JPS57186618A - Magnetic bearing device - Google Patents

Magnetic bearing device

Info

Publication number
JPS57186618A
JPS57186618A JP7167781A JP7167781A JPS57186618A JP S57186618 A JPS57186618 A JP S57186618A JP 7167781 A JP7167781 A JP 7167781A JP 7167781 A JP7167781 A JP 7167781A JP S57186618 A JPS57186618 A JP S57186618A
Authority
JP
Japan
Prior art keywords
permanent magnet
bearing
spring force
axially
constant
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
Application number
JP7167781A
Other languages
Japanese (ja)
Inventor
Tomo Komiyama
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7167781A priority Critical patent/JPS57186618A/en
Publication of JPS57186618A publication Critical patent/JPS57186618A/en
Pending 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
    • F16C39/00—Relieving load on bearings
    • F16C39/06—Relieving load on bearings using magnetic means
    • F16C39/063—Permanent magnets
    • 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
    • F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
    • F16C32/0425—Passive magnetic bearings with permanent magnets on both parts repelling each other for radial load mainly

Abstract

PURPOSE:To improve the stability of bearing function by supporting a permanent magnet on the static side in such a manner as to move only axially so that even if a permanent magnet on the rotation side is displaced axially, supporting functions are always shown at a fixed bearing constant. CONSTITUTION:A bearing 12 is rotatably attached to the outer peripheral surface of a second permanent magnet 6 disposed on the static side, and the permanent magnet 6 which is movable axially and immovable radially is hung down from the upper wall of a guide member 11 through a spring 13. When a first permanent magnet 4 on the rotation side is moved in the direction of an arrow Y1 for DELTAY1, the distance between each N-pole of the permanent magnets 4, 6 is shortened to increase a spring force K1, and on the countrary, a spring force K2 between S-poles decreases. The permanent magnet 6 is pushed up in the direction of Y1 by a difference between the spring force K1 and K2 to be stable at a balanced position. Therefore, the relative position between the permanent magnets 4, 6 is always kept constant, so that the bearing constant is fixed from the assembling time to the operation time.
JP7167781A 1981-05-13 1981-05-13 Magnetic bearing device Pending JPS57186618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7167781A JPS57186618A (en) 1981-05-13 1981-05-13 Magnetic bearing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7167781A JPS57186618A (en) 1981-05-13 1981-05-13 Magnetic bearing device

Publications (1)

Publication Number Publication Date
JPS57186618A true JPS57186618A (en) 1982-11-17

Family

ID=13467440

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7167781A Pending JPS57186618A (en) 1981-05-13 1981-05-13 Magnetic bearing device

Country Status (1)

Country Link
JP (1) JPS57186618A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2660112A1 (en) * 1990-03-20 1991-09-27 Gen Electric Cgr Weight compensation device for X-ray tube including passive magnetic bearings
US5521448A (en) * 1994-08-01 1996-05-28 Mechanical Technology Incorporated Damping for passive magnetic bearings
CN108518347A (en) * 2018-06-11 2018-09-11 杭州大路实业有限公司 A kind of integral shaft synchronizes canned motor pump to suspension permanent magnet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2660112A1 (en) * 1990-03-20 1991-09-27 Gen Electric Cgr Weight compensation device for X-ray tube including passive magnetic bearings
US5117448A (en) * 1990-03-20 1992-05-26 General Electric Cgr S.A. Weight compensation device for x-ray tube comprising passive magnetic bearings
US5521448A (en) * 1994-08-01 1996-05-28 Mechanical Technology Incorporated Damping for passive magnetic bearings
CN108518347A (en) * 2018-06-11 2018-09-11 杭州大路实业有限公司 A kind of integral shaft synchronizes canned motor pump to suspension permanent magnet
CN108518347B (en) * 2018-06-11 2024-03-15 杭州大路实业有限公司 Integrated axial suspension permanent magnet synchronous shielding pump

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