EP3556634B1 - Railway vehicle and associated circulation method - Google Patents

Railway vehicle and associated circulation method Download PDF

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Publication number
EP3556634B1
EP3556634B1 EP19169267.2A EP19169267A EP3556634B1 EP 3556634 B1 EP3556634 B1 EP 3556634B1 EP 19169267 A EP19169267 A EP 19169267A EP 3556634 B1 EP3556634 B1 EP 3556634B1
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EP
European Patent Office
Prior art keywords
jack
car
chassis
railway vehicle
cylinder
Prior art date
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Active
Application number
EP19169267.2A
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German (de)
French (fr)
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EP3556634A1 (en
Inventor
Jérémy Clavier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Transport 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 chassis and the car, a jack comprising two ends extending along the same axis and a device for supplying the jack.
  • the document US 2004/0016361 discloses a railway vehicle comprising a car, a bogie and a suspension system comprising a suspension spring and a parallel cylinder extending between the car and the bogie.
  • the jack makes it possible to vary the distance between the bogie and the car, the height of the car being thus variable. This makes it possible in particular to reduce the vertical distance between the floor of the car and a platform.
  • the object of the invention is in particular to remedy these drawbacks by proposing a rail vehicle comprising a leveling system undergoing limited transverse forces and not adding additional stiffness to the suspension system.
  • the subject of the invention is in particular a railway vehicle according to claim 1.
  • the jack is thus able to bring, then to maintain, the car and the chassis at a constant distance, for example, chosen so that the height of the floor of the car when stationary in a station is substantially equal to the height of the platform from this station.
  • the second end of the jack is free, the jack thus not undergoing any transverse forces due to relative movements between the car and the bogie and adding noticeably no additional stiffness to the secondary suspension system.
  • a rail vehicle according to the invention may further include one or more of the features of claims 2 to 9.
  • a railway vehicle 10 stationary in a station is shown in the figure 1 .
  • the station comprises at least one platform 12, such that the rail vehicle 10 is stopped alongside the platform 12.
  • the rail vehicle 10 comprises at least one car 14, at least one bogie 16 carrying the car 14 and, advantageously, a link 17 arranged 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 exterior through at least one door 20.
  • the interior volume 18 is in particular delimited by a lower floor 22, on which the passengers and / or goods move.
  • the bogie 16 extends for example at one end of the car 14 and supports two adjacent cars 14 when the rail vehicle 10 includes several cars 14. According to a conventional embodiment, the or each car 14 is supported by two bogies 16 at each of its ends.
  • the bogie 16 comprises wheels 24 mounted to move in rotation on the bogie 16 by axles 26, a frame 28 and a secondary suspension system 30 arranged between the frame 28 and the car 14.
  • the wheels 24 are configured to run on rails 32 and thus allow the movement of the rail vehicle 10.
  • 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 rail 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 “upper” are defined with respect to the direction of elevation.
  • the secondary suspension system 30 makes it possible to resume the deflections according to 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 function of suspension between the car 14 and the vehicle. bogie 16 and the positioning function according to the direction of elevation of the car 14 relative to the station platform 12.
  • the secondary suspension system 30, shown in 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 assembly 34 of springs comprises at least one internal spring 40 and one external spring 42.
  • the internal spring 40 and the external spring 42 are helical and coaxial springs, having as central axis the main axis X.
  • the diameter of the internal spring 40 is less than the diameter of the external spring 42, so that the internal spring 40 extends into the internal volume defined by the external spring 42.
  • the internal spring 40 and the external spring 42 wind around the jack 36.
  • the internal spring 40 and the external 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 performs a function of positioning the car 14 relative to the bogie 16 in the direction of elevation.
  • the cylinder 36 extends along the main axis X.
  • the cylinder 36 comprises a first end 44 and a second end 46 substantially aligned along the main axis X.
  • the cylinder 36 further comprises a cylinder 48, a piston 50 separating the cylinder 48 into an upper chamber 52 and a lower chamber 54.
  • the jack 36 further comprises a locking system 56 linked 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 allowing the jack 36 to be able to rotate 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 cylinder 36 then being said to be in the retracted configuration, and a so-called fixed position in which the second end 46 is in contact with the frame 28, the jack 36 then being said to be in the deployed configuration.
  • the cylinder 36 In the retracted configuration, the cylinder 36 is only connected to the car 14 by the first end 44, as illustrated in the figure. figure 2 .
  • the jack 36 is connected to the car 14 by the first end 44 and to the frame 28 by the second end 46, as illustrated in the figure. 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 part 59 and an upper part 60.
  • the piston 50 is movable in the cylinder 48 and comprises a head 61 and a rod 62 integral with 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 hermetically separated chambers from one another, namely the upper chamber 52 and the lower chamber 54.
  • the rod 62 hermetically passes through the lower part 59 of the cylinder 48 along the main axis X at the level of a passage opening 64.
  • the rod 62 includes the second end 46.
  • the second end 46 is located opposite the head 61 with respect to the main axis X.
  • the jack 36 also 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 having the axis as its central axis. principal X.
  • the return spring 55 is configured to force the cylinder 36 towards the retracted configuration.
  • the return spring 55 is located in the lower chamber 54 and connects the head 61 to the lower part 59 of the cylinder 48.
  • the return spring 55 forces the head 61 to a position remote from the lower part 59 of the cylinder 48.
  • the rod 62 is advantageously inserted into the return spring 55, which limits the size of the cylinder 36.
  • the locking system 56 is located between the first end 44 and the cylinder 48, as illustrated in the figures. figures 4 and 5 .
  • the locking system 56 is configured to immobilize the ram 36 relative to the car 14 when the ram 36 is in the retracted configuration, as illustrated in the figure. figure 4 .
  • the locking system 56 thus fixes the jack 36 relative to the car 14. This makes it possible to prevent 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 of the assembly 34 of springs.
  • the locking system 56 is further configured to leave the cylinder 36 movable in rotation around the ball 58 when the cylinder 36 is in the deployed configuration, as illustrated in FIG. figure 5 .
  • the jack 36 being linked to the car 14 and to the frame 28, the jack 36 is liable to deviate from the direction of the main axis X because of any transverse relative movements between the car 14 and the bogie 16.
  • the jack 36 being movable in rotation around the ball joint 58, the jack 36 is not subjected to 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 protuberance 70 and at least one locking spring 72.
  • the wall 66 protrudes from the outer face of the floor of the car 14 in the direction of 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 protrudes 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 preferably less 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 able to slide in the upper cylinder 68 along the main axis X.
  • the first end 44 is linked to the cylinder 48 via the locking system 56.
  • the protrusion 70 protrudes from the upper cylinder 68 transversely, along an axis substantially orthogonal to the main axis X.
  • the protuberance 70 is of complementary shape with the wall 66.
  • the protuberance 70 is of frustoconical shape, which allows 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 linked to the car 14 and to 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 protrusion 70 and the car 14 being less in the compressed position compared to the rest configuration. The locking spring 72 forces the protuberance 70 towards the rest position.
  • the protuberance 70 cooperates with the wall 66 and rests on the latter, due to the gravity exerted on the cylinder 36, as illustrated in the figures. figures 2 and 4 .
  • the locking spring 72 is then in the rest position.
  • the locking spring 72 is then configured to keep the protuberance 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 illustrated in the figures. 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 movable in rotation around the ball 58.
  • the supply device 38 is suitable for supplying the cylinder 36 with fluid, for example with oil, here having a pressure of between 50 bars and 150 bars.
  • the feed device 38 is configured to control the movement of the piston 50 in the cylinder 48, when the cylinder 36 is in the deployed configuration.
  • the supply device 38 is in particular configured to control the movement of the piston 50 by supplying one of the upper 52 and lower 54 chambers 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 upper 52 and lower 54 chambers not supplied by the supply system 38.
  • the supply system 38 supplies the upper chamber 52 and the spring 55 is placed in the lower chamber 54.
  • the supply system 38 When the cylinder 36 is in the deployed configuration, the supply system 38 is then able to fill the upper chamber 52 in order to increase its volume so as to move the piston 50 in a direction in which the piston 50 moves away. of the car 14. The power supply 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 chassis 28.
  • the link 17 is advantageously a metal chain comprising an assembly of links 78.
  • the link 17 is configured to limit the distance between the car 14 and the chassis 28 in order to avoid the impact of the piston 50 against the lower part 59 of the cylinder 48, repeated shocks being able to lead to deterioration of the jack 36. That is to say that the link 17 is stretched, and therefore prevents any displacement of the car 14 with respect to the frame 28, before the piston 50 comes into contact with the lower part 59 of the cylinder 48.
  • the supply system 38 When the cylinder 36 is in the deployed configuration, the supply system 38 is, moreover, 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 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 the upper chamber 52 and / or the lower chamber 54 with fluid. .
  • the rail vehicle 10 travels on the rails 32 outside a station or a station comprising a platform 12.
  • the actuator 36 is then in the retracted configuration, as illustrated in 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.
  • Car 14 and bogie 16 are connected by the set 34 of springs.
  • the assembly 34 of springs allows a relative displacement between the car 14 and the bogie 16 and thus to damp the vertical oscillations between the car 14 and the bogie 16.
  • the locking system 56 immobilizes the jack 36 relative to the car 14 in order to avoid free oscillations of the jack 36 around the ball joint 58 and thus to avoid any contact between the jack 36 and the assembly 34 of springs.
  • Each locking spring 72 is in the rest position and maintains the protuberance 70 in contact with the wall 66, as illustrated in figure 4 .
  • the feed device 38 does not feed the jack 36.
  • the rail 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 the passengers and / or goods present in the interior volume 18.
  • the upper chamber 52 of the jack 36 is then supplied by the supply device 38, so as to move the piston 50 downwards in the direction of 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, in the direction of the car 12.
  • the upper cylinder 68 slides along the first end 44 until canceling the movement between the first part 44 and the upper part 60 of the cylinder 48.
  • each locking spring 72 is in the compressed position.
  • the actuator 36 is then in the deployed configuration.
  • the cylinder 36 is supplied by the supply 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 a predetermined distance is reached between the car 14 and the chassis 28.
  • the predetermined distance between the car 14 and the chassis 28 is, for example, such that the height to the ground of the floor 22 of the car 14 is substantially equal to the height to the ground of the platform 12, that is to say that the floor 22 and platform 12 extend in the same horizontal plane.
  • the jack 36 is then fed by the feed device 38 so as to keep the distance between the frame 28 and the car 14 constant and to prevent the free movement of the assembly 34 of springs.
  • the jack 36 is not subjected to transverse forces due to the relative movements of the car 14 and of the bogie 16 because the ball 58 allows the free rotation of the first end 44 .
  • the door 20 is then open and the passengers and / or goods located in the interior volume 18 can then easily exit or be exited from the rail vehicle 10 through the door 20 in order to find themselves on the platform 12. And conversely passengers and / or goods initially located on the platform 12 can enter or be transported in the interior volume 18.
  • the cylinder 32 is then supplied by the supply device 38, so as to move the cylinder 48 along the rod 62, downwards, in the direction of the frame 28 until the second end 46 is no longer in contact. contact with the frame 28.
  • the return spring 55 then forces the piston 50 to slide in the cylinder 48, upwards, in the direction of the car 14.
  • the protuberance 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 protuberance 70 against the wall 66.
  • the locking system 56 therefore immobilizes the jack 36 in relation to the car 14.
  • the first end 44 and the upper part 60 of the cylinder 48 have a clearance.
  • the actuator 36 is then in the 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 the assembly 34 of springs is free to perform its function of suspension between the car 14 and the bogie 16.
  • the supply of the jack 36 by the supply device 30 begins before the stop of the rail vehicle 10, so that when the rail vehicle 10 is stopped, the actuator 36 is already in the deployed configuration and the floor 22 is already at platform 12 height.
  • 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 start of the third stage.

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

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 chassis and the car, a jack comprising two ends extending along the same axis and a device for supplying the jack.

Le document EP 3 254 924 décrit un tel système de suspension secondaire entre le châssis et la voiture.The document EP 3,254,924 describes such a secondary suspension system between the chassis and the car.

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 entry and exit of people 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 rail vehicle is at 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 parallel cylinder extending between the car and the bogie. The jack makes it possible to vary the distance between the bogie and the car, the height of the car being thus variable. This makes it possible in particular to reduce the vertical distance between the floor of the car and a platform.

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 is not entirely satisfactory. In fact, when the rail vehicle is in motion, the jack and, in particular, the joints of the jack 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 jack mechanically connecting the car and the bogie increases the stiffness of the system, thus 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 object of the invention is in particular to remedy these drawbacks by proposing a rail 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 selon la revendication 1.To this end, the subject of the invention is in particular a railway vehicle according to claim 1.

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 jack is thus able to bring, then to maintain, the car and the chassis at a constant distance, for example, chosen so that the height of the floor of the car when stationary in a station is substantially equal to the height of the platform from this station. When the rail vehicle is moving between two stations, the second end of the jack is free, the jack thus not undergoing any transverse forces due to relative movements between the car and the bogie and adding noticeably no additional stiffness to the secondary suspension system.

Un véhicule ferroviaire selon l'invention peut comporter en outre l'une ou plusieurs des caractéristiques des revendications 2 à 9.A rail vehicle according to the invention may further include one or more of the features of claims 2 to 9.

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 made with reference to the appended figures, among 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 rail vehicle according to the invention, the jack being in the retracted configuration,
  • the figure 3 is a schematic sectional view, along a vertical plane, of a secondary suspension system of a rail vehicle according to the invention, the jack being in the deployed configuration,
  • the figure 4 is a schematic sectional view, along a vertical plane, of a locking system of a rail vehicle according to the invention, the jack being in the retracted configuration,
  • the figure 5 is a schematic sectional view, along a vertical plane, of a locking system of a rail vehicle according to the invention, the jack being in the 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” are understood in general terms with respect to the usual directions of a railway 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 in a station is shown in 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 rail vehicle 10 is stopped alongside 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 rail vehicle 10 comprises at least one car 14, at least one bogie 16 carrying the car 14 and, advantageously, a link 17 arranged 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 exterior through at least one door 20. The interior volume 18 is in particular delimited by a lower floor 22, on which the passengers and / or goods move.

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 at one end of the car 14 and supports two adjacent cars 14 when the rail vehicle 10 includes several cars 14. According to a conventional embodiment, the or each car 14 is supported by two bogies 16 at 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 move in rotation on the bogie 16 by axles 26, a frame 28 and a secondary suspension system 30 arranged 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 run on rails 32 and thus allow the movement of the rail vehicle 10.

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 rail 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 "upper" are defined with respect to the direction of elevation.

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 deflections according to 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 function of suspension between the car 14 and the vehicle. bogie 16 and the positioning function according to the direction of elevation of the car 14 relative 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 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 in the figures 2 and 3 , the assembly 34 of springs comprises at least one internal spring 40 and one external 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 internal spring 40 and the external spring 42 are helical and coaxial springs, having as central axis the main axis X.

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 frame 28 and the car 14. They are, moreover, 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 internal spring 40 is less than the diameter of the external spring 42, so that the internal 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 internal spring 40 and the external spring 42 wind around the jack 36. The internal spring 40 and the external 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 performs a function of positioning the car 14 relative to the bogie 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 cylinder 36 extends along the main axis X. The cylinder 36 comprises a first end 44 and a second end 46 substantially aligned along the main axis X. The cylinder 36 further comprises a cylinder 48, a piston 50 separating the cylinder 48 into an upper chamber 52 and a lower 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 locking system 56 linked 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 allowing the jack 36 to be able to rotate 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 cylinder 36 then being said to be in the retracted configuration, and a so-called fixed position in which the second end 46 is in contact with the frame 28, the jack 36 then being said to be in the 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 cylinder 36 is only connected to the car 14 by the first end 44, as illustrated in the figure. 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 by the first end 44 and to the frame 28 by the second end 46, as illustrated in the figure. 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 part 59 and an upper part 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 integral with 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 hermetically separated chambers 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 hermetically passes through the lower part 59 of the cylinder 48 along the main axis X at the level of a passage opening 64. The rod 62 includes the second end 46. The second end 46 is located opposite the head 61 with respect 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 also 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 having the axis as its central axis. principal X.

Le ressort de rappel 55 est configuré pour contraindre le vérin 36 vers la configuration rétractée.The return spring 55 is configured to force the cylinder 36 towards 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 figure 2 , the return spring 55 is located in the lower chamber 54 and connects the head 61 to the lower part 59 of the cylinder 48. The return spring 55 forces the head 61 to a position remote from the lower part 59 of the cylinder 48. The rod 62 is advantageously inserted into the return spring 55, which limits the size of the cylinder 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 the figures. 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 ram 36 relative to the car 14 when the ram 36 is in the retracted configuration, as illustrated in the figure. 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 makes it possible to prevent 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 of 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 leave the cylinder 36 movable in rotation around the ball 58 when the cylinder 36 is in the deployed configuration, as illustrated 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 linked to the car 14 and to the frame 28, the jack 36 is liable to deviate from the direction of the main axis X because of any transverse relative movements between the car 14 and the bogie 16. The jack 36 being movable in rotation around the ball joint 58, the jack 36 is not subjected to 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 protuberance 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 protrudes from the outer face of the floor of the car 14 in the direction of 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 protrudes 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 preferably less 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 able to slide in the upper cylinder 68 along the main axis X. Thus the first end 44 is linked to the cylinder 48 via the locking system 56.

La protubérance 70 s'étend en saillie du cylindre supérieur 68 transversalement, selon un axe sensiblement orthogonal à l'axe principal X.The protrusion 70 protrudes from 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 protuberance 70 is of complementary shape with the wall 66. Advantageously, the protuberance 70 is of frustoconical shape, which allows 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 linked to the car 14 and to 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 protrusion 70 and the car 14 being less in the compressed position compared to the rest configuration. The locking spring 72 forces the protuberance 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 cylinder 36 is in the retracted configuration, the protuberance 70 cooperates with the wall 66 and rests on the latter, due to the gravity exerted on the cylinder 36, as illustrated in the figures. 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 protuberance 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 cylinder 36 is in the deployed configuration, the protuberance 70 is moved away from the wall 66, as illustrated in the figures. 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 movable in rotation around 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 supply device 38 is suitable for supplying the cylinder 36 with fluid, for example with oil, here having 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 feed device 38 is configured to control the movement of the piston 50 in the cylinder 48, when the cylinder 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 supply device 38 is in particular configured to control the movement of the piston 50 by supplying one of the upper 52 and lower 54 chambers 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 upper 52 and lower 54 chambers not supplied by the supply 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 figures 2 and 3 , the supply system 38 supplies 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 cylinder 36 is in the deployed configuration, the supply system 38 is then able to fill the upper chamber 52 in order to increase its volume so as to move the piston 50 in a direction in which the piston 50 moves away. of the car 14. The power supply 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 chassis 28. The link 17 is advantageously a metal chain comprising an assembly of links 78. The link 17 is configured to limit the distance between the car 14 and the chassis 28 in order to avoid the impact of the piston 50 against the lower part 59 of the cylinder 48, repeated shocks being able to lead to deterioration of the jack 36. That is to say that the link 17 is stretched, and therefore prevents any displacement of the car 14 with respect to the frame 28, before the piston 50 comes into contact with the lower part 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 cylinder 36 is in the deployed configuration, the supply system 38 is, moreover, 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 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 the upper chamber 52 and / or the lower chamber 54 with fluid. .

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, with the aid of the description of a method of circulation 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 travels 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 actuator 36 is then in the retracted configuration, as illustrated in 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.Car 14 and bogie 16 are connected by the set 34 of springs. The assembly 34 of springs allows a relative displacement between the car 14 and the bogie 16 and thus to damp 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 jack 36 relative to the car 14 in order to avoid free oscillations of the jack 36 around the ball joint 58 and thus to avoid any contact between the jack 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 protuberance 70 in contact with the wall 66, as illustrated in figure 4 .

Il existe alors un débattement entre la première extrémité 44 et la partie supérieure 60 du cylindre.There is then a clearance 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 rail 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 the 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 supplied by the supply device 38, so as to move the piston 50 downwards in the direction of 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, in the direction of 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 until canceling the movement between the first part 44 and the upper part 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 protuberance 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 actuator 36 is then in the 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 cylinder 36 is supplied by the supply 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 a predetermined distance is reached between the car 14 and the chassis 28. The predetermined distance between the car 14 and the chassis 28 is, for example, such that the height to the ground of the floor 22 of the car 14 is substantially equal to the height to the ground of the platform 12, that is to say that the floor 22 and 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 fed by the feed device 38 so as to keep the distance between the frame 28 and the car 14 constant 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 is not subjected to transverse forces due to the relative movements of the car 14 and of 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 open and the passengers and / or goods located in the interior volume 18 can then easily exit or be exited from the rail vehicle 10 through the door 20 in order to find themselves on the platform 12. And conversely passengers and / or goods initially located on the platform 12 can 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 have left and / or entered 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 supply device 38, so as to move the cylinder 48 along the rod 62, downwards, in the direction of the frame 28 until the second end 46 is no longer in contact. contact with the frame 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, in the direction of 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 protuberance 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 protuberance 70 against the wall 66. The locking system 56 therefore immobilizes the jack 36 in relation 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 part 60 of the cylinder 48 have a clearance.

Le vérin 36 est alors en configuration rétractée.The actuator 36 is then in the 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 d'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 the assembly 34 of springs is free to perform its function of suspension 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 supply device 30 begins before the stop of the rail vehicle 10, so that when the rail vehicle 10 is stopped, the actuator 36 is already in the deployed configuration and the floor 22 is already at platform 12 height.

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 start of the third stage.

Claims (9)

  1. A railway vehicle (10) comprising at least one car (14) and at least one bogie (16) carrying the car (14), the bogie (16) comprising a chassis (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 chassis (28) and the car (14);
    - a jack (36) comprising two ends (44, 46) extending along a same axis (X); and
    - a supply system (38) of the jack (36);
    the jack (36) being configured to go from a first so-called retracted configuration in which the jack (36) is only connected to the car (14) by 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 chassis (28) by the second end (16) of the jack (36), the power supply device (38) being configured, in the deployed configuration, to supply the jack (36) 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,
    characterized in that the first end (44) of the jack (36) is connected to the car (14) by a knuckle joint-type connection (58).
  2. The railway vehicle (10) according to claim 1, also comprising a blocking 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 jack (36) rotatable around the knuckle joint (58) when the jack (36) is in the deployed configuration.
  3. The railway vehicle (10) according to claim 2, wherein the blocking system (56) comprises:
    - an upper cylinder (68) fastened on the upper part (60) of the jack (36), the first end (44) of the jack (36) being able to slide in the upper cylinder (68);
    - at least one converging wall (66) protruding from the car (14) and defining a cavity (74), the knuckle joint (58) being situated in said cavity (74);
    - a protuberance (70) protruding transversely from the upper cylinder (68) and having a shape substantially complementary to the wall (66), the protuberance (70) being situated in the cavity (74);
    - at least one blocking spring (72) situated between the protuberance (70) and the car (14), each blocking spring (72) being able to go from a first idle position in which the protuberance (70) cooperates with the wall (66) when the jack (36) is in the retracted configuration, to a second compressed position in which the protuberance (70) is separated from the wall (66) when the jack (36) is in the deployed configuration.
  4. The railway vehicle (10) according to claim 3, wherein the protuberance (70) has a substantially frustoconical shape.
  5. The 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 an upper chamber (52) and a lower chamber (54), and in that the power supply device (38) of the jack (36) is configured to supply, in the deployed position, only one of the upper (52) and lower (54) chambers in order to move the car (14) away from the chassis (28) or keep the distance between the car (14) and the chassis (28) constant.
  6. The railway vehicle (10) according to claim 5, wherein the other of the upper (52) and lower (54) chambers is equipped with a return spring (55) that constrains the jack (36) toward the retracted configuration.
  7. The railway vehicle (10) according to any one of the preceding claims, further comprising a connection (17) arranged between the car (14) and the chassis (28) and configured to limit the separation between the car (14) and the chassis (28).
  8. The railway vehicle (10) according to any one of the preceding claims, comprising four jacks (36) situated in the four corners of the chassis (28).
  9. A traffic method of a railway vehicle (10) according to any one of claims 1 to 8, comprising the following steps:
    - travel of the railway vehicle (10), the jack (36) being in the retracted configuration;
    - stopping of the railway vehicle (10) at a platform (12), the jack (36) being in the deployed configuration and powered by the power 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)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19169267T PL3556634T3 (en) 2018-04-17 2019-04-15 Railway vehicle and associated circulation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1853342A FR3080077B1 (en) 2018-04-17 2018-04-17 RAILWAY VEHICLE AND ASSOCIATED CIRCULATION METHOD

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EP3556634A1 EP3556634A1 (en) 2019-10-23
EP3556634B1 true EP3556634B1 (en) 2021-02-24

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US (1) US11332169B2 (en)
EP (1) EP3556634B1 (en)
CN (1) CN110386163B (en)
CA (1) CA3040398A1 (en)
ES (1) ES2867302T3 (en)
FR (1) FR3080077B1 (en)
PL (1) PL3556634T3 (en)

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FR3080076B1 (en) * 2018-04-17 2020-09-18 Alstom Transp Tech RAILWAY VEHICLE AND ASSOCIATED CIRCULATION METHOD
CN110775092B (en) * 2019-11-20 2021-10-08 中车大连机车车辆有限公司 Pressure spring lifting device of locomotive bogie
CN112693489A (en) * 2021-02-24 2021-04-23 郑州铁路职业技术学院 Steering device of railway locomotive
CN112849193A (en) * 2021-02-24 2021-05-28 郑州铁路职业技术学院 Method for improving steering capacity of railway locomotive

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Also Published As

Publication number Publication date
CN110386163B (en) 2024-07-05
FR3080077A1 (en) 2019-10-18
EP3556634A1 (en) 2019-10-23
ES2867302T3 (en) 2021-10-20
CA3040398A1 (en) 2019-10-17
CN110386163A (en) 2019-10-29
US11332169B2 (en) 2022-05-17
FR3080077B1 (en) 2020-09-18
PL3556634T3 (en) 2021-08-02
US20190315381A1 (en) 2019-10-17

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