EP3222485B1 - Railway vehicle bogie comprising an offset primary suspension device - Google Patents

Railway vehicle bogie comprising an offset primary suspension device Download PDF

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Publication number
EP3222485B1
EP3222485B1 EP17162240.0A EP17162240A EP3222485B1 EP 3222485 B1 EP3222485 B1 EP 3222485B1 EP 17162240 A EP17162240 A EP 17162240A EP 3222485 B1 EP3222485 B1 EP 3222485B1
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EP
European Patent Office
Prior art keywords
axle box
rotation
axis
bogie
stringer
Prior art date
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EP17162240.0A
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German (de)
French (fr)
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EP3222485A1 (en
Inventor
Fabrice COTTIN
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Alstom Transport Technologies SAS
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Alstom Transport Technologies SAS
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Priority to PL17162240T priority Critical patent/PL3222485T3/en
Publication of EP3222485A1 publication Critical patent/EP3222485A1/en
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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F3/00—Types of bogies
    • B61F3/02—Types of bogies with more than one axle
    • 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
    • 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

Definitions

  • the present invention relates to a railway vehicle bogie, of the type comprising a chassis comprising at least one spar extending in a longitudinal direction and at least one wheel, said wheel being mounted on an axle box and being rotatable relative to to said axle box about an axis of rotation substantially perpendicular to the longitudinal direction, said axle box being fixed to the spar by a primary suspension device comprising an elastic member fixed on the one hand to the spar and other part to the axle box and arranged to allow a clearance in a direction of elevation of the chassis relative to the axle box and the wheel, the elevation direction being substantially perpendicular to the longitudinal direction and the rotation axis.
  • each primary suspension generally comprises a resilient element 1, such as a coil spring, extending between a plate 2 disposed on the axle box 4 and a bearing surface 6 s extending under a beam 8 of the chassis.
  • a resilient element 1 such as a coil spring
  • a travel in a direction of elevation substantially vertical when the rail vehicle is traveling, is allowed between the axle and the frame, which allows the desired damping.
  • Such an arrangement is necessary to allow the recovery of the forces applied by the mass of the vehicle extending above the bogie.
  • such a bogie architecture requires that the spar 6 extends above the axle box, which increases the size of the bogie in the direction of elevation.
  • Such a size can be inconvenient, especially for railway vehicles whose cars have two floors, which requires a lower floor.
  • a bogie too bulky it is not possible to have two floors to the right of the bogie without greatly limiting the volume of the passenger compartment, which is uncomfortable for the movement of passengers.
  • Some railway vehicles plan to have only one passage, called the interconnection passage, on a single floor at the bogies' right, which makes it necessary to borrow a stairway to pass from one car to another when a passenger is not at the level at which the interchange passage extends.
  • One of the aims of the invention is to overcome these disadvantages by proposing a bogie whose size, especially in the direction of elevation, is reduced.
  • the invention relates to a bogie of the aforementioned type, in which the primary suspension device comprises at least one power transmission linkage hinged on the one hand to the axle box and on the other hand to a lever articulated on the spar, said lever being further articulated to the elastic element so that the elastic element is fixed to the axle box by means of the lever and the transmission rod.
  • the transmission rod and the lever allow to deport the elastic element to a location in which it does not add to the space above the axle box.
  • this arrangement makes it possible to arrange the elastic element in such a way that it extends in another direction than the direction of elevation.
  • the length of the elastic element can be increased to improve the recovery of forces supported by the elastic element without increasing the bulk in the direction of elevation of the primary suspension device.
  • the term “longitudinal” is defined with respect to the direction of movement of a railway vehicle on rails.
  • the term “transverse” is defined in a direction perpendicular to the longitudinal direction and corresponding to the direction in which the rails are spaced.
  • the term “elevation” is defined in a direction perpendicular to the longitudinal direction and the transverse direction. When the railway vehicle is traveling on horizontal rails, the longitudinal and transverse directions are substantially horizontal and the elevation direction is substantially vertical.
  • the terms “below” and “above” are defined relative to the elevation direction.
  • a bogie 10 comprising a frame 12 and at least one wheel 14 connected to a spar 16 of the frame 12 via an axle box 18 and a primary suspension device 20 is described.
  • the wheel 14 is rotatable relative to the axle box 18 about a substantially transverse axis of rotation A and has a height h, measured in the direction of elevation, equal to the diameter of the wheel 14.
  • the height h is for example substantially between 750 mm and 1250 mm.
  • the spar 16 extends in a longitudinal direction at a height h ', measured in the direction of elevation, less than the height h of the wheel.
  • a height h ' measured in the direction of elevation, less than the height h of the wheel.
  • the spar 16 does not include any portion rising above the axle box 18, as shown in FIG. figure 2 .
  • the height h ' is for example substantially between 475 mm and 725 mm. Such a result can be obtained thanks to the primary suspension device 20 according to the invention as will be described later.
  • a longitudinal end 26 of the spar 16 extends substantially at the same height as the axle box 18 opposite it, as shown in FIG. figure 2 .
  • the primary suspension device 20 comprises at least one elastic element 28 extending between a plate 30 integral with the axle box 18 and a bearing surface 32 integral with the beam 16, extending facing the plate 30.
  • the plate 30 is secured to the axle box 18 via a transmission rod 34 and a lever 36.
  • the transmission rod 34 is articulated at one end 38 to the axle box and at its other end 40 to the lever 36 about axes of articulation substantially parallel to the axis of rotation A.
  • the transmission rod 34 extends substantially in the direction of elevation between the axis of rotation A and the longitudinal end 26 of the beam 16 in the longitudinal direction. More particularly, the end 38 of the transmission rod 34 is articulated to a lower portion 42 of the axle box.
  • lower part is meant a portion extending under the axis of rotation A in the direction of elevation. The lower part 42 is further shifted towards the spar 16 in the longitudinal direction.
  • the lever 36 has a substantially V-shape comprising two branches 44 joining at a hinge point 46 articulated to the spar 16 about an axis of articulation substantially parallel to the axis of rotation A. More particularly, the point d hinge 46 is hinged to an upper portion 48 of the spar 16 projecting from the longitudinal end 26 of the spar 16 to the axle box 18. Upper part means a portion extending over the the axis of rotation A in the direction of elevation.
  • the end 40 of the transmission rod 34 is articulated to the end of one of the legs 44 of the lever 36 about an axis of articulation substantially parallel to the axis of rotation A. More particularly, the end 40 is articulated to a branch 44 which extends substantially in the longitudinal direction towards the axle box 18 from the point of articulation 46.
  • the end of the other leg 44 of the lever 36 is articulated to the plate 30 about an axis of articulation substantially parallel to the axis of rotation A.
  • This branch 44 hinged to the plate 30 extends substantially in the direction of rotation. protruding elevation of the upper portion 48 of the spar 16 from the pivot point 46.
  • the plate 30 extends substantially in a plane containing an elevation direction and a transverse direction.
  • the bearing surface 32 extends substantially parallel to the plate 30 and is articulated to the spar 16 about an axis of articulation substantially parallel to the axis of rotation A. More particularly the bearing surface 32 is articulated to a hinge point 50 projecting from an intermediate portion of the spar 16 disposed in the vicinity of the longitudinal end 26 of the spar.
  • the plate 30 and the bearing surface 32 define between them a space extending substantially in the longitudinal direction to the right and above a longitudinal end portion of the beam 16.
  • the elastic element 28 is disposed in this embodiment. space so that the elastic member 28 extends along a substantially longitudinal axis.
  • the elastic element 28 is for example formed by a helical spring whose axis extends substantially in the longitudinal direction and whose ends bear on the plate 30 on the one hand and on the bearing surface 32 on the other go.
  • the length of the elastic element 28 can be chosen to effectively absorb the forces between the axle and the frame by positioning the hinge point 50 at a distance adapted accordingly to the longitudinal end 26 of the spar 16.
  • the lever 36 forms a return for transforming a movement in the direction of elevation of the transmission rod 34, due to a relative movement of the spar 16 relative to the axle box 18 in the direction of elevation, in one direction. movement in the longitudinal direction applied to the elastic member 28.
  • the elastic member 28 is thus adapted to resume the forces in the direction of elevation between the spar 16 and the axle box 18 and thus fulfill its function of suspension.
  • the primary suspension device further comprises a lower connecting rod 52 and an upper connecting rod 54 each joining the longitudinal end 26 of the spar 16 to the axle box 18.
  • the lower rods 52 and 54 are identical, that is to say they have the same shape and the same length, and extend parallel in substantially longitudinal directions when the primary suspension device is not requested. .
  • Each connecting rod 52, 54 is hinged at one of its ends to the axle box 18 and at its end to the spar 16 about axes of articulation substantially parallel to the axis of rotation. rotation A.
  • the lower link 52 is articulated to the lower portion 42 of the axle box 18 on the one hand and to a lower portion 56 of the spar 16 on the other hand.
  • the lower articulation point 58 between the lower connecting rod 52 and the lower part 42 is shifted longitudinally and in the direction of elevation relative to the axis of rotation A.
  • the lower articulation point 58 is shifted towards the longitudinal member and is arranged under the axis of rotation A in the direction of elevation, as visible on the figure 2 .
  • the upper link 54 is articulated to an upper portion 60 of the axle box on the one hand and to the end of the upper portion 48 of the spar 16 on the other hand.
  • the upper articulation point 62 between the upper link 54 and the upper part 60 is shifted longitudinally and in the direction of elevation relative to the axis of rotation A.
  • the upper articulation point 62 is shifted towards the outside the bogie in the longitudinal direction and is disposed above the axis of rotation A in the direction of elevation, as visible on the figure 2 .
  • the lower articulation point 64 between the lower link 52 and the lower part 56 of the spar and the upper articulation point 66 between the upper link 54 and the upper part 48 of the spar are also offset relative to each other in the longitudinal direction and in the direction of elevation.
  • the articulation points 58, 62, 64, 66 form a deformable parallelogram according to the movement of the connecting rods induced by the movement of the spar 16 relative to the axle box 18.
  • a deformable parallelogram makes it possible to take up the forces applied. between the frame and the rolling part of the bogie according to the elevation direction and resume the torque generated by the cantilevered mounting of the elastic member relative to the axis of rotation A, that is to say the offset mounting in the longitudinal direction and in the direction of elevation of the elastic member 28 relative to the axis of rotation A.
  • the bulk of the frame 12 in the direction of elevation is reduced, since the height h 'at which the spar 16 extends may be smaller than the height h of the wheel, as shown in FIG. has been previously described, while maintaining an effective primary articulation device 20 able to suspend the frame 12 with respect to the axle box 18.
  • the interconnecting passage comprises a lower floor connecting the lower floors of two adjacent cars and an upper floor connecting the upper floors of these two cars, the lower floor passing over the bogie. Since frame members 16 extend at a reduced height, the height of the lower floor of the interconnect passage may also be reduced, thereby increasing the available space in the interconnect passage.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Handcart (AREA)

Description

La présente invention concerne un bogie de véhicule ferroviaire, du type comprenant un châssis comprenant au moins un longeron s'étendant selon une direction longitudinale et au moins une roue, ladite roue étant montée sur une boîte d'essieu et étant mobile en rotation par rapport à ladite boîte d'essieu autour d'un axe de rotation sensiblement perpendiculaire à la direction longitudinale, ladite boîte d'essieu étant fixée au longeron par un dispositif de suspension primaire comprenant un élément élastique fixé d'une part au longeron et d'autre part à la boîte d'essieu et agencé pour autoriser un débattement selon une direction d'élévation du châssis par rapport à la boîte d'essieu et à la roue, la direction d'élévation étant sensiblement perpendiculaire à la direction longitudinale et à l'axe de rotation.The present invention relates to a railway vehicle bogie, of the type comprising a chassis comprising at least one spar extending in a longitudinal direction and at least one wheel, said wheel being mounted on an axle box and being rotatable relative to to said axle box about an axis of rotation substantially perpendicular to the longitudinal direction, said axle box being fixed to the spar by a primary suspension device comprising an elastic member fixed on the one hand to the spar and other part to the axle box and arranged to allow a clearance in a direction of elevation of the chassis relative to the axle box and the wheel, the elevation direction being substantially perpendicular to the longitudinal direction and the rotation axis.

Dans un bogie de véhicule ferroviaire, il est connu de suspendre le châssis du bogie par rapport aux essieux par l'intermédiaire de suspensions primaires s'étendant entre les boîtes d'essieu sur lesquelles les roues sont montées mobiles en rotation et les longerons du bogie. De telles suspensions primaires permettent d'amortir les déformations, telles que les gauches de voies, entre les essieux et le châssis.In a railway vehicle bogie, it is known to suspend the chassis of the bogie relative to the axles by means of primary suspensions extending between the axle boxes on which the wheels are mounted mobile in rotation and the longitudinal members of the bogie. . Such primary suspensions allow to damp the deformations, such as left lanes, between the axles and the chassis.

Comme représenté sur la figure 1 qui montre une partie d'un bogie conventionnel, chaque suspension primaire comprend généralement un élément élastique 1, tel qu'un ressort hélicoïdal, s'étendant entre un plateau 2 disposé sur la boîte d'essieu 4 et une surface d'appui 6 s'étendant sous un longeron 8 du châssis. Ainsi, un débattement selon une direction d'élévation, sensiblement verticale lorsque le véhicule ferroviaire circule, est autorisé entre l'essieu et le châssis, ce qui permet l'amortissement souhaité. Un tel agencement est nécessaire pour permettre la reprise des efforts appliqués par la masse du véhicule s'étendant au-dessus du bogie. Cependant, une telle architecture du bogie nécessite que le longeron 6 s'étende au-dessus de la boîte d'essieu, ce qui augmente l'encombrement du bogie selon la direction d'élévation.As shown on the figure 1 which shows a part of a conventional bogie, each primary suspension generally comprises a resilient element 1, such as a coil spring, extending between a plate 2 disposed on the axle box 4 and a bearing surface 6 s extending under a beam 8 of the chassis. Thus, a travel in a direction of elevation, substantially vertical when the rail vehicle is traveling, is allowed between the axle and the frame, which allows the desired damping. Such an arrangement is necessary to allow the recovery of the forces applied by the mass of the vehicle extending above the bogie. However, such a bogie architecture requires that the spar 6 extends above the axle box, which increases the size of the bogie in the direction of elevation.

Un tel encombrement peut être gênant, notamment pour des véhicules ferroviaires dont les voitures ont deux étages, ce qui nécessite d'avoir un plancher inférieur. Dans le cas d'un bogie trop encombrant, il n'est pas possible d'avoir deux étages au droit du bogie sans limiter fortement le volume de l'habitacle, ce qui est inconfortable pour la circulation des passagers. Certains véhicules ferroviaires prévoient de n'avoir qu'un passage, dit passage d'interconnexion, à un seul étage au droit des bogies, ce qui oblige à emprunter un escalier pour passer d'une voiture à une autre lorsqu'un passager n'est pas au niveau auquel s'étend le passage d'interconnexion.Such a size can be inconvenient, especially for railway vehicles whose cars have two floors, which requires a lower floor. In the case of a bogie too bulky, it is not possible to have two floors to the right of the bogie without greatly limiting the volume of the passenger compartment, which is uncomfortable for the movement of passengers. Some railway vehicles plan to have only one passage, called the interconnection passage, on a single floor at the bogies' right, which makes it necessary to borrow a stairway to pass from one car to another when a passenger is not at the level at which the interchange passage extends.

Le document EP 2 476 600 A1 décrit un bogie de véhicule ferroviaire comprenant un châssis et au moins une roue montée sur une boîte d'essieu et étant mobile par rapport à la boîte d'essieu. La boîte d'essieu est fixée à une traverse du châssis par un dispositif de suspension primaire comprenant un élément de suspension diagonal.The document EP 2 476 600 A1 discloses a railway vehicle bogie comprising a frame and at least one wheel mounted on an axle box and being movable relative to the axle box. The axle box is fixed to a frame cross member by a primary suspension device comprising a diagonal suspension element.

L'un des buts de l'invention est de pallier ces inconvénients en proposant un bogie dont l'encombrement, notamment selon la direction d'élévation, est réduit.One of the aims of the invention is to overcome these disadvantages by proposing a bogie whose size, especially in the direction of elevation, is reduced.

A cet effet, l'invention concerne un bogie du type précité, dans lequel le dispositif de suspension primaire comprend au moins un bielle de transmission d'effort articulée d'une part à la boîte d'essieu et d'autre part à un levier articulé sur le longeron, ledit levier étant en outre articulé à l'élément élastique de sorte que l'élément élastique est fixé à la boîte d'essieu par l'intermédiaire du levier et de la bielle de transmission.For this purpose, the invention relates to a bogie of the aforementioned type, in which the primary suspension device comprises at least one power transmission linkage hinged on the one hand to the axle box and on the other hand to a lever articulated on the spar, said lever being further articulated to the elastic element so that the elastic element is fixed to the axle box by means of the lever and the transmission rod.

La bielle de transmission et le levier permettent de déporter l'élément élastique à un emplacement dans lequel il n'ajoute pas à l'encombrement au-dessus de la boîte d'essieu. En outre, cet agencement permet de disposer l'élément élastique de telle façon qu'il s'étend dans une autre direction que la direction d'élévation. Ainsi, la longueur de l'élément élastique peut être augmentée pour améliorer la reprise d'efforts supportée par l'élément élastique sans augmenter l'encombrement selon la direction d'élévation du dispositif de suspension primaire.The transmission rod and the lever allow to deport the elastic element to a location in which it does not add to the space above the axle box. In addition, this arrangement makes it possible to arrange the elastic element in such a way that it extends in another direction than the direction of elevation. Thus, the length of the elastic element can be increased to improve the recovery of forces supported by the elastic element without increasing the bulk in the direction of elevation of the primary suspension device.

Selon d'autres caractéristiques du bogie selon l'invention, prises isolément ou selon toutes les combinaisons techniques possibles :

  • la bielle de transmission et le levier sont agencés pour que l'élément élastique s'étende selon une direction sensiblement longitudinale au droit d'une partie extrême longitudinale du longeron ;
  • la bielle de transmission s'étend sensiblement selon la direction d'élévation ;
  • la bielle de transmission est disposée entre l'axe de rotation et une extrémité longitudinale du longeron selon la direction longitudinale ;
  • les axes d'articulation de la bielle de transmission et du levier sont parallèles à l'axe de rotation ;
  • le dispositif de suspension primaire comprend en outre une bielle inférieure articulée d'une part à un point d'articulation inférieur du longeron et d'autre part à un point d'articulation inférieur de la boîte d'essieu et une bielle supérieure articulée d'une part à un point d'articulation supérieur du longeron et d'autre part à un point d'articulation supérieur de la boîte d'essieu, le point d'articulation inférieur et le point d'articulation supérieur du longeron, respectivement de la boîte d'essieu, s'étendant l'un en-dessous de l'autre selon la direction d'élévation ;
  • le point d'articulation inférieur et le point d'articulation supérieur de la boîte d'essieu sont disposés de part et d'autre de l'axe de rotation selon la direction d'élévation ;
  • le point d'articulation inférieur et le point d'articulation supérieur de la boîte d'essieu sont disposés de part et d'autre de l'axe de rotation selon la direction longitudinale ;
  • la bielle inférieure et la bielle supérieure sont de même longueur ; et
  • le longeron s'étend à une hauteur, mesurée selon la direction d'élévation, inférieure à la hauteur de la roue.
According to other characteristics of the bogie according to the invention, taken separately or according to all the possible technical combinations:
  • the transmission rod and the lever are arranged so that the elastic element extends in a substantially longitudinal direction to the right of a longitudinal end portion of the spar;
  • the transmission link extends substantially in the direction of elevation;
  • the transmission rod is disposed between the axis of rotation and a longitudinal end of the spar in the longitudinal direction;
  • the axes of articulation of the transmission rod and the lever are parallel to the axis of rotation;
  • the primary suspension device further comprises a lower connecting rod hinged on the one hand to a lower hinge point of the spar and on the other hand to a lower hinge point of the axle box and an articulated upper hinge rod. a part at an upper hinge point of the spar and secondly at an upper hinge point of the axle box, the lower hinge point and the hinge point upper of the spar, respectively of the axle box, extending one below the other in the direction of elevation;
  • the lower articulation point and the upper articulation point of the axle box are arranged on either side of the axis of rotation in the direction of elevation;
  • the lower hinge point and the upper hinge point of the axle box are arranged on either side of the axis of rotation in the longitudinal direction;
  • the lower link and the upper link are of the same length; and
  • the spar extends at a height, measured in the direction of elevation, less than the height of the wheel.

D'autres aspects et avantages de l'invention apparaîtront à la lecture de la description qui suit, donnée à titre d'exemple et faite en référence aux dessins annexés, dans lesquels :

  • la figure 1 est une représentation schématique de côté d'une partie d'un bogie selon l'art antérieur,
  • la figure 2 est une représentation schématique de côté d'une partie d'un bogie selon l'invention, et
  • la figure 3 est une représentation schématique simplifiée de dessus d'un bogie selon l'invention.
Other aspects and advantages of the invention will appear on reading the description which follows, given by way of example and with reference to the appended drawings, in which:
  • the figure 1 is a schematic side view of a part of a bogie according to the prior art,
  • the figure 2 is a schematic side view of a portion of a bogie according to the invention, and
  • the figure 3 is a simplified schematic representation of above a bogie according to the invention.

Dans la description, le terme « longitudinal » est défini par rapport à la direction de circulation d'un véhicule ferroviaire sur des rails. Le terme « transversal » est défini selon une direction perpendiculaire à la direction longitudinale et correspondant à la direction selon laquelle les rails sont espacés. Le terme « élévation » est défini selon une direction perpendiculaire à la direction longitudinale et à la direction transversale. Lorsque le véhicule ferroviaire circule sur des rails horizontaux, les directions longitudinale et transversale sont sensiblement horizontales et la direction d'élévation est sensiblement verticale. Les termes « en-dessous » et « au-dessus » sont définis par rapport à la direction d'élévation.In the description, the term "longitudinal" is defined with respect to the direction of movement of a railway vehicle on rails. The term "transverse" is defined in a direction perpendicular to the longitudinal direction and corresponding to the direction in which the rails are spaced. The term "elevation" is defined in a direction perpendicular to the longitudinal direction and the transverse direction. When the railway vehicle is traveling on horizontal rails, the longitudinal and transverse directions are substantially horizontal and the elevation direction is substantially vertical. The terms "below" and "above" are defined relative to the elevation direction.

En référence aux figures 2 et 3, on décrit un bogie 10 comprenant un châssis 12 et au moins une roue 14 reliée à un longeron 16 du châssis 12 par l'intermédiaire d'une boîte d'essieu 18 et d'un dispositif de suspension primaire 20.With reference to figures 2 and 3 , a bogie 10 comprising a frame 12 and at least one wheel 14 connected to a spar 16 of the frame 12 via an axle box 18 and a primary suspension device 20 is described.

Selon le mode de réalisation représenté sur la figure 3, le bogie 10 comprend, de façon conventionnelle, quatre roues 14 reliées chacune au châssis 12 par l'intermédiaire d'une boîte d'essieu 18 et d'un dispositif de suspension primaire 18. Les roues 14 sont reliées deux à deux par un arbre 22 de sorte à former deux essieux montés chacun mobile en rotation dans une paire de boîtes d'essieu 18. Le châssis 12 comprend deux longerons 16 reliant chacun l'une des boîtes d'essieu 18 d'une paire à l'une des boîtes d'essieu 18 de l'autre paire de boîtes d'essieu 18. Les longerons 16 sont par exemple reliés l'un à l'autre par deux traverses 24. Cependant, cette structure particulière de bogie 10 n'est donnée qu'à titre d'exemple et d'autres structures pourraient être envisagées. Ainsi, Chaque roue pourrait être montée mobile en rotation dans une boîte d'essieu indépendamment des autres. Le bogie pourrait comprendre plus de deux longerons, par exemple articulés entre eux. Les roues ont été représentées comme s'étendant à l'extérieur du bogie 10, mais elles pourraient être disposées à l'intérieur. Le bogie peut être motorisé ou non, c'est-à-dire qu'il peut comprendre, ou non, un ou deux moteurs pour entraîner en rotation un ou les deux essieux du bogie 10.According to the embodiment shown on the figure 3 , the bogie 10 comprises, conventionally, four wheels 14 each connected to the frame 12 via an axle box 18 and a primary suspension device 18. The wheels 14 are connected in pairs by a shaft 22 so as to form two wheelsets each mounted movable in rotation in a pair of axle boxes 18. The frame 12 comprises two longitudinal members 16 each connecting one of the axle boxes 18 of a pair to one of the axle boxes 18 of the other pair The longitudinal members 16 are for example connected to each other by two cross members 24. However, this particular truck structure 10 is given only by way of example and other structures could be considered. Thus, each wheel could be rotatably mounted in an axle box independently of the others. The bogie could comprise more than two longitudinal members, for example articulated between them. The wheels have been shown as extending outside the bogie 10, but they could be arranged inside. The bogie may be motorized or not, that is to say that it may or may not comprise one or two motors for rotating one or both axles of the truck 10.

Dans la suite de la description seule la relation entre une roue, une boîte d'essieu et un longeron sera décrite, cette relation étant identique pour toutes les roues, boîtes d'essieu et longerons.In the following description only the relationship between a wheel, an axle box and a spar will be described, this relationship being identical for all wheels, axle boxes and spars.

La roue 14 est mobile en rotation par rapport à la boîte d'essieu 18 autour d'un axe de rotation A sensiblement transversal et présente une hauteur h, mesurée selon la direction d'élévation, égale au diamètre de la roue 14. La hauteur h est par exemple sensiblement comprise entre 750 mm et 1250 mm.The wheel 14 is rotatable relative to the axle box 18 about a substantially transverse axis of rotation A and has a height h, measured in the direction of elevation, equal to the diameter of the wheel 14. The height h is for example substantially between 750 mm and 1250 mm.

Le longeron 16 s'étend selon une direction longitudinale à une hauteur h', mesurée selon la direction d'élévation, inférieure à la hauteur h de la roue. Par inférieure, on entend que le longeron 16 ne présente aucune partie s'étendant à une hauteur supérieure à celle de la roue. Le longeron 16 ne comprend notamment pas de partie s'élevant au-dessus de la boîte d'essieu 18, comme représenté sur la figure 2. La hauteur h' est par exemple sensiblement comprise entre 475 mm et 725 mm. Un tel résultat peut être obtenu grâce au dispositif de suspension primaire 20 selon l'invention comme cela sera décrit ultérieurement.The spar 16 extends in a longitudinal direction at a height h ', measured in the direction of elevation, less than the height h of the wheel. By lower is meant that the spar 16 has no portion extending to a height greater than that of the wheel. The spar 16 does not include any portion rising above the axle box 18, as shown in FIG. figure 2 . The height h 'is for example substantially between 475 mm and 725 mm. Such a result can be obtained thanks to the primary suspension device 20 according to the invention as will be described later.

Lorsque le dispositif de suspension primaire 20 n'est pas sollicité, une extrémité longitudinale 26 du longeron 16 s'étend sensiblement à la même hauteur que la boîte d'essieu 18 en regard de celle-ci, comme représenté sur la figure 2.When the primary suspension device 20 is not biased, a longitudinal end 26 of the spar 16 extends substantially at the same height as the axle box 18 opposite it, as shown in FIG. figure 2 .

Le dispositif de suspension primaire 20 comprend au moins un élément élastique 28 s'étendant entre un plateau 30 solidaire de la boîte d'essieu 18 et une surface d'appui 32 solidaire du longeron 16, s'étendant en regard du plateau 30.The primary suspension device 20 comprises at least one elastic element 28 extending between a plate 30 integral with the axle box 18 and a bearing surface 32 integral with the beam 16, extending facing the plate 30.

Le plateau 30 est solidaire de la boîte d'essieu 18 par l'intermédiaire d'une bielle de transmission 34 et d'un levier 36.The plate 30 is secured to the axle box 18 via a transmission rod 34 and a lever 36.

La bielle de transmission 34 est articulée à l'une 38 de ses extrémités à la boîte d'essieu et à son autre extrémité 40 au levier 36 autour d'axes d'articulation sensiblement parallèles à l'axe de rotation A.The transmission rod 34 is articulated at one end 38 to the axle box and at its other end 40 to the lever 36 about axes of articulation substantially parallel to the axis of rotation A.

La bielle de transmission 34 s'étend sensiblement selon la direction d'élévation entre l'axe de rotation A et l'extrémité longitudinale 26 du longeron 16 selon la direction longitudinale. Plus particulièrement, l'extrémité 38 de la bielle de transmission 34 est articulée à une partie inférieure 42 de la boîte d'essieu. Par partie inférieure, on entend une partie s'étendant sous l'axe de rotation A selon la direction d'élévation. La partie inférieure 42 est en outre décalée vers le longeron 16 selon la direction longitudinale.The transmission rod 34 extends substantially in the direction of elevation between the axis of rotation A and the longitudinal end 26 of the beam 16 in the longitudinal direction. More particularly, the end 38 of the transmission rod 34 is articulated to a lower portion 42 of the axle box. By lower part is meant a portion extending under the axis of rotation A in the direction of elevation. The lower part 42 is further shifted towards the spar 16 in the longitudinal direction.

Le levier 36 présente sensiblement une forme de V comprenant deux branches 44 se joignant en un point d'articulation 46 articulé au longeron 16 autour d'un axe d'articulation sensiblement parallèle à l'axe de rotation A. Plus particulièrement, le point d'articulation 46 est articulé à une partie supérieure 48 du longeron 16 s'étendant en saillie de l'extrémité longitudinale 26 du longeron 16 vers la boîte d'essieu 18. Par partie supérieure, on entend une partie s'étendant au-dessus de l'axe de rotation A selon la direction d'élévation.The lever 36 has a substantially V-shape comprising two branches 44 joining at a hinge point 46 articulated to the spar 16 about an axis of articulation substantially parallel to the axis of rotation A. More particularly, the point d hinge 46 is hinged to an upper portion 48 of the spar 16 projecting from the longitudinal end 26 of the spar 16 to the axle box 18. Upper part means a portion extending over the the axis of rotation A in the direction of elevation.

L'extrémité 40 de la bielle de transmission 34 est articulée à l'extrémité d'une des branches 44 du levier 36 autour d'un axe d'articulation sensiblement parallèle à l'axe de rotation A. Plus particulièrement, l'extrémité 40 est articulée à une branche 44 qui s'étend sensiblement selon la direction longitudinale vers la boîte d'essieu 18 à partir du point d'articulation 46.The end 40 of the transmission rod 34 is articulated to the end of one of the legs 44 of the lever 36 about an axis of articulation substantially parallel to the axis of rotation A. More particularly, the end 40 is articulated to a branch 44 which extends substantially in the longitudinal direction towards the axle box 18 from the point of articulation 46.

L'extrémité de l'autre branche 44 du levier 36 est articulée au plateau 30 autour d'un axe d'articulation sensiblement parallèle à l'axe de rotation A. Cette branche 44 articulée au plateau 30 s'étend sensiblement selon la direction d'élévation en saillie de la partie supérieure 48 du longeron 16 à partir du point d'articulation 46.The end of the other leg 44 of the lever 36 is articulated to the plate 30 about an axis of articulation substantially parallel to the axis of rotation A. This branch 44 hinged to the plate 30 extends substantially in the direction of rotation. protruding elevation of the upper portion 48 of the spar 16 from the pivot point 46.

Ainsi le plateau 30 s'étend sensiblement dans un plan contenant une direction d'élévation et une direction transversale.Thus the plate 30 extends substantially in a plane containing an elevation direction and a transverse direction.

La surface d'appui 32 s'étend sensiblement parallèlement au plateau 30 et est articulée au longeron 16 autour d'un axe d'articulation sensiblement parallèle à l'axe de rotation A. Plus particulièrement la surface d'appui 32 est articulée à un point d'articulation 50 s'étendant en saillie d'une partie intermédiaire du longeron 16 disposée au voisinage de l'extrémité longitudinale 26 du longeron.The bearing surface 32 extends substantially parallel to the plate 30 and is articulated to the spar 16 about an axis of articulation substantially parallel to the axis of rotation A. More particularly the bearing surface 32 is articulated to a hinge point 50 projecting from an intermediate portion of the spar 16 disposed in the vicinity of the longitudinal end 26 of the spar.

Ainsi, le plateau 30 et la surface d'appui 32 définissent entre eux un espace s'étendant sensiblement selon la direction longitudinale au droit et au-dessus d'une partie extrême longitudinale du longeron 16. L'élément élastique 28 est disposé dans cet espace de sorte que l'élément élastique 28 s'étend selon un axe sensiblement longitudinal. L'élément élastique 28 est par exemple formé par un ressort hélicoïdal dont l'axe s'étend sensiblement selon la direction longitudinale et dont les extrémités prennent appui sur le plateau 30 d'une part et sur la surface d'appui 32 d'autre part. La longueur de l'élément élastique 28 peut être choisie pour absorber efficacement les efforts entre l'essieu et le châssis en positionnant le point d'articulation 50 à une distance adaptée en conséquence de l'extrémité longitudinale 26 du longeron 16.Thus, the plate 30 and the bearing surface 32 define between them a space extending substantially in the longitudinal direction to the right and above a longitudinal end portion of the beam 16. The elastic element 28 is disposed in this embodiment. space so that the elastic member 28 extends along a substantially longitudinal axis. The elastic element 28 is for example formed by a helical spring whose axis extends substantially in the longitudinal direction and whose ends bear on the plate 30 on the one hand and on the bearing surface 32 on the other go. The length of the elastic element 28 can be chosen to effectively absorb the forces between the axle and the frame by positioning the hinge point 50 at a distance adapted accordingly to the longitudinal end 26 of the spar 16.

Le levier 36 forme un renvoi permettant de transformer un mouvement selon la direction d'élévation de la bielle de transmission 34, dû à un mouvement relatif du longeron 16 par rapport à la boîte d'essieu 18 selon la direction d'élévation, en un mouvement selon la direction longitudinale appliqué sur l'élément élastique 28. L'élément élastique 28 est ainsi apte à reprendre les efforts selon la direction d'élévation entre le longeron 16 et la boîte d'essieu 18 et ainsi remplir sa fonction de suspension.The lever 36 forms a return for transforming a movement in the direction of elevation of the transmission rod 34, due to a relative movement of the spar 16 relative to the axle box 18 in the direction of elevation, in one direction. movement in the longitudinal direction applied to the elastic member 28. The elastic member 28 is thus adapted to resume the forces in the direction of elevation between the spar 16 and the axle box 18 and thus fulfill its function of suspension.

Le positionnement de l'élément élastique 28 au-dessus du longeron et de sorte à ce qu'il s'étende selon une direction sensiblement longitudinale permet de réduire l'encombrement au droit de la boîte d'essieu. En effet, grâce à cet agencement, il n'est pas nécessaire, pour placer la surface d'appui en regard du plateau, de prévoir que le longeron passe au-dessus de la boîte d'essieu 18 comme c'est usuellement le cas. Ainsi, en comparant le bogie traditionnel représenté sur la figure 1 et le bogie selon l'invention, un espace compris entre 200 mm et 450 mm peut être gagné au-dessus de la boîte d'essieu 18.The positioning of the elastic element 28 above the spar and so that it extends in a substantially longitudinal direction reduces the space requirement to the right of the axle box. Indeed, thanks to this arrangement, it is not necessary, to place the bearing surface facing the plate, to provide that the beam passes over the axle box 18 as is usually the case. . So by comparing the traditional truck represented on the figure 1 and the bogie according to the invention, a space between 200 mm and 450 mm can be gained above the axle box 18.

Le dispositif de suspension primaire comprend en outre une bielle inférieure 52 et une bielle supérieure 54 joignant chacune l'extrémité longitudinale 26 du longeron 16 à la boîte d'essieu 18.The primary suspension device further comprises a lower connecting rod 52 and an upper connecting rod 54 each joining the longitudinal end 26 of the spar 16 to the axle box 18.

Les bielles inférieures 52 et supérieure 54 sont identiques, c'est-à-dire qu'elles présentent la même forme et la même longueur, et s'étendent parallèlement selon des directions sensiblement longitudinales lorsque le dispositif de suspension primaire n'est pas sollicité. Chaque bielle 52, 54 est articulée d'une part à l'une de ses extrémités à la boîte d'essieu 18 et d'autre part à son extrémité au longeron 16 autour d'axes d'articulation sensiblement parallèles à l'axe de rotation A.The lower rods 52 and 54 are identical, that is to say they have the same shape and the same length, and extend parallel in substantially longitudinal directions when the primary suspension device is not requested. . Each connecting rod 52, 54 is hinged at one of its ends to the axle box 18 and at its end to the spar 16 about axes of articulation substantially parallel to the axis of rotation. rotation A.

Plus particulièrement, la bielle inférieure 52 est articulée à la partie inférieure 42 de la boîte d'essieu 18 d'une part et à une partie inférieure 56 du longeron 16 d'autre part. Le point d'articulation inférieur 58 entre la bielle inférieure 52 et la partie inférieure 42 est décalé longitudinalement et selon la direction d'élévation par rapport à l'axe de rotation A. Ainsi, le point d'articulation inférieur 58 est décalé vers le longeron selon la direction longitudinale et est disposé sous l'axe de rotation A selon la direction d'élévation, comme visible sur la figure 2.More particularly, the lower link 52 is articulated to the lower portion 42 of the axle box 18 on the one hand and to a lower portion 56 of the spar 16 on the other hand. The lower articulation point 58 between the lower connecting rod 52 and the lower part 42 is shifted longitudinally and in the direction of elevation relative to the axis of rotation A. Thus, the lower articulation point 58 is shifted towards the longitudinal member and is arranged under the axis of rotation A in the direction of elevation, as visible on the figure 2 .

La bielle supérieure 54 est articulée à une partie supérieure 60 de la boîte d'essieu d'une part et à l'extrémité de la partie supérieure 48 du longeron 16 d'autre part. Le point d'articulation supérieur 62 entre la bielle supérieure 54 et la partie supérieure 60 est décalé longitudinalement et selon la direction d'élévation par rapport à l'axe de rotation A. Ainsi, le point d'articulation supérieur 62 est décalé vers l'extérieur du bogie selon la direction longitudinale et est disposé au-dessus de l'axe de rotation A selon la direction d'élévation, comme visible sur la figure 2.The upper link 54 is articulated to an upper portion 60 of the axle box on the one hand and to the end of the upper portion 48 of the spar 16 on the other hand. The upper articulation point 62 between the upper link 54 and the upper part 60 is shifted longitudinally and in the direction of elevation relative to the axis of rotation A. Thus, the upper articulation point 62 is shifted towards the outside the bogie in the longitudinal direction and is disposed above the axis of rotation A in the direction of elevation, as visible on the figure 2 .

Ainsi, les points d'articulation inférieur 58 et supérieur 62 sont disposés de part et d'autre de l'axe de rotation A selon la direction longitudinale et selon la direction d'élévation. Selon le mode de réalisation représenté sur la figure 2, les points d'articulation inférieur 58 et supérieur 62 et l'axe de rotation A sont alignés selon une droite inclinée par rapport à la direction longitudinale et la direction d'élévation.Thus, the lower articulation points 58 and 62 are located on either side of the axis of rotation A in the longitudinal direction and in the direction of elevation. According to the embodiment shown on the figure 2 , the lower articulation points 58 and 62 and the axis of rotation A are aligned along a line inclined with respect to the longitudinal direction and the elevation direction.

Les bielles inférieure 52 et supérieure 54 étant identiques, le point d'articulation inférieur 64 entre la bielle inférieure 52 et la partie inférieure 56 du longeron et le point d'articulation supérieur 66 entre la bielle supérieure 54 et la partie supérieure 48 du longeron sont également décalés l'un par rapport à l'autre selon la direction longitudinale et selon la direction d'élévation.The lower 52 and upper 54 connecting rods being identical, the lower articulation point 64 between the lower link 52 and the lower part 56 of the spar and the upper articulation point 66 between the upper link 54 and the upper part 48 of the spar are also offset relative to each other in the longitudinal direction and in the direction of elevation.

Ainsi, les points d'articulation 58, 62, 64, 66 forment un parallélogramme déformable selon le mouvement des bielles induit par le mouvement du longeron 16 par rapport à la boîte d'essieu 18. Un tel parallélogramme déformable permet de reprendre les efforts appliqués entre le châssis et la partie roulante du bogie selon la direction d'élévation et de reprendre le couple généré par le montage en porte à faux de l'élément élastique par rapport à l'axe de rotation A, c'est-à-dire le montage décalé selon la direction longitudinale et selon la direction d'élévation de l'élément élastique 28 par rapport à l'axe de rotation A.Thus, the articulation points 58, 62, 64, 66 form a deformable parallelogram according to the movement of the connecting rods induced by the movement of the spar 16 relative to the axle box 18. Such a deformable parallelogram makes it possible to take up the forces applied. between the frame and the rolling part of the bogie according to the elevation direction and resume the torque generated by the cantilevered mounting of the elastic member relative to the axis of rotation A, that is to say the offset mounting in the longitudinal direction and in the direction of elevation of the elastic member 28 relative to the axis of rotation A.

Dans le bogie 10 décrit ci-dessus, l'encombrement du châssis 12 selon la direction d'élévation est réduit, puisque la hauteur h' à laquelle s'étend le longeron 16 peut être inférieure à la hauteur h de la roue, comme cela a été décrit précédemment, tout en conservant un dispositif d'articulation primaire 20 efficace apte à suspendre le châssis 12 par rapport à la boîte d'essieu 18.In the bogie 10 described above, the bulk of the frame 12 in the direction of elevation is reduced, since the height h 'at which the spar 16 extends may be smaller than the height h of the wheel, as shown in FIG. has been previously described, while maintaining an effective primary articulation device 20 able to suspend the frame 12 with respect to the axle box 18.

Un tel bogie est particulièrement adapté pour des véhicules ferroviaires à plancher bas, dans lesquels on souhaite que le plancher bas s'étende également au droit du bogie sans limiter le volume disponible au droit du volume. C'est par exemple le cas dans un véhicule ferroviaire à deux étages dans lequel le passage d'interconnexion joignant deux voitures s'étendant au-dessus du bogie comprend également deux étages.Such a bogie is particularly suitable for low floor rail vehicles, in which it is desired that the low floor also extends to the right of the bogie without limiting the available volume volume volume. This is for example the case in a two-stage railway vehicle in which the interconnection passage connecting two cars extending above the bogie also comprises two floors.

Dans un tel véhicule ferroviaire, le passage d'interconnexion comprend un plancher inférieur reliant les planchers inférieurs de deux voitures adjacentes et un plancher supérieur reliant les planchers supérieurs de ces deux voitures, le plancher inférieur passant au-dessus du bogie. Dans la mesure où les longerons 16 du châssis s'étendent à une hauteur réduite, la hauteur du plancher inférieur du passage d'interconnexion peut également être réduite, ce qui permet d'augmenter l'espace disponible dans le passage d'interconnexion.In such a railway vehicle, the interconnecting passage comprises a lower floor connecting the lower floors of two adjacent cars and an upper floor connecting the upper floors of these two cars, the lower floor passing over the bogie. Since frame members 16 extend at a reduced height, the height of the lower floor of the interconnect passage may also be reduced, thereby increasing the available space in the interconnect passage.

Un tel bogie peut également être utilisé lorsqu'il s'étend directement sous une voiture au plancher inférieur abaissé.Such a truck can also be used when it extends directly under a car lowered lower floor.

Claims (10)

  1. Railway vehicle bogie (10) comprising a chassis (12) comprising at least one stringer (16) extending in a longitudinal direction and at least one wheel (14), wherein the wheel (14) is mounted on an axle box (18) and is rotatable relative to the axle box (18) about an axis of rotation (A) that is substantially perpendicular to the longitudinal direction, wherein the axle box (18) is attached to the stringer (16) by a primary suspension device (20) comprising an elastic element (28) fixed, on the one hand, to the stringer and, on the other hand, to the axle box and arranged to allow play in an elevation direction of the chassis (12) with respect to the axle box (18) and the wheel (14), wherein the elevation direction is substantially perpendicular to the longitudinal direction and to the axis of rotation (A), characterized in that the primary suspension device (20) comprises at least one transmission rod (34) articulated, on the one hand, with the axle box (18) and, on the other hand, with a lever (36) articulated to the stringer (16), wherein the lever (36) is further articulated to the elastic element (28), so that the elastic element (28) is attached to the axle box (18) via the lever (36) and the transmission rod (34).
  2. Bogie according to claim 1, wherein the transmission rod (34) and the lever (36) are so arranged that the elastic element (28) extends in a substantially longitudinal direction to the right of an extreme longitudinal part of the stringer (16).
  3. Bogie according to claim 1 or 2, wherein the transmission rod (34) extends substantially in the elevation direction.
  4. Bogie according to any one of the claims 1 to 3, wherein the transmission rod (34) is arranged between the axis of rotation (A) and a longitudinal end (26) of the stringer (16) in the longitudinal direction.
  5. Bogie according to any one of the claims 1 to 4, wherein the axes of articulation of the transmission rod (34) and the lever (36) are parallel to the axis of rotation (A).
  6. Bogie according to any one of the claims 1 to 5, wherein the primary suspension device (20) further comprises a lower link (52) articulated, on the one hand, with a lower articulation point (64) of the stringer (16) and, on the other hand, to a lower articulation point (58) of the axle box (18), and an upper rod (54) articulated, on the one hand, to an upper articulation point (66) of the stringer (16) and, on the other hand, with an upper articulation point (62) of the axle box (18), wherein the lower articulation point (64, 58) and the upper articulation point (66, 62) of the stringer (16), respectively of the axle box (18), extend one below the other in the elevation direction.
  7. Bogie according to claim 6, wherein the lower articulation point (58) and the upper articulation point (62) of the axle box (18) are arranged on either side of the axis of rotation (A) according to the elevation direction.
  8. Bogie according to claim 6 or 7, wherein the lower articulation point (58) and the upper articulation point (62) of the axle box (18) are arranged on either side of the axis of rotation (A) in the longitudinal direction.
  9. Bogie according to any one of the claims 6 to 8, wherein the lower link (52) and the upper link (54) are of the same length.
  10. Bogie according to any one of the claims 1 to 9, wherein the stringer (16) extends to a height (h'), measured in the elevation direction, and less than the height (h) of the wheel (14).
EP17162240.0A 2016-03-25 2017-03-22 Railway vehicle bogie comprising an offset primary suspension device Active EP3222485B1 (en)

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FR1652639A FR3049254B1 (en) 2016-03-25 2016-03-25 RAIL VEHICLE BOGY COMPRISING A DECAL PRIMARY SUSPENSION DEVICE

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ES (1) ES2712125T3 (en)
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CN112644548B (en) * 2019-10-10 2022-07-26 中车唐山机车车辆有限公司 Framework of bogie
CN114312889B (en) * 2021-11-22 2023-07-07 中车株洲电力机车有限公司 Steering frame
CN114750800B (en) * 2022-05-25 2023-12-15 中铁磁浮交通投资建设有限公司 Magnetomotive running mechanism and medium-short distance magnetomotive material transportation engineering vehicle

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FR2970457B1 (en) * 2011-01-17 2013-02-15 Alstom Transport Sa BOGIE OF SUSPENDED RAIL VEHICLE
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RU2573100C1 (en) * 2014-07-18 2016-01-20 Акционерное общество "Центральное конструкторское бюро транспортного машиностроения" (АО "ЦКБ ТМ") Railway vehicle bogie

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None *

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Publication number Publication date
FR3049254A1 (en) 2017-09-29
EP3222485A1 (en) 2017-09-27
PL3222485T3 (en) 2019-05-31
RU2724567C2 (en) 2020-06-23
FR3049254B1 (en) 2018-04-20
RU2017109680A3 (en) 2020-05-13
ES2712125T3 (en) 2019-05-09
RU2017109680A (en) 2018-09-24

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