JPS5837316A - Magnetic bearing device - Google Patents
Magnetic bearing deviceInfo
- Publication number
- JPS5837316A JPS5837316A JP13541581A JP13541581A JPS5837316A JP S5837316 A JPS5837316 A JP S5837316A JP 13541581 A JP13541581 A JP 13541581A JP 13541581 A JP13541581 A JP 13541581A JP S5837316 A JPS5837316 A JP S5837316A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- bearing
- magnetic body
- bearing device
- annular magnetic
- 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
- F16C39/00—Relieving load on bearings
- F16C39/06—Relieving load on bearings using magnetic means
- F16C39/063—Permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は磁気軸受装＠１−関する。[Detailed description of the invention] The present invention relates to a magnetic bearing assembly@1-.
回転体のラジアル方向の荷重を支持する軸受として、磁
気軸受装置が知られている。第１図は従来用いられてい
るこの装置を示すもので次のよう１：構成されている。A magnetic bearing device is known as a bearing that supports the load of a rotating body in the radial direction. FIG. 1 shows this conventionally used device, which is constructed as follows.
図中１は縦形の回転体であり、この回転体ｌの上＠１ニ
ネジ締め、あるいは圧入等の方法響二より二つの極を構
成する磁性体２が締結されている。一方、上記環状の磁
性体２の上側（二は、一端が図示極性１；磁化された環
状永久磁石３の両磁極−ユ接するよう１二位置する１対
の環状磁性体４．５の他端が対向しており、上記永久磁
石３と磁性体４．５とは静止体６区−固定されている。In the figure, reference numeral 1 denotes a vertical rotating body, and a magnetic body 2 constituting two poles is fastened to the top of this rotating body 1 by screwing or press-fitting. On the other hand, the other end of a pair of annular magnetic bodies 4.5 is located above the annular magnetic body 2 (one end has polarity 1 as shown; both magnetic poles of the magnetized annular permanent magnet 3 are in contact with each other). are facing each other, and the permanent magnet 3 and the magnetic body 4.5 are fixed to a stationary body.
しかして、この装置ｉｔ二よると、回転体側の磁性体２
と、永久磁石３によって磁化された静止側磁性体４．５
との間ｇ；生じる磁気的吸引力６；より。According to this device it2, the magnetic body 2 on the rotating body side
and a stationary side magnetic body 4.5 magnetized by the permanent magnet 3.
and the resulting magnetic attraction force 6.
回転体１のラジアル方向の位置が拘束され、これシニよ
って軸受としてのＳ能が発揮される。The position of the rotating body 1 in the radial direction is restrained, and the S function as a bearing is thereby exhibited.
しかしながら、上記構成の従来装置１ｃおいては。However, in the conventional device 1c having the above configuration.
次のような問題点があった。すなわち回転体１が回転す
ると回転体ｌはその形状、構造により遠心力Ｃ二よって
第２図で二点鎖線で示した元の状１１Ｊｔ二対して、実
線で示すところの軸方向に縮む変形をして１回転側の磁
性体２と静止側の磁性体４との隙間が大きくなること（
二より、軸受特性としての軸方向吸引力や、バネ定数が
小さくなり、軸受としての機能が低下することが知られ
ている。There were the following problems. That is, when the rotating body 1 rotates, due to its shape and structure, the rotating body 1 is deformed by the centrifugal force C2 to contract in the axial direction, as shown by the solid line, with respect to its original state 11Jt2, shown by the two-dot chain line in FIG. As a result, the gap between the magnetic body 2 on the one-rotation side and the magnetic body 4 on the stationary side increases (
Secondly, it is known that the axial suction force and spring constant as bearing characteristics decrease, and the function as a bearing deteriorates.
本発明は上述の点を鑑みてなされたもので、その目的と
するところは、回転体が回転し、遠心力（二より軸方向
シニ縮む変形をし、軸受の隙間が広がり、軸受性能が低
下することを防止することである。The present invention has been made in view of the above-mentioned points, and its purpose is to cause the rotating body to rotate and undergo centrifugal force (deformation that shrinks in the axial direction), which widens the gap between the bearings and deteriorates the bearing performance. The goal is to prevent people from doing so.
以下（二本発明の詳細を第３図Ｃ示す実施例Ｃ；基いて
説明する。本発明の磁気軸受としての作動原理は第１因
に示す従来装置と等価で構造的には静止側磁性体４．５
、回転側磁性体１２と永久磁石３、回転体１、静止体６
より構成されている。第１図の従来装置との相違点は回
転側の環状磁性体１２の円環と外環の接続部が傾斜を有
し、外周へ行くｉニジたがって低くなっていることであ
る。The details of the present invention will be explained below based on Example C shown in Figure 3C. 4.5
, rotating side magnetic body 12 and permanent magnet 3, rotating body 1, stationary body 6
It is composed of The difference from the conventional device shown in FIG. 1 is that the connecting portion between the ring of the annular magnetic body 12 on the rotating side and the outer ring has an inclination and becomes lower as it goes toward the outer periphery.
このような形状であると回転体１が回転し、遠心力ｉ；
より軸方向Ｃユ縮む変形をしても、環状磁性体１２が第
４因に示すよう（二液形して、磁気軸受隙間７の広がる
のを補正し軸受特性の低下を防ぐことができる。With such a shape, the rotating body 1 rotates and a centrifugal force i;
Even if the annular magnetic body 12 is deformed by shrinking further in the axial direction C, the annular magnetic body 12 can compensate for the widening of the magnetic bearing gap 7 and prevent deterioration of the bearing characteristics, as shown in the fourth factor.
以上述べたようシ一本発明６二あっては回転体が回転に
より軸方向に縮むようなことがあっても回転側環状磁性
体の変形により磁気軸受隙間を補正し磁気軸受性能の低
下を防止できる磁気軸受装置をAs described above, even if the rotating body shrinks in the axial direction due to rotation, the magnetic bearing gap is corrected by the deformation of the rotating side annular magnetic body, thereby preventing the deterioration of the magnetic bearing performance. A magnetic bearing device that can
第１図及び＄２５！！ｌは従来装置の一部断面図、第３
図及び第４図は本発明の実施例を示す断面図である。
ｌ・・・回転体 ３用永久磁石４．５・・・環
状磁性体 １２・・・環状磁性体（７３１７）代理人
弁理士 則 近 憲 佑（ほか１名）Figure 1 and $25! ! l is a partial cross-sectional view of the conventional device;
FIG. 4 is a sectional view showing an embodiment of the present invention. l... Permanent magnet for rotating body 3 4.5... Annular magnetic body 12... Annular magnetic body (7317) agent
Patent Attorney Kensuke Chika (and 1 other person)
Claims (1)
料と静止体に取付けられた。上記磁性材料と対向する環
状の永久磁石との間に生じる磁気的吸引力で上記回転体
のラジアル方向の位ＩＩ″を拘束するよう番−した磁気
軸受装ａ［において、回転側磁性体形状（二おいて内外
周部の円筒部とそれを継なぐ円錐殻から成ることを特徴
とする磁気軸受装置。A rotating body (an annular magnetic material forming 8 poles with two attached N and others attached to a stationary body.The magnetic attraction force generated between the magnetic material and the opposing annular permanent magnet causes the rotation of the rotating body. In the magnetic bearing device a[, which is designed to restrain the position II'' in the radial direction, the shape of the rotating side magnetic body (2) is a magnetic bearing device characterized in that it consists of a cylindrical portion on the inner and outer peripheries and a conical shell connecting the cylindrical portions. Bearing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13541581A JPS5837316A (en) | 1981-08-31 | 1981-08-31 | Magnetic bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13541581A JPS5837316A (en) | 1981-08-31 | 1981-08-31 | Magnetic bearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5837316A true JPS5837316A (en) | 1983-03-04 |
Family
ID=15151191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13541581A Pending JPS5837316A (en) | 1981-08-31 | 1981-08-31 | Magnetic bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5837316A (en) |
-
1981
- 1981-08-31 JP JP13541581A patent/JPS5837316A/en active Pending
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