JPS59217030A - Suppressing device for vibration of rotary body - Google Patents
Suppressing device for vibration of rotary bodyInfo
- Publication number
- JPS59217030A JPS59217030A JP9101283A JP9101283A JPS59217030A JP S59217030 A JPS59217030 A JP S59217030A JP 9101283 A JP9101283 A JP 9101283A JP 9101283 A JP9101283 A JP 9101283A JP S59217030 A JPS59217030 A JP S59217030A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic conductive
- conductive material
- weight
- vibration
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/041—Passive magnetic bearings with permanent magnets on one part attracting the other part
- F16C32/0412—Passive magnetic bearings with permanent magnets on one part attracting the other part for radial load mainly
- F16C32/0414—Passive magnetic bearings with permanent magnets on one part attracting the other part for radial load mainly with facing axial projections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
- F16F15/035—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means by use of eddy or induced-current damping
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、回転体用制振装置に係シ、特に回転体とは非
接触に回転体の振動エネルヤを吸収する渦電流会の割振
装置に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a vibration damping device for a rotating body, and more particularly to an eddy current damping device that absorbs vibration energy of a rotating body without contacting the rotating body. .
回転体に生起された振動エネルギを吸収する制振装置と
しては、従来、種々のクイズのものが考えられている。Conventionally, various types of quiz devices have been considered as vibration damping devices that absorb vibration energy generated in a rotating body.
このような割振装置のなか■
流域の割振装置は、通常、第１図に示すように構成され
ている。すなわち、回転体本体１に連結された軸２の外
周に磁性材製の円板３を固定している。この円板３線周
級部に厚内部４が形成されている。そして、上記厚内部
４が磁束通路の一部となるように磁石５を設けている。Among such allocation devices, a watershed allocation device is usually constructed as shown in FIG. That is, a disk 3 made of a magnetic material is fixed to the outer periphery of a shaft 2 connected to a rotary body 1. A thick interior 4 is formed in the three-wire circumferential portion of this disc. The magnet 5 is provided so that the thick interior 4 becomes a part of the magnetic flux path.
磁石５は、一対の磁極面を上記厚内部４０両面に対向さ
せた断面Ｃ字状の冒−り６と、このヨーク６内に収容さ
れたコイル１とで構成されておシ、上記口−り６が静止
部＃８に固定されている。そして、ヨーク６の前記厚肉
部４に対向する面、つｔｂ磁極面には、銅などのように
非磁性良導電材で形成されり環状板ｙ ａ ｙ ｙ ｂ
ｉ”それぞれ固定されている・
しかして、この装置は次のような原理で制振機能を発揮
している。すなわち、回転体本体１を回転させている間
、コイル７を付勢し、との付勢によって発生した磁束を
ヨーク７〜環状板９８〜ギヤゾ〜円板３の厚肉部４〜ギ
ャグ〜環状板９ｂ〜ヨーク７の経路で通過させる。この
とき、回転体本体１が無振動状態のときには環状板９＆
、９ｂ内の磁束通過位置も不変に保たれ環状板９ｍ 、
９ｂ内には電流が流れない。しかし、回転体本体１が振
動すると、円板３の厚肉部４の位置が変動するので、こ
れに伴なって環状板９ｍ、９ｂ内の磁束通過位置も変化
し、この結果、環状板９ｇ、９ｂ内に渦電流が生起され
る。このようＫｍｍ版板９ｈ９ｂ内に渦電流が流れると
、この渦電流と厚肉部４との間に電磁力が発生し、この
電磁力は振動の変位方向とは逆方向に作用する。すなわ
ち、上記渦電流の形で振動エネルギを吸収するように・
している。The magnet 5 is composed of an opening 6 having a C-shaped cross section with a pair of magnetic pole faces facing both sides of the thick interior 40, and a coil 1 housed in this yoke 6. 6 is fixed to stationary part #8. The surface of the yoke 6 facing the thick portion 4, that is, the magnetic pole surface tb, is provided with an annular plate made of a non-magnetic and highly conductive material such as copper.
Therefore, this device exhibits a vibration damping function based on the following principle. That is, while the rotating body 1 is rotating, the coil 7 is energized, and The magnetic flux generated by the energization is caused to pass through the path of the yoke 7 - the annular plate 98 - the gearzo - the thick part 4 of the disc 3 - the gag - the annular plate 9b - the yoke 7. At this time, the rotating body 1 is vibration-free. In the state, the annular plate 9 &
, 9b, the magnetic flux passing position is also kept unchanged, and the annular plate 9m,
No current flows through 9b. However, when the rotor main body 1 vibrates, the position of the thick part 4 of the disc 3 changes, and accordingly, the magnetic flux passing position within the annular plates 9m and 9b also changes, and as a result, the annular plate 9g , 9b. When an eddy current flows in the Kmm plate 9h9b, an electromagnetic force is generated between the eddy current and the thick portion 4, and this electromagnetic force acts in a direction opposite to the direction of vibration displacement. In other words, the vibration energy is absorbed in the form of the eddy current.
are doing.
しかしながら、上記のように構成された制振装置にあっ
ても次のような問題があった。すなわち、非磁性良導電
材で形成されｔｉ状板ｊｌａ。However, even with the vibration damping device configured as described above, there are the following problems. That is, the Ti-shaped plate JLA is made of a non-magnetic and highly conductive material.
９ｂには、良好な非磁性材であること、電気抵抗の非常
に小さい材料であること、機械的強度性に富んだ材料で
あること、加工性に富んだ材料であることなどが望まれ
る。このため、一般には銅で環状板９％、９ｂが形成さ
れている。9b is desired to be a good non-magnetic material, a material with very low electrical resistance, a material with high mechanical strength, and a material with high workability. For this reason, the annular plate 9b is generally made of copper.
しかし、銅は比重が大きいので、環状板９ｍ。However, since copper has a high specific gravity, the annular plate is 9m long.
９ｂの重量が増し、この結果、装置全体が大重量化する
問題があった。There is a problem in that the weight of 9b increases, and as a result, the weight of the entire device increases.
本発明は、このような事情に鑑みてなされたもので、そ
の目的とするところは、渦電流姦のものにおいて、全体
の軽量化および低価格化を図れる回転体用制振装置を提
供することにある。The present invention has been made in view of the above circumstances, and its purpose is to provide a vibration damping device for a rotating body that can reduce the overall weight and cost in a device that uses eddy currents. It is in.
本発明に係る制振装置は、静止部に設けられる非磁性導
電板を、比重の小さい非磁性導電素材と、この素材の表
面で回転側磁性体に対向する面にメッキによって形成さ
れた上記素材よシ比重の大きい非磁性導電材層との複合
構造に形成したことを特徴としている。In the vibration damping device according to the present invention, a non-magnetic conductive plate provided in a stationary part is made of a non-magnetic conductive material with a small specific gravity, and the above-mentioned material is formed by plating on the surface of this material facing the rotating side magnetic body. It is characterized by being formed into a composite structure with a layer of non-magnetic conductive material having a high specific gravity.
発明者らの研究によると、回転体が振動したとき非磁性
導電板に流れる渦電流は、回転体側磁性体に対向する面
の表面近傍にしか流れないととが判った。したがって、
前述のように複合構造とし、表面のメッキ層を銅等の非
磁性良導電材で形成し、素材をアルミニウム等の軽量非
磁性材で形成しても制振機能は何ら損なわれない。そし
て、この場合には上述した組合せを採用できるので、非
磁性導電板全体の軽量化を図れ、結局、装置全体の軽量
化ならびに低価格化を図るととができる。According to the research conducted by the inventors, it has been found that when the rotating body vibrates, the eddy current that flows in the non-magnetic conductive plate flows only near the surface of the surface facing the magnetic body of the rotating body. therefore,
Even if it has a composite structure as described above, the plated layer on the surface is made of a non-magnetic, highly conductive material such as copper, and the material is made of a lightweight non-magnetic material such as aluminum, the damping function is not impaired in any way. In this case, since the above-mentioned combination can be employed, it is possible to reduce the weight of the entire non-magnetic conductive plate, and as a result, it is possible to reduce the weight and cost of the entire device.
以下、本発明の実施例を図面を参照しながら説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第２図は本発明の一実施例に係る制振装置の要部を軸心
を境にして片側だけと）出し軸方向に切断して示すもの
で、第１図と同一部分は同一符号で示しである。したが
って、重複する部分の説明は省略する。Fig. 2 shows the main parts of a vibration damping device according to an embodiment of the present invention, cut away from only one side of the axis and in the axial direction, and the same parts as in Fig. 1 are designated by the same symbols. This is an indication. Therefore, the explanation of the overlapping parts will be omitted.
この実施例では、ヨ一つての磁極面に固定された非磁性
導電板１９ｈ 、 １９ｂの構造が異なっている。すな
わち、非磁性導電板１９ａ。In this embodiment, the structure of the non-magnetic conductive plates 19h and 19b fixed to each magnetic pole face is different. That is, the non-magnetic conductive plate 19a.
１９ｂは、それぞれアルミニウムなどの軽量非磁性材で
形成され目−り６の磁極面に直接的に固定された環状素
材２０と、この環状素材２０の円板３側に位置する表面
にメッキによって形成された銅などの非磁性良導電材の
層２１とで構成されている。19b is formed by plating the annular material 20 which is made of a lightweight non-magnetic material such as aluminum and directly fixed to the magnetic pole surface of the eye 6, and the surface of this annular material 20 located on the disk 3 side. The layer 21 is made of a non-magnetic and highly conductive material such as copper.
このような構成であゐと、回転体の振動によって軸２が
変位すると円板３も変位し、これに伴なって非磁性良導
電板１９ｍ、１９ｂに渦電流が流れる。この渦電流は、
非磁性良導電板１９ｇ、１９ｂの円板３側に位置する表
面近傍に流れる。渦電流の流れる部分は、特に銅などの
非磁性良導材の層２１で形成されているので僅かの変位
でも大きな渦電流が流れる。したがって、制振性能は従
来のものと全く変わらない。With such a configuration, when the shaft 2 is displaced due to the vibration of the rotating body, the disk 3 is also displaced, and eddy currents accordingly flow in the non-magnetic and highly conductive plates 19m and 19b. This eddy current is
It flows near the surfaces of the non-magnetic and highly conductive plates 19g and 19b located on the disk 3 side. Since the portion through which eddy current flows is formed of the layer 21 of a non-magnetic and highly conductive material such as copper, even a slight displacement causes a large eddy current to flow. Therefore, the damping performance is no different from the conventional one.
そして、この場合には層２１だけが比重の太きい材料で
形成されているので、従来のものに較べて非磁性導電板
１９ｍ、１９ｂそのものを軽量化できる。したがって、
装置全体の軽量化および低価格化に寄与できることにな
る。In this case, since only the layer 21 is formed of a material with a high specific gravity, the weight of the non-magnetic conductive plates 19m and 19b themselves can be reduced compared to the conventional one. therefore,
This can contribute to reducing the weight and cost of the entire device.
なお、本発明は、上述した実施例に限定されるものでは
ない。たとえば、第３図に示すように軸２に円板３ｍ、
３ｂを設け、これらの間に非磁性導電板２９を位置させ
たものや、第４図に示すように円板３の厚肉部４の端面
および外周面にヨーク６の磁極面を対向させ、上記磁極
面に非磁性導電板３９ａ、３９ｂを固定するようにした
ものや、第５図に示すように磁石５の磁束供給源として
永久磁石４０を用いるとともに円板３０片面だけに同心
的に厚肉部４１゜４ｂを設け、これら厚肉部４ｍ 、４
ｂの端面にヨーク６の磁極面を対向させ、これら磁極面
に共通に非磁性導電板４９を設けるようにしたものにも
勿論適用できる。Note that the present invention is not limited to the embodiments described above. For example, as shown in FIG.
3b and a non-magnetic conductive plate 29 is placed between them, or the magnetic pole surface of the yoke 6 is placed opposite to the end face and outer peripheral surface of the thick part 4 of the disk 3 as shown in FIG. In some cases, non-magnetic conductive plates 39a and 39b are fixed to the magnetic pole faces, and in some cases, as shown in FIG. Thick portions 41° 4b are provided, and these thick portions 4m, 4
Of course, the present invention can also be applied to a structure in which the magnetic pole faces of the yoke 6 are opposed to the end faces of b, and a non-magnetic conductive plate 49 is commonly provided on these magnetic pole faces.
第１図は従来の割振装置の縦断面図、第２図は本発明の
一実施例に係ゐ割振装置の要部を軸心線を境にして片側
だけ取り出して示す縦断面図、第３図から第５図は本発
明のそれぞれ異表る実施例に係る制振装置の要部を軸心
線を境にして片側だけ取シ出してそれぞれ示す縦断面図
である。
１・・・回転体本体、２・・・軸、Ｊ ｅ Ｊ ａ ＠
３ｂ・・・円板、５・・・磁石、６・・・ヨーク、７
・・・コイル、１９ｈ、１９ｂ、２Ｂ、３９＊、３９ｂ
、４９・・・非磁性導電板。
出願人代理人 弁理士 鈴 江 武 彦第１図
第２図
第３図
第４図FIG. 1 is a longitudinal sectional view of a conventional allocating device, FIG. 2 is a longitudinal sectional view showing the essential parts of an allocating device according to an embodiment of the present invention with only one side taken out from the axis line, and FIG. 5 to 5 are longitudinal cross-sectional views showing the main parts of vibration damping devices according to different embodiments of the present invention, with only one side taken out from the axis. 1...Rotating body body, 2...Axis, J e J a @
3b...disc, 5...magnet, 6...yoke, 7
...Coil, 19h, 19b, 2B, 39*, 39b
, 49...Nonmagnetic conductive plate. Applicant's Representative Patent Attorney Takehiko Suzue Figure 1 Figure 2 Figure 3 Figure 4
Claims (1)
を磁束通路の一部とする関係に磁石を配置し、上記磁石
の上記磁性体に対向する磁極面に非磁性導電板を固定し
てなる渦電流入の割振装置において、前記非磁性導電板
は、比重の小さい非磁性導電素材と、この素材の前記磁
性体に対向する面にメッキによって形成された上記素材
よシ比重の大きい非磁性導電材層との複合構造に形成さ
れてなることを特徴とする回転体用制振装置。A magnetic body is fixed to a rotating body, and a magnet is arranged in a stationary part in such a relationship that the magnetic body becomes part of a magnetic flux path, and a non-magnetic conductive plate is fixed to a magnetic pole face of the magnet facing the magnetic body. In the eddy current input allocation device, the non-magnetic conductive plate is made of a non-magnetic conductive material with a low specific gravity and a non-magnetic conductive material with a high specific gravity formed by plating on the surface of this material facing the magnetic body. A vibration damping device for a rotating body, characterized in that it is formed in a composite structure with a conductive material layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9101283A JPS59217030A (en) | 1983-05-24 | 1983-05-24 | Suppressing device for vibration of rotary body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9101283A JPS59217030A (en) | 1983-05-24 | 1983-05-24 | Suppressing device for vibration of rotary body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59217030A true JPS59217030A (en) | 1984-12-07 |
Family
ID=14014621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9101283A Pending JPS59217030A (en) | 1983-05-24 | 1983-05-24 | Suppressing device for vibration of rotary body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59217030A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0875694A3 (en) * | 1997-04-18 | 2000-06-28 | Ebara Corporation | Damper device and turbomolecular pump with damper device |
| WO2008132064A1 (en) * | 2007-04-25 | 2008-11-06 | Siemens Aktiengesellschaft | Bearing device having a shaft that is rotatable in a magnetic fashion about an axis and a damping device |
| GB2593539A (en) * | 2020-03-27 | 2021-09-29 | Edwards Ltd | Magnetic damper, method of damping and turbomlecular pump |
-
1983
- 1983-05-24 JP JP9101283A patent/JPS59217030A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0875694A3 (en) * | 1997-04-18 | 2000-06-28 | Ebara Corporation | Damper device and turbomolecular pump with damper device |
| WO2008132064A1 (en) * | 2007-04-25 | 2008-11-06 | Siemens Aktiengesellschaft | Bearing device having a shaft that is rotatable in a magnetic fashion about an axis and a damping device |
| GB2593539A (en) * | 2020-03-27 | 2021-09-29 | Edwards Ltd | Magnetic damper, method of damping and turbomlecular pump |
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