JPS61123770A - Stress relieving device for rotary blade - Google Patents

Stress relieving device for rotary blade

Info

Publication number
JPS61123770A
JPS61123770A JP59242394A JP24239484A JPS61123770A JP S61123770 A JPS61123770 A JP S61123770A JP 59242394 A JP59242394 A JP 59242394A JP 24239484 A JP24239484 A JP 24239484A JP S61123770 A JPS61123770 A JP S61123770A
Authority
JP
Japan
Prior art keywords
connecting shaft
casing
blade
friction plate
rotary blade
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.)
Pending
Application number
JP59242394A
Other languages
Japanese (ja)
Inventor
Takeshi Tsushima
対馬　健
Tamotsu Shimada
保 島田
Yuji Matsunami
雄二 松浪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP59242394A priority Critical patent/JPS61123770A/en
Publication of JPS61123770A publication Critical patent/JPS61123770A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/12—Blades; Blade-carrying rotors
    • F03B3/121—Blades, their form or construction
    • 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
    • Y02E10/20—Hydro energy
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

PURPOSE:To relieve the bending stress in the root section of a rotary blade, by providing such an arrangement that the root section of the rotary blade is made to abut against a friction plate by means of spring to prevent the deflection of the rotary blade upon stopping, and the rotary blade is floated up to its balance position under centrifugal force together with a coupling shaft upon rotation. CONSTITUTION:A casing cover 5 is coupled to the front end of a cylindrical casing 4 which is secured to and planted on a rotor head 1 through a friction plate 2 provided with a pan shape plate 3. A connecting shaft 6 is slidably inserted into the casing 4 from the casing cover 5 side, and is supported by a spherical surfaces bearing mechanism 7a through 7e disposed in the upper part of the casing 4. Further, upon stopping, the end section or patch 11 of the connecting shaft 6 is pressed against the pan shape plate 3 of the friction plate 2 by means of a spring 10 to secure a blade 15 together with the connecting shaft 6 in order to prevent its deflection. Meanwhile upon rotation, the centrifugal force of the blade 15 is set to be larger than the urging force of a spring 10 to float up the connecting shaft 6 from the friction plate 2, thereby it is set at the center of the spherical bearing mechanism 7a through 7e.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、風車等の回転翼における応力軽減装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a stress reduction device for a rotor blade such as a wind turbine.

（従来の技術、問題点） 風車について従来例を説明すると、第２図に示すように
ロータヘッド（α）に翼（ｈ）の基部（Ｃ）が固設され
ているため、風荷重および翼自身の遠心力によって前記
基部（Ｃ）に太きい曲げ応力が生じる。(Prior art, problems) To explain a conventional example of a wind turbine, as shown in Fig. 2, the base (C) of the blade (h) is fixed to the rotor head (α), so the wind load and the blade A large bending stress is generated in the base (C) by its own centrifugal force.

前記曲げ応力を軽減する九めＫ、第２図に示すように翼
（ｂ）を傾斜θで取シ付ける方法もあるが、この場合、
第３図に示すように風荷重（イ）と遠心力（ロ）とがバ
ランスした場合のみ翼（Ａ）に作用する曲げ応力が零と
なるが（第２図の矢示は風向）、負荷を生じていない場
合は前記バランスがくずれて遠心力による曲げ応力が生
じる問題点がある。There is also a method of mounting the blade (b) at an inclination θ as shown in Fig. 2 to reduce the bending stress, but in this case,
As shown in Figure 3, the bending stress acting on the blade (A) becomes zero only when the wind load (A) and centrifugal force (B) are balanced (the arrow in Figure 2 indicates the wind direction), but the load If this is not the case, there is a problem in that the balance is lost and bending stress due to centrifugal force occurs.

（発明の目的、問題点の解決手段） 本発明は、前記のような問題点く対処するために開発さ
れたものであって、ロータヘット１に摩擦板を介して立
設されケーシング蓋に先端部を結合し九ケーシングと、
前記ケーシング内に挿入され球面軸受されて摺動する連
結軸と、前記連結軸に配設され該連結軸の端部を前記摩
擦板に当接させたばね、および前記連結軸の先端部に突
設された翼を具備した構成に特徴を有し、ロータヘッド
に立設されケーシング蓋に結合されているケーシングに
連結軸を軸受、ばねの介在によシ摺動可能に挿入し、該
連結軸に翼を突設することによシ、停止中はばねによっ
て翼の基部が摩擦板に当接されて固定され、回転中は遠
心力によって連結軸とともに翼が自動的に遠心力と風荷
重とのバランス位置まで浮き上って、翼の基部における
曲げ応力が大幅に低減されるようにして前記のような問
題点を解消した回転翼の応力軽減装置を供する点にある
。(Objective of the Invention, Means for Solving the Problems) The present invention was developed to solve the above-mentioned problems. Combine nine casings and,
a connecting shaft that is inserted into the casing and slides on a spherical bearing; a spring that is disposed on the connecting shaft and brings an end of the connecting shaft into contact with the friction plate; and a spring that projects from the tip of the connecting shaft. The connecting shaft is slidably inserted into the casing which is installed upright on the rotor head and connected to the casing lid through the intervention of a bearing and a spring, and the connecting shaft is By protruding the blades, the base of the blade is fixed by a spring in contact with the friction plate when the blade is stopped, and when rotating, the blade automatically handles the centrifugal force and the wind load together with the connecting shaft due to the centrifugal force. It is an object of the present invention to provide a stress reduction device for a rotor blade which eliminates the above-mentioned problems by floating up to a balanced position and greatly reducing bending stress at the base of the blade.

（発明の実施例） 第１図に本発明の一実施例を示しておシ、図中（１）は
ロータヘラ）’、（５）はケーシング蓋であって、ロー
タヘラ）’（１）Ｋ、皿形板（３）付の摩擦板（２）を
介して円筒状のケーシング（４）をボルト等の手段によ
って固着、立設するとともに、該ケーシング（４）の先
端部はケーシング蓋（５）にボルト等の手段によシ結合
されている。(Embodiment of the Invention) An embodiment of the present invention is shown in FIG. A cylindrical casing (4) is fixed and erected by means such as bolts via a friction plate (2) with a dish-shaped plate (3), and the tip of the casing (4) is attached to a casing lid (5). are connected to each other by means such as bolts.

また、連結軸（６）を穴付のケーシング蓋（５）側から
挿入してケーシング（４）内に摺動（図示上下方向）可
能に配置するとともに、ケーシング（４）の上部内に配
設されたナツト（７ｂ）付の支持枠（７つと、軸受（７
Ｃ）（７Ｃ）と、間隔片（７ｄ）、および連結軸（６）
側の球面軸受（７りからなる球面軸受機構によって、前
記連結軸（６）が球面軸受されて摺動される構成になっ
ている。In addition, the connecting shaft (6) is inserted from the side of the casing lid (5) with a hole and placed so as to be able to slide inside the casing (4) (in the vertical direction as shown), and is placed inside the upper part of the casing (4). Support frame (7) with attached nuts (7b) and bearing (7)
C) (7C), spacing piece (7d), and connecting shaft (6)
The connection shaft (6) is configured to be slid by being spherically supported by a spherical bearing mechanism consisting of a spherical bearing (7) on the side.

さらに、前記球面軸受（７ｅ）の図示下側に配置された
間隔片（８）とさらに下側の連結軸（６）に螺着された
ナツト（９）との間に皿型のはね（１０）を装着して、
該はね（１０）によって連結軸（６）を図示下側へ付勢
し該連結軸（６）の端部（図示下端部）に固着した当金
（１１）を前記摩擦板（２）の皿形板（３）上に当接さ
せる構成になっている。Furthermore, a dish-shaped spring ( 10) Attach the
The spring (10) urges the connecting shaft (6) downward in the figure, and the stopper (11) fixed to the end (lower end in the figure) of the connecting shaft (6) is pushed against the friction plate (2). It is configured to abut on a dish-shaped plate (3).

さらにまた、前記ケーシング蓋（５）上に立設し九ボル
ト（１３）に、連結軸（６）の先端部から側方に突設し
九アーム部（６つを嵌装して、該ボルト（１３）によっ
て連結軸（６）の先端部が図示上下方向に摺動案内され
るようになっているとともに、連結軸（６）の先端部に
はＸ　（１５）がボルト等の手段によって固着、突設さ
れた構成になっている。Furthermore, nine arm parts (six arms) are fitted to the nine bolts (13) erected on the casing lid (5) and protrude laterally from the tip of the connecting shaft (6). (13) so that the tip of the connecting shaft (6) is slidably guided in the vertical direction in the figure, and X (15) is fixed to the tip of the connecting shaft (6) by means such as bolts. , has a protruding configuration.

（発明の作用、効果） 本発明は、前記のような構成になっておシ、停止中は、
はね（１０）の押圧力によって連結軸（６）の端部即ち
当会（１１）が摩擦板（２）の皿形板（３）上に当接つ
まり押し付けられるため、連結軸（６）とともに翼α９
が固定されその振れが防止されるとともに、回転し始め
ると、翼（１５）の遠心力がばね（１０）の押圧力よシ
も大きくなシ、連結軸（６）が摩擦板（２）から浮き上
って、連結軸（６）に一体的に突設された翼（１５）は
。(Operations and Effects of the Invention) The present invention has the above-mentioned configuration, and when the invention is stopped,
Due to the pressing force of the spring (10), the end of the connecting shaft (6), that is, the contact portion (11) comes into contact with or is pressed onto the dish-shaped plate (3) of the friction plate (2), so that it is pressed together with the connecting shaft (6). Wing α9
is fixed and its vibration is prevented, and when it starts rotating, the centrifugal force of the blade (15) is greater than the pressing force of the spring (10), and the connecting shaft (6) is moved away from the friction plate (2). The wing (15) is floating and integrally protrudes from the connecting shaft (6).

自動的に遠心力と風荷重とがバランスする位置に、即ち
球面軸受機構の中心ｐ）を中心に動くようになシ、翼基
部における曲げ応力を大幅に低減でき、耐久性、信頼性
とともに翼性能が著しく向上されている。By automatically moving to a position where centrifugal force and wind load are balanced, that is, around the center p of the spherical bearing mechanism, bending stress at the blade base can be significantly reduced, improving durability and reliability as well as improving the blade. Performance has been significantly improved.

以上本発明を実施例について説明したが、勿論本発明は
このような実施例にだけ局限されるものではなく、本発
明の精神を逸脱しない範囲内で種々の設計の改変を施し
うるものである。Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例を示す回転翼の応力軽減装置
の縦断面図、第２図は従来例を示す翼装置の側面図、第
３図は風荷重と遠心力の関係図である。 ｌ：ロータヘッド、２：摩擦板、４：ケーシング、５：
ケーシング蓋、６：連結軸、 ７α〜７ｇ＝球面軸受、１０：ばね、１５：翼復代理人
　弁理士開本重文 外３名Fig. 1 is a longitudinal cross-sectional view of a rotary blade stress reduction device showing an embodiment of the present invention, Fig. 2 is a side view of a blade device showing a conventional example, and Fig. 3 is a diagram showing the relationship between wind load and centrifugal force. be. l: rotor head, 2: friction plate, 4: casing, 5:
Casing lid, 6: Connection shaft, 7α ~ 7g = spherical bearing, 10: Spring, 15: Tsubasa Futsu agent, 3 patent attorneys and non-Kaimoto important literary figures

Claims (1)

【特許請求の範囲】[Claims] ロータヘッドに摩擦板を介して立設されケーシング蓋に
先端部を結合したケーシングと、前記ケーシング内に挿
入され球面軸受されて摺動する連結軸と、前記連結軸に
配設され該連結軸の端部を前記摩擦板に当接させたばね
、および前記連結軸の先端部に突設された翼を具備した
ことを特徴とする回転翼の応力軽減装置。a casing that is erected on the rotor head via a friction plate and whose tip end is connected to the casing lid; a connecting shaft that is inserted into the casing and slides on a spherical bearing; A stress reduction device for a rotor blade, comprising a spring having an end in contact with the friction plate, and a blade projecting from the tip of the connecting shaft.
JP59242394A 1984-11-19 1984-11-19 Stress relieving device for rotary blade Pending JPS61123770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59242394A JPS61123770A (en) 1984-11-19 1984-11-19 Stress relieving device for rotary blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59242394A JPS61123770A (en) 1984-11-19 1984-11-19 Stress relieving device for rotary blade

Publications (1)

Publication Number Publication Date
JPS61123770A true JPS61123770A (en) 1986-06-11

Family

ID=17088496

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59242394A Pending JPS61123770A (en) 1984-11-19 1984-11-19 Stress relieving device for rotary blade

Country Status (1)

Country Link
JP (1) JPS61123770A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104819101A (en) * 2015-04-09 2015-08-05 成都绿迪科技有限公司 Wind power generation device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104819101A (en) * 2015-04-09 2015-08-05 成都绿迪科技有限公司 Wind power generation device

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