EP3556634A1 - Railway vehicle and associated circulation method - Google Patents

Railway vehicle and associated circulation method Download PDF

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Publication number
EP3556634A1
EP3556634A1 EP19169267.2A EP19169267A EP3556634A1 EP 3556634 A1 EP3556634 A1 EP 3556634A1 EP 19169267 A EP19169267 A EP 19169267A EP 3556634 A1 EP3556634 A1 EP 3556634A1
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EP
European Patent Office
Prior art keywords
car
jack
cylinder
railway vehicle
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19169267.2A
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German (de)
French (fr)
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EP3556634B1 (en
Inventor
Jérémy Clavier
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Alstom Transport Technologies SAS
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Alstom Transport Technologies SAS
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Publication date
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Priority to PL19169267T priority Critical patent/PL3556634T3/en
Publication of EP3556634A1 publication Critical patent/EP3556634A1/en
Application granted granted Critical
Publication of EP3556634B1 publication Critical patent/EP3556634B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
    • B61F5/22—Guiding of the vehicle underframes with respect to the bogies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F1/00—Underframes
    • B61F1/08—Details
    • B61F1/14—Attaching or supporting vehicle body-structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
    • B61F5/04—Bolster supports or mountings
    • B61F5/06—Bolster supports or mountings incorporating metal springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
    • B61F5/22—Guiding of the vehicle underframes with respect to the bogies
    • B61F5/24—Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes
    • B61F5/245—Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes by active damping, i.e. with means to vary the damping characteristics in accordance with track or vehicle induced reactions, especially in high speed mode

Definitions

  • the present invention relates to a railway vehicle comprising at least one car and at least one bogie carrying the car, the bogie comprising a chassis and a secondary suspension system between the chassis and the car, the secondary suspension system comprising a set of springs mounted between the frame and the car, a cylinder comprising two ends extending along the same axis and a cylinder supply device.
  • the document US 2004/0016361 discloses a railway vehicle comprising a car, a bogie and a suspension system comprising a suspension spring and a cylinder in parallel extending between the car and the bogie.
  • the cylinder makes it possible to vary the distance between the bogie and the car, the height of the car thus being variable. This in particular reduces the vertical distance between the floor of the car and a dock.
  • the invention aims in particular to overcome these disadvantages by providing a railway vehicle comprising a leveling system undergoing limited transverse forces and not adding additional stiffness to the suspension system.
  • the invention particularly relates to a railway vehicle of the aforementioned type, wherein the cylinder is configured to move from a first so-called retracted configuration in which the cylinder is only connected to the car by the first end of the cylinder to a second so-called deployed configuration in which the jack is also connected to the frame by the second end of the jack, the feeder being configured, in the deployed configuration, to feed the jack to move the car away from the frame or to maintain constant distance between the car and the chassis.
  • the cylinder is thus able to bring and then maintain the car and the chassis at a constant distance, for example, chosen so that the height of the floor of the car to the stop in a station is substantially equal to the height of the platform of this station.
  • the second end of the cylinder is free, the cylinder thus not undergoing transverse forces due to relative movements between the car and the bogie and adding substantially no additional stiffness to the system secondary suspension.
  • vertical and horizontal generally refer to the usual directions of a rail vehicle traveling on horizontal rails.
  • a railway vehicle 10 stationary at a station is represented at the figure 1 .
  • the station comprises at least one platform 12, such that the railway vehicle 10 is stopped along the platform 12.
  • the railway vehicle 10 comprises at least one car 14, at least one bogie 16 carrying the car 14 and, advantageously, a link 17 disposed between the car 14 and the bogie 16.
  • the car 14 has an interior volume 18 configured to receive passengers and / or goods to be transported.
  • the interior volume 18 communicates with the outside by at least one door 20.
  • the interior volume 18 is defined in particular by a lower floor 22, on which the passengers and / or the goods evolve.
  • the bogie 16 extends for example to one end of the car 14 and supports two cars 14 adjacent when the railway vehicle 10 comprises several cars 14. According to a conventional embodiment, the or each car 14 is supported by two bogies 16 to each of its ends.
  • the bogie 16 comprises wheels 24 mounted to rotate on the bogie 16 by axles 26, a frame 28 and a secondary suspension system 30 disposed between the frame 28 and the car 14.
  • the wheels 24 are configured to roll on rails 32 and thus allow the rail vehicle 10 to move.
  • the bogie 16 comprises four secondary suspension systems 30, located at the four corners of the bogie 16, the bogie 16 having a substantially rectangular cross section.
  • the term "transverse" is defined generally with respect to a direction substantially orthogonal to the direction of travel of the railway vehicle 10.
  • the secondary suspension system 30 extends along a main axis X extending in a direction of elevation, for example substantially vertical when the rail vehicle 10 moves on horizontal rails 32.
  • the terms “lower” and “higher” are defined relative to the elevation direction.
  • the secondary suspension system 30 makes it possible to resume the movements in the direction of elevation between the car 14 and the bogie 16.
  • the secondary suspension system 30 makes it possible in particular to ensure both the suspension function between the car 14 and the car. bogie 16 and the positioning function according to the direction of elevation of the car 14 with respect to the station platform 12.
  • the secondary suspension system 30, shown in FIGS. Figures 2 and 3 comprises a set 34 of springs mounted between the frame 28 and the car 14, a jack 36 and a feed device 38 of the jack 36.
  • the spring assembly 34 comprises at least one internal spring 40 and an outer spring 42.
  • the inner spring 40 and the outer spring 42 are helical and coaxial springs, having the central axis X as the main axis.
  • the diameter of the inner spring 40 is smaller than the diameter of the outer spring 42, so that the inner spring 40 extends into the internal volume defined by the external spring 42.
  • the inner spring 40 and the outer spring 42 are wound around the jack 36.
  • the inner spring 40 and the outer spring 42 have, for example, opposite winding directions.
  • the assembly 34 of springs allows a relative displacement in the direction of elevation between the frame 28 and the car 14.
  • the jack 36 provides a positioning function of the car 14 with respect to the truck 16 in the direction of elevation.
  • the jack 36 extends along the main axis X.
  • the jack 36 comprises a first end 44 and a second end 46 substantially aligned along the main axis X.
  • the jack 36 further comprises a cylinder 48, a piston 50 separating the cylinder 48 into a high chamber 52 and a low chamber 54.
  • the jack 36 further comprises a blocking system 56 connected to the first end 44.
  • the first end 44 of the jack 36 is mechanically linked to the car 14.
  • the connection between the first end 44 and the car 14 is a ball 58 enabling the jack 36 to be rotatable in all directions. directions around the ball 58 relative to the car 14.
  • the second end 46 is configured to extend between a so-called free position in which the second end 46 is mechanically free, the jack 36 then being said in retracted configuration, and a so-called fixed position in which the second end 46 is in contact with the frame 28, the cylinder 36 is then said deployed configuration.
  • the jack 36 is only connected to the car 14 through the first end 44, as shown in FIG. figure 2 .
  • the jack 36 is connected to the car 14 through the first end 44 and to the frame 28 through the second end 46, as shown in FIG. figure 3 .
  • the second end 46 is then able to exert a pressure along the main axis X on the frame 28.
  • the first end 44 and the second end 46 are located outside the cylinder 48, the cylinder 48 being located between the first end 44 and the second end 46 along the main axis X.
  • the cylinder 48 extends along the main axis X between a lower portion 59 and an upper portion 60.
  • the piston 50 is movable in the cylinder 48 and comprises a head 61 and a rod 62 secured to the head 61.
  • the head 61 is able to slide in the cylinder 48 along the main axis X, between the lower part 59 and the upper part 60.
  • the head 61 separates the cylinder 48 into two chambers hermetically separated from one another, namely the upper chamber 52 and the lower chamber 54.
  • the rod 62 passes hermetically through the lower portion 59 of the cylinder 48 along the main axis X at a through orifice 64.
  • the rod 62 comprises the second end 46.
  • the second end 46 is located opposite the head 61 relative to the main axis X.
  • the jack 36 furthermore advantageously comprises at least one return spring 55.
  • the return spring 55 is inserted into the cylinder 48.
  • the return spring 55 is a helical spring whose central axis is the axis main X.
  • the return spring 55 is configured to constrain the ram 36 to the retracted configuration.
  • the return spring 55 is located in the lower chamber 54 and connects the head 61 to the lower portion 59 of the cylinder 48.
  • the return spring 55 constrains the head 61 to a position remote from the lower portion 59 of the cylinder 48.
  • rod 62 is advantageously inserted into the return spring 55, which limits the bulk of the jack 36.
  • the locking system 56 is located between the first end 44 and the cylinder 48, as illustrated in FIGS. Figures 4 and 5 .
  • the locking system 56 is configured to immobilize the jack 36 with respect to the car 14 when the jack 36 is in the retracted configuration, as shown in FIG. figure 4 .
  • the locking system 56 fixes the jack 36 relative to the car 14. This prevents the jack 36 from oscillating freely. around the ball 58 and come into contact with the assembly 34 of springs, which could lead to rapid degradation of the cylinder 36 and the assembly 34 of springs.
  • the locking system 56 is further configured to keep the cylinder 36 rotatable about the ball 58 when the cylinder 36 is in the deployed configuration, as shown in FIG. figure 5 .
  • the jack 36 being connected to the car 14 and to the frame 28, the jack 36 is likely to deviate from the direction of the main axis X because of the possible transverse relative movements between the car 14 and the car. bogie 16.
  • the cylinder 36 being rotatable about the ball 58, the cylinder 36 does not undergo transverse forces due to these relative movements between the car 14 and the bogie 16.
  • the jack 36 does not add additional stiffness to the secondary suspension system 30.
  • the locking system 56 comprises for example at least one wall 66, an upper cylinder 68, a protrusion 70 and at least one locking spring 72.
  • the wall 66 projects from the outside face of the floor of the car 14 towards the bogie 16.
  • the wall 66 converges substantially towards the main axis X.
  • the wall 66 defines a cavity 74 open along the main axis X at the lower end of the wall 66.
  • the ball 58 is located in the cavity 74.
  • the upper cylinder 68 projects from the upper part 60 of the cylinder 48 in the direction of the main axis X.
  • the diameter of the upper cylinder 68 is advantageously smaller than the diameter of the cylinder 68.
  • the upper cylinder 68 is partially inserted into the cavity 74.
  • the first end 44 is received in the upper cylinder 68.
  • the first end 44 is slidable in the upper cylinder 68 along the main axis X.
  • the first end 44 is connected to the cylinder 48 via the locking system 56.
  • the protuberance 70 extends in the shape of the upper cylinder 68 transversely along an axis substantially orthogonal to the main axis X.
  • the protrusion 70 is of complementary shape with the wall 66.
  • the protuberance 70 is of frustoconical shape, which allows an easy cooperation between the protuberance 70 and the wall 66.
  • the protuberance 70 is located in the cavity 74.
  • the locking system 56 advantageously comprises a plurality of locking springs 72.
  • Each locking spring 72 extends substantially along the main axis X.
  • the locking spring 72 is connected to the car 14 and the protrusion 70.
  • the locking spring 72 is configured to move from a first rest position to a second compressed position, the distance between the protuberance 70 and the car 14 being lower in the compressed position relative to the rest configuration. The locking spring 72 forces the protrusion 70 towards the rest position.
  • the protuberance 70 cooperates with the wall 66 and rests against it, due to the gravity acting on the jack 36, as illustrated in FIGS. figures 2 and 4 .
  • the locking spring 72 is then in the rest position.
  • the locking spring 72 is then configured to keep the protrusion 70 in contact with the wall 66 and thus immobilize the jack 36 relative to the car 14.
  • the protuberance 70 is moved away from the wall 66, as shown in FIGS. figures 3 and 5 .
  • the first end of the jack 36 is then only connected to the car 14 by the ball 58.
  • the jack 36 is then rotatable about the ball 58.
  • the feed device 38 is able to feed the jack 36 with fluid, for example oil, having here a pressure of between 50 bars and 150 bars.
  • the feeder 38 is configured to control the movement of the piston 50 in the cylinder 48 when the ram 36 is in the deployed configuration.
  • the feed device 38 is notably configured to control the displacement of the piston 50 by feeding one of the high 52 and low chambers 54 in order to increase its volume, which makes it possible to move the piston 50.
  • the return spring 55 is placed in the other of the high chambers 52 and low 54 unpowered by the feed system 38.
  • the supply system 38 feeds the upper chamber 52 and the spring 55 is placed in the lower chamber 54.
  • the supply system 38 is then able to fill the upper chamber 52 to increase its volume so as to move the piston 50 in a direction in which the piston 50 moves away. 14.
  • the power system 38 is therefore able to increase the distance between the car 14 and the chassis 28.
  • the link 17 is a long and flexible body connecting the car 14 and the frame 28.
  • the link 17 is advantageously a metal chain comprising a link assembly 78.
  • the link 17 is configured to limit the distance between the car 14 and the frame 28 to avoid the shock of the piston 50 against the lower portion 59 of the cylinder 48, repeated shocks may lead to a deterioration of the cylinder 36. That is to say, the link 17 is stretched, and therefore prevents any displacement addition of the car 14 relative to the frame 28, before the piston 50 comes into contact with the lower portion 59 of the cylinder 48.
  • the supply system 38 is, in addition, able to impose a pressure in the upper chamber 52 so as to maintain the piston 50 at a desired constant position in the cylinder 48.
  • the system The power supply 38 is therefore able to keep the distance between the car 14 and the chassis 28 constant.
  • the supply device 38 comprises, for example, an accumulator and a reservoir (not shown) positioned at the level of the car 14 and a supply duct 76 configured to supply fluid to the upper chamber 52 and / or the lower chamber 54. .
  • the rail vehicle 10 runs on the rails 32 outside a station or a station comprising a platform 12.
  • the jack 36 is then in retracted configuration, as illustrated in FIG. figure 2 .
  • the second end 46 is mechanically free and the jack 36 is only connected to the car 14 by the ball 58.
  • the return spring 55 is in the rest position.
  • the car 14 and the bogie 16 are connected by the set 34 of springs.
  • the assembly 34 of springs allows a relative movement between the car 14 and the bogie 16 and thus to dampen the vertical oscillations between the car 14 and the bogie 16.
  • the locking system 56 immobilizes the cylinder 36 relative to the car 14 to prevent free oscillations of the cylinder 36 around the ball 58 and thus to avoid contact between the cylinder 36 and the assembly 34 of springs.
  • Each locking spring 72 is in the rest position and maintains the protrusion 70 in contact with the wall 66, as shown in FIG. figure 4 .
  • the feed device 38 does not feed the jack 36.
  • the railway vehicle 10 stops at a station along a platform 12.
  • the height of the lower floor 22 is less than the height of the platform 12 due to the mass of the car 12 and passengers and / or goods present in the interior volume 18.
  • the upper chamber 52 of the jack 36 is then fed by the feeder 38, so as to move the piston 50 down towards the frame 28 until the second end 46 comes into contact with the frame 28.
  • the pressure exerted by the jack 36 on the frame 28 then causes the cylinder 48 to move along the rod 62, upwards, towards the car 12.
  • the upper cylinder 68 slides along the first end 44 to cancel the clearance between the first portion 44 and the upper portion 60 of the cylinder 48.
  • each locking spring 72 is in the compressed position.
  • the jack 36 is then in deployed configuration.
  • the jack 36 is fed by the feed device 38, so as to move the cylinder 48 along the rod 62 upwards.
  • the jack 36 moves the car 12 away from the chassis 28 until it reaches a distance between the car 14 and the predetermined chassis 28.
  • the predetermined distance between the car 14 and the frame 28 is, for example, such that the floor height of the floor 22 of the car 14 is substantially equal to the height of the floor 12 of the platform, that is to say that the floor 22 and the platform 12 extend in the same horizontal plane.
  • the jack 36 is then powered by the feed device 38 so as to maintain constant the distance between the frame 28 and the car 14 and to prevent the free movement of the assembly 34 of springs.
  • the jack 36 does not undergo transverse forces due to the relative movements of the car 14 and the bogie 16 because the ball 58 allows the free rotation of the first end 44 .
  • the door 20 is then opened and the passengers and / or goods located in the interior volume 18 can then easily exit or be taken out of the railway vehicle 10 by the door 20 to end up on the platform 12. And conversely passengers and / or goods initially situated on platform 12 may enter or be transported in the interior volume 18.
  • the cylinder 32 is then supplied by the feed device 38, so as to move the cylinder 48 along the rod 62, downwards, towards the frame 28 until the second end 46 is no longer in position. contact with chassis 28.
  • the return spring 55 then forces the piston 50 to slide in the cylinder 48, upwards, toward the car 14.
  • the protrusion 70 cooperates with the wall 66 due to the gravity exerted on the jack 36.
  • Each locking spring 72 is in the rest position and maintains the protrusion 70 against the wall 66.
  • the locking system 56 thus immobilizes the cylinder 36 with respect to the car 14.
  • the first end 44 and the upper portion 60 of the cylinder 48 has a deflection.
  • the jack 36 is then in retracted configuration.
  • the height of the floor 22 is then less than the height of the platform 12.
  • the rail vehicle 10 starts from the station and all 34 springs is free to ensure its suspension function between the car 14 and the bogie 16.
  • the supply of the jack 36 by the feed device 30 begins before the stopping of the rail vehicle 10, so that when the rail vehicle 10 stops, the jack 36 is already in the deployed configuration and the floor 22 is already at dock 12.
  • the rail vehicle 10 starts from the station as soon as the door 20 is closed, the jack 36 returning to the retracted configuration during the beginning of the third step.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

L'invention concerne un véhicule ferroviaire comprenant une voiture (14) et un bogie (16). Le bogie (14) comprend un châssis (28) et un système de suspension secondaire (30). Le système de suspension secondaire (30) comprend :- un ensemble (34) de ressorts ;- un vérin (36) comprenant deux extrémités (44, 46) ; et- un dispositif d'alimentation (38) du vérin (36).Le vérin (36) est configuré pour passer d'une première configuration dite rétractée dans laquelle le vérin (36) est uniquement relié à la voiture (14) par la première extrémité (44) à une deuxième configuration dite déployée dans laquelle le vérin (36) est également relié au châssis (18) par la deuxième extrémité (16).Le dispositif d'alimentation (38) est configuré, dans la configuration déployée, pour alimenter le vérin (36) afin d'éloigner la voiture (14) du châssis (28) ou afin de maintenir constante la distance entre la voiture (14) et le châssis (28).The invention relates to a railway vehicle comprising a car (14) and a bogie (16). The bogie (14) comprises a frame (28) and a secondary suspension system (30). The secondary suspension system (30) comprises: - a set (34) of springs; - a jack (36) comprising two ends (44, 46); and- a device (38) for supplying the jack (36) .The jack (36) is configured to pass from a first so-called retracted configuration in which the jack (36) is only connected to the car (14) by the first end (44) to a second so-called extended configuration in which the jack (36) is also connected to the frame (18) by the second end (16) .The feed device (38) is configured in the deployed configuration, for supplying the jack (36) to move the car (14) away from the frame (28) or to keep the distance between the car (14) and the frame (28) constant.

Description

La présente invention concerne un véhicule ferroviaire comprenant au moins une voiture et au moins un bogie portant la voiture, le bogie comprenant un châssis et un système de suspension secondaire entre le châssis et la voiture, le système de suspension secondaire comprenant un ensemble de ressorts monté entre le châssis et la voiture, un vérin comprenant deux extrémités s'étendant selon un même axe et un dispositif d'alimentation du vérin.The present invention relates to a railway vehicle comprising at least one car and at least one bogie carrying the car, the bogie comprising a chassis and a secondary suspension system between the chassis and the car, the secondary suspension system comprising a set of springs mounted between the frame and the car, a cylinder comprising two ends extending along the same axis and a cylinder supply device.

Afin de faciliter la montée et la descente de personnes et/ou de marchandises, il est avantageux de pouvoir régler la hauteur de la voiture, afin de l'adapter à celle du quai lorsque le véhicule ferroviaire est en gare.In order to facilitate the ascent and descent of persons and / or goods, it is advantageous to be able to adjust the height of the car, in order to adapt it to that of the platform when the railway vehicle is in the station.

Le document US 2004/0016361 décrit un véhicule ferroviaire comprenant une voiture, un bogie et un système de suspension comprenant un ressort de suspension et un vérin en parallèle s'étendant entre la voiture et le bogie. Le vérin permet de faire varier la distance entre le bogie et la voiture, la hauteur de la voiture étant ainsi variable. Cela permet notamment de réduire la distance verticale entre le plancher de la voiture et un quai.The document US 2004/0016361 discloses a railway vehicle comprising a car, a bogie and a suspension system comprising a suspension spring and a cylinder in parallel extending between the car and the bogie. The cylinder makes it possible to vary the distance between the bogie and the car, the height of the car thus being variable. This in particular reduces the vertical distance between the floor of the car and a dock.

Cependant ce système ne donne pas entière satisfaction. En effet, lorsque le véhicule ferroviaire est en mouvement, le vérin et, en particulier, les joints du vérin subissent d'importants efforts transversaux dus au mouvement transversaux relatifs de la voiture et du bogie. Cela peut conduire à une usure prématurée du vérin et à des fuites d'huile. De plus, la présence du vérin reliant mécaniquement la voiture et le bogie, augmente la raideur du système, détériorant ainsi l'amortissement vertical entre la voiture et le bogie.However this system does not give complete satisfaction. Indeed, when the rail vehicle is moving, the cylinder and, in particular, the cylinder seals undergo significant transverse forces due to the relative transverse movement of the car and the bogie. This can lead to premature cylinder wear and oil leakage. In addition, the presence of the cylinder mechanically connecting the car and the bogie, increases the stiffness of the system, thereby deteriorating the vertical damping between the car and the bogie.

L'invention a notamment pour but de remédier à ces inconvénients en proposant un véhicule ferroviaire comprenant un système de nivellement subissant des efforts transversaux limités et n'ajoutant pas de raideur supplémentaire au système de suspension.The invention aims in particular to overcome these disadvantages by providing a railway vehicle comprising a leveling system undergoing limited transverse forces and not adding additional stiffness to the suspension system.

A cet effet, l'invention a notamment pour objet un véhicule ferroviaire du type précité, dans lequel le vérin est configuré pour passer d'une première configuration dite rétractée dans laquelle le vérin est uniquement relié à la voiture par la première extrémité du vérin à une deuxième configuration dite déployée dans laquelle le vérin est également relié au châssis par la deuxième extrémité du vérin, le dispositif d'alimentation étant configuré, dans la configuration déployée, pour alimenter le vérin afin d'éloigner la voiture du châssis ou afin de maintenir constante la distance entre la voiture et le châssis.For this purpose, the invention particularly relates to a railway vehicle of the aforementioned type, wherein the cylinder is configured to move from a first so-called retracted configuration in which the cylinder is only connected to the car by the first end of the cylinder to a second so-called deployed configuration in which the jack is also connected to the frame by the second end of the jack, the feeder being configured, in the deployed configuration, to feed the jack to move the car away from the frame or to maintain constant distance between the car and the chassis.

Le vérin est ainsi apte à amener, puis à maintenir, la voiture et le châssis à une distance constante, par exemple, choisie pour que la hauteur du plancher de la voiture à l'arrêt dans une station soit sensiblement égale à la hauteur du quai de cette station. Lorsque le véhicule ferroviaire est en mouvement entre deux stations, la deuxième extrémité du vérin est libre, le vérin ne subissant ainsi pas d'efforts transversaux dus aux mouvements relatifs entre la voiture et le bogie et n'ajoutant sensiblement pas de raideur supplémentaire au système de suspension secondaire.The cylinder is thus able to bring and then maintain the car and the chassis at a constant distance, for example, chosen so that the height of the floor of the car to the stop in a station is substantially equal to the height of the platform of this station. When the railway vehicle is in motion between two stations, the second end of the cylinder is free, the cylinder thus not undergoing transverse forces due to relative movements between the car and the bogie and adding substantially no additional stiffness to the system secondary suspension.

Un véhicule ferroviaire selon l'invention peut comporter en outre l'une ou plusieurs des caractéristiques suivantes, prises seules ou selon toutes combinaisons techniquement possibles :

  • la première extrémité du vérin est reliée à la voiture par une liaison de type rotule ;
  • le véhicule ferroviaire comprend également un système de blocage configuré pour immobiliser le vérin par rapport à la voiture lorsque le vérin est dans la configuration rétractée et pour laisser le vérin mobile en rotation autour de la rotule lorsque le vérin est dans la configuration déployée ;
  • le système de blocage comprend :
    • + un cylindre supérieur fixé sur la partie supérieure du vérin, la première extrémité du vérin étant apte à coulisser dans le cylindre supérieur ;
    • + au moins une paroi convergente faisant saillie de la voiture et définissant une cavité, la rotule étant située dans ladite cavité ;
    • + une protubérance faisant saillie transversalement du cylindre supérieur et de forme sensiblement complémentaire avec la paroi, la protubérance étant située dans la cavité ;
    • + au moins un ressort de blocage situé entre la protubérance et la voiture,
      chaque ressort de blocage étant apte à passer d'une première position de repos dans laquelle la protubérance coopère avec la paroi lorsque le vérin est dans la configuration rétractée, à une deuxième position comprimée dans laquelle la protubérance est éloignée de la paroi lorsque le vérin est dans la configuration déployée ;
  • la protubérance présente une forme sensiblement tronconique ;
  • le vérin comprend un cylindre et un piston séparant le cylindre en une chambre haute et une chambre basse, et en ce que le dispositif d'alimentation du vérin est configuré pour alimenter, dans la position déployée, seulement l'une des chambres haute et basse afin d'éloigner la voiture du châssis ou maintenir constante la distance entre la voiture et le châssis ;
  • l'autre des chambres haute et basse est équipée d'un ressort de rappel qui contraint le vérin vers la configuration rétractée ;
  • le véhicule ferroviaire comprend en outre un lien disposé entre la voiture et le châssis et configuré pour limiter l'éloignement entre la voiture et le châssis ;
  • le véhicule ferroviaire comprend quatre vérins situés aux quatre coins du châssis.
A rail vehicle according to the invention may further comprise one or more of the following features, taken alone or in any technically possible combination:
  • the first end of the jack is connected to the car by a ball joint type connection;
  • the railway vehicle also comprises a blocking system configured to immobilize the cylinder relative to the car when the cylinder is in the retracted configuration and to let the mobile cylinder rotate around the ball when the cylinder is in the deployed configuration;
  • the locking system comprises:
    • + an upper cylinder fixed on the upper part of the cylinder, the first end of the cylinder being able to slide in the upper cylinder;
    • + at least one converging wall protruding from the car and defining a cavity, the ball being located in said cavity;
    • + a protuberance projecting transversely from the upper cylinder and of substantially complementary shape with the wall, the protuberance being located in the cavity;
    • + at least one locking spring located between the protuberance and the car,
      each locking spring being able to pass from a first rest position in which the protrusion cooperates with the wall when the cylinder is in the retracted configuration, to a second compressed position in which the protuberance is moved away from the wall when the cylinder is in the deployed configuration;
  • the protuberance has a substantially frustoconical shape;
  • the cylinder comprises a cylinder and a piston separating the cylinder in a high chamber and a lower chamber, and in that the cylinder supply device is configured to supply, in the deployed position, only one of the high and low chambers to move the car away from the chassis or keep the distance between the car and the chassis constant;
  • the other of the high and low chambers is equipped with a return spring which forces the cylinder towards the retracted configuration;
  • the railway vehicle further comprises a link disposed between the car and the chassis and configured to limit the distance between the car and the chassis;
  • the railway vehicle comprises four jacks located at the four corners of the chassis.

L'invention concerne également un procédé de circulation d'un véhicule ferroviaire tel que défini précédemment, comprenant les étapes suivantes :

  • circulation du véhicule ferroviaire, le vérin étant en configuration rétractée ;
  • arrêt du véhicule ferroviaire à un quai, le vérin étant en configuration déployée et alimenté par le dispositif d'alimentation, de sorte à éloigner la voiture du châssis ou à maintenir constante la distance entre la voiture et le châssis.
The invention also relates to a method for circulating a railway vehicle as defined above, comprising the following steps:
  • circulation of the railway vehicle, the cylinder being in retracted configuration;
  • stopping the railway vehicle at a dock, the cylinder being in the deployed configuration and powered by the power device, so as to move the car away from the chassis or to keep the distance between the car and the chassis constant.

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 figures annexées parmi lesquelles :

  • la figure 1 est une vue schématique en coupe d'un véhicule ferroviaire selon l'invention, à l'arrêt à une station,
  • la figure 2 est une vue schématique en coupe, selon un plan vertical, d'un système de suspension secondaire d'un véhicule ferroviaire selon l'invention, le vérin étant en configuration rétractée,
  • la figure 3 est une vue schématique en coupe, selon un plan vertical, d'un système de suspension secondaire d'un véhicule ferroviaire selon l'invention, le vérin étant en configuration déployée,
  • la figure 4 est une vue schématique en coupe, selon un plan vertical, d'un système de blocage d'un véhicule ferroviaire selon l'invention, le vérin étant en configuration rétractée,
  • la figure 5 est une vue schématique en coupe, selon un plan vertical, d'un système de blocage d'un véhicule ferroviaire selon l'invention, le vérin étant en configuration déployée.
The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the appended figures in which:
  • the figure 1 is a schematic sectional view of a railway vehicle according to the invention, stationary at a station,
  • the figure 2 is a schematic sectional view, along a vertical plane, of a secondary suspension system of a railway vehicle according to the invention, the jack being in retracted configuration,
  • the figure 3 is a schematic sectional view, along a vertical plane, of a secondary suspension system of a railway vehicle according to the invention, the jack being in deployed configuration,
  • the figure 4 is a schematic sectional view, in a vertical plane, of a locking system of a railway vehicle according to the invention, the cylinder being in retracted configuration,
  • the figure 5 is a schematic sectional view, along a vertical plane, of a locking system of a railway vehicle according to the invention, the cylinder being in deployed configuration.

Les termes « vertical » et « horizontal » s'entendent de manière générale par rapport aux directions usuelles d'un véhicule ferroviaire circulant sur des rails horizontaux.The terms "vertical" and "horizontal" generally refer to the usual directions of a rail vehicle traveling on horizontal rails.

Un véhicule ferroviaire 10 à l'arrêt dans une station est représenté à la figure 1.A railway vehicle 10 stationary at a station is represented at the figure 1 .

La station comprend au moins un quai 12, tel que le véhicule ferroviaire 10 est arrêté le long du quai 12.The station comprises at least one platform 12, such that the railway vehicle 10 is stopped along the platform 12.

Le véhicule ferroviaire 10 comprend au moins une voiture 14, au moins un bogie 16 portant la voiture 14 et, avantageusement, un lien 17 disposé entre la voiture 14 et le bogie 16.The railway vehicle 10 comprises at least one car 14, at least one bogie 16 carrying the car 14 and, advantageously, a link 17 disposed between the car 14 and the bogie 16.

La voiture 14 présente un volume intérieur 18 configuré pour recevoir des passagers et/ou des marchandises à transporter. Le volume intérieur 18 communique avec l'extérieur par au moins une porte 20. Le volume intérieur 18 est notamment délimité par un plancher inférieur 22, sur lequel évoluent les passagers et/ou les marchandises.The car 14 has an interior volume 18 configured to receive passengers and / or goods to be transported. The interior volume 18 communicates with the outside by at least one door 20. The interior volume 18 is defined in particular by a lower floor 22, on which the passengers and / or the goods evolve.

Le bogie 16 s'étend par exemple à une extrémité de la voiture 14 et supporte deux voitures 14 adjacentes lorsque le véhicule ferroviaire 10 comprend plusieurs voitures 14. Selon un mode de réalisation conventionnel, la ou chaque voiture 14 est supportée par deux bogies 16 à chacune de ses extrémités.The bogie 16 extends for example to one end of the car 14 and supports two cars 14 adjacent when the railway vehicle 10 comprises several cars 14. According to a conventional embodiment, the or each car 14 is supported by two bogies 16 to each of its ends.

Le bogie 16 comprend des roues 24 montées mobiles en rotation sur le bogie 16 par des essieux 26, un châssis 28 et un système de suspension secondaire 30 disposé entre le châssis 28 et la voiture 14.The bogie 16 comprises wheels 24 mounted to rotate on the bogie 16 by axles 26, a frame 28 and a secondary suspension system 30 disposed between the frame 28 and the car 14.

Les roues 24 sont configurées pour rouler sur des rails 32 et ainsi permettre le déplacement du véhicule ferroviaire 10.The wheels 24 are configured to roll on rails 32 and thus allow the rail vehicle 10 to move.

Dans un mode de réalisation avantageux, le bogie 16 comprend quatre systèmes de suspension secondaire 30, situés aux quatre coins du bogie 16, le bogie 16 ayant une section transversale sensiblement rectangulaire. Le terme « transversal » est défini de manière générale par rapport à une direction sensiblement orthogonale à la direction de déplacement du véhicule ferroviaire 10.In an advantageous embodiment, the bogie 16 comprises four secondary suspension systems 30, located at the four corners of the bogie 16, the bogie 16 having a substantially rectangular cross section. The term "transverse" is defined generally with respect to a direction substantially orthogonal to the direction of travel of the railway vehicle 10.

Le système de suspension secondaire 30 s'étend selon un axe principal X s'étendant selon une direction d'élévation, par exemple sensiblement verticale lorsque le véhicule ferroviaire 10 se déplace sur des rails 32 horizontaux. Les termes « inférieur » et « supérieur » sont définis par rapport à la direction d'élévation.The secondary suspension system 30 extends along a main axis X extending in a direction of elevation, for example substantially vertical when the rail vehicle 10 moves on horizontal rails 32. The terms "lower" and "higher" are defined relative to the elevation direction.

Le système de suspension secondaire 30 permet de reprendre les débattements selon la direction d'élévation entre la voiture 14 et le bogie 16. Le système de suspension secondaire 30 permet notamment d'assurer à la fois la fonction de suspension entre la voiture 14 et le bogie 16 et la fonction de positionnement selon la direction d'élévation de la voiture 14 par rapport au quai 12 de gare.The secondary suspension system 30 makes it possible to resume the movements in the direction of elevation between the car 14 and the bogie 16. The secondary suspension system 30 makes it possible in particular to ensure both the suspension function between the car 14 and the car. bogie 16 and the positioning function according to the direction of elevation of the car 14 with respect to the station platform 12.

A cet effet, le système de suspension secondaire 30, représenté sur les figures 2 et 3, comprend un ensemble 34 de ressorts monté entre le châssis 28 et la voiture 14, un vérin 36 et un dispositif d'alimentation 38 du vérin 36.For this purpose, the secondary suspension system 30, shown in FIGS. Figures 2 and 3 , comprises a set 34 of springs mounted between the frame 28 and the car 14, a jack 36 and a feed device 38 of the jack 36.

Selon le mode de réalisation représenté sur les figures 2 et 3, l'ensemble 34 de ressorts comprend au moins un ressort interne 40 et un ressort externe 42.According to the embodiment shown on the Figures 2 and 3 the spring assembly 34 comprises at least one internal spring 40 and an outer spring 42.

Le ressort interne 40 et le ressort externe 42 sont des ressorts hélicoïdaux et coaxiaux, ayant pour axe central l'axe principal X.The inner spring 40 and the outer spring 42 are helical and coaxial springs, having the central axis X as the main axis.

Ils s'étendent chacun entre le châssis 28 et la voiture 14. Ils sont, en outre, solidaires du châssis 28 et de la voiture 14.They each extend between the chassis 28 and the car 14. They are furthermore integral with the frame 28 and the car 14.

Le diamètre du ressort interne 40 est inférieur au diamètre du ressort externe 42, de sorte que le ressort interne 40 s'étend dans le volume interne défini par le ressort externe 42.The diameter of the inner spring 40 is smaller than the diameter of the outer spring 42, so that the inner spring 40 extends into the internal volume defined by the external spring 42.

Avantageusement, le ressort interne 40 et le ressort externe 42 s'enroulent autour du vérin 36. Le ressort interne 40 et le ressort externe 42 ont, par exemple, des sens d'enroulement opposés.Advantageously, the inner spring 40 and the outer spring 42 are wound around the jack 36. The inner spring 40 and the outer spring 42 have, for example, opposite winding directions.

L'ensemble 34 de ressorts permet un déplacement relatif selon la direction d'élévation entre le châssis 28 et la voiture 14.The assembly 34 of springs allows a relative displacement in the direction of elevation between the frame 28 and the car 14.

Le vérin 36 assure une fonction de positionnement de la voiture 14 par rapport bogie 16 selon la direction d'élévation.The jack 36 provides a positioning function of the car 14 with respect to the truck 16 in the direction of elevation.

Le vérin 36 s'étend selon l'axe principal X. Le vérin 36 comprend une première extrémité 44 et une deuxième extrémité 46 sensiblement alignées selon l'axe principal X. Le vérin 36 comprend, en outre, un cylindre 48, un piston 50 séparant le cylindre 48 en une chambre haute 52 et une chambre basse 54.The jack 36 extends along the main axis X. The jack 36 comprises a first end 44 and a second end 46 substantially aligned along the main axis X. The jack 36 further comprises a cylinder 48, a piston 50 separating the cylinder 48 into a high chamber 52 and a low chamber 54.

Dans un mode de réalisation avantageux, le vérin 36 comprend en outre un système de blocage 56 lié à la première extrémité 44.In an advantageous embodiment, the jack 36 further comprises a blocking system 56 connected to the first end 44.

La première extrémité 44 du vérin 36 est liée mécaniquement à la voiture 14. Dans un mode de réalisation avantageux, la liaison entre la première extrémité 44 et la voiture 14 est une rotule 58 permettant au vérin 36 d'être mobile en rotation dans toutes les directions autour de la rotule 58 par rapport à la voiture 14.The first end 44 of the jack 36 is mechanically linked to the car 14. In an advantageous embodiment, the connection between the first end 44 and the car 14 is a ball 58 enabling the jack 36 to be rotatable in all directions. directions around the ball 58 relative to the car 14.

La deuxième extrémité 46 est configurée pour s'étendre entre une position dite libre dans laquelle la deuxième extrémité 46 est libre mécaniquement, le vérin 36 étant alors dit en configuration rétractée, et une position dite fixe dans laquelle la deuxième extrémité 46 est en contact avec le châssis 28, le vérin 36 étant alors dit en configuration déployée.The second end 46 is configured to extend between a so-called free position in which the second end 46 is mechanically free, the jack 36 then being said in retracted configuration, and a so-called fixed position in which the second end 46 is in contact with the frame 28, the cylinder 36 is then said deployed configuration.

Dans la configuration rétractée, le vérin 36 est uniquement relié à la voiture 14 par la première extrémité 44, comme illustré sur la figure 2.In the retracted configuration, the jack 36 is only connected to the car 14 through the first end 44, as shown in FIG. figure 2 .

Dans la configuration déployée, le vérin 36 est relié à la voiture 14 par la première extrémité 44 et au châssis 28 par la deuxième extrémité 46, comme illustré sur la figure 3. La deuxième extrémité 46 est alors apte à exercer une pression selon l'axe principal X sur le châssis 28.In the deployed configuration, the jack 36 is connected to the car 14 through the first end 44 and to the frame 28 through the second end 46, as shown in FIG. figure 3 . The second end 46 is then able to exert a pressure along the main axis X on the frame 28.

La première extrémité 44 et la deuxième extrémité 46 sont situées hors du cylindre 48, le cylindre 48 étant situé entre la première extrémité 44 et la deuxième extrémité 46 selon l'axe principal X.The first end 44 and the second end 46 are located outside the cylinder 48, the cylinder 48 being located between the first end 44 and the second end 46 along the main axis X.

Le cylindre 48 s'étend le long de l'axe principal X entre une partie inférieure 59 et une partie supérieure 60.The cylinder 48 extends along the main axis X between a lower portion 59 and an upper portion 60.

Le piston 50 est mobile dans le cylindre 48 et comprend une tête 61 et une tige 62 solidaire de la tête 61.The piston 50 is movable in the cylinder 48 and comprises a head 61 and a rod 62 secured to the head 61.

La tête 61 est apte à coulisser dans le cylindre 48 selon l'axe principal X, entre la partie inférieure 59 et la partie supérieure 60.The head 61 is able to slide in the cylinder 48 along the main axis X, between the lower part 59 and the upper part 60.

La tête 61 sépare le cylindre 48 en deux chambres séparées hermétiquement l'une de l'autre, à savoir la chambre haute 52 et la chambre basse 54.The head 61 separates the cylinder 48 into two chambers hermetically separated from one another, namely the upper chamber 52 and the lower chamber 54.

La tige 62 traverse de façon hermétique la partie inférieure 59 du cylindre 48 suivant l'axe principal X au niveau d'un orifice 64 de passage. La tige 62 comprend la deuxième extrémité 46. La deuxième extrémité 46 est située à l'opposé de la tête 61 par rapport à l'axe principal X.The rod 62 passes hermetically through the lower portion 59 of the cylinder 48 along the main axis X at a through orifice 64. The rod 62 comprises the second end 46. The second end 46 is located opposite the head 61 relative to the main axis X.

Selon un mode de réalisation, le vérin 36 comprend en outre avantageusement, au moins un ressort de rappel 55. Le ressort de rappel 55 est inséré dans le cylindre 48. Le ressort de rappel 55 est un ressort hélicoïdal ayant pour axe central l'axe principal X.According to one embodiment, the jack 36 furthermore advantageously comprises at least one return spring 55. The return spring 55 is inserted into the cylinder 48. The return spring 55 is a helical spring whose central axis is the axis main X.

Le ressort de rappel 55 est configuré pour contraindre le vérin 36 vers la configuration rétractée.The return spring 55 is configured to constrain the ram 36 to the retracted configuration.

Dans l'exemple illustré sur la figure 2, le ressort de rappel 55 est situé dans la chambre basse 54 et relie la tête 61 à la partie inférieure 59 du cylindre 48. Le ressort de rappel 55 contraint la tête 61 vers une position éloignée de la partie inférieure 59 du cylindre 48. La tige 62, est avantageusement, insérée dans le ressort de rappel 55, ce qui limite l'encombrement du vérin 36.In the example shown on the figure 2 , the return spring 55 is located in the lower chamber 54 and connects the head 61 to the lower portion 59 of the cylinder 48. The return spring 55 constrains the head 61 to a position remote from the lower portion 59 of the cylinder 48. rod 62, is advantageously inserted into the return spring 55, which limits the bulk of the jack 36.

Dans un mode de réalisation avantageux, le système de blocage 56 est situé entre la première extrémité 44 et le cylindre 48, comme illustré sur les figures 4 et 5.In an advantageous embodiment, the locking system 56 is located between the first end 44 and the cylinder 48, as illustrated in FIGS. Figures 4 and 5 .

Le système de blocage 56 est configuré pour immobiliser le vérin 36 par rapport à la voiture 14 lorsque le vérin 36 est dans la configuration rétractée, comme illustré sur la figure 4.The locking system 56 is configured to immobilize the jack 36 with respect to the car 14 when the jack 36 is in the retracted configuration, as shown in FIG. figure 4 .

Dans la configuration rétractée, le vérin 36 étant seulement fixé par la première extrémité 44 à la voiture 14, le système de blocage 56 fixe ainsi le vérin 36 par rapport à la voiture 14. Cela permet d'éviter au vérin 36 d'osciller librement autour de la rotule 58 et d'entrer en contact avec l'ensemble 34 de ressorts, ce qui pourrait amener à une dégradation rapide du vérin 36 et de l'ensemble 34 de ressorts.In the retracted configuration, the jack 36 being only fixed by the first end 44 to the car 14, the locking system 56 thus fixes the jack 36 relative to the car 14. This prevents the jack 36 from oscillating freely. around the ball 58 and come into contact with the assembly 34 of springs, which could lead to rapid degradation of the cylinder 36 and the assembly 34 of springs.

Le système de blocage 56 est, en outre, configuré pour laisser le vérin 36 mobile en rotation autour de la rotule 58 lorsque le vérin 36 est dans la configuration déployée, comme illustré sur la figure 5.The locking system 56 is further configured to keep the cylinder 36 rotatable about the ball 58 when the cylinder 36 is in the deployed configuration, as shown in FIG. figure 5 .

Dans la configuration déployée, le vérin 36 étant lié à la voiture 14 et au châssis 28, le vérin 36 est susceptible de s'écarter de la direction de l'axe principal X du fait des éventuels mouvements relatifs transversaux entre la voiture 14 et le bogie 16. Le vérin 36 étant mobile en rotation autour de la rotule 58, le vérin 36 ne subit pas d'efforts transversaux dus à ces mouvements relatifs entre la voiture 14 et le bogie 16.In the deployed configuration, the jack 36 being connected to the car 14 and to the frame 28, the jack 36 is likely to deviate from the direction of the main axis X because of the possible transverse relative movements between the car 14 and the car. bogie 16. The cylinder 36 being rotatable about the ball 58, the cylinder 36 does not undergo transverse forces due to these relative movements between the car 14 and the bogie 16.

De plus, le vérin 36 n'ajoute pas de raideur supplémentaire au système de suspension secondaire 30.In addition, the jack 36 does not add additional stiffness to the secondary suspension system 30.

Le système de blocage 56 comprend par exemple au moins une paroi 66, un cylindre supérieur 68, une protubérance 70 et au moins un ressort de blocage 72.The locking system 56 comprises for example at least one wall 66, an upper cylinder 68, a protrusion 70 and at least one locking spring 72.

La paroi 66 fait saillie de la face extérieure du plancher de la voiture 14 en direction du bogie 16. La paroi 66 est convergente, sensiblement vers l'axe principal X.The wall 66 projects from the outside face of the floor of the car 14 towards the bogie 16. The wall 66 converges substantially towards the main axis X.

La paroi 66 définit une cavité 74 ouverte selon l'axe principal X à l'extrémité inférieure de la paroi 66.The wall 66 defines a cavity 74 open along the main axis X at the lower end of the wall 66.

La rotule 58 est située dans la cavité 74.The ball 58 is located in the cavity 74.

Le cylindre supérieur 68 fait saillie de la partie supérieure 60 du cylindre 48 dans la direction de l'axe principal X. Le diamètre du cylindre supérieur 68 est avantageusement inférieur au diamètre du cylindre 68.The upper cylinder 68 projects from the upper part 60 of the cylinder 48 in the direction of the main axis X. The diameter of the upper cylinder 68 is advantageously smaller than the diameter of the cylinder 68.

Le cylindre supérieur 68 est inséré partiellement dans la cavité 74.The upper cylinder 68 is partially inserted into the cavity 74.

La première extrémité 44 est reçue dans le cylindre supérieur 68. La première extrémité 44 est apte à coulisser dans le cylindre supérieur 68 selon l'axe principal X. Ainsi la première extrémité 44 est liée au cylindre 48 via le système de blocage 56.The first end 44 is received in the upper cylinder 68. The first end 44 is slidable in the upper cylinder 68 along the main axis X. Thus, the first end 44 is connected to the cylinder 48 via the locking system 56.

La protubérance 70 s'étend en saille de du cylindre supérieur 68 transversalement, selon un axe sensiblement orthogonal à l'axe principal X.The protuberance 70 extends in the shape of the upper cylinder 68 transversely along an axis substantially orthogonal to the main axis X.

La protubérance 70 est de forme complémentaire avec la paroi 66. De façon avantageuse, la protubérance 70 est de forme tronconique, ce qui permet une coopération aisée entre la protubérance 70 et la paroi 66.The protrusion 70 is of complementary shape with the wall 66. Advantageously, the protuberance 70 is of frustoconical shape, which allows an easy cooperation between the protuberance 70 and the wall 66.

La protubérance 70 est située dans la cavité 74.The protuberance 70 is located in the cavity 74.

Le système de blocage 56 comprend avantageusement une pluralité de ressorts de blocage 72.The locking system 56 advantageously comprises a plurality of locking springs 72.

Chaque ressort de blocage 72 s'étend sensiblement selon l'axe principal X.Each locking spring 72 extends substantially along the main axis X.

Le ressort de blocage 72 est lié à la voiture 14 et à la protubérance 70.The locking spring 72 is connected to the car 14 and the protrusion 70.

Le ressort de blocage 72 est configuré pour passer d'une première position de repos à une deuxième position comprimée, la distance entre la protubérance 70 et la voiture 14 étant inférieure dans la position comprimée par rapport à la configuration de repos. Le ressort de blocage 72 contraint la protubérance 70 vers la position de repos.The locking spring 72 is configured to move from a first rest position to a second compressed position, the distance between the protuberance 70 and the car 14 being lower in the compressed position relative to the rest configuration. The locking spring 72 forces the protrusion 70 towards the rest position.

Lorsque le vérin 36 est dans la configuration rétractée, la protubérance 70 coopère avec la paroi 66 et repose en appui sur celle-ci, du fait de la gravité s'exerçant sur le vérin 36, comme illustré sur les figures 2 et 4.When the jack 36 is in the retracted configuration, the protuberance 70 cooperates with the wall 66 and rests against it, due to the gravity acting on the jack 36, as illustrated in FIGS. figures 2 and 4 .

Le ressort de blocage 72 est alors dans la position de repos.The locking spring 72 is then in the rest position.

Le ressort de blocage 72 est alors configuré pour maintenir la protubérance 70 en contact avec la paroi 66 et ainsi immobiliser le vérin 36 par rapport à la voiture 14.The locking spring 72 is then configured to keep the protrusion 70 in contact with the wall 66 and thus immobilize the jack 36 relative to the car 14.

Lorsque le vérin 36 est dans la configuration déployée, la protubérance 70 est éloignée de la paroi 66, comme illustré sur les figures 3 et 5.When the jack 36 is in the deployed configuration, the protuberance 70 is moved away from the wall 66, as shown in FIGS. figures 3 and 5 .

La première extrémité du vérin 36 est alors uniquement reliée à la voiture 14 par la rotule 58. Le vérin 36 est alors mobile en rotation autour de la rotule 58.The first end of the jack 36 is then only connected to the car 14 by the ball 58. The jack 36 is then rotatable about the ball 58.

Le dispositif d'alimentation 38 est apte à alimenter le vérin 36 en fluide, par exemple en huile, ayant ici une pression comprise entre 50 bars et 150 bars.The feed device 38 is able to feed the jack 36 with fluid, for example oil, having here a pressure of between 50 bars and 150 bars.

Le dispositif d'alimentation 38 est configuré pour commander le déplacement du piston 50 dans le cylindre 48, lorsque le vérin 36 est dans la configuration déployée.The feeder 38 is configured to control the movement of the piston 50 in the cylinder 48 when the ram 36 is in the deployed configuration.

Le dispositif d'alimentation 38 est notamment configuré pour commander le déplacement du piston 50 en alimentant l'une des chambres haute 52 et basse 54 afin d'en augmenter le volume, ce qui permet de déplacer le piston 50.The feed device 38 is notably configured to control the displacement of the piston 50 by feeding one of the high 52 and low chambers 54 in order to increase its volume, which makes it possible to move the piston 50.

Le ressort de rappel 55 est placé dans l'autre des chambres haute 52 et basse 54 non alimentée par le système d'alimentation 38.The return spring 55 is placed in the other of the high chambers 52 and low 54 unpowered by the feed system 38.

Dans l'exemple illustré sur les figures 2 et 3, le système d'alimentation 38 alimente la chambre haute 52 et le ressort 55 est placé dans la chambre basse 54.In the example shown on the Figures 2 and 3 , the supply system 38 feeds the upper chamber 52 and the spring 55 is placed in the lower chamber 54.

Lorsque le vérin 36 est dans la configuration déployée, le système d'alimentation 38 est alors apte à remplir la chambre haute 52 afin d'en augmenter le volume de sorte à déplacer le piston 50 selon une direction dans laquelle le piston 50 s'éloigne de la voiture 14. Le système d'alimentation 38 est donc apte à augmenter la distance entre la voiture 14 et le châssis 28.When the jack 36 is in the deployed configuration, the supply system 38 is then able to fill the upper chamber 52 to increase its volume so as to move the piston 50 in a direction in which the piston 50 moves away. 14. The power system 38 is therefore able to increase the distance between the car 14 and the chassis 28.

Le lien 17 est un corps long et flexible reliant la voiture 14 et le châssis 28. Le lien 17 est avantageusement une chaine métallique comprenant un assemblage de maillons 78. Le lien 17 est configuré pour limiter l'éloignement entre la voiture 14 et le châssis 28 afin d'éviter le choc du piston 50 contre la partie inférieure 59 du cylindre 48, des chocs répétés pouvant conduire à une détérioration du vérin 36. C'est-à-dire que le lien 17 est tendu, et empêche donc tout déplacement supplémentaire de la voiture 14 par rapport au châssis 28, avant que le piston 50 n'entre en contact avec la partie inférieure 59 du cylindre 48.The link 17 is a long and flexible body connecting the car 14 and the frame 28. The link 17 is advantageously a metal chain comprising a link assembly 78. The link 17 is configured to limit the distance between the car 14 and the frame 28 to avoid the shock of the piston 50 against the lower portion 59 of the cylinder 48, repeated shocks may lead to a deterioration of the cylinder 36. That is to say, the link 17 is stretched, and therefore prevents any displacement addition of the car 14 relative to the frame 28, before the piston 50 comes into contact with the lower portion 59 of the cylinder 48.

Lorsque le vérin 36 est dans la configuration déployée, le système d'alimentation 38 est, en outre, apte à imposer une pression dans la chambre haute 52 de sorte à maintenir le piston 50 à une position constante souhaitée dans le cylindre 48. Le système d'alimentation 38 est donc apte à maintenir constante la distance entre la voiture 14 et le châssis 28.When the jack 36 is in the deployed configuration, the supply system 38 is, in addition, able to impose a pressure in the upper chamber 52 so as to maintain the piston 50 at a desired constant position in the cylinder 48. The system The power supply 38 is therefore able to keep the distance between the car 14 and the chassis 28 constant.

Le dispositif d'alimentation 38 comprend, par exemple, un accumulateur et un réservoir (non représentés) positionnés au niveau de la voiture 14 et un conduit d'alimentation 76 configuré pour alimenter en fluide la chambre haute 52 et/ou la chambre basse 54.The supply device 38 comprises, for example, an accumulator and a reservoir (not shown) positioned at the level of the car 14 and a supply duct 76 configured to supply fluid to the upper chamber 52 and / or the lower chamber 54. .

Le fonctionnement du système de suspension secondaire 30 et notamment du système de blocage 56 va maintenant être expliqué plus en détails, à l'aide de la description d'un procédé de circulation du véhicule ferroviaire 10.The operation of the secondary suspension system 30 and in particular of the locking system 56 will now be explained in more detail, using the description of a circulation process of the railway vehicle 10.

Dans une première étape, le véhicule ferroviaire 10 circule sur les rails 32 en dehors d'une gare ou d'une station comprenant un quai 12.In a first step, the rail vehicle 10 runs on the rails 32 outside a station or a station comprising a platform 12.

Le vérin 36 est alors en configuration rétractée, comme illustré sur la figure 2. La deuxième extrémité 46 est libre mécaniquement et le vérin 36 est uniquement relié à la voiture 14 par la rotule 58.The jack 36 is then in retracted configuration, as illustrated in FIG. figure 2 . The second end 46 is mechanically free and the jack 36 is only connected to the car 14 by the ball 58.

Le ressort de rappel 55 est en position de repos.The return spring 55 is in the rest position.

La voiture 14 et le bogie 16 sont reliés par l'ensemble 34 de ressorts. L'ensemble 34 de ressorts permet un déplacement relatif entre la voiture 14 et le bogie 16 et ainsi d'amortir les oscillations verticales entre la voiture 14 et le bogie 16.The car 14 and the bogie 16 are connected by the set 34 of springs. The assembly 34 of springs allows a relative movement between the car 14 and the bogie 16 and thus to dampen the vertical oscillations between the car 14 and the bogie 16.

Le système de blocage 56 immobilise le vérin 36 par rapport à la voiture 14 afin d'éviter les oscillations libres du vérin 36 autour de la rotule 58 et ainsi d'éviter tout contact entre le vérin 36 et l'ensemble 34 de ressorts.The locking system 56 immobilizes the cylinder 36 relative to the car 14 to prevent free oscillations of the cylinder 36 around the ball 58 and thus to avoid contact between the cylinder 36 and the assembly 34 of springs.

Chaque ressort de blocage 72 est en position de repos et maintient la protubérance 70 en contact avec la paroi 66, comme illustré sur la figure 4.Each locking spring 72 is in the rest position and maintains the protrusion 70 in contact with the wall 66, as shown in FIG. figure 4 .

Il existe alors un débattement entre la première extrémité 44 et la partie supérieure 60 du cylindre.There is then a movement between the first end 44 and the upper part 60 of the cylinder.

Le dispositif d'alimentation 38 n'alimente pas le vérin 36.The feed device 38 does not feed the jack 36.

Puis, dans une deuxième étape, le véhicule ferroviaire 10 s'arrête à une station le long d'un quai 12.Then, in a second step, the railway vehicle 10 stops at a station along a platform 12.

La hauteur du plancher inférieur 22 est inférieure à la hauteur du quai 12 du fait de la masse de la voiture 12 et des passagers et/ou marchandises présents dans le volume intérieur 18.The height of the lower floor 22 is less than the height of the platform 12 due to the mass of the car 12 and passengers and / or goods present in the interior volume 18.

La chambre haute 52 du vérin 36 est alors alimentée par le dispositif d'alimentation 38, de sorte à déplacer le piston 50 vers le bas en direction du châssis 28 jusqu'à ce que la deuxième extrémité 46 rentre en contact avec le châssis 28.The upper chamber 52 of the jack 36 is then fed by the feeder 38, so as to move the piston 50 down towards the frame 28 until the second end 46 comes into contact with the frame 28.

La pression exercée par le vérin 36 sur le châssis 28 entraine alors le déplacement du cylindre 48 le long de la tige 62, vers le haut, en direction de la voiture 12.The pressure exerted by the jack 36 on the frame 28 then causes the cylinder 48 to move along the rod 62, upwards, towards the car 12.

Le cylindre supérieur 68 coulisse le long de la première extrémité 44 jusqu'à annuler le débattement entre la première partie 44 et la partie supérieure 60 du cylindre 48.The upper cylinder 68 slides along the first end 44 to cancel the clearance between the first portion 44 and the upper portion 60 of the cylinder 48.

La protubérance 70 n'est alors plus en contact avec la paroi 66 et chaque ressort de blocage 72 est en position comprimée.The protrusion 70 is then no longer in contact with the wall 66 and each locking spring 72 is in the compressed position.

Le vérin 36 est alors en configuration déployée.The jack 36 is then in deployed configuration.

Puis, le vérin 36 est alimenté par le dispositif d'alimentation 38, de sorte à déplacer le cylindre 48 le long de la tige 62 vers le haut.Then, the jack 36 is fed by the feed device 38, so as to move the cylinder 48 along the rod 62 upwards.

Ainsi, le vérin 36 éloigne la voiture 12 du châssis 28 jusqu'à atteindre une distance entre la voiture 14 et le châssis 28 prédéterminée. La distance prédéterminée entre la voiture 14 et le châssis 28 est, par exemple, telle que la hauteur au sol du plancher 22 de la voiture 14 est sensiblement égale à la hauteur au sol du quai 12, c'est-à-dire que le plancher 22 et le quai 12 s'étendent dans un même plan horizontal.Thus, the jack 36 moves the car 12 away from the chassis 28 until it reaches a distance between the car 14 and the predetermined chassis 28. The predetermined distance between the car 14 and the frame 28 is, for example, such that the floor height of the floor 22 of the car 14 is substantially equal to the height of the floor 12 of the platform, that is to say that the floor 22 and the platform 12 extend in the same horizontal plane.

Le vérin 36 est alors alimenté par le dispositif d'alimentation 38 de sorte à maintenir constante la distance entre le châssis 28 et la voiture 14 et à empêcher le libre mouvement de l'ensemble 34 de ressorts.The jack 36 is then powered by the feed device 38 so as to maintain constant the distance between the frame 28 and the car 14 and to prevent the free movement of the assembly 34 of springs.

Tout au long de la deuxième étape, lorsque le vérin 36 est déployé, le vérin 36 ne subit pas d'efforts transversaux dus aux mouvements relatifs de la voiture 14 et du bogie 16 car la rotule 58 permet la libre rotation de la première extrémité 44.Throughout the second step, when the jack 36 is deployed, the jack 36 does not undergo transverse forces due to the relative movements of the car 14 and the bogie 16 because the ball 58 allows the free rotation of the first end 44 .

La porte 20 est alors ouverte et les passagers et/ou marchandises situées dans le volume intérieur 18 peuvent alors aisément sortir ou être sorties du véhicule ferroviaire 10 par la porte 20 afin de se retrouver sur le quai 12. Et inversement des passagers et/ou des marchandises situées initialement sur le quai 12 peuvent entrer ou être transportées dans le volume intérieur 18.The door 20 is then opened and the passengers and / or goods located in the interior volume 18 can then easily exit or be taken out of the railway vehicle 10 by the door 20 to end up on the platform 12. And conversely passengers and / or goods initially situated on platform 12 may enter or be transported in the interior volume 18.

Lorsque tous les passagers et/ou marchandises sont sortis et/ou entrés dans le volume intérieur 18, la porte 20 est refermée.When all the passengers and / or goods are out and / or entered in the interior volume 18, the door 20 is closed.

Le vérin 32 est alors alimenté par le dispositif d'alimentation 38, de sorte à déplacer le cylindre 48 le long de la tige 62, vers le bas, en direction du châssis 28 jusqu'à ce que la deuxième extrémité 46 ne soit plus en contact avec le châssis 28.The cylinder 32 is then supplied by the feed device 38, so as to move the cylinder 48 along the rod 62, downwards, towards the frame 28 until the second end 46 is no longer in position. contact with chassis 28.

Le ressort de rappel 55 contraint alors le piston 50 à coulisser dans le cylindre 48, vers le haut, en direction de la voiture 14.The return spring 55 then forces the piston 50 to slide in the cylinder 48, upwards, toward the car 14.

La protubérance 70 coopère avec la paroi 66 du fait de la gravité s'exerçant sur le vérin 36. Chaque ressort de blocage 72 est dans la position de repos et maintient la protubérance 70 contre la paroi 66. Le système de blocage 56 immobilise donc le vérin 36 par rapport à la voiture 14.The protrusion 70 cooperates with the wall 66 due to the gravity exerted on the jack 36. Each locking spring 72 is in the rest position and maintains the protrusion 70 against the wall 66. The locking system 56 thus immobilizes the cylinder 36 with respect to the car 14.

La première extrémité 44 et la partie supérieure 60 du cylindre 48 présente un débattement.The first end 44 and the upper portion 60 of the cylinder 48 has a deflection.

Le vérin 36 est alors en configuration rétractée.The jack 36 is then in retracted configuration.

La hauteur du plancher 22 est alors inférieure à la hauteur du quai 12.The height of the floor 22 is then less than the height of the platform 12.

Enfin, dans une troisième étape, le véhicule ferroviaire 10 démarre de la station et l'ensemble 34 de ressorts est libre s'assurer sa fonction de suspension entre la voiture 14 et le bogie 16.Finally, in a third step, the rail vehicle 10 starts from the station and all 34 springs is free to ensure its suspension function between the car 14 and the bogie 16.

En variante, l'alimentation du vérin 36 par le dispositif d'alimentation 30 commence avant l'arrêt du véhicule ferroviaire 10, de sorte qu'à l'arrêt du véhicule ferroviaire 10, le vérin 36 est déjà en configuration déployée et que le plancher 22 est déjà à hauteur de quai 12.As a variant, the supply of the jack 36 by the feed device 30 begins before the stopping of the rail vehicle 10, so that when the rail vehicle 10 stops, the jack 36 is already in the deployed configuration and the floor 22 is already at dock 12.

En variante, le véhicule ferroviaire 10 démarre de la station dès la fermeture de la porte 20, le vérin 36 revenant en configuration rétractée pendant le début de la troisième étape.As a variant, the rail vehicle 10 starts from the station as soon as the door 20 is closed, the jack 36 returning to the retracted configuration during the beginning of the third step.

Claims (9)

Véhicule ferroviaire (10) comprenant au moins une voiture (14) et au moins un bogie (16) portant la voiture (14), le bogie (16) comprenant un châssis (28) et un système de suspension secondaire (30) entre le châssis (28) et la voiture (14), le système de suspension secondaire (30) comprenant : - un ensemble (34) de ressorts monté entre le châssis (28) et la voiture (14) ; - un vérin (36) comprenant deux extrémités (44, 46) s'étendant selon un même axe (X) ; et - un dispositif d'alimentation (38) du vérin (36) ; caractérisé en ce que le vérin (36) est configuré pour passer d'une première configuration dite rétractée dans laquelle le vérin (36) est uniquement relié à la voiture (14) par la première extrémité (44) du vérin (36) à une deuxième configuration dite déployée dans laquelle le vérin (36) est également relié au châssis (18) par la deuxième extrémité (16) du vérin (36), le dispositif d'alimentation (38) étant configuré, dans la configuration déployée, pour alimenter le vérin (36) afin d'éloigner la voiture (14) du châssis (28) ou afin de maintenir constante la distance entre la voiture (14) et le châssis (28),
la première extrémité (44) du vérin (36) étant reliée à la voiture (14) par une liaison de type rotule (58).Railway vehicle (10) comprising at least one car (14) and at least one bogie (16) carrying the car (14), the bogie (16) comprising a frame (28) and a secondary suspension system (30) between the chassis (28) and the car (14), the secondary suspension system (30) comprising: - a set (34) of springs mounted between the frame (28) and the car (14); a jack (36) comprising two ends (44, 46) extending along the same axis (X); and a feed device (38) for the jack (36); characterized in that the jack (36) is configured to move from a first so-called retracted configuration in which the jack (36) is only connected to the car (14) through the first end (44) of the jack (36) to a second so-called deployed configuration in which the jack (36) is also connected to the frame (18) by the second end (16) of the jack (36), the feeding device (38) being configured, in the deployed configuration, to feed the jack (36) for moving the car (14) away from the frame (28) or to keep the distance between the car (14) and the frame (28) constant,
the first end (44) of the jack (36) being connected to the car (14) by a ball-type connection (58). Véhicule ferroviaire (10) selon la revendication 1, comprenant également un système de blocage (56) configuré pour immobiliser le vérin (36) par rapport à la voiture (14) lorsque le vérin (36) est dans la configuration rétractée et pour laisser le vérin (36) mobile en rotation autour de la rotule (58) lorsque le vérin (36) est dans la configuration déployée.A railway vehicle (10) according to claim 1, further comprising a locking system (56) configured to immobilize the jack (36) relative to the car (14) when the jack (36) is in the retracted configuration and to leave the cylinder (36) rotatable about the ball (58) when the jack (36) is in the deployed configuration. Véhicule ferroviaire (10) selon la revendication 2, dans lequel le système de blocage (56) comprend : - un cylindre supérieur (68) fixé sur la partie supérieure (60) du vérin (36), la première extrémité (44) du vérin (36) étant apte à coulisser dans le cylindre supérieur (68) ; - au moins une paroi (66) convergente faisant saillie de la voiture (14) et définissant une cavité (74), la rotule (58) étant située dans ladite cavité (74) ; - une protubérance (70) faisant saillie transversalement du cylindre supérieur (68) et de forme sensiblement complémentaire avec la paroi (66), la protubérance (70) étant située dans la cavité (74) ; - au moins un ressort de blocage (72) situé entre la protubérance (70) et la voiture (14), chaque ressort de blocage (72) étant apte à passer d'une première position de repos dans laquelle la protubérance (70) coopère avec la paroi (66) lorsque le vérin (36) est dans la configuration rétractée, à une deuxième position comprimée dans laquelle la protubérance (70) est éloignée de la paroi (66) lorsque le vérin (36) est dans la configuration déployée. A railway vehicle (10) according to claim 2, wherein the locking system (56) comprises: - an upper cylinder (68) fixed on the upper part (60) of the cylinder (36), the first end (44) of the cylinder (36) being slidable in the upper cylinder (68); at least one converging wall (66) projecting from the car (14) and defining a cavity (74), the ball (58) being located in said cavity (74); - a protuberance (70) projecting transversely of the upper cylinder (68) and substantially complementary shape with the wall (66), the protuberance (70) being located in the cavity (74); - at least one locking spring (72) located between the protuberance (70) and the car (14), each locking spring (72) being able to pass from a first rest position in which the protuberance (70) cooperates with the wall (66) when the jack (36) is in the retracted configuration, at a second compressed position in which the protuberance (70) is moved away from the wall (66) when the jack (36) is in the deployed configuration. Véhicule ferroviaire (10) selon la revendication 3, dans lequel la protubérance (70) présente une forme sensiblement tronconique.Railway vehicle (10) according to claim 3, wherein the protuberance (70) has a substantially frustoconical shape. Véhicule ferroviaire (10) selon l'une quelconque des revendications précédentes, dans lequel le vérin (36) comprend un cylindre (48) et un piston (50) séparant le cylindre (48) en une chambre haute (52) et une chambre basse (54), et en ce que le dispositif d'alimentation (38) du vérin (36) est configuré pour alimenter, dans la position déployée, seulement l'une des chambres haute (52) et basse (54) afin d'éloigner la voiture (14) du châssis (28) ou maintenir constante la distance entre la voiture (14) et le châssis (28).A railway vehicle (10) according to any one of the preceding claims, wherein the jack (36) comprises a cylinder (48) and a piston (50) separating the cylinder (48) into a high chamber (52) and a lower chamber (54), and in that the feed device (38) of the ram (36) is configured to supply, in the deployed position, only one of the upper (52) and lower (54) chambers in order to distance the car (14) of the chassis (28) or keep the distance between the car (14) and the chassis (28) constant. Véhicule ferroviaire (10) selon la revendication 5, dans lequel l'autre des chambres haute (52) et basse (54) est équipée d'un ressort de rappel (55) qui contraint le vérin (36) vers la configuration rétractée.A railway vehicle (10) according to claim 5, wherein the other of the upper (52) and lower (54) chambers is provided with a return spring (55) which constrains the ram (36) to the retracted configuration. Véhicule ferroviaire (10) selon l'une quelconque des revendications précédentes, comprenant en outre un lien (17) disposé entre la voiture (14) et le châssis (28) et configuré pour limiter l'éloignement entre la voiture (14) et le châssis (28).A railway vehicle (10) according to any one of the preceding claims, further comprising a link (17) disposed between the car (14) and the frame (28) and configured to limit the distance between the car (14) and the car (14). chassis (28). Véhicule ferroviaire (10) selon l'une quelconque des revendications précédentes, comprenant quatre vérins (36) situés aux quatre coins du châssis (28).A railway vehicle (10) according to any one of the preceding claims, comprising four jacks (36) at the four corners of the frame (28). Procédé de circulation d'un véhicule ferroviaire (10) selon l'une quelconque des revendications 1 à 8, comprenant les étapes suivantes : - circulation du véhicule ferroviaire (10), le vérin (36) étant en configuration rétractée ; - arrêt du véhicule ferroviaire (10) à un quai (12), le vérin (36) étant en configuration déployée et alimenté par le dispositif d'alimentation (38), de sorte à éloigner la voiture (14) du châssis (28) ou à maintenir constante la distance entre la voiture (14) et le châssis (28). A method of circulating a railway vehicle (10) according to any one of claims 1 to 8, comprising the steps of: - circulation of the railway vehicle (10), the cylinder (36) being in retracted configuration; stopping the railway vehicle (10) at a platform (12), the cylinder (36) being in deployed configuration and powered by the supply device (38), so as to move the car (14) away from the chassis (28) or to keep the distance between the car (14) and the chassis (28) constant.
EP19169267.2A 2018-04-17 2019-04-15 Railway vehicle and associated circulation method Active EP3556634B1 (en)

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FR3080076B1 (en) * 2018-04-17 2020-09-18 Alstom Transp Tech RAILWAY VEHICLE AND ASSOCIATED CIRCULATION METHOD

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WO2006111398A1 (en) * 2005-04-22 2006-10-26 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Device for the secondary suspension of a body of a rail vehicle
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CA3040398A1 (en) 2019-10-17
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FR3080077B1 (en) 2020-09-18
PL3556634T3 (en) 2021-08-02
US20190315381A1 (en) 2019-10-17
FR3080077A1 (en) 2019-10-18
ES2867302T3 (en) 2021-10-20

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