EP3222486B1 - Railway vehicle bogie comprising a lowered body - Google Patents

Railway vehicle bogie comprising a lowered body Download PDF

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Publication number
EP3222486B1
EP3222486B1 EP17162857.1A EP17162857A EP3222486B1 EP 3222486 B1 EP3222486 B1 EP 3222486B1 EP 17162857 A EP17162857 A EP 17162857A EP 3222486 B1 EP3222486 B1 EP 3222486B1
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EP
European Patent Office
Prior art keywords
axle box
longitudinal
bogie
articulation
elevation
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EP17162857.1A
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German (de)
French (fr)
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EP3222486A1 (en
Inventor
Fabrice COTTIN
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Alstom Transport Technologies SAS
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Alstom Transport Technologies SAS
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Priority to FR1652637A priority Critical patent/FR3049253B1/en
Application filed by Alstom Transport Technologies SAS filed Critical Alstom Transport Technologies SAS
Publication of EP3222486A1 publication Critical patent/EP3222486A1/en
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Publication of EP3222486B1 publication Critical patent/EP3222486B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61FRAIL 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
    • B61F5/00Constructional 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
    • B61F5/26Mounting or securing axle-boxes in vehicle or bogie underframes
    • B61F5/30Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
    • B61F5/32Guides, e.g. plates, for axle-boxes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61FRAIL 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
    • B61F3/00Types of bogies
    • B61F3/02Types of bogies with more than one axle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61FRAIL 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
    • B61F5/00Constructional 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
    • B61F5/26Mounting or securing axle-boxes in vehicle or bogie underframes
    • B61F5/30Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61FRAIL 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
    • B61F5/00Constructional 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
    • B61F5/26Mounting or securing axle-boxes in vehicle or bogie underframes
    • B61F5/30Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
    • B61F5/301Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating metal springs

Description

La présente invention concerne un bogie de véhicule ferroviaire, du type comprenant un châssis comprenant au moins un longeron s'étendant selon une direction longitudinale et au moins une roue, ladite roue étant montée sur une boîte d'essieu et étant mobile en rotation par rapport à ladite boîte d'essieu autour d'un axe de rotation sensiblement perpendiculaire à la direction longitudinale, ladite boîte d'essieu étant fixée au longeron par un dispositif de suspension primaire comprenant un élément élastique agencé pour autoriser un débattement selon une direction d'élévation du châssis par rapport à la boîte d'essieu et à la roue, la direction d'élévation étant sensiblement perpendiculaire à la direction longitudinale et à l'axe de rotation, ledit élément élastique s'étendant entre un plateau solidaire de la boîte d'essieu et une surface d'appui solidaire du châssis.The present invention relates to a railway vehicle bogie, of the type comprising a chassis comprising at least one spar extending in a longitudinal direction and at least one wheel, said wheel being mounted on an axle box and being rotatable relative to at said axle box about an axis of rotation substantially perpendicular to the longitudinal direction, said axle box being fixed to the spar by a primary suspension device comprising an elastic element arranged to allow a movement in a direction of elevation of the chassis relative to the axle box and to the wheel, the elevation direction being substantially perpendicular to the longitudinal direction and to the axis of rotation, said elastic element extending between a plate integral with the box; axle and a support surface secured to the chassis.

L'invention concerne également un véhicule ferroviaire comprenant un tel bogie.The invention also relates to a railway vehicle comprising such a bogie.

Dans un bogie de véhicule ferroviaire, il est connu de suspendre le châssis du bogie par rapport aux essieux par l'intermédiaire de suspensions primaires s'étendant entre les boîtes d'essieu sur lesquelles les roues sont montées mobiles en rotation et les longerons du bogie. De telles suspensions primaires permettent d'amortir les déformations, telles que les gauches de voies, entre les essieux et le châssis.In a railway vehicle bogie, it is known to suspend the chassis of the bogie relative to the axles by means of primary suspensions extending between the axle boxes on which the wheels are mounted mobile in rotation and the longitudinal members of the bogie. . Such primary suspensions allow to damp the deformations, such as left lanes, between the axles and the chassis.

Comme représenté sur la figure 1 qui montre une partie d'un bogie conventionnel, chaque suspension primaire comprend généralement un élément élastique 1, tel qu'un ressort hélicoïdal, s'étendant entre un plateau 2 disposé sur la boîte d'essieu 4 et une surface d'appui 6 s'étendant sous un longeron 8 du châssis. Ainsi, un débattement selon une direction d'élévation, sensiblement verticale lorsque le véhicule ferroviaire circule, est autorisé entre l'essieu et le châssis, ce qui permet l'amortissement souhaité. Un tel agencement est nécessaire pour permettre la reprise des efforts appliqués par la masse du véhicule s'étendant au-dessus du bogie. Cependant, une telle architecture du bogie nécessite que le longeron 6 s'étende au-dessus de la boîte d'essieu, ce qui augmente l'encombrement du bogie selon la direction d'élévation.As shown on the figure 1 which shows a part of a conventional bogie, each primary suspension generally comprises a resilient element 1, such as a coil spring, extending between a plate 2 disposed on the axle box 4 and a bearing surface 6 s extending under a beam 8 of the chassis. Thus, a travel in a direction of elevation, substantially vertical when the rail vehicle is traveling, is allowed between the axle and the frame, which allows the desired damping. Such an arrangement is necessary to allow the recovery of the forces applied by the mass of the vehicle extending above the bogie. However, such a bogie architecture requires that the spar 6 extends above the axle box, which increases the size of the bogie in the direction of elevation.

Un tel encombrement peut être gênant, notamment pour des véhicules ferroviaires dont les voitures ont deux étages, ce qui nécessite d'avoir un plancher inférieur. Dans le cas d'un bogie trop encombrant, il n'est pas possible d'avoir deux étages au droit du bogie sans limiter fortement le volume de l'habitacle, ce qui est inconfortable pour la circulation des passagers. Certains véhicules ferroviaires prévoient de n'avoir qu'un passage, dit passage d'interconnexion, à un seul étage au droit des bogies, ce qui oblige à emprunter un escalier pour passer d'une voiture à une autre lorsqu'un passager n'est pas au niveau auquel s'étend le passage d'interconnexion.Such a size can be inconvenient, especially for railway vehicles whose cars have two floors, which requires a lower floor. In the case of a bogie too bulky, it is not possible to have two floors to the right of the bogie without greatly limiting the volume of the passenger compartment, which is uncomfortable for the movement of passengers. Some railway vehicles plan to have only one passage, called the interconnection passage, on a single floor at the bogies' right, which makes it necessary to borrow a stairway to pass from one car to another when a passenger is not at the level at which the interchange passage extends.

D'autres exemples de bogies permettant de réduire l'encombrement vertical sont connus par exemple de FR 2 914 610 A1 ou de EP 0 326 179 A1 .Other examples of bogies making it possible to reduce the vertical bulk are known for example from FR 2 914 610 A1 or EP 0 326 179 A1 .

L'un des buts de l'invention est de pallier ces inconvénients en proposant un bogie dont l'encombrement, notamment selon la direction d'élévation, est réduit.One of the aims of the invention is to overcome these disadvantages by proposing a bogie whose size, especially in the direction of elevation, is reduced.

A cet effet, l'invention concerne un bogie du type précité, dans lequel le plateau, la surface d'appui et l'élément élastique sont disposés selon la direction longitudinale entre l'axe de rotation et le longeron.For this purpose, the invention relates to a bogie of the aforementioned type, wherein the plate, the bearing surface and the elastic element are arranged in the longitudinal direction between the axis of rotation and the spar.

En décalant le plateau, la surface d'appui et l'élément élastique pour qu'ils s'étendent selon la direction longitudinale entre l'axe de rotation et le longeron, l'espace au-dessus de la boîte d'essieu est libéré puisque le longeron ne doit plus nécessairement s'étendre au-dessus de la boîte d'essieu. Un débattement est toujours autorisé selon la direction d'élévation entre la boîte d'essieu et le longeron.By shifting the plate, the bearing surface and the elastic member so that they extend in the longitudinal direction between the axis of rotation and the spar, the space above the axle box is released since the spar must not necessarily extend above the axle box. Travel is always allowed in the direction of elevation between the axle box and the spar.

Selon une autre caractéristique du bogie selon l'invention, le dispositif de suspension primaire comprend en outre une bielle inférieure articulée d'une part à un point d'articulation inférieur du longeron et d'autre part à un point d'articulation inférieur de la boîte d'essieu et une bielle supérieure articulée d'une part à un point d'articulation supérieur du longeron et d'autre part à un point d'articulation supérieur de la boîte d'essieu, le point d'articulation inférieur et le point d'articulation supérieur du longeron, respectivement de la boîte d'essieu, s'étendant l'un en-dessous de l'autre selon la direction d'élévation, le plateau, la surface d'appui et l'élément élastique étant disposés selon la direction d'élévation entre la bielle inférieure et la bielle supérieure.According to another characteristic of the bogie according to the invention, the primary suspension device further comprises a lower connecting rod hinged on the one hand to a lower hinge point of the spar and on the other hand to a lower hinge point of the spider. axle box and an upper link articulated firstly to an upper articulation point of the spar and secondly to an upper articulation point of the axle box, the lower articulation point and the point of upper articulation of the spar, respectively of the axle box, extending one below the other in the direction of elevation, the plate, the bearing surface and the elastic element being arranged in the direction of elevation between the lower link and the upper link.

Les bielles inférieure et supérieure permettent de reprendre les efforts appliqués entre le châssis et la partie roulante du bogie selon la direction d'élévation et de reprendre le couple généré par le montage en porte à faux de l'élément élastique par rapport à l'axe de rotation.The lower and upper connecting rods make it possible to take up the forces applied between the chassis and the rolling part of the bogie according to the elevation direction and to recover the torque generated by the cantilevered mounting of the elastic element with respect to the axis. of rotation.

Selon d'autres caractéristiques du bogie selon l'invention, prises isolément ou selon toutes les combinaisons techniques possibles :

  • le point d'articulation inférieur et le point d'articulation supérieur de la boîte d'essieu sont disposés de part et d'autre de l'axe de rotation selon la direction d'élévation ;
  • le point d'articulation inférieur et le point d'articulation supérieur de la boîte d'essieu sont disposés de part et d'autre de l'axe de rotation selon la direction longitudinale ;
  • les axes d'articulation des bielles inférieure et supérieure au longeron et à la boîte d'essieu sont sensiblement parallèles à l'axe de rotation ;
  • la bielle inférieure et la bielle supérieure sont de même longueur ;
  • la surface d'appui s'étend selon la direction longitudinale à partir d'une extrémité longitudinale du longeron vers la boîte d'essieu, ladite extrémité longitudinale s'étendant en regard de la boîte d'essieu selon la direction longitudinale ;
  • le longeron s'étend à une hauteur, mesurée selon la direction d'élévation, inférieure à la hauteur de la roue ;
  • l'élément élastique comprend au moins un ressort hélicoïdal d'axe s'étendant selon la direction d'élévation ; et
  • le châssis comprend au moins deux longerons dont chacune des extrémités longitudinales est fixée à une boîte d'essieu par un dispositif d'articulation primaire, une roue étant montée mobile en rotation sur chacune desdites boîtes d'essieu, les éléments élastiques des dispositifs d'articulation primaire s'étendant chacun entre une boîte d'essieu et une extrémité longitudinale d'un longeron selon la direction longitudinale.
According to other characteristics of the bogie according to the invention, taken separately or according to all the possible technical combinations:
  • the lower hinge point and the upper hinge point of the axle box are arranged on either side of the axis of rotation in the direction of elevation;
  • the lower hinge point and the upper hinge point of the axle box are arranged on either side of the axis of rotation in the longitudinal direction;
  • the axes of articulation of the lower and upper links to the spar and to the axle box are substantially parallel to the axis of rotation;
  • the lower link and the upper link are of the same length;
  • the bearing surface extends in the longitudinal direction from a longitudinal end of the spar to the axle box, said longitudinal end extending opposite the axle box in the longitudinal direction;
  • the spar extends at a height, measured in the direction of elevation, less than the height of the wheel;
  • the elastic element comprises at least one helical spring axis extending in the direction of elevation; and
  • the chassis comprises at least two longitudinal members each of whose longitudinal ends is fixed to an axle box by a primary articulation device, a wheel being rotatably mounted on each of said axle boxes, the elastic elements of the primary joint each extending between an axle box and a longitudinal end of a spar in the longitudinal direction.

D'autres aspects et avantages de l'invention apparaîtront à la lecture de la description qui suit, donnée à titre d'exemple et faite en référence aux dessins annexés, dans lesquels :

  • la figure 1 est une représentation schématique de côté d'une partie d'un bogie selon l'art antérieur,
  • la figure 2 est une représentation schématique de côté d'une partie d'un bogie selon l'invention, et
  • la figure 3 est une représentation schématique simplifiée de dessus d'un bogie selon l'invention.
Other aspects and advantages of the invention will appear on reading the description which follows, given by way of example and with reference to the appended drawings, in which:
  • the figure 1 is a schematic side view of a part of a bogie according to the prior art,
  • the figure 2 is a schematic side view of a portion of a bogie according to the invention, and
  • the figure 3 is a simplified schematic representation of above a bogie according to the invention.

Dans la description, le terme « longitudinal » est défini par rapport à la direction de circulation d'un véhicule ferroviaire sur des rails. Le terme « transversal » est défini selon une direction perpendiculaire à la direction longitudinale et correspondant à la direction selon laquelle les rails sont espacés. Le terme « élévation » est défini selon une direction perpendiculaire à la direction longitudinale et à la direction transversale. Lorsque le véhicule ferroviaire circule sur des rails horizontaux, les directions longitudinale et transversale sont sensiblement horizontales et la direction d'élévation est sensiblement verticale. Les termes « en-dessous » et « au-dessus » sont définis par rapport à la direction d'élévation.In the description, the term "longitudinal" is defined with respect to the direction of movement of a railway vehicle on rails. The term "transverse" is defined in a direction perpendicular to the longitudinal direction and corresponding to the direction in which the rails are spaced. The term "elevation" is defined in a direction perpendicular to the longitudinal direction and the transverse direction. When the railway vehicle is traveling on horizontal rails, the longitudinal and transverse directions are substantially horizontal and the elevation direction is substantially vertical. The terms "below" and "above" are defined relative to the elevation direction.

En référence aux figures 2 et 3, on décrit un bogie 10 comprenant un châssis 12 et au moins une roue 14 reliée à un longeron 16 du châssis 12 par l'intermédiaire d'une boîte d'essieu 18 et d'un dispositif de suspension primaire 20.With reference to figures 2 and 3 , a bogie 10 comprising a frame 12 and at least one wheel 14 connected to a spar 16 of the frame 12 via an axle box 18 and a primary suspension device 20 is described.

Selon le mode de réalisation représenté sur la figure 3, le bogie 10 comprend, de façon conventionnelle, quatre roues 14 reliées chacune au châssis 12 par l'intermédiaire d'une boîte d'essieu 18 et d'un dispositif de suspension primaire 18. Les roues 14 sont reliées deux à deux par un arbre 22 de sorte à former deux essieux montés chacun mobile en rotation dans une paire de boîtes d'essieu 18. Le châssis 12 comprend deux longerons 16 reliant chacun l'une des boîtes d'essieu 18 d'une paire à l'une des boîtes d'essieu 18 de l'autre paire de boîtes d'essieu 18. Les longerons 16 sont par exemple reliés l'un à l'autre par deux traverses 24. Cependant, cette structure particulière de bogie 10 n'est donnée qu'à titre d'exemple et d'autres structures pourraient être envisagées. Ainsi, chaque roue pourrait être montée mobile en rotation dans une boîte d'essieu indépendamment des autres. Le bogie pourrait comprendre plus de deux longerons, par exemple articulés entre eux. Les roues ont été représentées comme s'étendant à l'extérieur du bogie 10, mais elles pourraient être disposées à l'intérieur. Le bogie peut être motorisé ou non, c'est-à-dire qu'il peut comprendre, ou non, un ou deux moteurs pour entraîner en rotation un ou les deux essieux du bogie 10.According to the embodiment shown on the figure 3 , the bogie 10 comprises, conventionally, four wheels 14 each connected to the frame 12 via an axle box 18 and a primary suspension device 18. The wheels 14 are connected in pairs by a shaft 22 so as to form two axles each mounted to rotate in a pair of axle boxes 18. The frame 12 comprises two longitudinal members 16 each connecting one of the axle boxes 18 of a pair to one of the axle boxes 18 of the other pair of axle boxes 18. The longitudinal members 16 are for example connected to each other by two cross members 24. However, this particular bogie structure 10 is given only as an example and other structures could be considered. Thus, each wheel could be rotatably mounted in an axle box independently of the others. The bogie could comprise more than two longitudinal members, for example articulated between them. The wheels have been shown as extending outside the bogie 10, but they could be arranged inside. The bogie may be motorized or not, that is to say that it may or may not comprise one or two motors for rotating one or both axles of the truck 10.

Dans la suite de la description seule la relation entre une roue, une boîte d'essieu et un longeron sera décrite, cette relation étant identique pour toutes les roues, boîtes d'essieu et longerons.In the following description only the relationship between a wheel, an axle box and a spar will be described, this relationship being identical for all wheels, axle boxes and spars.

La roue 14 est mobile en rotation par rapport à la boîte d'essieu 18 autour d'un axe de rotation A sensiblement transversal et présente une hauteur h, mesurée selon la direction d'élévation, égale au diamètre de la roue 14. La hauteur h est par exemple sensiblement comprise entre 750 mm et 1250 mm.The wheel 14 is rotatable relative to the axle box 18 about a substantially transverse axis of rotation A and has a height h, measured in the direction of elevation, equal to the diameter of the wheel 14. The height h is for example substantially between 750 mm and 1250 mm.

Le longeron 16 s'étend selon une direction longitudinale à une hauteur h', mesurée selon la direction d'élévation, inférieure à la hauteur h de la roue. Par inférieure, on entend que le longeron 16 ne présente aucune partie s'étendant à une hauteur supérieure à celle de la roue. Le longeron 16 ne comprend notamment pas de partie s'élevant au-dessus de la boîte d'essieu 18, comme représenté sur la figure 2. La hauteur h' est par exemple sensiblement comprise entre 475 mm et 725 mm. Un tel résultat peut être obtenu grâce au dispositif de suspension primaire 20 selon l'invention comme cela sera décrit ultérieurement.The spar 16 extends in a longitudinal direction at a height h ', measured in the direction of elevation, less than the height h of the wheel. By lower is meant that the spar 16 has no portion extending to a height greater than that of the wheel. The spar 16 does not include any portion rising above the axle box 18, as shown in FIG. figure 2 . The height h 'is for example substantially between 475 mm and 725 mm. Such a result can be obtained thanks to the primary suspension device 20 according to the invention as will be described later.

Lorsque le dispositif de suspension primaire 20 n'est pas sollicité, le longeron 16 s'étend sensiblement à la même hauteur que la boîte d'essieu 18 en regard de celle-ci. Le dispositif de suspension primaire 20 s'étend selon la direction longitudinale entre une extrémité longitudinale 26 du longeron 16 et la boîte d'essieu 18 de façon à relier de façon suspendue la boîte d'essieu 18 au longeron 16.When the primary suspension device 20 is not stressed, the spar 16 extends substantially to the same height as the axle box 18 facing it. The primary suspension device 20 extends in the longitudinal direction between a longitudinal end 26 of the spar 16 and the axle box 18 so as to suspendably connect the axle box 18 to the spar 16.

Le dispositif de suspension primaire 20 comprend au moins un élément élastique 28 s'étendant entre un plateau 30 solidaire de la boîte d'essieu 18 et une surface d'appui 32 solidaire du longeron 16.The primary suspension device 20 comprises at least one elastic element 28 extending between a plate 30 integral with the axle box 18 and a bearing surface 32 integral with the spar 16.

Selon un mode de réalisation, le plateau 30 et la boîte d'essieu 18 forment une seule pièce.According to one embodiment, the plate 30 and the axle box 18 form a single piece.

Selon un mode de réalisation, la surface d'appui 32 et le longeron 16 forment une seule pièce.According to one embodiment, the bearing surface 32 and the spar 16 form a single piece.

La surface d'appui 32 s'étend au-dessus du et parallèlement au plateau 30 de sorte à définir entre eux un espace s'étendant selon une direction d'élévation dans lequel l'élément élastique 28 s'étend.The bearing surface 32 extends above and parallel to the plate 30 so as to define between them a space extending in a direction of elevation in which the elastic member 28 extends.

Le plateau 30 est solidaire d'une partie inférieure 34 de la boîte d'essieu 18 et s'étend longitudinalement à partir de celle-ci vers l'extrémité longitudinale 26 du longeron 16. Ainsi, le plateau 30 est décalé longitudinalement vers l'intérieur du bogie 10 par rapport à l'axe de rotation A. La surface d'appui 32 s'étend longitudinalement en regard du plateau 30 à partir d'une partie supérieure 36 du longeron 16, c'est-à-dire que la surface d'appui 32 est décalée longitudinalement vers la boîte d'essieu 18 par rapport à l'extrémité longitudinale 26 du longeron 16.The plate 30 is secured to a lower portion 34 of the axle box 18 and extends longitudinally from it to the longitudinal end 26 of the spar 16. Thus, the plate 30 is offset longitudinally to the inside the bogie 10 relative to the axis of rotation A. The bearing surface 32 extends longitudinally facing the plate 30 from an upper portion 36 of the spar 16, that is to say that the bearing surface 32 is shifted longitudinally towards the axle box 18 with respect to the longitudinal end 26 of the spar 16.

L'élément élastique 28 est par exemple formé par un ressort hélicoïdal dont l'axe s'étend selon la direction d'élévation et dont les extrémités prennent appui sur le plateau 30 d'une part et sur la surface d'appui 32 d'autre part. Selon le mode de réalisation représenté sur la figure 2, le dispositif de suspension primaire comprend deux ressorts hélicoïdaux coaxiaux, l'un des ressorts s'étendant à l'intérieur de l'autre et enroulé en sens opposé. L'élément élastique 28 s'étendant entre le plateau 30 et la surface d'appui 32, cet élément élastique 28 est donc lui aussi disposé entre la boîte d'essieu 18 et l'extrémité longitudinale 26 du longeron 16 selon la direction longitudinale.The elastic element 28 is for example formed by a helical spring whose axis extends in the direction of elevation and whose ends bear on the plate 30 on the one hand and on the bearing surface 32 of somewhere else. According to the embodiment shown on the figure 2 , the primary suspension device comprises two coaxial coil springs, one of the springs extending inside the other and wound in opposite directions. The elastic element 28 extending between the plate 30 and the bearing surface 32, this elastic element 28 is also arranged between the axle box 18 and the longitudinal end 26 of the beam 16 in the longitudinal direction.

Le dispositif de suspension primaire comprend en outre deux bielles, à savoir une bielle inférieure 38 et une bielle supérieure 40 joignant chacune l'extrémité longitudinale 26 du longeron 16 à la boîte d'essieu 18.The primary suspension device further comprises two connecting rods, namely a lower link 38 and an upper connecting rod 40 each joining the longitudinal end 26 of the spar 16 to the axle box 18.

Les bielles inférieures 38 et supérieure 40 sont identiques, c'est-à-dire qu'elles présentent la même forme et la même longueur, et s'étendent parallèlement selon des directions sensiblement longitudinales lorsque le dispositif de suspension primaire n'est pas sollicité. Chaque bielle 38, 40 est articulée d'une part à l'une de ses extrémités à la boîte d'essieu 18 et d'autre part à son extrémité au longeron 16 autour d'axes d'articulation sensiblement parallèles à l'axe de rotation A.The lower rods 38 and 40 are identical, that is to say they have the same shape and the same length, and extend in parallel in substantially longitudinal directions when the primary suspension device is not requested. . Each connecting rod 38, 40 is hinged on one hand at one of its ends to the axle box 18 and on the other hand at its end to the spar 16 about axes of articulation substantially parallel to the axis of rotation A.

Plus particulièrement, la bielle inférieure 38 est articulée à la partie inférieure 34 de la boîte d'essieu 18 d'une part et à une partie inférieure 42 du longeron 16 d'autre part. Le point d'articulation inférieur 44 entre la bielle inférieure 38 et la partie inférieure 34 est décalé longitudinalement et selon la direction d'élévation par rapport à l'axe de rotation A. Ainsi, le point d'articulation inférieur 44 est décalé vers le plateau 30 selon la direction longitudinale et est disposé sous l'axe de rotation A selon la direction d'élévation, comme visible sur la figure 2.More particularly, the lower link 38 is articulated to the lower portion 34 of the axle box 18 on the one hand and to a lower portion 42 of the spar 16 on the other hand. The lower articulation point 44 between the lower connecting rod 38 and the lower part 34 is shifted longitudinally and in the direction of elevation with respect to the axis of rotation A. Thus, the lower articulation point 44 is shifted towards the tray 30 according to the direction longitudinal and is disposed under the axis of rotation A in the direction of elevation, as visible on the figure 2 .

La bielle supérieure 40 est articulée à une partie supérieure 46 de la boîte d'essieu d'une part et à la partie supérieure 36 du longeron 16 d'autre part. Le point d'articulation supérieur 48 entre la bielle supérieure 40 et la partie supérieure 46 est décalé longitudinalement et selon la direction d'élévation par rapport à l'axe de rotation A. Ainsi, le point d'articulation supérieur 48 est décalé vers l'extérieur du bogie selon la direction longitudinale et est disposé au-dessus de l'axe de rotation A selon la direction d'élévation, comme visible sur la figure 2.The upper link 40 is articulated to an upper portion 46 of the axle box on the one hand and to the upper portion 36 of the spar 16 on the other hand. The upper articulation point 48 between the upper link 40 and the upper part 46 is offset longitudinally and in the direction of elevation relative to the axis of rotation A. Thus, the upper articulation point 48 is shifted towards the outside the bogie in the longitudinal direction and is disposed above the axis of rotation A in the direction of elevation, as visible on the figure 2 .

Ainsi, les points d'articulation inférieur 44 et supérieur 48 sont disposés de part et d'autre de l'axe de rotation A selon la direction longitudinale et selon la direction d'élévation. Selon le mode de réalisation représenté sur la figure 2, les points d'articulation inférieur 44 et supérieur 48 et l'axe de rotation A sont alignés selon une droite inclinée par rapport à la direction longitudinale et la direction d'élévation.Thus, the lower articulation points 44 and upper 48 are arranged on either side of the axis of rotation A in the longitudinal direction and in the direction of elevation. According to the embodiment shown on the figure 2 , the lower articulation points 44 and upper 48 and the axis of rotation A are aligned along a line inclined with respect to the longitudinal direction and the elevation direction.

Les bielles inférieure 38 et supérieure 40 étant identiques, le point d'articulation inférieur 50 entre la bielle inférieure 38 et la partie inférieure 42 du longeron et le point d'articulation supérieur 52 entre la bielle supérieure 40 et la partie supérieure 36 du longeron sont également décalés l'un par rapport à l'autre selon la direction longitudinale et selon la direction d'élévation.The lower and upper links 38 being identical, the lower articulation point 50 between the lower link 38 and the lower part 42 of the spar and the upper articulation point 52 between the upper link 40 and the upper part 36 of the spar are also offset relative to each other in the longitudinal direction and in the direction of elevation.

Ainsi, les points d'articulation 44, 48, 50, 52 forment un parallélogramme déformable selon le mouvement des bielles induit par le mouvement du longeron 16 par rapport à la boîte d'essieu 18. Un tel parallélogramme déformable permet de reprendre les efforts appliqués entre le châssis et la partie roulante du bogie selon la direction d'élévation et de reprendre le couple généré par le montage en porte à faux de l'élément élastique par rapport à l'axe de rotation A, c'est-à-dire le montage décalé selon la direction longitudinale de l'élément élastique 28 par rapport à l'axe de rotation A.Thus, the articulation points 44, 48, 50, 52 form a deformable parallelogram according to the movement of the connecting rods induced by the movement of the spar 16 relative to the axle box 18. Such a deformable parallelogram makes it possible to take up the forces applied. between the frame and the rolling part of the bogie according to the elevation direction and resume the torque generated by the cantilevered mounting of the elastic member relative to the axis of rotation A, that is to say the offset mounting in the longitudinal direction of the elastic member 28 relative to the axis of rotation A.

Le plateau 30, la surface d'appui 32 et l'élément élastique 28 s'étendent entre la bielle inférieure 38 et la bielle supérieure 40 selon la direction d'élévation.The plate 30, the bearing surface 32 and the elastic element 28 extend between the lower link 38 and the upper link 40 in the elevation direction.

Dans la mesure où le plateau 30 s'étend à partir de la partie inférieure 34 de la boîte d'essieu 18 et vers le longeron 16, il n'est pas nécessaire, pour placer la surface d'appui en regard du plateau, de prévoir que le longeron passe au-dessus de la boîte d'essieu 18 comme c'est usuellement le cas. Ainsi, en comparant le bogie traditionnel représenté sur la figure 1 et le bogie selon l'invention, un espace compris entre 200 mm et 450 mm peut être gagné au-dessus de la boîte d'essieu 18.Insofar as the plate 30 extends from the lower part 34 of the axle box 18 and towards the spar 16, it is not necessary, to place the bearing surface opposite the plate, to provide that the beam passes over the axle box 18 as is usually the case. So by comparing the traditional truck represented on the figure 1 and the bogie according to the invention, a space between 200 mm and 450 mm can be gained above the axle box 18.

Ainsi, l'encombrement du châssis 12 selon la direction d'élévation est réduit, puisque la hauteur h' à laquelle s'étend le longeron 16 peut être inférieure à la hauteur h de la roue, comme cela a été décrit précédemment, tout en conservant un dispositif d'articulation primaire 20 efficace apte à suspendre le châssis 12 par rapport à la boîte d'essieu 18.Thus, the bulk of the frame 12 in the direction of elevation is reduced, since the height h 'at which the spar 16 extends may be less than the height h of the wheel, as described above, while maintaining an effective primary articulation device 20 able to suspend the frame 12 relative to the axle box 18.

Un tel bogie est particulièrement adapté pour des véhicules ferroviaires à plancher bas, dans lesquels on souhaite que le plancher bas s'étende également au droit du bogie sans limiter le volume disponible au droit du volume. C'est par exemple le cas dans un véhicule ferroviaire à deux étages dans lequel le passage d'interconnexion joignant deux voitures s'étendant au-dessus du bogie comprend également deux étages.Such a bogie is particularly suitable for low floor rail vehicles, in which it is desired that the low floor also extends to the right of the bogie without limiting the available volume volume volume. This is for example the case in a two-stage railway vehicle in which the interconnection passage connecting two cars extending above the bogie also comprises two floors.

Dans un tel véhicule ferroviaire, le passage d'interconnexion comprend un plancher inférieur reliant les planchers inférieurs de deux voitures adjacentes et un plancher supérieur reliant les planchers supérieurs de ces deux voitures, le plancher inférieur passant au-dessus du bogie. Dans la mesure où les longerons 16 du châssis s'étendent à une hauteur réduite, la hauteur du plancher inférieur du passage d'interconnexion peut également être réduite, ce qui permet d'augmenter l'espace disponible dans le passage d'interconnexion.In such a railway vehicle, the interconnecting passage comprises a lower floor connecting the lower floors of two adjacent cars and an upper floor connecting the upper floors of these two cars, the lower floor passing over the bogie. Since frame members 16 extend at a reduced height, the height of the lower floor of the interconnect passage may also be reduced, thereby increasing the available space in the interconnect passage.

Un tel bogie peut également être utilisé lorsqu'il s'étend directement sous une voiture au plancher inférieur abaissé.Such a truck can also be used when it extends directly under a car lowered lower floor.

Claims (10)

  1. Railway vehicle bogie (10) comprising a chassis (12) comprising at least one side member (16) extending in a longitudinal direction and at least one wheel (14), said wheel (14) being mounted on an axle box (18) and being movable in rotation relative to said axle box (18) about an axis of rotation (A) substantially perpendicular to the longitudinal direction, said axle box (18) being fixed to the side member (16) by a primary suspension device (20) comprising a resilient element (28) arranged to permit a movement in an elevation direction of the chassis (12) relative to the axle box (18) and to the wheel (14), the elevation direction being substantially perpendicular to the longitudinal direction and to the axis of rotation (A), said resilient element (28) extending between a plate (30) integral with the axle box (18) and a support surface (32) integral with the chassis (12), characterised in that the plate (30), the support surface (32) and the resilient element (28) are arranged in the longitudinal direction between the axis of rotation (A) and the side member (16).
  2. Bogie according to claim 1, wherein the primary suspension device (20) further comprises a lower rod (38) which is articulated on the one hand with a lower point of articulation (50) of the side member (16) and on the other hand with a lower point of articulation (44) of the axle box (18), and an upper rod (40) which is articulated on the one hand with an upper point of articulation (52) of the side member (16) and on the other hand with an upper point of articulation (48) of the axle box (18), the lower point of articulation (50, 44) and the upper point of articulation (52, 48) of the side member (16) and of the axle box (18), respectively, extending one beneath the other in the elevation direction, the plate (30), the support surface (32) and the resilient element (28) being arranged in the elevation direction between the lower rod (38) and the upper rod (40).
  3. Bogie according to claim 2, wherein the lower point of articulation (44) and the upper point of articulation (48) of the axle box (18) are arranged on either side of the axis of rotation (A) in the elevation direction.
  4. Bogie according to claim 2 or 3, wherein the lower point of articulation (44) and the upper point of articulation (48) of the axle box (18) are arranged on either side of the axis of rotation (A) in the longitudinal direction.
  5. Bogie according to any one of claims 2 to 4, wherein the axes of articulation of the lower (38) and upper (40) rods with the side member (16) and with the axle box (18) are substantially parallel to the axis of rotation (A).
  6. Bogie according to any one of claims 2 to 5, wherein the lower rod (38) and the upper rod (40) are of the same length.
  7. Bogie according to any one of claims 1 to 6, wherein the support surface (32) extends in the longitudinal direction from a longitudinal end (26) of the side member (16) towards the axle box (18), said longitudinal end (26) extending opposite the axle box (18) in the longitudinal direction.
  8. Bogie according to any one of claims 1 to 7, wherein the side member (16) extends at a height (h'), measured in the elevation direction, which is less than the height (h) of the wheel (14).
  9. Bogie according to any one of claims 1 to 8, wherein the resilient element (28) comprises at least one helical spring the axis of which extends in the elevation direction.
  10. Bogie according to any one of claims 1 to 9, wherein the chassis (12) comprises at least two side members (16), each of the longitudinal ends (16) of which is fixed to an axle box (18) by a primary articulation device (20), a wheel (14) being mounted to be movable in rotation on each of said axle boxes (18), the resilient elements (28) of the primary articulation devices (20) each extending between an axle box (18) and a longitudinal end (26) of a side member (16) in the longitudinal direction.
EP17162857.1A 2016-03-25 2017-03-24 Railway vehicle bogie comprising a lowered body Active EP3222486B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1652637A FR3049253B1 (en) 2016-03-25 2016-03-25 RAILWAY VEHICLE BOGIE COMPRISING A LOWER CHASSIS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL17162857T PL3222486T3 (en) 2016-03-25 2017-03-24 Railway vehicle bogie comprising a lowered body

Publications (2)

Publication Number Publication Date
EP3222486A1 EP3222486A1 (en) 2017-09-27
EP3222486B1 true EP3222486B1 (en) 2019-01-23

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Application Number Title Priority Date Filing Date
EP17162857.1A Active EP3222486B1 (en) 2016-03-25 2017-03-24 Railway vehicle bogie comprising a lowered body

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EP (1) EP3222486B1 (en)
ES (1) ES2721770T3 (en)
FR (1) FR3049253B1 (en)
PL (1) PL3222486T3 (en)
RU (1) RU2724473C2 (en)
TR (1) TR201905650T4 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH348980A (en) * 1957-02-23 1960-09-30 Inventio Ag Bogie on rail vehicles
FR1253350A (en) * 1959-12-30 1961-02-10 Const Du Ct Atel Advanced Bogie
FR2626540B1 (en) * 1988-01-28 1990-05-18 Alsthom Creusot Rail BOGIE PRIMARY SUSPENSION
FR2914610A1 (en) * 2007-04-05 2008-10-10 Alstom Transport Sa PRIMARY SUSPENSION DEVICE OF A RAIL VEHICLE BOGIE
FR2970457B1 (en) * 2011-01-17 2013-02-15 Alstom Transport Sa BOGIE OF SUSPENDED RAIL VEHICLE
DE102011110090A1 (en) * 2011-08-12 2013-02-14 Bombardier Transportation Gmbh Radträgeranlenkung for a rail vehicle
FR2991956B1 (en) * 2012-06-18 2014-07-04 Alstom Transport Sa BOGIE OF A RAILWAY VEHICLE HAVING IMPROVED SUSPENSIONS, IN PARTICULAR FOR A LOW FLOOR TRAMWAY
RU154856U1 (en) * 2015-02-20 2015-09-10 Общество с ограниченной ответственностью "ПК Транспортные системы" (ООО "ПК ТС") Tram Car with 100% Reduced Floor Level
RU159661U1 (en) * 2015-06-01 2016-02-20 Публичное акционерное общество "Крюковский вагоностроительный завод" (ПАО "КВСЗ") DRIVE TROLLEY OF ELECTRIC TRAIN CARS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
RU2724473C2 (en) 2020-06-23
FR3049253B1 (en) 2018-04-20
TR201905650T4 (en) 2019-05-21
EP3222486A1 (en) 2017-09-27
FR3049253A1 (en) 2017-09-29
ES2721770T3 (en) 2019-08-05
RU2017109703A (en) 2018-09-25
PL3222486T3 (en) 2019-07-31
RU2017109703A3 (en) 2020-05-13

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