EP0908369B1 - Motorisation assembly for switching points - Google Patents

Motorisation assembly for switching points Download PDF

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Publication number
EP0908369B1
EP0908369B1 EP98402467A EP98402467A EP0908369B1 EP 0908369 B1 EP0908369 B1 EP 0908369B1 EP 98402467 A EP98402467 A EP 98402467A EP 98402467 A EP98402467 A EP 98402467A EP 0908369 B1 EP0908369 B1 EP 0908369B1
Authority
EP
European Patent Office
Prior art keywords
flange
plate
torque limiter
balls
hub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98402467A
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German (de)
French (fr)
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EP0908369A1 (en
Inventor
Francis Carmes
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.)
Alstom Transport SA
Original Assignee
GEC Alsthom Transport SA
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Filing date
Publication date
Application filed by GEC Alsthom Transport SA filed Critical GEC Alsthom Transport SA
Publication of EP0908369A1 publication Critical patent/EP0908369A1/en
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Publication of EP0908369B1 publication Critical patent/EP0908369B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/06—Electric devices for operating points or scotch-blocks, e.g. using electromotive driving means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/10—Locking mechanisms for points; Means for indicating the setting of points
    • B61L5/107—Locking mechanisms for points; Means for indicating the setting of points electrical control of points position

Definitions

  • the present invention relates to a motorization assembly for operation of a switch comprising a drive motor whose shaft output drives a terminal control shaft of the assembly via a gearbox and a torque limiter, and comprising a detection system and overload signaling whose detection threshold is set to a value lower than that where the torque limiter stalls.
  • a motor assembly for operating a switch comprising a torque limiter is described in document EP 0 317 927.
  • the object of the present invention is to propose another solution applicable in all cases, and whatever the transmission of the movement: linear movement by endless screw, or swivel arm with drive roller and lyre.
  • the subject of the invention is therefore a motor assembly for the operation of a switch as defined above, characterized in that said overload detection and signaling system includes a trip unit mechanical in which the movement of a part, when said threshold is reached, is associated with a signaling device.
  • said mechanical trigger is located immediately after the engine, between it and the torque limiter.
  • said mechanical release includes a flange mounted axially movable on a hub linked to the output shaft of the drive motor, a plate linked to said torque limiter being mounted on said hub and positioned axially against an end flange of said hub, said plate and said flange being rotatably coupled by balls, each ball being partially housed in a notch in said flange and further entering a through hole of said plate exceeding its thickness, said flange being pushed against said balls by a thrust spring whose pressure is adjustable by a nut, said flange and said plate further comprising a second means rotating coupling comprising at least one drive finger linked to one of the two parts: flange or tray, and penetrating a hole in the other piece, said hole having a dimension greater than the diameter of said finger and thus allowing a certain relative angular displacement of the plate and the flange, this second means being active when, during an overload, the balls are driven out of their notch and move said flange against
  • the assembly includes a system of overload detection and signaling including a trip unit mechanical 6, associated with a signaling device 7.
  • the system detection threshold is adjustable at the trigger mechanical 6 and it is set to a value lower than the torque value for which the torque limiter 5 detaches.
  • the mechanical trigger 6, in the example shown, is located immediately after the engine, between it and the torque limiter 5. This position is advantageous because it signals an overload in any organ located downstream: the reducer 4, the needle mechanism attacked by the terminal control shaft 3 of the assembly, and of course the needles.
  • the signaling device 7 comprises a detector of proximity 8, such as an inductive detector for example, which detects displacement of a part 9 of the mechanical release 6 in the event of overload and control an alarm device 10, optical or audible.
  • a detector of proximity 8 such as an inductive detector for example, which detects displacement of a part 9 of the mechanical release 6 in the event of overload and control an alarm device 10, optical or audible.
  • the movement of the part 9 could also directly cause the closure of a contact actuating the alarm device 10.
  • a hub 11 On the output shaft 2 of the electric motor 1, a hub 11 is keyed the end of which located on the side of the torque limiter 5 includes a flange end 12. On this hub, and axially positioned against this flange by a circlip 13, a plate 14 is mounted. The plate 14 is secured to the part motor side torque limiter input. This is Exhibit 15 which is a more or less triangular or starry plateau.
  • the plate 14, linked to the input of the torque limiter, is coupled in rotation with the hub 11, and therefore with the drive shaft 2, via three balls 16.
  • Each ball 16 is partly housed in a notch 17 of the flange 12 of the hub, while the rest of the ball is housed in a hole opening 18 of the plate 14, moreover exceeding the thickness of the plate, such that a flange 19 mounted on the hub 11 and pushed by a spring pressure 20 comes to rest on these balls 16 and apply them against notches 17 of the collar 12.
  • the pressure of the spring 20 is adjusted by a nut 21 screwed onto the hub 11 and against which the spring 20 rests.
  • this plate 14 is coupled in rotation with the flange 12 by the balls 16.
  • this effort resulting in the level of the plate 14 by a resistant torque, exceeds the bearing force of the balls against the notches 17, these balls are driven from the notches and repel the flange 19 against the force of the spring 20.
  • the flange 12 pivots relative to the plate 14 until fingers 22, linked to the plate 14 and penetrating into holes 23 of the collar 12, of dimension greater than diameter of the fingers 22, bear against the walls of these holes 23 and thus allow continuity of the rotating coupling.
  • the displacement of the flange 19 which comprises a peripheral crown 9 is detected by the proximity detector 8 and the alarm device 10 is then put into action.
  • This overload detection and signaling system thus allows to give an alarm in case of progressive or instantaneous overload during a switch maneuver.
  • the trigger threshold adjusted by the pressure of the spring 20 by means of nut 21 is located at a level below that where the torque limiter 6 "off-hook".

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Lock And Its Accessories (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Control Of Electric Motors In General (AREA)
  • Valve Device For Special Equipments (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The motor (1) torque is transmitted through the flange (12) of a hub (11), keyed to the drive-shaft (2), to a plate (14) solidly connected to the torque limiter's input face (15). Flange and plate are connected by three equally spaced balls (16) retained, in holes (18) in the plate and in conical seats (17) in the flange, by a collar (19). A helical spring (20), seated in a grooved nut (21) on the threaded hub end, exerts pressure on the collar, adjustable by rotating the nut. If the torque, though below the limiter setting, exceeds a threshold dependent on this pressure, the balls, expelled from the seats, drive the collar towards the motor. A flange (9) on the collar approaches a proximity sensor (8), operates a contact-initiating an alarm, while torque transmission continues through contact of studs (22) on the plate with the sides of apertures (23) in the flange.

Description

La présente invention concerne un ensemble de motorisation pour la manoeuvre d'un aiguillage comprenant un moteur d'entraínement dont l'arbre de sortie entraíne un arbre de commande terminal de l'ensemble par l'intermédiaire d'un réducteur et d'un limiteur de couple, et comprenant un système de détection et de signalisation de surcharge dont le seuil de détection est réglé à une valeur inférieure à celle où le limiteur de couple décroche. Un ensemble de motorisation pour la manoeuvre d'un aiguillage comprenant un limiteur de couple est décrit dans le document EP 0 317 927.The present invention relates to a motorization assembly for operation of a switch comprising a drive motor whose shaft output drives a terminal control shaft of the assembly via a gearbox and a torque limiter, and comprising a detection system and overload signaling whose detection threshold is set to a value lower than that where the torque limiter stalls. A motor assembly for operating a switch comprising a torque limiter is described in document EP 0 317 927.

Les moyens connus de détection de surcharge sont la mesure de l'intensité du courant du moteur électrique de motorisation et/ou la mesure du temps de fonctionnement du mécanisme d'aiguille. Cependant, de tels moyens ne sont pas toujours utilisables, en particulier dans le cas où l'on utilise un moteur triphasé asynchrone, les variations de l'intensité et du temps de manoeuvre étant trop faibles.Known means of overload detection are the measurement of the current of the electric motorization motor and / or the measurement of the needle mechanism operating time. However, such means are not always usable, especially when using a three-phase asynchronous motor, the variations in intensity and time of maneuver being too weak.

La présente invention a pour but de proposer une autre solution applicable à tous les cas, et quelle que soit la transmission du mouvement : mouvement linéaire par vis sans fin, ou bras pivotant avec galet d'entraínement et lyre.The object of the present invention is to propose another solution applicable in all cases, and whatever the transmission of the movement: linear movement by endless screw, or swivel arm with drive roller and lyre.

L'invention a ainsi pour objet un ensemble de motorisation pour la manoeuvre d'un aiguillage tel que défini, ci-dessus, caractérisé en ce que ledit système de détection et de signalisation de surcharge comprend un déclencheur mécanique dans lequel le déplacement d'une pièce, lorsque ledit seuil est atteint, est associé à un dispositif de signalisation.The subject of the invention is therefore a motor assembly for the operation of a switch as defined above, characterized in that said overload detection and signaling system includes a trip unit mechanical in which the movement of a part, when said threshold is reached, is associated with a signaling device.

Avantageusement, ledit déclencheur mécanique est situé immédiatement après le moteur, entre celui-ci et le limiteur de couple.Advantageously, said mechanical trigger is located immediately after the engine, between it and the torque limiter.

Selon une réalisation particulière de la présente invention, ledit déclencheur mécanique comprend un flasque monté mobile axialement sur un moyeu lié à l'arbre de sortie du moteur d'entraínement, un plateau lié audit limiteur de couple étant monté sur ledit moyeu et positionné axialement contre une collerette d'extrémité dudit moyeu, ledit plateau et ladite collerette étant accouplés en rotation par des billes, chaque bille étant logée partiellement dans une encoche de ladite collerette et pénétrant en outre dans un trou débouchant dudit plateau en dépassant son épaisseur, ledit flasque étant poussé contre lesdites billes par un ressort de poussée dont la pression est réglable par un écrou, ladite collerette et ledit plateau comportant en outre un second moyen d'accouplement en rotation comprenant au moins un doigt d'entraínement lié à l'une des deux pièces : collerette ou plateau, et pénétrant dans un trou de l'autre pièce, ledit trou ayant une dimension supérieure au diamètre dudit doigt et permettant ainsi un certain déplacement angulaire relatif du plateau et de la collerette, ce second moyen étant actif lorsque, lors d'une surcharge, les billes sont chassées de leur encoche et viennent déplacer ledit flasque contre l'effort dudit ressort de poussée.According to a particular embodiment of the present invention, said mechanical release includes a flange mounted axially movable on a hub linked to the output shaft of the drive motor, a plate linked to said torque limiter being mounted on said hub and positioned axially against an end flange of said hub, said plate and said flange being rotatably coupled by balls, each ball being partially housed in a notch in said flange and further entering a through hole of said plate exceeding its thickness, said flange being pushed against said balls by a thrust spring whose pressure is adjustable by a nut, said flange and said plate further comprising a second means rotating coupling comprising at least one drive finger linked to one of the two parts: flange or tray, and penetrating a hole in the other piece, said hole having a dimension greater than the diameter of said finger and thus allowing a certain relative angular displacement of the plate and the flange, this second means being active when, during an overload, the balls are driven out of their notch and move said flange against the force said thrust spring.

On va maintenant donner la description d'un exemple de mise en oeuvre de l'invention en se référant au dessin annexé dans lequel :

  • La figure 1 représente schématiquement un ensemble de motorisation pour la manoeuvre d'un aiguillage.
  • La figure 2 montre en détail une partie de la figure 1 correspondant au déclencheur mécanique.
    • We will now give the description of an example of implementation of the invention with reference to the accompanying drawing in which:
  • Figure 1 shows schematically a motor assembly for the operation of a switch.
  • Figure 2 shows in detail a part of Figure 1 corresponding to the mechanical release.

    • En se référant à la figure 1, on voit un moteur électrique 1 dont l'arbre de sortie 2 entraíne un arbre de commande terminal 3 de l'ensemble par l'intermédiaire d'un réducteur 4 et d'un limiteur de couple 5.Referring to Figure 1, we see an electric motor 1 whose shaft output 2 drives a terminal control shaft 3 of the assembly by through a reduction gear 4 and a torque limiter 5.

    Conformément à l'invention, l'ensemble comprend un système de détection et de signalisation de surcharge comportant un déclencheur mécanique 6, associé à un dispositif de signalisation 7.In accordance with the invention, the assembly includes a system of overload detection and signaling including a trip unit mechanical 6, associated with a signaling device 7.

    Le seuil de détection du système est réglable au niveau du déclencheur mécanique 6 et il est réglé à une valeur inférieure à la valeur du couple pour lequel le limiteur de couple 5 décroche.The system detection threshold is adjustable at the trigger mechanical 6 and it is set to a value lower than the torque value for which the torque limiter 5 detaches.

    Le déclencheur mécanique 6, dans l'exemple représenté, est situé immédiatement après le moteur, entre celui-ci et le limiteur de couple 5. Cette position est avantageuse, car elle permet de signaler une surcharge dans n'importe quel organe situé en aval : le réducteur 4, le mécanisme d'aiguilles attaqué par l'arbre de commande terminal 3 de l'ensemble, et bien sûr les aiguilles.The mechanical trigger 6, in the example shown, is located immediately after the engine, between it and the torque limiter 5. This position is advantageous because it signals an overload in any organ located downstream: the reducer 4, the needle mechanism attacked by the terminal control shaft 3 of the assembly, and of course the needles.

    Sur la figure 1, le dispositif de signalisation 7 comprend un détecteur de proximité 8, tel qu'un détecteur inductif par exemple, qui détecte le déplacement d'une pièce 9 du déclencheur mécanique 6 en cas de surcharge et commande un dispositif d'alarme 10, optique ou sonore.In FIG. 1, the signaling device 7 comprises a detector of proximity 8, such as an inductive detector for example, which detects displacement of a part 9 of the mechanical release 6 in the event of overload and control an alarm device 10, optical or audible.

    A la place d'un détecteur de proximité 8, le déplacement de la pièce 9 pourrait aussi provoquer directement la fermeture d'un contact actionnant le dispositif d'alarme 10.Instead of a proximity sensor 8, the movement of the part 9 could also directly cause the closure of a contact actuating the alarm device 10.

    On va maintenant décrire plus précisément le déclencheur mécanique 6 en se référant à la figure 2. We will now describe more precisely the mechanical trigger 6 referring to figure 2.

    Sur l'arbre de sortie 2 du moteur électrique 1, est claveté un moyeu 11 dont l'extrémité située du côté du limiteur de couple 5 comporte une collerette d'extrémité 12. Sur ce moyeu, et axialement positionné contre cette collerette par un circlip 13, est monté un plateau 14. Le plateau 14 est solidarisé à la pièce d'entrée du limiteur de couple côté moteur. Il s'agit ici d'une pièce 15 qui est un plateau plus ou moins triangulaire ou étoilé.On the output shaft 2 of the electric motor 1, a hub 11 is keyed the end of which located on the side of the torque limiter 5 includes a flange end 12. On this hub, and axially positioned against this flange by a circlip 13, a plate 14 is mounted. The plate 14 is secured to the part motor side torque limiter input. This is Exhibit 15 which is a more or less triangular or starry plateau.

    Le plateau 14, lié à l'entrée du limiteur de couple, est accouplé en rotation avec le moyeu 11, et donc avec l'arbre moteur 2, par l'intermédiaire de trois billes 16. Chaque bille 16 est logée en partie dans une encoche 17 de la collerette 12 du moyeu, tandis que le reste de la bille est logé dans un trou débouchant 18 du plateau 14 en dépassant d'ailleurs l'épaisseur du plateau, de telle sorte qu'un flasque 19 monté sur le moyeu 11 et poussé par un ressort de pression 20 vient s'appuyer sur ces billes 16 et les appliquer contre les encoches 17 de la collerette 12. La pression du ressort 20 est réglé par un écrou 21 vissé sur le moyeu 11 et contre lequel s'appuie le ressort 20. Ainsi, tant que l'effort résistant de tout l'ensemble situé en aval du plateau 14 reste inférieur à une certaine valeur, réglée par l'écrou 21, ce plateau 14 est accouplé en rotation avec la collerette 12 par les billes 16. Dès que cet effort, se traduisant au niveau du plateau 14 par un couple résistant, dépasse l'effort d'appui des billes contre les encoches 17, ces billes sont chassées des encoches et viennent repousser le flasque 19 contre l'effort du ressort 20. A ce moment, la collerette 12 pivote par rapport au plateau 14 jusqu'à ce que des doigts 22, liés au plateau 14 et pénétrant dans des trous 23 de la collerette 12, de dimension supérieure au diamètre des doigts 22, viennent s'appuyer contre les parois de ces trous 23 et permettent ainsi la continuité de l'accouplement en rotation.The plate 14, linked to the input of the torque limiter, is coupled in rotation with the hub 11, and therefore with the drive shaft 2, via three balls 16. Each ball 16 is partly housed in a notch 17 of the flange 12 of the hub, while the rest of the ball is housed in a hole opening 18 of the plate 14, moreover exceeding the thickness of the plate, such that a flange 19 mounted on the hub 11 and pushed by a spring pressure 20 comes to rest on these balls 16 and apply them against notches 17 of the collar 12. The pressure of the spring 20 is adjusted by a nut 21 screwed onto the hub 11 and against which the spring 20 rests. Thus, as long as the resistance force of the whole assembly located downstream of the plate 14 remains less than a certain value, adjusted by the nut 21, this plate 14 is coupled in rotation with the flange 12 by the balls 16. As soon as this effort, resulting in the level of the plate 14 by a resistant torque, exceeds the bearing force of the balls against the notches 17, these balls are driven from the notches and repel the flange 19 against the force of the spring 20. At this time, the flange 12 pivots relative to the plate 14 until fingers 22, linked to the plate 14 and penetrating into holes 23 of the collar 12, of dimension greater than diameter of the fingers 22, bear against the walls of these holes 23 and thus allow continuity of the rotating coupling.

    Le déplacement du flasque 19 qui comporte une couronne périphérique 9 est détecté par le détecteur de proximité 8 et le dispositif d'alarme 10 est alors mis en action.The displacement of the flange 19 which comprises a peripheral crown 9 is detected by the proximity detector 8 and the alarm device 10 is then put into action.

    Ce système de détection et de signalisation de surcharge permet ainsi de donner une alarme en cas de surcharge progressive ou instantanée lors d'une manoeuvre de l'aiguillage.This overload detection and signaling system thus allows to give an alarm in case of progressive or instantaneous overload during a switch maneuver.

    Bien entendu, le seuil de déclenchement, réglé par la pression du ressort 20 au moyen de l'écrou 21 est situé à un niveau inférieur à celui où le limiteur de couple 6 "décroche".Of course, the trigger threshold, adjusted by the pressure of the spring 20 by means of nut 21 is located at a level below that where the torque limiter 6 "off-hook".

    Claims (4)

    1. A drive assembly for throwing points including a drive motor (1) whose output shaft (2) drives a terminal control shaft (3) of the assembly via a reducer (4) and a torque limiter (5) and including an overload detection and signalling system whose detection threshold is set to a value lower than that at which the torque limiter begins to be operative, characterized in that said overload detection and signalling system includes a mechanical tripping device (6) in which, when said threshold is reached, the movement of a part (9) is associated with a signalling device (7).
    2. A drive assembly according to claim 1, characterized in that said mechanical tripping device (6) is situated immediately after the motor (1) between it and the torque limiter (5).
    3. A drive assembly according to claim 2, characterized in that said mechanical tripping device (6) includes a flange (9-19) mounted so as to be mobile axially on a hub (11) attached to the output shaft (2) of the drive motor (1), a plate (14) attached to said torque limiter (5) being mounted on said hub and positioned axially against an end flange (12) of said hub (11), said plate (14) and said flange (12) being rotationally coupled by balls (16), each ball (16) being housed partly in a notch (17) in said flange (12) and further penetrating into an open hole (18) in said plate (14) and projecting from its thickness, said flange (9-19) being pushed against said balls (16) by a thrust spring (20) whose pressure is adjustable by means of a nut (21), said flange (12) and said plate (14) further including second rotational coupling means including at least one drive finger (22) attached to one of the pair of parts comprising the flange (12) and the plate (14), and penetrating into a hole (23) in the other part of said pair, said hole having a dimension greater than the diameter of said finger and thereby enabling some relative angular displacement of the plate (14) and the flange (12), said second means being active when, in the event of an overload, the balls (16) are expelled from their notch (17) and move said flange (9-19) against the force of said thrust spring (20).
    4. A drive assembly according to any of claims 1 to 3, characterized in that the signalling device includes a proximity detector (8).
    EP98402467A 1997-10-07 1998-10-06 Motorisation assembly for switching points Expired - Lifetime EP0908369B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9712509 1997-10-07
    FR9712509A FR2769278B1 (en) 1997-10-07 1997-10-07 MOTORIZATION ASSEMBLY FOR THE OPERATION OF A SWITCH

    Publications (2)

    Publication Number Publication Date
    EP0908369A1 EP0908369A1 (en) 1999-04-14
    EP0908369B1 true EP0908369B1 (en) 2002-01-16

    Family

    ID=9511934

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP98402467A Expired - Lifetime EP0908369B1 (en) 1997-10-07 1998-10-06 Motorisation assembly for switching points

    Country Status (8)

    Country Link
    EP (1) EP0908369B1 (en)
    AT (1) ATE211980T1 (en)
    BR (1) BR9803820B1 (en)
    DE (1) DE69803154T2 (en)
    DK (1) DK0908369T3 (en)
    ES (1) ES2169897T3 (en)
    FR (1) FR2769278B1 (en)
    PT (1) PT908369E (en)

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2896752B1 (en) * 2006-02-01 2008-04-25 Alstom Transport Sa DEVICE FOR ACTUATING A NEEDLE.

    Family Cites Families (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    ES470778A1 (en) * 1977-06-18 1979-01-16 Brown Sadi Sa David Improvement of torque limiting device
    FR2623461B1 (en) * 1987-11-23 1990-03-02 Alsthom DEVICE FOR MOTORIZING A NEEDLE
    BE1006595A6 (en) * 1993-01-20 1994-10-25 Cockerill Sambre Sa Programmer for control rotary limit.

    Also Published As

    Publication number Publication date
    BR9803820B1 (en) 2008-11-18
    BR9803820A (en) 1999-12-07
    DE69803154T2 (en) 2002-07-18
    FR2769278A1 (en) 1999-04-09
    DE69803154D1 (en) 2002-02-21
    DK0908369T3 (en) 2002-05-06
    EP0908369A1 (en) 1999-04-14
    ATE211980T1 (en) 2002-02-15
    PT908369E (en) 2002-06-28
    FR2769278B1 (en) 2002-10-11
    ES2169897T3 (en) 2002-07-16

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