A split adaptive wind power generator

Abstract

The application belongs to the field of wind power generation and specifically relates to a separated self-adaptive wind power generator, which comprises a base, a resistance rotating shaft and a lift rotating shaft which are sequentially sleeved in a fixed shaft, an upper bevel gear and a lower bevel gear which are meshed with each other are arranged at the top of the lift rotating shaft, a sliding block is arranged on the outer side of the lower bevel gear, a protection device is arranged on the lift rotating shaft, a plurality of speed reduction blocks are arranged on the protection plate in a shaft connection mode, and the other end of the speed reduction block is connected with the protection sleeve through a speed reduction spring; a sliding groove is arranged on the resistance rotating shaft, the sliding block moves in the sliding groove, and a limiting groove is arranged on the sliding groove; the bottom of the lower bevel gear is connected with a supporting ring through a limiting spring, a speed reduction groove is arranged on the inner wall of the resistance rotating shaft, and the speed reduction groove corresponds to the position of the speed reduction block. The wind power generator can automatically separate or combine the lift fan blade and the resistance fan blade according to the rotating speed, thereby avoiding the hysteresis of the resistance fan blade during high-speed rotation and preventing the fan blade from rotating too fast to cause equipment damage.

Description

Technical Field

[0001] This invention belongs to the field of wind power generation, and specifically relates to a split adaptive wind turbine. Background Technology

[0002] A wind turbine is a device that converts wind energy into electrical energy. Its working principle is based on the wind driving the wind turbine blades to rotate, and then the generator converts mechanical energy into electrical energy. Generally speaking, a wind turbine mainly includes a wind turbine (blades), nacelle, tower, generator and control system. Its working principle includes the following steps: (1) Wind energy capture: The wind turbine blades rotate under the action of wind, converting wind energy into mechanical energy; (2) Mechanical energy transmission: The rotation of the wind turbine blades is transmitted to the gearbox through the main shaft. The gearbox converts low-speed rotation into high-speed rotation to meet the needs of the generator; (3) Electrical energy generation: The high-speed rotating shaft drives the generator to convert mechanical energy into electrical energy; Electrical energy transmission: The generated electrical energy is stepped up by the transformer and then transmitted to the power grid or directly supplied to users. The entire device is monitored and regulated by the control system to monitor parameters such as wind speed, wind direction, and generator speed, and adjust the blade angle and generator load according to these parameters to optimize power generation efficiency and ensure safe operation of the equipment. When the wind speed is too high, the control system will activate the braking device to prevent the blade speed from being too fast and causing equipment damage. The entire process involves the coordinated work of multiple key components and systems to ultimately achieve efficient and clean energy conversion. Wind turbines play a vital role in the renewable energy sector, helping to reduce dependence on fossil fuels and lower greenhouse gas emissions.

[0003] Traditional wind turbines are horizontal axis wind turbines (HAWT), while the emerging vertical axis wind turbines (VAWT) are wind power generation devices that use a vertical axis for rotation. Compared with traditional horizontal axis wind turbines (HAWT), VAWT has unique design and application advantages, such as strong adaptability and the ability to operate normally in any wind direction, simple and flexible installation and maintenance, and a wider range of applications.

[0004] Most current vertical axis wind turbines employ a combination of lift-type (Dubois type) and drag-type (Savini type) turbines to improve overall output power. However, each type of blade has its advantages and disadvantages. Drag-type turbines have lower requirements for wind speed during startup, but also a lower upper speed limit, making it difficult to exceed wind speed. Lift-type turbines, on the other hand, are difficult to start in weak wind conditions due to unstable blade angle of attack. Once started, the airfoil-like blade configuration allows them to continuously increase speed, far exceeding wind speed, resulting in high output power. Combining the two in series solves the startup problem of lift-type turbines, but during continuous acceleration, the drag-type turbine exhibits lag at high speeds, negatively impacting the combined turbine's power output. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a separate adaptive wind turbine generator. This wind turbine generator can automatically separate or combine lift-type blades and drag-type blades according to the rotational speed. This avoids the lag of drag-type blades when operating at high speeds and ensures that the blades operate within the allowable range of the generator speed, preventing the blades from rotating too fast and causing equipment damage.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a split adaptive wind turbine generator, including a base, a fixed shaft arranged above the base, a drag generator and a lift generator arranged inside the fixed shaft, a drag shaft and a lift shaft sequentially mounted inside the fixed shaft, the ends of the drag shaft and the lift shaft near the base being connected to the drag generator and the lift generator respectively, a drag fan blade connected to the drag shaft, and a lift fan blade connected to the lift shaft.

[0007] At the top of the lifting shaft, there are meshing upper and lower helical gears. A slider is provided on the outside of the lower helical gear. A protective device is provided on the lifting shaft between the upper and lower ends of the lifting fan blades. The protective device is fitted onto the outside of the lifting shaft by a protective sleeve. A protective plate is provided around the outside of the side wall of the protective sleeve. Several speed reduction blocks are axially connected to the protective plate. The other end of the speed reduction blocks is connected to the protective sleeve by a speed reduction spring.

[0008] A groove is provided on the inner wall of the top end of the resistance shaft, which is aligned with the length direction of the resistance shaft. The slider of the lower helical gear moves in the groove. A limiting groove extending in the rotation direction of the resistance shaft is provided on the groove. A support ring extending radially towards the center is provided inside the resistance shaft at the lower part of the lower helical gear. The bottom of the lower helical gear is connected to the support ring by a limiting spring. A deceleration groove recessed into the resistance shaft is provided on the inner wall of the resistance shaft. The deceleration groove corresponds to the position of the deceleration block in the protection device on the lifting shaft.

[0009] When stationary, the limit spring is in its natural state, the upper and lower helical gears are tightly meshed together, the slider of the lower helical gear is located in the groove, and the lifting shaft and the resistance shaft are connected together.

[0010] When the speed of the lifting shaft reaches the upper limit of the resistance fan blade speed, the limiting spring is compressed, the slider on the outside of the lower helical gear moves into the limiting groove, the upper and lower helical gears separate, the lifting shaft and the resistance shaft disengage, and they rotate independently.

[0011] When the fan blade speed of the lifting shaft is lower than the preset speed threshold limit, the deceleration spring in the protection device is in the natural state, and the deceleration block is located inside the protection plate; when the fan blade speed of the lifting shaft is greater than or equal to the preset speed threshold limit, the deceleration spring in the protection device is in the stretched state, and the deceleration block extends out of the protection plate and is inserted into the deceleration groove of the resistance shaft.

[0012] Preferably, the lift shaft is fitted inside the drag shaft, and the drag shaft is fitted inside the fixed shaft.

[0013] Preferably, both the upper helical gear and the lower helical gear are helical gears.

[0014] Preferably, the protection device has eight deceleration blocks evenly spaced on it.

[0015] Preferably, the inner wall of the resistance shaft is provided with eight deceleration grooves at uniform intervals, and each groove cooperates with a deceleration block.

[0016] Preferably, the size of the limiting groove is the same as the size of the slider.

[0017] Preferably, the lower helical gear is connected to the lifting shaft via a ball bearing, and the protective sleeve is connected to the lifting shaft via a ball bearing.

[0018] Preferably, four sliders are provided on the outer side of the lower helical gear, and four grooves corresponding to the sliders are provided at the corresponding positions of the resistance shaft.

[0019] Preferably, there is a distance between the side of the protective plate of the protective device and the inner wall of the resistance shaft.

[0020] The beneficial effects of this invention are as follows: Based on the rotational speed relationship between the lift blades and the drag blades, the generator adaptively separates or connects the lift shaft and the drag shaft, fully utilizing the advantages of the drag blades' easy start and the lift blades' high rotational speed, thus avoiding the drag blades' lag at high speeds and affecting power generation efficiency. Based on the relationship between the lift blades and a preset upper speed threshold, when the lift blades rotate too fast, the protection device connects the lift shaft and the drag shaft together, using the drag blades' lag to slow down the lift blades, preventing excessive blade rotation and equipment damage. Therefore, this wind turbine can flexibly and adaptively determine the separation and connection relationship between the lift shaft and the drag shaft according to the blade rotational speed relationship to achieve the purpose of speed increase and decrease, thereby improving power generation efficiency and ensuring safe operation of the equipment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3This is a schematic diagram of the resistance shaft in this invention; Figure 4 This is a schematic diagram of the lifting shaft in this invention; Figure 5 This is a schematic diagram of the internal structure of the resistance shaft in this invention; Figure 6 This is a schematic diagram of the protective device in this invention; Figure 7 This is a diagram showing the working state of the protection device in this invention; Figure 8 This is a schematic diagram of the slide groove in this invention; Figure 9 This is a schematic diagram of the lower helical gear in this invention; Figure 10 This is a schematic diagram of the structure of the lower helical gear embedded in the limiting groove in this invention.

[0022] Figure label: 1. Base; 2. Fixed shaft; 3. Resistance generator; 4. Lift generator; 5. Resistance shaft; 6. Lift shaft; 7. Resistance fan blade; 8. Lift fan blade; 9. Upper helical gear; 10. Lower helical gear; 11. Slider; 12. Protective device; 121. Protective sleeve; 122. Protective plate; 123. Speed ​​reduction block; 124. Speed ​​reduction spring; 13. Slide groove; 14. Limiting groove; 15. Support ring; 16. Speed ​​reduction groove; 17. Limiting spring; 18. Ball bearing; 19. Fixed column. Detailed Implementation

[0023] The present invention will now be further described with reference to the accompanying drawings. The following embodiments are only used to illustrate the structure of the present invention more clearly.

[0024] like Figure 1 and Figure 2 As shown, a split adaptive wind turbine includes a base 1, a fixed shaft 2 is arranged above the base 1, a drag generator 3 and a lift generator 4 are arranged inside the fixed shaft 2, a drag shaft 5 and a lift shaft 6 are sequentially installed inside the fixed shaft 2, the ends of the drag shaft 5 and the lift shaft 6 near the base 1 are respectively connected to the drag generator 3 and the lift generator 4, a drag blade 7 is connected to the drag shaft 5, and a lift blade 8 is connected to the lift shaft 6.

[0025] The lift shaft 6 is fitted inside the drag shaft 5, which is fitted inside the fixed shaft 2; and the drag fan blade 7 is located inside the lift fan blade 8.

[0026] An upper helical gear 9 and a lower helical gear 10 are provided at the top of the lifting shaft 6, meshing with each other. A slider 11 is provided on the outer side of the lower helical gear 10. A protective device 12 is provided on the lifting shaft 6 between the upper and lower ends of the lifting fan blade 8. The protective device 12 is fitted onto the outside of the lifting shaft 6 through a protective sleeve 121. A protective plate 122 is provided around the outer side wall of the protective sleeve 121. Several deceleration blocks 123 are axially connected to the protective plate 122. The other end of the deceleration block 123 is connected to the protective sleeve 121 through a deceleration spring 124.

[0027] In this invention, both the upper helical gear 9 and the lower helical gear 10 are helical gears, and helical gears include inclined surfaces and right-angled surfaces. The separation or connection of the upper helical gear 9 and the lower helical gear 10 is achieved by determining whether the connecting surfaces of these two gears are right-angled surfaces or inclined surfaces. When stationary and when the rotational speed of the resistance fan blade 7 is greater than or equal to the rotational speed of the lift fan blade 8, the inclined surfaces and right-angled surfaces of the two gears are tightly engaged, with the right-angled surfaces bearing the main force. However, when the rotational speed of the lift fan blade 8 exceeds that of the resistance fan blade 7, the force on the inclined surfaces gradually increases, and the area of ​​the inclined surfaces engaging between the upper and lower helical gears 10 gradually decreases, forcing the lower helical gear 10 to gradually move downwards until the two completely separate.

[0028] like Figure 3 and Figure 4 , Figure 5 As shown, a groove 13 is provided on the inner wall of the top end of the resistance shaft 5, which is aligned with the length direction of the resistance shaft 5. The slider 11 of the lower helical gear 10 moves in the groove 13. A limiting groove 14 extending in the rotation direction of the resistance shaft 5 is provided on the groove 13. A support ring 15 extending radially towards the center is provided inside the resistance shaft 5 at the lower part of the lower helical gear 10. The bottom of the lower helical gear 10 is connected to the support ring 15 through a limiting spring 17. A deceleration groove 16 recessed into the resistance shaft is provided on the inner wall of the resistance shaft 5. The deceleration groove 16 corresponds to the position of the deceleration block 123 in the protection device 12 on the lifting shaft 6.

[0029] To ensure that the resistance shaft 5 and the lift shaft 6 remain separated after the resistance shaft 5 and the lift shaft 6 are separated when the speed exceeds the upper limit of the rotation speed of the resistance shaft 5, a sliding groove 13 is provided on the inner wall of the resistance shaft 5. A limiting groove 14 is provided in the sliding groove 13. As the outer side of the lower helical gear 10 moves downward, the slider 11 also moves downward in the sliding groove 13 until it reaches the position of the limiting groove 14. Under the action of the rotational torque, the slider 11 enters the limiting groove 14 and is locked in that position, so that the resistance shaft 5 and the lift shaft 6 remain separated. This avoids the lag of the resistance shaft 5 from affecting the rotation speed of the lift shaft 6, thereby improving the power generation efficiency. Meanwhile, in order to ensure that the resistance shaft 5 and the lifting shaft 6 can be connected together when the speed is below the upper limit of the resistance shaft 5, a limit spring 17 is provided below the lower helical gear 10. One end of the limit spring 17 is connected to the lower helical gear 10, and the other end is connected to the support ring 15 on the inner wall of the resistance shaft 5. When the speed of the lifting shaft 6 is lower than the speed of the resistance shaft 5, the opposite force causes the slider 11 to disengage from the slide groove 13. Under the elastic action of the limit spring 17, the lower helical gear 10 gradually moves upward, and the upper helical gear 9 and the lower helical gear 10 gradually mesh together again, and the resistance shaft 5 drives the lifting shaft 6 to rotate together.

[0030] Obviously, as Figure 8-10 As shown, the size of the limiting groove 14 is the same as the size of the slider 11. Four sliders 11 are provided on the outside of the lower helical gear 10. Four grooves 13 corresponding to the sliders 11 are provided at the corresponding positions of the resistance shaft 5.

[0031] Regarding the states of the limiting spring 17 and the deceleration spring 124: When the fan is stationary, the limiting spring 17 is in its natural state, the upper helical gear 9 and the lower helical gear 10 are tightly meshed together, the slider 11 of the lower helical gear 10 is located in the groove 13, and the lifting shaft 6 and the resistance shaft 5 are connected together. When the rotational speed of the lifting shaft 6 reaches the upper limit of the rotational speed of the resistance fan blade 7, the limiting spring 17 is compressed, the slider 11 on the outside of the lower helical gear 10 moves into the limiting groove 14, the upper helical gear 9 and the lower helical gear 10 separate, and the lifting shaft 6 and the resistance shaft 5 disengage and rotate independently. When the fan blade rotational speed of the lifting shaft 6 is lower than the preset upper limit of the rotational speed threshold, the deceleration spring 124 in the protection device 12 is in its natural state, and the deceleration block 123 is located in the protection plate 122; when the fan blade rotational speed of the lifting shaft 6 is greater than or equal to the preset upper limit of the rotational speed threshold, the deceleration spring 124 in the protection device 12 is in a stretched state, and the deceleration block 123 extends out of the protection plate 122 and is engaged in the deceleration groove 16 of the resistance shaft 5.

[0032] Among them, such as Figure 6 and Figure 7 As shown, the protection device 12 is provided with eight deceleration blocks 123 at uniform intervals, and the inner wall of the resistance shaft 5 is provided with eight deceleration grooves 16 at uniform intervals, which cooperate with the deceleration blocks 123 one by one.

[0033] During the operation of a wind turbine, excessively high rotational speed can damage the equipment, thus requiring a protection device 12. When the rotational speed of the lift blade 8 does not exceed the preset speed threshold, the centrifugal force on the deceleration block 123 of the protection device 12 is insufficient to overcome the elastic force of the deceleration spring 124 to extend beyond the range of the protection plate 122, and therefore it will not extend, with the lift shaft 6 and the resistance shaft 5 rotating independently. However, when the rotational speed of the lift blade 8 exceeds the preset speed threshold, the centrifugal force on the deceleration block 123 of the protection device 12 is greater than the elastic force of the deceleration spring 124 connected to it. The deceleration block 123 extends radially towards the resistance shaft 5 from the protection plate 122 and enters the deceleration groove 16 provided on the inner wall of the resistance shaft 5. The lift shaft 6 and the resistance shaft 5 then connect together and rotate together. The hysteresis performance of the resistance shaft 5 effectively reduces the rotational speed of the lift shaft 6, thereby achieving the purpose of speed reduction and preventing excessively high rotational speed from damaging the equipment.

[0034] Therefore, when the speed of the lift fan blade 8 is less than the speed of the drag fan blade 7 and the speed of the lift fan blade 8 is greater than the upper limit of the preset speed threshold, the lift shaft 6 and the drag shaft 5 are connected together and rotate together. The differences are as follows: (1) When the speed of the lifting fan blade 8 is less than that of the resistance fan blade 7, the lifting shaft 6 and the resistance shaft 5 are connected by the meshing of the upper helical gear 9 and the lower helical gear 10 and the locking of the lower helical gear 10 and the slide groove 13. At this time, the speed of the resistance shaft 5 is faster, which drives the lifting shaft 6 to rotate. The speed of the lifting shaft 6 is faster and faster, realizing the acceleration function, until it exceeds the maximum speed of the resistance shaft 5 and the two are separated; (2) When the speed of the lifting fan blade 8 is greater than the upper limit of the preset speed threshold, the lifting shaft 6 and the resistance shaft 5 are connected by the locking of the deceleration block 123 of the protection device 12 on the lifting shaft 6 and the deceleration groove 16 on the resistance shaft 5. At this time, since the speed of the resistance shaft 5 is slower, it hinders the rotation of the lifting shaft 6. The speed of the lifting shaft 6 is slower and slower, realizing the deceleration function, until the speed of the lifting shaft 6 is lower than the upper limit of the preset speed threshold and the lifting shaft 6 can rotate safely.

[0035] The operation process of this invention is as follows: (1) When starting, the resistance fan blade 7 rotates faster and plays a dominant role. The right-angle surfaces of the upper helical gear 9 and the lower helical gear 10 are tightly engaged, driving the lifting fan blade 8 to rotate; (2) When the speed of the resistance fan blade 7 and the lifting fan blade 8 increases to the maximum speed of the resistance fan blade 7, the resistance fan blade 7 can no longer accelerate, but the lifting fan blade 8 continues to accelerate. At this time, the upper helical gear 9 and the lower helical gear 10 gradually move relative to each other along the meshing inclined surface. The area of ​​the meshing inclined surface gradually decreases, and the lower helical gear 10 is gradually pressed downward. The limiting spring 17 connected to the lower helical gear 10 is also... Compress until the upper helical gear 9 and the lower helical gear 10 are completely disengaged, and the slider 11 on the outside of the lower helical gear 10 is engaged in the limiting groove 14. At this time, the resistance fan blade 7 and the lift fan blade 8 are completely disengaged and no longer rotate together; (3) When the speed of the lift fan blade 8 is maintained between the maximum speed of the resistance fan blade 7 and the upper limit of the preset speed threshold, the resistance shaft 5 and the lift shaft 6 are disengaged and rotate independently. Since the resistance shaft 5 and the lift shaft 6 are respectively connected to the resistance generator 3 and the lift generator 4, both can generate electricity; (4) When the speed of the lift fan blade 8 is small When the resistance fan blade 7 rotates at a certain speed, the upper helical gear 9 connected to the lifting shaft 6 and the lower helical gear 10 connected to the resistance shaft 5 via the slider 11 and the slide groove 13 move relative to each other, causing the slider 11 of the lower helical gear 10 to slide out of the limiting groove 14 on the resistance shaft and enter the slide groove 13. Under the action of the limiting spring 17, it moves upward. The upper helical gear 9 and the lower helical gear 10 mesh again through the inclined surface. As the speed gradually decreases, the area of ​​the meshing inclined surface gradually increases until it meshes through the right angle surface. At this time, the lifting shaft 6 is completely driven to rotate by the resistance shaft 5; (5) When the lifting ... moves relative to each other. When the rotational speed of blade 8 exceeds the preset speed threshold, it needs to be reduced. At this time, the upper helical gear 9 and the lower helical gear 10 are completely disengaged. However, under the action of centrifugal force, the deceleration block 123 of the protection device 12 on the lifting shaft 6 stretches the deceleration spring 124, causing the deceleration block 123 to enter the deceleration groove 16 on the inner wall of the resistance shaft 5. The lifting shaft 6 and the resistance shaft 5 rotate together again. The speed of the resistance shaft 5 is slower, which reduces the speed of the lifting shaft 6 and ensures the safe operation of the equipment. During this process, both the lifting shaft 6 and the resistance shaft 5 are connected to their respective generators to generate electricity. The power generation efficiency is the highest at this time.

[0036] In summary, by engaging and disengaging the upper helical gear 9 and the lower helical gear 10, and by engaging and disengaging the reduction block 123 and the reduction groove 16 in the protection device 12, the coordinated rotation relationship between the lift shaft 6 and the resistance shaft 5 can be adjusted according to the speed, thereby increasing the power of the fan and providing overload protection.

[0037] In this invention, the principle of relative motion between the upper helical gear 9 and the lower helical gear 10 is as follows: the upper helical gear 9 is connected to the lifting shaft 6, and the lifting fan blade 8 drives the lifting shaft 6 to move, which in turn drives the upper helical gear 9 to move; the lower helical gear 10 is connected to the sliding groove 13 on the inner wall of the resistance shaft 5 through the slider 11, and the resistance fan blade 7 drives the resistance shaft 5 to move, which in turn drives the lower helical gear 10 to move; therefore, the meshing surface between the upper helical gear 9 and the lower helical gear 10 is mainly affected by the rotational speed of the lifting fan blade 8 and the resistance fan blade 7.

[0038] like Figure 4 As shown, the principle of the slider 11 of the lower helical gear 10 moving in and out of the groove 13 on the inner wall of the resistance shaft 5 is as follows: As the lower helical gear 10 is gradually pressed down, the limiting spring 17 is gradually compressed and moves downward to the vertical position of the limiting groove 14. Since the inner wall of the lower helical gear 10 is connected to the lifting shaft 6 through the ball bearing 18, the lifting shaft 6 will give the lower helical gear 10 a small counterclockwise torque, thereby pushing the slider 11 of the lower helical gear 10 to move horizontally and embed into the limiting groove 14, so as to limit the rebound of the limiting spring 17. When the speed of the lifting blades drops below that of the resistance blades, the speed of the upper helical gear 9 decreases further, thus slowing down the speed of the lifting shaft 6. Therefore, for the lower helical gear 10, its outer wall is connected to the resistance shaft 5 via the slider 11 and the groove 13, while its inner wall is connected to the lifting shaft 6 via the ball bearing 18. This means that the speed of its outer wall should be greater than that of its inner wall. Consequently, the outer wall of the lower helical gear 10 is subjected to a clockwise torque, causing the slider 11 to disengage from the groove 13. The meshing surfaces of the upper helical gear 9 and the lower helical gear 10 are on the inclined plane, and the area of ​​the meshing inclined plane gradually increases as the speed decreases. Simultaneously, under the action of the rebound force of the limiting spring 17, the lower helical gear 10 moves upward in the groove 13 until the lower helical gear 10 and the upper helical gear 9 mesh at right angles and rotate together.

[0039] The ball bearing 18 connection between the lower helical gear 10 and the lift shaft 6 is designed to reduce energy loss. When the resistance blade 7 and the lift blade 8 rotate independently, the lower helical gear 10, connected to the outer wall of the resistance shaft 5, rotates at a slower speed than the lower gear connected to the inner wall of the lift shaft 6. However, the ball bearing 18 connects the inner wall of the lower helical gear 10 and the lift shaft 6, significantly reducing the resistance from the outer wall. Therefore, the resistance blade 7 has virtually no impact on the speed of the lift blade 8, and both rotate independently, generating electricity. To minimize energy loss, the lower helical gear 10 and the lift shaft 6 should be connected using a ball bearing 18 with the lowest possible damping.

[0040] like Figure 6 and Figure 7As shown, the protective device 12 of the present invention has eight speed reduction blocks 123 evenly arranged inside. One end of each speed reduction block 123 is fixed to the protective plate 122 by a fixing post 19, and can rotate around the fixing post 19, i.e., the speed reduction block 123 and the protective plate 122 are axially connected; the other end of the speed reduction block 123 is connected to the protective sleeve 121 of the protective device 12 by a speed reduction spring 124. Obviously, there is a distance between the protective plate 122 and the inner wall of the resistance shaft 5. When the speed of the lift fan blade 8 is less than the upper limit of the preset speed threshold, there is no contact between the protective device 12 and the resistance shaft 5. Regarding the deceleration spring 124, when the lifting shaft 6 is stationary, the deceleration spring 124 is in its natural state. When the lifting shaft 6 rotates, the deceleration block 123 is subjected to centrifugal force and rotates towards the inner wall of the resistance shaft 5. At the same time, the deceleration block 123 is also constrained by the elastic force of the deceleration spring 124. The two forces are in opposite directions. The faster the speed of the lifting fan blade 8, the greater the centrifugal force on the deceleration block 123, and the closer it is to the deceleration groove 16. Until the speed of the lifting fan blade 8 reaches the upper limit of the preset speed threshold, the deceleration spring 124 is stretched, the deceleration block 123 is embedded in the deceleration groove 16, and is driven to rotate by the resistance shaft 5, thereby reducing the speed of the lifting shaft 6 and playing a braking role.

[0041] Since the protective device 12 is connected to the lifting shaft 6 via the protective sleeve 121 through the ball bearing 18, a ball bearing 18 with greater damping is used to achieve a better deceleration effect.

[0042] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A split adaptive wind turbine generator, comprising a base, a fixed shaft disposed above the base, and a drag generator and a lift generator disposed within the fixed shaft, characterized in that: The fixed shaft is internally fitted with a resistance shaft and a lift shaft. The ends of the resistance shaft and the lift shaft near the base are respectively connected to a resistance generator and a lift generator. A resistance fan blade is connected to the resistance shaft, and a lift fan blade is connected to the lift shaft. At the top of the lifting shaft, there are meshing upper and lower helical gears. A slider is provided on the outside of the lower helical gear. A protective device is provided on the lifting shaft. The protective device is fitted onto the outside of the lifting shaft through a protective sleeve. A protective plate is provided around the outside of the side wall of the protective sleeve. Several speed reduction blocks are axially connected to the protective plate. The other end of the speed reduction blocks is connected to the protective sleeve through a speed reduction spring. A groove is provided on the inner wall of the top end of the resistance shaft, which is aligned with the length direction of the resistance shaft. The slider of the lower helical gear moves in the groove. A limiting groove is provided on the groove, which extends in the rotation direction of the resistance shaft. A support ring is provided inside the resistance shaft at the lower part of the lower helical gear, which extends radially toward the center. The bottom of the lower helical gear is connected to the support ring by a limiting spring. A deceleration groove is provided on the inner wall of the resistance shaft, which is recessed into the resistance shaft. The deceleration groove corresponds to the position of the deceleration block in the protection device on the lifting shaft. When stationary, the limit spring is in its natural state, the upper and lower helical gears are tightly meshed together, the slider of the lower helical gear is located in the groove, and the lifting shaft and the resistance shaft are connected together. When the speed of the lifting shaft reaches the upper limit of the resistance fan blade speed, the limit spring is compressed, the slider outside the lower helical gear moves into the limit groove, the upper and lower helical gears separate, the lifting shaft and the resistance shaft disengage, and they rotate independently. When the speed of the fan blades of the lifting shaft is lower than the upper limit of the preset speed threshold, the deceleration spring in the protection device is in the natural state and the deceleration block is located inside the protection plate; when the speed of the fan blades of the lifting shaft is greater than or equal to the upper limit of the preset speed threshold, the deceleration spring in the protection device is in the stretched state, and the deceleration block extends out of the protection plate and is inserted into the deceleration groove of the resistance shaft. The lift shaft is fitted inside the drag shaft, and the drag shaft is fitted inside the fixed shaft.

2. A split-type adaptive wind turbine generator according to claim 1, characterized in that: Both the upper and lower helical gears are helical gears.

3. A split-type adaptive wind turbine generator according to claim 1, characterized in that: The protection device has eight speed reduction blocks evenly spaced on it.

4. A split adaptive wind turbine generator according to claim 3, characterized in that: The inner wall of the resistance shaft is provided with eight deceleration grooves at even intervals, and each groove is matched with a deceleration block.

5. A split-type adaptive wind turbine generator according to claim 1, characterized in that: The dimensions of the limiting groove are the same as the dimensions of the slider.

6. A split-type adaptive wind turbine generator according to claim 1, characterized in that: The lower helical gear is connected to the lifting shaft via a ball bearing, and the protective sleeve of the protective device is connected to the lifting shaft via a ball bearing.

7. A split-type adaptive wind turbine generator according to claim 1, characterized in that: Four sliders are provided on the outer side of the lower helical gear, and four grooves corresponding to the sliders are provided at the corresponding positions of the resistance shaft.

8. A split-type adaptive wind turbine generator according to claim 1, characterized in that: There is a distance between the side of the protective plate of the protective device and the inner wall of the resistance shaft.

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