EP0429636A1 - Suspension and shock absorbing device for railway vehicles with movable axles. - Google Patents

Suspension and shock absorbing device for railway vehicles with movable axles.

Info

Publication number
EP0429636A1
EP0429636A1 EP90910140A EP90910140A EP0429636A1 EP 0429636 A1 EP0429636 A1 EP 0429636A1 EP 90910140 A EP90910140 A EP 90910140A EP 90910140 A EP90910140 A EP 90910140A EP 0429636 A1 EP0429636 A1 EP 0429636A1
Authority
EP
European Patent Office
Prior art keywords
friction
axle box
chassis
axle
sole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90910140A
Other languages
German (de)
French (fr)
Other versions
EP0429636B1 (en
Inventor
Robert Urrea
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.)
Arbel Fauvet Rail SA
Original Assignee
Arbel Fauvet Rail SA
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
Application filed by Arbel Fauvet Rail SA filed Critical Arbel Fauvet Rail SA
Priority to AT90910140T priority Critical patent/ATE92409T1/en
Publication of EP0429636A1 publication Critical patent/EP0429636A1/en
Application granted granted Critical
Publication of EP0429636B1 publication Critical patent/EP0429636B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B61F5/26—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
    • B61F5/308—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating damping devices

Definitions

  • the invention relates to a suspension and damping device for rail vehicles with steerable axles, of the type known, for example, from French patent 1,256,132, certificates of addition 77428 and 82179 attached to the aforementioned French patent as well as by French patents 2,477,090 and 2,490,172.
  • Suspension and damping devices of this type which can be used to orient the axles of a bogie with respect to the bogie chassis or the axles of an agon with respect to the chassis or body of the wagon, include, for each axle, two axle boxes on each of which the chassis to be suspended is supported by two helical compression springs arranged on either side of the box.
  • Each spring is capped with a cap and the connection between the frame and the two caps is ensured by two pairs of connecting elements articulated on the caps and on the frame so that the lines of action of the two pairs of connecting elements converge downwards.
  • the axle box has, in the longitudinal direction of the chassis, a freedom of movement limited by two guard plates integral with the chassis and two pushers guided in said guard plates are interposed between the caps and the axle box, these pushers rubbing on the two opposite sides of the axle box.
  • the pushers are guided in the guard plates integral with the chassis to be suspended so as to be movable along their axes, the axes of the pushers being orthogonal to the axis of the axle when the latter has not undergone orientation.
  • the axes of the lifters are no longer perpendicular to the axle of the axle and the conditions of friction of the lifters on the sides of the axle box are modified in proportions which are a function of the angle of orientation, this modification being able to go as far as jamming detrimental to the orientation of the axle.
  • This orientation of the axles does not have a very significant consequence on the friction function of the pushers in the case of bogie axles, owing to the fact that due to the small wheelbase of the bogie axles, this orientation can be limited in this case. at very low angular values.
  • the present invention relates to a suspension and damping device for rail vehicles with steerable axles, overcoming the drawbacks of known devices of this type, that is to say allowing the orientation of the axles without affecting the transverse stability of the vehicle.
  • the invention also relates to a suspension and damping device designed so that it can be used for axles other than bogie axles and in particular for vehicle axles with two axles only.
  • the device according to the invention for suspension and damping for rail vehicles with steerable axles comprises, for each axle, two axle boxes on each of which the chassis to be suspended (bogie chassis or wagon body) is supported by two helical compression springs arranged on either side of each box.
  • Each spring is capped with a cap and the connection between the frame and the two caps is ensured by two pairs of connecting elements articulated on the caps and on the frame so that the lines of action of the two pairs of connecting elements converge downwards.
  • the axle box has, in the longitudinal direction of the chassis, a freedom of movement limited by two guard plates integral with the chassis.
  • each plunger is an articulated plunger comprising a rod guided in the guard plate and a friction sole in contact with the axle box, the sole being articulated on the rod.
  • the friction conditions of the lifters on the axle box are not affected by the orientation of the axle, which allows without altering the lateral stability of the vehicle, relatively angles of orientation important of the axle, as necessary to enable correct registration in the curves of the axles of large wheelbase vehicles, for example of two - axle wagons.
  • each push rod has, at its end facing the axle box, a blind hole with a hemispherical bottom and the friction sole comprises, opposite its friction face, a projecting spherical head cooperating with the hemispherical bottom of the blind hole in the stem.
  • the spherical head projecting from the sole ⁇ e friction is connected to the latter by a neck of diameter smaller than the diameter of the head and is held in the blind hole of the rod by a retaining ring engaged in a qorqe of the boron hole.
  • Such an arrangement makes it possible to dissociate the two friction functions which occur, on such suspension devices, for the purpose of damping between the pushers and the axle box, namely horizontal friction for damping transverse movements ( transverse stability) and friction in the vertical direction for damping vertical movements (vertical stability).
  • transverse stability for damping transverse movements
  • vertical stability friction in the vertical direction for damping vertical movements
  • FIGS. 1a and 1b schematically show in elevation and in horizontal section the conditions of contact of non-articulated pushers with an axle box during the orientation of the axle
  • FIGS. 2a and 2b represent same manner of contact conditions when using articulated pushers
  • Figure 3 shows, in detail, the vertical section of a suspension and damping device according to 1 * i nvention
  • Figure 4 shows larger scale the structure of an articulated pusher.
  • an axle box 2 in which is mounted an axle 3 with wheels 4 has horizontally, in the longitudinal direction of the chassis 1, mobility limited by two guard plates 5 integral with the chassis 1 and framing the axle box 2 with play on the two opposite sides.
  • the chassis 1 is supported on the axle box 2 by means of two helical compression springs 6, the lower ends of which bear on lateral ears 7 of the axle box 2.
  • the springs 6 are capped, each at its upper end, by a cap 7 on which is articulated, by a horizontal axis 8, the upper end of a pair of connecting elements 9 whose lower end is articulated by a horizontal axis 10 on lateral legs 11 of the corresponding guard plate 5.
  • a pusher 12 guided in each of the guard plates 5 is interposed between each cap 7 and one side of the axle box 2, the pusher 12 comprising a rod 13 guided in the guard plate 5 so as to be able to slide in the direction longitudinal of the chasi 1, the rod 13 carrying by its free end against the cap 7 and having at its other end a friction sole 14 in contact with a friction lining 15 attached to the axle box 2.
  • Figures 2a and 2b show a suspension and damping device having the same general structure as that of Figures la and 1b, but using instead of rigid pushers 12 of Figures la and lb, pushers articulated 16 between the caps 7 covering the springs 6 and the axle box 2.
  • Each articulated pusher 16 which will be described in more detail below, with the aid of FIGS. 3 and 4, comprises a rod 17 slidingly mounted in the longitudinal direction of the chassis 1 in the guard plate 5, and a friction sole 18 in contact with one side of the axle box 2, the rod 17 being connected to the sole 18 by a hinge 19.
  • the articulation 19 of the pushers 16 allows the friction soles 18 to maintain, whatever the orientation of the axle 3, always the same friction conditions with the friction linings 15 provided on the axle box 2.
  • the rod 17 has, at its end facing the sole 18, a blind hole 20 with a hemispherical bottom 21.
  • the friction sole 18 carries, projecting from its face turned towards the rod 17, a spherical head 22 which, in the example shown, corresponds to a spherical segment at a base, of a height slightly greater than the radius of the sphere.
  • the head 22 is connected to the sole 18 by a neck 23 with a diameter less than the diameter of the head 22.
  • the head 22 is held in the blind hole 20 by a retaining ring 24 engaged in a groove in the blind hole 20, so that the head 22, in contact with the hemispherical bottom 21 of the blind hole 20, has sufficient freedom to allow the orientation of the sole 18 by relative to the rod 17 within the necessary limits taking into account the possibilities of orientation of the axle 3 between the guard plates 5.
  • FIG. 3 which is a detailed section of an embodiment of the suspension device according to the invention, it can be seen that the sole 18 of each pusher 16 is embedded and movable horizontally in a groove 25 of a slide 26, itself movable vertically in a groove 27 of a slide 28 fixed laterally on the axle box 2.
  • This makes it possible to dissociate the friction in the horizontal direction which determines the transverse damping, that is to say the transverse stability of the vehicle , vertical friction which determines the damping of vertical movements.
  • suspension springs 6 are supplemented, in a manner known per se, by additional suspension springs 29 arranged inside the main springs 6.
  • additional suspension springs 29 arranged inside the main springs 6.
  • the use according to the invention of pushers articulated 16 between the caps 7 of the suspension springs 6 and the axle box 2, is particularly advantageous in the case of individual axles, that is to say on vehicles which are not with bogie and whose axles have a large wheelbase.
  • the invention is also applicable to bogie axles, in particular on vehicles having to operate on tracks having curves of small radius.

Abstract

Dispositif de suspension et d'amortissement du type comprenant deux ressorts de suspension (6) disposés de part et d'autre d'une boîte d'essieu (2), des éléments de liaison (9) articulés sur des chapeaux (7) coiffant les ressorts (6) et le châssis (1) à suspendre, de manière que les éléments de liaison (9) convergent vers le bas et des poussoirs (16) intercalés entre les chapeaux (7) et les côtés de la boîte d'essieu (2). Les poussoirs (16) sont constitués par des poussoirs articulés, ce qui permet de maintenir les mêmes conditions de frottement des poussoirs sur la boîte d'essieu en cas d'orientation de l'essieu dans les courbes. Application notamment aux véhicules ferroviaires à deux essieux.Suspension and damping device of the type comprising two suspension springs (6) arranged on either side of an axle box (2), connecting elements (9) articulated on caps (7) covering the springs (6) and the chassis (1) to be suspended, so that the connecting elements (9) converge downwards and pushers (16) interposed between the caps (7) and the sides of the axle box (2). The pushers (16) consist of articulated pushers, which makes it possible to maintain the same conditions of friction of the pushers on the axle box in the event of orientation of the axle in curves. Application in particular to railway vehicles with two axles.

Description

DISPOSITIF DE SUSPENSION ET D'AMORTISSEMENT POUR VEHICULES FERROVIAIRES A ESSIEUX ORIENTABLES SUSPENSION AND DAMPING DEVICE FOR RAILWAY AXLES RAILWAY VEHICLES
L'invention se rapporte à un dispositif de suspension et d'amortissement pour véhicules ferroviaires â essieux orientables, du type connu, par exemple, par le brevet français 1.256.132, les certificats d'addition 77428 et 82179 rattachés au brevet français précité ainsi que par les brevets français 2.477.090 et 2.490.172.The invention relates to a suspension and damping device for rail vehicles with steerable axles, of the type known, for example, from French patent 1,256,132, certificates of addition 77428 and 82179 attached to the aforementioned French patent as well as by French patents 2,477,090 and 2,490,172.
Les dispositifs de suspension et d'amortissement de ce type qui peuvent être utilisés pour rendre orientables les essieux d'un boggie par rapport au châssis de boggie ou les essieux d'un agon par rapport au châssis ou à la caisse du wagon, comprennent, pour chaque essieu, deux boîtes d'essieux sur chacune desquelles le châssis à suspendre prend appui par deux ressorts hélicoïdaux de compression disposés de part et d'autre de la boîte.Suspension and damping devices of this type which can be used to orient the axles of a bogie with respect to the bogie chassis or the axles of an agon with respect to the chassis or body of the wagon, include, for each axle, two axle boxes on each of which the chassis to be suspended is supported by two helical compression springs arranged on either side of the box.
Chaque ressort est coiffé d'un chapeau et la liaision entre le châssis et les deux chapeaux est assurée par deux paires d'éléments de liaison articulés sur les chapeaux et sur le châssis de telle manière que les lignes d'action des deux paires d'éléments de liaison convergent vers le bas.Each spring is capped with a cap and the connection between the frame and the two caps is ensured by two pairs of connecting elements articulated on the caps and on the frame so that the lines of action of the two pairs of connecting elements converge downwards.
La boîte d'essieu présente, dans la direction longitudinale du châssis, une liberté de déplacement limitée par deux plaques de garde solidaires du châssis et deux poussoirs guidés dans les dites plaques de garde sont intercalés entre les chapeaux et la boîte d'essieu, ces poussoirs frottant sur les deux côtés opposés de la boîte d'essieu.The axle box has, in the longitudinal direction of the chassis, a freedom of movement limited by two guard plates integral with the chassis and two pushers guided in said guard plates are interposed between the caps and the axle box, these pushers rubbing on the two opposite sides of the axle box.
Les poussoirs sont guidés dans les plaques de garde solidaires du châssis è suspendre de manière à être mobiles suivant leurs axes, les axes des poussoirs étant orthogonaux à l'axe de l 'essieu lorsque ce dernier n'a pas subi d'orientation.The pushers are guided in the guard plates integral with the chassis to be suspended so as to be movable along their axes, the axes of the pushers being orthogonal to the axis of the axle when the latter has not undergone orientation.
Lorsque l 'essieu a subi une orientation, les axes des poussoirs ne sont plus perpendiculaires à l 'axe de l 'essieu et les conditions de frottement des poussoirs sur les côtés de la boîte d'essieu se trouvent modifiées dans des proportions qui sont fonction de l'angle d'orientation, cette modification pouvant aller jusqu'à un coincement préjudiciable à l 'orientation de l 'essieu.When the axle has undergone an orientation, the axes of the lifters are no longer perpendicular to the axle of the axle and the conditions of friction of the lifters on the sides of the axle box are modified in proportions which are a function of the angle of orientation, this modification being able to go as far as jamming detrimental to the orientation of the axle.
Cette orientation des essieux n'a pas de conséquence très importante sur la fonction de frottement des poussoirs dans le cas d'essieux de boggie, du fait qu'en raison du faible empattement des essieux de boggies, cette orientation peut être limitée dans ce cas à des valeurs angulaires très faibles.This orientation of the axles does not have a very significant consequence on the friction function of the pushers in the case of bogie axles, owing to the fact that due to the small wheelbase of the bogie axles, this orientation can be limited in this case. at very low angular values.
Il n'en est pas de même dans le cas des véhicules à deux essieux seulement.This is not the case in the case of two-axle vehicles only.
En effet, sur de tels véhicules, l'empattement des essieux est relativement important.Indeed, on such vehicles, the wheelbase of the axles is relatively large.
Par conséquent, une bonne orientation des essieux, implique des angles d'orientation relativement importants auquel cas les conditions de frottement des poussoirs deviennent iπcontrôl ables.Consequently, a good orientation of the axles implies relatively large angles of orientation in which case the conditions of friction of the pushers become iπcontrôl able.
C'est la raison pour laquelle de tels dispositifs de suspension et d'amortissement n'ont été utilisés jusqu'à présent que sur des essieux de boggies. Pour tenter de remédier à ces conditions de frottement aléatoires des poussoirs, on pourrait imaginer de graisser les poussoirs ou d'augmenter les jeux mais chacune de ces deux dispositions altérerait la stabilité transversale du véhicule, laquelle dépend essentiellement des conditions de frottement des poussoirs sur la boîte d'essieux.This is the reason why such suspension and damping devices have so far been used only on bogie axles. In an attempt to remedy these conditions of random friction of the pushers, one could imagine greasing the pushers or increasing the clearances but each of these two provisions would alter the transverse stability of the vehicle, which essentially depends on the friction conditions of the pushers on the axle box.
La présente invention a pour objet un dispositif de suspension et d'amortissement pour véhicules ferroviaires à essieux orientables, remédiant aux inconvénients des dispositifs connus de ce type c'est à dire permettant l 'orientation des essieux sans affecter la stabilité transversale du véhicule.The present invention relates to a suspension and damping device for rail vehicles with steerable axles, overcoming the drawbacks of known devices of this type, that is to say allowing the orientation of the axles without affecting the transverse stability of the vehicle.
L'invention a également pour objet un dispositif de suspension et d'amortissement conçu de manière à pouvoir être utilisé pour des essieux autres que des essieux de boggies et en particulier pour des essieux de véhicules à deux essieux seulement.The invention also relates to a suspension and damping device designed so that it can be used for axles other than bogie axles and in particular for vehicle axles with two axles only.
Le dispositif conforme à l'invention de suspension et d'amortissement pour véhicules ferroviaires à essieux orientables comprend, pour chaque essieu, deux boîtes d'essieux sur chacune desquelles le châssis à suspendre (châssis de boggie ou caisse de wagon) prend appui par deux ressorts hélicoïdaux de compression disposés de part et d'autre de chaque boîte.The device according to the invention for suspension and damping for rail vehicles with steerable axles comprises, for each axle, two axle boxes on each of which the chassis to be suspended (bogie chassis or wagon body) is supported by two helical compression springs arranged on either side of each box.
Chaque ressort est coiffé d'un chapeau et la liaison entre le châssis et les deux chapeaux est assurée par deux paires d'éléments de liaison articulés sur les chapeaux et sur le châssis de telle manière que les lignes d'action des deux paires d'éléments de liaison convergent vers le bas.Each spring is capped with a cap and the connection between the frame and the two caps is ensured by two pairs of connecting elements articulated on the caps and on the frame so that the lines of action of the two pairs of connecting elements converge downwards.
La boîte d'essieu présente, dans la di ection longitudinale du châssis, une liberté de déplacement limitée par deux plaques de garde solidaires du châssis.The axle box has, in the longitudinal direction of the chassis, a freedom of movement limited by two guard plates integral with the chassis.
Deux poussoirs guidés dans les dites plaques de garde sont intercalés entre les chapeaux et la boîte d'essieu, ces poussoirs frottant sur les deux côtés opposés de la boîte d'essieu.Two pushers guided in said guard plates are interposed between the caps and the axle box, these pushers rubbing on the two opposite sides of the axle box.
Suivant l 'invention, chaque poussoir est un poussoir articulé comprenant une tige guidée dans la plaque de garde et une semelle de frottement en contact avec la boîte d'essieu, la semelle étant articulée sur la tige.According to the invention, each plunger is an articulated plunger comprising a rod guided in the guard plate and a friction sole in contact with the axle box, the sole being articulated on the rod.
Grâce l 'utilisation de poussoirs articulés les conditions de frottement des poussoirs sur la boîte d'essieu ne sont pas affectées par l 'orientation de l 'essieu, ce qui autorise sans altération de la stabilité latérale du véhicule, des angles d'orientation relativement importants de l 'essieu, tels qu'ils sont nécessaires pour permettre une inscription correcte dans les courbes des essieux de véhicules à grand empattement, par exemple de wagons à deux essieux.Thanks to the use of articulated lifters, the friction conditions of the lifters on the axle box are not affected by the orientation of the axle, which allows without altering the lateral stability of the vehicle, relatively angles of orientation important of the axle, as necessary to enable correct registration in the curves of the axles of large wheelbase vehicles, for example of two - axle wagons.
De préférence, chaque tige de poussoir présente, à son extrémité tournée vers la boîte d'essieu, un trou borgne à fond hémisphérique et la semelle de frottement comporte, à l 'opposé de sa face de frottement, une tête sphérique en saillie coopérant avec le fond hémisphérique du trou borgne de la tige.Preferably, each push rod has, at its end facing the axle box, a blind hole with a hemispherical bottom and the friction sole comprises, opposite its friction face, a projecting spherical head cooperating with the hemispherical bottom of the blind hole in the stem.
De préférence, la tête sphérique en saillie sur la semelle σe frottement se raccorde à cette dernière par un col de diamètre plus faible que le diamètre de la tête et est maintenue dans le trou borgne de la tige par un anneau de retenue engagé dans une qorqe du trou borαne. Grâce au fait que la surface de frottement de la semelle des poussoirs conserve toujours quel que soit l 'angle d'orientation de l 'essieu, la même position parallèle à la surface de frottement conjuguée sur la boîte d'essieu, il est possible d'encastrer la semelle de frottement des poussoirs dans une rainure horizontale ménagée dans un coulisseau lui-même mobile verticalement sur la boîte d'essieu.Preferably, the spherical head projecting from the sole σe friction is connected to the latter by a neck of diameter smaller than the diameter of the head and is held in the blind hole of the rod by a retaining ring engaged in a qorqe of the boron hole. Thanks to the fact that the friction surface of the soleplate always maintains whatever the orientation angle of the axle, the same position parallel to the friction surface combined on the axle box, it is possible to '' embed the friction sole of the tappets in a horizontal groove made in a slider itself movable vertically on the axle box.
Un tel agencement permet de dissocier les deux fonctions de frottement qui interviennent, sur de tels dispositifs de suspension, à des fins d'amortissement entre les poussoirs et la boîte d'essieu, à savoir un frottement horizontal pour l'amortissement des mouvements transversaux (stabilité transversale) et un frottement en direction verticale pour l'amortissement des mouvements verticaux (stabilité verticale). De plus, il est possible dans ce cas d'adapter les couples de matériaux de manière à obtenir des conditions de frottements optimales en direction verticale et en direction horizontale.Such an arrangement makes it possible to dissociate the two friction functions which occur, on such suspension devices, for the purpose of damping between the pushers and the axle box, namely horizontal friction for damping transverse movements ( transverse stability) and friction in the vertical direction for damping vertical movements (vertical stability). In addition, it is possible in this case to adapt the pairs of materials so as to obtain optimal friction conditions in the vertical direction and in the horizontal direction.
Il est ainsi possible, par exemple, de choisir le couple acier-matière plastique entre le coulisseau et la boîte d'essieu afin d'obtenir un faible frottement vertical, et le couple acier-acier entre la semelle du poussoir et le coulisseau, afin d'obtenir un frottement élevé dans le sens horizontal.It is thus possible, for example, to choose the steel-plastic couple between the slide and the axle box in order to obtain a low vertical friction, and the steel-steel couple between the sole of the pusher and the slide, so to obtain a high friction in the horizontal direction.
En se référant aux dessins annexés, on va décrire ci-aprës, plus en détail, un exemple de réalisation illustratif et non limitatif d'un dispositif conforme à l 'invention ; sur les dessins : les figures la et 1 b représentent schématiquement en élévation et en coupe horizontale les conditions de contact de poussoirs non articulés avec une boîte d'essieu lors de l'orientation de l'essieu, les figures 2a et 2b représentent de la même manière les conditions de contact en cas d'utilisation de poussoirs articulés, la figure 3 représente, en détail, la coupe verticale d'un dispositif de suspension et d'amortissement conforme à 1 *i nvention, la figure 4 représente à plus grande échelle la structure d'un poussoir articulé. Sur la figure la qui représente schématiquement un dispositif connu de suspension et d'amortissement d'un châssis 1 (châssis de boggie ou châssis ou caisse de wagon), une boîte d'essieu 2 dans laquelle est monté un essieu 3 avec roues 4 présente horizontalement, dans la direction longitudinale du châssis 1, une mobilité limitée par deux plaques de garde 5 solidaires du châssis 1 et encadrant la boîte d'essieu 2 avec du jeu sur les deux côtés opposés.Referring to the accompanying drawings, there will be described below, in more detail, an illustrative and nonlimiting exemplary embodiment of a device according to the invention; in the drawings: FIGS. 1a and 1b schematically show in elevation and in horizontal section the conditions of contact of non-articulated pushers with an axle box during the orientation of the axle, FIGS. 2a and 2b represent same manner of contact conditions when using articulated pushers, Figure 3 shows, in detail, the vertical section of a suspension and damping device according to 1 * i nvention, Figure 4 shows larger scale the structure of an articulated pusher. In FIG. 1a which schematically represents a known device for suspension and damping of a chassis 1 (bogie chassis or chassis or wagon body), an axle box 2 in which is mounted an axle 3 with wheels 4 has horizontally, in the longitudinal direction of the chassis 1, mobility limited by two guard plates 5 integral with the chassis 1 and framing the axle box 2 with play on the two opposite sides.
Le châssis 1 prend appui sur la boîte d'essieu 2 par l 'intermédiaire de deux ressorts hélicoïdaux de compression 6 dont les extrémités inférieures portent sur des oreilles latérales 7 de la boîte d'essieu 2.The chassis 1 is supported on the axle box 2 by means of two helical compression springs 6, the lower ends of which bear on lateral ears 7 of the axle box 2.
Les ressorts 6 sont coiffés, chacun à son extrémité supérieure, par un chapeau 7 sur lequel est articulée, par un axe horizontal 8, l 'extrémité supérieure d'une paire d'éléments de liaison 9 dont l 'extrémité inférieure est articulée par un axe horizontal 10 sur des pattes latérales 11 de la plaque de garde 5 correspondante.The springs 6 are capped, each at its upper end, by a cap 7 on which is articulated, by a horizontal axis 8, the upper end of a pair of connecting elements 9 whose lower end is articulated by a horizontal axis 10 on lateral legs 11 of the corresponding guard plate 5.
Un poussoir 12 guidé dans chacune des plaques de garde 5 est intercalé entre chaque chapeau 7 et un côté de la boîte d'essieu 2, le poussoir 12 comprenant une tige 13 guidée dans la plaque de garde 5 de manière à pouvoir coulisser dans la direction longitudinale du chassi 1, la tige 13 portant par son extrémité libre contre le chapeau 7 et présentant à son autre extrémité une semelle de frottement 14 en contact avec une garniture de frottement 15 rapportée sur la boîte d'essieu 2.A pusher 12 guided in each of the guard plates 5 is interposed between each cap 7 and one side of the axle box 2, the pusher 12 comprising a rod 13 guided in the guard plate 5 so as to be able to slide in the direction longitudinal of the chasi 1, the rod 13 carrying by its free end against the cap 7 and having at its other end a friction sole 14 in contact with a friction lining 15 attached to the axle box 2.
Des dispositifs de suspension de ce type sont bien connus notamment par les brevets déjà mentionnés.Suspension devices of this type are well known in particular by the patents already mentioned.
Comme le montre la figure 1b, l 'angle que les axes des tiges 13 des poussoirs 12 font avec l'axe de l 'essieu 3 varie lors de l 'orientation de l 'essieu dans les courbes, ce qui modifie les conditions de contact des semelles 14 des poussoirsAs shown in FIG. 1b, the angle that the axes of the rods 13 of the pushers 12 make with the axis of the axle 3 varies during the orientation of the axle in the curves, which modifies the contact conditions soles 14 pushers
12 avec les garnitures de frottement 15 de la boîte d'essieu 2.12 with the friction linings 15 of the axle box 2.
Il en résulte une modification des conditions de frottement entre la semelle 14 et la garniture 15, d'où une variation de l 'effet d'amortissement transversal, donc une variation de la stabilité transversale du véhicule. Cette variation des conditions de frottement qui peut aller jusqu'à un coïncement est d'autant plus importante que l'amplitude de l 'orientation de l'essieu 3 est grande, le degré d'orientation étant fonction de l 'empattement des essieux du véhicule et du rayon de la courbe.This results in a modification of the friction conditions between the sole 14 and the lining 15, hence a variation in the transverse damping effect, therefore a variation in the transverse stability of the vehicle. This variation in the friction conditions which can go as far as a coincidence is all the more important as the amplitude of the orientation of the axle 3 is large, the degree of orientation being a function of the wheelbase of the axles of the vehicle and radius of the curve.
Les figures 2a et 2b représentent un dispositif de suspension et d'amortissement ayant la même structure générale que celui des figures la et 1b, mais utilisant à la place des poussoirs rigides 12 des figures la et lb, des poussoirs articulés 16 entre les chapeaux 7 coiffant les ressorts 6 et la boîte d'essieu 2.Figures 2a and 2b show a suspension and damping device having the same general structure as that of Figures la and 1b, but using instead of rigid pushers 12 of Figures la and lb, pushers articulated 16 between the caps 7 covering the springs 6 and the axle box 2.
Chaque poussoir articulé 16 qui sera décrit plus en détail ci-aprës, à l'aide des figures 3 et 4, comprend une tige 17 montée coulissante suivant la direction longi udinale du châssis 1 dans la plaque de garde 5, et une semelle de frottement 18 en contact avec un côté de la boîte d'essieu 2, la tige 17 étant reliée à la semelle 18 par une articulation 19.Each articulated pusher 16 which will be described in more detail below, with the aid of FIGS. 3 and 4, comprises a rod 17 slidingly mounted in the longitudinal direction of the chassis 1 in the guard plate 5, and a friction sole 18 in contact with one side of the axle box 2, the rod 17 being connected to the sole 18 by a hinge 19.
Tel que cela apparaît sur la figure 2b, l'articulation 19 des poussoirs 16 permet aux semelles de frottement 18 de conserver, quelle que soit l'orientation de l'essieu 3, toujours les mêmes conditions de frottement avec les garnitures de frottement 15 prévues sur la boîte d'essieu 2.As shown in FIG. 2b, the articulation 19 of the pushers 16 allows the friction soles 18 to maintain, whatever the orientation of the axle 3, always the same friction conditions with the friction linings 15 provided on the axle box 2.
Selon la figure 4 qui représente, en détail, un poussoir articulé 16, la tige 17 comporte, à son extrémité tournée vers la semelle 18, un trou borgne 20 à fond 21 hémisphérique.According to Figure 4 which shows, in detail, an articulated pusher 16, the rod 17 has, at its end facing the sole 18, a blind hole 20 with a hemispherical bottom 21.
La semelle de frottement 18 porte, en saillie sur sa face tournée vers la tige 17, une tête 22 sphérique qui, dans l 'exemple représenté, correspond à un segment sphérique à une base, d'une hauteur légèrement supérieure au rayon de sphère. La tête 22 se raccorde à la semelle 18 par un col 23 de diamètre inférieur au diamètre de la tête 22.The friction sole 18 carries, projecting from its face turned towards the rod 17, a spherical head 22 which, in the example shown, corresponds to a spherical segment at a base, of a height slightly greater than the radius of the sphere. The head 22 is connected to the sole 18 by a neck 23 with a diameter less than the diameter of the head 22.
La tête 22 est maintenue dans le trou borgne 20 par un anneau de retenue 24 engagé dans une gorge du trou borgne 20, de telle manière que la tête 22, en contact avec le fond hémisphérique 21 du trou borgne 20, possède une liberté suffisante pour permettre l'orientation de la semelle 18 par rapport à la tige 17 dans les limites nécessaires compte tenu des possibilités d'orientation de l 'essieu 3 entre les plaques de garde 5.The head 22 is held in the blind hole 20 by a retaining ring 24 engaged in a groove in the blind hole 20, so that the head 22, in contact with the hemispherical bottom 21 of the blind hole 20, has sufficient freedom to allow the orientation of the sole 18 by relative to the rod 17 within the necessary limits taking into account the possibilities of orientation of the axle 3 between the guard plates 5.
Sur la figure 3 qui est une coupe détaillée d'un mode de réalisation du dispositif de suspension conforme à l 'invention, on reconnaît que la semelle 18 de chaque poussoir 16 est encastrée et mobile horizontalement dans une rainure 25 d'un coulisseau 26, lui-même mobile verticalement dans une rainure 27 d'une glissière 28 fixée latéralement sur la boîte d'essieu 2. Cela permet de dissocier le frottement dans le sens horizontal qui détermine l'amortissement transversal c'est à dire la stabilité transversale du véhicule, du frottement vertical qui détermine l 'amortissement des mouvements verticaux.In FIG. 3 which is a detailed section of an embodiment of the suspension device according to the invention, it can be seen that the sole 18 of each pusher 16 is embedded and movable horizontally in a groove 25 of a slide 26, itself movable vertically in a groove 27 of a slide 28 fixed laterally on the axle box 2. This makes it possible to dissociate the friction in the horizontal direction which determines the transverse damping, that is to say the transverse stability of the vehicle , vertical friction which determines the damping of vertical movements.
Il est ainsi possible en particulier de choisi , selon les besoins, les couples de matériaux en contact déterminant le frottement horizontal et le frottement vertical, afin d'obtenir ainsi un frottement élevé et également un amortissement élevé dans le sens horizontal (stabilité transversale) et un frottement faible, donc également un amortissement faible, dans le sens vertical .It is thus possible in particular to choose, according to the needs, the pairs of materials in contact determining the horizontal friction and the vertical friction, in order to thus obtain a high friction and also a high damping in the horizontal direction (transverse stability) and low friction, therefore also low damping, in the vertical direction.
On reconnaît par ailleurs sur la figure 3 que les ressorts de suspension 6 sont complétés, de façon connue en soi, par des ressorts additionnels de suspension 29 disposés à l 'intérieur des principaux ressorts 6. L'utilisation conforme à l 'invention de poussoirs articulés 16 entre les chapeaux 7 des ressorts de suspension 6 et la boîte d'essieu 2, est particulièrement intéressante dans le cas d'essieux individuels, c'est à dire sur des véhicules qui ne sont pas à boggie et dont les essieux présentent un grand empattement.It is also recognized in Figure 3 that the suspension springs 6 are supplemented, in a manner known per se, by additional suspension springs 29 arranged inside the main springs 6. The use according to the invention of pushers articulated 16 between the caps 7 of the suspension springs 6 and the axle box 2, is particularly advantageous in the case of individual axles, that is to say on vehicles which are not with bogie and whose axles have a large wheelbase.
Cependant, l 'invention est également applicable à des essieux de boggies, notamment sur des véhicules devant évoluer sur des voies présentant des courbes de faible rayon. However, the invention is also applicable to bogie axles, in particular on vehicles having to operate on tracks having curves of small radius.

Claims

REVENDICATIONS
1. Dispositif de suspension et d'amortissement pour véhicules ferroviaires à essieux orientables comprenant pour chaque essieu, deux boîtes d'essieu sur chaque desquelles le châssis à suspendre (châssis de boggie ou caisse de wagon) prend appui par deux ressorts hélicoïdaux de compression disposés de part et d'autre de chaque boîte, chaque ressort étant coiffé d'un chapeau et la liaison entre le châssis et les deux chapeaux étant assurée par deux paires d'éléments de liaison articulés sur les chapeaux et sur le châssis, de telle manière que les lignes d'action des deux paires d'éléments de liaison convergent vers le bas, la boîte d'essieu présentant, dans la direction longitudinale du châssis, une liberté de déplacement limitée par deux plaques de garde solidaires du châssis, et deux poussoirs guidés dans les dites plaques de garde étant intercalés entres les chapeaux et la boîte d'essieu, les dits poussoirs frottant sur les deux côtés opposés de la boîte d'essieu, CARACTERISE par le fait que chaque poussoir est un poussoir articulé (16) comprenant une tige (17) guidée dans la plaque de garde (5) et une semelle de frottement (18) en contact avec la boîte d'essieu (2), la semelle étant articulée sur la tige.1. Suspension and damping device for railway vehicles with steerable axles comprising for each axle, two axle boxes on each of which the chassis to be suspended (bogie chassis or wagon body) is supported by two helical compression springs arranged on each side of each box, each spring being capped with a cap and the connection between the chassis and the two caps being provided by two pairs of connecting elements articulated on the caps and on the chassis, in such a way that the lines of action of the two pairs of connecting elements converge downwards, the axle box having, in the longitudinal direction of the chassis, a freedom of movement limited by two guard plates integral with the chassis, and two pushers guided in the said guard plates being interposed between the caps and the axle box, the said pushers rubbing on the two opposite sides of the axle box, CHARACTERIZED by the fact that each plunger is an articulated plunger (16) comprising a rod (17) guided in the guard plate (5) and a friction sole (18) in contact with the axle box (2), the sole being articulated on the upper.
2. Dispositif suivant la revendication 1 caractérisé par le fait que chaque tige de poussoir (17) présente, à son extrémité tournée vers la boîte d'essieu (2), un trou borgne (20) à fond hémisphérique (21) et la semelle de frottement (18) comporte, à l'opposé de sa face de frottement, une tête sphérique (22) en saillie coopérant avec le fond hémisphérique du trou borgne de la tige.2. Device according to claim 1 characterized in that each push rod (17) has, at its end facing the axle box (2), a blind hole (20) with hemispherical bottom (21) and the sole friction (18) comprises, opposite its friction face, a spherical head (22) projecting cooperating with the hemispherical bottom of the blind hole of the rod.
3. Dispositif suivant la revendication 2 caractérisé par le fait que la tête sphérique (22) en saillie sur la semelle de frottement (18) se raccorde à cette dernière par un col (23) de diamètre plus faible que le diamètre de la tête et est maintenue dans le trou borgne (20) de la tige (17) par un anneau de retenue (24) engagé dans une gorge du trou borgne. 3. Device according to claim 2 characterized in that the spherical head (22) projecting from the friction sole (18) is connected to the latter by a neck (23) of smaller diameter than the diameter of the head and is held in the blind hole (20) of the rod (17) by a retaining ring (24) engaged in a groove in the blind hole.
4. Dispositif suivant l 'une quelconque des revendications précédentes caractérisé par le fait la semelle de frottement (18) de chaque poussoir (16) est encastrée dans une rainure horizontale (25) ménagée dans un coulisseau (26) lui-même mobile verticalement dans une rainure (27) d'une glissière (28) disposée sur la boîte d'essieu (2). 4. Device according to any one of the preceding claims, characterized in that the friction sole (18) of each pusher (16) is embedded in a groove horizontal (25) formed in a slide (26) itself movable vertically in a groove (27) of a slide (28) disposed on the axle box (2).
EP90910140A 1989-06-19 1990-06-18 Suspension and shock absorbing device for railway vehicles with movable axles Expired - Lifetime EP0429636B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90910140T ATE92409T1 (en) 1989-06-19 1990-06-18 SUSPENSION AND DAMPING DEVICE FOR RAIL VEHICLES WITH CONTROLLABLE AXLES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8908490 1989-06-19
FR8908490A FR2648417B1 (en) 1989-06-19 1989-06-19 SUSPENSION AND DAMPING DEVICE FOR RAILWAY AXLES RAILWAY VEHICLES

Publications (2)

Publication Number Publication Date
EP0429636A1 true EP0429636A1 (en) 1991-06-05
EP0429636B1 EP0429636B1 (en) 1993-08-04

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EP90910140A Expired - Lifetime EP0429636B1 (en) 1989-06-19 1990-06-18 Suspension and shock absorbing device for railway vehicles with movable axles

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EP (1) EP0429636B1 (en)
AU (1) AU5933790A (en)
DE (1) DE69002589T2 (en)
FR (1) FR2648417B1 (en)
PT (1) PT94413B (en)
WO (1) WO1990015744A1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
GB2401844A (en) * 2003-05-20 2004-11-24 Powell Duffryn Rail Ltd Improvements in the track friendliness of a Y25 bogie

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Publication number Priority date Publication date Assignee Title
DE19925634A1 (en) * 1999-06-04 2000-12-14 Dwa Deutsche Waggonbau Gmbh Running gear for rail vehicles
EP1097852A1 (en) * 1999-11-02 2001-05-09 KOCKUMS Industrier ABOLAG Bogie for railway freight wagons with radial self-steerable wheel-sets
RU2467901C2 (en) * 2010-09-08 2012-11-27 Федеральное государственное образовательное учреждение высшего профессионального образования "Брянская государственная сельскохозяйственная академия" Axlebox guide

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US2297863A (en) * 1940-01-11 1942-10-06 Symington Gould Corp Railway truck
DE2110072C3 (en) * 1971-03-03 1981-07-30 Wegmann & Co, 3500 Kassel Axle guide on a bogie for rail vehicles, in particular for freight wagons
BE790623A (en) * 1971-12-04 1973-02-15 Linke Hofmann Busch BOGGIE FOR RAIL VEHICLES
FR2477090A1 (en) * 1980-02-29 1981-09-04 Sambre & Meuse Usines SUSPENSION FOR CHASSIS WITH AT LEAST TWO AXLES OF RAILWAY VEHICLE AND CHASSIS HAVING THIS SUSPENSION

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2401844A (en) * 2003-05-20 2004-11-24 Powell Duffryn Rail Ltd Improvements in the track friendliness of a Y25 bogie
GB2401844B (en) * 2003-05-20 2006-07-26 Powell Duffryn Rail Ltd Improvements in the track friendliness of the Y25 bogie
GB2422588A (en) * 2003-05-20 2006-08-02 English Welsh & Scottish Railw Improvements in the track friendliness of a Y25 bogie

Also Published As

Publication number Publication date
DE69002589T2 (en) 1993-11-25
EP0429636B1 (en) 1993-08-04
WO1990015744A1 (en) 1990-12-27
PT94413B (en) 1997-02-28
PT94413A (en) 1991-12-31
FR2648417B1 (en) 1991-09-20
DE69002589D1 (en) 1993-09-09
AU5933790A (en) 1991-01-08
FR2648417A1 (en) 1990-12-21

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