EP2602804B1 - Betätigungsvorrichtung für die Pole in einer elektrischen Mittelspannungsbetätigungseinrichtung - Google Patents

Betätigungsvorrichtung für die Pole in einer elektrischen Mittelspannungsbetätigungseinrichtung Download PDF

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Publication number
EP2602804B1
EP2602804B1 EP12306303.4A EP12306303A EP2602804B1 EP 2602804 B1 EP2602804 B1 EP 2602804B1 EP 12306303 A EP12306303 A EP 12306303A EP 2602804 B1 EP2602804 B1 EP 2602804B1
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EP
European Patent Office
Prior art keywords
cam
shaft
called
roller
control device
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.)
Not-in-force
Application number
EP12306303.4A
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English (en)
French (fr)
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EP2602804A1 (de
Inventor
Yves Belin
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP2602804A1 publication Critical patent/EP2602804A1/de
Application granted granted Critical
Publication of EP2602804B1 publication Critical patent/EP2602804B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
    • 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
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3015—Charging means using cam devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • 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
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable

Definitions

  • the present invention relates to a device for controlling the poles of an electrical control device adapted to drive a shaft, said first, for supporting the mobile contacts of the appliance between an open position of the pole in which the movable contacts and the fixed contacts of the apparatus are separated and a closed position of the pole in which these movable and fixed contacts are in contact, said device comprising a closing spring controlled by an actuating shaft, said second, said spring being able to transmit closing energy said shaft said first after compression and passage of said spring beyond a line of neutral passage, via a cam rotated by said shaft said second, and cooperating with a roller secured to the shaft said first, holding means of the said first control shaft in the closed position, and unlocking means of the aforementioned holding means permitting t quick opening of the device contacts.
  • Pole control devices comprising a closing spring capable of supplying the closing energy to a cam capable of retransmitting this energy to the control shaft of the poles by means of a roller and comprising a control device are known. hooking adapted to retain the pole control shaft in a closed position.
  • this attachment system generates a large number of parts.
  • the document US 5140117 A discloses a device for controlling the poles of an electrical control device adapted to drive a shaft (the transverse bar 216), said first, for supporting the movable contacts (204) of the apparatus between an open position of the pole in which the movable contacts (204) and fixed contacts (202) of the apparatus are separated and a closed position of the pole in which these movable (204) and stationary contacts (202) are in contact, said device comprising a spring (244A, 244B ) closure controlled by an actuating shaft (232), said second.
  • said spring (244A, 244B) is capable of transmitting a closing energy to said first said shaft after extension and passage of said spring (244A, 244B) beyond a dead point line of passage, by the intermediate of a cam (230) driven in rotation by said shaft said second (232), and cooperating with a roller (212) integral with said first shaft.
  • the device comprises holding means (the surface of the cam 230) of the control shaft said first in the closed position, and unlocking means (the surface of the cam) of the aforementioned holding means allowing the rapid opening of the contacts of the device, the aforementioned holding means and the aforementioned unlocking means being carried by said cam.
  • the present invention solves these problems and proposes a device for controlling the poles of an electrical control apparatus, of simple design in that it does not use a fastening system for the maintenance in closing, in which the Excess energy is managed, and having a high speed of opening.
  • the subject of the present invention is a control device according to claim 1.
  • the aforementioned cam comprises a so-called first part of which at least a portion of the outer surface cooperates with the roller so that it remains in abutment on the cam after the closure thus achieving the maintenance in the closed position of the tree says first.
  • the fixed and movable cams comprise elongated openings capable of cooperating with studs secured to the said second shaft, so as to allow the relative rotation between the two cams between two positions defined by the ends of the openings and corresponding respectively at a position in which the two cams are driven at the same time and a position in which the aforementioned beak portion is retracted.
  • the fixed cam and the movable cam have substantially the same shape, the movable cam being of larger size that the cam fixed, so that when the two cams are driven at the same time, the two beak portions are offset so that at the end of the opening maneuver of the said second shaft, the roller cooperates only with the spout of the moving cam.
  • the movable cam is rotatable relative to the fixed cam about the axis of rotation of the said second shaft, and in that when the two cams are driven at the same time, the two parts forming bec are offset angularly with respect to said axis so that at the end of the opening maneuver of said second shaft, the roller cooperates only with the spout of the movable cam.
  • the cam comprises means for absorbing the excess energy generated during the closing operation of the apparatus, this energy being absorbed by re-compression of the closing spring and friction of the roller on the cam.
  • these means for absorbing the excess energy comprise a so-called second cam portion interposed between the aforementioned first portion of the cam and the mouth of the cam, this second portion having a surface cooperating with the roller to absorb the excess energy generated during compression closure of the spring and friction on the roller.
  • each cam has a first portion in the form of a disk portion having a first radius for maintaining the closing of the control shaft, followed by a second portion in the form of a disk portion having the same radius and allowing absorption of excess energy generated during closure, followed by a third disc-shaped portion having a radius greater than the first radius, and terminated by a beak portion.
  • the apparatus is a medium voltage electrical appliance.
  • the apparatus is a switch, the said first operating shaft being controlled manually or automatically.
  • a power source driving an actuator, such as an electric motor.
  • said first cam portion is separated from said second cam portion by a boss constituting a brake during rotation of the cam.
  • control device controls the contacts of a vacuum interrupter.
  • a control device D of the poles of a medium-voltage electrical control device according to the invention such as a medium-voltage electrical switch, is seen, this control device being intended to control the contacts (not shown) of a light bulb. empty A.
  • This device comprises for each pole of the apparatus, a first pole control shaft 1, rotatable between an open position and a closed position of the contacts of the device.
  • This device also comprises a closing said spring 2 controlled by a shaft said second 3 crankshaft, operable by a user from the outside of the device to perform a maneuver manual opening or closing the device by drive of the control shaft says first 1.
  • This first said shaft comprises a crank 4 comprising a roller 5 adapted to cooperate with a cam system 6 controlled by the aforementioned spring 2 as will be explained in the following.
  • This spring 2 is supported by a 2a of its ends on a fixed point of the frame of the apparatus, and by its opposite end 2b, is mechanically connected to this cam system so that the maneuver of the shaft of compression of the spring, said second, in the closing direction, drives the cam system 6 in rotation and the compression of the spring until the spring passes beyond a neutral line of passage, after which the spring takes over to drive the cams 7,8, which then cooperate with the roller 5 to drive the said first shaft to a closed position of the contacts.
  • the opening of the contacts is achieved by the drive in the same direction of the said second control shaft.
  • This cam system 6 is rotatably mounted about an axis X corresponding to that of the said second shaft 3 for actuating the spring 2 and comprises, as illustrated in FIGS. Figures 7 to 10 a fixed cam 7 integral with said second shaft, and a so-called movable cam 8 rotatably mounted about this axis X with respect to the fixed cam 7 between two positions by means of two studs 9,10 integral with said second shaft cooperating respectively with two openings 11,12 provided in said cam said mobile, the rotational stroke of the movable cam being defined by the shape and dimensions of the openings and the position of the pads on the shaft said second.
  • cams 7.8 are mounted on the said second shaft 3, so as to be superimposed on one another, these two cams having the same profile, the movable cam being larger than the fixed cam so as to exceed this one side when superimposed.
  • Each of these cams is formed of three successive disk portions, namely a first and a second disk portion 13, 14 of the same radius separated by a protuberance 15, then a last portion 16 separated from the second portion 14 by a protrusion 17 having a radius greater than that of the last two aforesaid portions 13,14 and terminating in a spout 18.
  • first and second cam portions have substantially the same constant radius so as not to further compress the opening spring and contact pressure.
  • the aforementioned crank 4 is constituted by two flanges 19,20 parallel to each other connected by an axis 21 supporting the aforementioned roller 5, the roller 5 being intended to cooperate with the aforesaid cams 7,8.
  • the user drives the compression shaft 3 of the so-called second spring in rotation in the clockwise direction.
  • This rotation causes the rotation in the same direction of the two cams 7,8.
  • the movable cam 8 exceeds the fixed cam 7 on both sides thereof, this being due to the fact that it was driven by the roller 5 during the opening that preceded.
  • the aforementioned pads 9,10 move towards the first end 11a, 12a of openings 11,12 and are able to drive the movable cam 8 in rotation.
  • the movable cam protrudes from the fixed cam only at one end of the two cams, the end forming a spout 18, while at the opposite end, the two cams are superimposed.
  • the so-called second shaft 3 supplies the closing energy to a cam system 6 which retransmits this energy onto the first shaft 1 via a roller 5. From the moment when the roller is in contact with the cam and during the duration of the closing maneuver, this roller 5 remains in abutment on the surface of the cams, as shown in FIG. figure 4 .
  • the first part 13 of the cam makes it possible to maintain the closing of the control shaft 1 while the second part 14 makes it possible to absorb the excess energy of the control, by recompression of the closing spring 2 and friction of the roller 5 on the cams 7.8.
  • the profile of the cams is such that the roller remains in contact with the cams even with a very high excess energy, as illustrated in FIG. figure 5 .
  • a second operating orifice 23 mechanically connected to the first 22 by a gear system 24 is used. This makes it possible to reverse the operating direction, the operating shaft 3 being always driven in the same direction.
  • the movable cam thus allows the rapid opening of the device by the fact of its retraction, and therefore eliminates any component of effort of the shaft supporting the cams on the roller.
  • the movable cam 8 escapes under the effect of the roller 5 and does not slow the rotation thereof. So we do not have to continue compressing the spring 2 at the beginning of the rotation of the said first control shaft, as this would be the case in order to rotate the cams a little more in order to release the roller, if the moving cam was not present, and only a fixed cam was used. Continuing to compress the closing spring would result in a loss of opening speed.
  • This movable cam thus allows the control shaft of said poles first to be completely free at the beginning of the opening, as when releasing a snap.
  • a control device has thus been made thanks to the invention making it possible to keep the pole in the closed position by the closing cam which supplies the closing energy on the roller of the pole operating shaft.
  • This control device makes it possible to open the pole by rotating the shaft which supplies the closing energy, by compressing its spring, which makes it possible to store a part of the closing energy in its spring for a next maneuver.
  • a second cam has been created having a degree of freedom with respect to the first, so as not to slow down the opening of the pole control shaft, which otherwise could come into abutment on it via the roller.
  • a device for controlling the poles of an electrical switching device of simple design, has been realized in that this device does not include an attachment device for maintaining the control shaft. poles in the closed position.
  • the excess energy generated during the closing is managed by the recompression of the closing spring and the outer surface of the cam cooperating with the roller.
  • the profile of the cam absorbs excess energy without opening the device.
  • the shape of the cam is not limited to that in disc portion illustrated, but can take any form having a semi-spherical portion allowing the juxtaposition of the two cams, the holding in the closed position of the control shaft by a first cam portion and the absorption of excess energy by a second portion of the cam and a portion having means for retracting the movable cam by the roller.
  • This device also has a high opening speed in that the pole control shaft can be released quickly, as in a latching, at the beginning of the rotation of the control shaft to achieve the opening thanks to the retraction of the mobile cam eliminating any risk of shock and energy absorption.
  • the invention is applicable to any type of electrical control and / or protection equipment comprising a contact control device.

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  • Transmission Devices (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Claims (12)

  1. Steuervorrichtung der Pole eines elektrischen Steuergeräts, die eine erste genannte Trägerwelle der beweglichen Kontakte des Geräts zwischen einer offenen Stellung des Pols, in der die beweglichen Kontakte und die ortsfesten Kontakte des Geräts getrennt sind, und einer geschlossenen Stellung des Pols antreiben kann, in der diese beweglichen und ortsfesten Kontakte in Kontakt sind, wobei die Vorrichtung eine von einer zweite genannten Betätigungswelle gesteuerte Schließfeder, wobei die Feder eine Schließenergie an die erste genannte Welle nach Komprimieren und Übergang der Feder über eine Totpunkt-Übergangslinie hinaus mittels einer Nockenscheibe übertragen kann, die von der zweite genannten Welle in Drehung versetzt wird, und mit einer fest mit der erste genannten Welle verbundenen Laufrolle zusammenwirkt, Halteeinrichtungen der erste genannten Steuerwelle in der Schließstellung und Entriegelungsvorrichtungen der erwähnten Halteeinrichtungen aufweist, die die schnelle Öffnung der Kontakte des Geräts ermöglichen, wobei die erwähnten Halteeinrichtungen (13) sowie die erwähnten Entriegelungsvorrichtungen (18) der Halteeinrichtungen von der Nockenscheibe (7, 8) zum Antrieb der die Kontakte tragenden Welle getragen werden, wobei das Profil der Nockenscheibe so ist, dass die Laufrolle in der erwähnten Haltestellung auf der Nockenscheibe in Auflage bleibt,
    wobei die erwähnten Entriegelungsvorrichtungen (18) einen Teil in Form einer Nase (18) aufweisen, die zur Nockenscheibe (7, 8) gehört, wobei dieser Teil von der Laufrolle (5) am Ende der Öffnungsbetätigung des Geräts entsprechend dem Beginn der Drehung der erste genannten Steuerwelle (1) in Öffnungsrichtung eingezogen werden kann, um die schnelle Öffnung dieser Steuerwelle zu ermöglichen,
    wobei bei einer Öffnungsbetätigung des Pols die Druckfeder (2) komprimiert und die Nockenscheibe (7, 8) in Drehung versetzt wird, um die Nockenscheibe (7, 8) und die Laufrolle (5) zu einem Gleichgewichtspunkt zu bringen, wonach der eine Nase (18) bildende Teil der Nockenscheibe von der Laufrolle eingezogen wird, was die Öffnung der Kontakte bewirkt, und
    wobei die erwähnte Nockenscheibe eine ortsfest genannte Nockenscheibe (7) und eine beweglich genannte Nockenscheibe (8) aufweist, die bezüglich der ortsfesten Nockenscheibe in Drehung beweglich ist, wobei die zwei Nockenscheiben so gestaltet sind, dass bei einer Schließbetätigung die zweite genannte Welle (3) die zwei Nockenscheiben (7, 8) gleichzeitig antreibt und die Laufrolle (5) mit der Außenfläche der zwei Nockenscheiben zusammenwirkt, dass bei einer Öffnungsbetätigung die zweite genannte Welle in der gleichen Richtung angetrieben wird, und dass am Ende der Öffnungsbetätigung die Laufrolle (5) nur mit dem eine Nase bildenden Teil (18) der beweglichen Nockenscheibe (8) zusammenwirkt, so dass die Kraftkomponente der Laufrolle (5) auf die Nockenscheibe die bewegliche Nockenscheibe (8) durch deren Drehung bezüglich der ortsfesten Nockenscheibe (7) vertreibt und die erste genannte Welle freisetzt (1).
  2. Steuervorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die erwähnte Nockenscheibe (7, 8) einen erster genannten Teil (13) aufweist, von dem mindestens ein Teil der Außenfläche mit der Laufrolle (5) derart zusammenwirkt, dass diese nach dem Schließen auf der Nockenscheibe (7, 8) in Auflage bleibt, wodurch der Halt der erste genannten Welle (1) in Schließstellung realisiert wird.
  3. Steuervorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die ortsfeste (7) und die bewegliche Nockenscheibe (8) längliche Öffnungen (112) aufweisen, die mit fest mit der zweite genannten Welle (3) verbundenen Klötzchen (9,10) zusammenwirken können, um die relative Drehung zwischen den Nockenscheiben (7, 8) zwischen zwei von den Enden (11a, 12a, 11 b, 12b) der Öffnungen (11, 12) begrenzten Stellungen zu ermöglichen, die einer Stellung, in der die zwei Nockenscheiben (7, 8) gleichzeitig angetrieben werden, bzw. einer Stellung entsprechen, in der der erwähnte eine Nase (18) bildende Teil eingezogen ist.
  4. Steuervorrichtung nach Anspruch 1 oder 3, dadurch gekennzeichnet, dass die ortsfeste Nockenscheibe (7) und die bewegliche Nockenscheibe (8) im Wesentlichen die gleiche Form haben, wobei die bewegliche Nockenscheibe (8) eine größere Abmessung hat als die ortsfeste Nockenscheibe (7), damit, wenn die zwei Nockenscheiben gleichzeitig angetrieben werden, die zwei eine Nase (18) bildenden Teile versetzt sind, damit am Ende der Öffnungsbetätigung der zweite genannten Welle die Laufrolle nur mit der Nase (18) der beweglichen Nockenscheibe (8) zusammenwirkt.
  5. Steuervorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die bewegliche Nockenscheibe (8) bezüglich der ortsfesten Nockenscheibe (7) um die Drehachse X der zweite genannten Welle drehbeweglich ist, und dass, wenn die zwei Nockenscheiben gleichzeitig angetrieben werden, die zwei eine Nase (18) bildenden Teile winkelmäßig bezüglich der Achse X versetzt sind, damit am Ende der Öffnungsbetätigung der zweite genannten Welle die Laufrolle nur mit der Nase (18) der beweglichen Nockenscheibe (8) zusammenwirkt.
  6. Steuervorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Nockenscheibe (7,8) Einrichtungen aufweist, um die bei der Schließbetätigung des Geräts erzeugte überschüssige Energie zu absorbieren, wobei diese Energie durch erneutes Komprimieren der Schließfeder (2) und Reibung der Laufrolle (5) auf der Nockenscheibe (7,8) absorbiert wird.
  7. Steuervorrichtung nach den Ansprüchen 1, 2 und 6, dadurch gekennzeichnet, dass diese Einrichtungen zum Absorbieren der überschüssigen Energie einen zweiter genannten Nockenscheibenabschnitt (14) aufweisen, der zwischen den erwähnten ersten Abschnitt (13) der Nockenscheibe und die Nase (18) der Nockenscheibe eingefügt ist, wobei dieser zweite Teil (14) eine Fläche aufweist, die mit der Laufrolle (5) zusammenwirkt, um die beim Schließen erzeugte überschüssige Energie durch Komprimieren der Feder (2) und Reibung auf der Laufrolle (5) zu absorbieren.
  8. Steuervorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass jede Nockenscheibe einen ersten Teil in Form eines Scheibenabschnitts (13) aufweist, der einen ersten Radius hat, der den Halt der Steuerwelle (1) in Schließstellung ermöglicht, gefolgt von einem zweiten Teil in Form eines Scheibenabschnitts (14), der den gleichen Radius hat und die Absorption der beim Schließen erzeugten überschüssigen Energie ermöglicht, gefolgt von einem dritten Teil (16) in Form eines Scheibenabschnitts, der einen größeren Radius als der erste Radius hat und in einem eine Nase (18) bildenden Teil endet.
  9. Steuervorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Gerät ein elektrisches Mittelspannungsgerät ist.
  10. Steuervorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Gerät ein Schalter ist, wobei die erste genannte Betätigungswelle manuell oder automatisch gesteuert wird (1).
  11. Steuervorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der erster genannte Nockenscheibenabschnitt (13) vom zweiter genannten Nockenscheibenabschnitt (14) durch eine Wölbung getrennt ist, die bei der Drehung der Nockenscheibe eine Bremse bildet.
  12. Steuervorrichtung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die erwähnte Steuervorrichtung die Kontakte einer Vakuumröhre steuert.
EP12306303.4A 2011-12-08 2012-10-22 Betätigungsvorrichtung für die Pole in einer elektrischen Mittelspannungsbetätigungseinrichtung Not-in-force EP2602804B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1103759A FR2984005B1 (fr) 2011-12-08 2011-12-08 Dispositif de commande des poles dans un appareil de commande electrique moyenne tension

Publications (2)

Publication Number Publication Date
EP2602804A1 EP2602804A1 (de) 2013-06-12
EP2602804B1 true EP2602804B1 (de) 2017-08-09

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Country Link
US (1) US9202643B2 (de)
EP (1) EP2602804B1 (de)
CN (1) CN103165300B (de)
AR (1) AR089127A1 (de)
AU (1) AU2012261539B2 (de)
BR (1) BR102012031087B1 (de)
CA (1) CA2796833C (de)
ES (1) ES2646178T3 (de)
FR (1) FR2984005B1 (de)
RU (1) RU2608172C2 (de)

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Publication number Publication date
RU2012151532A (ru) 2014-06-10
EP2602804A1 (de) 2013-06-12
AR089127A1 (es) 2014-07-30
BR102012031087B1 (pt) 2021-01-05
US20130186231A1 (en) 2013-07-25
CN103165300B (zh) 2019-04-19
AU2012261539B2 (en) 2015-03-05
CN103165300A (zh) 2013-06-19
US9202643B2 (en) 2015-12-01
BR102012031087A2 (pt) 2015-01-13
FR2984005B1 (fr) 2014-08-01
RU2608172C2 (ru) 2017-01-17
ES2646178T3 (es) 2017-12-12
AU2012261539A1 (en) 2013-06-27
CA2796833C (en) 2020-12-15
CA2796833A1 (en) 2013-06-08
FR2984005A1 (fr) 2013-06-14

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