably connected to the assist starting mechanism 7, and a round table 9 is arranged at the end of the rotating rod 8, and a plurality of groups of support plates 10 are arranged at both ends of the round table 9, and a spiral blade 11 is arranged between each group of support plates 10, and a top pin 12 is arranged at the top of the round table 9; the assist starting mechanism 7 is used to transmit the rotational force of the spiral blade 11 to the main shaft of the generator 3.

[0050] Specifically, multiple groups of vertical blades 6 require a higher wind speed to start, and sometimes an auxiliary starting mechanism is required; the spiral blades 11 are responsible for providing pre-rotational force for the vertical blades 6. When the wind speed is low, the torque generated by the blades is not enough to overcome the static friction and inertia of the wind wheel, making it difficult for the vertical blades 6 to start by themselves.

[0051] The blades of the Darrieus type wind turbine 3 are subjected to asymmetric forces at different positions. When the wind rotor is stationary, this asymmetry does not generate enough initial rotation torque to start the wind rotor. The function of the auxiliary starting mechanism 7 is:

[0052] Providing initial power: The power-assisted starting mechanism 7 can provide the necessary initial power under low wind speed conditions to start the wind wheel to rotate. Common auxiliary starting mechanisms include small electric motors, pneumatic motors or mechanical starting devices; Improving starting efficiency: Through the power-assisted starting mechanism 7, the wind turbine 3 can quickly reach a certain speed, thereby effectively utilizing the lift principle and improving the overall starting efficiency; Optimizing wind energy utilization: Under low wind speed conditions, the power-assisted starting mechanism 7 can ensure that the wind turbine 3 starts working as soon as possible, thereby optimizing the utilization of wind energy and improving the overall performance and power generation efficiency of the system.

[0053] Through the power-assisted starting mechanism 7, when the wind speed is low, the spiral blade 11 rotates before the vertical blade 6 due to its smaller mass and better wind resistance. The power-assisted starting mechanism 7 transmits the rotational force of the spiral blade 11 to the main shaft of the generator 3, thereby reducing the wind speed threshold at which the vertical blade 6 drives the main shaft of the generator 3 to rotate.

[0054] Reference Figure 3-Figure 4 and Figure 6The power-assisted starting mechanism 7 includes a connecting assembly arranged on the rotating table 4; the connecting assembly includes a cylinder 13 arranged on the main shaft of the generator 3, a cylindrical cavity is arranged in the cylinder 13, a sliding rod 14 is arranged at the center of the cylindrical cavity, a sliding cavity 15 is arranged on the bottom surface of the rotating rod 8, the sliding cavity 15 is rotatably sleeved on the sliding rod 14, a rotating column 16 is arranged at the bottom end of the rotating rod 8, and a plurality of rotating shafts 17 are arranged in an equiangular annular array in the cylindrical cavity of the cylinder 13, the rotating shaft 17 is rotatably connected to the cylinder 13, a rubber layer 18 is sleeved on the shaft wall of the rotating shaft 17, and arc-shaped micro-pits 19 are arranged in an annular manner on the column wall of the rotating column 16, and the arc-shaped micro-pits 19 are in contact with the rubber layer 18.

[0055] Specifically, the spiral blade 11 is easy to rotate at low wind speeds, and the rotating column 16 is driven to rotate by the rotating rod 8. The multiple arc-shaped micro-pits 19 on the rotating column 16 squeeze the rubber layer 18 during the rotation process to provide a rotational force to the cylinder 13. The advantage of this design is that the rotation of the spiral blade 11 will not be affected by the static friction and inertia of the vertical blade 6. It can rotate at a relatively low wind speed to provide a rotational force for the cylinder 13. As the wind speed increases, the rotation speed of the rotating column 16 increases, the impact frequency of the arc-shaped micro-pits 19 on the rubber layer 18 increases, and the rotational torque of the cylinder 13 increases, which will continuously reduce the initial rotational torque required for the vertical blade 6 to rotate until the vertical blade 6 starts to rotate to generate electricity.

[0056] By setting a connecting component, the multiple arc-shaped micro-pits 19 on the rotating column 16 continuously impact the rubber layer 18, so that the rotating column 16 transfers a part of the rotational force to the cylinder 13, and transfers the rotational force of the spiral blade 11 to the main shaft of the generator 3, thereby reducing the wind speed threshold for the vertical blade 6 to drive the main shaft of the generator 3 to rotate.

[0057] Reference Figure 6 The number of arc-shaped micro-pits 19 is twice that of the rotating axis 17.

[0058] By providing more arc-shaped micro-pits 19 , the rotating column 16 can transmit more rotational force to the cylindrical body 13 .

[0059] Reference Figure 3-Figure 5The power-assisted starting mechanism 7 includes a clutch assembly arranged on the rotating table 4; the clutch assembly includes a cylindrical shell 20 fixed on the rotating table 4 and located outside the cylinder 13, and a plurality of rotating shafts 21 are arranged in an equiangular annular array in the cylindrical shell 20, and the rotating shaft 21 is rotatably connected to the rotating table 4, and a rotating handle 22 is fixedly connected to the rotating shaft 21, and a clamping head 23 is fixedly connected to the end of the rotating handle 22, and a clamping groove 24 matching the shape of the clamping head 23 is provided on the column wall of the cylinder 13, and a spring 25 is abutted between the rotating handle 22 and the inner wall of the cylindrical shell 20, and a sliding rod 26 is provided at the end of the main shaft of the generator 3, and a sliding cavity 27 is provided on the bottom surface of the cylinder 13, and the sliding cavity 27 is rotatably sleeved on the sliding rod 26.

[0060] Specifically, the clutch assembly is used to interrupt the rotation assistance of the spiral blade 11 to the vertical blade 6 when the vertical blade 6 starts to rotate and reaches a certain speed. When the vertical blade 6 starts to rotate and reaches a certain speed, due to the action of centrifugal force, the rotating handle 22 revolves around the rotating shaft 21, and the rotating handle 22 squeezes the spring 25 at the same time, and the engaging head 23 disengages from the engaging groove 24, so that the transmission between the cylinder 13 and the rotating table 4 is interrupted, so that the cylinder 13 can rotate freely relative to the rotating table 4, and the sliding cavity 27 is rotatably sleeved on the sliding rod 26, and the top of the sliding rod is set to be an arc shape, which is also to reduce the sliding friction between the cylinder 13 and the rotating table 4.

[0061] Once the vertical blades 6 start to rotate and reach a certain speed, the wind turbine 3 can continue to rotate by relying on the lift generated by the wind, and the power-assisted starting mechanism 7 needs to stop intervening. This is mainly due to the following reasons: Reduce mechanical stress: Under low wind speed conditions, the rotation speed of the wind wheel is low, and the power-assisted starting mechanism 7 needs to provide a large torque to overcome static friction and inertia. Once the wind wheel starts to self-sustaining rotation, the demand for this large torque is reduced. If the power-assisted starting mechanism 7 continues to work, it will increase the stress of the mechanical system and may cause damage to key components such as the vertical blades 6, bearings, and transmission systems; Extend the life of the equipment: Reducing the duration of the power-assisted starting mechanism 7 can extend its service life and reduce the cost of maintenance and replacement. The role of the power-assisted starting mechanism 7 is critical at low wind speeds, but it does not need to work continuously at high wind speeds. By starting only when necessary, the reliability and safety of the system can be improved.

[0062] By setting a clutch assembly, when the rotation speed of the vertical blade 6 reaches a stable power generation, the rotation force of the spiral blade 11 is interrupted from being transmitted to the main shaft of the generator 3, so as to avoid the spiral blade 11 and the vertical blade 6 rotating at different speeds, which affects the power generation efficiency.

[0063] Reference Figure 4 The upper end surface of the cylinder 13 is provided with an end cover 1 28 , and the upper end surface of the cylindrical shell 20 is provided with an end cover 29 .

[0064] By providing the end cover 1 28 and the end cover 29, the connection assembly and the clutch assembly are protected and maintained.

[0065] Reference Figure 4 Thrust bearings 30 are provided between the contact surface of the cylinder 13 and the rotating table 4 and between the cylinder 13 and the rotating column 16 .

[0066] By providing the thrust bearing 30 , the sliding friction between the contact surface of the cylinder 13 and the rotating table 4 and between the cylinder 13 and the rotating column 16 is reduced.

[0067] Reference Figure 2 The cross section of the vertical blade 6 is an airfoil shape, and the shape of the airfoil is a curve with a convex upper surface and a flat lower surface. When the airflow passes through the airfoil, the airflow velocity on the upper surface is higher. According to the Bernoulli principle, the air pressure on the upper surface is lower and the air pressure on the lower surface is higher, thereby generating an upward lift. In the wind turbine 3, this lift principle is used to generate a rotational force to enable the wind wheel to rotate.

[0068] Reference Figure 4 Both ends of the rotating shaft 17 are provided with shaft holes 1 31 , both ends of the rotating shaft 21 are provided with shaft holes 2 32 , and both ends of the spring 25 are provided with fixing holes 33 .

[0069] Through the shaft hole 1 31 , the shaft hole 2 32 and the fixing hole 33 , the rotating shaft 1 17 and the rotating shaft 21 are rotated along the fixing axis, so that the spring 25 is fixed between the cylindrical shell 20 and the rotating handle 22 .

[0070] Reference Figure 1 , an energy storage device 34 is provided on the base 1.

[0071] The electric energy converted by the generator 3 is stored by the energy storage device 34 .

[0072] Working principle of the present invention:

[0073] When the wind speed is low, the torque generated by the blades is not enough to overcome the static friction and inertia of the wind wheel, making it difficult for the vertical blades 6 to start by themselves. Since the spiral blades 11 have a smaller mass and better wind resistance, they rotate before the vertical blades 6, and the rotating column 16 is driven to rotate by the rotating rod 8. During the rotation process, the multiple arc-shaped micro-pits 19 on the rotating column 16 squeeze the rubber layer 18, providing a rotational force to the cylinder 13. As the wind speed increases, the rotation speed of the rotating column 16 increases, the impact frequency of the arc-shaped micro-pits 19 on the rubber layer 18 increases, and the rotational torque of the cylinder 13 increases, which will continuously reduce the initial rotational torque required for the vertical blades 6 to rotate until the vertical blades 6 start to rotate to generate electricity; when the vertical blades 6 start to rotate and reach a certain speed, due to the action of centrifugal force, the rotating handle 22 revolves around the rotating shaft 21, and the rotating handle 22 squeezes the spring 25 at the same time, and the engaging head 23 disengages from the engaging groove 24, so that the transmission between the cylinder 13 and the rotating table 4 is interrupted, and the auxiliary starting mechanism 7 stops intervening.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A vertical axis wind turbine with energy-saving and efficiency-enhancing functions, comprising a base (1), a support rod (2) arranged on the base (1), and a generator (3) arranged on the support rod (2), characterized in that: A rotating platform (4) is fixed on the main shaft of the generator (3), and a plurality of groups of support frames (5) are connected to the rotating platform (4) in an equiangular circular array, and a group of vertical blades (6) is fixed on each group of the support frames (5); The rotating table (4) is provided with an assisting starting mechanism (7), the assisting starting mechanism (7) is rotatably connected to a rotating rod (8), a round table (9) is provided at the end of the rotating rod (8), a plurality of groups of supporting plates (10) are provided at both ends of the round table (9), a spiral blade (11) is provided between each group of supporting plates (10), and a top pin (12) is provided at the top of the round table (9); The power-assisted starting mechanism (7) is used to transmit the rotational force of the spiral blade (11) to the main shaft of the generator (3); The assist starting mechanism (7) comprises a connecting assembly arranged on the rotating platform (4); The connection assembly comprises a cylinder (13) arranged on the main shaft of the generator (3), a cylindrical cavity being arranged in the cylinder (13), a sliding rod (14) being arranged at the center of the cylindrical cavity, a sliding cavity (15) being arranged on the bottom surface of the rotating rod (8), the sliding cavity (15) being rotatably sleeved on the sliding rod (14), a rotating column (16) being arranged at the bottom end of the rotating rod (8), a plurality of rotating shafts (17) being arranged in an equiangular annular array in the cylindrical cavity of the cylinder (13), the rotating shaft (17) being rotatably connected to the cylinder (13), a rubber layer (18) being sleeved on the shaft wall of the rotating shaft (17), arc-shaped micro-pits (19) being arranged in an annular pattern on the shaft wall of the rotating column (16), the arc-shaped micro-pits (19) being in contact with the rubber layer (18); The power-assisted starting mechanism (7) comprises a clutch assembly arranged on the rotating platform (4); The clutch assembly comprises a cylindrical shell (20) which is arranged on a rotating platform (4) and located outside a cylindrical body (13); a plurality of rotating shafts (21) are arranged in an equiangular annular array inside the cylindrical shell (20); the rotating shafts (21) are rotatably connected to the rotating platform (4); a rotating handle (22) is fixedly connected to the rotating shaft (21); a clamping head (23) is fixedly connected to the end of the rotating handle (22); a clamping groove (24) matching the shape of the clamping head (23) is provided on the cylindrical wall of the cylindrical body (13); a spring (25) is abutted between the rotating handle (22) and the inner wall of the cylindrical shell (20); a sliding rod (26) is provided at the end of the main shaft of the generator (3); a sliding cavity (27) is provided on the bottom surface of the cylindrical body (13); and the sliding cavity (27) is rotatably sleeved on the sliding rod (26).

2. The vertical axis wind turbine with energy-saving and efficiency-enhancing function according to claim 1 is characterized in that: The number of the arc-shaped micro-pits (19) is twice that of the first rotating shaft (17).

3. The vertical axis wind turbine with energy-saving and efficiency-enhancing function according to claim 1 is characterized in that: The upper end surface of the cylinder (13) is provided with an end cover 1 (28), and the upper end surface of the cylindrical shell (20) is provided with an end cover 2 (29).

4. The vertical axis wind turbine with energy-saving and efficiency-enhancing function according to claim 1 is characterized in that: Thrust bearings (30) are provided between the contact surfaces of the cylinder (13) and the rotating platform (4), and between the cylinder (13) and the rotating column (16).

5. The vertical axis wind turbine with energy-saving and efficiency-enhancing function according to claim 1 is characterized in that: The cross section of the vertical blade (6) is in the shape of an airfoil.

6. The vertical axis wind turbine with energy-saving and efficiency-enhancing function according to claim 4 is characterized in that: Both ends of the rotating shaft 1 (17) are provided with shaft holes 1 (31), both ends of the rotating shaft 2 (21) are provided with shaft holes 2 (32), and both ends of the spring (25) are provided with fixing holes (33).

7. The vertical axis wind turbine with energy-saving and efficiency-enhancing function according to claim 1, characterized in that: An energy storage device (34) is provided on the base (1).

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