EP2144801B1 - Motor-driven bogie for a streetcar - Google Patents

Motor-driven bogie for a streetcar Download PDF

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Publication number
EP2144801B1
EP2144801B1 EP08799848.0A EP08799848A EP2144801B1 EP 2144801 B1 EP2144801 B1 EP 2144801B1 EP 08799848 A EP08799848 A EP 08799848A EP 2144801 B1 EP2144801 B1 EP 2144801B1
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EP
European Patent Office
Prior art keywords
bogie
wheels
rear wheels
situated
chassis
Prior art date
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Application number
EP08799848.0A
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German (de)
French (fr)
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EP2144801A1 (en
Inventor
Alain Rodet
Jean-Christophe Loiseau
Christophe Eche
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Transport SA
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Alstom Transport SA
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Publication date
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Priority to PL08799848T priority Critical patent/PL2144801T3/en
Publication of EP2144801A1 publication Critical patent/EP2144801A1/en
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Publication of EP2144801B1 publication Critical patent/EP2144801B1/en
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Classifications

    • 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
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D13/00—Tramway vehicles
    • 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
    • B61F3/02—Types of bogies with more than one axle
    • B61F3/04—Types of bogies with more than one axle with driven axles or wheels

Definitions

  • the invention generally relates to rail vehicles, including trams.
  • the invention relates, according to a first aspect, to a motorized truck for a railway vehicle according to the preamble of claim 1.
  • FR-A-2 604 676 describes a streetcar with a body and at least one motorized bogie.
  • This bogie comprises a single engine fixed under the body, and offset longitudinally forwardly relative to the frame of the bogie.
  • the front gearbox is placed between the two front wheels, and is coupled directly to the engine.
  • the rear gearbox is placed outside the wheels and is driven through the front gearbox.
  • Such a bogie has the advantage of allowing the development of a low central corridor in the chassis of the box allowing a stepless access to the entire tram.
  • the integration of the engine in the body structure beyond the bogie area is constraining because it prohibits to provide seats or an access door to the engine right.
  • the series drive of the two reducers is complex from a mechanical point of view.
  • the invention aims to provide a motorized bogie for arranging in the frame of the box a low corridor of great width, but which is mechanically less complex and easier to integrate the body of the tram.
  • the invention relates to a motorized truck for a railway vehicle, according to claim 1.
  • the tramway 10 represented on the figure 1 comprises for example a box 12 of elongate shape in a main direction and provided with a body frame 14, and two bogies 16, each connected to the body 12 and disposed under the frame 14.
  • the body 12 has an interior space of passenger reception 18, bounded down by the frame 14, and seats 20 fixed to the frame 14.
  • the seats 20 are typically arranged in several rows extending perpendicular to the main direction. The seats are oriented so that the passengers sitting on the seats look in the main direction.
  • the bogies 16 are able to support and guide the body 12 when the tramway moves along a path.
  • the frame 22 typically comprises two longitudinal longitudinal members (not shown), and two transverse crosspieces (not shown) rigidly fixed to each other. Only the outer contour of the frame 22 is represented on the figure 2 . This contour is materialized by broken lines.
  • the front wheels 24 are coaxial, spaced transversely from one another, and are connected to the frame 22.
  • the rear wheels 26 are coaxial, spaced transversely from one another, and connected to the frame 22.
  • the front wheels 24 are spaced longitudinally from the rear wheels 26.
  • the transmission means 30 comprise, for example, a front axle 40 linking the front wheels 24 in rotation with each other and a front gearbox 42 for coupling the front wheels 24 to the motor 28.
  • the front gearbox 42 transmits the torque of the motor 28 to one of the front wheels 24, the torque being transmitted from said wheel to the other front wheel 24 by the front axle 40.
  • the front reduction gearbox 42 transmits the torque of the motor 28 to the axle 40, the latter driving the two front wheels 24.
  • the transmission means 30 also comprise a rear axle 44 linking the two rear wheels 26 in rotation with each other and a rear reduction gear 46 for coupling the rear wheels 26 to the engine 28. As in the front, the rear gear 46 transmits the torque from the engine 28 to one of the rear wheels 26 or to the rear axle 44.
  • each of the axles 40 and 44 is guided in rotation by two axle boxes 45, disposed immediately inside the wheels associated with the axle and extending only over a fraction of the transverse length of the axle.
  • each of the axles 40 and 44 comprises a rotating shaft rotatably connected to the wheels, and a housing ensuring the mechanical rigidity of the axle and the rotational guidance of the rotating shaft.
  • the housing extends substantially from one of the wheels associated with the axle to the other.
  • the motor 28 and the front 42 and rear 46 gearboxes are mounted on the bogie frame 22 and are therefore independent of the body 12. They are arranged between, on the one hand, a median longitudinal plane P1 of the two front wheels 24 and median of the two rear wheels 26, and, secondly, a longitudinal plane P2 passing through the front wheel 24 and the rear wheel 26 located on the same first transverse side of the bogie 16.
  • the plane P1 is, as shown in figure 2 , Equidistant from the two front wheels 24, and equidistant from the two rear wheels 26. It generally corresponds to the median longitudinal plane of the bogie 16.
  • the motor 28 and the gearboxes 42 and 46 are located as close as possible to the plane P2.
  • the positions of the front 42 and rear 46 gear units are symmetrical to one another with respect to a median transverse plane P3 of the front and rear wheels 24 and 26.
  • the plane P3 is equidistant from the respective axes of rotation of the front wheel 24 and the rear wheel 26 located on the first side of the bogie. It is also equidistant from the respective axes of rotation of the front wheel 24 and the rear wheel 26 located on the second side of the bogie opposite the first.
  • the motor 28, the front gear 42 and the rear gear 46 are aligned longitudinally, the motor 28 being placed longitudinally between the gearheads 42 and 46.
  • the motor 28 is equidistant from the two axles 40, 44.
  • the front and rear gearboxes 42 and 46 are different from each other and are chosen so as to drive the front and rear wheels in the same direction of rotation.
  • the front reduction gearbox 42 is rigidly fixed to the front axle box 45 located on the first side, or to the front axle housing 40, as the case may be.
  • the rear gear 46 is rigidly attached to the rear axle box 45 located on the first side, or to the rear axle housing 44, as the case may be.
  • the bogie 16 comprises four primary suspension members 32 and 33, able to suspend the bogie frame 22 on the axles 40 and 44.
  • Two primary suspension members 32 are located vertically above the front 42 and rear 46 reduction gears, and are interposed between the gearboxes 42 and 46 and the bogie frame 22 (FIG. figure 1 ).
  • Two other primary suspension members 33 are arranged between the plane PI and the wheels 24, 26 located on the second side of the bogie, as close as possible to the wheels.
  • the two members 33 are arranged between the front and rear axle boxes 45 and the bogie frame 22.
  • the two members 33 are arranged between the casings of the front axles 40 and rear 44 and the bogie frame 22.
  • the primary suspension members 32 and 33 are metal rubber sandwiches of the type described in FR-1 536 401 . They each comprise a plurality of layers of an elastic material such as rubber, and a plurality of metal plates interposed between the layers of elastic material and adherent to these layers. Each of the members 32 and 33 is shaped chevron.
  • the primary suspension members 33 each have a transverse width of about 100 mm.
  • the members 32 each have a transverse width of 300 mm and a height such that the bogie frame 22, at the right of the primary suspension member 32, is located at a height of 500 to 550 mm. above the P5 running surface of the bogie, for wheels with their new diameters of 590 mm.
  • the bogie typically comprises four secondary suspension members 34, each consisting of a helical spring, interposed between the bogie frame 22 and the body frame 14.
  • the four coil springs 34 of the secondary suspension are arranged symmetrically with respect to the planes P1 and P3. Two springs 34 are placed on the first side of the bogie, transversely outward of the bogie with respect to the wheels 24 and 26. The two other coil springs 34 are arranged on the second side of the bogie, transversely outwardly of the bogie relative to the bogie. to the wheels 24 and 26. The coil springs 34 are located longitudinally between the front wheels 24 and the rear wheels 26.
  • the front brake 36 is disposed on the first side of the bogie, transversely outwardly of the bogie with respect to the wheels 24 and 26 located on the first side.
  • the rear brake 38 is disposed on the second side of the bogie, transversely outwardly of the bogie relative to the wheels 24 and 26 located on the second side.
  • the body frame 14 has a first raised portion 48 to the right of the front and rear wheels 24, 26 located on the first transverse side of the bogie, and to the right of the motor 28 and the front and rear reducers 42 and 46. It comprises a second raised portion 50 to the right of the front and rear wheels 24 and 26 located on the second transverse side of the bogie, and a lower portion 52 between the first and second raised portions 48 and 50.
  • the second raised portion 50 covers the primary suspension members in chevrons 33.
  • the first portion 48 is relatively wider than the second perpendicular to the main direction, because it covers not only the wheels but also the gearboxes and the motor.
  • the lower part 52 forms a circulation corridor inside the box, this corridor being substantially parallel to the main direction.
  • the corridor is shifted transversely to the second raised portion 50 relative to the median plane P4 of the body 12 and extends parallel to the main direction.
  • the traffic corridor is located approximately 480mm above the bogie running surface. It extends practically, considered in a plane perpendicular to the main direction, from the gearboxes 42 and 46 or the motor 28 to the primary suspension members 33 located on the second side. It is therefore particularly wide, and has a width of about 750 mm in the non-pivoting version of the bogie.
  • Each row of seats of the box 12 comprises for example three seats 20, two seats 20 arranged side by side above the first raised portion 48, and a single seat 20 located above the second raised portion 50.
  • the seats 20 are practically not cantilevered within the corridor and therefore virtually do not encroach on the width of the corridor.
  • the bogie 16 can be mounted pivoting or non-pivoting on the body 12.
  • a pivoting bogie is connected to the body 12 by connecting means pivots about an axis substantially perpendicular to the running surface P5 of the tramway and can be part of the curve followed by the tramway.
  • the maximum amplitude of pivoting of the bogie relative to the body is 12 ° in viron.
  • a non-pivoting bogie is connected to the body by connecting means allowing a very limited pivoting around an axis perpendicular to the running surface, generally less than 2 °.
  • the longitudinal direction of the bogie is substantially parallel to the main direction of the body in the case of a fixed bogie.
  • the longitudinal direction of the bogie is parallel or at an angle less than 12 ° to the principal direction of the body, the inclination being variable according to the route of the track followed by the tram.
  • the bogie 16 comprises two motors, a front engine 54 coupled to the front gear 42, and a rear motor 56 coupled to the rear gear 46.
  • the positions of the front and rear gearheads 42 and 46 are substantially the same as in the embodiment of FIG. the figure 2 .
  • the front and rear engines 54 and 56 are arranged at symmetrical positions one of the other in relation to plane P3. They are placed between the reducers 42 and 46 and are aligned longitudinally with the reducers 42 and 46.
  • the bogie 16 comprises in total only two coil springs 34 instead of four.
  • the two springs 34 are arranged in the plane P3, symmetrically with respect to the plane P1, and are placed outside the bogie with respect to the wheels 24, 26.
  • the primary suspension members 61 on the side of the bogie are low members.
  • the two links 62 and 64 are placed in the same vertical plane, that is to say in the same plane perpendicular to the rolling plane P5 of the bogie, the connecting rod 62, located above the connecting rod 64, being called in the description that follows the upper link, and the connecting rod 64, the lower connecting rod.
  • the two connecting rods 62 and 64 are substantially parallel to each other and extend in a longitudinal direction corresponding substantially to the direction of the longitudinal members of the frame 22. They are thus perpendicular to the axle 40.
  • the connecting rods 62 and 64 have between their respective first and second connection points substantially the same longitudinal length.
  • the two connecting rods 62 and 64 are offset longitudinally relative to each other when the primary suspension member 61 is at rest and also when it is in charge. So, as shown in figure 5 , the upper link 62 is shifted to the right of the figure 5 , that is to say towards the frame 22 with respect to the lower link 64. In order to distribute the load on the two links 62 and 64, the second connection points 70 and 72 of the upper and lower links 62 and 64 are offset longitudinally on either side of the axle 40. Thus, in the embodiment of the figure 5 , the connecting point 70 of the upper link is offset relative to the transverse central axis of the axle 40 by a distance d towards the frame 22.
  • connection point 72 of the lower link 64 is offset relative to the central axis of the axle 40 of the same distance d in the longitudinal direction, opposite the frame 20.
  • the rods 62 and 64 extend substantially horizontally, that is to say substantially parallel to the rolling plane P5 of the bogie, and are entirely located at a lower vertical level at the top 76 of the axle box 45
  • the top 76 of the axle box is the point of this box located highest relative to the running surface of the bogie.
  • the elastic member 74 is a rubber-metal sandwich of the type described in the patent application FR-1 536 401 .
  • the elastic member 74 comprises a plurality of rubber layers 76 parallel to each other, a plurality of metal plates 78 interposed between the rubber layers 76, and end metal plates 80 disposed at the base and the top of the sandwich. .
  • the plates 78 and 80 are parallel to each other and are parallel to the rubber layers 76. Each rubber layer 76 is thus disposed between two metal plates 78 and / or 80 and adheres to these plates.
  • the compression axis of such an elastic member is perpendicular to the plates 78 and 80 and to the rubber layers 76.
  • Such a sandwich has a significant stiffness both in compression and in shear, that is to say respectively in response to a force exerted in a direction perpendicular to the plane of the plates 78, 80 and the layers 76, and parallel to the plane of these plates and layers.
  • the upper and lower connecting rods 62 and 64 each comprise a lateral extension respectively 82 and 84, defining bearing surfaces facing respectively 86 and 88, for the elastic member 74.
  • the elastic member 74 is caught between the surfaces 86 and 88. These surfaces 86 and 88 are parallel to each other, the end plates 80 being pressed onto the bearing surfaces and rigidly attached thereto.
  • the bearing surfaces 86 and 88 are oriented such that the axis of compression of the elastic member 74 forms an angle ⁇ of between 0 ° and 90 ° by relative to the axis passing through the first connection points 66 and 68 of the two connecting rods.
  • the angle ⁇ is between 20 ° and 50 °, and is typically 30 °.
  • the two connecting rods 62 and 64 are connected to the axle box 45 of the bogie by their respective second connecting points 70 and 72 by means of cylindrical elastic joints.
  • the two connecting rods are connected to the frame 22 of the bogie at their respective first connection points 66 and 68 also by cylindrical elastic joints.
  • the connecting rods 62 and 64 comprise at each of the connection points 66, 68, 70 and 72 a cross-axis end 90 engaged in a cylindrical orifice 92 arranged, as the case may be, either in the axle box 45 or in the chassis 22 of the bogie (see figure 6 ).
  • An elastic sleeve 94 for example made of natural or synthetic rubber, of cylindrical shape, is interposed between the end of axis 90 and the peripheral wall of the orifice 92.
  • the end of axis 90, the orifice 92 and the sleeve 94 are coaxial, of transverse axis.
  • the sleeve 94 adheres by an inner face to the end of axis 90 and by an outer face to the peripheral wall of the orifice 92.
  • the lower primary rear suspension member 61 is similar to the lower primary front suspension member 61.
  • Each member 61 is located at rest entirely below a level above the rolling plane P5 of the bogie between 200 mm and 400 mm. , preferably between 250 mm and 350 mm, and typically equal to 300 mm, for wheels having their diameters to nine of 590 mm.
  • the connecting rods 62 and 64 drive the axle box 45 in a vertical movement.
  • the assembly constituted by the frame 22, the two links 62 and 64 and the axle box 45, linked by the connection points 66, 68, 70, 72 constitutes a parallelogram.
  • the rods 62 and 64 each take a fraction of the effort F at their respective second connection points 70 and 72 , because these first connection points are placed on either side of the axle.
  • the distribution of the force between the two connecting rods is a function of the position of the elastic member 74 between the connection points 66 and 68.
  • the connecting rods 62 and 64 pivot upwards relative to the frame 22 around the first connection points 66 and 68, that is to say in a clockwise direction on the figure 5 .
  • the bearing surfaces 86 and 88 tend to get closer.
  • the pivoting of the rods 62 and 64 leads to exert on the elastic member 74 both a compressive force and a shear force.
  • the elastic member works in pure compression.
  • the elastic member works in pure shear.
  • the connecting rods 62 and 64 pivot with respect to the axle box 45 around the second connection points 70 and 72, which move vertically upwards like the figure 5 represents it in phantom.
  • the axle box 45 and its top 76 also undergo a vertical upward movement, but which is not represented on the figure 5 .
  • the connecting rods 62 and 64 rotate clockwise on the figure 5 relative to the axle box 45, and remain at a lower level than the top 76 of the axle box, which has moved upwards.
  • the pivoting of the connecting rods 62 and 64 causes torsion, for each connecting rod, of the elastic sleeves 60 of the first connection point and also of the second connection point.
  • the second raised portion 50 of the body floor 14 covers only the wheels 24 and 26 located on the second side.
  • the low primary suspension members 61 are placed under the circulation corridor 52, itself located relative to the running surface P5 of the bogie, at a level of between 280 mm and 480 mm, preferably between 330 mm and 430 mm. , and is typically 380 mm.
  • the circulation corridor substantially extends, considered in a plane perpendicular to the main direction, from the gearboxes 42 and 46 or the motor 28 to the wheels 24 and 26 situated on the second side. It has a width of 900mm in the case of a non-swiveling bogie and 650mm in the case of a swiveling bogie.
  • the bogie and railway vehicle described above have multiple advantages.
  • the kinematic transmission chain between the engine (s) and the wheels is shorter and mechanically simpler.
  • the front and rear reduction gears are arranged on the one hand between the median longitudinal plane of the wheels of the vehicle and the longitudinal plane passing through the wheels located on the first side of the bogie, it is possible to arrange in the chassis frame a low traffic corridor, particularly wide.
  • the corridor extends between, on the one hand, the gear units and, on the other hand, the primary suspension members located on the second side, and has a width of about 750mm, in the case of a non-pivoting bogie.
  • the corridor extends from the reducers to the wheels on the second side and has a width of about 900mm for the non-swiveling bogie and about 650mm for the swivel bogie .
  • the or each of the two drive motors of the bogie can be advantageously aligned longitudinally between the two reducers.
  • the or each motor and the gear units have transversely substantially the same size, so that there remains a large free space between the or each motor and the gearboxes on the one hand and the wheels on the second side of the bogie to let pass the circulation corridor of the cash register.
  • the brakes and the secondary suspension springs of the truck are placed towards the outside of the truck relative to the wheels, so as not to hinder the passage of the traffic corridor of the body.
  • the vehicle because of the arrangement of the engines and gearboxes on the bogie, may have a particularly wide low corridor between two raised floor sections, able to accommodate up to four rows of three seats without encroaching on the corridor for a box narrow (less than 2400 mm wide), ie twelve seats above the bogie.
  • a box narrow less than 2400 mm wide
  • two seats are arranged above the raised portion 48 and two others above the raised portion 50.
  • the traffic corridor is offset from the median plane of the body and parallel to the main direction of the body.
  • the architecture of the truck makes it possible to mount this bogie under the body either pivoting about a pivot substantially perpendicular to the rolling plane of the vehicle, or non-pivoting, that is to say with an angular displacement less than or equal to 2 ° compared to the cashier.
  • FR-A-2 604 676 can only be non-pivoting with respect to the body, since the engine is mounted under the body. Reducers that mechanically connect the engine to the axles could not tolerate 12 ° axle shifts in relation to the engine.
  • the primary suspensions are placed between the wheels, that is to say inside and not outside the bogie relative to the wheels, it is possible to lower the side walls 60 of the box substantially. up to the axis of the wheels, or lower, while giving them a curve. As shown in figure 1 , the walls 60 are not flat but on the contrary are slightly curved, and have a convexity turned towards the outside of the box. Furthermore, this provision of the primary suspensions facilitates access to the wheels and brake discs, for maintenance or replacement.
  • the bogie and vehicle described above may have multiple variants.
  • the secondary suspensions of the bogie can be of any type, and include for example helical springs or elastic devices herringbone.
  • the bogie both in the first and in the second embodiment, may comprise two or four secondary suspension members.
  • the axles linking in rotation the front wheels and the rear wheels can be of any type. They can be of the angled type, as described in EP-0 911 239 . They can also be of decoupled type, as described in the application bearing the deposit number FR 06 00834 .
  • the seats 20 located above the raised frame portion 50 may be oriented perpendicular to the seats 20 above the raised portion 48, i.e., so that the passengers are seated back to the side wall 60.
  • All primary suspension members may be of herringbone type. Conversely, all the primary suspension members may be low members located entirely under a level of about 300 mm with respect to the running surface of the bogie, for wheels with a diameter of 590 mm.
  • the railway vehicle can be a light vehicle of the tramway type, or a heavier vehicle, for example a train intended for short or long journeys.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Vehicle Body Suspensions (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Body Structure For Vehicles (AREA)

Description

L'invention concerne en général les véhicules ferroviaires, notamment les tramways.The invention generally relates to rail vehicles, including trams.

Plus précisément, l'invention concerne, selon un premier aspect, un bogie motorisé pour véhicule ferroviaire selon le préambule de la revendication 1.More precisely, the invention relates, according to a first aspect, to a motorized truck for a railway vehicle according to the preamble of claim 1.

Un tel bogie est connu du document FR-A-2 491 023 .Such a bogie is known from the document FR-A-2,491,023 .

Par ailleurs, FR-A-2 604 676 décrit un tramway comportant une caisse et au moins un bogie motorisé. Ce bogie comporte un moteur unique fixé sous la caisse, et décalé longitudinalement vers l'avant par rapport au châssis du bogie. Le réducteur avant est placé entre les deux roues avant, et est couplé directement au moteur. Le réducteur arrière est placé à l'extérieur des roues et est entraîné par l'intermédiaire du réducteur avant.Otherwise, FR-A-2 604 676 describes a streetcar with a body and at least one motorized bogie. This bogie comprises a single engine fixed under the body, and offset longitudinally forwardly relative to the frame of the bogie. The front gearbox is placed between the two front wheels, and is coupled directly to the engine. The rear gearbox is placed outside the wheels and is driven through the front gearbox.

Un tel bogie présente l'avantage de permettre l'aménagement d'un couloir central bas dans le châssis de la caisse permettant un accès sans marche à tout le tramway. En revanche, l'intégration du moteur dans la structure de la caisse au-delà de la zone bogie est contraignante, car elle interdit de prévoir des sièges ou une porte d'accès au droit du moteur. Par ailleurs, l'entraînement en série des deux réducteurs est complexe d'un point de vue mécanique.Such a bogie has the advantage of allowing the development of a low central corridor in the chassis of the box allowing a stepless access to the entire tram. However, the integration of the engine in the body structure beyond the bogie area is constraining because it prohibits to provide seats or an access door to the engine right. In addition, the series drive of the two reducers is complex from a mechanical point of view.

Dans ce contexte, l'invention vise à proposer un bogie motorisé permettant d'aménager dans le châssis de la caisse un couloir bas de grande largeur, mais qui soit mécaniquement moins complexe et plus facile d'intégration à la caisse du tramway.In this context, the invention aims to provide a motorized bogie for arranging in the frame of the box a low corridor of great width, but which is mechanically less complex and easier to integrate the body of the tram.

A cette fin, l'invention porte sur un bogie motorisé pour véhicule ferroviaire, selon la revendication 1.To this end, the invention relates to a motorized truck for a railway vehicle, according to claim 1.

Le bogie peut également présenter une ou plusieurs des caractéristiques ci-dessous, considérées individuellement ou selon toutes les combinaisons techniquement possibles :

  • les réducteurs avant et arrière sont disposés dans des positions symétriques l'une de l'autre par rapport à un plan transversal médian des roues avant et arrière ;
  • le bogie comprend un seul moteur d'entraînement, aligné longitudinalement entre les réducteurs avant et arrière ;
  • le bogie comprend deux moteurs d'entraînement alignés longitudinalement entre les réducteurs avant et arrière ;
  • le bogie comprend des organes de freinage des roues avant et arrière et des organes de suspension secondaire aptes à suspendre une caisse du véhicule ferroviaire au châssis de bogie, les organes de freinage et les organes de suspension secondaire étant placés vers l'extérieur du bogie par rapport aux roues ;
  • le bogie comprend des organes de suspension primaire interposés entre les moyens de transmission et le châssis de bogie, les organes de suspension primaire étant placés vers l'intérieur du bogie par rapport aux roues ; et
  • au moins certains organes de suspension primaire sont des organes bas chacun situé entièrement sous un niveau compris entre 200 mm et 400 mm par rapport au plan de roulement du bogie, pour des roues avant et arrière de diamètre 590 mm.
The bogie may also have one or more of the following characteristics, considered individually or in any technically feasible combination:
  • the front and rear reduction gears are arranged in positions symmetrical to one another with respect to a median transverse plane of the front and rear wheels;
  • the bogie comprises a single drive motor, aligned longitudinally between the front and rear gears;
  • the bogie comprises two drive motors longitudinally aligned between the front and rear gears;
  • the bogie comprises braking members of the front and rear wheels and secondary suspension members adapted to suspend a body of the railway vehicle to the bogie frame, the braking members and the secondary suspension members being placed towards the outside of the bogie by relative to the wheels;
  • the bogie comprises primary suspension members interposed between the transmission means and the bogie frame, the primary suspension members being placed towards the inside of the bogie with respect to the wheels; and
  • at least some primary suspension members are bottom members each located entirely under a level between 200 mm and 400 mm with respect to the running surface of the bogie, for front and rear wheels of diameter 590 mm.

Selon un second aspect, l'invention porte sur un véhicule ferroviaire comprenant :

  • une caisse de forme allongée suivant une direction principale et pourvue d'un châssis de caisse ;
  • au moins un bogie tel que décrit ci-dessus, lié à la caisse et disposé sous le châssis de caisse ;
le châssis de caisse comprenant une première partie surélevée au droit des roues avant et arrière situées du premier côté transversal du bogie et au droit des réducteurs avant et arrière, une seconde partie surélevée au moins au droit des roues avant et arrière situées d'un second côté transversal du bogie opposé au premier, et une partie surbaissée formant un couloir de circulation sensiblement parallèle à la direction principale entre les première et seconde parties surélevées.According to a second aspect, the invention relates to a railway vehicle comprising:
  • an elongated box in a main direction and provided with a body frame;
  • at least one bogie as described above, linked to the body and disposed under the body frame;
the body frame comprising a first portion elevated to the right of the front and rear wheels located on the first transverse side of the bogie and to the right of the front and rear reducers, a second raised part at least to the right of the wheels front and rear located on a second transverse side of the bogie opposite to the first, and a lowered portion forming a circulation corridor substantially parallel to the main direction between the first and second raised portions.

Le véhicule ferroviaire peut également présenter une ou plusieurs des caractéristiques ci-dessous :

  • le couloir de circulation est décalé transversalement vers la seconde partie surélevée par rapport à un plan médian de la caisse et parallèle à la direction principale ;
  • le bogie est lié à la caisse par des moyens de liaison pivot ;
  • le bogie est non pivotant par rapport à la caisse ;
  • le couloir de circulation s'étend depuis les réducteurs avant et arrière jusqu'aux roues avant et arrière situées du second côté du bogie ; et
  • le bogie comprend des organes de suspension primaire disposés immédiatement à l'intérieur du bogie par rapport aux roues avant et arrière situées du second côté du bogie, le couloir de circulation s'étendant depuis les réducteurs avant et arrière jusqu'auxdits organes de suspension primaire.
The railway vehicle may also have one or more of the following features:
  • the circulation corridor is shifted transversely towards the second raised portion relative to a median plane of the body and parallel to the main direction;
  • the bogie is connected to the body by pivot connection means;
  • the bogie is non-pivoting with respect to the body;
  • the traffic corridor extends from the front and rear gearboxes to the front and rear wheels on the second side of the bogie; and
  • the bogie comprises primary suspension members disposed immediately inside the bogie relative to the front and rear wheels located on the second side of the bogie, the traffic corridor extending from the front and rear reduction gears to said primary suspension members .

D'autres caractéristiques et avantages de l'invention ressortiront de la description qui en est donnée ci-dessous, à titre indicatif et nullement limitatif, en référence aux figures annexées, parmi lesquelles :

  • la figure 1 est une vue en coupe transversale d'un tramway comprenant un bogie conforme à un premier mode de réalisation de l'invention, le bogie étant coupé selon les flèches I-I de la figure 2 ;
  • la figure 2 est une représentation schématique, en vue de dessus, du bogie de la figure 1 ;
  • la figure 3 est une vue similaire à celle de la figure 3, pour un second mode de réalisation de l'invention ;
  • la figure 4 est une vue similaire à celle de la figure 1, pour le second mode de réalisation de l'invention ;
  • la figure 5 est une vue de côté d'une partie avant du bogie de la figure 3, montrant dans le détail la constitution d'un organe de suspension primaire bas de ce bogie, les deux bielles de l'organe de suspension étant représentées en traits pleins au repos et étant représentées en traits mixtes déplacées sous l'effet d'une sollicitation verticale de bas en haut appliquée à la roue, et
  • la figure 6 est une vue en coupe d'une articulation de la bielle supérieure de la figure 5, considérée suivant l'incidence des flèches VI.
Other features and advantages of the invention will emerge from the description given below, by way of indication and in no way limiting, with reference to the appended figures, among which:
  • the figure 1 is a cross-sectional view of a tramway comprising a bogie according to a first embodiment of the invention, the bogie being cut according to the arrows II of the figure 2 ;
  • the figure 2 is a schematic representation, in a top view, of the bogie of the figure 1 ;
  • the figure 3 is a view similar to that of the figure 3 for a second embodiment of the invention;
  • the figure 4 is a view similar to that of the figure 1 for the second embodiment of the invention;
  • the figure 5 is a side view of a front part of the bogie of the figure 3 , showing in detail the constitution of a lower primary suspension member of this bogie, the two connecting rods of the suspension member being shown in solid lines at rest and being represented in phantom lines displaced under the effect of a solicitation vertical from bottom to top applied to the wheel, and
  • the figure 6 is a sectional view of a joint of the upper connecting rod of the figure 5 , considered according to the incidence of arrows VI.

Le tramway 10 représenté sur la figure 1 comprend par exemple une caisse 12 de forme allongée suivant une direction principale et pourvue d'un châssis de caisse 14, et deux bogies 16, chacun lié à la caisse 12 et disposé sous le châssis 14. La caisse 12 comporte un espace intérieur d'accueil des passagers 18, délimité vers le bas par le châssis 14, et des sièges 20 fixés au châssis 14. Les sièges 20 sont typiquement agencés en plusieurs rangées s'étendant perpendiculairement à la direction principale. Les sièges sont orientés de telle sorte que les passagers assis sur les sièges regardent selon la direction principale.The tramway 10 represented on the figure 1 comprises for example a box 12 of elongate shape in a main direction and provided with a body frame 14, and two bogies 16, each connected to the body 12 and disposed under the frame 14. The body 12 has an interior space of passenger reception 18, bounded down by the frame 14, and seats 20 fixed to the frame 14. The seats 20 are typically arranged in several rows extending perpendicular to the main direction. The seats are oriented so that the passengers sitting on the seats look in the main direction.

Les bogies 16 sont aptes à supporter et à guider la caisse 12 quand le tramway se déplace le long d'une voie.The bogies 16 are able to support and guide the body 12 when the tramway moves along a path.

Dans un premier mode de réalisation de l'invention, chaque bogie comporte, comme le montre schématiquement la figure 2 :

  • un châssis de bogie 22 ;
  • deux roues avant 24 et deux roues arrière 26 ;
  • un moteur d'entraînement 28 ;
  • des moyens de transmission 30 aptes à transmettre le couple généré par le moteur 28 aux roues avant 24 et aux roues arrière 26 ;
  • des organes de suspension primaire 32 et 33, et des organes de suspension secondaire 34 ;
  • des freins avant et arrière 36 et 38.
In a first embodiment of the invention, each bogie comprises, as schematically shown in FIG. figure 2 :
  • a bogie frame 22;
  • two front wheels 24 and two rear wheels 26;
  • a drive motor 28;
  • transmission means 30 capable of transmitting the torque generated by the motor 28 to the front wheels 24 and the rear wheels 26;
  • primary suspension members 32 and 33, and secondary suspension members 34;
  • front and rear brakes 36 and 38.

Le châssis 22 comprend typiquement deux longerons longitudinaux (non représentés), et deux traverses transversales (non représentées) rigidement fixées les unes aux autres. Seul le contour extérieur du châssis 22 est représenté sur la figure 2. Ce contour est matérialisé par des traits interrompus.The frame 22 typically comprises two longitudinal longitudinal members (not shown), and two transverse crosspieces (not shown) rigidly fixed to each other. Only the outer contour of the frame 22 is represented on the figure 2 . This contour is materialized by broken lines.

Les roues avant 24 sont coaxiales, espacées transversalement l'une de l'autre, et sont liées au châssis 22. De même, les roues arrière 26 sont coaxiales, espacées transversalement l'une de l'autre, et liées au châssis 22.The front wheels 24 are coaxial, spaced transversely from one another, and are connected to the frame 22. Likewise, the rear wheels 26 are coaxial, spaced transversely from one another, and connected to the frame 22.

Les roues avant 24 sont espacées longitudinalement des roues arrière 26.The front wheels 24 are spaced longitudinally from the rear wheels 26.

Les moyens de transmission 30 comprennent par exemple un essieu avant 40 liant en rotation les roues avant 24 entre elles et un réducteur avant 42 d'accouplement des roues avant 24 au moteur 28. Le réducteur avant 42 transmet le couple du moteur 28 à l'une des roues avant 24, le couple étant transmis depuis ladite roue à l'autre roue avant 24 par l'essieu avant 40. En variante, le réducteur avant 42 transmet le couple du moteur 28 à l'essieu 40, celui-ci entraînant les deux roues avant 24.The transmission means 30 comprise, for example, a front axle 40 linking the front wheels 24 in rotation with each other and a front gearbox 42 for coupling the front wheels 24 to the motor 28. The front gearbox 42 transmits the torque of the motor 28 to one of the front wheels 24, the torque being transmitted from said wheel to the other front wheel 24 by the front axle 40. In a variant, the front reduction gearbox 42 transmits the torque of the motor 28 to the axle 40, the latter driving the two front wheels 24.

Les moyens de transmission 30 comprennent également un essieu arrière 44 liant en rotation les deux roues arrière 26 entre elles et un réducteur 46 arrière d'accouplement des roues arrière 26 au moteur 28. Comme à l'avant, le réducteur arrière 46 transmet le couple du moteur 28 à une des roues arrière 26 ou à l'essieu arrière 44.The transmission means 30 also comprise a rear axle 44 linking the two rear wheels 26 in rotation with each other and a rear reduction gear 46 for coupling the rear wheels 26 to the engine 28. As in the front, the rear gear 46 transmits the torque from the engine 28 to one of the rear wheels 26 or to the rear axle 44.

Chacun des essieux 40 et 44 est guidé en rotation par deux boîtes d'essieu 45, disposées immédiatement à l'intérieur des roues associées à l'essieu et s'étendant seulement sur une fraction de la longueur transversale de l'essieu. En variante, chacun des essieux 40 et 44 comprend un arbre tournant lié en rotation aux roues, et un carter assurant la rigidité mécanique de l'essieu et le guidage en rotation de l'arbre tournant. Le carter s'étend pratiquement d'une des roues associées à l'essieu jusqu'à l'autre.Each of the axles 40 and 44 is guided in rotation by two axle boxes 45, disposed immediately inside the wheels associated with the axle and extending only over a fraction of the transverse length of the axle. Alternatively, each of the axles 40 and 44 comprises a rotating shaft rotatably connected to the wheels, and a housing ensuring the mechanical rigidity of the axle and the rotational guidance of the rotating shaft. The housing extends substantially from one of the wheels associated with the axle to the other.

Le moteur 28 et les réducteurs avant 42 et arrière 46 sont montés sur le châssis de bogie 22 et sont donc indépendants de la caisse 12. Ils sont disposés entre, d'une part, un plan P1 longitudinal médian des deux roues avant 24 et médian des deux roues arrière 26, et, d'autre part, un plan P2 longitudinal passant par la roue avant 24 et la roue arrière 26 situées d'un même premier côté transversal du bogie 16.The motor 28 and the front 42 and rear 46 gearboxes are mounted on the bogie frame 22 and are therefore independent of the body 12. They are arranged between, on the one hand, a median longitudinal plane P1 of the two front wheels 24 and median of the two rear wheels 26, and, secondly, a longitudinal plane P2 passing through the front wheel 24 and the rear wheel 26 located on the same first transverse side of the bogie 16.

Le plan P1 est, comme le montre la figure 2, équidistant des deux roues avant 24, et équidistant des deux roues arrière 26. Il correspond généralement au plan longitudinal médian du bogie 16. De préférence, le moteur 28 et les réducteurs 42 et 46 sont situés le plus près possible du plan P2.The plane P1 is, as shown in figure 2 , Equidistant from the two front wheels 24, and equidistant from the two rear wheels 26. It generally corresponds to the median longitudinal plane of the bogie 16. Preferably, the motor 28 and the gearboxes 42 and 46 are located as close as possible to the plane P2.

Par ailleurs, les positions des réducteurs avant 42 et arrière 46 sont symétriques l'une de l'autre par rapport à un plan transversal P3 médian des roues avant et arrière 24 et 26. Comme le montre la figure 2, le plan P3 est équidistant des axes de rotation respectifs de la roue avant 24 et de la roue arrière 26 situées du premier côté du bogie. Il est également équidistant des axes de rotation respectifs de la roue avant 24 et de la roue arrière 26 situées du second côté du bogie opposé au premier.Furthermore, the positions of the front 42 and rear 46 gear units are symmetrical to one another with respect to a median transverse plane P3 of the front and rear wheels 24 and 26. As shown in FIG. figure 2 , the plane P3 is equidistant from the respective axes of rotation of the front wheel 24 and the rear wheel 26 located on the first side of the bogie. It is also equidistant from the respective axes of rotation of the front wheel 24 and the rear wheel 26 located on the second side of the bogie opposite the first.

Le moteur 28, le réducteur avant 42 et le réducteur arrière 46 sont alignés longitudinalement, le moteur 28 étant placé longitudinalement entre les réducteurs 42 et 46. Le moteur 28 est équidistant des deux essieux 40, 44.The motor 28, the front gear 42 and the rear gear 46 are aligned longitudinally, the motor 28 being placed longitudinally between the gearheads 42 and 46. The motor 28 is equidistant from the two axles 40, 44.

Les réducteurs avant et arrière 42 et 46 sont différents l'un de l'autre et sont choisis de manière à entraîner les roues avant et arrière dans un même sens de rotation.The front and rear gearboxes 42 and 46 are different from each other and are chosen so as to drive the front and rear wheels in the same direction of rotation.

Le réducteur avant 42 est rigidement fixé à la boîte d'essieu avant 45 située du premier côté, ou au carter de l'essieu avant 40, selon les cas. De même, le réducteur arrière 46 est rigidement fixé à la boîte d'essieu arrière 45 située du premier côté, ou au carter de l'essieu arrière 44, selon les cas.The front reduction gearbox 42 is rigidly fixed to the front axle box 45 located on the first side, or to the front axle housing 40, as the case may be. Similarly, the rear gear 46 is rigidly attached to the rear axle box 45 located on the first side, or to the rear axle housing 44, as the case may be.

Le bogie 16 comporte quatre organes de suspension primaire 32 et 33, aptes à suspendre le châssis de bogie 22 sur les essieux 40 et 44.The bogie 16 comprises four primary suspension members 32 and 33, able to suspend the bogie frame 22 on the axles 40 and 44.

Deux organes de suspension primaire 32 sont situés verticalement au dessus des réducteurs avant 42 et arrière 46, et sont interposés entre les réducteurs 42 et 46 et le châssis de bogie 22 (figure 1).Two primary suspension members 32 are located vertically above the front 42 and rear 46 reduction gears, and are interposed between the gearboxes 42 and 46 and the bogie frame 22 (FIG. figure 1 ).

Deux autres organes de suspension primaire 33 sont disposés entre le plan PI et les roues 24, 26 situées du second côté du bogie, le plus près possible des roues.Two other primary suspension members 33 are arranged between the plane PI and the wheels 24, 26 located on the second side of the bogie, as close as possible to the wheels.

Dans le cas d'essieux montés dans des boîtes d'essieu 45, les deux organes 33 sont disposés entre les boîtes d'essieu 45 avant et arrière et le châssis de bogie 22. Dans le cas d'essieux avec un arbre et un carter, les deux organes 33 sont disposés entre les carters des essieux avant 40 et arrière 44 et le châssis de bogie 22.In the case of axles mounted in axle boxes 45, the two members 33 are arranged between the front and rear axle boxes 45 and the bogie frame 22. In the case of axles with a shaft and a housing , the two members 33 are arranged between the casings of the front axles 40 and rear 44 and the bogie frame 22.

Les organes de suspension primaire 32 et 33 sont des sandwichs caoutchouc métal du type décrit dans FR-1 536 401 . Ils comprennent chacun une pluralité de couches d'un matériau élastique tel que du caoutchouc, et une pluralité de plaques métalliques interposées entre les couches de matériau élastique et adhérentes à ces couches. Chacun des organes 32 et 33 est conformé en chevron.The primary suspension members 32 and 33 are metal rubber sandwiches of the type described in FR-1 536 401 . They each comprise a plurality of layers of an elastic material such as rubber, and a plurality of metal plates interposed between the layers of elastic material and adherent to these layers. Each of the members 32 and 33 is shaped chevron.

Les organes de suspension primaire 33 présentent chacun une largeur transversale d'environ 100 mm. Les organes 32 présentent chacun une largeur transversale de 300 mm et une hauteur telle que le châssis de bogie 22, au droit de l'organe de suspension primaire 32, est situé à une hauteur de 500 à 550 mm au-dessus du plan de roulement P5 du bogie, pour des roues ayant leurs diamètres à neuf de 590 mm.The primary suspension members 33 each have a transverse width of about 100 mm. The members 32 each have a transverse width of 300 mm and a height such that the bogie frame 22, at the right of the primary suspension member 32, is located at a height of 500 to 550 mm. above the P5 running surface of the bogie, for wheels with their new diameters of 590 mm.

Le bogie comporte typiquement quatre organes de suspension secondaires 34, constitués chacun d'un ressort hélicoïdal, interposés entre le châssis de bogie 22 et le châssis de caisse 14.The bogie typically comprises four secondary suspension members 34, each consisting of a helical spring, interposed between the bogie frame 22 and the body frame 14.

Les quatre ressorts hélicoïdaux 34 de suspension secondaire sont disposés de manière symétrique par rapport aux plans P1 et P3. Deux ressorts 34 sont placés du premier côté du bogie, transversalement vers l'extérieur du bogie par rapport aux roues 24 et 26. Les deux autres ressorts hélicoïdaux 34 sont disposés du second côté du bogie, transversalement vers l'extérieur de ce bogie par rapport aux roues 24 et 26. Les ressorts hélicoïdaux 34 sont situés longitudinalement entre les roues avant 24 et les roues arrière 26.The four coil springs 34 of the secondary suspension are arranged symmetrically with respect to the planes P1 and P3. Two springs 34 are placed on the first side of the bogie, transversely outward of the bogie with respect to the wheels 24 and 26. The two other coil springs 34 are arranged on the second side of the bogie, transversely outwardly of the bogie relative to the bogie. to the wheels 24 and 26. The coil springs 34 are located longitudinally between the front wheels 24 and the rear wheels 26.

Le frein avant 36 est disposé du premier côté du bogie, transversalement vers l'extérieur du bogie par rapport aux roues 24 et 26 situées du premier côté. Le frein arrière 38 est disposé du second côté du bogie, transversalement vers l'extérieur de ce bogie par rapport aux roues 24 et 26 situées du second côté.The front brake 36 is disposed on the first side of the bogie, transversely outwardly of the bogie with respect to the wheels 24 and 26 located on the first side. The rear brake 38 is disposed on the second side of the bogie, transversely outwardly of the bogie relative to the wheels 24 and 26 located on the second side.

Comme le montre la figure 1, le châssis de caisse 14 présente une première partie surélevée 48 au droit des roues avant et arrière 24, 26 situées du premier côté transversal du bogie, et au droit du moteur 28 et des réducteurs avant et arrière 42 et 46. Il comporte une seconde partie surélevée 50 au droit des roues avant et arrière 24 et 26 situées du second côté transversal du bogie, et une partie basse 52 entre les première et seconde parties surélevées 48 et 50.As shown in figure 1 , the body frame 14 has a first raised portion 48 to the right of the front and rear wheels 24, 26 located on the first transverse side of the bogie, and to the right of the motor 28 and the front and rear reducers 42 and 46. It comprises a second raised portion 50 to the right of the front and rear wheels 24 and 26 located on the second transverse side of the bogie, and a lower portion 52 between the first and second raised portions 48 and 50.

Dans le premier mode de réalisation de l'invention, la seconde partie surélevée 50 couvre les organes de suspension primaire en chevrons 33.In the first embodiment of the invention, the second raised portion 50 covers the primary suspension members in chevrons 33.

La première partie 48 est relativement plus large que la seconde perpendiculairement à la direction principale, du fait qu'elle couvre non seulement les roues mais également les réducteurs et le moteur. La partie basse 52 forme un couloir de circulation à l'intérieur de la caisse, ce couloir étant sensiblement parallèle à la direction principale. Le couloir est décalé transversalement vers la seconde partie surélevée 50 par rapport au plan P4 médian de la caisse 12 et s'étend parallèlement à la direction principale.The first portion 48 is relatively wider than the second perpendicular to the main direction, because it covers not only the wheels but also the gearboxes and the motor. The lower part 52 forms a circulation corridor inside the box, this corridor being substantially parallel to the main direction. The corridor is shifted transversely to the second raised portion 50 relative to the median plane P4 of the body 12 and extends parallel to the main direction.

Le couloir de circulation est situé à un niveau de 480mm environ par rapport au plan de roulement du bogie. Il s'étend pratiquement, considéré dans un plan perpendiculaire à la direction principale, depuis les réducteurs 42 et 46 ou le moteur 28 jusqu'aux organes de suspension primaire 33 situés du second côté. Il est donc particulièrement large, et présente une largeur de 750 mm environ dans la version non pivotante du bogie.The traffic corridor is located approximately 480mm above the bogie running surface. It extends practically, considered in a plane perpendicular to the main direction, from the gearboxes 42 and 46 or the motor 28 to the primary suspension members 33 located on the second side. It is therefore particularly wide, and has a width of about 750 mm in the non-pivoting version of the bogie.

Chaque rangée de sièges de la caisse 12 comporte par exemple trois sièges 20, deux sièges 20 disposés côte à côte au-dessus de la première partie surélevée 48, et un unique siège 20 situé au-dessus de la seconde partie surélevée 50. Les sièges 20 ne sont pratiquement pas en porte-à-faux à l'intérieur du couloir et n'empiètent donc pratiquement pas sur la largeur du couloir.Each row of seats of the box 12 comprises for example three seats 20, two seats 20 arranged side by side above the first raised portion 48, and a single seat 20 located above the second raised portion 50. The seats 20 are practically not cantilevered within the corridor and therefore virtually do not encroach on the width of the corridor.

Le bogie 16 peut être monté pivotant ou non pivotant sur la caisse 12. Un bogie pivotant est lié à la caisse 12 par des moyens de liaison pivots autour d'un axe sensiblement perpendiculaire au plan de roulement P5 du tramway et peut s'inscrire dans la courbe suivie par le tramway. L'amplitude maximum de pivotement du bogie par rapport à la caisse est de 12° en viron.The bogie 16 can be mounted pivoting or non-pivoting on the body 12. A pivoting bogie is connected to the body 12 by connecting means pivots about an axis substantially perpendicular to the running surface P5 of the tramway and can be part of the curve followed by the tramway. The maximum amplitude of pivoting of the bogie relative to the body is 12 ° in viron.

Un bogie non pivotant est lié à la caisse par des moyens de liaison autorisant un pivotement très limité autour d'un axe perpendiculaire au plan de roulement, généralement inférieur à 2°.A non-pivoting bogie is connected to the body by connecting means allowing a very limited pivoting around an axis perpendicular to the running surface, generally less than 2 °.

On notera que la direction longitudinale du bogie est sensiblement parallèle à la direction principale de la caisse dans le cas d'un bogie fixe. Dans le cas d'un bogie pivotant, la direction longitudinale du bogie est parallèle ou forme un angle inférieur à 12° par rapport à la direction principa le de la caisse, l'inclinaison étant variable en fonction du tracé de la voie suivie par le tramway.It should be noted that the longitudinal direction of the bogie is substantially parallel to the main direction of the body in the case of a fixed bogie. In the case of a pivoting bogie, the longitudinal direction of the bogie is parallel or at an angle less than 12 ° to the principal direction of the body, the inclination being variable according to the route of the track followed by the tram.

Un second mode de réalisation de l'invention va maintenant être décrit, en référence aux figures 3 à 6. Les éléments identiques ou ayant la même fonction dans les premier et second modes de réalisation seront désignés par les mêmes références. Seuls les points par lesquels le second mode de réalisation diffère du premier seront détaillés.A second embodiment of the invention will now be described with reference to Figures 3 to 6 . The elements that are identical or have the same function in the first and second embodiments will be designated by the same references. Only the points by which the second embodiment differs from the first will be detailed.

Comme le montre la figure 3, le bogie 16 comprend deux moteurs, un moteur avant 54 couplé au réducteur avant 42, et un moteur arrière 56 couplé au réducteur arrière 46. Les positions des réducteurs avant et arrière 42 et 46 sont sensiblement les mêmes que dans le mode de réalisation de la figure 2. Les moteurs avant et arrière 54 et 56 sont disposés à des positions symétriques l'une de l'autre par rapport au plan P3. Ils sont placés entre les réducteurs 42 et 46 et sont alignés longitudinalement avec les réducteurs 42 et 46.As shown in figure 3 , the bogie 16 comprises two motors, a front engine 54 coupled to the front gear 42, and a rear motor 56 coupled to the rear gear 46. The positions of the front and rear gearheads 42 and 46 are substantially the same as in the embodiment of FIG. the figure 2 . The front and rear engines 54 and 56 are arranged at symmetrical positions one of the other in relation to plane P3. They are placed between the reducers 42 and 46 and are aligned longitudinally with the reducers 42 and 46.

Le bogie 16 ne comprend au total que deux ressorts hélicoïdaux 34 au lieu de quatre. Les deux ressorts 34 sont disposés dans le plan P3, de manière symétrique l'un de l'autre par rapport au plan P1, et sont placés à l'extérieur du bogie par rapport aux roues 24, 26.The bogie 16 comprises in total only two coil springs 34 instead of four. The two springs 34 are arranged in the plane P3, symmetrically with respect to the plane P1, and are placed outside the bogie with respect to the wheels 24, 26.

Comme visible sur la figure 3, les organes de suspension primaire 61 situés du côté du bogie sont des organes bas.As visible on the figure 3 , the primary suspension members 61 on the side of the bogie are low members.

L'organe de suspension primaire avant 61 comprend :

  • deux bielles 62 et 64, liées par des premiers points de liaison respectifs 66 et 68 au châssis 22, et par des second points de liaison respectifs 70 et 72 à la boîte d'essieu 45 ;
  • un organe élastique 74 interposé entre les deux bielles 62 et 64 en vue de définir au moins la raideur verticale du de l'organe de suspension primaire 61.
The primary front suspension member 61 comprises:
  • two connecting rods 62 and 64, connected by first respective connection points 66 and 68 to the frame 22, and by respective second connection points 70 and 72 to the axle box 45;
  • an elastic member 74 interposed between the two connecting rods 62 and 64 in order to define at least the vertical stiffness of the primary suspension member 61.

Les deux bielles 62 et 64 sont placées dans un même plan vertical, c'est-à-dire dans un même plan perpendiculaire au plan de roulement P5 du bogie, la bielle 62, située au-dessus de la bielle 64, étant appelée dans la description qui va suivre la bielle supérieure, et la bielle 64, la bielle inférieure.The two links 62 and 64 are placed in the same vertical plane, that is to say in the same plane perpendicular to the rolling plane P5 of the bogie, the connecting rod 62, located above the connecting rod 64, being called in the description that follows the upper link, and the connecting rod 64, the lower connecting rod.

Au repos, les deux bielles 62 et 64 sont sensiblement parallèles l'une à l'autre et s'étendent suivant une direction longitudinale correspondant sensiblement à la direction des longerons du châssis 22. Elles sont ainsi perpendiculaires à l'essieu 40. Les bielles 62 et 64 présentent entre leurs premiers et seconds points de liaison respectifs sensiblement la même longueur longitudinale.At rest, the two connecting rods 62 and 64 are substantially parallel to each other and extend in a longitudinal direction corresponding substantially to the direction of the longitudinal members of the frame 22. They are thus perpendicular to the axle 40. The connecting rods 62 and 64 have between their respective first and second connection points substantially the same longitudinal length.

Comme le montre la figure 5, les deux bielles 62 et 64 sont décalées longitudinalement l'une par rapport à l'autre quand l'organe de suspension primaire 61 est au repos et également quand il est en charge. Ainsi, comme le montre la figure 5, la bielle supérieure 62 est décalée vers la droite de la figure 5, c'est-à-dire vers le châssis 22 par rapport à la bielle inférieure 64. De manière à répartir la charge sur les deux bielles 62 et 64, les seconds points de liaison 70 et 72 des bielles supérieure et inférieure 62 et 64 sont décalés longitudinalement de part et d'autre de l'essieu 40. Ainsi, dans l'exemple de réalisation de la figure 5, le point de liaison 70 de la bielle supérieure est décalé par rapport à l'axe central transversal de l'essieu 40 d'une distance d vers le châssis 22. Symétriquement, le point de liaison 72 de la bielle inférieure 64 est décalé par rapport à l'axe central de l'essieu 40 de la même distance d suivant la direction longitudinale, à l'opposé du châssis 20. Avec cette disposition, il y a égale répartition de la charge entre les deux bielles 62 et 64 quand l'organe élastique 74 est centré entre les points de liaison 66 et 68, c'est-à-dire quand le centre de l'organe 74 est placé à équidistance des points 66 et 68 sur la droite passant par les deux points 66 et 68.As shown in figure 5 , the two connecting rods 62 and 64 are offset longitudinally relative to each other when the primary suspension member 61 is at rest and also when it is in charge. So, as shown in figure 5 , the upper link 62 is shifted to the right of the figure 5 , that is to say towards the frame 22 with respect to the lower link 64. In order to distribute the load on the two links 62 and 64, the second connection points 70 and 72 of the upper and lower links 62 and 64 are offset longitudinally on either side of the axle 40. Thus, in the embodiment of the figure 5 , the connecting point 70 of the upper link is offset relative to the transverse central axis of the axle 40 by a distance d towards the frame 22. Symmetrically, the connection point 72 of the lower link 64 is offset relative to the central axis of the axle 40 of the same distance d in the longitudinal direction, opposite the frame 20. With this arrangement, there is equal distribution of the load between the two links 62 and 64 when the elastic member 74 is centered between the connection points 66 and 68, that is to say when the center of the member 74 is placed equidistant from the points 66 and 68 on the right passing through two points 66 and 68.

Au repos, les bielles 62 et 64 s'étendent sensiblement horizontalement, c'est-à-dire sensiblement parallèlement au plan de roulement P5 du bogie, et sont entièrement situées à un niveau vertical inférieur au sommet 76 de la boîte d'essieu 45. Le sommet 76 de la boîte d'essieu est le point de cette boîte situé le plus haut par rapport au plan de roulement du bogie.At rest, the rods 62 and 64 extend substantially horizontally, that is to say substantially parallel to the rolling plane P5 of the bogie, and are entirely located at a lower vertical level at the top 76 of the axle box 45 The top 76 of the axle box is the point of this box located highest relative to the running surface of the bogie.

L'organe élastique 74 est un sandwich caoutchouc-métal du type décrit dans la demande de brevet FR-1 536 401 . L'organe élastique 74 comprend une pluralité de couches de caoutchouc 76 parallèles les unes aux autres, une pluralité de plaques métalliques 78 interposées entre les couches de caoutchouc 76, et des plaques métalliques d'extrémité 80 disposées à la base et au sommet du sandwich. Les plaques 78 et 80 sont parallèles entre elles et sont parallèles aux couches de caoutchouc 76. Chaque couche de caoutchouc 76 est ainsi disposée entre deux plaques métalliques 78 et/ou 80 et adhère à ces plaques.The elastic member 74 is a rubber-metal sandwich of the type described in the patent application FR-1 536 401 . The elastic member 74 comprises a plurality of rubber layers 76 parallel to each other, a plurality of metal plates 78 interposed between the rubber layers 76, and end metal plates 80 disposed at the base and the top of the sandwich. . The plates 78 and 80 are parallel to each other and are parallel to the rubber layers 76. Each rubber layer 76 is thus disposed between two metal plates 78 and / or 80 and adheres to these plates.

L'axe de compression d'un tel organe élastique est perpendiculaire aux plaques 78 et 80 et aux couches de caoutchouc 76.The compression axis of such an elastic member is perpendicular to the plates 78 and 80 and to the rubber layers 76.

Un tel sandwich présente une raideur importante à la fois en compression et en cisaillement, c'est-à-dire respectivement en réponse à un effort exercé suivant une direction perpendiculaire au plan des plaques 78, 80 et des couches 76, et parallèlement au plan de ces plaques et de ces couches.Such a sandwich has a significant stiffness both in compression and in shear, that is to say respectively in response to a force exerted in a direction perpendicular to the plane of the plates 78, 80 and the layers 76, and parallel to the plane of these plates and layers.

Les bielles supérieure et inférieure 62 et 64 comprennent chacune un prolongement latéral respectivement 82 et 84, définissant des surfaces d'appui en vis-à-vis respectivement 86 et 88, pour l'organe élastique 74. L'organe élastique 74 est pris entre les surfaces 86 et 88. Ces surfaces 86 et 88 sont parallèles l'une à l'autre, les plaques d'extrémité 80 étant plaquées sur les surfaces d'appui et rigidement fixées à celles-ci.The upper and lower connecting rods 62 and 64 each comprise a lateral extension respectively 82 and 84, defining bearing surfaces facing respectively 86 and 88, for the elastic member 74. The elastic member 74 is caught between the surfaces 86 and 88. These surfaces 86 and 88 are parallel to each other, the end plates 80 being pressed onto the bearing surfaces and rigidly attached thereto.

Les surfaces d'appui 86 et 88 sont orientées de telle sorte que l'axe de compression de l'organe élastique 74 forme un angle β compris entre 0° et 90° par rapport à l'axe passant par les premiers points de liaison 66 et 68 des deux bielles. De préférence, l'angle β est compris entre 20° et 50°, et vaut typiquement 30°.The bearing surfaces 86 and 88 are oriented such that the axis of compression of the elastic member 74 forms an angle β of between 0 ° and 90 ° by relative to the axis passing through the first connection points 66 and 68 of the two connecting rods. Preferably, the angle β is between 20 ° and 50 °, and is typically 30 °.

Les deux bielles 62 et 64 sont liées à la boîte d'essieu 45 du bogie par leurs seconds points de liaison respectifs 70 et 72 par l'intermédiaire d'articulations élastiques cylindriques. Les deux bielles sont liées au châssis 22 du bogie à leurs premiers points de liaison respectifs 66 et 68 également par des articulations élastiques cylindriques.The two connecting rods 62 and 64 are connected to the axle box 45 of the bogie by their respective second connecting points 70 and 72 by means of cylindrical elastic joints. The two connecting rods are connected to the frame 22 of the bogie at their respective first connection points 66 and 68 also by cylindrical elastic joints.

Les bielles 62 et 64 comportent à chacun des points de liaison 66, 68, 70 et 72 un bout d'axe transversal 90 engagé dans un orifice cylindrique 92 ménagé, selon les cas, soit dans la boîte d'essieu 45, soit dans le châssis 22 du bogie (voir figure 6). Un manchon élastique 94, par exemple en caoutchouc naturel ou synthétique, de forme cylindrique, est interposé entre le bout d'axe 90 et la paroi périphérique de l'orifice 92. Le bout d'axe 90, l'orifice 92 et le manchon 94 sont coaxiaux, d'axe transversal. Le manchon 94 adhère par une face interne au bout d'axe 90 et par une face externe à la paroi périphérique de l'orifice 92.The connecting rods 62 and 64 comprise at each of the connection points 66, 68, 70 and 72 a cross-axis end 90 engaged in a cylindrical orifice 92 arranged, as the case may be, either in the axle box 45 or in the chassis 22 of the bogie (see figure 6 ). An elastic sleeve 94, for example made of natural or synthetic rubber, of cylindrical shape, is interposed between the end of axis 90 and the peripheral wall of the orifice 92. The end of axis 90, the orifice 92 and the sleeve 94 are coaxial, of transverse axis. The sleeve 94 adheres by an inner face to the end of axis 90 and by an outer face to the peripheral wall of the orifice 92.

L'organe bas de suspension primaire arrière 61 est similaire à l'organe bas de suspension primaire avant 61. Chaque organe 61 est situé au repos entièrement sous un niveau au-dessus du plan de roulement P5 du bogie comprise entre 200 mm et 400 mm, de préférence compris entre 250 mm et 350 mm, et valant typiquement 300 mm, pour des roues ayant leurs diamètres à neuf de 590 mm .The lower primary rear suspension member 61 is similar to the lower primary front suspension member 61. Each member 61 is located at rest entirely below a level above the rolling plane P5 of the bogie between 200 mm and 400 mm. , preferably between 250 mm and 350 mm, and typically equal to 300 mm, for wheels having their diameters to nine of 590 mm.

Le fonctionnement de l'organe de suspension ci-dessus va maintenant être brièvement décrit.The operation of the above suspension member will now be briefly described.

Sous l'effet d'une charge ou d'un défaut de voie qui fait remonter la roue 24, les bielles 62 et 64 entraînent la boîte d'essieu 45 dans un mouvement vertical. L'ensemble constitué par le châssis 22, les deux bielles 62 et 64 et la boîte d'essieu 45, liés par les points de liaison 66, 68, 70, 72 constitue un parallélogramme.Under the effect of a load or a track fault which causes the wheel 24 to rise, the connecting rods 62 and 64 drive the axle box 45 in a vertical movement. The assembly constituted by the frame 22, the two links 62 and 64 and the axle box 45, linked by the connection points 66, 68, 70, 72 constitutes a parallelogram.

Quand la roue 24 subit un effort vertical F de bas en haut, dans le cas d'un défaut de voie par exemple, les bielles 62 et 64 reprennent chacune une fraction de l'effort F à leurs seconds points de liaison respectifs 70 et 72, du fait que ces premiers points de liaison sont placés de part et d'autre de l'essieu. La répartition de l'effort entre les deux bielles est fonction de la position de l'organe élastique 74 entre les points de liaison 66 et 68.When the wheel 24 undergoes a vertical force F from bottom to top, in the case of a defect for example, the rods 62 and 64 each take a fraction of the effort F at their respective second connection points 70 and 72 , because these first connection points are placed on either side of the axle. The distribution of the force between the two connecting rods is a function of the position of the elastic member 74 between the connection points 66 and 68.

Sous l'effet de cet effort, les bielles 62 et 64 pivotent vers le haut par rapport au châssis 22 autour des premiers points de liaison 66 et 68, c'est-à-dire dans le sens horaire sur la figure 5. Sous l'effet de ces pivotements, les surfaces d'appui 86 et 88 tendent à se rapprocher. Dans l'exemple de réalisation de la figure 1, pour lequel l'angle β vaut environ 30°, le pivotement des bielles 62 et 64 conduit à exercer sur l'organe élastique 74 à la fois un effort de compression et un effort de cisaillement. Pour un angle β de 90°, l'organe élastique travaille en compressio n pure. Pour un angle β de 0°, l'organe élastique travaille en cisaillemen t pur.Under the effect of this effort, the connecting rods 62 and 64 pivot upwards relative to the frame 22 around the first connection points 66 and 68, that is to say in a clockwise direction on the figure 5 . Under the effect of these pivoting, the bearing surfaces 86 and 88 tend to get closer. In the exemplary embodiment of the figure 1 , for which the angle β is about 30 °, the pivoting of the rods 62 and 64 leads to exert on the elastic member 74 both a compressive force and a shear force. For an angle β of 90 °, the elastic member works in pure compression. For an angle β of 0 °, the elastic member works in pure shear.

Parallèlement, les bielles 62 et 64 pivotent par rapport à la boîte d'essieu 45 autour des seconds points de liaison 70 et 72, qui se déplacent verticalement vers le haut comme la figure 5 le représente en traits mixtes. Bien entendu, la boîte d'essieu 45 et son sommet 76 subissent également un mouvement vertical vers le haut, mais qui n'est pas représenté sur la figure 5. Les bielles 62 et 64 pivotent dans le sens horaire sur la figure 5 par rapport à la boîte d'essieu 45, et restent à un niveau inférieur au sommet 76 de la boîte d'essieu, qui s'est déplacé vers le haut.At the same time, the connecting rods 62 and 64 pivot with respect to the axle box 45 around the second connection points 70 and 72, which move vertically upwards like the figure 5 represents it in phantom. Of course, the axle box 45 and its top 76 also undergo a vertical upward movement, but which is not represented on the figure 5 . The connecting rods 62 and 64 rotate clockwise on the figure 5 relative to the axle box 45, and remain at a lower level than the top 76 of the axle box, which has moved upwards.

Le pivotement des bielles 62 et 64 entraîne une torsion, pour chaque bielle, des manchons élastiques 60 du premier point de liaison et également du second point de liaison.The pivoting of the connecting rods 62 and 64 causes torsion, for each connecting rod, of the elastic sleeves 60 of the first connection point and also of the second connection point.

Dans le second mode de réalisation de l'invention, la seconde partie surélevée 50 du plancher de caisse 14 ne couvre que les roues 24 et 26 situées du second côté. Les organes de suspension primaire bas 61 sont placés sous le couloir de circulation 52, lui-même situé par rapport au plan de roulement P5 du bogie, à un niveau compris entre 280 mm et 480 mm, de préférence compris entre 330 mm et 430 mm, et valant typiquement 380 mm.In the second embodiment of the invention, the second raised portion 50 of the body floor 14 covers only the wheels 24 and 26 located on the second side. The low primary suspension members 61 are placed under the circulation corridor 52, itself located relative to the running surface P5 of the bogie, at a level of between 280 mm and 480 mm, preferably between 330 mm and 430 mm. , and is typically 380 mm.

Le couloir de circulation s'étend dans ce cas pratiquement, considéré dans un plan perpendiculaire à la direction principale, depuis les réducteurs 42 et 46 ou le moteur 28 jusqu'aux roues 24 et 26 situées du second côté. Il présente une largeur de 900mm dans le cas d'un bogie non pivotant et de 650 mm dans le cas d'un bogie pivotant.In this case, the circulation corridor substantially extends, considered in a plane perpendicular to the main direction, from the gearboxes 42 and 46 or the motor 28 to the wheels 24 and 26 situated on the second side. It has a width of 900mm in the case of a non-swiveling bogie and 650mm in the case of a swiveling bogie.

Le bogie et le véhicule ferroviaire décrits ci-dessus présentent de multiples avantages.The bogie and railway vehicle described above have multiple advantages.

Du fait que le ou les moteurs sont montés sur le châssis, la chaîne cinématique de transmission entre le ou les moteurs et les roues est plus courte et mécaniquement plus simple. Par ailleurs, comme les réducteurs avant et arrière sont disposés d'une part entre le plan longitudinal médian des roues du véhicule et le plan longitudinal passant par les roues situées du premier côté du bogie, il est possible d'aménager dans le châssis de caisse un couloir de circulation bas, particulièrement large. Quand les organes de suspension primaire situés du second côté sur des sandwichs caoutchouc-métal en chevrons, le couloir s'étend entre, d'une part, les réducteurs et, d'autre part, les organes de suspension primaire situés du second côté, et présente une largeur d'environ 750mm, dans le cas d'un bogie non pivotant.Because the engine (s) are mounted on the chassis, the kinematic transmission chain between the engine (s) and the wheels is shorter and mechanically simpler. Moreover, since the front and rear reduction gears are arranged on the one hand between the median longitudinal plane of the wheels of the vehicle and the longitudinal plane passing through the wheels located on the first side of the bogie, it is possible to arrange in the chassis frame a low traffic corridor, particularly wide. When the primary suspension members located on the second side on rubber-to-metal herringbone sandwiches, the corridor extends between, on the one hand, the gear units and, on the other hand, the primary suspension members located on the second side, and has a width of about 750mm, in the case of a non-pivoting bogie.

Quand les organes de suspension primaire situés du second côté sont des organes bas, le couloir s'étend depuis les réducteurs jusqu'aux roues situées du second côté et présente une largeur de 900mm environ pour le bogie non pivotant et 650mm environ pour le bogie pivotant.When the primary suspension members located on the second side are bottom members, the corridor extends from the reducers to the wheels on the second side and has a width of about 900mm for the non-swiveling bogie and about 650mm for the swivel bogie .

Quand les organes de suspension primaire situés du second côté sont de type classique, par exemple des sandwichs caoutchouc métal en chevrons, leur largeur transversale doit être réduite de manière à préserver la largeur du couloir, car ces organes ne sont pas recouverts par le couloir. Cette contrainte n'existe plus quand on utilise des organes de suspension primaire du type bas, car ces organes sont sous le couloir.When the primary suspension members on the second side are of conventional type, for example metal rubber sandwiches in herringbone, their transverse width must be reduced so as to preserve the width of the corridor, since these bodies are not covered by the corridor. This constraint no longer exists when using primary suspension members of the low type, because these organs are under the corridor.

La disposition symétrique du ou des moteurs et des réducteurs par rapport au plan transversal médian des roues facilite cet aménagement.The symmetrical arrangement of the motor (s) and gearboxes relative to the median transverse plane of the wheels facilitates this arrangement.

Le ou chacun des deux moteurs d'entraînement du bogie peut être avantageusement aligné longitudinalement entre les deux réducteurs. Le ou chaque moteur et les réducteurs présentent transversalement sensiblement le même encombrement, de telle sorte qu'il subsiste un espace libre important entre le ou chaque moteur et les réducteurs d'une part et les roues situées du second côté du bogie pour laisser passer le couloir de circulation de la caisse.The or each of the two drive motors of the bogie can be advantageously aligned longitudinally between the two reducers. The or each motor and the gear units have transversely substantially the same size, so that there remains a large free space between the or each motor and the gearboxes on the one hand and the wheels on the second side of the bogie to let pass the circulation corridor of the cash register.

Les freins et les ressorts de suspension secondaires du bogie sont placés vers l'extérieur du bogie par rapport aux roues, de manière à ne pas gêner le passage du couloir de circulation de la caisse.The brakes and the secondary suspension springs of the truck are placed towards the outside of the truck relative to the wheels, so as not to hinder the passage of the traffic corridor of the body.

Le véhicule, du fait de la disposition des moteurs et des réducteurs sur le bogie, peut présenter un couloir bas particulièrement large entre deux parties de plancher surélevées, aptes à recevoir jusqu'à quatre rangées de trois sièges sans empiéter sur le couloir pour une caisse étroite (moins de 2400 mm de largeur), soit douze sièges au-dessus du bogie. Dans le cas d'une caisse large (plus de 2400 mm de largeur), il est possible de disposer quatre rangées de quatre sièges au-dessus du bogie sans empiéter sur le couloir, soit seize sièges au total. Deux sièges sont, dans ce cas, disposés au-dessus de la partie surélevée 48 et deux autres au-dessus de la partie surélevée 50.The vehicle, because of the arrangement of the engines and gearboxes on the bogie, may have a particularly wide low corridor between two raised floor sections, able to accommodate up to four rows of three seats without encroaching on the corridor for a box narrow (less than 2400 mm wide), ie twelve seats above the bogie. In the case of a wide body (more than 2400 mm wide), it is possible to have four rows of four seats above the bogie without encroaching on the corridor, ie sixteen seats in total. In this case, two seats are arranged above the raised portion 48 and two others above the raised portion 50.

Du fait que les réducteurs sont rassemblés d'un même côté du bogie, le couloir de circulation est décalé par rapport au plan médian de la caisse et parallèle à la direction principale de la caisse.Because the reducers are assembled on one side of the bogie, the traffic corridor is offset from the median plane of the body and parallel to the main direction of the body.

L'architecture du bogie permet de monter ce bogie sous la caisse soit pivotant autour d'un pivot sensiblement perpendiculaire au plan de roulement du véhicule, soit non pivotant, c'est-à-dire avec un débattement angulaire inférieur ou égal à 2°par rapport à la caisse.The architecture of the truck makes it possible to mount this bogie under the body either pivoting about a pivot substantially perpendicular to the rolling plane of the vehicle, or non-pivoting, that is to say with an angular displacement less than or equal to 2 ° compared to the cashier.

Le bogie de FR-A-2 604 676 ne peut être que non pivotant par rapport à la caisse, du fait que le moteur est monté sous la caisse. Les réducteurs qui relient mécaniquement le moteur aux essieux ne pourraient pas tolérer des changements d'orientation de 12° des essieux par rapport au mot eur.The bogie of FR-A-2 604 676 can only be non-pivoting with respect to the body, since the engine is mounted under the body. Reducers that mechanically connect the engine to the axles could not tolerate 12 ° axle shifts in relation to the engine.

Du fait que les suspensions primaires sont placées entre les roues, c'est-à-dire à l'intérieur et non à l'extérieur du bogie par rapport aux roues, il est possible de faire descendre les parois latérales 60 de la caisse sensiblement jusqu'à l'axe des roues, voire plus bas, tout en leur conférant un galbe. Comme le montre la figure 1, les parois 60 ne sont pas planes mais au contraire sont légèrement incurvées, et présentent une convexité tournée vers l'extérieur de la caisse. Par ailleurs, cette disposition des suspensions primaires facilite l'accès aux roues et aux disques de frein, en vue de leur maintenance ou de leur remplacement.Because the primary suspensions are placed between the wheels, that is to say inside and not outside the bogie relative to the wheels, it is possible to lower the side walls 60 of the box substantially. up to the axis of the wheels, or lower, while giving them a curve. As shown in figure 1 , the walls 60 are not flat but on the contrary are slightly curved, and have a convexity turned towards the outside of the box. Furthermore, this provision of the primary suspensions facilitates access to the wheels and brake discs, for maintenance or replacement.

Le bogie et le véhicule décrits ci-dessus peuvent présenter de multiples variantes.The bogie and vehicle described above may have multiple variants.

Les suspensions secondaires du bogie peuvent être de tout type, et comprendre par exemple des ressorts hélicoïdaux ou des dispositifs élastiques à chevrons. Le bogie, aussi bien dans le premier que dans le second mode de réalisation, peut comporter deux ou quatre organes de suspension secondaire.The secondary suspensions of the bogie can be of any type, and include for example helical springs or elastic devices herringbone. The bogie, both in the first and in the second embodiment, may comprise two or four secondary suspension members.

Les essieux liant en rotation les roues avant et les roues arrière peuvent être de tout type. Ils peuvent être du type coudé, comme décrit dans EP-0 911 239 . Ils peuvent également être de type découplé, comme décrit dans la demande portant le numéro de dépôt FR 06 00834 .The axles linking in rotation the front wheels and the rear wheels can be of any type. They can be of the angled type, as described in EP-0 911 239 . They can also be of decoupled type, as described in the application bearing the deposit number FR 06 00834 .

Les sièges 20 situés au-dessus de la partie de châssis surélevée 50 peuvent être orientés perpendiculairement aux sièges 20 situés au-dessus de la partie surélevée 48, c'est-à-dire de manière que les passagers soient assis dos à la parois latérale 60.The seats 20 located above the raised frame portion 50 may be oriented perpendicular to the seats 20 above the raised portion 48, i.e., so that the passengers are seated back to the side wall 60.

Tous les organes de suspension primaires peuvent être de type à chevrons. Inversement, tous les organes de suspension primaire peuvent être des organes bas situés entièrement sous un niveau de 300 mm environ par rapport au plan de roulement du bogie, pour des roues de diamètre 590 mm.All primary suspension members may be of herringbone type. Conversely, all the primary suspension members may be low members located entirely under a level of about 300 mm with respect to the running surface of the bogie, for wheels with a diameter of 590 mm.

Le véhicule ferroviaire peut être un véhicule léger de type tramway, ou un véhicule plus lourd, par exemple un train destiné aux courts ou aux longs parcours. The railway vehicle can be a light vehicle of the tramway type, or a heavier vehicle, for example a train intended for short or long journeys.

Claims (11)

  1. Powered bogie (16) for a railway vehicle, the bogie (16) comprising:
    - a bogie chassis (22);
    - two front wheels (24) transversely spaced apart from one another and two rear wheels (26) transversely spaced apart from one another, the front and rear wheels (24, 26) being connected to the bogie chassis (22), the front wheels (24) being longitudinally spaced apart from the rear wheels (26);
    - one or two driving motors (28, 54, 56);
    - transmission means (30) comprising a front reducing gear (42) for coupling the front wheels (24) to the or a motor (28, 54) and a rear reducing gear (46) for coupling the rear wheels (26) to the or a motor (28, 56);
    the or each motor (28, 54, 56) is mounted on the bogie chassis (22), the front and rear reducing gears (42, 46) being arranged between, on the one hand, a longitudinal plane (P1) midway between the two front wheels (24) and midway between the two rear wheels (26) and, on the other hand, a longitudinal plane (P2) passing through the front wheel (24) and the rear wheel (26) situated on the same, first transverse side of the bogie (16), characterized in that the driving motor(s) (54, 56) are aligned longitudinally between the front and rear reducing gears (42, 46) and are arranged between, on the one hand, said longitudinal plane (P1) midway between the two front wheels (24) and midway between the two rear wheels (26) and, on the other hand, said longitudinal plane (P2) passing through the front wheel (24) and the rear wheel (26) located on the same first transverse side of the bogie (16).
  2. Bogie according to claim 1, characterised in that the front and rear reducing gears (42, 46) are arranged in positions symmetrical to one another about a transverse plane (P3) midway between the front and rear wheels (24, 26).
  3. Bogie according to any one of claims 1 or 2, characterised in that it comprises braking elements (36, 38) for the front and rear wheels (24, 26) and secondary suspension components (34) suitable for suspending a railway vehicle body (12) on the bogie chassis (22), the braking elements (36, 38) and the secondary suspension components (34) being situated outside the bogie (16) relative to the wheels (24, 26).
  4. Bogie according to any one of claims 1 to 3, characterised in that it comprises primary suspension components (32, 33, 61) situated between the transmission means (30) and the bogie chassis (22), the primary suspension components (32, 33, 61) being placed inside the bogie (16) relative to the wheels (24, 26).
  5. Bogie according to claim 4, characterised in that at least some primary suspension components (61) are low components, each situated entirely below a level between 200 mm and 400 mm relative to the rolling plane (P5) of the bogie, for front and rear wheels (24, 26) with a diameter of 590 mm.
  6. Railway vehicle (10) comprising:
    - a body (12) which is elongate in shape in a principal direction, provided with a body chassis (14) ;
    - at least one bogie (16) according to any one of claims 1 to 5, connected to the body (12) and arranged below the body chassis (14);
    the body chassis (14) comprising a first raised portion (48) above the front and rear wheels (24, 26) situated on the first transverse side of the bogie (16) and above the front and rear reducing gears (42, 46), a second raised portion (50) at least above the front and rear wheels (24, 26) situated on a second transverse side of the bogie (16) opposite the first, and a lowered portion (52) forming a circulation corridor, substantially parallel to the principal direction, between the first and second raised portions (48, 50).
  7. Vehicle according to claim 6, characterised in that the circulation corridor is offset transversely towards the second raised portion (50) relative to a median plane (P4) of the body (12) and parallel to the principal direction.
  8. Vehicle according to either claim 6 or claim 7, characterised in that the bogie (16) is connected to the body (12) by pivot connection means.
  9. Vehicle according to either claim 6 or claim 7, characterised in that the bogie (16) is non-pivoting relative to the body (12).
  10. Vehicle according to any one of claims 6 to 9, characterised in that the circulation corridor (52) extends from the front and rear reducing gears (42, 46) to the front (24)and rear (26) wheels situated on the second side of the bogie (16).
  11. Vehicle according to any one of claims 6 to 9, characterised in that the bogie (16) comprises primary suspension components (33) arranged directly inside the bogie (16) relative to the front and rear wheels (24, 26) situated on the second side of the bogie (16), the circulation corridor (52) extending from the front and rear reducing gears (42, 46) to said primary suspension components (33).
EP08799848.0A 2007-04-05 2008-03-14 Motor-driven bogie for a streetcar Active EP2144801B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08799848T PL2144801T3 (en) 2007-04-05 2008-03-14 Motor-driven bogie for a streetcar

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0754311A FR2914607B1 (en) 2007-04-05 2007-04-05 MOTORIZED BOGIE FOR TRAMWAY
PCT/FR2008/050437 WO2008129207A1 (en) 2007-04-05 2008-03-14 Motor-driven bogie for a streetcar

Publications (2)

Publication Number Publication Date
EP2144801A1 EP2144801A1 (en) 2010-01-20
EP2144801B1 true EP2144801B1 (en) 2013-07-17

Family

ID=38740299

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08799848.0A Active EP2144801B1 (en) 2007-04-05 2008-03-14 Motor-driven bogie for a streetcar

Country Status (9)

Country Link
US (1) US8978563B2 (en)
EP (1) EP2144801B1 (en)
KR (1) KR101443167B1 (en)
CN (1) CN101678835B (en)
CA (1) CA2682820C (en)
ES (1) ES2430381T3 (en)
FR (1) FR2914607B1 (en)
PL (1) PL2144801T3 (en)
WO (1) WO2008129207A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2914610A1 (en) * 2007-04-05 2008-10-10 Alstom Transport Sa PRIMARY SUSPENSION DEVICE OF A RAIL VEHICLE BOGIE
FR2914609B1 (en) * 2007-04-05 2009-07-10 Alstom Transport Sa BOGIE FOR RAILWAY VEHICLE
FR2991956B1 (en) * 2012-06-18 2014-07-04 Alstom Transport Sa BOGIE OF A RAILWAY VEHICLE HAVING IMPROVED SUSPENSIONS, IN PARTICULAR FOR A LOW FLOOR TRAMWAY
CA2835586A1 (en) * 2012-12-04 2014-06-04 Spartan Motors, Inc. Dropped floor public interface transaction area for retail vehicles
FI125398B (en) * 2013-12-11 2015-09-30 Helsingin Kaupungin Liikennelaitos Liikelaitos Boggy and trolley construction for rail vehicles
CN106891912A (en) * 2015-12-17 2017-06-27 湖北时瑞达重型工程机械有限公司 The track engineering vehicle carriage that can be flexibly turned on 19 meters of curve bends
EP3263418B1 (en) 2016-07-01 2021-01-13 Západoceská Univerzita V Plzni Compact drive unit for traction vehicles
CN107472281A (en) * 2017-07-28 2017-12-15 中车南京浦镇车辆有限公司 A kind of axle single rail bogie of low land plate face straddle-type two
FR3076792B1 (en) * 2018-01-15 2020-11-20 Alstom Transp Tech BOGIE FOR RAIL VEHICLE
CN108099935A (en) * 2018-01-31 2018-06-01 沈阳新阳光机电科技有限公司 Bogie and rack railway coach
CN113978505B (en) * 2021-11-29 2024-06-25 西南交通大学 Hinge pin type bogie for urban rail vehicle driven simultaneously by single permanent magnet direct drive motor double shafts
CN114104009B (en) * 2021-12-31 2023-06-23 沈阳新阳光机电科技有限公司 Toothed rail train based on unpowered carriage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2910392A1 (en) * 1979-03-16 1980-09-25 Thyssen Industrie Railway vehicle or tram bogie mounting - has mitre gears inside individually driven wheels on rocker arms
FR2491023A1 (en) * 1980-09-26 1982-04-02 Alsthom Atlantique Single-motor bogie transmission system - has traction motor mounted parallel to axles and uses three right angled gearboxes
CH670228A5 (en) * 1986-02-27 1989-05-31 Schweizerische Lokomotiv
DE3704127A1 (en) * 1986-10-04 1988-04-14 Gutehoffnungshuette Man MULTIPLE RAIL TRANSPORT VEHICLE
DE10117031A1 (en) * 2001-04-05 2002-11-07 Siemens Ag Power train for rail vehicles
FR2826328B1 (en) * 2001-06-26 2003-08-29 Alstom MOTOR BOGIE FOR RAILWAY VEHICLE WITH INTEGRAL LOW FLOOR

Also Published As

Publication number Publication date
KR101443167B1 (en) 2014-09-22
CN101678835A (en) 2010-03-24
PL2144801T3 (en) 2013-12-31
KR20100016220A (en) 2010-02-12
WO2008129207A1 (en) 2008-10-30
FR2914607B1 (en) 2014-03-28
US20100132586A1 (en) 2010-06-03
CA2682820A1 (en) 2008-10-30
ES2430381T3 (en) 2013-11-20
FR2914607A1 (en) 2008-10-10
US8978563B2 (en) 2015-03-17
CN101678835B (en) 2012-08-08
EP2144801A1 (en) 2010-01-20
CA2682820C (en) 2015-12-15

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