JP3533818B2 - Flywheel equipment - Google Patents
Flywheel equipmentInfo
- Publication number
- JP3533818B2 JP3533818B2 JP08343596A JP8343596A JP3533818B2 JP 3533818 B2 JP3533818 B2 JP 3533818B2 JP 08343596 A JP08343596 A JP 08343596A JP 8343596 A JP8343596 A JP 8343596A JP 3533818 B2 JP3533818 B2 JP 3533818B2
- Authority
- JP
- Japan
- Prior art keywords
- flywheel
- fixed
- convex portion
- outer periphery
- adjusting
- 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 - Fee Related
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】この発明は、固定フライホイ
ルに慣性調整のための調整フライホイルを取り付けたフ
ライホイル装置に関するものである。
【０００２】
【従来の技術】図４は従来の高速用のフライホイル装置
の縦断面図を示し、１は軸受台２に軸受台３を介して回
転自在に支持された回転軸、４は回転軸１から径方向に
突出し、回転軸１と一体的に設けられた固定フライホイ
ルであり、その側面には凹部４ａが設けられている。５
は中心に中心孔５ａを有するとともに、側面の中心孔５
ａの周辺部に凸部５ｂを有する調整フライホイルであ
り、凹部４ａと凸部５ｂは嵌合し、かつ調整フライホイ
ル５は固定フライホイル４にボルト６により固定され
る。又、調整フライホイル５の外径は固定フライホイル
４の外径より大きくなっている。
【０００３】上記構成において、静止時には凹部４ａの
内周と凸部５ｂの内周即ち中心孔５ａの内周とは径方向
の隙間なく嵌合し、凹部４ａの外周と凸部５ｂの外周と
の間には径方向の隙間７が形成されている。ここで、回
転軸１を回転させると、調整フライホイル５の方が外径
方向へのふくらみ量（変位量）が大きいため、回転数が
上昇するに従って隙間７が次第に小さくなり、最終的に
零となる。このため、調整フライホイル５の偏心は凹部
４ａの外周との係合によりある程度に抑制され、偏心に
よる振動も抑制される。
【０００４】
【発明が解決しようとする課題】図５は調整フライホイ
ル５の振動の振幅と回転速度との関係を示し、イは外周
インロー部がない場合、即ち凹部４ａなどがない場合で
あり、このような場合には回転速度に従って調整フライ
ホイル５の振動の振幅は大きくなる。又、ロは外周イン
ロー部がある場合であり、回転速度が高速域になると、
凹部４ａの外周に凸部５ｂの外周が当接し、調整フライ
ホイル５の振動の振幅は小さくなる。ところが、図中に
示した中速域では、調整フライホイル５は偏心が生じ始
めて凹部４ａの内周と凸部５ｂの内周との間に隙間がで
き始めているが、凹部４ａの外周と凸部５ｂの外周が十
分に当接しないために振動の振幅は大きくなった。そこ
で、回転速度がもっと低い段階から凸部５ｂの外周と凹
部４ａの外周とが当接するようにすると、高回転域で凹
部４ａの外周は凸部５ｂの外周に押圧されて大きな応力
が加わるようになり、破損する恐れがあった。
【０００５】この発明は上記のような課題を解決するた
めに成されたものであり、調整フライホイルの偏心によ
る振動を抑制するとともに、固定フライホイルの破損を
防止することができるフライホイル装置を得ることを目
的とする。
【０００６】
【課題を解決するための手段】この発明に係るフライホ
イル装置は、固定フライホイルの側面にその凹部に固定
フライホイルより径が小さな調整フライホイルの凸部を
それぞれの外周が当接して嵌合するように調整フライホ
イルを取り付け、固定フライホイルの凹部及び調整フラ
イホイルの凸部を固定フライホイルの凹部の外周の遠心
力による半径方向ふくらみ量と調整フライホイルの凸部
の外周の遠心力による半径方向ふくらみ量が等しい位置
に設けたものである。
【０００７】
【発明の実施の形態】以下、この発明の実施の形態を図
面とともに説明する。図１はこの実施形態によるフライ
ホイル装置の一部縦断正面図を示し、８は鍛造により回
転軸１と一体に形成された固定フライホイルであり、そ
の両側面には凹部８ａが形成されている。９は中心に中
心孔９ａを有するとともに、側面の中心孔９ａの周辺部
に凹部８ａと嵌合する凸部９ｂを有する調整フライホイ
ルであり、中心孔９ａに回転軸１を挿通するとともに、
凸部９ｂを凹部８ａに嵌合し、調整フライホイル９に挿
通したボルト６を固定フライホイル８に螺着することに
より調整フライホイル９を固定フライホイル８に固定す
る。
【０００８】又、固定フライホイル８の外径は調整フラ
イホイル９の外径より大きく形成され、凹部８ａの外周
と凸部９ｂの外周、及び凹部８ａの内周と凸部９ｂの内
周とはいずれも隙間なく嵌合している。さらに、凹部８
ａの外周と凸部９ｂの外周は両フライホイル８，９の遠
心力による半径方向ふくらみ量が等しくなる位置に設け
られている。
【０００９】図２（ａ），（ｂ）は固定フライホイル８
及び調整フライホイル９における半径位置と回転時の応
力との関係図を示し、外周インロー部１０とは凹部８ａ
及び凸部９ｂの外周嵌合部のことである。又、σrは半
径方向応力，σtは周方向応力を示す。固定フライホイ
ル８では中心に最も大きな応力が加わり、調整フライホ
イル９では中心孔９ａの内周に最も大きな応力が加わる
ことが解る。ここで、中心孔がない一様厚さの回転円
板、及び中心孔がある一様厚さの回転円板の半径方向ふ
くらみ量δ１，δ２はそれぞれ式（１），（２）により
計算される。
【００１０】
【数１】
【００１１】上式において、ρは回転円板の密度，ωは
角速度，Ｅは弾性係数，νはポアソン比，ａは中心孔の
半径，ｂは回転円板の半径，ｒは半径位置である。式
（１），（２）で計算した結果をグラフで示すと、図３
（ａ），（ｂ）のようになり、図３（ａ）は固定フライ
ホイル８にほぼ相当し、図３（ｂ）は調整フライホイル
９にほぼ相当する。そこで、それぞれの中心から半径位
置が等しく、かつ半径方向ふくらみ量が等しい点（この
ような点が存在するのは、固定フライホイル８の外径が
調整フライホイル９の外径より大きいときのみであ
る。）を検出し、外周インロー部１０即ち凹部８ａの外
周及び凸部９ｂの外周をこの半径位置に一致させる。な
お、図２，図３の特性は回転数４００ｒｐｍのときのも
のであるが、回転数が変化しても外周インロー部１０で
の半径方向ふくらみ量は一致したままである。又、ボル
ト６は実際にはばか孔に挿通され、遠心力応力を分担す
ることはなく、無視できる。
【００１２】上記実施形態においては、固定フライホイ
ル８の凹部８ａの外周及び調整フライホイル９の凸部９
ｂの外周が遠心力による半径方向ふくらみ量（伸び）δ
１＝δ２の位置に設けられており、回転速度全域におい
てこの双方の間に隙間は生じず、しかも凸部９ｂの外周
から凹部８ａの外周へ大きな応力が加わることもない。
このように外周インロー部１０での伸びや応力の干渉が
ないために、偏心による振動は抑制され、応力による破
損も生じない。又、強度計算が単純となり、高精度の強
度計算を行うことができる。
【００１３】
【発明の効果】以上のようにこの発明によれば、固定フ
ライホイルの外径を調整フライホイルの外径より大きく
し、かつ相互に嵌合する固定フライホイルの凹部の外周
と調整フライホイルの凸部の外周を両フライホイルの遠
心力による半径方向ふくらみ量が一致する位置に設けて
おり、全回転域において両者間に隙間は生じず、大きな
応力も加わらない。このため、偏心による振動や応力に
よる破損を防止することができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flywheel device in which an adjustment flywheel for adjusting inertia is attached to a fixed flywheel. 2. Description of the Related Art FIG. 4 is a longitudinal sectional view of a conventional high-speed flywheel device, wherein 1 is a rotary shaft rotatably supported on a bearing base 2 via a bearing base 3 and 4 is a rotary shaft. It is a fixed flywheel that projects radially from the shaft 1 and is provided integrally with the rotating shaft 1, and has a recess 4 a on the side surface. 5
Has a central hole 5a at the center and a central hole 5
This is an adjusting flywheel having a convex portion 5b at the periphery of the portion a. The concave portion 4a and the convex portion 5b are fitted, and the adjusting flywheel 5 is fixed to the fixed flywheel 4 by bolts 6. The outer diameter of the adjusting flywheel 5 is larger than the outer diameter of the fixed flywheel 4. In the above configuration, at rest, the inner periphery of the concave portion 4a and the inner periphery of the convex portion 5b, that is, the inner periphery of the center hole 5a are fitted without a radial gap, and the outer periphery of the concave portion 4a and the outer periphery of the convex portion 5b are fitted. A radial gap 7 is formed between them. Here, when the rotating shaft 1 is rotated, the adjusting flywheel 5 has a larger swelling amount (displacement amount) in the outer diameter direction, so that the gap 7 gradually decreases as the rotation speed increases, and finally the zero is zero. It becomes. For this reason, the eccentricity of the adjustment flywheel 5 is suppressed to some extent by engagement with the outer periphery of the concave portion 4a, and the vibration due to the eccentricity is also suppressed. FIG. 5 shows the relationship between the amplitude of the vibration of the adjusting flywheel 5 and the rotation speed. FIG. 5 shows the case where there is no outer peripheral spigot, that is, the case where there is no recess 4a. In such a case, the amplitude of the vibration of the adjustment flywheel 5 increases according to the rotation speed. Also, b is the case where there is an outer spigot part, and when the rotation speed becomes a high speed region,
The outer periphery of the convex portion 5b abuts the outer periphery of the concave portion 4a, and the amplitude of the vibration of the adjusting flywheel 5 decreases. However, in the middle speed range shown in the drawing, the adjusting flywheel 5 starts to be eccentric and a gap starts to be formed between the inner periphery of the concave portion 4a and the inner periphery of the convex portion 5b. The amplitude of the vibration was increased because the outer periphery of the portion 5b did not sufficiently contact. Therefore, when the outer periphery of the convex portion 5b and the outer periphery of the concave portion 4a are brought into contact with each other from a lower rotation speed stage, the outer periphery of the concave portion 4a is pressed against the outer periphery of the convex portion 5b in a high rotation region so that a large stress is applied. And could be damaged. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and provides a flywheel device capable of suppressing vibration due to eccentricity of an adjustable flywheel and preventing breakage of a fixed flywheel. The purpose is to get. A flywheel device according to the present invention is provided with a convex portion of an adjusting flywheel having a smaller diameter than the fixed flywheel in a concave portion on a side surface of the fixed flywheel.
Attach the adjusting flywheel so that the outer circumferences abut against each other, and fit the concave portion of the fixed flywheel and the adjusting flywheel.
Fix the convex part of the foil. Centrifuge the outer circumference of the concave part of the flywheel.
But on the radial bulge amount equal position by centrifugal force in the radial direction swelling amount and an outer periphery of the convex portion of the adjusting flywheel by force. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially longitudinal front view of a flywheel device according to this embodiment. Reference numeral 8 denotes a fixed flywheel integrally formed with the rotary shaft 1 by forging, and concave portions 8a are formed on both side surfaces thereof. . Numeral 9 is an adjusting flywheel having a center hole 9a at the center and a convex portion 9b fitted around the center hole 9a on the side surface and fitted with the concave portion 8a. The rotating flywheel 1 is inserted through the center hole 9a,
The adjusting flywheel 9 is fixed to the fixed flywheel 8 by fitting the convex portion 9b into the concave portion 8a and screwing the bolt 6 inserted into the adjusting flywheel 9 to the fixed flywheel 8. The outer diameter of the fixed flywheel 8 is formed larger than the outer diameter of the adjusting flywheel 9, and the outer periphery of the concave portion 8a and the outer periphery of the convex portion 9b, and the inner periphery of the concave portion 8a and the inner periphery of the convex portion 9b. Are fitted without any gap. Further, the recess 8
a of the flywheels 8 and 9
It is provided at a position where the amount of bulge in the radial direction due to the heart force is equal. FIGS. 2A and 2B show a fixed flywheel 8.
FIG. 4 is a diagram showing a relationship between a radial position of the adjustment flywheel 9 and a stress at the time of rotation.
And the outer peripheral fitting portion of the convex portion 9b. Further, σ r indicates a radial stress and σ t indicates a circumferential stress. It can be seen that the largest stress is applied to the center in the fixed flywheel 8 and the largest stress is applied to the inner periphery of the center hole 9a in the adjustment flywheel 9. Here, the radial bulge amounts δ1 and δ2 of a rotating disk having a uniform thickness without a center hole and a rotating disk having a uniform thickness with a center hole are calculated by equations (1) and (2), respectively. You. [0010] In the above equation, ρ is the density of the rotating disk, ω is the angular velocity, E is the elastic coefficient, ν is the Poisson's ratio, a is the radius of the center hole, b is the radius of the rotating disk, and r is the radial position. . FIG. 3 is a graph showing the results calculated by equations (1) and (2).
3A and 3B, FIG. 3A substantially corresponds to the fixed flywheel 8, and FIG. 3B substantially corresponds to the adjustment flywheel 9. Therefore, a point where the radial position is equal from each center and the radial swell amount is equal (such a point exists only when the outer diameter of the fixed flywheel 8 is larger than the outer diameter of the adjustment flywheel 9). Is detected), and the outer periphery of the outer peripheral spigot portion 10, that is, the outer periphery of the concave portion 8a and the outer periphery of the convex portion 9b are made to coincide with this radial position. Note that the characteristics in FIGS. 2 and 3 are obtained when the rotational speed is 400 rpm, but the radial bulge amount in the outer peripheral spigot portion 10 remains the same even when the rotational speed changes. Further, the bolt 6 is actually inserted into the fool hole and does not share the centrifugal stress and can be ignored. In the above embodiment, the outer periphery of the concave portion 8a of the fixed flywheel 8 and the convex portion 9 of the adjusting flywheel 9 are formed.
b is the radial swelling (elongation) δ due to centrifugal force
1 = δ2, there is no gap between the two over the entire rotation speed range, and no large stress is applied from the outer periphery of the convex portion 9b to the outer periphery of the concave portion 8a.
As described above, since there is no interference of the elongation and the stress in the outer peripheral spigot portion 10, the vibration due to the eccentricity is suppressed, and the damage due to the stress does not occur. Further, the strength calculation becomes simple, and the strength calculation can be performed with high accuracy. As described above , according to the present invention, the outer diameter of the fixed flywheel is made larger than the outer diameter of the adjusting flywheel, and the outer diameter of the concave portion of the fixed flywheel fitted with the adjusting wheel is adjusted. The outer periphery of the convex portion of the flywheel is provided at a position where the amounts of radial bulge due to the centrifugal force of both flywheels coincide with each other, so that there is no gap between the two over the entire rotation range, and no large stress is applied. For this reason, damage due to vibration or stress due to eccentricity can be prevented.
【図面の簡単な説明】
【図１】この発明によるフライホイル装置の一部縦断正
面図である。
【図２】この発明による固定フライホイル及び調整フラ
イホイルの回転時の応力分布図である。
【図３】この発明による固定フライホイル及び調整フラ
イホイルの半径方向ふくらみ量の分布図である。
【図４】従来のフライホイル装置の縦断面図である。
【図５】従来のフライホイル装置の調整フライホイルの
振幅と回転速度との関係図である。
【符号の説明】
１…回転軸
８…固定フライホイル
８ａ…凹部
９…調整フライホイル
９ａ…中心孔
９ｂ…凸部
１０…外周インロー部BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial longitudinal front view of a flywheel device according to the present invention. FIG. 2 is a stress distribution diagram during rotation of a fixed flywheel and an adjusting flywheel according to the present invention. FIG. 3 is a distribution diagram of a radial swelling amount of a fixed flywheel and an adjustment flywheel according to the present invention. FIG. 4 is a longitudinal sectional view of a conventional flywheel device. FIG. 5 is a diagram showing a relationship between amplitude and rotation speed of an adjusting flywheel of a conventional flywheel device. [Description of Signs] 1 ... Rotating shaft 8 ... Fixed flywheel 8a ... Recess 9 ... Adjustment flywheel 9a ... Center hole 9b ... Protrusion 10 ... Outer peripheral spigot
Claims (1)
面に凹部を有する固定フライホイルと、中心に孔を有す
るとともに、側面に固定フライホイルの凹部とそれぞれ
の外周が当接するように嵌合する凸部を有し、固定フラ
イホイルの側面に取り付けられた調整フライホイルを備
えたフライホイル装置において、固定フライホイルの外
径を調整フライホイルの外径より大きくするとともに、
固定フライホイルの凹部及び調整フライホイルの凸部を
該凹部の外周の遠心力による半径方向ふくらみ量と調整
フライホイルの凸部の外周の遠心力による半径方向ふく
らみ量が等しくなる位置に設けたことを特徴とするフラ
イホイル装置。(57) is formed in a [Claims 1] together with the rotating shaft, and a fixed flywheel having a recess on a side surface, and has a hole in the center, respectively the recess of the fixed flywheel to the side surface
In the flywheel device having a convex portion fitted so that the outer circumference of the flywheel abuts and having an adjustment flywheel attached to the side surface of the fixed flywheel, the outer diameter of the fixed flywheel is made larger than the outer diameter of the adjusted flywheel. As well as
Adjust the recess of the fixed flywheel and the protrusion of the adjustment flywheel.
Flywheel and wherein the amount bulging radially due to centrifugal force of the outer periphery of the convex portion of the radial bulge amount and adjustment flywheel due to the centrifugal force of the outer periphery of the concave portion is provided at equal positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08343596A JP3533818B2 (en) | 1996-04-05 | 1996-04-05 | Flywheel equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08343596A JP3533818B2 (en) | 1996-04-05 | 1996-04-05 | Flywheel equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09273601A JPH09273601A (en) | 1997-10-21 |
| JP3533818B2 true JP3533818B2 (en) | 2004-05-31 |
Family
ID=13802362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08343596A Expired - Fee Related JP3533818B2 (en) | 1996-04-05 | 1996-04-05 | Flywheel equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3533818B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727177B (en) * | 2013-12-04 | 2015-11-18 | 中广核工程有限公司 | There is the nuclear power main pump flywheel of over-speed protection function |
| CN114383828A (en) * | 2021-12-13 | 2022-04-22 | 常州莱可智能科技有限公司 | Assembled rack for flywheel stress experiment |
-
1996
- 1996-04-05 JP JP08343596A patent/JP3533818B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09273601A (en) | 1997-10-21 |
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