JPH01141224A - Magnetic bearing - Google Patents
Magnetic bearingInfo
- Publication number
- JPH01141224A JPH01141224A JP29653187A JP29653187A JPH01141224A JP H01141224 A JPH01141224 A JP H01141224A JP 29653187 A JP29653187 A JP 29653187A JP 29653187 A JP29653187 A JP 29653187A JP H01141224 A JPH01141224 A JP H01141224A
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- magnetic
- fixed
- peripheral surface
- end surfaces
- 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
- 230000002093 peripheral effect Effects 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000000696 magnetic material Substances 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000002887 superconductor Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical group [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
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
- F16C32/0436—Passive magnetic bearings with a conductor on one part movable with respect to a magnetic field, e.g. a body of copper on one part and a permanent magnet on the other part
- F16C32/0438—Passive magnetic bearings with a conductor on one part movable with respect to a magnetic field, e.g. a body of copper on one part and a permanent magnet on the other part with a superconducting body, e.g. a body made of high temperature superconducting material such as YBaCuO
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
□ 本発明は、超電導現象のマイスナー効果を利用して
、回転体をラジアルおよびスラスト方向に支持する反発
形の磁気軸受に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application □ The present invention relates to a repulsion type magnetic bearing that supports a rotating body in the radial and thrust directions by utilizing the Meissner effect of superconducting phenomenon.
従来の技術
近年、超電導材料を利用した反発形磁気軸受が利用され
つつある。BACKGROUND OF THE INVENTION In recent years, repulsive magnetic bearings using superconducting materials have come into use.
以下、図面を参照しながら従来の磁気軸受の一例につい
て説明する。An example of a conventional magnetic bearing will be described below with reference to the drawings.
第４図は従来の磁気軸受の半断面図を示している０回転
軸４には回転軸４と同心状でかつ円柱状の超電導部材１
が固定されており、回転部１０を形成している。また、
回転軸４は２つの固定されたラジアル軸受６との固体接
触によって、ラジアル方向への運動を規制されている。FIG. 4 shows a half-sectional view of a conventional magnetic bearing.The rotating shaft 4 has a cylindrical superconducting member 1 concentric with the rotating shaft 4.
is fixed and forms the rotating part 10. Also,
Movement of the rotating shaft 4 in the radial direction is restricted by solid contact with two fixed radial bearings 6.
さらに、超電導部材ｌの一方の端面ば、鉄や鋼等の磁性
材料よりなる固定部材２の一面と対向しており、また、
超電導部材１と対向する固定部材２の面には回転軸４に
対して同心状にコイル３が配設されている。Furthermore, one end surface of the superconducting member l faces one surface of the fixing member 2 made of a magnetic material such as iron or steel, and
A coil 3 is disposed concentrically with respect to the rotation shaft 4 on the surface of the fixed member 2 facing the superconducting member 1 .
ここで、コイル３に所定の電流を流すと、磁路Ｃを形成
するが、超電導部材１０特育の効果であるマイスナー効
果によって超電導部材１と固定部材２の間には磁気反発
力が働き、その反発力によって、超電導部材１は固定部
材２より所定の浮上量ｄだけの空隙を持つこととなり、
非接触によるスラスト軸受の機能を持つことができる。Here, when a predetermined current is passed through the coil 3, a magnetic path C is formed, but a magnetic repulsion force acts between the superconducting member 1 and the fixed member 2 due to the Meissner effect, which is a special effect of the superconducting member 10. Due to the repulsive force, the superconducting member 1 has a gap of a predetermined floating height d from the fixed member 2,
It can function as a non-contact thrust bearing.
ここで、コイル３に所定の電流を流したときの浮上量ｄ
と反発力である負荷容量Ｆとの間には、第５図に示すよ
うに浮上量ｄが増大するにつれ、負荷容量Ｆは低下する
特性があり、また、浮上量ｄと軸受剛性にとの間には第
６図に示すようにたとえば所定の浮上量ｄｏで最大の軸
受剛性Ｋｏとなるような性質がある。たとえば、木香
亘、岡野 真「超電導反発形磁気軸受」、日本機械学会
論文１）（Ｃｍ＞ ５２１）４８１号（昭６１−９）２
５４０〜２５４６ページ。Here, the flying height d when a predetermined current is passed through the coil 3
As shown in Fig. 5, as the flying height d increases, the load capacity F decreases, and there is also a relationship between the flying height d and the bearing rigidity. As shown in FIG. 6, there is a property in between that, for example, the bearing stiffness Ko is maximum at a predetermined flying height do. For example, Kika
Wataru, Makoto Okano "Superconducting repulsion type magnetic bearing", Japan Society of Mechanical Engineers paper 1) (Cm> 521) No. 481 (Sho 61-9) 2
Pages 540-2546.
発明が解決しようとする問題点
しかしながら、上記のような構成においては、コイル３
に所定の電流を流したときの浮上ｉ１ｄは、図４に示す
ように負荷容量Ｆと回転部ｌＯの自重が釣り合うところ
で一義的に決定されるため、最良の軸受剛性を任意に選
択することはできなかった。たとえば、回転部ｌＯの自
重が軽すぎたり、重すぎたりすると、第４図および第５
図かられかるように、軸受剛性には共に小さくなり、こ
の状態で回転軸４のスラスト軸方向に外乱ｆｓが加わる
と、回転部ｌＯはスラスト方向に大きく変動するという
問題点があった。また、回転軸４のラジアル方向への規
制は固体接触のため、摩擦による負荷が発生するという
問題点があった。Problems to be Solved by the Invention However, in the above configuration, the coil 3
The levitation i1d when a predetermined current is applied to is uniquely determined at the point where the load capacity F and the weight of the rotating part lO are balanced, as shown in Fig. 4, so it is not possible to arbitrarily select the best bearing rigidity. could not. For example, if the weight of the rotating part 1O is too light or too heavy, the
As can be seen from the figure, there is a problem in that the bearing rigidity is both small, and if a disturbance fs is applied in the thrust axis direction of the rotating shaft 4 in this state, the rotating part 10 will fluctuate greatly in the thrust direction. Further, since the rotation shaft 4 is restricted in the radial direction by solid contact, there is a problem in that a load due to friction is generated.
問題点を解決するための手段
上記問題点を解決するために本発明の磁気軸受は、回転
軸と、前記回転軸に同心状に固定された円筒あるいは円
柱状の超電導部材と、磁性材料よりなり、断面形状がコ
の字型で空隙部を有する軸対称構造の固定部材と、前記
固定部材の空隙部の相対向する両端面間に磁路が短絡す
るようにした磁気回路手段と、前記超電導部材は、前記
固定部材の空隙部に位置し、かつ、前記超電導部材の両
端面および外周面と固定部材間には、所定の隙間を備え
たものである。Means for Solving the Problems In order to solve the above problems, the magnetic bearing of the present invention comprises a rotating shaft, a cylindrical or cylindrical superconducting member concentrically fixed to the rotating shaft, and a magnetic material. , a fixing member having an axially symmetrical structure having a U-shaped cross section and a gap, a magnetic circuit means in which a magnetic path is short-circuited between opposite end faces of the gap of the fixing member, and the superconductor. The member is located in the gap of the fixing member, and a predetermined gap is provided between both end surfaces and the outer peripheral surface of the superconducting member and the fixing member.
作用
本発明は上記した構成によって、超電導部材の両端面の
双方および外周面の全周にそれぞれ相対向して負荷容量
を与えることにより、任意で最良の軸受剛性を超電導部
材に与えることができる。Effect of the Invention With the above-described configuration, the present invention can provide the superconducting member with optionally the best bearing rigidity by providing opposing load capacities to both end faces and the entire circumference of the outer peripheral surface of the superconducting member.
実施例
以下本発明の一実施例の磁気軸受について、図面を参照
しながら説明する。EXAMPLE Hereinafter, a magnetic bearing according to an example of the present invention will be described with reference to the drawings.
第１図は本発明の第１の実施例の磁気軸受の半断面図を
示している。FIG. 1 shows a half-sectional view of a magnetic bearing according to a first embodiment of the present invention.
回転軸４には、この軸と同心状に円柱状の超電導部材ｌ
が固定されており、回転部ｌＯを形成している。固定部
材２は超電導部材１の両端面と所定の空隙をもって対向
関係にある。また、超電導部材１の外周面と対向関係に
ある固定部材２の面上には、回転軸４に対して同心状に
導電性かあるいは超電導性材料よりなるコイル３が配設
されており、コイル３の内周面は超電導部材１の外周面
と所定の空隙をもうて対向している。The rotating shaft 4 has a cylindrical superconducting member l concentrically with this shaft.
is fixed, forming a rotating part IO. The fixing member 2 is opposed to both end surfaces of the superconducting member 1 with a predetermined gap therebetween. Further, a coil 3 made of a conductive or superconducting material is disposed concentrically with respect to the rotating shaft 4 on the surface of the fixed member 2 that faces the outer peripheral surface of the superconducting member 1. The inner circumferential surface of superconducting member 3 faces the outer circumferential surface of superconducting member 1 with a predetermined gap therebetween.
さて、本実施例においては、コイル３に所定の電流を流
すと、磁路Ｃが形成され、超電導部材１の両端面および
外周面では、マイスナー効果によって、負荷容量Ｆが両
端面では双方向、外周面では全周方向に相対向して働く
こととなる。ここで、たとえば、超電導部材ｌの両端面
と固定部材間の空隙をそれぞれほぼ最大の軸受剛性とな
る距離ｄ２、ｄ３となるようにすれば、スラスト方向へ
の外乱ｆ３が加わったときの回転部１０のスラスト方向
への変動を小さくできる。このことは、うシアル方向へ
の外乱ｆｒが加わる場合においても、同様の関係が成立
することとなり、外乱に対して位置変動を小さくするこ
とができる。また、云うまでもなく、超電導部材１と固
定部材２はスラストおよびラジアルの方向について、非
接触の軸受となっている。Now, in this embodiment, when a predetermined current is passed through the coil 3, a magnetic path C is formed, and the load capacity F is bidirectional at both end surfaces and the outer peripheral surface of the superconducting member 1 due to the Meissner effect. On the outer peripheral surface, they work oppositely in the entire circumferential direction. Here, for example, if the gaps between both end faces of the superconducting member l and the fixed member are set to distances d2 and d3, respectively, which provide approximately maximum bearing rigidity, the rotating part when the disturbance f3 in the thrust direction is applied. 10 in the thrust direction can be reduced. This means that even when a disturbance fr in the radial direction is applied, a similar relationship holds true, and the positional fluctuation can be reduced with respect to the disturbance. Needless to say, the superconducting member 1 and the fixing member 2 are non-contact bearings in the thrust and radial directions.
第２図は本発明の第２の実施例の磁気軸受の半断面図を
示している。FIG. 2 shows a half-sectional view of a magnetic bearing according to a second embodiment of the invention.
回転軸４には、この軸と同心状に円柱状の超電導部材１
が固定されており、回転部１０を形成している。固定部
材２は超電導部材１の両端面および外周面と所定の空隙
をもって対向関係にある。The rotating shaft 4 has a cylindrical superconducting member 1 concentrically therewith.
is fixed and forms the rotating part 10. The fixing member 2 is opposed to both end surfaces and the outer peripheral surface of the superconducting member 1 with a predetermined gap therebetween.
また、超電導部材１の両端面と対向関係にある固定部材
２のそれぞれの面上の一部には、回転軸４に対して同心
状に導電性かあるいは超電導性材料よりなるコイル３ａ
、３ｂが配設されている。Further, on a part of each surface of the fixed member 2 facing both end surfaces of the superconducting member 1, a coil 3a made of a conductive or superconducting material is provided concentrically with respect to the rotating shaft 4.
, 3b are arranged.
さて、本実施例においても、２つのコイル３ａ。Now, also in this embodiment, there are two coils 3a.
３ｂに同方向に所定の電流を流すと、磁路Ｃが形成され
、超電導部材１の両端面および外周面では、マイスナー
効果によって、負荷容量Ｆが両端面では双方向、外周面
では全周方向に相対向して働くこととなり、第１の実施
例で示したことと同様の機能を有することとなる。When a predetermined current is passed in the same direction through 3b, a magnetic path C is formed, and due to the Meissner effect, the load capacity F increases in both directions on both end surfaces and on the outer peripheral surface, and in the entire circumferential direction on the outer peripheral surface. The second embodiment works in opposition to the second embodiment, and has the same function as that shown in the first embodiment.
第３図は本発明の第３の実施例の磁気軸受の半断面図を
示している。FIG. 3 shows a half-sectional view of a magnetic bearing according to a third embodiment of the present invention.
回転軸４には、この軸と同心状に円筒状の超電導部材ｌ
が固定されており、回転部ｌＯを形成している。固定部
材２は回転軸４の軸方向に＠磁された円筒状の永久磁石
５と、永久磁石５の両端面にそれぞれ接するよう設けら
れ、永久磁石５と同心状の円筒状よりなる継鉄１２から
なっている。The rotating shaft 4 has a cylindrical superconducting member l concentrically with this shaft.
is fixed, forming a rotating part IO. The fixed member 2 includes a cylindrical permanent magnet 5 magnetized in the axial direction of the rotating shaft 4, and a cylindrical yoke 12 that is provided in contact with both end surfaces of the permanent magnet 5 and is concentric with the permanent magnet 5. It consists of
また、超電導部材１の両端面は継鉄１２のそれぞれの端
面と、また、超電導部材１の外周面は永久磁石５の内周
面と所定の空隙を有して対向している。Further, both end faces of the superconducting member 1 face the respective end faces of the yoke 12, and the outer circumferential face of the superconducting member 1 faces the inner circumferential face of the permanent magnet 5 with a predetermined gap therebetween.
さて、本実施例においても、永久磁石５により磁路Ｃが
形成され、超電導部材１の両端面および外周面では、マ
イスナー効果によって、負荷容量Ｆが両端面では双方向
、外周面では全周方向に対向して働くこととなり、第１
の実施例で示したことと同様の機能を有することがわか
る。Now, also in this embodiment, a magnetic path C is formed by the permanent magnet 5, and the load capacity F is bidirectional on both end surfaces and in the entire circumferential direction on the outer peripheral surface due to the Meissner effect on both end surfaces and the outer peripheral surface of the superconducting member 1. I was assigned to work opposite the
It can be seen that this embodiment has the same function as that shown in the embodiment.
なお、上記実施例中の超電導部材は、たとえば、いわゆ
る常温超電導体を用いるか、または、超電導臨界温度が
室温と液体窒素の沸点の間の材料を用いて液体窒素で冷
却するか（図示せず）、もしくは超電導臨界温度が液体
窒素の沸点以下の材料を用いて液体ヘリウムで冷却する
かく図示せず）をすればよい、常温超電導体の一例とて
しは、組成としてストロンチウム（Ｓｒ）、バリウム（
Ｂａ）、イツトリウム（Ｙ）および！Ｒ（Ｃｕ）を夫々
１：１：１：３の比率で含有するセラミック酸化物があ
る。その製造方法の一例としては、出発材料として５ｒ
ＣＯＢａ００３％ Ｙ２０． 、ＣｕＯの夫夫の粉体を
所定量混合し、粉砕し、空気中において９２０℃で５時
間焼成する。この焼成・粉砕を３回繰り返し、均質性を
高める。このようにして処理した混合粉体を冷間圧縮成
型した後、空気中において１０００℃で５時間焼成し、
徐冷することにより製造する。The superconducting member in the above embodiments may be, for example, a so-called room-temperature superconductor, or a material whose superconducting critical temperature is between room temperature and the boiling point of liquid nitrogen and cooled with liquid nitrogen (not shown). ), or cooling with liquid helium using a material whose superconducting critical temperature is below the boiling point of liquid nitrogen (not shown).An example of a room-temperature superconductor is a composition of strontium (Sr) and barium. (
Ba), yttrium (Y) and! There are ceramic oxides containing R(Cu) in a ratio of 1:1:1:3, respectively. An example of its manufacturing method is to use 5r as the starting material.
COBa003% Y20. A predetermined amount of CuO powder was mixed, pulverized, and fired in air at 920° C. for 5 hours. This firing and crushing process is repeated three times to improve homogeneity. After cold compression molding the mixed powder treated in this way, it was calcined in air at 1000°C for 5 hours,
Manufactured by slow cooling.
発明の効果
以上のように本発明は、回転軸と、前記回転軸に同心状
に固定された円筒あるいは円柱状の超電導部材と、磁性
材料よりなり、断面形状がコの字型で空隙部を有する軸
対称構造の固定部材と、前記固定部材の空隙部の相対向
する両端面間に磁路が短絡するようにした磁気回路手段
と、前記超電導部材は、前記固定部材の空隙部に位置し
、かつ、前記超電導部材の両端面および外周面と固定部
材間には、所定の隙間を設けることによって、超電導部
材の両端面および外周面で発生するマイスナー効果によ
る磁気反発力を双方向あるいは全周方向より相対向して
加えることによって、任意の軸受剛性Ｋを超電導部材と
固定部材間、および超電導部材と磁束を発生する手段と
なるコイルや永久磁石間の空隙距離によって与えること
ができるため、外乱に対して位置変動が少なく、また、
非接触の磁気軸受を提供できる。Effects of the Invention As described above, the present invention consists of a rotating shaft, a cylindrical or cylindrical superconducting member fixed concentrically to the rotating shaft, and a magnetic material, and has a U-shaped cross-section and a cavity. a fixing member having an axially symmetrical structure, a magnetic circuit means in which a magnetic path is short-circuited between opposing end surfaces of a gap in the fixing member, and the superconducting member located in the gap in the fixing member. , and by providing a predetermined gap between both end surfaces and the outer circumferential surface of the superconducting member and the fixed member, magnetic repulsion due to the Meissner effect generated at both end surfaces and the outer circumferential surface of the superconducting member can be suppressed in both directions or around the entire circumference. By applying the bearings in opposite directions, an arbitrary bearing stiffness K can be given by the air gap distance between the superconducting member and the fixed member, and between the superconducting member and the coil or permanent magnet that is the means for generating magnetic flux. There is little variation in position relative to
Can provide non-contact magnetic bearings.
第１図は本発明の第１の実施例の磁気軸受の半断面図、
第２図は本発明の第２の実施例の磁気軸受の半断面図、
第３図は本発明の第３の実施例の磁気軸受の半断面図、
第４図は従来の磁気軸受の半断面図、第５図は浮上量と
負荷容量との関係図、第６図は浮上量と軸受剛性との関
係図である。
１・・・・・・超電風部材、２・・・・・・固定部材、
３・・・・・・コイル、４・・・・・・回転軸、５・・
・・・・永久磁石、６・・・・・・ラジアル軸受、１０
・・・・・・回転部、１２・・・・・・継鉄。
代理人の氏名 弁理士 中尾敏男 ほか１名２− 固定
部材
第２図
第３図
第４図 ／−趙＃７：＃Ｆ舒Ｈ
２−固定舒巷
３−一一ゴ４ル
ｆｓ４−＠転軸
第５図
第６図
ｄ。
存り重ｄFIG. 1 is a half-sectional view of a magnetic bearing according to a first embodiment of the present invention;
FIG. 2 is a half-sectional view of a magnetic bearing according to a second embodiment of the present invention;
FIG. 3 is a half-sectional view of a magnetic bearing according to a third embodiment of the present invention;
FIG. 4 is a half-sectional view of a conventional magnetic bearing, FIG. 5 is a diagram showing the relationship between the flying height and load capacity, and FIG. 6 is a diagram showing the relationship between the flying height and bearing rigidity. 1...Super electric wind member, 2...Fixing member,
3... Coil, 4... Rotating shaft, 5...
... Permanent magnet, 6 ... Radial bearing, 10
...Rotating part, 12...Yoke. Name of agent Patent attorney Toshio Nakao and 1 other person 2- Fixed members Figure 2 Figure 3 Figure 4 /- Zhao #7: #F Shu H 2- Fixed Shu Lane 3-11 Go 4 Le fs4-@Ten Axis Fig. 5 Fig. 6 d. I'm grateful
Claims (4)
あるいは円柱状の超電導部材と、磁性材料よりなり、断
面形状がコの字型で空隙部を有する軸対称構造の固定部
材と、前記固定部材の空隙部の相対向する両端面間に磁
路が短絡するようにした磁気回路手段と、前記超電導部
材は、前記固定部材の空隙部に位置し、かつ、前記超電
導部材の両端面および外周面と固定部材間には、所定の
隙間を備えたことを特徴とする磁気軸受。(1) A rotating shaft, a cylindrical or cylindrical superconducting member concentrically fixed to the rotating shaft, and a fixing member made of a magnetic material and having an axially symmetrical structure with a U-shaped cross section and a gap. , a magnetic circuit means configured to short-circuit a magnetic path between opposing end surfaces of the gap portion of the fixing member; and the superconducting member is located in the gap portion of the fixing member, and the superconducting member is located at both ends of the superconducting member. A magnetic bearing characterized in that a predetermined gap is provided between a surface, an outer peripheral surface, and a fixing member.
固定部材の内周面間に同心状に固定して配設された導電
性かあるいは超電導性材料よりなるコイルであることを
特徴とする特許請求の範囲第（１）項記載の磁気軸受。(2) The magnetic circuit means is a coil made of conductive or superconducting material fixed concentrically between the outer peripheral surface of the superconducting member and the inner peripheral surface of the opposing fixed member. A magnetic bearing according to claim (1).
固定部材の両端面にそれぞれ同心状に配設された導電性
かあるいは超電導性材料よりなるコイルであることを特
徴とする特許請求の範囲第（１）項記載の磁気軸受。(3) The magnetic circuit means is a coil made of conductive material or a superconducting material, which is arranged concentrically on both end surfaces of the fixed member opposite to both end surfaces of the superconducting member. A magnetic bearing as described in scope (1).
久磁石と、前記永久磁石の両端面にそれぞれ接するよう
設けられた円筒状の継鉄からなり、前記永久磁石を磁気
回路手段としたことを特徴とする特許請求の範囲第（１
）項記載の磁気軸受。(4) The fixed member consists of a cylindrical permanent magnet magnetized in the direction of the rotation axis, and a cylindrical yoke provided in contact with both end surfaces of the permanent magnet, and the permanent magnet is connected to the magnetic circuit means. Claim No. 1 (1) characterized in that
Magnetic bearings listed in ).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29653187A JPH01141224A (en) | 1987-11-25 | 1987-11-25 | Magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29653187A JPH01141224A (en) | 1987-11-25 | 1987-11-25 | Magnetic bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01141224A true JPH01141224A (en) | 1989-06-02 |
Family
ID=17834734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29653187A Pending JPH01141224A (en) | 1987-11-25 | 1987-11-25 | Magnetic bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01141224A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009152803A1 (en) * | 2008-06-18 | 2009-12-23 | Schaeffler Kg | Magnetic bearing with high-temperature superconductor elements |
| CN108087425A (en) * | 2018-01-20 | 2018-05-29 | 营口万意达智能装备科技有限公司 | A kind of servomotor magnetic thrust bearing |
-
1987
- 1987-11-25 JP JP29653187A patent/JPH01141224A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009152803A1 (en) * | 2008-06-18 | 2009-12-23 | Schaeffler Kg | Magnetic bearing with high-temperature superconductor elements |
| US8618707B2 (en) | 2008-06-18 | 2013-12-31 | Schaeffler Technologies AG & Co. KG | Magnetic bearing with high-temperature superconductor elements |
| CN108087425A (en) * | 2018-01-20 | 2018-05-29 | 营口万意达智能装备科技有限公司 | A kind of servomotor magnetic thrust bearing |
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