EP4112413B1 - Drehgestell und entsprechendes schienenfahrzeug - Google Patents

Drehgestell und entsprechendes schienenfahrzeug Download PDF

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Publication number
EP4112413B1
EP4112413B1 EP22181266.2A EP22181266A EP4112413B1 EP 4112413 B1 EP4112413 B1 EP 4112413B1 EP 22181266 A EP22181266 A EP 22181266A EP 4112413 B1 EP4112413 B1 EP 4112413B1
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EP
European Patent Office
Prior art keywords
bogie
gear
wheel
railway
rail
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP22181266.2A
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English (en)
French (fr)
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EP4112413A1 (de
Inventor
Ludovic FAURE
Alain Rodet
Cyrille Benais
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 Holdings SA
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Alstom Holdings SA
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Publication date
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Publication of EP4112413A1 publication Critical patent/EP4112413A1/de
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Publication of EP4112413B1 publication Critical patent/EP4112413B1/de
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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
    • B61C9/28—Transmission systems in or for locomotives or motor railcars with rotary prime movers, e.g. turbines
    • B61C9/30—Transmission systems in or for locomotives or motor railcars with rotary prime movers, e.g. turbines mechanical
    • 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
    • B61F3/16—Types of bogies with a separate axle for each wheel

Definitions

  • the present invention relates to a bogie for a railway vehicle, the bogie comprising a chassis on which a body of the railway vehicle is supported and railway wheels for supporting and guiding the chassis along a railway track.
  • bogies are, among other things, described in the documents EP1247714A1 Or EP3650304A1 .
  • the multi-articulated tram concept is not suitable and it is desirable to maximize the angle of rotation authorized between the bogie frame and the body of the railway vehicle, to come closer to a more conventional design. In this case we speak of a pivoting bogie.
  • a body having a lowered floor that is to say a floor fairly close to the ground and, preferably, extending substantially to the same level in the box, and to provide wide circulation corridors in said box. This facilitates the movement of passengers in the rail vehicle and access to the rail vehicle from the outside, particularly for travelers having difficulty moving.
  • An aim of the invention is to provide a railway vehicle bogie adapted to receive a body with a lowered floor while allowing a significant angle of rotation between the chassis of the bogie and the body of the vehicle.
  • the subject of the invention is a bogie of the aforementioned type, in which at least one of the railway wheels is a driving railway wheel carried by a wheel hub guided in rotation relative to the chassis by means of a guide assembly rotating comprising two rolling bearings and coupled to a traction motor via a gear transmission(s) comprising an output gear having a driving gear meshing with a driven gear which is mounted on the wheel hub and which comprises a ring gear and a ring gear carrier offset axially relative to each other, the gear carrier being closer to the driving railway wheel than the gear ring.
  • the invention also relates to a railway vehicle comprising at least one bogie and a vehicle body carried by said bogie, the body comprising a lowered floor.
  • FIG. 1 represents a bogie 10 of a railway vehicle intended to equip a railway vehicle.
  • the rail vehicle is for example a rail vehicle intended for intra-urban transport such as a tramway.
  • the bogie 10 is intended to support and guide the railway vehicle along a railway track, in particular a railway track formed of two rows of parallel rails (not shown).
  • orientations are indicated with respect to a longitudinal direction X-X' corresponding to the ordinary direction of movement of the railway vehicle along the railway track, a transverse direction Y-Y' orthogonal to the longitudinal direction X-X', s 'extending in a horizontal plane in ordinary operation of the railway vehicle, and a direction of elevation Z-Z' substantially orthogonal to the transverse direction Y-Y' and to the longitudinal direction X-X'.
  • the bogie 10 includes a chassis 12 and railway wheels 14.
  • the chassis 12 is configured to support a box (not shown) defining a compartment for passengers, and the railway wheels 14 are configured to support and guide the chassis 12 along the railway track.
  • Each railway wheel 14 is mounted to rotate on the chassis 12 around a wheel axle.
  • the railway wheels 14 are associated in pairs thus forming two axles extending in the transverse direction Y-Y'.
  • the railway wheels 14 define between them a space E, shown on the Figure 1 .
  • the space E extending between the railway wheels 14 in the transverse direction Y-Y'.
  • the bogie 10 is configured to support a body (not shown) comprising a lowered floor 15.
  • the area of the floor 15 located above the bogie 10 is for example located at a height less than the diameter of the railway wheels 14, the height being measured in the direction of elevation ZZ ' and in relation to the tops of the railway rails.
  • the floor 15 of said body passes in the space E delimited transversely between the railway wheels 14 of an axle.
  • the area of the floor 15 located above the bogie 10 extends for example to a height substantially equal to or less than 480 mm, in particular equal to or less than 450 mm, the height being measured in the direction of elevation Z-Z' and relative to the tops of the railway rails.
  • the floor 15 extends substantially at the same level over the entire body, including above the bogie 10.
  • the floor 15 located above the bogie 10 and extending between the railway wheels 14 advantageously has a width equal to or greater than 450 mm, in particular equal to or greater than 500 mm, the width being measured in the direction transversal Y-Y'.
  • Such a width of the floor 15 of said body facilitates the movement of passengers in the corridor.
  • Bogie 10 is a pivoting bogie.
  • the bogie 10 is configured to support the railway vehicle body by allowing pivoting of the railway vehicle body relative to the chassis 12 around a pivot axis substantially parallel to the direction of elevation Z-Z', as is illustrated on the figure 2 .
  • the bogie 10 comprises for example a joint 13 which is configured so that the body rests on the chassis 12 via this joint, allowing the body to pivot relative to the chassis 12.
  • the floor 15 of the body can limit the maximum pivot angle ⁇ of the body relative to the bogie 10.
  • the pivot angle ⁇ of the body relative to the bogie 10 is measured relative to the longitudinal direction X-X'.
  • the arrangement of the transmission near the railway wheels 14 is designed so as to allow a satisfactory pivot angle of the body relative to the boge 10.
  • the bogie 10 is preferably configured such that the maximum authorized pivot angle ⁇ of the body relative to the chassis 12 is for example equal to or greater than 10°, in particular equal to or greater than 12.5°.
  • Bogie 10 is a motor bogie.
  • the bogie 10 comprises at least one traction motor 16, each traction motor 16 is coupled to at least one of the railway wheels 14 for driving this railway wheel 14 in rotation.
  • Each railway wheel 14 coupled to a traction motor 16 is a railway driving wheel 14.
  • the bogie 10 comprises a respective traction motor 16 associated with each railway wheel 14 for rotating this railway wheel 14.
  • Each motor 16 is associated with a single wheel among the railway wheels 14.
  • Each motor 16 drives it in rotation only the associated railway wheel 14.
  • each motor 16 is located outside the space E located between the railway wheels 14 in the transverse direction Y-Y'.
  • each motor 16 does not occupy the space E to leave more room for the passage of the floor 15 of the body supported by the bogie 10.
  • Each railway driving wheel 14 is for example rotatably mounted on the chassis 12 via an axle box 26 which integrates the transmission elements.
  • the bogie 10 preferably comprises a respective axle box 26 associated with each railway driving wheel 14.
  • axle box 26 associated with each railway driving wheel 14 is located in the space E delimited transversely between the railway wheels 14.
  • Each railway driving wheel 14 is carried by a wheel hub 24 which is guided in rotation relative to the chassis 12 via a rotation guide assembly 17 interposed between the wheel hub 24 carrying the railway wheel 14 and the axle box 26 associated to allow the rotation of the railway wheel 14 around its axis.
  • the rotation guide assembly 17 comprises two rolling bearings 50, 52, each rolling bearing 50, 52 being interposed between the wheel hub 24 and the axle box 26.
  • the rotation guide assembly 17 comprises for example a first rolling bearing 50 and a second rolling bearing 52 spaced from one another along the wheel hub 24.
  • the axle box 26 is hollow. It has an external side wall and an internal side wall spaced transversely from one another, the internal side wall being closer to the median longitudinal plane of the bogie 10 than the external side wall.
  • the outer side wall is closer to the railway wheel 14 than the inner side wall.
  • Each rolling bearing is for example interposed between the wheel hub 24 and a respective side wall of the axle box 26 among the internal side wall and the external side wall.
  • Each railway wheel 14 is rotatably coupled to an output shaft of the associated traction motor 16 via a gear transmission(s).
  • the gear transmission(s) is configured to transmit movement from the output shaft of the traction motor 16 to the wheel hub 24 carrying the railway wheel 14.
  • the gear transmission(s) is preferably housed internally of axle box 26.
  • the gear transmission(s) is configured for a ratio between the speed of rotation of the output shaft of the traction motor 16 and the speed of rotation of the wheel hub 24 carrying the railway wheel 14 which is strictly greater than 1.
  • the gear transmission(s) thus forms a speed reducer.
  • the gear transmission(s) comprises an output gear 18 having a driving gear 34 meshing with a driven gear 36, which is for example keyed to the wheel hub carrying the railway wheel 14.
  • the driven gear 36 is coaxial with the railway wheel 14 and the wheel hub 24, on which it is mounted.
  • the driven gear 36 comprises a gear ring 38 carrying the teeth of the driven gear 36, a gear carrier 40, and a connecting part 42 connecting the gear ring 38 to the gear carrier 40.
  • the crown carrier 40 is engaged on the wheel hub 24 in such a way that the driven toothed wheel 36 is linked in rotation with the wheel hub 24.
  • the crown holder 40 and the toothed crown 38 are offset axially relative to each other.
  • the crown carrier 40 is offset relative to the toothed crown 38 along the wheel hub 24.
  • the connecting part 42 has, for example, a general conical shape flaring from the crown holder 40 towards the toothed crown 38.
  • the driven gear wheel 36 Due to the relative axial offset of the gear ring 38 and the gear carrier 40, the driven gear wheel 36 defines a housing 43 which is delimited radially by the gear ring 38.
  • the driven gear 36 is for example mounted on the wheel hub 24 in such a way that the ring gear 40 is closer to the railway wheel 14 than the gear ring 38.
  • the housing 43 is located on the side of the driven gear 36 opposite the railway wheel 14.
  • the output gear 18 is a gear with parallel axes, the axis of the driving gear 34 being parallel to the axis of the driven gear 36.
  • the driven toothed wheel 36 is located along the wheel hub 24 between the first rolling bearing 50 and the second rolling bearing 52.
  • the first rolling bearing 50 is located along the wheel hub 24 between the railway wheel 14 and the driven gear 36.
  • the second rolling bearing 52 is located along the wheel hub 24 on the side of the driven gear 36 opposite the railway wheel 14.
  • the relative axial offset of the ring gear 38 and the ring gear carrier 40 of the driven gear wheel 36 wedged on the wheel hub 24 allows an axially compact arrangement of the rotating guide assembly 17 and the driven gear wheel 36 on along the wheel hub 24, while allowing the meshing of the driven gear 36 with the driving gear 34 of the output gear 18.
  • the crown carrier 40 can be positioned axially closer to the railway wheel 14 than the toothed crown 38, and the second rolling bearing 52 can be moved closer to the railway wheel 14 with respect to the case where the crown carrier 40 would not be offset axially relative to the toothed ring 38.
  • the second rolling bearing 52 is arranged along the wheel hub 24 in such a way that it is at least partly surrounded by the toothed ring 38 of the driven toothed wheel 36.
  • the second rolling bearing 52 is surrounded by the toothed ring 38 of the driven toothed wheel 36.
  • the second rolling bearing 52 is arranged along the wheel hub 24 in the housing 43 delimited radially by the toothed ring 38, and in particular in the vertical plane formed by the toothed ring 38. It is thus possible to limit the size of the output gear 18 located on the internal side of the railway wheel 14, to allow significant angular movement of the body supported by the bogie, despite the presence of a lowered floor 15 passing between the railway wheels 14.
  • the axle box 26 is for example provided with a decreasing width from a portion of the axle box 26 connected to the chassis towards a portion of the axle box 26 carrying the wheel hub 24.
  • the axle box 26 comprises an internal side wall 27 which can be inclined in such a way that it deviates transversely from the median vertical plane of the bogie 10 in a progressive manner when one travels this internal side wall horizontally away from the pivot axis of the body relative to the bogie 10.
  • the internal side wall 27 of the axle box 26 is inclined at an angle of inclination ⁇ , measured relative to the longitudinal direction XX', greater than 10°.
  • the angle of inclination ⁇ of the internal side wall 27 of the axle box 26 is substantially equal to the maximum authorized pivot angle ⁇ of the body relative to the bogie 10.
  • Such a bogie 10 makes it possible to authorize a pivoting between the chassis 12 of the bogie and the body of the vehicle by an angle ⁇ greater than 10°, which allows the railway vehicle to operate on railway tracks with high curvatures (ie low radii of curvature).
  • the inclined internal side wall 27 of the axle box 26 offers the advantage of being able to maximize said angle of rotation and of defining a corridor floor 15 of sufficient width to be able to authorize the movement of passengers on said corridor.
  • the bogie 10 is suitable for carrying a body with a lowered floor 15.
  • the invention is not limited to the exemplary embodiments and variants described above, other exemplary embodiments and other variants being possible.
  • each of the railway wheels 14 is driven and associated with a dedicated traction motor.
  • the bogie 10 can comprise two traction motors 16.
  • the same traction motor 16 can be coupled to two railway driving wheels 14, these two railway driving wheels 14 being linked in rotation by a shaft, for example a shaft offset relative to the axis of the railway wheels 14.
  • Such a transmission shaft is for example housed in a spacer crosspiece 32 extending transversely between the axle boxes 26 of these railway wheels 14.
  • the gear transmission(s) further comprises an input gear 46 interposed between the output shaft of the traction motor 16 and the output gear 18.
  • the input gear 46 is for example a gear with parallel axes, the axes of rotation of the toothed wheels of this input gear 46 being parallel to each other, and, preferably, to those of the output gear 18.
  • the two gears 18, 46 together form a gear train 47 configured to transmit the rotation of the output shaft of the motor 16 to the wheel hub 24 carrying the railway wheel 14.
  • the input gear 46 is shifted towards the inside of the bogie 10 and the output gear 18 is shifted towards the wheel 14.
  • the distance taken in the transverse direction Y-Y' between the input gear 46 and the railway wheel 14 is greater than the distance taken in the transverse direction Y-Y' between the output gear 18 and the railway wheel 14.
  • the distance taken in the transverse direction Y-Y' between the input gear 46 and the railway wheel 14 is greater than the distance taken in the transverse direction Y-Y' between the second rolling bearing 52 and the railway wheel 14.
  • the input gear 46 and the output gear 18 each have a reduction ratio strictly greater than 1 and then form a first reduction stage and a second reduction stage.
  • the gear transmission(s) makes it possible, in addition to adjusting the transmission ratio between the motor 16 and the railway wheel 14, to transmit the torque from the traction motor 16 to the railway wheel 14 without aligning the axes of the hub wheel 24 carrying the railway wheel 14 and the output shaft of the traction motor 16 in the transverse direction Y-Y'.
  • the traction motor 16 and the railway wheel 14 are offset in the longitudinal direction X-X' and/or the elevation direction Z-Z', which allows a compact arrangement reducing the lateral bulk of the bogie 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • General Details Of Gearings (AREA)
  • Rolling Contact Bearings (AREA)
  • Gear Transmission (AREA)

Claims (10)

  1. Motordrehgestell für Schienenfahrzeug, umfassend einen Rahmen (12) und Schienenräder (14), wobei mindestens eines der Schienenräder (14) ein angetriebenes Schienenrad (14) ist, das von einer Radnabe (24) getragen wird, die in Bezug auf den Rahmen (12) über eine Drehführungsanordnung (17), umfassend zwei Wälzlager (50, 52) geführt wird und über ein Zahnradgetriebe(n), umfassend ein Ausgangszahnrad (18), das ein antreibendes Zahnrad (34) aufweist, das mit einem angetriebenen Zahnrad (36) in Eingriff ist, das an der Radnabe (24) montiert ist und das einen Zahnkrank (38) und einen Kranzträger (40) umfasst, die axial zueinander versetzt sind, wobei der Kranzträger (40) näher an dem Antriebsschienenrad (14) ist als der Zahnkranz (38) mit einem Fahrmotor (16) gekoppelt ist, dadurch gekennzeichnet, dass das Drehgestell konfiguriert ist, um einen Schienenfahrzeugkasten zu tragen, der einen Boden (15) besitzt, der durch den Raum (E) verläuft, der zwischen den Schienenrädern (14) begrenzt ist, indem es ein Schwenken des Kastens in Bezug auf das Drehgestell (10) um eine im Wesentlichen vertikale Schwenkachse zulässt.
  2. Drehgestell nach Anspruch 1, wobei eines der Wälzlager (52) der Drehführungsanordnung (17) von dem Zahnkranz (38) des angetriebenen Zahnrads (36) umgeben ist, insbesondere entlang der Radnabe (24) in einer Aufnahme (43) angeordnet ist, die von dem Zahnkranz (38) des angetriebenen Zahnrads (36) radial begrenzt wird.
  3. Drehgestell nach einem der vorherigen Ansprüche, wobei eines der Wälzlager (50) zwischen dem Schienenrad (14) und dem angetriebenen Zahnrad (36) entlang der Radnabe (24) angeordnet ist, wobei das andere Wälzlager (52) auf der dem Schienenrad (14) gegenüberliegenden Seite des angetriebenen Zahnrads (36) angeordnet ist.
  4. Drehgestell nach einem der vorherigen Ansprüche, wobei die Radnabe (24) über ein Achslager (26) drehbar an dem Rahmen (12) montiert ist, wobei das Zahnradgetriebe(n) im Inneren des Achslagers (26) untergebracht ist.
  5. Drehgestell nach Anspruch 4, wobei das Achslager (26) eine innere Seitenwand (27) umfasst, die geneigt ist, und zwar insbesondere unter einem Neigungswinkel (α), gemessen in Bezug auf die Längsrichtung X-X', von mehr als 10°.
  6. Drehgestell nach einem der vorherigen Ansprüche, wobei das Zahnradgetriebe ein Eingangszahnrad (46) umfasst, das zwischen einer Ausgangswelle des Fahrmotors (16) und dem Ausgangszahnrad (18) angeordnet ist, wobei der in der Querrichtung Y-Y' genommene Abstand zwischen dem Eingangszahnrad (46) und dem Schienenrad (14) größer ist als der Abstand zwischen dem Ausgangszahnrad (18) und dem Schienenrad (14).
  7. Drehgestell nach einem der vorherigen Ansprüche, wobei sich der Motor (16) außerhalb eines Raums (E) befindet, der sich zwischen den Schienenrädern (14) befindet.
  8. Drehgestell nach einem der vorherigen Ansprüche, wobei das Drehgestell (10) konfiguriert ist, um eine Drehung des Wagenkastens in Bezug auf den Rahmen (12) um die Schwenkachse mit einem maximalen Schwenkwinkel (β) von gleich wie oder größer als 10°, insbesondere gleich wie oder größer als 12,5°, für einen Boden (15) zuzulassen, der sich zwischen den Schienenrädern (14) erstreckt und eine Breite von gleich wie oder größer als 450 mm, insbesondere gleich wie oder größer als 500 mm, aufweist.
  9. Drehgestell nach einem der Ansprüche 4 bis 8, wobei das mit jedem angetriebenen Schienenrad (14) assoziierte Achslager (26) in dem Raum (E) angeordnet ist, der quer zwischen den Schienenrädern (14) begrenzt ist.
  10. Schienenfahrzeug, umfassend mindestens ein Drehgestell (10) nach einem der vorherigen Ansprüche und einen von dem Drehgestell (10) getragenen Wagenkasten, wobei der Wagenkasten einen abgesenkten Boden (15) aufweist.
EP22181266.2A 2021-06-28 2022-06-27 Drehgestell und entsprechendes schienenfahrzeug Active EP4112413B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2106917A FR3124472A1 (fr) 2021-06-28 2021-06-28 Bogie et véhicule ferroviaire associé

Publications (2)

Publication Number Publication Date
EP4112413A1 EP4112413A1 (de) 2023-01-04
EP4112413B1 true EP4112413B1 (de) 2023-11-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22181266.2A Active EP4112413B1 (de) 2021-06-28 2022-06-27 Drehgestell und entsprechendes schienenfahrzeug

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EP (1) EP4112413B1 (de)
FR (1) FR3124472A1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833858U (ja) * 1981-08-31 1983-03-05 東洋電機製造株式会社 車両用歯車装置
FR2664222B1 (fr) * 1990-07-05 1993-01-15 Alsthom Gec Bogie a roues independantes motorisees pour vehicule ferroviaire.
FR2822780B1 (fr) * 2001-04-02 2003-05-16 Alstom Bogie pour vehicules ferroviaires a roues a ecartement variable
FR3088042B1 (fr) * 2018-11-06 2020-11-27 Alstom Transp Tech Bogie pour vehicule ferroviaire

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EP4112413A1 (de) 2023-01-04
FR3124472A1 (fr) 2022-12-30

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