EP1583119A2 - Locking system for a linear actuator - Google Patents

Locking system for a linear actuator Download PDF

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Publication number
EP1583119A2
EP1583119A2 EP05102351A EP05102351A EP1583119A2 EP 1583119 A2 EP1583119 A2 EP 1583119A2 EP 05102351 A EP05102351 A EP 05102351A EP 05102351 A EP05102351 A EP 05102351A EP 1583119 A2 EP1583119 A2 EP 1583119A2
Authority
EP
European Patent Office
Prior art keywords
rod
balls
locking system
movement
translation
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.)
Granted
Application number
EP05102351A
Other languages
German (de)
French (fr)
Other versions
EP1583119A3 (en
EP1583119B1 (en
Inventor
Robert Lüscher
Ernst Suter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GE Grid Switzerland GmbH
Original Assignee
Areva T&D AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Areva T&D AG filed Critical Areva T&D AG
Publication of EP1583119A2 publication Critical patent/EP1583119A2/en
Publication of EP1583119A3 publication Critical patent/EP1583119A3/en
Application granted granted Critical
Publication of EP1583119B1 publication Critical patent/EP1583119B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—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
    • H01H3/3031—Means for locking the spring in a charged state
    • 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
    • H01H3/3052—Linear spring motors
    • 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
    • H01H3/3031—Means for locking the spring in a charged state
    • H01H2003/3036—Means for locking the spring in a charged state using of balls or rollers in the locking device

Definitions

  • the present invention relates to a system for locking to immobilize or release the movement of translation of a rod of a linear control, the rod being movable in an axial direction between a first position and a second position spaced from a certain distance in the axial direction of the first position.
  • the invention relates more particularly to a locking system for mechanical control linear spring loaded used to move the crew of movable contacts of a high or medium circuit breaker voltage.
  • the two positions of the rod of the linear control correspond to both positions of the mobile contact crew the breaker.
  • the first position of the stem corresponds to the position of the contact crew when the breaker is open and the second position of the rod corresponds to the position of the moving contact crew when the breaker is closed.
  • the translation movement of the rod in the axial direction is maintained by springs and in particular coil springs which used to store kinetic energy to achieve successive switching of the circuit breaker.
  • Patent document US2003 / 0034331 is known, a linear command of the type indicated above with a locking system to immobilize or release the translation movement of the rod.
  • This system of lock is constituted by a ratchet controlled by an electric coil.
  • a locking system by snap is not suitable for spring loaded controls with springs exerting on the rod forces important.
  • this type of locking system is not suitable for locking the position of the rod in both directions of movement of the rod according to the axial direction.
  • Patent document EP0801406 is also known, a linear mechanical control with springs for high-voltage circuit breaker which includes a interlocking multiple ratchets controlled by electric coils.
  • the object of the invention is to propose a system locking to immobilize or release the movement translation of a rod of a linear control for circuit breaker high or medium voltage for example, which is reliable and fast and supports axial forces significant pressure on the stem during switching of the circuit breaker.
  • the subject of the invention is a system locking to immobilize or release the movement translation of a rod of a linear control, the rod being movable in an axial direction between a first position and a second position spaced from a certain distance in the axial direction of the first position, characterized in that it comprises two circumferential grooves formed on the stem and spaced apart from each other in the axial direction of the so-called certain distance and a plurality of distributed balls on the periphery of the rod to cooperate with said circumferential grooves, said balls being mounted in an annular cage surrounding the rod, said cage ring comprising a first fixed annular portion in the axial direction, surrounding the stem and crossing by the balls and a second moving part relative to the fixed annular part, surrounding the first part ring with the balls and arranged so as to be driven in rotation or in translation with respect to the first annular part under the effect of an axial force exerted on the stem to release the movement of translation of the stem.
  • the cage is arranged so that a rotational movement of the part movable around the rod in a first angular direction causes the release of the translation movement of the rod in one direction and a rotational movement of the moving part around the rod in a reverse direction causes immobilization of the translation movement of the stem.
  • the cage is arranged so that a translation movement according to the axial direction of the moving part according to a first sense causes the release of the translational motion of the stem and that a translation movement of the part in a reverse direction causes the immobilisation of the translation movement of the rod.
  • the part mobile includes grooves in which come to introduce the balls when the moving part occupies a angular position that causes the release of the translation movement of the rod and in which the moving part present between two consecutive grooves an inner surface that forms a ramp on which move the balls.
  • the part mobile includes a circumferential groove in which comes to get the balls when the moving part occupies a position in the axial direction A which causes the release of the translation movement of the stem and in which a flank of the throat circumferential stops to extend into one frustoconical bore which forms a ramp on which move the balls.
  • the grooves circumferences have inclined flanks with respect to the axis of the stem.
  • the part mobile is immobilized and mobilized through an electromagnet.
  • the system of lock includes a return spring that opposes the movement of rotation or translation of the part mobile.
  • an axial force exerted on the rod Linear Control Creates a Couple Through Interaction balls on the inclined sides of the throats and on the ramps between the splines of the cage that tends to drive the moving part of the cage in a movement rotating around the stem so that it is sufficient to release the rotary motion of the moving part of the cage to release the translational movement of the rod.
  • the liberation of the movement of translation of the stem can be performed in both direction of the axial direction and this in a fast way with little energy.
  • Figure 1 shows very schematically a linear mechanical control with springs equipping a high-voltage circuit breaker and provided with a locking according to the invention.
  • Figure 2 shows an enlarged command spring-loaded linear mechanics of Figure 1 with the locking system according to a first mode of embodiment of the invention.
  • Figure 3 is a partial sectional view schematic according to A-A in Figure 4 of the cage ring of the locking system according to a first embodiment of the invention.
  • FIG. 4 is a radial sectional view of the annular cage of the locking system according to a first embodiment of the invention.
  • FIG. 5 is an enlarged view in radial section part of the locking system cage according to a first embodiment of the invention.
  • Figure 6 schematically illustrates the locking system with an electromagnet for blocking the rotary movement of the annular cage according to a first embodiment of the invention.
  • Figure 7 is a partial sectional view schematic according to the axial direction A of the system of locking according to a second embodiment of the invention.
  • Figure 8 illustrates a partial sectional view schematic according to the axial direction A of the system of locking according to a third embodiment of the invention.
  • FIG. 1 there is shown very schematic an example of application of the system of lock according to the invention for an order linear mechanics with springs equipping a circuit breaker high voltage 1.
  • Circuit breaker 1 is shown here in open position.
  • Rod 2 of the mechanical control linear 3 is integral in motion of the movable contact 4 circuit breaker 1 which is separated here from the fixed contact circuit breaker.
  • FIG. 1 shows two springs 3A and 3B of the linear mechanical control 3 which are respectively the trigger spring for circuit breaker opening and interlocking spring for closing the circuit breaker.
  • the trigger spring 3A is relaxed while the interlocking spring 3B is compressed and ready to drive the rod 2 in the axial direction A for switching the circuit breaker to the position of closing.
  • the locking system 5 according to the invention blocks the translation movement of the rod 2 according to the axial direction A.
  • Figure 2 is an enlargement of the command linear spring 3 shown in Figure 1, according to a first embodiment of the invention.
  • the rod 2 is provided with two circumferential grooves 2A, 2B spaced apart from each other in the axial direction A of a distance corresponding to the distance traveled by the rod 2 when moved between a first position corresponding to the closed position of the circuit breaker and a second position corresponding to the opening position of the circuit breaker.
  • the locking system 5 is represented according to the first embodiment. However, it will be seen by following a locking system according to a second and a third embodiment of the invention can be applied to linear control 3.
  • the system of lock 5 comprises a plurality of balls 6 distributed on the circular periphery of the rod 2 for cooperate with one of the grooves 2A or 2B of the rod.
  • the 6 balls are mounted in an annular cage 7 fixed by through a disk 8 tubular housing 9 of the command 3.
  • two disks 10 and 11 are mounted fixed in the direction axial axis A, being spaced from each other according to the axial direction A, between the two springs 3A and 3B. These two disks 10, 11 are engaged in the housing tubular 9 of the order 3.
  • two other 12,13 support discs are arranged on both sides of the pair of disks 10 and 11 in the axial direction A, these discs 12, 13 being integral and movable according to the axial direction A with the rod 2.
  • the two springs 3A, 3B are coil springs which are arranged coaxially with each other around the stem 2.
  • the trigger spring 3A which is arranged here between the locking system 5 and the spring 3B, is maintained between the disks 10 and 12 while the interlocking spring 3B is maintained between the discs 11 and 13. Because of the position of the rod 2 in Figure 1 relative to the fixed disks 10 and 11, the engagement spring 3B kept compressed between the discs 11 and 13 exerts on the rod 2 a force axial which tends to move the rod 2 according to the direction axial upwards in Figure 2 so that a release of the locking system 5 (release of balls 6 of the groove 2B) will cause the switching of the circuit-breaker 1 in the parallel closed position at the compression of the spring 3A between the disks 10 and 12. In the closed position of circuit breaker 1, the throat 2A is in front of the locking system 5 which can be operated as described later for lock the translation movement of the rod.
  • FIG. 3 illustrates a partial sectional view schematic according to A-A in Figure 4 of the cage Annular 7 of a first embodiment of the locking system 5 according to the invention.
  • the annular cage 7 comprises a first annular ring shaped portion 7A which is mobile in rotation around a second annular portion fixed 7B also ring-shaped, the latter surrounds the rod 2 and is secured to the housing 9 of the control via disc 8 (not shown in this figure).
  • the part rotating ring 7A is arranged between a circumferential outer rib 7B 'of the part fixed ring 7B and a set of clamping rings 7B "which press the annular portion 7A against the rib 7B '.
  • the annular portion 7B comprises a set of radial holes 7C 'in which are housed respectively the balls 6.
  • the balls 6 are engaged both in the holes 7C 'and in the groove 2B to achieve a blocking of movement of the rod 2 in the axial direction A.
  • the throat circumferential 2B (like the groove 2A) has flanks 2B 'which are not perpendicular to the axis of the rod 2 but which are inclined at an angle ⁇ (of the order of 60 °) with respect to the axis of the rod 2. More particularly, in section the throat forms a U whose branches are flaring towards the opening of the U so as to form each a sort of ramp for balls 6.
  • the arrow FS shows the strength exerted by the engagement spring 3B on the rod 2.
  • the FR1 arrow represents a radial reaction force exerted on each ball 6 by the inclined flank 2B 'of the 2B throat. We understand that the direction of the FR1 force is perpendicular to the axial direction A.
  • FIG. 4 a view is shown schematic radial section of the annular cage 7 of the locking system 5 according to the first mode of embodiment of the invention where we see the part fixed ring 7B and the movable ring portion 7A in ring shape.
  • the mobile annular portion 7A comprises splines 30 distributed on the inner periphery whose number is identical to the number of balls 6 and in each of which a ball is retracted to release the circumferential groove 2B (or the groove 2A).
  • Each groove extends perpendicular to the axis of the rod 2.
  • Each groove 30 extends perpendicular to the axis of the rod 2.
  • the depth of the grooves 30 is slightly greater than the depth of the groove 2B (or the throat 2A).
  • each groove has a cross-section in the shape of "U", the branches of the "U” flaring towards the opening of the "U". More particularly, each flute has two flanks 31 which are inclined with respect to a radial direction at an angle of 30 °, for example.
  • the junction area between two consecutive grooves on the inner surface of the movable annular portion 7A also defines a kind ramp 32 which rises on the inside of part 7A from the cage to join the edge of an inclined flank 31 a flute 30 (the left flank in Figure 5).
  • the ramp 32 is arranged so that the reaction force FR1, transmitted through each of the balls 6 at the corresponding ramp 32, generates a tangential component FR2. The latter tends to to impose a rotational movement on the moving part 7A of the ring cage 7.
  • the direction of the FR2 force is the perpendicular to the direction of FR1.
  • Strength FR2 is applied to the point of contact between ball 6 and the corresponding ramp 32.
  • said ramp is an inclined plane of angle ⁇ (a few degrees) relative to the line perpendicular to the direction of FR1.
  • ⁇ a few degrees
  • the balls 6 are held in the holes of part 7B on one side by the groove 2B (or 2A) and the other by the ramp 32.
  • ramp 32 might not have a surface plane.
  • the combination of all the FR2 forces produced by the balls 6 on the ramps 32 is a pair MR2 which acts to rotate the movable portion 7A of the annular cage 7 in the direction indicated by the arrow MR2 (trigonometric direction).
  • MR2 trigonometric direction
  • the rotation of the mobile part 7A of the annular cage 7 in the direction of MR2 causes the balls 6 to coincide with the grooves 30, which allows the balls 6 to be released from the groove. groove 2B and thus the release of the translational movement of the rod 2.
  • FIG. 6 there is shown schematic an electromagnet 40 and a return spring 41 which respectively serve to block the movement of rotation of the part 7A of the annular cage and to bring back to a blocking position this part 7A of the annular cage.
  • the electromagnet 40 is attached to a frame 42 disposed inside the housing 9 and comprises by example a magnet "U" shaped 43, a rotating part 44 arranged in the air gap of the magnet, a support finger 45 and a return spring 46.
  • the mobile part 7A of the annular cage 7 has a radial handle on its outer periphery whose end is in abutment with piece 44.
  • the torque MR2 exerted on the annular cage is indicated on FIG.
  • the piece 44 In response to an electrical pulse applied to the magnet 43, the piece 44 is rotated in the air gap of the magnet 43 which releases accordingly the rotary motion of the annular cage 7 in the direction trigonometric indicated by the arrow MR2.
  • the rotation of the annular cage in the sense of MR2 causes a raising of the balls 6 in the grooves 30 and therefore the release of the translational movement of the rod 2. It This results in a circuit breaker switching in a closing position. In this position of circuit breaker, the annular cage 7 surrounds the throat annular 2A.
  • the locking system 5 operates from the same way for circuit breaker switching of a closing position at an open position.
  • a axial force exerted on the rod of the linear control creates a couple by the interaction of the balls on the inclined flanks of the throats of the stem and on the ramp in the extension of a flank of the throat of the party mobile which tends to drive the moving part of the cage in a translation movement according to the direction axial so that just release the movement translation of the mobile part of the cage for release the translation movement of the rod. It results that the release of the translation movement of the stem can be performed in both directions of the axial direction and this fast way with little energy.
  • Figure 7 illustrates a partial sectional view schematic according to the axial direction A of the system of locking according to a second embodiment of the invention.
  • the locking system according to the second mode embodiment of the invention is applied to a command mechanical spring for a high and medium circuit breaker voltage as described in the first embodiment and illustrated above by Figures 1 and 2.
  • FIG. 7 shows the rod 2 of the control with the grooves 2A and 2B.
  • the locking system 5 here comprises an annular cage 77 surrounding the rod 2 and in which are arranged the balls 6.
  • the cage ring 77 comprises a fixed annular portion 77B in ring shape having radial holes distributed over its circular periphery in which are arranged the 6.
  • the annular portion 77B is attached to the housing 9 (not shown in Figure 7) through the disc 78.
  • the annular cage 77 also includes a ring shaped ring shaped portion 77A fitted on the end of the rod 2 and which surrounds the annular ring-shaped portion 77B.
  • the part in sleeve form 77A is movable in the axial direction AT.
  • the movable portion in the form of sleeve 77A comprises an inner circumferential groove 730 surrounding the fixed ring 77B and in which the plurality of balls 6 retract when the movable bushing 77A occupies a certain position along the axis A corresponding to the release of the translation movement of the rod 2.
  • the 730 throat depth is slightly greater than the depth of the groove 2B (or the groove 2A).
  • This throat 730 has flanks 731 inclined at an angle of 30 °, for example, with respect to a radial direction.
  • One of 731 flanks is interrupted to extend into a bore frustoconical which is tightening towards the axis A in going towards the bottom of the 77A mobile socket to form an annular ramp 732.
  • said ramp 732 is an inclined plane of a few degrees from the axial direction A and a function similar to the plane 32 in FIG.
  • Figure 7 shows that the plurality of 6 balls is engaged, on one side, in the groove 2B and maintained on the other by the ramp 732.
  • the rod 2 of the control is thus maintained in the stationary position.
  • the arrow FS the force exerted by the locking spring 3B on the rod 2.
  • the arrow FR1 represents the reaction force transmitted by through the plurality of balls 6 to the socket mobile 77A.
  • the direction of the FR1 force is the radial direction at the point of contact between the corresponding ball 6 and the ramp 732.
  • This force FR1 is therefore applied to the 732 ramp so that it generates an axial force FR2 'acting to drive the translational movement of the movable sleeve 77A in the opposite direction of the force FS of the engagement spring 3B.
  • This translational movement of the movable sleeve 77A is blocked by an electromagnet 73, similar to that of the first embodiment and attached to the housing 9 (no shown in Figure 7).
  • the electromagnet 73 controls, via of a rotating part 74, the rotation of a connecting rod 75 in "L" shape mounted on pivot and connected by a hole oblong to the movable sleeve 77A, so that a rotation of the rotary part 74 drives, via the connecting rod 75, the release of the translation movement of the movable sleeve 77A driven by the effect of the FR2 'force.
  • a return spring 71 arranged coaxially to the rod 2 between a stop 76, integral with the housing 9, and the outer bottom of the sleeve 77A, acts to bring back the latter in immobilization position of the rod, that is, in the direction of the FS force.
  • the bottom of the movable bushing 77A is enlarged so as to abut on a disk 76 ', secured to the housing 9, thus limiting its stroke in the sense of FS force.
  • the disc 76 ' surrounds and guides the 77A mobile socket via a spacer 79 with low coefficient of friction.
  • the balls 6 move in the holes of the fixed ring 77B and retract into the groove 2A of the rod 2, pushed by the ramps 731 and 732 of the bushing mobile 77A.
  • the electromagnet acts to hold still the rod 2 of the control in this closed position circuit breaker.
  • the locking system according to the second mode realization works similarly for a circuit breaker switching from a closed position to an open position.
  • an axial force exerted on the rod of the control linear creates a couple by the interaction of the balls on the inclined sides of the canyon grooves and on the ramp in the extension of a flank of the throat of the party mobile which tends to drive the moving part of the cage in a translation movement according to the direction axial so that just release the movement translation of the mobile part of the cage for release the translation movement of the rod. It results that the release of the translation movement of the stem can be performed in both directions of the axial direction and this fast way with little energy.
  • Figure 8 illustrates a partial sectional view schematic according to the axial direction A of the system of locking according to a third embodiment of the invention.
  • the locking system according to the third embodiment of the invention is applied to a mechanical spring control for a high circuit breaker and medium voltage as described in the first mode of embodiment and illustrated above by FIGS. 2.
  • the rod 2 of the control with grooves 2A and 2B.
  • the system of lock 5 here comprises an annular cage 87 surrounding the rod 2 and in which are arranged the 6.
  • the annular cage 87 comprises a first ring-shaped fixed ring portion 87B having radial holes distributed on its circular periphery in which the balls 6 are arranged.
  • ring 87B is attached to the housing 9 (not shown on the FIG. 8) by a means not shown in FIG.
  • annular cage 87 also includes a second part circular cylindrical ring 87A surrounding the fixed annular portion 87B.
  • the cylindrical moving part 87A is movable in translation in the axial direction A.
  • a third fixed portion 84 in the form of a socket open bottom surrounds the movable portion 87A.
  • the socket 84 fitted by the end of the rod 2 has its bottom open to let the rod 2 pass during its movement of translation and is integral with the fixed annular portion 87B.
  • the movable ring 87A is provided with a throat inner circumferential circumference 830 that surrounds the ring fixed 87B and wherein the plurality of balls 6 retract when the movable ring 87A occupies a certain position along the axis A corresponding to the release of the translation movement of the rod 2.
  • the 830 throat depth is slightly greater than the depth of the groove 2B (or the groove 2A).
  • This throat 830 has flanks 831 inclined at an angle of 30 °, for example, with respect to a radial direction.
  • One of 831 flanks is interrupted to extend into a bore frustoconical which is tightening towards the axis A in going towards the bottom of the bush 84 to form a annular ramp 832.
  • said ramp 832 is a plane inclined by a few degrees relative to the axial direction A.
  • a spacer ring 83 with a low coefficient of friction set at the fixed ring 87B promotes the sliding of the ring mobile 87A.
  • This force FR1 is therefore applied to the 832 ramp so that it generates an axial force FR2 'acting to drive the translational movement of the movable sleeve 87A in the opposite direction of the force FS of the engagement spring 3B.
  • This translational movement of the movable bushing 87A is blocked by an electromagnet (not shown in Figure 8) fixed to the housing 9.
  • the socket open bottom 84 includes an opening arranged to allow to move a connecting rod 85 in the shape of "L" connected to the movable ring 87A.
  • the connecting rod 85 is connected to the outside of the cage 87A to the electromagnet (not shown in Figure 8) via a rotating part (not shown in Figure 8), so that a rotation of the latter drives, via the connecting rod 85, the release of the translation movement of the ring mobile 87A driven under the effect of the force FR2 '.
  • a return spring 81 arranged so coaxial with the rod 82 between the bottom of the bushing 84 and the movable ring 87A acts to bring back the movable ring 87A in the direction of the FS force.
  • the balls 6 move in the holes of the fixed ring 87B and retract into the groove 2A of the rod 2, pushed by the ramps 831 and 832 of the ring mobile 87A.
  • the electromagnet acts to hold still the rod 2 of the control in this closed position circuit breaker.
  • the locking system according to the third embodiment works similarly for circuit breaker switching from a position of closing at an open position.
  • the locking system according to the invention can apply to a linear mechanical spring drive for high or medium voltage disconnectors or at a linear mechanical spring control for disconnectors high or medium voltage earth.
  • Electric linear equipment 14 for drive and control the movement of the rod command 2 can be, for example, a servomotor connected to a rack. It is possible to replace springs the control completely and to control and control the movement of the rod by this servomotor only.
  • the angle of inclination of the flanks of the grooves 2A, 2B and plans 32, 732, 832 may be chosen from in order to obtain a rotation of the balls in the cage ring rather than a slip.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Transmission Devices (AREA)

Abstract

The system has multiple balls (6) distributed on the periphery of a rod to cooperate with two circumferential grooves (2A, 2B) formed on the rod. An axial force exerted on the rod creates a torque on inclined flanks of the grooves and on keyways between splines of an annular casing (7), through the balls to drive a movable part of the casing in rotary movement around the rod for liberating translation movement of the rod. An independent claim is also included for a linear mechanical control for a high or medium voltage circuit breaker comprising a locking system.

Description

La présente invention concerne un système de verrouillage pour immobiliser ou libérer le mouvement de translation d'une tige d'une commande linéaire, la tige étant mobile selon une direction axiale entre une première position et une deuxième position espacée d'une certaine distance selon la direction axiale de la première position.The present invention relates to a system for locking to immobilize or release the movement of translation of a rod of a linear control, the rod being movable in an axial direction between a first position and a second position spaced from a certain distance in the axial direction of the first position.

L'invention concerne plus particulièrement un système de verrouillage pour une commande mécanique linéaire à ressorts utilisée pour déplacer l'équipage de contacts mobiles d'un disjoncteur à haute ou moyenne tension.The invention relates more particularly to a locking system for mechanical control linear spring loaded used to move the crew of movable contacts of a high or medium circuit breaker voltage.

Dans un tel agencement, les deux positions de la tige de la commande linéaire correspondent aux deux positions de l'équipage de contacts mobiles du disjoncteur. Par exemple, la première position de la tige correspond à la position de l'équipage de contacts mobiles quand le disjoncteur est ouvert et la seconde position de la tige correspond à la position de l'équipage de contacts mobiles quand le disjoncteur est fermé. Par ailleurs, le mouvement de translation de la tige selon la direction axiale est entretenu par des ressorts et notamment des ressorts hélicoïdaux qui servent à stocker l'énergie cinétique pour réaliser des commutations successives du disjoncteur.In such an arrangement, the two positions of the rod of the linear control correspond to both positions of the mobile contact crew the breaker. For example, the first position of the stem corresponds to the position of the contact crew when the breaker is open and the second position of the rod corresponds to the position of the moving contact crew when the breaker is closed. Moreover, the translation movement of the rod in the axial direction is maintained by springs and in particular coil springs which used to store kinetic energy to achieve successive switching of the circuit breaker.

On connaít du document de brevet US2003/0034331, une commande linéaire du type indiqué ci-dessus avec un système de verrouillage pour immobiliser ou libérer le mouvement de translation de la tige. Ce système de verrouillage est constitué par un cliquet commandé par une bobine électrique. Un système de verrouillage par encliquetage n'est pas adapté à des commandes à ressorts avec des ressorts exerçant sur la tige des forces importantes. En plus, ce type de système de verrouillage n'est pas adapté pour verrouiller la position de la tige dans les deux sens de déplacement de la tige selon la direction axiale.Patent document US2003 / 0034331 is known, a linear command of the type indicated above with a locking system to immobilize or release the translation movement of the rod. This system of lock is constituted by a ratchet controlled by an electric coil. A locking system by snap is not suitable for spring loaded controls with springs exerting on the rod forces important. In addition, this type of locking system is not suitable for locking the position of the rod in both directions of movement of the rod according to the axial direction.

On connaít aussi du document de brevet EP0801406, une commande mécanique linéaire à ressorts pour disjoncteur à haute tension qui comprend un système de verrouillage à plusieurs cliquets commandés par des bobines électriques.Patent document EP0801406 is also known, a linear mechanical control with springs for high-voltage circuit breaker which includes a interlocking multiple ratchets controlled by electric coils.

On connaít encore du document de brevet EP1123571, une commande pour disjoncteur haute tension dans lequel le système de verrouillage est constitué par un moteur électrique qui met en mouvement une tige de la commande par l'intermédiaire d'une chaíne cinématique compliquée pour transformer un mouvement rotatif du moteur en un mouvement de translation de la tige. Un tel agencement présente en outre l'inconvénient d'être instable pour verrouiller la position de la tige.We still know the patent document EP1123571, a control for high voltage circuit breaker in which the locking system is constituted by an electric motor that sets in motion a rod of the control via a kinematic chain complicated to transform a rotary motion of the motor in a translational movement of the rod. Such arrangement also has the disadvantage of being unstable to lock the position of the rod.

Le but de l'invention est de proposer un système de verrouillage pour immobiliser ou libérer le mouvement de translation d'une tige d'une commande linéaire pour disjoncteur haute ou moyenne tension par exemple, qui soit fiable et rapide et qui supporte des forces axiales importantes exercées sur la tige lors des opérations de commutation du disjoncteur. The object of the invention is to propose a system locking to immobilize or release the movement translation of a rod of a linear control for circuit breaker high or medium voltage for example, which is reliable and fast and supports axial forces significant pressure on the stem during switching of the circuit breaker.

A cet effet, l'invention a pour objet un système de verrouillage pour immobiliser ou libérer le mouvement de translation d'une tige d'une commande linéaire, la tige étant mobile selon une direction axiale entre une première position et une deuxième position espacée d'une certaine distance selon la direction axiale de la première position, caractérisé en ce qu'il comprend deux gorges circonférentielles formées sur la tige et espacées l'une de l'autre selon la direction axiale de la dite certaine distance et une pluralité de billes réparties sur la périphérie de la tige pour coopérer avec lesdites gorges circonférentielles, lesdites billes étant montées dans une cage annulaire entourant la tige, ladite cage annulaire comprenant une première partie annulaire fixe selon la direction axiale, entourant la tige et traversée par les billes et une deuxième partie mobile par rapport à la partie annulaire fixe, entourant la première partie annulaire avec les billes et agencée de manière à être entraínée en rotation ou en translation par rapport à la première partie annulaire sous l'effet d'une force axiale exercée sur la tige pour libérer le mouvement de translation de la tige.For this purpose, the subject of the invention is a system locking to immobilize or release the movement translation of a rod of a linear control, the rod being movable in an axial direction between a first position and a second position spaced from a certain distance in the axial direction of the first position, characterized in that it comprises two circumferential grooves formed on the stem and spaced apart from each other in the axial direction of the so-called certain distance and a plurality of distributed balls on the periphery of the rod to cooperate with said circumferential grooves, said balls being mounted in an annular cage surrounding the rod, said cage ring comprising a first fixed annular portion in the axial direction, surrounding the stem and crossing by the balls and a second moving part relative to the fixed annular part, surrounding the first part ring with the balls and arranged so as to be driven in rotation or in translation with respect to the first annular part under the effect of an axial force exerted on the stem to release the movement of translation of the stem.

Selon un mode de réalisation particulier du système de verrouillage selon l'invention, la cage est agencée de sorte qu'un mouvement de rotation de la partie mobile autour de la tige selon un premier sens angulaire provoque la libération du mouvement de translation de la tige dans un sens et un mouvement de rotation de la partie mobile autour de la tige selon un sens inverse provoque l'immobilisation du mouvement de translation de la tige.According to a particular embodiment of the locking system according to the invention, the cage is arranged so that a rotational movement of the part movable around the rod in a first angular direction causes the release of the translation movement of the rod in one direction and a rotational movement of the moving part around the rod in a reverse direction causes immobilization of the translation movement of the stem.

Selon un autre mode de réalisation particulier du système de verrouillage selon l'invention, la cage est agencée de sorte qu'un mouvement de translation selon la direction axiale de la partie mobile selon un premier sens provoque la libération du mouvement de translation de la tige et qu'un mouvement de translation de la partie mobile selon un sens inverse provoque l'immobilisation du mouvement de translation de la tige.According to another particular embodiment of locking system according to the invention, the cage is arranged so that a translation movement according to the axial direction of the moving part according to a first sense causes the release of the translational motion of the stem and that a translation movement of the part in a reverse direction causes the immobilisation of the translation movement of the rod.

Selon un autre mode de réalisation particulier du système de verrouillage selon l'invention, la partie mobile comprend des cannelures dans lesquelles viennent s'introduire les billes quand la partie mobile occupe une position angulaire qui provoque la libération du mouvement de translation de la tige et dans lequel la partie mobile présente entre deux cannelures consécutives une surface intérieure qui forme une rampe sur laquelle se déplacent les billes.According to another particular embodiment of locking system according to the invention, the part mobile includes grooves in which come to introduce the balls when the moving part occupies a angular position that causes the release of the translation movement of the rod and in which the moving part present between two consecutive grooves an inner surface that forms a ramp on which move the balls.

Selon un autre mode de réalisation particulier du système de verrouillage selon l'invention, la partie mobile comprend une gorge circonférentielle dans laquelle vient s'introduire les billes quand la partie mobile occupe une position selon la direction axiale A qui provoque la libération du mouvement de translation de la tige et dans laquelle un flanc de la gorge circonférentielle s'interrompt pour se prolonger en un alésage tronconique qui forme une rampe sur laquelle se déplacent les billes. According to another particular embodiment of locking system according to the invention, the part mobile includes a circumferential groove in which comes to get the balls when the moving part occupies a position in the axial direction A which causes the release of the translation movement of the stem and in which a flank of the throat circumferential stops to extend into one frustoconical bore which forms a ramp on which move the balls.

Selon un autre mode de réalisation particulier du système de verrouillage selon l'invention, les gorges circonférentielles ont des flancs inclinés par rapport à l'axe de la tige.According to another particular embodiment of locking system according to the invention, the grooves circumferences have inclined flanks with respect to the axis of the stem.

Selon encore un mode de réalisation particulier du système de verrouillage selon l'invention, la partie mobile est immobilisée et mobilisée par l'intermédiaire d'un électro-aimant.According to yet another particular embodiment of the locking system according to the invention, the part mobile is immobilized and mobilized through an electromagnet.

Selon un mode de réalisation particulier du système de verrouillage selon l'invention, le système de verrouillage comprend un ressort de rappel qui s'oppose au mouvement de rotation ou de translation de la partie mobile.According to a particular embodiment of the locking system according to the invention, the system of lock includes a return spring that opposes the movement of rotation or translation of the part mobile.

Avec l'agencement du système de verrouillage selon l'invention, une force axiale exercée sur la tige de la commande linéaire crée un couple par l'interaction des billes sur les flancs inclinés des gorges et sur les rampes entre les cannelures de la cage qui tend à entraíner la partie mobile de la cage dans un mouvement rotatif autour de la tige ce qui fait qu'il suffit de libérer le mouvement rotatif de la partie mobile de la cage pour libérer le mouvement de translation de la tige. Il en résulte que la libération du mouvement de translation de la tige peut être effectuée dans les deux sens de la direction axiale et ceci de façon rapide avec peu d'énergie.With the arrangement of the locking system according to the invention, an axial force exerted on the rod Linear Control Creates a Couple Through Interaction balls on the inclined sides of the throats and on the ramps between the splines of the cage that tends to drive the moving part of the cage in a movement rotating around the stem so that it is sufficient to release the rotary motion of the moving part of the cage to release the translational movement of the rod. As a result, the liberation of the movement of translation of the stem can be performed in both direction of the axial direction and this in a fast way with little energy.

Un exemple d'un premier mode de réalisation du système de verrouillage selon l'invention est décrit plus en détail ci-après et illustré par les dessins. An example of a first embodiment of the locking system according to the invention is described more in detail below and illustrated by the drawings.

La figure 1 montre de façon très schématique une commande mécanique linéaire à ressorts équipant un disjoncteur à haute tension et munie d'un système de verrouillage selon l'invention.Figure 1 shows very schematically a linear mechanical control with springs equipping a high-voltage circuit breaker and provided with a locking according to the invention.

La figure 2 montre de façon agrandie la commande mécanique linéaire à ressorts de la figure 1 avec le système de verrouillage selon un premier mode de réalisation de l'invention.Figure 2 shows an enlarged command spring-loaded linear mechanics of Figure 1 with the locking system according to a first mode of embodiment of the invention.

La figure 3 est une vue partielle en coupe schématique selon A-A sur la figure 4 de la cage annulaire du système de verrouillage selon un premier mode de réalisation de l'invention.Figure 3 is a partial sectional view schematic according to A-A in Figure 4 of the cage ring of the locking system according to a first embodiment of the invention.

La figure 4 est une vue en coupe radiale de la cage annulaire du système de verrouillage selon un premier mode de réalisation de l'invention.FIG. 4 is a radial sectional view of the annular cage of the locking system according to a first embodiment of the invention.

La figure 5 est une vue agrandie en coupe radiale d'une partie de la cage du système de verrouillage selon un premier mode de réalisation de l'invention.FIG. 5 is an enlarged view in radial section part of the locking system cage according to a first embodiment of the invention.

La figure 6 illustre de façon schématique le système de verrouillage avec un électro-aimant servant au blocage du mouvement rotatif de la cage annulaire selon un premier mode de réalisation de l'invention.Figure 6 schematically illustrates the locking system with an electromagnet for blocking the rotary movement of the annular cage according to a first embodiment of the invention.

La figure 7 est une vue partielle en coupe schématique selon la direction axiale A du système de verrouillage selon un deuxième mode de réalisation de l'invention.Figure 7 is a partial sectional view schematic according to the axial direction A of the system of locking according to a second embodiment of the invention.

La figure 8 illustre une vue partielle en coupe schématique selon la direction axiale A du système de verrouillage selon un troisième mode de réalisation de l'invention. Figure 8 illustrates a partial sectional view schematic according to the axial direction A of the system of locking according to a third embodiment of the invention.

Sur la figure 1, on a représenté de façon très schématique un exemple d'application du système de verrouillage selon l'invention pour une commande mécanique linéaire à ressorts équipant un disjoncteur haute tension 1. Le disjoncteur 1 est montré ici en position ouverte. La tige 2 de la commande mécanique linéaire 3 est solidaire en mouvement du contact mobile 4 du disjoncteur 1 qui est donc séparé ici du contact fixe du disjoncteur.In Figure 1, there is shown very schematic an example of application of the system of lock according to the invention for an order linear mechanics with springs equipping a circuit breaker high voltage 1. Circuit breaker 1 is shown here in open position. Rod 2 of the mechanical control linear 3 is integral in motion of the movable contact 4 circuit breaker 1 which is separated here from the fixed contact circuit breaker.

On a représenté sur la figure 1 deux ressorts 3A et 3B de la commande mécanique linéaire 3 qui sont respectivement le ressort de déclenchement pour l'ouverture du disjoncteur et le ressort d'enclenchement pour la fermeture du disjoncteur. Comme visible sur la figure 1, le ressort de déclenchement 3A est détendu tandis que le ressort d'enclenchement 3B est comprimé et prêt à entraíner la tige 2 selon la direction axiale A pour une commutation du disjoncteur en position de fermeture. Le système de verrouillage 5 selon l'invention bloque le mouvement de translation de la tige 2 selon la direction axiale A.FIG. 1 shows two springs 3A and 3B of the linear mechanical control 3 which are respectively the trigger spring for circuit breaker opening and interlocking spring for closing the circuit breaker. As visible on the Figure 1, the trigger spring 3A is relaxed while the interlocking spring 3B is compressed and ready to drive the rod 2 in the axial direction A for switching the circuit breaker to the position of closing. The locking system 5 according to the invention blocks the translation movement of the rod 2 according to the axial direction A.

La figure 2 est un agrandissement de la commande linéaire à ressorts 3 montrée sur la figure 1, selon un premier mode de réalisation de l'invention.Figure 2 is an enlargement of the command linear spring 3 shown in Figure 1, according to a first embodiment of the invention.

Comme visible sur la figure 2, la tige 2 est munie de deux gorges circonférentielles 2A, 2B espacées l'une de l'autre selon la direction axiale A d'une distance correspondant à la distance parcourue par la tige 2 lorsqu'elle est déplacée entre une première position correspondant à la position de fermeture du disjoncteur et une seconde position correspondant à la position d'ouverture du disjoncteur.As can be seen in FIG. 2, the rod 2 is provided with two circumferential grooves 2A, 2B spaced apart from each other in the axial direction A of a distance corresponding to the distance traveled by the rod 2 when moved between a first position corresponding to the closed position of the circuit breaker and a second position corresponding to the opening position of the circuit breaker.

Sur la figure 2, on voit que le système de verrouillage 5 est engagé dans la gorge 2B de la tige 2 et maintient le disjoncteur en position d'ouverture.In Figure 2, we see that the system of lock 5 is engaged in the groove 2B of the rod 2 and keeps the circuit breaker in the open position.

Le système de verrouillage 5 est représenté selon le premier mode de réalisation. Toutefois, il sera vu par la suite qu'un système de verrouillage selon un deuxième et un troisième mode de réalisation de l'invention peut être appliqué à la commande linéaire 3. Le système de verrouillage 5 comprend une pluralité de billes 6 réparties sur la périphérie circulaire de la tige 2 pour coopérer avec l'une des gorges 2A ou 2B de la tige. Les billes 6 sont montées dans une cage annulaire 7 fixée par l'intermédiaire d'un disque 8 au boítier tubulaire 9 de la commande 3.The locking system 5 is represented according to the first embodiment. However, it will be seen by following a locking system according to a second and a third embodiment of the invention can be applied to linear control 3. The system of lock 5 comprises a plurality of balls 6 distributed on the circular periphery of the rod 2 for cooperate with one of the grooves 2A or 2B of the rod. The 6 balls are mounted in an annular cage 7 fixed by through a disk 8 tubular housing 9 of the command 3.

Comme visible sur la figure 2, deux disques d'appui 10 et 11 sont montés fixes selon la direction axiale A, en étant espacés l'un de l'autre selon la direction axiale A, entre les deux ressorts 3A et 3B. Ces deux disques 10, 11 sont en prise dans le boítier tubulaire 9 de la commande 3. Par ailleurs, deux autres disques d'appui 12,13 sont disposés de part et d'autre de la paire de disques 10 et 11 selon la direction axiale A, ces disques 12, 13 étant solidaires et mobiles selon la direction axiale A avec la tige 2. Les deux ressorts 3A, 3B sont des ressorts hélicoïdaux qui sont disposés coaxialement l'un par rapport à l'autre autour de la tige 2. Le ressort de déclenchement 3A, qui est disposé ici entre le système de verrouillage 5 et le ressort d'enclenchement 3B, est maintenu entre les disques 10 et 12 tandis que le ressort d'enclenchement 3B est maintenu entre les disques 11 et 13. Du fait de la position de la tige 2 sur la figure 1 par rapport aux disques fixes 10 et 11, le ressort d'enclenchement 3B maintenu comprimé entre les disques 11 et 13 exerce sur la tige 2 une force axiale qui tend à déplacer la tige 2 selon la direction axiale vers le haut sur la figure 2 de sorte qu'un relâchement du système de verrouillage 5 (libération des billes 6 de la gorge 2B) provoquera la commutation du disjoncteur 1 dans la position de fermeture parallèlement à la compression du ressort 3A entre les disques 10 et 12. En position de fermeture du disjoncteur 1, la gorge 2A se présente en face du système de verrouillage 5 qui pourra être actionné comme décrit plus loin pour verrouiller le mouvement de translation de la tige.As shown in Figure 2, two disks 10 and 11 are mounted fixed in the direction axial axis A, being spaced from each other according to the axial direction A, between the two springs 3A and 3B. These two disks 10, 11 are engaged in the housing tubular 9 of the order 3. In addition, two other 12,13 support discs are arranged on both sides of the pair of disks 10 and 11 in the axial direction A, these discs 12, 13 being integral and movable according to the axial direction A with the rod 2. The two springs 3A, 3B are coil springs which are arranged coaxially with each other around the stem 2. The trigger spring 3A, which is arranged here between the locking system 5 and the spring 3B, is maintained between the disks 10 and 12 while the interlocking spring 3B is maintained between the discs 11 and 13. Because of the position of the rod 2 in Figure 1 relative to the fixed disks 10 and 11, the engagement spring 3B kept compressed between the discs 11 and 13 exerts on the rod 2 a force axial which tends to move the rod 2 according to the direction axial upwards in Figure 2 so that a release of the locking system 5 (release of balls 6 of the groove 2B) will cause the switching of the circuit-breaker 1 in the parallel closed position at the compression of the spring 3A between the disks 10 and 12. In the closed position of circuit breaker 1, the throat 2A is in front of the locking system 5 which can be operated as described later for lock the translation movement of the rod.

On comprend donc que la détente du ressort de déclenchement 3A entraíne la compression du ressort d'enclenchement 3B et vice versa et que de l'énergie cinétique est transférée d'un ressort à l'autre. Les pertes d'énergie cinétique lors des commutations successives du disjoncteur sont compensées par un équipement électrique 14 placé fixe entre les deux ressorts 3A, 3B pour entraíner et contrôler le mouvement de translation de la tige 2 selon la direction axiale A.We therefore understand that the relaxation of the spring of trigger 3A causes compression of the spring 3B and vice versa and that energy kinetics is transferred from one spring to another. The loss of kinetic energy during switching successive circuit breakers are compensated by a 14 electrical equipment placed fixed between the two springs 3A, 3B to drive and control the movement of translation of the rod 2 in the axial direction A.

La figure 3 illustre une vue partielle en coupe schématique selon A-A sur la figure 4 de la cage annulaire 7 d'un premier exemple de réalisation du système de verrouillage 5 selon l'invention. Comme visible sur la figure 3, la cage annulaire 7 comprend une première partie annulaire 7A en forme de bague qui est mobile en rotation autour d'une seconde partie annulaire fixe 7B également en forme de bague, cette dernière entoure la tige 2 et est solidaire du boítier 9 de la commande par l'intermédiaire du disque 8 (non représenté sur cette figure).Figure 3 illustrates a partial sectional view schematic according to A-A in Figure 4 of the cage Annular 7 of a first embodiment of the locking system 5 according to the invention. As visible in FIG. 3, the annular cage 7 comprises a first annular ring shaped portion 7A which is mobile in rotation around a second annular portion fixed 7B also ring-shaped, the latter surrounds the rod 2 and is secured to the housing 9 of the control via disc 8 (not shown in this figure).

Comme visible sur la figure 3, la partie annulaire mobile en rotation 7A est disposée entre une nervure extérieure circonférentielle 7B' de la partie annulaire fixe 7B et un jeu d'anneaux de serrage 7B" qui mettent en appui la partie annulaire 7A contre la nervure 7B' .As shown in Figure 3, the part rotating ring 7A is arranged between a circumferential outer rib 7B 'of the part fixed ring 7B and a set of clamping rings 7B "which press the annular portion 7A against the rib 7B '.

La partie annulaire 7B comprend un ensemble de trous radiaux 7C' dans lesquels sont logées respectivement les billes 6. Sur la figure 3, on voit que les billes 6 sont engagées à la fois dans les trous 7C' et dans la gorge 2B pour réaliser un blocage du mouvement de la tige 2 selon la direction axiale A.The annular portion 7B comprises a set of radial holes 7C 'in which are housed respectively the balls 6. In Figure 3, we see that the balls 6 are engaged both in the holes 7C 'and in the groove 2B to achieve a blocking of movement of the rod 2 in the axial direction A.

Comme visible sur la figure 3, la gorge circonférentielle 2B (comme la gorge 2A) comporte des flancs 2B' qui ne sont pas perpendiculaires par rapport à l'axe de la tige 2 mais qui sont inclinés d'un angle β (de l'ordre de 60°) par rapport à l'axe de la tige 2. Plus particulièrement, en section la gorge forme un U dont les branches vont en s'évasant vers l'ouverture du U de sorte à former chacune une sorte de rampe pour les billes 6.As shown in Figure 3, the throat circumferential 2B (like the groove 2A) has flanks 2B 'which are not perpendicular to the axis of the rod 2 but which are inclined at an angle β (of the order of 60 °) with respect to the axis of the rod 2. More particularly, in section the throat forms a U whose branches are flaring towards the opening of the U so as to form each a sort of ramp for balls 6.

On a représenté par la flèche FS, la force exercée par le ressort d'enclenchement 3B sur la tige 2. La flèche FR1 représente une force de réaction radiale exercée sur chaque bille 6 par le flanc incliné 2B' de la gorge 2B. On comprend que la direction de la force FR1 est perpendiculaire a la direction axiale A.The arrow FS shows the strength exerted by the engagement spring 3B on the rod 2. The FR1 arrow represents a radial reaction force exerted on each ball 6 by the inclined flank 2B 'of the 2B throat. We understand that the direction of the FR1 force is perpendicular to the axial direction A.

Sur la figure 4, on a représenté une vue schématique en coupe radiale de la cage annulaire 7 du système de verrouillage 5 selon le premier mode de réalisation de l'invention où l'on voit la partie annulaire fixe 7B et la partie annulaire mobile 7A en forme de bague. La partie annulaire mobile 7A comprend des cannelures 30 réparties sur la périphérie intérieure dont le nombre est identique au nombre de billes 6 et dans chacune desquelles une bille s'escamote pour dégager la gorge circonférentielle 2B (ou la gorge 2A). Chaque cannelure s'étend perpendiculairement à l'axe de la tige 2. Chaque cannelure 30 s'étend perpendiculairement à l'axe de la tige 2. La profondeur des cannelures 30 est légèrement supérieure à la profondeur de la gorge 2B (ou la gorge 2A).In FIG. 4, a view is shown schematic radial section of the annular cage 7 of the locking system 5 according to the first mode of embodiment of the invention where we see the part fixed ring 7B and the movable ring portion 7A in ring shape. The mobile annular portion 7A comprises splines 30 distributed on the inner periphery whose number is identical to the number of balls 6 and in each of which a ball is retracted to release the circumferential groove 2B (or the groove 2A). Each groove extends perpendicular to the axis of the rod 2. Each groove 30 extends perpendicular to the axis of the rod 2. The depth of the grooves 30 is slightly greater than the depth of the groove 2B (or the throat 2A).

Comme visible sur la figure 4, chaque cannelure a une section transversale en forme de "U", les branches du "U" allant en s'évasant vers l'ouverture du "U". Plus particulièrement, chaque cannelure présente deux flancs 31 qui sont inclinés par rapport à une direction radiale d'un angle de 30°, par exemple.As can be seen in FIG. 4, each groove has a cross-section in the shape of "U", the branches of the "U" flaring towards the opening of the "U". More particularly, each flute has two flanks 31 which are inclined with respect to a radial direction at an angle of 30 °, for example.

Par ailleurs, comme cela apparaít encore mieux sur la figure 5, on voit que la zone de jonction entre deux cannelures consécutives sur la surface intérieure de la partie annulaire mobile 7A définit également une sorte de rampe 32 qui s'élève du côté intérieur de la partie 7A de la cage pour rejoindre le bord d'un flanc incliné 31 d'une cannelure 30 (le flanc gauche sur la figure 5). La rampe 32 est agencée de sorte que la force de réaction axiale FR1, transmise par l'intermédiaire de chacune des billes 6 à la rampe 32 correspondante, engendre une composante tangentielle FR2. Cette dernière tend à imposer un mouvement de rotation à la partie mobile 7A de la cage annulaire 7. La direction de la force FR2 est la droite perpendiculaire à la direction de FR1. La force FR2 est appliquée au point de contact entre la bille 6 et la rampe 32 correspondante.Moreover, as it appears even better in Figure 5, we see that the junction area between two consecutive grooves on the inner surface of the movable annular portion 7A also defines a kind ramp 32 which rises on the inside of part 7A from the cage to join the edge of an inclined flank 31 a flute 30 (the left flank in Figure 5). The ramp 32 is arranged so that the reaction force FR1, transmitted through each of the balls 6 at the corresponding ramp 32, generates a tangential component FR2. The latter tends to to impose a rotational movement on the moving part 7A of the ring cage 7. The direction of the FR2 force is the perpendicular to the direction of FR1. Strength FR2 is applied to the point of contact between ball 6 and the corresponding ramp 32.

Dans notre premier exemple de réalisation, ladite rampe est un plan incliné d' angle α (de quelques degrés) par rapport à la droite perpendiculaire à la direction de FR1. En position immobile de la tige 2, les billes 6 sont maintenues dans les trous de la partie 7B d'un côté par la gorge 2B (ou 2A) et de l'autre par la rampe 32. Bien entendu, la rampe 32 pourrait ne pas avoir une surface plane.In our first embodiment, said ramp is an inclined plane of angle α (a few degrees) relative to the line perpendicular to the direction of FR1. In stationary position of the rod 2, the balls 6 are held in the holes of part 7B on one side by the groove 2B (or 2A) and the other by the ramp 32. Well heard, ramp 32 might not have a surface plane.

La combinaison de l'ensemble des forces FR2 produites par les billes 6 sur les rampes 32 est un couple MR2 qui agit pour entraíner en rotation la partie mobile 7A de la cage annulaire 7 selon le sens indiqué par la flèche MR2 (sens trigonométrique). Comme on peut le comprendre sur la figure 4, la rotation de la partie mobile 7A de la cage annulaire 7 selon le sens de MR2 provoque la mise en coïncidence des billes 6 avec les cannelures 30 ce qui permet le dégagement des billes 6 hors de la gorge 2B et donc la libération du mouvement en translation de la tige 2. La valeur du couple MR2 peut être optimisée par le choix des angles α et β, selon la relation simplifiée suivante : MR2 = r * tg(α) * tg(β) * FS où r désigne le rayon du centre de la cage 7 au point d'appui considéré d'une bille sur une rampe 32 correspondante et tg désigne la fonction trigonométrique tangente.The combination of all the FR2 forces produced by the balls 6 on the ramps 32 is a pair MR2 which acts to rotate the movable portion 7A of the annular cage 7 in the direction indicated by the arrow MR2 (trigonometric direction). As can be understood in FIG. 4, the rotation of the mobile part 7A of the annular cage 7 in the direction of MR2 causes the balls 6 to coincide with the grooves 30, which allows the balls 6 to be released from the groove. groove 2B and thus the release of the translational movement of the rod 2. The value of the torque MR2 can be optimized by the choice of the angles α and β, according to the following simplified relationship: MR2 = r * tg (α) * tg (β) * FS where r denotes the radius of the center of the cage 7 at the point of support considered of a ball on a corresponding ramp 32 and tg denotes the tangent trigonometric function.

Cette relation ne prend pas en compte les coefficients de frottement.This relationship does not take into account the coefficients of friction.

Sur la figure 6, on a représenté de façon schématique un électro-aimant 40 et un ressort de rappel 41 qui servent respectivement à bloquer le mouvement de rotation de la partie 7A de la cage annulaire et à ramener à une position de blocage cette partie 7A de la cage annulaire. L'électro-aimant 40 est fixé à un bâti 42 disposé à l'intérieur du boítier 9 et comprend par exemple un aimant en forme de "U" 43, une pièce rotative 44 disposée dans l'entrefer de l'aimant, un doigt d'appui 45 et un ressort de rappel 46. Comme visible sur la figure 6, la partie mobile 7A de la cage annulaire 7 présente un manche radial sur sa périphérie extérieure dont l'extrémité est en butée contre la pièce 44. Le couple MR2 exercé sur la cage annulaire est indiqué sur la figure 6 et on voit que le ressort de rappel 41 exerce une force sur le manche de la partie mobile 7A qui s'oppose au couple MR2. Sur la figure 6, la pièce 44 est bloquée en position, appuyant sur le support de l'électro-aimant d'un côté et tiré par le ressort de rappel 46 de l'autre côté. In Figure 6, there is shown schematic an electromagnet 40 and a return spring 41 which respectively serve to block the movement of rotation of the part 7A of the annular cage and to bring back to a blocking position this part 7A of the annular cage. The electromagnet 40 is attached to a frame 42 disposed inside the housing 9 and comprises by example a magnet "U" shaped 43, a rotating part 44 arranged in the air gap of the magnet, a support finger 45 and a return spring 46. As visible on the FIG. 6, the mobile part 7A of the annular cage 7 has a radial handle on its outer periphery whose end is in abutment with piece 44. The torque MR2 exerted on the annular cage is indicated on FIG. 6 shows that the return spring 41 exerts a force on the handle of the moving part 7A which opposes the MR2 pair. In Figure 6, Exhibit 44 is blocked in position, pressing the support of the electromagnet on one side and pulled by the spring of reminder 46 on the other side.

En réponse à une impulsion électrique appliquée à l'aimant 43, la pièce 44 est entraínée en rotation dans l'entrefer de l'aimant 43 ce qui libère en conséquence le mouvement rotatif de la cage annulaire 7 dans le sens trigonométrique indiqué par la flèche MR2. La rotation de la cage annulaire selon le sens de MR2 entraíne une remontée des billes 6 dans les cannelures 30 et donc la libération du mouvement en translation de la tige 2. Il en résulte une commutation du disjoncteur dans une position de fermeture. Dans cette position du disjoncteur, la cage annulaire 7 entoure la gorge annulaire 2A. Sous l'action du ressort de rappel 41 tendant à faire tourner la partie mobile 7A de la cage annulaire 7 dans le sens inverse du sens trigonométrique, les billes 6 sont engagées dans la gorge circonférentielle 2A pour un nouveau blocage du mouvement en translation de la tige 2 tandis que la pièce rotative 44 est amenée dans une position de blocage sous l'action du ressort de rappel 46 tendu entre la pièce 44 et le doigt 45.In response to an electrical pulse applied to the magnet 43, the piece 44 is rotated in the air gap of the magnet 43 which releases accordingly the rotary motion of the annular cage 7 in the direction trigonometric indicated by the arrow MR2. The rotation of the annular cage in the sense of MR2 causes a raising of the balls 6 in the grooves 30 and therefore the release of the translational movement of the rod 2. It This results in a circuit breaker switching in a closing position. In this position of circuit breaker, the annular cage 7 surrounds the throat annular 2A. Under the action of the return spring 41 tending to rotate the movable portion 7A of the cage ring 7 in the opposite direction of the trigonometric direction, the balls 6 are engaged in the throat circumferential 2A for a new blocking of the movement in translation of the rod 2 while the rotating part 44 is brought into a locking position under the action of the return spring 46 stretched between the piece 44 and the finger 45.

Le système de verrouillage 5 fonctionne de la même manière pour une commutation du disjoncteur d'une position de fermeture à une position d'ouverture.The locking system 5 operates from the same way for circuit breaker switching of a closing position at an open position.

Avec l'agencement du système de verrouillage selon un deuxième mode de réalisation de l'invention, une force axiale exercée sur la tige de la commande linéaire crée un couple par l'interaction des billes sur les flancs inclinés des gorges de la tige et sur la rampe dans le prolongement d'un flanc de la gorge de la partie mobile qui tend à entraíner la partie mobile de la cage dans un mouvement de translation selon la direction axiale ce qui fait qu'il suffit de libérer le mouvement de translation de la partie mobile de la cage pour libérer le mouvement de translation de la tige. Il en résulte que la libération du mouvement de translation de la tige peut être effectuée dans les deux sens de la direction axiale et ceci de façon rapide avec peu d'énergie.With the arrangement of the locking system according to a second embodiment of the invention, a axial force exerted on the rod of the linear control creates a couple by the interaction of the balls on the inclined flanks of the throats of the stem and on the ramp in the extension of a flank of the throat of the party mobile which tends to drive the moving part of the cage in a translation movement according to the direction axial so that just release the movement translation of the mobile part of the cage for release the translation movement of the rod. It results that the release of the translation movement of the stem can be performed in both directions of the axial direction and this fast way with little energy.

La figure 7 illustre une vue partielle en coupe schématique selon la direction axiale A du système de verrouillage selon un deuxième mode de réalisation de l'invention.Figure 7 illustrates a partial sectional view schematic according to the axial direction A of the system of locking according to a second embodiment of the invention.

Le système de verrouillage selon le deuxième mode de réalisation de l'invention est appliqué à une commande mécanique à ressorts pour un disjoncteur haute et moyenne tension comme décrite dans le premier mode de réalisation et illustrée ci-dessus par les figures 1 et 2. Sur la figure 7, on a représenté la tige 2 de la commande avec les gorges 2A et 2B. Le système de verrouillage 5 comprend ici une cage annulaire 77 entourant la tige 2 et dans laquelle sont disposées les billes 6. La cage annulaire 77 comprend une partie annulaire fixe 77B en forme de bague comportant des trous radiaux répartis sur sa périphérie circulaire dans lesquels sont disposées les billes 6. La partie annulaire 77B est fixée au boítier 9 (non montré sur la figure 7) par l'intermédiaire du disque 78. La cage annulaire 77 comprend également une partie annulaire en forme de douille cylindrique 77A emmanchée sur l'extrémité de la tige 2 et qui entoure la partie annulaire en forme de bague 77B. La partie en forme de douille 77A est mobile selon la direction axiale A.The locking system according to the second mode embodiment of the invention is applied to a command mechanical spring for a high and medium circuit breaker voltage as described in the first embodiment and illustrated above by Figures 1 and 2. On the FIG. 7 shows the rod 2 of the control with the grooves 2A and 2B. The locking system 5 here comprises an annular cage 77 surrounding the rod 2 and in which are arranged the balls 6. The cage ring 77 comprises a fixed annular portion 77B in ring shape having radial holes distributed over its circular periphery in which are arranged the 6. The annular portion 77B is attached to the housing 9 (not shown in Figure 7) through the disc 78. The annular cage 77 also includes a ring shaped ring shaped portion 77A fitted on the end of the rod 2 and which surrounds the annular ring-shaped portion 77B. The part in sleeve form 77A is movable in the axial direction AT.

La partie mobile en forme de douille 77A comprend une gorge circonférentielle intérieure 730 qui entoure la bague fixe 77B et dans laquelle la pluralité de billes 6 s'escamotent quand la douille mobile 77A occupe une certaine position le long de l'axe A correspondant à la libération du mouvement de translation de la tige 2. La profondeur de la gorge 730 est légèrement supérieure à la profondeur de la gorge 2B (ou la gorge 2A). Cette gorge 730 présente des flancs 731 inclinés d'un angle de 30°, par exemple, par rapport à une direction radiale. Un des flancs 731 est interrompu pour se prolonger en un alésage tronconique qui va en se resserrant vers l'axe A en allant vers le fond de la douille mobile 77A pour former une rampe annulaire 732. Dans notre exemple de réalisation, ladite rampe 732 est un plan incliné de quelques degrés par rapport à la direction axiale A et à une fonction analogue au plan 32 sur la figure 5.The movable portion in the form of sleeve 77A comprises an inner circumferential groove 730 surrounding the fixed ring 77B and in which the plurality of balls 6 retract when the movable bushing 77A occupies a certain position along the axis A corresponding to the release of the translation movement of the rod 2. The 730 throat depth is slightly greater than the depth of the groove 2B (or the groove 2A). This throat 730 has flanks 731 inclined at an angle of 30 °, for example, with respect to a radial direction. One of 731 flanks is interrupted to extend into a bore frustoconical which is tightening towards the axis A in going towards the bottom of the 77A mobile socket to form an annular ramp 732. In our example of realization, said ramp 732 is an inclined plane of a few degrees from the axial direction A and a function similar to the plane 32 in FIG.

On voit sur la figure 7 que la pluralité de billes 6 est engagée, d'un côté, dans la gorge 2B et maintenue de l'autre par la rampe 732. La tige 2 de la commande est donc maintenue en position immobile. On a représenté par la flèche FS, la force exercée par le ressort d'enclenchement 3B sur la tige 2. La flèche FR1 représente la force de réaction transmise par l'intermédiaire de la pluralité de billes 6 à la douille mobile 77A. On comprend que la direction de la force FR1 est la direction radiale au point de contact entre la bille 6 correspondante et la rampe 732. Cette force FR1 est donc appliquée à la rampe 732 de sorte qu'elle engendre une force axiale FR2' agissant pour entraíner le mouvement de translation de la douille mobile 77A dans le sens opposé de la force FS du ressort d'enclenchement 3B. Ce mouvement de translation de la douille mobile 77A est bloqué par un électroaimant 73, similaire à celui du premier mode de réalisation et fixé au boítier 9 (non montré sur la figure 7).Figure 7 shows that the plurality of 6 balls is engaged, on one side, in the groove 2B and maintained on the other by the ramp 732. The rod 2 of the control is thus maintained in the stationary position. We have represented by the arrow FS, the force exerted by the locking spring 3B on the rod 2. The arrow FR1 represents the reaction force transmitted by through the plurality of balls 6 to the socket mobile 77A. We understand that the direction of the FR1 force is the radial direction at the point of contact between the corresponding ball 6 and the ramp 732. This force FR1 is therefore applied to the 732 ramp so that it generates an axial force FR2 'acting to drive the translational movement of the movable sleeve 77A in the opposite direction of the force FS of the engagement spring 3B. This translational movement of the movable sleeve 77A is blocked by an electromagnet 73, similar to that of the first embodiment and attached to the housing 9 (no shown in Figure 7).

L'électroaimant 73 commande, par l'intermédiaire d'une pièce rotative 74, la rotation d'une bielle 75 en forme de "L" montée sur pivot et reliée par un trou oblong à la douille mobile 77A, de sorte qu'une rotation de la pièce rotative 74 entraíne, par l'intermédiaire de la bielle 75, la libération du mouvement de translation de la douille mobile 77A entraíné sous l'effet de la force FR2'.The electromagnet 73 controls, via of a rotating part 74, the rotation of a connecting rod 75 in "L" shape mounted on pivot and connected by a hole oblong to the movable sleeve 77A, so that a rotation of the rotary part 74 drives, via the connecting rod 75, the release of the translation movement of the movable sleeve 77A driven by the effect of the FR2 'force.

Les billes 6 se déplacent alors dans les trous de la bague fixe 77B et s'escamotent dans la gorge 730 de la douille mobile 77A. La tige 2 est libérée et subit un mouvement de translation entraínée par la force FS. Il en résulte une commutation du disjoncteur en position de fermeture. Dans cette position du disjoncteur, la gorge 730 de la douille mobile 77A fait face à la gorge circonférentielle 2A.The balls 6 then move in the holes of the fixed ring 77B and retract into the groove 730 of the mobile socket 77A. Rod 2 is released and undergoes a translation movement driven by the FS force. It results in a circuit breaker switching to the position of closing. In this position of the circuit breaker, the throat 730 of the 77A movable sleeve faces the throat circumferential 2A.

Un ressort de rappel 71, disposé coaxialement à la tige 2 entre une butée 76, solidaire du boítier 9, et le fond extérieur de la douille 77A, agit pour ramener cette dernière en position d'immobilisation de la tige, c'est à dire dans le sens de la force FS. Comme visible sur la figure 7, le fond de la douille mobile 77A est élargie de manière à venir en butée sur un disque 76', solidaire du boítier 9, limitant ainsi sa course dans le sens de la force FS. Le disque 76' entoure et guide la douille mobile 77A par l'intermédiaire d'une entretoise 79 à faible coefficient de frottement. Une deuxième entretoise 79' à faible coefficient de frottement solidaire de la bague fixe 77B guide et facilite le glissement de la douille mobile 77A.A return spring 71, arranged coaxially to the rod 2 between a stop 76, integral with the housing 9, and the outer bottom of the sleeve 77A, acts to bring back the latter in immobilization position of the rod, that is, in the direction of the FS force. As visible in FIG. 7, the bottom of the movable bushing 77A is enlarged so as to abut on a disk 76 ', secured to the housing 9, thus limiting its stroke in the sense of FS force. The disc 76 'surrounds and guides the 77A mobile socket via a spacer 79 with low coefficient of friction. A second spacer 79 'with low coefficient of friction secured to the fixed ring 77B guide and facilitates the sliding of the movable sleeve 77A.

Les billes 6 se déplacent dans les trous de la bague fixe 77B et s'escamotent dans la gorge 2A de la tige 2, poussées par les rampes 731 et 732 de la douille mobile 77A. L'électroaimant agit pour maintenir immobile la tige 2 de la commande dans cette position de fermeture du disjoncteur.The balls 6 move in the holes of the fixed ring 77B and retract into the groove 2A of the rod 2, pushed by the ramps 731 and 732 of the bushing mobile 77A. The electromagnet acts to hold still the rod 2 of the control in this closed position circuit breaker.

Le système de verrouillage selon le deuxième mode de réalisation fonctionne de manière similaire pour une commutation du disjoncteur d'une position de fermeture à une position d'ouverture.The locking system according to the second mode realization works similarly for a circuit breaker switching from a closed position to an open position.

Avec l'agencement du système de verrouillage selon un troisième mode de réalisation de l'invention, une force axiale exercée sur la tige de la commande linéaire crée un couple par l'interaction des billes sur les flancs inclinés des gorges de la tige et sur la rampe dans le prolongement d'un flanc de la gorge de la partie mobile qui tend à entraíner la partie mobile de la cage dans un mouvement de translation selon la direction axiale ce qui fait qu'il suffit de libérer le mouvement de translation de la partie mobile de la cage pour libérer le mouvement de translation de la tige. Il en résulte que la libération du mouvement de translation de la tige peut être effectuée dans les deux sens de la direction axiale et ceci de façon rapide avec peu d'énergie.With the arrangement of the locking system according to a third embodiment of the invention, an axial force exerted on the rod of the control linear creates a couple by the interaction of the balls on the inclined sides of the canyon grooves and on the ramp in the extension of a flank of the throat of the party mobile which tends to drive the moving part of the cage in a translation movement according to the direction axial so that just release the movement translation of the mobile part of the cage for release the translation movement of the rod. It results that the release of the translation movement of the stem can be performed in both directions of the axial direction and this fast way with little energy.

La figure 8 illustre une vue partielle en coupe schématique selon la direction axiale A du système de verrouillage selon un troisième mode de réalisation de l'invention.Figure 8 illustrates a partial sectional view schematic according to the axial direction A of the system of locking according to a third embodiment of the invention.

Le système de verrouillage selon le troisième mode de réalisation de l'invention est appliqué à une commande mécanique à ressorts pour un disjoncteur haute et moyenne tension comme décrit dans le premier mode de réalisation et illustrée ci-dessus par les figures 1 et 2. Sur la figure 8, on a représenté la tige 2 de la commande avec les gorges 2A et 2B. Le système de verrouillage 5 comprend ici une cage annulaire 87 entourant la tige 2 et dans laquelle sont disposées les billes 6. La cage annulaire 87 comprend une première partie annulaire fixe 87B en forme de bague comportant des trous radiaux répartis sur sa périphérie circulaire dans lesquels sont disposées les billes 6. La partie annulaire 87B est fixée au boítier 9 (non montré sur la figure 8) par un moyen non montré sur la figure 8. La cage annulaire 87 comprend également une deuxième partie mobile cylindrique 87A en forme de bague entourant la partie annulaire fixe 87B. La partie mobile cylindrique 87A est mobile en translation selon la direction axiale A. Une troisième partie fixe 84 en forme de douille à fond ouvert entoure la partie mobile 87A. La douille 84 emmanchée par l'extrémité de la tige 2 a son fond ouvert pour laisser passer la tige 2 lors de son mouvement de translation et est solidaire de la partie annulaire fixe 87B.The locking system according to the third embodiment of the invention is applied to a mechanical spring control for a high circuit breaker and medium voltage as described in the first mode of embodiment and illustrated above by FIGS. 2. In FIG. 8, the rod 2 of the control with grooves 2A and 2B. The system of lock 5 here comprises an annular cage 87 surrounding the rod 2 and in which are arranged the 6. The annular cage 87 comprises a first ring-shaped fixed ring portion 87B having radial holes distributed on its circular periphery in which the balls 6 are arranged. ring 87B is attached to the housing 9 (not shown on the FIG. 8) by a means not shown in FIG. annular cage 87 also includes a second part circular cylindrical ring 87A surrounding the fixed annular portion 87B. The cylindrical moving part 87A is movable in translation in the axial direction A. A third fixed portion 84 in the form of a socket open bottom surrounds the movable portion 87A. The socket 84 fitted by the end of the rod 2 has its bottom open to let the rod 2 pass during its movement of translation and is integral with the fixed annular portion 87B.

La bague mobile 87A est munie d'une gorge circonférentielle intérieure 830 qui entoure la bague fixe 87B et dans laquelle la pluralité de billes 6 s'escamotent quand la bague mobile 87A occupe une certaine position le long de l'axe A correspondant à la libération du mouvement de translation de la tige 2. La profondeur de la gorge 830 est légèrement supérieure à la profondeur de la gorge 2B (ou la gorge 2A). Cette gorge 830 présente des flancs 831 inclinés d'un angle de 30°, par exemple, par rapport à une direction radiale. Un des flancs 831 est interrompu pour se prolonger en un alésage tronconique qui va en se resserrant vers l'axe A en allant vers le fond de la douille 84 pour former une rampe annulaire 832. Dans notre exemple de réalisation, ladite rampe 832 est un plan incliné de quelques degrés par rapport à la direction axiale A. Une entretoise annulaire 83 à faible coefficient de frottement fixée à la bague fixe 87B favorise le glissement de la bague mobile 87A.The movable ring 87A is provided with a throat inner circumferential circumference 830 that surrounds the ring fixed 87B and wherein the plurality of balls 6 retract when the movable ring 87A occupies a certain position along the axis A corresponding to the release of the translation movement of the rod 2. The 830 throat depth is slightly greater than the depth of the groove 2B (or the groove 2A). This throat 830 has flanks 831 inclined at an angle of 30 °, for example, with respect to a radial direction. One of 831 flanks is interrupted to extend into a bore frustoconical which is tightening towards the axis A in going towards the bottom of the bush 84 to form a annular ramp 832. In our example embodiment, said ramp 832 is a plane inclined by a few degrees relative to the axial direction A. A spacer ring 83 with a low coefficient of friction set at the fixed ring 87B promotes the sliding of the ring mobile 87A.

On voit sur la figure 8 que la pluralité de billes 6 est engagée, d'un côté, dans la gorge 2B et maintenue de l'autre par la rampe 832. La tige de commande 2 est donc maintenue en position immobile. On a représenté par la flèche FS, la force exercée par le ressort d'enclenchement 3B sur la tige 2. La flèche FR1 représente la force de réaction transmise par l'intermédiaire de la pluralité de billes 6 à la bague mobile 87A. On comprend que la direction de la force FR1 est la direction radiale au point de contact entre la bille 6 correspondante et la rampe 832. Cette force FR1 est donc appliquée à la rampe 832 de sorte qu'elle engendre une force axiale FR2' agissant pour entraíner le mouvement de translation de la douille mobile 87A dans le sens opposé de la force FS du ressort d'enclenchement 3B. Ce mouvement de translation de la douille mobile 87A est bloqué par un électroaimant (non montré sur la figure 8) fixé au boítier 9.We see in Figure 8 that the plurality of 6 balls is engaged, on one side, in the groove 2B and maintained on the other by the ramp 832. The rod of command 2 is maintained in the stationary position. We have represented by the arrow FS, the force exerted by the locking spring 3B on the rod 2. The arrow FR1 represents the reaction force transmitted by through the plurality of balls 6 to the ring mobile 87A. We understand that the direction of the FR1 force is the radial direction at the point of contact between the corresponding ball 6 and the ramp 832. This force FR1 is therefore applied to the 832 ramp so that it generates an axial force FR2 'acting to drive the translational movement of the movable sleeve 87A in the opposite direction of the force FS of the engagement spring 3B. This translational movement of the movable bushing 87A is blocked by an electromagnet (not shown in Figure 8) fixed to the housing 9.

Dans ce troisième mode de réalisation, la douille à fond ouvert 84 comprend une ouverture agencée pour laisser se déplacer une bielle 85 en forme de "L" reliée à la bague mobile 87A. La bielle 85 est reliée à l'extérieur de la cage 87A à l'électroaimant (non montré sur la figure 8) par l'intermédiaire d'une pièce rotative (non montré sur la figure 8), de sorte qu'une rotation de cette dernière entraíne, par l'intermédiaire de la bielle 85, la libération du mouvement de translation de la bague mobile 87A entraíné sous l'effet de la force FR2'.In this third embodiment, the socket open bottom 84 includes an opening arranged to allow to move a connecting rod 85 in the shape of "L" connected to the movable ring 87A. The connecting rod 85 is connected to the outside of the cage 87A to the electromagnet (not shown in Figure 8) via a rotating part (not shown in Figure 8), so that a rotation of the latter drives, via the connecting rod 85, the release of the translation movement of the ring mobile 87A driven under the effect of the force FR2 '.

Les billes 6 se déplacent alors dans les trous de la bague fixe 87B et s'escamotent dans la gorge 830 de la bague mobile 87A. La tige 2 est libérée et subit un mouvement de translation entraíné par la force FS. Il en résulte une commutation du disjoncteur en position de fermeture. Dans cette position du disjoncteur, la gorge 830 de la bague mobile 87A fait face à la gorge circonférentielle 2A.The balls 6 then move in the holes of the fixed ring 87B and retract into the groove 830 of the movable ring 87A. Rod 2 is released and undergoes a translational movement driven by the FS force. It results in a circuit breaker switching to the position of closing. In this position of the circuit breaker, the throat 830 of the 87A movable ring faces the throat circumferential 2A.

Un ressort de rappel 81, disposé de façon coaxiale à la tige 82 entre le fond de la douille 84 et la bague mobile 87A, agit pour ramener la bague mobile 87A dans le sens de la force FS.A return spring 81, arranged so coaxial with the rod 82 between the bottom of the bushing 84 and the movable ring 87A acts to bring back the movable ring 87A in the direction of the FS force.

Les billes 6 se déplacent dans les trous de la bague fixe 87B et s'escamotent dans la gorge 2A de la tige 2, poussées par les rampes 831 et 832 de la bague mobile 87A. L'électroaimant agit pour maintenir immobile la tige 2 de la commande dans cette position de fermeture du disjoncteur.The balls 6 move in the holes of the fixed ring 87B and retract into the groove 2A of the rod 2, pushed by the ramps 831 and 832 of the ring mobile 87A. The electromagnet acts to hold still the rod 2 of the control in this closed position circuit breaker.

Le système de verrouillage selon le troisième mode de réalisation fonctionne de manière similaire pour une commutation du disjoncteur d'une position de fermeture à une position d'ouverture.The locking system according to the third embodiment works similarly for circuit breaker switching from a position of closing at an open position.

Le système de verrouillage selon l'invention peut s'appliquer à une commande mécanique linéaire à ressorts pour sectionneur haute ou moyenne tension ou encore à une commande mécanique linéaire à ressorts pour sectionneurs de terre haute ou moyenne tension.The locking system according to the invention can apply to a linear mechanical spring drive for high or medium voltage disconnectors or at a linear mechanical spring control for disconnectors high or medium voltage earth.

L'équipement linéaire électrique 14 pour entraíner et contrôler le mouvement de la tige de commande 2 peut être, par exemple, un servomoteur relié à une crémaillère. Il est possible de remplacer les ressorts de la commande complètement et de commander et contrôler le mouvement de la tige par ce servomoteur uniquement.Electric linear equipment 14 for drive and control the movement of the rod command 2 can be, for example, a servomotor connected to a rack. It is possible to replace springs the control completely and to control and control the movement of the rod by this servomotor only.

L'angle d'inclinaison des flancs des gorges 2A, 2B et des plans 32, 732, 832 pourra être choisi de manière à obtenir un roulement des billes dans la cage annulaire plutôt qu'un glissement.The angle of inclination of the flanks of the grooves 2A, 2B and plans 32, 732, 832 may be chosen from in order to obtain a rotation of the balls in the cage ring rather than a slip.

Claims (11)

Système de verrouillage pour immobiliser ou libérer le mouvement de translation d'une tige (2) d'une commande linéaire, la tige étant mobile selon une direction axiale (A) entre une première position et une deuxième position espacée d'une certaine distance selon la direction axiale de la première position, caractérisé en ce qu'il comprend deux gorges circonférentielles (2A, 2B) formées sur la tige et espacées l'une de l'autre selon la direction axiale de la dite certaine distance et une pluralité de billes (6) réparties sur la périphérie de la tige pour coopérer avec lesdites gorges circonférentielles, lesdites billes étant montées dans une cage annulaire (7, 77, 87) entourant la tige, ladite cage annulaire comprenant une première partie annulaire (7B, 77B, 87B) fixe selon la direction axiale, entourant la tige et traversée par les billes et une deuxième partie (7A, 77A, 87A) mobile par rapport à la partie annulaire fixe (7B, 77B, 87B), entourant la première partie annulaire avec les billes et agencée de manière à être entraínée en rotation ou en translation par rapport à la première partie annulaire sous l'effet d'une force axiale exercée sur la tige pour libérer le mouvement de translation de la tige.Locking system for immobilizing or releasing the translation movement of a rod (2) of a linear control, the rod being movable in an axial direction (A) between a first position and a second position spaced a certain distance according to the axial direction of the first position, characterized in that it comprises two circumferential grooves (2A, 2B) formed on the rod and spaced from each other in the axial direction of said certain distance and a plurality of balls (6) distributed over the periphery of the rod to cooperate with said circumferential grooves, said balls being mounted in an annular cage (7, 77, 87) surrounding the rod, said annular cage comprising a first annular portion (7B, 77B, 87B ) fixed in the axial direction, surrounding the rod and traversed by the balls and a second portion (7A, 77A, 87A) movable relative to the fixed annular portion (7B, 77B, 87B), surrounding the first annular portion with the balls and arranged to be rotated or translated relative to the first annular portion under the effect of an axial force exerted on the rod to release the translational movement of the rod. Système de verrouillage selon la revendication 1, dans lequel la cage (7) est agencée de sorte qu'un mouvement de rotation de la partie mobile (7A) autour de la tige selon un premier sens angulaire provoque la libération du mouvement de translation de la tige dans un sens et un mouvement de rotation de la partie mobile (7A) autour de la tige selon un sens inverse provoque l'immobilisation du mouvement de translation de la tige.Locking system according to the claim 1, wherein the cage (7) is arranged so that a rotational movement of the moving part (7A) around the rod in a first angular direction causes the release of the translation movement of the rod in a sense and a rotational movement of the moving part (7A) around the stem in a reverse direction causes the immobilization of the translation movement of the rod. Système de verrouillage selon la revendication 1, dans lequel la cage (77, 87) est agencée de sorte qu'un mouvement de translation selon la direction axiale (A) de la partie mobile (77A, 87A) selon un premier sens provoque la libération du mouvement de translation de la tige et qu'un mouvement de translation de la partie mobile (77A, 87A) selon un sens inverse provoque l'immobilisation du mouvement de translation de la tige.Locking system according to the claim 1, wherein the cage (77, 87) is arranged so that a translation movement in the axial direction (A) of the movable part (77A, 87A) according to a first sense causes the release of the translation movement of the stem and that a translational movement of the part mobile (77A, 87A) in a reverse direction causes the immobilization of the translation movement of the rod. Système de verrouillage selon la revendication 2, dans lequel la partie mobile (7B) comprend des cannelures (30) dans lesquelles viennent s'introduire les billes (6) quand la partie mobile occupe une position angulaire qui provoque la libération du mouvement de translation de la tige et dans lequel la partie mobile présente entre deux cannelures consécutives une surface intérieure qui forme une rampe (32) sur laquelle se déplacent les billes.Locking system according to the claim 2, wherein the movable portion (7B) comprises grooves (30) into which the balls (6) when the moving part occupies a position angular which causes the liberation of the movement of translation of the rod and wherein the moving part present between two consecutive grooves a surface interior which forms a ramp (32) on which move the balls. Système de verrouillage selon la revendication 2, dans lequel la partie mobile (77A, 87A) comprend une gorge circonférentielle (730, 830) dans laquelle vient s'introduire les billes (6) quand la partie mobile occupe une position selon la direction axiale A qui provoque la libération du mouvement de translation de la tige et dans lequel un flanc de la gorge circonférentielle (730, 830) s'interrompt pour se prolonger en un alésage tronconique qui forme une rampe (732, 832) sur laquelle se déplacent les billes.Locking system according to the claim 2, wherein the movable portion (77A, 87A) comprises a circumferential groove (730, 830) in which to introduce the balls (6) when the moving part occupies a position in the axial direction A which causes the release of the translation movement of the rod and in which a flank of the circumferential groove (730, 830) stops to extend into a frustoconical bore which forms a ramp (732, 832) on which move the marbles. Système de verrouillage selon l'une des revendications 1 à 5, dans lequel les gorges circonférentielles (2A, 2B) de la tige ont des flancs inclinés par rapport à l'axe de la tige.Locking system according to one of Claims 1 to 5, wherein the grooves circumferences (2A, 2B) of the stem have flanks inclined relative to the axis of the rod. Système de verrouillage selon les revendications 1 à 6, dans lequel la partie mobile (7A, 77A, 87A) est immobilisée par l'intermédiaire d'un électro-aimant (40, 70).Locking system according to Claims 1 to 6, wherein the movable portion (7A, 77A, 87A) is immobilized via a electromagnet (40, 70). Système de verrouillage selon les revendications 1 à 7, comprenant un ressort de rappel (41, 71, 81) qui exerce une force dans une direction opposée au mouvement de rotation ou de translation de la partie mobile (7A, 77A, 87A).Locking system according to Claims 1 to 7, comprising a return spring (41, 71, 81) which exerts a force in one direction opposite to the movement of rotation or translation of the moving part (7A, 77A, 87A). Commande mécanique linéaire pour disjoncteur haute ou moyenne tension comprenant un système de verrouillage selon l'une des revendications 1 à 8.Linear mechanical control for circuit breaker high or medium voltage including a interlock according to one of claims 1 to 8. Commande mécanique linéaire pour sectionneur haute ou moyenne tension comprenant un système de verrouillage selon l'une des revendications 1 à 8. Linear mechanical control for disconnector high or medium voltage including a interlock according to one of claims 1 to 8. Commande mécanique linéaire pour sectionneurs de terre haute ou moyenne tension comprenant un système de verrouillage selon l'une des revendications 1 à 8.Linear mechanical control for disconnectors high or medium voltage earth including a system of interlock according to one of claims 1 to 8.
EP20050102351 2004-03-29 2005-03-23 Locking system for a linear actuator Not-in-force EP1583119B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0450611A FR2868198B1 (en) 2004-03-29 2004-03-29 LOCKING SYSTEM FOR LINEAR CONTROL
FR0450611 2004-03-29

Publications (3)

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EP1583119A2 true EP1583119A2 (en) 2005-10-05
EP1583119A3 EP1583119A3 (en) 2008-03-05
EP1583119B1 EP1583119B1 (en) 2009-07-15

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EP20050102351 Not-in-force EP1583119B1 (en) 2004-03-29 2005-03-23 Locking system for a linear actuator

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EP (1) EP1583119B1 (en)
DE (1) DE602005015372D1 (en)
FR (1) FR2868198B1 (en)

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FR2971079A1 (en) * 2011-02-02 2012-08-03 Alstom Grid Sas ELECTRICAL EQUIPMENT COMPRISING A MOBILE PART WITH IMPROVED DYNAMICS
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US9202645B2 (en) 2011-02-02 2015-12-01 Alstom Technology Ltd. Switchgear for a vacuum circuit breaker comprising locking means
EP3671794A1 (en) * 2018-12-20 2020-06-24 ABB Schweiz AG Medium voltage switching pole
JP2021514570A (en) * 2018-01-23 2021-06-10 ルネサスエレクトロニクス株式会社 Overheat protection circuit
CN113898689A (en) * 2021-11-11 2022-01-07 鞍山电磁阀有限责任公司 Driving rack locking device
EP4105529A1 (en) * 2021-06-14 2022-12-21 MAGENTA GmbH Mechatronische und Kinematische Systeme Trigger device and an assembly comprising a trigger device

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Cited By (20)

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Publication number Priority date Publication date Assignee Title
EP1744338A1 (en) * 2005-07-13 2007-01-17 Nuova Magrini Galileo S.p.A. Drive mechanism and method for opening/closing of electric switchgear
US9202645B2 (en) 2011-02-02 2015-12-01 Alstom Technology Ltd. Switchgear for a vacuum circuit breaker comprising locking means
FR2971079A1 (en) * 2011-02-02 2012-08-03 Alstom Grid Sas ELECTRICAL EQUIPMENT COMPRISING A MOBILE PART WITH IMPROVED DYNAMICS
WO2012104371A1 (en) * 2011-02-02 2012-08-09 Alstom Technology Ltd Electrical equipment comprising a mobile part having improved dynamics
CN103329231A (en) * 2011-02-02 2013-09-25 阿尔斯通技术有限公司 Electrical equipment comprising a mobile part having improved dynamics
CN103329231B (en) * 2011-02-02 2016-01-20 阿尔斯通技术有限公司 Comprise a kind of electric equipment with dynamic (dynamical) movable part of improvement
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CN104246944A (en) * 2012-04-17 2014-12-24 Abb技术有限公司 Emergency opening device
WO2013156186A1 (en) * 2012-04-17 2013-10-24 Abb Technology Ag Emergency opening device
EP2654056A1 (en) * 2012-04-17 2013-10-23 ABB Technology AG Emergency opening device
JP2021514570A (en) * 2018-01-23 2021-06-10 ルネサスエレクトロニクス株式会社 Overheat protection circuit
JP7292286B2 (en) 2018-01-23 2023-06-16 ルネサスエレクトロニクス株式会社 Over temperature protection circuit
US11750186B2 (en) 2018-01-23 2023-09-05 Renesas Electronics Corporation Over-temperature protection circuit
EP3671794A1 (en) * 2018-12-20 2020-06-24 ABB Schweiz AG Medium voltage switching pole
WO2020126740A1 (en) * 2018-12-20 2020-06-25 Abb Schweiz Ag Medium voltage switching pole
CN113228217A (en) * 2018-12-20 2021-08-06 Abb瑞士股份有限公司 Medium voltage switch pole
US11594386B2 (en) 2018-12-20 2023-02-28 Abb Schweiz Ag Medium voltage switching pole
EP4105529A1 (en) * 2021-06-14 2022-12-21 MAGENTA GmbH Mechatronische und Kinematische Systeme Trigger device and an assembly comprising a trigger device
CN113898689A (en) * 2021-11-11 2022-01-07 鞍山电磁阀有限责任公司 Driving rack locking device

Also Published As

Publication number Publication date
EP1583119A3 (en) 2008-03-05
FR2868198B1 (en) 2006-05-19
DE602005015372D1 (en) 2009-08-27
EP1583119B1 (en) 2009-07-15
FR2868198A1 (en) 2005-09-30

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