EP3254924A1 - Rail vehicle provided with a leveling and associated running method - Google Patents

Rail vehicle provided with a leveling and associated running method Download PDF

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Publication number
EP3254924A1
EP3254924A1 EP17175265.2A EP17175265A EP3254924A1 EP 3254924 A1 EP3254924 A1 EP 3254924A1 EP 17175265 A EP17175265 A EP 17175265A EP 3254924 A1 EP3254924 A1 EP 3254924A1
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EP
European Patent Office
Prior art keywords
cylinder
jack
car
piston
stop
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Granted
Application number
EP17175265.2A
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German (de)
French (fr)
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EP3254924B1 (en
Inventor
Sacheen Dausoa
Yves Longueville
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Alstom Transport Technologies SAS
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Alstom Transport Technologies SAS
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Publication of EP3254924A1 publication Critical patent/EP3254924A1/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
    • 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
    • B61F5/16—Centre bearings or other swivel connections between underframes and bolsters or 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
    • 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

Definitions

  • the document US 2015021445 describes a railway vehicle comprising a car and a bogie, a suspension spring extending between the car and the bogie.
  • a piston is able to raise or lower the low point of the spring connected to the bogie.
  • the height of the car is variable. This in particular reduces the vertical distance between the floor of the car and a dock.
  • the invention is intended to overcome this disadvantage by providing a leveling system easy to implement.
  • the invention particularly relates to a railway vehicle of the aforementioned type, wherein the secondary suspension system comprises a jack, provided with a piston extending at least partially between a high abutment integral with the car and a low abutment secured to the frame, and a cylinder supply device, the cylinder supply device being adapted to supply the cylinder so that the distance between the upper and lower stops is kept constant by the cylinder.
  • the cylinder thus keeps the frame and the car at a constant distance in the vertical direction, without depending in particular on the load of the vehicle.
  • the distance is, for example, chosen so that the height of the floor of the car stationary in a station is substantially equal to the height of the platform of this station.
  • 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 and at least one bogie 16 carrying the car 14.
  • the bogie 16 extends for example to one end of the car 14 and supports two adjacent cars.
  • the car 14 is supported by two bogies 16 at each of its ends.
  • the car 14 has an empty interior volume 18 configured to accommodate persons or goods to be transported.
  • the interior volume communicates with the outside by at least one door 19.
  • the interior volume 18 is defined in particular by a lower floor 20, on which people and / or goods evolve.
  • the bogie 16 comprises a frame 22 and a secondary suspension system 24 between the frame 22 and the car 14.
  • the secondary suspension system 24 makes it possible to take up the vertical deflections between the car 14 and the bogie 16.
  • the secondary suspension system makes it possible in particular to ensure both the suspension function between the car 14 and the bogie 16 and the function of the car. vertical positioning of the car 14 with respect to the station platform 12.
  • the secondary suspension system 24, shown in FIG. figure 2 comprises a spring assembly 26 mounted between the frame 22 and the car 14 and providing the suspension function and a jack 28 providing a vertical positioning function of the car 14 with respect to the station platform 12.
  • the secondary suspension system 24 further comprises a feed device 30 for the jack 28, an upper stop 32 secured to the car 14 and a lower stop 34 secured to the frame 22.
  • the upper stop 32 and the lower stop 34 are intended to limit the vertical movement of the jack 28.
  • the secondary suspension system 24 extends along a main axis X.
  • the main axis X is vertical.
  • the spring assembly 26 extends along the main axis X.
  • the spring assembly 26 comprises an internal spring 36 and an external spring 38.
  • the inner spring 36 and the outer spring 38 are helical and coaxial springs, the central axis being the main axis X.
  • the diameter of the inner spring 36 is smaller than the diameter of the outer spring 38, so that the inner spring 36 extends into the inner volume of the outer spring 38.
  • the inner spring 36 and the outer spring 38 have opposite winding directions.
  • the inner spring 36 and the outer spring 38 have, for example, a vertically defined height of between 270 mm and 275 mm.
  • the diameter of the inner spring 36 is substantially equal to 140 mm.
  • the diameter of the outer spring 38 is substantially equal to 270 mm.
  • the flexibility of the spring assembly 26 is approximately equal to 21 mm per 1000 daN, the flexibility being defined as the loss of height per unit of load.
  • the spring assembly 26 allows relative movement between the frame 22 and the car 14.
  • the low stop 34 extends along the main axis X between a first end 70, integral with the frame 22, and a second end 72, facing the upper stop 32.
  • the bottom stop 34 extends radially around the main axis X and at least partially in the internal volume of the internal spring 36.
  • the second end 72 has a support 74 of low stop.
  • the cylinder 28 extends between the car 14 and the bogie 16
  • the jack 28 is located inside the spring assembly 26 along the main axis X.
  • the jack 28 extends at least partially in the internal volume of the internal spring 36.
  • the cylinder 28 is, for example, hydraulic.
  • the jack 28 comprises, in a conventional manner, a cylinder 40 and a piston 42.
  • the cylinder 40 extends between a first end 44, integral with the car, and a second end 46, facing the bottom stop 34, along the main axis X.
  • the cylinder 40 is closed by the car 14 at its first end 44.
  • the upper stop 32 is here present at the second end 46 of the cylinder 40.
  • the upper stop 32 extends radially around the main axis X.
  • the upper stop 32 has an inner surface 62 partially closing the cylinder 40 and an outer surface 64 facing the bottom stop 34.
  • the upper stop 32 defines a passage hole 61, more particularly in its center.
  • the piston 42 is movable in the cylinder 40 and comprises a head 48 and a rod 50 integral with the head 48.
  • the piston 42 extends partially between the upper stop 32 and the lower stop 34.
  • the head 48 is able to slide in the cylinder 40.
  • the head 48 separates the cylinder 40 into two isolated chambers, namely an upper chamber 52 and a lower chamber 54.
  • the lower chamber 54 is partially delimited by the upper stop 32.
  • the head 48 comprises an upper end 56 facing the first end 44 and a lower end 58 facing the second end 46.
  • the lower end 58 is able to abut against the upper stop 32.
  • the rod 50 is adapted to pass through the upper stop 32 along the main axis X at the passage orifice 61 and comprises a free end 60 capable of being in contact with the lower stop 34.
  • the jack 28 is adapted to be deployed in a position of maximum vertical movement via the feeder 30, in which the lower end 58 comes into contact with the upper stop 32 and the free end 60 is in contact with the stop lower 34, more particularly at the level of the support 74 of low stop.
  • the upper stop 32 is provided, at the inner surface 62, with means 65 for damping the contacts between the lower end 58 and the upper stop 32, in particular when the piston 42 is in the deflection position. vertical maximum of the cylinder 28.
  • the head 48 is provided with means for damping the contacts between the lower end 58 and the upper stop 32, in particular when the jack 28 is in the vertical deflection position. maximum.
  • the outer surface 64 is provided with a damping device 66 configured to damp the contacts between the outer surface 64 and the lower stop 34.
  • the damping device 66 is elastic.
  • the vertical compression stiffness of the damping device 66 is for example approximately 70 to 100 daN / mm.
  • the damping device 66 and the abutment support 74 are aligned vertically, more particularly along the main axis X, and face each other, that is to say they delimit between them a space extending according to X.
  • the feed device 30 is capable of supplying the jack 28 with fluid, for example oil, having a pressure of between 50 bar and 150 bar.
  • the feeder 30 is configured to control the movement of the piston 42 in the cylinder 40.
  • the feed device 30 is in particular configured to control the displacement of the piston 42 in the maximum vertical displacement position of the jack 28 by creating a pressure difference between the upper chamber 52 and the lower chamber 54 to move the piston 42 so that it comes into contact with the lower stop 34 and the upper stop 32.
  • the supply device 30 comprises, for example, a tank (not shown) positioned at the car 14 and a supply duct 68 configured to supply fluid to the upper chamber 52 and the lower chamber 54.
  • the duct 68 connects the tank and the high rooms 52 and low 54.
  • the upper stop 32 and the lower stop 34 are rigid. They are for example made of steel.
  • the high stop 32 limits the vertical movement of the cylinder 28 when the piston is moved to the maximum vertical displacement position.
  • the upper stop 32 limits the movement of the cylinder 40 and the car 14 upwards, that is to say opposite to the lower stop 34.
  • the bottom stop 34 limits the vertical movement of the cylinder 28 when the piston is moved to the maximum vertical displacement position.
  • the low stop 34 limits the movement of the piston 42 downwards, that is to say the opposite of the car 14.
  • the railway vehicle 10 travels on a track 78 and away from the platform 12, for example more than 1 kilometer from the platform 12.
  • the feed device 30 allows relative movement between the frame 22 and the car 14 and the springs 36, 38 are free to play their suspension function.
  • the feed device 30 then feeds, for example, not the jack 28.
  • the piston 42 is, for example, substantially fully retracted inside the cylinder 40 and the distance between the car 14 and the chassis 22 varies, for example, according to the movements of the railway vehicle 10, that is to say of the set of springs 26, or according to possible contacts of the cylinder 28 with the lower stop 34.
  • the upper stop 32 more particularly the damping device 66, is able to come into contact with the lower stop support 74 following the movements of the car 14 relative to the frame 22.
  • the damping device 66 then allows in particular to limit the mechanical wear of the secondary suspension system 24.
  • the piston 42 is not held in abutment against the high and low stops. It is for example distant high and low stops along the X axis.
  • the feed device 30 feeds the jack 28 to maintain the piston 42 in a minimum vertical displacement position of the cylinder, also called the rest position, in which the piston 42 is substantially fully retracted. inside the cylinder 40.
  • the railway vehicle 10 stops at a station along a platform 12.
  • the jack 28 is then fed by the feeder 30, so as to keep the distance between the frame 22 and the car 14 constant and to prevent the movement of the springs 36, 38.
  • the jack 28 is pressurized so as to maintain the distance between the high stops 32 and low 34 constant and prevent the free movement of the set of springs 26.
  • the distance between the upper stops 32 and lower 34 is maintained substantially equal to the height of the rod 50 and is, for example, between 20 cm and 40 cm, preferably equal to 30 cm.
  • the feed device 30 feeds the jack 28, so as to move and maintain the piston 42 in the maximum vertical displacement position.
  • the piston is then moved downwards in the direction of the lower stop, so that the free end 60 comes into contact with the second end 72 of the lower stop, more particularly with the abutment support 74. Then, the cylinder 40 moves upwards, along the rod 50, until the upper stop 32 bears against the lower end 58 of the head 48 of the piston 42.
  • the cylinder 28 is then in the maximum vertical displacement position.
  • the head 48 is held in abutment against the upper stop 32 and the rod 50 is held in abutment against the lower stop 34.
  • the height between the car 14 and the frame 22 is then fixed and corresponds to the maximum vertical displacement of the jack 28.
  • the distance between the car 14 and the frame 22 is, for example, such that the floor height of the floor 20 of the car 14 is substantially equal to the height of the floor 12 of the platform, that is to say that the floor 20 and the platform 12 extend in the same horizontal plane.
  • the railway vehicle 10 starts from the station and the jack 28 is then powered by the feed device 30 or not, so as to allow a relative movement between the frame 22 and the car 14 and that the springs 36, 38 be free to play their suspension function.
  • the supply of the cylinder 28 by the feeder 30 begins before stopping the rail vehicle 10, so that at the end of the railway vehicle 10 the floor is already at dock height.
  • the upper stop 32 and / or the lower stop 34 are respectively part of the car 14 and / or the chassis 22.
  • the piston 42 of the cylinder 28 is integral with the lower stop 34 and comes into contact with the upper stop 32 when the cylinder 28 is supplied by the supply device 30.
  • the mounting of the jack is reversed and the cylinder 40 is for example integral with the frame, while the piston 42 moves towards the car 14 when it is powered by the feeder 30.
  • the cylinder 40 forms for example the low stop while the high stop is positioned at the level of the car 14 opposite the rod 50.
  • the upper stop 32 is formed by a part integral with the car 14 and is advantageously positioned inside the cylinder 40.
  • the piston 42 extends between the upper stop 32 and the lower stop 34.
  • a second embodiment of the invention is shown in figure 3 and will be described below.
  • a secondary suspension system 124 different from the secondary suspension system 24 shown above is used.
  • the secondary suspension system 124 is broadly similar to the secondary suspension system 24 and differs simply in that it comprises a different feed device 130 and a return spring 133 positioned within the lower chamber 54.
  • the power supply device 130 is configured to supply only one of the high and low chambers, namely the upper chamber 52 in the example shown in FIG. figure 3 .
  • the feed device 130 comprises a feed duct 68 configured to supply only the upper chamber 52.
  • the return spring 133 is configured to return the piston 42 to the minimum vertical displacement position, inside the cylinder 40, when the jack is not powered by the feeder 30.
  • the return spring 133 is positioned in the lower chamber between the second end 46 and the lower end 58.
  • the return spring when the feed device is configured to feed the lower chamber, the return spring is positioned in the upper chamber between the first end 44 and the upper end 56.
  • the return spring 133 makes it possible, for example, to keep the jack 28 in the position of minimum vertical displacement in which the piston 42 is substantially fully retracted inside the cylinder 40.
  • the upper stop 32, the lower stop 34 and the jack 28 when powered to be in its maximum deflection configuration, make it possible to ensure that the car is easily accessible. accessible from the wharf. This favors the movement of people with reduced mobility or the loading of bulky and / or heavy goods.
  • the secondary suspension systems 24, 124 provide a leveling system that is easy to implement and does not require feedback of the height of the floor of the car.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

L'invention concerne un véhicule ferroviaire comprenant au moins une voiture (14) et au moins un bogie portant la voiture (14). Le bogie comprend un châssis (22) et un système de suspension secondaire (24) entre le châssis (22) et la voiture (14). Le système de suspension secondaire (24) comprend un ensemble de ressort (26) monté entre le châssis (22) et la voiture (14). Le système de suspension secondaire (24) comprend un vérin (28), muni d'un piston (42) s'étendant au moins partiellement entre une butée haute (32) solidaire de la voiture (14) et une butée basse (34) solidaire du châssis (22), et un dispositif d'alimentation du vérin (30). Le dispositif d'alimentation du vérin est propre à alimenter le vérin (28) de sorte que la distance entre les butées haute (32) et basse (34) soit maintenue constante par le vérin (28).The invention relates to a railway vehicle comprising at least one car (14) and at least one bogie carrying the car (14). The bogie includes a frame (22) and a secondary suspension system (24) between the frame (22) and the car (14). The secondary suspension system (24) includes a spring assembly (26) mounted between the frame (22) and the car (14). The secondary suspension system (24) comprises a jack (28), provided with a piston (42) extending at least partially between an upper stop (32) integral with the car (14) and a lower stop (34). secured to the frame (22), and a supply device for the jack (30). The feed device of the jack is adapted to feed the jack (28) so that the distance between the upper stops (32) and lower (34) is kept constant by the jack (28).

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 ressort monté entre le châssis et la voiture.
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 frame and the car, the secondary suspension system comprising a spring assembly mounted between the frame and the car.

Afin de faciliter la montée et la descente de personnes et/ou de marchandise, il est avantageux de pouvoir régler la hauteur de la voiture, afin de l'adapter à celle du quai.In order to facilitate the ascent and descent of people and / or merchandise, it is advantageous to be able to adjust the height of the car, in order to adapt it to that of the dock.

Le document US 2015021445 décrit un véhicule ferroviaire comprenant une voiture et un bogie, un ressort de suspension s'étendant entre la voiture et le bogie. Un piston est apte à lever ou descendre le point bas du ressort relié au bogie. Par l'intermédiaire du ressort, la hauteur de la voiture est variable. Cela permet notamment de réduire la distance verticale entre le plancher de la voiture et un quai.The document US 2015021445 describes a railway vehicle comprising a car and a bogie, a suspension spring extending between the car and the bogie. A piston is able to raise or lower the low point of the spring connected to the bogie. Through the spring, the height of the car is variable. This in particular reduces the vertical distance between the floor of the car and a dock.

Cependant il convient alors de régler la hauteur de la voiture à chaque arrêt à quai. Cela nécessite par exemple un asservissement afin de connaître la hauteur actuelle de la voiture par rapport à la hauteur souhaitée, qui est notamment fonction de la masse des personnes et/ou de la marchandise à bord de la voiture et d'autres variables.However, it is advisable to adjust the height of the car at each stop at the dock. This requires, for example servo to know the current height of the car relative to the desired height, which depends in particular on the mass of people and / or the goods on board the car and other variables.

Ce système de nivellement est donc compliqué à mettre en oeuvre.This leveling system is therefore complicated to implement.

L'invention a notamment pour but de remédier à cet inconvénient en proposant un système de nivellement facile à mettre en oeuvre.The invention is intended to overcome this disadvantage by providing a leveling system easy to implement.

A cet effet, l'invention a notamment pour objet un véhicule ferroviaire du type précité, dans lequel le système de suspension secondaire comprend un vérin, muni d'un piston s'étendant au moins partiellement entre une butée haute solidaire de la voiture et une butée basse solidaire du châssis, et un dispositif d'alimentation du vérin, le dispositif d'alimentation du vérin étant propre à alimenter le vérin de sorte que la distance entre les butées haute et basse soit maintenue constante par le vérin.For this purpose, the invention particularly relates to a railway vehicle of the aforementioned type, wherein the secondary suspension system comprises a jack, provided with a piston extending at least partially between a high abutment integral with the car and a low abutment secured to the frame, and a cylinder supply device, the cylinder supply device being adapted to supply the cylinder so that the distance between the upper and lower stops is kept constant by the cylinder.

Le vérin maintient ainsi le châssis et la voiture à une distance constante dans la direction verticale, sans dépendre notamment de la charge du véhicule. La distance est, 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.The cylinder thus keeps the frame and the car at a constant distance in the vertical direction, without depending in particular on the load of the vehicle. The distance is, for example, chosen so that the height of the floor of the car stationary in a station is substantially equal to the height of the platform of this station.

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

  • la butée haute et la butée basse sont alignées verticalement,
  • le vérin comprend un cylindre, le 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 les chambres haute et basse,
  • le dispositif d'alimentation du vérin est propre à alimenter le vérin de sorte que le piston soit sensiblement compris entièrement dans le cylindre,
  • le vérin comprend un cylindre, le 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 seulement l'une des chambres haute et basse, l'autre des chambres haute et basse étant équipée d'un ressort de rappel configuré pour ramener le piston dans une position de repos à l'intérieur du cylindre, lorsque le vérin n'est pas alimenté par le dispositif d'alimentation,
  • le dispositif d'alimentation du vérin est propre à alimenter le vérin de sorte que le piston vienne en contact avec la butée basse et la butée haute, le vérin étant alors dans une position de débattement vertical maximal et la distance entre les butées haute et basse étant maintenue constante,
  • le vérin comprend un cylindre solidaire de la voiture, en ce que le piston comprend une tête et une tige s'étendant depuis la tête et traversant le cylindre, et en ce que le dispositif d'alimentation du vérin est propre à alimenter le vérin de sorte que la tête du piston soit maintenue en butée contre la butée haute et que la tige du piston soit maintenue en butée contre la butée basse,
  • le cylindre comprend une extrémité, la butée haute étant fixée à ladite extrémité, la butée haute étant munie d'un orifice de passage de la tige, et
  • le vérin est situé à l'intérieur de l'ensemble de ressort selon un axe principal de la suspension secondaire.
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 upper stop and the lower stop are aligned vertically,
  • the cylinder comprises a cylinder, the piston separating the cylinder into an upper chamber and a lower chamber, and in that the cylinder supply device is configured to feed the upper and lower chambers,
  • the feed device of the jack is adapted to feed the jack so that the piston is substantially completely comprised in the cylinder,
  • the cylinder comprises a cylinder, the piston separating the cylinder into an upper chamber and a lower chamber, and in that the cylinder supply device is configured to supply only one of the high and low chambers, the other of the chambers high and low being equipped with a return spring configured to return the piston to a rest position inside the cylinder, when the cylinder is not powered by the supply device,
  • the feed device of the jack is adapted to feed the jack so that the piston comes into contact with the lower stop and the upper stop, the jack then being in a position of maximum vertical displacement and the distance between the high and low stops being kept constant,
  • the cylinder comprises a cylinder integral with the car, in that the piston comprises a head and a rod extending from the head and passing through the cylinder, and in that the cylinder supply device is adapted to feed the cylinder of so that the piston head is held in abutment against the upper stop and that the piston rod is held in abutment against the lower stop,
  • the cylinder comprises one end, the upper stop being fixed to said end, the upper stop being provided with a passage opening of the rod, and
  • the jack is located inside the spring assembly along a main axis of the secondary suspension.

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 alimenté par le dispositif d'alimentation, de sorte à permettre un déplacement relatif entre le châssis et la voiture, et
  • arrêt du véhicule ferroviaire à un quai, le vérin étant alimenté par le dispositif d'alimentation, de sorte à maintenir constante la distance entre le châssis et la voiture.
The invention also relates to a method for circulating a railway vehicle as defined above, comprising the following steps:
  • circulation of the rail vehicle, the cylinder being powered by the feed device, so as to allow a relative movement between the frame and the car, and
  • stopping the railway vehicle at a platform, the cylinder being powered by the supply device, so as to maintain constant distance between the frame and the car.

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 d'un véhicule ferroviaire à l'arrêt à une station selon un premier exemple de réalisation de l'invention,
  • la figure 2 est une vue schématique en coupe selon un plan vertical d'un système de suspension secondaire du véhicule ferroviaire de la figure 1, conforme à un premier mode de réalisation de l'invention, et
  • la figure 3 est une vue analogue à la figure 2 d'un système de suspension secondaire conforme à un deuxième mode de réalisation de l'invention.
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 view of a stationary railway vehicle at a station according to a first embodiment of the invention,
  • the figure 2 is a schematic sectional view along a vertical plane of a secondary suspension system of the railway vehicle of the figure 1 according to a first embodiment of the invention, and
  • the figure 3 is a view similar to the figure 2 a secondary suspension system according to a second embodiment of the invention.

Les termes « vertical » et « horizontal » s'entendent de manière générale par rapport aux directions usuelles d'un véhicule ferroviaire circulant sur des rails.The terms "vertical" and "horizontal" generally refer to the usual directions of a rail vehicle traveling on 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 et au moins un bogie 16 portant la voiture 14.The railway vehicle 10 comprises at least one car 14 and at least one bogie 16 carrying the car 14.

Le bogie 16 s'étend par exemple à une extrémité de la voiture 14 et supporte deux voitures adjacentes.The bogie 16 extends for example to one end of the car 14 and supports two adjacent cars.

Selon un mode de réalisation conventionnel, la voiture 14 est supportée par deux bogies 16 à chacune de ses extrémités.According to a conventional embodiment, the car 14 is supported by two bogies 16 at each of its ends.

La voiture 14 présente un volume intérieur 18 vide configuré pour recevoir des personnes ou des biens à transporter.The car 14 has an empty interior volume 18 configured to accommodate persons or goods to be transported.

Le volume intérieur 18 communique avec l'extérieur par au moins une porte 19.The interior volume communicates with the outside by at least one door 19.

Le volume intérieur 18 est notamment délimité par un plancher inférieur 20, sur lequel évolue les personnes et/ou les marchandises.The interior volume 18 is defined in particular by a lower floor 20, on which people and / or goods evolve.

Le bogie 16 comprend un châssis 22 et un système de suspension secondaire 24 entre le châssis 22 et la voiture 14.The bogie 16 comprises a frame 22 and a secondary suspension system 24 between the frame 22 and the car 14.

Le système de suspension secondaire 24 permet de reprendre les débattements verticaux entre la voiture 14 et le bogie 16. Le système de suspension secondaire permet notamment d'assurer à la fois la fonction de suspension entre la voiture 14 et le bogie 16 et la fonction de positionnement vertical de la voiture 14 par rapport au quai de gare 12.The secondary suspension system 24 makes it possible to take up the vertical deflections between the car 14 and the bogie 16. The secondary suspension system makes it possible in particular to ensure both the suspension function between the car 14 and the bogie 16 and the function of the car. vertical positioning of the car 14 with respect to the station platform 12.

A cet effet, le système de suspension secondaire 24, représenté à la figure 2, comprend un ensemble 26 de ressort monté entre le châssis 22 et la voiture 14 et assurant la fonction de suspension et un vérin 28 assurant une fonction de positionnement vertical de la voiture 14 par rapport au quai de gare 12.For this purpose, the secondary suspension system 24, shown in FIG. figure 2 , comprises a spring assembly 26 mounted between the frame 22 and the car 14 and providing the suspension function and a jack 28 providing a vertical positioning function of the car 14 with respect to the station platform 12.

Le système de suspension secondaire 24 comprend en outre un dispositif d'alimentation 30 du vérin 28, une butée haute 32 solidaire de la voiture 14 et une butée basse 34 solidaire du châssis 22.The secondary suspension system 24 further comprises a feed device 30 for the jack 28, an upper stop 32 secured to the car 14 and a lower stop 34 secured to the frame 22.

La butée haute 32 et la butée basse 34 sont destinées à limiter le débattement vertical du vérin 28.The upper stop 32 and the lower stop 34 are intended to limit the vertical movement of the jack 28.

Le système de suspension secondaire 24 s'étend selon un axe principal X.The secondary suspension system 24 extends along a main axis X.

L'axe principal X est vertical.The main axis X is vertical.

L'ensemble 26 de ressort s'étend selon l'axe principal X.The spring assembly 26 extends along the main axis X.

Selon le mode de réalisation représenté sur les figures, l'ensemble 26 de ressort comprend un ressort interne 36 et un ressort externe 38.According to the embodiment shown in the figures, the spring assembly 26 comprises an internal spring 36 and an external spring 38.

Le ressort interne 36 et le ressort externe 38 sont des ressorts hélicoïdaux et coaxiaux, ayant pour axe central l'axe principal X.The inner spring 36 and the outer spring 38 are helical and coaxial springs, the central axis being the main axis X.

Ils s'étendent chacun entre le châssis 22 et la voiture 14. Ils sont, en outre, solidaires du châssis 22 et de la voiture 14.They extend each between the frame 22 and the car 14. They are further secured to the frame 22 and the car 14.

Le diamètre du ressort interne 36 est inférieur au diamètre du ressort externe 38, de sorte que le ressort interne 36 s'étend dans le volume interne du ressort externe 38.The diameter of the inner spring 36 is smaller than the diameter of the outer spring 38, so that the inner spring 36 extends into the inner volume of the outer spring 38.

Le ressort interne 36 et le ressort externe 38 ont des sens d'enroulement opposés.The inner spring 36 and the outer spring 38 have opposite winding directions.

Lorsque la voiture 14 est vide, le ressort interne 36 et le ressort externe 38 ont, par exemple, une hauteur définie verticalement comprise entre 270 mm et 275 mm.When the car 14 is empty, the inner spring 36 and the outer spring 38 have, for example, a vertically defined height of between 270 mm and 275 mm.

Le diamètre du ressort interne 36 est sensiblement égal à 140 mm. Le diamètre du ressort externe 38 est sensiblement égal à 270 mm.The diameter of the inner spring 36 is substantially equal to 140 mm. The diameter of the outer spring 38 is substantially equal to 270 mm.

La flexibilité de l'ensemble 26 de ressort est environ égale à 21 mm pour 1000 daN, la flexibilité étant définie comme la perte de hauteur par unité de charge.The flexibility of the spring assembly 26 is approximately equal to 21 mm per 1000 daN, the flexibility being defined as the loss of height per unit of load.

L'ensemble 26 de ressort permet un déplacement relatif entre le châssis 22 et la voiture 14.The spring assembly 26 allows relative movement between the frame 22 and the car 14.

La butée basse 34 s'étend selon l'axe principal X entre une première extrémité 70, solidaire du châssis 22, et une deuxième extrémité 72, en regard de la butée haute 32.The low stop 34 extends along the main axis X between a first end 70, integral with the frame 22, and a second end 72, facing the upper stop 32.

La butée basse 34 s'étend radialement autour de l'axe principal X et au moins partiellement dans le volume interne du ressort interne 36.The bottom stop 34 extends radially around the main axis X and at least partially in the internal volume of the internal spring 36.

La deuxième extrémité 72 présente un appui 74 de butée basse.The second end 72 has a support 74 of low stop.

Le vérin 28 s'étend entre la voiture 14 et le bogie 16The cylinder 28 extends between the car 14 and the bogie 16

Le vérin 28 est situé à l'intérieur de l'ensemble de ressort 26 selon l'axe principal X. Le vérin 28 s'étend au moins partiellement dans le volume intérieur du ressort interne 36.The jack 28 is located inside the spring assembly 26 along the main axis X. The jack 28 extends at least partially in the internal volume of the internal spring 36.

Le vérin 28 est, par exemple, hydraulique.The cylinder 28 is, for example, hydraulic.

Le vérin 28 comprend, de manière classique, un cylindre 40 et un piston 42.The jack 28 comprises, in a conventional manner, a cylinder 40 and a piston 42.

Le cylindre 40 s'étend entre une première extrémité 44, solidaire de la voiture, et une deuxième extrémité 46, en regard de la butée basse 34, selon l'axe principal X.The cylinder 40 extends between a first end 44, integral with the car, and a second end 46, facing the bottom stop 34, along the main axis X.

Le cylindre 40 est fermé par la voiture 14 en sa première extrémité 44.The cylinder 40 is closed by the car 14 at its first end 44.

La butée haute 32 est ici présente à la deuxième extrémité 46 du cylindre 40.The upper stop 32 is here present at the second end 46 of the cylinder 40.

La butée haute 32 s'étend radialement autour de l'axe principale X.The upper stop 32 extends radially around the main axis X.

La butée haute 32 présente une surface interne 62 fermant partiellement le cylindre 40 et une surface externe 64 en regard de la butée basse 34.The upper stop 32 has an inner surface 62 partially closing the cylinder 40 and an outer surface 64 facing the bottom stop 34.

La butée haute 32 définit un orifice 61 de passage, plus particulièrement en son centre.The upper stop 32 defines a passage hole 61, more particularly in its center.

Le piston 42 est mobile dans le cylindre 40 et comprend une tête 48 et une tige 50 solidaire de la tête 48.The piston 42 is movable in the cylinder 40 and comprises a head 48 and a rod 50 integral with the head 48.

Le piston 42 s'étend partiellement entre la butée haute 32 et la butée basse 34. La tête 48 est apte à coulisser dans le cylindre 40.The piston 42 extends partially between the upper stop 32 and the lower stop 34. The head 48 is able to slide in the cylinder 40.

La tête 48 sépare le cylindre 40 en deux chambres isolées, à savoir une chambre haute 52 et une chambre basse 54.The head 48 separates the cylinder 40 into two isolated chambers, namely an upper chamber 52 and a lower chamber 54.

La chambre basse 54 est partiellement délimitée par la butée haute 32.The lower chamber 54 is partially delimited by the upper stop 32.

La tête 48 comprend une extrémité haute 56 en regard de la première extrémité 44 et une extrémité basse 58 en regard de la deuxième extrémité 46.The head 48 comprises an upper end 56 facing the first end 44 and a lower end 58 facing the second end 46.

L'extrémité basse 58 est apte à venir en butée contre la butée haute 32.The lower end 58 is able to abut against the upper stop 32.

La tige 50 est propre à traverser la butée haute 32 suivant l'axe principal X au niveau de l'orifice 61 de passage et comprend une extrémité libre 60 apte à être en contact avec la butée basse 34.The rod 50 is adapted to pass through the upper stop 32 along the main axis X at the passage orifice 61 and comprises a free end 60 capable of being in contact with the lower stop 34.

Le vérin 28 est propre à être déployé dans une position de débattement vertical maximal via le dispositif d'alimentation 30, dans laquelle l'extrémité basse 58 entre en contact avec la butée haute 32 et l'extrémité libre 60 est en contact avec la butée basse 34, plus particulièrement au niveau de l'appui 74 de butée basse.The jack 28 is adapted to be deployed in a position of maximum vertical movement via the feeder 30, in which the lower end 58 comes into contact with the upper stop 32 and the free end 60 is in contact with the stop lower 34, more particularly at the level of the support 74 of low stop.

Avantageusement, la butée haute 32 est munie, au niveau de la surface interne 62, d'un moyen 65 d'amortissement des contacts entre l'extrémité basse 58 et la butée haute 32, notamment lorsque le piston 42 est dans la position de débattement vertical maximal du vérin 28.Advantageously, the upper stop 32 is provided, at the inner surface 62, with means 65 for damping the contacts between the lower end 58 and the upper stop 32, in particular when the piston 42 is in the deflection position. vertical maximum of the cylinder 28.

En variante ou additionnellement, la tête 48, plus particulièrement l'extrémité basse 58, est munie de moyen d'amortissement des contacts entre l'extrémité basse 58 et la butée haute 32, notamment lorsque le vérin 28 est dans la position de débattement vertical maximal.Alternatively or additionally, the head 48, more particularly the lower end 58, is provided with means for damping the contacts between the lower end 58 and the upper stop 32, in particular when the jack 28 is in the vertical deflection position. maximum.

Avantageusement, la surface externe 64 est munie d'un dispositif d'amortissement 66 configuré pour amortir les contacts entre la surface externe 64 et la butée basse 34. Le dispositif d'amortissement 66 est élastique. La rigidité verticale de compression du dispositif d'amortissement 66 est par exemple environ de 70 à 100 daN/mm.Advantageously, the outer surface 64 is provided with a damping device 66 configured to damp the contacts between the outer surface 64 and the lower stop 34. The damping device 66 is elastic. The vertical compression stiffness of the damping device 66 is for example approximately 70 to 100 daN / mm.

Le dispositif d'amortissement 66 et l'appui de butée basse 74 sont alignés verticalement, plus particulièrement suivant l'axe principal X, et se font face, c'est-à-dire qu'ils délimitent entre eux un espace s'étendant selon X.The damping device 66 and the abutment support 74 are aligned vertically, more particularly along the main axis X, and face each other, that is to say they delimit between them a space extending according to X.

Le dispositif d'alimentation 30 est apte à alimenter le vérin 28 en fluide, par exemple en huile, ayant ici une pression comprise entre 50 bars et 150 bars.The feed device 30 is capable of supplying the jack 28 with fluid, for example oil, having a pressure of between 50 bar and 150 bar.

Le dispositif d'alimentation 30 est configuré pour commander le déplacement du piston 42 dans le cylindre 40.The feeder 30 is configured to control the movement of the piston 42 in the cylinder 40.

Le dispositif d'alimentation 30 est notamment configuré pour commander le déplacement du piston 42 dans la position de débattement vertical maximal du vérin 28 en créant une différence de pression entre la chambre haute 52 et la chambre basse 54 pour déplacer le piston 42 afin qu'il entre en contact avec la butée basse 34 et la butée haute 32.The feed device 30 is in particular configured to control the displacement of the piston 42 in the maximum vertical displacement position of the jack 28 by creating a pressure difference between the upper chamber 52 and the lower chamber 54 to move the piston 42 so that it comes into contact with the lower stop 34 and the upper stop 32.

Le dispositif d'alimentation 30 comprend, par exemple, un réservoir (non représenté) positionné au niveau de la voiture 14 et un conduit d'alimentation 68 configuré pour alimenter en fluide la chambre haute 52 et la chambre basse 54.The supply device 30 comprises, for example, a tank (not shown) positioned at the car 14 and a supply duct 68 configured to supply fluid to the upper chamber 52 and the lower chamber 54.

Le conduit 68 relie le réservoir et les chambres haute 52 et basse 54.The duct 68 connects the tank and the high rooms 52 and low 54.

La butée haute 32 et la butée basse 34 sont rigides. Elles sont par exemple réalisées en acier.The upper stop 32 and the lower stop 34 are rigid. They are for example made of steel.

La butée haute 32 vient limiter le débattement vertical du vérin 28 lorsque le piston est déplacé dans la position de débattement vertical maximal. La butée haute 32 limite le déplacement du cylindre 40 et de la voiture 14 vers le haut, c'est-à-dire à l'opposé de la butée basse 34.The high stop 32 limits the vertical movement of the cylinder 28 when the piston is moved to the maximum vertical displacement position. The upper stop 32 limits the movement of the cylinder 40 and the car 14 upwards, that is to say opposite to the lower stop 34.

La butée basse 34 vient limiter le débattement vertical du vérin 28 lorsque le piston est déplacé dans la position de débattement vertical maximal. La butée basse 34 limite le déplacement du piston 42 vers le bas, c'est-à-dire à l'opposé de la voiture 14.The bottom stop 34 limits the vertical movement of the cylinder 28 when the piston is moved to the maximum vertical displacement position. The low stop 34 limits the movement of the piston 42 downwards, that is to say the opposite of the car 14.

Le fonctionnement du système de suspension secondaire 24 et notamment du vérin 28 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 24 and in particular the cylinder 28 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 une voie 78 et à distance du quai 12, par exemple à plus de 1 kilomètre du quai 12.In a first step, the railway vehicle 10 travels on a track 78 and away from the platform 12, for example more than 1 kilometer from the platform 12.

Le dispositif d'alimentation 30 permet un déplacement relatif entre le châssis 22 et la voiture 14 et les ressorts 36, 38 sont libres de jouer leur fonction de suspension.The feed device 30 allows relative movement between the frame 22 and the car 14 and the springs 36, 38 are free to play their suspension function.

Le dispositif d'alimentation 30 n'alimente alors, par exemple, pas le vérin 28.The feed device 30 then feeds, for example, not the jack 28.

Le piston 42 est, par exemple, sensiblement entièrement rentré à l'intérieur du cylindre 40 et la distance entre la voiture 14 et le châssis 22 varie, par exemple, selon les mouvements du véhicule ferroviaire 10, c'est-à-dire de l'ensemble de ressorts 26, ou selon les éventuels contacts du vérin 28 avec la butée basse 34.The piston 42 is, for example, substantially fully retracted inside the cylinder 40 and the distance between the car 14 and the chassis 22 varies, for example, according to the movements of the railway vehicle 10, that is to say of the set of springs 26, or according to possible contacts of the cylinder 28 with the lower stop 34.

Dans cette première étape, la butée haute 32, plus particulièrement le dispositif d'amortissement 66, est propre à venir en contact avec l'appui de butée basse 74 suivant les mouvements de la voiture 14 par rapport au châssis 22. Le dispositif d'amortissement 66 permet alors notamment de limiter l'usure mécanique du système de suspension secondaire 24.In this first step, the upper stop 32, more particularly the damping device 66, is able to come into contact with the lower stop support 74 following the movements of the car 14 relative to the frame 22. The damping device 66 then allows in particular to limit the mechanical wear of the secondary suspension system 24.

En d'autres termes, lors de la première étape, le piston 42 n'est pas maintenu en butée contre les butées haute et basse. II est par exemple distant des butées haute et basse suivant l'axe X.In other words, during the first step, the piston 42 is not held in abutment against the high and low stops. It is for example distant high and low stops along the X axis.

En variante, lors de la première étape, le dispositif d'alimentation 30 alimente le vérin 28 pour maintenir le piston 42 dans une position de débattement vertical minimal du vérin, également appelée position de repos, dans laquelle le piston 42 est sensiblement entièrement rentré à l'intérieur du cylindre 40.Alternatively, during the first step, the feed device 30 feeds the jack 28 to maintain the piston 42 in a minimum vertical displacement position of the cylinder, also called the rest position, in which the piston 42 is substantially fully retracted. inside the cylinder 40.

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.

Le vérin 28 est alors alimenté par le dispositif d'alimentation 30, de sorte à maintenir constante la distance entre le châssis 22 et la voiture 14 et à empêcher le mouvement des ressorts 36, 38. En d'autres termes, le vérin 28 est mis sous pression de sorte à maintenir la distance entre les butées haute 32 et basse 34 constante et à empêcher le libre mouvement de l'ensemble de ressorts 26.The jack 28 is then fed by the feeder 30, so as to keep the distance between the frame 22 and the car 14 constant and to prevent the movement of the springs 36, 38. In other words, the jack 28 is pressurized so as to maintain the distance between the high stops 32 and low 34 constant and prevent the free movement of the set of springs 26.

La distance entre les butées haute 32 et basse 34 est maintenue sensiblement égale à la hauteur de la tige 50 et est, par exemple, comprise entre 20 cm et 40 cm, de préférence égale à 30 cm.The distance between the upper stops 32 and lower 34 is maintained substantially equal to the height of the rod 50 and is, for example, between 20 cm and 40 cm, preferably equal to 30 cm.

Plus précisément, le dispositif d'alimentation 30 alimente le vérin 28, de sorte à déplacer et à maintenir le piston 42 dans la position de débattement vertical maximal.More specifically, the feed device 30 feeds the jack 28, so as to move and maintain the piston 42 in the maximum vertical displacement position.

Le piston est alors déplacé vers le bas en direction de la butée basse, de sorte que l'extrémité libre 60 entre en contact avec la deuxième extrémité 72 de la butée basse, plus particulièrement avec l'appui de butée basse 74. Puis, le cylindre 40 se déplace vers le haut, le long de la tige 50, jusqu'à ce que la butée haute 32 vienne en appui contre l'extrémité basse 58 de la tête 48 du piston 42.The piston is then moved downwards in the direction of the lower stop, so that the free end 60 comes into contact with the second end 72 of the lower stop, more particularly with the abutment support 74. Then, the cylinder 40 moves upwards, along the rod 50, until the upper stop 32 bears against the lower end 58 of the head 48 of the piston 42.

Le vérin 28 est alors en position de débattement vertical maximal. La tête 48 est maintenue en butée contre la butée haute 32 et la tige 50 est maintenue en butée contre la butée basse 34. La hauteur entre la voiture 14 et le châssis 22 est alors fixe et correspond au débattement verticale maximal du vérin 28.The cylinder 28 is then in the maximum vertical displacement position. The head 48 is held in abutment against the upper stop 32 and the rod 50 is held in abutment against the lower stop 34. The height between the car 14 and the frame 22 is then fixed and corresponds to the maximum vertical displacement of the jack 28.

La distance entre la voiture 14 et le châssis 22 est, par exemple, telle que la hauteur au sol du plancher 20 de la voiture 14 est sensiblement égale à la hauteur au sol du quai 12, c'est-à-dire que le plancher 20 et le quai 12 s'étendent dans un même plan horizontal.The distance between the car 14 and the frame 22 is, for example, such that the floor height of the floor 20 of the car 14 is substantially equal to the height of the floor 12 of the platform, that is to say that the floor 20 and the platform 12 extend in the same horizontal plane.

Enfin, le véhicule ferroviaire 10 démarre de la station et le vérin 28 est alors alimenté par le dispositif d'alimentation 30 ou non, de sorte à permettre un déplacement relatif entre le châssis 22 et la voiture 14 et à ce que les ressorts 36, 38 soient libres de jouer leur fonction de suspension.Finally, the railway vehicle 10 starts from the station and the jack 28 is then powered by the feed device 30 or not, so as to allow a relative movement between the frame 22 and the car 14 and that the springs 36, 38 be free to play their suspension function.

En variante, l'alimentation du vérin 28 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 plancher est déjà à hauteur de quai.Alternatively, the supply of the cylinder 28 by the feeder 30 begins before stopping the rail vehicle 10, so that at the end of the railway vehicle 10 the floor is already at dock height.

En variante, la butée haute 32 et/ou la butée basse 34 font partie respectivement de la voiture 14 et/ou du châssis 22.Alternatively, the upper stop 32 and / or the lower stop 34 are respectively part of the car 14 and / or the chassis 22.

Alternativement, le piston 42 du vérin 28 est solidaire de la butée basse 34 et entre en contact avec la butée haute 32 lorsque le vérin 28 est alimenté par le dispositif d'alimentation 30.Alternatively, the piston 42 of the cylinder 28 is integral with the lower stop 34 and comes into contact with the upper stop 32 when the cylinder 28 is supplied by the supply device 30.

Alternativement, le montage du vérin est inversé et le cylindre 40 est par exemple solidaire du châssis, tandis que le piston 42 se déplace en direction de la voiture 14 lorsqu'il est alimenté par le dispositif d'alimentation 30. Dans cette variante, le cylindre 40 forme par exemple la butée basse tandis que la butée haute est positionnée au niveau de la voiture 14 en regard de la tige 50.Alternatively, the mounting of the jack is reversed and the cylinder 40 is for example integral with the frame, while the piston 42 moves towards the car 14 when it is powered by the feeder 30. In this variant, the cylinder 40 forms for example the low stop while the high stop is positioned at the level of the car 14 opposite the rod 50.

Alternativement, la butée haute 32 est formée par une pièce solidaire à la voiture 14 et est avantageusement positionnée à l'intérieur du cylindre 40.Alternatively, the upper stop 32 is formed by a part integral with the car 14 and is advantageously positioned inside the cylinder 40.

Alternativement, le piston 42 s'étend entre la butée haute 32 et la butée basse 34.Alternatively, the piston 42 extends between the upper stop 32 and the lower stop 34.

Un deuxième mode de réalisation de l'invention est représenté à la figure 3 et sera décrit ci-après. Dans le deuxième mode de réalisation de l'invention, un système de suspension secondaire 124, différent du système de suspension secondaire 24 présenté ci-dessus est utilisé.A second embodiment of the invention is shown in figure 3 and will be described below. In the second embodiment of the invention, a secondary suspension system 124 different from the secondary suspension system 24 shown above is used.

Par la suite, seules les différences entre le système de suspension secondaire 124 et le système de suspension secondaire 24 seront présentées et les éléments similaires ne seront pas à nouveau présentés et porteront les mêmes références.Subsequently, only the differences between the secondary suspension system 124 and the secondary suspension system 24 will be presented and similar elements will not be re-presented and will have the same references.

Le système de suspension secondaire 124 est globalement similaire au système de suspension secondaire 24 et diffère simplement en ce qu'il comprend un dispositif d'alimentation 130 différent et un ressort de rappel 133 positionné à l'intérieur de la chambre basse 54.The secondary suspension system 124 is broadly similar to the secondary suspension system 24 and differs simply in that it comprises a different feed device 130 and a return spring 133 positioned within the lower chamber 54.

Le dispositif d'alimentation 130 est configuré pour alimenter seulement l'une des chambres haute et basse, à savoir la chambre haute 52 dans l'exemple présenté à la figure 3.The power supply device 130 is configured to supply only one of the high and low chambers, namely the upper chamber 52 in the example shown in FIG. figure 3 .

Le dispositif d'alimentation 130 comprend un conduit d'alimentation 68 configuré pour alimenter uniquement la chambre haute 52.The feed device 130 comprises a feed duct 68 configured to supply only the upper chamber 52.

Le ressort de rappel 133 est configuré pour ramener le piston 42 dans la position de débattement vertical minimal, à l'intérieur du cylindre 40, lorsque le vérin n'est pas alimenté par le dispositif d'alimentation 30.The return spring 133 is configured to return the piston 42 to the minimum vertical displacement position, inside the cylinder 40, when the jack is not powered by the feeder 30.

Le ressort de rappel 133 est positionné dans la chambre basse entre la deuxième extrémité 46 et l'extrémité basse 58.The return spring 133 is positioned in the lower chamber between the second end 46 and the lower end 58.

En variante, lorsque le dispositif d'alimentation est configuré pour alimenter la chambre basse, le ressort de rappel est positionné dans la chambre haute entre la première extrémité 44 et l'extrémité haute 56.In a variant, when the feed device is configured to feed the lower chamber, the return spring is positioned in the upper chamber between the first end 44 and the upper end 56.

Le ressort de rappel 133 permet, par exemple, de maintenir le vérin 28 dans la position de débattement vertical minimal dans laquelle le piston 42 est sensiblement rentré entièrement à l'intérieur du cylindre 40.The return spring 133 makes it possible, for example, to keep the jack 28 in the position of minimum vertical displacement in which the piston 42 is substantially fully retracted inside the cylinder 40.

Dans les deux modes de réalisation de l'invention, la butée haute 32, la butée basse 34 et le vérin 28, lorsqu'il est alimenté afin d'être dans sa configuration de débattement maximal, permettent d'assurer que la voiture soit facilement accessible à partir du quai. Cela favorise notamment le déplacement des personnes à mobilité réduite ou le chargement de marchandises encombrantes et/ou lourdes.In both embodiments of the invention, the upper stop 32, the lower stop 34 and the jack 28, when powered to be in its maximum deflection configuration, make it possible to ensure that the car is easily accessible. accessible from the wharf. This favors the movement of people with reduced mobility or the loading of bulky and / or heavy goods.

La butée haute 32, la butée basse 34 et le vérin 28, lorsqu'il est alimenté afin d'être dans la position de débattement maximal, forment alors un ensemble non déformable de hauteur constante. En effet, le piston 42 est alors en contact avec la butée haute 32 et la butée basse 34 et forment avec les butées haute et basse un ensemble rigide.The upper stop 32, the lower stop 34 and the jack 28, when fed to be in the maximum deflection position, then form a non-deformable set of constant height. Indeed, the piston 42 is then in contact with the upper stop 32 and the lower stop 34 and form with the upper and lower stops a rigid assembly.

Les systèmes de suspension secondaire 24, 124 assurent un système de nivellement facile à mettre en oeuvre et ne nécessitant pas de rétrocontrôle de la hauteur du plancher de la voiture.The secondary suspension systems 24, 124 provide a leveling system that is easy to implement and does not require feedback of the height of the floor of the car.

Les modes de réalisation décrits ci-dessus sont propres à être combinés entre eux pour donner lieu à d'autres modes de réalisation de l'invention.The embodiments described above are capable of being combined with one another to give rise to other embodiments of the invention.

Claims (10)

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 (22), et - un système de suspension secondaire (24) entre le châssis (22) et la voiture (14), le système de suspension secondaire (24) comprenant un ensemble de ressort (26) monté entre le châssis (22) et la voiture (14), caractérisé en ce que le système de suspension secondaire (24) comprend un vérin (28), muni d'un piston (42) s'étendant au moins partiellement entre une butée haute (32) solidaire de la voiture (14) et une butée basse (34) solidaire du châssis (22), et un dispositif d'alimentation du vérin (30),
le dispositif d'alimentation du vérin étant propre à alimenter le vérin (28) de sorte que la distance entre les butées haute (32) et basse (34) soit maintenue constante par le vérin (28).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 (22), and a secondary suspension system (24) between the chassis (22) and the car (14), the secondary suspension system (24) comprising a spring assembly (26) mounted between the chassis (22) and the car (14); ) characterized in that the secondary suspension system (24) comprises a jack (28), provided with a piston (42) extending at least partially between an upper stop (32) integral with the car (14) and a stop base (34) integral with the frame (22), and a device for supplying the jack (30),
the feed device of the jack being adapted to supply the jack (28) so that the distance between the upper stops (32) and lower (34) is kept constant by the jack (28). Véhicule ferroviaire selon la revendication 1, caractérisé en ce que la butée haute (32) et la butée basse (34) sont alignées verticalement.Railway vehicle according to claim 1, characterized in that the upper stop (32) and the lower stop (34) are aligned vertically. Véhicule ferroviaire selon l'une quelconque des revendications 1 à 2, caractérisé en ce que le vérin (28) comprend un cylindre (40), le piston (42) séparant le cylindre en une chambre haute (52) et une chambre basse (54), et en ce que le dispositif d'alimentation du vérin (30) est configuré pour alimenter les chambres haute (52) et basse (54).Railway vehicle according to any one of claims 1 to 2, characterized in that the jack (28) comprises a cylinder (40), the piston (42) separating the cylinder into a high chamber (52) and a lower chamber (54). ), and in that the feed device of the jack (30) is configured to feed the upper (52) and lower (54) chambers. Véhicule ferroviaire selon la revendication 3, caractérisé en ce que le dispositif d'alimentation du vérin (30) est propre à alimenter le vérin (28) de sorte que le piston (42) soit sensiblement compris entièrement dans le cylindre (40).Railway vehicle according to claim 3, characterized in that the feed device of the jack (30) is adapted to feed the jack (28) so that the piston (42) is substantially completely comprised in the cylinder (40). Véhicule ferroviaire selon l'une quelconque des revendications 1 à 2, caractérisé en ce que le vérin (28) comprend un cylindre (40), le piston (42) séparant le cylindre en une chambre haute (52) et une chambre basse (54), et en ce que le dispositif d'alimentation (30) du vérin est configuré pour alimenter seulement l'une des chambres haute et basse (52, 54), l'autre des chambres haute et basse étant équipée d'un ressort de rappel (133) configuré pour ramener le piston (42) dans une position de repos à l'intérieur du cylindre (40), lorsque le vérin (28) n'est pas alimenté par le dispositif d'alimentation (30).Railway vehicle according to any one of claims 1 to 2, characterized in that the jack (28) comprises a cylinder (40), the piston (42) separating the cylinder into a high chamber (52) and a lower chamber (54). ), and that the feed device (30) of the jack is configured to feed only one of the high and low chambers (52, 54), the other of the high and low chambers being equipped with a spring of recall (133) configured to return the piston (42) to a rest position at the inside of the cylinder (40), when the cylinder (28) is not powered by the supply device (30). Véhicule ferroviaire selon l'une quelconque des revendications 1 à 5, caractérisé en ce que, le dispositif d'alimentation (30) du vérin est propre à alimenter le vérin (28) de sorte que le piston (42) vienne en contact avec la butée basse (34) et la butée haute (32), le vérin (28) étant alors dans une position de débattement vertical maximal et la distance entre les butées haute (32) et basse (34) étant maintenue constante.Railway vehicle according to any one of claims 1 to 5, characterized in that the feed device (30) of the jack is adapted to feed the jack (28) so that the piston (42) comes into contact with the low stop (34) and the upper stop (32), the cylinder (28) then being in a position of maximum vertical displacement and the distance between the upper stops (32) and low (34) being kept constant. Véhicule ferroviaire selon la revendication 6, caractérisé en ce que le vérin (28) comprend un cylindre (40) solidaire de la voiture (12), en ce que le piston comprend une tête (48) et une tige (50) s'étendant depuis la tête et traversant le cylindre (40), et en ce que le dispositif d'alimentation du vérin (30) est propre à alimenter le vérin (28) de sorte que la tête (48) du piston soit maintenue en butée contre la butée haute (32) et que la tige (50) du piston soit maintenue en butée contre la butée basse (34).Railway vehicle according to claim 6, characterized in that the cylinder (28) comprises a cylinder (40) integral with the car (12), in that the piston comprises a head (48) and a rod (50) extending from the head and passing through the cylinder (40), and in that the feed device of the jack (30) is adapted to feed the jack (28) so that the head (48) of the piston is held in abutment against the high stop (32) and that the rod (50) of the piston is held in abutment against the lower stop (34). Véhicule ferroviaire selon la revendication 7, caractérisé en ce que le cylindre (40) comprend une extrémité (46), la butée haute (32) étant fixée à ladite extrémité (46), la butée haute étant munie d'un orifice de passage de la tige (50).Railway vehicle according to Claim 7, characterized in that the cylinder (40) comprises an end (46), the upper stop (32) being fixed to the said end (46), the upper stop being provided with a passage orifice (46). the rod (50). Véhicule ferroviaire selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le vérin (28) est situé à l'intérieur de l'ensemble de ressort (26) selon un axe principal (X) de la suspension secondaire (24).Railway vehicle according to one of claims 1 to 8, characterized in that the cylinder (28) is located inside the spring assembly (26) along a main axis (X) of the secondary suspension (24). ). Procédé de circulation d'un véhicule ferroviaire (10) selon l'une quelconque des revendications 1 à 9, comprenant les étapes suivantes : - circulation du véhicule ferroviaire (10), le vérin (28) étant alimenté par le dispositif d'alimentation (30), de sorte à permettre un déplacement relatif entre le châssis (22) et la voiture (14), et - arrêt du véhicule ferroviaire (10) à un quai (12), le vérin (28) étant alimenté par le dispositif d'alimentation (30), de sorte à maintenir constante la distance entre le châssis (22) et la voiture (14). A method of circulating a railway vehicle (10) according to any of claims 1 to 9, comprising the steps of: - circulation of the railway vehicle (10), the cylinder (28) being powered by the supply device (30), so as to allow a relative movement between the frame (22) and the car (14), and - stopping the railway vehicle (10) at a platform (12), the cylinder (28) being powered by the supply device (30), so as to maintain constant the distance between the frame (22) and the car (14); ).
EP17175265.2A 2016-06-09 2017-06-09 Rail vehicle provided with a leveling and associated running method Active EP3254924B1 (en)

Applications Claiming Priority (1)

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FR1655285A FR3052423B1 (en) 2016-06-09 2016-06-09 RAILWAY VEHICLE WITH LEVELING AND CIRCULATION METHOD THEREOF

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EP3254924A1 true EP3254924A1 (en) 2017-12-13
EP3254924B1 EP3254924B1 (en) 2019-02-06

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EP (1) EP3254924B1 (en)
CN (1) CN107487336B (en)
CA (1) CA2969403A1 (en)
ES (1) ES2724501T3 (en)
FR (1) FR3052423B1 (en)

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Also Published As

Publication number Publication date
FR3052423A1 (en) 2017-12-15
CN107487336B (en) 2021-08-27
EP3254924B1 (en) 2019-02-06
US20170355386A1 (en) 2017-12-14
CN107487336A (en) 2017-12-19
CA2969403A1 (en) 2017-12-09
US10543857B2 (en) 2020-01-28
FR3052423B1 (en) 2018-07-06
ES2724501T3 (en) 2019-09-11

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