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DE2903362A1 - Electromagnetic air brake for rotary machine - combines flat and plunger armature attraction effects with electromagnet excitation to brake shaft - Google Patents

Electromagnetic air brake for rotary machine - combines flat and plunger armature attraction effects with electromagnet excitation to brake shaft

Info

Publication number
DE2903362A1
DE2903362A1 DE19792903362 DE2903362A DE2903362A1 DE 2903362 A1 DE2903362 A1 DE 2903362A1 DE 19792903362 DE19792903362 DE 19792903362 DE 2903362 A DE2903362 A DE 2903362A DE 2903362 A1 DE2903362 A1 DE 2903362A1
Authority
DE
Germany
Prior art keywords
armature
brake
electromagnet
excitation
rotary machine
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.)
Ceased
Application number
DE19792903362
Other languages
German (de)
Inventor
Klaus Dipl Ing Ropelius
Hartmut Dipl Ing Sagner
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.)
Mannesmann Demag AG
Original Assignee
Mannesmann Demag AG
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 Mannesmann Demag AG filed Critical Mannesmann Demag AG
Priority to DE19792903362 priority Critical patent/DE2903362A1/en
Publication of DE2903362A1 publication Critical patent/DE2903362A1/en
Ceased legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
    • H02K7/1021Magnetically influenced friction brakes
    • H02K7/1023Magnetically influenced friction brakes using electromagnets
    • H02K7/1025Magnetically influenced friction brakes using electromagnets using axial electromagnets with generally annular air gap
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D59/00Self-acting brakes, e.g. coming into operation at a predetermined speed
    • F16D59/02Self-acting brakes, e.g. coming into operation at a predetermined speed spring-loaded and adapted to be released by mechanical, fluid, or electromagnetic means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/02Braking members; Mounting thereof
    • F16D2065/024Braking members; Mounting thereof the braking surface being inclined with respect to the rotor's axis of rotation at an angle other than 90 degrees, e.g. comprising a conical rotor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00Type of actuator operation force
    • F16D2121/18Electric or magnetic
    • F16D2121/20Electric or magnetic using electromagnets
    • F16D2121/22Electric or magnetic using electromagnets for releasing a normally applied brake
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2127/00Auxiliary mechanisms
    • F16D2127/02Release mechanisms
    • F16D2127/04Release mechanisms for manual operation

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

A brake lifting electromagnet for rotary electrical machines has a magnetic iron core (1) with an embedded exciter coil (3) firmly fixed in the motor casing (6). The armature (2) revolves with the motor shaft (4) and is axially displaceable. A spring (5) moves the armature away when the electromagnet is de-energised and applies the friction brake. When the electromagnet is switched ON and pulls the armature up to a stop (7), the vertical faces cause an attraction by the flat armature principle, and the horizontal faces by the plunger armature principle. The result is a balanced force of attraction as a function of the stroke of 10-20 mm with reduced excitation power.

Description

Elektromagnetische Bremslüfteinrichtung für rotierendeElectromagnetic brake release device for rotating

Motoren Beschreibung Die Erfindung betrifft eine elektromagnetische Bremslüfteinrichtung für rotierende Motoren mit Federspeicherbremse, die bei Ausfall der Erregerspannung den Antrieb stillsetzt.Motors Description The invention relates to an electromagnetic Brake release device for rotating motors with spring-loaded brake, which in the event of failure the excitation voltage stops the drive.

Es ist bekannt, für derartige Magnetsyster rotationssymmetrische Flachanker einzusetzen, z. B. nach Ds-AS 2257290. Der Anker ist mit einem Bremsbelag verbanden und wird durch Federkraft gegen eine Bremsfläche gedrückt. Bei Einsccaltung eines Erregerstroms überwindet die Magnetkraft den ~^^e~in luB, was zur Bremslüftung führt. Außer dem Flackak«rp- -z-- gibt es andere Magnetkonstruktionen, z. B. das Tauchar,Z3r:--nzip. Vor- und Nachteile der verschiedenen Ausführungen sind. z. B. aufgezeichnet im Taschenbuch Elektrotechnik, Band 2 Star-strontechnik, Kapitel 3.4 Elektromagnete, Herausgeber E. Philippow, 2. Auflage, VEB Verlag Technik, Berlin.It is known for such Magnetsyster rotationally symmetrical flat armatures to use, e.g. B. according to Ds-AS 2257290. The anchor is connected to a brake lining and is pressed against a braking surface by spring force. When a Excitation current overcomes the magnetic force of the ~ ^^ e ~ in luB, which leads to brake release. Besides the Flackak «rp- -z- there are other magnet constructions, e.g. B. das Tauchar, Z3r: - nzip. Advantages and disadvantages of the different versions are. z. B. recorded in paperback Electrical engineering, Volume 2 Star-strontechnik, Chapter 3.4 Electromagnets, publisher E. Philippow, 2nd edition, VEB Verlag Technik, Berlin.

Bremslüfteinrichtungen müssen den Verschleiß des Bremsbelags berücksichtigen, weil sich durch Änderungen der Luftspalte von Magnet u. Bremse Einflüsse auf das Kräfteverhältnis und das Zeitverhalten ergeben. Nachstelleinrichtungen sind meistens teuer und erfordern Wartung. Größere zulässige Verschleißwege können den Aufwand verringern, wenn dafür geeignete einfache Bremslüfteinrichtungen vorhanden sind. Bei der mechanischen Bremsfeder ist durch entsprechende Länge und Vorspannung auch auf größeren Verschiebewegen eine fast gleichbleibende Bremskraft zu erreichen. Der Zuganker allein hat aber eine über dem Weg sehr stark abfallende Kraftkennlinie. Das führt wieder zu Sondereinrichtungen (z. B. Sparschaltung) oder zu relativ hohen Erregerleistungen. Tauchanker weisen günstigere Kennlinien auf, sind jedoch in Bezug auf die Haltekraft und den konstruktiven Einbau nachteilig.Brake release devices must take the wear of the brake lining into account, because changes in the air gaps in the magnet and brake have an impact on the Balance of power and the time behavior result. Adjustment devices are mostly expensive and require maintenance. Larger permissible wear paths can reduce the effort if suitable simple brake release devices are available. The mechanical brake spring is also due to the appropriate length and preload to achieve an almost constant braking force on larger displacement distances. The tie rod alone, however, has a force curve that drops very sharply along the way. This in turn leads to special facilities (e.g. economy circuit) or to relatively high ones Excitation performance. Immersion anchors have more favorable characteristics, but are related detrimental to the holding force and the structural installation.

Aufgabe der Erfindung ist eine elektromagnetische Bremslüfteinrichtung für lange wrschleißbedingte Verschiebewege (z. B. 10-20 mm), die mit kleiner Erregerleistung und ohne Zusatzeinrichtungen auskommt.The object of the invention is an electromagnetic brake release device for long displacement distances caused by wear (e.g. 10-20 mm), those with low excitation power and works without additional equipment.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß sich die resultierende magnetische Zugkraft des Ankers aus einer Komponente nach dem Flachankerprinzip und einer Komponente nach dem Tauchankerprinzip zusammensetzt, wobei beide Komponenten am inneren und am äußeren Ankerrand auftreten und der rotationssymmetrisch aufgebaute magnetische Kreis ein Durchstecken der Motorwelle gestattet. Die hierdurch erreichbare relativ geringe Erreger leistung mit entsprechend niedrigen Verlusten erlaubt in Ausgestaltung der Erfindung das Betreiben der Einrichtung sowohl mit Gleichspannung als auch mit Wechselspannung.According to the invention the object is achieved in that the resulting Magnetic tensile force of the armature from one component based on the flat armature principle and a component according to the plunger principle, both components occur on the inner and outer anchor edge and the rotationally symmetrical magnetic circuit allows the motor shaft to be pushed through. The one achievable in this way relatively low excitation power with correspondingly low losses allowed in Embodiment of the invention, the operation of the device with both DC voltage as well as with alternating voltage.

Eine solche Lüfteinrichtung für lanze VP,PschleiOwege hat erhebliche günstige Auswirkungen auf die Schalthä'igkeit, die Standzeit, die Wartungsarmut der Bremse und den Preis Hinzu kommen weitere Vorteile aus der geringen Erregerleistung, der Anpassungsmöglichkeit der Zeitkonstanten über die Spannung.sform und der Flexibilität in Bezug auf die verschieden wählbaren Luftspaltanteile.Such a ventilation device for lance VP, PschleiOwege has considerable favorable effects on switching frequency, service life, low maintenance the brake and the price There are also other advantages from the low excitation power, the possibility of adapting the time constants via the voltage form and the flexibility in relation to the different selectable air gap proportions.

Ein Ausführungsbeispiel der Bremslüfteinrichtung ist in Fig. 1 dargestellt.An exemplary embodiment of the brake release device is shown in FIG. 1.

Der eiserne Magnetkern 1 mit darin eingebetteter Erregerspule 3 ist ortsfest im Motorgehäuse 6 angeordnet. Anker 2 rotiert - achsial verschiebbar - mit der Motorwelle 4. Die Bremsfeder 5 drückt den Anker mit nicht gezeichnetem Bremsbelag nach rechts, bis Reibung an einer gedachten Gegenfläche einsetzt. Bei Erregung der Spule wird der Anker nach links bewegt, durch Anschlag 7begrenzt und lüfter die Bremse. Zwischen Anker 2 und Magnetkern 1 befindet sich Uberall ein Luftspalt. Die in der Zeichnung vertikal gegenüberliegenden gemeinsamen Flächen von Magnetkern und Anker bewirken eine Zugkraft nach dem Flachankerprinzip, die mit größer werdendem Luftspalt stark abfällt. Zur Kompensation erzeugen die horizontal gegenüberliegenden Flächen Kräfte nach dem Tauchankerprinzip. Es ist eine Frage des Feinabgleichs mit Hilfsrechnungen über die magnetische Energie die gewünschten resultierenden Zugkraftkennlinien zu erreichen. In jedem Fall kann die durchgesteckte Welle für weitere Antriebsaufgaben verwendet werden.The iron magnetic core 1 with the excitation coil 3 embedded therein is Stationarily arranged in the motor housing 6. Armature 2 rotates - axially displaceable - with the motor shaft 4. The brake spring 5 presses the armature with the brake lining, not shown to the right until friction begins on an imaginary opposing surface. When the Coil, the armature is moved to the left, limited by stop 7 and ventilates the Brake. There is an air gap everywhere between armature 2 and magnetic core 1. the in the drawing, vertically opposite common surfaces of the magnetic core and anchors cause a tensile force according to the flat anchor principle, which increases with increasing Air gap drops sharply. To compensate, generate the horizontally opposite Surface forces based on the plunger anchor principle. It's a matter of fine-tuning with Auxiliary calculations on the magnetic energy, the desired resulting tractive force characteristics to reach. In any case, the inserted shaft can be used for further drive tasks be used.

LeerseiteBlank page

Claims (2)

Elektromagnetische Bremslüfteinrichtung für rotierende Motoren Pat entansprüche 1. Elektromagnetische Bremslüfteinrichtung für rotierende Motoren mit Federspeicherbrense, die bei Ausfall der Erregerspannung den Antrieb stillsetzt, dadurch gekennzeichnet, daß sich die resultierende magnetische Zugkraft des Ankers aus einer Komponente nach deci piachankerprinzlp und einer Komponente nach dem Tauchankerprinzip zusammensetzt, wobei beide Komponenten am inneren und am äußeren Ankerrand auftreten und der rotationssymmetrisch aufgebaute magnetische Kreis ein Durchstecken der Motorwelle gestattet. Electromagnetic brake release device for rotating motors Pat Ent claims 1. Electromagnetic brake release device for rotating motors with Spring-loaded brake that shuts down the drive if the excitation voltage fails, characterized in that the resulting magnetic tensile force of the armature from a component based on the decipple anchor principle and one component based on the plunger anchor principle composed, with both components occurring on the inner and outer anchor edge and the rotationally symmetrical magnetic circuit a pushing through of the motor shaft allowed. 2. Elektromagnetische Bremslüfteinrichtung nach Anspruch 1 dadurch gekennzeichnet, daß der magnetische Kreis sowohl mit Gleichspannungserregung als auch mit Wechselspannungserregung arbeitet. 2. Electromagnetic brake release device according to claim 1, characterized characterized in that the magnetic circuit with both DC excitation as also works with AC excitation.
DE19792903362 1979-01-29 1979-01-29 Electromagnetic air brake for rotary machine - combines flat and plunger armature attraction effects with electromagnet excitation to brake shaft Ceased DE2903362A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792903362 DE2903362A1 (en) 1979-01-29 1979-01-29 Electromagnetic air brake for rotary machine - combines flat and plunger armature attraction effects with electromagnet excitation to brake shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792903362 DE2903362A1 (en) 1979-01-29 1979-01-29 Electromagnetic air brake for rotary machine - combines flat and plunger armature attraction effects with electromagnet excitation to brake shaft

Publications (1)

Publication Number Publication Date
DE2903362A1 true DE2903362A1 (en) 1980-07-31

Family

ID=6061659

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792903362 Ceased DE2903362A1 (en) 1979-01-29 1979-01-29 Electromagnetic air brake for rotary machine - combines flat and plunger armature attraction effects with electromagnet excitation to brake shaft

Country Status (1)

Country Link
DE (1) DE2903362A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999010966A1 (en) * 1997-08-27 1999-03-04 Robert Bosch Gmbh Electric motor
WO2007130421A3 (en) * 2006-05-01 2008-04-10 Danaher Motion A braking or clutching device
US7681704B2 (en) * 2004-01-20 2010-03-23 Eaton Corporation Electromagnetic inertia brake for a power input shaft of a power transmission mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999010966A1 (en) * 1997-08-27 1999-03-04 Robert Bosch Gmbh Electric motor
US7681704B2 (en) * 2004-01-20 2010-03-23 Eaton Corporation Electromagnetic inertia brake for a power input shaft of a power transmission mechanism
WO2007130421A3 (en) * 2006-05-01 2008-04-10 Danaher Motion A braking or clutching device
US7717241B2 (en) 2006-05-01 2010-05-18 American Precision Industries, Inc. Braking or clutching device
US8371423B2 (en) 2006-05-01 2013-02-12 American Precision Industries, Inc. Braking or clutching device

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8127 New person/name/address of the applicant