EP1270359B1 - Motorized bogie for a low-floor railway vehicle - Google Patents

Motorized bogie for a low-floor railway vehicle Download PDF

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Publication number
EP1270359B1
EP1270359B1 EP02291504A EP02291504A EP1270359B1 EP 1270359 B1 EP1270359 B1 EP 1270359B1 EP 02291504 A EP02291504 A EP 02291504A EP 02291504 A EP02291504 A EP 02291504A EP 1270359 B1 EP1270359 B1 EP 1270359B1
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EP
European Patent Office
Prior art keywords
wheel
chassis
bogie
outlet reducer
outside
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EP02291504A
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German (de)
French (fr)
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EP1270359A1 (en
Inventor
Christophe Eche
Jean-Christophe Loiseau
Alain Rodet
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Alstom Transport SA
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Alstom SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
    • B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
    • B61C9/52—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with transmission shafts at an angle to the driving axles
    • 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
    • B61F3/00—Types of bogies
    • B61F3/16—Types of bogies with a separate axle for each wheel

Definitions

  • the invention relates to a motor bogie for a railway vehicle with an integral low floor, and more particularly to a bogie comprising a chassis resting on four wheels via a primary suspension, the chassis supporting at least one motor arranged on one side. of the chassis and connected to at least one wheel by transmission means.
  • the invention is particularly suitable for trams for which a low floor can facilitate access and exit to children, the elderly and disabled.
  • a bogie for low floor rail vehicle comprising a chassis resting on two axles via a primary suspension, the chassis supporting engines of tractions arranged laterally on the bogie and connected to the wheels by transmission means arranged outside the wheels.
  • Such a bogie has the disadvantage of having axles and axle boxes that clutter the space between the wheels and therefore require to arrange the floor above the axles.
  • Document EP-B1-0 698 540 discloses a low-floor rail vehicle engine bogie comprising a chassis resting on four individually mounted wheels, without an axle shaft connection, and supporting two motors arranged laterally on the bogie. Each motor has two output shafts directly connected to a gearbox disposed outside the wheels and connected to one of the wheels by a hollow shaft type coupling allowing a vertical movement of the wheel.
  • Such a bogie has the advantage of not having an axle shaft connection between the individual wheels, which makes it possible to lower the floor more advantageously, but nevertheless has the disadvantage of having shafts of the wheels which are guided by axle boxes disposed inside the wheels, which encumbers the space inside the wheels and therefore limits the width available for the floor at the bogies.
  • Such a bogie also has the disadvantage of including braking members which are placed at the level of the gear units and which are therefore specific to the engine bogie, which leads to having on a railway vehicle braking devices which are different on the motor bogies and on the carrier bogies which complicates maintenance operations.
  • a bogie according to the preamble of claim 1 is known from DE-OS-2910392.
  • An object of the present invention is therefore to overcome these disadvantages by proposing a motor bogie for rail vehicle with low floor integral that allows a floor at the bogie extending to a very low height and a near width the wheel spacing.
  • Another object of the present invention is to provide a motor bogie for rail vehicle which comprises easily accessible braking members and which can indifferently equip bogies carriers or engines.
  • the invention relates to a motor truck for a low-floor railway vehicle comprising a chassis resting on four wheels by means of a primary suspension, the chassis supporting at least one motor arranged on one side of the chassis and connected to least one wheel by transmission means, each wheel having an individual wheel shaft supported by an axle box, the transmission means comprising a gearbox coupled directly to the wheel shaft and a telescopic transmission, type to double universal joint, arranged between the gearbox and the engine, characterized in that the gearbox is placed outside the wheel and comprises a housing incorporating the axle box of the wheel shaft, the gearbox housing also serving as a support element to a primary suspension member on which the frame is supported.
  • FIGS. 1 and 2 show a tram motor bogie comprising a chassis 1 resting on four wheels 2 by means of a primary suspension 3 allowing a vertical deflection of the order of +/- 15 mm.
  • the four wheels 2 are conventionally distributed according to two running gear each intended to come on a rail of the track, the wheels 2 each having an individual wheel shaft mounted on an axle box and not being interconnected by an axle shaft.
  • the chassis 1 comprises a structure consisting mainly of two longitudinal longitudinal members 11 interconnected by two cross members 12, the longitudinal longitudinal members 11 being disposed outside the wheels 2 and extending at a height greater than 1 2.
  • the crosspieces 12 extend perpendicularly to the longitudinal longitudinal members 11 and have a lowered central portion, disposed within the zone delimited by the four wheels 2, extending at a height less than the axis. wheels 2 and to release the maximum space between the wheels 2 for the establishment of a floor.
  • the longitudinal longitudinal members 11 support, on their upper face, secondary suspension members 4 intended to receive the body of the tramway via a load crossbar, not shown.
  • Each longitudinal spar 11 also supports a traction motor 5 which is arranged laterally under the spar 11 so that the axis of the motor 5 is external to the longitudinal plane of the two wheels 2 of the undercarriage.
  • These motors 5 comprise a rotor provided with two output shafts, each of the output shafts being connected to the nearest wheel 2 by means of a telescopic transmission 6 with double universal joint, itself connected to a gearbox 7 with bevel gears mounted directly on the shaft of the wheel 2.
  • Each gearbox 7 is mounted outside the plane of the wheel 2 and comprises a casing incorporating the axle box of the wheel 2, the casing of the gearbox 7 also serving as a two-member support member of the primary suspension 3 of known type, sandwiched with metal plates and elastomeric material, as can be seen in FIG.
  • Secondary cross-members 8 interconnect the gearbox housings 7 of the two undercarriages, these crosspieces 8 being disposed on either side of each wheel 2, at a height that is substantially identical to the height of the lowered central portion of the wheels. cross members 12 of the chassis 1. These secondary cross members 8 maintain the spacing and parallelism between the wheels 2 of the two undercarriages.
  • Each undercarriage comprises a wheel 2 comprising a wheel shaft passing through the casing of the gearbox 7 towards the outside of the bogie and having an end secured to a brake disc 9, the latter cooperating with a fixed brake caliper 10 to the longitudinal spar 11 and to the housing of the gearbox 7.
  • These braking members constituted by the disc 9 and the stirrup 10, allow braking all of the two wheels 2 of the undercarriage, the latter being mechanically coupled by the rotor common traction motor 5.
  • the motor bogie previously described by integrating the axle boxes in the gearbox housings and using these housings as a support element for the primary suspension members, has the advantage of having a space between the wheels completely free up to at the height of the lowered sleepers of the frame, which allows for a low floor having, at the level of the bogies, a width close to the spacing between the wheels.
  • axle boxes in the gearbox housings ensures not only reduced space and weight saving, but also frees up space for the installation of brake components outside the gearboxes. wheels, the latter then having the advantage of easy maintenance.
  • a braking installation also makes it possible to use brake disks and braking calipers identical to those used on the simply carrying bogies equipping the railway vehicle, which makes it possible to standardize the braking members between the motor bogies and the carrying bogies and therefore to reduce the cost of manufacturing and maintenance of the braking components of the railway vehicle.
  • the implementation of a gearbox directly coupled to the wheel and connected to the motor by a telescopic transmission has the advantage of generating a lower torque at the telescopic transmission compared to the torque transmitted by the gearbox to the wheel, which makes it possible to have telescopic transmissions with little space.
  • the traction motor with double output shaft of the undercarriages can be replaced by a traction motor with two rotors mechanically independent and arranged one behind the other or two motors of traction.
  • each wheel shaft may for example be equipped with a brake disc so as to ensure braking on all four wheels.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The powered bogie comprises a chassis (1) resting on four wheels (2) by means of a primary suspension (3). The chassis supports a motor (5) connected to a wheel by a transmission. Each wheel comprises an individual wheel shaft supported by an axle box. The transmission comprises a reducer (7) directly coupled to the wheel shaft and a double cardan joint telescopic transmission (6) located between the reducer and the motor. The reducer is placed outside the wheel and comprises a casing integrating the wheel shaft axle box. The reducer casing supports the primary suspension.

Description

L'invention se rapporte à un bogie moteur pour véhicule ferroviaire à plancher bas intégral et plus particulièrement à un bogie comportant un châssis reposant sur quatre roues par l'intermédiaire d'une suspension primaire, le châssis supportant au moins un moteur disposé sur un côté du châssis et relié à au moins une roue par des moyens de transmission.The invention relates to a motor bogie for a railway vehicle with an integral low floor, and more particularly to a bogie comprising a chassis resting on four wheels via a primary suspension, the chassis supporting at least one motor arranged on one side. of the chassis and connected to at least one wheel by transmission means.

L'invention convient notamment aux tramways pour lesquels un plancher bas permet de faciliter l'accès et la sortie aux enfants, personnes âgés et handicapés.The invention is particularly suitable for trams for which a low floor can facilitate access and exit to children, the elderly and disabled.

Il est connu, de la demande de brevet FR 2 637 861 déposée par la demanderesse, un bogie moteur pour véhicule ferroviaire à plancher bas comportant un châssis reposant sur deux essieux par l'intermédiaire d'une suspension primaire, le châssis supportant des moteurs de tractions disposés latéralement sur le bogie et reliés aux roues par des moyens de transmission disposés à l'extérieur des roues. Un tel bogie présente toutefois l'inconvénient de posséder des essieux et des boites d'essieu qui encombrent l'espace entre les roues et obligent donc à disposer le plancher au-dessus des essieux.It is known, from the patent application FR 2,637,861 filed by the applicant, a bogie for low floor rail vehicle comprising a chassis resting on two axles via a primary suspension, the chassis supporting engines of tractions arranged laterally on the bogie and connected to the wheels by transmission means arranged outside the wheels. Such a bogie, however, has the disadvantage of having axles and axle boxes that clutter the space between the wheels and therefore require to arrange the floor above the axles.

Le document EP-B1-0 698 540 divulgue un bogie moteur pour véhicule ferroviaire à plancher bas comportant un châssis reposant sur quatre roues montées individuellement, sans liaison par arbre d'essieu, et supportant deux moteurs disposés latéralement sur le bogie. Chaque moteur comporte deux arbres de sortie directement reliés à un réducteur disposé à l'extérieur des roues et relié à l'une des roues par un accouplement de type arbre creux autorisant un débattement vertical de la roue. Un tel bogie présente l'avantage de ne pas posséder de liaison par arbre d'essieu entre les roues individuelles, ce qui permet d'abaisser d'avantage le plancher, mais présente toutefois l'inconvénient de comporter des arbres des roues qui sont guidés par des boites d'essieu disposées à l'intérieur des roues, ce qui encombre l'espace à intérieur des roues et limite donc la largeur disponible pour le plancher au niveau des bogies.Document EP-B1-0 698 540 discloses a low-floor rail vehicle engine bogie comprising a chassis resting on four individually mounted wheels, without an axle shaft connection, and supporting two motors arranged laterally on the bogie. Each motor has two output shafts directly connected to a gearbox disposed outside the wheels and connected to one of the wheels by a hollow shaft type coupling allowing a vertical movement of the wheel. Such a bogie has the advantage of not having an axle shaft connection between the individual wheels, which makes it possible to lower the floor more advantageously, but nevertheless has the disadvantage of having shafts of the wheels which are guided by axle boxes disposed inside the wheels, which encumbers the space inside the wheels and therefore limits the width available for the floor at the bogies.

Un tel bogie présente également l'inconvénient de comporter des organes de freinage qui sont placés au niveau des réducteurs et qui sont donc spécifiques au bogie moteur, ce qui conduit à avoir sur un véhicule ferroviaire des organes de freinage qui sont différents sur les bogies moteurs et sur les bogies porteurs ce qui complique les opérations de maintenance.Such a bogie also has the disadvantage of including braking members which are placed at the level of the gear units and which are therefore specific to the engine bogie, which leads to having on a railway vehicle braking devices which are different on the motor bogies and on the carrier bogies which complicates maintenance operations.

Un bogie selon le préambule de la revendication 1 est quant à lui connu du document DE-OS-2910392.A bogie according to the preamble of claim 1 is known from DE-OS-2910392.

Un but de la présente invention est donc de remédier à ces différents inconvénients en proposant un bogie moteur pour véhicule ferroviaire à plancher bas intégral qui permette d'avoir un plancher au niveau du bogie s'étendant à une très faible hauteur et sur une largeur proche de l'écartement des roues. Un autre but de la présente invention est de proposer un bogie moteur pour véhicule ferroviaire qui comporte des organes de freinages facilement accessibles et qui puissent indifféremment équiper des bogies porteurs ou moteurs.An object of the present invention is therefore to overcome these disadvantages by proposing a motor bogie for rail vehicle with low floor integral that allows a floor at the bogie extending to a very low height and a near width the wheel spacing. Another object of the present invention is to provide a motor bogie for rail vehicle which comprises easily accessible braking members and which can indifferently equip bogies carriers or engines.

L'invention a pour objet un bogie moteur pour véhicule ferroviaire à plancher bas intégral comportant un châssis reposant sur quatre roues par l'intermédiaire d'une suspension primaire, le châssis supportant au moins un moteur disposé sur un côté du châssis et relié à au moins une roue par des moyens de transmission, que chaque roue comportant un arbre de roue individuel supporté par une boite d'essieu, les moyens de transmission comportant un réducteur couplé directement à l'arbre de la roue et une transmission télescopique, de type à double joint de cardan, disposée entre le réducteur et le moteur, caractérisé en ce que le réducteur est placé à l'extérieur de la roue et comporte un carter intégrant la boite d'essieu de l'arbre de la roue, le carter du réducteur servant également d'élément support à un organe de suspension primaire sur lequel s'appuie le châssis.The invention relates to a motor truck for a low-floor railway vehicle comprising a chassis resting on four wheels by means of a primary suspension, the chassis supporting at least one motor arranged on one side of the chassis and connected to least one wheel by transmission means, each wheel having an individual wheel shaft supported by an axle box, the transmission means comprising a gearbox coupled directly to the wheel shaft and a telescopic transmission, type to double universal joint, arranged between the gearbox and the engine, characterized in that the gearbox is placed outside the wheel and comprises a housing incorporating the axle box of the wheel shaft, the gearbox housing also serving as a support element to a primary suspension member on which the frame is supported.

Selon des modes particuliers de réalisation, le bogie moteur selon l'invention peut comprendre l'une ou plusieurs des caractéristiques suivantes prises isolément ou selon toutes les combinaisons techniquement possibles :

  • deux moteurs sont fixés sur le châssis et disposés longitudinalement de chaque côté du châssis, chaque moteur entraînant les deux roues, disposées l'une derrière l'autre sur le côté du châssis, au moyen d'une transmission télescopique de type à double joint de cardan placée entre le moteur et un réducteur couplé directement à l'arbre de la roue, chaque réducteur comportant un carter intégrant la boite d'essieu de la roue et servant d'élément support à un organe de suspension primaire ;
  • au moins une roue comporte un arbre traversant le carter du réducteur vers l'extérieur du bogie, l'arbre de la roue étant solidaire d'un disque de frein monté à l'extérieur du réducteur ;
  • chaque côté du bogie comporte une roue munie d'un arbre traversant le carter du réducteur et solidaire d'un disque de frein, ce dernier étant monté à l'extérieur du réducteur et du coté extérieur à la roue ;
  • les moteurs comportent un seul rotor muni de deux arbres de sortie débouchant respectivement sur deux faces opposées ;
  • les organes de suspensions primaires sont constitués d'un sandwich de plaques métalliques et de matériau élastomère et sont interposés entre une surface d'appui de la face extérieure des carters des réducteurs et une surface d'appui du châssis ;
  • le châssis est constitué de deux longerons longitudinaux disposés à l'extérieur des roues et reliés entre eux par des traverses possédant une partie centrale abaissée s'étendant en dessous du niveau de l'axe des roues.
According to particular embodiments, the motor bogie according to the invention may comprise one or more of the following characteristics taken separately or in any technically possible combination:
  • two motors are fixed to the frame and arranged longitudinally on each side of the frame, each motor driving the two wheels, arranged one behind the other on the side of the frame, by means of a telescopic transmission type double seal gimbal placed between the motor and a gearbox coupled directly to the wheel shaft, each gearbox having a casing incorporating the axle box of the wheel and serving as a support member to a primary suspension member;
  • at least one wheel has a shaft passing through the housing of the gearbox towards the outside of the bogie, the wheel shaft being integral with a brake disc mounted outside the gearbox;
  • each side of the bogie comprises a wheel provided with a shaft passing through the housing of the gearbox and secured to a brake disc, the latter being mounted outside the gearbox and the outer side to the wheel;
  • the motors comprise a single rotor provided with two output shafts opening respectively on two opposite faces;
  • the primary suspension members consist of a sandwich of metal plates and elastomeric material and are interposed between a bearing surface of the outer face of the gearbox housings and a bearing surface of the frame;
  • the frame consists of two longitudinal longitudinal members arranged outside the wheels and interconnected by cross members having a lowered central portion extending below the level of the axis of the wheels.

On comprendra mieux les buts, aspects et avantages de la présente invention, d'après la description donnée ci-après d'un mode particulier de réalisation de l'invention, présenté à titre d'exemple non limitatif, en se référant aux dessins annexés, dans lesquels :

  • la figure 1 est une vue de dessus, d'un bogie moteur pour véhicule ferroviaire à plancher bas selon un mode particulier de réalisation de l'invention ;
  • la figure 2 est une vue en perspective du bogie moteur de la figure 1.
The aims, aspects and advantages of the present invention will be better understood from the following description of a particular embodiment of the invention, presented by way of nonlimiting example, with reference to the appended drawings. , wherein :
  • Figure 1 is a top view of a motor bogie for low floor rail vehicle according to a particular embodiment of the invention;
  • FIG. 2 is a perspective view of the motor bogie of FIG.

Pour faciliter la lecture du dessin, seuls les éléments nécessaires à la compréhension de l'invention ont été représentés. Les mêmes éléments portent les mêmes références d'une figure à l'autre.To facilitate the reading of the drawing, only the elements necessary for the understanding of the invention have been represented. The same elements bear the same references from one figure to another.

Les figures 1 et 2 représentent un bogie moteur de tramway comportant un châssis 1 reposant sur quatre roues 2 par l'intermédiaire d'une suspension primaire 3 autorisant un débattement vertical de l'ordre de +/- 15 mm. Les quatre roues 2 sont réparties de manière classique suivant deux trains de roulement destinés chacun à venir sur un rail de la voie ferrée, les roues 2 comportant chacune un arbre de roue individuel monté sur une boite d'essieu et n'étant pas reliées entre elles par un arbre d'essieu.FIGS. 1 and 2 show a tram motor bogie comprising a chassis 1 resting on four wheels 2 by means of a primary suspension 3 allowing a vertical deflection of the order of +/- 15 mm. The four wheels 2 are conventionally distributed according to two running gear each intended to come on a rail of the track, the wheels 2 each having an individual wheel shaft mounted on an axle box and not being interconnected by an axle shaft.

Conformément à la figure 2, le châssis 1 comporte une structure constituée principalement par deux longerons longitudinaux 11 reliés entre eux par deux traverses 12, les longerons longitudinaux 11 étant disposés à l'extérieur des roues 2 et s'étendant à une hauteur supérieure à l'axe des roues 2. Les traverses 12 s'étendent perpendiculairement aux longerons longitudinaux 11 et possèdent une partie centrale abaissée, disposée à l'intérieure de la zone délimitée par les quatre roues 2, s'étendant à une hauteur inférieure à l'axe des roues 2 et permettant de libérer le maximum d'espace entre les roues 2 pour la mise en place d'un plancher.According to FIG. 2, the chassis 1 comprises a structure consisting mainly of two longitudinal longitudinal members 11 interconnected by two cross members 12, the longitudinal longitudinal members 11 being disposed outside the wheels 2 and extending at a height greater than 1 2. The crosspieces 12 extend perpendicularly to the longitudinal longitudinal members 11 and have a lowered central portion, disposed within the zone delimited by the four wheels 2, extending at a height less than the axis. wheels 2 and to release the maximum space between the wheels 2 for the establishment of a floor.

Les longerons longitudinaux 11 supportent, sur leur face supérieure, des organes de suspensions secondaires 4 destinés à recevoir la caisse du tramway par l'intermédiaire d'une traverse de charge, non représentée.The longitudinal longitudinal members 11 support, on their upper face, secondary suspension members 4 intended to receive the body of the tramway via a load crossbar, not shown.

Chaque longeron longitudinal 11 supporte également un moteur de traction 5 qui est disposé latéralement sous le longeron 11 de telle sorte que l'axe du moteur 5 soit extérieur au plan longitudinal des deux roues 2 du train de roulement. Ces moteurs 5 comportent un rotor muni de deux arbres de sortie, chacun des arbres de sortie étant relié à la roue 2 la plus proche par l'intermédiaire d'une transmission télescopique 6 à double joint de cardan, elle-même reliée à un réducteur 7 à engrenages coniques monté directement sur l'arbre de la roue 2.Each longitudinal spar 11 also supports a traction motor 5 which is arranged laterally under the spar 11 so that the axis of the motor 5 is external to the longitudinal plane of the two wheels 2 of the undercarriage. These motors 5 comprise a rotor provided with two output shafts, each of the output shafts being connected to the nearest wheel 2 by means of a telescopic transmission 6 with double universal joint, itself connected to a gearbox 7 with bevel gears mounted directly on the shaft of the wheel 2.

Chaque réducteur 7 est monté à l'extérieur du plan de la roue 2 et comporte un carter intégrant la boite d'essieu de la roue 2, le carter du réducteur 7 servant également d'élément support à deux organes de la suspension primaire 3 de type connu, en sandwich de plaques métalliques et de matériau élastomère, comme on peut le voir sur la figure 2.Each gearbox 7 is mounted outside the plane of the wheel 2 and comprises a casing incorporating the axle box of the wheel 2, the casing of the gearbox 7 also serving as a two-member support member of the primary suspension 3 of known type, sandwiched with metal plates and elastomeric material, as can be seen in FIG.

Des traverses secondaires 8 relient entre eux les carters des réducteurs 7 des deux trains de roulement, ces traverses 8 étant disposées de part et d'autre de chaque roue 2, à une hauteur sensiblement identique à la hauteur de la partie centrale abaissée des traverses 12 du châssis 1. Ces traverses secondaires 8 assurent le maintien de l'écartement et du parallélisme entre les roues 2 des deux trains de roulement.Secondary cross-members 8 interconnect the gearbox housings 7 of the two undercarriages, these crosspieces 8 being disposed on either side of each wheel 2, at a height that is substantially identical to the height of the lowered central portion of the wheels. cross members 12 of the chassis 1. These secondary cross members 8 maintain the spacing and parallelism between the wheels 2 of the two undercarriages.

Chaque train de roulement comporte une roue 2 comprenant un arbre de roue traversant le carter du réducteur 7 en direction de l'extérieur du bogie et présentant une extrémité solidaire d'un disque de frein 9, ce dernier coopérant avec un étrier de frein 10 fixé au longeron longitudinal 11 et au carter du réducteur 7. Ces organes de freinage, constitués par le disque 9 et l'étrier 10, permettent de freiner l'ensemble des deux roues 2 du train de roulement, ces dernières étant accouplées mécaniquement par le rotor commun du moteur de traction 5.Each undercarriage comprises a wheel 2 comprising a wheel shaft passing through the casing of the gearbox 7 towards the outside of the bogie and having an end secured to a brake disc 9, the latter cooperating with a fixed brake caliper 10 to the longitudinal spar 11 and to the housing of the gearbox 7. These braking members, constituted by the disc 9 and the stirrup 10, allow braking all of the two wheels 2 of the undercarriage, the latter being mechanically coupled by the rotor common traction motor 5.

Le bogie moteur précédemment décrit, en intégrant les boites d'essieu dans les carters des réducteurs et en utilisant ces carters comme élément d'appui pour les organes de la suspension primaire, présente l'avantage de posséder un espace entre les roues totalement libre jusqu'à hauteur des traverses abaissées du châssis, ce qui permet de réaliser un plancher bas présentant, au niveau des bogies, une largeur proche de l'écartement entre les roues .The motor bogie previously described, by integrating the axle boxes in the gearbox housings and using these housings as a support element for the primary suspension members, has the advantage of having a space between the wheels completely free up to at the height of the lowered sleepers of the frame, which allows for a low floor having, at the level of the bogies, a width close to the spacing between the wheels.

De plus, l'intégration des boites d'essieu dans les carter des réducteurs assure non seulement un encombrement réduit et un gain de masse, mais permet également de libérer de la place pour l'installation d'organes de freinage à l'extérieur des roues, ces derniers présentant alors l'avantage d'une maintenance aisée. Une telle installation de freinage permet aussi d'utiliser des disques de frein et des étriers de freinage identiques à ceux utilisés sur les bogies simplement porteurs équipant le véhicule ferroviaire, ce qui permet de standardiser les organes de freinage entre les bogies moteurs et les bogies porteurs et donc de réduire le coût de fabrication et de maintenance des organes de freinage du véhicule ferroviaire.In addition, the integration of the axle boxes in the gearbox housings ensures not only reduced space and weight saving, but also frees up space for the installation of brake components outside the gearboxes. wheels, the latter then having the advantage of easy maintenance. Such a braking installation also makes it possible to use brake disks and braking calipers identical to those used on the simply carrying bogies equipping the railway vehicle, which makes it possible to standardize the braking members between the motor bogies and the carrying bogies and therefore to reduce the cost of manufacturing and maintenance of the braking components of the railway vehicle.

Enfin, l'implantation d'un réducteur directement couplé à la roue et relié au moteur par une transmission télescopique a l'avantage de générer un plus faible couple au niveau de la transmission télescopique par rapport au couple transmis par le réducteur à la roue, ce qui permet d'avoir des transmissions télescopiques peu encombrantes.Finally, the implementation of a gearbox directly coupled to the wheel and connected to the motor by a telescopic transmission has the advantage of generating a lower torque at the telescopic transmission compared to the torque transmitted by the gearbox to the wheel, which makes it possible to have telescopic transmissions with little space.

Bien entendu, l'invention n'est nullement limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention.Of course, the invention is not limited to the embodiment described and illustrated which has been given by way of example. Modifications are possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Ainsi, dans une variante de réalisation non représentée, le moteur de traction à double arbre de sortie des trains de roulement peut être remplacé par un moteur de traction à deux rotors mécaniquement indépendant et disposés l'un derrière l'autre ou par deux moteurs de traction. Dans un tel cas, chaque arbre de roue peut par exemple être équipé d'un disque de frein de manière à assurer le freinage sur l'ensemble des quatre roues.Thus, in a variant of embodiment not shown, the traction motor with double output shaft of the undercarriages can be replaced by a traction motor with two rotors mechanically independent and arranged one behind the other or two motors of traction. In such a case, each wheel shaft may for example be equipped with a brake disc so as to ensure braking on all four wheels.

Claims (7)

  1. Motored bogie for an integral low-floor railway vehicle comprising a chassis (1) resting on four wheels (2) by means of a primary suspension (3), said chassis (1) supporting at least one motor (5) placed on one side of the chassis (1) and connected to at least one wheel (2) by a drive system (6, 7), each wheel (2) comprising an individual wheel shaft supported by a journal box, said drive system comprising an outlet reducer (7) directly coupled to the shaft of said wheel (2) and a telescopic drive system (6), of the type with a double universal joint, placed between the outlet reducer (7) and the motor (5), characterised in that the outlet reducer (7) is placed on the outside of the wheel (2) and comprises a case containing the journal box of the wheel shaft (2), said outlet reducer case (7) also acting as a support element for a primary suspension element (3) on which the chassis (1) rests.
  2. Motored bogie according to claim 1, characterised in that it comprises two motors (5) fixed to the chassis (1) and placed longitudinally on either side of the chassis (1), each motor (5) driving the two wheels (2), placed one in front of the other on the side of the chassis (1), by means of a telescopic drive system (6) of the type with a double universal joint placed between the motor (5) and an outlet reducer (7) coupled directly to the wheel shaft (2), each outlet reducer (7) comprising a case that contains the journal box of the wheel (2) and acts as a support element for a primary suspension member (3).
  3. Motored bogie according to either one of the claims 1 or 2, characterised in that at least one wheel (2) comprises a shaft passing through the outlet reducer case (7) towards the outside of the bogie, said wheel shaft (2) being solidly attached to a brake disc (9) mounted on the outside of the outlet reducer (7).
  4. Motored bogie according to claims 2 and 3, characterised in that each side of the bogie comprises a wheel (2) equipped with a shaft passing through the outlet reducer case (7) and solidly attached to a brake disc (9), said brake disc (9) being mounted on the outside of the outlet reducer (7) and on the outside of the wheel (2).
  5. Motored bogie according to any one of the claims from 1 to 4, characterised in that said motors (5) comprise a single rotor equipped with two output shafts, each pointing in opposite directions.
  6. Motored bogie according to any one of the claims from 1 to 5, characterised in that said primary suspension members (3) consist of a sandwich of metal plates and plates of an elastomer material and are placed between a bearing surface of the outside face of the outlet reducer cases (7) and a bearing surface of the chassis (1).
  7. Motored bogie according to any one of the claims from 1 to 6, characterised in that said chassis (1) consists of two longitudinal sills (11) placed on the outside of the wheels (2) and connected with each other by means of bolsters (12) having a central lowered section extending below the height of the wheel spindles (2)
EP02291504A 2001-06-26 2002-06-17 Motorized bogie for a low-floor railway vehicle Expired - Lifetime EP1270359B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0108425 2001-06-26
FR0108425A FR2826328B1 (en) 2001-06-26 2001-06-26 MOTOR BOGIE FOR RAILWAY VEHICLE WITH INTEGRAL LOW FLOOR

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EP1270359A1 EP1270359A1 (en) 2003-01-02
EP1270359B1 true EP1270359B1 (en) 2006-12-20

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US (1) US6601520B2 (en)
EP (1) EP1270359B1 (en)
JP (1) JP3983114B2 (en)
AT (1) ATE348742T1 (en)
AU (1) AU779297B2 (en)
CA (1) CA2391566C (en)
DE (1) DE60216855T2 (en)
ES (1) ES2273981T3 (en)
FR (1) FR2826328B1 (en)

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EP3159236B1 (en) 2015-10-23 2019-03-20 ALSTOM Transport Technologies Railway vehicle having a lowered bogie
RU2715669C2 (en) * 2015-10-23 2020-03-02 Альстом Транспорт Текнолоджис Trolley for completely two-storied railway vehicle
CN110843841A (en) * 2019-11-27 2020-02-28 衡阳市利美电瓶车制造有限责任公司 Rail electric flat carriage
CN110843841B (en) * 2019-11-27 2021-08-03 湖南利美防爆装备制造股份有限公司 Rail electric flat carriage

Also Published As

Publication number Publication date
ATE348742T1 (en) 2007-01-15
JP3983114B2 (en) 2007-09-26
FR2826328B1 (en) 2003-08-29
AU779297B2 (en) 2005-01-13
AU4891902A (en) 2003-01-02
CA2391566A1 (en) 2002-12-26
DE60216855D1 (en) 2007-02-01
US6601520B2 (en) 2003-08-05
FR2826328A1 (en) 2002-12-27
JP2003025989A (en) 2003-01-29
US20020195018A1 (en) 2002-12-26
ES2273981T3 (en) 2007-05-16
CA2391566C (en) 2008-08-12
EP1270359A1 (en) 2003-01-02
DE60216855T2 (en) 2007-08-30

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