CN203335325U - Wind generating set and variable-pitch driving system thereof - Google Patents
Wind generating set and variable-pitch driving system thereof Download PDFInfo
- Publication number
- CN203335325U CN203335325U CN2013202918199U CN201320291819U CN203335325U CN 203335325 U CN203335325 U CN 203335325U CN 2013202918199 U CN2013202918199 U CN 2013202918199U CN 201320291819 U CN201320291819 U CN 201320291819U CN 203335325 U CN203335325 U CN 203335325U
- Authority
- CN
- China
- Prior art keywords
- drive system
- motor
- generating set
- change oar
- oar drive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 44
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000010248 power generation Methods 0.000 description 2
- 241001672694 Citrus reticulata Species 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Wind Motors (AREA)
Abstract
The utility model discloses a variable-pitch driving system for a wind generating set. The variable-pitch driving system includes a motor and a decelerator connected with the output shaft of the motor, the decelerator includes a planetary gear transmission system connected with the output shaft of the motor and being capable of multistage transmission, and the output end of the planetary gear transmission system is fixedly connected with the blades of the wind generating set. The variable-pitch driving system provided adopts an enclosed gear drive manner, when the planetary gear transmission system runs, the engaged teeth are increased and the force bearing of the engaged teeth is improved, thereby improving the reliability of the variable-pitch driving system and prolonging the service life of the variable-pitch driving system. In addition, the variable-pitch driving system adopts the planetary gear transmission system, a variable-pitch bearing is saved and the structure of the variable-pitch driving system is more compact.
Description
Technical field
The utility model relates to wind power generation field, and specifically, the utility model relates to a kind of change oar drive system, and in addition, the utility model also relates to a kind of wind power generating set with this change oar drive system.
Background technique
In the process of utilizing wind power generating set to be generated electricity, due to wind direction and wind speed real-time change, for blade rotary speed and output power to wind power generating set, controlled, be provided with on each blade and become the oar drive system.Become the oar drive system and control the rotating speed of wheel hub by the angle with respect to wind direction of controlling blade, thereby realize the control to output power.In addition, when wind speed far surpasses rated wind speed, can utilize the aerodynamic braking mode that wind power generating set is shut down safely.Generally speaking, change oar drive system commonly used comprises hydraulic variable oar system and electric variable propeller system at present.
Fig. 1 shows comparatively general change oar drive system at present, for each blade 5 of wind power generating set, all has independent change oar drive system, and change oar drive system is arranged on wheel hub.Become the oar drive system and substantially comprise motor 1, the retarder 3 and the pitch variable bearings 4 that are connected with the output shaft of motor 1.The outer ring of pitch variable bearings 4 is meshed with the output shaft of retarder 3, and is fixedly connected with the blade 5 of wind power generating set, and inner ring is fixed on the wheel hub 2 of wind power generating set.From the moment of torsion of motor 1 is less, and the output that rotating speed is higher is converted to after the deceleration of retarder 3 increases torsion effect that moment of torsion is relatively large, rotating speed is relatively low.The one-level gear pair transmission of output shaft and pitch variable bearings 4 by retarder 3 (or by driving belt pair) drives the outer ring of pitch variable bearings 4 the further root rotation of area moving vane 5, like this, blade 5 can rotate on the one hand under the wind-force effect, and drive wheel hub 2 simultaneously and rotate together, on the other hand, motor 1 can rotate with the root of moving vane 5, so that blade 5 is regulated with respect to the angle of wind direction, that is, being become oar controls.
For above-mentioned change oar drive system, what adopt is open type gear driving, need certain lubricating condition, and the output shaft of retarder 3 is the cantilever support type structure, cause output shaft may have certain distortion, may make the flank of tooth discontinuity of the gear be meshed, reduce the working life that becomes the oar drive system.In addition, owing to becoming scope that the oar drive system regulated the angle of blade 5 only between 0 degree-90 degree, so output shaft and the pitch variable bearings 4 of retarder 3 only have the part tooth to be meshed when being become oar and control, and other teeth are all the time in job state not.
Therefore, providing a kind of change oar drive system that can improve working life and compact structure is those skilled in the art's technical issues that need to address.
The model utility content
The purpose of this utility model is to provide a kind of change oar drive system, and be improved the working life of described change oar drive system, and structure is comparatively compact, and reliability is high.In addition, another purpose of the present utility model is to provide a kind of wind power generating set that comprises described change oar drive system.
To achieve these goals, the utility model provides a kind of oar of the change for wind power generating set drive system, described change oar drive system comprises motor and the retarder be connected with the output shaft of described motor, described retarder comprises the planetary transmission system that is connected and has Multi-stage transmission with the output shaft of described motor, and the output terminal of described planetary transmission system is fixedly connected with the blade of wind power generating set.
Preferably, described planetary transmission system comprises the input shaft be connected with the output shaft of described motor, multistage intermeshing sun gear and planet wheel, fixedly the planet carrier of planet wheel and with the ring gear of planet wheel engagement, wherein, first order sun gear is connected with the output shaft of described motor, power from the intermeshing sun gear of upper level and planet wheel is passed to the next stage sun gear by planet carrier, be fixed to the wheel hub of described wind power generating set for the fixing planet carrier of afterbody planet wheel, using power is passed to the ring gear as described output terminal from the afterbody planet wheel.
Preferably, described change oar drive system also comprises the hollow shaft be fixedly connected with the wheel hub of described wind-driven generator, described hollow shaft is arranged on the end place of close described retarder of the output shaft of the end place of close described motor of input shaft of described retarder or described motor, and described ring gear is supported on described hollow shaft by the side body of described retarder.
Preferably, between described side body and described hollow shaft, be provided with two row tapered roller bearings, to support described ring gear.
Preferably, the planet carrier of the fixedly afterbody planet wheel of described planetary transmission system is fixed to the wheel hub of described wind power generating set by described hollow shaft.
Preferably, described ring gear is fixedly connected with the blade of described wind power generating set by link.
Preferably, described link is shaped as the hub shape, and circumferentially distributing equably along described ring gear.
Preferably, described motor is AC servo motor.
In addition, the utility model also provides a kind of wind power generating set, comprises blade, and the root of described blade is fixedly connected with above-mentioned change oar drive system.
In the time need to being regulated with respect to the angle of wind direction the blade of wind power generating set, at first motor drives the retarder running, under the decelerating effect of retarder, to be converted to from the higher rotating speed of motor input the lower rotating speed of the output of retarder, and then the blade rotary of drive wind power generating set, realize the adjusting to blade angle.Change oar drive system provided by the utility model adopts closed-type gear transmission, replaced open type gear driving of the prior art, and when planetary transmission system turns round, the number of teeth be meshed increases, and the strength of gear be meshed is improved, the reliability and the working life that become the oar drive system have been improved.In addition, in change oar drive system provided by the utility model, adopt planetary transmission system, saved pitch variable bearings, the structure that contributes to make to become the oar drive system is compacter.
Wind power generating set provided by the utility model has the technique effect identical with above-mentioned change oar drive system, does not repeat them here.
The accompanying drawing explanation
Fig. 1 is change oar driving system structure schematic diagram of the prior art;
Fig. 2 is the structural representation illustrated according to the change oar drive system of specific embodiment of the utility model;
Fig. 3 is the transmission sketch of the change oar drive system shown in Fig. 2.
Embodiment
Core of the present utility model has been to provide a kind of wind power generating set that becomes the oar drive system and comprise described change oar drive system, and the reliability of described change oar drive system is higher and the life-span is relatively long.
In order to make those skilled in the art can better understand the utility model, below by conjunction with the accompanying drawings and embodiments the utility model being described in detail.
With reference to Fig. 2 and Fig. 3, Fig. 2 is the structural representation illustrated according to the change oar drive system of specific embodiment of the utility model, and Fig. 3 is the transmission sketch of the change oar drive system shown in Fig. 2.
According to an embodiment of the present utility model, for the change oar drive system of wind-driven generator, comprise motor 10 and retarder.Motor 10, for becoming the power source of oar drive system, after the driving force of motor 10 is slowed down by the transmission system in retarder, drives the blade 17 of wind power generating set to rotate.Retarder comprises planetary transmission system, this planetary transmission system is connected with the output shaft 30 of motor 10, receive the rotation input of motor 10, and the output terminal of planetary transmission system (or output member) is fixedly connected with blade 17, particularly, with the root of blade 17, be fixedly connected with, thereby the transmission of power that will produce from motor 10 can rotate with respect to wind direction blade 17 to blade 17 in the several angle scope.That is to say, blade 17 circumferentially rotates on the one hand under the drive of wind-force, and then the wheel hub 11 that drives wind power generating set rotates simultaneously, carry out power generation operation, on the other hand, blade 17 turns to certain angle under the driving of motor 10, thus the angle between adjusting vane 17 and wind direction, rotating speed and the output power of the blade 17 of control wind power generating set.
Retarder can be converted to the rotation that rotating speed is less, moment of torsion is larger by the rotating speed rotation higher, that moment of torsion is less from motor 10 outputs, thereby drive vane 17 turns to suitable angle reliably.
In general, the rotating speed of motor 17 output is relatively high, and when blade 17 is become oar and controls, needed moment of torsion wants much bigger and rotating speed is much smaller, so the planetary transmission system in retarder can be Multi-stage transmission, in order to there is larger velocity ratio.For example, in a specific embodiment, can be 2 to 6 grades of planetary transmission systems, thereby can realize the deceleration effect of expection, control rotating speed and the output power of the blade 17 of wind power generating set.In the exemplary embodiment be described below, the planetary transmission system of retarder is the level Four planetary transmission system.Certainly, the planetary transmission system of retarder can be also other forms, as long as can have enough velocity ratios, rotating speed is reduced to certain level, and is enough to the rotation that drive vane 17 box hauls or wind speed expected and gets final product.
Specifically, in the situation that retarder adopt planetary transmission system, described retarder comprise the input shaft 31 is connected with the output shaft 30 of motor 10, intermeshing sun gear and planet wheel, for the planet carrier that supports planet wheel and the ring gear 18 meshed with planet wheel.Be used for the fixedly planet carrier of afterbody planet wheel and be fixedly connected with the wheel hub 11 of wind power generating set, that is to say, the output terminal of retarder is ring gear 18, and the blade 17 of wind power generating set is just fixing with ring gear 18 so.In addition, between the output shaft 30 of the input shaft 31 of retarder and motor 10, preferably by spline, be fixed together.In addition, can also adopt other Connecting format, for example, slide block.
The blade 17 of wind power generating set can be fixed to ring gear 18 by link 15, between link 15 and blade 17, can be fixedly connected with by clamping bolt 32.The shape of link 15 can be the hub shape particularly, that is, link 15 can be along the circumferentially distribution equably of ring gear 18, so that ring gear 18 is stressed even as best one can.It should be noted that, the utility model is not limited to this, between blade 17 and ring gear 18, can also adopt other suitable forms to be connected, as long as guarantee ring gear 18, can be with moving vane 17 to rotate, for example, can strengthen the size of retarder, blade 17 directly is fixedly connected with ring gear 18, but at this moment, the size of retarder and weight may be excessive.
The change oar drive system that the utility model provides also can comprise the hollow shaft 12 be fixedly connected with the wheel hub 11 of wind power generating set, retarder also can comprise the first side body 14 and second side body 33 of the shell that forms retarder together with ring gear 18, the first side body 14 can also be fixedly connected with the blade of wind-driven generator with the second side body 33, like this, above-mentioned two side bodies and ring gear 18 can together with as the output terminal of retarder.Hollow shaft 12 can be arranged on the input shaft 31 be connected with output shaft 30 motor 10 retarder, is positioned at particularly an end place of the close motor 10 of input shaft 31.In addition, hollow shaft 12 can also be arranged on the end place of close retarder of the output shaft 30 of motor 10, as shown in Figure 2.The end of the input shaft 31 of retarder can extend in the output shaft 30 of motor 10, and preferably passes through spline joint.Like this, as shown in Figure 2, the ring gear 18 of retarder can be supported on the periphery of hollow shaft 12 by the first side body 14.
Because hollow shaft 12 rotates together with wheel hub 11, ring gear 18 rotates together with the first side body 14, so have certain relative movement between hollow shaft 12 and the first side body 14, like this, can be provided with further two row tapered roller bearings 13 between hollow shaft 12 and the first side body 14, to utilize hollow shaft 12 and tapered roller bearing 13 support ring gear 18 and are fixed on the blade 17 on ring gear 18, and reduce the wearing and tearing between the parts that are in contact with one another.For the support strength that increases hollow shaft 12 and the reliability of retarder, with support blade 17 more stably, no matter which axle hollow shaft 12 is arranged on, should make as best one can this axle installation hollow shaft 12 part diameter more greatly, and increase the Area of bearing of hollow shaft 12 and the first side body 14 as far as possible.
In the level Four planetary transmission system, retarder can comprise four sun gears, four planet wheels and four planet carriers.Specifically, sun gear 22,23,24,25 meshes with planet wheel 21,20,19,16 respectively, and planet wheel 21,20,19,16 is fixedly mounted on respectively on planet carrier 29,28,27,26.Planet carrier 29,28 and 27 is respectively used to the planet wheel of upper level 21,20 is fixedly connected with 25 with the sun gear 23,24 of next stage with 19.First order sun gear 22 is fixedly connected with the input shaft 30 of motor 10 by the input shaft 31 with retarder. Other sun gears 23,24,25 can be arranged on input shaft 31 by bearing.That is to say, intermeshing sun gear 22 and planet wheel 21 are first order transmission, and sun gear 23 and planet wheel 20 are second level transmission, and sun gear 24 and planet wheel 19 are third level transmission, and sun gear 25 and planet wheel 16 are the fourth stage (that is, afterbody) transmission.Like this, just fixing with wheel hub 11 for the planet carrier 26 of installing and support planet wheel 16, for example, can planet carrier 26 be fixed to wheel hub 11 by hollow shaft 12, specifically, can pass through spline joint between hollow shaft 12 and planet carrier 26, like this, hollow shaft 12 just can be fixedly connected with planet carrier 26 with wheel hub 11.
In addition, above line star- wheel 21,20,19,16 all can arrange a plurality of, and better to carry out power transmission, for example, the quantity of each planet wheel can be three.
Specifically, the power that motor 10 transmits the at first input shaft 31 drive first order sun gears 22 of process retarder rotates, and then drives with the planet wheel 21 of its engagement and rotates, and while planet wheel 21 also meshes with ring gear 18, that is, planet wheel 21 is revolved round the sun around sun gear 22 in rotation.Like this, power has obtained first order deceleration through intermeshing sun gear 22 and planet wheel 21.Planet wheel 21 drives planet carrier 29 rotations when rotating.Under the driving of planet carrier 29, drive 23 rotations of second level sun gear, under the engagement of sun gear 23 and planet wheel 20, make power obtain second level deceleration.After this, power, successively through after planet carrier 28, the intermeshing sun gear 24 of the third level and planet wheel 19 and planet carrier 27, being passed to fourth stage sun gear 25, also rotates with the planet wheel 16 of sun gear 25 engagements simultaneously.Because the planet carrier 26 for planet wheel 16 is installed is fixing with wheel hub 11, that is, planet wheel 16 only carries out rotation, so power is passed to the ring gear 18 meshed with planet wheel 16, the final blade fixing with ring gear 18 17 that drive rotates.From the foregoing, power just is passed to blade 18 after slowing down through level Four, and like this, retarder provided by the utility model can have enough large velocity ratio, the power transmitted by motor 10 is slowed down, can be improved reliably transmitted moment of torsion simultaneously.
When extraneous wind speed is greater than the rated wind speed of wind power generating set, motor 10 just starts to the retarder transferring power under control signal, now, large and torque is less at the rotating speed of the input shaft of motor 10.In retarder, through under the multi-stage speed-reducing effect of planetary transmission system, output terminal by transmission of power to retarder,, ring gear 18, and rotating speed less, torque are relatively large on ring gear 18, can turn to predetermined angle place with moving vane 17 reliably by link 15, thereby control the rotating speed of blade 17 and the output power of wind power generating set.When wind speed is excessive or situation that other need to shut down occurs, change oar drive system provided by the utility model can utilize aerodynamics to carry out dead halt under the driving of motor 10, makes blade 17 feathering to 90 degree positions.
Change oar drive system provided by the utility model, adopt closed-type gear transmission, open type gear driving of the prior art and pitch variable bearings structure have been replaced, and when being become oar control, in planetary transmission system, the intermeshing number of teeth increases, like this, the strength of gear be meshed is improved, and has improved the reliability and the working life that become the oar drive system.In addition, adopt planetary transmission system in change oar drive system provided by the utility model, saved pitch variable bearings, and adopted tapered roller bearing to support retarder and blade, the structure that contributes to make to become the oar drive system is compacter, weight relatively reduces.
In addition, according to another embodiment of the present utility model, also provide a kind of wind power generating set, described wind power generating set comprises blade 17, and the basis of this blade 17 is connected to above-mentioned change oar drive system.In wind power generating set, generally include a plurality of blades 17, independent change oar drive system all is equipped with for each blade,, blade 17 is corresponding one by one with change oar drive system.Other structures for wind power generating set, please refer to prior art, and wind power generating set provided by the utility model has the technique effect identical with above-mentioned change oar drive system, do not repeat them here.
The above have been described in detail wind power generating set provided by the utility model and change oar drive system thereof; although meaned and described embodiments more of the present utility model; but those skilled in the art should understand that; in the situation that do not break away from principle of the present utility model and the spirit that is limited its scope by claim and equivalent thereof; can modify and perfect to these embodiments, and these modifications and improve also should be in protection domain of the present utility model.
Claims (9)
1. a change oar drive system, for wind power generating set, described change oar drive system comprises motor and the retarder be connected with the output shaft of described motor, it is characterized in that, described retarder comprises the planetary transmission system that is connected and has Multi-stage transmission with the output shaft of described motor, and the output terminal of described planetary transmission system is fixedly connected with the blade of wind power generating set.
2. change oar drive system according to claim 1, it is characterized in that, described planetary transmission system comprises the input shaft be connected with the output shaft of described motor, multistage intermeshing sun gear and planet wheel, fixedly the planet carrier of planet wheel and with the ring gear of planet wheel engagement, wherein, first order sun gear is connected with the output shaft of described motor, power from the intermeshing sun gear of upper level and planet wheel is passed to the next stage sun gear by planet carrier, be fixed to the wheel hub of described wind power generating set for the fixing planet carrier of afterbody planet wheel, using power is passed to the ring gear as described output terminal from the afterbody planet wheel.
3. change oar drive system according to claim 2, it is characterized in that, described change oar drive system also comprises the hollow shaft be fixedly connected with the wheel hub of described wind-driven generator, described hollow shaft is arranged on the end place of close described retarder of the output shaft of the end place of close described motor of input shaft of described retarder or described motor, and described ring gear is supported on described hollow shaft by the side body of described retarder.
4. change oar drive system according to claim 3, is characterized in that, between described side body and described hollow shaft, is provided with two row tapered roller bearings, to support described ring gear.
5. change oar drive system according to claim 3, is characterized in that, the planet carrier of the fixedly afterbody planet wheel of described planetary transmission system is fixed to the wheel hub of described wind power generating set by described hollow shaft.
6. change oar drive system according to claim 2, is characterized in that, described ring gear is fixedly connected with the blade of described wind power generating set by link.
7. change oar drive system according to claim 6, is characterized in that, described link be shaped as the hub shape, and circumferentially distributing equably along described ring gear.
8. change oar drive system according to claim 1, is characterized in that, described motor is AC servo motor.
9. a wind power generating set, comprise blade, it is characterized in that, the root of described blade is fixedly connected with change oar drive system as described as claim 1 to 8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202918199U CN203335325U (en) | 2013-05-24 | 2013-05-24 | Wind generating set and variable-pitch driving system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202918199U CN203335325U (en) | 2013-05-24 | 2013-05-24 | Wind generating set and variable-pitch driving system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335325U true CN203335325U (en) | 2013-12-11 |
Family
ID=49704002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202918199U Expired - Lifetime CN203335325U (en) | 2013-05-24 | 2013-05-24 | Wind generating set and variable-pitch driving system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203335325U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266988A (en) * | 2013-05-24 | 2013-08-28 | 北京金风科创风电设备有限公司 | Wind generating set and variable pitch driving system thereof |
-
2013
- 2013-05-24 CN CN2013202918199U patent/CN203335325U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266988A (en) * | 2013-05-24 | 2013-08-28 | 北京金风科创风电设备有限公司 | Wind generating set and variable pitch driving system thereof |
| CN103266988B (en) * | 2013-05-24 | 2015-04-22 | 北京金风科创风电设备有限公司 | Wind generating set and variable pitch driving system thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103266988B (en) | Wind generating set and variable pitch driving system thereof | |
| CN201187405Y (en) | Wind generating set hub | |
| CN201474863U (en) | Variable-pitch variable-speed wind turbine | |
| CN101555871B (en) | Variable pitch and variable speed wind generating set | |
| EP1751426A2 (en) | Wind energy conversion system | |
| CN109340318B (en) | Three-power split planetary transmission structure of compact semi-direct-drive wind power gear box | |
| CN103742607A (en) | Integrated semi-direct drive wind generator transmission chain and gearbox for same | |
| CN107100796A (en) | A kind of model wind generating device with real time temperature monitoring function | |
| EP2594819B1 (en) | Split load path gearbox and method of operating a transmission | |
| CN203756446U (en) | Wind driven generator transmission structure | |
| CN202056007U (en) | High-power wind generator and blade thereof | |
| CN111561421A (en) | System and method for protecting a wind turbine from flutter during high wind speeds | |
| CN203335325U (en) | Wind generating set and variable-pitch driving system thereof | |
| CN103835892B (en) | A kind of wind-driven generator drive mechanism | |
| CN113374643A (en) | Shaftless wind power generation device | |
| CN211852684U (en) | Compact semi-direct-drive wind-driven electric gear box power split transmission structure | |
| CN203214234U (en) | Double-impeller wind turbine | |
| CN109386434B (en) | Compact semi-direct-drive wind power gear box multi-shaft power split transmission structure | |
| CN202746116U (en) | Impeller | |
| CN108361148B (en) | Real-time variable-pitch H-shaped vertical axis wind turbine | |
| CN203272628U (en) | Acceleration gearbox for high-power wind driven generator | |
| CN102080632B (en) | Wind power generating system | |
| CN211449524U (en) | Variable pitch gear pair of wind turbine generator and double-idler shunting device thereof | |
| US20130294916A1 (en) | Inverted Tooth Silent Drive Chain for Wind Turbine Powertrain Applications | |
| CN202732233U (en) | Variable-ratio wind generating set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |