EP1665304B1 - Vorrichtung zur betätigung eines elektrischen schaltgerätes - Google Patents

Vorrichtung zur betätigung eines elektrischen schaltgerätes Download PDF

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Publication number
EP1665304B1
EP1665304B1 EP03750542A EP03750542A EP1665304B1 EP 1665304 B1 EP1665304 B1 EP 1665304B1 EP 03750542 A EP03750542 A EP 03750542A EP 03750542 A EP03750542 A EP 03750542A EP 1665304 B1 EP1665304 B1 EP 1665304B1
Authority
EP
European Patent Office
Prior art keywords
electric motor
drive shaft
switching
lever
pole
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.)
Revoked
Application number
EP03750542A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1665304A1 (de
Inventor
Franz-Josef Körber
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.)
ABB Technology AG
Original Assignee
ABB Technology 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34400426&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1665304(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ABB Technology AG filed Critical ABB Technology AG
Publication of EP1665304A1 publication Critical patent/EP1665304A1/de
Application granted granted Critical
Publication of EP1665304B1 publication Critical patent/EP1665304B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • 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
    • H01H3/36—Driving mechanisms, i.e. for transmitting driving force to the contacts using belt, chain, or cord
    • 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
    • H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle

Definitions

  • the invention relates to a device for actuating an electrical switching device, in particular a high-voltage circuit breaker, according to the preamble of claim 1.
  • the invention further relates to a switching device, in particular a high-voltage circuit breaker, with an actuating device according to the invention.
  • Conventional power switches have a switching chamber with a fixed and a movable contact piece.
  • the movable contact piece is attached to one end of an insulating rod, whose other end is connected to one end of an actuating lever.
  • the other end of the operating lever is fixed to a rotary shaft, so that is moved by a rotation of the rotary shaft, the movable contact piece to the fixed contact piece, or away from it.
  • the length of the actuating lever is dimensioned such that the power switch is switched on or off by a rotation of the rotary shaft by a certain angle.
  • the rotary shaft is often rotated by means of a mechanical or hydromechanical spring-loaded drive; the drive is coupled to one end of a connecting rod, which is connected via a further lever to the rotary shaft of the circuit breaker.
  • a linear or approximately linear movement of the drive by a certain stroke causes a rotation of the rotary shaft by the predetermined angle and thus a switching operation.
  • a mechanical or hydromechanical spring storage drive of this type has an energy storage, which, for example, as a mechanical spring storage in the form of coil springs, coil springs, torsion springs or disc springs is executed.
  • This spring accumulator is tensioned by means of an elevator motor.
  • the spring accumulator is released by releasing a latch, or by actuation of a control valve, whereby the spring energy via a transmission, or via a hydraulic transmission medium, is transmitted to the connecting rod and thus exerts the required stroke on the connecting rod.
  • Such spring drives have a relatively complex structure of many individual moving parts and have a relatively large amount of space. Furthermore, such mechanically moving and frictional parts generally require regular maintenance and checks,
  • Corresponding switching devices in which the switching off via an energy storage spring, are in the GB 808 125 A1 described. There is provided for switching off an energy storage spring 24, with which the switch is actuated in the event of a switch-off.
  • the invention has for its object to provide a device for actuating a switching device, which has a simple structure with less space and is low maintenance. It is also an object of the invention to provide a corresponding switching device.
  • an electric motor with a rotating drive shaft which can be coupled via a transmission with the rotary shaft of the switching device is provided.
  • An energy storage for an activation or in particular for a shutdown is not provided. Rather, the elimination is effected exclusively by means of the electric motor.
  • an electric motor Compared to a mechanical or hydromechanical spring-loaded drive, an electric motor has a comparatively simple construction and has a smaller footprint. Also, the cost of its maintenance compared to a spring drive is reduced.
  • the use of a gear causes the torque that is transmitted to the rotary shaft of the switching device is greater than the torque that has to apply the electric motor.
  • a motor is provided to drive all switch poles.
  • a separate electric motor for driving each switch pole is providable.
  • the central axis of the drive shaft of the electric motor is parallel to the central axis of the rotary shaft, which is why the spatial arrangement of the electric motor is not determined by the position of the rotary shaft.
  • the electric motor is designed as a servomotor.
  • a servomotor offers over other electric motors the advantage that a correspondingly accurate rotation of a predetermined angle is executable. Furthermore, a servomotor, especially in short-term operation, provides a comparatively high torque.
  • the transmission is designed as a lever mechanism.
  • a lever mechanism which is also referred to as a four-element rotary joint or as a rocker arm, is reliable and requires little maintenance.
  • the lever mechanism can be dimensioned so that a rotation of the drive shaft of the electric motor causes a switching operation by 180 °.
  • a rotation of the drive shaft of the electric motor by less than 180 °, for example 90 °, causes a switching operation.
  • the electric motor must apply a correspondingly higher torque. With a rotation of 180 °, the torque to be applied by the electric motor is minimal.
  • an intermediate piece which is preferably designed as a circular disk, attached to the drive shaft of the electric motor, wherein the drive shaft facing the end of the connecting rod can be connected in at least two distances from the central axis of the drive shaft to the intermediate piece.
  • the transmission may be designed as a toothed belt drive, which is also relatively reliable and low maintenance.
  • the toothed belt drive has a transmission ratio of 1: 1 to 1: 6, preferably 1: 3.5.
  • the drive shaft of the electric motor will rotate by 70 ° to 420 °, preferably 245 °.
  • a small rotation angle of the drive shaft requires a high torque of the electric motor, and a large rotation angle requires a high angular velocity.
  • a practically desirable mean value is a rotation angle of about 245 °, ie a gear ratio of 1: 3.5.
  • a switching device in particular a high-voltage circuit breaker, claimed with an actuator according to the invention.
  • the actuator is also applicable to other high, medium and low voltage switching devices, such as circuit breakers, disconnectors, earthing and load disconnectors.
  • an actuating device is shown with a lever mechanism with switched-off switching device.
  • a first lever 16 is fixed transversely to the drive shaft 18, which via a connecting rod 14 acts on a second lever 12 which is fixed to a rotary shaft 10 of a switching device transversely to the rotary shaft 10.
  • an actuating lever 42 is also mounted transversely to the rotary shaft 10 on the gas chamber side, which actuates a movable contact piece of a switching chamber 40 via an insulating rod 44.
  • the switching chamber 40 is shown only symbolically.
  • An imaginary line V passes through the center axis of the drive shaft 18 and the center axis of the rotary shaft 10.
  • An imaginary center line M intersects the connecting line V and the center axis of the rotary shaft 10 at right angles.
  • the second lever 12 is inclined at an acute angle ⁇ against the center line M.
  • the end of the second lever 12 connected to the connecting rod 14 is located on the side of the center line M facing away from the drive shaft 18.
  • the first lever 16 is aligned with the connecting line V, its end connected to the connecting rod 14 pointing in the direction of the rotary shaft 10 ,
  • the first lever 16 of the drive shaft 18 by an angle ⁇ , in this case 180 ° rotated. During this rotation, the first lever 16, the connecting rod 14 and the second lever 12 are always on the same side of the connecting line V.
  • Fig. 2 the actuating device of Fig. 1 is shown with the switching device, as can be seen on the symbol of the switching chamber 40.
  • the first lever 16 is aligned again with the connecting line V, but its end connected to the connecting rod 14 facing away from the rotary shaft 10.
  • the second lever 12 is again inclined at an angle ⁇ to the center line M, but its end connected to the connecting rod 14 is located on the side of the center line M facing the drive shaft 18.
  • the first lever 16 is rotated by the drive shaft 18 by the angle ⁇ , in this case 180 °, in the opposite direction as when switching.
  • a rotation of the first lever 16 by 180 ° thus causes a rotation of the second lever by 2 * ⁇ .
  • L1 L2 * sin ( ⁇ ), where L1 is the length of the first lever 16 and L2, the length of the second lever 12.
  • the length of the connecting rod 14 is greater than the length of the second lever 12 to choose.
  • FIG. 3 an intermediate piece in the form of a circular disc 26 with a plurality of mounting options for a connecting rod 14 is shown.
  • the circular disc 26 is mounted on the drive shaft 18 of the electric motor, wherein the central axes of the circular disc 26 and the drive shaft 18 are aligned.
  • the circular disk 26 here has four holes 31, 32, 33 and 34, which are each mounted at a different radial distance from the central axis of the circular disk 26 and serve as a mounting option for the connecting rod 14.
  • the connecting rod 14, for example, also has a bore, so that the circular disk 26 and the connecting rod 14 can be connected by means of a bolt.
  • the radial distance of the bore 31, 32, 33 or 34, with which the connecting rod 14 is connected, from the central axis of the drive shaft 18 corresponds to the length L1 of the first lever 16 in Fig. 1 and Fig. 2.
  • the corresponding bore 31st , 32, 33 or 34 for connection to the connecting rod 14 is thus an adaptation of the lever mechanism to different lengths L2 of the second lever 12 and / or different rotational angle ⁇ of the rotary shaft 10 possible.
  • the circular disc is to be aligned so that the bore 31, 32, 33 or 34, with which the connecting rod 14 is connected, is switched off switching device on the connecting line V and the rotary shaft 10 points.
  • the arrangement of the holes on the circular disc is arbitrary, as shown for example by the arrangement of a first bore 31 and a second bore 32.
  • a third bore 33 and a fourth bore 34 are arranged, for example, so that their centers are aligned with the central axis of the drive shaft 18.
  • the embodiment of the intermediate piece is not limited to the shape described here as a circular disk, but rather the intermediate piece can be used as a Circular segment, as an oval, as a rod, as a triangle, as a rectangle or in any other form.
  • FIG. 4 shows an actuating device according to the invention with a toothed belt drive.
  • a first pulley 24 is mounted on the drive shaft 18 of the electric motor and a second pulley 22 on the rotary shaft 10 of the switching device.
  • Around the pulleys 22 and 24 around a toothed belt 20 is tensioned.
  • On the rotary shaft 10 and an actuating lever 42 is fixed transversely to the rotary shaft 10, which actuates a movable contact piece of a switching chamber 40 via an insulating rod 44.
  • the switching chamber 40 is shown only symbolically.
  • the gear ratio of the toothed belt drive is obtained as a quotient of the radius of the first pulley 24 and the radius of the second pulley 22. If the gear ratio is 1: 3, then a switching operation in which the rotary shaft 10 is to be rotated by 70 °, for example a rotation of the drive shaft 18 by 210 °.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Keying Circuit Devices (AREA)
  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Lock And Its Accessories (AREA)
EP03750542A 2003-09-13 2003-09-13 Vorrichtung zur betätigung eines elektrischen schaltgerätes Revoked EP1665304B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2003/010199 WO2005034156A1 (de) 2003-09-13 2003-09-13 Vorrichtung zur betätigung eines elektrischen schaltgerätes

Publications (2)

Publication Number Publication Date
EP1665304A1 EP1665304A1 (de) 2006-06-07
EP1665304B1 true EP1665304B1 (de) 2007-06-27

Family

ID=34400426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03750542A Revoked EP1665304B1 (de) 2003-09-13 2003-09-13 Vorrichtung zur betätigung eines elektrischen schaltgerätes

Country Status (8)

Country Link
US (1) US8035329B2 (zh)
EP (1) EP1665304B1 (zh)
JP (1) JP2007515744A (zh)
CN (1) CN100458995C (zh)
AT (1) ATE365970T1 (zh)
AU (1) AU2003270192A1 (zh)
DE (1) DE50307589D1 (zh)
WO (1) WO2005034156A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2461108C1 (ru) * 2011-07-14 2012-09-10 Общество с ограниченной ответственностью "Техкам-Сервис" Электромеханический переключатель
RU173314U1 (ru) * 2017-05-12 2017-08-22 Алексей Алексеевич Еремин Электромеханическое переключающее устройство для обеспечения бесперебойного электропитания потребителей

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WO2015111133A1 (ja) 2014-01-21 2015-07-30 三菱電機株式会社 ガス絶縁開閉装置および開閉器
DE102015200135A1 (de) * 2015-01-08 2016-07-14 Siemens Aktiengesellschaft Kopplungsglied für ein elektrisches Schaltgerät,insbesondere eine Vakuumschaltröhre
DE102016214544B4 (de) * 2016-08-05 2020-01-09 Siemens Aktiengesellschaft Getriebe zwischen einem bewegbaren Schaltkontakt und einem Antrieb eines Leistungsschalters sowie ein Leistungsschalter mit einem solchen Getriebe

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2461108C1 (ru) * 2011-07-14 2012-09-10 Общество с ограниченной ответственностью "Техкам-Сервис" Электромеханический переключатель
RU173314U1 (ru) * 2017-05-12 2017-08-22 Алексей Алексеевич Еремин Электромеханическое переключающее устройство для обеспечения бесперебойного электропитания потребителей

Also Published As

Publication number Publication date
DE50307589D1 (de) 2007-08-09
US20060220470A1 (en) 2006-10-05
JP2007515744A (ja) 2007-06-14
AU2003270192A1 (en) 2005-04-21
ATE365970T1 (de) 2007-07-15
US8035329B2 (en) 2011-10-11
CN100458995C (zh) 2009-02-04
CN1839455A (zh) 2006-09-27
WO2005034156A1 (de) 2005-04-14
EP1665304A1 (de) 2006-06-07

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