CN212642953U - Windmill - Google Patents

Abstract

The utility model provides a windmill, including rotating the seat, the vertical pivot of having regard as power output shaft that arranges on the rotation seat, the fixed rotating turret that is provided with of circumference of pivot, it has the aerofoil to articulate on the rotating turret, the aerofoil revolves the rotation of aerofoil around its articulated shaft axle core when the aerofoil revolves the axle core, the revolution direction of aerofoil is the same or opposite with the rotation direction of aerofoil, the attitude adjustment that the wind direction was followed according to wind direction is made to the drive rotation seat of steering mechanism, the attitude adjustment rotates and satisfies following adaptation relation, when the articulated shaft axle core was at the plane perpendicular to wind direction with the pivot axle core place, the face perpendicular to wind direction of one side aerofoil, 90 make its faces be on a parallel with the wind direction of aerofoil rotation when this aerofoil revolved 180. The windward side of the windmill is provided with a plate surface of a vane plate which is vertical to the wind direction, so that the whole windmill can be pushed to rotate by utilizing the wind power to the maximum extent, and the windmill can still rotate under the breeze.

Description

Windmill

Technical Field

The utility model relates to a technical field that wind energy utilized, concretely relates to windmill.

Background

With the rapid development of economy, the consumption speed of energy is also increasing, the shortage of energy becomes a problem which is becoming more and more serious day by day, wind energy is more and more paid attention to by people as a renewable energy source, at present, wind energy is mainly converted into mechanical energy through a windmill and then converted into electric energy through a generator to be utilized, and the windmill can also be directly used as a power mechanism of other devices.

The existing wind driven generator generally can not be driven by a windmill to drive a generator rotor to rotate to generate electricity, in a natural environment, wind often changes irregularly, not only the wind direction changes from time to time, but also the wind magnitude does not change, because the windmill on the wind driven generator is huge, blades on the windmill are narrow, when the wind power is small or breeze, because the windmill can not be driven by enough wind power, the generator rotor is difficult to drive to rotate, the wind power generation is limited, and the requirements of continuous power generation and continuous power supply can not be met. Meanwhile, because wind power is insufficient and cannot be operated, the generator can only be idle, so that resource waste is caused, equipment is rusted and damaged due to long-term stagnation, the windmill needs to keep the same rotating direction, and otherwise voltage instability is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a windmill which can keep the same direction of rotation.

In order to realize the purpose, the utility model discloses a technical scheme be: a windmill comprises a rotating seat, a rotating shaft serving as a power output shaft is vertically arranged on the rotating seat, a rotating frame is fixedly arranged on the circumference of the rotating shaft, a vane plate is hinged on the rotating frame, the direction of the hinge shaft core of the wind blade plate is parallel to the direction of the shaft core of the rotating shaft, at least two wind blade plates are uniformly arranged at intervals in the circumferential direction of the rotating shaft, the wind blade plates rotate around the hinge shaft cores when revolving around the shaft cores of the rotating shaft, the revolving direction of the wind blade plates is the same as or opposite to the rotating direction of the wind blade plates, the steering mechanism drives the rotating seat to perform posture adjustment rotation following the wind direction according to the wind direction, the posture adjustment rotation meets the following adaptation relation, when the plane of the hinge shaft cores and the rotating shaft cores is vertical to the wind direction, the plate surface of one wind blade plate is vertical to the wind direction, when the wind vane plate revolves for 180 degrees along with the rotating shaft, the wind vane plate rotates for 90 degrees to enable the plate surface to be parallel to the wind direction, and a rotating support structure is arranged between the rotating shaft and the rack and used for axially supporting the rotating shaft and the connected wind vane plate.

Among the above-mentioned scheme, the face perpendicular to wind direction that has a aerofoil on the windward side of windmill can utilize wind-force to promote whole windmill rotation by the at utmost like this, and the windmill still can rotate under the breeze, has further improved the utilization ratio of wind energy, simultaneously the utility model provides a rotation seat can rotate along with the wind direction, like this the utility model provides a windmill alright with keep stable under arbitrary wind direction and rotate, the windmill just can keep turning to unchangeable rotation along with the wind force.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 and 3 are schematic structural views of the present invention;

fig. 4, 5 and 10 are schematic structural views of a windmill base;

FIG. 6 is a cross-sectional view taken along plane A-A of FIG. 5;

fig. 7 and 11 are schematic disassembly views of the windmill base;

fig. 8 and 9 are working principle diagrams of the present invention.

Detailed Description

A device for adjusting the follow-up angle of a wind blade plate of a windmill comprises a rotating seat 10, a rotating shaft 30 serving as a power output shaft is vertically arranged on the rotating seat 10, a rotating frame 40 is fixedly arranged on the circumferential direction of the rotating shaft 30, the wind blade plate 50 is hinged on the rotating frame 40, the axial direction of a hinge shaft 51 of the wind blade plate 50 is parallel to the axial direction of the rotating shaft 30, at least two wind blade plates 50 are uniformly arranged at intervals in the circumferential direction of the rotating shaft 30, when the wind blade plate 50 revolves around the axial core of the rotating shaft 30, the wind blade plate 50 rotates around the axial core 51 of the hinge shaft beta, the revolution alpha direction of the wind blade plate 50 is the same as or opposite to the rotation beta direction of the wind blade plate 50, a steering mechanism drives the rotating seat 10 to do attitude adjustment rotation following the wind direction according to the wind direction, the attitude adjustment rotation meets the following adaptation relation, when the plane where the axial core 51 of the hinge shaft and the axial core of the rotating shaft 30, when the wind vane plate 50 revolves 180 degrees along with the rotating shaft 30, the wind vane plate 50 rotates 90 degrees to enable the plate surface to be parallel to the wind direction, and a rotating support structure 34 is arranged between the rotating shaft 30 and the rack 90 and used for axially supporting the rotating shaft 30 and the connected wind vane plate 50;

in the above-mentioned scheme, when the articulated shaft 51 axle center and the plane perpendicular to wind direction at the pivot 30 axle center place, the face perpendicular to wind direction windward of one side aerofoil 50 in the wind direction, the face of opposite side aerofoil 50 is on a parallel with the wind direction downwind, and there is huge gap in the windward area of wind direction both sides aerofoil 50 like this to guarantee that the turning to of pivot 30 is unchangeable and the rotation torque is the biggest, make wind-force utilization ratio reach the maximize, the utility model discloses an essence is that its windward area is different when the different positions of rotation beta through aerofoil 50 makes aerofoil 50, so just can make the resultant moment of pivot 30 in one side in the wind direction be greater than the resultant moment of opposite side, thereby realize that aerofoil 50 revolutes the axle core revolution alpha of pivot 30. The revolution α of the vane plate 50 is accompanied by the rotation β, and when the vane plate 50 revolves 180 °, the vane plate 50 rotates 90 °, that is, the revolution α angle of the vane plate 50 is: the rotation angle β of the vane plate 50 is 2: 1, because the wind vane plate 50 is a plate-shaped structure with symmetrical two sides, the included angle between the plate surface and the wind direction is the same when the rotation beta is 180 degrees and the rotation beta is 360 degrees, thus ensuring that the windward areas of the wind vane plate 50 at the same position are the same when the wind vane plate revolves to each position, and the windmill can continuously and stably work. The essence of the posture of the rotary base 10 following the wind direction according to the wind direction is: if the position of the rotating seat 10 facing a certain point of the wind direction is 0, when the wind direction changes, the direction adjusting mechanism drives the rotating seat 10 to rotate so that the position of 0 faces the wind direction. The utility model provides a rotation bearing structure 34 is axial support bearing or magnetic suspension mechanism, the utility model discloses the windward side of well windmill is great, can utilize wind-force to promote whole windmill rotation by the at utmost, and the windmill still can rotate under the breeze, has further improved the utilization ratio of wind energy, simultaneously the utility model provides a rotation seat 10 can rotate along with the wind direction, like this the utility model provides a windmill alright keep stabilizing the rotation under arbitrary wind direction, the windmill just can keep turning to unchangeable rotation along with wind power.

The rotating base 10 is fixedly provided with a base gear 13 concentric with the rotating shaft 30, the base gear 13 is meshed with transition gears 15 corresponding to the number of the vane plates 50, the transition gears 15 are concentrically provided with transition bevel gears 16, hinge shafts 51 of the vane plates 50 are concentrically and fixedly provided with conical driven gears 52, two ends of a transmission shaft 60 with the shaft core direction on the horizontal plane are concentrically provided with bevel gears 61, and the two bevel gears 61 are respectively meshed with the transition bevel gears 16 and the conical driven gears 52. The linkage mechanisms such as the transmission shaft 60 and the like in the scheme can be arranged above the vane plate 50 or below the vane plate 50 along with the rotating seat 10, the linkage of the revolution alpha and the rotation beta of the vane plate 50 is completed through a mechanical structure, the linkage is simple and convenient, errors are not prone to occurring, and complicated wiring is omitted relative to electric control.

The revolution speed ratio of the revolution alpha of the vane plate 50 to the rotation speed of the vane plate 50 relative to the ground is 2: 1. this ensures that the angle between the vane plate 50 and the wind direction is the same when the vane plate is rotated to the same position.

The revolution α direction of the louver 50 is the same as the rotation β direction of the louver 50 with respect to the ground. The same revolution α direction of the louver 50 and the same rotation β direction of the louver 50 mean: when the windmill is viewed from the top, the revolution alpha and the rotation beta both rotate anticlockwise or clockwise, wherein the direction of the rotation beta is the direction of the rotation beta relative to the ground, and because the rotation beta of the vane plate 50 relative to the ground while revolving is equal to the revolution alpha minus the rotation angle of the vane plate itself relative to the hinge shaft 51, the rotation direction of the vane plate itself relative to the hinge shaft 51 is opposite to the direction of the revolution alpha.

When the plane where the axis of the hinge shaft 51 and the axis of the rotating shaft 30 are located is parallel to the wind direction, the included angle between the surface of the wind vane plate 50 and the wind direction is 45 degrees. When the vane plate 50 is at this position, the angle between the front vane plate 50 and the rear vane plate 50 in the wind direction is 90 °, and the vane plate 50 rotates 90 ° when rotating from the front position to the rear position. By utilizing the wind direction tracking system, the included angle between the wind vane plate at the forefront facing the wind direction and the wind direction is always kept at 45 degrees through the driving device.

And a brake device for limiting the rotation of the rotating seat 10 is arranged on a transmission path between the wind blade plate 50 and the direction adjusting mechanism. When the wind direction is not changed, the rotating seat 10 needs to be limited by the brake device to prevent the rotating seat from deflecting under the action of external force.

The rotating shaft 30 penetrates through the rotating seat 10, the base 70 and the bottom plate 80 and forms clearance fit with the rotating seat 10, the base 70 and the bottom plate 80, a lower radial bearing 71, located in the vertical direction, of the shaft core direction is arranged in the base 70, used for radially supporting the rotating shaft 30, an axial bearing 12, located in the vertical direction, of the shaft core direction and used for supporting the rotating seat 10 is arranged on the same core at the upper end of the base 70, an upper radial bearing 11, located in the vertical direction, of the shaft core direction is arranged in the rotating seat 10, used for radially supporting the rotating seat 10, the shaft body of the rotating shaft 30 is arranged in the upper radial bearing 11 and the lower radial bearing 11 and the shaft body of the rotating shaft 30 and forms small clearance movable fit with an inner bearing ring, and the upper radial bearing 11 is. In the above solution, the purpose of the clearance fit is to prevent the rotating shaft 30 from generating contact friction with the rotating base 10, the base 70 and the bottom plate 80 when rotating, so as to prevent equipment abrasion and energy loss, and at the same time, the base 70 can be adjusted in a certain position within the clearance range to solve the eccentric offset of the rotating shaft 30. The movable fit of the small gap is to ensure that the upper and lower radial bearings 11 and 71 and the shaft body of the rotating shaft 30 avoid transmitting axial force, and can ensure that the stress of the radial bearings is within the bearing capacity range when the shaft core is eccentric when the rotating shaft 30 rotates; in addition, when the shaft core of the transition rotating shaft 30 is slightly deviated, the upper and lower radial bearings 11 and 71 provide radial forces with certain spacing and opposite directions to act on the transition connecting shaft 32 in a bending moment manner to implement supporting homing; the base 70 and the lower radial bearing 71 therein are used for radially supporting the rotating shaft 30, so that the rotating shaft 30 can freely rotate on the base 70, and due to the large volume of the windmill, the corresponding rotating seat 10 is also large and heavy, and the axial bearing 12 supports the rotating seat 10 and ensures that the rotating seat can rotate relative to the base 70.

The rotating base 10 is fixedly provided with a conical base gear 13 concentric with the rotating shaft 30, the hinge shaft 51 of the vane plate 50 is fixedly provided with a conical driven gear 52 concentric with the rotating shaft, two ends of a transmission shaft 60 with the shaft axis direction on the horizontal plane are provided with conical gears 61 concentric with the rotating shaft, the two conical gears 61 are respectively meshed with the conical base gear 13 and the conical driven gear 52, and the transmission ratio between the conical base gear 13 and the conical driven gear 52 is 2: 1, the directions of the bottoms of the bevel base gears 13 and the bevel driven gears 52 are the same, and the meshing sides of the bevel gears 61 and the bevel base gears 13 and the bevel driven gears 52 are located on the side of the corresponding gears away from the rotating shaft 30. The linkage mechanisms such as the transmission shaft 60 and the like in the scheme can be arranged above the fan blade plate 50 or below the fan blade plate 50 along with the rotating seat 10, the linkage of the revolution alpha and the rotation beta of the fan blade plate 50 is completed through a mechanical structure, the linkage is simple and convenient, errors are not prone to occurring, complex wiring is omitted relative to electric control, and shaft transmission is not prone to chain dropping and damage compared with chain transmission, and maintenance and management are facilitated. The direction of the conical bottoms of the conical base gear 13 and the conical driven gear 52 is the same as the direction of the revolution alpha and the rotation beta, the utility model discloses well conical base gear 13 and conical driven gear 52's conical bottom up, conical gear's meshing surface is located the difficult deposition in conical bottom below like this, is favorable to prolonging its life.

The direction adjusting mechanism comprises a direction adjusting chain wheel or gear 14 fixedly arranged on the rotating seat 10 in a concentric mode, and the driving mechanism receives a position signal of the wind vane 20 to drive the adjusting chain wheel or gear 14 to rotate along with the wind vane 20. Namely, the power transmission mode of the direction adjusting mechanism is chain transmission or gear transmission, and can also be a worm gear structure, the worm gear structure has the functions of driving and braking positioning at the same time, so that the synchronous rotation of the rotating seat 10 and the wind vane 20 is realized, the driving mechanism forms a certain rotation limit on the rotating seat 10 to prevent the rotation of the rotating shaft 30 from driving the rotating seat 10, the rotating seat 10 can be arranged at the lower part of the rotating shaft 30, and the maintenance and the circuit arrangement are convenient. The scheme not only ensures the realization of the power transmission of the direction adjusting mechanism, but also avoids mutual interference with the rotation of the rotating frame 40 by dislocation.

And a bottom plate 80 on the outer side of the base 70 is provided with a centering bolt 81 for adjusting the position of the shaft core of the base 70. Therefore, the concentricity of the upper and lower layers of the base 70 during installation can be adjusted, the position of the shaft core of the rotating shaft 30 can be adjusted, the shaft cores of the upper and lower ends of the rotating shaft 30 are consistent and cannot generate larger offset, and the damage of parts caused by core offset is avoided.

The pivot 30 includes the last connecting axle 31 that links to each other with the rotating turret 40 and passes the transition switching axle 32 of rotating seat 10, base 70, bottom plate 80, go up and connect through the ring flange between connecting axle 31 and the transition switching axle 32 and be connected, the outer wall of transition switching axle 32 is big-end-up's step axle form, its step face and the up end interval arrangement of last radial bearing 11, lower connecting axle 33 and transition switching axle 32 are hollow tubular axle and both connect the back axial, circumference spacing connection, lower connecting axle 33 lower extreme is provided with the ring flange that is used for connecting power receiving mechanism. Because the windmill is large in size, the rotating shaft 30 with the multi-section structure is convenient to transport, assemble and process, the transition connecting shaft 32 is arranged and is connected with the upper radial bearing 11 and the lower radial bearing 71, the processing precision of the transition connecting shaft 32 can be ensured, meanwhile, the installation is convenient, otherwise, the processing of a long rotating shaft 30 to the required precision is extremely difficult, in view of the overlong length, the assembly process of the transition connecting shaft 32 and the upper radial bearing 11 and the lower radial bearing 71 is also difficult, the processing is extremely convenient for the transition connecting shaft 32 with the length of about one meter, the installation is not difficult, the transition connecting shaft 32 is in a stepped shaft shape, when the rotation supporting structure 34 is not installed in the initial installation, the weight of the transition connecting shaft 32 can be temporarily borne by the radial bearings, and the weight of a single transition connecting shaft cannot cause bearing damage. And the whole rotating shaft 30 is tubular, so that the dead weight is reduced as much as possible while the space for installing the rotating frame 40 is ensured on the peripheral wall of the rotating shaft 30, and the lower end of the lower connecting shaft 33 is used as a power output end which can be connected with a generator to generate electricity by wind power.

The windmill bodies are arranged on a multi-layer platform 91 on the frame 90 along the axial direction of the rotating shaft 30, the bottom plate 80 is arranged on the upper surface of the platform 91, and the upper end of the upper connecting shaft 31 is provided with a flange connected with the transition connecting shaft 32 of the windmill body above. Therefore, the windward area of the windmill can be increased through the multilayer arrangement of the windmill in the arrangement area with the same area, the generating capacity is increased, meanwhile, the power of the multilayer windmill is integrated on one shaft by connecting the upper rotating shaft 30 and the lower rotating shaft 30 through the flange plate, the assembly and disassembly are convenient, and the number of layers of the windmill is only required to be arranged according to the bearing capacity.

The rotating frame 40 comprises cantilevers 41 which are arranged corresponding to the upper end and the lower end of the fan blade plate, the inner ends of the cantilevers 41 are of a half-like structure, the outer ends of the cantilevers 41 at the upper end and the lower end are provided with a bearing seat and a radial bearing which are used for supporting a hinge shaft 51, and an axial supporting structure is arranged at the hinge shaft 51 at the outer end of the cantilever 41 and used for offsetting the gravity of the fan blade plate 50. The half structure is the half structure when two vane plates exist, the axial angle occupied by the inner end structure of the single cantilever 41 is 360 degrees divided by the number of the vane plates, only the single cantilever 41 needs to be manufactured during manufacturing and transportation, the half-like structure is convenient to disassemble and assemble, and the axial supporting structure is an axial supporting bearing or a magnetic suspension structure.

An inclined pull rod 42 is arranged between the lower cantilever 41 and the rotating shaft 30, the cantilever 41, the rotating shaft 30 and the inclined pull rod 42 enclose a triangular structure located in a vertical plane, and the lower portion of the wind blade plate 50 is trapezoidal to avoid the position of the inclined pull rod 42. Because the windmill is large in size and the lower cantilever 41 is stressed greatly, the diagonal draw bar 42 is arranged to improve the stress capacity of the diagonal draw bar 42, when the space below the lower cantilever 41 is limited and the diagonal draw bar 42 is not convenient to arrange, the diagonal draw bar 42 can be arranged above the lower cantilever 41, and the lower part of the wind vane plate 50 is designed in an avoidance mode corresponding to the diagonal draw bar 42.

A rotating shaft brake for limiting the revolution alpha of the windmill is arranged between the rotating shaft 30 and the frame 90. The function of the rotating shaft brake is to stop the windmill through the brake device 36 when maintenance is needed, and meanwhile, the potential safety hazard caused by the rotation of the windmill in the process of disassembly and assembly is avoided.

And a fan blade brake for limiting the autorotation beta of the fan blade plate 50 is arranged between the articulated shaft 51 and the rotating frame 40. The function of the fan blade brake is that when the fan blade plate 50 is dismounted, the fan blade plate does not form a linkage relation with the rotating shaft 30, and the fan blade plate can rotate freely at the moment, so that the fan blade brake is arranged to prevent the self-rotation beta of the fan blade plate from interfering the dismounting operation, and meanwhile, the potential safety hazard caused by the rotation of the fan blade plate 50 in the dismounting process is avoided.

Claims (15)

1. A windmill, characterized in that: the wind power generation device comprises a rotating seat (10), a rotating shaft (30) serving as a power output shaft is vertically arranged on the rotating seat (10), a rotating frame (40) is fixedly arranged in the circumferential direction of the rotating shaft (30), at least two wind blade plates (50) are hinged to the rotating frame (40), the shaft core direction of a hinge shaft (51) of each wind blade plate (50) is parallel to the shaft core direction of the rotating shaft (30), the wind blade plates (50) are uniformly arranged in the circumferential direction of the rotating shaft (30) at intervals, when the wind blade plates (50) revolve around the shaft cores of the rotating shaft (30), the wind blade plates (50) rotate (beta) around the shaft cores of the hinge shafts (51), the revolution (alpha) direction of the wind blade plates (50) is the same as or opposite to the rotation (beta) direction of the wind blade plates (50), a steering mechanism drives the rotating seat (10) to perform posture adjustment rotation according to the wind direction, the posture adjustment rotation meets the following adaptation relation, and when the plane where the shaft cores of the hinge shafts (51) and the rotating shaft cores, the plate surface of the wind blade plate (50) at one side is vertical to the wind direction, when the wind blade plate (50) revolves along the rotating shaft (30) for 180 degrees, the wind blade plate (50) rotates for 90 degrees to enable the plate surface to be parallel to the wind direction, and a rotating support structure (34) is arranged between the rotating shaft (30) and the rack (90) and used for axially supporting the rotating shaft (30) and the connected wind blade plate (50).

2. The windmill of claim 1, wherein: the revolution (alpha) of the vane plate (50) and the rotation (beta) of the vane plate (50) relative to the ground have the rotation speed ratio of 2: 1.

3. the windmill of claim 1, wherein: the revolution (alpha) direction of the vane plate (50) is the same as the rotation (beta) direction of the vane plate (50) relative to the ground.

4. The windmill of claim 1, wherein: when the plane where the axis core of the articulated shaft (51) and the axis core of the rotating shaft (30) are located is parallel to the wind direction, the included angle between the surface of the wind vane plate (50) and the wind direction is 45 degrees.

5. The windmill of claim 1, wherein: and a brake device for limiting the rotation of the rotating seat (10) is arranged on a transmission path between the wind blade plate (50) and the direction adjusting mechanism.

6. The windmill of claim 1, wherein: the novel bearing seat is characterized by further comprising a cylindrical base (70) arranged on the bottom plate (80), the rotating shaft (30) penetrates through the rotating seat (10), the base (70) and the bottom plate (80) and forms clearance fit with the rotating seat (10), a lower radial bearing (71) which is used for radially supporting the rotating shaft (30) and is located in the vertical direction in the shaft core direction is arranged in the base (70), an axial bearing (12) which is used for supporting the rotating seat (10) and is located in the vertical direction in the shaft core direction is arranged on the upper end of the base (70) in the same core mode, an upper radial bearing (11) which is used for radially supporting the rotating seat (10) and is located in the vertical direction in the shaft core direction is arranged in the rotating seat (10), the shaft body of the rotating shaft (30) is arranged in the upper radial bearing (11) and the lower radial bearing (71) and forms small clearance movable fit with the inner bearing ring.

7. The windmill of claim 1, 2, 3, 4, 5, or 6, wherein: the fixed toper base gear (13) with pivot (30) concentric that is provided with on rotation seat (10), coaxial fixed toper driven gear (52) that is provided with the core on articulated shaft (51) of aerofoil (50), the both ends that transmission shaft (60) that the axle core direction is located the horizontal plane have arranged with the core bevel gear (61), two bevel gear (61) mesh with toper base gear (13) and toper driven gear (52) respectively, the drive ratio between toper base gear (13) and toper driven gear (52) is 2: the directions of the conical bottoms of the conical base gear (13) and the conical driven gear (52) are the same, and the meshing sides of the two bevel gears (61) and the conical base gear (13) and the conical driven gear (52) are positioned on the side of the corresponding gear far away from the rotating shaft (30).

8. The windmill of claim 1, 2, 3, 4, 5, or 6, wherein: the direction adjusting mechanism comprises a direction adjusting chain wheel or gear (14) fixedly arranged on the rotating seat (10) in a concentric mode, and the driving mechanism receives a position signal of the wind vane (20) to drive the adjusting chain wheel or gear (14) to rotate along with the wind vane (20).

9. The windmill of claim 6, wherein: and a bottom plate (80) at the outer side of the base (70) is provided with a core adjusting bolt (81) for adjusting the position of the shaft core of the base (70).

10. The windmill of claim 6, wherein: pivot (30) include last connecting axle (31) that link to each other with rotating turret (40) and pass and rotate seat (10), base (70), transition switching axle (32) of bottom plate (80), go up and be connected through the ring flange between connecting axle (31) and the transition switching axle (32), the outer wall of transition switching axle (32) is big-end-up's step axle form, its step face arranges with the up end interval of last journal bearing (11), lower connecting axle (33) and transition switching axle (32) are hollow tubular axle and both grafting connection back axial, circumference spacing connection, lower connecting axle (33) lower extreme is provided with the ring flange that is used for connecting power receiving mechanism.

11. The windmill of claim 10, wherein: the windmill main body is arranged on a multilayer platform (91) on a frame (90) along the axial direction of a rotating shaft (30), a bottom plate (80) is arranged on the upper surface of the platform (91), and the upper end of an upper connecting shaft (31) is provided with a flange plate connected with a transition connecting shaft (32) of the windmill main body above.

12. The windmill of claim 1, wherein: the rotating frame (40) comprises cantilevers (41) which are arranged corresponding to the upper end and the lower end of the fan blade plate, the inner ends of the cantilevers (41) are of a half-like structure, the outer ends of the cantilevers (41) on the upper side and the lower side are provided with a bearing seat and a radial bearing which are used for supporting a hinge shaft (51), and an axial supporting structure is arranged at the position of the hinge shaft (51) on the outer end of the cantilever (41) and used for offsetting the gravity of the fan blade plate (50).

13. The windmill of claim 12, wherein: an inclined pull rod (42) is arranged between the lower cantilever (41) and the rotating shaft (30), the cantilever (41), the rotating shaft (30) and the inclined pull rod (42) surround to form a triangular structure located in a vertical plane, and the lower portion of the wind vane plate (50) is trapezoidal to avoid the position of the inclined pull rod (42).

14. The windmill of claim 1, wherein: a rotating shaft brake for limiting the revolution (alpha) of the windmill is arranged between the rotating shaft (30) and the frame (90).

15. The windmill of claim 1, wherein: and a fan blade brake for limiting the autorotation (beta) of the fan blade plate (50) is arranged between the articulated shaft (51) and the rotating frame (40).

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