EP1790548B1 - Driving device for railway switch blades - Google Patents
Driving device for railway switch blades Download PDFInfo
- Publication number
- EP1790548B1 EP1790548B1 EP06291797A EP06291797A EP1790548B1 EP 1790548 B1 EP1790548 B1 EP 1790548B1 EP 06291797 A EP06291797 A EP 06291797A EP 06291797 A EP06291797 A EP 06291797A EP 1790548 B1 EP1790548 B1 EP 1790548B1
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- European Patent Office
- Prior art keywords
- lever
- control
- control lever
- reversing
- base
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- 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
- B61L5/02—Mechanical devices for operating points or scotch-blocks, e.g. local manual control
Definitions
- the present invention relates to a railroad switching blades maneuvering device.
- the switches for transferring a convoy to one or other of two alternative routes comprise movable rail elements called needle blades. Following the selected path, one of the needle blades is applied to one of the fixed rails, called counter rail, of the track to allow the deviation of the convoy. On the contrary, the other needle blade is separated from the associated fixed rail.
- these movable elements of the switches are moved by a single and autonomous actuating mechanism forming an actuator.
- the latter is connected to the moving needle blades by a set of rods forming a linkage.
- the needle blades are linked to the operating mechanism by a linkage which is linked to the needle blades at several points spaced along the length of the needle blades.
- the operating mechanism is installed along the track in the vicinity of the tip of the needle blades, that is to say in the vicinity of their free end.
- a succession of long rods are arranged following each other along the track to form the linkage. These rods are connected to each other by means of maneuvering the needle blades.
- These operating devices form corner references connected, on the one hand, to the successive rods extending along the track and, on the other hand, to transverse control rods arranged perpendicularly to the track and on which are connected the needle blades to be moved.
- the rods arranged along the track are relatively long and are subject to expansion phenomena during changes in ambient temperature. Under the effect of reducing or increasing the length of these rods, the operating devices to which the transverse control rods are connected are actuated, which causes displacements of the needle blades and unintentional adjustments of the position of these blades. These maladjustments can cause failures in the operation of the railway network.
- This document describes a device equipped with a return lever provided with a fork adapted to cooperate with a roller carried by a control bar integrated in the linkage.
- the roller is contained in the fork to ensure the normal operation of the return lever and therefore the needle blade.
- the roller escapes from the fork, avoiding the drive of the return lever and therefore of the needle blade.
- This device is very difficult to produce industrially, especially for controlling the needle blade where it is movable only on a short stroke, since some components must then withstand very high forces which requires that these constituents are very robust and so very bulky.
- the object of the invention is to propose a switching control device that is easy to make and compact.
- the subject of the invention is a device for maneuvering the needle blades of a switch, characterized in that the control member comprises a control lever articulated with respect to the base and comprising a connecting arm with an actuator for its drive, which control lever is adapted to cooperate with the return lever for driving the return lever under the action of the actuator on said at least a median portion of the travel stroke of the lever of ordered.
- the invention also relates to a switch comprising at least one movable needle blade and an operating device connected to an operating mechanism, characterized in that it comprises an operating device as defined above interposed between the operating mechanism and the or each switching blade.
- FIG. 1 On the figure 1 is shown schematically a switch 10. This is adapted to ensure the connection of a first channel 12 provided at one end alternately to two lanes 14, 16 provided at the other end of the switch.
- the switch has two outer fixed rails, one, 18, generally rectilinear and the other, 20, generally curved. Between these two fixed rails are arranged movable needle blades 22, 24 adapted to be applied along the fixed rails respectively 18 and 20. These needle blades are bevelled towards their points 22A, 24A. At their other end, denoted 22B, 24B, the needle blades are connected in the extension of fixed rails, not shown, of the two channels 14, 16. This end forms the heel of the needle blades.
- the switch 10 is associated with an installation for maneuvering the needle blades.
- This comprises an actuator consisting of an operating mechanism 30, a linkage 32 extending generally along the switch over most of the length of the needle blades and transverse control rods 33 connected to the linkage 32 with regular spaces and connected to the needle blades 22 and 24.
- the linkage 32 is connected to the actuating mechanism 30 for its actuation.
- the operating mechanism 30 is fixed in point relative to the track on the side of the track 12 in the vicinity of the points 22A, 24A of the needle blades.
- This operating mechanism is formed for example of an electromechanical actuator.
- the linkage 32 comprises a succession of longitudinal rods 34 connected in series with each other by operating devices 36 interposed between two longitudinal rods 34.
- the operating mechanism 30 is connected to one end of the linkage 32.
- the operating devices 36 are distributed along the length of the needle blades being separated from each other for example by a distance of 2 m to 7 m.
- One or more successive rods 34 connects two successive operating devices.
- an inverter 38 is disposed between two successive actuators.
- the transverse control rods 33 are each connected to an output of an operating device 36.
- An operating device 36 according to the invention is represented on a larger scale on the Figures 2A, 2B , and 3 to 6 .
- It comprises essentially a base 40, a control lever 42 integrated in the linkage 32 between two successive rods and a movable return member 44 formed of a lever hinged relative to the base 40.
- the base 40 comprises a plate 46 for fixing the operating device to the ground, for example at the end of a crosspiece of the switch, and a housing 48 inside which the control lever 42 and the return lever 44 are partially arranged.
- the control lever 42 is articulated around a Y-Y axis parallel to the axis of articulation of the return lever 44 noted X-X. It has two arms arranged parallel to each other, one above the other and extending on the same side of the Y-axis.
- One of the arms 49 forming a connecting arm to the linkage 32 extends outside the housing 48. At its free end 49A, two successive rods of the linkage 32 are hinged about an axis Y1-Y1.
- the second arm 50 forming a coupling arm is formed of a trapezoidal general plate flared towards its free end 50A.
- the coupling arm 50 is shorter than the connecting arm 49. It extends into the housing 48.
- the return lever 44 is hinged relative to the base 40 about the generally vertical axis XX extending perpendicularly to the plane of the linkage 32. It comprises a driving arm 54 projecting out of the casing 48 through a lateral slot. At the projecting end noted 56 of the arm 54 is connected a transverse control rod 33 via an elastic connection.
- the return lever 44 further comprises a control arm 58 integral with the drive arm 54.
- the control arm 58 is movable inside the housing 48.
- the return lever 44 has, at its free end, a shape fork assembly defined by two end teeth 60A, 60B spaced from one another and projecting towards the control lever 42.
- the teeth 60A, 60B have, along their generally facing surfaces, cam surfaces 62A, 62B diverging from each other away from the X-X axis. These cam surfaces 62A, 62B are adapted to cooperate with associated cams 64A, 64B carried by the coupling arm 50 of the control lever.
- the counter-cams 64A, 64B are formed by rotary rollers carried by the free end of the coupling arm 50. These rollers are articulated about parallel axes extending parallel to the axes XX and YY. The rollers are offset angularly with respect to the Y-Y axis and are equidistant from it.
- the cam surfaces 62A, 62B are interrupted at the end of the teeth 60A, 60B to allow clearance of the cams 64A, 64B.
- the free ends of the teeth form cylindrical generally cylindrical abutment surfaces 66A, 66B which are generally and respectively concentric with the displacement described by the outside diameter of the two rollers 64A, 64B of the deflection lever 44, being in support or at least facing of one or the other of the counter-cams 64A, 64B.
- a contact 70 is secured to the base 40. It is equipped with a movable feeler finger 72. This contact is able to indicate the position of the operating device. It is for example closed when the feeler finger 72 is released under the action of a spring proper to the contact and open when the probe finger is depressed.
- the control lever 42 and in particular preferably the coupling arm 50 have a cam 73 in an arc having two ends 74A, 74B. It is adapted to push the probe finger when it is traversed along its length and to release it when it reaches its ends 74A, 74B.
- the switch is in a position such that the needle blade 22 is applied against the fixed rail 18, while the needle blade 24 is spaced from the fixed rail 20.
- the mechanism of maneuver 30 is in a first position and thus imposes a first position to the rods 34.
- the operating devices 36 are in the position illustrated on the Figure 2B , the control lever 42 is generally moved to the right and the end 56 of the driver arm is turned downwards in the figure.
- the control lever 42 is in a first position while the driving arm 54 is in a first extreme position.
- the roller 64A is disposed exactly opposite the end of the tooth 60A, and bears against the abutment surface 66A of the return lever. The roller 64A then forms a stop for the return lever 44, preventing the driver arm 54 from being turned towards the top of the figure. Thus, the needle blades are wedged in the position illustrated on the figure 1 .
- control lever 42 is driven by the action of the rods 34 controlled by the operating mechanism 30, as illustrated by the arrow F on the figure 3 .
- the roller 66A then moves to be no longer facing the bearing surface 66A, thus ensuring release of the return lever 44.
- the probe finger 72 reaches the end of the cam and is supported on the surface lateral
- the roller 64B comes into contact with the cam surface 62B, in the vicinity of the base of the tooth 60B. The roller then leans on this cam surface. In doing so, the roller 64B drives the return lever 44 by tilting it in the opposite direction of clockwise.
- the roller moves along the cam surface 62B to its free end where it then disengages from the cam surface 62B, the latter being interrupted.
- the roller then engages against the bearing surface 66B.
- the roller 64B travels along the bearing surface 66B to the illustrated position on the figure 6 .
- the return lever 44 is only displaced in the middle part of the displacement stroke, whereas the return lever 44 is not moved when the control lever moves on end portions of the travel path from the first position or the second position to the middle portion of the stroke.
- the positioning of the return lever 44 does not depend on the first and second positions of the control lever 42, which vary with the length of the rods 34, due to the expansion.
- two rollers are used to form counter-cams adapted to cooperate with the cam surfaces 62A, 62B, which is preferable.
- the same member could be used to cooperate with both surfaces 62A, 62B.
- cam surfaces 62A, 62B are provided on the lever 42 and the cam follower is provided on the arm 58 of the movable return lever.
- the device with a rotary control lever is insensitive to the presence of ice or snow, since the contacting surfaces of the moving parts relative to each other are reduced.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Control Devices (AREA)
- Multiple-Way Valves (AREA)
- Massaging Devices (AREA)
- Switches With Compound Operations (AREA)
- Mechanisms For Operating Contacts (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Harvester Elements (AREA)
Abstract
Description
La présente invention concerne un dispositif de manoeuvre de lames d'aiguillage pour chemin de fer.The present invention relates to a railroad switching blades maneuvering device.
En particulier, elle concerne un dispositif du type comportant :
- un socle;
- un organe de commande monté mobile par rapport au socle entre une première position et une seconde position suivant une course de déplacement et propre à être relié à un actionneur ;
- un levier de renvoi articulé par rapport au socle ; et
- des moyens d'accouplement du mouvement de l'organe de commande et du levier de renvoi pour le déplacement du levier de renvoi sous l'action du mouvement de l'organe de commande de sa première position à sa seconde position, lesquels moyens d'accouplement sont adaptés pour que, lors du déplacement de l'organe de commande sur au moins une partie médiane de ladite course de déplacement, le levier de renvoi est entraîné par l'organe de commande entre une première position extrême et une seconde position extrême, et lors du déplacement de l'organe de commande sur au moins une partie extrême non nulle de la course de déplacement comprise entre la partie médiane de ladite course de déplacement et la première ou la seconde position, le levier de renvoi n'est pas entraîné par l'organe de commande.
- a pedestal;
- a control member movably mounted relative to the base between a first position and a second position in a displacement path and adapted to be connected to an actuator;
- a return lever hinged to the base; and
- means for coupling the movement of the control member and the return lever for the displacement of the return lever under the action of the movement of the control member from its first position to its second position, which means of coupling are adapted so that, during the displacement of the control member on at least a median portion of said displacement stroke, the return lever is driven by the control member between a first extreme position and a second extreme position, and during the displacement of the control member on at least one non-zero end portion of the displacement path between the middle portion of said displacement stroke and the first or second position, the return lever is not driven. by the control member.
Les aiguillages permettant le transfert d'un convoi vers l'une ou l'autre de deux voies alternatives comportent des éléments de rail mobiles appelés lames d'aiguille. Suivant la voie sélectionnée, l'une des lames d'aiguille s'applique sur l'un des rails fixes, appelé contre-rail, de la voie pour permettre la déviation du convoi. Au contraire, l'autre lame d'aiguille est s'écartée du rail fixe associé.The switches for transferring a convoy to one or other of two alternative routes comprise movable rail elements called needle blades. Following the selected path, one of the needle blades is applied to one of the fixed rails, called counter rail, of the track to allow the deviation of the convoy. On the contrary, the other needle blade is separated from the associated fixed rail.
Dans les réseaux ferroviaires, ces éléments mobiles des aiguillages sont déplacés par un mécanisme de manoeuvre unique et autonome formant un actionneur. Ce dernier est relié aux lames d'aiguille mobiles par un ensemble de tringles formant une tringlerie. En particulier, pour les aiguillages de grande longueur, les lames d'aiguille sont liées au mécanisme de manoeuvre par une tringlerie qui est liée aux lames d'aiguille en plusieurs points espacés suivant la longueur des lames d'aiguille.In railway networks, these movable elements of the switches are moved by a single and autonomous actuating mechanism forming an actuator. The latter is connected to the moving needle blades by a set of rods forming a linkage. In particular, for switches of great length, the needle blades are linked to the operating mechanism by a linkage which is linked to the needle blades at several points spaced along the length of the needle blades.
Le mécanisme de manoeuvre est installé le long de la voie au voisinage de la pointe des lames d'aiguille, c'est-à-dire au voisinage de leur extrémité libre.The operating mechanism is installed along the track in the vicinity of the tip of the needle blades, that is to say in the vicinity of their free end.
Une succession de tringles longues sont disposées à la suite les unes des autres le long de la voie pour former la tringlerie. Ces tringles sont reliées les unes aux autres par des dispositifs de manoeuvre des lames d'aiguille. Ces dispositifs de manoeuvre forment des renvois d'angle reliés, d'une part, aux tringles successives s'étendant le long de la voie et, d'autre part, à des tiges de commande transversales disposées perpendiculairement à la voie et sur lesquelles sont reliés les lames d'aiguille devant être déplacées.A succession of long rods are arranged following each other along the track to form the linkage. These rods are connected to each other by means of maneuvering the needle blades. These operating devices form corner references connected, on the one hand, to the successive rods extending along the track and, on the other hand, to transverse control rods arranged perpendicularly to the track and on which are connected the needle blades to be moved.
Lors du déplacement des tringles le long de la voie, sous l'action du mécanisme de manoeuvre, les tiges de commande transversales sont déplacées sous l'action des dispositifs de manoeuvre formant renvois d'angle, ce qui provoque le déplacement des lames d'aiguille.When moving the rods along the track, under the action of the operating mechanism, the transverse control rods are moved under the action of the maneuvering devices forming angle returns, which causes the displacement of the blades of needle.
Les tringles disposées le long de la voie sont relativement longues et sont soumises aux phénomènes de dilatation lors des variations de température ambiante. Sous l'effet de la réduction ou de l'augmentation de la longueur de ces tringles, les dispositifs de manoeuvre auxquels sont reliées les tiges de commande transversales sont actionnés, ce qui provoque des déplacements des lames d'aiguille et des déréglages involontaires de la position de ces lames. Ces déréglages peuvent provoquer des défaillances dans le fonctionnement du réseau ferroviaire.The rods arranged along the track are relatively long and are subject to expansion phenomena during changes in ambient temperature. Under the effect of reducing or increasing the length of these rods, the operating devices to which the transverse control rods are connected are actuated, which causes displacements of the needle blades and unintentional adjustments of the position of these blades. These maladjustments can cause failures in the operation of the railway network.
Un dispositif permettant la commande d'un aiguillage à partir d'un mécanisme de manoeuvre unique actionnant des tringles successives, sans que les lames d'aiguille de l'aiguillage ne soient déplacées sous l'effet de la dilatation des tringles de manoeuvre est proposé dans le document
Ce document décrit un dispositif équipé d'un levier de renvoi pourvu d'une fourche propre à coopérer avec un galet porté par une barre de commande intégrée dans la tringlerie. Le galet est contenu dans la fourche pour assurer la manoeuvre normale du levier de renvoi et donc de la lame d'aiguille. Pour des déplacements plus amples de la barre de commande, notamment sous l'effet de la dilatation, le galet s'échappe de la fourche, évitant l'entraînement du levier de renvoi et donc de la lame d'aiguille.This document describes a device equipped with a return lever provided with a fork adapted to cooperate with a roller carried by a control bar integrated in the linkage. The roller is contained in the fork to ensure the normal operation of the return lever and therefore the needle blade. For further movements of the control bar, in particular under the effect of the expansion, the roller escapes from the fork, avoiding the drive of the return lever and therefore of the needle blade.
Ce dispositif est très difficile à réaliser industriellement, notamment pour commander la lame d'aiguille là où elle n'est mobile que sur une faible course, puisque certains constituants doivent alors supporter des efforts très importants ce qui nécessite que ces constituants soient très robustes et donc très volumineux.This device is very difficult to produce industrially, especially for controlling the needle blade where it is movable only on a short stroke, since some components must then withstand very high forces which requires that these constituents are very robust and so very bulky.
L'invention a pour but de proposer un dispositif de commande d'aiguillage facile à réaliser et peu encombrant.The object of the invention is to propose a switching control device that is easy to make and compact.
A cet effet, l'invention a pour objet un dispositif de manoeuvre de lames d'aiguille d'un aiguillage, caractérisé en ce que l'organe de commande comporte un levier de commande articulé par rapport au socle et comprenant un bras de liaison à un actionneur pour son entraînement, lequel levier de commande est propre à coopérer avec le levier de renvoi pour l'entraînement du levier de renvoi sous l'action de l'actionneur sur ladite au moins une partie médiane de la course de déplacement du levier de commande.For this purpose, the subject of the invention is a device for maneuvering the needle blades of a switch, characterized in that the control member comprises a control lever articulated with respect to the base and comprising a connecting arm with an actuator for its drive, which control lever is adapted to cooperate with the return lever for driving the return lever under the action of the actuator on said at least a median portion of the travel stroke of the lever of ordered.
Suivant des modes particuliers de réalisation, le dispositif de manoeuvre comporte l'une ou plusieurs des caractéristiques suivantes :
- le levier de commande est tel que les points d'action de l'actionneur sur le levier de commande et du levier de commande sur le levier de renvoi étant disposés d'un même côté de l'axe d'articulation du levier de commande par rapport au socle ;
- le levier de commande et le levier de renvoi comportent des butées complémentaires d'immobilisation du levier de renvoi dans au moins une position extrême ;
- le levier de renvoi comporte au moins une surface de came et le levier de commande comporte au moins une contre-came propre à assurer le déplacement de l'organe de renvoi vers une position extrême, lors du déplacement du levier de commande sur la partie médiane de la course de déplacement et la ou chaque surface de came comporte une interruption pour assurer un dégagement de la ou chaque contre-came à l'écart de la ou chaque came lors du déplacement du levier de commande sur la partie extrême non nulle de la course de déplacement ;
- la ou chaque contre-came forme une butée d'immobilisation du levier de renvoi lorsque le levier de renvoi est dans une position extrême et le levier de commande est sur une partie extrême non nulle de la course de déplacement ;
- le levier de renvoi présente une fourche délimitée par deux dents sur les faces en regard desquelles sont ménagées deux surfaces de cames divergentes ;
- la ou chaque contre-came comporte un galet rotatif ;
- le levier de commande comporte deux contre-cames décalées angulairement autour de l'axe de rotation du levier de commande par rapport au socle ; et
- la distance séparant l'axe d'articulation du levier de commande par rapport au socle du point de liaison du levier de commande à l'actionneur est supérieure à la distance séparant l'axe d'articulation du levier de commande par rapport au socle de la ou chaque contre-came propre à coopérer avec le levier de renvoi.
- the control lever is such that the action points of the actuator on the control lever and the control lever on the return lever being arranged on the same side of the axis of articulation of the control lever by relation to the base;
- the control lever and the return lever comprise complementary stops for immobilizing the return lever in at least one extreme position;
- the return lever comprises at least one cam surface and the control lever comprises at least one counter cam adapted to ensure the displacement of the return member to an extreme position, during the movement of the control lever on the middle part of the displacement stroke and the or each cam surface has an interruption to ensure clearance of the or each counter-cam away from the or each cam during the movement of the control lever on the non-zero end portion of the travel race;
- the or each cam follower forms a stop for immobilizing the return lever when the return lever is in an extreme position and the control lever is on a non-zero end portion of the displacement stroke;
- the return lever has a fork delimited by two teeth on the faces opposite which are formed two diverging cam surfaces;
- the or each cam follower comprises a rotary roller;
- the control lever comprises two counter-cams angularly offset about the axis of rotation of the control lever relative to the base; and
- the distance separating the axis of articulation of the control lever from the base of the point of connection of the control lever to the actuator is greater than the distance separating the axis of articulation of the control lever from the base of the the or each counter cam adapted to cooperate with the return lever.
L'invention a également pour objet un aiguillage comportant au moins une lame d'aiguille mobile et un dispositif de manoeuvre relié à un mécanisme de manoeuvre, caractérisé en ce qu'il comporte un dispositif de manoeuvre tel que défini ci-dessus interposé entre le mécanisme de manoeuvre et la ou chaque lame d'aiguillage.The invention also relates to a switch comprising at least one movable needle blade and an operating device connected to an operating mechanism, characterized in that it comprises an operating device as defined above interposed between the operating mechanism and the or each switching blade.
L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins, sur lesquels :
- la
figure 1 est une vue schématique d'un aiguillage selon l'invention ; - la
figure 2A est une vue de côté du dispositif de manoeuvre dans la position de lafigure 2 ; - la
figure 2B est une vue schématique de dessus du dispositif de manoeuvre selon l'invention dans une position extrême ; - les
figures 3, 4 ,5 et 6 sont des vues identiques à celle de lafigure 2B du dispositif de manoeuvre dans des positions différentes successives du dispositif de manoeuvre.
- the
figure 1 is a schematic view of a switch according to the invention; - the
Figure 2A is a side view of the maneuvering device in the position of thefigure 2 ; - the
Figure 2B is a schematic view from above of the operating device according to the invention in an extreme position; - the
Figures 3, 4 ,5 and 6 are views identical to that of theFigure 2B of the operating device in different successive positions of the operating device.
Sur la
Sur la
L'aiguillage 10 est associé à une installation de manoeuvre des lames d'aiguille. Celle-ci comporte un actionneur constitué d'un mécanisme de manoeuvre 30, une tringlerie 32 s'étendant généralement le long de l'aiguillage sur l'essentiel de la longueur des lames d'aiguille et des tiges de commande transversales 33 reliées à la tringlerie 32 à espaces réguliers et connectées aux lames d'aiguille 22 et 24. La tringlerie 32 est reliée au mécanisme de manoeuvre 30 pour son actionnement.The
Plus précisément, le mécanisme de manoeuvre 30 est fixé en pointe par rapport à la voie sur le côté de la voie 12 au voisinage des pointes 22A, 24A des lames d'aiguille. Ce mécanisme de manoeuvre est formé par exemple d'un actionneur électromécanique.More specifically, the
La tringlerie 32 comporte une succession de tringles longitudinales 34 reliées en série les unes aux autres par des dispositifs de manoeuvre 36 interposés entre deux tringles longitudinales 34. Le mécanisme de manoeuvre 30 est relié à une extrémité de la tringlerie 32.The
Les dispositifs de manoeuvre 36 sont répartis suivant la longueur des lames d'aiguille en étant séparés les uns des autres par exemple d'une distance de 2 m à 7 m. Une ou plusieurs tringles successives 34 relie deux dispositifs de manoeuvre successifs. Eventuellement, un inverseur 38 est disposé entre deux dispositifs de manoeuvre successifs.The operating
Les tiges de commande transversales 33 sont reliées chacune sur une sortie d'un dispositif de manoeuvre 36.The
Un dispositif de manoeuvre 36 selon l'invention est représenté à plus grande échelle sur les
Il comporte essentiellement un socle 40, un levier de commande 42 intégré dans la tringlerie 32 entre deux tringles successives et un organe de renvoi mobile 44 formé d'un levier articulé par rapport au socle 40.It comprises essentially a base 40, a
Plus précisément, le socle 40 comporte une platine 46 permettant la fixation du dispositif de manoeuvre au sol, par exemple à l'extrémité d'une traverse de l'aiguillage, ainsi qu'un boîtier 48 à l'intérieur duquel le levier de commande 42 et le levier de renvoi 44 sont partiellement disposés.More specifically, the
Le levier de commande 42 est articulé autour d'un axe Y-Y parallèle à l'axe d'articulation du levier de renvoi 44 noté X-X. Il comporte deux bras disposés parallèlement l'un à l'autre, l'un au-dessus de l'autre et s'étendant d'un même côté de l'axe Y-Y.The
L'un des bras 49 formant un bras de liaison à la tringlerie 32 s'étend en dehors du boîtier 48. A son extrémité libre 49A, deux tringles successives de la tringlerie 32 sont articulées autour d'un axe Y1-Y1.One of the
Le second bras noté 50 formant un bras d'accouplement est formé d'une plaque générale trapézoïdale évasée vers son extrémité libre 50A. Le bras d'accouplement 50 est plus court que le bras de liaison 49. Il s'étend dans le boîtier 48.The
Le levier de renvoi 44 est articulé par rapport au socle 40 autour de l'axe X-X généralement vertical s'étendant perpendiculairement au plan de la tringlerie 32. Il comporte un bras d'attaque 54 faisant saillie hors du boîtier 48 au travers d'une fente latérale. A l'extrémité en saillie notée 56 du bras 54 est connectée une tige de commande transversale 33 par l'intermédiaire d'une liaison élastique.The
Le levier de renvoi 44 comporte en outre un bras de commande 58 solidaire du bras d'attaque 54. Le bras de commande 58 est mobile à l'intérieur du boîtier 48. Le levier de renvoi 44 présente, à son extrémité libre, une forme générale de fourche délimitée par deux dents d'extrémité 60A, 60B espacées l'une de l'autre et faisant saillie vers le levier de commande 42.The
Les dents 60A, 60B présentent, suivant leurs surfaces généralement en regard, des surfaces de cames 62A, 62B divergeant l'une de l'autre à l'écart de l'axe X-X. Ces surfaces de cames 62A, 62B sont propres à coopérer avec des contre-cames associées 64A, 64B portées par le bras d'accouplement 50 du levier de commande.The
Dans l'exemple considéré, les contre-cames 64A, 64B sont formées par des galets rotatifs portés par l'extrémité libre du bras d'accouplement 50. Ces galets sont articulés autour d'axes parallèles s'étendant parallèlement à aux axes X-X et Y-Y. Les galets sont décalés angulairement par rapport à l'axe Y-Y et sont équidistants de celui-ci.In the example considered, the counter-cams 64A, 64B are formed by rotary rollers carried by the free end of the
Les surfaces de cames 62A, 62B sont interrompues à l'extrémité des dents 60A, 60B pour permettre un dégagement des contre-cames 64A, 64B. Les extrémités libres des dents forment des surfaces de butée généralement concaves cylindriques 66A, 66B qui sont généralement et respectivement concentriques au déplacement décrit par le diamètre extérieur des deux galets 64A, 64B du levier de renvoi 44, en étant en appui ou au moins en regard de l'une ou l'autre des contre-cames 64A, 64B.The cam surfaces 62A, 62B are interrupted at the end of the
Enfin, un contact 70 est solidarisé au socle 40. Il est équipé d'un doigt palpeur mobile 72. Ce contact est propre à indiquer la position du dispositif de manoeuvre. Il est par exemple fermé lorsque le doigt palpeur 72 est sorti sous l'action d'un ressort propre au contact et ouvert lorsque le doigt palpeur est enfoncé.Finally, a
Le levier de commande 42 et notamment de préférence le bras d'accouplement 50 présentent une came 73 en arc de cercle présentant deux extrémités 74A, 74B. Elle est propre à enfoncer le doigt palpeur lorsqu'elle est parcourue suivant sa longueur et à libérer celui-ci lorsqu'il atteint ses extrémités 74A, 74B.The
L'installation fonctionne de la manière suivante.The installation works as follows.
On suppose qu'initialement l'aiguillage est dans une position telle que la lame d'aiguille 22 soit appliquée contre le rail fixe 18, alors que la lame d'aiguille 24 est écartée du rail fixe 20. Dans cette position, le mécanisme de manoeuvre 30 est dans une première position et impose ainsi une première position aux tringles 34. Les dispositifs de manoeuvre 36 sont dans la position illustrée sur la
Dans cette position, le levier de commande 42 est dans une première position alors que le bras d'attaque 54 est dans une première position extrême. Comme illustré sur la
Dans cette position de l'aiguillage, en cas de variation de température, les tringles 34 ont leur longueur modifiée, ce qui conduit à un léger déplacement en rotation du levier de commande 42 entraîné par les tringles. Le galet 64A se déplace alors légèrement autour de l'axe Y-Y. Toutefois, celui-ci reste en permanence en regard de la surface de butée 66A, assurant toujours une immobilisation du levier de renvoi 44, sans toutefois déplacer celui-ci puisque le galet 64A n'est pas en prise avec la surface de came 62B. Ainsi, on conçoit que, même en cas de variation de température, les lames d'aiguille restent immobiles et correctement positionnées.In this position of the switch, in case of temperature variation, the
Pour modifier la position de l'aiguillage, le levier de commande 42 est entraîné sous l'action des tringles 34 commandées par le mécanisme de manoeuvre 30, comme illustré par la flèche F sur la
Lors du déplacement ultérieur du levier de commande 42 suivant le sens de la flèche F et, comme illustré sur la
Le galet circule suivant la surface de came 62B jusqu'à son extrémité libre où il se dégage alors de la surface de came 62B, celle-ci étant interrompue.The roller moves along the
Comme illustré sur la
Lors du déplacement du galet de sa position illustrée sur la
Dans la position de la
On conçoit que, dans cette position également, en cas de dilatation des tringles de commande 34, le galet 64 est déplacé légèrement suivant la longueur de la surface 62B, sans provoquer le déplacement du levier de renvoi 44, et en garantissant toujours l'immobilisation de celui-ci.It is understood that, in this position also, in case of expansion of the
Ainsi, lors du déplacement du levier de commande 42 de sa première position vers sa seconde position suivant une course de déplacement, le levier de renvoi 44 n'est déplacé que dans la partie médiane de la course de déplacement, alors que le levier de renvoi 44 n'est pas déplacé lorsque le levier de commande se déplace sur des parties extrêmes de la course de déplacement situées de la première position ou de la seconde position à la partie médiane de la course. Ainsi, le positionnement du levier de renvoi 44 ne dépend pas des première et seconde positions du levier de commande 42, lesquelles varient avec la longueur des tringles 34, du fait de la dilatation.Thus, when the
Dans le mode de réalisation envisagé, deux galets sont mis en oeuvre pour former des contre-cames propres à coopérer avec les surfaces de cames 62A, 62B, ce qui est préférable. Toutefois, un même organe pourrait être utilisé pour coopérer avec les deux surfaces 62A, 62B.In the embodiment envisaged, two rollers are used to form counter-cams adapted to cooperate with the cam surfaces 62A, 62B, which is preferable. However, the same member could be used to cooperate with both
En variante, les surfaces de came 62A, 62B sont ménagées sur le levier 42 et la contre-came est ménagée sur le bras 58 du levier de renvoi mobile.Alternatively, the cam surfaces 62A, 62B are provided on the
On conçoit qu'avec une telle installation et quelle que soit la longueur des tringles du fait des conditions atmosphériques, les lames d'aiguille sont correctement positionnées par rapport aux rails fixes et ces lames sont immobilisées du fait des butées formées par les galets appliqués contre les surfaces de butée 66A ou 66B du levier de renvoi.It is conceivable that with such an installation and whatever the length of the rods due to atmospheric conditions, the needle blades are correctly positioned relative to the fixed rails and these blades are immobilized because of the stops formed by the rollers applied against the abutment surfaces 66A or 66B of the return lever.
La présence d'un levier de commande rotatif permet d'augmenter la force appliquée par les tringles sur le levier de renvoi 44 grâce au bras de levier 49 assurant la liaison à la tringlerie.The presence of a rotary control lever increases the force applied by the rods on the
Par ailleurs, le dispositif avec un levier de commande rotatif est peu sensible à la présence de glace ou de neige, puisque les surfaces en contact des pièces mobiles les unes par rapport aux autres sont réduites.Furthermore, the device with a rotary control lever is insensitive to the presence of ice or snow, since the contacting surfaces of the moving parts relative to each other are reduced.
Claims (10)
- Driving device (36) for mobile points blades (22, 24) for railway points comprising:• a base (40);• a control member (42) movably mounted in relation to the base (40) between a first position and a second position along a displacement path and suitable for connection to an actuator (30, 34);• a reversing lever (44) articulated in relation to the base (40); and• means for coupling the movement of the control member (42) and the reversing lever (44) to displace the reversing lever (44) by the action of the movement of the control member (42) from its first position to its second position, said coupling means being adjusted so that during the displacement of the control member (42) on at least one median portion of said displacement path, the reversing lever (44) is driven by the control member (42) between a first extreme position and a second extreme position, and during the displacement of the control member (42) on at least one extreme portion other than zero of the displacement path contained between the median portion of said displacement path and the first or second position, the reversing lever (44) is not driven by the control member (42),characterised in that the control member comprises a control lever (42), which is articulated in relation to the base (40) and having an arm (49) for connecting to an actuator (30, 34) to drive it, wherein said control lever (42) is suitable for cooperating with the reversing lever (44) to drive the reversing lever (44) by the action of the actuator on said at least one median portion of the displacement path of the control lever (42).
- Device according to claim 1, characterised in that the control lever (42) is such that the points of action of the actuator on the control lever (42) and of the control lever (42) on the reversing lever (44) are disposed on the same side of the articulation axis of the control lever (42) in relation to the base (40).
- Device according to claim 1 or 2, characterised in that the control lever (42) and the reversing lever (44) comprise complementary stops to immobilise the reversing lever (44) in at least one extreme position.
- Device according to any one of the preceding claims, characterised in that the reversing lever (44) comprises at least one cam surface (62A, 62B) and the control lever (42) comprises at least one cam follower (64A, 64B) suitable for assuring the displacement of the reversing member (44) towards an extreme position during the displacement of the control lever (42) over the median portion of the displacement path, and the or each cam surface (62A, 62B) comprises a break to assure a release of the or each cam follower (64A, 64B) away from the or each cam (62A, 62B) during the displacement of the control lever (42) over the extreme portion other than zero of the displacement path.
- Device according to claims 3 and 4 taken together, characterised in that the or each cam follower (64A, 64B) forms a stop to immobilise the reversing lever (44) when the reversing lever (44) is in an extreme position and the control lever (42) is on an extreme portion other than zero of the displacement path.
- Device according to claim 4 or 5, characterised in that the reversing lever (44) has a fork delimited by two teeth (60A, 60B), on the opposing faces of which two diverging cam surfaces (62A, 62B) are arranged.
- Device according to any one of claims 4 to 6, characterised in that the or each cam follower comprises a rotating roller (64A, 64B).
- Device according to any one of claims 4 to 7, characterised in that the control lever (42) comprises two cam followers (64A, 64B), which are offset at an angle around the axis of rotation of the control lever (42) in relation to the base (40).
- Device according to any one of claims 4 to 8, characterised in that the distance separating the articulation axis of the control lever (42) in relation to the base (40) from the connection point of the control lever (42) to the actuator (30, 34) is greater than the distance separating the articulation axis of the control lever (42) in relation to the base (40) from the or each cam follower (64A, 64B) suitable for cooperating with the reversing lever (44).
- Railway points comprising at least one mobile points blade (22, 24) and a driving mechanism (30) for the or each points blade, characterised in that it comprises a driving device (36) according to any one of the preceding claims interposed between the driving mechanism (30) and the or each points blade (22, 24).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0511874A FR2893576B1 (en) | 2005-11-23 | 2005-11-23 | DEVICE FOR MANEUVERING ROLAR BLADES |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1790548A1 EP1790548A1 (en) | 2007-05-30 |
EP1790548B1 true EP1790548B1 (en) | 2008-03-12 |
Family
ID=37101347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06291797A Not-in-force EP1790548B1 (en) | 2005-11-23 | 2006-11-21 | Driving device for railway switch blades |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1790548B1 (en) |
AT (1) | ATE388877T1 (en) |
DE (1) | DE602006000701T2 (en) |
ES (1) | ES2302310T3 (en) |
FR (1) | FR2893576B1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9242661B2 (en) | 2013-05-24 | 2016-01-26 | Spx International Limited | Railway point crank system |
GB2514420B (en) * | 2013-05-24 | 2017-02-08 | Spx Int Ltd | Railway point crank system |
DE202015104064U1 (en) * | 2015-08-04 | 2016-11-07 | Hanning & Kahl Gmbh & Co. Kg | Spring mechanism for fallback switches |
CN116575273B (en) * | 2023-07-14 | 2023-09-22 | 太原矿机电气股份有限公司 | Modular ground rail clamping rail and turnout |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL6901277A (en) * | 1969-01-24 | 1970-07-28 | ||
FR2338832A1 (en) * | 1976-01-23 | 1977-08-19 | Jeumont Schneider | Railway marshalling yard points system - has rectilinear cams with facing profiles and ends connected to changing blades and springs |
AT391500B (en) * | 1987-11-05 | 1990-10-10 | Voest Alpine Ag | CONVERSION DEVICE FOR MOVING PARTS OF A RAIL SWITCH |
GB2405659B (en) * | 2003-09-04 | 2006-07-26 | Westinghouse Brake & Signal | Point drive system |
FR2869861B1 (en) * | 2004-05-04 | 2006-07-14 | Alstom Transport Sa | DEVICE FOR MANEUVERING ROLLING BLADES FOR RAILWAY |
-
2005
- 2005-11-23 FR FR0511874A patent/FR2893576B1/en not_active Expired - Fee Related
-
2006
- 2006-11-21 ES ES06291797T patent/ES2302310T3/en active Active
- 2006-11-21 AT AT06291797T patent/ATE388877T1/en active
- 2006-11-21 EP EP06291797A patent/EP1790548B1/en not_active Not-in-force
- 2006-11-21 DE DE602006000701T patent/DE602006000701T2/en active Active
Also Published As
Publication number | Publication date |
---|---|
ES2302310T3 (en) | 2008-07-01 |
DE602006000701T2 (en) | 2008-07-24 |
EP1790548A1 (en) | 2007-05-30 |
FR2893576B1 (en) | 2008-02-15 |
ATE388877T1 (en) | 2008-03-15 |
FR2893576A1 (en) | 2007-05-25 |
DE602006000701D1 (en) | 2008-04-24 |
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