EP0618125A1 - Pivoting footstep for a door of a railway vehicle - Google Patents

Pivoting footstep for a door of a railway vehicle Download PDF

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Publication number
EP0618125A1
EP0618125A1 EP94400475A EP94400475A EP0618125A1 EP 0618125 A1 EP0618125 A1 EP 0618125A1 EP 94400475 A EP94400475 A EP 94400475A EP 94400475 A EP94400475 A EP 94400475A EP 0618125 A1 EP0618125 A1 EP 0618125A1
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EP
European Patent Office
Prior art keywords
shaft
pivoting
step according
motor device
nut
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Granted
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EP94400475A
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German (de)
French (fr)
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EP0618125B1 (en
Inventor
Francis Ancelet
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ANF Industrie
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ANF Industrie
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D23/00—Construction of steps for railway vehicles
    • B61D23/02—Folding steps for railway vehicles, e.g. hand or mechanically actuated

Definitions

  • the invention relates to a mobile step for a rail vehicle door, comprising a pivoting step with at least two positions, namely a raised position retracted with respect to the template and a horizontal position of use.
  • the known steps are of a complex construction: the step pivots on an axis which is itself mobile, and above all a linkage system is used to maneuver the step.
  • These assemblies are fragile and take up a lot of space so that one is obliged to house part of them between the two side sills. As a result, access for maintenance and possible repairs is made difficult.
  • these systems because of their complexity, are sensitive to the external environment (snow, ice, dust, etc.)
  • the invention aims to provide another mobile step system, which is robust and compact, so that it can be housed entirely outside the side rails of the rocker panel.
  • the step is integral with a shaft pivoting on bearings around a fixed axis, disposed parallel to and close to the side sill, said shaft extending longitudinally by a portion of screws meshing with a nut locked in rotation and sliding longitudinally, the nut receiving its longitudinal movement in the direction leading to the 'lowering (by rotation about the axis) of the step of a first motor device arranged longitudinally, and in the opposite direction of a second motor device also arranged longitudinally, the two motor devices being housed in a low housing thickness disposed on the outer face of the spar below and in the vicinity of the step.
  • the first motor device consists of at least one pneumatic cylinder, and preferably of two cylinders for safety reasons.
  • the second motor device can also consist of at least one pneumatic cylinder, but it preferably consists of a mechanical return device, and in particular of a compression spring device, preferably comprising at least two springs in parallel .
  • the first and second motor devices can be constituted by the same double-acting pneumatic cylinder.
  • the screw part is formed by helical grooves with a small inclination angle, which makes it possible to obtain the necessary torque while having a diameter and therefore a very small overall size.
  • the grooves are preferably of square section and the angle of inclination is close to 10 °.
  • the operating mechanism according to the invention can be easily mounted on the rails of a railway box, is easy to access from the outside, offers a small footprint, is compact and can be enclosed in a sealed casing making it protected from dirt and projections to which its position exposes it.
  • the steps 5 according to the invention include movable step 6 proper, in the vertical position retracted in Figure 1, and its casing 7 housing the operating mechanism.
  • the casing 7 extends under the step 6 and projects laterally. It is fully pressed against the beam 2.
  • the mobile step 6 includes a step nose 8, made of a suitable profiled material, for example aluminum, secured by frangible assembly means 9, to a pivoting part 10 advantageously molded.
  • This comprises, at its ends, a sleeve 11 surrounding a shaft 12 (or half-shaft) on which it is locked in rotation by a key 13.
  • An intermediate sleeve 11 '(cf. FIG. 1) is also provided.
  • One end of the shaft 12 is received in rotation about a parallel fixed axis of the spar and close to it, in a bearing 14 housed under the step and produced in a molded casing 27 fixed to the spar 2, while the outer end of the shaft 12 is provided on a cardboard portion 15 of its length with helical grooves, this portion forming a screw being received in rotation in a nut 16 slidably mounted on a smooth guide shaft 17 parallel to the drive shaft 12, and located above it.
  • the nut 16 has a thread complementary to that of the screw 15.
  • the guide shaft 17 is fixed at its ends to the housing 27.
  • the shaft 12 is extended beyond its screw portion 15 by a nozzle 18 carrying cams 19 coming, during the rotation of the shaft, engaging and triggering pneumatic contacts 20, opening and closing compressed air passages intended to the actuator cylinders.
  • the nut 16 is biased in movement, at its lower part, on one side by the heads 21 of the rods of two pneumatic cylinders 22 arranged laterally and superimposed and on the other side, by two superimposed parallel compression springs 23,24 .
  • Each spring 23, 24 is possibly composed of several springs, in series, for example a spring 23 guided by an internal rod 25 linked to the nut 16, and a spring 24 guided in a bore 26 of the mechanism housing 27.
  • the two mechanism housings 27, at the end of the steps, are for example made in foundry, and connected by a connecting beam 28 made of mechanically welded steel.
  • the connecting beam 28 comprises in its middle a bearing 29 receiving a pivot shaft intended for the intermediate sleeve 11 '.
  • the assembly is covered with a casing 7, possibly in several parts.
  • the step 6 is normally in its retracted retracted position, the mechanism being in the position shown in FIG. 2: the nut 16 is pushed completely outwards by the springs 23, 24, the force of which is sufficient to oppose the descent of the step by gravity.
  • FIG. 4 shows in dotted lines intermediate positions of the step, and in solid lines, the final horizontal position of the step.
  • the single-acting cylinders 22 can be replaced by double-acting cylinders whose rod head is hooked to the nut 16, and the springs 23, 24 can be eliminated.
  • the movement of the step is then determined in one direction and in the other by the push and the traction of the jacks.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Body Structure For Vehicles (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Transmission Devices (AREA)
  • Seats For Vehicles (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)

Abstract

The pivoting footstep is integral with a shaft (12) for pivoting on a fixed spindle, located parallel to the body bottom longeron and close to the latter; the shaft (12) is extended by a screw (15) engaging with a sliding nut (16) which is immobilised in terms of rotation and pushed in one direction by thrusters (12) and in the other by springs (23,24), the two driving devices (22;23,24) being housed in a casing (27) of slight thickness located on the outer face of the longeron beneath and in the vicinity of the footstep. <IMAGE>

Description

L'invention concerne un emmarchement mobile pour porte de véhicule ferroviaire, comprenant une marche pivotante à au moins deux positions, à savoir une position relevée effacée en retrait par rapport au gabarit et une position horizontale d'utilisation.The invention relates to a mobile step for a rail vehicle door, comprising a pivoting step with at least two positions, namely a raised position retracted with respect to the template and a horizontal position of use.

Le principe d'un tel emmarchement est connu, par exemple par les documents FR-A-2632592 et FR-A-2633576. On sait que ces marches escamotables sont nécessaires pour tenir compte des différentes hauteurs de quais d'un réseau ferroviaire.The principle of such a step is known, for example from the documents FR-A-2632592 and FR-A-2633576. We know that these retractable steps are necessary to take into account the different platform heights of a rail network.

Cependant les emmarchements connus sont d'une construction complexe : la marche pivote sur un axe lui-même mobile, et surtout un système de tringlerie sert à manoeuvrer la marche. Ces ensembles sont fragiles et prennent beaucoup de place de sorte qu'on est obligé d'en loger une partie entre les deux longerons de bas de caisse. De ce fait, l'accès pour l'entretien et les réparations éventuelles est rendu difficile. De plus, ces systèmes, du fait de leur complexité, sont sensibles à l'environnement extérieur (neige, glace, poussières, etc.)However, the known steps are of a complex construction: the step pivots on an axis which is itself mobile, and above all a linkage system is used to maneuver the step. These assemblies are fragile and take up a lot of space so that one is obliged to house part of them between the two side sills. As a result, access for maintenance and possible repairs is made difficult. In addition, these systems, because of their complexity, are sensitive to the external environment (snow, ice, dust, etc.)

L'invention a pour but de proposer un autre système d'emmarchement mobile, qui soit robuste et d'un faible encombrement, de manière à pouvoir le loger entièrement à l'extérieur des longerons du bas de caisse.The invention aims to provide another mobile step system, which is robust and compact, so that it can be housed entirely outside the side rails of the rocker panel.

Selon l'invention la marche est solidaire d'un arbre pivotant sur des paliers autour d'un axe fixe, disposé parallèlement au longeron de bas de caisse et à proximité de celui-ci, ledit arbre se prolongeant longitudinalement par une partie de vis engrenant avec un écrou bloqué en rotation et coulissant longitudinalement, l'écrou recevant son mouvement longitudinal dans le sens conduisant à l'abaissement (par rotation autour de l'axe) de la marche d'un premier dispositif moteur disposé longitudinalement, et dans l'autre sens d'un second dispositif moteur également disposé longitudinalement, les deux dispositifs moteurs étant logés dans un boîtier de faible épaisseur disposé sur la face extérieure du longeron en dessous et au voisinage de l'emmarchement.According to the invention, the step is integral with a shaft pivoting on bearings around a fixed axis, disposed parallel to and close to the side sill, said shaft extending longitudinally by a portion of screws meshing with a nut locked in rotation and sliding longitudinally, the nut receiving its longitudinal movement in the direction leading to the 'lowering (by rotation about the axis) of the step of a first motor device arranged longitudinally, and in the opposite direction of a second motor device also arranged longitudinally, the two motor devices being housed in a low housing thickness disposed on the outer face of the spar below and in the vicinity of the step.

Il va de soi qu'au lieu d'un seul arbre moteur, on peut prévoir plusieurs arbres ou demi-arbres, et notamment deux demi-arbres situés aux extrémités de la marche.It goes without saying that instead of a single drive shaft, it is possible to provide several trees or half-trees, and in particular two half-trees situated at the ends of the step.

Avantageusement le premier dispositif moteur est constitué d'au moins un vérin pneumatique, et de préférence de deux vérins pour des raisons de sécurité.Advantageously, the first motor device consists of at least one pneumatic cylinder, and preferably of two cylinders for safety reasons.

Le second dispositif moteur peut aussi être constitué d'au moins un vérin pneumatique, mais il est de préférence constitué d'un dispositif de rappel mécanique, et notamment d'un dispositif à ressort de compression, comprenant de préférence au moins deux ressorts en parallèle.The second motor device can also consist of at least one pneumatic cylinder, but it preferably consists of a mechanical return device, and in particular of a compression spring device, preferably comprising at least two springs in parallel .

Alternativement, le premier et le second dispositifs moteurs peuvent être constitués par un même vérin pneumatique double effet.Alternatively, the first and second motor devices can be constituted by the same double-acting pneumatic cylinder.

Sur l'arbre moteur, la partie de vis est constituée par des cannelures hélicoïdales à faible angle d'inclinaison, ce qui permet d'obtenir le couple nécessaire tout en ayant un diamètre et donc un encombrement total, très faible. Les cannelures sont de préférence à section carrée et l'angle d'inclinaison est voisin de 10°.On the motor shaft, the screw part is formed by helical grooves with a small inclination angle, which makes it possible to obtain the necessary torque while having a diameter and therefore a very small overall size. The grooves are preferably of square section and the angle of inclination is close to 10 °.

Le mécanisme de manoeuvre conforme à l'invention peut se monter facilement sur les longerons d'une caisse ferroviaire, est facile d'accès depuis l'extérieur, offre un encombrement réduit, est compact et peut être enfermé dans un carter étanche le mettant à l'abri des salissures et projections auxquelles sa position l'expose.The operating mechanism according to the invention can be easily mounted on the rails of a railway box, is easy to access from the outside, offers a small footprint, is compact and can be enclosed in a sealed casing making it protected from dirt and projections to which its position exposes it.

D'autres caractéristiques et avantages de l'invention ressortiront de la description suivante d'un mode préféré de réalisation de l'invention. Il sera fait référence aux dessins annexés sur lesquels :

  • . La figure 1 est une vue de face d'une voiture ferroviaire, montrant l'emmarchement de deux portes en position escamotée.
  • . La figure 2 est une vue en coupe partielle de face au niveau de l'emmarchement montrant le mécanisme d'entraînement de la marche mobile, celle-ci étant représentée en position escamotée et au voisinage d'une de ses extrémités seulement.
  • . Les figures 3 à 7 sont des coupes respectives de la figure 2 au niveau des lignes III-III à VII-VII, la marche étant représentée en position d'ouverture complète ou partielle pour plus de clarté.
Other characteristics and advantages of the invention will emerge from the following description of a preferred embodiment of the invention. Reference will be made to the appended drawings in which:
  • . Figure 1 is a front view of a rail car, showing the step of two doors in the retracted position.
  • . Figure 2 is a partial sectional front view at the step showing the drive mechanism of the movable step, the latter being shown in the retracted position and in the vicinity of one of its ends only.
  • . Figures 3 to 7 are respective sections of Figure 2 at the lines III-III to VII-VII, the step being shown in the full or partial open position for clarity.

On voit sur la figure 1 une extrémité de voiture ferroviaire 1, dont la caisse est supportée par des longerons 2 reposant eux-mêmes par des traverses sur des bogies 3. Au niveau des portes 4, les emmarchements 5 conformes à l'invention comprennent la marche mobile 6 proprement dite, en position verticale escamotée sur la figure 1, et son carter 7 abritant le mécanisme de manoeuvre. Le carter 7 s'étend sous la marche 6 et déborde latéralement. Il est entièrement plaqué contre le longeron 2.We see in Figure 1 one end of a rail car 1, the body of which is supported by side members 2 themselves resting on cross members on bogies 3. At doors 4, the steps 5 according to the invention include movable step 6 proper, in the vertical position retracted in Figure 1, and its casing 7 housing the operating mechanism. The casing 7 extends under the step 6 and projects laterally. It is fully pressed against the beam 2.

La marche mobile 6 comprend un nez de marche 8, réalisé dans un matériau profilé convenable, par exemple en aluminium, solidarisé grâce à des moyens d'assemblage frangibles 9, à une partie pivotante 10 avantageusement moulée. Celle-ci comporte, à ses extrémités, un manchon 11 entourant un arbre 12 (ou demi-arbre) sur lequel il est bloqué en rotation par une clavette 13. Un manchon intermédiaire 11' (cf. figure 1) est également prévu.The mobile step 6 includes a step nose 8, made of a suitable profiled material, for example aluminum, secured by frangible assembly means 9, to a pivoting part 10 advantageously molded. This comprises, at its ends, a sleeve 11 surrounding a shaft 12 (or half-shaft) on which it is locked in rotation by a key 13. An intermediate sleeve 11 '(cf. FIG. 1) is also provided.

Une extrémité de l'arbre 12 est reçue en rotation autour d'un axe fixe parallèle du longeron et à proximité de lui, dans un palier 14 logé sous la marche et réalisé dans un boîtier moulé 27 fixé au longeron 2, tandis que l'extrémité extérieure de l'arbre 12 est pourvue sur une cartaine portion 15 de sa longueur de cannelures hélicoïdales, cette portion formant vis étant reçue en rotation dans un écrou 16 monté coulissant sur un arbre lisse de guidage 17 parallèle à l'arbre d'entraînement 12, et situé au dessus de lui. L'écrou 16 comporte un filetage complémentaire de celui de la vis 15. L'arbre 17 de guidage est fixé à ses extrémités au boîtier 27.One end of the shaft 12 is received in rotation about a parallel fixed axis of the spar and close to it, in a bearing 14 housed under the step and produced in a molded casing 27 fixed to the spar 2, while the outer end of the shaft 12 is provided on a cardboard portion 15 of its length with helical grooves, this portion forming a screw being received in rotation in a nut 16 slidably mounted on a smooth guide shaft 17 parallel to the drive shaft 12, and located above it. The nut 16 has a thread complementary to that of the screw 15. The guide shaft 17 is fixed at its ends to the housing 27.

L'arbre 12 se prolonge au delà de sa partie de vis 15 par un embout 18 portant des cames 19 venant, pendant la rotation de l'arbre, enclencher et déclencher des contacts pneumatiques 20, ouvrant et fermant des passages d'air comprimé destinés aux vérins du mécanisme de manoeuvre.The shaft 12 is extended beyond its screw portion 15 by a nozzle 18 carrying cams 19 coming, during the rotation of the shaft, engaging and triggering pneumatic contacts 20, opening and closing compressed air passages intended to the actuator cylinders.

L'écrou 16 est sollicité en mouvement, à sa partie inférieure, d'un côté par les têtes 21 des tiges de deux vérins pneumatiques 22 disposés latéralement et superposés et de l'autre côté, par deux ressorts de compression parallèles superposés 23,24. Chaque ressort 23,24 est éventuellement composé de plusieurs ressorts, en série, par exemple d'un ressort 23 guidé par une tige intérieure 25 liée à l'écrou 16, et d'un ressort 24 guidé dans un alésage 26 du boîtier de mécanisme 27.The nut 16 is biased in movement, at its lower part, on one side by the heads 21 of the rods of two pneumatic cylinders 22 arranged laterally and superimposed and on the other side, by two superimposed parallel compression springs 23,24 . Each spring 23, 24 is possibly composed of several springs, in series, for example a spring 23 guided by an internal rod 25 linked to the nut 16, and a spring 24 guided in a bore 26 of the mechanism housing 27.

Les deux boîtiers de mécanisme 27, à l'extrémité des marches, sont par exemple réalisés en fonderie, et reliés par une poutre de liaison 28 réalisée en acier mécano-soudé. La poutre de liaison 28 comporte en son milieu un palier 29 recevant un arbre de pivotement destiné au manchon intermédiaire 11'.The two mechanism housings 27, at the end of the steps, are for example made in foundry, and connected by a connecting beam 28 made of mechanically welded steel. The connecting beam 28 comprises in its middle a bearing 29 receiving a pivot shaft intended for the intermediate sleeve 11 '.

L'ensemble est recouvert d'un carter 7, éventuellement en plusieurs parties.The assembly is covered with a casing 7, possibly in several parts.

Comme le montrent bien les figures 3 à 7, l'ensemble du mécanisme de manoeuvre occupe très peu d'espace : son épaisseur est juste celle qui est nécessaire au diamètre des arbres, ressorts, vérins, etc. superposés, à savoir environ 5 cm.As Figures 3 to 7 clearly show, the entire operating mechanism occupies very little space: its thickness is just that which is necessary for the diameter of the shafts, springs, jacks, etc. superimposed, i.e. about 5 cm.

Le fonctionnement du dispositif de l'invention est le suivant.The operation of the device of the invention is as follows.

La marche 6 est normalement dans sa position relevée escamotée, le mécanisme étant dans la position représentée en figure 2 : l'écrou 16 est repoussé complètement vers l'extérieur par les ressorts 23,24 dont la force est suffisante pour s'opposer à la descente de la marche par gravité.The step 6 is normally in its retracted retracted position, the mechanism being in the position shown in FIG. 2: the nut 16 is pushed completely outwards by the springs 23, 24, the force of which is sufficient to oppose the descent of the step by gravity.

Lorsqu'il convient de descendre la marche, les vérins 22 sont actionnés, leurs tiges sortent et poussent l'écrou 16 vers la marche (vers la gauche sur la figure 2) ; dans sa translation forcée à gauche, l'écrou 16 est bloqué en rotation par l'arbre lisse 17 : il contraint la vis 15 de l'arbre 12 à tourner dans l'écrou 16 ; cette rotation de la vis 15, c'est-à-dire de l'arbre 12, entraîne celle de la partie pivotante 10 et donc du nez de marche 8. La figure 4 montre en pointillés des positions intermédiaires de la marche, et en traits pleins, la position finale horizontale de la marche.When it is appropriate to descend the step, the jacks 22 are actuated, their rods come out and push the nut 16 towards the step (to the left in FIG. 2); in its forced translation to the left, the nut 16 is locked in rotation by the smooth shaft 17: it forces the screw 15 of the shaft 12 to rotate in the nut 16; this rotation of the screw 15, that is to say of the shaft 12, causes that of the pivoting part 10 and therefore of the step nose 8. FIG. 4 shows in dotted lines intermediate positions of the step, and in solid lines, the final horizontal position of the step.

Pour escamoter à nouveau la marche, il suffit de couper l'alimentation en air comprimé des vérins simple effet 22. La force des ressorts 23,24 est alors suffisante pour repousser l'écrou 16 vers la droite à l'encontre de la résistance due au moment exercé par la marche sur l'arbre 12.To retract the walk again, just cut the compressed air supply to the single-acting cylinders 22. The force of the springs 23, 24 is then sufficient to push the nut 16 to the right against the resistance due to the moment exerted by walking on the shaft 12.

On notera qu'en cas de défaillance imprévue du circuit d'air comprimé, les ressorts de rappel 23,24 relèvent automatiquement la marche, assurant ainsi la sécurité de l'ensemble.It will be noted that in the event of an unforeseen failure of the compressed air circuit, the return springs 23, 24 automatically raise the step, thus ensuring the safety of the assembly.

Naturellement, on pourrait inverser la position des ressorts et celle des vérins, en modifiant le sens d'enroulement des cannelures de la vis 15.Naturally, the position of the springs and that of the jacks could be reversed, by modifying the winding direction of the grooves of the screw 15.

Selon une variante de réalisation, on peut remplacer les vérins simple effet 22 par des vérins double effet dont la tête de tige est accrochée à l'écrou 16, et supprimer les ressorts 23,24. Le mouvement de la marche est alors déterminé dans un sens et dans l'autre par la poussée et la traction des vérins.According to an alternative embodiment, the single-acting cylinders 22 can be replaced by double-acting cylinders whose rod head is hooked to the nut 16, and the springs 23, 24 can be eliminated. The movement of the step is then determined in one direction and in the other by the push and the traction of the jacks.

Pour ne pas perdre l'avantage de la sécurité de remontée automatique qu'offrent les ressorts, il est avantageux de prévoir que la remontée de la marche s'effectue grâce à une réserve d'air comprimé (accumulateur pneumatique) qui assure le relevage de la marche même en cas d'absence d'énergie.In order not to lose the advantage of the safety of automatic ascent offered by the springs, it is advantageous to provide that the ascent of the step takes place thanks to a reserve of compressed air (pneumatic accumulator) which ensures the lifting of walking even when there is no energy.

Claims (7)

Emmarchement mobile pour porte (4) de véhicule ferroviaire, comprenant une marche pivotante (6) à au moins deux positions, à savoir une position relevée effacée en retrait par rapport au gabarit et une position horizontale d'utilisation,
caractérisé en ce que la marche (6) est solidaire d'un arbre (12) pivotant sur un axe fixe, disposé parallèlement au longeron (2) de bas de caisse et à proximité de celui-ci, ledit arbre (12) se prolongeant longitudinalement par une partie de vis (15) engrenant avec un écrou (16) bloqué en rotation et coulissant longitudinalement, l'écrou (16) recevant son mouvement longitudinal dans le sens conduisant à l'abaissement de la marche d'un premier dispositif moteur (22) disposé longitudinalement, et dans l'autre sens d'un second dispositif moteur (23,24) également disposé longitudinalement, les deux dispositifs moteurs (22;23,24) étant logés dans un boîtier (27) de faible épaisseur disposé sur la face extérieure du longeron (2) en dessous et au voisinage de l'emmarchement.Movable step for door (4) of a railway vehicle, comprising a pivoting step (6) with at least two positions, namely a raised position erased back with respect to the template and a horizontal position of use,
characterized in that the step (6) is integral with a shaft (12) pivoting on a fixed axis, disposed parallel to and close to the side member (2) of the rocker panel, said shaft (12) extending longitudinally by a portion of screws (15) meshing with a nut (16) blocked in rotation and sliding longitudinally, the nut (16) receiving its longitudinal movement in the direction leading to the lowering of the step of a first motor device (22) arranged longitudinally, and in the other direction of a second motor device (23,24) also arranged longitudinally, the two motor devices (22; 23,24) being housed in a casing (27) of small thickness arranged on the outer face of the beam (2) below and in the vicinity of the step. Emmarchement selon la revendication 1, caractérisé en ce que le premier dispositif moteur (22) est constitué d'au moins un vérin pneumatique.Step according to claim 1, characterized in that the first motor device (22) consists of at least one pneumatic cylinder. Emmarchement selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le second dispositif moteur est constitué d'au moins un vérin pneumatique.Step according to any one of claims 1 or 2, characterized in that the second motor device consists of at least one pneumatic cylinder. Emmarchement selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le second dispositif moteur est constitué d'un dispositif de rappel mécanique (23,24).Step according to any one of claims 1 or 2, characterized in that the second motor device consists of a mechanical return device (23,24). Emmarchement selon la revendication 4, caractérisé en ce que le dispositif de rappel est un dispositif à ressort de compression (23,24).Step according to claim 4, characterized in that the return device is a compression spring device (23,24). Emmarchement selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le premier et le second dispositifs moteurs sont constitués par un même vérin pneumatique double effet.Step according to any one of claims 1 or 2, characterized in that the first and the second drive devices are constituted by the same double-acting pneumatic cylinder. Emmarchement selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la partie de vis (15) est constituée par des cannelures hélicoïdales à faible angle d'inclinaison.Step according to any one of Claims 1 to 6, characterized in that the screw part (15) consists of helical grooves with a small inclination angle.
EP94400475A 1993-03-29 1994-03-07 Pivoting footstep for a door of a railway vehicle Expired - Lifetime EP0618125B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9303594 1993-03-29
FR9303594A FR2703318B1 (en) 1993-03-29 1993-03-29 MOBILE STEPPING FOR RAIL VEHICLE DOORS.

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EP0618125A1 true EP0618125A1 (en) 1994-10-05
EP0618125B1 EP0618125B1 (en) 1996-06-19

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EP94400475A Expired - Lifetime EP0618125B1 (en) 1993-03-29 1994-03-07 Pivoting footstep for a door of a railway vehicle

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EP (1) EP0618125B1 (en)
AT (1) ATE139498T1 (en)
DE (1) DE69400251T2 (en)
ES (1) ES2091101T3 (en)
FR (1) FR2703318B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1627749A (en) * 1925-01-10 1927-05-10 Nat Pneumatic Co Manually-operable door and step
CH663765A4 (en) * 1965-05-12 1967-05-13
DE3320267A1 (en) * 1983-06-04 1984-12-06 Schultz, Rainer M., 2000 Hamburg Passenger vehicle, in particular buses such as long-distance coaches or the like
EP0345706A1 (en) * 1988-06-08 1989-12-13 Gec Alsthom Sa Access foot step with foldable treads for an access door of a railway vehicle for passenger transport
EP0348928A1 (en) * 1988-07-01 1990-01-03 Gec Alsthom Sa Footstep arrangement with retractable treads for the entrance and exit door of a rail vehicle for passenger tranport

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1627749A (en) * 1925-01-10 1927-05-10 Nat Pneumatic Co Manually-operable door and step
CH663765A4 (en) * 1965-05-12 1967-05-13
DE3320267A1 (en) * 1983-06-04 1984-12-06 Schultz, Rainer M., 2000 Hamburg Passenger vehicle, in particular buses such as long-distance coaches or the like
EP0345706A1 (en) * 1988-06-08 1989-12-13 Gec Alsthom Sa Access foot step with foldable treads for an access door of a railway vehicle for passenger transport
FR2632592A1 (en) * 1988-06-08 1989-12-15 Alsthom APPARATUS WITH RETRACTABLE MARKETS FOR A DOOR TO A RAILWAY VEHICLE FOR TRANSPORTING PASSENGERS
EP0348928A1 (en) * 1988-07-01 1990-01-03 Gec Alsthom Sa Footstep arrangement with retractable treads for the entrance and exit door of a rail vehicle for passenger tranport
FR2633576A1 (en) * 1988-07-01 1990-01-05 Alsthom APPARATUS WITH RETRACTABLE MARKETS FOR ACCESS AND EXIT PORTS OF A RAILWAY VEHICLE FOR TRANSPORTING PASSENGERS

Also Published As

Publication number Publication date
ATE139498T1 (en) 1996-07-15
FR2703318B1 (en) 1995-06-23
ES2091101T3 (en) 1996-10-16
DE69400251D1 (en) 1996-07-25
FR2703318A1 (en) 1994-10-07
DE69400251T2 (en) 1996-11-07
EP0618125B1 (en) 1996-06-19

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