GB559134A - Improvements in and relating to magnetic suspensions - Google Patents

Improvements in and relating to magnetic suspensions

Info

Publication number
GB559134A
GB559134A GB16322/42A GB1632242A GB559134A GB 559134 A GB559134 A GB 559134A GB 16322/42 A GB16322/42 A GB 16322/42A GB 1632242 A GB1632242 A GB 1632242A GB 559134 A GB559134 A GB 559134A
Authority
GB
United Kingdom
Prior art keywords
magnet
stationary
pole
magnets
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.)
Expired
Application number
GB16322/42A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB559134A publication Critical patent/GB559134A/en
Expired 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

559,134. Magnetic suspensions. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 18, 1942, No. 16322. Convention date, Nov. 19, 1941. [Class 37] A magnetic suspension for a vertical shaft comprises two relatively movable-permanent magnet systems, one system comprising a single permanent magnet and the other comprising two permanent magnets axially spaced apart, all the magnets being cylindrical and coaxial. A stationary hollow cylindrical permanent magnet 10, Fig. 1, is mounted with its axis vertical on a non- magnetic support 11, the magnetic axis of the magnet being vertical. A vertical rotary shaft 13 has end portions 14, 15 forming guide bearings with stationary pins 16, 17, which may be resilient. Mounted on the shaft 13 is a pair of cylindrical permanent magnets 19, 20 each having a length approximately one-half of the length of the magnet 10. The lower rotary magnet 19 is magnetized oppositely to the stationary magnet 10 so that its lower end attracts and its upper end repels the lower pole of the magnet 10. The upper rotary magnet 20 is magnetized similarly to the stationary magnet 10, so that its lower pole attracts and its upper pole repels the upper pole of the magnet 10. The distance between the bottom ends of the magnets 19, 20 corresponds to the length of the magnets 10. All the magnetic forces are in a direction to lift or support the weight of the rotary assembly. In a modification Fig. 3, a highly permeable frame 12 extends from the lower end of the stationary permanent magnet 10 to a point above the upper rotary magnet 20, so that some of the flux from the lower south pole of the magnet 10 is brought to the upper part of the frame and attracts the upper north pole of the rotary magnet 20. A highly permeable shaft section 13a is employed between the upper north pole of the magnet 20 and the upper south pole of the magnet 19 and is undercut adjacent to the south pole of the magnet 20 so that this is not magnetically shortcircuited. This arrangement creates a magnetic circuit which is closed except at the working gaps. In another modification the stationary system comprises two cylindrical magnets spaced apart and surrounding a single cylindrical magnet carried by the rotating shaft In other arrangements the inner system is stationary and the outer system rotatable. Specification 550,788 is referred to.
GB16322/42A 1941-11-19 1942-11-18 Improvements in and relating to magnetic suspensions Expired GB559134A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US559134XA 1941-11-19 1941-11-19

Publications (1)

Publication Number Publication Date
GB559134A true GB559134A (en) 1944-02-04

Family

ID=22000972

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16322/42A Expired GB559134A (en) 1941-11-19 1942-11-18 Improvements in and relating to magnetic suspensions

Country Status (1)

Country Link
GB (1) GB559134A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020741B (en) * 1953-01-24 1957-12-12 Deutsche Edelstahlwerke Ag Permanent magnetic holding device
DE1173266B (en) * 1960-01-08 1964-07-02 Textron Electronics Inc Vibration measuring device
US5392497A (en) * 1990-05-16 1995-02-28 Defner; Jesus E. G. Magnetic clasp
US20130034406A1 (en) * 2011-08-04 2013-02-07 Jing-Tang Wu Vibration-isolating screw

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020741B (en) * 1953-01-24 1957-12-12 Deutsche Edelstahlwerke Ag Permanent magnetic holding device
DE1173266B (en) * 1960-01-08 1964-07-02 Textron Electronics Inc Vibration measuring device
US5392497A (en) * 1990-05-16 1995-02-28 Defner; Jesus E. G. Magnetic clasp
US20130034406A1 (en) * 2011-08-04 2013-02-07 Jing-Tang Wu Vibration-isolating screw
US9022711B2 (en) * 2011-08-04 2015-05-05 Wistron Corporation Vibration-isolating screw

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