JPH074345A - Variable pitch mechanism of wind power prime mover - Google Patents
Variable pitch mechanism of wind power prime moverInfo
- Publication number
- JPH074345A JPH074345A JP5172465A JP17246593A JPH074345A JP H074345 A JPH074345 A JP H074345A JP 5172465 A JP5172465 A JP 5172465A JP 17246593 A JP17246593 A JP 17246593A JP H074345 A JPH074345 A JP H074345A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- holder
- variable pitch
- connecting rod
- pitch mechanism
- 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.)
- Withdrawn
Links
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
Description
【０００１】[0001]
【産業上の利用分野】本発明は風力原動機の可変ピッチ
機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable pitch mechanism for a wind turbine.
【０００２】[0002]
【従来の技術】風力原動機では、自然風の風速が常時大
幅に変動し台風時には６０〜８０m/sに達することもあ
るので、回転速度があがりすぎないように回転速度の制
御装置を設けなければならず、大形の発電用プロペラー
形風車では、油圧作動の可変ピッチ機構による自動速度
制御装置が多く利用されている。その原理を図３模式図
について説明すると、風速が過大になると自動又は手動
でコントロールモーター１２が回わり、リンク機構１３
を介して配圧弁１４が作動し、このとき油圧ユニット１
５からの圧油がサーボシリンダー１６の右室に入り、ピ
ストン１７を左側へ押圧して操作棒１８を移動させる。
操作棒１８にはクロスヘッド１９が取付けられており、
リンク機構２０及びアーム２１を介して、ブレード軸２
を回転させ、ブレード１のピッチ角を立てて揚力及び抗
力を減少させる。なおリンク機構１３にはフィードバッ
ク用の復帰レバー２２が結合され、制御の安定化が図ら
れている。2. Description of the Related Art In a wind power engine, the wind speed of natural wind constantly fluctuates greatly and sometimes reaches 60 to 80 m / s during a typhoon. Therefore, a rotation speed control device must be provided to prevent the rotation speed from rising too high. Of course, in large-sized power generation propeller type wind turbines, an automatic speed control device using a hydraulically operated variable pitch mechanism is often used. The principle will be described with reference to the schematic diagram of FIG. 3. When the wind speed becomes excessive, the control motor 12 automatically or manually rotates to cause the link mechanism 13 to rotate.
The pressure distribution valve 14 is operated via the
Pressure oil from 5 enters the right chamber of the servo cylinder 16 and pushes the piston 17 to the left to move the operating rod 18.
A crosshead 19 is attached to the operating rod 18,
The blade shaft 2 via the link mechanism 20 and the arm 21.
Is rotated to raise the pitch angle of the blade 1 to reduce the lift and drag. A return lever 22 for feedback is connected to the link mechanism 13 to stabilize the control.
【０００３】しかしながらこのような機構は、構造が複
雑でコスト高を招き、かつ油圧系統の保守が面倒であ
り、また急激な風速又は風向の変動に伴う衝撃力や負荷
遮断による軸系への衝撃によって、風力原動機が破損す
る場合がある。However, such a mechanism has a complicated structure and causes high cost, maintenance of the hydraulic system is troublesome, and an impact force due to a sudden change in wind speed or wind direction or an impact on the shaft system due to load shedding is caused. May damage the wind turbine.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、このような
事情に鑑みて提案されたもので、構造簡単で低コストで
あり、かつ風速に応じた理想的なブレード角度が自動的
に保持され、変動荷重によるブレード及び発電機等への
衝撃力が有効に吸収される風力原動機の可変ピッチ機構
を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been proposed in view of the above circumstances and has a simple structure and low cost, and an ideal blade angle according to the wind speed is automatically maintained. It is an object of the present invention to provide a variable pitch mechanism for a wind turbine that effectively absorbs the impact force on the blade, the generator, etc. due to the fluctuating load.
【０００５】[0005]
【課題を解決するための手段】そのために本発明は、ブ
レード軸と一体に形成されたホルダーと、主軸フランジ
に取付けられピンを介して上記ホルダーを支えるフレー
ムと、上記ブレード軸の端部に連結された連接棒と、主
軸フランジに取付けられ自動調心ころがり軸受を介して
上記連接棒を支える支柱とを具えたことと、更にホルダ
ーの上面をピストンロッドで押圧するばね油圧緩衝器を
具えたこととを、それぞれ特徴とする。To this end, the present invention relates to a holder integrally formed with a blade shaft, a frame mounted on a main shaft flange for supporting the holder via a pin, and connected to an end portion of the blade shaft. Equipped with a connecting rod and a supporting column which is attached to the main shaft flange and supports the connecting rod through a self-aligning rolling bearing, and a spring hydraulic shock absorber that presses the upper surface of the holder with a piston rod. And are respectively characterized.
【０００６】[0006]
【作用】本発明風力原動機の可変ピッチ機構において
は、風速が上がりブレードへの推力が増大すると、ホル
ダーはピンを支点として回動し、このとき連接棒も自動
調心ころがり軸受を支点として回動する。ブレード軸と
連接棒は互いに拘束し合っているため、上記回動のため
の逃げとして、ブレード軸は軸心周りに回動してブレー
ドのピッチ角を変更させる。またばね油圧緩衝器はホル
ダー部で軸系の衝撃力を吸収緩和する。In the variable pitch mechanism of the wind turbine of the present invention, when the wind speed increases and the thrust on the blade increases, the holder rotates about the pin as the fulcrum, and at this time, the connecting rod also rotates about the self-aligning roller bearing as the fulcrum. To do. Since the blade shaft and the connecting rod are constrained to each other, as a relief for the above rotation, the blade shaft rotates about the axis to change the pitch angle of the blade. Further, the spring hydraulic shock absorber absorbs and relaxes the impact force of the shaft system at the holder portion.
【０００７】[0007]
【実施例】本発明風力原動機の可変ピッチ機構の一実施
例を、図１斜視図及び図２正面図について説明すると、
３枚のブレード１の各ブレード軸２と一体に形成された
ホルダー３は、ピン４を介して主軸フランジ５と一体の
フレーム６で支えられている。ピン４とフレーム６との
嵌合は十分なすきま嵌めとされる。ホルダー３の先端か
ら突き出たブレード軸端部２ａは連接体７と図２に示す
ようなねじ結合により連結され、そのロッドエンドは自
動調心ころがり軸受８を介して、主軸フランジ５と一体
の支柱９によって支えられている。なおホルダー３の上
面は別に保持されたばね油圧緩衝器１０のピストンロッ
ド１１で押圧されており、このばね油圧緩衝器１０は、
原位置復帰用のばねと運動エネルギの大部分を吸収する
流体抵抗発生部分から成り、高い緩衝効果と消散効果を
持つ。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a variable pitch mechanism for a wind turbine of the present invention will be described with reference to the perspective view of FIG. 1 and the front view of FIG.
A holder 3 formed integrally with each blade shaft 2 of the three blades 1 is supported by a frame 6 integrated with a main shaft flange 5 via a pin 4. The pin 4 and the frame 6 are fitted to each other with a sufficient clearance. The blade shaft end 2a protruding from the tip of the holder 3 is connected to the connecting body 7 by a screw connection as shown in FIG. 2, and the rod end of the blade shaft is integrated with the main shaft flange 5 via a self-aligning rolling bearing 8. It is supported by 9. The upper surface of the holder 3 is pressed by a piston rod 11 of a spring hydraulic shock absorber 10 that is separately held.
It consists of a spring for returning to the original position and a fluid resistance generating part that absorbs most of the kinetic energy, and has a high cushioning effect and dissipation effect.
【０００８】このような装置において、風速が上がりブ
レード１への推力が増大すると、ホルダー３はピン４を
支点として矢印の方向に回動し、このとき連接棒７も自
動調心ころがり軸受８を支点として回動する。ブレード
軸２と連接棒７は互いに拘束し合っているため、上記回
動のための逃げとして、ブレード軸２は矢印の方向に回
動してブレード１のピッチ角を変更させる。またばね油
圧緩衝器１０はホルダー３部で軸系の衝撃力を吸収緩和
する。In such a device, when the wind speed rises and the thrust on the blade 1 increases, the holder 3 rotates in the direction of the arrow with the pin 4 as a fulcrum, and at this time, the connecting rod 7 also moves the self-aligning roller bearing 8. It rotates as a fulcrum. Since the blade shaft 2 and the connecting rod 7 are constrained to each other, the blade shaft 2 rotates in the direction of the arrow to change the pitch angle of the blade 1 as an escape for the above rotation. Further, the spring hydraulic shock absorber 10 absorbs and relaxes the impact force of the shaft system by the holder 3.
【０００９】かくしてこの装置によれば、ピン４で支持
されたホルダー３にブレード軸２を一体的に取付けると
ともに、ブレード軸端部２ａを自動調心ころがり軸受８
支持の連接棒７に連結したことにより、簡単で低コスト
の可変ピッチ機構がえられるとともに、風速に応じた理
想的なブレード１角度が自動的に保持され、変動荷重に
よるブレード１及び発電機等への衝撃力が有効に吸収さ
れる。従ってクリーンエネルギとしての大容量風力発電
機のコスト低減において、顕著な効果を奏する。Thus, according to this device, the blade shaft 2 is integrally attached to the holder 3 supported by the pin 4, and the blade shaft end 2a is self-aligning rolling bearing 8.
By connecting to the supporting connecting rod 7, a simple and low-cost variable pitch mechanism can be obtained, and the ideal blade 1 angle according to the wind speed is automatically maintained, and the blade 1 and the generator due to fluctuating load etc. The impact force on is effectively absorbed. Therefore, it has a remarkable effect in reducing the cost of the large-capacity wind power generator as clean energy.
【００１０】[0010]
【発明の効果】要するに本発明によれば、ブレード軸と
一体に形成されたホルダーと、主軸フランジに取付けら
れピンを介して上記ホルダーを支えるフレームと、上記
ブレード軸の端部に連結された連接棒と、主軸フランジ
に取付けられ自動調心ころがり軸受を介して上記連接棒
を支える支柱とを具えたことと、更にホルダーの上面を
ピストンロッドで押圧するばね油圧緩衝器を具えたこと
とにより、構造簡単で低コストであり、かつ風速に応じ
た理想的なブレード角度が自動的に保持され、変動荷重
によるブレード及び発電機等への衝撃力が有効に吸収さ
れる風力原動機の可変ピッチ機構を得るから、本発明は
産業上極めて有益なものである。In summary, according to the present invention, a holder integrally formed with a blade shaft, a frame attached to a main shaft flange for supporting the holder via a pin, and a connecting member connected to an end portion of the blade shaft. By having a rod and a pillar that is attached to the main shaft flange and supports the connecting rod through a self-aligning rolling bearing, and by further providing a spring hydraulic shock absorber that presses the upper surface of the holder with a piston rod, A variable pitch mechanism for wind turbines that has a simple structure and low cost, automatically maintains the ideal blade angle according to the wind speed, and effectively absorbs the impact force on the blade and generator due to fluctuating load Therefore, the present invention is extremely useful in industry.
【図１】本発明風力原動機の可変ピッチ機構の一実施例
の斜視図である。FIG. 1 is a perspective view of an embodiment of a variable pitch mechanism of a wind turbine of the present invention.
【図２】同上の正面図である。FIG. 2 is a front view of the above.
【図３】従来の可変ピッチ機構の模式図である。FIG. 3 is a schematic view of a conventional variable pitch mechanism.
１ ブレード ２ ブレード軸 ２ａ ブレード軸端部 ３ ホルダー ４ ピン ５ 主軸フランジ ６ フレーム ７ 連接棒 ８ 自動調心ころがり軸受 ９ 支柱 10 ばね油圧緩衝器 11 ピストンロッド 1 Blade 2 Blade Shaft 2a Blade Shaft End 3 Holder 4 Pin 5 Spindle Flange 6 Frame 7 Connecting Rod 8 Self-Aligning Rolling Bearing 9 Strut 10 Spring Hydraulic Buffer 11 Piston Rod
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小川 健男 兵庫県高砂市荒井町新浜二丁目１番１号 三菱重工業株式会社高砂製作所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeo Ogawa 1-1-1, Niihama, Arai-cho, Takasago, Hyogo Prefecture Mitsubishi Heavy Industries, Ltd. Takasago Plant
Claims (2)
と、主軸フランジに取付けられピンを介して上記ホルダ
ーを支えるフレームと、上記ブレード軸の端部に連結さ
れた連接棒と、主軸フランジに取付けられ自動調心ころ
がり軸受を介して上記連接棒を支える支柱とを具えたこ
とを特徴とする風力原動機の可変ピッチ機構。1. A holder integrally formed with a blade shaft, a frame attached to the main shaft flange to support the holder via a pin, a connecting rod connected to an end of the blade shaft, and a main shaft flange. A variable pitch mechanism for a wind power engine, comprising: a support for supporting the connecting rod through a self-aligning rolling bearing.
するばね油圧緩衝器を具えたことを特徴とする第１項記
載の風力原動機の可変ピッチ機構。2. The variable pitch mechanism for a wind power engine according to claim 1, further comprising a spring hydraulic shock absorber that presses an upper surface of the holder with a piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5172465A JPH074345A (en) | 1993-06-18 | 1993-06-18 | Variable pitch mechanism of wind power prime mover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5172465A JPH074345A (en) | 1993-06-18 | 1993-06-18 | Variable pitch mechanism of wind power prime mover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH074345A true JPH074345A (en) | 1995-01-10 |
Family
ID=15942501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5172465A Withdrawn JPH074345A (en) | 1993-06-18 | 1993-06-18 | Variable pitch mechanism of wind power prime mover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH074345A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010138768A (en) * | 2008-12-10 | 2010-06-24 | Univ Of Ryukyus | Blade pitch double control mechanism of windmill |
| US10598159B2 (en) | 2016-05-06 | 2020-03-24 | General Electric Company | Wind turbine bearings |
| KR102384200B1 (en) * | 2021-12-23 | 2022-04-08 | (주)삼원밀레니어 | Pitch control assembly for wind turbine blade |
-
1993
- 1993-06-18 JP JP5172465A patent/JPH074345A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010138768A (en) * | 2008-12-10 | 2010-06-24 | Univ Of Ryukyus | Blade pitch double control mechanism of windmill |
| JP4649570B2 (en) * | 2008-12-10 | 2011-03-09 | 国立大学法人 琉球大学 | Windmill blade pitch double control mechanism |
| US10598159B2 (en) | 2016-05-06 | 2020-03-24 | General Electric Company | Wind turbine bearings |
| KR102384200B1 (en) * | 2021-12-23 | 2022-04-08 | (주)삼원밀레니어 | Pitch control assembly for wind turbine blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000905 |