EP0058585B1 - Operating mechanism for electrical switching apparatuses with three separate positions - Google Patents

Operating mechanism for electrical switching apparatuses with three separate positions Download PDF

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Publication number
EP0058585B1
EP0058585B1 EP19820400131 EP82400131A EP0058585B1 EP 0058585 B1 EP0058585 B1 EP 0058585B1 EP 19820400131 EP19820400131 EP 19820400131 EP 82400131 A EP82400131 A EP 82400131A EP 0058585 B1 EP0058585 B1 EP 0058585B1
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EP
European Patent Office
Prior art keywords
crank
locking
cam
operating mechanism
spring
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
Application number
EP19820400131
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German (de)
French (fr)
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EP0058585A1 (en
Inventor
Jean-Yves Ferton
Robert Micoud
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Merlin Gerin SA
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Merlin Gerin SA
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Publication date
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0058585A1 publication Critical patent/EP0058585A1/en
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Publication of EP0058585B1 publication Critical patent/EP0058585B1/en
Expired legal-status Critical Current

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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
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3047—Power arrangements internal to the switch for operating the driving mechanism using spring motor adapted for operation of a three-position switch, e.g. on-off-earth

Definitions

  • a toggle device of the "tumbler" type requires a significant angular travel of the control crank between the closed F and open 0 positions.
  • the actuating spring is compressed halfway in the vicinity of the dead center of the toggle joint, and is partially relaxed in positions F and 0. It can be seen that it is difficult to carry out an additional stroke with the same knee lever. beyond position 0 to earth position T.
  • an additional grounding control independent of the main toggle joint is generally used and it is then essential to provide interlockings between the two, which complicates the realization of the mechanism.
  • the object of the invention is to remedy these drawbacks and to provide a simple and reliable operating mechanism comprising a toggle capable of actuating the apparatus between the three positions F, 0 and T.
  • the mechanism is characterized in that it further comprises a control member capable of being either in a rest position when the transmission element is moved by the toggle device between said first and second positions F and 0 , either in an active earthing position, said member cooperating with the toggle joint and with a first locking means to form in the rest position a fixed fulcrum at the actuating spring and ensure the locking of the locking means during the abutment of the transmission element in said second position 0 from said first F, the passage of the control member from the rest position to the active position causing the unlocking of the locking means and a modification of the fulcrum and of the line of action of the spring biased in compression to drive the transmission element released from said second intermediate position 0 towards said third th earthing position.
  • a control member capable of being either in a rest position when the transmission element is moved by the toggle device between said first and second positions F and 0 , either in an active earthing position, said member cooperating with the toggle joint and with a first locking means to form in the rest position a fixed ful
  • control member comprises a grounding crank provided with an axis slidably mounted in a slide of the lever of the toggle joint to constitute said spring fulcrum whose line d action is confused with the longitudinal direction of the lever.
  • a connecting rod is arranged between the earthing crank and the first locking means of the transmission element to immobilize the crank and said locking means respectively in the rest positions and for locking when the transmission member moves alternately between positions F and 0 and for successively transmitting unlocking and locking orders to said first locking means when the crank moves from the rest position to the active position and vice versa , allowing the drive of the transmission member respectively from position 0 to the earthed position T, then in the opposite direction from position T to position 0.
  • a lock ensures the locking of the cam in the closed position F when the pivot axis of the toggle joint abuts the bottom of the lumen after passing the point comes out of alignment of the axes, the position of the axis then being stable for maintaining maximum compression of the spring.
  • the mechanism is then in the closed - armed position.
  • a triggering device for example a striker trigger of a fuse circuit breaker combined with the breaking member, cooperates with the latch to cause the unlocking of the cam which pivots towards the open position under the action of the spring relaxation.
  • FIG. 1 is shown schematically an operating mechanism 10 associated by a drive lever 12 of insulating material to the movable assembly of an electrical switchgear 14, in particular a switch or a multipole circuit breaker incorporated in an electrical cell with medium voltage.
  • the apparatus 14 is inserted between the busbar 16 and the connection cables 18 of the cell, each pole comprising a movable contact 20 capable of occupying three distinct stable positions during the travel of movement of the operating mechanism 10, namely a first position F for operating and closing the contacts, a second intermediate position 0 for opening or isolation, and a third position T for earthing in which the cable 18 of the corresponding phase is electrically connected by the contact mobile to a stud 22 at the earth's potential.
  • the movable contact 20, in permanent electrical connection with the cable 18, is formed by an arm concealed in a pivoting movement, but it is understood that the movable contact of each pole could be constituted by a sliding pin mounted in alternating translation between the extreme positions F and T.
  • the operating mechanism 10 is of the "tumbler" type with sudden overrun of neutral position by means of a toggle associated with a single actuating spring 24 making it possible to obtain rapid movement of the mobile equipment of the apparatus 14 endowed with a breaking power during the race FO intervening in a clockwise direction from the closed position F towards the open position, and with a closed power during the races 0 F (anticlockwise from position 0- to position F) and 0 T (clockwise from position 0 to position T).
  • the kinematic chain of the operating mechanism 10 (fig. 2 to 4) of a switch is housed between two metal plates 26, 28 and comprises a control cam 30 integral with the drive lever 12 insulating the mobile equipment.
  • the cam 30 is mounted idly on a transverse axis 32 carried by the plates 26, 28 parallel and is provided with a curvilinear light 34 in the form of a crescent centered on the control axis 32.
  • the toggle joint is formed by an operating crank 35 secured to the axis 32 and comprising at its opposite end a pivot axis 36 articulated on a lever 38 supporting the actuating spring 24.
  • the latter takes support on a fixed shoulder 40 of the lever 38 and on a variable point of application formed by an axis 42 of a bent crank 44 for grounding control.
  • the axis 42 is capable of moving in a slide 46 or slide formed by an oblong hole in the lever 38 and extending along the line of action of the spring 24.
  • the earthing crank 44 is rotatably mounted on a pivot 48 and remains stationary during the travel of the moving assembly between the closed F and open 0 positions.
  • a transmission or connection rod 50 is mechanically connected by one of its ends to a crank pin 52 of the earthing crank 44 and by its end opposite to a crank pin 54 of a first crank 56 for locking the cam 30 in open position 0.
  • the pivot axis 36 of the toggle moves in the slot 34 to compress the spring 24 between the positions F and 0.
  • the locking crank 56 is loosely mounted on a transverse axis 58 supporting a blocking lever 60 with a roller 62 cooperating with a bearing face 63 of the cam 30 in the open 0 position.
  • An unlocking lug 64 is arranged on the crank 56 and cooperates during earthing with the locking lever 60 driven towards an unlocked position of the cam 30.
  • a second crank 66 for locking the cam 30 in the closed position is rotatably mounted on an axis 68 and is urged clockwise to bear against a stop 72 by means of a tension spring 70.
  • the crank 66 comprises a cleat 74 coming into engagement with a ramp 76 inclined from the cam 30 in position F closed.
  • the cam 30 for controlling the drive lever 12 is in stable abutment against the axis 68 of the second locking crank 66 and is held in this position by the spring 24 associated with the toggle joint and by the stop 74 in abutment against the ramp 76.
  • the crank 66 is locked against the abutment 72.
  • the pivot axis 36 of the toggle joint is positioned in the bottom 80 of the light 34 in the vicinity of the axis 68, and the lever 38 is substantially perpendicular to the operating crank 35.
  • the switch is opened after engagement of an operating lever (not shown) on the control shaft 32 followed by rotation of the crank 35 anticlockwise indicated by arrow 0 (fig. 2).
  • the cam 30 remains stationary and keeps the moving element of the switch in the closed position until the angular travel of the pivot axis 36 is caught in the curvilinear slot 34.
  • the actuating spring 24 is compressed as much as possible by sliding the slide 46 of the lever 38 on the axis 42.
  • FIG. 3 represents the mechanism 10 in position 0 of opening of the switch.
  • the locking crank 66 is kept apart from the stop 72 against the force of the spring 70 by the reaction of the circular sector 84 of the cam 30 on the cleat 74.
  • the bearing face 63 of the cam 30 is in stop against the roller 62 of the locking lever 60 in the locked position.
  • the spring 24 is still slightly compressed to ensure stable maintenance of the cam 30 in the position 0, without however transmitting a shock to the locking lever 60 at the end of the opening stroke.
  • the switch is closed from the previous position 0 after engagement of the operating lever on the axis 32, followed by a rotation of the crank 35 in the clockwise direction indicated by the arrow F (fig. 3).
  • the spring 24 is recompressed at the neutral point passage of the toggle joint when the pivot axis 36 arrives in the vicinity of the bottom 80 of the light 34.
  • the driving of the cam 30 by the axis 36 then causes an abrupt closure of the 'switch under the action of the relaxation of the spring 24.
  • the mechanism 10 then returns to the position shown in Figure 2. During the alternating angular travel between positions 0 and F the cranks 44, 56 and the transmission rod 50 remain immobile.
  • Grounding of the cables 18 of the cell by the abutment of the movable contacts 20 with the studs 22 of the corresponding poles is effected from the open position 0 (fig. 3) by rotation in the direction schedule (see arrow T) of the earthing crank 44 manually controlled by the operating lever (not shown) engaged on the pivot 48.
  • the axis 42 rotates by a quarter of clockwise turn around the pivot 48 causing a modification of the fulcrum of the spring 24 in the slide 46 of the lever 38.
  • FIG. 5 represents a variant of the mechanism 10 allowing the closing of the device followed by an operation of accumulation of the energy of the actuating spring 24 and. for hanging the control in a closed-armed position ready to open.
  • a lock 90 with the second crank 66 for locking the cam 30.
  • the lock 90 comprises a hooking lever 92 pivotally mounted on an axis 94 and cooperating at its free end 96 with a retaining spout 98 to hold the second crank 66 in abutment against the stop 72.
  • the spring 24 In the closed-armed position, the spring 24 is compressed to the maximum and the pivot axis 36 of the toggle rests against the bottom 82 of the light 34 after passing the neutral point of alignment of the toggle pins.
  • the position of the axis 36 is stable thanks to the locking of the crank 66 by the bolt 90.
  • the cam 30 is biased by the spring 24 in rotation towards the position 0, but this rotation is prevented by the locking of the crank 66 whose the cleat 74 is in contact with the ramp 76 of the cam 30.
  • a tripping device (not shown), formed for example by a striker trigger sensitive to the melting of a fuse associated with each pole of the switch, cooperates with the lever 92 of the latch 90 by rotating the axis 94 in clockwise indicated by arrow D.
  • This tripping order ensures the unlocking of the crank 66 which moves away from the stop 72 by turning around the axis 68 under the effect of the reaction due to the slope of the ramp 76 on the cleat 74.
  • This results in the unlocking of the cam 30 which pivots towards the intermediate position 0 (fig. 3) while ensuring the abrupt opening of the switch.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Lock And Its Accessories (AREA)
  • Mechanisms For Operating Contacts (AREA)

Description

L'invention concerne un mécanisme de manoeuvre de l'équipage mobile d'un appareillage multipolaire, de coupure et d'enclenchement incorporé dans une cellule électrique en liaison avec des câbles de raccordement, et susceptible d'occuper trois positions distinctes stables durant la course de déplacement du mécanisme, à savoir une première position F de service et de fermeture des contacts des pôles correspondants de l'appareillage, une deuxième position 0 intermédiaire d'ouverture des contacts et d'isolement des câbles, et une troisième position T de mise à la terre des câbles par la venue en engagement des contacts mobiles avec des plots correspondants au potentiel de la terre, la chaîne cinématique dudit mécanisme de manoeuvre comportant:

  • - un ressort accumulateur d'énergie, associé à un dispositif à genouillère à passage brusque de point mort pourvu d'un levier articulé sur un axe d'une manivelle de commande,
  • - un élément de transmission coopérant avec le dispositif à genouillère et solidaire dudit équipage mobile,
  • - et des moyens de blocage de l'élément de transmission dans chacune des trois positions F, O et T de l'appareillage.
The invention relates to a mechanism for maneuvering the mobile assembly of a multipole switchgear, switching off and interlocking incorporated in an electrical cell in connection with connection cables, and capable of occupying three distinct stable positions during the race. of movement of the mechanism, namely a first position F for service and closing of the contacts of the corresponding poles of the apparatus, a second intermediate position 0 for opening the contacts and insulating the cables, and a third position T for setting to the earth of the cables by the coming into engagement of the mobile contacts with studs corresponding to the earth potential, the kinematic chain of said operating mechanism comprising:
  • - an energy storage spring, associated with a toggle device with abrupt passing neutral position provided with a lever articulated on an axis of a control crank,
  • a transmission element cooperating with the toggle joint device and integral with said mobile assembly,
  • - And means for blocking the transmission element in each of the three positions F, O and T of the apparatus.

Un dispositif à genouillère du genre "tumbler" nécessite un parcours angulaire important de la manivelle de commande entre les positions F de fermeture et 0 d'ouverture. Le ressort d'actionnement est comprimé à mi- course au voisinage du point mort de la genouillère, et se trouve partiellement détendu en positions F et 0. On constate qu'il est difficule d'effectuer avec la même genouillère une course supplémentaire au-delà de la position 0 vers la position T de mise à la terre. Dans des mécanismes connus, par exemple dans alin décrit dans le document FR-A-2,181,436, on utilise généralement une commande additionnelle de mise à la terre indépendante de la genouillère principale et il est alors indispensable de prévoir des interverrouillages entre les deux, ce qui complique la réalisation du mécanisme.A toggle device of the "tumbler" type requires a significant angular travel of the control crank between the closed F and open 0 positions. The actuating spring is compressed halfway in the vicinity of the dead center of the toggle joint, and is partially relaxed in positions F and 0. It can be seen that it is difficult to carry out an additional stroke with the same knee lever. beyond position 0 to earth position T. In known mechanisms, for example in alin described in the document FR-A-2,181,436, an additional grounding control independent of the main toggle joint is generally used and it is then essential to provide interlockings between the two, which complicates the realization of the mechanism.

Le but de l'invention consiste à remédier à ces inconvénients et à réaliser un mécanisme de manoeuvre simple et fiable comprenant une genouillère susceptible d'actionner l'appareillage entre les trois positions F, 0 et T.The object of the invention is to remedy these drawbacks and to provide a simple and reliable operating mechanism comprising a toggle capable of actuating the apparatus between the three positions F, 0 and T.

Le mécanisme est caractérisé par le fait qu'il comprend de plus un organe de commande susceptible de se trouver soit dans une position de repos lorsque l'élément de transmission est déplacé par le dispositif à genouillère entre les dites première et deuxième positions F et 0, soit dans une position active de mise à la terre, ledit organe coopérant avec la genouillère et avec un premier moyen de blocage pour former en position de repos un point d'appui fixe au ressort d'actionnement et assurer le verrouillage du moyen de blocage lors de la venue en butée de l'élément de transmission dans ladite deuxième position 0 à partir de la dite première F, le passage de l'organe de commande de la position de repos vers la position active provoquant le déverrouillage du moyen de blocage et une modification du point d'appui et de la ligne d'action du ressort sollicité en compression pour entraîner l'élément de transmission débloqué depuis la dite deuxième position 0 intermédiaire vers la dite troisième position T de mise à la terre.The mechanism is characterized in that it further comprises a control member capable of being either in a rest position when the transmission element is moved by the toggle device between said first and second positions F and 0 , either in an active earthing position, said member cooperating with the toggle joint and with a first locking means to form in the rest position a fixed fulcrum at the actuating spring and ensure the locking of the locking means during the abutment of the transmission element in said second position 0 from said first F, the passage of the control member from the rest position to the active position causing the unlocking of the locking means and a modification of the fulcrum and of the line of action of the spring biased in compression to drive the transmission element released from said second intermediate position 0 towards said third th earthing position.

Selon une caractéristique de l'invention, l'organe de commande comprend une manivelle de mise à la terre dotée d'un axe monté à coulissement dans une glissière du levier de la genouillère pour constituer ledit point d'appui du ressort dont la ligne d'action est confondue avec la direction longitudinale du levier.According to a characteristic of the invention, the control member comprises a grounding crank provided with an axis slidably mounted in a slide of the lever of the toggle joint to constitute said spring fulcrum whose line d action is confused with the longitudinal direction of the lever.

Selon une autre caractéristique de l'invention, une tringle de liaison est agencée entre la manivelle de mise à la terre et le premier moyen de blocage de l'élément de transmission pour immobiliser la manivelle et ledit moyen de blocage respectivement en positions de repos et de verrouillage lorsque l'organe de transmission se déplace alternativement entre les positions F et 0 et pour transmettre successivement des ordres de déverrouillage et de verrouillage audit premier moyen de blocage lors du passage de la manivelle de la position de repos à la position active et inversement, permettant l'entraînement de l'organe de transmission respectivement de la position 0 vers la position T de mise à la terre, puis en sens inverse de la position T vers la position 0.According to another characteristic of the invention, a connecting rod is arranged between the earthing crank and the first locking means of the transmission element to immobilize the crank and said locking means respectively in the rest positions and for locking when the transmission member moves alternately between positions F and 0 and for successively transmitting unlocking and locking orders to said first locking means when the crank moves from the rest position to the active position and vice versa , allowing the drive of the transmission member respectively from position 0 to the earthed position T, then in the opposite direction from position T to position 0.

Selon un développement de l'invention, un verrou assure le blocage de la came en position F de fermeture lorsque l'axe de pivotement de la genouillère vient en butée du fond de la lumière après dépassement du point sort d'alignement des axes, la position de l'axe étant alors stable pour le maintien en compression maximum du ressort. Le mécanisme se trouve alors en position fermé - armé. Un dispositif de déclenchement, par exemple un déclencheur à percuteur d'un coupe-circuit à fusible combiné à l'organe de coupure, coopère avec le verrou pour provoquer le déblocage de la came qui pivote vers la position d'ouverture sous l'action de la détente du ressort.According to a development of the invention, a lock ensures the locking of the cam in the closed position F when the pivot axis of the toggle joint abuts the bottom of the lumen after passing the point comes out of alignment of the axes, the position of the axis then being stable for maintaining maximum compression of the spring. The mechanism is then in the closed - armed position. A triggering device, for example a striker trigger of a fuse circuit breaker combined with the breaking member, cooperates with the latch to cause the unlocking of the cam which pivots towards the open position under the action of the spring relaxation.

D'autres avantages et caractéristiques ressortiront plus clairement de l'exposé qui va suivre d'un mode de mise en oeuvre de l'invention, donné à titre d'exemple non limitatif et représenté aux dessins annexés, dans lesquels:

  • la figure 1 représente le schéma électrique d'une cellule équipée d'un appareillage électrique actionné par un mécanisme à trois positions;
  • les figures 2 à 4 montrent le mécanisme de manoeuvre selon l'invention, respectivement en positions F de fermeture, 0 d'ouverture, et T de mise à la tene;
  • la figure 5 représente une variante de réalisation du mécanisme en position fermé - armé.
Other advantages and characteristics will emerge more clearly from the description which follows of an embodiment of the invention, given by way of nonlimiting example and shown in the appended drawings, in which:
  • Figure 1 shows the electrical diagram of a cell equipped with electrical equipment actuated by a three-position mechanism;
  • FIGS. 2 to 4 show the operating mechanism according to the invention, respectively in positions F for closing, 0 for opening, and T for closing;
  • Figure 5 shows an alternative embodiment of the mechanism in the closed - armed position.

Sur la figure 1 est représenté schématiquement un mécanisme de manoeuvre 10 associé par un levier d'entraînement 12 en matériau isolant à l'équipage mobile d'un appareillage électrique 14 de coupure, notamment un interrupteur ou un disjoncteur multipolaire incorporé dans une cellule électrique à moyenne tension. L'appareillage 14 est inséré entre le jeu de barres 16 et les câbles de raccordement 18 de la cellule, chaque pôle comprenant un contact mobile 20 susceptible d'occuper trois positions distinctes stables durant la course de déplacement du mécanisme de manoeuvre 10, à savoir une première position F de service et de fermeture des contacts, une deuxième position 0 intermédiaire d'ouverture ou d'isolement, et une troisième position T de mise à la terre dans laquelle le câble 18 de la phase correspondante est relié électriquement par le contact mobile à un plot 22 au potentiel de la terre. Le contact mobile 20, en liaison électrique permanente avec le câble 18, est formé par un bras àhimé d'un mouvement de pivotement, mais il est entendu que le contact mobile de chaque pôle pourrait être constitué par une broche coulissante montée à translation altemée entre les positions extrêmes F et T. Le mécanisme de manoeuvre 10 est du type "tumbler" à dépassement brusque de point mort par l'intermédiaire d'une genouillère associée à un ressort d'actionnement 24 unique permettant d'obtenir un déplacement rapide de l'équipage mobile de l'appareillage 14 doté d'un pouvoir de coupure durant la course FO intervenant dans le sens horaire depuis la position F de fermeture vers la position 0 d'ouverture, et d'un pouvoir de fermeture durant les courses 0 F (sens inverse des aiguilles d'une montre depuis la position 0- vers la position F) et 0 T (sens horaire depuis la position 0 vers la position T).In FIG. 1 is shown schematically an operating mechanism 10 associated by a drive lever 12 of insulating material to the movable assembly of an electrical switchgear 14, in particular a switch or a multipole circuit breaker incorporated in an electrical cell with medium voltage. The apparatus 14 is inserted between the busbar 16 and the connection cables 18 of the cell, each pole comprising a movable contact 20 capable of occupying three distinct stable positions during the travel of movement of the operating mechanism 10, namely a first position F for operating and closing the contacts, a second intermediate position 0 for opening or isolation, and a third position T for earthing in which the cable 18 of the corresponding phase is electrically connected by the contact mobile to a stud 22 at the earth's potential. The movable contact 20, in permanent electrical connection with the cable 18, is formed by an arm concealed in a pivoting movement, but it is understood that the movable contact of each pole could be constituted by a sliding pin mounted in alternating translation between the extreme positions F and T. The operating mechanism 10 is of the "tumbler" type with sudden overrun of neutral position by means of a toggle associated with a single actuating spring 24 making it possible to obtain rapid movement of the mobile equipment of the apparatus 14 endowed with a breaking power during the race FO intervening in a clockwise direction from the closed position F towards the open position, and with a closed power during the races 0 F (anticlockwise from position 0- to position F) and 0 T (clockwise from position 0 to position T).

Selon l'invention, la chaîne cinématique du mécanisme de manoeuvre 10 (fig. 2 à 4) d'un interrupteur est logé entre deux platines 26, 28 métalliques et comporte une came 30 de commande solidaire du levier d'entraînement 12 isolant de l'équipage mobile. La came 30 est montée folle sur un axe 32 transversal porté par les platines 26, 28 parallèles et est munie d'une lumière 34 curviligne en forme de croissant centré sur l'axe 32 de commande. La genouillère est formée par une manivelle 35 de manoeuvre assujettie à l'axe 32 et comprenant à son extrémité opposée un axe de pivotement 36 articulé sur un levier 38 de support du ressort d'actionnement 24. Ce dernier, du type à compression, prend appui sur un épaulement 40 fixe du levier 38 et sur un point d'application variable formé par un axe 42 d'une manivelle coudée 44 de commande de mise à la terre. L'axe 42 est susceptible de se déplacer dans une glissière 46 ou coulisse formée par un trou oblong du levier 38 et s'étendant selon la ligne d'action du ressort 24. La manivelle 44 de mise à la terre est montée à rotation sur un pivot 48 et reste immobile lors de la course de l'équipage mobile entre les positions F de fermeture et 0 d'ouverture. Une tringle de transmission ou de liaison 50 est reliée mécaniquement par l'une de ses extrémités à un maneton 52 de la manivelle 44 de mise à la terre et par son extrémité opposée à un maneton 54 d'une première manivelle 56 de verrouillage de la came 30 en position 0 d'ouverture. L'axe de pivotement 36 de la genouillère se déplace dans la lumière 34 pour comprimer le ressort 24 entre les positions F et 0.According to the invention, the kinematic chain of the operating mechanism 10 (fig. 2 to 4) of a switch is housed between two metal plates 26, 28 and comprises a control cam 30 integral with the drive lever 12 insulating the mobile equipment. The cam 30 is mounted idly on a transverse axis 32 carried by the plates 26, 28 parallel and is provided with a curvilinear light 34 in the form of a crescent centered on the control axis 32. The toggle joint is formed by an operating crank 35 secured to the axis 32 and comprising at its opposite end a pivot axis 36 articulated on a lever 38 supporting the actuating spring 24. The latter, of the compression type, takes support on a fixed shoulder 40 of the lever 38 and on a variable point of application formed by an axis 42 of a bent crank 44 for grounding control. The axis 42 is capable of moving in a slide 46 or slide formed by an oblong hole in the lever 38 and extending along the line of action of the spring 24. The earthing crank 44 is rotatably mounted on a pivot 48 and remains stationary during the travel of the moving assembly between the closed F and open 0 positions. A transmission or connection rod 50 is mechanically connected by one of its ends to a crank pin 52 of the earthing crank 44 and by its end opposite to a crank pin 54 of a first crank 56 for locking the cam 30 in open position 0. The pivot axis 36 of the toggle moves in the slot 34 to compress the spring 24 between the positions F and 0.

La manivelle de verrouillage 56 est montée folle sur un axe 58 transversal de support d'un levier de blocage 60 à galet 62 coopérant avec une face d'appui 63 de la came 30 en position 0 d'ouverture. Un téton de déverrouillage 64 est agencé sur la manivelle 56 et coopère lors de la mise à la terre avec le levier de blocage 60 entraîné vers une position déverrouillée de la came 30. Une deuxième manivelle 66 de verrouillage de la came 30 en position de fermeture est montée à rotation sur un axe 68 et est sollicitée dans le sens horaire en appui contre une butée 72 par l'intermédiaire d'un ressort de traction 70. La manivelle 66 comprend un taquet 74 venant en engagement avec une rampe 76 inclinée de la came 30 en position F de fermeture.The locking crank 56 is loosely mounted on a transverse axis 58 supporting a blocking lever 60 with a roller 62 cooperating with a bearing face 63 of the cam 30 in the open 0 position. An unlocking lug 64 is arranged on the crank 56 and cooperates during earthing with the locking lever 60 driven towards an unlocked position of the cam 30. A second crank 66 for locking the cam 30 in the closed position is rotatably mounted on an axis 68 and is urged clockwise to bear against a stop 72 by means of a tension spring 70. The crank 66 comprises a cleat 74 coming into engagement with a ramp 76 inclined from the cam 30 in position F closed.

Le fonctionnement du mécanisme de manoeuvre 10 selon les figures 2 à 4 est le suivant:The operation of the operating mechanism 10 according to FIGS. 2 to 4 is as follows:

En position F de fermeture de l'interrupteur illustrée à la figure 2, la came 30 de commande du levier d'entraînement 12 se trouve en appui stable contre l'axe 68 de la deuxième manivelle 66 de verrouillage et est maintenue dans cette position par le ressort 24 associé à la genouillère et par le taquet 74 en butée contre la rampe 76. La manivelle 66 est bloquée contre la butée 72. L'axe de pivotement 36 de la genouillère est positionné dans le fond 80 de la lumière 34 au voisinage de l'axe 68, et le levier 38 est sensiblement perpendiculaire à la manivelle 35 de manoeuvre.In the closed position F of the switch illustrated in FIG. 2, the cam 30 for controlling the drive lever 12 is in stable abutment against the axis 68 of the second locking crank 66 and is held in this position by the spring 24 associated with the toggle joint and by the stop 74 in abutment against the ramp 76. The crank 66 is locked against the abutment 72. The pivot axis 36 of the toggle joint is positioned in the bottom 80 of the light 34 in the vicinity of the axis 68, and the lever 38 is substantially perpendicular to the operating crank 35.

L'ouverture de l'interrupteur s'opère après engagement d'un levier de manoeuvre (non représenté) sur l'axe de commande 32 suivi d'une rotation de la manivelle 35 dans le sens inverse des aiguilles d'une montre indiqué par la fleche 0 (fig. 2). La came 30 reste immobile et maintient l'équipage mobile de l'interrupteur en position de fermeture jusqu'au rattrapage de la course angulaire de l'axe de pivotement 36 dans la lumière 34 curviligne. En position instable d'alignement des axes 32, 36 et 42 de la genouillère, le ressort 24 d'actionnement est comprimé au maximum grâce au coulissement de la glissière 46 du levier 38 sur l'axe 42. Apres dépassement du point mort, l'axe 36 est en appui contre le fond 82 de la lumière 34, et la détente du ressort 24 provoque le pivotement de la came 30 dans le sens indiqué par la flèche 0, entraînant sous l'action de la force d'appui de la rampe inclinée 76 sur le taquet 74, le basculement automatique de la manivelle 66 de verrouillage autour de l'axe 68 et dans le sens inverse des aiguilles d'une montre. Il en résulte une ouverture brusque des contacts de l'interrupteur.The switch is opened after engagement of an operating lever (not shown) on the control shaft 32 followed by rotation of the crank 35 anticlockwise indicated by arrow 0 (fig. 2). The cam 30 remains stationary and keeps the moving element of the switch in the closed position until the angular travel of the pivot axis 36 is caught in the curvilinear slot 34. In the unstable alignment position of the axes 32, 36 and 42 of the toggle joint, the actuating spring 24 is compressed as much as possible by sliding the slide 46 of the lever 38 on the axis 42. After passing neutral, the axis 36 is resting against the bottom 82 of the light 34, and the relaxation of the spring 24 causes the cam 30 to pivot in the direction indicated by the arrow 0, causing under the action of the pressing force of the inclined ramp 76 on the stopper 74, the automatic tilting of the locking crank 66 around the axis 68 and anticlockwise. This results in a sudden opening of the switch contacts.

La figure 3 représente le mécanisme 10 en position 0 d'ouverture de l'interrupteur. La manivelle de verrouillage 66 est maintenue écartée de la butée 72 à l'encontre de la force du ressort 70 par la réaction du secteur 84 circulaire de la came 30 sur le taquet 74. La face d'appui 63 de la came 30 est en butée contre le galet 62 du levier de blocage 60 en position verrouillée. Le ressort 24 est encore faiblement comprimé pour assurer le maintien stable de la came 30 dans la position 0, sans pour autant transmettre un choc au levier de blocage 60 en fin de course d'ouverture.FIG. 3 represents the mechanism 10 in position 0 of opening of the switch. The locking crank 66 is kept apart from the stop 72 against the force of the spring 70 by the reaction of the circular sector 84 of the cam 30 on the cleat 74. The bearing face 63 of the cam 30 is in stop against the roller 62 of the locking lever 60 in the locked position. The spring 24 is still slightly compressed to ensure stable maintenance of the cam 30 in the position 0, without however transmitting a shock to the locking lever 60 at the end of the opening stroke.

Une fermeture de l'interrupteur à partir de la position 0 précédente intervient après engagement du levier de manouvre sur l'axe 32, suivi d'une rotation de la manivelle 35 dans le sens horaire indiqué par la flèche F (fig. 3). Le ressort 24 est recomprimé au passage de point mort de la genouillère lorsque l'axe de pivotement 36 arrive au voisinage du fond 80 de la lumière 34. L'entraînement de la came 30 par l'axe 36 provoque ensuite une fermeture brusque de l'interrupteur sous l'action de la détente du ressort 24. Le mécanisme 10 revient ensuite dans la position représentée à la figure 2. Durant la course angulaire alterné entre les positions 0 et F les manivelles 44, 56 et la tringle de transmission 50 restent immobiles.The switch is closed from the previous position 0 after engagement of the operating lever on the axis 32, followed by a rotation of the crank 35 in the clockwise direction indicated by the arrow F (fig. 3). The spring 24 is recompressed at the neutral point passage of the toggle joint when the pivot axis 36 arrives in the vicinity of the bottom 80 of the light 34. The driving of the cam 30 by the axis 36 then causes an abrupt closure of the 'switch under the action of the relaxation of the spring 24. The mechanism 10 then returns to the position shown in Figure 2. During the alternating angular travel between positions 0 and F the cranks 44, 56 and the transmission rod 50 remain immobile.

Une misé à la terre des câbles 18 de la cellule par la venue en butée des contacts mobiles 20 avec les plots 22 des pôles correspondants s'effectue à partir de la position 0 d'ouverture (fig. 3) par la rotation dans le sens horaire (voir flèche T) de la manivelle de mise à la terre 44 commandée manuellement par le levier de manoeuvre (non représenté) engagé sur le pivot 48. Durant cette rotation de la manivelle 44, l'axe 42 tourne d'un quart de tour dans le sens horaire autour du pivot 48 entraînant une modification du point d'appui du ressort 24 dans la glissière 46 du levier 38. Il en résulte d'une part la compression du ressort 24 d'actionnement qui était faiblement bandé en fin d'ouverture et d'autre part un redressement du levier 38 de la genouillère et de la ligne d'action du ressort 24 favorable à un pivotement brusque au-delà de la position 0 de la manivelle 35 d'entraînement de la came 30. Lors de la rotation dans le sens T de la manivelle 44 de mise à la terre, la tringle de transmission 50 provoque le basculement de la première manivelle 56 de verrouillage dont le téton 64 entraîne le levier de blocage 60 vers le bas en position déverrouillée. La libération du galet 62 due au déverrouillage du levier 60 rend ensuite possible le pivotement dans le sens inverse des aiguilles d'une montre de la came 30 vers la position T de mise à la terre illustrée à la figure 4.Grounding of the cables 18 of the cell by the abutment of the movable contacts 20 with the studs 22 of the corresponding poles is effected from the open position 0 (fig. 3) by rotation in the direction schedule (see arrow T) of the earthing crank 44 manually controlled by the operating lever (not shown) engaged on the pivot 48. During this rotation of the crank 44, the axis 42 rotates by a quarter of clockwise turn around the pivot 48 causing a modification of the fulcrum of the spring 24 in the slide 46 of the lever 38. This results, on the one hand, in the compression of the actuating spring 24 which was weakly wound at the end opening and on the other hand a straightening of the lever 38 of the toggle joint and of the line of action of the spring 24 favorable to a sudden pivoting beyond the position 0 of the crank 35 for driving the cam 30. rotation in direction T of the earthing crank 44, the rod transmission 50 causes the first locking crank 56 to tilt, the pin 64 of which drives the locking lever 60 downwards in the unlocked position. The release of the roller 62 due to the unlocking of the lever 60 then makes it possible to pivot anti-clockwise from the cam 30 to the grounding position T illustrated in FIG. 4.

Dans cette position T, le ressort 24 sollicite la came 30 en appui stable contre la butée 72 par l'intermédiaire du levier 60 et de la manivelle 56 en position déverrouillée. Le retour du mécanisme 10 de la position T de mise à la terre vers la position intermédiaire 0 d'ouverture est commandé par la rotation inverse de la manivelle 44 (voir sens 0 T de la flèche, fig. 4) vers sa position d'origine illustrée à la fig. 2 ou 3. La tringle de transmission 50 provoque la rotation de la manivelle 56 dans le sens inverse des aiguilles d'une montre vers la position verrouillée, et le galet 62 du levier de blocage 60 entraîne la came 30 par une manoeuvre lente dans le sens horaire jusqu'à la position intermédiaire 0 d'ouverture (fig. 3).In this position T, the spring 24 biases the cam 30 in stable abutment against the stop 72 through the lever 60 and the crank 56 in the unlocked position. The return of the mechanism 10 from the earthing position T to the intermediate opening position 0 is controlled by the reverse rotation of the crank 44 (see direction 0 T of the arrow, fig. 4) towards its position of origin illustrated in fig. 2 or 3. The transmission rod 50 causes the rotation of the crank 56 anti-clockwise towards the locked position, and the roller 62 of the locking lever 60 drives the cam 30 by a slow maneuver in the clockwise to the intermediate 0 opening position (fig. 3).

La figure 5 représente une variante du mécanisme 10 permetant la fermeture de l'appareil suivie d'une opération d'accumulation de l'énergie du ressort d'actionnement 24 et . d'accrochage de la commande dans une position fermée-armée prête à ouvrir. Pour réaliser cette fonction complémentaire il suffit d'associer un verrou 90 à la deuxième manivelle 66 de verrouillage de la came 30. Le verrou 90 comporte un levier d'accrochage 92 monté à pivotement sur un axe 94 et coopérant par son extrémité 96 libre avec un bec de retenue 98 pour maintenir la deuxième manivelle 66 en appui contre la butée 72. En position fermée-armée, le ressort 24 est comprimé au maximum et l'axe de pivotement 36 de la genouillère vient en butée du fond 82 de la lumière 34 après dépassement du point mort d'alignement des axes de la genouillère. La position de l'axe 36 est stable grâce au verrouillage de la manivelle 66 par le verrou 90. La came 30 est sollicitée par le ressort 24 en rotation vers la position 0, mais cette rotation est empêchée par le verrouillage de la manivelle 66 dont le taquet 74 est en appui avec la rampe 76 de la came 30.FIG. 5 represents a variant of the mechanism 10 allowing the closing of the device followed by an operation of accumulation of the energy of the actuating spring 24 and. for hanging the control in a closed-armed position ready to open. To achieve this additional function, it suffices to associate a lock 90 with the second crank 66 for locking the cam 30. The lock 90 comprises a hooking lever 92 pivotally mounted on an axis 94 and cooperating at its free end 96 with a retaining spout 98 to hold the second crank 66 in abutment against the stop 72. In the closed-armed position, the spring 24 is compressed to the maximum and the pivot axis 36 of the toggle rests against the bottom 82 of the light 34 after passing the neutral point of alignment of the toggle pins. The position of the axis 36 is stable thanks to the locking of the crank 66 by the bolt 90. The cam 30 is biased by the spring 24 in rotation towards the position 0, but this rotation is prevented by the locking of the crank 66 whose the cleat 74 is in contact with the ramp 76 of the cam 30.

Un dispositif de déclenchement (non représenté), formé par exemple par un déclencheur à percuteur sensible à la fusion d'un fusible associé à chaque pôle de l'interrupteur, coopère avec le levier 92 du verrou 90 en faisant tourner l'axe 94 dans le sens horaire indiqué par la fléche D. Cet ordre de déclenchement assure le déverrouillage de la manivelle 66 qui s'écarte de la butée 72 en tournant autour de l'axe 68 sous l'effet de la réaction due à la pente de la rampe 76 sur le taquet 74. Il en résulte le déblocage de la came 30 qui pivote vers la position 0 intermédiaire (fig. 3) en assurant l'ouverture brusque de l'interrupteur.A tripping device (not shown), formed for example by a striker trigger sensitive to the melting of a fuse associated with each pole of the switch, cooperates with the lever 92 of the latch 90 by rotating the axis 94 in clockwise indicated by arrow D. This tripping order ensures the unlocking of the crank 66 which moves away from the stop 72 by turning around the axis 68 under the effect of the reaction due to the slope of the ramp 76 on the cleat 74. This results in the unlocking of the cam 30 which pivots towards the intermediate position 0 (fig. 3) while ensuring the abrupt opening of the switch.

Claims (10)

1. Operating mechanism for the movable part of a multipole switching and closing apparatus enclosed in an electrical cell and connected to connection cables, adapted to be in three separate stable positions during the operating course of the mechanism (10), namely a first position (F) for service and for closing of the contacts of the corresponding poles of the apparatus, a second intermediary position (0) for opening the contacts and isolating the cables and a third position (T) for connecting the cables to earth, the movable contacts engaging corresponding terminals at the earth potential, the cinematic chain of said operating mechanism comprising:
- an energy storing spring (24) associated to a toggle assembly (35, 38) with a quick dead point passage provided with a lever (38) pivotally mounted on an axis (36) of an operating crank (35),
- a transmission device (30) cooperating with the toggle assembly (35, 38) and secured to said movable part,
- and locking means (66; 56, 60, 62; 72) of the transmission device (30) in each of the three apparatus positions (F, O, T),

characterized in that the mechanism (10) further comprises a control member (44) adapted to be either in a rest position when said transmission device (30) is moved by the toggle assembly (35, 38) between said first and second positions (F, 0), or in an active earthing position, said member (44) cooperating with said toggle assembly (35, 58) and with a first locking means (56, 62) in order to provide in the rest position a fixed appui point for the operating spring (24) and for latching the locking means (56, 62) when the transmission device (30) is arrived from said first position (F), into abutment into said second position (0), the movement of the control member (44) from the rest position towards the active position providing the unlocking of the locking means (56, 62) and a shifting of the appui point and of the action line of the compression biased spring (24) for moving the unlocked transmission device (30) from said second intermediary position (0) towards said third earthing position (T).
2. Operating mechanism according to. claim 1, characterized in that the control member (44) comprises an earthing crank (44) having an axis (42) slidably mounted within a slot (46) of the toggle lever (38) to form the appui point of the spring (24), the line of action therefrom corresponding to the length direction of the lever (38).
3. Operating mechanism according to claim 2, characterized in that a linking rod (50) is provided between the earthing crank (44) and the first transmission device (30) locking means (56, 62) for locking the crank (44) and said locking means (56, 62) respectively in the rest and locking positions when the transmission device (30) altemately moves between said first and second positions (F, O) and for successively transmit unlocking and locking orders to said first locking means at the passage of the crank (44) from the rest position to the active position and inversely for allowing movement of the transmission device (30) respectively from said second position (0) towards said third earthing position (T) and thereafter in an opposite direction from said third position (T) towards said second position (0).
4. Operating mechanism according to claim 3, characterized in that said first locking means comprises a locking crank (56), free mounted on an axis (58) and comprising a pin (54) pivotally mounted on the linking rod (50) and an unlocking finger (64) cooperating with a locking lever (60) mounted on the axis (58), the free end thereof forming an abutment for the transmission device (30) in said second open position (0).
5. Operating mechanism according to claim 1, 2, 3 or 4, characterized in that said transmission device comprises a cam (30) free mounted on support axis (32) of the crank (35) of the toggle assembly, the pivot axis (36) therefrom being guided within an arcuate slot (34) of cam (30) to allow the compression of the operating spring (24) at the passage of the dead point of the toggle assembly when the mechanism (10) is moved between said second and first positions (0, F).
6. Operating mechanism according to claim 5, characterized in that the cam (30) comprises a stop face (63) engaging the locking lever (60) in the locking position of the locking crank (56) when the cam (30) comes towards said second position (0) coming from said first position (F).
7. Operating mechanism according to claim 5 or 6, comprising a second locking crank (66) of cam (30) in said first closed position (F), characterized in that the cam (30) has a ramp (76) cooperating with a pin (74) of crank (66) to provoke unlocking of the latter after the passage of the toggle dead point when cam (30) is moved towards said second intermediary position (0).
8. Operating mechanism according to claim 7, characterized in that the same abutment (72) forms an appui on the one hand for the second locking crank (66) of cam (30) in said first closed position (F) and on the other hand for the first crank (56) in the unlocked position when cam (30) is moved towards said third earthing position (T).
9. Operating mechanism according to one of the claims 7 and 8, allowing the hooking of the mechanism in the closed contact and charged spring (24) position, characterized in that a latch (90) is associated to the second crank (66) for locking the latter in the locked position so that cam (30) remains in said first closed position (F) when the toggle axis (36) abuts against the end (82) of the slot (34) after passage of the dead point with aligned axes (32, 36, 42), the axis (36) position being then a stable one for maintaining the greatest spring (24) compression.
10. Operating mechanism according to claim 9, characterized in that a trip device cooperates with the latch (90) at the appearance of a fault, for providing the automatic unlocking of the second crank (66) and the cam (30) unlocking which pivots towards said second intermediary position (0) by the spring (24) discharge action.
EP19820400131 1981-02-13 1982-01-25 Operating mechanism for electrical switching apparatuses with three separate positions Expired EP0058585B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8103041A FR2500222A1 (en) 1981-02-13 1981-02-13 MANEUVER MECHANISM FOR ELECTRIC SWITCHING EQUIPMENT WITH THREE SEPARATE POSITIONS
FR8103041 1981-02-13

Publications (2)

Publication Number Publication Date
EP0058585A1 EP0058585A1 (en) 1982-08-25
EP0058585B1 true EP0058585B1 (en) 1984-09-19

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ID=9255269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820400131 Expired EP0058585B1 (en) 1981-02-13 1982-01-25 Operating mechanism for electrical switching apparatuses with three separate positions

Country Status (6)

Country Link
EP (1) EP0058585B1 (en)
JP (1) JPS57151120A (en)
AU (1) AU560470B2 (en)
DE (1) DE3260746D1 (en)
FR (1) FR2500222A1 (en)
YU (1) YU43786B (en)

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CN106449304A (en) * 2015-08-04 2017-02-22 浙江正泰电器股份有限公司 Circuit breaker interlocking device
CN106449302A (en) * 2015-08-04 2017-02-22 浙江正泰电器股份有限公司 Circuit breaker interlocking component

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DE3239839C1 (en) * 1982-10-27 1984-03-01 Siemens AG, 1000 Berlin und 8000 München Drive for an electrical three position switch
FR2609839B1 (en) * 1987-01-21 1989-04-07 Merlin Gerin MECHANISM FOR HANGING THE CONTROL OF A THREE-POSITION CIRCUIT BREAKER
FR2613123B1 (en) * 1987-03-27 1989-06-09 Merlin Gerin CONTROL MECHANISM OF A THREE-POSITION SWITCH
FR2651603B1 (en) * 1989-09-07 1991-11-08 Merlin Gerin CONTROL MECHANISM OF A HIGH VOLTAGE MULTIPOLAR SWITCH.
FR2660109B1 (en) * 1990-03-23 1992-06-05 Merlin Gerin CONTROL MECHANISM OF A THREE-POSITION SWITCH.
FR2706674B1 (en) * 1993-06-17 1995-09-08 Soule Sa Electrical line cut-off device with improved control means.
DE19904931C2 (en) * 1999-02-06 2001-11-29 Felten & Guilleaume Ag Switch drive for a circuit breaker
FR2827075B1 (en) * 2001-07-05 2003-09-19 Schneider Electric Ind Sa ELECTRICAL CUT-OFF AND SECTIONING APPARATUS HAVING A VACUUM BULB
FR2879340B1 (en) * 2004-12-13 2007-03-23 Pommier Sa MECHANISM FOR CONTROLLING A MULTIPOLAR ELECTRIC SWITCH
FR2916300B1 (en) * 2007-05-15 2009-07-10 Schneider Electric Ind Sas DEVICE FOR CONTROLLING THE CONTACT OR NON-CONTACT OF TWO PARTS AND AN ELECTRIC APPARATUS COMPRISING SUCH A DEVICE
DE102014203902A1 (en) * 2014-03-04 2015-09-10 Siemens Aktiengesellschaft Jump drive for a switching device
CN106997825B (en) * 2016-01-22 2019-11-19 沈阳昊诚电气有限公司 Environmentally friendly gas switch cabinet integral type spring operating mechanism
DE102016214783A1 (en) * 2016-08-09 2018-02-15 Siemens Aktiengesellschaft Jump drive and switching device with jump drive
CN108565152A (en) * 2018-06-21 2018-09-21 苏州达博思智能电网装备制造有限公司 It is a kind of to be configured at the special five anti-chain of breaker spring operating mechanism
CN109273313A (en) * 2018-10-23 2019-01-25 深圳市英豪电力科技有限公司 A kind of spring operating mechanism of three-station

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FR2181436B3 (en) * 1972-04-24 1975-06-20 Alsthom Cgee

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Publication number Priority date Publication date Assignee Title
CN106449304A (en) * 2015-08-04 2017-02-22 浙江正泰电器股份有限公司 Circuit breaker interlocking device
CN106449302A (en) * 2015-08-04 2017-02-22 浙江正泰电器股份有限公司 Circuit breaker interlocking component
CN106449304B (en) * 2015-08-04 2019-04-05 浙江正泰电器股份有限公司 Circuit breaker interlocking device
CN106449302B (en) * 2015-08-04 2019-07-12 浙江正泰电器股份有限公司 Breaker interlock assembly

Also Published As

Publication number Publication date
YU28082A (en) 1986-02-28
JPS57151120A (en) 1982-09-18
DE3260746D1 (en) 1984-10-25
FR2500222B1 (en) 1983-03-18
FR2500222A1 (en) 1982-08-20
YU43786B (en) 1989-12-31
AU560470B2 (en) 1987-04-09
EP0058585A1 (en) 1982-08-25
AU8043682A (en) 1982-08-19

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