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EP4052987B1 - Structure de plancher d'un véhicule ferroviaire et procédé de fabrication d'une telle structure de plancher - Google Patents

Structure de plancher d'un véhicule ferroviaire et procédé de fabrication d'une telle structure de plancher Download PDF

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Publication number
EP4052987B1
EP4052987B1 EP21161031.6A EP21161031A EP4052987B1 EP 4052987 B1 EP4052987 B1 EP 4052987B1 EP 21161031 A EP21161031 A EP 21161031A EP 4052987 B1 EP4052987 B1 EP 4052987B1
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EP
European Patent Office
Prior art keywords
interlocking
floor
transverse structural
fasteners
floor panel
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.)
Active
Application number
EP21161031.6A
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German (de)
English (en)
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EP4052987A1 (fr
EP4052987A8 (fr
Inventor
Martin Laflamme
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.)
Alstom Holdings SA
Original Assignee
Bombardier Transportation GmbH
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 Bombardier Transportation GmbH filed Critical Bombardier Transportation GmbH
Priority to EP21161031.6A priority Critical patent/EP4052987B1/fr
Priority to ES21161031T priority patent/ES2953282T3/es
Publication of EP4052987A1 publication Critical patent/EP4052987A1/fr
Publication of EP4052987A8 publication Critical patent/EP4052987A8/fr
Application granted granted Critical
Publication of EP4052987B1 publication Critical patent/EP4052987B1/fr
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Classifications

    • 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
    • B61D17/10—Floors

Definitions

  • the present invention generally relates to the field of car bodies of rail vehicles. More specifically, the invention relates to a floor structure of a rail vehicles which is removably fixed to a supporting structure.
  • Passenger rail cars are typically designed to last some 40 years. This is however only partially true as the vehicle will normally undergo a major refurbishment around its mid-life when many components will be changed. Passenger floors, especially those of subways, are subjected to heavy wear and are therefore part of the components required to be replaced during the refurbishment process. This however proves to be a work-intensive process since the passenger floor of a vehicle is typically fixed to a supporting structural portion of the railcar body using a thick layer of adhesive. Indeed, not only must the passenger floor be separated from the supporting structure by cutting the adhesive, but any remains of the adhesive must also be removed from the supporting structure in preparation for receiving a new passenger floor.
  • DD288130 relates to an elastic floor fastening, in particular for rail vehicles.
  • Vertical ball studs are vertically positioned and fixed to the underframe.
  • the ball studs are adjustable in height and are received in vibrationdamping mouldings fixed to the floor.
  • DE102010041196 discloses a car body of a rail vehicle, comprising an underframe and a support element for the floor of the car body secured to the underframe by a clip connection.
  • the support element is a hollow profile provided with a central retaining opening for cooperating with a clip element, which projects upward from the underframe.
  • the clip element is designed as an integral component of a cross beam of the underframe.
  • US5287813 discloses a coach body construction with an upper structure having extruded profiles, which are connected detachably to one another by corner connectors and are made of an aluminum alloy, and a lower structure.
  • the lower structure is composed of longitudinal and transverse supports which are made of an extruded aluminum alloy and are detachably connected to one another and to the upper structure by corner connectors.
  • the invention provides the advantages of providing a floor which may be repeatably installed and removed without leaving residues on a supporting structure of the car body.
  • a floor structure of a rail vehicle car body where the car body is provided with a left and a right sidewalls and where the floor structure comprises a left and a right longitudinal beams, a plurality of transverse structural members, a floor panel and a plurality of fasteners.
  • the left and the right longitudinal beams extend longitudinally along the respective left and right sidewalls of the car body.
  • Each transverse structural member is directly and permanently fixed at its one end to the left longitudinal beam and at its other end to the right longitudinal beam.
  • the transverse structural members extend in a transverse direction of the car body.
  • Each transverse structural member is placed at a predetermined longitudinal distance from each other.
  • Each fastener has a first and a second interlocking halves.
  • Each fastener is of the non-permanent, reclosable, pressure-interlocking type, thereby having the capability of being fastened and unfastened repeatably.
  • Each transverse structural member is provided on its operatively mating surface with one of the first interlocking halves of the plurality of fasteners. These first interlocking halves are positioned at a predetermined transversal distance from the left longitudinal beam.
  • the floor panel is provided on its underside with the second interconnecting halves of the plurality of fasteners. These second interlocking halves are installed, longitudinally, at the predetermined longitudinal distance from each other and, transversely, at the predetermined traversal distance from the left longitudinal beam.
  • each second interlocking half corresponds to a position, within the rail car, of its respective interlocking first half installed on the mating surfaces of the transversal structural members.
  • the floor panel is removably, and directly, attached atop the plurality of transverse structural members through interlocking the corresponding first and second halves of each one of the plurality of fasteners.
  • each transverse structural member may be directly fixed to the left and right longitudinal beams using a permanent low-heat joining process such as a laser welding process or a friction-stir welding process, thereby defining a supporting structure having a substantially flat imaginary mounting plane.
  • a permanent low-heat joining process such as a laser welding process or a friction-stir welding process
  • the mounting plane of this supporting structure may have a flatness tolerance of 3 mm per meter.
  • the floor panel may be made of a plurality of floor panel portions which are each attached to at least two transverse structural members.
  • the plurality of fasteners may be a hook and loop reclosable fastener.
  • the first interlocking half may be either one of the hook and loop while the second interlocking portion is the other of the hook and loop.
  • the first and second interlocking halves may be of the mushroom-shaped head type.
  • each first interlocking half affixed to one of the plurality of transverse structural members may run a majority of a length of the transverse structural member.
  • each transverse structural member may be provided with a plurality of first interlocking halves disposed along a length of the transverse structural member at a predetermined pitch.
  • the underside of the floor panel may be provided with second interlocking halves running along a transversal direction of the floor panel at the predetermined pitch so that each second interlocking half may interlock with its corresponding first interlocking half.
  • damping elements may be fixed to each of the plurality of transverse structural members in between the plurality of first interlocking halves disposed along the length of each one of the plurality of transverse structural members.
  • a sub-floor distance between the underside of the floor panel and a top surface of each one of the plurality of transverse structural members may be less than a thickness of the floor panel itself.
  • This sub-floor distance may be substantially that of a thickness of one interlocked fastener which is typically less than 10mm.
  • the floor structure may further comprise a left and a right baseboards attached respectively to the left and the right sidewalls at a junction of the floor panel and of the respective sidewall.
  • the baseboards are operative to vertically lock the floor panel in place.
  • a rail vehicle integrating the floor structure described above.
  • a method of manufacturing a floor structure for a rail car having a left and a right sidewalls comprises
  • the joining may further comprise using a low-heat joining process selected from the list consisting of laser welding and friction-stir welding.
  • a low-heat joining process selected from the list consisting of laser welding and friction-stir welding.
  • the attaching may further comprise interlocking together two compatible mushroom-head type of interlocking halves.
  • the attaching may further comprise locating the floor panel at a sub-floor distance defined between the floor panel and each one of the plurality of transverse structural members that is less than a thickness of the floor panel.
  • this sub-floor distance may substantially correspond to a thickness of one interlocked fastener.
  • the present invention relates to a floor structure for a rail car where the floor structure may be easily installed and then removed when damaged and which has a low profile.
  • Figure 1 depicts a car body 10 of a rail vehicle. So that a clear view of a passenger compartment 12 of the car body 10 is possible, end walls of the car body 10 are not shown.
  • the car body 10 is made of a floor structure 14, left and right sidewalls 16, end walls (not shown) and a roof 18.
  • a supporting structure 19 of the floor structure 14 comprises two longitudinal beams 20, one along the left sidewall 16 of the car body and one along a right sidewall 16, as well as a plurality of transverse structural members 22.
  • the transverse structural members 22 are directly and permanently fixed at their extremities to a different one of the left and right longitudinal beams 20. Although the transverse structural members 22 are depicted as extending transversally to the car body 10, they could extend at an angle other than 90 degrees to the longitudinal beams 20.
  • Each transverse structural member 22 is placed along the longitudinal beams 20 at a predetermined longitudinal distance from each other. This longitudinal distance may be constant or may vary (constant or variable pitch) along a length of the rail car body 10.
  • the longitudinal beams 20 and the transverse structural members 22 are typically either all made of steel or all made of aluminum.
  • the transverse structural members 22 are fixed to both longitudinal beams using a low-heat welding process such as a laser welding process or a friction-stir welding process.
  • These low-heat generating welding processes which may be automated, advantageously only produce low to no deformation in the welded supporting structure 19. At least, these low-heat generating welding processes produce less deformation in the welded supporting structure than conventional welding processes, such as TIG or MIG welding, producing more heat. Consequently, a mounting plane 26 of the supporting structure 19 may be produced with a flatness tolerance within 3mm per meter. This level of flatness is important for the floor 24 to be directly mounted to the supporting structure 19 using fasteners 28 as will be further described below. In this context, directly means that the floor 24 is mounted to the supporting structure19 solely through the fasteners 28 and that no other intermediate mounting structure, especially of the resilient type, is used.
  • the floor 24 is typically made of a sandwich construction where two skins are placed on each side of a core.
  • the skins may be made of a metallic material or of laminated fiber-reinforced type of material bonded to the core.
  • the floor 24 may be made of one or more floor panels 30.
  • one or more floor panels 30 may make up the whole floor 24.
  • the floor 24 is made of many floor panels 30.
  • Each floor panel 30 is attached to at least two transverse structural members 22. In the case where more than one floor panel 30 are used, these floor panels 30 are juxtaposed to each other and a sealant may be used at their junction to prevent air or water infiltrations, or from other environmental element.
  • the fasteners 28 are of the non-permanent, releasable and reclosable type.
  • the fasteners 28 thereby have the capability of being closed, opened, and reclosed repeatably without damaging either themselves or the fastened components, in the present case the floor 24 (or floor panels 30) and the supporting structure 19 and more precisely the transverse structural members 22 and optionally also the longitudinal beams 20.
  • the fasteners 28 are therefore used to attach directly the floor 24 to the supporting structure 19.
  • the fasteners 28 are made of two interlocking halves which can be referred to as a first and second interlocking halves, or male/female interlocking halves, or other appropriate reference for the type of fastener used.
  • the interlocking halves will be referenced to as the first interlocking half 32 and the second interlocking half 34.
  • the fasteners 28 are of the type which are interlocked using pressure.
  • pressure interlocked fasteners may be a pressure/snap button/fastener or a reclosable fastener such as a Velcro ® hook and loop fastener or a 3M TM Dual Lock TM reclosable fastener having a mushroom-shaped head interface.
  • the first interlocking half 32 could be a male portion of the snap button while the second interlocking half 34 could be the female portion of the snap button, or vice-versa.
  • the first interlocking half 32 may be either a hook portion of a hook and loop fasteners while the second interlocking portion 34 may be the loop portion, or vice versa.
  • a reclosable fastener such as the 3M TM Dual Lock TM reclosable fastener
  • both the first interlocking half 32 and the second interlocking half 34 are similar in that they are made of similar strips of mushroom-shaped heads. For the present application, it has been found that the use of 3M TM Dual Lock TM reclosable fastener performs adequately.
  • the term non-permanent is understood to mean that the fasteners 28 are designed to be non-destructively releasable.
  • the fasteners 28 allow the floor panels 30 to be detached from the supporting structure 19 without damaging neither of the fasteners 28, the floor panels 30 nor the supporting structure 19. This is in opposition to the use of rivets or an of adhesive, for example, in the role of the fastener where at least the fastener and possibly at least one of the floor panels 30 and the supporting structure 19 would get damaged when trying to remove the floor 24 from the supporting structure 19.
  • Each transverse structural member 22, and optionally also each longitudinal beam 20, is provided on its operatively mating surface 36 with at least one first interlocking half 32.
  • the first interlocking halves affixed to transverse structural members may run a majority of a length of the transverse structural member.
  • many shorter first interlocking halves 32 may be disposed along the length of the transverse structural members at a predetermined distance from either the left or the right longitudinal beams 20, or at a predetermined pitch.
  • the mating surface 36 corresponds to the physical surfaces on which the first interlocking halves are fixed.
  • the mounting plane 26 is a flat plane representing the plane on which the floor 24 would rest when mounted on the supporting structure 19 which may be distorted due to its manufacturing process. This distortion must be kept under a certain limit so that the mounting plane 26 lies within an acceptable flatness tolerance of the mating surface 36. If the supporting structure 26 is manufactured without any distortion, then the mounting plane 26 and the mating surface 36 are coplanar.
  • Each floor panel 30 making up the floor 24 is provided on its underside with second interconnecting halves 34 of the fasteners, corresponding to the installed first interconnecting halves 32 installed on the supporting structure 19.
  • These second interlocking halves 34 are installed, in the longitudinal direction of the car body 10, at the same predetermined longitudinal distance from each other than those of the first interlocking halves 32.
  • the second interlocking halves 34 are installed, in the transverse direction of the car body 10, at the predetermined traversal distance from a reference point such as the left or the right longitudinal beam 20.
  • each second interlocking half 34 corresponds to a position, within the rail car, of its respective first interlocking half 32 installed on the mating surfaces 36 of the transversal structural members 22, and of the longitudinal beams 20 if so equipped.
  • the floor panels 30 may therefore be directly and removably or releasably attached atop the supporting structure 19 through interlocking the corresponding first and second interlocking halves 32, 34 of each fastener 28.
  • a sub-floor distance between the underside of the floor panels 30 and a top surface of the transverse structural members 22 may be kept very small, essentially that of one fastened fastener 28.
  • This sub-floor distance may be typically less than 20 mm (0.79 inch), even less than 10 mm (0.39 inch). This sub-floor distance may therefore be less than a thickness of one floor panel 30, which is typically 25,4 mm or more.
  • damping elements 38 may be fixed to at least some of the transverse structural members 22 in between the first interlocking halves 32 disposed along the length of the transverse structural members 22. These damping elements 38 are typically made of a resilient material having vibration-absorbing properties.
  • baseboards 40 may be installed at the junction of each sidewalls 16 with the one or more floor panel 30. Further to the fasteners 28, these baseboards 40 contribute to further vertically retain the floor panel 30 in place against the supporting structure 19.
  • the floor structure 14 may be manufactured by using the following method:
  • the method of manufacturing the floor structure 14 may further comprise installing the damping elements 38 on the transverse structural members 22 beside the first interlocking half 32 fixed to the transverse structural members 22.
  • a further option may be that the attaching step may comprise locating the one or more floor panel 30 at the sub-floor distance which is less than the thickness of the floor panel 30.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Claims (15)

  1. Structure de plancher (14) d'une caisse de wagon de véhicule ferroviaire (10) ayant des parois latérales gauche et droite (16), la structure de plancher (14) comprenant :
    une poutre longitudinale gauche (20) et une poutre longitudinale droite (20), les poutres longitudinales gauche et droite (20) s'étendant longitudinalement le long des parois latérales gauche et droite respectives (16) de la caisse de wagon (10) ;
    une pluralité d'éléments structurels transversaux (22), chaque élément structurel transversal (22) étant fixé directement et de manière permanente à son extrémité à la poutre longitudinale gauche (20) et à son autre extrémité à la poutre longitudinale droite (20), les éléments structurels transversaux (22) s'étendant dans une direction transversale de la caisse de wagon (10), chaque élément structurel transversal (22) étant placé à une distance longitudinale prédéterminée les uns des autres ; et
    un panneau de plancher (30), caractérisé en ce que la structure de plancher comprend une pluralité de fixations (28), la pluralité de fixations (28) étant le type non-permanent, refermable, à interverrouillage de pression, chaque fixation (28) ayant une première et une seconde moitiés d'interverrouillage (32, 34), chaque élément structurel transversal (22) étant prévu sur une surface d'accouplement fonctionnelle avec l'une des premières moitiés d'interverrouillage (32) de la pluralité de fixations (28) à une distance transversale prédéterminée de la poutre longitudinale gauche (20), le panneau de plancher étant prévu sur sa face inférieure avec les secondes moitiés d'interverrouillage (34) de la pluralité de fixations (28), les secondes moitiés d'interverrouillage (34) étant installées longitudinalement à la distance longitudinale prédéterminée les unes des autres et installées transversalement à la distance de traversée prédéterminée de la poutre longitudinale gauche (20), de manière à correspondre à une position à l'intérieur du wagon ferroviaire de leur première moitié d'interverrouillage transversale respective (32) de la pluralité de fixations (28), le panneau de plancher (30) étant fixé de façon amovible et directement au-dessus de la pluralité d'éléments structurels transversaux (22) en emboîtant les première et seconde moitiés d'interverrouillage (32, 34) correspondantes de chacun de la pluralité de fixations (28).
  2. Structure de plancher (14) selon la revendication 1, dans laquelle chaque élément structurel transversal (22) est directement fixé aux poutres longitudinales gauche et droite (20) à l'aide d'un procédé de jonction à faible chaleur permanent choisi dans la liste constituée d'un procédé de soudage au laser et un procédé de soudage par friction-malaxage, définissant ainsi une structure de support (19) ayant un plan de montage sensiblement plat (26).
  3. Structure de plancher (14) selon la revendication 2, dans laquelle une tolérance de planéité du plan de montage (26) est de moins de 3 mm par mètre.
  4. Structure de plancher (14) selon l'une quelconque des revendications précédentes, dans laquelle les première et seconde moitiés d'interverrouillage (32, 34) de la pluralité de fixations (28) sont du type de tête en forme de champignon compatible.
  5. Structure de plancher (14) selon l'une quelconque des revendications précédentes, dans laquelle chaque élément structurel transversal (22) est pourvu d'une pluralité de premières moitiés d'interverrouillage (32) disposées le long d'une longueur de l'élément structurel transversal (22) à un pas prédéterminé, et le panneau de plancher (30) étant pourvu de secondes moitiés d'interverrouillage (34) s'étendant le long d'une direction transversale du panneau de plancher (30) au pas prédéterminé de manière à emboîter leur première moitié d'interverrouillage correspondante (32).
  6. Structure de plancher (14) selon la revendication 5, comprenant en outre des éléments d'amortissement (38) fixés à chacun de la pluralité d'éléments structurels transversaux (22) entre la pluralité de premières moitiés d'interverrouillage (32) disposées le long de la longueur de chacun de la pluralité d'éléments structurels transversaux (22).
  7. Structure de plancher (14) selon l'une quelconque des revendications 1 à 6, dans laquelle une distance sous-plancher entre le panneau de plancher (30) et chacun de la pluralité d'éléments structurels transversaux (22) est inférieure à une épaisseur du panneau de plancher (30).
  8. Structure de plancher (14) selon l'une quelconque des revendications 1 à 6, dans laquelle une distance de sous-plancher entre le panneau de plancher (30) et chacun de la pluralité d'éléments structurels transversaux (22) est sensiblement celle d'une épaisseur d'une fixation imbriquée (28).
  9. Structure de plancher (14) selon l'une quelconque des revendications précédentes, comprenant en outre des panneaux de base gauche et droite (40) fixés respectivement aux parois latérales gauche et droite (16) au niveau d'une jonction du panneau de plancher (30) et de la paroi latérale respective (16), les panneaux de base (40) étant opérationnels pour s'emboîter verticalement avec le panneau de plancher (30) en place.
  10. Véhicule ferroviaire ayant la structure de plancher (14) selon l'une quelconque des revendications 1 à 9.
  11. Procédé de fabrication d'une structure de plancher (14) pour un wagon ferroviaire ayant des parois latérales gauche et droite (16), le procédé comprenant
    le placement (100) des poutres longitudinales gauche et droite (20) parallèles l'une à l'autre ;
    le positionnement (102) d'une pluralité d'éléments structurels transversaux (22) entre les poutres longitudinales gauche et droite (20) et parallèles entre eux à une distance longitudinale prédéterminée les uns des autres ;
    l'assemblage (104) directement et séparément de chacun de la pluralité d'éléments structurels transversaux (22) aux poutres longitudinales gauche et droite (20) de manière à créer une structure de support (19) ayant un plan de montage sensiblement plat (26),
    caractérisé en ce que le procédé comprend en outre :
    la fixation (106) d'au moins une première moitié d'interverrouillage (32) de chacune d'une pluralité de fixations non permanentes, refermables, à interverrouillage de pression (28) à chaque élément structurel transversal (22) à une distance transversale prédéterminée de la poutre longitudinale gauche (20) ;
    la fixation (108) à une face inférieure d'un panneau de plancher (30) d'une pluralité de secondes moitiés d'interverrouillage (34) de chacune de la pluralité de fixations non permanentes, refermables, à interverrouillage par pression (28) à la distance longitudinale prédéterminée les unes des autres ; et
    la fixation (110) du panneau de plancher (30) à la pluralité d'éléments structurels transversaux (22) en emboîtant de manière amovible chacune des premières moitiés d'interverrouillage (32) de la pluralité de fixations (28) à une partie correspondante des secondes moitiés d'interverrouillage (34) de la pluralité de fixations (28).
  12. Procédé selon la revendication 11, dans lequel la jonction (104) comprend en outre l'utilisation d'un procédé de jonction à faible chaleur choisi dans la liste constituée du soudage au laser et du soudage par friction-malaxage.
  13. Procédé selon la revendication 12, dans lequel l'assemblage (104) comprend en outre la production du plan de montage (26) avec une tolérance de planéité de moins de 3 mm par mètre.
  14. Procédé selon l'une quelconque des revendications 11 à 13, dans lequel la fixation (110) comprend en outre l'emboîtement conjoint de deux moitiés d'interverrouillage de tête de champignon compatibles (32, 34).
  15. Procédé selon l'une quelconque des revendications 11 à 14, dans lequel la fixation (110) comprend en outre le positionnement du panneau de plancher (30) à une distance sous-plancher entre le panneau de plancher (30) et chacun de la pluralité d'éléments structurels transversaux (22) sensiblement à celui d'une épaisseur d'une fixation imbriquée (28) et inférieure à une épaisseur du panneau de plancher (30).
EP21161031.6A 2021-03-05 2021-03-05 Structure de plancher d'un véhicule ferroviaire et procédé de fabrication d'une telle structure de plancher Active EP4052987B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21161031.6A EP4052987B1 (fr) 2021-03-05 2021-03-05 Structure de plancher d'un véhicule ferroviaire et procédé de fabrication d'une telle structure de plancher
ES21161031T ES2953282T3 (es) 2021-03-05 2021-03-05 Estructura de suelo de un vehículo ferroviario y método para fabricar dicha estructura de suelo

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Application Number Priority Date Filing Date Title
EP21161031.6A EP4052987B1 (fr) 2021-03-05 2021-03-05 Structure de plancher d'un véhicule ferroviaire et procédé de fabrication d'une telle structure de plancher

Publications (3)

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EP4052987A1 EP4052987A1 (fr) 2022-09-07
EP4052987A8 EP4052987A8 (fr) 2022-10-12
EP4052987B1 true EP4052987B1 (fr) 2023-05-10

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022210275A1 (de) 2022-09-28 2024-03-28 Siemens Mobility GmbH Verfahren zum Herstellen eines Bodengestells für einen Wagenkasten eines Schienenfahrzeugs und Bodengestell

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD288130A5 (de) * 1989-09-29 1991-03-21 Veb Fahrzeugruestung Berlin,De Elastische fussbodenbefestigung, insbesondere fuer hochgeschwindigkeits- und komfort-reisezugwagen
CH682993A5 (de) * 1990-07-06 1993-12-31 Alusuisse Lonza Services Ag Wagenkastenaufbau für Schienenfahrzeuge.
DE102010041196B4 (de) * 2010-09-22 2014-09-25 Siemens Aktiengesellschaft Schienenfahrzeug mit Fußboden-Auflagerelement
EP2570322B1 (fr) 2011-09-14 2014-12-17 Bombardier Transportation GmbH Elément de support pour le montage d'un sol de véhicule sur rails, sol d'un wagon de véhicule sur rail et véhicule sur rail
DE102018122813B4 (de) * 2018-09-18 2021-02-25 Airbus Operations Gmbh Fußbodensystem für ein Fahrzeug

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ES2953282T3 (es) 2023-11-10
EP4052987A1 (fr) 2022-09-07
EP4052987A8 (fr) 2022-10-12

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