EP1436186B1 - Bogie with axles easily assembled and disassembled - Google Patents

Bogie with axles easily assembled and disassembled Download PDF

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Publication number
EP1436186B1
EP1436186B1 EP02772685A EP02772685A EP1436186B1 EP 1436186 B1 EP1436186 B1 EP 1436186B1 EP 02772685 A EP02772685 A EP 02772685A EP 02772685 A EP02772685 A EP 02772685A EP 1436186 B1 EP1436186 B1 EP 1436186B1
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EP
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Prior art keywords
axle
bogie
axles
fixed
dismounting
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EP02772685A
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German (de)
French (fr)
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EP1436186A1 (en
EP1436186B2 (en
Inventor
Italico Biscaro
Daniel Pouyt
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Alstom Transportation Germany GmbH
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Bombardier Transportation GmbH
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    • 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

Definitions

  • the present invention relates to a bogie intended to be mounted on a rail vehicle and having a chassis and at least two axles mounted via axle boxes and suspension elements on the chassis.
  • Bogies of this type are well known and widely used in the context of urban and rail transport. They can only be carrying or motorized. However, during maintenance work, such as the reprofiling of the wheels and / or the change of wheel tires, the disassembly time of the axles is considerable because it is necessary to disassemble all or part of the primary suspensions and drive units, or even dismantle the bogie from the vehicle body.
  • the present invention aims to remedy these drawbacks and is characterized for this purpose by the fact that the bogie comprises disassembly means-mounting axles in a radial direction without disassembly of the suspension elements, these disassembly-mounting means having axle boxes in at least two parts, at least a portion of which can be spaced apart to open a radial axle passage.
  • An advantageous variant of the bogie comprises a motor unit attached to the chassis connected to at least one of the axles via a transmission and coupling device and is characterized in that said disassembly-mounting means comprise means to at least partially separate the transmission and coupling device from the next axle an axial direction, the whole being arranged so that said axle can be removed without disassembly of the drive unit and the transmission and coupling device.
  • the axle box comprises an upper part secured to the suspension elements and the chassis and a removable lower part shaped to allow a radial passage of the axle after disassembly of the lower part, said upper part having a shape general Omega with two side plates in extension on which the suspension elements are in support.
  • axles are provided with rolling bearings fixed at their periphery and interposed between the axles and the axle boxes, said lower part being shaped so as to leave a radial passage for the axle. rolling bearing after disassembly of the lower part, and so that the axles and rolling bearings integral with the latter can be removed from said upper part.
  • Rolling bearings are not exposed during disassembly and remain fully protected even when the axle box is open.
  • said upper part comprises two side walls between which the lower part fits during their assembly, the two side plates on which the suspension elements are fixed being arranged on the outer side of the two side walls.
  • a preferred embodiment is characterized in that the transmission and coupling device comprises a first front gear intended to cooperate with a second front gear of the axle and at least one elastic element allowing axial displacement of the first gear. front axle so that the axle can be removed from the bogie when said lower portion is removed from the axle box.
  • the transmission and coupling device comprises a gear intended to cooperate with the motorization unit and fixed to an outer plate provided with elastomer elements and fixed to a hollow tube which is fixed to an inner plate provided with elements. elastomer and secured to a disc provided with said front gear, the latter being intended to be fixed to the axle by at least one screw accessible from the outside by the hollow tube.
  • the transmission and coupling device has a particularly solid construction, while allowing a quick removal and reassembly precise and uncomplicated.
  • the bogie execution mode illustrated in figure 1 is of the carrier and motor type particularly intended for low floor trams, but also likely to be used in the context of any rail vehicle.
  • This frame comprises a chassis 10 and two rotating axles 12, one of which is disassembled at the figure 1 and each bearing two wheels 14.
  • This frame has four longitudinal arms 15 each supported by two primary suspensions 16 on axle boxes 17 supported by the rotating axles 12.
  • the frame 10 has a middle portion 18 lowered and therefore a generally U-shaped cross section in which can be accommodated the middle portion of a vehicle body on which the bogie is mounted to obtain a full low floor vehicle.
  • the body of the vehicle not shown is supported by the bogie with secondary suspensions 19, for example in the form of four coil springs.
  • a power unit 20 is fixed to the chassis and comprises a motor 21 and a gearbox 22 connected by a transmission and elastic coupling member 23 to one of the two axles 12.
  • the bogie further comprises two disc brakes 24 with stirrups 25 fixed to the frame 10 and cooperating with disks (not shown) integral with the axles 12 and arranged thereon at the opposite end of the member 23.
  • the Figures 2a and 2b illustrate the end 30 of the axles 12 in two positions, in the mounted position on the axle box 17 ( Fig. 2a ) and during disassembly-assembly ( Fig. 2b ).
  • the wheel 14 is of the acoustic type with an elastic member 31.
  • a rolling bearing 32 serves as an interface between the axle box 17 and the axis 33 of the axle. It comprises a bearing housing 34 in two parts, fixed on one side by means of a screw 35 to the axis and having on the other side a sealing labyrinth 36.
  • the transmission and elastic coupling member 23 is partially disposed in the housing 37 of the gearbox and comprises a ring gear 38 meshing with the gearbox 22.
  • This ring is screwed to an outer plate 39 having on its periphery elastomer blocks 40 integral with the steel spokes 41.
  • the latter are in turn screwed to a hollow tube 42 which is integral with an inner plate 43 having steel spokes 44 integral with elastomer blocks 45 fixed to a disk 46.
  • This is equipped with a front gear 47 cooperating in the mounted position ( Fig. 2a ) with a front gear 48 of the axis 33.
  • a central bolt 50 which is accessible from the outside by a central channel 51 makes it possible to fix and dismount the member 23 with respect to the axis 33.
  • the disc 46 is provided with seals 52 to prevent the introduction of impurities to the rolling bearing 32.
  • the central channel 51 is closed by a removable cover 53 to the outside.
  • distance 53 is of the order of 3 to 20 mm, advantageously 12 mm, as illustrated in FIG. figure 2b .
  • axle box 17 is formed by two parts.
  • An upper portion 60 is constituted by a piece of cast iron of general Omega shape having two side plates 61 in extension with bores 62 for fixing the primary suspensions 16 on both sides of the axle.
  • This upper part will remain during disassembly of the fixed axle of the frame 10 of the bogie and further comprises a semicircular housing 63 in which the housing 34 of the rolling bearing 32 is applied.
  • the lower part 64 fits between two side walls 65 of the upper part 60 and is fixed to the latter by four assembly screws 66. assembled position, two side walls 67 are in contact with the side walls 65 of the upper part so as to form a homogeneous assembly of high radial strength.
  • the lower portion 64 is of course also provided with a second semicircular housing 68 forming a continuity with the other housing 63 of the upper part.
  • the bogie according to the invention comprises disassembly-mounting means 70 of the axle 12 for quick and easy disassembly of an axle without the need to disassemble the primary suspension 16 and all or part of the groups
  • the means 70 comprise, on the one hand axle boxes 17 in two parts for moving the axle downwards and, on the other hand, transmission and elastic coupling members 23 of the invention. a particular type arranged so as to release a gear 47 secured to the transmission and coupling members 23 of a gear 48 integral with the axle 12 by axial displacement of the gear 47.
  • the central bolt 50 can be unscrewed and removed. Due to the elasticity of the elastomer blocks 40, 45, the disc 46 can be pulled out manually or by means of a distance instrument 53 and the axle 12 can then be moved radially downward when the lower parts 64 of the axle boxes are removed, the gears 47 and 48 being completely separated from each other. At the other end of the axle, the brake disc also easily disengages from the disc brake caliper. The disassembly of the axle can therefore be performed without any difficulty, without multiple ancillary works, and without disassembly work both at the level of the motorization group than that of the primary suspensions.
  • the bogie may be of the non-motorized carrier type.
  • the concept of two-axle axle boxes then also allows the rapid disassembly / assembly of the axles, without the need for an axially displaced transmission and coupling member.
  • the axle box may also have a different shape and construction; it could for example have more than two parts, a first portion of the axle box may be articulated to a second fixed portion so as to be spaced so as to open a radial passage of the axle.
  • the displacement of the axle during disassembly may be vertical or oblique.
  • the gearing between the power units and the axles could be of any other type.
  • the organ of transmission and elastic coupling could have a completely different construction, but still allowing easy release of the axle without disassembly of the engine group.
  • the truck could have a different number of axles and could be used in other rail vehicles than trams.
  • the axles may also be of the non-rotating type.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The invention concerns a bogie comprising a chassis (10) and axles (12) mounted via axle boxes (17) and primary suspensions (16) on the chassis (10). Two motoring units (20) are fixed to the chassis and linked via elastic coupling and transmission devices (23) to the axles (12). Assembling and disassembling means (70) comprise axle boxes (17) in two parts (60, 64) whereof the lower part can be disassembled and elastic coupling and transmission devices (23) whereof the part in contact with the axle can be spaced apart therefrom by elastic axial displacement. Thus, the axles can very rapidly and easily assembled, without having to disassemble all or part of the primary suspensions (16) and the motoring units (20). Wheel tread machining and wheel tyre changing as well as maintenance operations on the axles can be carried out in a very short time.

Description

La présente invention a pour objet un bogie destiné à être monté sur un véhicule sur rail et comportant un châssis et au moins deux essieux montés par l'intermédiaire de boîtes d'essieu et d'éléments de suspension sur le châssis.The present invention relates to a bogie intended to be mounted on a rail vehicle and having a chassis and at least two axles mounted via axle boxes and suspension elements on the chassis.

Des bogies de ce type sont bien connus et largement utilisés dans le cadre du transport urbain et ferroviaire. Ils peuvent être uniquement porteurs ou motorisés. Cependant lors des travaux de maintien, tels que le reprofilage des roues et/ou le changement des bandages des roues, le temps de démontage-montage des essieux est considérable du fait qu'il est nécessaire de démonter tout ou partie des suspensions primaires et des groupes de motorisation, voire de démonter le bogie de la caisse du véhicule.Bogies of this type are well known and widely used in the context of urban and rail transport. They can only be carrying or motorized. However, during maintenance work, such as the reprofiling of the wheels and / or the change of wheel tires, the disassembly time of the axles is considerable because it is necessary to disassemble all or part of the primary suspensions and drive units, or even dismantle the bogie from the vehicle body.

La présente invention a pour but de remédier à ces inconvénients et elle est caractérisée à cet effet par le fait que le bogie comprend des moyens de démontage-montage des essieux suivant une direction radiale sans démontage des éléments de suspension, ces moyens de démontage-montage comportant des boîtes d'essieu en au moins deux parties dont au moins une partie peut être écartée pour ouvrir un passage radial à l'essieu.The present invention aims to remedy these drawbacks and is characterized for this purpose by the fact that the bogie comprises disassembly means-mounting axles in a radial direction without disassembly of the suspension elements, these disassembly-mounting means having axle boxes in at least two parts, at least a portion of which can be spaced apart to open a radial axle passage.

Il est aussi possible de déposer les essieux très facilement et rapidement. Le reprofilage des roues, le changement des bandages des roues et d'autres travaux d'entretien des essieux peuvent donc être effectués dans un temps considérablement raccourci, sans qu'il soit nécessaire de démonter le bogie de la caisse du véhicule et/ou de démonter tout ou partie des suspensions primaires et des groupes de motorisation.It is also possible to remove the axles very easily and quickly. The reprofiling of the wheels, the change of wheel tires and other axle maintenance work can therefore be performed in a considerably shortened time, without the need to disassemble the bogie of the vehicle body and / or dismantle all or part of the primary suspensions and groups of engines.

Une variante avantageuse de bogie comporte un groupe de motorisation fixé au châssis relié à au moins un des essieux par l'intermédiaire d'un dispositif de transmission et d'accouplement et est caractérisée par le fait que lesdits moyens de démontage-montage comportent des moyens pour écarter au moins partiellement le dispositif de transmission et d'accouplement de l'essieu suivant une direction axiale, le tout étant agencé de façon que ledit essieu puisse être enlevé sans démontage du groupe de motorisation et du dispositif de transmission et d'accouplement.An advantageous variant of the bogie comprises a motor unit attached to the chassis connected to at least one of the axles via a transmission and coupling device and is characterized in that said disassembly-mounting means comprise means to at least partially separate the transmission and coupling device from the next axle an axial direction, the whole being arranged so that said axle can be removed without disassembly of the drive unit and the transmission and coupling device.

Ces caractéristiques assurent une dépose rapide et facile des essieux, même pour les bogies moteurs sans toucher aux éléments du réducteur ou du moteur. De même, ces caractéristiques permettent également une dépose rapide du groupe de motorisation sans qu'il soit nécessaire de démonter les essieux.These features ensure quick and easy removal of axles, even for motor bogies without touching gearbox or motor components. Similarly, these features also allow rapid removal of the motor unit without the need to disassemble the axles.

Favorablement, la boîte d'essieu comprend une partie supérieure solidaire des éléments de suspension et du châssis et une partie inférieure amovible conformées de façon à permettre un passage radial de l'essieu après le démontage de la partie inférieure, ladite partie supérieure présentant une forme générale en Oméga avec deux plateaux latéraux en prolongement sur lesquels les éléments de suspension sont en appui.Favorably, the axle box comprises an upper part secured to the suspension elements and the chassis and a removable lower part shaped to allow a radial passage of the axle after disassembly of the lower part, said upper part having a shape general Omega with two side plates in extension on which the suspension elements are in support.

Grâce à ces caractéristiques, on obtient une construction particulièrement simple et peu onéreuse, tout en bénéficiant d'une grande solidité et d'un démontage rapide.Thanks to these features, we obtain a particularly simple and inexpensive construction, while enjoying great strength and rapid disassembly.

Un mode d'exécution avantageux est caractérisé par le fait que les essieux sont munis de paliers à roulement fixés à leur périphérie et interposés entre les essieux et les boîtes d'essieu, ladite partie inférieure étant conformée de façon à laisser un passage radial pour le palier à roulements après le démontage de la partie inférieure, et de façon que les essieux et les paliers à roulements solidaires de ces derniers puissent être ôtés de ladite partie supérieure.An advantageous embodiment is characterized in that the axles are provided with rolling bearings fixed at their periphery and interposed between the axles and the axle boxes, said lower part being shaped so as to leave a radial passage for the axle. rolling bearing after disassembly of the lower part, and so that the axles and rolling bearings integral with the latter can be removed from said upper part.

Ainsi les paliers à roulements ne sont pas mis à nu lors du démontage et restent complètement protégés même lorsque la boîte d'essieu est ouverte.Rolling bearings are not exposed during disassembly and remain fully protected even when the axle box is open.

De façon avantageuse, ladite partie supérieure comprend deux parois latérales entre lesquelles la partie inférieure s'emboîte lors de leur assemblage, les deux plateaux latéraux sur lesquels les éléments de suspension sont fixés étant arrangés du côté extérieur des deux parois latérales.Advantageously, said upper part comprises two side walls between which the lower part fits during their assembly, the two side plates on which the suspension elements are fixed being arranged on the outer side of the two side walls.

Ces caractéristiques assurent une excellente rigidité et solidité des boîtes d'essieu avec une répartition optimale de la reprise des efforts par ces dernières.These characteristics ensure excellent rigidity and solidity of the axle boxes with an optimal distribution of the recovery efforts by the latter.

Un mode d'exécution préféré est caractérisé par le fait que le dispositif de transmission et d'accouplement comprend un premier engrenage frontal destiné à coopérer avec un second engrenage frontal de l'essieu et au moins un élément élastique permettant un déplacement axial du premier engrenage frontal pour l'écarter du second engrenage frontal de l'essieu de façon que l'essieu puisse être ôté du bogie lorsque ladite partie inférieure est démontée de la boîte d'essieu.A preferred embodiment is characterized in that the transmission and coupling device comprises a first front gear intended to cooperate with a second front gear of the axle and at least one elastic element allowing axial displacement of the first gear. front axle so that the axle can be removed from the bogie when said lower portion is removed from the axle box.

On obtient ainsi un démontage particulièrement rapide et aisé des essieux sans aucun démontage, même partiel, du dispositif de transmission et d'accouplement.This results in particularly rapid and easy disassembly of the axles without any disassembly, even partial, of the transmission and coupling device.

Favorablement, le dispositif de transmission et d'accouplement comprend un engrenage destiné à coopérer avec le groupe de motorisation et fixé à un plateau extérieur muni d'éléments en élastomère et fixé à un tube creux qui est fixé à un plateau intérieur muni d'éléments en élastomère et solidaire d'un disque muni dudit engrenage frontal, ce dernier étant destiné à être fixé à l'essieu par au moins une vis accessible de l'extérieur par le tube creux.Favorably, the transmission and coupling device comprises a gear intended to cooperate with the motorization unit and fixed to an outer plate provided with elastomer elements and fixed to a hollow tube which is fixed to an inner plate provided with elements. elastomer and secured to a disc provided with said front gear, the latter being intended to be fixed to the axle by at least one screw accessible from the outside by the hollow tube.

Grâce à ces caractéristiques, le dispositif de transmission et d'accouplement présente une construction particulièrement solide, tout en permettant une dépose rapide et un remontage précis et peu compliqué.Thanks to these characteristics, the transmission and coupling device has a particularly solid construction, while allowing a quick removal and reassembly precise and uncomplicated.

D'autres avantages ressortent des caractéristiques exprimées dans les revendications dépendantes et de la description exposant ci-après l'invention plus en détails à l'aide de dessins qui représentent schématiquement et à titre d'exemple un mode d'exécution.

  • La figure 1 est une vue en perspective de ce mode d'exécution du bogie.
  • Les figures 2a et 2b sont des vues en coupe dans des positions montées et partiellement démontées d'un essieu partiel, d'une boîte d'essieu et du dispositif de transmission et d'accouplement.
  • La figure 3 est une vue en perspective éclatée d'une boîte d'essieu séparée en deux parties.
Other advantages emerge from the features expressed in the dependent claims and from the following description describing the invention in more detail with the aid of drawings which show schematically and by way of example an embodiment.
  • The figure 1 is a perspective view of this embodiment of the bogie.
  • The Figures 2a and 2b are sectional views in mounted and partially disassembled positions of a partial axle, an axle box and the transmission and coupling device.
  • The figure 3 is an exploded perspective view of a separate axle box in two parts.

Le mode d'exécution de bogie illustré à la figure 1 est du type porteur et moteur particulièrement destiné à des tramways à plancher bas, mais également susceptible d'être utilisé dans le cadre de tout véhicule ferroviaire.The bogie execution mode illustrated in figure 1 is of the carrier and motor type particularly intended for low floor trams, but also likely to be used in the context of any rail vehicle.

Il comprend un châssis 10 et deux essieux tournants 12, dont un est démonté à la figure 1 et portant chacun deux roues 14. Ce châssis possède quatre bras longitudinaux 15 qui s'appuient chacun par l'intermédiaire de deux suspensions primaires 16 sur des boîtes d'essieu 17 supportées par les essieux tournants 12. Le châssis 10 présente une portion médiane 18 surbaissée et donc une section transversale de forme générale en U dans laquelle peut être logée la partie médiane d'une caisse de véhicule sur laquelle le bogie est monté pour obtenir un véhicule à plancher bas intégral. La caisse du véhicule non illustrée est supportée par le bogie grâce à des suspensions secondaires 19, par exemple sous forme de quatre ressorts à boudin.It comprises a chassis 10 and two rotating axles 12, one of which is disassembled at the figure 1 and each bearing two wheels 14. This frame has four longitudinal arms 15 each supported by two primary suspensions 16 on axle boxes 17 supported by the rotating axles 12. The frame 10 has a middle portion 18 lowered and therefore a generally U-shaped cross section in which can be accommodated the middle portion of a vehicle body on which the bogie is mounted to obtain a full low floor vehicle. The body of the vehicle not shown is supported by the bogie with secondary suspensions 19, for example in the form of four coil springs.

De chaque côté du bogie un groupe de motorisation 20 est fixé au châssis et comprend un moteur 21 et un réducteur 22 relié par un organe de transmission et d'accouplement élastique 23 à un des deux essieux 12.On each side of the bogie a power unit 20 is fixed to the chassis and comprises a motor 21 and a gearbox 22 connected by a transmission and elastic coupling member 23 to one of the two axles 12.

Le bogie comprend encore deux freins à disque 24 avec des étriers 25 fixés sur le châssis 10 et coopérant avec des disques (non illustrés) solidaires des essieux 12 et disposés sur ces derniers à l'extrémité opposée de l'organe 23.The bogie further comprises two disc brakes 24 with stirrups 25 fixed to the frame 10 and cooperating with disks (not shown) integral with the axles 12 and arranged thereon at the opposite end of the member 23.

Les autres éléments usuels du bogie, tels que les bielles de liaison, les amortisseurs, les dispositifs de mise à terre et les butées ne sont pas décrits, car bien connus de l'homme du métier.The other usual elements of the bogie, such as connecting rods, dampers, grounding devices and stops are not described because well known to those skilled in the art.

Les figures 2a et 2b illustrent l'extrémité 30 des essieux 12 dans deux positions, en position montée sur la boîte d'essieu 17 (fig. 2a) et lors du démontage-montage (fig. 2b). La roue14 est du type phonique avec un organe élastique 31. Un palier à roulement 32 sert d'interface entre la boîte d'essieu 17 et l'axe 33 de l'essieu. Il comprend un carter de roulement 34 en deux parties, fixé d'un côté grâce à une vis 35 à l'axe et présentant de l'autre côté un labyrinthe d'étanchéité 36.The Figures 2a and 2b illustrate the end 30 of the axles 12 in two positions, in the mounted position on the axle box 17 ( Fig. 2a ) and during disassembly-assembly ( Fig. 2b ). The wheel 14 is of the acoustic type with an elastic member 31. A rolling bearing 32 serves as an interface between the axle box 17 and the axis 33 of the axle. It comprises a bearing housing 34 in two parts, fixed on one side by means of a screw 35 to the axis and having on the other side a sealing labyrinth 36.

L'organe de transmission et d'accouplement élastique 23 est partiellement disposé dans le boîtier 37 du réducteur et comprend une couronne dentée 38 engrenant avec le réducteur 22. Cette couronne est vissée à un plateau extérieur 39 présentant sur son pourtour des blocs en élastomère 40 solidaire des rayons en acier 41. Ces derniers sont à leur tour vissés à un tube creux 42 qui est solidaire d'un plateau intérieur 43 comportant des rayons en acier 44 solidaires de blocs en élastomère 45 fixés à un disque 46. Celui-ci est muni d'un engrenage frontal 47 coopérant en position montée (fig. 2a) avec un engrenage frontal 48 de l'axe 33. Un boulon central 50 qui est accessible de l'extérieur par un canal central 51 permet de fixer et de démonter l'organe 23 par rapport à l'axe 33.The transmission and elastic coupling member 23 is partially disposed in the housing 37 of the gearbox and comprises a ring gear 38 meshing with the gearbox 22. This ring is screwed to an outer plate 39 having on its periphery elastomer blocks 40 integral with the steel spokes 41. The latter are in turn screwed to a hollow tube 42 which is integral with an inner plate 43 having steel spokes 44 integral with elastomer blocks 45 fixed to a disk 46. This is equipped with a front gear 47 cooperating in the mounted position ( Fig. 2a ) with a front gear 48 of the axis 33. A central bolt 50 which is accessible from the outside by a central channel 51 makes it possible to fix and dismount the member 23 with respect to the axis 33.

Le disque 46 est muni de joints d'étanchéités 52 permettant d'éviter l'introduction d'impuretés vers le palier à roulement 32. Le canal central 51 est fermé par un couvercle amovible 53 vers l'extérieur.The disc 46 is provided with seals 52 to prevent the introduction of impurities to the rolling bearing 32. The central channel 51 is closed by a removable cover 53 to the outside.

Grâce à l'élasticité des blocs en élastomère 40 et 45 des plateaux extérieurs et intérieurs, il est possible de déplacer axialement le disque 46 par rapport à l'essieu 12 d'une distance 53 suffisante pour séparer complètement les engrenages 47, 48. Cette distance 53 est de l'ordre de 3 à 20 mm, avantageusement 12 mm, telle qu'illustrée à la figure 2b.Thanks to the elasticity of the elastomer blocks 40 and 45 of the outer and inner plates, it is possible to axially move the disc 46 relative to the axle 12 by a distance 53 sufficient to completely separate the gears 47, 48. distance 53 is of the order of 3 to 20 mm, advantageously 12 mm, as illustrated in FIG. figure 2b .

En référence à la figure 3, la boîte d'essieu 17 est formée par deux parties. Une partie supérieure 60 est constituée par une pièce en fonte de forme générale en Omega comportant deux plateaux latéraux 61 en prolongement avec des alésages 62 pour la fixation des suspensions primaires 16 des deux côtés de l'essieu. Cette partie supérieure restera lors du démontage de l'essieu solidaire du châssis 10 du bogie et comprend en outre un logement semi-circulaire 63 dans lequel s'applique le carter 34 du palier à roulement 32.With reference to the figure 3 the axle box 17 is formed by two parts. An upper portion 60 is constituted by a piece of cast iron of general Omega shape having two side plates 61 in extension with bores 62 for fixing the primary suspensions 16 on both sides of the axle. This upper part will remain during disassembly of the fixed axle of the frame 10 of the bogie and further comprises a semicircular housing 63 in which the housing 34 of the rolling bearing 32 is applied.

La partie inférieure 64 s'emboîte entre deux parois latérales 65 de la partie supérieure 60 et est fixée à cette dernière par quatre vis d'assemblage 66. Dans la position assemblée, deux parois latérales 67 sont en contact avec les parois latérales 65 de la partie supérieure de façon à former un ensemble homogène d'une grande solidité radiale.The lower part 64 fits between two side walls 65 of the upper part 60 and is fixed to the latter by four assembly screws 66. assembled position, two side walls 67 are in contact with the side walls 65 of the upper part so as to form a homogeneous assembly of high radial strength.

La partie inférieure 64 est bien entendu également munie d'un second logement semi-circulaire 68 formant une continuité avec l'autre logement 63 de la partie supérieure.The lower portion 64 is of course also provided with a second semicircular housing 68 forming a continuity with the other housing 63 of the upper part.

Lorsque les deux parties 60 et 64 sont assemblées, le palier à roulement 34 et l'essieu 12 sont bloqués dans la boîte d'essieu 17 dans le plan axial et radial.When the two parts 60 and 64 are assembled, the rolling bearing 34 and the axle 12 are locked in the axle box 17 in the axial and radial plane.

Ainsi, le bogie conformément à l'invention comprend des moyens de démontage-montage 70 de l'essieu 12 permettant le démontage rapide et facile d'un essieu sans qu'il soit nécessaire de démonter la suspension primaire 16 et tout ou partie des groupes de motorisation 20. Ces moyens 70 comportent, d'une part des boîtes d'essieu 17 en deux parties permettant de sortir l'essieu vers le bas et, d'autre part, des organes de transmission et d'accouplement élastique 23 d'un type particulier agencés de façon à permettre de dégager un engrenage 47 solidaire des organes de transmission et d'accouplement 23 d'un engrenage 48 solidaire de l'essieu 12 par déplacement axial de l'engrenage 47.Thus, the bogie according to the invention comprises disassembly-mounting means 70 of the axle 12 for quick and easy disassembly of an axle without the need to disassemble the primary suspension 16 and all or part of the groups The means 70 comprise, on the one hand axle boxes 17 in two parts for moving the axle downwards and, on the other hand, transmission and elastic coupling members 23 of the invention. a particular type arranged so as to release a gear 47 secured to the transmission and coupling members 23 of a gear 48 integral with the axle 12 by axial displacement of the gear 47.

Ainsi après avoir ôté le couvercle 53, le boulon central 50 peut être dévissé et ôté. Du fait de l'élasticité des blocs en élastomère 40, 45, le disque 46 peut être tiré vers l'extérieur manuellement ou au moyen d'un instrument de la distance 53 et l'essieu 12 peut alors être déplacé radialement vers le bas lorsque les parties inférieures 64 des boîtes d'essieu sont enlevées, les engrenages 47 et 48 étant complètement séparés l'un de l'autre. A l'autre extrémité de l'essieu, le disque de freinage se dégage également aisément de l'étrier 25 du frein à disque. Le démontage de l'essieu peut donc être exécuté sans aucune difficulté, sans travaux annexes multiples, et sans travaux de démontage tant au niveau du groupe de motorisation que celui des suspensions primaires.Thus after removing the cover 53, the central bolt 50 can be unscrewed and removed. Due to the elasticity of the elastomer blocks 40, 45, the disc 46 can be pulled out manually or by means of a distance instrument 53 and the axle 12 can then be moved radially downward when the lower parts 64 of the axle boxes are removed, the gears 47 and 48 being completely separated from each other. At the other end of the axle, the brake disc also easily disengages from the disc brake caliper. The disassembly of the axle can therefore be performed without any difficulty, without multiple ancillary works, and without disassembly work both at the level of the motorization group than that of the primary suspensions.

Les avantages de l'invention sont multiples :

  • Les essieux peuvent être démontés du bogie sans devoir démonter le bogie de la caisse du véhicule ferroviaire; ceci est valable aussi bien pour les essieux porteurs que moteurs.
  • Il n'est pas nécessaire de démonter tout ou partie de la suspension primaire, ni des groupes de motorisation et de leurs organes de transmission et d'accouplement, lors du reprofilage ou du changement des bandages de roulement des roues.
  • Lorsqu'il n'y a pas de tour de fosse, le temps de démontage/montage est considérablement raccourci pour le reprofilage des roues.
  • Le changement des bandages des roues peut être exécuté aisément et rapidement.
  • Les roulements ne sont pas mis à nu et restent complètement protégés - même lorsque la boîte d'essieu est ouverte.
  • Il est également possible de démonter très rapidement le groupe de motorisation et le dispositif de transmission et d'accouplement sans devoir démonter les essieux ou les boîtes d'essieu.
The advantages of the invention are manifold:
  • The axles can be dismantled from the bogie without dismantling the bogie from the body of the railway vehicle; this is valid for both axles and engines.
  • It is not necessary to disassemble all or part of the primary suspension, or groups of engines and their transmission and coupling, during the reprofiling or change of wheel treadings.
  • When there is no pit tower, the disassembly / assembly time is considerably shortened for the reprofiling of the wheels.
  • Changing wheel tires can be done easily and quickly.
  • The bearings are not exposed and remain fully protected - even when the axle box is open.
  • It is also possible to disassemble the power unit and the transmission and coupling device very quickly without dismantling the axles or axle boxes.

Il est bien entendu que le mode de réalisation décrit ci-dessus ne présente aucun caractère limitatif et qu'il peut recevoir toutes modifications désirables à l'intérieur du cadre tel que défini par la revendication 1. En particulier, selon une variante, le bogie pourra être du type porteur non motorisé. Le concept des boîtes d'essieu en deux parties permet alors également le démontage/montage rapide des essieux, sans qu'il soit nécessaire de prévoir un organe de transmission et d'accouplement à déplacement axial. La boîte d'essieu pourra également présenter une toute autre forme et construction; elle pourrait par exemple présenter plus de deux parties, une première partie de la boîte d'essieu pourra être articulée à une seconde partie fixe de façon à pouvoir être écartée de façon à ouvrir un passage radial de l'essieu. Le déplacement de l'essieu lors du démontage pourra être vertical ou oblique. L'engrenage entre les groupes de motorisation et les essieux pourraient être de tout autre type. L'organe de transmission et d'accouplement élastique pourrait présenter une toute autre construction, mais permettant toujours un dégagement aisé de l'essieu sans démontage du groupe de motorisation. Le bogie pourrait présenter un nombre différent d'essieux et il pourrait être utilisé dans le cadre d'autres véhicules sur rail que les tramways. Les essieux pourront également être du type non tournant.It is understood that the embodiment described above is not limiting and that it can receive any desirable modifications within the frame as defined by claim 1. In particular, according to one variant, the bogie may be of the non-motorized carrier type. The concept of two-axle axle boxes then also allows the rapid disassembly / assembly of the axles, without the need for an axially displaced transmission and coupling member. The axle box may also have a different shape and construction; it could for example have more than two parts, a first portion of the axle box may be articulated to a second fixed portion so as to be spaced so as to open a radial passage of the axle. The displacement of the axle during disassembly may be vertical or oblique. The gearing between the power units and the axles could be of any other type. The organ of transmission and elastic coupling could have a completely different construction, but still allowing easy release of the axle without disassembly of the engine group. The truck could have a different number of axles and could be used in other rail vehicles than trams. The axles may also be of the non-rotating type.

Claims (7)

  1. Bogie intended to be mounted on a rail-borne vehicle and having a chassis (10) and at least two axles (12) mounted via axle boxes (17) and suspension elements (16) on the chassis, characterised in that the bogie comprises means (70) for dismounting/mounting the axles (12) in a radial direction without dismounting the suspension elements (16), these dismounting/mounting means having axle boxes (17) in at least two parts (60, 64), at least one part (64) of which being able to be moved away in order to free a radial passage to the axle (12).
  2. Bogie as claimed in Claim 1, having an engine group (20) fixed to the chassis (10) connected to at least one of the two axles (12) via a transmission and coupling device (23), characterised in that said dismounting/mounting means (70) have means for at least partially moving the transmission and coupling device (23) away from the axle (12) in an axial direction, the whole arrangement being such that said axle can be removed without dismounting the engine group and the transmission and coupling device.
  3. Bogie as claimed in Claim 1 or 2, characterised in that the axle box (17) comprises an upper part (60) fixedly attached to the suspension elements (16) and the chassis (10) and a removable lower part (64), which parts are shaped so as to allow a radial passage of the axle (12) after dismounting the lower part (64), said upper part (60) having a general omega shape with two extended lateral plates (61) against which the suspension elements abut.
  4. Bogie as claimed in Claim 3, characterised in that the axles (12) are provided with roller bearings (32) fixed to the periphery thereof and interposed between the axles (12) and the axle boxes (17), said lower part (64) being shaped so as to allow a radial passage for the roller bearing (32) after dismounting the lower part (46), and so as to allow the axles (12) and the roller bearings (32) fixedly attached thereto to be removed from said upper part (60).
  5. Bogie as claimed in Claim 3, characterised in that said upper part (60) comprises two lateral walls (65) between which the lower part (64) is embedded during assembly thereof, the two lateral plates (61) on which the suspension elements (16) are fixed being arranged on the outer side of the two lateral walls (65).
  6. Bogie as claimed in Claim 2, characterised in that the transmission and coupling device (23) comprises a first front gear (47) intended to co-operate with a second front gear (48) of the axle (12) and at least one elastic element (40, 45) allowing axial displacement of the first front gear (47) to move it away from the second front gear (48) of the axle such that the axle (12) can be removed from the bogie when said lower part (64) is dismounted from the axle box (17).
  7. Bogie as claimed in Claim 6, characterised in that the transmission and coupling device (23) comprises a gear (38) intended to co-operate with the engine group (20) and fixed to an outer plate (39) provided with elastomer elements (40) and fixed to a hollow tube (42) which is fixed to an inner plate (43) provided with elastomer elements (45) and fixedly attached to a disk (46) provided with said front gear (47), the latter being intended to be fixed to the axle (12) by at least one screw (50) which is accessible from the outside via the hollow tube (42).
EP02772685.0A 2001-10-17 2002-10-04 Bogie with axles easily assembled and disassembled Expired - Lifetime EP1436186B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH190301 2001-10-17
CH19032001A CH694693A5 (en) 2001-10-17 2001-10-17 Bogie.
PCT/IB2002/004090 WO2003033325A1 (en) 2001-10-17 2002-10-04 Bogie with axles easily assembled and disassembled

Publications (3)

Publication Number Publication Date
EP1436186A1 EP1436186A1 (en) 2004-07-14
EP1436186B1 true EP1436186B1 (en) 2012-06-20
EP1436186B2 EP1436186B2 (en) 2017-09-27

Family

ID=4566732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02772685.0A Expired - Lifetime EP1436186B2 (en) 2001-10-17 2002-10-04 Bogie with axles easily assembled and disassembled

Country Status (3)

Country Link
EP (1) EP1436186B2 (en)
CH (1) CH694693A5 (en)
WO (1) WO2003033325A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113335328B (en) * 2021-06-04 2024-08-06 中车眉山车辆有限公司 Built-in axle box suspension railway wagon welding bogie
CN113335326B (en) * 2021-06-04 2024-08-06 中车眉山车辆有限公司 Multipurpose flatcar suitable for plateau, alpine, long and large down ramp

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB217362A (en) * 1923-04-04 1924-06-19 James Hatton Improvements in or relating to pedestal bearings for the axles of colliery trams andlike vehicles
BE513599A (en) * 1951-08-25
DE1797771U (en) † 1958-11-04 1959-10-15 Ver Westdeutsche Waggonfab STORAGE OF A WHEEL SET IN A DIVIDED AXLE BEARING HOUSING.
BE809588A (en) * 1974-01-10 1974-05-02 IMPROVEMENTS TO SUSPENSION DEVICES FOR SPRINGS ON AXLE BOXES FOR RAILWAY WAGONS AND SIMILAR APPLICATIONS.
SE373323B (en) * 1974-01-15 1975-02-03 Skf Ind Trading & Dev SADLE FOR SHAFT BEARING
GB1584753A (en) * 1978-05-31 1981-02-18 Timken Co Railway axle bearing mountings

Also Published As

Publication number Publication date
EP1436186A1 (en) 2004-07-14
CH694693A5 (en) 2005-06-15
WO2003033325A1 (en) 2003-04-24
EP1436186B2 (en) 2017-09-27

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