JPH09273601A - Flywheel - Google Patents
FlywheelInfo
- Publication number
- JPH09273601A JPH09273601A JP8343596A JP8343596A JPH09273601A JP H09273601 A JPH09273601 A JP H09273601A JP 8343596 A JP8343596 A JP 8343596A JP 8343596 A JP8343596 A JP 8343596A JP H09273601 A JPH09273601 A JP H09273601A
- Authority
- JP
- Japan
- Prior art keywords
- flywheel
- fixed
- adjusting
- recessed
- fitted
- 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.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 abstract description 6
- 238000005266 casting Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
Description
【０００１】[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。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flywheel device in which an adjusting flywheel for inertia adjustment is attached to a fixed flywheel.
【０００２】[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。2. Description of the Related Art FIG. 4 is a vertical cross-sectional view of a conventional flywheel device for high speed, 1 is a rotary shaft rotatably supported by a bearing base 2 through a bearing base 3, and 4 is a rotary shaft 1 from the rotary shaft 1. It is a fixed flywheel that projects in the radial direction and is provided integrally with the rotary shaft 1, and has a recess 4a on its side surface. 5
Has a center hole 5a at the center and a side center hole 5a.
It is an adjusting flywheel having a convex portion 5b in the peripheral part of 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.
【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。In the above structure, when stationary, the inner periphery of the concave portion 4a and the inner periphery of the convex portion 5b, that is, the inner periphery of the central hole 5a are fitted with each other without a radial gap, and the outer periphery of the concave portion 4a and the outer periphery of the convex portion 5b. A radial gap 7 is formed between them. Here, when the rotary shaft 1 is rotated, the swelling amount (displacement amount) in the outer diameter direction of the adjusting flywheel 5 is larger, so that the gap 7 becomes gradually smaller as the number of rotations increases, and finally becomes zero. Becomes Therefore, the eccentricity of the adjusting flywheel 5 is suppressed to some extent by the engagement with the outer periphery of the recess 4a, and the vibration due to the eccentricity is also suppressed.
【０００４】[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。FIG. 5 shows the relationship between the amplitude of the vibration of the adjusting flywheel 5 and the rotation speed. A is the case where there is no outer peripheral spigot, that is, the case where there is no recess 4a. In that case, the amplitude of the vibration of the adjusting flywheel 5 increases according to the rotation speed. In addition, B is the case where there is a spigot on the outer periphery, and when the rotation speed is in the high speed range,
The outer circumference of the convex portion 5b comes into contact with the outer circumference of the concave portion 4a, and the amplitude of vibration of the adjusting flywheel 5 is reduced. However, in the medium speed range shown in the drawing, the adjusting flywheel 5 starts to be eccentric and a gap is begun to be formed between the inner circumference of the concave portion 4a and the inner circumference of the convex portion 5b. Since the outer periphery of the portion 5b does not sufficiently contact, the amplitude of vibration becomes large. Therefore, if 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 the stage where the rotation speed is lower, the outer periphery of the concave portion 4a is pressed against the outer periphery of the convex portion 5b in the high rotation range and a large stress is applied. There was a risk of damage.
【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。The present invention has been made to solve the above problems, and provides a flywheel device capable of suppressing the vibration due to the eccentricity of the adjusting flywheel and preventing the fixed flywheel from being damaged. The purpose is to get.
【０００６】[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大きな調整フライホイルの凸部を
嵌合するように調整フライホイルを取り付け、固定フラ
イホイルの凹部の外周及び調整フライホイルの凸部の外
周を遠心力によるふくらみ量が等しい位置に設けたもの
である。SUMMARY OF THE INVENTION A flywheel device according to the present invention has an adjusting flywheel which is fitted on a side surface of a fixed flywheel so that a convex portion of the adjusting flywheel having a diameter larger than that of the fixed flywheel is fitted in the concave portion. The outer circumference of the concave portion of the attached and fixed flywheel and the outer circumference of the convex portion of the adjustment flywheel are provided at positions where the bulges due to centrifugal force are equal.
【０００７】[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。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a partially longitudinal front view of a flywheel device according to this embodiment, in which a fixed flywheel 8 is integrally formed with a rotary shaft 1 by forging, and concave portions 8a are formed on both side surfaces thereof. . Reference numeral 9 is an adjustment flywheel having a central hole 9a at the center and a convex portion 9b which fits into the concave portion 8a in the peripheral portion of the central hole 9a on the side surface. The rotary shaft 1 is inserted through the central 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 through the adjusting flywheel 9 into the fixed flywheel 8.
【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の外周は遠心力によるふくらみ量が
等しくなる位置に設けられている。Further, the outer diameter of the fixed flywheel 8 is formed larger than the outer diameter of the adjusting flywheel 9, and the outer circumference of the recess 8a and the outer circumference of the projection 9b, and the inner circumference of the recess 8a and the inner circumference of the projection 9b. Are fitted without any gaps. Furthermore, the recess 8
The outer periphery of a and the outer periphery of the convex portion 9b are provided at positions where the bulges due to the centrifugal force are equal.
【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。2 (a) and 2 (b) show a fixed flywheel 8
And a diagram showing the relationship between the radial position of the adjusting flywheel 9 and the stress at the time of rotation.
And the outer peripheral fitting portion of the convex portion 9b. Σ r is the radial stress and σ t is the circumferential stress. It can be seen that the fixed flywheel 8 has the largest stress applied to the center, and the adjusting flywheel 9 has the largest stress applied to the inner circumference of the center hole 9a. Here, the radial bulges δ1 and δ2 of a rotating disk of uniform thickness without a central hole and a rotating disk of uniform thickness with a central hole are calculated by equations (1) and (2), respectively. It
【００１０】[0010]
【数１】 [Equation 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。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 central 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 the equations (1) and (2).
As shown in FIGS. 3A and 3B, FIG. 3A substantially corresponds to the fixed flywheel 8 and FIG. 3B substantially corresponds to the adjusting flywheel 9. Therefore, points where the radial positions are the same from each center and the radial bulges are the same (these points exist 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 inlay portion 10, that is, the outer periphery of the concave portion 8a and the outer periphery of the convex portion 9b are matched with this radial position. Although the characteristics shown in FIGS. 2 and 3 are obtained when the rotation speed is 400 rpm, the radial bulge amount in the outer periphery inlay portion 10 remains the same even if the rotation speed changes. Further, the bolt 6 is actually inserted into the fool hole, does not share the centrifugal force stress, and can be ignored.
【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。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 arranged.
The outer circumference of b is the amount of radial bulging (elongation) δ due to centrifugal force.
Since it is provided at a position of 1 = δ2, no gap is formed between the two in the entire rotation speed, and no great stress is applied from the outer circumference of the convex portion 9b to the outer circumference of the concave portion 8a.
As described above, since there is no elongation or stress interference in the outer periphery inlay portion 10, vibration due to eccentricity is suppressed and damage due to stress does not occur. Further, the strength calculation is simplified, and the strength calculation can be performed with high accuracy.
【００１３】[0013]
【発明の効果】以下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。As described below, 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 periphery of the recess of the fixed flywheel and the adjusting flywheel which are fitted to each other are adjusted. The outer circumference of the convex portion is provided at a position where the radial bulging amount due to the centrifugal force is the same, and no gap is generated between the two in the entire rotation range, and no large stress is applied. Therefore, vibration due to eccentricity and damage due to stress can be prevented.
【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。FIG. 1 is a partially longitudinal front view of a flywheel device according to the present invention.
【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。FIG. 2 is a stress distribution diagram during rotation of the fixed flywheel and the adjusting flywheel according to the present invention.
【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。FIG. 3 is a distribution diagram of the radial bulge amount of the fixed flywheel and the adjustment flywheel according to the present invention.
【図４】従来のフライホイル装置の縦断面図である。FIG. 4 is a vertical cross-sectional view of a conventional flywheel device.
【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。FIG. 5 is a diagram showing the relationship between the amplitude and the rotation speed of the adjusting flywheel of the conventional flywheel device.
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 DESCRIPTION OF SYMBOLS 1 ... Rotating shaft 8 ... Fixed flywheel 8a ... Recessed portion 9 ... Adjusting flywheel 9a ... Center hole 9b ... Convex portion 10 ... Outer peripheral inlay portion
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の外周及
び調整フライホイルの凸部の外周を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。1. A fixed flywheel which is integrally formed with a rotary shaft and has a concave portion on a side surface, and a convex portion which has a hole at the center and which is fitted to a concave portion of the fixed flywheel on a side surface, and is fixed. In a flywheel device with an adjustment flywheel attached to the side of the flywheel,
The outer diameter of the fixed flywheel was made larger than the outer diameter of the adjustment flywheel, and the outer circumference of the concave portion of the fixed flywheel and the outer circumference of the convex portion of the adjustment flywheel were provided at positions where the radial bulges due to centrifugal force were equal. Flywheel device characterized by.
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 true JPH09273601A (en) | 1997-10-21 |
| JP3533818B2 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727177A (en) * | 2013-12-04 | 2014-04-16 | 大连洁能重工机械有限公司 | Nuclear power main pump flywheel with overspeed 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
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727177A (en) * | 2013-12-04 | 2014-04-16 | 大连洁能重工机械有限公司 | Nuclear power main pump flywheel with overspeed 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3533818B2 (en) | 2004-05-31 |
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