Telescopic vertical axis wind turbine

Abstract

The invention relates to the technical field of wind power generation, and particularly discloses a telescopic vertical axis wind turbine which comprises a main shaft, a transmission assembly and a plurality of blades. The transmission assembly comprises an upper sleeve, a lower sleeve, an upper driver and a lower driver; the upper sleeve is movably arranged on the main shaft in the first direction. The lower sleeve is movably arranged on the main shaft in the first direction. The upper driver is connected with the upper sleeve and used for driving the upper sleeve to move in the first direction. The lower driver is connected with the lower sleeve and used for driving the lower sleeve to move in the first direction. The blades are distributed around the circumference of the main shaft; each blade comprises a blade plate and a scissor fork mechanism; an upper sleeve and a lower sleeve are respectively hinged to the upper end and the lower end of one side of the scissors fork mechanism; the upper end and the lower end of the other side of the shear fork mechanism are hinged to leaf plates. According to the scheme, the upper sleeve and the lower sleeve can move in the first direction, so that the radius of the blade can be changed, the position of the blade in the first direction can also be changed, and the adaptive working condition of the wind turbine is improved.

Description

Technical Field

[0001] This application relates to the technical field of wind power generation, and particularly relates to a telescopic vertical axis wind turbine. Background Art

[0002] A wind turbine is a device that converts wind energy into mechanical energy and then into electrical energy through a generator. Generally, a wind turbine includes an impeller, a main shaft, and a transmission system; the impeller includes multiple blades that can rotate around the main shaft; when the blades are driven by wind energy to rotate around the main shaft, they can convert wind energy into mechanical energy and transmit it to the transmission system through the main shaft to drive the generator to generate electricity.

[0003] A vertical axis wind turbine is a type of wind turbine, and its main shaft is arranged perpendicular to the ground (or the air flow direction). The wind energy capture efficiency of a vertical axis wind turbine is affected by its solidity. Among them, solidity refers to the ratio of the projected area of the blades on the rotation plane to the swept area of the impeller; solidity can be used to reflect the filling degree of the blades in the swept area.

[0004] Physically, the higher the solidity, the higher the proportion of the swept area covered by the blades, and the stronger the wind energy capture ability; but in actual applications, the selection of solidity also needs to consider the influence of the load of the vertical axis wind turbine. Specifically, in a low wind speed environment, the air kinetic energy is small, and a high solidity can effectively collect wind energy; in a high wind speed environment, too high a solidity will cause the wind turbine to bear excessive aerodynamic resistance, resulting in a high risk of equipment damage. In order to select the solidity according to the actual working conditions, wind turbines with adjustable solidity have been applied.

[0005] Since the swept area of the impeller is related to its radius, the existing wind turbines with adjustable solidity usually adjust the solidity by adjusting the opening or contraction of the impeller. However, this adjustment method is relatively single. In reality, the working conditions faced by wind power generation are complex and diverse. For example, in the same environment, there are still large differences in environmental factors such as air density and turbulence intensity at different heights. Therefore, the existing wind turbines with adjustable solidity can adapt to fewer working conditions. Summary of the Invention

[0006] In view of this, the purpose of this application is to provide a telescopic vertical axis wind turbine to solve the problem that the existing wind turbines with adjustable solidity can adapt to fewer working conditions.

[0007] To achieve the above technical purpose, this application provides a telescopic vertical axis wind turbine, including: a main shaft, a transmission assembly, and multiple blades;

[0008] The axial direction of the main shaft is the first direction;

[0009] The transmission assembly includes: an upper sleeve, a lower sleeve, an upper driver, and a lower driver;

[0010] The upper sleeve is movably disposed on the main shaft along the first direction;

[0011] The lower sleeve is movably disposed on the main shaft along the first direction;

[0012] The upper driver is connected to the upper sleeve and is used to drive the upper sleeve to move along the first direction;

[0013] The lower driver is connected to the lower sleeve and is used to drive the lower sleeve to move along the first direction;

[0014] A plurality of blades are circumferentially distributed around the main shaft;

[0015] The blade includes: a blade plate and a scissor mechanism;

[0016] The upper end and the lower end on one side of the scissor mechanism are respectively hinged to the upper sleeve and the lower sleeve;

[0017] The upper end and the lower end on the other side of the scissor mechanism are both hinged to the blade plate.

[0018] Further, an upper slider and a lower slider that can slide along the first direction are provided on the blade plate;

[0019] The upper end and the lower end on the other side of the scissor mechanism are respectively hinged to the upper slider and the lower slider;

[0020] An elevating driver is provided on the upper slider and / or the lower slider;

[0021] The elevating driver is used to drive the blade plate to slide along the first direction relative to the elevating driver.

[0022] Further, the transmission assembly further includes: a positioning mechanism;

[0023] A detachable hinge is provided at the lower end on one side of the scissor mechanism;

[0024] The detachable hinge can be detachably hinged to the lower sleeve;

[0025] The positioning mechanism has an unlocking state and a locking state;

[0026] In the locking state, the upper sleeve and the blade plate are synchronously lifted and lowered;

[0027] In the locking state, when the upper driver drives the upper sleeve to move closer to the lower sleeve, the detachable hinge is separated from the lower sleeve.

[0028] Further, the positioning mechanism includes: a plug pin, a plug rod, a positioning sleeve and a positioning driver;

[0029] The positioning sleeve is movably arranged on the main shaft along the first direction;

[0030] The insertion rod is arranged on the positioning sleeve;

[0031] The insertion pin is arranged on the vane plate;

[0032] An insertion pin groove opening towards the second direction is arranged on the insertion rod;

[0033] The second direction is the radial direction of the main shaft;

[0034] The positioning driver is connected to the positioning sleeve and is used to drive the positioning sleeve to move along the first direction;

[0035] In the locked state, the insertion pin is stuck inside the insertion pin groove, and the positioning driver starts and stops synchronously with the upper driver;

[0036] In the unlocked state, the insertion pin is separated from the insertion pin groove.

[0037] Furthermore, a flaring structure is arranged at the opening of the insertion pin groove.

[0038] Furthermore, the insertion rod is an electric telescopic rod.

[0039] Furthermore, a lightning rod is arranged at the top of the main shaft.

[0040] Furthermore, the detachable hinge is a J-shaped hinge with a bayonet;

[0041] A clamping post is arranged on the lower sleeve;

[0042] The bayonet of the detachable hinge can be detachably clamped with the clamping post.

[0043] Furthermore, the main shaft is a threaded shaft;

[0044] The upper driver is arranged on the upper sleeve, and the output end of the upper driver is meshed and connected with the main shaft;

[0045] The lower driver is arranged on the lower sleeve, and the output end of the lower driver is meshed and connected with the main shaft.

[0046] Furthermore, it further includes: a support column;

[0047] The main shaft is rotatably arranged on the support column.

[0048] As can be seen from the above technical solution, the present application provides a telescopic vertical-axis wind turbine, comprising: a main shaft, a transmission assembly, and a plurality of blades; the axial direction of the main shaft is the first direction; the transmission assembly includes: an upper sleeve, a lower sleeve, an upper driver, and a lower driver; the upper sleeve is movably arranged on the main shaft along the first direction; the lower sleeve is movably arranged on the main shaft along the first direction; the upper driver is connected to the upper sleeve and is used to drive the upper sleeve to move along the first direction; the lower driver is connected to the lower sleeve and is used to drive the lower sleeve to move along the first direction; the plurality of blades are circumferentially distributed around the main shaft; the blade includes: a blade plate and a scissor mechanism; the upper end and the lower end on one side of the scissor mechanism are respectively hinged to the upper sleeve and the lower sleeve; the upper end and the lower end on the other side of the scissor mechanism are both hinged to the blade plate.

[0049] In this solution, both the upper sleeve and the lower sleeve can move along the first direction, so that the blades can not only change their radius, but also change their position along the first direction, improving the working conditions that the wind turbine can adapt to. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0051] Figure 1 It is a schematic structural diagram of a telescopic vertical-axis wind turbine provided by an embodiment of the present application in a retracted state;

[0052] Figure 2 It is a schematic diagram of a telescopic vertical-axis wind turbine provided by an embodiment of the present application with the blades at a higher position in a low-solidity state;

[0053] Figure 3 It is a schematic diagram of a telescopic vertical-axis wind turbine provided by an embodiment of the present application with the blades at a lower position in a low-solidity state;

[0054] Figure 4 It is a schematic diagram of a telescopic vertical-axis wind turbine provided by an embodiment of the present application with the blades at a higher position in a high-solidity state;

[0055] Figure 5 It is a schematic diagram of a telescopic vertical-axis wind turbine provided by an embodiment of the present application with the blades at a lower position in a high-solidity state;

[0056] Figure 6An enlarged view of the position of an upper slider of a retractable vertical axis wind turbine provided in an embodiment of the present application;

[0057] Figure 7 An enlarged view of the position of a lower slider of a retractable vertical axis wind turbine provided in an embodiment of the present application;

[0058] Figure 8 An enlarged view of the position where a latch and a rod of a retractable vertical axis wind turbine are connected is provided in an embodiment of the present application;

[0059] Figure 9 A wireframe schematic diagram of the position of a telescopic motor of a telescopic vertical axis wind turbine provided in an embodiment of the present application;

[0060] In the figure:

[0061] 10. Main shaft; 11. Extension shaft; 12. Flange;

[0062] 20. Blade; 21. Blade plate; 211. Upper slider; 212. Lower slider; 213. Lifting drive; 22. Scissor mechanism; 221. Removable hinge; 222. First fork rod; 223. Second fork rod;

[0063] 30. Transmission assembly; 31. Upper sleeve; 32. Lower sleeve; 321. Clamping column; 33. Upper driver; 34. Lower driver; 35. Positioning mechanism; 351. Latch; 352. Insertion rod; 353. Positioning sleeve; 354. Latch slot; 355. Positioning driver; 356. Telescopic motor;

[0064] 40. Support column;

[0065] 50. Lightning rod; 51. End cover. DETAILED DESCRIPTION

[0066] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the specification of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection requested by the present application.

[0067] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0068] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a replaceable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0069] Please refer to Figures 1 to 5 , a telescopic vertical axis wind turbine provided in the embodiments of the present application includes: a main shaft 10, a transmission assembly 30, and a plurality of blades 20.

[0070] For the convenience of description, in the present application, the axial direction of the main shaft 10 is the first direction. In the drawings, the wind turbine is vertically placed, so the axial direction of the main shaft 10 is the vertical direction; correspondingly, the radial direction of the main shaft 10 is the horizontal direction. That is, the first direction is the vertical direction, and the second direction is the horizontal direction.

[0071] The transmission assembly 30 includes: an upper sleeve 31, a lower sleeve 32, an upper driver 33, and a lower driver 34; the upper sleeve 31 is movably disposed on the main shaft 10 along the first direction; the lower sleeve 32 is movably disposed on the main shaft 10 along the first direction; the upper driver 33 is connected to the upper sleeve 31 and is used to drive the upper sleeve 31 to move along the first direction; the lower driver 34 is connected to the lower sleeve 32 and is used to drive the lower sleeve 32 to move along the first direction.

[0072] In this embodiment, the manner in which the upper driver 33 and the lower driver 34 drive the upper sleeve 31 and the lower sleeve 32 to move up and down respectively is a prior art. For example, the upper driver 33 and the lower driver 34 are respectively air cylinders or linear motors, and the output ends thereof are respectively connected to the upper sleeve 31 and the lower sleeve 32, and drive the upper sleeve 31 and the lower sleeve 32 to move up and down by means of linear expansion and contraction, specifically, as long as the output ends thereof do not interfere with the rotating blade 20. Another example is that the upper driver 33 and the lower driver 34 are lead screw motors, and the output ends thereof are connected to lead screws that can rotate; the upper sleeve 31 and the lower sleeve 32 are respectively meshed with the two lead screws; when the upper driver 33 and the lower driver 34 are started, the lead screws can be driven to rotate so as to drive the upper sleeve 31 and the lower sleeve 32 to move up and down. In this process, the main shaft 10 plays a guiding role; and correspondingly, the lead screws are configured not to interfere with the rotating blade 20.

[0073] In an implementation manner provided in this embodiment, the main shaft 10 is a threaded shaft; the upper driver 33 is disposed on the upper sleeve 31, and the output end of the upper driver 33 is meshed and connected to the main shaft 10; the lower driver 34 is disposed on the lower sleeve 32, and the output end of the lower driver 34 is meshed and connected to the main shaft 10.

[0074] Specifically, the output end of the upper driver 33 is provided with a screw rod that meshes with the main shaft 10; the output end of the lower driver 34 is provided with a screw rod that meshes with the main shaft 10; when the upper driver 33 and the lower driver 34 are started, the upper sleeve 31 and the lower sleeve 32 can be driven to move along the axial direction of the main shaft 10 by the rotating screw rods.

[0075] It should be noted that both the upper driver 33 and the lower driver 34 can rotate forward and backward, so as to drive the upper sleeve 31 and the lower sleeve 32 to rise or fall respectively.

[0076] In this embodiment, a plurality of blades 20 are circumferentially distributed around the main shaft 10. The blade 20 includes: a blade plate 21 and a scissor mechanism 22; the upper end and the lower end on one side of the scissor mechanism 22 are respectively hinged to the upper sleeve 31 and the lower sleeve 32; the upper end and the lower end on the other side of the scissor mechanism 22 are both hinged to the blade plate 21.

[0077] Specifically, the scissor mechanism 22 refers to a cross mechanism similar to the opening and closing of scissors. In an implementation provided in this embodiment, the scissor mechanism 22 is an X-shaped cross mechanism formed by hinging the middle parts of the first fork rod 222 and the second fork rod 223. In other implementations, the scissor mechanism 22 can also be a diamond-shaped cross mechanism formed by crossing multiple fork rods. It should be noted that, as an existing telescopic mechanism, how the scissor mechanism 22 is connected to the vane 21 and realizes telescoping belongs to the prior art. For example, in this embodiment, at least one of the upper end and the lower end on the other side of the scissor mechanism 22 is slidably connected to the vane 21, so that when the upper sleeve 31 and the lower sleeve 32 approach or move away from each other, the upper end and the lower end on the other side of the scissor mechanism 22 can follow and approach or move away from each other to realize the telescoping of the scissor mechanism 22.

[0078] In this embodiment, the scissor mechanism 22 has four hinge ends, which are respectively located at the upper and lower ends on one side and the upper and lower ends on the other side. When the upper sleeve 31 and the lower sleeve 32 approach each other along the first direction, the scissor mechanism 22 extends along the second direction. At this time, the radius of the blade 20 increases and the solidity of the wind turbine decreases. When the upper sleeve 31 and the lower sleeve 32 move away from each other along the first direction, the scissor mechanism 22 contracts along the second direction. At this time, the radius of the blade 20 decreases and the solidity of the wind turbine increases.

[0079] In practical applications, when the wind speed in the environment is relatively high, the upper driver 33 and the lower driver 34 can control the scissor mechanism 22 to extend, as Figure 2 and Figure 3 shown, and select the height of the vane 21 by controlling the lifting of the upper sleeve 31 and the lower sleeve 32 according to the actual wind speed.

[0080] When the wind speed in the environment is relatively low, the upper driver 33 and the lower driver 34 can control the scissor mechanism 22 to contract, as Figure 4 shown, and select the height of the vane 21 by controlling the lifting of the upper sleeve 31 and the lower sleeve 32 according to the actual wind speed.

[0081] It should be noted that, in the embodiments provided in this application, each driver is connected to the central control processor; and one or more wind speed sensors can be arranged axially on the main shaft 10; the wind speed sensors are electrically connected to the central control processor. The central control processor can control the start and stop of each driver according to the wind speed measured by the wind speed sensors.

[0082] It should be noted that the strategy of the central control processor for controlling the height and radius of the blade 20 through the wind speed belongs to the prior art that those skilled in the art can adjust according to actual working conditions, materials of the wind turbine and other factors. In an implementation provided in this embodiment, taking the number of wind speed sensors as one as an example, its control strategy can be to divide the wind speed from low to high into multiple range intervals such as the first interval, the second interval, the third interval, the fourth interval, etc.

[0083] When the wind speed is in the first interval, the central control processor controls the upper drive 33 and the lower drive 34 to start, adjusts the radius of the scissor mechanism 22 to a similar Figure 4 high solidity state, and controls the blade 20 to be located in a higher area on the main shaft 10.

[0084] When the wind speed is in the second interval, the central control processor controls the upper drive 33 and the lower drive 34 to start, adjusts the radius of the scissor mechanism 22 to a similar Figure 4 high solidity state, and controls the blade 20 to be located in a lower area on the main shaft 10.

[0085] When the wind speed is in the third interval, the central control processor controls the upper drive 33 and the lower drive 34 to start, adjusts the radius of the scissor mechanism 22 to a similar Figure 2 low solidity state, and controls the blade 20 to be located in a higher area on the main shaft 10.

[0086] When the wind speed is in the fourth interval, the central control processor controls the upper drive 33 and the lower drive 34 to start, adjusts the radius of the scissor mechanism 22 to a similar Figure 3 low solidity state, and controls the blade 20 to be located in a lower area on the main shaft 10.

[0087] When the wind speed is greater than the maximum wind speed value of the fourth interval, the central control processor controls the upper drive 33 and the lower drive 34 to start, and adjusts the scissor mechanism 22 to a similar Figure 1 retracted state.

[0088] The retractable vertical axis wind turbine provided by this embodiment can not only adjust the radius of the blade 20 according to the wind speed, but also adjust the height of the blade 20, enabling the wind turbine to adapt to more different working conditions. In particular, in the face of extreme weather where the wind force can change significantly within a short period of time, such as in typhoons and other climates, the retractable vertical axis wind turbine provided by this embodiment can timely adjust the solidity according to the wind speed situation, and when the wind force is too large, such as greater than the maximum wind speed value of the above-mentioned fourth interval, control the scissor mechanism 22 to retract and enter the shutdown state, effectively reducing the risk of damage to the wind turbine in extreme weather.

[0089] In a further improved embodiment, please refer to Figures 1 to 7 , an upper slider 211 and a lower slider 212 that can slide along the first direction are provided on the blade plate 21; the upper end and the lower end on the other side of the scissor mechanism 22 are respectively hinged to the upper slider 211 and the lower slider 212; an elevating drive 213 is provided on the upper slider 211 and / or the lower slider 212; the elevating drive 213 is used to drive the blade plate 21 to slide along the first direction relative to the elevating drive 213.

[0090] In an application, the lifting drive 213 can be disposed on one of the upper slider 211 and the lower slider 212, or can be disposed on both the upper slider 211 and the lower slider 212. The upper slider 211 and the lower slider 212 can both be I-shaped sliders.

[0091] The lifting drive 213 can be a worm motor, and a worm is disposed at an output end thereof; a chute for the upper slider 211 and the lower slider 212 to slide is disposed on the vane plate 21; a rack is disposed in the chute; the rack meshes with the worm at the output end of the worm motor; when the lifting drive 213 is started, the worm rotates, thereby driving the vane plate 21 to rise or fall relative to the lifting drive 213.

[0092] In this embodiment, the vane plate 21 that can rise or fall relative to the lifting drive 213 can further increase the applicability of the wind turbine. Specifically, as Figure 2 shown, when the blade 20 is in a higher region on the main shaft 10, the vane plate 21 can further rise. As Figure 3 shown, when the blade 20 is in a lower region on the main shaft 10, the vane plate 21 can further fall.

[0093] In one embodiment, the transmission assembly 30 further includes: a positioning mechanism 35; a detachable hinge 221 is disposed at a lower end on one side of the scissor mechanism 22; the detachable hinge 221 is detachably hinged to the lower sleeve 32; the positioning mechanism 35 has an unlocked state and a locked state; in the locked state, the upper sleeve 31 and the vane plate 21 are lifted and lowered synchronously; in the locked state, when the upper drive 33 drives the upper sleeve 31 to move closer to the lower sleeve 32, the detachable hinge 221 is separated from the lower sleeve 32.

[0094] Please refer to Figure 5 , when the detachable hinge 221 is separated from the lower sleeve 32, since only three hinge ends of the scissor mechanism 22 are in a hinged state, at this time, the lifting and lowering of the upper sleeve 31 will not be able to drive the scissor mechanism 22 to stably expand and contract. In this embodiment, the positioning mechanism 35 can, in the locked state, when the upper drive 33 is started, the scissor mechanism 22 will maintain its original radius and follow the upper sleeve 31 to rise and fall, so that the blade 20 can rise and fall synchronously, and further the vane plate 21 can fall to a position lower than the lower sleeve 32, as Figure 5 shown.

[0095] As an implementation manner, please refer to Figure 9, the positioning mechanism 35 may include, for example, telescopic motors 356 provided on the first fork rod 222 and the second fork rod 223. When the telescopic motors 356 are activated, the output ends of the telescopic motors 356 on the first fork rod 222 extend and abut against the second fork rod 223, and the output ends of the telescopic motors 356 on the second fork rod 223 extend and abut against the first fork rod 222, so that the shape of the scissors mechanism 22 is fixed and cannot be telescoped. Correspondingly, the telescopic motors 356 are configured not to interfere with the telescoping of the scissors mechanism 22 within the deformation range required for operation when the output ends are in the contracted state.

[0096] In another embodiment, the positioning mechanism 35 may also be the lifting driver 213 mentioned in the above embodiment. Specifically, in this embodiment, lifting drivers 213 are provided on both the upper slider 211 and the lower slider 212; when the lifting drivers 213 are in a state of remaining shut down and being stuck with the vane 21, the upper slider 211 and the lower slider 212 cannot slide relative to each other, so that the shearing mechanism 22 cannot be telescoped; at this time, when the upper sleeve 31 is lifted or lowered, since the shearing mechanism 22 cannot be telescoped, the vane 21 can be driven to lift or lower synchronously.

[0097] It should be noted that in the embodiment where lifting drivers 213 are provided on both the upper slider 211 and the lower slider 212, when the shearing mechanism 22 needs to be telescopically extended or retracted normally, the lifting drivers 213 are configured to start following the upper driver 33 and the lower driver 34. For example, when the lower driver 34 is shut down and the upper driver 33 is started, the lifting driver 213 connected to the lower slider 212 remains shut down, and the lifting driver 213 connected to the upper slider 211 is started, so that the telescopic extension or retraction of the shearing mechanism 22 can be achieved.

[0098] In one embodiment, please refer to Figures 1 to 8 , the positioning mechanism 35 includes: a plug pin 351, a plug rod 352, a positioning sleeve 353, and a positioning driver 355; the positioning sleeve 353 is movably provided on the main shaft 10 along a first direction; the plug rod 352 is provided on the positioning sleeve 353; the plug pin 351 is provided on the vane 21; a plug pin slot 354 opening in a second direction is provided on the plug rod 352; the second direction is the radial direction of the main shaft 10; the positioning driver 355 is connected to the positioning sleeve 353 and is used to drive the positioning sleeve 353 to move along the first direction. In the locked state, the plug pin 351 is inserted into the interior of the plug pin slot 354, and the positioning driver 355 starts and stops synchronously with the upper driver 33; in the unlocked state, the plug pin 351 is separated from the plug pin slot 354.

[0099] In this embodiment, there are multiple insertion rods 352 and multiple pins 351, which correspond to the multiple blades 20 one by one. During the telescopic movement of the scissors mechanism 22 in the second direction, the blade plate 21 and the pin 351 will be driven to move in the second direction, and may be accompanied by movement in the first direction. The central control processor can control the upper sleeve 31 and the lower sleeve 32 to move to an appropriate height according to the position of the insertion rod 352, so that the pin 351 is docked with the insertion rod 352.

[0100] In one embodiment, in order to facilitate the pin 351 to be inserted into the pin slot 354, a flared structure is provided at the opening of the pin slot 354. Among them, the flared structure can be, for example, setting the opening of the pin slot 354 in a flared shape.

[0101] Specifically, taking the example that the lifting driver 213 is provided on the lower slider 212 and not on the upper slider 211; in this embodiment, when the upper driver 33 and / or the lower driver 34 are started to drive the scissors mechanism 22 to expand and contract, the lifting driver 213 can remain in the stopped state, and then the upper slider 211 slides along the blade plate 21 to realize the expansion and contraction of the scissors mechanism 22. During the startup process of the upper driver 33 and / or the lower driver 34, the vertical lifting stroke of the blade plate 21 and the pin 351 can be calculated. The central control processor can control the positioning driver 355 to start, driving the insertion rod 352 and the positioning sleeve 353 to move in the vertical direction by the same lifting stroke, so as to drive the accurate docking of the pin 351 and the insertion rod 352. Among them, when the lifting driver 213 is stopped and other drivers are started, the calculation method of calculating the moving stroke of the pin 351 and the insertion rod 352 in the first direction and the second direction belongs to the prior art, so it will not be elaborated in this embodiment.

[0102] To more clearly illustrate the method of controlling the docking of the pin 351 and the insertion rod 352, following the above method of setting the lifting driver 213 on the lower slider 212, this embodiment provides a control process as follows: when controlling the expansion and contraction of the scissors mechanism 22, the lifting driver 213 and the lower driver 34 remain stopped, and only the upper driver 33 is started; in this way, since both hinge ends of the scissors mechanism 22 at the lower part are fixed, when the upper driver 33 is started, the pin 351 will only move horizontally. Therefore, in the state where the pin slot 354 is horizontally aligned with the pin 351, the upper driver 33 can drive the pin 351 to move horizontally and be inserted into the pin slot 354 or separated from the pin slot 354.

[0103] After the pin 351 is inserted into the pin slot 354, the upper driver 33 and the positioning driver 355 are started synchronously, and can drive the blade plate 21 and the scissors mechanism 22 to lift synchronously through the positioning mechanism 35, so that the detachable hinge 221 on the scissors mechanism 22 is separated from the lower sleeve 32.

[0104] As an implementation manner, the detachable hinge 221 is a J-shaped hinge with a bayonet; a latch post 321 is arranged on the lower sleeve 32; the bayonet of the detachable hinge 221 is detachably clamped with the latch post 321.

[0105] In one embodiment, the insertion rod 352 is an electric telescopic rod, that is, the insertion rod 352 can adopt a rod that can be electrically telescoped in the prior art, so that the insertion rod 352 can adjust its own length to adjust the solidity of the wind turbine in the locked state.

[0106] In one embodiment, it further includes: a support column 40; the main shaft 10 is rotatably arranged on the support column 40. Specifically, the lower end of the main shaft 10 can be connected with an extension shaft 11; the extension shaft 11 is rotatably connected to the support column 40 through a bearing. Wherein, the bearing can be arranged on a flange 12 on the support column 40.

[0107] In one embodiment, an end cover 51 can be arranged on the main shaft 10; a lightning rod 50 is arranged on the end cover 51.

[0108] The above are the preferred embodiments of the present application and are not used to limit the present invention. Although the present application has been described in detail with reference to the examples, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing examples, or perform equivalent replacements on some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A telescopic vertical axis wind turbine, characterized in that, Comprising: a main shaft (10), a transmission assembly (30), and a plurality of blades (20); The axial direction of the main shaft (10) is the first direction; The transmission assembly (30) includes: an upper sleeve (31), a lower sleeve (32), an upper driver (33), and a lower driver (34); The upper sleeve (31) is movably disposed on the main shaft (10) along the first direction; The lower sleeve (32) is movably disposed on the main shaft (10) along the first direction; The upper driver (33) is connected to the upper sleeve (31) and is used to drive the upper sleeve (31) to move along the first direction; The lower driver (34) is connected to the lower sleeve (32) and is used to drive the lower sleeve (32) to move along the first direction; A plurality of blades (20) are circumferentially distributed around the main shaft (10); The blade (20) includes: a blade plate (21) and a scissor mechanism (22); The upper and lower ends on one side of the scissor mechanism (22) are respectively hinged to the upper sleeve (31) and the lower sleeve (32); The upper and lower ends on the other side of the scissor mechanism (22) are both hinged to the blade plate (21).

2. The retractable vertical axis wind turbine according to claim 1, wherein An upper slider (211) and a lower slider (212) capable of sliding along the first direction are provided on the blade plate (21); The upper and lower ends on the other side of the scissor mechanism (22) are respectively hinged to the upper slider (211) and the lower slider (212); A lifting driver (213) is provided on the upper slider (211) and / or the lower slider (212); The lifting driver (213) is used to drive the blade plate (21) to slide along the first direction relative to the lifting driver (213).

3. The telescopic vertical axis wind turbine according to claim 1 or 2, characterized in that, The transmission assembly (30) further includes: a positioning mechanism (35); A detachable hinge (221) is provided at the lower end on one side of the scissor mechanism (22); The detachable hinge (221) is detachably hinged to the lower sleeve (32); The positioning mechanism (35) has an unlocking state and a locking state; In the locking state, the upper sleeve (31) and the blade plate (21) are lifted and lowered synchronously; In the locking state, when the upper driver (33) drives the upper sleeve (31) to move closer to the lower sleeve (32), the detachable hinge (221) is separated from the lower sleeve (32).

4. The retractable vertical axis wind turbine according to claim 3, wherein, The positioning mechanism (35) includes: a bolt (351), a plug rod (352), a positioning sleeve (353), and a positioning driver (355); The positioning sleeve (353) is movably disposed on the main shaft (10) along the first direction; The plug rod (352) is disposed in the positioning sleeve (353); The bolt (351) is disposed on the blade plate (21); A bolt slot (354) opening towards the second direction is provided on the plug rod (352); The second direction is the radial direction of the main shaft (10); The positioning driver (355) is connected to the positioning sleeve (353) and is used to drive the positioning sleeve (353) to move along the first direction; In the locked state, the bolt (351) is inserted into the bolt slot (354), and the positioning driver (355) starts and stops synchronously with the upper driver (33). In the unlocked state, the bolt (351) is separated from the bolt slot (354).

5. The retractable vertical axis wind turbine according to claim 4, wherein, The opening of the bolt slot (354) is provided with a flared structure.

6. The telescopic vertical axis wind turbine according to claim 4, wherein, The bolt rod (352) is an electric telescopic rod.

7. The retractable vertical axis wind turbine according to claim 3, wherein, The detachable hinge (221) is a J-shaped hinge with a bayonet. A clamping post (321) is arranged on the lower sleeve (32). The bayonet of the detachable hinge (221) is detachably clamped with the clamping post (321).

8. The telescopic vertical-axis wind turbine according to claim 1, wherein A lightning rod (50) is arranged at the top of the main shaft (10).

9. The retractable vertical axis wind turbine according to claim 1, wherein The main shaft (10) is a threaded shaft. The upper driver (33) is arranged on the upper sleeve (31), and the output end of the upper driver (33) is meshed and connected with the main shaft (10). The lower driver (34) is arranged on the lower sleeve (32), and the output end of the lower driver (34) is meshed and connected with the main shaft (10).

10. The retractable vertical axis wind turbine according to claim 1, characterized in that, It further includes: A support column (40); The main shaft (10) is rotatably arranged on the support column (40).

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