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EP0090746B1 - Appareil magnétique, notamment pour la manutention - Google Patents

Appareil magnétique, notamment pour la manutention Download PDF

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Publication number
EP0090746B1
EP0090746B1 EP83420038A EP83420038A EP0090746B1 EP 0090746 B1 EP0090746 B1 EP 0090746B1 EP 83420038 A EP83420038 A EP 83420038A EP 83420038 A EP83420038 A EP 83420038A EP 0090746 B1 EP0090746 B1 EP 0090746B1
Authority
EP
European Patent Office
Prior art keywords
stator
rotor
magnetic
carrier
magnets
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
EP83420038A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0090746A1 (fr
Inventor
Philibert Maurice Braillon
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.)
Braillon et Cie SA
Original Assignee
Braillon et Cie SA
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 Braillon et Cie SA filed Critical Braillon et Cie SA
Priority to AT83420038T priority Critical patent/ATE20660T1/de
Publication of EP0090746A1 publication Critical patent/EP0090746A1/fr
Application granted granted Critical
Publication of EP0090746B1 publication Critical patent/EP0090746B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0231—Magnetic circuits with PM for power or force generation
    • H01F7/0252—PM holding devices
    • H01F7/0257—Lifting, pick-up magnetic objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/04—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by magnetic means

Definitions

  • the subject of the invention is a magnetic device, the applications of which can be multiple, but the arrangement and characteristics of which make it more particularly intended for handling loads.
  • Magnetic carriers have two essential components: a stator and a rotor; and considering a carrier such as that illustrated diagrammatically by FIGS. 1 and 2 of the appended drawing, that is to say a plate equipped with permanent magnets with great coercive force, for example ferrite magnets, the stator (1 ) and the rotor (2) have equal magnetic masses so that by rotating the rotor 180 ° it is possible either to cancel the effects of a magnetic field created by the magnetic mass of the stator by putting it in series and in the same sense as another field created by the equivalent magnetic mass of the rotor, is to add the effects of the two fields.
  • M is the magnetic mass on the one hand of the stator and on the other hand of the rotor
  • the operation of the carrier can be schematized as follows:
  • FIG. 1 These two positions are represented the first by FIG. 1 and the second by FIG. 2, in which (A1) and (A2) denote the magnets of the stator and of the rotor respectively and in which the lines of force of the magnetic field are visible.
  • the invention aims to simplify the manufacture of this type of magnetic device. It relates to such an apparatus, the rotor of which has a magnetic mass greater than that of the stator and is positioned in the stator with a clearance allowing the formation of an air gap compensating for the imbalance between the magnetic masses of the stator and of the rotor.
  • M denotes the magnetic mass of the stator
  • MI denotes the magnetic mass of the rotor
  • P denotes the losses resulting from the air gap created by mounting the rotor with clearance in the stator and if P is equal to the difference between MI and M
  • FIG. 3 The principle serving as a basis for the arrangement and operation of this magnetic carrier is illustrated in FIG. 3.
  • the stator and the rotor of the carrier are designated respectively by (1) and by (2).
  • the stator (1) consists of a cage comprising two pole pieces (3), two magnets (4) and a pole closure plate (5).
  • the rotor (2) consists of a magnet (6) and two pole pieces (7); it is movable in rotation about an axis perpendicular to the plane of the figure.
  • the correct functioning of the magnetic carrier therefore only requires determining the magnetic masses of the magnets of the stator and of the rotor as a function of the air gap resulting from the clearance voluntarily left between them; and thanks to this game it is possible to manufacture the carrier without requiring expensive machining of its stator and its rotor.
  • Figures 4 and 5 show an embodiment of such a magnetic carrier. It comprises a cage delimited by two lateral ferromagnetic plates (8), by two non-magnetic flanges (9), by a non-magnetic base (10) and by three ferromagnetic plates (12) of which the two lower ones are isolated from one another and between which two are positioned rows of three magnets (13).
  • a ring (14) is attached to this cage for suspending the carrier from a lifting member, and a handle (15) for moving it when it is suspended.
  • This cage constitutes the stator inside which is housed the rotor which can occupy two positions corresponding respectively to the stop and the walk.
  • This rotor which revolves in the flanges (9) of the stator is constituted by magnets (16) and pole plates (17).
  • a lever (18) allows it to be rotated to move the carrier from the "off to position to the on" position and vice versa; and a finger (19) allows it to be locked in the "on" position.
  • the invention is not limited to the only embodiment of this magnetic carrier which has been described above by way of example, on the contrary it embraces all the variant embodiments within the framework of the claims below, regardless in particular of the type of magnets used and the arrangement of these magnets in the stator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Soft Magnetic Materials (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Jigs For Machine Tools (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
EP83420038A 1982-03-25 1983-03-09 Appareil magnétique, notamment pour la manutention Expired EP0090746B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83420038T ATE20660T1 (de) 1982-03-25 1983-03-09 Magnetische vorrichtung, insbesondere zum umladen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8205681 1982-03-25
FR8205681A FR2523940A1 (fr) 1982-03-25 1982-03-25 Appareil magnetique, notamment pour la manutention

Publications (2)

Publication Number Publication Date
EP0090746A1 EP0090746A1 (fr) 1983-10-05
EP0090746B1 true EP0090746B1 (fr) 1986-07-09

Family

ID=9272662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83420038A Expired EP0090746B1 (fr) 1982-03-25 1983-03-09 Appareil magnétique, notamment pour la manutention

Country Status (7)

Country Link
US (1) US4465993A (ja)
EP (1) EP0090746B1 (ja)
JP (1) JPS58175808A (ja)
AT (1) ATE20660T1 (ja)
DE (1) DE3364406D1 (ja)
ES (1) ES520946A0 (ja)
FR (1) FR2523940A1 (ja)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921292A (en) * 1988-09-23 1990-05-01 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Magnetic attachment mechanism
DE4102102C2 (de) * 1991-01-25 1995-09-07 Leybold Ag Magnetanordnung mit wenigstens zwei Permanentmagneten sowie ihre Verwendung
FR2675299B1 (fr) * 1991-04-10 1994-09-16 Braillon Cie Porteur magnetique a aimants permanents.
FR2706881B1 (ja) * 1993-06-24 1995-07-28 Braillon Magnetique Sa
KR100288245B1 (ko) * 1998-07-24 2001-05-02 정형 자력흡착기의 흡착자력 자동개폐장치
AUPQ446699A0 (en) * 1999-12-06 2000-01-06 Kocijan, Franz Switchable (variable) permanent magnet device
DE20015391U1 (de) * 2000-09-06 2002-01-17 MV Marketing und Vertriebs-GmbH & Co. KG Wieländer + Schill, 78054 Villingen-Schwenningen Halterungsvorrichtung insbesondere zum Fixieren und/oder Lösen von Anbauteilen
ITMI20011394A1 (it) * 2001-06-29 2002-12-29 Claudio Vicentelli Modulo ad ancoraggio mafnetico con sistema di attivazione/disattivazione e regolazione della forza magnetica di ancoraggio e relativi assiem
GB0302001D0 (en) * 2003-01-29 2003-02-26 Neil Holdings Ltd James Magnetic anchoring means
WO2011097761A1 (zh) * 2010-02-12 2011-08-18 索璞磁性科技（上海）有限公司 永磁起重装置
US8183965B2 (en) 2010-04-09 2012-05-22 Creative Engineering Solutions, Inc. Switchable core element-based permanent magnet apparatus
US9242367B2 (en) 2013-04-19 2016-01-26 Milwaukee Electric Tool Corporation Magnetic drill press
US9078510B2 (en) * 2014-09-04 2015-07-14 Yu-Wen LIAO Easily taken and carried holder for boots
CN106586801B (zh) * 2016-11-03 2018-08-14 上海电气电站设备有限公司 一种内定子起吊翻身结构
US11097401B2 (en) * 2017-04-27 2021-08-24 Magswitch Technology Worldwide Pty Ltd. Magnetic coupling device with at least one of a sensor arrangement and a degauss capability
US12023770B2 (en) 2017-04-27 2024-07-02 Magswitch Technology, Inc. Magnetic coupling device with at least one of a sensor arrangement and a degauss capability
US10903030B2 (en) 2017-04-27 2021-01-26 Magswitch Technology Worldwide Pty Ltd. Variable field magnetic couplers and methods for engaging a ferromagnetic workpiece
WO2018227140A1 (en) 2017-06-08 2018-12-13 Magswitch Technology Worldwide Pty Ltd. Electromagnet-switchable permanent magnet device
IT201800006207A1 (it) * 2018-06-11 2019-12-11 Modulo magnetico con superfici di ancoraggio attivabili e disattivabili magneticamente

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184654A (en) * 1962-06-14 1965-05-18 Ahmet K Bey Magnetic holding device
US3452310A (en) * 1966-11-14 1969-06-24 Eriez Mfg Co Turn-off permanent magnet
GB1471025A (en) * 1974-05-10 1977-04-21 Inst Manipulacnich Dopravnich Magnetic apparatus for suspension and handling of ferro magnetic materials
DE2517364A1 (de) * 1975-04-19 1976-10-28 Max Baermann Schaltbare, dauermagnetische haltevorrichtung
NL7604572A (nl) * 1976-04-29 1977-11-01 Walker Hagou Bv Permanent-magnetische hefmagneet.
US4122922A (en) * 1977-08-17 1978-10-31 Max Baermann Infinitely variable wear-free eddy current and/or hysteresis brake, preferably for track-bound vehicles
IT7823323V0 (it) * 1978-11-17 1978-11-17 Cardone Tecnomagnetica Sollevatore magnetico a comando manuale.

Also Published As

Publication number Publication date
FR2523940A1 (fr) 1983-09-30
US4465993A (en) 1984-08-14
ES8401910A1 (es) 1984-01-16
JPS58175808A (ja) 1983-10-15
ATE20660T1 (de) 1986-07-15
DE3364406D1 (en) 1986-08-14
EP0090746A1 (fr) 1983-10-05
FR2523940B1 (ja) 1984-06-29
ES520946A0 (es) 1984-01-16

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