EP0072328B1 - Bogie with orientatable wheel axles - Google Patents

Bogie with orientatable wheel axles Download PDF

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Publication number
EP0072328B1
EP0072328B1 EP82401490A EP82401490A EP0072328B1 EP 0072328 B1 EP0072328 B1 EP 0072328B1 EP 82401490 A EP82401490 A EP 82401490A EP 82401490 A EP82401490 A EP 82401490A EP 0072328 B1 EP0072328 B1 EP 0072328B1
Authority
EP
European Patent Office
Prior art keywords
bogie
axle
chassis
axles
boxes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82401490A
Other languages
German (de)
French (fr)
Other versions
EP0072328A1 (en
Inventor
Jacques Bevand
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
M T E SA Ste
Original Assignee
M T E SA Ste
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR8115422A external-priority patent/FR2510962B1/en
Application filed by M T E SA Ste filed Critical M T E SA Ste
Publication of EP0072328A1 publication Critical patent/EP0072328A1/en
Application granted granted Critical
Publication of EP0072328B1 publication Critical patent/EP0072328B1/en
Expired legal-status Critical Current

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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
    • B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
    • B61F5/44—Adjustment controlled by movements of vehicle body
    • 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
    • B61F3/04—Types of bogies with more than one axle with driven axles or wheels
    • 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
    • B61F5/305—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating rubber springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
    • B61F5/386—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles fluid actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/50—Other details
    • B61F5/52—Bogie frames

Definitions

  • the present invention relates to a bogie with steerable axles corresponding to the preamble of claim 1 and known from DE-A-2624719.
  • Certain rail vehicles such as metros and trams are required to use curves with very small radii of curvature.
  • the orientation of the axles limits the dynamic stresses applied, transversely, on the wheel flanges. It limits the stresses and the wear of the tubes as well as the noise caused by the contact of the tubes on the rails.
  • the present invention relates to a bogie provided with an axle orientation mechanism which does not encumber the center of the bogie and in which the chassis rests on the axle boxes by elastic elements which, while allowing orientation axles and their return provide the primary suspension.
  • This arrangement ensures effective filtering of vibrations between the bogie chassis and the axle boxes, this advantage being especially noticeable in the low frequency range.
  • the axle orientation mechanism in some cases ensures the transmission of traction and braking forces between the axles and the bogie chassis.
  • the bogie according to the invention is characterized in that the chassis is supported on each axle box by two elastic support elements made at least partially of elastomer and mounted respectively above and below the box d 'axle.
  • Each elastic support element consists of two elastomer blocks arranged in a chevron symmetrically with respect to a longitudinal plane perpendicular to the axis of the axle and centered on the vertical plane passing through this axle axis.
  • Each articulated system consists of a control lever pivotally mounted on the chassis and articulated two connecting bars each coupled by an articulation to an axle box.
  • the bogie comprises a bogie frame 1 which is carried by two axles 2 each consisting of two wheels joined by an axle. Each axle is fitted with two axle boxes 3. The vertical axis of synchronization and orientation of each axle, located at equal distance from the wheels, is marked 22.
  • the vehicle body rests on the bogie via a pivot ring 71 which is coaxial with the central vertical axis 13 of the bogie.
  • This crown consists of two rings which can pivot by means of bearings, one relative to the other, on the central axis 13, one of the rings being secured to the body, the other ring being secured to a cross member 72 which bears at its ends on the bogie frame by means of two springs 73 forming the secondary suspension.
  • the bogie chassis is connected to each axle box by two elastic support elements 4, 8 mounted one below the other so that one, 4, is located above the box d axle and the other, 8, is located below.
  • Each support element 4 or 8 is arranged so as to be symmetrical relative to the vertical plane passing through the axis of revolution 23 of the axle and relative to a longitudinal plane perpendicular to this same axis.
  • the bogie frame 1 forms on each side of each axle box two branches on which the elastic support elements 4 and 8 are supported.
  • Each elastic support element 4 or 8 consists of two elastic blocks 41 -42 or 81-82 made at least partially of elastomer and each mounted between a support face 311-312 or 321-322 of an internal frame 31 or 32 secured to the axle box and a bearing face 111-112 or 121-122 of an external frame 11 or 12 secured to the chassis.
  • These bearing faces are inclined so as to form V with respect to a longitudinal plane which is perpendicular to the axis of revolution 23 of the axle.
  • the bearing faces 111-112 or 121-122 are symmetrical with respect to this longitudinal plane, as are the bearing faces 311-312 or 321 -322.
  • the blocks of the same support element are arranged so as to form a truncated chevron symmetrically with respect to the abovementioned longitudinal plane.
  • the fictitious edges of the bearing faces 111-112 or 121-122 and 311-312 or 321-322 are horizontal and contained in the plane of symmetry which is perpendicular to the axis of revolution 23 of the axle.
  • the centers of blocks 41-42 and 81-82 are centered in the vertical plane passing through 23. This arrangement in V or chevrons, ensures the radial or transverse guidance while allowing the autor orientation of the axis 22.
  • Each elastic block 41 or 42 has a one-piece or laminated structure - sandwich type - which is produced by elastomer plates separated by metallic intermediate plates, these plates, arranged alternately, being bonded together.
  • the blocks are arranged so as to provide a space 43 between the outer frame 11 and the inner frame 31.
  • An elastomer stop 44 is adhered to the frame 11 on the side of the frame 31 This stop ensures the limitation of the vertical clearance of the two frames relative to each other.
  • Each element also includes stops limiting the rotational movement of the autor axle of the axis 22.
  • the orientation of two axles is controlled by two parts of the articulated system which each connect two axle boxes 3 located on the same side of the median longitudinal plane of the bogie. Each part imposes on the two associated axle boxes angular rotations of opposite directions autor axes of symmetry. In the curve, one of the axles is rotated clockwise while the other axle is rotated counterclockwise, the axes thus becoming convergent.
  • the two parts impose on the two axle boxes 3 situated on the same side of the longitudinal axis of the bogie equal and opposite displacements and impose on the two axle boxes 3 of the same axle equally and opposite displacements.
  • Each part comprises a control lever 5 which is articulated with an axis 51 on the bogie frame 1.
  • the two levers 5 are mounted on either side of the vertical vertical plane passing through the axes 22.
  • Each lever 5 is connected to the two axle boxes 3 by link bars 31.
  • Each link bar 31 is coupled to an axle box 3 by a joint 31 located in the horizontal plane passing through the axle axes and by an articulation 52 to a lever 5.
  • each control lever 5 autor of its axis 51 is slaved to the pivoting movement of the body autor of the central axis 12.
  • the body has two operating points 61 which describe a circle, autor of the axis central 12, when the body pivots.
  • Each maneuvering point 61 of the body is coupled to the maneuver 53 of a control lever 5 by means of a link allowing the vertical movements of the body-bogie chassis and authorizing the rotations of the body and the control lever autor of their respective axes of rotation.
  • Each link coupling an operating point 61 of the body and an operating point 53 of the control lever is constituted by a connecting rod 6, the operating points 61 and 53 being ball joints which allow the relative vertical deflections of the body and bogie.
  • Each control lever 5 oscillates autor an axis 51 substantially horizontal, in a substantially vertical plane.
  • the operating points 61 and 53 and the connecting rods 6 are then positioned substantially at the level of the pivoting crown and at a short distance from the body. Because of the springs 73 of the secondary suspension, the control levers 5 are offset from the transverse plane passing through the axis 13, the bars 31 therefore having unequal lengths.
  • the motor bogie which is represented in the figures comprises two motors which are suspended on the chassis and each drive an axle.
  • the parallelism of the two axles is given by the elastic elements 4 and 8 by the control levers 5 which are coupled to the body.
  • the first axle 2 approaching a curve receives a lateral stress coming from the external rail which directs the bogie according to the position perpendicular to the longitudinal axis of the track.
  • the elastic elements 4 and 8 undergo, in the longitudinal plane, displacements which depend on the radius of the curve taken by the bogie.
  • the elastic blocks are precompressed and work in shear.
  • the structure of elastic elements 4 allows the angular pivoting of each autor axle of its vertical axis 22 while ensuring transverse guidance relative to the bogie chassis.
  • the rotation of the body with respect to the first bogie which engages in the curve also implies a rotation of the body with respect to the next bogie.
  • This relative rotation controls the levers 5 of the next bogie and therefore the orientation of the axles of this bogie.
  • the problem of entering the curve is made easier by the fact that the connection between the line and the circular portion of the track takes place via a parabolic portion.
  • the elastic elements 4 and 8 exert a restoring torque which tends to reposition the axle in the transverse position.
  • the rotation of the body to its initial position along the longitudinal axis of the bogie brings the control levers 5 back to their initial positions.
  • the traction and braking force between the axles the bogie chassis is transmitted, via the bars 31, to the control levers 5 which are linked to the bogie chassis by the joints 51.
  • the traction or braking applied to the bogie chassis is transmitted to the body via the swivel ring.
  • the articulated system is designed to simultaneously support the traction or braking forces and the orientation efforts of the axles. In curves, the orientation forces of the axles in the orientation mechanism come into play, in addition to any traction or braking forces. At this time these orientation efforts occur in proportion to the angles at which the axles have pivoted.
  • the first car that enters a curve drives the second car by its hitch, gradually orienting its first and second bogie and so on.
  • the bogie could comprise three axles, the median axle being guided by an axis fixed relative to the bogie chassis and the two outer axles being oriented as in the embodiments described above.
  • the upper 4 and lower 8 elastic elements can be produced with elastic blocks of different or identical compositions and dimensions.
  • the bogie chassis could include closed frames each surrounding an axle box and serving to support elements 4 and 8.
  • axle boxes instead of being placed outside the wheels, could be placed between the wheels, the side members of the bogie chassis then extending between the wheels.

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

Description

La présente invention se rapporte à un bogie à essieux orientables correspondant au préambule de la revendication 1 et connu du DE-A-2624719.The present invention relates to a bogie with steerable axles corresponding to the preamble of claim 1 and known from DE-A-2624719.

Certains véhicules ferroviaires tels que les métros et les tramways sont amenés à emprunter des courbes à très faibles rayons de courbure. L'orientation des essieux limite les sollicitations dynamiques appliquées, transversalement, sur les boudins de roues. Elle limite les contraintes et l'usure des boudins ainsi que le bruit provoqué par le contact des boudins sur les rails.Certain rail vehicles such as metros and trams are required to use curves with very small radii of curvature. The orientation of the axles limits the dynamic stresses applied, transversely, on the wheel flanges. It limits the stresses and the wear of the tubes as well as the noise caused by the contact of the tubes on the rails.

La présente invention a pour objet un bogie pourvu d'un mécanisme d'orientation des essieux qui n'encombre pas le centre du bogie et dans lequel le châssis repose sur les boîtes d'essieu par des éléments élastiques qui tout en permettant l'orientation des essieux et leur rappel assurent la suspension primaire. Cet agencement permet d'assurer un filtrage efficace des vibrations entre le châssis de bogie et les boîtes d'essieu, cet avantage étant surtout sensible dans le domaine des fréquences basses. Le mécanisme d'orientation des essieux assure dans certains cas la transmission des efforts de traction et de freinage entre les essieux et le châssis de bogie.The present invention relates to a bogie provided with an axle orientation mechanism which does not encumber the center of the bogie and in which the chassis rests on the axle boxes by elastic elements which, while allowing orientation axles and their return provide the primary suspension. This arrangement ensures effective filtering of vibrations between the bogie chassis and the axle boxes, this advantage being especially noticeable in the low frequency range. The axle orientation mechanism in some cases ensures the transmission of traction and braking forces between the axles and the bogie chassis.

Le bogie selon l'invention est caractérisé par le fait que le châssis s'appuie sur chaque boîte d'essieu par deux éléments d'appui élastiques constitués au moins partiellement d'élastomère et montés respectivement au-dessus et au dessous de la boîte d'essieu.The bogie according to the invention is characterized in that the chassis is supported on each axle box by two elastic support elements made at least partially of elastomer and mounted respectively above and below the box d 'axle.

On connaît bien du brevet CH-A-324972 un chassis de véhicule ferroviaire porté par des essieux pourvus de boîtes d'essieu. Ledit chassis sappuie sur chaque boîte d'essieu par l'intermédiaire de deux éléments d'appui élastiques constitués au moins partiellement d'élastomère et montés au-dessus et au-dessous de la boîte. Mais ce dispositif connu ne se rapporte pas à un essieu orientable.We know from patent CH-A-324972 a chassis for a railway vehicle carried by axles provided with axle boxes. Said chassis is supported on each axle box by means of two elastic support elements made up at least partially of elastomer and mounted above and below the box. However, this known device does not relate to a steerable axle.

Chaque élément d'appui élastique est constitué de deux blocs en élastomère disposés en chevron symmétriquement par rapport à un plan longitudinal perpendiculaire à l'axe de l'essieu et centrés sur le plan vertical passant par cet axe d'essieu.Each elastic support element consists of two elastomer blocks arranged in a chevron symmetrically with respect to a longitudinal plane perpendicular to the axis of the axle and centered on the vertical plane passing through this axle axis.

Chaque système articulé se compose d'un levier de commande monté pivotant sur le châssis et articulé deux barres de liaison attelées chacune par une articulation à une boîte d'essieu.Each articulated system consists of a control lever pivotally mounted on the chassis and articulated two connecting bars each coupled by an articulation to an axle box.

L'invention va maintenant être décrite avec plus de détails en se référant à un mode de réalisation donné à titre d'exemple et représenté par les dessins annexés.The invention will now be described in more detail with reference to an embodiment given by way of example and represented by the accompanying drawings.

  • La figure 1 représente en vue de dessus le bogie selon l'invention.Figure 1 shows a top view of the bogie according to the invention.
  • La figure 2 représente une vue en élévation du bogie de la figure 1.FIG. 2 represents an elevation view of the bogie of FIG. 1.
  • La figure 3 représente une vue de gauche avec une coupe partielle selon III-III des figures 1 et 2.FIG. 3 represents a view on the left with a partial section along III-III of FIGS. 1 and 2.
  • La figure 4 est une vue de détail, selon III-III, montrant les éléments d'appui élastiques.Figure 4 is a detail view, according to III-III, showing the elastic support elements.
  • La figure 5 est une vue en coupe, selon V V, des éléments d'appui élastiques.Figure 5 is a sectional view, along V V, of the elastic support elements.

En se référant aux figures 1 à 5, le bogie comporte un châssis de bogie 1 qui est porté par deux essieux 2 constitués chacun de deux roues réunies par un axe. Chaque essieu est équipé de deux boîtes d'essieu 3. L'axe vertical de synimé- trie et d'orientation de chaque essieu, situé à égale distance des roues, est repéré 22.Referring to Figures 1 to 5, the bogie comprises a bogie frame 1 which is carried by two axles 2 each consisting of two wheels joined by an axle. Each axle is fitted with two axle boxes 3. The vertical axis of synchronization and orientation of each axle, located at equal distance from the wheels, is marked 22.

La caisse du véhicule repose sur le bogie par l'intermédiaire d'une couronne de pivotement 71 qui est coaxiale avec l'axe vertical central 13 du bogie. Cette couronne se compose de deux an neaux qui peuvent pivoter au moyen de roulements, l'un par rapport à l'autre, autor de l'axe central 13, l'un des anneaux étant solidaire de la caisse, l'autre anneau étant solidaire d'une traverse 72 qui s'appuie à ses extrémités sur le châssis de bogie par l'intermédiaire de deux ressorts 73 formant la suspension secondaire.The vehicle body rests on the bogie via a pivot ring 71 which is coaxial with the central vertical axis 13 of the bogie. This crown consists of two rings which can pivot by means of bearings, one relative to the other, on the central axis 13, one of the rings being secured to the body, the other ring being secured to a cross member 72 which bears at its ends on the bogie frame by means of two springs 73 forming the secondary suspension.

Le châssis de bogie est relié à chaque boîte d'essieu par deux éléments d'appui élastiques 4, 8 montés l'un au dessous de l'autre de manière que l'un, 4, soit situé au-dessus de la boîte d'essieu et l'autre, 8, soit situé au-dessous. Chaque élément d'appui 4 ou 8 est agencé de manière à être symmétrique par rapport au plan vertical passant par l'axe de révolution 23 de l'essieu et par rapport à un plan longitudinal perpendiculaire à ce même axe.The bogie chassis is connected to each axle box by two elastic support elements 4, 8 mounted one below the other so that one, 4, is located above the box d axle and the other, 8, is located below. Each support element 4 or 8 is arranged so as to be symmetrical relative to the vertical plane passing through the axis of revolution 23 of the axle and relative to a longitudinal plane perpendicular to this same axis.

Le châssis de bogie 1 forme de part et d'autre de chaque boîte d'essieu deux branches sur les quelles s'appuient les éléments d'appui élastiques 4 et 8.The bogie frame 1 forms on each side of each axle box two branches on which the elastic support elements 4 and 8 are supported.

Chaque élément d'appui élastique 4 ou 8 se compose de deux blocs élastiques 41 -42 ou 81-82 réalisés au moins partiellement en élastomère et montés chacun entre une face d'appui 311-312 ou 321-322 d'une armature intérieure 31 ou 32 solidaire de la boîte d'essieu et une face d'appui 111-112 ou 121-122 d'une armature ex térieure 11 ou 12 solidaire du châssis. Ces faces d'appui sont inclinées de manière à former des V par rapport à un plan longitudinal qui est perpendiculaire à l'axe de révolution 23 de l'essieu. Les faces d'appui 111-112 ou 121-122 sont symmé- triques par rapport à ce plan longitudinal de même que les faces d'appui 311-312 ou 321 -322. Les blocs d'un même élément d'appui sont disposés de manière à former un chevron tronqué symmétriquement par rapport au plan longitudinal précité. Les arêtes-fictives des faces d'appui 111-112 ou 121-122 et 311-312 ou 321-322 sont horizontales et contenues dans le plan de symmétrie qui est perpendiculaire à l'axe de révolution 23 de l'essieu. Les centres des blocs 41-42 et 81-82 sont centrés dans le plan vertical passant par 23. Cet agencement en V ou chevrons, assure le guidage radial ou transversal tout en permettant l'orientation autor de l'axe 22. Chaque bloc élastique 41 ou 42 a une structure monobloc ou feuilletée - type sandwich - qui est réalisée par des plaques en élastomère séparées par des plaques intermédiaires métalliques, ces plaques, disposées alternativement, étant adhérisées ensemble.Each elastic support element 4 or 8 consists of two elastic blocks 41 -42 or 81-82 made at least partially of elastomer and each mounted between a support face 311-312 or 321-322 of an internal frame 31 or 32 secured to the axle box and a bearing face 111-112 or 121-122 of an external frame 11 or 12 secured to the chassis. These bearing faces are inclined so as to form V with respect to a longitudinal plane which is perpendicular to the axis of revolution 23 of the axle. The bearing faces 111-112 or 121-122 are symmetrical with respect to this longitudinal plane, as are the bearing faces 311-312 or 321 -322. The blocks of the same support element are arranged so as to form a truncated chevron symmetrically with respect to the abovementioned longitudinal plane. The fictitious edges of the bearing faces 111-112 or 121-122 and 311-312 or 321-322 are horizontal and contained in the plane of symmetry which is perpendicular to the axis of revolution 23 of the axle. The centers of blocks 41-42 and 81-82 are centered in the vertical plane passing through 23. This arrangement in V or chevrons, ensures the radial or transverse guidance while allowing the autor orientation of the axis 22. Each elastic block 41 or 42 has a one-piece or laminated structure - sandwich type - which is produced by elastomer plates separated by metallic intermediate plates, these plates, arranged alternately, being bonded together.

Sur l'élément élastique supérieur 4 les blocs sont disposés de manière à ménager un espace 43 entre l'armature extérieure 11 et l'armature inteneure 31. Une butée 44 en élastomère est adhérisée sur l'armature 11 du côté de l'armature 31. Cette butée assure la limitation du débattement vertical des deux armatures l'une par rapport à l'autre.On the upper elastic element 4, the blocks are arranged so as to provide a space 43 between the outer frame 11 and the inner frame 31. An elastomer stop 44 is adhered to the frame 11 on the side of the frame 31 This stop ensures the limitation of the vertical clearance of the two frames relative to each other.

Chaque élément comporte par ailleurs des butées limitant le débattement en rotation de l'essieu autor de l'axe 22.Each element also includes stops limiting the rotational movement of the autor axle of the axis 22.

L'orientation de deux essieux est contrôlée par deux parties du système articulés qui relient chacune deux boîtes d'essieu 3 situées d'un même côté du plan longitudinal médian du bogie. Chaque partie impose aux deux boîtes d'essieu associées des rotations angulaires de sens contraires autor des axes de symétrie. En courbe, l'un des essieux subit une rotation dans le sens des aiguilles d'une montre tandis que l'autre essieu subit une rotation dans le sens inverse des aiguilles d'une montre, les axes devenant ainsi convergents. Les deux parties imposent aux deux boîtes d'essieu 3 situées d'un même côté de l'axe longitudinal du bogie des déplacements égaux et opposés et imposent aux deux boites d'essieu 3 d'un même essieu des déplacements également égaux et opposés.The orientation of two axles is controlled by two parts of the articulated system which each connect two axle boxes 3 located on the same side of the median longitudinal plane of the bogie. Each part imposes on the two associated axle boxes angular rotations of opposite directions autor axes of symmetry. In the curve, one of the axles is rotated clockwise while the other axle is rotated counterclockwise, the axes thus becoming convergent. The two parts impose on the two axle boxes 3 situated on the same side of the longitudinal axis of the bogie equal and opposite displacements and impose on the two axle boxes 3 of the same axle equally and opposite displacements.

Chaque partie comporte un levier de commande 5 qui est articulé autor d'un axe 51 sur le châssis de bogie 1. Les deux leviers 5 sont montés de part et d'autre du plan vertical médian passant par les axes 22.Each part comprises a control lever 5 which is articulated with an axis 51 on the bogie frame 1. The two levers 5 are mounted on either side of the vertical vertical plane passing through the axes 22.

Chaque levier 5 est relié aux deux boîtes d'essieu 3 par des barres de liaison 31. Chaque barre de liaison 31 est attelée à une boîte d'essieu 3 par une articulation 31 située dans le plan horizontal passant par les axes d'essieu et par une articulation 52 à un levier 5.Each lever 5 is connected to the two axle boxes 3 by link bars 31. Each link bar 31 is coupled to an axle box 3 by a joint 31 located in the horizontal plane passing through the axle axes and by an articulation 52 to a lever 5.

Le mouvement de pivotement de chaque levier de commande 5 autor de son axe 51 est asservi au mouvement de pivotement de la caisse autor de l'axe central 12. La caisse comporte deux points de manoeuvre 61 qui décrivent un cercle, autor de l'axe central 12, lorsque la caisse pivote. Chaque point de manoeuvre 61 de la caisse est accouple à de manoeuvre 53 d'un levier de commande 5 par l'intermédiaire d'une liaison permettant les débattements verticaux caisse-châssis de bogie et autorisant les rotations de la caisse et du levier de commande autor de leurs axes de rotation respectifs. Chaque liaison accouplant un point de manoeuvre 61 de la caisse et un point de manoeuvre 53 du levier de commande est constituée par une bielle 6, les points de manoeuvre 61 et 53 étant des articulations à rotule qui permettent les débattements verticaux relatifs de la caisse et du bogie.The pivoting movement of each control lever 5 autor of its axis 51 is slaved to the pivoting movement of the body autor of the central axis 12. The body has two operating points 61 which describe a circle, autor of the axis central 12, when the body pivots. Each maneuvering point 61 of the body is coupled to the maneuver 53 of a control lever 5 by means of a link allowing the vertical movements of the body-bogie chassis and authorizing the rotations of the body and the control lever autor of their respective axes of rotation. Each link coupling an operating point 61 of the body and an operating point 53 of the control lever is constituted by a connecting rod 6, the operating points 61 and 53 being ball joints which allow the relative vertical deflections of the body and bogie.

Chaque levier de commande 5 oscille autor d'un axe 51 sensiblement horizontal, dans un plan sensiblement vertical. Les points de manoeuvre 61 et 53 et les bielles 6 sont alors positionnés sensiblement au niveau de la couronne de pivotement et à faible distance de la caisse. A cause des ressorts 73 de la suspension secondaire, les leviers de commande 5 sont décalés du plan transversal passant par l'axe 13, les barres 31 ayant de ce fait des longueurs inégales.Each control lever 5 oscillates autor an axis 51 substantially horizontal, in a substantially vertical plane. The operating points 61 and 53 and the connecting rods 6 are then positioned substantially at the level of the pivoting crown and at a short distance from the body. Because of the springs 73 of the secondary suspension, the control levers 5 are offset from the transverse plane passing through the axis 13, the bars 31 therefore having unequal lengths.

Le bogie moteur qui est représenté sur les figures comporte deux moteurs qui sont suspendus sur le châssis et entrainent chacun un essieu.The motor bogie which is represented in the figures comprises two motors which are suspended on the chassis and each drive an axle.

Le fonctionnement du bogie va maintenant être expliqué.The operation of the bogie will now be explained.

En ligne droite, le parallélisme des deux essieux est donné par les éléments élastiques 4 et 8 par les leviers de commande 5 qui sont accouplés à la caisse. Le premier essieu 2 abordant une courbe reçoit une sollicitation latérale provenant du rail extérieur qui oriente le bogie selon la position perpendiculaire à l'axe longitudinal de la voie. Au cours de la rotation, les éléments élastiques 4 et 8 subissent, dans le plan longitudinal, des déplacements qui dépendent du rayon de la courbe empruntée par le bogie. Les blocs élastiques sont précomprimés et travaillent au cissail- lement. La structure de éléments élastiques 4 permet le pivotement angulaire de chaque essieu autor de son axe vertical 22 tout en assurant un guidage transversal par rapport au châssis de bogie. En abordant la courbe de bogie prend la position normale à la voie ce qui entraine automatiquement une rotation relative du châssis de bogie par rapport à la caisse. Cette rotation se traduit par une rotation des points de manoeuvre 61 autor de l'axe 13, par rapport au bogie. Cette rotation des points de manoeuvre 61 provoque le pivotement des leviers de commande 5 autor de leurs axes 51 ce qui entraine le rapprochement relatif des boites d'essieu 3 situées du côté du rail intérieur et l'éloignement relatif des boites d'essieu 3 situées du côté du rail extérieur. Les axes des essieux convergent vers l'intérieur de la courbe.In a straight line, the parallelism of the two axles is given by the elastic elements 4 and 8 by the control levers 5 which are coupled to the body. The first axle 2 approaching a curve receives a lateral stress coming from the external rail which directs the bogie according to the position perpendicular to the longitudinal axis of the track. During rotation, the elastic elements 4 and 8 undergo, in the longitudinal plane, displacements which depend on the radius of the curve taken by the bogie. The elastic blocks are precompressed and work in shear. The structure of elastic elements 4 allows the angular pivoting of each autor axle of its vertical axis 22 while ensuring transverse guidance relative to the bogie chassis. When approaching the bogie curve takes the normal position to the track which automatically causes a relative rotation of the bogie chassis relative to the body. This rotation results in a rotation of the maneuvering points 61 autor of the axis 13, relative to the bogie. This rotation of the maneuvering points 61 causes the pivoting of the control levers 5 autor of their axes 51 which results in the relative approximation of the axle boxes 3 located on the side of the inner rail and the relative separation of the axle boxes 3 located on the side of the outer rail. The axes of the axles converge towards the inside of the curve.

La rotation de la caisse par rapport au premier bogie qui s'engage dans la courbe implique également une rotation de la caisse par rapport au bogie suivant. Cette rotation relative commande les leviers 5 du bogie suivant et par conséquent l'orientation des essieux de ce bogie. Le problème de l'entrée en courbe se trouve facilité par le fait que le raccordement entre la ligne et la portion circulaire de la voie s'effectue par l'intermédiaire d'une portion parabolique.The rotation of the body with respect to the first bogie which engages in the curve also implies a rotation of the body with respect to the next bogie. This relative rotation controls the levers 5 of the next bogie and therefore the orientation of the axles of this bogie. The problem of entering the curve is made easier by the fact that the connection between the line and the circular portion of the track takes place via a parabolic portion.

A la sortie de la courbe les éléments élastiques 4 et 8 exercent un couple de rappel qui tend à repositionner l'essieu en position transversale. La rotation de la caisse vers sa position initiale selon l'axe longitudinal du bogie ramène les leviers de commande 5 vers leurs positions initiales.At the end of the curve, the elastic elements 4 and 8 exert a restoring torque which tends to reposition the axle in the transverse position. The rotation of the body to its initial position along the longitudinal axis of the bogie brings the control levers 5 back to their initial positions.

L'effort de traction et de freinage entre les essieux le châssis de bogie est transmis, par l'intermédiaire des barres 31, aux leviers de commande 5 qui sont liés au châssis de bogie par les articulations 51. L'effort de traction ou de freinage appliqué au châssis de bogie est transmis à la caisse par l'intermédiaire de la couronne de pivotement. Le système articulé est prévu pour supporter simultanément les efforts de traction ou de freinage et les efforts d'orientation des essieux. En courbe, les efforts d'orientation des essieux dans le mécanisme d'orientation entrent en jeu, en plus des efforts éventuels de traction ou de freinage. A ce moment là ces efforts d'orientation interviennent au prorata des angles suivant lesquels les essieux ont pivoté.The traction and braking force between the axles the bogie chassis is transmitted, via the bars 31, to the control levers 5 which are linked to the bogie chassis by the joints 51. The traction or braking applied to the bogie chassis is transmitted to the body via the swivel ring. The articulated system is designed to simultaneously support the traction or braking forces and the orientation efforts of the axles. In curves, the orientation forces of the axles in the orientation mechanism come into play, in addition to any traction or braking forces. At this time these orientation efforts occur in proportion to the angles at which the axles have pivoted.

La première voiture qui entre sur une courbe entraine par son attelage la deuxième voiture en orientant progressivement son premier et son deuxième bogie et ainsi de suite.The first car that enters a curve drives the second car by its hitch, gradually orienting its first and second bogie and so on.

Le bogie pourrait comporter trois essieux, l'essieu médian étant guidé autor d'un axe fixe par rapport au châssis de bogie et les deux essieux extérieurs étant orientés comme dans les modes de réalisation décrits ci-dessus.The bogie could comprise three axles, the median axle being guided by an axis fixed relative to the bogie chassis and the two outer axles being oriented as in the embodiments described above.

Les éléments élastiques supérieur 4 et inférieur 8 peuvent être réalisés avec des blocs élastiques de compositions et dimensions différentes ou identiques.The upper 4 and lower 8 elastic elements can be produced with elastic blocks of different or identical compositions and dimensions.

Le châssis de bogie pourrait comporter de cadres fermés entourant chacun une boîte d'essieu et servant de support aux éléments 4 et 8.The bogie chassis could include closed frames each surrounding an axle box and serving to support elements 4 and 8.

Les boites d'essieu au lieu d'être disposées à l'extérieur des roues pourraient être disposées entre les roues, les longerons du châssis de bogie s'étendant alors entre les roues.The axle boxes, instead of being placed outside the wheels, could be placed between the wheels, the side members of the bogie chassis then extending between the wheels.

Claims (5)

1 Bogie with orientable axles, which is mounted pivotably under the body of a rail vehicle and which possesses a bogie chassis (1) carried by axles (2) which are provided with axle-boxes (3) and which can be oriented by means of an articulated system actuated as a result of the relative rotation of the body, the said system comprising a first part connecting two of these boxes and a second part (5) connecting two other boxes, in such a way as to compel these boxes to pivot about vertical axes of symmetry (22) of the axles, characterised in that the chassis (1) bears on each axle-box (3) by means of two elastic bearing elements (4, 8) which consist at least partially of elastomer and which are mounted above and below the box.
2. Bogie according to Claim 1, characterised in that each elastic bearing element (4 or 8) consists of two elastomer blocks (41 -42, 81-82) which are arranged in a herringbone pattern symmetrically relative to a vertical plane perpendicular to the axle axis (23) and which are centred on the vertical plane passing through this axle axis (23).
3. Bogie according to either one of the preceding claims, characterised in that each part of the articulated system is composed of a control lever (5) mounted pivotably on the chassis (1) and articulated on two connecting bars (31) which are each coupled to an axle-box (3) by means of a joint (331).
4. Bogie according to Claim 3, characterised in that each lever (5) is coupled to an operating point (61) of the body by means of a connection (6) which allows vertical movements of the body and the bogie chassis relative to one another and which permits the rotation of the body and the levers (5) about their respective axes of rotation (51.331).
5. Bogie according to Claim 4, characterised in that the connection (6) consists of a connecting rod linked means of a ball-and-socket joint (51, 61) to the control lever (5) and to an operating point (61) of the body.
EP82401490A 1981-08-07 1982-08-06 Bogie with orientatable wheel axles Expired EP0072328B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8115422 1981-08-07
FR8115422A FR2510962B1 (en) 1981-08-07 1981-08-07 ORIENTABLE AXLES BOGIE
US40479282A 1982-08-03 1982-08-03
US06/829,841 US4742779A (en) 1981-08-07 1986-02-11 Bogie with swiveling axles

Publications (2)

Publication Number Publication Date
EP0072328A1 EP0072328A1 (en) 1983-02-16
EP0072328B1 true EP0072328B1 (en) 1985-05-08

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EP82401490A Expired EP0072328B1 (en) 1981-08-07 1982-08-06 Bogie with orientatable wheel axles

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US (1) US4742779A (en)
EP (1) EP0072328B1 (en)

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Also Published As

Publication number Publication date
US4742779A (en) 1988-05-10
EP0072328A1 (en) 1983-02-16

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