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EP2883773B1 - Motor bogie for a rail vehicle in which the motor is substantially coaxial with the wheel axle - Google Patents

Motor bogie for a rail vehicle in which the motor is substantially coaxial with the wheel axle Download PDF

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Publication number
EP2883773B1
EP2883773B1 EP14196889.1A EP14196889A EP2883773B1 EP 2883773 B1 EP2883773 B1 EP 2883773B1 EP 14196889 A EP14196889 A EP 14196889A EP 2883773 B1 EP2883773 B1 EP 2883773B1
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EP
European Patent Office
Prior art keywords
motor
axle
bogie
chassis
relative
Prior art date
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EP14196889.1A
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German (de)
French (fr)
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EP2883773A1 (en
Inventor
Alain Rodet
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Alstom Transport Technologies SAS
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Alstom Transport Technologies SAS
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Priority to PL14196889T priority Critical patent/PL2883773T3/en
Publication of EP2883773A1 publication Critical patent/EP2883773A1/en
Application granted granted Critical
Publication of EP2883773B1 publication Critical patent/EP2883773B1/en
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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
    • B61C9/44—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with hollow transmission shaft concentric with wheel axis
    • 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
    • B61C9/48—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension
    • B61C9/50—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension in bogies

Definitions

  • the present invention relates to a railway vehicle motor bogie, of the type comprising at least one pair of wheels, the wheels of the or each pair being connected to each other by a shaft to form an axle, the bogie further comprising a motor to drive the axle in rotation about its axis.
  • a bogie is for example disclosed in the document JP-H08244605 A .
  • each motorized bogie In a railway vehicle, each motorized bogie, or motor bogie, generally comprises two pairs of wheels, the wheels of a pair being connected to each other by a shaft to form an axle, a chassis connecting said axles. one to the other, suspensions each interposed between a half-chassis and an axle, said suspension allowing a relative vertical displacement of the axle relative to the corresponding half-chassis, and means for driving in rotation one axles or each axle.
  • These drive means comprise at least one motor and a kinematic chain ensuring the transmission of the engine torque from the engine to the axle, as well as the transmission of the braking torque from the axle to the engine.
  • the drive means are differentiated by the distribution of their masses which are either “unsprung”, that is to say linked to the axle, or “suspended”, that is to say linked to the chassis of bogie above the suspensions.
  • These drive means are distinguished by their ease of integration into the bogie in terms of size, whether in width (that is to say parallel to the axis of the axle) or in length (parallel in the direction of travel of the vehicle). They differ in complexity by the number of parts they include.
  • EP 1,320,478 a railway vehicle bogie in which the motor is mounted between the wheels of the axle, the motor rotor being integral with the axle and the stator being mounted on the axle by means of bearings, so that the motor is unsprung.
  • a reaction rod articulated to the stator and to the bogie chassis makes it possible to take up the torques and ensure the travel due to movements between the bogie chassis and the axle.
  • the drive means are thus particularly compact. However, they have the disadvantage of having high unsprung masses, which limits the speed of the vehicle. In addition, with constant track and wheel diameter, it is very difficult to increase the driving torque exerted on the axle.
  • Rail vehicles are also known comprising wide low corridors. Such vehicles are generally called “low-floor vehicles”.
  • low-floor vehicles For these vehicles, it is necessary to design specific bogies so that the low central corridor can extend over the entire length of the vehicle, without steps, while passing over the bogies.
  • the central space of the bogie extending longitudinally between the wheels, must be as clear as possible.
  • EP 2,142,411 describes a bogie specially designed for a low-floor vehicle, allowing the fitting of a wide low central corridor in the body of the body, so as to allow access without steps to the whole vehicle.
  • This objective is achieved in particular thanks to a specific arrangement of the engine, which is arranged along an outer edge of the bogie, while being oriented parallel to the direction of travel of the vehicle. If this arrangement effectively clears the central space, it has the disadvantage of requiring an elevation of the floor above the space occupied by the engine, which has the consequence of complicating access to certain parts of the vehicle. rail.
  • An object of the invention is to propose a motor bogie for a rail vehicle making it possible to fit a wide, low corridor in the body of the body, without requiring significant steps to be made in the floor of the rail vehicle to pass over the bogie.
  • the driving bogie incorporates axle drive means which are both compact and powerful, that said drive means are simple to implement, and that the unsprung masses are reduced.
  • the invention relates to a bogie according to claim 1.
  • the motor bogie is according to any one of claims 2 to 9.
  • a horizontal plane is substantially parallel to the plane in which the axles extend and the vertical plane is substantially parallel to the plane in which the wheels extend.
  • the term “longitudinal” is defined with respect to the direction in which a rail vehicle extends in a horizontal plane and the term “transverse” is defined in a direction substantially perpendicular to the longitudinal direction in a horizontal plane.
  • Each of the motor bogies 10 represented on the Figure 1 and 3 , comprises two pairs of wheels 20, the wheels 20 of each pair being connected to each other by a shaft to form an axle 22.
  • the axles 22 are connected to each other by a chassis 24, called interior, comprising two half-chassis each secured to a respective axle 22.
  • internal chassis is meant that the side members 26 of each half-chassis extend inside the template formed by the wheels 20, that is to say that they are arranged between the wheels 20.
  • Each half-frame comprises two longitudinal members 26, extending substantially longitudinally, connected to one another by a cross member (not shown), extending substantially transversely.
  • Each beam 26 rests on axle boxes 28 of an axle 22, said axle boxes 28 being arranged substantially against the wheels 20 of axle 22, between said wheels 20.
  • a primary suspension 30 is interposed between each beam 26 and the axle box 28 on which said beam 26 rests.
  • This primary suspension 30 allows among other things a relative vertical displacement of the axle 22 relative to the half-chassis, that is to say that the half-chassis is movable and suspended relative to the axle 22 in a substantially direction vertical.
  • the two half-chassis are held together so that the axles 22 remain parallel and the bogie 10 does not fold back on itself under the effect of a vertical load.
  • At least one of the axles 22, or both axles 22, is (are) driven (s) in rotation by drive means comprising a motor 34 and a kinematic chain ensuring the transmission of the engine torque from the motor 34 to the axle 22, as well as the transmission of the braking torque from the axle 22 to the motor 34.
  • This kinematic chain comprises a reduction gear 36 and a transmission shaft 38, for the transmission of the drive from the motor 34 to the reduction gear 38.
  • the motor 34 is arranged outside the template formed by the wheels 20. In other words, it is arranged transversely outside the bogie 10 relative to the wheels 20.
  • the motor 34 is also substantially coaxial with the axle 22, except for the deflections authorized by the suspension 30.
  • the motor 34 comprises a rotor 42 and a stator 44.
  • the stator 44 is linked to the chassis 24 by a first connecting member 46.
  • This connecting member 46 is adapted to take up the torques between the stator 44 and the chassis 24.
  • the rotor 42 is coaxial with the stator 44.
  • Bearings 48 ensure the connection of the rotor 42 to the stator 44, while allowing the rotation of the rotor 42 about its axis relative to the stator 44.
  • the rotor 42 is integral in rotation with the shaft 38.
  • the stator 44 is mounted around the rotor 42, so that the motor 34 forms an internal rotor motor.
  • the reduction gear 36 is substantially coaxial with the axle 22.
  • the reduction gear 36 is also disposed outside the template formed by the wheels 20. It is in particular disposed at an opposite axial end of the axle 22 relative to the motor 34, so that the motor 34 and the reduction gear 36, together , transversely frame the axle 22.
  • the reducer 36 is a planetary gear reducer. It comprises, in known manner, a plurality of meshing elements 50, 52, 54, 56, including an inner sun gear 50 forming an input pinion of the reduction gear 36, substantially coaxial with the axle 22, a crown 52 coaxial with the sun gear interior 50, a plurality of satellites 54 interposed between the interior planet gear 50 and the crown 52, each being meshed with the interior planet gear 50 and the crown 52, and a planet carrier 56, coaxial with the interior planet gear 50 and the crown 52, on which each satellite 54 is rotatably mounted around its axis.
  • the inner sun gear 50 is integral in rotation with the shaft 38.
  • the crown 52 is linked to the chassis 24 by a second connecting member 58 adapted to take up the torques between the crown 52 and the chassis 24.
  • the planet carrier 56 is integral of the axle 22, in particular of one of the wheels 20 of the axle 22.
  • the second connecting member 58 is preferably a connecting rod allowing the movements due to movements between the chassis 24 and the axle 22.
  • the reduction gear 36 is thus semi-suspended.
  • the axle 22 is hollow and defines an internal axial tubular cavity 60 opening at two axial ends 62, 64 of the axle 22.
  • the shaft 38 extends in said cavity 60, from one to the other of the axial ends 62, 64.
  • the shaft 38 has two opposite coupling sections 66, 68 each projecting outside the cavity 60 at each of the axial ends 62, 64.
  • each of the coupling sections 66, 68 has ribs 74 each projecting radially from a peripheral face of the section 66, 68 and being axially oriented, said ribs 74 being distributed over the periphery of the section 66, 68 and cooperating with grooves complementary (not shown) formed in the walls in the cavity 70, 72 in which it is received.
  • the shaft 38 is substantially coaxial with the axle 22, that is to say that the axis of the shaft 38 intersects the axis of the axle 22, the angle between the two axes always being, in absolute value, less than 1 °.
  • the bogie 10 also comprises an axle braking device 22, adapted to exert a resistant torque on the axle 22 so as to immobilize it in rotation relative to the chassis 24.
  • this braking device comprises a disc brake 76 and a caliper (not shown), the caliper being integral in translation in the longitudinal direction of the chassis 24 or of the reduction gear 36, and being adapted to clamp the brake disc 76 so as to prevent any displacement of the brake disc 76 relative to the stirrup.
  • the reduction gear 36 is interposed between the brake disc 76 and a wheel 20 of the axle 22.
  • the brake disc 76 is in particular secured to the inner sun gear 50.
  • the motor 34 is suspended.
  • the first connecting member 46 is a rigid connecting member, adapted to rigidly link the motor 34 to the chassis 24.
  • each rib 74 comprises a substantially curved free edge 78, that is to say that the free edge 78 of the rib 74, which constitutes the edge of the rib 74 most radially distant from the axis of the shaft 38 , has an approximate shape of an arc.
  • the coupling sections 66, 68 thus form, with the cavities 70, 72 in which they are received, transmission joints.
  • This type of transmission joint is particularly advantageous because it is simple to produce.
  • other transmission seals are used to couple the shaft 38 to the rotor 42 of the motor 34 and to the inner sun gear 50 of the reduction gear 36.
  • transmission joint we understand a mechanical system allowing the mutual drive of two rotating parts whose axes of rotation occupy variable relative positions during their operation.
  • the outer diameter of the shaft 38 is then between 35 and 45 mm, preferably substantially equal to 40 mm, and the diameter of the tubular cavity 60 is between 85 and 95 mm, preferably substantially equal to 90 mm.
  • the rotor 42 drives the transmission shaft 38 in rotation about its axis. This rotation is transmitted, via the second coupling section 68, to the inner sun gear 50 of the reduction gear 36.
  • the inner sun gear 50 in turn drives the satellites 54 which roll on the crown 52. In doing so, the satellites 54 drive the rotation of the planet carrier 56 about its axis and, therefore, the rotation of the axle 22.
  • the axis of the motor 34 remains fixed relative to the chassis 24, while the axis of the reduction gear 36 follows the displacement of the axle 22. It follows a relative displacement of the axes of the motor 34 and of the reduction gear 36, which, if they remain parallel to each other, are then no longer aligned.
  • the transmission shaft 38 tilts relative to the direction of the axes of the motor 34 and of the reduction gear 36, this tilting being permitted by coupling the shaft 38 to the motor 34 and to the reduction gear 36 by l 'Transmission joints.
  • This embodiment makes it possible to limit the unsprung masses.
  • the motor 34 is semi-suspended.
  • the first connecting member 46 is a connecting rod allowing the movements due to movements between the chassis 24 and the axle 22.
  • the axle 22 includes an outer section 80 projecting outside the template formed by the wheels 20, the rotor 42 defining a cylindrical cavity 82 for receiving said outer section 80 and being mounted on said section 80 by means of bearings 84.
  • the rotor 42 drives the transmission shaft 38 in rotation about its axis. This rotation is transmitted, via the second coupling section 68, to the inner sun gear 50 of the reduction gear 36.
  • the inner sun gear 50 in turn drives the satellites 54 which roll on the crown 52. In doing so, the satellites 54 drive the rotation of the planet carrier 56 about its axis and, therefore, the rotation of the axle 22.
  • the axes of the motor 34 and of the reduction gear 36 together follow the displacement of the axle 22.
  • the said axes thus remain aligned.
  • the shaft 38 therefore does not tilt relative to the axle 22, so that it is possible to reduce the diameter of the tubular cavity 60.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Arrangement Of Transmissions (AREA)

Description

La présente invention concerne un bogie moteur de véhicule ferroviaire, du type comprenant au moins une paire de roues, les roues de la ou chaque paire étant reliées l'une à l'autre par un arbre pour former un essieu, le bogie comprenant en outre un moteur pour entraîner l'essieu en rotation autour de son axe. Un tel bogie est par exemple divulgué dans le document JP-H08244605 A .The present invention relates to a railway vehicle motor bogie, of the type comprising at least one pair of wheels, the wheels of the or each pair being connected to each other by a shaft to form an axle, the bogie further comprising a motor to drive the axle in rotation about its axis. Such a bogie is for example disclosed in the document JP-H08244605 A .

Dans un véhicule ferroviaire, chaque bogie motorisé, ou bogie moteur, comprend généralement deux paires de roues, les roues d'une paire étant reliées l'une à l'autre par un arbre pour former un essieu, un châssis reliant lesdits essieux l'un à l'autre, des suspensions interposées chacune entre un demi-châssis et un essieu, ladite suspension permettant un déplacement vertical relatif de l'essieu par rapport au demi-châssis correspondant, et des moyens d'entraînement en rotation de l'un des essieux ou de chaque essieu. Ces moyens d'entraînement comprennent au moins un moteur et une chaîne cinématique assurant la transmission du couple moteur du moteur à l'essieu, ainsi que la transmission du couple de freinage de l'essieu au moteur. Les moyens d'entraînement se différencient par la répartition de leurs masses qui sont soit « non suspendues », c'est-à-dire liées à l'essieu, soit « suspendues », c'est-à-dire liées au châssis de bogie au dessus des suspensions. Ces moyens d'entraînement se différencient par leur facilité d'intégration dans le bogie en terme d'encombrement, que ce soit en largeur (c'est-à-dire parallèlement à l'axe de l'essieu) ou en longueur (parallèlement au sens de marche du véhicule). Ils se différencient en complexité par le nombre de pièces qu'ils comprennent.In a railway vehicle, each motorized bogie, or motor bogie, generally comprises two pairs of wheels, the wheels of a pair being connected to each other by a shaft to form an axle, a chassis connecting said axles. one to the other, suspensions each interposed between a half-chassis and an axle, said suspension allowing a relative vertical displacement of the axle relative to the corresponding half-chassis, and means for driving in rotation one axles or each axle. These drive means comprise at least one motor and a kinematic chain ensuring the transmission of the engine torque from the engine to the axle, as well as the transmission of the braking torque from the axle to the engine. The drive means are differentiated by the distribution of their masses which are either "unsprung", that is to say linked to the axle, or "suspended", that is to say linked to the chassis of bogie above the suspensions. These drive means are distinguished by their ease of integration into the bogie in terms of size, whether in width (that is to say parallel to the axis of the axle) or in length (parallel in the direction of travel of the vehicle). They differ in complexity by the number of parts they include.

Pour réduire les efforts verticaux dans la voie, il est avantageux de diminuer les masses non suspendues. Pour faciliter l'intégration des moyens d'entraînement, il est avantageux de diminuer les encombrements.To reduce the vertical forces in the track, it is advantageous to reduce the unsprung masses. To facilitate the integration of the drive means, it is advantageous to reduce the dimensions.

On connaît de EP 1 320 478 un bogie de véhicule ferroviaire dans lequel le moteur est monté entre les roues de l'essieu, le rotor du moteur étant solidaire de l'essieu et le stator étant monté sur l'essieu par l'intermédiaire de paliers, de sorte que le moteur est non suspendu. Une bielle de réaction articulée au stator et au châssis de bogie permet de reprendre les couples et d'assurer les débattements dus aux mouvements entre le châssis de bogie et l'essieu. Les moyens d'entraînement sont ainsi particulièrement compacts. Ils présentent cependant l'inconvénient d'avoir des masses non suspendues élevées, ce qui limite la vitesse du véhicule. En outre, à voie et diamètre de roue constants, il est très difficile d'augmenter le couple moteur exercé sur l'essieu.We know of EP 1,320,478 a railway vehicle bogie in which the motor is mounted between the wheels of the axle, the motor rotor being integral with the axle and the stator being mounted on the axle by means of bearings, so that the motor is unsprung. A reaction rod articulated to the stator and to the bogie chassis makes it possible to take up the torques and ensure the travel due to movements between the bogie chassis and the axle. The drive means are thus particularly compact. However, they have the disadvantage of having high unsprung masses, which limits the speed of the vehicle. In addition, with constant track and wheel diameter, it is very difficult to increase the driving torque exerted on the axle.

On connaît de WO 2006/051046 un bogie de véhicule ferroviaire dans lequel le moteur est monté suspendu entre les roues de l'essieu, le rotor formant un arbre creux sensiblement coaxial à l'essieu. Pour compenser les débattements dus aux mouvements entre le châssis de bogie et l'essieu, des organes d'accouplement tolérant un léger désaxement du rotor relativement à l'axe de l'essieu, disposés aux extrémités axiales du rotor, assurent la transmission de couple entre le rotor et l'essieu. Les masses non suspendues sont ainsi réduites. Toutefois, cette transmission augmente l'encombrement du bogie dans le sens de marche du véhicule. En outre, le moteur dispose de moins d'espace entre les roues, de sorte que la longueur de fer, et donc le couple exercé sur l'essieu, sont plus faibles que dans la solution décrite dans EP 1 320 478 .We know of WO 2006/051046 a rail vehicle bogie in which the motor is mounted suspended between the wheels of the axle, the rotor forming a hollow shaft substantially coaxial with the axle. To compensate for the movements due to movements between the bogie chassis and the axle, coupling members tolerating a slight offset of the rotor relative to the axis of the axle, arranged at the axial ends of the rotor, ensure the transmission of torque. between the rotor and the axle. The unsprung masses are thus reduced. However, this transmission increases the size of the bogie in the direction of travel of the vehicle. In addition, the motor has less space between the wheels, so that the iron length, and therefore the torque exerted on the axle, are lower than in the solution described in EP 1,320,478 .

On connaît par ailleurs des véhicules ferroviaires comprenant des couloirs bas larges. De tels véhicules sont généralement appelés « véhicules à plancher bas ». Pour ces véhicules, il est nécessaire de concevoir des bogies spécifiques de façon à ce que le couloir central bas puisse s'étendre sur toute la longueur du véhicule, sans marche, tout en passant au-dessus des bogies. A cet effet, l'espace central du bogie, s'étendant longitudinalement entre les roues, doit être le plus dégagé possible.Rail vehicles are also known comprising wide low corridors. Such vehicles are generally called "low-floor vehicles". For these vehicles, it is necessary to design specific bogies so that the low central corridor can extend over the entire length of the vehicle, without steps, while passing over the bogies. For this purpose, the central space of the bogie, extending longitudinally between the wheels, must be as clear as possible.

Les bogies décrits dans EP 1 320 478 et WO 2006/051046 ne conviennent pas à ce type de véhicules.The bogies described in EP 1,320,478 and WO 2006/051046 are not suitable for this type of vehicle.

EP 2 142 411 décrit un bogie spécialement conçu pour un véhicule à plancher bas, permettant l'aménagement d'un couloir central bas large dans le châssis de la caisse, de façon à permettre un accès sans marche à tout le véhicule. Cet objectif est atteint notamment grâce à une disposition spécifique du moteur, qui est disposé le long d'un bord extérieur du bogie, en étant orienté parallèlement au sens de marche du véhicule. Si cette disposition permet de dégager efficacement l'espace central, elle présente l'inconvénient de nécessiter une surélévation du plancher au-dessus de l'espace occupé par le moteur, ce qui a pour conséquence de compliquer l'accès à certaines parties du véhicule ferroviaire. EP 2,142,411 describes a bogie specially designed for a low-floor vehicle, allowing the fitting of a wide low central corridor in the body of the body, so as to allow access without steps to the whole vehicle. This objective is achieved in particular thanks to a specific arrangement of the engine, which is arranged along an outer edge of the bogie, while being oriented parallel to the direction of travel of the vehicle. If this arrangement effectively clears the central space, it has the disadvantage of requiring an elevation of the floor above the space occupied by the engine, which has the consequence of complicating access to certain parts of the vehicle. rail.

Un objectif de l'invention est de proposer un bogie moteur de véhicule ferroviaire permettant d'aménager dans le châssis de la caisse un couloir bas large, sans nécessiter la réalisation de marches importantes dans le plancher du véhicule ferroviaire pour passer au-dessus du bogie. D'autres objectifs sont que le bogie moteur intègre des moyens d'entraînement de l'essieu qui soient à la fois compacts et puissants, que lesdits moyens d'entraînement soient simples à mettre en œuvre, et que les masses non suspendues soient réduites.An object of the invention is to propose a motor bogie for a rail vehicle making it possible to fit a wide, low corridor in the body of the body, without requiring significant steps to be made in the floor of the rail vehicle to pass over the bogie. . Other objectives are that the driving bogie incorporates axle drive means which are both compact and powerful, that said drive means are simple to implement, and that the unsprung masses are reduced.

A cet effet, l'invention a pour objet un bogie selon la revendication 1.To this end, the invention relates to a bogie according to claim 1.

Selon des modes de réalisation particuliers de l'invention, le bogie moteur est selon l'une quelconque des revendications 2 à 9.According to particular embodiments of the invention, the motor bogie is according to any one of claims 2 to 9.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, dans lesquels :

  • la Figure 1 est une vue en coupe transversale d'un bogie moteur selon un premier mode de réalisation de l'invention,
  • la Figure 2 est une vue en perspective d'un tronçon d'accouplement d'un arbre de transmission du bogie moteur de la Figure 1,
  • la Figure 3 est une vue en coupe transversale d'un bogie moteur selon un deuxième mode de réalisation de l'invention
Other characteristics and advantages of the invention will appear on reading the description which follows, given solely by way of example and made with reference to the appended drawings, in which:
  • the Figure 1 is a cross-sectional view of a motor bogie according to a first embodiment of the invention,
  • the Figure 2 is a perspective view of a coupling section of a drive shaft of the motor bogie of the Figure 1 ,
  • the Figure 3 is a cross-sectional view of a motor bogie according to a second embodiment of the invention

Dans la suite, les termes « vertical » et « horizontal » sont définis par rapport à un bogie monté dans un véhicule ferroviaire. Ainsi, un plan horizontal est sensiblement parallèle au plan dans lequel s'étendent les essieux et le plan vertical est sensiblement parallèle au plan dans lequel s'étendent les roues. Le terme « longitudinal » est défini par rapport à la direction dans laquelle s'étend un véhicule ferroviaire dans un plan horizontal et le terme « transversal » est défini selon une direction sensiblement perpendiculaire à la direction longitudinale dans un plan horizontal.In the following, the terms "vertical" and "horizontal" are defined with respect to a bogie mounted in a railway vehicle. Thus, a horizontal plane is substantially parallel to the plane in which the axles extend and the vertical plane is substantially parallel to the plane in which the wheels extend. The term "longitudinal" is defined with respect to the direction in which a rail vehicle extends in a horizontal plane and the term "transverse" is defined in a direction substantially perpendicular to the longitudinal direction in a horizontal plane.

Chacun des bogies moteur 10 représentés sur les Figure 1 et 3, comprend deux paires de roues 20, les roues 20 de chaque paire étant reliées l'une à l'autre par un arbre pour former un essieu 22. Les essieux 22 sont reliés l'un à l'autre par un châssis 24, dit intérieur, comprenant deux demi-châssis solidaires chacun d'un essieu 22 respectif. Par châssis intérieur, on entend que des longerons 26 de chaque demi-châssis s'étendent à l'intérieur du gabarit formé par les roues 20, c'est-à-dire qu'ils sont disposés entre les roues 20.Each of the motor bogies 10 represented on the Figure 1 and 3 , comprises two pairs of wheels 20, the wheels 20 of each pair being connected to each other by a shaft to form an axle 22. The axles 22 are connected to each other by a chassis 24, called interior, comprising two half-chassis each secured to a respective axle 22. By internal chassis is meant that the side members 26 of each half-chassis extend inside the template formed by the wheels 20, that is to say that they are arranged between the wheels 20.

Chaque demi-châssis comprend deux longerons 26, s'étendant sensiblement longitudinalement, reliés l'un à l'autre par une traverse (non représentée), s'étendant sensiblement transversalement. Chaque longeron 26 repose sur des boîtes d'essieu 28 d'un essieu 22, lesdites boîtes d'essieu 28 étant disposées sensiblement contre les roues 20 de l'essieu 22, entre lesdites roues 20.Each half-frame comprises two longitudinal members 26, extending substantially longitudinally, connected to one another by a cross member (not shown), extending substantially transversely. Each beam 26 rests on axle boxes 28 of an axle 22, said axle boxes 28 being arranged substantially against the wheels 20 of axle 22, between said wheels 20.

Une suspension primaire 30 est interposée entre chaque longeron 26 et la boîte d'essieu 28 sur laquelle ledit longeron 26 repose. Cette suspension primaire 30 permet entre autre un déplacement vertical relatif de l'essieu 22 par rapport au demi-châssis, c'est-à-dire que le demi-châssis est mobile et suspendu par rapport à l'essieu 22 selon une direction sensiblement verticale.A primary suspension 30 is interposed between each beam 26 and the axle box 28 on which said beam 26 rests. This primary suspension 30 allows among other things a relative vertical displacement of the axle 22 relative to the half-chassis, that is to say that the half-chassis is movable and suspended relative to the axle 22 in a substantially direction vertical.

Les deux demi-châssis sont maintenus l'un à l'autre de sorte que les essieux 22 restent parallèles et que le bogie 10 ne se replie pas sur lui même sous l'effet d'une charge verticale.The two half-chassis are held together so that the axles 22 remain parallel and the bogie 10 does not fold back on itself under the effect of a vertical load.

Au moins un des essieux 22, ou les deux essieux 22, est (sont) entraîné(s) en rotation par des moyens d'entraînement comprenant un moteur 34 et une chaîne cinématique assurant la transmission du couple moteur du moteur 34 à l'essieu 22, ainsi que la transmission du couple de freinage de l'essieu 22 au moteur 34. Cette chaîne cinématique comprend un réducteur 36 et un arbre de transmission 38, pour la transmission de l'entraînement du moteur 34 au réducteur 38.At least one of the axles 22, or both axles 22, is (are) driven (s) in rotation by drive means comprising a motor 34 and a kinematic chain ensuring the transmission of the engine torque from the motor 34 to the axle 22, as well as the transmission of the braking torque from the axle 22 to the motor 34. This kinematic chain comprises a reduction gear 36 and a transmission shaft 38, for the transmission of the drive from the motor 34 to the reduction gear 38.

Le moteur 34 est disposé à l'extérieur du gabarit formé par les roues 20. En d'autres termes, il est disposé transversalement à l'extérieur du bogie 10 relativement aux roues 20.The motor 34 is arranged outside the template formed by the wheels 20. In other words, it is arranged transversely outside the bogie 10 relative to the wheels 20.

Le moteur 34 est également sensiblement coaxial à l'essieu 22, aux débattements autorisés par la suspension 30 près.The motor 34 is also substantially coaxial with the axle 22, except for the deflections authorized by the suspension 30.

Le moteur 34 comprend un rotor 42 et un stator 44.The motor 34 comprises a rotor 42 and a stator 44.

Le stator 44 est lié au châssis 24 par un premier organe de liaison 46. Cet organe de liaison 46 est adapté pour reprendre les couples entre le stator 44 et le châssis 24.The stator 44 is linked to the chassis 24 by a first connecting member 46. This connecting member 46 is adapted to take up the torques between the stator 44 and the chassis 24.

Le rotor 42 est coaxial au stator 44. Des paliers 48 assurent la liaison du rotor 42 au stator 44, tout en permettant la rotation du rotor 42 autour de son axe relativement au stator 44.The rotor 42 is coaxial with the stator 44. Bearings 48 ensure the connection of the rotor 42 to the stator 44, while allowing the rotation of the rotor 42 about its axis relative to the stator 44.

Le rotor 42 est solidaire en rotation de l'arbre 38.The rotor 42 is integral in rotation with the shaft 38.

Le stator 44 est monté autour du rotor 42, de sorte que le moteur 34 forme un moteur à rotor interne.The stator 44 is mounted around the rotor 42, so that the motor 34 forms an internal rotor motor.

Le réducteur 36 est sensiblement coaxial à l'essieu 22.The reduction gear 36 is substantially coaxial with the axle 22.

Le réducteur 36 est également disposé à l'extérieur du gabarit formé par les roues 20. Il est en particulier disposé à une extrémité axiale opposée de l'essieu 22 relativement au moteur 34, de sorte que le moteur 34 et le réducteur 36, ensemble, encadrent transversalement l'essieu 22.The reduction gear 36 is also disposed outside the template formed by the wheels 20. It is in particular disposed at an opposite axial end of the axle 22 relative to the motor 34, so that the motor 34 and the reduction gear 36, together , transversely frame the axle 22.

Le réducteur 36 est un réducteur à train épicycloïdal. Il comprend de façon connue une pluralité d'éléments d'engrènement 50, 52, 54, 56, dont un planétaire intérieur 50 formant un pignon d'entrée du réducteur 36, sensiblement coaxial à l'essieu 22, une couronne 52 coaxiale au planétaire intérieur 50, une pluralité de satellites 54 interposés entre le planétaire intérieur 50 et la couronne 52, chacun étant engrené sur le planétaire intérieur 50 et la couronne 52, et un porte-satellites 56, coaxial au planétaire intérieur 50 et à la couronne 52, sur lequel chaque satellite 54 est monté rotatif autour de son axe.The reducer 36 is a planetary gear reducer. It comprises, in known manner, a plurality of meshing elements 50, 52, 54, 56, including an inner sun gear 50 forming an input pinion of the reduction gear 36, substantially coaxial with the axle 22, a crown 52 coaxial with the sun gear interior 50, a plurality of satellites 54 interposed between the interior planet gear 50 and the crown 52, each being meshed with the interior planet gear 50 and the crown 52, and a planet carrier 56, coaxial with the interior planet gear 50 and the crown 52, on which each satellite 54 is rotatably mounted around its axis.

Le planétaire intérieur 50 est solidaire en rotation de l'arbre 38. La couronne 52 est liée au châssis 24 par un deuxième organe de liaison 58 adapté pour reprendre les couples entre la couronne 52 et le châssis 24. Le porte-satellites 56 est solidaire de l'essieu 22, en particulier de l'une des roues 20 de l'essieu 22.The inner sun gear 50 is integral in rotation with the shaft 38. The crown 52 is linked to the chassis 24 by a second connecting member 58 adapted to take up the torques between the crown 52 and the chassis 24. The planet carrier 56 is integral of the axle 22, in particular of one of the wheels 20 of the axle 22.

Le deuxième organe de liaison 58 est de préférence une bielle autorisant les débattements dus aux mouvements entre le châssis 24 et l'essieu 22. Le réducteur 36 est ainsi semi-suspendu.The second connecting member 58 is preferably a connecting rod allowing the movements due to movements between the chassis 24 and the axle 22. The reduction gear 36 is thus semi-suspended.

Selon l'invention, l'essieu 22 est creux et définit une cavité tubulaire axiale interne 60 débouchant à deux extrémités axiales 62, 64 de l'essieu 22. L'arbre 38 s'étend dans ladite cavité 60, de l'une à l'autre des extrémités axiales 62, 64. L'arbre 38 présente deux tronçons d'accouplement 66, 68 opposées dépassant chacun hors de la cavité 60 à chacune des extrémités axiales 62, 64.According to the invention, the axle 22 is hollow and defines an internal axial tubular cavity 60 opening at two axial ends 62, 64 of the axle 22. The shaft 38 extends in said cavity 60, from one to the other of the axial ends 62, 64. The shaft 38 has two opposite coupling sections 66, 68 each projecting outside the cavity 60 at each of the axial ends 62, 64.

Le rotor 42 définit une première cavité 70 de réception de l'un des tronçons d'accouplement 66, et le planétaire intérieur 50 définit une deuxième cavité 72 de réception de l'autre tronçon d'accouplement 68. De manière plus précise, comme représenté en figure 2, chacun des tronçons d'accouplement 66, 68 présente des nervures 74 faisant chacune saillie radialement depuis une face périphérique du tronçon 66, 68 et étant orientée axialement, lesdites nervures 74 étant réparties sur la périphérie du tronçon 66, 68 et coopérant avec des cannelures complémentaires (non représentées) formées dans les parois dans la cavité 70, 72 dans laquelle il est reçu.The rotor 42 defines a first cavity 70 for receiving one of the coupling sections 66, and the inner sun gear 50 defines a second cavity 72 for receiving the other coupling section 68. More precisely, as shown in figure 2 , each of the coupling sections 66, 68 has ribs 74 each projecting radially from a peripheral face of the section 66, 68 and being axially oriented, said ribs 74 being distributed over the periphery of the section 66, 68 and cooperating with grooves complementary (not shown) formed in the walls in the cavity 70, 72 in which it is received.

L'arbre 38 est sensiblement coaxial à l'essieu 22, c'est-à-dire que l'axe de l'arbre 38 intersecte l'axe de l'essieu 22, l'angle entre les deux axes étant toujours, en valeur absolue, inférieur à 1°.The shaft 38 is substantially coaxial with the axle 22, that is to say that the axis of the shaft 38 intersects the axis of the axle 22, the angle between the two axes always being, in absolute value, less than 1 °.

Le bogie 10 comprend également un dispositif de freinage de l'essieu 22, adapté pour exercer un couple résistant sur l'essieu 22 de façon à l'immobiliser en rotation relativement au châssis 24. De façon connue, ce dispositif de freinage comprend un disque de frein 76 et un étrier (non représenté), l'étrier étant solidaire en translation suivant la direction longitudinale du châssis 24 ou du réducteur 36, et étant adapté pour pincer le disque de frein 76 de façon à empêcher tout déplacement du disque de frein 76 relativement à l'étrier.The bogie 10 also comprises an axle braking device 22, adapted to exert a resistant torque on the axle 22 so as to immobilize it in rotation relative to the chassis 24. In known manner, this braking device comprises a disc brake 76 and a caliper (not shown), the caliper being integral in translation in the longitudinal direction of the chassis 24 or of the reduction gear 36, and being adapted to clamp the brake disc 76 so as to prevent any displacement of the brake disc 76 relative to the stirrup.

Dans l'exemple représenté, le réducteur 36 est interposé entre le disque de frein 76 et une roue 20 de l'essieu 22. Le disque de frein 76 est en particulier solidaire du planétaire intérieur 50.In the example shown, the reduction gear 36 is interposed between the brake disc 76 and a wheel 20 of the axle 22. The brake disc 76 is in particular secured to the inner sun gear 50.

Dans le mode de réalisation de la Figure 1, le moteur 34 est suspendu. A cet effet, le premier organe de liaison 46 est un organe de liaison rigide, adapté pour lier rigidement le moteur 34 au châssis 24.In the embodiment of the Figure 1 , the motor 34 is suspended. To this end, the first connecting member 46 is a rigid connecting member, adapted to rigidly link the motor 34 to the chassis 24.

Les tronçons d'accouplement 66, 68, sont par ailleurs adaptés pour permettre une inclinaison de l'axe de l'arbre de transmission 38 relativement à l'axe du rotor 42 et relativement à l'axe du réducteur 36. A cet effet, comme visible sur la Figure 2, chaque nervure 74 comprend un bord libre 78 sensiblement bombé, c'est-à-dire que le bord libre 78 de la nervure 74, qui constitue le bord de la nervure 74 le plus éloigné radialement de l'axe de l'arbre 38, a une forme approximativement d'arc de cercle.The coupling sections 66, 68 are also adapted to allow an inclination of the axis of the transmission shaft 38 relative to the axis of the rotor 42 and relative to the axis of the reduction gear 36. To this end, as visible on the Figure 2 , each rib 74 comprises a substantially curved free edge 78, that is to say that the free edge 78 of the rib 74, which constitutes the edge of the rib 74 most radially distant from the axis of the shaft 38 , has an approximate shape of an arc.

Les tronçons d'accouplement 66, 68 forment ainsi, avec les cavités 70, 72 dans lesquelles ils sont reçus, des joints de transmission. Ce type de joints de transmission est particulièrement avantageux car il est simple à réaliser. En variante, d'autres joints de transmission sont utilisés pour accoupler l'arbre 38 au rotor 42 du moteur 34 et au planétaire intérieur 50 du réducteur 36.The coupling sections 66, 68 thus form, with the cavities 70, 72 in which they are received, transmission joints. This type of transmission joint is particularly advantageous because it is simple to produce. As a variant, other transmission seals are used to couple the shaft 38 to the rotor 42 of the motor 34 and to the inner sun gear 50 of the reduction gear 36.

On notera que par « joint de transmission », on comprend un système mécanique permettant l'entraînement mutuel de deux pièces tournantes dont les axes de rotation occupent des positions relatives variables pendant leur fonctionnement.It will be noted that by "transmission joint", we understand a mechanical system allowing the mutual drive of two rotating parts whose axes of rotation occupy variable relative positions during their operation.

Le diamètre extérieur de l'arbre 38 est alors compris entre 35 et 45 mm, de préférence sensiblement égal à 40 mm, et le diamètre la cavité tubulaire 60 est compris entre 85 et 95 mm, de préférence sensiblement égal à 90 mm.The outer diameter of the shaft 38 is then between 35 and 45 mm, preferably substantially equal to 40 mm, and the diameter of the tubular cavity 60 is between 85 and 95 mm, preferably substantially equal to 90 mm.

En fonctionnement, le rotor 42 entraîne l'arbre de transmission 38 en rotation autour de son axe. Cette rotation est transmise, par l'intermédiaire du deuxième tronçon d'accouplement 68, au planétaire intérieur 50 du réducteur 36. Le planétaire intérieur 50 entraîne à son tour les satellites 54 qui roulent sur la couronne 52. Ce faisant, les satellites 54 entraînent la rotation du porte-satellites 56 autour de son axe et, de ce fait, la rotation de l'essieu 22.In operation, the rotor 42 drives the transmission shaft 38 in rotation about its axis. This rotation is transmitted, via the second coupling section 68, to the inner sun gear 50 of the reduction gear 36. The inner sun gear 50 in turn drives the satellites 54 which roll on the crown 52. In doing so, the satellites 54 drive the rotation of the planet carrier 56 about its axis and, therefore, the rotation of the axle 22.

En cas de déplacement vertical de l'essieu 22 relativement au châssis 24, l'axe du moteur 34 reste fixe par rapport au châssis 24, alors que l'axe du réducteur 36 suit le déplacement de l'essieu 22. Il s'ensuit un déplacement relatif des axes du moteur 34 et du réducteur 36, qui, s'ils restent parallèles l'un à l'autre, ne sont alors plus alignés. De ce fait, l'arbre de transmission 38 s'incline relativement à la direction des axes du moteur 34 et du réducteur 36, cette inclinaison étant permise grâce à l'accouplement de l'arbre 38 au moteur 34 et au réducteur 36 par l'intermédiaire de joints de transmission.In the event of vertical displacement of the axle 22 relative to the chassis 24, the axis of the motor 34 remains fixed relative to the chassis 24, while the axis of the reduction gear 36 follows the displacement of the axle 22. It follows a relative displacement of the axes of the motor 34 and of the reduction gear 36, which, if they remain parallel to each other, are then no longer aligned. As a result, the transmission shaft 38 tilts relative to the direction of the axes of the motor 34 and of the reduction gear 36, this tilting being permitted by coupling the shaft 38 to the motor 34 and to the reduction gear 36 by l 'Transmission joints.

Ce mode de réalisation permet de limiter les masses non suspendues.This embodiment makes it possible to limit the unsprung masses.

Dans le mode de réalisation de la Figure 3, le moteur 34 est semi-suspendu. A cet effet, le premier organe de liaison 46 est une bielle autorisant les débattements dus aux mouvements entre le châssis 24 et l'essieu 22. En outre, l'essieu 22 comprend un tronçon extérieur 80 dépassant à l'extérieur du gabarit formé par les roues 20, le rotor 42 définissant une cavité cylindrique 82 de réception dudit tronçon extérieur 80 et étant monté sur ledit tronçon 80 par l'intermédiaire de paliers 84.In the embodiment of the Figure 3 , the motor 34 is semi-suspended. To this end, the first connecting member 46 is a connecting rod allowing the movements due to movements between the chassis 24 and the axle 22. In addition, the axle 22 includes an outer section 80 projecting outside the template formed by the wheels 20, the rotor 42 defining a cylindrical cavity 82 for receiving said outer section 80 and being mounted on said section 80 by means of bearings 84.

En fonctionnement, le rotor 42 entraîne l'arbre de transmission 38 en rotation autour de son axe. Cette rotation est transmise, par l'intermédiaire du deuxième tronçon d'accouplement 68, au planétaire intérieur 50 du réducteur 36. Le planétaire intérieur 50 entraîne à son tour les satellites 54 qui roulent sur la couronne 52. Ce faisant, les satellites 54 entraînent la rotation du porte-satellites 56 autour de son axe et, de ce fait, la rotation de l'essieu 22.In operation, the rotor 42 drives the transmission shaft 38 in rotation about its axis. This rotation is transmitted, via the second coupling section 68, to the inner sun gear 50 of the reduction gear 36. The inner sun gear 50 in turn drives the satellites 54 which roll on the crown 52. In doing so, the satellites 54 drive the rotation of the planet carrier 56 about its axis and, therefore, the rotation of the axle 22.

En cas de déplacement vertical de l'essieu 22 relativement au châssis 24, les axes du moteur 34 et du réducteur 36 suivent ensemble le déplacement de l'essieu 22. Lesdits axes restent ainsi alignés. Dans ce deuxième mode de réalisation, l'arbre 38 ne s'incline donc pas par rapport à l'essieu 22, de sorte qu'il est possible de réduire le diamètre de la cavité tubulaire 60.In the event of vertical displacement of the axle 22 relative to the chassis 24, the axes of the motor 34 and of the reduction gear 36 together follow the displacement of the axle 22. The said axes thus remain aligned. In this second embodiment, the shaft 38 therefore does not tilt relative to the axle 22, so that it is possible to reduce the diameter of the tubular cavity 60.

Grâce à l'invention décrite ci-dessus, il est possible d'aménager dans le châssis de la caisse du véhicule ferroviaire auquel est intégré le bogie 10 un couloir bas large, sans nécessiter la réalisation de marches importantes dans le plancher dudit véhicule ferroviaire.Thanks to the invention described above, it is possible to arrange in the chassis of the body of the rail vehicle to which the bogie 10 is integrated a wide wide corridor, without requiring the making of significant steps in the floor of said rail vehicle.

Claims (9)

  1. Motor bogie (10) for a railway vehicle, comprising at least one pair of wheels (20), the wheels (20) of the or each pair being connected to one another by a shaft to form an axle (22), the bogie (10) further comprising a motor (34) for driving the axle (22) in rotation about its axis, the motor (34) being substantially coaxial with the axle (22) while being arranged outside the bogie (10) relative to the wheels (20), and a kinematic chain serving to transmit the driving torque of the motor (34) to the axle (22), said kinematic chain comprising a reducer (36) which is substantially coaxial with the axle (22) and arranged outside the bogie (10) relative to the wheels (20), characterised in that the motor (34) and the reducer (36), together, surround the axle (22).
  2. Motor bogie (10) according to claim 1, wherein the kinematic chain comprises a transmission shaft (38) for transmitting the drive of the motor (34) to the reducer (36), said transmission shaft (38) extending inside the axle (22), which is hollow, from one axial end (62) of the axle (22) to an opposite axial end (64) of the axle (22).
  3. Motor bogie (10) according to claim 2, wherein the kinematic chain comprises a first member (66) for coupling the motor (34) to the transmission shaft (38), which member is adapted to allow the axis of the transmission shaft (38) to be inclined relative to the axis of the motor (34).
  4. Motor bogie (10) according to claim 2 or 3, wherein the kinematic chain comprises a second member (68) for coupling the transmission shaft (38) to an input pinion (50) of the reducer (36), said second coupling member (68) being adapted to allow the axis of the transmission shaft (38) to be inclined relative to the axis of the input pinion (50).
  5. Motor bogie (10) according to any one of the preceding claims, wherein the reducer (36) comprises a gear element (56) secured to the axle (22).
  6. Motor bogie (10) according to any one of the preceding claims, wherein the reducer (36) is a reducer with an epicyclic gear train.
  7. Motor bogie (10) according to any one of the preceding claims, comprising a chassis (24) and a suspension (30) between the chassis (24) and the axle (22), said suspension (30) being arranged to permit a relative vertical displacement of the axle (22) with respect to the chassis (24), the motor (34) being rigidly fixed to the chassis (24).
  8. Motor bogie according to any one of claims 1 to 6, comprising a chassis (24) and a suspension (30) between the chassis (24) and the axle (22), said suspension (30) being arranged to permit a relative vertical displacement of the axle (22) with respect to the chassis (24), and means (46) for connecting the motor (34) to the chassis (24), said connecting means (46) allowing a vertical displacement of the motor (34) relative to the chassis (24).
  9. Motor bogie (10) according to any one of the preceding claims, wherein the motor (34) is an internal rotor motor.
EP14196889.1A 2013-12-11 2014-12-09 Motor bogie for a rail vehicle in which the motor is substantially coaxial with the wheel axle Active EP2883773B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14196889T PL2883773T3 (en) 2013-12-11 2014-12-09 Motor bogie for a rail vehicle in which the motor is substantially coaxial with the wheel axle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1362423A FR3014398B1 (en) 2013-12-11 2013-12-11 BOGIE RAIL VEHICLE ENGINE IN WHICH THE ENGINE IS SUBSTANTIALLY COAXIAL AT THE AXLE

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EP2883773A1 EP2883773A1 (en) 2015-06-17
EP2883773B1 true EP2883773B1 (en) 2020-06-03

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EP14196889.1A Active EP2883773B1 (en) 2013-12-11 2014-12-09 Motor bogie for a rail vehicle in which the motor is substantially coaxial with the wheel axle

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EP (1) EP2883773B1 (en)
CN (1) CN104709294B (en)
ES (1) ES2811701T3 (en)
FR (1) FR3014398B1 (en)
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Publication number Priority date Publication date Assignee Title
WO2017092302A1 (en) * 2015-12-03 2017-06-08 中车株洲电力机车有限公司 Hollow axle structure and wheel set
FR3081787B1 (en) * 2018-06-04 2020-08-28 Alstom Transp Tech ASSEMBLY FOR TRANSMISSION OF A TORQUE FROM A MOTOR TO A REDUCER AND ASSOCIATED MANUFACTURING PROCESS
DE102021207833A1 (en) * 2021-07-22 2023-01-26 Siemens Mobility GmbH Low-floor powered chassis with wheel set axle driven on one side

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Publication number Priority date Publication date Assignee Title
DE1059489B (en) * 1957-10-08 1959-06-18 Deutsche Bundesbahn Auxiliary drive for gears driven by rail vehicle axles
JP2815727B2 (en) * 1991-07-09 1998-10-27 財団法人鉄道総合技術研究所 Drive unit for railway vehicles
JPH08244605A (en) * 1995-03-14 1996-09-24 Toyo Electric Mfg Co Ltd Electric rolling stock driving gear
DE10047911A1 (en) * 2000-09-27 2002-04-18 Siemens Ag Drive a wheelset
WO2006051046A1 (en) 2004-11-11 2006-05-18 Siemens Aktiengesellschaft Semi-suspended direct drive for a rail vehicle
FR2914609B1 (en) 2007-04-05 2009-07-10 Alstom Transport Sa BOGIE FOR RAILWAY VEHICLE
WO2012169017A1 (en) * 2011-06-07 2012-12-13 株式会社日立製作所 Monorail drive device and monorail truck provided therewith

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Publication number Publication date
FR3014398A1 (en) 2015-06-12
FR3014398B1 (en) 2017-05-26
PL2883773T3 (en) 2020-10-19
ES2811701T3 (en) 2021-03-15
CN104709294B (en) 2019-01-22
EP2883773A1 (en) 2015-06-17
CN104709294A (en) 2015-06-17

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