EP0581707A1 - Structure for energy absorption, especially for railway vehicles - Google Patents

Structure for energy absorption, especially for railway vehicles Download PDF

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Publication number
EP0581707A1
EP0581707A1 EP93440051A EP93440051A EP0581707A1 EP 0581707 A1 EP0581707 A1 EP 0581707A1 EP 93440051 A EP93440051 A EP 93440051A EP 93440051 A EP93440051 A EP 93440051A EP 0581707 A1 EP0581707 A1 EP 0581707A1
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EP
European Patent Office
Prior art keywords
structure according
cross member
profiles
cutouts
advantageously
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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.)
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EP93440051A
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German (de)
French (fr)
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EP0581707B1 (en
Inventor
Marwan Dannawi
Louis Marie Cleon
Aloise Fuchs
Bernard Tritz
Gérard Bich
Paul Preiss
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De Dietrich et Cie SA
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De Dietrich et Cie SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D15/00—Other railway vehicles, e.g. scaffold cars; Adaptations of vehicles for use on railways
    • B61D15/06—Buffer cars; Arrangements or construction of railway vehicles for protecting them in case of collisions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D17/00—Construction details of vehicle bodies
    • B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
    • B61D17/06—End walls
    • 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
    • B61F1/00—Underframes
    • B61F1/08—Details
    • B61F1/10—End constructions

Definitions

  • the present invention relates to the field of vehicle construction, in particular rail, and in particular the free end structures of all vehicles, and relates to an energy absorbing structure for such vehicles.
  • the present invention aims to overcome these drawbacks.
  • an energy absorbing structure for vehicles in particular railway, characterized in that it consists of a zone deformable by dynamic plastic buckling of its structural elements, said zone being provided for at least one or at both ends of the vehicle and advantageously forming a luggage compartment, an access platform, or the like, with the possibility of bilateral access, between a movable end frame and a fixed frame delimiting the end of the traveler space.
  • the energy absorbing structure for vehicles in particular rail vehicles, shown by way of example in FIG. 1 of the accompanying drawings, consists of a zone 1 deformable by dynamic plastic buckling of its structural elements 2, said zone 1 being provided for at least one or both ends of the vehicle 3 and advantageously forming a luggage compartment, an access platform, or the like, with the possibility of bilateral access, between a mobile end frame 4 and a fixed frame 5 delimiting the end of the passenger area.
  • the movable end frame 4 is constituted by anti-collision uprights 6, by an upper cross member 7 and by a head cross member 8, on which the hitch 9 is fixed, as well as the buffers 10 and advantageously a device for anti-overlap ensuring good distribution of forces.
  • the coupling 9 and the buffers 10 are of known type and are shown in the accompanying drawing only by their center line.
  • the anti-overlapping devices are also not shown in the accompanying drawing and may in particular be of the type described in French patent application No. 91 11407.
  • the fixed frame 5 is advantageously in the form of a rigid hoop 11, bearing on the complete section of the vehicle 3 and connected to a lower cross member 12.
  • the latter may, in particular, form a pivot cross member of a railway vehicle.
  • the structural elements 2 are deformable in a predetermined direction and are formed by profiles forming, respectively, central beams 13 and stretchers 14 connecting the head cross member 8 of the movable frame 4 to the lower cross member 12 of the fixed frame 5 and leaves 15 connecting the upper cross member 7 of the movable frame 4 to the arch 11 of the fixed frame 5.
  • the deformable zone 1 is advantageously intended to carry out an energy absorption by plastic buckling of the structural elements 2 without having recourse to energy absorbers added to the structure of the vehicle.
  • the profiles constituting the elements 2 forming the central beams 13, the stretchers 14 and the leaves 15, are profiles 1 double core and can be produced by extrusion and machining or by mechanical welding, the cutouts 16 being advantageously produced by machining.
  • the profiles 1 double core constituting the elements 2 are shaped to deform by oriented plastic buckling taking place by successive deformations in the longitudinal axis of said profiles.
  • the profiles forming the central beams 13, the stretchers 14 and the leaves 15, are advantageously made of a ductile material allowing a significant elongation and are provided, in the plane of their preferential deformation , of cutouts 16.
  • These cutouts 16 are preferably in the form of oblong holes.
  • the prediction of the holes 16 makes it possible to achieve a weakening of the profiles under a compression load and the existence of circular arcs at the ends of said cuts 16 makes it possible to direct the plastic buckling of said profiles perpendicular to the longitudinal axis of said cuts 16 It follows that in the embodiment shown in the accompanying drawing the vertical walls of the sections 13 to 15 tend to deform in line with the cutouts 16 in a series of symmetrical folds each corresponding to a cutout. This series of folds makes it possible, in fact, to carry out a plastic deformation and buckling by stages, that is to say progresses sifs ( Figure 3).
  • These profiles may have, if necessary, a prior plastic buckling of the walls corresponding to the longitudinal edges of the cutouts 16 by bending.
  • these sections 13 to 15 forming the elements 2 no longer fulfill the elastic function of the structure and are only intended to form an energy absorbing element and the peak in force from the start of the buckling is eliminated.
  • the elements 2 can be constituted by a juxtaposition and / or a superposition of several simple sections, the parts of which provided with cutouts 16 extend parallel and / or perpendicularly to each other, in the same plane or in parallel and / or perpendicular planes.
  • cutouts 16 extend parallel and / or perpendicularly to each other, in the same plane or in parallel and / or perpendicular planes.
  • the leaves 15 are assembled together by stiffening connection profiles 17 and the central beams 13 and the stretchers 14 are also assembled together by other stiffening connection profiles 18, these sections 17 and 18 being advantageously connected to sections 13 to 15 at locations corresponding to an interval between two cuts 16 and at a frequency of one or more cuts.
  • cutouts 16 are defined in order to guarantee a preferred plastic buckling order of the different stages, this order being the same for all the elements 2 connected together.
  • the central beams 13 and the stretchers 14 are advantageously embedded and bearing in the head cross member 8 of the movable frame 4 and in the lower cross member 12 of the fixed frame 5 and the leaves 15 are embedded and bearing in the upper cross member 7 of the frame mobile 4 and in the arch 11 of the fixed frame 5, their fixing being provided by welding, by riveting, by bolting or the like.
  • the invention it is possible to carry out an energy absorption, over a considerable length, at one end of a vehicle striking another vehicle or an obstacle, said energy absorption being carried out by progressive plastic buckling of said profiles. in the form of a reduction in length and with a limitation of the transverse deformation.
  • Such buckling is made possible in particular by means of a rigid movable frame distributing the shock over all of the profiles. This distribution can also be improved by the joint implementation of anti-overlapping devices.
  • the elastic behavior of the structure guarantees the resistance to the stresses to which the vehicle is subjected under normal traffic conditions, as well as during light impacts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Vibration Dampers (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The present invention relates to an energy-absorbing structure, especially for railway vehicles. Structure, characterised in that it consists of a zone (1) deformable as a result of the dynamic plastic buckling of its structural elements (2), the said zone (1) being provided at at least one or at both ends of the vehicle (3) and advantageously forming a luggage compartment, an access platform or the like, with the possibility of two-way access, between a movable end frame (4) and a fixed frame (5) delimiting the ends of the passenger space. The invention can be used more particularly in the sector of the building of railway vehicles. <IMAGE>

Description

La présente invention concerne le domaine de la construction de véhicules, en particulierferroviaires, et notamment les structures d'extrémité libres de tous véhicules, et a pour objet une structure absorbeuse d'énergie pour de tels véhicules.The present invention relates to the field of vehicle construction, in particular rail, and in particular the free end structures of all vehicles, and relates to an energy absorbing structure for such vehicles.

Les véhicules ferroviaires existant actuellement sont généralement équipés à leurs parties d'extrémité d'une structure destinée à supporter les sollicitations que subit le véhicule en conditions normales de circulation et lors de faibles chocs.Railway vehicles currently existing are generally equipped at their end portions with a structure intended to withstand the stresses which the vehicle undergoes under normal traffic conditions and during light impacts.

Cependant, en cas de chocs importants, notamment à vitesse relativement élevée, les véhicules existants ne présentent pas de disposition de protection des passagers par déformation préférentielle d'une partie de leur structure, de sorte que lesdits passagers sont exposés à un risque important de dommages corporels en cas de tels chocs.However, in the event of significant shocks, in particular at relatively high speed, existing vehicles do not have a provision for protecting passengers by preferential deformation of part of their structure, so that said passengers are exposed to a significant risk of damage. injuries in the event of such shocks.

La présente invention a pour but de pallier ces inconvénients.The present invention aims to overcome these drawbacks.

Elle a, en effet, pour objet une structure absorbeuse d'énergie pour véhicules, en particulier ferroviaires, caractérisée en ce qu'elle consiste en une zone déformable par flambage plastique dynamique de ses éléments de structure, ladite zone étant prévue à au moins une ou aux deux extrémités du véhicule et formant avantageusement un compartiment à bagages, une plate-forme d'accès, ou analogue, avec possibilité d'accès bilatéral, entre un cadre mobile d'extrémité et un cadre fixe délimitant l'extrémité de l'espace voyageur.It has, in fact, for its object an energy absorbing structure for vehicles, in particular railway, characterized in that it consists of a zone deformable by dynamic plastic buckling of its structural elements, said zone being provided for at least one or at both ends of the vehicle and advantageously forming a luggage compartment, an access platform, or the like, with the possibility of bilateral access, between a movable end frame and a fixed frame delimiting the end of the traveler space.

L'invention sera mieux comprise, grâce à la description ci-après, qui se rapporte à un mode de réalisation préféré, donné à titre d'exemple non limitatif, et expliqué avec référence au dessin schématique annexé, dans lequel :

  • la figure 1 est une vue partielle en perspective d'une structure conforme à l'invention ;
  • la figure 2 est une vue en perspective d'un élément absorbeur d'énergie, et
  • la figure 3 représente, dans une vue analogue à celle de la figure 2, l'élément absorbeur après écrasement.
The invention will be better understood from the description below, which relates to a preferred embodiment, given by way of non-limiting example, and explained with reference to the appended schematic drawing, in which:
  • Figure 1 is a partial perspective view of a structure according to the invention;
  • FIG. 2 is a perspective view of an energy absorbing element, and
  • 3 shows, in a view similar to that of Figure 2, the absorbing element after crushing.

La structure absorbeuse d'énergie pour véhicules, en particulier ferroviaires, représentée à titre d'exemple à la figure 1 des dessins annexés, consiste en une zone 1 déformable par flambage plastique dynamique de ses éléments de structure 2, ladite zone 1 étant prévue à au moins une ou aux deux extrémités du véhicule 3 et formant avantageusement un compartiment à bagages, une plate-forme d'accès, ou analogue, avec possibilité d'accès bilatéral, entre un cadre mobile d'extrémité 4 et un cadre fixe 5 délimitant l'extrémité de l'espace voyageur.The energy absorbing structure for vehicles, in particular rail vehicles, shown by way of example in FIG. 1 of the accompanying drawings, consists of a zone 1 deformable by dynamic plastic buckling of its structural elements 2, said zone 1 being provided for at least one or both ends of the vehicle 3 and advantageously forming a luggage compartment, an access platform, or the like, with the possibility of bilateral access, between a mobile end frame 4 and a fixed frame 5 delimiting the end of the passenger area.

Le cadre mobile d'extrémité 4 est constitué par des montants anti-collision 6, par une traverse supérieure 7 et par une traverse de tête 8, sur laquelle sont fixés l'attelage 9, ainsi que les tampons 10 et avantageusement un dispositif d'antichevauchement garantissant une bonne répartition des efforts.The movable end frame 4 is constituted by anti-collision uprights 6, by an upper cross member 7 and by a head cross member 8, on which the hitch 9 is fixed, as well as the buffers 10 and advantageously a device for anti-overlap ensuring good distribution of forces.

L'attelage 9 et les tampons 10 sont de type connu et ne sont représentés sur le dessin annexé que par leur trait d'axe.The coupling 9 and the buffers 10 are of known type and are shown in the accompanying drawing only by their center line.

Les dispositifs d'antichevauchement ne sont non plus représentés au dessin annexé et peuvent être notamment du type décrit dans la demande de brevet français n° 91 11407.The anti-overlapping devices are also not shown in the accompanying drawing and may in particular be of the type described in French patent application No. 91 11407.

Le cadre fixe 5 se présente avantageusement sous forme d'un arceau rigide 11, en appui sur la section complète du véhicule 3 et relié à une traverse inférieure 12. Cette dernière peut, notamment, former une traverse pivot d'un véhicule ferroviaire.The fixed frame 5 is advantageously in the form of a rigid hoop 11, bearing on the complete section of the vehicle 3 and connected to a lower cross member 12. The latter may, in particular, form a pivot cross member of a railway vehicle.

Conformément à une caractéristique de l'invention, les éléments de structure 2 sont déformables suivant une direction prédéterminée et sont constitués par des profilés formant, respectivement, des longerons centraux 13 et des brancards 14 reliant la traverse de tête 8 du cadre mobile 4 à la traverse inférieure 12 du cadre fixe 5 et des battants 15 reliant la traverse supérieure 7 du cadre mobile 4 à l'arceau 11 du cadre fixe 5.According to a characteristic of the invention, the structural elements 2 are deformable in a predetermined direction and are formed by profiles forming, respectively, central beams 13 and stretchers 14 connecting the head cross member 8 of the movable frame 4 to the lower cross member 12 of the fixed frame 5 and leaves 15 connecting the upper cross member 7 of the movable frame 4 to the arch 11 of the fixed frame 5.

La zone déformable 1 est avantageusement destinée à réaliser une absorption d'énergie par flambage plastique des éléments de structure 2 sans avoir recours à des absorbeurs d'énergie rapportés à la structure du véhicule.The deformable zone 1 is advantageously intended to carry out an energy absorption by plastic buckling of the structural elements 2 without having recourse to energy absorbers added to the structure of the vehicle.

Les profilés constituant les éléments 2 formant les longerons centraux 13, les brancards 14 et les battants 15, sont des profilés 1 double âme et peuvent être réalisés par extrusion et usinage ou par mécano-soudure, les découpes 16 étant avantageusement réalisées par usinage.The profiles constituting the elements 2 forming the central beams 13, the stretchers 14 and the leaves 15, are profiles 1 double core and can be produced by extrusion and machining or by mechanical welding, the cutouts 16 being advantageously produced by machining.

A cet effet, les profilés 1 double âme constituant les éléments 2 sont conformés pour se déformer par flambage plastique orienté se réalisant par déformations successives dans l'axe longitudinal desdits profilés.For this purpose, the profiles 1 double core constituting the elements 2 are shaped to deform by oriented plastic buckling taking place by successive deformations in the longitudinal axis of said profiles.

En vue de l'obtention d'un tel flambage, les profilés formant les longerons centraux 13, les brancards 14 et les battants 15, sont avantageusement réalisés en un matériau ductile permettant un allongement important et sont munis, dans le plan de leur déformation préférentielle, de découpes 16. Ces découpes 16 se présentent, de préférence, sous forme de trous oblongs. Ainsi, la prévision des trous 16 permet de réaliser un affaiblissement des profilés sous une charge de compression et l'existence d'arcs de cercle aux extrémités desdites découpes 16 permet de diriger le flambage plastique desdits profilés perpendiculairement à l'axe longitudinal desdites découpes 16. Il en résulte que dans le mode de réalisation représenté au dessin annexé les parois verticales des profilés 13 à 15 ont tendance à se déformer au droit des découpes 16 suivant une série de plis symétriques correspondant chacun à une découpe. Cette série de plis permet, en fait, de réaliser une déformation et un flambage plastiques par étages, c'est-à-dire progressifs (figure 3).In order to obtain such buckling, the profiles forming the central beams 13, the stretchers 14 and the leaves 15, are advantageously made of a ductile material allowing a significant elongation and are provided, in the plane of their preferential deformation , of cutouts 16. These cutouts 16 are preferably in the form of oblong holes. Thus, the prediction of the holes 16 makes it possible to achieve a weakening of the profiles under a compression load and the existence of circular arcs at the ends of said cuts 16 makes it possible to direct the plastic buckling of said profiles perpendicular to the longitudinal axis of said cuts 16 It follows that in the embodiment shown in the accompanying drawing the vertical walls of the sections 13 to 15 tend to deform in line with the cutouts 16 in a series of symmetrical folds each corresponding to a cutout. This series of folds makes it possible, in fact, to carry out a plastic deformation and buckling by stages, that is to say progresses sifs (Figure 3).

Ces profilés peuvent présenter, le cas échéant, un flambage plastique dirigé préalable des parois correspondant aux bords longitudinaux des découpes 16 par cintrage. Dans un tel cas, ces profilés 13 à 15 formant les éléments 2 ne remplissent plus la fonction élastique de la structure et sont uniquement destinés à former un élément absorbeur d'énergie et le pic en effort du démarrage du flambage est supprimé.These profiles may have, if necessary, a prior plastic buckling of the walls corresponding to the longitudinal edges of the cutouts 16 by bending. In such a case, these sections 13 to 15 forming the elements 2 no longer fulfill the elastic function of the structure and are only intended to form an energy absorbing element and the peak in force from the start of the buckling is eliminated.

Conformément à une variante de réalisation de l'invention, les éléments 2 peuvent être constitués par une juxtaposition et/ou une superposition de plusieurs profilés simples, dont les parties munies de découpes 16 s'étendent parallèlement et/ou perpendiculairement entre elles, dans le même plan ou dans des plans parallèles et/ou perpendiculaires. Ainsi, il est possible de réaliser un élément de structure complexe capable d'absorber une très importante énergie de déformation.According to an alternative embodiment of the invention, the elements 2 can be constituted by a juxtaposition and / or a superposition of several simple sections, the parts of which provided with cutouts 16 extend parallel and / or perpendicularly to each other, in the same plane or in parallel and / or perpendicular planes. Thus, it is possible to produce a complex structural element capable of absorbing a very large deformation energy.

Afin d'éviter un flambage généralisé de chaque élément, les battants 15 sont assemblés entre eux par des profilés de liaison rigidificateurs 17 et les longerons centraux 13 et les brancards 14 sont également assemblés entre eux par d'autres profilés de liaison rigidificateurs 18, ces profilés 17 et 18 étant avantageusement reliés aux profilés 13 à 15 en des emplacements correspondant à un intervalle compris entre deux découpes 16 et à une fréquence d'une ou de plusieurs découpes.In order to avoid a general buckling of each element, the leaves 15 are assembled together by stiffening connection profiles 17 and the central beams 13 and the stretchers 14 are also assembled together by other stiffening connection profiles 18, these sections 17 and 18 being advantageously connected to sections 13 to 15 at locations corresponding to an interval between two cuts 16 and at a frequency of one or more cuts.

Ces découpes 16 sont définies afin de garantir un ordre de flambage plastique préférentiel des différents étages, cet ordre étant le même pour tous les éléments 2 reliés entre eux.These cutouts 16 are defined in order to guarantee a preferred plastic buckling order of the different stages, this order being the same for all the elements 2 connected together.

Il est également possible d'augmenter la rigidité transversale en tournant avantageusement les brancards 14 de 90° autour de leur axe longitudinal, de telle manière que leurs plans de déformation soient perpendiculaires à celui des longerons centraux 13.It is also possible to increase the transverse rigidity by advantageously turning the stretchers 14 by 90 ° around their longitudinal axis, so that their deformation planes are perpendicular to that of the central beams 13.

Les longerons centraux 13 et les brancards 14 sont avantageusement encastrés et en appui dans la traverse de tête 8 du cadre mobile 4 et dans la traverse inférieure 12 du cadre fixe 5 et les battants 15 sont encastrés et en appui dans la traverse supérieure 7 du cadre mobile 4 et dans l'arceau 11 du cadre fixe 5, leur fixation étant assurée par soudure, par rivetage, par boulonnage ou autre.The central beams 13 and the stretchers 14 are advantageously embedded and bearing in the head cross member 8 of the movable frame 4 and in the lower cross member 12 of the fixed frame 5 and the leaves 15 are embedded and bearing in the upper cross member 7 of the frame mobile 4 and in the arch 11 of the fixed frame 5, their fixing being provided by welding, by riveting, by bolting or the like.

Grâce à l'invention, il est possible de réaliser une absorption d'énergie, sur une longueur importante, à une extrémité d'un véhicule percutant un autre véhicule ou un obstacle, ladite absorption d'énergie étant réalisée par flambage plastique progressif desdits profilés sous forme d'une réduction en longueur et avec une limitation de la déformation transversale. Un tel flambage est notamment rendu possible par l'intermédiaire d'un cadre mobile rigide répartissant le choc sur l'ensemble des profilés. Cette répartition peut d'ailleurs être améliorée par mise en oeuvre conjointe de dispositifs d'antichevauchement.Thanks to the invention, it is possible to carry out an energy absorption, over a considerable length, at one end of a vehicle striking another vehicle or an obstacle, said energy absorption being carried out by progressive plastic buckling of said profiles. in the form of a reduction in length and with a limitation of the transverse deformation. Such buckling is made possible in particular by means of a rigid movable frame distributing the shock over all of the profiles. This distribution can also be improved by the joint implementation of anti-overlapping devices.

En outre, le comportement élastique de la structure garantit la tenue aux sollicitations que subit le véhicule en conditions normales de circulation, ainsi que lors de faibles chocs.In addition, the elastic behavior of the structure guarantees the resistance to the stresses to which the vehicle is subjected under normal traffic conditions, as well as during light impacts.

Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et représenté au dessin annexé. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention.Of course, the invention is not limited to the embodiment described and shown in the accompanying drawing. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.

Claims (15)

1. Structure absorbeuse d'énergie, en particulier pour véhicules ferroviaires, caractérisée en ce qu'elle consiste en une zone (1) déformable par flambage plastique dynamique de ses éléments de structure (2), ladite zone (1) étant prévue à au moins une ou aux deux extrémités du véhicule (3) et formant avantageusement un compartiment à bagages, une plate-forme d'accès, ou analogue, avec possibilité d'accès bilatéral, entre un cadre mobile d'extrémité (4) et un cadre fixe (5) délimitant l'extrémité de l'espace voyageur.1. Energy absorbing structure, in particular for railway vehicles, characterized in that it consists of a zone (1) deformable by dynamic plastic buckling of its structural elements (2), said zone (1) being provided for at at least one or both ends of the vehicle (3) and advantageously forming a luggage compartment, an access platform, or the like, with the possibility of bilateral access, between a mobile end frame (4) and a frame fixed (5) delimiting the end of the passenger space. 2. Structure, suivant la revendication 1, caractérisée en ce que le cadre mobile d'extrémité (4) est constitué par des montants anti-collision (6), par une traverse supérieure (7) et par une traverse de tête (8), sur laquelle sont fixés l'attelage (9), ainsi que les tampons (10) et avantageusement un dispositif d'antichevauchement garantissant une bonne répartition des efforts.2. Structure according to claim 1, characterized in that the movable end frame (4) is constituted by anti-collision uprights (6), by an upper cross member (7) and by a head cross member (8) , on which are fixed the coupling (9), as well as the buffers (10) and advantageously an anti-overlapping device guaranteeing a good distribution of the forces. 3. Structure, suivant la revendication 1, caractérisée en ce que le cadre fixe (5) se présente avantageusement sous forme d'un arceau rigide (11) en appui sur la section complète du véhicule (3) et relié à une traverse inférieure (12).3. Structure according to claim 1, characterized in that the fixed frame (5) is advantageously in the form of a rigid hoop (11) bearing on the complete section of the vehicle (3) and connected to a lower crossmember ( 12). 4. Structure, suivant la revendication 3, caractérisée en ce que la traverse inférieure est la traverse pivot d'un véhicule ferroviaire.4. Structure according to claim 3, characterized in that the lower cross member is the pivot cross member of a railway vehicle. 5. Structure, suivant l'une quelconque des revendications 1 à 3, caractérisée en ce que les éléments de structure (2) sont déformables suivant une direction prédéterminée et sont constitués par des profilés 1 double âme formant, respectivement, des longerons centraux (13) et des brancards (14) reliant la traverse de tête (8) du cadre mobile (4) à la traverse inférieure (12) du cadre fixe (5) et des battants (15) reliant la traverse supérieure (7) du cadre mobile (4) à l'arceau (11) du cadre fixe (5).5. Structure according to any one of claims 1 to 3, characterized in that the structural elements (2) are deformable in a predetermined direction and are formed by profiles 1 double core forming, respectively, central beams (13 ) and stretchers (14) connecting the head cross member (8) of the movable frame (4) to the lower cross member (12) of the fixed frame (5) and leaves (15) connecting the upper cross member (7) of the movable frame (4) to the arch (11) of the fixed frame (5). 6. Structure, suivant la revendication 5, caractérisée en ce que les profilés constituant les éléments (2) sont conformés pour se déformer par flambage plastique orienté se réalisant par déformations successives dans l'axe longitudinal desdits profilés.6. Structure according to claim 5, characterized in that the profiles constituting the elements (2) are shaped to deform by oriented plastic buckling taking place by successive deformations in the longitudinal axis of said profiles. 7. Structure, suivant l'une quelconque des revendications 5 et 6, caractérisée en ce que les profilés formant les longerons centraux (13), les brancards (14) et les battants (15) sont avantageusement réalisés en un matériau ductile permettant un allongement important et sont munis, dans le plan de leur déformation préférentielle, de découpes (16).7. Structure according to any one of claims 5 and 6, characterized in that the profiles forming the central beams (13), the stretchers (14) and the leaves (15) are advantageously made of a ductile material allowing elongation important and are provided, in the plane of their preferential deformation, with cutouts (16). 8. Structure, suivant la revendication 7, caractérisée en ce que les découpes (16) se présentent, de préférence, sous forme de trous oblongs.8. Structure according to claim 7, characterized in that the cutouts (16) are preferably in the form of oblong holes. 9. Structure, suivant l'une quelconque des revendications 1 et 5 à 8, caractérisée en ce que les profilés constituant les éléments (2) formant les longerons centraux (13), les brancards (14) et les battants (15) sont réalisés par extrusion et usinage ou par mécano-soudure, les découpes (16) étant avantageusement réalisées par usinage.9. Structure according to any one of claims 1 and 5 to 8, characterized in that the sections constituting the elements (2) forming the central beams (13), the stretchers (14) and the leaves (15) are made by extrusion and machining or by mechanical welding, the cutouts (16) being advantageously made by machining. 10. Structure, suivant l'une quelconque des revendications 1 et 5 à 9, caractérisée en ce que les profilés formant les éléments (2) présentent un flambage plastique dirigé préalable des parois correspondant aux bords longitudinaux des découpes (16) par cintrage.10. Structure according to any one of claims 1 and 5 to 9, characterized in that the sections forming the elements (2) have a prior plastic buckling of the walls corresponding to the longitudinal edges of the cutouts (16) by bending. 11. Structure, suivant l'une quelconque des revendications 1 et 5 à 10, caractérisée en ce que les éléments (2) sont constitués par une juxtaposition et/ou une superposition de plusieurs profilés simples, dont les parties munies de découpes (16) s'étendent parallèlement et/ou perpendiculairement entre elles, dans le même plan ou dans des plans parallèles et/ou perpendiculaires.11. Structure according to any one of claims 1 and 5 to 10, characterized in that the elements (2) consist of a juxtaposition and / or a superposition of several simple profiles, including the parts provided with cutouts (16) extend parallel and / or perpendicular to each other, in the same plane or in parallel and / or perpendicular planes. 12. Structure, suivant l'une quelconque des revendications 5, 7 et 9, caractérisée en ce que les battants (15) sont assemblés entre eux par des profilés de liaison rigidificateurs (17) et les longerons centraux (13) et les brancards (14) sont également assemblés entre eux par d'autres profilés de liaison rigidificateurs (18), ces profilés (17 et 18) étant avantageusement reliés aux profilés (13 à 15) en des emplacements correspondant à un intervalle compris entre deux découpes (16) et à une fréquence d'une ou de plusieurs découpes.12. Structure according to any one of claims 5, 7 and 9, characterized in that the leaves (15) are assembled together by stiffening connecting profiles (17) and the central beams (13) and the stretchers ( 14) are also assembled together by other stiffening connection profiles (18), these profiles (17 and 18) being advantageously connected to the profiles (13 to 15) at locations corresponding to an interval between two cutouts (16) and at a frequency of one or more cuts. 13. Structure, suivant la revendication 12, caractérisée en ce que les découpes (16) sont définies afin de garantir un ordre de flambage plastique préférentiel des différents étages, cet ordre étant le même pour tous les éléments (2) reliés entre eux.13. Structure according to claim 12, characterized in that the cutouts (16) are defined in order to guarantee a preferred order of plastic buckling of the different stages, this order being the same for all the elements (2) connected together. 14. Structure, suivant l'une quelconque des revendications 5, 7, 9 et 12, caractérisée en ce que les brancards (14) sont tournés de 90° autour de leur axe longitudinal, de telle manière que leurs plans de déformation soient perpendiculaires à celui des longerons centraux (13).14. Structure according to any one of claims 5, 7, 9 and 12, characterized in that the stretchers (14) are rotated by 90 ° around their longitudinal axis, so that their deformation planes are perpendicular to that of the central beams (13). 15. Structure, suivant l'une quelconque des revendications 5, 7, 9, 12 et 14, caractérisée en ce que les longerons centraux (13) et les brancards (14) sont avantageusement encastrés et en appui dans la traverse de tête (8) du cadre mobile (4) et dans la traverse inférieure (12) du cadre fixe (5) et les battants (15) sont encastrés et en appui dans la traverse supérieure (7) du cadre mobile (4) et dans l'arceau (11) du cadre fixe (5), leur fixation étant assurée par soudure, par rivetage, par boulonnage ou autre.15. Structure according to any one of claims 5, 7, 9, 12 and 14, characterized in that the central beams (13) and the stretchers (14) are advantageously embedded and resting in the head cross member (8 ) of the movable frame (4) and in the lower cross member (12) of the fixed frame (5) and the leaves (15) are embedded and in abutment in the upper cross member (7) of the movable frame (4) and in the hoop (11) of the fixed frame (5), their fixing being ensured by welding, by riveting, by bolting or the like.
EP93440051A 1992-07-28 1993-06-30 Structure for energy absorption, especially for railway vehicles Expired - Lifetime EP0581707B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9209503 1992-07-28
FR9209503A FR2694255B1 (en) 1992-07-28 1992-07-28 Energy absorbing structure, in particular for railway vehicles.

Publications (2)

Publication Number Publication Date
EP0581707A1 true EP0581707A1 (en) 1994-02-02
EP0581707B1 EP0581707B1 (en) 1997-08-20

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Application Number Title Priority Date Filing Date
EP93440051A Expired - Lifetime EP0581707B1 (en) 1992-07-28 1993-06-30 Structure for energy absorption, especially for railway vehicles

Country Status (5)

Country Link
EP (1) EP0581707B1 (en)
AT (1) ATE157057T1 (en)
DE (1) DE69313214T2 (en)
ES (1) ES2108853T3 (en)
FR (1) FR2694255B1 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408875B (en) * 2000-02-18 2002-03-25 Siemens Sgp Verkehrstech Gmbh DEVELOPMENT ELEMENT OF A RAIL VEHICLE
JP2003095094A (en) * 2002-09-11 2003-04-03 Hitachi Ltd Rail rolling stock
GB2411631A (en) * 2004-03-01 2005-09-07 Bombardier Transp Gmbh Shock absorbing girder for supporting a railway vehicle body
JP2005239160A (en) * 2005-05-09 2005-09-08 Hitachi Ltd Rail rolling stock
WO2005085033A1 (en) * 2004-03-01 2005-09-15 Bombardier Transportation Gmbh Deformable frame for a vehicle cabin
JP2007326550A (en) * 2006-05-10 2007-12-20 Hitachi Ltd Collision energy absorbing device and railway vehicle equipped with the same
EP1897775A1 (en) 2006-09-08 2008-03-12 Hitachi, Ltd. Railway vehicle with energy absorbing structure
JP2008126856A (en) * 2006-11-21 2008-06-05 Hitachi Ltd Vehicle
EP1873037A3 (en) * 2006-05-10 2008-06-25 Hitachi, Ltd. Collision energy absorbing device and railway vehicle having the device
WO2011142208A1 (en) * 2010-05-10 2011-11-17 日本車輌製造株式会社 Railroad vehicle
JP2011235732A (en) * 2010-05-10 2011-11-24 Nippon Sharyo Seizo Kaisha Ltd Railroad vehicle
EP2371651A3 (en) * 2010-03-25 2012-09-19 Hitachi, Ltd. Railway vehicle having shock absorbing structures
WO2013161610A1 (en) * 2012-04-25 2013-10-31 株式会社 日立製作所 Railroad vehicle body structure having shock absorbing structure
WO2014079652A1 (en) * 2012-11-26 2014-05-30 Siemens Aktiengesellschaft Carriage body part
US20150203129A1 (en) * 2012-07-12 2015-07-23 Kawasaki Jukogyo Kabushiki Kaisha Railcar
CN105253248A (en) * 2014-07-10 2016-01-20 姜立平 Electric-structure crashproof frame body

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2765543B1 (en) 1997-07-02 2005-01-07 Alstom Ddf RAILWAY VEHICLE COMPRISING AT LEAST ONE INTERCHANGEABLE END MODULE

Citations (3)

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Publication number Priority date Publication date Assignee Title
GB318133A (en) * 1928-08-28 1930-08-07 Max Tessmer Improved means for lessening the effects of collisions between railway vehicles
DE2509351A1 (en) * 1974-03-04 1975-09-11 Budd Co DEVICE FOR CUSHIONING IMPACT ENERGY
US4702515A (en) * 1985-06-17 1987-10-27 Toyota Jidosha Kabushiki Kaisha Side member of motor vehicle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB318133A (en) * 1928-08-28 1930-08-07 Max Tessmer Improved means for lessening the effects of collisions between railway vehicles
DE2509351A1 (en) * 1974-03-04 1975-09-11 Budd Co DEVICE FOR CUSHIONING IMPACT ENERGY
US4702515A (en) * 1985-06-17 1987-10-27 Toyota Jidosha Kabushiki Kaisha Side member of motor vehicle

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408875B (en) * 2000-02-18 2002-03-25 Siemens Sgp Verkehrstech Gmbh DEVELOPMENT ELEMENT OF A RAIL VEHICLE
JP2003095094A (en) * 2002-09-11 2003-04-03 Hitachi Ltd Rail rolling stock
GB2411631A (en) * 2004-03-01 2005-09-07 Bombardier Transp Gmbh Shock absorbing girder for supporting a railway vehicle body
WO2005085033A1 (en) * 2004-03-01 2005-09-15 Bombardier Transportation Gmbh Deformable frame for a vehicle cabin
JP2005239160A (en) * 2005-05-09 2005-09-08 Hitachi Ltd Rail rolling stock
JP2007326550A (en) * 2006-05-10 2007-12-20 Hitachi Ltd Collision energy absorbing device and railway vehicle equipped with the same
EP1873037A3 (en) * 2006-05-10 2008-06-25 Hitachi, Ltd. Collision energy absorbing device and railway vehicle having the device
EP1897775A1 (en) 2006-09-08 2008-03-12 Hitachi, Ltd. Railway vehicle with energy absorbing structure
JP2008062817A (en) * 2006-09-08 2008-03-21 Hitachi Ltd Railway vehicle
JP2008126856A (en) * 2006-11-21 2008-06-05 Hitachi Ltd Vehicle
EP2371651A3 (en) * 2010-03-25 2012-09-19 Hitachi, Ltd. Railway vehicle having shock absorbing structures
WO2011142208A1 (en) * 2010-05-10 2011-11-17 日本車輌製造株式会社 Railroad vehicle
JP2011235732A (en) * 2010-05-10 2011-11-24 Nippon Sharyo Seizo Kaisha Ltd Railroad vehicle
US9090266B2 (en) 2010-05-10 2015-07-28 Nippon Sharyo, Ltd. Railway vehicle
WO2013161610A1 (en) * 2012-04-25 2013-10-31 株式会社 日立製作所 Railroad vehicle body structure having shock absorbing structure
GB2515422A (en) * 2012-04-25 2014-12-24 Hitachi Ltd Railroad vehicle body structure having shock absorbing structure
GB2515422B (en) * 2012-04-25 2019-12-11 Hitachi Ltd Railroad vehicle body structure having shock absorbing structure
US20150203129A1 (en) * 2012-07-12 2015-07-23 Kawasaki Jukogyo Kabushiki Kaisha Railcar
US9718481B2 (en) * 2012-07-12 2017-08-01 Kawasaki Jukogyo Kabushiki Kaisha Railcar
WO2014079652A1 (en) * 2012-11-26 2014-05-30 Siemens Aktiengesellschaft Carriage body part
CN105253248A (en) * 2014-07-10 2016-01-20 姜立平 Electric-structure crashproof frame body

Also Published As

Publication number Publication date
FR2694255B1 (en) 1994-10-28
ES2108853T3 (en) 1998-01-01
EP0581707B1 (en) 1997-08-20
FR2694255A1 (en) 1994-02-04
ATE157057T1 (en) 1997-09-15
DE69313214D1 (en) 1997-09-25
DE69313214T2 (en) 1998-04-30

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