EP2883774B1 - Bogie moteur de véhicule ferroviaire dans lequel le moteur est sensiblement coaxial à l'essieu - Google Patents

Bogie moteur de véhicule ferroviaire dans lequel le moteur est sensiblement coaxial à l'essieu Download PDF

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Publication number
EP2883774B1
EP2883774B1 EP14197408.9A EP14197408A EP2883774B1 EP 2883774 B1 EP2883774 B1 EP 2883774B1 EP 14197408 A EP14197408 A EP 14197408A EP 2883774 B1 EP2883774 B1 EP 2883774B1
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EP
European Patent Office
Prior art keywords
motor
axle
bogie
hollow shaft
axis
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
EP14197408.9A
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German (de)
English (en)
French (fr)
Other versions
EP2883774A1 (fr
Inventor
Alain Rodet
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 Technologies SAS
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Alstom Transport Technologies SAS
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Publication date
Application filed by Alstom Transport Technologies SAS filed Critical Alstom Transport Technologies SAS
Priority to PL14197408T priority Critical patent/PL2883774T3/pl
Publication of EP2883774A1 publication Critical patent/EP2883774A1/fr
Application granted granted Critical
Publication of EP2883774B1 publication Critical patent/EP2883774B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
    • B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
    • B61C9/44—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with hollow transmission shaft concentric with wheel axis

Definitions

  • the present invention relates to a motor vehicle bogie, of the type comprising at least one pair of wheels, the wheels of the or each pair being connected to each other by a shaft to form an axle, the bogie further comprising a motor, substantially coaxial with the axle, for driving the axle in rotation about its axis.
  • the invention also relates to a railway vehicle comprising such a bogie.
  • each motorized bogie In a railway vehicle, each motorized bogie, or motor bogie, generally comprises two pairs of wheels, the wheels of a pair being connected to each other by a shaft to form an axle, a chassis connecting said axles. one to the other, suspensions each interposed between a half-chassis and an axle, said suspension allowing relative vertical displacement of the axle relative to the corresponding half-chassis, and means for driving in rotation one axles or each axle.
  • These drive means comprise at least one motor and a mechanical device ensuring the transmission of the engine torque from the engine to the axle, as well as the transmission of the braking torque from the axle to the engine.
  • the drive means are differentiated by the distribution of their masses which are either “unsprung”, that is to say linked to the axle, or “suspended”, that is to say linked to the chassis of bogie above the suspensions.
  • These drive means are differentiated by their ease of integration into the bogie in terms of size, whether in width (that is to say parallel to the axis of the axle) or in length (parallel in the driving direction of the vehicle). They differ in complexity by the number of parts they include.
  • US 2,027,218 A a rail vehicle bogie comprising a motor mounted between the wheels and driving the wheels by means of two reducers.
  • US 2,027,218 A can be considered the closest state of the art.
  • An object of the invention is to provide a motor bogie incorporating axle drive means which are both compact and powerful.
  • Other objectives are to have training means which are simple to implement, and to reduce the unsprung masses.
  • the invention relates to a motor bogie according to claim 1.
  • the invention also relates to a railway vehicle comprising a motor bogie as defined above.
  • a horizontal plane is substantially parallel to the plane in which the axles extend and the vertical plane is substantially parallel to the plane in which the wheels extend.
  • the term “longitudinal” is defined relative to the direction in which a rail vehicle extends in a horizontal plane and the term “transverse” is defined in a direction substantially perpendicular to the longitudinal direction in a horizontal plane.
  • Each of the motor bogies 10 represented on the Figure 1 and 2 , comprises two pairs of wheels 20, the wheels 20 of each pair being connected to each other by a shaft to form an axle 22.
  • the axles 22 are connected to each other by a chassis 24, called exterior, comprising two half-chassis each secured to a respective axle 22.
  • external chassis is meant that the side members 26 of each half-chassis surround the wheels 20 in the transverse direction, that is to say that they extend outside the template formed by the wheels 20.
  • Each half-frame comprises two longitudinal members 26, extending substantially longitudinally, connected to one another by a cross member (not shown), extending substantially transversely.
  • Each beam 26 rests on the axle boxes 28 an axle 22, said axle boxes 28 being disposed substantially against the wheels 20 of axle 22, on either side of said wheels 20.
  • a primary suspension 30 is interposed between each beam 26 and the axle box 28 on which said beam 26 rests. This primary suspension 30 allows relative vertical movement of the axle 22 relative to the half-frame, that is to say that the half-frame is movable and suspended relative to the axle 22 in a substantially vertical direction.
  • the two half-chassis are held together so that the axles 22 remain parallel and the bogie 10 does not fold back on itself under the effect of a vertical load.
  • At least one of the axles 22, or the two axles 22, is (are) driven (s) in rotation by drive means 32 comprising a motor 34, a reduction gear 36, and a mechanical device 38 ensuring the transmission of the engine torque from motor 34 to axle 22, as well as the transmission of braking torque from axle 22 to motor 34.
  • the motor 34 is suspended, that is to say that it is rigidly connected to the chassis 24. It is moreover substantially coaxial with the axle 22, except for the deflections authorized by the suspension 30. Said movements authorized by the suspension 30 are in particular less than 30 mm in absolute value. Preferably, at rest, the motor 34 is coaxial with the axle 22.
  • the motor 34 is interposed between the wheels 20 of the axle 22.
  • the motor 34 is mounted around the axle 22. In other words, it defines a tubular cavity 40 through which the axle 22 passes.
  • the motor 34 comprises a rotor 42 and a stator 44.
  • the stator 44 is rigidly connected to the chassis 24 by a connecting member 46. In a rigid assembly, this connecting member 46 prohibits any movement of the stator 44 relative to the chassis 24.
  • the rotor 42 is coaxial with the stator 44.
  • Bearings 48 ensure the connection of the rotor 42 to the stator 44, while allowing the rotation of the rotor 42 about its axis relative to the stator 44.
  • the rotor 42 defines the tubular cavity 40, and the stator 44 is mounted around the rotor 42.
  • the motor 34 thus forms an internal rotor motor.
  • the reduction gear 36 is substantially coaxial with the axle 22.
  • the reducer 36 is a planetary gear reducer. It comprises in known manner a plurality of meshing elements 50, 52, 54, 56, including an inner sun gear 50 forming an input gear of the reduction gear 36, mounted around the axle 22, an outer sun gear 52, also called crown, coaxial to the inner planetary 50, a plurality of satellites 54 interposed between the inner sun gear 50 and the ring gear 52, each being meshed with the inner sun gear 50 and the ring gear 52, and a planet carrier 56, coaxial with the inner sun gear 50 and the ring gear 52, on which each satellite 54 is rotatably mounted around its axis.
  • the mechanical device 38 comprises a hollow shaft 60, a member 62, also called the drive plate, for coupling a suspended element of the transmission means 32 to the hollow shaft 60, and a member 64, also called the driven plate, d coupling of the hollow shaft 60 to an unsprung element.
  • the hollow shaft 60 is interposed between the axle 22 and the motor 34, in particular between the axle 22 and the rotor 42. It crosses the tubular cavity 40. It defines a cylindrical cavity 66 traversed by the axle 22. It is substantially coaxial with the axle 22, that is to say that the axis of the hollow shaft 60 intersects the axis of the axle 22, the angle between the two axes always being less than 3 ° in absolute value.
  • the coupling members 62, 64 are arranged at the axial ends of the hollow shaft 60. They thus frame the hollow shaft 60 transversely.
  • Each coupling member, respectively 62, 64, is adapted to allow an inclination of the axis of the hollow shaft 60 relative to the axis of the suspended element, respectively relative to the axis of the unsprung element .
  • each coupling member respectively 62, 64, comprises a rigid annular plate 70, substantially coaxial with the axle 22, a first pair of rigid rollers 72 integral with the hollow shaft 60, and a second pair of rigid rollers 74 integral with the suspended element, respectively with the unsprung element.
  • the plate 70 defines for each roller 72, 74 a respective cylindrical cavity 76 for receiving said roller 72, 74.
  • Each roller 72, 74 has a curved cylindrical surface and has a maximum diameter less than that of its respective reception cavity 76.
  • Each coupling member 62, 64 further comprises a respective sleeve 78 for each roller 72, 74, said sleeve 78 enveloping the roller 72, 74 by filling the clearance between the roller 72, 74 and its respective receiving cavity 76, said sleeve 78 being of elastic material, for example rubber.
  • the plate 70 and the rollers 72, 74 are typically made of steel.
  • the reduction gear 36 is not suspended and constitutes the unsprung element coupled to the hollow shaft 60 by means of the coupling member 64, the suspended element coupled to the hollow shaft 60 by means of the coupling member 62 being constituted by the motor 34.
  • the planet carrier 56 is then secured to the axle 22, in particular to one of the wheels 20 of the axle 22, and the crown 52 is linked to the chassis 24 by a reaction rod 80 articulated to the crown 52 and to the chassis 24, so that said connecting rod 80 is adapted to take up the torques by allowing the deflections due to movements between the chassis 24 and the axle 22.
  • the rotor 42 drives, by means of the coupling member 62, the hollow shaft 60 in rotation about its axis. This rotation is transmitted, via the coupling member 64, to the inner sun gear 50 of the reduction gear 36.
  • the inner sun gear 50 in turn drives the satellites 54 which roll on the crown 52. In doing so, the satellites 54 cause the planet carrier 56 to rotate about its axis and, as a result, the axle 22 to rotate.
  • the axis of the motor 34 remains fixed relative to the chassis 24, while the axis of the reduction gear 36 follows the displacement of the axle 22. It follows a relative displacement of the axes of the motor 34 and of the reduction gear 36, which, if they remain parallel to one another, are then no longer aligned.
  • the hollow shaft 60 inclines relative to the direction of the axes of the motor 34 and of the reduction gear 36, this inclination being permitted thanks to the particular shape of the rollers 72, 74 and to the use of the sleeves of elastic material 78 to fill the clearances between the rollers 72, 74 and their respective receiving cavities 76.
  • This embodiment has the advantage of having a torque transmitted at the level of the coupling members 62, 64 which remains relatively low, so that it is possible to use light and space-saving coupling members.
  • This embodiment has the drawback, however, of presenting higher unsprung masses, and of requiring the installation of a bearing resistant to high rotational speeds at the interface between the inner sun gear 50 and the axle 22.
  • the reduction gear 36 is suspended and constitutes the suspended element coupled to the hollow shaft 60 via the coupling member 62, the unsprung element coupled to the hollow shaft 60 via the coupling member 64 being constituted by the axle 22, in particular by a wheel 20 of the axle 22.
  • the rotor 42 of the motor 34 is then secured to the inner sun gear 50, which thus forms an output pinion of the motor 34 meshing directly on the reduction gear 36, and the stator 44 is integral with the crown 52.
  • the rotor 42 directly drives the inner sun gear 50 of the reduction gear 36.
  • the inner sun gear 50 in turn drives the satellites 54 which roll on the crown 52.
  • the satellites 54 cause the planet carrier 56 to rotate around its axis.
  • the rotation of the planet carrier 56 is transmitted to the hollow shaft 60 via the coupling member 62.
  • the rotation of the hollow shaft 60 around its axis finally causes the axle 22 to rotate by means of the coupling member 64.
  • the axes of the motor 34 and of the reduction gear 36 remain fixed relative to the chassis 24. Even if they remain parallel to the axis of the axle 22, the axes of the motor 34 and of the reduction gear 36 are then no longer aligned with the axis of the axle 22.
  • the hollow shaft 60 inclines relatively to the direction of the axes of the reduction gear 36 and of the axle 22, this inclination being permitted thanks to the particular shape of the rollers 72, 74 and to the use of sleeves made of elastic material 78 to fill the clearances between the rollers 72, 74 and their respective receiving cavities 76.
  • This embodiment has the advantage of having few unsprung masses.
  • the fact of linking the motor 34 to the reduction gear 36 makes it possible to gain in compactness of the assembly.
  • the torque transmitted by the coupling members 62, 64 is greater, which requires the use of heavier and bulky coupling members.
  • the drive of the axle is carried out by means of a device combining power and compactness.
EP14197408.9A 2013-12-11 2014-12-11 Bogie moteur de véhicule ferroviaire dans lequel le moteur est sensiblement coaxial à l'essieu Active EP2883774B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14197408T PL2883774T3 (pl) 2013-12-11 2014-12-11 Wózek napędowy dla pojazdu szynowego, w którym silnik jest zasadniczo współosiowy z osią

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1362429A FR3014399B1 (fr) 2013-12-11 2013-12-11 Bogie moteur de vehicule ferroviaire dans lequel le moteur est sensiblement coaxial a l'essieu

Publications (2)

Publication Number Publication Date
EP2883774A1 EP2883774A1 (fr) 2015-06-17
EP2883774B1 true EP2883774B1 (fr) 2020-03-04

Family

ID=50069206

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14197408.9A Active EP2883774B1 (fr) 2013-12-11 2014-12-11 Bogie moteur de véhicule ferroviaire dans lequel le moteur est sensiblement coaxial à l'essieu

Country Status (5)

Country Link
EP (1) EP2883774B1 (es)
CN (1) CN104709293B (es)
ES (1) ES2793652T3 (es)
FR (1) FR3014399B1 (es)
PL (1) PL2883774T3 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3057042B1 (fr) * 2016-09-30 2018-11-30 Alstom Transport Technologies Reducteur epicycloidal, bogie comprenant un tel reducteur et vehicule ferroviaire associe
CN108116427A (zh) * 2016-11-29 2018-06-05 中车大同电力机车有限公司 一种具有挠性输出端的空心轴牵引电机装置
DE102018009993A1 (de) 2018-12-19 2020-06-25 Süddeutsche Gelenkscheibenfabrik GmbH & Co. KG Antriebsanordnung für ein Schienenfahrzeug
FR3116255B1 (fr) * 2020-11-13 2022-11-18 Alstom Transp Tech Bogie de véhicule ferroviaire, véhicule ferroviaire et procédé d’usinage associés

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1055598A (en) * 1909-07-12 1913-03-11 Dmitry Balachowsky Driving-axle.
US2027218A (en) * 1933-08-18 1936-01-07 Euclid Road Machinery Company Axle unit
JPH08244605A (ja) * 1995-03-14 1996-09-24 Toyo Electric Mfg Co Ltd 電気車両用駆動装置
DE10047911A1 (de) * 2000-09-27 2002-04-18 Siemens Ag Antrieb eines Radsatzes
DE10355267A1 (de) * 2003-11-26 2005-06-30 Siemens Ag Elektrische Maschine
WO2006051046A1 (de) 2004-11-11 2006-05-18 Siemens Aktiengesellschaft Halbabgefederter direktantrieb für ein schienenfahrzeug

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
EP2883774A1 (fr) 2015-06-17
FR3014399B1 (fr) 2017-05-26
ES2793652T3 (es) 2020-11-16
CN104709293B (zh) 2019-01-22
PL2883774T3 (pl) 2020-10-19
CN104709293A (zh) 2015-06-17
FR3014399A1 (fr) 2015-06-12

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