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EP1130610B1 - Device for operating mechanism of an electrical apparatus and operating mechanism with such a device - Google Patents

Device for operating mechanism of an electrical apparatus and operating mechanism with such a device Download PDF

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Publication number
EP1130610B1
EP1130610B1 EP01400519A EP01400519A EP1130610B1 EP 1130610 B1 EP1130610 B1 EP 1130610B1 EP 01400519 A EP01400519 A EP 01400519A EP 01400519 A EP01400519 A EP 01400519A EP 1130610 B1 EP1130610 B1 EP 1130610B1
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EP
European Patent Office
Prior art keywords
spring
extremity
damper
shaft
return
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.)
Expired - Lifetime
Application number
EP01400519A
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German (de)
French (fr)
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EP1130610A1 (en
Inventor
Andreas Ludwig
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Grid Solutions SAS
Original Assignee
Areva T&D SAS
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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
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • 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
    • H01H3/605—Mechanical arrangements for preventing or damping vibration or shock making use of a fluid damper

Definitions

  • the invention relates to a device for equipping a spring control mechanism of a power electrical equipment, such as for example a medium or high voltage circuit breaker.
  • this kind of electrical equipment conventionally comprises a switching module controlled by a control mechanism where a trigger-triggering arrangement is more specifically responsible for switching the module from one position to another by acting on it by means of a intermediate a mechanical control link to turn it on or off and therefore on and off and another arrangement is used to arm the previous.
  • a control mechanism of this kind is described in particular in a patent European 651409 in connection with the figure 1 of this patent. It comprises in particular a trigger-release arrangement including a main actuating shaft, said switching-on, on which are fixed various control levers which notably allow this shaft to act on the module and to be rotated under the control. action of a cam in a first predetermined direction, from a starting position for which the module is in a first state to a position for which the module reaches a second state. This rotation is effected by pressing the cam on one of the levers that carries the main shaft and against a return spring which is adapted to rotate the main shaft in the opposite direction of the previous one and which acts by means of intermediate of another lever.
  • This type of spring-loaded control mechanism has the disadvantage of involving a relatively large number of different parts which constitute functional assemblies that combine in a relatively complex manner, the commissioning and maintenance of which are difficult to carry out and therefore too much expensive.
  • the invention proposes a device for spring-loaded control mechanism of a power electrical equipment, in particular medium or high voltage, in which at least one switching module is switched from one position to another via a layout trigger-actuator including a main operating shaft on which are fixed control levers allowing this shaft to be rotated by drive means in a first predetermined direction, from a first position for which the module is in a first state to a second position in which the module is brought into a second state, and against a return spring adapted to rotate the main shaft in the opposite direction to bring the module of the second state to the first state. state.
  • the arrangement further comprises a limit damper acting on the return of the shaft in first position under the action of the return spring.
  • the device is as defined in claim 1.
  • the invention also proposes a control mechanism for electrical equipment of power, in particular medium or high voltage, in which at least one switching module is switched from one position to another by means of a triggering-triggering arrangement including an operating shaft on which are fixed control levers allowing this shaft to be rotated in a first direction determined by the action of a rotary cam that presses on one of the levers, said engagement-triggering said rotation being effected from a first position for which the module is in a first state to a second position in which the module is brought into a second state, and against a return spring capable of making turn the main shaft in the opposite direction to return the module of the second state to the first state.
  • a triggering-triggering arrangement including an operating shaft on which are fixed control levers allowing this shaft to be rotated in a first direction determined by the action of a rotary cam that presses on one of the levers, said engagement-triggering said rotation being effected from a first position for which the module is in a first state to a second position in which the module is brought into a
  • the rotation in the opposite direction is only possible after erasing a retaining pawl which retains the shaft in its second position by acting on the trigger-release lever, under the control of triggering means, when the cam has become inoperative because of its rotation and profile.
  • the arrangement further comprises a limit damper acting on the return of the shaft in first position under the action of the return spring.
  • said mechanism is as defined in claim 6.
  • the figure 1 presents a diagram of a trigger-trigger arrangement that comprises a known power equipment control mechanism.
  • the figure 2 shows a diagram of an engagement-trigger arrangement comprising a control mechanism similar to that mentioned above which is equipped with a device according to the invention.
  • the figure 3 presents a section of a device constituted by a subset of return and damping, according to the invention.
  • the known spring control mechanism of which one of the main arrangements is schematized on the figure 1 , corresponds to the one described in connection with the figure 1 demand European 651409 . It is intended to equip a power electrical equipment and in particular a medium or high voltage circuit breaker, comprising a power switching module 1 having a trigger-trigger arrangement which ensures more particularly the power on and off.
  • this arrangement has means, schematized by a mechanical control link L, allowing it to act on the switching module 1, symbolized by a contact which is shown in the open position on the figure 1 and in the closed position on the figure 2 .
  • the control link L is articulated on a lever 2 laterally carried by a main operating shaft 3 which rotates in a limited manner, in one direction to allow the passage of a first position or starting position, for which the switching module 1 is in a first state, at a second position, for which this module is brought into a second state, or in the other direction for a passage from the second position to the first.
  • a first position or starting position for which the switching module 1 is in a first state
  • a second position for which this module is brought into a second state, or in the other direction for a passage from the second position to the first.
  • the first position results in a triggered state of the module, while the second position corresponds to an engaged state.
  • the main shaft 3 is rotated in a given direction, from its first position and here counterclockwise, by the action of an engagement cam 4 fixed on a shaft 5 whose rotation is provided by drive means, known to those skilled in the art.
  • drive means known to those skilled in the art.
  • the cam 4 is provided with a profile, through which it is pressed against a roller 6 carried by a trigger-release lever 7, itself laterally fixed on the main shaft 3, so as to rotate the main shaft, from its first position, to its second position for which the switching module 1 is engaged.
  • the profile of the cam 4 is also made so as to no longer cooperate with the roller 6 to drive the shaft 3, from the moment it has made it possible to reach the second position and as long as, on the one hand, the rotation of the cam did not allow him to find a first determined starting position and that, on the other hand, the lever 7 has not itself returned to a first determined starting position.
  • the trigger-release lever 7 carries a finger 8 enabling it to cooperate with a roller 9 carried by a retaining pawl 10, so as to prevent the main shaft 3 from rotating in the direction of clockwise, under the action of a return spring 11.
  • This spring is connected to one end of a lever 20 laterally fixed on the main shaft 3 and it is bandaged during the rotation of the shaft 3 under the action of the cam 4.
  • the retaining pawl 10 is a lever articulated on an axis 12. It is held in the position for which it prevents the main shaft from rotating, via a trigger cam 13 against which it is then in abutment.
  • the cam 13 is articulated on an axis 14 and controlled by triggering means 15, known to those skilled in the art and represented in symbolized form on the figures 1 and 2 .
  • the return spring 11 is fixed by a first end inside a container 21 from which a chain 22 which is fixed on the one hand to the second end of the spring 11 and, secondly, at the end of the lever 20.
  • the container must comprise means accessible from the outside which allow to tension and adjust the spring tension.
  • the chain 22 is folded which leads to it passing through return pulleys 23, in a relatively complicated path and in a manner that would obviously benefit from being simplified,
  • the invention therefore proposes a trigger-trigger arrangement for a control mechanism, ie which is schematized on the figure 2 .
  • This arrangement is intended to actuate a switching module 1 'which corresponds to the switching module 1 presented on the figure 1 , and that it is possible to position either in a triggered position, or in an engaged position, such as this module 1.
  • This main shaft 3 ' is rotated from a first position or starting position, by the action of an engagement cam 4' fixed on a shaft 5 'whose rotation is provided by drive means such that mentioned above.
  • the cam 4 ' which corresponds to the cam 4, is designed to press against a roller 6' carried by a trigger-release lever 7 'laterally fixed on the main shaft 3' so as to be able to rotate it since the first position, to a second position for which the module 1 'is in the state triggered.
  • the profile of the cam 4 ' is made, like that of the cam 4, to no longer cooperate with the roller 6' to drive the shaft 3 ', from the moment when the shaft has reached its second position and as long as the rotation did not allow the cam to return to the first position, as shown on the figure 2 .
  • any renewal of this cooperation involves a prior return of the lever 7 'in the starting position.
  • the lever 7 ' carries a finger 8' enabling it to cooperate with a roller 9 'carried by a retaining pawl 10', so as to prevent the rotation of the main shaft in the direction of clockwise, under the action of a return spring.
  • the pawl 10 ' is articulated on an axis 12' and is held in a position, for which it prevents the shaft 3 'from rotating under the traction of the return spring, by means of a tripping cam 13' .
  • This cam 13 ' is controlled by triggering means 15' under the same conditions as the triggering cam 13 by the triggering means 15.
  • This mechanical device is in the form of an autonomous subassembly in which a return spring 36 and a damper 37 are associated in a coaxial assembly.
  • This subassembly is provided in particular to allow independent adjustments of the pre-tension applied to the spring and damping at the damper
  • the damper 37 is for example a conventional oil damper which is articulated by a first end on a fixed pivot 24, as the damper 15 on the pivot 16.
  • This damper 37 comprises a piston rod 25, which projects from its second end and which is articulated on a lever 26 laterally fixed on the main shaft 3 '.
  • This lever 26 replaces the levers 19 and 20 of the known embodiment, described above.
  • the damper 37 comprises a tank 27, filled with oil, which is at least partially housed in a cylindrical body 28 where it is fixed and it is this body which comprises a passage 29 provided for receiving the pivot articulation 24.
  • the return spring 36 is a helical spring which is fixed at one end to the body 28 which it surrounds.
  • the body 28 has a circumferential groove of helical shape whose dimensions are complementary to that of the spring 36 which therefore comes to be secured by a first end, as seen on the Figures 2 and 3 .
  • the spring 36 is traversed along its length by the piston rod 25 and is fixed by its second end to a bushing 30 which also passes through the piston rod 25.
  • the fixing of the spring 25 on the bushing 30 is made like that of this spring on the body 28.
  • An adjustment sleeve 31 is screwed onto the end of the piston rod protruding from the tank 27 of the damper 37 and which is threaded for this purpose.
  • This sleeve is terminated at one end by a bearing collar 38 which is housed inside the helical spring, when the device is mounted, so as to serve as a stop for the sleeve 30.
  • This arrangement makes it possible to adjust the imposed constraint. longitudinally to the spring 36, by screwing or unscrewing the adjustment sleeve 31, it being understood that this spring is provided to exert traction on the lever 26.
  • a yoke 32 receives the threaded end of the piston rod 25.
  • the yoke 32 has an axis passage 33 provided to enable it to articulate on an end pivot 34 that carries the lever 26.
  • the spring 36 of the return and damping device thus constituted is thus elastically stretched, when the main shaft 3 'is rotated under the action of the cam 4' acting by pressing on the lever 7 ', when this cam is rotated by its drive means. Maximum stretching of the spring 36 is obtained when the cam 4 'has driven the switching module 1' in the engaged position. Simultaneously the piston rod 25 of the damper is brought to its maximum projecting position, out of the tank 27 of the damper.
  • the positioning of the sleeve 31 on the piston rod is adjusted by screwing or unscrewing, it makes it possible to adjust the restoring force exerted by the spring 36 on the main shaft 3 'by means of the lever 26.
  • force ensures the return of the main shaft in its first position, for which the switch 1 'is triggered, as soon as the cam 13 is recalled back due to operating conditions corresponding to the predetermined trip conditions.
  • the damper 37 comes into action during the return of the main shaft in the first position, under the action of the spring 36 and it provides a braking to prevent the occurrence of oscillations at the end of the race.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Push-Button Switches (AREA)
  • Vending Machines For Individual Products (AREA)
  • Power Steering Mechanism (AREA)
  • Lock And Its Accessories (AREA)

Abstract

The command circuit breaking mechanism has a switching module (1) activating a shaft (3) rotating a cam (4). There is a spring return mechanism. The spring return sub assembly has a deadener (37) and spring mechanism (36) held in a hollow section. The mechanism slides on a piston rod (25).

Description

L'invention concerne un dispositif destiné à équiper un mécanisme de commande à ressort d'un appareillage électrique de puissance, tel que par exemple un disjoncteur moyenne ou haute tension.The invention relates to a device for equipping a spring control mechanism of a power electrical equipment, such as for example a medium or high voltage circuit breaker.

Comme il est connu ce genre d'appareillage électrique comporte classiquement un module de commutation commandé par un mécanisme de commande où un agencement enclencheur-déclencheur est plus spécialement chargé de faire commuter le module d'une position à une autre en agissant sur lui par l'intermédiaire d'une liaison mécanique de commande pour le mettre en ou hors service et donc sous et hors tension et où un autre agencement est utilisé pour armer le précédent.As is known this kind of electrical equipment conventionally comprises a switching module controlled by a control mechanism where a trigger-triggering arrangement is more specifically responsible for switching the module from one position to another by acting on it by means of a intermediate a mechanical control link to turn it on or off and therefore on and off and another arrangement is used to arm the previous.

Un mécanisme de commande de ce genre est notamment décrit dans un brevet européen 651409 en liaison avec la figure 1 de ce brevet. Il comporte notamment un agencement enclencheur-déclencheur incluant un arbre principal de manoeuvre, dit de mise en circuit, sur lequel sont fixés divers leviers de commande qui permettent notamment à cet arbre d'agir sur le module et d'être entraîné en rotation sous l'action d'une came dans un premier sens déterminé, depuis une position de départ pour laquelle le module est dans un premier état jusqu'à une position pour laquelle le module atteint un second état. Cette rotation s'effectue par pression de la came sur un des leviers que porte l'arbre principal et à l'encontre d'un ressort de rappel qui est apte à faire tourner cet arbre principal en sens inverse du précédent et qui agit par l'intermédiaire d'un autre levier. La rotation inverse de l'arbre principal n'est réalisable que dans certaines conditions qui sont développées plus loin. Il est aussi prévu des moyens d'amortissement de fin de course qui sont rendus solidaires de l'arbre principal et notamment un amortisseur agissant sur cet arbre par un levier différent des précédents lors du retour de l'arbre en position de départ.A control mechanism of this kind is described in particular in a patent European 651409 in connection with the figure 1 of this patent. It comprises in particular a trigger-release arrangement including a main actuating shaft, said switching-on, on which are fixed various control levers which notably allow this shaft to act on the module and to be rotated under the control. action of a cam in a first predetermined direction, from a starting position for which the module is in a first state to a position for which the module reaches a second state. This rotation is effected by pressing the cam on one of the levers that carries the main shaft and against a return spring which is adapted to rotate the main shaft in the opposite direction of the previous one and which acts by means of intermediate of another lever. Reverse rotation of the main shaft is only feasible under certain conditions that are developed later. It is also provided end of stroke damping means which are secured to the main shaft and in particular a damper acting on this shaft by a lever different from the previous ones when returning the shaft to the starting position.

Ce genre de mécanisme de commande à ressort présente l'inconvénient d'impliquer un nombre de pièces différentes relativement élevé qui constituent des ensembles fonctionnels se combinant de manière relativement complexe dont la mise en service et le maintien en fonctionnement sont délicats à réaliser et donc trop coûteux.This type of spring-loaded control mechanism has the disadvantage of involving a relatively large number of different parts which constitute functional assemblies that combine in a relatively complex manner, the commissioning and maintenance of which are difficult to carry out and therefore too much expensive.

Le document US 2'717'288 divulgue un dispositif et un mécanisme selon les préambules des revendications 1 et 6.The document US 2'717'288 discloses a device and a mechanism according to the preambles of claims 1 and 6.

L'invention propose un dispositif pour mécanisme de commande à ressort d'un appareillage électrique de puissance, notamment moyenne ou haute tension, dans lequel au moins un module de commutation est commuté d'une position à une autre par l'intermédiaire d'un agencement enclencheur-déclencheur incluant un arbre principal de manoeuvre sur lequel sont fixés des leviers de commande permettant à cet arbre d'être entraîné en rotation par des moyens d'entraînement dans un premier sens déterminé, depuis une première position pour laquelle le module est dans un premier état jusqu'à une seconde position dans laquelle le module est amené dans un second état, et à l'encontre d'un ressort de rappel apte à faire tourner l'arbre principal en sens inverse pour ramener le module du second état au premier état. L'agencement comporte de plus un amortisseur de fin de course agissant lors du retour de l'arbre en première position sous l'action du ressort de rappel.The invention proposes a device for spring-loaded control mechanism of a power electrical equipment, in particular medium or high voltage, in which at least one switching module is switched from one position to another via a layout trigger-actuator including a main operating shaft on which are fixed control levers allowing this shaft to be rotated by drive means in a first predetermined direction, from a first position for which the module is in a first state to a second position in which the module is brought into a second state, and against a return spring adapted to rotate the main shaft in the opposite direction to bring the module of the second state to the first state. state. The arrangement further comprises a limit damper acting on the return of the shaft in first position under the action of the return spring.

Selon un aspect de l'invention, le dispositif est tel que défini dans la revendication 1.According to one aspect of the invention, the device is as defined in claim 1.

L'invention propose aussi un mécanisme de commande pour appareillage électrique de puissance, notamment moyenne ou haute tension, dans lequel au moins un module de commutation est commuté d'une position à une autre par l'intermédiaire d'un agencement enclencheur-déclencheur incluant un arbre de manoeuvre sur lequel sont fixés des leviers de commande permettant à cet arbre d'être entraîné en rotation, dans un premier sens déterminé sous l'action d'une came rotative venant presser sur un des leviers, dit d'enclenchement-déclenchement, ladite rotation s'effectuant depuis une première position pour laquelle le module est dans un premier état jusqu'à une seconde position dans laquelle le module est amené dans un second état, et à l'encontre d'un ressort de rappel apte à faire tourner l'arbre principal en sens inverse pour ramener le module du second état au premier état. La rotation de sens inverse n'est réalisable après effacement d'un cliquet de retenue qui retient cet arbre dans sa seconde position en agissant sur le levier d'enclenchement-déclenchement, sous le contrôle de moyens de déclenchement, lorsque la came est devenue inopérante en raison de sa rotation et de son profil. L'agencement comporte de plus un amortisseur de fin de course agissant lors du retour de l'arbre en première position sous l'action du ressort de rappel.The invention also proposes a control mechanism for electrical equipment of power, in particular medium or high voltage, in which at least one switching module is switched from one position to another by means of a triggering-triggering arrangement including an operating shaft on which are fixed control levers allowing this shaft to be rotated in a first direction determined by the action of a rotary cam that presses on one of the levers, said engagement-triggering said rotation being effected from a first position for which the module is in a first state to a second position in which the module is brought into a second state, and against a return spring capable of making turn the main shaft in the opposite direction to return the module of the second state to the first state. The rotation in the opposite direction is only possible after erasing a retaining pawl which retains the shaft in its second position by acting on the trigger-release lever, under the control of triggering means, when the cam has become inoperative because of its rotation and profile. The arrangement further comprises a limit damper acting on the return of the shaft in first position under the action of the return spring.

Selon un autre aspect de l'invention, ledit mécanisme est tel que défini dans la revendication 6.According to another aspect of the invention, said mechanism is as defined in claim 6.

L'invention, ses caractéristiques et ses avantages sont précisés dans la description qui suit en liaison avec les figures évoquées ci-dessous.The invention, its characteristics and its advantages are specified in the description which follows in conjunction with the figures mentioned below.

La figure 1 présente un schéma d'un agencement enclencheur-déclencheur que comporte un mécanisme connu de commande d'appareillage électrique de puissance.The figure 1 presents a diagram of a trigger-trigger arrangement that comprises a known power equipment control mechanism.

La figure 2 présente un schéma d'un agencement enclencheur-déclencheur comporté par un mécanisme de commande analogue à celui évoqué ci-dessus qui est équipé d'un dispositif selon l'invention.The figure 2 shows a diagram of an engagement-trigger arrangement comprising a control mechanism similar to that mentioned above which is equipped with a device according to the invention.

La figure 3 présente une coupe d'un dispositif constitué par un sous-ensemble de rappel et d'amortissement, selon l'invention.The figure 3 presents a section of a device constituted by a subset of return and damping, according to the invention.

Le mécanisme de commande à ressort, connu, dont un des agencements principaux est schématisé sur la figure 1, correspond à celui qui est décrit en liaison avec la figure 1 de la demande européenne 651409 . Il est prévu pour équiper un appareillage électrique de puissance et notamment un disjoncteur moyenne ou haute tension, comportant un module de commutation de puissance 1 doté d'un agencement enclencheur-déclencheur qui assure plus particulièrement la mise sous et hors tension. A cet effet cet agencement dispose de moyens, schématisés par une liaison mécanique de commande L, lui permettant d'agir sur le module de commutation 1, symbolisé par un contact qui est représenté en position ouverte sur la figure 1 et en position fermée sur la figure 2.The known spring control mechanism, of which one of the main arrangements is schematized on the figure 1 , corresponds to the one described in connection with the figure 1 demand European 651409 . It is intended to equip a power electrical equipment and in particular a medium or high voltage circuit breaker, comprising a power switching module 1 having a trigger-trigger arrangement which ensures more particularly the power on and off. For this purpose this arrangement has means, schematized by a mechanical control link L, allowing it to act on the switching module 1, symbolized by a contact which is shown in the open position on the figure 1 and in the closed position on the figure 2 .

La liaison de commande L est articulée sur un levier 2 latéralement porté par un arbre principal de manoeuvre 3 tournant de manière limitée, soit dans un sens pour permettre le passage d'une première position ou position de départ, pour laquelle le module de commutation 1 est dans un premier état, à une seconde position, pour laquelle ce module est amené dans un second état, soit dans l'autre sens pour un passage de la seconde position à la première. Généralement la première position se traduit par un état déclenché du module, alors que la seconde position correspond à un état enclenché.The control link L is articulated on a lever 2 laterally carried by a main operating shaft 3 which rotates in a limited manner, in one direction to allow the passage of a first position or starting position, for which the switching module 1 is in a first state, at a second position, for which this module is brought into a second state, or in the other direction for a passage from the second position to the first. Generally the first position results in a triggered state of the module, while the second position corresponds to an engaged state.

L'arbre principal 3 est mis en rotation dans un sens déterminé, depuis sa première position et ici en sens inverse des aiguilles d'une montre, par l'action d'une came d'enclenchement 4 fixée sur un arbre 5 dont la rotation est assurée par des moyens d'entraînement, connus de l'homme de métier. Ces moyens sont notamment décrits dans la demande européenne 651409 et ils ne sont pas détaillés ici dans la mesure où ils n'ont qu'un rapport indirect avec l'objet de l'invention.The main shaft 3 is rotated in a given direction, from its first position and here counterclockwise, by the action of an engagement cam 4 fixed on a shaft 5 whose rotation is provided by drive means, known to those skilled in the art. These means are in particular described in the application European 651409 and they are not detailed here in so far as they have only an indirect relation with the object of the invention.

La came 4 est dotée d'un profil, par l'intermédiaire duquel elle vient presser contre un galet 6 porté par un levier d'enclenchement-déclenchement 7, lui-même fixé latéralement sur l'arbre principal 3, de manière à faire tourner cet arbre principal, depuis sa première position, vers sa seconde position pour laquelle le module de commutation 1 est enclenché. Le profil de la came 4 est aussi réalisé de manière à ne plus coopérer avec le galet 6 pour entraîner l'arbre 3, à partir du moment où il a permis d'atteindre la seconde position et tant que, d'une part, la rotation de la came ne lui a pas permis de retrouver une première position déterminée de départ et que, d'autre part, le levier 7 n'est pas lui-même revenu dans une première position déterminée de départ.The cam 4 is provided with a profile, through which it is pressed against a roller 6 carried by a trigger-release lever 7, itself laterally fixed on the main shaft 3, so as to rotate the main shaft, from its first position, to its second position for which the switching module 1 is engaged. The profile of the cam 4 is also made so as to no longer cooperate with the roller 6 to drive the shaft 3, from the moment it has made it possible to reach the second position and as long as, on the one hand, the rotation of the cam did not allow him to find a first determined starting position and that, on the other hand, the lever 7 has not itself returned to a first determined starting position.

Le levier d'enclenchement-déclenchement 7 porte un doigt 8 lui permettant de coopérer avec un galet 9 porté par un cliquet de retenue 10, de manière à empêcher l'arbre principal 3 de tourner dans le sens des aiguilles d'une montre, sous l'action d'un ressort de rappel 11. Ce ressort est relié à une extrémité d'un levier 20 latéralement fixé sur l'arbre principal 3 et il est bandé lors de la rotation de l'arbre 3 sous l'action de la came 4. Le cliquet de retenue 10 est un levier articulé sur un axe 12. Il est maintenu dans la position pour laquelle il empêche l'arbre principal de tourner, par l'intermédiaire d'une came de déclenchement 13 contre laquelle il est alors en butée. La came 13 est articulée sur un axe 14 et commandée par des moyens de déclenchement 15, connus de l'homme de métier et représentés sous forme symbolisée sur les figures 1 et 2. Ces moyens connus permettent de commander, automatiquement et/ou manuellement, la rotation de la came 13 pour lui permettre de passer d'une position pour laquelle le cliquet 10 bloque la rotation de l'arbre principal 3, sous l'effet du ressort 11, par immobilisation du doigt 8, à une position pour laquelle le cliquet 10 s'efface par rotation et libère le doigt, cette rotation étant ici prévue dans le sens des aiguilles d'une montre.The trigger-release lever 7 carries a finger 8 enabling it to cooperate with a roller 9 carried by a retaining pawl 10, so as to prevent the main shaft 3 from rotating in the direction of clockwise, under the action of a return spring 11. This spring is connected to one end of a lever 20 laterally fixed on the main shaft 3 and it is bandaged during the rotation of the shaft 3 under the action of the cam 4. The retaining pawl 10 is a lever articulated on an axis 12. It is held in the position for which it prevents the main shaft from rotating, via a trigger cam 13 against which it is then in abutment. The cam 13 is articulated on an axis 14 and controlled by triggering means 15, known to those skilled in the art and represented in symbolized form on the figures 1 and 2 . These known means make it possible to control, automatically and / or manually, the rotation of the cam 13 to allow it to pass from a position for which the pawl 10 blocks the rotation of the main shaft 3, under the effect of the spring 11 by immobilizing the finger 8, at a position for which the pawl 10 is rotated and frees the finger, this rotation being here provided in the direction of clockwise.

La rotation de l'arbre principal 3 sous l'action en traction du ressort 11 est permise par la libération du doigt 8. Elle agit sur le module de commutation 1 qui quitte la position enclenchée, où il se trouvait maintenu, pour revenir en première position. Cette rotation est freinée en fin de course par l'intermédiaire d'un amortisseur 16, qui est articulé sur un axe fixe 17 et dont le piston 18 vient s'articuler à l'extrémité d'un levier 19 latéralement fixé sur l'arbre principal 3.The rotation of the main shaft 3 under the tensile action of the spring 11 is enabled by the release of the finger 8. It acts on the switching module 1 which leaves the engaged position, where it was held, to return to the first position. This rotation is braked at the end of the stroke by means of a damper 16, which is articulated on a fixed axis 17 and whose piston 18 is articulated at the end of a lever 19 laterally fixed on the shaft principal 3.

Selon l'invention, il est prévu de substituer à ce mécanisme de commande élaboré un mécanisme efficace et fiable qui soit moins complexe et moins encombrant, comme l'illustrent les figures 2 et 3. Ceci concerne plus particulièrement les sous-ensembles fonctionnels dont les éléments essentiels sont le ressort de rappel 11 et l'amortisseur 16. Ainsi, dans la réalisation connue succinctement décrite ci-dessus l'amortisseur et le ressort occupent chacun un volume relativement importan :t dans le mécanisme et les moyens de liaison du ressort et de l'amortisseur à l'arbre principal sont mécaniquement assez complexes et impliquent la présence de moyens de réglage spécifiques qui n'ont pas été développés ici. Par exemple, dans le mécanisme connu évoqué ci-dessus, le ressort de rappel 11 est fixé par une première extrémité à l'intérieur d'un contenant 21 d'où sort une chaîne 22 qui est fixée, d'une part, à la seconde extrémité du ressort 11 et, d'autre part, en extrémité du levier 20. Le contenant doit comporter des moyens accessibles de l'extérieur qui permettent de mettre sous tension et de régler la tension du ressort. A des fins de diminution d'encombrement, la chaîne 22 est repliée ce qui conduit à ce qu'elle passe par des poulies de renvoi 23, selon un trajet relativement compliqué et d'une manière qui gagnerait manifestement à être simplifiée,According to the invention, it is intended to substitute for this developed control mechanism an efficient and reliable mechanism which is less complex and less cumbersome, as illustrated by the Figures 2 and 3 . This more particularly relates to the functional subassemblies whose essential elements are the return spring 11 and the damper 16. Thus, in the embodiment known succinctly described above the damper and the spring each occupy a relatively large volume t in the mechanism and the connecting means of the spring and the damper to the main shaft are mechanically quite complex and involve the presence of specific adjustment means that have not been developed here. For example, in the known mechanism mentioned above, the return spring 11 is fixed by a first end inside a container 21 from which a chain 22 which is fixed on the one hand to the second end of the spring 11 and, secondly, at the end of the lever 20. The container must comprise means accessible from the outside which allow to tension and adjust the spring tension. For purposes of reduced space, the chain 22 is folded which leads to it passing through return pulleys 23, in a relatively complicated path and in a manner that would obviously benefit from being simplified,

Pour remédier à ces inconvénients l'invention propose donc un agencement enclencheur-déclencheur pour mécanisme de commande, iei que schématise sur la figure 2. Cet agencement est destiné à actionner un module de commutation 1' qui correspond au module de commutation 1 présenté sur la figure 1, et qu'il est possible de positionner soit dans une position déclenchée, soit dans une position enclenchée, comme ce module 1.To overcome these drawbacks, the invention therefore proposes a trigger-trigger arrangement for a control mechanism, ie which is schematized on the figure 2 . This arrangement is intended to actuate a switching module 1 'which corresponds to the switching module 1 presented on the figure 1 , and that it is possible to position either in a triggered position, or in an engaged position, such as this module 1.

Des moyens, schématisés par une liaison mécanique de commande L' permettent d'agir sur le module de commutation 1' symbolisé par un contact représenté en position fermée. La liaison L' est articulée sur un levier 2' latéralement porté par un arbre principal 3' fonctionnant dans les mêmes conditions que l'arbre principal 3.Means, schematized by a mechanical control link L 'act on the switching module 1' symbolized by a contact shown in the closed position. The link L 'is articulated on a lever 2' laterally carried by a main shaft 3 'operating under the same conditions as the main shaft 3.

Cet arbre principal 3' est mis en rotation depuis une première position ou position de départ, par l'action d'une came d'enclenchement 4' fixée sur un arbre 5' dont la rotation est assurée par des moyens d'entraînement tels qu'évoqués plus haut. La came 4', qui correspond à la came 4, est prévue pour venir presser contre un galet 6' porté par un levier d'enclenchement-déclenchement 7' latéralement fixé sur l'arbre principal 3' de manière à pouvoir le faire tourner depuis la première position, jusqu'à une seconde position pour lequel le module 1' est à l'état enclenché. Le profil de la came 4' est réalisé, comme celui de la came 4, pour ne plus coopérer avec le galet 6' pour entraîner l'arbre 3', à partir du moment où cet arbre a atteint sa seconde position et tant que la rotation n'a pas permis à la came de revenir en première position, telle que représentée sur la figure 2. Comme précédemment, tout renouvellement de cette coopération implique un retour préalable du levier 7' en position de départ.This main shaft 3 'is rotated from a first position or starting position, by the action of an engagement cam 4' fixed on a shaft 5 'whose rotation is provided by drive means such that mentioned above. The cam 4 ', which corresponds to the cam 4, is designed to press against a roller 6' carried by a trigger-release lever 7 'laterally fixed on the main shaft 3' so as to be able to rotate it since the first position, to a second position for which the module 1 'is in the state triggered. The profile of the cam 4 'is made, like that of the cam 4, to no longer cooperate with the roller 6' to drive the shaft 3 ', from the moment when the shaft has reached its second position and as long as the rotation did not allow the cam to return to the first position, as shown on the figure 2 . As before, any renewal of this cooperation involves a prior return of the lever 7 'in the starting position.

Le levier 7' porte un doigt 8' lui permettant de coopérer avec un galet 9' porté par un cliquet de retenue 10', de manière à empêcher la rotation de l'arbre principal dans le sens des aiguilles d'une montre, sous l'action d'un ressort de rappel. Le cliquet 10' est articulé sur un axe 12' et il est maintenu dans une position, pour laquelle il empêche l'arbre 3' de tourner sous la traction du ressort de rappel, par l'intermédiaire d'une came de déclenchement 13'. Cette came 13' est commandée par des moyens de déclenchement 15', dans les mêmes conditions que la came de déclenchement 13 par les moyens de déclenchement 15.The lever 7 'carries a finger 8' enabling it to cooperate with a roller 9 'carried by a retaining pawl 10', so as to prevent the rotation of the main shaft in the direction of clockwise, under the action of a return spring. The pawl 10 'is articulated on an axis 12' and is held in a position, for which it prevents the shaft 3 'from rotating under the traction of the return spring, by means of a tripping cam 13' . This cam 13 'is controlled by triggering means 15' under the same conditions as the triggering cam 13 by the triggering means 15.

Par contre, selon l'invention, il est prévu de substituer un dispositif mécanique 35 unique aux sous-ensembles fonctionnels dont les éléments essentiels étaient le ressort de rappel 11 et l'amortisseur 16 dans l'agencement enclencheur-déclencheur tel que décrit en liaison avec la figure 1.On the other hand, according to the invention, provision is made to substitute a single mechanical device 35 for the functional subassemblies whose essential elements were the return spring 11 and the damper 16 in the trigger-trigger arrangement as described in connection with FIG. with the figure 1 .

Ce dispositif mécanique, selon l'invention, se présente sous la forme d'un sous-ensemble autonome dans lequel un ressort de rappel 36 et un amortisseur 37 sont associés dans un montage coaxial. Ce sous-ensemble est prévu en particulier pour permettre des réglages indépendants de la pré-tension appliquée au ressort et de l'amortissement au niveau de l'amortisseurThis mechanical device, according to the invention, is in the form of an autonomous subassembly in which a return spring 36 and a damper 37 are associated in a coaxial assembly. This subassembly is provided in particular to allow independent adjustments of the pre-tension applied to the spring and damping at the damper

L'amortisseur 37 est par exemple un amortisseur à huile usuel qui est articulé par une première extrémité sur un pivot fixe 24, comme l'amortisseur 15 sur le pivot 16. Cet amortisseur 37 comporte une tige de piston 25, qui saille de sa seconde extrémité et qui s'articule sur un levier 26 latéralement fixé sur l'arbre principal 3'. Ce levier 26 se substitue aux leviers 19 et 20 de la réalisation connue, décrite plus haut.The damper 37 is for example a conventional oil damper which is articulated by a first end on a fixed pivot 24, as the damper 15 on the pivot 16. This damper 37 comprises a piston rod 25, which projects from its second end and which is articulated on a lever 26 laterally fixed on the main shaft 3 '. This lever 26 replaces the levers 19 and 20 of the known embodiment, described above.

Dans la réalisation proposée, l'amortisseur 37 comporte une cuve 27, remplie d'huile, qui est au moins partiellement logée dans un corps cylindrique 28 où elle est fixée et c'est ce corps qui comporte un passage 29 prévu pour recevoir le pivot d'articulation 24.In the proposed embodiment, the damper 37 comprises a tank 27, filled with oil, which is at least partially housed in a cylindrical body 28 where it is fixed and it is this body which comprises a passage 29 provided for receiving the pivot articulation 24.

Le ressort de rappel 36 est un ressort hélicoïdal qui vient se fixer par une extrémité sur le corps 28 qu'il vient entourer. Dans l'exemple de réalisation envisagé, le corps 28 comporte une rainure périphérique d'allure hélicoïdale dont les dimensions sont complémentaires de celle du ressort 36 qui vient donc s'y assujettir par une première extrémité, comme on le voit sur les figures 2 et 3. Le ressort 36 est traversé sur sa longueur par la tige de piston 25 et il se fixe par sa seconde extrémité sur une douille 30 que traverse également la tige de piston 25. Dans l'exemple de réalisation proposé, la fixation du ressort 25 sur la douille 30 est réalisée comme celle de ce ressort sur le corps 28.The return spring 36 is a helical spring which is fixed at one end to the body 28 which it surrounds. In the exemplary embodiment envisaged, the body 28 has a circumferential groove of helical shape whose dimensions are complementary to that of the spring 36 which therefore comes to be secured by a first end, as seen on the Figures 2 and 3 . The spring 36 is traversed along its length by the piston rod 25 and is fixed by its second end to a bushing 30 which also passes through the piston rod 25. In the proposed embodiment, the fixing of the spring 25 on the bushing 30 is made like that of this spring on the body 28.

Un manchon d'ajustement 31 se visse sur l'extrémité de la tige de piston qui saille hors de la cuve 27 de l'amortisseur 37 et qui est filetée en ce but. Ce manchon est terminé à une extrémité par un collet d'appui 38 qui est logé à l'intérieur du ressort hélicoïdal, lorsque le dispositif est monté, de manière à servir de butée pour la douille 30. Cet agencement permet de régler la contrainte imposée longitudinalement au ressort 36, par vissage ou dévissage du manchon d'ajustement 31, étant entendu que ce ressort est prévu pour exercer une traction sur le levier 26.An adjustment sleeve 31 is screwed onto the end of the piston rod protruding from the tank 27 of the damper 37 and which is threaded for this purpose. This sleeve is terminated at one end by a bearing collar 38 which is housed inside the helical spring, when the device is mounted, so as to serve as a stop for the sleeve 30. This arrangement makes it possible to adjust the imposed constraint. longitudinally to the spring 36, by screwing or unscrewing the adjustment sleeve 31, it being understood that this spring is provided to exert traction on the lever 26.

L'extrémité du manchon d'ajustement 31, qui est à l'opposé de celle par où pénètre la tige de piston 25, vient s'articuler à l'extrémité du levier 26 de manière que le dispositif 35 selon l'invention puisse pivoter en suivant le mouvement de cette extrémité, lorsque l'arbre principal 3' est manoeuvré. Dans l'exemple de réalisation proposé, une chape 32 reçoit l'extrémité filetée de la tige de piston 25. La chape 32 comporte un passage d'axe 33 prévu pour lui permettre de venir s'articuler sur un pivot d'extrémité 34 que porte le levier 26.The end of the adjustment sleeve 31, which is opposite to that through which penetrates the piston rod 25, is articulated at the end of the lever 26 so that the device 35 according to the invention can rotate following the movement of this end, when the main shaft 3 'is maneuvered. In the proposed embodiment, a yoke 32 receives the threaded end of the piston rod 25. The yoke 32 has an axis passage 33 provided to enable it to articulate on an end pivot 34 that carries the lever 26.

Le ressort 36 du dispositif de rappel et d'amortissement ainsi constitué est donc élastiquement étiré, lorsque l'arbre principal 3' est mis en rotation sous l'action de la came 4' agissant par appui sur le levier 7', lorsque cette came est mise en rotation par ses moyens d'entraînement. Un étirement maximal du ressort 36 est obtenu, lorsque la came 4' a entraîné le module de commutation 1' en position enclenchée. Simultanément la tige de piston 25 de l'amortisseur est amené en sa position de saillie maximale, hors de la cuve 27 de l'amortisseur.The spring 36 of the return and damping device thus constituted is thus elastically stretched, when the main shaft 3 'is rotated under the action of the cam 4' acting by pressing on the lever 7 ', when this cam is rotated by its drive means. Maximum stretching of the spring 36 is obtained when the cam 4 'has driven the switching module 1' in the engaged position. Simultaneously the piston rod 25 of the damper is brought to its maximum projecting position, out of the tank 27 of the damper.

Le positionnement du manchon 31 sur la tige de piston se règle par vissage ou dévissage, il permet de régler la force de rappel exercée par le ressort 36 sur l'arbre principal 3' par l'intermédiaire du levier 26. Cette force assure le retour de l'arbre principal dans sa première position, pour laquelle le commutateur 1' est déclenché, dès que la came 13 est rappelée en arrière en raison de conditions d'exploitation correspondant aux conditions de déclenchement préétablies. L'amortisseur 37 entre en action lors du retour de l'arbre principal en première position, sous l'action du ressort 36 et il assure un freinage pour permettre d'éviter l'apparition d'oscillations en fin de course.The positioning of the sleeve 31 on the piston rod is adjusted by screwing or unscrewing, it makes it possible to adjust the restoring force exerted by the spring 36 on the main shaft 3 'by means of the lever 26. force ensures the return of the main shaft in its first position, for which the switch 1 'is triggered, as soon as the cam 13 is recalled back due to operating conditions corresponding to the predetermined trip conditions. The damper 37 comes into action during the return of the main shaft in the first position, under the action of the spring 36 and it provides a braking to prevent the occurrence of oscillations at the end of the race.

Claims (7)

  1. A device for a spring-operated control mechanism for electrical power equipment, in particular for medium or high voltage, in which at least one switching module (1') is switched from one position to another through the intermediary of an engaging-disengaging arrangement incorporating a main operating shaft (3') on which control levers are fixed enabling the shaft to be driven in rotation through the action of a cam (4') in a first specified direction from a first position in which the module is in a first state to a second position in which the module is brought into a second state against a return spring able to rotate the main shaft in the opposite direction to return the module from the second state to the first state, the said engaging/disengaging arrangement also comprising an overtravel limit damper acting during return of the shaft to the first position through the action of the return spring, characterised in that the said device is composed of a return and damping subassembly comprising a damper (37) and a return spring (36) mounted coaxially between two hinge pivots of which one (24) can be attached to a fixed point and of which the other (34) can be attached to the extremity of one of the levers (26) carried by the main shaft, the bore (27) of the damper (37) is hinged on the first of the pivots and the piston rod (25) of that damper is hinged on the second of the pivots and the spring is integral with the bore of the damper at a first extremity and with the hinged extremity of the piston rod at a second extremity and surrounds the said bore.
  2. A device according to claim 1, in which the piston rod is threaded at one extremity to receive a tension adjusting arrangement for the return spring which it passes through in such a way that the position of that arrangement on a part of the length of the rod and the prestress imposed on the spring can be altered.
  3. A device according to either of claims 1 or 2, in which is provided an arrangement for adjustment of the stress applied to the return spring comprising an adjustment sleeve (31) screwed to the piston rod and provided at one extremity of a supporting collar (38) housed within the spring and a plug (30) for securing the extremity of the spring threaded onto the sleeve and abutting against the supporting collar through the tensile force of the spring.
  4. A device according to any one of claims 1 to 3, in which the piston rod is hinged on a pivot (34) carried by a lever (26) attached to the main shaft.
  5. A device according to any one of claims 1 to 4, in which the piston rod (24) is hinged by means of a clevis mounting (32) on a pivot (34) of a lever (26) laterally attached to the main shaft, this clevis mounting being attached to the extremity of the rod beyond the return spring (36).
  6. A control mechanism for electrical power equipment, in particular for medium or high voltage, in which at least one switching module (1') is switched from one position to another through the intermediary of an engaging/disengaging arrangement including an operating shaft (3') on which are fixed control levers enabling the shaft to be driven in rotation in a first direction, the said rotation taking place from a first position in which the module is in a first state to a second position in which the module is brought into a second state against a return spring capable of turning the main shaft in the opposite direction to return the module from the second state to the first state, the said arrangement furthermore comprising an overtravel limit damper acting when the shaft returns to the first position through the action of the return spring, the said engaging/disengaging arrangement comprising a lever (26) attached to the main shaft, carrying an end pivot (34) about which a device comprising a return and damping sub-assembly including a damper (37) and a return spring (36) coaxially mounted between two hinge pivots, of which one is fixed and the other is the said extremity pivot (34), is hinged, the bore (27) of the damper being hinged to a first of the pivots and the piston rod (25) of that damper being hinged to the second of these pivots, the mechanism being characterised in that the first direction of rotation of the said shaft is determined by the action of a rotary cam (4') pressing on one of the levers (7'), referred to as an engaging/disengaging lever, the said opposite rotation can be carried out after a retaining ratchet (10') retaining that shaft in its second position acting on the engaging/disengaging lever (7') is released under the control of disengaging means (5) when the cam becomes inoperative because of its rotation and its profile, and the return spring is of integral with the bore of the damper at a first extremity and the hinge extremity of the piston rod at a second extremity and surrounds the said bore.
  7. Control mechanism according to claim 6, characterised in that it comprises a device according to at least one of the preceding device claims.
EP01400519A 2000-03-02 2001-02-28 Device for operating mechanism of an electrical apparatus and operating mechanism with such a device Expired - Lifetime EP1130610B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0002687A FR2805921B1 (en) 2000-03-02 2000-03-02 DEVICE FOR CONTROL MECHANISM OF ELECTRICAL APPARATUS AND CONTROL MECHANISM PROVIDED WITH SUCH A DEVICE
FR0002687 2000-03-02

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EP1130610A1 EP1130610A1 (en) 2001-09-05
EP1130610B1 true EP1130610B1 (en) 2008-04-23

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AT (1) ATE393460T1 (en)
DE (1) DE60133684T2 (en)
FR (1) FR2805921B1 (en)

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FR2925211B1 (en) * 2007-12-17 2010-01-15 Areva T & D Ag COMPACT AND ROBUST CONTROL FOR MEDIUM AND HIGH VOLTAGE ELECTRICAL EQUIPMENT
FR2925210B1 (en) * 2007-12-17 2010-01-15 Areva T&D Ag COMPACT CONTROL FOR MEDIUM AND HIGH VOLTAGE ELECTRICAL EQUIPMENT
CN103236358B (en) * 2013-04-15 2015-07-01 无锡市锡山湖光电器有限公司 Buffer for circuit breaker
CN110176371B (en) * 2019-07-03 2024-05-07 珠海鼎冠电气有限公司 Low-vibration switch mechanism
CN112382517B (en) * 2020-11-02 2023-04-28 平高集团有限公司 Spring operating mechanism closing system and spring operating mechanism
CN112366120A (en) * 2020-11-05 2021-02-12 江苏大全凯帆开关有限公司 Main spring assembly quality

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US1867847A (en) * 1928-02-01 1932-07-19 Kelman Electric & Mfg Company Operating mechanism for oil switches
US2717288A (en) * 1952-01-04 1955-09-06 Gen Electric Pneumatically controlled operating device for electric circuit breakers
US3845433A (en) * 1973-09-28 1974-10-29 Arrow Hart Inc Switch operator with tripping means
ATE158105T1 (en) * 1993-11-03 1997-09-15 Gec Alsthom T & D Ag SPRING DRIVE FOR A SWITCHING DEVICE

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CN103560025B (en) * 2013-10-12 2016-05-18 安徽中电兴发与鑫龙科技股份有限公司 One AC high voltage vacuum breaker mechanism

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ATE393460T1 (en) 2008-05-15
EP1130610A1 (en) 2001-09-05
DE60133684T2 (en) 2009-07-02
DE60133684D1 (en) 2008-06-05
FR2805921A1 (en) 2001-09-07
FR2805921B1 (en) 2002-11-29

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