EP2605256B1 - Operating device of the motor-drive of the contact closing device reset device in an electric protection apparatus and apparatus comprising same - Google Patents

Operating device of the motor-drive of the contact closing device reset device in an electric protection apparatus and apparatus comprising same Download PDF

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Publication number
EP2605256B1
EP2605256B1 EP12306504.7A EP12306504A EP2605256B1 EP 2605256 B1 EP2605256 B1 EP 2605256B1 EP 12306504 A EP12306504 A EP 12306504A EP 2605256 B1 EP2605256 B1 EP 2605256B1
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EP
European Patent Office
Prior art keywords
called
wheel
operating device
pinion
aforesaid
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EP12306504.7A
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German (de)
French (fr)
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EP2605256A1 (en
Inventor
Didier Tamisier
Jean-Pierre Kersusan
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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    • 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
    • H01H3/22—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

Definitions

  • the present invention relates to a device for controlling the device for activating the device for resetting the device for closing contacts in an electrical protection device, said apparatus comprising at least one fixed contact and at least one movable contact carried by a control shaft of poles, said shaft being able to assume a first position in which the contacts are closed and a second position in which the contacts are open, and a resetting device comprising an energy storage device for participating in closing the contacts, said device control device comprising disengaging means able to disengage the motorization device and the reset device at the end of the arming maneuver,
  • EP 2 575 150 A1 describes a control device according to the preamble of claim 1.
  • the present invention aims to further protect the gear train of the drive system, as well as other mechanical parts so as to increase the life of the device.
  • the present invention relates to a control device of the kind mentioned above, this device being characterized in that it comprises means said first able to impose the engaged position to the drive device at the end of the maneuver of closure of the contacts in order to reset the closing device, and said second disengaging means comprising biasing means adapted to return the motorization device M in the disengaged position when the said first means are deactivated, said means said first acting to against the aforementioned means of recall.
  • this device comprises means for maintaining the aforementioned disengagement during substantially the entire closing operation of the control shaft.
  • the aforementioned control shaft is secured to a so-called first gear, said wheel being driven, by means of an intermediate device, by a pinion said first belonging to the drive device in the clutch position of the device control and no longer mechanically connected to this pinion in the disengaged position of said device.
  • the so-called first gear and the so-called first gear are mounted in rotation about two parallel axes with respect to each other.
  • this intermediate device comprises a so-called second gear connected in rotation with a pinion said second, the so-called second gear being able to cooperate with the so-called first pinion of the drive device, while the pinion said second is in engagement with said first gear wheel secured to the control shaft.
  • said means said first comprises means for axially moving said second wheel between a first position in which said drive device is uncoupled from the reset device and a second position in which these two devices are coupled, the displacement of a position to the other of the wheel being effected against the abovementioned return means.
  • said second means comprise means for axially moving the so-called second wheel between a so-called second position in which the drive device is coupled to the reset device and a so-called first position in which these two devices are uncoupled, so-called first means being deactivated.
  • the abovementioned return means of the aforementioned first means comprise at least one compression spring mounted around the axis of the second wheel, and when they are activated to impose the engaged position on the motorization device, said means first compress the spring (s).
  • the so-called second wheel and its associated second pinion gear form only one and the same piece, this assembly sliding axially between the two aforementioned positions.
  • the so-called second wheel is mechanically connected to its associated said second pinion by means of a clutch device allowing said wheel to be displaced with respect to its associated pinion, which in moving, disengages itself from that and thus interrupting the mechanical connection between the so-called first wheel and the so-called first gear of the motorization device.
  • the so-called first aforesaid means comprise a perforated disc integral with said first wheel, said disc cooperating with a protuberance provided on said second wheel to drive the wheel towards one or the other position.
  • the aforementioned clutch holding means during closure of the contacts consist mainly in that the shape and dimensions of the disk and the protrusion are chosen in such a way that the cooperation of these two parts drives the so-called second wheel. in the disengaged position for the duration of the closing of the device.
  • the protuberance comprises a disengaging cone while the open sector disk has an annular sector whose length of the opening substantially corresponds to the closing stroke of the control shaft.
  • the or each aforementioned spring is interposed between a fixed support of the device and the pinion associated with said second wheel.
  • this spring is mounted in a recess of said pinion.
  • the aforesaid disc is secured to a shaft integral in rotation with the control shaft, said disc cooperating with the aforementioned protuberance of the so-called second wheel, which is fixed on the so-called second face of the aforementioned secondary wheel opposed to that located opposite the so-called first wheel.
  • the present invention further relates to an electrical protection apparatus having the aforementioned features taken alone or in combination.
  • this device is a switch or a medium voltage electrical circuit breaker.
  • This resetting device comprises an energy storage device comprising a closing spring 1.
  • This switching device comprises a drive mechanism which can be of any known type having a pole shaft. It may be for example a mechanism of the type described in the document EP-A-0 222 645 , provided with an arming and closure subassembly comprising a closing spring, and an opening subassembly comprising an opening spring.
  • the pole shaft 2 for driving the contacts to the open or closed position is also used to reset the closing spring 1 of the contacts at the end of the closing operation of the contacts.
  • the end of the closing operation of the contacts causes the resetting of an energy storage device, intended to allow maneuvers rapid opening-closing cycles specific to medium voltage protection circuit breakers.
  • This pole shaft 2 at one of its ends, is intended to be driven by the control device of the device, while its opposite end comprises a so-called first wheel 3 intended to cooperate with the motorization device M, this shaft being further mechanically connected between these two ends, to the aforementioned closing spring 1.
  • This so-called first wheel 3, is intended to be rotated by a pinion said first 4 belonging to the motorization device M by means of a device intermediate 5.
  • This intermediate device 5 comprises a so-called secondary wheel 6 and a so-called secondary gear 7, this secondary wheel 6 being intended to be driven by the pinion 4 of the motorization device M, while the so-called secondary pinion 7 integral in rotation with the so-called second wheel 6 cooperates with the so-called first wheel 3, so that in the engaged position, the motorization device M rotates the so-called first wheel 3 and thus the control shaft 2 by means of the wheel said second 6 and said second pinion 7.
  • the so-called first wheel 3 comprises, at the end of a shaft portion 12 integral with the wheel and coaxial with said wheel, an annular sector disk 8 having an opening 8a intended to cooperate with a clutch cone 9
  • This clutch cone is located on the face of the wheel 6 opposite to that facing the so-called first wheel 3, as this is more visible on the wheel.
  • a compression spring 11 is supported by one of its ends, on one side of a fixed support of the apparatus, and by an opposite end on one side of the pinion 7 associated with the secondary wheel 6, said spring being mounted inside said pinion, as this is more visible on the figure 8 .
  • the so-called second wheel 6 and the second said pinion 7 form a one-piece assembly capable of sliding axially between a first position in which the so-called second wheel 6 of the intermediate device 5 is engaged with the pinion said first 4 of the motorization device M and a second position in which these two elements are disengaged relative to each other.
  • the length of the empty portion 8a of the perforated disk 8 corresponds to the closing stroke of the control device.
  • the device is at the end of arming the closing spring.
  • the disc-sector 8 of the wheel 3 cooperates with the protuberance 9 to return the secondary wheel 6 and its associated pinion 7 to the disengaging spring (that is to say towards the top of the figure), position in which the secondary wheel 6 is driven by the pinion 4 of the motorization device.
  • This displacement of the secondary wheel is carried out against the compression spring 11 whose function is to return the secondary wheel 6 to the opposite side to the so-called first wheel 3 (that is to say towards the bottom of the figure 5 ).
  • This position is also illustrated on the figure 11 .
  • the disengaged position is maintained during the entire duration of the closure in that the annular sector 8 of the first wheel 3 no longer cooperates with the clutch cone 9 during all this duration, thus not imposing a clutch, the length of the empty portion 8a of the perforated disk 8 substantially corresponding to the length of the closing stroke.
  • said second wheel may be mechanically connected to its associated pinion by means of a clutch device allowing said wheel to be moved relative to its associated pinion, which in moving, separates from the latter, thus interrupting the mechanical connection between the so-called first wheel and the so-called first gear.
  • This dog device comprises, in a manner known per se, a driving tooth in a claw clutch sleeve.
  • the return spring will act directly on the wheel 6 said second, passing through the pinion 7. It will always be guided by the recess of the pinion 7 which will remain in the geared position on the wheel 3 said first. It suffices to provide on this pinion 7 a shoulder which holds it against the wheel 3.
  • a device for maintaining the clutch during the closing of the device has been made to eliminate the shocks collected by the clutch release gears during the closure of the device, for example slamming, shock loading. tenons, inertia, etc ... as this was the case for an engine with a gear train still engaged with the main shaft of the control device.
  • the present invention therefore makes it possible to improve the mechanical endurance resistance of the parts of the disengagement device of the engine.
  • This device makes it possible to disengage the motorization at the end of arming of the control so as not to damage it prematurely and also to disengage the motorization during the closure of the circuit breaker, so as not to drive the gear train of the engine and damage it and not to disturb the closing of the order.
  • This device uses the property that the gears with a profile of right teeth in involute circles do not transmit axial force. This device does not use the inertia and kinetic energy of the gears of the motorization produced by the speed of rotation of the shaft and the reduction ratio.
  • the spring is slightly compressed in the disengaged position, when the device is in the closed position, the control device being in the armed position, which corresponds to the normal position for a control device on the network, which results in less risk of wear of the spring.
  • the device would remain engaged after a clutch, and it will be noted that it is easier to pass under the effect of the spring from the engaged position to the disengaged position than the opposite. Note finally that the guide of the return spring is better achieved since the latter is naturally guided in the pinion 7.

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  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Description

La présente invention concerne un dispositif de commande du dispositif de motorisation du dispositif de réarmement du dispositif de fermeture des contacts dans un appareil de protection électrique, ledit appareil comportant au moins un contact fixe et au moins un contact mobile porté par un arbre de commande des pôles, ledit arbre pouvant prendre une première position dans laquelle les contacts sont fermés et une seconde position dans laquelle les contacts sont ouverts, et un dispositif de réarmement comportant un dispositif à accumulation d'énergie destiné à participer à la fermeture des contacts, ledit dispositif de commande comportant des moyens de débrayage aptes à désaccoupler le dispositif de motorisation et le dispositif de réarmement à la fin de la manoeuvre d'armement,The present invention relates to a device for controlling the device for activating the device for resetting the device for closing contacts in an electrical protection device, said apparatus comprising at least one fixed contact and at least one movable contact carried by a control shaft of poles, said shaft being able to assume a first position in which the contacts are closed and a second position in which the contacts are open, and a resetting device comprising an energy storage device for participating in closing the contacts, said device control device comprising disengaging means able to disengage the motorization device and the reset device at the end of the arming maneuver,

Dans un type de dispositif tel que celui décrit dans le document EP 1 139 368 , il est nécessaire de débrayer le système de motorisation en fin d'armement pour ne pas le détruire. En effet, dans cette position, la demi-lune de fermeture étant chargée, le système de motorisation ne doit pas transmettre d'effort sur l'ensemble comportant le verrou et la demi-lune, les ressorts de fermeture étant comprimés.In a type of device such as that described in the document EP 1 139 368 , it is necessary to disengage the motorization system at the end of arming to not destroy it. Indeed, in this position, the closing half-moon being loaded, the drive system must not transmit force on the assembly comprising the latch and the half-moon, the closing springs being compressed.

Le document " EP 2 575 150 A1 " décrit un dispositif de commande selon le préambule de la revendication 1.The document " EP 2 575 150 A1 "describes a control device according to the preamble of claim 1.

La présente invention vise à protéger davantage encore le train d'engrenage du système de motorisation, ainsi que les autres pièces mécaniques de manière à augmenter la durée de vie du dispositif.The present invention aims to further protect the gear train of the drive system, as well as other mechanical parts so as to increase the life of the device.

A cet effet, la présente invention a pour objet un dispositif de commande du genre précédemment mentionné, ce dispositif étant caractérisé en ce qu'il comporte des moyens dits premiers aptes à imposer la position embrayée au dispositif de motorisation à la fin de la manoeuvre de fermeture des contacts afin de réaliser le réarmement du dispositif de fermeture, et des moyens de débrayage dits seconds comportant des moyens de rappel aptes à ramener le dispositif de motorisation M en position débrayée lorsque les moyens dits premiers sont désactivés, lesdits moyens dits premiers agissant à l'encontre des moyens de rappels précités.For this purpose, the present invention relates to a control device of the kind mentioned above, this device being characterized in that it comprises means said first able to impose the engaged position to the drive device at the end of the maneuver of closure of the contacts in order to reset the closing device, and said second disengaging means comprising biasing means adapted to return the motorization device M in the disengaged position when the said first means are deactivated, said means said first acting to against the aforementioned means of recall.

Selon une caractéristique particulière, ce dispositif comporte des moyens pour maintenir le débrayage précité pendant sensiblement toute la manoeuvre de fermeture de l'arbre de commande.According to a particular characteristic, this device comprises means for maintaining the aforementioned disengagement during substantially the entire closing operation of the control shaft.

Selon une autre caractéristique, c'est l'arbre de commande précité qui commande le dispositif de réarmement précité.According to another characteristic, it is the aforementioned control shaft which controls the aforementioned rearming device.

Selon une autre caractéristique, l'arbre de commande précité est solidarisé à une roue dentée dite première, ladite roue étant entraînée, au moyen d'un dispositif intermédiaire, par un pignon dit premier appartenant au dispositif de motorisation en position d'embrayage du dispositif de commande et n'étant plus relié mécaniquement à ce pignon en position débrayée dudit dispositif.According to another characteristic, the aforementioned control shaft is secured to a so-called first gear, said wheel being driven, by means of an intermediate device, by a pinion said first belonging to the drive device in the clutch position of the device control and no longer mechanically connected to this pinion in the disengaged position of said device.

Selon une autre caractéristique, la roue dentée dite première ainsi que le pignon dit premier sont montés en rotation autour de deux axes parallèles l'un par rapport à l'autre.According to another characteristic, the so-called first gear and the so-called first gear are mounted in rotation about two parallel axes with respect to each other.

Selon une autre caractéristique, ce dispositif intermédiaire comporte une roue dentée dite seconde solidarisée en rotation avec un pignon dit second, la roue dentée dite seconde étant apte à coopérer avec le pignon dit premier du dispositif de motorisation, tandis que le pignon dit second est en engagement avec la roue dentée dite première solidaire de l'arbre de commande.According to another characteristic, this intermediate device comprises a so-called second gear connected in rotation with a pinion said second, the so-called second gear being able to cooperate with the so-called first pinion of the drive device, while the pinion said second is in engagement with said first gear wheel secured to the control shaft.

Selon une autre caractéristique, ces moyens dits premiers comportent des moyens pour déplacer axialement la roue dite seconde entre une première position dans laquelle ce dispositif de motorisation est désaccouplé du dispositif de réarmement et une seconde position dans laquelle ces deux dispositifs sont accouplés, le déplacement d'une position à l'autre de la roue s'effectuant à l'encontre des moyens de rappel précités.According to another characteristic, said means said first comprises means for axially moving said second wheel between a first position in which said drive device is uncoupled from the reset device and a second position in which these two devices are coupled, the displacement of a position to the other of the wheel being effected against the abovementioned return means.

Selon une autre caractéristique, ces moyens dits seconds comportent des moyens pour déplacer axialement la roue dite seconde entre une position dite seconde dans laquelle le dispositif de motorisation est accouplé au dispositif de réarmement et une position dite première dans laquelle ces deux dispositifs sont désaccouplés, les moyens dits premiers étant désactivés.According to another characteristic, said second means comprise means for axially moving the so-called second wheel between a so-called second position in which the drive device is coupled to the reset device and a so-called first position in which these two devices are uncoupled, so-called first means being deactivated.

Selon une autre caractéristique, les moyens de rappel précités des premiers moyens précités comportent au moins un ressort de compression monté autour de l'axe de la seconde roue, et lors de leur activation pour imposer la position embrayée au dispositif de motorisation, les moyens dits premiers compriment le(s) ressort(s).According to another characteristic, the abovementioned return means of the aforementioned first means comprise at least one compression spring mounted around the axis of the second wheel, and when they are activated to impose the engaged position on the motorization device, said means first compress the spring (s).

Selon une autre caractéristique, la roue dite seconde et son pignon dit second associé ne forment qu'une seule et même pièce, cet ensemble coulissant axialement entre les deux positions précitées.According to another characteristic, the so-called second wheel and its associated second pinion gear form only one and the same piece, this assembly sliding axially between the two aforementioned positions.

Selon une autre caractéristique, la roue dite seconde est reliée mécaniquement à son pignon associé dit second au moyen d'un dispositif à crabot permettant à ladite roue d'être déplacée par rapport à son pignon associé, laquelle en se déplaçant, se désolidarise de celui-ci interrompant ainsi la liaison mécanique entre la roue dite première et le pignon dit premier du dispositif de motorisation.According to another characteristic, the so-called second wheel is mechanically connected to its associated said second pinion by means of a clutch device allowing said wheel to be displaced with respect to its associated pinion, which in moving, disengages itself from that and thus interrupting the mechanical connection between the so-called first wheel and the so-called first gear of the motorization device.

Selon une autre caractéristique, les moyens dits premiers précités comportent un disque ajouré solidaire de la roue dite première, ledit disque coopérant avec une protubérance prévue sur la roue dite seconde pour entraîner la roue vers l'une ou l'autre position.According to another characteristic, the so-called first aforesaid means comprise a perforated disc integral with said first wheel, said disc cooperating with a protuberance provided on said second wheel to drive the wheel towards one or the other position.

Selon une autre caractéristique, les moyens de maintien du débrayage précités pendant la fermeture des contacts consistent principalement en ce que la forme et les dimensions du disque et de la protubérance sont choisies de telle manière que la coopération de ces deux pièces entraîne la roue dite seconde en position débrayée pendant toute la durée de la fermeture de l'appareil.According to another characteristic, the aforementioned clutch holding means during closure of the contacts consist mainly in that the shape and dimensions of the disk and the protrusion are chosen in such a way that the cooperation of these two parts drives the so-called second wheel. in the disengaged position for the duration of the closing of the device.

Selon une autre caractéristique, la protubérance comporte un cône de débrayage tandis que le disque à secteur ajouré comporte un secteur annulaire dont la longueur de l'ouverture correspond sensiblement à la course de fermeture de l'arbre de commande.According to another characteristic, the protuberance comprises a disengaging cone while the open sector disk has an annular sector whose length of the opening substantially corresponds to the closing stroke of the control shaft.

Selon une autre caractéristique, le ou chaque ressort précité est interposé entre un support fixe de l'appareil et le pignon associé à la roue dite seconde.According to another characteristic, the or each aforementioned spring is interposed between a fixed support of the device and the pinion associated with said second wheel.

Selon une autre caractéristique, ce ressort est monté dans un évidement dudit pignon.According to another characteristic, this spring is mounted in a recess of said pinion.

Selon une autre caractéristique, le disque précité est solidaire d'un arbre solidaire en rotation de l'arbre de commande, ledit disque coopérant avec la protubérance précitée de la roue dite seconde, laquelle étant fixée sur la face dite seconde de la roue secondaire précitée opposée à celle située en regard de la roue dite première.According to another characteristic, the aforesaid disc is secured to a shaft integral in rotation with the control shaft, said disc cooperating with the aforementioned protuberance of the so-called second wheel, which is fixed on the so-called second face of the aforementioned secondary wheel opposed to that located opposite the so-called first wheel.

La présente invention a encore pour objet un appareil de protection électrique comportant les caractéristiques précédemment mentionnées prises seules ou en combinaison.The present invention further relates to an electrical protection apparatus having the aforementioned features taken alone or in combination.

Selon une caractéristique particulière, cet appareil est un interrupteur ou un disjoncteur électrique moyenne tension.According to a particular characteristic, this device is a switch or a medium voltage electrical circuit breaker.

Mais d'autres avantages et caractéristiques de l'invention apparaîtront mieux dans la description détaillée qui suit et se réfère aux dessins annexés donnés uniquement à titre d'exemple et dans lesquels :

  • La figure 1 est une vue en perspective d'une partie du dispositif de commande des contacts dans un appareillage électrique de coupure multipolaire moyenne tension comportant un dispositif de motorisation du dispositif de réarmement du dispositif de fermeture des contacts ainsi qu'un dispositif de débrayage, selon une réalisation particulière de l'invention,
  • La figure 2 est une vue en perspective de la roue dite première et du disque d'embrayage du dispositif selon l'invention,
  • La figure 3 est une vue en perspective de le roue dite seconde dudit dispositif, comprenant le pignon d'entraînement de la roue dite première,
  • La figure 4 est une vue de côté du dispositif de la figure 1, ce dispositif de commande des contacts étant dans une position fermée, en cours d'armement, le dispositif de motorisation étant en fin de position embrayée,
  • La figure 5 est une vue de dessus de la figure précédente,
  • La figure 6 est une vue partielle de la figure 4, illustrant plus particulièrement deux roues de la figure précédente,
  • Les figures 7,8 et 9 sont des vues identiques respectivement aux figures 4,5 et 6, le dispositif de commande étant dans la position dite armée, au début de la position (ou course) du débrayage maintenu par le ressort de rappel, la commande étant alors prête à fermer l'appareil,
  • Les figures 10 et 11 illustrent, dans une vue de côté, ce dispositif de débrayage selon l'invention, respectivement dans une position débrayée du dispositif et dans une position embrayée,
But other advantages and features of the invention will become more apparent in the detailed description which follows and refers to the accompanying drawings given solely by way of example and in which:
  • The figure 1 is a perspective view of a part of the contact control device in a medium-voltage multipole power switchgear comprising a device for activating the device for resetting the device for closing the contacts and a disengaging device, according to an embodiment particular of the invention,
  • The figure 2 is a perspective view of the so-called first wheel and the clutch disc of the device according to the invention,
  • The figure 3 is a perspective view of the so-called second wheel of said device, comprising the driving pinion of the so-called first wheel,
  • The figure 4 is a side view of the device of the figure 1 , this contact control device being in a closed position during arming, the motorization device being at the end of the engaged position,
  • The figure 5 is a view from above of the previous figure,
  • The figure 6 is a partial view of the figure 4 , illustrating more particularly two wheels of the preceding figure,
  • The figures 7.8 and 9 are identical views respectively to figures 4 , 5 and 6 , the control device being in the so-called armed position, at the beginning of the position (or stroke) of the clutch held by the return spring, the command then being ready to close the apparatus,
  • The Figures 10 and 11 illustrate, in a side view, this disengaging device according to the invention, respectively in a disengaged position of the device and in an engaged position,

Sur la figure 1, on voit un dispositif de motorisation M du dispositif de réarmement R du dispositif de fermeture des contacts appartenant à un appareil électrique de coupure multipolaire moyenne tension. Ce dispositif de réarmement comporte un dispositif à accumulation d'énergie comportant un ressort de fermeture 1.
Cet appareil de coupure comporte un mécanisme d'entraînement qui peut être de tout type connu comportant un arbre des pôles. Il peut s'agir par exemple d'un mécanisme du type décrit dans le document EP-A-0 222 645 , muni d'un sous-ensemble d'armement et de fermeture comportant un ressort de fermeture, et d'un sous-ensemble d'ouverture comportant un ressort d'ouverture. Dans cette réalisation de l'invention illustrée sur la figure 1, l'arbre des pôles 2 permettant l'entraînement des contacts vers la position d'ouverture ou de fermeture, est également utilisé pour réaliser le réarmement du ressort de fermeture 1 des contacts, en fin de manoeuvre de fermeture des contacts.
Dans cette réalisation particulière, la fin de l'opération de fermeture des contacts entraîne le réarmement d'un dispositif à accumulation d'énergie, destiné à permettre les manoeuvres des cycles rapides d'ouverture-fermeture propres aux disjoncteurs de protection Moyenne Tension.
Cet arbre des pôles 2, par l'une de ses extrémités, est destiné à être entraîné par le dispositif de commande de l'appareil, tandis que son extrémité opposée comporte une roue dite première 3 destinée à coopérer avec le dispositif de motorisation M, cet arbre étant en outre relié mécaniquement entre ces deux extrémités, au ressort de fermeture précité 1.
Cette roue dite première 3, est destinée à être entraînée en rotation par un pignon dit premier 4 appartenant au dispositif de motorisation M au moyen d'un dispositif intermédiaire 5. Ce dispositif intermédiaire 5 comporte une roue dite secondaire 6 et un pignon dit secondaire 7, cette roue secondaire 6 étant destinée à être entraînée par le pignon 4 du dispositif de motorisation M, tandis que le pignon dit secondaire 7 solidaire en rotation de la roue dite seconde 6, coopère avec la roue dite première 3, de manière qu'en position embrayée, le dispositif de motorisation M entraîne en rotation la roue dite première 3 et donc l'arbre de commande 2 par l'intermédiaire de la roue dite seconde 6 et du pignon dit second 7.
Selon l'invention, et tel qu'illustré sur la figure 2, la roue dite première 3 comporte, à l'extrémité d'une partie d'arbre 12 solidaire de la roue et coaxiale avec ladite roue, un disque-secteur annulaire 8 comportant une ouverture 8a, destiné à coopérer avec un cône d'embrayage 9 prévu sur la roue dite seconde 6. Ce cône d'embrayage est situé sur la face de la roue 6 opposée à celle se trouvant en regard de la roue dite première 3, tel que ceci est plus visible sur la figure 6.
Un ressort de compression 11 est en appui par l'une de ses extrémités, sur une face d'un support fixe de l'appareil, et par une extrémité opposée sur une face du pignon 7 associé à la roue secondaire 6, ledit ressort étant monté à l'intérieur dudit pignon, tel que ceci est plus visible sur la figure 8.On the figure 1 , there is a motorization device M of the resetting device R of the contact closure device belonging to a medium-voltage multipole electrical breaking device. This resetting device comprises an energy storage device comprising a closing spring 1.
This switching device comprises a drive mechanism which can be of any known type having a pole shaft. It may be for example a mechanism of the type described in the document EP-A-0 222 645 , provided with an arming and closure subassembly comprising a closing spring, and an opening subassembly comprising an opening spring. In this embodiment of the invention illustrated on the figure 1 , the pole shaft 2 for driving the contacts to the open or closed position is also used to reset the closing spring 1 of the contacts at the end of the closing operation of the contacts.
In this particular embodiment, the end of the closing operation of the contacts causes the resetting of an energy storage device, intended to allow maneuvers rapid opening-closing cycles specific to medium voltage protection circuit breakers.
This pole shaft 2, at one of its ends, is intended to be driven by the control device of the device, while its opposite end comprises a so-called first wheel 3 intended to cooperate with the motorization device M, this shaft being further mechanically connected between these two ends, to the aforementioned closing spring 1.
This so-called first wheel 3, is intended to be rotated by a pinion said first 4 belonging to the motorization device M by means of a device intermediate 5. This intermediate device 5 comprises a so-called secondary wheel 6 and a so-called secondary gear 7, this secondary wheel 6 being intended to be driven by the pinion 4 of the motorization device M, while the so-called secondary pinion 7 integral in rotation with the so-called second wheel 6 cooperates with the so-called first wheel 3, so that in the engaged position, the motorization device M rotates the so-called first wheel 3 and thus the control shaft 2 by means of the wheel said second 6 and said second pinion 7.
According to the invention, and as illustrated on the figure 2 the so-called first wheel 3 comprises, at the end of a shaft portion 12 integral with the wheel and coaxial with said wheel, an annular sector disk 8 having an opening 8a intended to cooperate with a clutch cone 9 This clutch cone is located on the face of the wheel 6 opposite to that facing the so-called first wheel 3, as this is more visible on the wheel. figure 6 .
A compression spring 11 is supported by one of its ends, on one side of a fixed support of the apparatus, and by an opposite end on one side of the pinion 7 associated with the secondary wheel 6, said spring being mounted inside said pinion, as this is more visible on the figure 8 .

Selon la réalisation de l'invention illustrée sur les figures, la roue dite seconde 6 et le pignon dit second 7 forment un ensemble monobloc apte à coulisser axialement entre une première position dans laquelle la roue dite seconde 6 du dispositif intermédiaire 5 est engagé avec le pignon dit premier 4 du dispositif de motorisation M et une seconde position dans laquelle ces deux éléments sont désengagés l'un par rapport à l'autre.According to the embodiment of the invention illustrated in the figures, the so-called second wheel 6 and the second said pinion 7 form a one-piece assembly capable of sliding axially between a first position in which the so-called second wheel 6 of the intermediate device 5 is engaged with the pinion said first 4 of the motorization device M and a second position in which these two elements are disengaged relative to each other.

Selon une réalisation particulière de l'invention, la longueur de la partie vide 8a du disque ajouré 8 correspond à la course de fermeture du dispositif de commande.According to a particular embodiment of the invention, the length of the empty portion 8a of the perforated disk 8 corresponds to the closing stroke of the control device.

Le fonctionnement du dispositif de débrayage selon la réalisation illustrée va être décrit dans ce qui suit en référence aux figures 4 à 11.The operation of the disengaging device according to the illustrated embodiment will be described in the following with reference to Figures 4 to 11 .

Sur les figures 4,5 et 6, le dispositif est en fin d'armement du ressort de fermeture. Dans cette position, le disque-secteur 8 de la roue 3 coopère avec la protubérance 9 pour rappeler la roue secondaire 6 et son pignon associé 7 vers le ressort de débrayage (c'est-à-dire vers le haut de la figure), position dans laquelle la roue secondaire 6 est entraînée par le pignon 4 du dispositif de motorisation. Ce déplacement de la roue secondaire est réalisé à l'encontre du ressort de compression 11 dont la fonction est de rappeler la roue secondaire 6 vers le côté opposé à la roue dite première 3 (c'est-à-dire vers le bas de la figure 5). Cette position est également illustrée sur la figure 11.On the figures 4 , 5 and 6 , the device is at the end of arming the closing spring. In this position, the disc-sector 8 of the wheel 3 cooperates with the protuberance 9 to return the secondary wheel 6 and its associated pinion 7 to the disengaging spring (that is to say towards the top of the figure), position in which the secondary wheel 6 is driven by the pinion 4 of the motorization device. This displacement of the secondary wheel is carried out against the compression spring 11 whose function is to return the secondary wheel 6 to the opposite side to the so-called first wheel 3 (that is to say towards the bottom of the figure 5 ). This position is also illustrated on the figure 11 .

Sur les figures 7 à 9, après un déplacement dans le sens horaire de l'arbre de commande 2, et ainsi de la roue dite première 3, le dispositif de commande est amené dans une position armée prête à fermer. Dans cette position, la roue secondaire 6 n'est plus rappelée vers le haut par le disque-secteur 8 car celui-ci s'est escamoté et la protubérance de la roue dite seconde 6 a été amenée dans l'ouverture 8a du disque, grâce au ressort agissant sur la roue secondaire. Cette position est également illustrée sur la figure 10.On the Figures 7 to 9 after a clockwise movement of the control shaft 2, and thus the so-called first wheel 3, the control device is brought into an armed position ready to close. In this position, the secondary wheel 6 is no longer raised upwards by the sector disk 8 because the latter has retracted and the protuberance of the so-called second wheel 6 has been brought into the opening 8a of the disk, thanks to the spring acting on the secondary wheel. This position is also illustrated on the figure 10 .

Pendant le mouvement de fermeture des contacts de l'appareil, la position débrayée est maintenue pendant toute la durée de la fermeture par le fait que le secteur annulaire 8 de la première roue 3 ne coopère plus avec le cône d'embrayage 9 pendant toute cette durée, n'imposant donc pas d'embrayage, la longueur de la partie vide 8a du disque ajouré 8 correspondant sensiblement à la longueur de la course de fermeture.During the closing movement of the contacts of the device, the disengaged position is maintained during the entire duration of the closure in that the annular sector 8 of the first wheel 3 no longer cooperates with the clutch cone 9 during all this duration, thus not imposing a clutch, the length of the empty portion 8a of the perforated disk 8 substantially corresponding to the length of the closing stroke.

On notera que selon une autre réalisation non illustrée, la roue dite seconde pourra être reliée mécaniquement à son pignon associé au moyen d'un dispositif à crabot permettant à ladite roue d'être déplacée par rapport à son pignon associé, laquelle en se déplaçant, se désolidarise de celui-ci, interrompant ainsi la liaison mécanique entre la roue dite première et le pignon dit premier. Ce dispositif à crabot comporte de manière connue en soi une dent d'entraînement dans un manchon d'embrayage à griffes.
Dans ce cas le ressort de rappel agira directement sur la roue 6 dite seconde, en passant au travers du pignon 7. Il sera toujours guidé par l'évidement de ce pignon 7 qui restera en position engrenée sur la roue 3 dite première. Il suffit de prévoir sur ce pignon 7 un épaulement qui le maintienne contre la roue 3.Note that according to another embodiment not illustrated, said second wheel may be mechanically connected to its associated pinion by means of a clutch device allowing said wheel to be moved relative to its associated pinion, which in moving, separates from the latter, thus interrupting the mechanical connection between the so-called first wheel and the so-called first gear. This dog device comprises, in a manner known per se, a driving tooth in a claw clutch sleeve.
In this case the return spring will act directly on the wheel 6 said second, passing through the pinion 7. It will always be guided by the recess of the pinion 7 which will remain in the geared position on the wheel 3 said first. It suffices to provide on this pinion 7 a shoulder which holds it against the wheel 3.

On a donc réalisé grâce à l'invention, un dispositif de maintien du débrayage durant la fermeture de l'appareil permettant de supprimer les chocs encaissés par les pignons de débrayage durant la fermeture de l'appareil, par exemple les claquements, sollicitations par chocs des tenons, inertie, etc...comme ceci était le cas pour une motorisation avec un train d'engrenage toujours en prise avec l'arbre principal du dispositif de commande.Thus, thanks to the invention, a device for maintaining the clutch during the closing of the device has been made to eliminate the shocks collected by the clutch release gears during the closure of the device, for example slamming, shock loading. tenons, inertia, etc ... as this was the case for an engine with a gear train still engaged with the main shaft of the control device.

La présente invention permet donc d'améliorer la tenue en endurance mécanique des pièces du dispositif de débrayage de la motorisation.The present invention therefore makes it possible to improve the mechanical endurance resistance of the parts of the disengagement device of the engine.

Ce dispositif permet de débrayer la motorisation en fin d'armement de la commande pour ne pas l'endommager prématurément et également de débrayer la motorisation durant la fermeture du disjoncteur, pour ne pas entraîner le train d'engrenages de la motorisation et le détériorer et pour ne pas perturber la fermeture de la commande. Ce dispositif utilise la propriété que les engrenages à profil de dentures droites en développantes de cercles ne transmettent pas d'effort axial.
Ce dispositif n'utilise pas l'inertie et l'énergie cinétique des engrenages de la motorisation produite par la vitesse de rotation de l'arbre et le rapport de réduction.This device makes it possible to disengage the motorization at the end of arming of the control so as not to damage it prematurely and also to disengage the motorization during the closure of the circuit breaker, so as not to drive the gear train of the engine and damage it and not to disturb the closing of the order. This device uses the property that the gears with a profile of right teeth in involute circles do not transmit axial force.
This device does not use the inertia and kinetic energy of the gears of the motorization produced by the speed of rotation of the shaft and the reduction ratio.

On notera parmi les autres avantages de l'invention, le fait que le ressort est peu comprimé en position débrayé, lorsque l'appareil est en position fermée, le dispositif de commande étant en position armée, ce qui correspond à la position normale pour un appareil de commande sur le réseau, d'où il résulte des risques d'usure moindres du ressort.
D'autre part, si malgré tout le ressort ne fonctionnait plus correctement, le dispositif resterait embrayé après un débrayage, et l'on notera qu' il est plus aisé de passer sous l'effet du ressort de la position embrayée à la position débrayée que l'inverse. On notera enfin que le guidage du ressort de rappel est mieux réalisé puisque ce dernier se trouve naturellement guidé dans le pignon 7.It will be noted among the other advantages of the invention, the fact that the spring is slightly compressed in the disengaged position, when the device is in the closed position, the control device being in the armed position, which corresponds to the normal position for a control device on the network, which results in less risk of wear of the spring.
On the other hand, if despite all the spring was no longer working properly, the device would remain engaged after a clutch, and it will be noted that it is easier to pass under the effect of the spring from the engaged position to the disengaged position than the opposite. Note finally that the guide of the return spring is better achieved since the latter is naturally guided in the pinion 7.

Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple.Of course, the invention is not limited to the embodiment described and illustrated which has been given by way of example.

Claims (19)

  1. Operating device of the motor-drive (M) of the contact closing device reset device (R) in an electric protection apparatus, said apparatus comprising at least one fixed contact and at least one moving contact carried by a pole control shaft (2), said shaft (2) being able to take up a first position in which the contacts are closed and a second position in which the contacts are open, and a reset device (R) comprising an energy storage device (1) intended to participate in the closing of the contacts, said operating device comprising disengaging means capable of uncoupling the motor-drive (M) and the reset device (R) at the end of the reset operation,
    characterized in that said operating device comprises so-called first means (3, 6, 8, 9) capable of imposing the engaged position on the motor-drive at the end of the contact closing operation so as to reset the closing device, and so-called second disengaging means (11) comprising return means capable of bringing the motor-drive (M) into the disengaged position when the so-called first means are deactivated, said so-called first means acting counter to the aforesaid return means, and in that said first (3, 6, 8, 9) and second (11) means exert axial forces on a toothed wheel (6) which is rotably integral with the control shaft (2) so as to displace the latter in an axial manner between a first position in which the toothed wheel (6) is driven by the motor-drive (M) and a second position in which this wheel (6) is no longer driven by said motor-drive (M).
  2. Operating device according to Claim 1, characterized in that said operating device comprises means (8, 9) to maintain the aforesaid disengaging during approximately the entire closing operation of the control shaft (2).
  3. Operating device according to Claim 1 or 2, characterized in that the aforesaid control shaft (2) controls the aforesaid reset device.
  4. Operating device according to any one of Claims 1 to 3, characterized in that the aforesaid control shaft (2) is interlocked with a so-called first toothed wheel (3), said wheel being driven, by means of an intermediate device (5), by a so-called first pinion (4) belonging to the motor-drive (M) in the engaging position of the operating device and no longer being connected mechanically to said pinion (4) in the disengaged position of said device.
  5. Operating device according to Claim 4, characterized in that the so-called first toothed wheel (3) as well as the so-called first pinion (4) are mounted so as to be rotatable about two axes which are parallel to each other.
  6. Operating device according to Claim 4 or 5, characterized in that said intermediate device (5) comprises a so-called second toothed wheel (6) rotatably interlocked with a so-called second pinion (7), the so-called second toothed wheel (6) being capable of cooperating with the so-called first pinion (4) of the motor-drive (M), whilst the so-called second pinion (7) is in engagement with the so-called first toothed wheel (3) which is integral with the control shaft (2).
  7. Operating device according to Claim 6, characterized in that said so-called first means (3, 6, 8, 9) comprise means for displacing the so-called second wheel (6) in an axial manner between a first position in which said motor-drive (M) is uncoupled from the reset device (R) and a second position in which said two devices are coupled together, the displacement from one position to the other of the wheel (6) being carried out counter to the aforesaid return means (11).
  8. Operating device according to Claim 6 or 7, characterized in that said so-called second means (11) comprise means for displacing the so-called second wheel (6) in an axial manner between a so-called second position in which the motor-drive is coupled to the reset device (R) and a so-called first position in which said two devices are uncoupled from each other, the so-called first means being deactivated.
  9. Operating device according to any one of Claims 6 to 8, characterized in that the aforesaid return means (11) of the aforesaid first means comprise at least one compression spring mounted about the axis of the second wheel (6), and in that during the activation thereof to impose the disengaged position on the motor-drive (M), the so-called first means (3, 6, 8, 9) compress the spring or springs (11).
  10. Operating device according to any one of Claims 6 to 9, characterized in that the so-called second wheel (6) and the so-called second associated pinion (7) thereof only form one and the same part, said assembly sliding axially between the two aforesaid positions.
  11. Operating device according to any one of Claims 6 to 9, characterized in that the so-called second wheel (6) is connected mechanically to the so-called second pinion (7) associated therewith by means of a clutch device (10) allowing said wheel (6) to be displaced with regard to the pinion (7) associated therewith, which, when being displaced, becomes unlocked from said pinion thus interrupting the mechanical connection between the so-called first wheel (3) and the so-called first pinion (4) of the motor-drive (M).
  12. Operating device according to any one of Claims 7 to 11, characterized in that the aforesaid so-called first means comprise a partly open disc (8) integral with the so-called first wheel (3), said disc cooperating with a protrusion (9) provided on the so-called second wheel (6) in order to drive the wheel toward the one or the other position.
  13. Operating device according to Claims 2 and 12, characterized in that the means for maintaining the aforesaid disengaging during the closing of the contacts consist principally in that the form and dimensions of the disc and of the protrusion are chosen in such a manner that the cooperation between said two parts drives the so-called second wheel (6) in the disengaged position during the entire duration of the closing of the apparatus.
  14. Operating device according to Claim 12 or 13, characterized in that the protrusion (9) comprises a clutch cone whilst the disc (8) with the partly open sector comprises a ring-shaped sector, the length of the opening (8a) of which corresponds approximately to the closing path of the control shaft (2).
  15. Operating device according to any one of Claims 9 to 14, characterized in that the aforesaid spring or each aforesaid spring (11) is interposed between a fixed apparatus support and the pinion (7) associated with the so-called second wheel (6).
  16. Operating device according to Claim 15, characterized in that said spring (11) is mounted in a recess (7a) of said pinion (7).
  17. Operating device according to any one of Claims 12 to 16, characterized in that the aforesaid disc (8) is integral with a shaft which is rotatably integral with the control shaft (2), said disc (8) cooperating with the aforesaid protrusion (9) of the so-called second wheel (6), which is fixed on the face of the aforesaid second wheel (6) opposite to the one located facing the so-called first wheel (3).
  18. Electric protection apparatus, characterized in that said electric protection apparatus comprises an operating device according to any one of the preceding claims.
  19. Electric protection apparatus according to Claim 18, characterized in that said electric protection apparatus is a medium voltage electric switch or circuit-breaker.
EP12306504.7A 2011-12-16 2012-12-03 Operating device of the motor-drive of the contact closing device reset device in an electric protection apparatus and apparatus comprising same Active EP2605256B1 (en)

Applications Claiming Priority (1)

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FR1103882A FR2984589A1 (en) 2011-12-16 2011-12-16 DEVICE FOR CONTROLLING THE MOTORIZATION OF THE RESET DEVICE OF THE DEVICE FOR CLOSING CONTACTS IN AN ELECTRICAL PROTECTION DEVICE AND APPARATUS COMPRISING IT

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US9443668B2 (en) * 2014-06-12 2016-09-13 Eaton Corporation Electrical switching apparatus, and stored energy assembly and torque regulator assembly therefor
CN105304362B (en) * 2014-07-14 2017-09-22 亚洲电力设备(深圳)股份有限公司 The major loop operating mechanism of solid-state insulated switchgear
CN106409547B (en) * 2015-07-31 2018-12-21 伊顿电力设备有限公司 Grounding switch operating device
DE102016215888A1 (en) * 2016-08-24 2018-03-01 Siemens Aktiengesellschaft Coupling device and method for coupling and decoupling a tensioning gear of a circuit breaker

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EP2575150A1 (en) * 2011-09-30 2013-04-03 Schneider Electric Industries SAS Motorization disengagement device of the reset device of the contact closing device in an electric protection apparatus and apparatus comprising same

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FR2558986B1 (en) * 1984-01-30 1986-11-21 Merlin Gerin DEVICE FOR CONTROLLING AN ELECTRIC CIRCUIT BREAKER
FR2589626B1 (en) 1985-10-31 1989-03-03 Merlin Gerin CONTROL MECHANISM OF A CIRCUIT BREAKER EQUIPPED WITH AN ENERGY ACCUMULATING SYSTEM
FR2807204B1 (en) 2000-03-31 2002-05-24 Schneider Electric Ind Sa ELECTRIC MULTIPOLAR CUTTING APPARATUS PROVIDED WITH A DRIVE MECHANISM AND CUTTING MODULES
KR101050548B1 (en) * 2007-03-27 2011-07-19 미쓰비시덴키 가부시키가이샤 Shaving mechanism of switchgear
FR2923075B1 (en) * 2007-10-29 2009-12-25 Areva T & D Ag ACTUATOR OF A SWITCH COMPRISING A FREEWHEEL COUPLING DEVICE

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EP2575150A1 (en) * 2011-09-30 2013-04-03 Schneider Electric Industries SAS Motorization disengagement device of the reset device of the contact closing device in an electric protection apparatus and apparatus comprising same

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CN103165299B (en) 2017-06-09
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FR2984589A1 (en) 2013-06-21
ES2602158T3 (en) 2017-02-17

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