JPH0198709A - Magnetic bearing - Google Patents

Magnetic bearing

Info

Publication number
JPH0198709A
JPH0198709A JP25171987A JP25171987A JPH0198709A JP H0198709 A JPH0198709 A JP H0198709A JP 25171987 A JP25171987 A JP 25171987A JP 25171987 A JP25171987 A JP 25171987A JP H0198709 A JPH0198709 A JP H0198709A
Authority
JP
Japan
Prior art keywords
bearing
inner race
conductive material
super conductive
magnetic bearing
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
Application number
JP25171987A
Other languages
Japanese (ja)
Other versions
JP2614728B2 (en
Inventor
Ryoichi Takahata
良一 高畑
Toshiaki Hyodo
兵頭　賢昭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koyo Seiko Co Ltd
Original Assignee
Koyo Seiko Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Koyo Seiko Co Ltd filed Critical Koyo Seiko Co Ltd
Priority to JP62251719A priority Critical patent/JP2614728B2/en
Publication of JPH0198709A publication Critical patent/JPH0198709A/en
Application granted granted Critical
Publication of JP2614728B2 publication Critical patent/JP2614728B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F16C32/0436—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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

PURPOSE:To obtain a bearing required for bearing a small load in low speed running and a stabiled with a simple structure by manufacturing either one of its inner race and outer race with a super conductive material and the other one with a permanent magnet selectively. CONSTITUTION:An inner race 2 fitted around a rotary shaft 1 is formed in a cylindrical shape or a spherical shape and an outer race 4 fitted in a housing 3 facing it, is manufactured in a form matching with the inner race 2 through a minute gap (d). Either one of the inner race 2 and the outer race 4 is manufactured with a super conductive material and the other one with a permanent magnet selectively. In this magnetic bearing using the super conductive material, the inner race 2 is rotated so as to support the rotary shaft 1 maintaining the prescribed minute gap (d) stably against the outer race 4 by the Meisner effect of the super conductive material. This magnetic bearing can obtain high bearing accuracy without requiring any complicated control due to its simple structure, to say nothing of high efficiency due to no frictional resistance.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、磁気軸受に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to magnetic bearings.

〔従来の技術・発明が解決しようとする問題点〕従来の
技術における滑り軸受や転り軸受は、摩擦が大きく、そ
のため寿命に限界があり、潤滑油も必要であり、清浄環
境使用に適さない。又、それを補なうため磁気軸受が使
用されるが、永久磁石間では磁界が不安定である上、制
御が複雑である欠点がある。[Problems to be solved by conventional technology/invention] Slide bearings and rolling bearings in conventional technology have large friction, therefore have a limited lifespan, and require lubricating oil, making them unsuitable for use in clean environments. . In addition, magnetic bearings are used to compensate for this, but they have the disadvantage that the magnetic field between the permanent magnets is unstable and the control is complicated.

そこで、低速運転において負荷が小さい簡単な構造で、
安定した軸受が求められている。Therefore, with a simple structure that requires less load during low-speed operation,
Stable bearings are required.

〔問題点を解決するための手段〕[Means for solving problems]

この発明による超電導材利用の磁気軸受は、内輪２と外
輪４とが選択的に一方が超電導材で、他方が永久磁石で
製られている。In the magnetic bearing using a superconducting material according to the present invention, one of the inner ring 2 and the outer ring 4 is selectively made of a superconducting material and the other is made of a permanent magnet.

〔作　　用〕[For production]

この超電導材利用の磁気軸受は、超電導材のマイスナー
効果により、内輪２と外輪４との間で、所定の間隙が安
定して維持されたまま相対回転が行なわれる。In this magnetic bearing using a superconducting material, relative rotation is performed between the inner ring 2 and the outer ring 4 while a predetermined gap is stably maintained due to the Meissner effect of the superconducting material.

〔実　施　例〕〔Example〕

この発明の実施例を図面に従って説明する。 Embodiments of the invention will be described with reference to the drawings.

第１図は、この発明をラジアル軸受に適用した例を、第
２図は、この発明をラジアル・スラスト軸受に適用した
例を夫々示す。FIG. 1 shows an example in which the invention is applied to a radial bearing, and FIG. 2 shows an example in which the invention is applied to a radial thrust bearing.

回転軸１に嵌着された内輪２は、ラジアル軸受では円筒
形を成し、ラジアル・スラスト軸受では球面形を成し、
それらに対向してハウジング３に嵌着された外輪４は、
夫々、微小間隙ｄを介して内輪２に対応した形状をなし
ている。The inner ring 2 fitted to the rotating shaft 1 has a cylindrical shape in a radial bearing, and a spherical shape in a radial thrust bearing.
The outer ring 4 fitted into the housing 3 facing them is
Each has a shape corresponding to the inner ring 2 with a minute gap d in between.

内輪２と外輪４とは５選択的に一方が超電導材で、他方
が永久磁石で製られている。The inner ring 2 and the outer ring 4 are optionally made of a superconducting material on one side and a permanent magnet on the other.

超電導材としては１例えば、　Ｂ　ａ　ＣＯｓ　、　Ｙ
２Ｏ３、ＣｕＯの各粉末にアルコールを加えて混合した
後。Examples of superconducting materials include B a COs, Y
After adding alcohol to each powder of 2O3 and CuO and mixing.

焼結して製られるＹ　Ｂａ１Ｃｕ３０ｑ−χを用いる９
超電導材料の内輪２、又は外輪４を嵌着した方の回転軸
ｌ、又はハウジング３は、超電導材料によっては、効率
し、必要に応じて冷却するようにしてもよい。Using YBa1Cu30q-χ produced by sintering 9
Depending on the superconducting material, the rotating shaft 1 or the housing 3 on which the inner ring 2 or outer ring 4 made of superconducting material is fitted may be efficiently cooled as necessary.

この超電導材利用の磁気軸受においては、超電導材のマ
イスナー効果により内輪２は、外輪４に対し所定の微小
間隙ｄが安定して維持されたまま回転し２回転軸ｌを支
承する。In this magnetic bearing using a superconducting material, due to the Meissner effect of the superconducting material, the inner ring 2 rotates while a predetermined minute gap d is stably maintained with respect to the outer ring 4, and supports the two rotational shafts l.

〔発明の効果〕〔Effect of the invention〕

この発明による超電導材利用の磁気軸受は、潤滑油が不
要であり、汚れがないため、清浄環境においても利用で
きることや、摩擦抵抗がないため効率がよいことは、勿
論のこと、磁気軸受としても、簡単な構造で複離な制御
を要しないで、安定した磁界が得られ、延いては高い軸
受精度が得られる。The magnetic bearing using superconducting material according to the present invention does not require lubricating oil and is free from dirt, so it can be used even in clean environments, and it is highly efficient because there is no frictional resistance. With a simple structure, a stable magnetic field can be obtained without requiring complex control, and high bearing precision can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、この発明による超電導材利用のラジアル磁気
軸受の断面正面図、 第２図は、この発明による超電導材利用のラジアル・ス
ラスト磁気軸受の断面正面図である。 １：回転軸　　　　　　２：内輪 ３：ハウジング　　　４：外輪FIG. 1 is a cross-sectional front view of a radial magnetic bearing using a superconducting material according to the present invention, and FIG. 2 is a cross-sectional front view of a radial thrust magnetic bearing using a superconducting material according to the present invention. 1: Rotating shaft 2: Inner ring 3: Housing 4: Outer ring

Claims (1)

【特許請求の範囲】[Claims] 内輪と外輪とが選択的に一方が超電導材で、他方が永久
磁石で製られている磁気軸受A magnetic bearing in which the inner and outer rings are selectively made of superconducting material on one side and permanent magnet on the other.
JP62251719A 1987-10-07 1987-10-07 Radial thrust magnetic bearing Expired - Lifetime JP2614728B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62251719A JP2614728B2 (en) 1987-10-07 1987-10-07 Radial thrust magnetic bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62251719A JP2614728B2 (en) 1987-10-07 1987-10-07 Radial thrust magnetic bearing

Publications (2)

Publication Number Publication Date
JPH0198709A true JPH0198709A (en) 1989-04-17
JP2614728B2 JP2614728B2 (en) 1997-05-28

Family

ID=17226968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62251719A Expired - Lifetime JP2614728B2 (en) 1987-10-07 1987-10-07 Radial thrust magnetic bearing

Country Status (1)

Country Link
JP (1) JP2614728B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01255717A (en) * 1988-04-04 1989-10-12 Sharp Corp Superconductive bearing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63164619U (en) * 1987-04-17 1988-10-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63164619U (en) * 1987-04-17 1988-10-26

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01255717A (en) * 1988-04-04 1989-10-12 Sharp Corp Superconductive bearing

Also Published As

Publication number Publication date
JP2614728B2 (en) 1997-05-28

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