EP1726025A1 - Dispositif d'entrainement dote d'un arbre d'entrainement et d'un arbre de sortie, notamment pour entrainer un plot de contact d'un appareil de distribution electrique - Google Patents

Dispositif d'entrainement dote d'un arbre d'entrainement et d'un arbre de sortie, notamment pour entrainer un plot de contact d'un appareil de distribution electrique

Info

Publication number
EP1726025A1
EP1726025A1 EP05738520A EP05738520A EP1726025A1 EP 1726025 A1 EP1726025 A1 EP 1726025A1 EP 05738520 A EP05738520 A EP 05738520A EP 05738520 A EP05738520 A EP 05738520A EP 1726025 A1 EP1726025 A1 EP 1726025A1
Authority
EP
European Patent Office
Prior art keywords
drive
output shaft
rotation
shaft
drive shaft
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
EP05738520A
Other languages
German (de)
English (en)
Other versions
EP1726025B1 (fr
Inventor
Manfred Meinherz
Jörg Tietze
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP1726025A1 publication Critical patent/EP1726025A1/fr
Application granted granted Critical
Publication of EP1726025B1 publication Critical patent/EP1726025B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/54—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/11—Tripping mechanism

Definitions

  • Drive device with a drive shaft and an output shaft, in particular for driving a contact piece of an electrical switching device
  • the invention relates to a drive device with a rotatable drive shaft and a rotatable output shaft.
  • a drive device is known from US Pat. No. 4,240,300, for example, in which helical springs acting as energy stores are compressed by means of a rotatable drive shaft.
  • the drive device When the drive device is actuated, the energy stored in the compressed coil springs is transmitted to an output shaft within a very short time interval.
  • the output shaft is used to transmit a movement to a movable contact piece of a circuit breaker for switching a circuit.
  • the spiral springs are tensioned by means of a slowly running drive device. However, the energy stored in the tensioned coil springs is released suddenly.
  • a variety of shafts, gears, levers and connecting rods are required to be moved. Due to the fast movement, the individual elements of the drive device must be dimensioned in large volumes and represent a deficient? Arrangement.
  • the object of the invention is to design a drive device of the type mentioned at the outset with a simplified structure.
  • the object is achieved according to the invention in a drive device of the type mentioned at the outset by connecting to one another by means of a magnetic coupling having at least two magnet pairs, a first blocking device limiting the rotatability of the output shaft in a first direction of rotation and, after the first blocking device becomes effective, by the magnetic coupling outgoing magnetic forces, a movement of the output shaft takes place in a second, opposite direction of rotation.
  • a magnetic coupling is known, for example, from the publication "Permanent Magnetic Synchronous Coupling" from KTR.
  • a magnetic coupling enables contactless torque transmission.
  • Such magnetic couplings transmit a continuous rotary movement, for example of a drive motor and to a pump.
  • a so-called containment shell is arranged between the coupling elements by means of the containment shell, it is possible to transmit rotary movements through walls in which the introduction of an opening for the passage of a rotatable shaft is not desired.
  • the known magnetic coupling transmits the movement of the drive shaft directly to the output shaft. This means that the transmission of the drive movement is almost slip-free.
  • the magnet pairs each have a north or south pole on the mutually facing surfaces, so that attractive forces arise between the magnet pairs.
  • the output shaft and the drive shaft are coupled to one another via these forces and movements can be transmitted.
  • the first blocking device the output shaft is blocked in a first direction of rotation.
  • Such a blocking device can be designed, for example, in the form of a stop.
  • the striking forces the magnet pairs assigned to one another to be displaced.
  • the input and output shafts which are usually moved synchronously to one another, are moved asynchronously to one another. If the offset of the input shaft and the output shaft relative to one another is such that the magnet pair partners assigned to one another change due to the magnetic forces, the output shaft is moved in a second, opposite direction of rotation. This makes it easy to use a magnetic coupling to reverse the direction of rotation between the input and output shafts. Since only the magnetic coupling itself is necessary for this, the use of
  • Deflection gears or the like can be dispensed with. This results in a very compact and light arrangement.
  • the drive shaft is moved and moved further when the output shaft is blocked.
  • the speed of the reversal of the direction of rotation can easily be influenced by moving the drive shaft further. Additional acceleration of the drive shaft after the first blocking device takes effect also causes the direction of movement to be reversed rapidly. It is particularly advantageous if, when the drive shaft begins to rotate, the output shaft is already prevented from moving in the first direction of rotation by the blocking device. This makes it possible to immediately start the reversal of the rotational movement. Furthermore, it can be particularly advantageously provided that the transition in the second direction of rotation of the output shaft is abrupt.
  • a second blocking device forces a reversal of the movement of the output shaft from the second to the first direction of rotation.
  • the output shaft rotate back and forth between the first and the second blocking device.
  • a certain angle of rotation of the output shaft can be provided. This angle of rotation can for example 45 °, 60 °, 72 ° or 90 °.
  • the position of the blocking devices with respect to the output shaft must be selected accordingly.
  • Another object of the invention is to provide a suitable method for operating a magnetic coupling which couples an input shaft and an output shaft to one another.
  • the drive shaft is moved, the output shaft is blocked in a first direction of rotation, the drive shaft is moved further and the output shaft is suddenly moved in a second direction of rotation, which is opposite to the first direction of rotation.
  • the method according to the invention makes it possible to convert a continuous rotary movement into a sudden rotary movement using a magnetic coupling.
  • the drive shaft tries to move the output shaft in a first direction of rotation, in which it is blocked.
  • the output shaft is rotated in a second direction of rotation which is opposite to the first direction of rotation. So it is possible to use a magnetic coupling to transform a rotary motion.
  • a drive device with the features described above is used in order to use the movement of the output shaft to drive a movable contact piece of an electrical switching device.
  • switching devices are used whose contact pieces have to be moved suddenly.
  • Such switching devices are, for example, circuit breakers, fast earth switches or load switches.
  • the contact piece can be moved from its switch-off position to the switch-on position or vice versa.
  • Conventional gears such as hydraulic gears or mechanical gears with toothed elements are subject to increased wear due to the sudden movements.
  • a drive device according to the invention with a magnetic coupling allows high drive forces to be transmitted, with only slight mechanical wear occurring. Furthermore, it has hitherto been customary to provide complex energy stores, such as, for example, compression springs or hydraulic stores or compressed air stores, in order to provide large amounts of energy for moving the contact pieces in short periods of time.
  • the drive device according to the invention now allows relatively slow-running, continuously acting drives to be used and to generate a sudden movement on the output shaft. This means that cost-intensive energy storage can be dispensed with.
  • a further advantage is that appropriate containment shells can be used in magnetic clutches according to the invention, which penetrate the magnetic gap of the clutch and thereby enable a hermetic separation of the drive and driven side of the drive device.
  • Figure 1 shows the schematic structure of an input shaft and an output shaft with a magnetic coupling
  • Figure 2 shows the sequence of a method according to the invention.
  • the drive shaft 1 and the output shaft 2 are each rotatably mounted.
  • the drive shaft 1 can be rotated by a drive lever 3.
  • a blocking lever 4 is arranged on the output shaft 2.
  • the drive shaft 1 and the output shaft 2 are arranged coaxially to one another so that they face each other on the end face.
  • a magnetic coupling 5 is arranged at their mutually facing ends.
  • the magnetic coupling 5 has a coupling element 6 on the drive side and a coupling element 7 on the driven side.
  • the coupling element 6 on the drive side is arranged on the drive shaft 1.
  • the coupling element 7 on the output side is arranged on the output shaft 2.
  • the drive-side coupling element 6 is designed as a hollow cylinder.
  • a plurality of magnets are arranged. These magnets are preferably permanent magnets. The radial distribution is chosen such that the north and south poles of the magnets are arranged alternately on the inner circumferential surface of the hollow cylindrical drive-side coupling element 6.
  • the coupling element on the driven side is cylindrical and has a diameter such that it can be moved into the hollow cylindrical coupling element 6 on the drive side.
  • the coupling element 7 on the output side has radially distributed alternating north and south poles of magnets on its outer circumferential surface.
  • the radial distribution of the magnets on the drive-side coupling element 6 and on the driven-side coupling element 7 is selected in such a way that a plurality of magnet pairs is formed when the driven-side coupling element 7 is inserted into the drive-side coupling element 6, which pairs are clearly assigned to one another via the magnetic forces ,
  • FIG. 1 shows the magnetic coupling 5 in an uncoupled state.
  • the two coupling elements 6, 7 are to be plugged into one another.
  • the coupling elements 6, 7 can be designed, for example, according to the magnetic coupling known from the KTR publication “Permanent Magnetic Synchronous Coupling”.
  • magnetic couplings can be used.
  • coupling elements that are to be arranged on the end faces of one another in order to achieve a coupling effect, or coupling elements that allow the axes of rotation of the coupling elements to be arranged differently from a coaxial arrangement.
  • Such arrangements are for example parallel axes of rotation (the magnetic poles are then each radially on the outer circumference of the coupling elements) or angular axes of rotation in the manner of a bevel gear.
  • FIG. 2 shows a sectional illustration through the magnetic coupling 5, the coupling element 6 on the drive side encompassing the coupling element 7 on the output side, as a result of which the respective magnet pairs can exert a force effect on one another.
  • the coupling of a drive device 8 is shown schematically on the drive lever 3.
  • the drive device 8 can be, for example, an electromotive drive, in particular an electromagnetic linear drive.
  • an electrical switching device 9 is shown symbolically in FIG.
  • the electrical switching device 9 has a movable contact piece, which is shown schematically coupled to the blocking lever 4.
  • the electrical switching device 9 can in particular be an earthing switch or a fast earthing switch in the field of electrical high-voltage technology.
  • a rotational movement of the output shaft 2 in a first direction of rotation 11 is limited via the blocking lever 4 by means of a first blocking device 10.
  • the mobility of the output shaft in a second direction of rotation 13 is limited by means of a second blocking device 12.
  • the first blocking device 10 and the second blocking device 12 are designed in the form of stop bodies against which the blocking lever 4 abuts alternately.
  • the possible rotation angle of the output shaft 2 is limited by the arrangement of the blocking devices 10, 12. In the interest of a simplified representation, only the poles of the magnet pairs required to transmit the movement were shown. In the case of the coupling elements 6, 7 shown in FIG.
  • the blocking lever 4 is pressed against the first blocking device 10.
  • the drive shaft 1 is moved further by means of the drive lever 3.
  • the half switching angle in the present example 30 °
  • the magnetic coupling 5 is tilted. This means that the magnet pairs are offset from one another by about half of the effective pole faces. If the drive lever 3 is moved further in the first direction of rotation 11, then pole faces of the same polarity overlap more and more. Magnets of the same polarity repel each other.
  • the repulsive forces are so great that the blocking lever 4 is suddenly moved in the second direction of rotation 13 with the output shaft 2. In this rotary device strikes the blocking lever 4 against the second blocking device 12.
  • the blocking lever 4 is first pressed against the first blocking device 10 due to the attractive magnetic forces of the magnet pairs of unequal polarity.
  • the repulsive forces of pole faces of the same polarity are used.
  • the blocking lever 4 moves back from the second blocking device 12 to the first blocking device 10 in the same way.
  • 12 pairs of magnets with different magnetic poles face each other both when the blocking lever 4 abuts the first blocking device 10 and when the blocking lever 4 bears against the second blocking device, so that a stable position of the output shaft occurs independently the force of the magnetic coupling is generated.
  • the drive movement can also be transmitted through a closed wall.
  • the wall can be, for example, an encapsulation housing of a pressure-gas-insulated switchgear or a pressure-gas-insulated switchgear.
  • the containment can is part of the wall.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

L'invention concerne un dispositif d'entraînement pourvu d'un arbre d'entraînement et d'un arbre de sortie (1,2), lesquels sont reliés par un accouplement magnétique (5). L'arbre de sortie (2) peut, dans un sens de rotation, être bloqué de telle sorte que des forces magnétiques exercées par l'accouplement magnétique (5) provoquent le mouvement de l'arbre de sortie (2) dans le sens opposé au sens de blocage, ce mouvement de l'arbre de sortie (2) étant brusque.
EP05738520A 2004-03-17 2005-03-08 Dispositif d'entrainement dote d'un arbre d'entrainement et d'un arbre de sortie, notamment pour entrainer un plot de contact d'un appareil de distribution electrique Not-in-force EP1726025B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004014162A DE102004014162A1 (de) 2004-03-17 2004-03-17 Antriebseinrichtung mit einer Antriebswelle und einer Abtriebswelle insbesondere zum Antrieb eines Kontaktstückes eines elektrischen Schaltgerätes
PCT/DE2005/000444 WO2005091320A1 (fr) 2004-03-17 2005-03-08 Dispositif d'entrainement dote d'un arbre d'entrainement et d'un arbre de sortie, notamment pour entrainer un plot de contact d'un appareil de distribution electrique

Publications (2)

Publication Number Publication Date
EP1726025A1 true EP1726025A1 (fr) 2006-11-29
EP1726025B1 EP1726025B1 (fr) 2010-07-14

Family

ID=34966734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05738520A Not-in-force EP1726025B1 (fr) 2004-03-17 2005-03-08 Dispositif d'entrainement dote d'un arbre d'entrainement et d'un arbre de sortie, notamment pour entrainer un plot de contact d'un appareil de distribution electrique

Country Status (5)

Country Link
US (1) US7746200B2 (fr)
EP (1) EP1726025B1 (fr)
CN (1) CN100524560C (fr)
DE (2) DE102004014162A1 (fr)
WO (1) WO2005091320A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2439111B (en) * 2006-06-16 2009-10-07 Univ Sheffield Magnetic gear
DE102014203477A1 (de) 2014-02-26 2015-08-27 Siemens Aktiengesellschaft Anordnung aufweisend eine Magnetkupplung sowie Verwendung einer derartigen Anordnung
DE102015204666A1 (de) * 2015-03-16 2016-09-22 Siemens Aktiengesellschaft Schaltanordnung für eine gasisolierte Schaltungsanlage und entsprechende Schaltungsanlage
DE102015209434A1 (de) 2015-05-22 2016-11-24 Siemens Aktiengesellschaft Federspeicherantrieb
CN107346931A (zh) * 2016-05-04 2017-11-14 丁金助 磁能传动发电机

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US2475232A (en) * 1945-06-04 1949-07-05 Howe & Fant Inc Telemetric system
US2481360A (en) * 1948-07-21 1949-09-06 Gen Electric Intermittent motion magnetic drive
NL84461C (nl) * 1952-03-06 1957-03-15 Philips Nv Inrichting voor het omzetten van in één richting roterende beweging in een heen en weer gaande beweging of omgekeerd
US2857538A (en) * 1954-10-08 1958-10-21 Philips Corp Arrangement for converting a tangentially oscillating movement about a shaft into a rotational movement in one direction
NL224360A (fr) * 1957-03-11
US3025372A (en) * 1958-08-07 1962-03-13 Benjetsky Louis Reciprocating type actuating means
JPS5429067A (en) * 1977-08-08 1979-03-03 Mitsubishi Electric Corp Control mechanism
US4163164A (en) * 1977-10-11 1979-07-31 Micropump Corporation Split magnet drive
DE8203014U1 (de) 1982-02-05 1984-08-30 Kraus, Bruno, 8900 Augsburg Vorrichtung zum beruehrungslosen umsetzen einer drehbewegung in eine hin- und hergehende bewegung
IL106200A0 (en) * 1993-06-30 1993-10-20 Naan Irrigation Systems Irrigation apparatus
US5717266A (en) * 1996-03-11 1998-02-10 The Penn State Research Foundation High power oscillatory drive
DE10061900B4 (de) * 2000-12-12 2007-10-31 Sirona Dental Systems Gmbh Zahnärztliches Instrument mit einem angetriebenen Werkzeug und einer Übertragungseinrichtung mit magnetischen Kupplungselementen
DE10063693C1 (de) * 2000-12-20 2002-08-01 Bsh Bosch Siemens Hausgeraete Drehknebeleinrichtung
US20020186647A1 (en) * 2001-06-06 2002-12-12 Delta Eletronics Inc. Magnetic coupling power transmission apparatus for optical disk drive
JP2005269709A (ja) * 2004-03-16 2005-09-29 Maguneo Giken:Kk 磁気回転伝達装置及び密閉撹拌装置

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Also Published As

Publication number Publication date
US7746200B2 (en) 2010-06-29
CN100524560C (zh) 2009-08-05
WO2005091320A1 (fr) 2005-09-29
US20080047374A1 (en) 2008-02-28
CN1922701A (zh) 2007-02-28
EP1726025B1 (fr) 2010-07-14
DE502005009900D1 (de) 2010-08-26
DE102004014162A1 (de) 2005-10-13

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