Vertical axis wind power generation system

Abstract

A vertical axis wind power generation system relates to the technical field of wind power generation and comprises a wind power input shaft, a step-up gear box and a plurality of generators. The wind power input shaft is in transmission connection with an input part of the step-up gear box, the step-up gear box is provided with a plurality of output parts in transmission connection with the input part, and the plurality of output parts are respectively in transmission connection with the plurality of generators. And all the generators are positioned above the step-up gear box. A power dividing operation mode is adopted, a single generator is started at low wind speed, the resistance of a transmission system is reduced, and low-wind-speed power generation is achieved; when the wind speed is high, the multiple generators are started, so that the power generation system can bear more loads, wind energy at the high wind speed is better collected, and the energy utilization rate is improved.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and more specifically, to a vertical axis wind power generation system. Background Technology

[0002] Currently, most vertical axis wind power systems use direct-drive motors, with each system matched with a single generator. In high-wind-speed environments, this can easily exceed the capacity limits of the generator and speed increaser, requiring braking. Therefore, power generation cannot occur during periods of maximum wind speed, otherwise, damage to the speed increaser or motor may result, leading to low power generation efficiency. Furthermore, in some scenarios, a small number of power systems use a generator paired with a planetary gearbox speed increaser. During assembly, the generator is located below the planetary gearbox. After prolonged operation, metal shavings from wear within the planetary gearbox can easily settle onto the oil seal below, causing seal failure. This allows lubricating oil to leak into the motor, ultimately leading to gearbox and motor failure. Summary of the Invention

[0003] The objectives of this invention include, for example, providing a vertical axis wind power generation system that can employ power splitting, starting a single generator at low wind speeds to reduce transmission system resistance and achieve low wind speed power generation; and starting multiple generators at high wind speeds to enable the power generation system to withstand more loads, better collect wind energy at high wind speeds, and improve energy utilization.

[0004] The embodiments of the present invention can be implemented as follows: In a first aspect, the present invention provides a vertical axis wind power generation system, comprising: The wind power input shaft, the speed-increasing gearbox, and multiple generators are included; the wind power input shaft is driven to the input section of the speed-increasing gearbox, the speed-increasing gearbox has multiple output sections driven to the input section, and the multiple output sections are driven to the multiple generators respectively. All of the generators are located above the speed-increasing gearbox.

[0005] In an optional embodiment, the wind power input shaft has an input end and a connecting end, the input end being inserted inside the speed-increasing gearbox, and the connecting end being located outside the speed-increasing gearbox and used for mounting blades; The plurality of generators are all located on the side of the speed-increasing gearbox near the connection end.

[0006] In an alternative implementation, a plurality of the generators are arranged at intervals around the wind power input shaft.

[0007] In an optional embodiment, the speed-increasing gearbox includes a connected housing and a housing cover, the housing being used to connect to the tower base; the input end passes through the housing cover and extends into the housing body, and the wind power input shaft is rotatably connected to both the housing body and the housing cover; the output portion of the speed-increasing gearbox passes through the housing cover. Multiple generators are mounted on the enclosure cover.

[0008] In an optional embodiment, the speed-increasing gearbox further includes a large gear and a plurality of small gears, both of which are mounted in the gearbox housing, and the large gear meshes with the plurality of small gears simultaneously. The large gear is sleeved and fixed outside the wind power input shaft; the multiple small gears are respectively connected to the multiple generators for transmission.

[0009] In an optional embodiment, the speed-increasing gearbox further includes a first speed-increasing gear mechanism, through which the large gear is connected to the small gear via the first speed-increasing gear mechanism.

[0010] In an optional implementation, the first speed-increasing gear mechanism is configured as a planetary gear transmission mechanism or a cylindrical gear transmission mechanism.

[0011] In an optional embodiment, the speed-increasing gearbox further includes a second speed-increasing gear mechanism, through which the wind power input shaft is connected to the large gear via the second speed-increasing gear mechanism.

[0012] In an optional embodiment, the speed-increasing gearbox further includes a third speed-increasing gear mechanism, through which the pinion is connected to the generator via the third speed-increasing gear mechanism.

[0013] In an optional embodiment, a weight-reducing groove is provided on the side of the box body away from the box cover; an outward folded edge is provided on the edge of the box body away from the box cover, and a plurality of fixing holes are provided on the outward folded edge, which is used to connect with the tower base.

[0014] The beneficial effects of the embodiments of the present invention are at least as follows: The vertical axis wind power generation system provided in this embodiment, by configuring multiple generators, can select the corresponding number of engine assemblies to operate according to demand, thereby making reasonable use of wind power. It can adapt to the usage needs of different scenarios, making it flexible and widely applicable. Specifically, when the wind speed is low, one or some generators can be selected to operate, reducing transmission system resistance and transmission energy consumption, achieving low-wind-speed power generation; when the wind speed is high, more or even all of the generators can be started, enabling the power generation system to withstand a greater load, better collect wind energy at high wind speeds, improve wind energy utilization, and increase power generation. At the same time, since all generators are located above the speed increaser gearbox, there is no risk of iron filings from wear inside the speed increaser gearbox damaging the oil seals, nor is there any risk of iron filings entering the generator and damaging it during oil leakage, ensuring safe and reliable operation of the entire machine. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the vertical axis wind power generation system provided in this embodiment; Figure 2 This is a partial structural schematic diagram of the vertical axis wind power generation system provided in this embodiment; Figure 3 This is a cross-sectional structural diagram of a portion of the vertical axis wind power generation system provided in this embodiment. Figure 4 This is a schematic diagram of the structure of a first modified example of the speed-increasing gearbox provided in this embodiment; Figure 5 This is a schematic diagram of the structure of a second modified example of the speed-increasing gearbox provided in this embodiment; Figure 6 A schematic diagram of the third modified example of the speed-increasing gearbox provided in this embodiment; Figure 7 A simplified structural diagram of the first embodiment of the vertical axis wind power generation system provided in this example; Figure 8 A simplified structural diagram of the second embodiment of the vertical axis wind power generation system provided in this example; Figure 9 A simplified structural diagram of the third embodiment of the vertical axis wind power generation system provided in this example; Figure 10A simplified structural diagram of the fourth embodiment of the vertical axis wind power generation system provided in this embodiment; Figure 11 A simplified structural diagram of the fifth embodiment of the vertical axis wind power generation system provided in this embodiment; Figure 12 A simplified structural diagram of the sixth embodiment of the vertical axis wind power generation system provided in this embodiment; Figure 13 A simplified structural diagram of the seventh embodiment of the vertical axis wind power generation system provided in this embodiment; Figure 14 This is a simplified structural diagram of the eighth embodiment of the vertical axis wind power generation system provided in this example.

[0017] icon: 100-Wind power input shaft; 110-Input end; 120-Connecting end; 200-Speed ​​gearbox; 210-Box body; 211-Weight reduction groove; 212-Outward folded edge; 220-Box cover; 221-First mounting hole; 222-Second mounting hole; 230-Large gear; 240-Small gear; 250-First speed-increasing gear mechanism; 251-Transmission gear shaft; 252-Transmission gear; 260-Second speed-increasing gear mechanism; 261-Planet carrier; 262-Planet gear; 263-Sun gear; 264-Ring gear housing; 270-Third speed-increasing gear mechanism; 300-Generator; 400-Support base; 500-Blade; 600-Tower base. Detailed Implementation

[0018] 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 embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0022] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0023] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0024] Please refer to Figures 1-2 This embodiment provides a vertical axis wind power generation system, which includes a wind turbine input shaft 100, a speed-increasing gearbox 200, and multiple generators 300. The wind turbine input shaft 100 is drivenly connected to the input section of the speed-increasing gearbox 200, which has multiple output sections drivenly connected to the input section. Each output section is drivenly connected to one of the multiple generators 300. All generators 300 are located above the speed-increasing gearbox 200.

[0025] As described above, the working principle of the vertical axis wind power generation system provided in this embodiment is as follows: Before operation, the speed-increasing gearbox 200 is connected to the tower base 600, allowing the wind power input shaft 100 to extend vertically. Blades 500 are installed at the top of the wind power input shaft 100. Under wind power, the blades 500 rotate, transmitting torque to the wind power input shaft 100. The rotational speed of the wind power input shaft 100 is increased by the speed-increasing gearbox 200 and ultimately transmitted to the generator 300, which then generates electricity.

[0026] It should be understood that by configuring multiple generators 300, the corresponding number of engine assemblies can be selected to operate according to demand, thereby making reasonable use of wind power. This allows for adaptation to different usage scenarios, offering flexibility and a wide range of applications. In other words, when the wind speed is low, one or only some of the generators 300 can be selected to operate, reducing transmission system resistance and transmission energy consumption, thus achieving power generation at low wind speeds. When the wind speed is high, more or even all of the generators 300 can be started, enabling the power generation system to withstand a greater load, better collect wind energy at high wind speeds, improve wind energy utilization, and increase power generation.

[0027] It should be understood that the operating state of generator 300 can be controlled on demand. When generator 300 needs to operate, speed-increasing gearbox 200 can transmit torque to generator 300 through its output section, allowing generator 300 to operate normally and generate electricity. When generator 300 does not need to operate, it can be allowed to idle, or the output section can be disconnected from generator 300 using a clutch device, preventing generator 300 from generating electricity and generating no load. For example, generator 300 can be an excitation generator; without an input excitation current, it will only idle and will not generate electricity.

[0028] The following embodiments illustrate the details of the vertical axis wind power generation system of this application by way of example.

[0029] Please refer to Figures 1-3 In this embodiment, optionally, the vertical axis wind power generation system includes a wind input shaft 100, a speed-increasing gearbox 200, multiple generators 300, a support base 400, blades 500, and a tower base 600. One end of the wind input shaft 100 is drivenly connected to the speed-increasing gearbox 200, and the other end is fixedly connected to the support base 400. The support base 400 is connected to the blades 500. The bottom of the speed-increasing gearbox 200 is fixedly connected to the tower base 600. The multiple generators 300 are all installed on the side of the speed-increasing gearbox 200 away from the tower base 600, and the multiple generators 300 are drivenly connected to multiple output parts of the speed-increasing gearbox 200. The blades 500 can rotate under the action of wind, thereby driving the wind input shaft 100 to rotate around its own axis. After the speed is adjusted by the speed-increasing gearbox 200, it can drive the corresponding generator 300 to work, thereby generating electricity using the generator 300.

[0030] It should be understood that the number of generators 300 is designed as needed, and no specific limit is made in this embodiment.

[0031] Optionally, the speed-increasing gearbox 200 includes a housing 210, a cover 220, a large gear 230, and multiple small gears 240. The cover 220 can be fixedly connected to the housing 210 by bolts or other structural components, and both the large gear 230 and the small gears 240 can be installed inside the housing 210.

[0032] Optionally, the bottom of the enclosure 210 is closed, while the top is open. A weight-reducing groove 211, arranged in a ring around the central axis of the enclosure 210, is provided on the outer bottom edge of the enclosure 210. Simultaneously, an outward-flared flange 212 is provided on the outer bottom edge of the enclosure 210, with multiple fixing holes spaced apart along the circumference of the enclosure 210. Each fixing hole can accommodate a bolt, and multiple bolts can be used to fix the enclosure 210 to the tower base 600.

[0033] Optionally, the cover 220 is provided with a first mounting hole 221 and multiple second mounting holes 222. Both the first mounting hole 221 and the second mounting hole 222 can be circular holes. The multiple second mounting holes 222 are evenly spaced around the axis of the first mounting hole 221. The number of second mounting holes 222 is equal to the number of generators 300, or the number of first mounting holes 221 is greater than the number of generators 300, ensuring that multiple generators 300 can be simultaneously configured on the speed-increasing gearbox 200.

[0034] Optionally, the wind power input shaft 100 has an input end 110 and a connecting end 120. During assembly, the wind power input shaft 100 is vertically positioned with the input end 110 passing through the first mounting hole 221. The wind power input shaft 100 is rotatably connected to the housing 210 via bearings. Simultaneously, the large gear 230 serves as the input part of the speed-increasing gearbox 200, and is sleeved on the outside of the wind power input shaft 100; the two can be fixedly connected via a key structure. The small gear 240 serves as the output part of the speed-increasing gearbox 200. The small gear 240 is rotatably connected to the housing 210 via bearings, and each small gear 240 corresponds to a second mounting hole 222. Multiple small gears 240 can have their axles inserted into the corresponding second mounting holes 222, facilitating the transmission connection between the small gears 240 and the generator 300. The connecting end 120 and the support base 400 can be fixedly connected via bolts or other structural components.

[0035] It should be understood that a clutch can be installed between the pinion 240 and the generator 300, and the connection state between the pinion 240 and the generator 300 can be switched by the state of the clutch. For example, when the clutch is engaged, the pinion 240 can transmit torque to the generator 300, and the generator 300 can work normally; or, when the clutch is disengaged, the pinion 240 is disconnected from the generator 300, and the generator 300 cannot work normally, thus allowing the number of generators 300 that can work normally to be selected according to the wind force.

[0036] In addition, an oil seal can be provided between the wind power input shaft 100 and the first mounting hole 221, and an oil seal can also be provided between the pinion 240 and the second mounting hole 222, thereby improving the sealing performance.

[0037] Optionally, the generator 300 can be fixed to the housing cover 220 using bolts or other structural components. The generator 300 is located on the side of the speed-increasing gearbox 200 near the connection end 120 of the wind power input shaft 100. Multiple generators 300 are evenly spaced around the wind power input shaft 100, resulting in a reasonable arrangement and more stable force distribution. Furthermore, when the speed-increasing gearbox 200 is fixedly connected to the tower base 600 via the housing 210, the generator 300 is positioned above the speed-increasing gearbox 200. This prevents iron filings from wear inside the speed-increasing gearbox 200 from damaging the oil seal, and also prevents iron filings from entering the generator 300 and damaging it during oil leakage, ensuring safe and reliable operation.

[0038] Please refer to Figure 4 In other embodiments, optionally, the speed-increasing gearbox 200 further includes a first speed-increasing gear mechanism 250, through which the large gear 230 is connected to the small gear 240 via the first speed-increasing gear mechanism 250. The first speed-increasing gear mechanism 250 can be a planetary gear transmission mechanism or a cylindrical gear transmission mechanism, etc.

[0039] Please continue to refer to this. Figure 4 When the first speed-increasing gear mechanism 250 is configured as a cylindrical gear transmission mechanism, the cylindrical gear transmission mechanism includes a transmission gear shaft and a transmission gear arranged coaxially. The shaft of the transmission gear shaft passes through the transmission gear, and the transmission gear shaft and transmission gear are fixedly connected and can rotate synchronously. Both ends of the shaft of the transmission gear shaft are rotatably connected to the housing. The large gear meshes with the transmission gear shaft, and the transmission gear meshes with the small gear.

[0040] Please refer to Figure 5 In other embodiments, optionally, the speed-increasing gearbox 200 further includes a second speed-increasing gear mechanism 260, through which the wind power input shaft 100 is connected to the large gear 230 via the second speed-increasing gear mechanism 260. The second speed-increasing gear mechanism 260 can be a planetary gear transmission mechanism or a cylindrical gear transmission mechanism, etc.

[0041] Please continue to refer to this. Figure 5When the second speed-increasing gear mechanism 260 is configured as a planetary gear transmission mechanism, it includes a planet carrier, planet gears, a sun gear, and a ring gear housing. The planet carrier is rotatably mounted inside the ring gear housing, which is fixedly connected to the top of the housing. The connecting end of the wind power input shaft passes through the top of the ring gear housing and is fixedly connected to the planet carrier, while the input end of the wind power input shaft extends out of the top of the ring gear housing. Multiple planet gears can be present, each rotatably mounted on the planet carrier via corresponding pins. These planet gears are evenly spaced around the axis of the planet carrier and are located inside the ring gear housing, meshing with it. One end of the sun gear extends into the ring gear housing and meshes with multiple planet gears simultaneously. The other end of the sun gear extends into the housing, and it is rotatably connected to both the ring gear housing and the housing via multiple bearings. A large gear is sleeved around the sun gear and is coaxially and fixedly connected to it. When the wind power input shaft rotates, it drives the planetary carrier to rotate. Multiple planetary gears revolve around the axis of the planetary carrier, and with the cooperation of the gear ring housing, each planetary gear rotates around its own axis. This rotation of the planetary gears drives the sun gear to rotate, and the rotation of the sun gear drives the large gear to rotate, thereby inputting torque to the speed-increasing gearbox.

[0042] Please refer to Figure 6 In other embodiments, optionally, the speed-increasing gearbox 200 further includes a third speed-increasing gear mechanism 270, through which the pinion 240 is connected to the generator 300 for transmission. The third speed-increasing gear mechanism 270 can be a planetary gear transmission mechanism or a cylindrical gear transmission mechanism, etc.

[0043] It should be understood that in some embodiments, the structure connecting each pinion 240 to its corresponding generator 300 is designed according to requirements. The connection structures of all pinions 240 and their corresponding generators 300 can be the same or different, providing flexibility to meet the needs of different scenarios. For example, some pinions 240 can be directly connected to the generator 300, some pinions 240 can be connected to the generator 300 through a planetary gear transmission mechanism, and some pinions 240 can be connected to the generator 300 through a cylindrical gear transmission mechanism, etc.

[0044] Please refer to Figure 7 For example, in a first alternative embodiment, the fan blade input shaft is directly connected to the large gear 230, the large gear 230 is directly connected to the small gear 240, and the small gear 240 is directly connected to the generator 300.

[0045] Please refer to Figure 8 In the second optional embodiment, the fan blade input shaft is directly connected to the large gear 230, the large gear 230 is connected to the small gear 240 through a cylindrical gear transmission mechanism, and the small gear 240 is directly connected to the generator 300.

[0046] Please refer to Figure 9 In the third optional embodiment, the fan blade input shaft is connected to the large gear 230 via a planetary gear transmission mechanism, the large gear 230 is directly connected to the small gear 240, and the small gear 240 is directly connected to the generator 300.

[0047] Please refer to Figure 10 In the fourth optional embodiment, the fan blade input shaft is connected to the large gear 230 via a planetary gear transmission mechanism, the large gear 230 is connected to the small gear 240 via a cylindrical gear transmission mechanism, and the small gear 240 is directly connected to the generator 300.

[0048] Please refer to Figure 11 In the fifth optional embodiment, the fan blade input shaft is directly connected to the large gear 230, the large gear 230 is directly connected to the small gear 240, and the small gear 240 is connected to the generator 300 through a planetary gear transmission mechanism.

[0049] Please refer to Figure 12 In the sixth optional embodiment, the fan blade input shaft is directly connected to the large gear 230, the large gear 230 is connected to the small gear 240 through a cylindrical gear transmission mechanism, and the small gear 240 is connected to the generator 300 through a planetary gear transmission mechanism.

[0050] Please refer to Figure 13 In the seventh optional embodiment, the fan blade input shaft is connected to the large gear 230 via a planetary gear transmission mechanism, the large gear 230 is directly connected to the small gear 240, and the small gear 240 is connected to the generator 300 via a planetary gear transmission mechanism.

[0051] Please refer to Figure 14 In the eighth optional embodiment, the fan blade input shaft is connected to the large gear 230 via a planetary gear transmission mechanism, the large gear 230 is connected to the small gear 240 via a cylindrical gear transmission mechanism, and the small gear 240 is connected to the generator 300 via a planetary gear transmission mechanism.

[0052] The vertical axis wind power generation system provided in this embodiment adopts a configuration of generator 300 and speed-increasing gearbox 200, with the generator 300 positioned above the speed-increasing gearbox 200. This prevents iron filings from wear within the speed-increasing gearbox 200 from damaging the oil seal. Furthermore, the speed-increasing gearbox 200 can be matched with multiple generators 300, employing a power splitting method. At low wind speeds, a single generator 300 is started, reducing transmission system resistance and achieving power generation at low wind speeds. At high wind speeds, multiple generators 300 are started, enabling the power generation system to withstand a greater load and better collect wind energy at high wind speeds.

[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A vertical axis wind power generation system, characterized in that, include: The wind power input shaft (100), the speed-increasing gearbox (200), and a plurality of generators (300) are included. The wind power input shaft (100) is driven to the input part of the speed-increasing gearbox (200), and the speed-increasing gearbox (200) has a plurality of output parts that are driven to the input part. The plurality of output parts are driven to the plurality of generators (300) respectively. All of the generators (300) are located above the speed-increasing gearbox.

2. The vertical axis wind power generation system according to claim 1, characterized in that: The wind power input shaft (100) has an input end (110) and a connecting end (120). The input end (110) is inserted inside the speed-increasing gearbox (200), and the connecting end (120) is located outside the speed-increasing gearbox (200) and is used to install blades (500). The plurality of generators (300) are all located on the side of the speed-increasing gearbox (200) near the connection end (120).

3. The vertical axis wind power generation system according to claim 2, characterized in that: Multiple generators (300) are arranged at intervals around the wind power input shaft (100).

4. The vertical axis wind power generation system according to claim 2, characterized in that: The speed-increasing gearbox (200) includes a connected housing (210) and a housing cover (220). The housing (210) is used to connect to the tower base (600). The input end (110) passes through the housing cover (220) and extends into the housing (210). The wind power input shaft (100) is rotatably connected to both the housing (210) and the housing cover (220). The output of the speed-increasing gearbox (200) passes through the housing cover (220). Multiple generators (300) are mounted on the housing cover (220).

5. The vertical axis wind power generation system according to claim 4, characterized in that: The speed-increasing gearbox (200) also includes a large gear (230) and a plurality of small gears (240), the large gear (230) and the plurality of small gears (240) are all installed in the housing (210), and the large gear (230) meshes with the plurality of small gears (240) at the same time; The large gear (230) is sleeved and fixed outside the wind power input shaft (100); the multiple small gears (240) are respectively connected to the multiple generators (300) for transmission.

6. The vertical axis wind power generation system according to claim 5, characterized in that: The speed-increasing gearbox (200) also includes a first speed-increasing gear mechanism (250), through which the large gear (230) is connected to the small gear (240) via the first speed-increasing gear mechanism (250).

7. The vertical axis wind power generation system according to claim 6, characterized in that: The first speed-increasing gear mechanism (250) is configured as a planetary gear transmission mechanism or a cylindrical gear transmission mechanism.

8. The vertical axis wind power generation system according to claim 5, characterized in that: The speed-increasing gearbox (200) also includes a second speed-increasing gear mechanism (260), and the wind power input shaft (100) is connected to the large gear (230) through the second speed-increasing gear mechanism (260).

9. The vertical axis wind power generation system according to claim 5, characterized in that: The speed-increasing gearbox (200) also includes a third speed-increasing gear mechanism (270), through which the pinion (240) is connected to the generator (300) via the third speed-increasing gear mechanism (270).

10. The vertical axis wind power generation system according to any one of claims 4-9, characterized in that: The box body (210) is provided with a weight reduction groove (211) on the side away from the box cover (220); the box body (210) is provided with an outward folded edge (212) on the edge away from the box cover (220), and the outward folded edge (212) is provided with a plurality of fixing holes, and the outward folded edge (212) is used to connect with the tower base (600).

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