EP2068332B1 - Verriegelungsgerät für einen Steuerungsmechanismus eines elektrischen Getätes, und Steuerungsmechanismus mit solchem Verriegelungsgerät - Google Patents

Verriegelungsgerät für einen Steuerungsmechanismus eines elektrischen Getätes, und Steuerungsmechanismus mit solchem Verriegelungsgerät Download PDF

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Publication number
EP2068332B1
EP2068332B1 EP08170271A EP08170271A EP2068332B1 EP 2068332 B1 EP2068332 B1 EP 2068332B1 EP 08170271 A EP08170271 A EP 08170271A EP 08170271 A EP08170271 A EP 08170271A EP 2068332 B1 EP2068332 B1 EP 2068332B1
Authority
EP
European Patent Office
Prior art keywords
slider
finger
rotation
latching device
slide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP08170271A
Other languages
English (en)
French (fr)
Other versions
EP2068332A1 (de
Inventor
Mathieu Marquet
Antoine Vicaigne
Romain Maladen
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.)
Schneider Electric Energy France SAS
Original Assignee
Areva T&D SAS
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 SAS filed Critical Areva T&D SAS
Publication of EP2068332A1 publication Critical patent/EP2068332A1/de
Application granted granted Critical
Publication of EP2068332B1 publication Critical patent/EP2068332B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—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

Definitions

  • the present invention relates to the general field of electrical equipment and in particular to the field of medium voltage switch control mechanisms.
  • the invention relates to a hooking device for a medium voltage switch control mechanism and a control mechanism comprising such a hooking device.
  • the current distribution cells for example the medium voltage cells, comprise in particular a switch which establishes or cuts the passage of the current in the cell.
  • a medium voltage switch is usually controlled by a spring-loaded control mechanism that is operated for example by means of a removable lever. These mechanisms can be with or without clashes depending on their function. It is known that the control mechanisms are subjected to significant efforts. However, to comply with regulatory standards that impose a limit on the triggering force, the clutch control mechanisms often include links complexes or lever arms of great length in order to minimize the triggering force.
  • the document FR2160980 discloses a control mechanism for electric circuit breaker, including a driving wheel whose rotation causes the energization of a snap-in spring, and the release of the accumulated elastic energy triggers.
  • the control mechanism comprises a set of tensioning of the engagement spring A18, comprising the mechanical parts A1 to A7, acting on a drive wheel A8 in cooperation with an anti-rotation assembly. back (parts A11 and A12).
  • This same wheel A8 drives, via a finger A9, a cam A10 mounted on the axis A14 of said wheel A8 whose end is capable of abutting against a snap A13.
  • an engagement assembly parts A15 to A18
  • a trigger assembly parts A19 to A22.
  • the attachment device of the control mechanism comprises in particular the cam A10, the drive wheel A8 comprising a finger A9 acting on the cam A10, the snap-fastening A13 and the non-return assembly A11 and A12 preventing the wheel A8 of turn in the opposite direction.
  • Such a coupling device for a control mechanism has a number of disadvantages.
  • the mechanical structure of the attachment device is characterized by a large number of mechanical parts of different dimensions and likely to deform. This is the case for example when the attachment device is in closed configuration (cam A10 abuts against the snap A13) where the cam A10 exerts a continuous force on the snap A13.
  • An imperfect contact surface condition between the cam and the latching and a deformation of one of the two parts can cause an unplanned triggering of the control mechanism. The reliability of the control mechanism is no longer guaranteed.
  • the energization of the interlocking spring which results in the setting in closed configuration of the attachment device requires the use of a set of complex power, including the large number of mechanical parts , in particular of small size (roller A7, counter roller A3, lever A6, balance A2) likely to deform, reduces the reliability of the control mechanism.
  • a contact fault between the cam A10 and the roller A7 may cause the ratchet lever A5 to engage continuously in the toothing of the drive wheel A8 and then block the triggering of the control mechanism.
  • the control mechanism comprises a complex linkage consisting in particular of a lever arm A19, a connecting rod A16 and a cam A10 large.
  • control mechanism previously described has an attachment device and actuation assemblies of said device with complex structures consisting of a multitude of parts of different dimensions likely to deform.
  • the slightest play or the slightest deformation of these mechanical parts can cause a blocking of the control mechanism, making it impossible to engage or trigger the mechanism, or even a nuisance tripping.
  • the object of the present invention is to overcome the aforementioned drawbacks and in particular to provide a coupling device for medium voltage switch control mechanism designed to ensure high reliability while having a reduced trip force.
  • the abutment portion of the locking finger comprises a roller rotating about a third axis substantially parallel to the second axis and having a surface adapted to come into contact with the stop portion of the slide.
  • the slide is guided in its movement by at least two rotating rollers on axes.
  • said one or more rollers are mounted on rings made of self-lubricated polymer.
  • said one or more rollers are mounted on rings made of polytetrafluoroethylene.
  • said roller or rollers and the surface of the slideway are made of steel.
  • said slideway comprises a portion adapted to come into contact with the abutment portion of said locking pin, said slide portion being substantially adjacent to the abutment portion of the slide and oriented such that that during the release of the finger, its contact with the abutment portion causes the movement of the slide.
  • a release lever is connected to said slideway so as to control the movement of said slideway.
  • the present invention also relates to a control mechanism including a medium voltage switch, comprising a hooking device according to one of the preceding characteristics.
  • the attachment device comprises a control wheel 10 rotatably mounted on a first axis or shaft 11 and adapted to be locked in rotation.
  • the control wheel 10 is constrained in rotation in a determined direction of rotation.
  • the control wheel 10 is constrained in rotation in the direction anti-clockwise when viewed from the front.
  • the control wheel 10 may be constrained by a spiral spring (not shown), but also by other types of spring, for example a helical spring whose end is connected to the control wheel 10.
  • the control wheel 10 has at its outer periphery a cam surface 12.
  • the cam surface 12 of the control wheel 10 comprises at least one locking portion 13 in the form of an arcuate recess.
  • the attachment device comprises a locking pin 20 rotatably mounted on a second axis 21 parallel to the first axis 11.
  • the locking pin 20 comprises a cam follower portion 22 intended to be in contact with the cam surface. 12 of the control wheel 10.
  • a means exerting a restoring force (not shown), for example a torsion spring, is connected to the locking finger 20 so as to maintain contact between the follower portion of the cam 22 of the locking finger. blocking 20 and the cam surface 12 of the control wheel 10.
  • the second axis 21 is located substantially near one end of the finger 20 and the cam follower portion 22 is located substantially near the other end.
  • the force exerted by the spiral spring on the control wheel 10 to constrain it in rotation is transmitted to the locking pin 20 by causing the rotation of the finger 20.
  • the rotation of the finger 20 causes the release of the portion cam follower 22 of the locking portion 13 and allows the further rotation of the wheel 10.
  • the clearance of the cam follower portion 22 of the locking portion 13 is impossible and the rotation of the wheel is blocked.
  • the cam follower portion 22 can escape from the locking portion 13 by the anti-clockwise rotation of the finger 20.
  • the attachment device comprises a slideway 30 comprising an abutment portion 31.
  • the slideway can slide in translation so as to contact or release the abutment portion 31 of the slideway 30 with an abutment portion 23 of the locking finger 20.
  • the slide 30 is disposed relative to the locking finger 20 so as to block the rotation of the finger 20 when the abutment portion 23 of the locking finger 20 is in contact with the portion forming stop 31 of the slide 30.
  • the slide 30 functions as a removable stop.
  • the attachment device is able to occupy a locked configuration in which the control wheel 10 is immobilized in rotation, as illustrated in FIG. figure 2 .
  • the immobilization in rotation of the wheel 10 is provided jointly, firstly by the support of the cam follower portion 22 on the locking portion 13 of the cam surface 12, and secondly by the immobilization in rotation of the finger 20 through the retention of its abutment portion 23 by the abutment portion 31 of the slide 30.
  • the triggering of the attachment device is ensured by the setting in motion of the slide 30 causing the escape of the stop between the abutment portion 23 of the finger 20 and the abutment portion 31 of the slide 30.
  • the rotation of the finger 20 around the second axis 21 is made free, thereby allowing the disengaging the follower cam portion 22 from the locking portion 13 of the cam surface 12.
  • the attachment device according to the invention has a certain number of advantages.
  • the triggering force of the attachment device is reduced because it corresponds only to the force required to slide the slideway 30 and to obtain the exhaust of the stop between the stop portion 31 of the slideway 30. and the abutment portion 23 of the finger 20.
  • the forces exerted on the slide 30 indirectly by the control wheel 10 are reduced since resumed in part by the axis 21 of the finger 20. This helps to reduce the triggering force to be applied to slide 30.
  • the attachment device according to the invention therefore has increased reliability.
  • the attachment device according to the invention by the fact of not having to use connecting rods or parts of great length, has the advantage of a small footprint.
  • the abutment portion 23 of the locking pin 20 comprises a rotating roller 23 around a third axis 24 substantially parallel to the second axis 21 and having a surface adapted to come into contact with the forming a stop portion 31 of the slideway 30.
  • the slideway 30 is guided in its movement by at least two rollers 32A and 32B each rotatable about the axes 33A and 33B substantially parallel to the third axis 24 and substantially perpendicular to the direction of movement of the slideway 30, in permanent contact with the surface of the slide 30.
  • the slide 30 moves relative to the two rollers 32A and 32B rotating them. This reduces the triggering force since the displacement of the slide 30 is not by sliding on a support but by rolling on the two rollers 32A and 32B.
  • the dry kinematic coefficient of friction is of the order of 10 -1 .
  • the coefficient of rolling is of the order of 10 -3 , that is two orders of magnitude lower than the coefficient of kinematic friction. The triggering force is thus reduced.
  • the rollers 23, 32A and 32B can be mounted respectively on rings 25, 35A and 35B.
  • the materials of the rollers 23, 32A and 32B, the rings 25, 35A and 35B, and the surface 34 of the slide 30 are chosen so as to have a low rolling coefficient, so as to reduce the release force as explained previously.
  • the rollers 23, 32A and 32B and the surface 34 of the slide 30 are made of steel, and the rings 25, 35A and 35B are made of self-lubricated polymer.
  • the term "self-lubricated” applies here to a material whose coefficient of friction is sufficiently low not to have to use lubricant at the contact surface between the rings 25, 35A and 35B and, respectively, the rollers 23. , 32A and 32B.
  • the self-lubricated polymer may be a fluoropolymer, for example polytetrafluoroethylene or POM loaded with PTFE and / or silicone.
  • the slide 30 comprises a portion 36 adapted to come into contact with the abutment portion 23 of said locking finger 20.
  • the portion 36 is substantially adjacent to the abutment portion 31 of the slide 30 and oriented so as to undergo a force exerted by the abutment portion 23 of said finger 20 during the rotation of said finger 20 under the effect of the rotation of said wheel 10.
  • the figure 2 shows a portion 36 in the form of a flat surface having an angle substantially greater than 90 ° relative to the abutment portion 31 of the slide 30.
  • a release lever 40 may be provided to control the movement of the slide 30.
  • the trigger lever 40 is rotatably mounted on an axis 41 substantially parallel to the axis 21 of the finger 20.
  • the lever 40 comprises a slot 42 in the form of recess for the translation of the lever 40 relative to the axis 41.
  • the lever 40 is connected by pivotally to the slide 30 so that the rotation of the lever 40 drives the slide 30 in translation.
  • a release frame 50 is provided on which are mounted integral the rings 35A and 35B, as well as the axis 41 of the trip lever 40.
  • the shafts 11, 21 and 41 are mounted substantially perpendicular to a plate (not shown).
  • control wheel 10 is rotated in a clockwise direction.
  • the force exerted by the wheel 10 on the finger 20 tends to rotate it in a counter-clockwise rotation so that the cam follower portion 22 of the finger 20 escapes from the locking portion 13 of the cam surface 12.
  • the rest of the triggering movement is identical to what has been described previously.
  • the figure 6 shows yet another embodiment of the invention wherein the axis 21 of the finger 20 is located substantially in the center of the finger 20.
  • the cam follower portion 22 and the abutment portion 23 are no longer located substantially at the same end of the finger 20, as in the preferred embodiment of the invention, but are located opposite to each other.
  • the cam follower portion 22 is located substantially at one end of the locking finger 20 while the abutment portion 23 is located substantially at the other end.
  • the triggering movement is identical to that described in the preferred embodiment of the invention.
  • the triggering of the attachment device can be effected by actuation of the release lever 40, either manually or automatically.
  • actuation of the release lever 40 There are many possibilities to actuate the trigger lever 40, for example by push button in the case of a manual action.
  • the trip lever 40 may also be actuated by the melting of a fuse, or by the action of an electromagnet, or by a coil lack of voltage or striker.
  • the triggering of the attachment device results in the rotation of the wheel 10 whose rotation energy allows the actuation of mechanical means connected to the wheel 10 (not shown) intended to establish or cut the passage of the current in the distribution cell.
  • the engagement can be carried out manually or by means of a motorization.
  • the trip lever 40 is then actuated by a return spring fixed between the release lever 40 and the frame 50 so as to slide the slideway 30 in the reverse direction to the triggering direction.
  • the abutment portion 23 of the locking finger 20 moves along the portion 36 of the slide and then comes into contact with the abutment portion 31 of the slide.
  • the cam follower portion 22 of the finger 20 moves along the cam surface 12 until it comes into contact with the locking portion 13 of the cam surface 12.
  • the attachment device is then found in the locked configuration.
  • the control wheel 10 is immobilized in rotation on the one hand by the support of the cam follower portion 22 on the locking portion 13 of the cam surface 12 and on the other hand by the immobilization in rotation of the finger 20 thanks to the retention of its abutment portion 23 by the abutment portion 31 of the slide 30.

Landscapes

  • Mechanisms For Operating Contacts (AREA)
  • Transmission Devices (AREA)
  • Lock And Its Accessories (AREA)
  • Braking Arrangements (AREA)
  • Mechanical Control Devices (AREA)
  • Selective Calling Equipment (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Claims (9)

  1. Verriegelungsgerät für einen Steuerungsmechanismus, insbesondere einen Mittelspannungsschalter,
    dadurch gekennzeichnet, dass es umfasst:
    - ein drehbar auf eine erste Achse (11) montiertes Steuerungsrad (10), vorgespannt mit festgelegter Drehrichtung und mit einer eine Steuerkurvenfläche bildenden Fläche (12),
    - einen um eine zweite Achse (21) drehbaren Blockierfinger (20) mit einem einen Anschlag bildenden Teil (23) sowie einem Steuerkurvenverfolgungsteil (22), bestimmt für den Kontakt mit der genannten Steuerkurvenfläche (12),
    gekennzeichnet durch
    - eine Gleitschiene (30) mit einem Anschlagsabschnitt (31),
    wobei das genannte Gerät fähig ist, eine verriegelte Konfiguration anzunehmen, in der das genannte Steuerungsrad (10) rotationsarretiert ist
    - einerseits durch die Abstützung des genannten Steuerkurvenverfolgungsteils (22) auf einem Blockierungsabschnitt (13) der genannten Steuerkurvenfläche (12); und
    - andrerseits durch die Rotationsarretierung des genannten Fingers (20) dank der Zurückhaltung seines anschlagbildenden Teils (23) durch den genannten Anschlagsabschnitt (31) der Gleitschiene (30),
    wobei das genannte Gerät so konzipiert ist, dass es durch eine Betätigung der Gleitschiene (30) aus seiner verriegelten Konfiguration entriegelt werden kann, indem der Anschlag aus der Position zwischen dem genannten anschlagbildenden Teil (23) und dem genannten Anschlagsabschnitt (31) der Gleitschiene (30) entweicht und die Drehung des genannten Fingers (20) um die zweite Achse (21) freigibt, wobei dieses Entweichen des Anschlags zu einer Drehung des unter der Wirkung seiner Vorspannung stehenden Rades (10) führt, so dass es den Steuerkurvenverfolgungsteil (22) aus dem Blockierungsabschnitt (13) der Steuerkurvenfläche (12) drückt bzw. hebt, indem es sich relativ zu diesem bewegt, dank der Drehung des genannten Fingers (20) um die zweite Achse (21).
  2. Verriegelungsgerät nach Anspruch 1, dadurch gekennzeichnet, dass der anschlagbildende Teil (23) des Blockierfingers (20) eine Rolle umfasst, die um eine zu der zweiten Achse (21) im Wesentlichen parallele dritte Achse (24) drehbar ist und eine Oberfläche aufweist, die angepasst ist an den Kontakt mit dem anschlagbildenden Abschnitt (31) der Gleitschiene (30).
  3. Verriegelungsgerät nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Bewegung der Gleitschiene (30) durch wenigstens zwei Rollen (32A, 32B), drehbar um zwei Achsen (33A, 33B), geführt wird.
  4. Verriegelungsgerät nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass die genannte(n) Rolle(n) (23 ; 32A, 32B) auf aus Polymer hergestellte Selbstschmierungsringe (25; 35A, 35B) montiert sind.
  5. Verriegelungsgerät nach Anspruch 4, dadurch gekennzeichnet, dass die genannte(n) Rolle(n) (23 ; 32A, 32B) auf Ringe aus Polytetrafluorethylen montiert sind.
  6. Verriegelungsgerät nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, dass die genannte(n) Rolle(n) (23 ; 32A, 32B) und die Fläche bzw. Oberfläche (34) der Gleitschiene (30) aus Stahl sind.
  7. Verriegelungsgerät nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Gleitschiene (30) einen Abschnitt (36) aufweist, der dazu bestimmt ist, mit dem anschlagbildenden Teil (23) des genannten Blockierfingers (20) in Kontakt zu kommen, wobei der genannte Gleitschienenabschnitt (36) an den Anschlagsabschnitt (31) der Gleitschiene (30) angrenzt und so ausgerichtet ist, dass, wenn der Finger (20) sich hebt, der Kontakt mit dem anschlagbildenden Teil (23) die Verschiebung der Gleitschiene (30) zur Folge hat.
  8. Verriegelungsgerät nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Auslösungshebel (40) mit der genannten Gleitschiene (30) verbunden ist, um die Bewegung der genannten Gleitschiene (30) zu steuern.
  9. Steuerungsmechanismus insbesondere eines Mittelspannungsschalters mit einem Verriegelungsgerät nach einem der vorhergehenden Ansprüche.
EP08170271A 2007-12-03 2008-11-28 Verriegelungsgerät für einen Steuerungsmechanismus eines elektrischen Getätes, und Steuerungsmechanismus mit solchem Verriegelungsgerät Not-in-force EP2068332B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0759531A FR2924528B1 (fr) 2007-12-03 2007-12-03 Dispositif d'accrochage pour mecanisme de commande d'appareillage electrique et mecanisme de commande equipe d'un tel dispositif.

Publications (2)

Publication Number Publication Date
EP2068332A1 EP2068332A1 (de) 2009-06-10
EP2068332B1 true EP2068332B1 (de) 2011-01-12

Family

ID=39590998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08170271A Not-in-force EP2068332B1 (de) 2007-12-03 2008-11-28 Verriegelungsgerät für einen Steuerungsmechanismus eines elektrischen Getätes, und Steuerungsmechanismus mit solchem Verriegelungsgerät

Country Status (6)

Country Link
EP (1) EP2068332B1 (de)
CN (1) CN101452780B (de)
AT (1) ATE495536T1 (de)
DE (1) DE602008004416D1 (de)
ES (1) ES2359866T3 (de)
FR (1) FR2924528B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103366981A (zh) * 2013-07-09 2013-10-23 上海电器科学研究院 一种防误动作的电操机构
FR3083366B1 (fr) * 2018-06-29 2020-06-12 Socomec Dispositif de commande manuelle pour un inverseur de source manoeuvre a distance

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7143984U (de) * 1971-11-23 1972-02-03 Siemens Ag Antrieb fur einen elektrischen Leistungs Schalter
US4829278A (en) * 1988-08-03 1989-05-09 Westinghouse Electric Corp. Circuit breaker trip bar interlock
US6111486A (en) * 1999-04-08 2000-08-29 Eaton Corporation Trip unit settings lock out assembly
CN2478268Y (zh) * 2000-12-08 2002-02-20 上海宝菱电气控制设备有限公司 电气高压开关柜安全闭锁装置
CN2722480Y (zh) * 2004-06-24 2005-08-31 江苏东源电器集团股份有限公司 铠装式开关柜的机械操作闭锁装置
US7368677B2 (en) * 2005-12-14 2008-05-06 Eaton Corporation Reverse bias hatchet reset spring

Also Published As

Publication number Publication date
FR2924528B1 (fr) 2009-12-25
FR2924528A1 (fr) 2009-06-05
ES2359866T3 (es) 2011-05-27
DE602008004416D1 (de) 2011-02-24
EP2068332A1 (de) 2009-06-10
CN101452780A (zh) 2009-06-10
CN101452780B (zh) 2013-05-08
ATE495536T1 (de) 2011-01-15

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