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EP4001048A1 - Railway vehicle bogie, associated railway vehicle and machining method - Google Patents

Railway vehicle bogie, associated railway vehicle and machining method Download PDF

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Publication number
EP4001048A1
EP4001048A1 EP21207473.6A EP21207473A EP4001048A1 EP 4001048 A1 EP4001048 A1 EP 4001048A1 EP 21207473 A EP21207473 A EP 21207473A EP 4001048 A1 EP4001048 A1 EP 4001048A1
Authority
EP
European Patent Office
Prior art keywords
bogie
hub
axle
shaft
machining
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.)
Granted
Application number
EP21207473.6A
Other languages
German (de)
French (fr)
Other versions
EP4001048B1 (en
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 Holdings SA
Original Assignee
Alstom Transport Technologies SAS
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Publication date
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Publication of EP4001048A1 publication Critical patent/EP4001048A1/en
Application granted granted Critical
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Classifications

    • 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
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
    • 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
    • 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
    • B61F15/00—Axle-boxes
    • 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
    • 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
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
    • B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
    • B61F5/301—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating metal springs
    • B61F5/302—Leaf springs
    • 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
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
    • B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
    • B61F5/32—Guides, e.g. plates, for axle-boxes
    • B61F5/325—The guiding device including swinging arms or the like to ensure the parallelism of the axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/50—Other details
    • B61F5/52—Bogie frames

Definitions

  • the present invention relates to a railway vehicle bogie.
  • the present invention also relates to a railway vehicle comprising such a railway bogie.
  • the present invention also relates to a method of machining such a bogie.
  • a bogie comprises a frame and axles, each axle comprising two coaxial wheels mounted to rotate on the frame.
  • the bogie presents a risk of premature wear due to various misalignments of the parts of the bogie under the load of the car.
  • One of the aims of the invention is therefore to propose a bogie presenting less risk of premature wear and thus alleviating the maintenance requirements on the bogie.
  • the subject of the invention is a railway vehicle bogie capable of passing from a rest configuration to an active configuration in which the bogie supports at least one vertical load, comprising a frame; at least one pair of wheels; for each pair of wheels, a shaft connecting the two wheels of said pair of wheels, each shaft extending along an axle axis; for each wheel, a wheel hub fixed to the wheel and to the associated shaft, said shaft being inserted into the hub, each hub extending along a hub axis; for each wheel, an axle box fixed to the frame and receiving the associated hub, each hub being rotatable relative to the associated axle box; for each hub, the hub axis forms a non-zero camber angle with the axle axis of the associated shaft when the bogie is in the rest configuration.
  • the invention also relates to a railway vehicle comprising at least one bogie as defined above.
  • the machining method comprises one or more of the following optional characteristics: the prestressing of the transverse beam is greater than an equivalent load of 5000 kg, in particular greater than 8000 kg, the bogie being initially in the rest configuration, the method comprising at least one step of machining each axle box so as to receive the associated hub, the machining being carried out so that the hub axle of said hub forms the non-zero camber angle.
  • the figure 1 represents a railway vehicle 10 traveling on rails 12 extending longitudinally.
  • the railway vehicle 10 comprises at least one car 14 and at least one bogie 16.
  • Each car 14 has an interior volume 18 configured to receive passengers and/or goods to be transported.
  • the bogie 16 is arranged for example at one end of the car 14 and supports two adjacent cars 14 when the railway vehicle 10 comprises several cars 14. According to a conventional embodiment, the or each car 14 is supported by two bogies 16 at each from its ends.
  • the bogie 16 is capable of moving from a rest configuration to an active configuration.
  • the bogie 16 In the rest configuration, the bogie 16 is away from the cars 14 and therefore does not support any vertical load.
  • the bogie 16 is in the rest configuration before the assembly of the railway vehicle 10 during its manufacture.
  • the bogie 16 supports a vertical load due to the at least one car 14 supported and to the passengers and/or goods transported by each car 14 supported by the bogie 16.
  • the bogie 16 is in the active configuration in particular during the operating phases of the railway vehicle 10 or if a load is applied to the bogie 16 as will be explained later.
  • the bogie 16 comprises a frame 20, at least one pair of wheels 22, at least one shaft 24, at least two wheel hubs 26 and at least two axle boxes 28.
  • the chassis 20 comprises at least one transverse beam 30 capable of supporting the load of the car 14.
  • Each transverse beam 30 connects two axle boxes 28 to form an axle
  • the frame 20 comprises at least two transverse beams 30 substantially parallel to each other.
  • Each pair of wheels 22 is rotatably mounted on the bogie 16 by one of the axles.
  • the wheels 22 are configured to run on the rails 12 and thus allow the movement of the railway vehicle 10.
  • Each shaft 24 connects the two wheels of one of the wheel pairs 22.
  • Each shaft 24 extends along a substantially transverse axle axis A-A'.
  • the bogie 16 comprises two shafts 24 each extending transversely, parallel to the transverse beams 30.
  • the bogie 16 includes a wheel hub 26 associated with each wheel 22.
  • Each wheel hub 26 is attached to the associated wheel 22 and shaft 24.
  • the associated shaft 24 is inserted into the wheel hub 26.
  • each shaft 24 is connected to the associated hub 26 by a splined connection 32.
  • each shaft 24 comprises at least one spline cooperating with at least one groove in the hub 26 allowing good coupling between the two parts and efficient transmission. of the torque from the motor of the railway vehicle to the wheels 22.
  • the bogie 16 includes an axle box 28 associated with each wheel 22.
  • Each axle box 28 is connected to the frame 20, by a primary suspension for example, not shown, and receives an associated hub 26.
  • Each axle box 28 extends along an axle box axis B-B'.
  • Each hub 26 is rotatably mounted inside the associated axle box 28, for example by means of bearings 34.
  • each wheel 22 is rotatable relative to the frame 20.
  • Each hub 26 extends along a hub axis B-B'.
  • Each hub 26 is hollow and forms a solid of revolution around the hub axis B-B' into which a section of the shaft 24 fits.
  • Each hub axle B-B' forms with the axle axle A-A' a camber angle a.
  • the bogie 16 is configured in such a way that when the bogie 16 is in the rest configuration (i.e. not loaded), the camber angle ⁇ is not zero. This is contrary to conventional bogie assembly methods.
  • the camber angle ⁇ when the bogie 16 is at rest is predetermined at least as a function of the stiffness of the axle, mainly of the transverse beam 30, and of the vertical load supported by the bogie 16 in the active configuration.
  • camber angle ⁇ is determined by means of a predicted average load.
  • axle axis A-A' and the hub axis B-B' are not aligned in the rest configuration.
  • Each beam 30 extends substantially straight.
  • the bogie 16 machining process includes an initial step of prestressing at least one of the beams 30 by applying a vertical prestressing load to the frame 20.
  • the prestressing load is for example applied by a machine exerting a vertical force towards the floor of the factory at the level of the center of the beam 30.
  • the prestressing load of the beam 30 is greater than an equivalent load of 5000 kg, in particular greater than an equivalent load of 8000 kg.
  • the beam 30 deforms and then has a concave shape, as shown in the figure 2 .
  • axle boxes The two axes of the axle boxes are then not aligned and form between them a non-zero angle.
  • the method includes a step of machining each axle box 28 so as to receive the associated hub 26, the prestressing load still being applied.
  • the machining of the axle box 28 is carried out so that the hub axis B-B' of said hub 26 is substantially parallel to the axle axis A-A' of the associated axle 24.
  • each axle box 28 is machined in such a way that the two hub axles B-B' are substantially coaxial.
  • the hubs 26 and the axle 24 are inserted into the axle boxes 28.
  • the two hubs 26 and the axle 24 are thus substantially coaxial.
  • the bogie 16 is then in the rest configuration.
  • the two hub axes B-B' then form a non-zero angle between them.
  • camber angle ⁇ between each hub axis B-B' and the axle axis A-A' is non-zero.
  • the railway vehicle 10 is assembled by placing in particular at least one car 14 resting on the bogie 16.
  • the car 14 when the car 14 includes passengers and/or goods, the car 14 exerts a vertical load on the bogie 16 similar to the prestressing load on the transverse beam 30.
  • camber angle ⁇ is then reduced, and for example approximately zero when the operating load is substantially equal to the prestressing load applied during manufacture.
  • the hubs 26 and the shaft 24 are thus aligned and thus premature wear of the bogie 16 due to friction is avoided.
  • the bogie 16 is initially in the rest configuration.
  • the machining process then comprises a step of machining each axle box 28 so as to receive the associated hub 26.
  • the machining is carried out so that the hub axis BB' of said hub 26 forms a non-zero camber angle ⁇ with the axle axis A-A', as shown in the picture 3 .
  • the two hub axes BB' are not parallel and form a non-zero angle between them.
  • the insertion of the shaft 24 takes place in each associated hub 26 despite the misalignment, and is possible for example due to a play present in the hub 26.
  • the railway vehicle 10 is assembled by placing in particular at least one car 14 resting on the bogie 16.
  • the car 14 when the car 14 includes passengers and/or goods, the car 14 exerts a vertical load on the bogie 16 which deforms the beam 30 and tends to realign the two hub axes B -B'.
  • the camber angle ⁇ in operation is small, and in particular approximately zero.
  • the hubs 26 and the axle 24 are thus aligned and thus premature wear of the bogie 16 due to friction is avoided.
  • the bogie 16 allows a lower risk of premature wear due to the alignment of the hubs 26 and the axle 24 in the active configuration of the bogie 16.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)
  • Turning (AREA)
  • Vehicle Body Suspensions (AREA)
  • Escalators And Moving Walkways (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un bogie (16) propre à passer d'une configuration de repos à un configuration active dans laquelle le bogie (16) supporte au moins une charge verticale, comprenant :
- un châssis (20),
- au moins une paire de roues (22),
- pour chaque paire de roues (22), un arbre (24) s'étendant selon un axe d'essieu,
- pour chaque roue (22), un moyeu de roue s'étendant selon un axe de moyeu et une boite d'essieu fixée au châssis (20) et recevant le moyeu associé, chaque moyeu étant mobile en rotation par rapport à la boite d'essieu associée.The invention relates to a bogie (16) capable of passing from a rest configuration to an active configuration in which the bogie (16) supports at least one vertical load, comprising:
- a frame (20),
- at least one pair of wheels (22),
- for each pair of wheels (22), a shaft (24) extending along an axle axis,
- for each wheel (22), a wheel hub extending along a hub axis and an axle box fixed to the frame (20) and receiving the associated hub, each hub being rotatable relative to the axle box associated axle.

Pour chaque moyeu, l'axe de moyeu forme un angle de carrossage non nul avec l'axe d'essieu de l'arbre (24) associé lorsque le bogie (16) est dans la configuration de repos.

Figure imgaf001
For each hub, the hub axle forms a non-zero camber angle with the axle axle of the associated shaft (24) when the bogie (16) is in the rest configuration.
Figure imgaf001

Description

La présente invention concerne un bogie de véhicule ferroviaire.The present invention relates to a railway vehicle bogie.

La présente invention concerne également un véhicule ferroviaire comprenant un tel bogie ferroviaire.The present invention also relates to a railway vehicle comprising such a railway bogie.

La présente invention concerne également un procédé d'usinage d'un tel bogie.The present invention also relates to a method of machining such a bogie.

Il est connu de disposer un bogie sous les voitures d'un véhicule ferroviaire afin de supporter lesdites voitures et pour les guider lors du déplacement du véhicule ferroviaire le long des rails.It is known to place a bogie under the cars of a railway vehicle in order to support said cars and to guide them when the railway vehicle moves along the rails.

De manière conventionnelle, un bogie comprend un châssis et des essieux, chaque essieu comprenant deux roues coaxiales montées mobiles en rotation sur le châssis.Conventionally, a bogie comprises a frame and axles, each axle comprising two coaxial wheels mounted to rotate on the frame.

Toutefois, le bogie présente un risque d'usure prématurée due à différents désalignements des pièces du bogie sous la charge de la voiture.However, the bogie presents a risk of premature wear due to various misalignments of the parts of the bogie under the load of the car.

Un des buts de l'invention est donc de proposer un bogie présentant moins de risque d'usure prématurée et ainsi allégeant les besoins de maintenance sur le bogie.One of the aims of the invention is therefore to propose a bogie presenting less risk of premature wear and thus alleviating the maintenance requirements on the bogie.

A cet effet, l'invention a pour objet un bogie de véhicule ferroviaire propre à passer d'une configuration de repos à un configuration active dans laquelle le bogie supporte au moins une charge verticale, comprenant un châssis ; au moins une paire de roues ; pour chaque paire de roues, un arbre reliant les deux roues de ladite paire de roues, chaque arbre s'étendant selon un axe d'essieu ; pour chaque roue, un moyeu de roue fixé à la roue et à l'arbre associé, le dit arbre étant inséré dans le moyeu, chaque moyeu s'étendant selon un axe de moyeu ; pour chaque roue, une boite d'essieu fixée au châssis et recevant le moyeu associé, chaque moyeu étant mobile en rotation par rapport à la boite d'essieu associée ; pour chaque moyeu, l'axe de moyeu forme un angle de carrossage non nul avec l'axe d'essieu de l'arbre associé lorsque le bogie est dans la configuration de repos.To this end, the subject of the invention is a railway vehicle bogie capable of passing from a rest configuration to an active configuration in which the bogie supports at least one vertical load, comprising a frame; at least one pair of wheels; for each pair of wheels, a shaft connecting the two wheels of said pair of wheels, each shaft extending along an axle axis; for each wheel, a wheel hub fixed to the wheel and to the associated shaft, said shaft being inserted into the hub, each hub extending along a hub axis; for each wheel, an axle box fixed to the frame and receiving the associated hub, each hub being rotatable relative to the associated axle box; for each hub, the hub axis forms a non-zero camber angle with the axle axis of the associated shaft when the bogie is in the rest configuration.

Suivant des modes particuliers de réalisation, le bogie comporte l'une ou plusieurs des caractéristiques optionnelles suivantes :

  • l'angle de carrossage lorsque le bogie est dans la configuration de repos est prédéterminé au moins en fonction de la raideur du châssis et de la charge verticale supportée par le bogie en configuration active ;
  • le châssis comprend, pour chaque arbre, au moins une poutre transverse reliant les deux boites d'essieu associées pour former l'essieu ; et
  • chaque arbre est relié à chaque moyeu associé par une liaison cannelée.
According to particular embodiments, the bogie comprises one or more of the following optional characteristics:
  • the camber angle when the bogie is in the rest configuration is predetermined at least as a function of the stiffness of the frame and the vertical load supported by the bogie in the active configuration;
  • the frame comprises, for each shaft, at least one transverse beam connecting the two associated axle boxes to form the axle; and
  • each shaft is connected to each associated hub by a splined connection.

L'invention concerne également un véhicule ferroviaire comprenant au moins un bogie tel que défini ci-dessus.The invention also relates to a railway vehicle comprising at least one bogie as defined above.

L'invention concerne également un procédé d'usinage d'un bogie tel que défini ci-dessus, le bogie étant initialement dans la configuration de repos, le procédé comprenant au moins les étapes suivantes :

  • précontrainte de la poutre transverse par application d'une charge verticale sur le châssis,
  • usinage de chaque boite d'essieu de sorte à recevoir le moyeu associé, l'usinage étant réalisé de sorte que l'axe de moyeu dudit moyeu soit sensiblement parallèle à l'axe d'essieu de l'arbre associé.
The invention also relates to a method for machining a bogie as defined above, the bogie being initially in the rest configuration, the method comprising at least the following steps:
  • prestressing of the transverse beam by application of a vertical load on the frame,
  • machining of each axle box so as to receive the associated hub, the machining being carried out so that the hub axis of said hub is substantially parallel to the axle axis of the associated shaft.

Suivant des modes particuliers de réalisation, le procédé d'usinage comporte l'une ou plusieurs des caractéristiques optionnelles suivantes :
la précontrainte de la poutre transverse est supérieure à une charge équivalente de 5000 kg, notamment supérieure à 8000 kgle bogie étant initialement dans la configuration de repos, le procédé comprenant au moins une étape d'usinage de chaque boite d'essieu de sorte à recevoir le moyeu associé, l'usinage étant réalisé de sorte que l'axe de moyeu dudit moyeu forme l'angle de carrossage non nul.According to particular embodiments, the machining method comprises one or more of the following optional characteristics:
the prestressing of the transverse beam is greater than an equivalent load of 5000 kg, in particular greater than 8000 kg, the bogie being initially in the rest configuration, the method comprising at least one step of machining each axle box so as to receive the associated hub, the machining being carried out so that the hub axle of said hub forms the non-zero camber angle.

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

  • [ Fig 1 ] - la figure 1 est une vue schématique en coupe d'un véhicule ferroviaire selon l'invention ;
  • [ Fig 2 ] - la figure 2 est une vue schématique en coupe d'un châssis selon un premier mode de réalisation d'un bogie du véhicule de la figure 1 ; et
  • [ Fig 3 ] - la figure 3 est une vue schématique en coupe d'un châssis selon un deuxième mode de réalisation du bogie de la figure 1.
Other characteristics and advantages of the invention will emerge from the detailed description which is given below, by way of indication and in no way limiting, with reference to the appended figures, among which:
  • [ Fig 1 ] - the figure 1 is a schematic sectional view of a railway vehicle according to the invention;
  • [ Fig 2 ] - the figure 2 is a schematic sectional view of a chassis according to a first embodiment of a bogie of the vehicle of the figure 1 ; and
  • [ Fig.3 ] - the picture 3 is a schematic sectional view of a chassis according to a second embodiment of the bogie of the figure 1 .

Les termes « vertical », « horizontal », « transversal » et « longitudinal » s'entendent de manière générale par rapport aux directions usuelles d'un véhicule ferroviaire circulant sur des rails horizontaux.The terms “vertical”, “horizontal”, “transverse” and “longitudinal” are generally understood with respect to the usual directions of a railway vehicle traveling on horizontal rails.

La figure 1 représente un véhicule ferroviaire 10 circulant sur des rails 12 s'étendant longitudinalement.The figure 1 represents a railway vehicle 10 traveling on rails 12 extending longitudinally.

Le véhicule ferroviaire 10 comprend au moins une voiture 14 et au moins un bogie 16.The railway vehicle 10 comprises at least one car 14 and at least one bogie 16.

Chaque voiture 14 présente un volume intérieur 18 configuré pour recevoir des passagers et/ou des marchandises à transporter.Each car 14 has an interior volume 18 configured to receive passengers and/or goods to be transported.

Le bogie 16 est disposé par exemple à une extrémité de la voiture 14 et supporte deux voitures 14 adjacentes lorsque le véhicule ferroviaire 10 comprend plusieurs voitures 14. Selon un mode de réalisation conventionnel, la ou chaque voiture 14 est supportée par deux bogies 16 à chacune de ses extrémités.The bogie 16 is arranged for example at one end of the car 14 and supports two adjacent cars 14 when the railway vehicle 10 comprises several cars 14. According to a conventional embodiment, the or each car 14 is supported by two bogies 16 at each from its ends.

Le bogie 16 est propre à passer d'une configuration de repos à un configuration active.The bogie 16 is capable of moving from a rest configuration to an active configuration.

Dans la configuration de repos, le bogie 16 est à l'écart des voitures 14 et ne supporte donc pas de charge verticale.In the rest configuration, the bogie 16 is away from the cars 14 and therefore does not support any vertical load.

En particulier, le bogie 16 se trouve dans la configuration de repos avant l'assemblage du véhicule ferroviaire 10 lors de sa fabrication.In particular, the bogie 16 is in the rest configuration before the assembly of the railway vehicle 10 during its manufacture.

Dans la configuration active, représentée sur la figure 1, le bogie 16 supporte une charge verticale due à l'au moins une voiture 14 supportée et aux passagers et/ou aux marchandises transportés par chaque voiture 14 supportée par le bogie 16.In the active configuration, shown in the figure 1 , the bogie 16 supports a vertical load due to the at least one car 14 supported and to the passengers and/or goods transported by each car 14 supported by the bogie 16.

Ainsi, le bogie 16 est dans la configuration active notamment lors des phases d'exploitation du véhicule ferroviaire 10 ou si une charge est appliquée sur le bogie 16 comme cela sera expliqué par la suite.Thus, the bogie 16 is in the active configuration in particular during the operating phases of the railway vehicle 10 or if a load is applied to the bogie 16 as will be explained later.

Le bogie 16 comprend un châssis 20, au moins une paire de roues 22, au moins un arbre 24, au moins deux moyeux de roue 26 et au moins deux boites d'essieu 28.The bogie 16 comprises a frame 20, at least one pair of wheels 22, at least one shaft 24, at least two wheel hubs 26 and at least two axle boxes 28.

Le châssis 20 comprend, au moins une poutre transverse 30 propre à supporter la charge de la voiture 14.The chassis 20 comprises at least one transverse beam 30 capable of supporting the load of the car 14.

Chaque poutre transverse 30 relie deux boites d'essieu 28 pour former un essieuEach transverse beam 30 connects two axle boxes 28 to form an axle

Avantageusement, le châssis 20 comprend au moins deux poutres transverses 30 sensiblement parallèles l'une à l'autre.Advantageously, the frame 20 comprises at least two transverse beams 30 substantially parallel to each other.

Chaque paire de roues 22 est montée mobile en rotation sur le bogie 16 par l'un des essieux.Each pair of wheels 22 is rotatably mounted on the bogie 16 by one of the axles.

Les roues 22 sont configurées pour rouler sur les rails 12 et ainsi permettre le déplacement du véhicule ferroviaire 10.The wheels 22 are configured to run on the rails 12 and thus allow the movement of the railway vehicle 10.

Chaque arbre 24 relie les deux roues de l'une des paires de roues 22.Each shaft 24 connects the two wheels of one of the wheel pairs 22.

Chaque arbre 24 s'étend selon un axe d'essieu A-A' sensiblement transversal.Each shaft 24 extends along a substantially transverse axle axis A-A'.

Avantageusement, le bogie 16 comprend deux arbres 24 s'étendant chacun transversalement, parallèlement aux poutres transverses 30.Advantageously, the bogie 16 comprises two shafts 24 each extending transversely, parallel to the transverse beams 30.

Le bogie 16 comprend un moyeu de roue 26 associé à chaque roue 22.The bogie 16 includes a wheel hub 26 associated with each wheel 22.

Chaque moyeu de roue 26 est fixé à la roue 22 et à l'arbre 24 associés.Each wheel hub 26 is attached to the associated wheel 22 and shaft 24.

L'arbre 24 associé est inséré dans le moyeu de roue 26.The associated shaft 24 is inserted into the wheel hub 26.

Avantageusement, chaque arbre 24 est relié au moyeu 26 associé par une liaison cannelée 32. En particulier, chaque arbre 24 comprend au moins une cannelure coopérant avec au moins une rainure dans le moyeu 26 permettant un bon accouplement entre les deux pièces et une transmission efficace du couple du moteur du véhicule ferroviaire vers les roues 22.Advantageously, each shaft 24 is connected to the associated hub 26 by a splined connection 32. In particular, each shaft 24 comprises at least one spline cooperating with at least one groove in the hub 26 allowing good coupling between the two parts and efficient transmission. of the torque from the motor of the railway vehicle to the wheels 22.

Le bogie 16 comprend une boite d'essieu 28 associée à chaque roue 22.The bogie 16 includes an axle box 28 associated with each wheel 22.

Chaque boite d'essieu 28 est reliée au châssis 20, par une suspension primaire par exemple, non représentée, et reçoit un moyeu 26 associé.Each axle box 28 is connected to the frame 20, by a primary suspension for example, not shown, and receives an associated hub 26.

Chaque boite d'essieu 28 s'étend selon un axe de boite d'essieu B-B'.Each axle box 28 extends along an axle box axis B-B'.

Chaque moyeu 26 est monté mobile en rotation à l'intérieur de la boite d'essieu 28 associée, par exemple au moyen de roulements 34. Ainsi, chaque roue 22 est mobile en rotation par rapport au châssis 20.Each hub 26 is rotatably mounted inside the associated axle box 28, for example by means of bearings 34. Thus, each wheel 22 is rotatable relative to the frame 20.

Chaque moyeu 26 s'étend selon un axe de moyeu B-B'.Each hub 26 extends along a hub axis B-B'.

Chaque moyeu 26 est creux et forme un solide de révolution autour de l'axe de moyeu B-B' dans lequel un tronçon de l'arbre 24 s'insère.Each hub 26 is hollow and forms a solid of revolution around the hub axis B-B' into which a section of the shaft 24 fits.

Chaque axe de moyeu B-B' forme avec l'axe d'essieu A-A' un angle de carrossage a.Each hub axle B-B' forms with the axle axle A-A' a camber angle a.

Le bogie 16 est configuré de telle manière que lorsque le bogie 16 est dans la configuration de repos (i.e. non chargé), l'angle de carrossage α est non nul. Ceci est contraire aux méthodes d'assemblages de bogie conventionnelles.The bogie 16 is configured in such a way that when the bogie 16 is in the rest configuration (i.e. not loaded), the camber angle α is not zero. This is contrary to conventional bogie assembly methods.

L'angle de carrossage α lorsque le bogie 16 est au repos est prédéterminé au moins en fonction de la raideur de l'essieu, principalement de la poutre transverse 30, et de la charge verticale supportée par le bogie 16 en configuration active.The camber angle α when the bogie 16 is at rest is predetermined at least as a function of the stiffness of the axle, mainly of the transverse beam 30, and of the vertical load supported by the bogie 16 in the active configuration.

Cette charge étant variable, l'angle de carrossage α est déterminé au moyen d'une charge moyenne prédite.This load being variable, the camber angle α is determined by means of a predicted average load.

Ainsi, l'axe d'essieu A-A' et l'axe de moyeu B-B' ne sont pas alignés dans la configuration de repos.Thus, the axle axis A-A' and the hub axis B-B' are not aligned in the rest configuration.

Un procédé d'usinage d'un bogie 16 selon un premier mode de réalisation va maintenant être décrit.A method of machining a bogie 16 according to a first embodiment will now be described.

Initialement, les différentes pièces du bogie 16 sont séparées les unes des autres.Initially, the different parts of the bogie 16 are separated from each other.

Chaque poutre 30 s'étend sensiblement rectilignement.Each beam 30 extends substantially straight.

Le procédé d'usinage du bogie 16 comprend une étape initiale de précontrainte d'au moins l'une des poutres 30 par application d'une charge de précontrainte verticale sur le châssis 20.The bogie 16 machining process includes an initial step of prestressing at least one of the beams 30 by applying a vertical prestressing load to the frame 20.

La charge de précontrainte est par exemple appliquée par une machine exerçant une force verticale vers le sol de l'usine au niveau du centre de la poutre 30.The prestressing load is for example applied by a machine exerting a vertical force towards the floor of the factory at the level of the center of the beam 30.

En particulier, la charge de précontrainte de la poutre 30 est supérieure à une charge équivalente de 5000 kg, notamment supérieure à une charge équivalente de 8000 kg.In particular, the prestressing load of the beam 30 is greater than an equivalent load of 5000 kg, in particular greater than an equivalent load of 8000 kg.

La poutre 30 se déforme et présente alors une forme concave, comme représenté sur la figure 2.The beam 30 deforms and then has a concave shape, as shown in the figure 2 .

Les deux axes de boites d'essieu ne sont alors pas alignés et forment entre eux un angle non nul.The two axes of the axle boxes are then not aligned and form between them a non-zero angle.

Puis, le procédé comprend une étape d'usinage de chaque boite d'essieu 28 de sorte à recevoir le moyeu 26 associé, la charge de précontrainte étant encore appliquée.Then, the method includes a step of machining each axle box 28 so as to receive the associated hub 26, the prestressing load still being applied.

L'usinage de la boite d'essieu 28 est réalisé de sorte que l'axe de moyeu B-B' dudit moyeu 26 soit sensiblement parallèle à l'axe d'essieu A-A' de l'essieu 24 associé.The machining of the axle box 28 is carried out so that the hub axis B-B' of said hub 26 is substantially parallel to the axle axis A-A' of the associated axle 24.

En particulier, l'usinage de chaque boite d'essieu 28 est réalisé de telle sorte que les deux axes de moyeu B-B' soient sensiblement coaxiaux.In particular, each axle box 28 is machined in such a way that the two hub axles B-B' are substantially coaxial.

Puis, toujours en appliquant la charge de précontrainte, les moyeux 26 et l'essieu 24 sont insérés dans les boites d'essieu 28. Les deux moyeux 26 et l'essieu 24 sont ainsi sensiblement coaxiaux.Then, still applying the prestressing load, the hubs 26 and the axle 24 are inserted into the axle boxes 28. The two hubs 26 and the axle 24 are thus substantially coaxial.

Puis, la charge de précontrainte est relâchée et la déformation de la poutre 30 diminue.Then, the prestressing load is released and the deformation of the beam 30 decreases.

Le bogie 16 se trouve alors dans la configuration de repos.The bogie 16 is then in the rest configuration.

Les deux axes de moyeu B-B' forment alors un angle non nul entre eux.The two hub axes B-B' then form a non-zero angle between them.

En particulier, l'angle de carrossage α entre chaque axe de moyeu B-B' et l'axe d'essieu A-A' est non nul.In particular, the camber angle α between each hub axis B-B' and the axle axis A-A' is non-zero.

Puis, le véhicule ferroviaire 10 est assemblé en plaçant notamment au moins une voiture 14 en appui sur le bogie 16.Then, the railway vehicle 10 is assembled by placing in particular at least one car 14 resting on the bogie 16.

Lors de l'exploitation du véhicule ferroviaire 10, lorsque la voiture 14 comprend des passagers et/ou des marchandises, la voiture 14 exerce une charge verticale sur le bogie 16 semblable à la charge de précontrainte sur la poutre transverse 30.During the operation of the railway vehicle 10, when the car 14 includes passengers and/or goods, the car 14 exerts a vertical load on the bogie 16 similar to the prestressing load on the transverse beam 30.

L'angle de carrossage α est alors réduit, et par exemple approximativement nul lorsque la charge en fonctionnement est sensiblement égale à la charge de précontrainte appliquée pendant la fabrication.The camber angle α is then reduced, and for example approximately zero when the operating load is substantially equal to the prestressing load applied during manufacture.

Les moyeux 26 et l'arbre 24 sont ainsi alignés et ainsi l'usure prématurée du bogie 16 due aux frottements est évitée.The hubs 26 and the shaft 24 are thus aligned and thus premature wear of the bogie 16 due to friction is avoided.

Un procédé d'usinage d'un bogie 16 selon un deuxième mode de réalisation va maintenant être décrit.A method of machining a bogie 16 according to a second embodiment will now be described.

Initialement, les différentes pièces du bogie 16 sont séparées les unes des autres.Initially, the different parts of the bogie 16 are separated from each other.

Le bogie 16 est initialement dans la configuration de repos.The bogie 16 is initially in the rest configuration.

Contrairement au premier mode de réalisation, aucune charge de précontrainte n'est appliquée sur les poutres 30.Unlike the first embodiment, no prestressing load is applied to the beams 30.

Le procédé d'usinage comprend alors une étape d'usinage de chaque boite d'essieu 28 de sorte à recevoir le moyeu 26 associé.The machining process then comprises a step of machining each axle box 28 so as to receive the associated hub 26.

L'usinage est réalisé de sorte que l'axe de moyeu B-B' dudit moyeu 26 forme un angle de carrossage α non nul avec l'axe d'essieu A-A', comme représenté sur la figure 3.The machining is carried out so that the hub axis BB' of said hub 26 forms a non-zero camber angle α with the axle axis A-A', as shown in the picture 3 .

Comme visible sur la figure 3, les deux axes de moyeu B-B' ne sont pas parallèles et forment entre eux un angle non nul.As seen on the picture 3 , the two hub axes BB' are not parallel and form a non-zero angle between them.

Puis, les moyeux 26 et l'arbre 24 sont insérés dans les boites d'essieu 28.Then, the hubs 26 and the shaft 24 are inserted into the axle boxes 28.

L'insertion de l'arbre 24 s'effectue dans chaque moyeu 26 associé malgré le désalignement, et est possible par exemple du fait d'un jeu présent dans le moyeu 26.The insertion of the shaft 24 takes place in each associated hub 26 despite the misalignment, and is possible for example due to a play present in the hub 26.

Puis, le véhicule ferroviaire 10 est assemblé en plaçant notamment au moins une voiture 14 en appui sur le bogie 16.Then, the railway vehicle 10 is assembled by placing in particular at least one car 14 resting on the bogie 16.

Lors de l'exploitation du véhicule ferroviaire 10, lorsque la voiture 14 comprend des passagers et/ou des marchandises, la voiture 14 exerce une charge verticale sur le bogie 16 qui déforme la poutre 30 et a tendance à réaligner les deux axes de moyeu B-B'.During the operation of the railway vehicle 10, when the car 14 includes passengers and/or goods, the car 14 exerts a vertical load on the bogie 16 which deforms the beam 30 and tends to realign the two hub axes B -B'.

L'angle de carrossage α en fonctionnement est faible, et en particulier approximativement nul.The camber angle α in operation is small, and in particular approximately zero.

Les moyeux 26 et l'essieu 24 sont ainsi alignés et ainsi l'usure prématuré du bogie 16 due aux frottements est évitée.The hubs 26 and the axle 24 are thus aligned and thus premature wear of the bogie 16 due to friction is avoided.

On conçoit alors que la présente invention présente un certain nombre d'avantages.It can then be seen that the present invention has a certain number of advantages.

En effet, comme expliqué ci-dessus, le bogie 16 selon l'invention permet un risque d'usure prématurée moindre du fait de l'alignement des moyeux 26 et de l'essieu 24 en configuration active du bogie 16.Indeed, as explained above, the bogie 16 according to the invention allows a lower risk of premature wear due to the alignment of the hubs 26 and the axle 24 in the active configuration of the bogie 16.

Les besoins de maintenance sur le bogie 16 sont donc réduits et la durée de vie du bogie 16 est allongée.Maintenance requirements on the bogie 16 are therefore reduced and the service life of the bogie 16 is extended.

Enfin, les deux modes de réalisation des procédés d'usinage selon l'invention du bogie 16 sont mis en œuvre facilement lors de l'assemblage du véhicule ferroviaire 10 sans rallonger le temps de fabrication.Finally, the two embodiments of the machining methods according to the invention of the bogie 16 are easily implemented during the assembly of the railway vehicle 10 without extending the manufacturing time.

Claims (9)

Bogie (16) de véhicule ferroviaire (10) propre à passer d'une configuration de repos à un configuration active dans laquelle le bogie (16) supporte au moins une charge verticale, le bogie (16) comprenant : - un châssis (20), - au moins une paire de roues (22), - pour chaque paire de roues (22), un arbre (24) reliant les deux roues (22) de ladite paire de roues (22), chaque arbre (24) s'étendant selon un axe d'essieu (A-A'), - pour chaque roue (22), un moyeu de roue (26) fixé à la roue (22) et à l'arbre (24) associé, le dit arbre (24) étant inséré dans le moyeu (26), chaque moyeu (26) s'étendant selon un axe de moyeu (B-B'), - pour chaque roue (22), une boite d'essieu (28) fixée au châssis (20) et recevant le moyeu (26) associé, chaque moyeu (26) étant mobile en rotation par rapport à la boite d'essieu (28) associée, caractérisé en ce que, pour chaque moyeu (26), l'axe de moyeu (B-B') forme un angle de carrossage (a) non nul avec l'axe d'essieu (A-A') de l'arbre (24) associé lorsque le bogie (16) est dans la configuration de repos.Bogie (16) of a railway vehicle (10) capable of passing from a rest configuration to an active configuration in which the bogie (16) supports at least one vertical load, the bogie (16) comprising: - a frame (20), - at least one pair of wheels (22), - for each pair of wheels (22), a shaft (24) connecting the two wheels (22) of said pair of wheels (22), each shaft (24) extending along an axle axis (A-A' ), - for each wheel (22), a wheel hub (26) fixed to the wheel (22) and to the associated shaft (24), said shaft (24) being inserted into the hub (26), each hub ( 26) extending along a hub axis (B-B'), - for each wheel (22), an axle box (28) fixed to the frame (20) and receiving the associated hub (26), each hub (26) being rotatable relative to the axle box (28 ) associated, characterized in that , for each hub (26), the hub axis (B-B') forms a non-zero camber angle (a) with the axle axis (A-A') of the shaft (24) associated when the bogie (16) is in the rest configuration. Bogie (16) selon la revendication 1, dans lequel l'angle de carrossage (a) lorsque le bogie (16) est dans la configuration de repos est prédéterminé au moins en fonction de la raideur du châssis (20) et de la charge verticale supportée par le bogie (16) en configuration active.Bogie (16) according to claim 1, wherein the camber angle (a) when the bogie (16) is in the rest configuration is predetermined at least as a function of the stiffness of the frame (20) and the vertical load supported by the bogie (16) in active configuration. Bogie (16) selon l'une quelconque des revendications précédentes, dans lequel le châssis (20) comprend, pour chaque arbre (24), au moins une poutre transverse (30) reliant les deux boites d'essieu (28) associés audit essieu (24).Bogie (16) according to any one of the preceding claims, in which the frame (20) comprises, for each shaft (24), at least one transverse beam (30) connecting the two axle boxes (28) associated with said axle (24). Bogie (16) selon l'une quelconque des revendications précédentes, dans lequel chaque arbre (24) est relié à chaque moyeu (26) associé par une liaison cannelée (32).A bogie (16) according to any preceding claim, wherein each shaft (24) is connected to each associated hub (26) by a splined connection (32). Véhicule ferroviaire (10) comprenant au moins un bogie (16) selon l'une quelconque des revendications précédentes.Railway vehicle (10) comprising at least one bogie (16) according to any one of the preceding claims. Véhicule ferroviaire (10) selon la revendication 5, comprenant en outre au moins une voiture (14) supportée par le bogie (16), le bogie (16) étant configuré pour supporter une charge verticale due à l'au moins une voiture (14) et à des passagers et/ou des marchandises transportés par ladite voiture (14).A rail vehicle (10) according to claim 5, further comprising at least one car (14) supported by the bogie (16), the bogie (16) being configured to support a vertical load due to the at least one car (14 ) and to passengers and/or goods transported by said car (14). Procédé d'usinage d'un bogie (16) selon la revendication 3, le bogie (16) étant initialement dans la configuration de repos, le procédé comprenant au moins les étapes suivantes : - précontrainte de la poutre transverse (30) par application d'une charge verticale sur le châssis (20), - usinage de chaque boite d'essieu (28) de sorte à recevoir le moyeu (26) associé, l'usinage étant réalisé de sorte que l'axe de moyeu (B-B') dudit moyeu (26) soit sensiblement parallèle à l'axe d'essieu (A-A') de l'arbre (24) associé. Method of machining a bogie (16) according to claim 3, the bogie (16) being initially in the rest configuration, the method comprising at least the following steps: - prestressing of the transverse beam (30) by application of a vertical load on the frame (20), - machining of each axle box (28) so as to receive the associated hub (26), the machining being carried out so that the hub axis (B-B') of said hub (26) is substantially parallel to the axle axis (A-A') of the associated shaft (24). Procédé d'usinage selon la revendication 7, dans lequel la précontrainte de la poutre transverse (30) est supérieure à une charge équivalente de 5000 kg, notamment supérieure à 8000 kg.Machining method according to Claim 7, in which the prestressing of the transverse beam (30) is greater than an equivalent load of 5000 kg, in particular greater than 8000 kg. Procédé d'usinage d'un bogie (16) selon l'une quelconque des revendications 1 à 4, le bogie (16) étant initialement dans la configuration de repos, le procédé comprenant au moins une étape d'usinage de chaque boite d'essieu (28) de sorte à recevoir le moyeu (26) associé, l'usinage étant réalisé de sorte que l'axe de moyeu (B-B') dudit moyeu (26) forme l'angle de carrossage (a) non nul.Method of machining a bogie (16) according to any one of claims 1 to 4, the bogie (16) being initially in the rest configuration, the method comprising at least one step of machining each gearbox axle (28) so as to receive the associated hub (26), the machining being carried out so that the hub axis (B-B') of said hub (26) forms the non-zero camber angle (a) .
EP21207473.6A 2020-11-13 2021-11-10 Railway vehicle bogie, associated railway vehicle and machining method Active EP4001048B1 (en)

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US20070169663A1 (en) * 2006-01-20 2007-07-26 Asf-Keystone, Inc. Sideframe pedestal
EP2258596A1 (en) * 2009-06-05 2010-12-08 ALSTOM Transport SA Driven bogie of a railway vehicle
EP3222483A1 (en) * 2016-03-25 2017-09-27 ALSTOM Transport Technologies Bogie with outer motor and associated rail vehicle
FR3049252A1 (en) * 2016-03-25 2017-09-29 Alstom Transp Tech BOGIE COMPRISING A RIGID CONNECTION BETWEEN THE AXLE BOXES AND THE RAIL VEHICLE ASSOCIATED THEREWITH
EP3650304A1 (en) * 2018-11-06 2020-05-13 ALSTOM Transport Technologies Bogie for rail vehicle

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EP4001048B1 (en) 2022-11-16
US20220153321A1 (en) 2022-05-19
FR3116255B1 (en) 2022-11-18

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