EP3254923A1 - Railway vehicle body structure and method of assembly of such a body structure - Google Patents
Railway vehicle body structure and method of assembly of such a body structure Download PDFInfo
- Publication number
- EP3254923A1 EP3254923A1 EP17175288.4A EP17175288A EP3254923A1 EP 3254923 A1 EP3254923 A1 EP 3254923A1 EP 17175288 A EP17175288 A EP 17175288A EP 3254923 A1 EP3254923 A1 EP 3254923A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- panel
- body structure
- frame
- bolts
- axis
- 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
Links
- 238000000034 method Methods 0.000 title claims description 5
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 238000003466 welding Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
Images
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
- B61D17/043—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures connections between superstructure sub-units
- B61D17/046—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures connections between superstructure sub-units readily releasable, i.e. dismountable or collapsible sub-units, e.g. for shipping
-
- 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
- B61D17/08—Sides
Definitions
- the present invention relates to a railway vehicle body structure, the body structure comprising a frame, at least one panel, and a plurality of bolts securing the panel to the frame, each bolt of the plurality having a rod and holding a surface of the panel vis-à-vis a surface of the frame along an axis of the rod.
- the invention also relates to a method of assembling such a body structure.
- a rail vehicle such as a car, or a wagon
- panels for example side, on a frame, forming for example the frame of the future floor and on a pavilion forming the future roof of the vehicle.
- Such panels are usually fixed by welding, riveting or bolting.
- the bolts are generally of diameter M20. But, because of the length of the chassis (typically 23 meters in modern trains), and the number of bolts per meter to obtain a correct assembly, the total mass of the bolts is important, of the order of 350 kg. However, it is not conceivable to switch from M20 bolts to M16 bolts, because the number of bolts should then be increased, which would not significantly reduce the total mass. Moreover, by increasing the prestressing by choosing bolts of diameter M16 more resistant, one would increase the cost of the fasteners, and would complicate the implementation of tightening.
- Riveting is attractive, especially in single-sided areas (referred to as blind riveting), but structural rivet diameters do not exceed 12 mm and rivets have low shear strength.
- Blind crimping bolts with a diameter of 12 to 16 mm fitted are then used because the prestressing of these elements is too low to make them work in non-slip mode, as is the case with a non-blind bolt.
- the adjusted assembly presents difficulties of realization related to the respect of the necessary tolerances: precision of the machines, counter-drilling. This last operation has the disadvantage of producing chips incompatible with the assembly of pre-lined or already painted panels. This results in additional costs related to the protection of the panels to obtain a correct quality.
- Welding is interesting to lighten the structure and provides continuous bonds distributing the constraints and therefore very resistant. However, it does not allow the same flexibility as bolting or riveting. For example, the assembly of body structures in several materials is more difficult to achieve by welding. In addition, welding requires expensive special skills in personnel training.
- An object of the invention is to solve all or part of the problems mentioned above, that is to say in particular to provide a body structure in which the panel is properly fixed on the frame, with a weight saving total, the fixing remaining simple to achieve and a cost comparable or lower than the existing costs.
- the subject of the invention is a body structure according to claim 1.
- the body structure comprises one or more of the features corresponding to claims 2 to 10, taken (s) in all technically possible combinations.
- the invention also relates to an assembly method according to claim 11.
- a body structure 1 according to the invention is described intended to be part of a railway vehicle not shown.
- the body structure 1 comprises a lower body 2 and an upper roof 3, respectively comprising frames 5, 6.
- the body structure 1 also comprises two panels 10 forming two side walls 12A, 12B.
- the assembly of the panels 10 on the rocker 2 and the upper roof 3 forms a "tube" to be subsequently closed at both ends by transverse end walls (not shown).
- the body structure 1 comprises a plurality of bolts 15A, 15B for fixing the panel 10 to the frame 5, and a plurality of friction sheets 20A, 20B respectively compressed by the bolts 15A, 15B between the frame and the panel.
- the body structure 1 comprises for example other panels (not shown) similar to the panel 10, the panels being advantageously fixed on the frame 5 successively in a longitudinal direction L of the frame.
- the longitudinal direction L is for example the running direction of the future railway vehicle and is horizontal when the body structure 1 is oriented as it is intended to be in this vehicle.
- the frame 5 is for example an aluminum metal frame made from extruded profiles known in themselves.
- the chassis 6 is for example of structure similar to that of the chassis 5.
- this frame is made of mechanically welded steel.
- the frame 5 comprises a face 22 ( figure 3 ) defining for example two grooves 24A, 24B longitudinally oriented and superimposed in a direction V perpendicular to the longitudinal direction and to an axis D of the bolt 15A.
- the direction V is for example substantially vertical.
- the grooves 24A, 24B are adapted to respectively receive nuts 26A, 26B of the bolts 15A, 15B by locking them in rotation around the axis D ( figures 2 and 5 ).
- the grooves 24A, 24B being similar to each other, only the groove 24A will be described in detail below.
- the groove 24A is advantageously cruciform in section perpendicular to the longitudinal direction L (that is to say in the plane of the figures 2 and 5 ) in a way to marry the shape of bolt 15A.
- the groove 24A defines two longitudinal lips 28 arranged opposite one another in the direction V.
- the groove 24A is adapted to allow sliding of the nut 26A in longitudinal translation as long as the bolt 15A is not tight.
- the lips 28 partially close the groove 24A and prevent the nut 26A from coming out of the groove 24A along the axis D.
- the lips 28 define a surface 30 ( figure 5 ), preferably flat, and intended to be in contact with the friction sheet 20A.
- the surface 30 of the frame 5 is in two parts respectively corresponding to the lower and upper lips 28. Still in the example shown, the surface 30 corresponding to the lower lip 28 of the groove 24B is separated by a groove 32 of the surface 30 corresponding to the upper lip 28 defined by the groove 24A.
- the groove 32 is for example frustoconical section and facilitates positioning along the axis V of the panel 10 before tightening.
- the lips 28 have for example a thickness E1 ( figure 5 ) along the axis D.
- the thickness E1 is also the distance between the nut 26A of the friction sheet 20A when the bolt 15A is tightened.
- the thickness E1 is for example between 5 mm and 15 mm, and is advantageously about 10 mm.
- the panel 10 also advantageously has a honeycomb structure comprising a main wall 34 defining, at each bolt 15A, 15B, a surface 36 intended to be in contact with the friction sheets 20A, 20B respectively, a skin 38 located at the opposite the frame 5 relative to the main wall 34, and reinforcing elements 40 extending between the skin and the main wall.
- the panel 10 advantageously extends from the represented portion of the frame 5 to the frame 6.
- the skin 38 defines an opening 42, for example oblong, giving access to two bores 44A, 44B formed in the main wall 34 for the bolts 15A, 15B.
- the bolts 15A, 15B are for example of the M16 type.
- the bolts 15A, 15B further comprise respectively rods 46A, 46B oriented parallel to the axis D, and washers 48A, 48B on the opposite side to the nuts.
- the rods 46A, 46B are screws respectively having heads 50A, 50B.
- the rods 46A, 46B are studs.
- the heads 50A, 50B are then for example nuts.
- a single plate 52 is further interposed between the washers 48A, 48B and the main wall 34 of the panel 10.
- the bolts 15A, 15B being similar to each other, only the bolt 15A will be described in detail below.
- the nut 26A has an outer diameter DEE about the axis D. Still with respect to the axis D, the head 50A of the rod 46A has a support diameter DA and is separated from the friction sheet 20A by a distance E2 along the axis D.
- the support diameter DA is for example between 20 mm and 30 mm, and is advantageously about 25 mm.
- the distance E2 is the sum of the thicknesses of the main wall 34, the plate 52 and the washer 48A along the axis D.
- the distance E2 is for example between 10 mm and 20 mm, and is advantageously about 12 mm.
- the outer diameter DEE is for example between 40 mm and 50 mm, and is advantageously about 45 mm.
- the rod 46A has a DT rod diameter.
- the stem diameter DT is preferably about 16 mm.
- each friction sheet 20A, 20B is assigned to one of the bolts 15A, 15B, in that it is compressed by this bolt and not by another of the plurality.
- the same friction sheet is compressed by at least two bolts of the plurality.
- a plurality of separate friction sheets are arranged near a same bolt of the plurality, so as to be compressed by this bolt only.
- the friction sheet 20A has a generally washer-like shape centered on the axis D of the bolt 15A.
- the friction sheet 20A has a small thickness, preferably less than 0.5 mm, for example about 0.16 mm. It consists for example of a metal sheet, two layers of phosphorus nickel fixed on the faces of the metal sheet, and ceramic particles or diamonds located in and on said layers.
- Said layers and the particles create a roughness typically between 10 microns and 50 microns.
- the friction sheet 20A is advantageously bonded to the surface 36 of the panel 10 to facilitate the assembly of the body structure 1.
- the friction sheet 20A has an inner diameter DI advantageously less than or equal to the diameter of the rod DT plus 3 mm, preferably less than or equal to DT plus 1.5 mm. DI internal diameter complies with the ISO standards in force for bores for the passage of fastening screws.
- the friction sheet 20A has an outer diameter DE advantageously less than or equal to a value DMAX1 equal to the sum of the outer diameter of the nut DE and twice the thickness E1.
- the outer diameter DE is also advantageously less than or equal to a value DMAX2 equal to the sum of the support diameter DA and twice the thickness E2.
- the friction sheet 20A comprises two pins 54, advantageously diametrically opposite with respect to the axis D, for angularly orienting the friction sheet around the axis D relative to the panel 10.
- the pins 54 are further adapted to indicate to an operator two bonding areas 56 in which he can place one or more points of glue 58.
- the pins 54 have for example a notch shape made on a radially outer edge 57 of the friction sheet 20A.
- the zones 56 are defined as the points of an internal face 60 of the friction sheet 20A situated at a distance X from a line L1 parallel to the longitudinal direction L and passing through the axis D, the distance X being less than half the stem diameter DT.
- the friction sheet 20A comprises a first portion 62 located above the zones 56 on the figure 4 and a second portion 64 located below.
- the first portion 62 and second portion 64 are free of glue and are sandwiched between the lips 28 and the panel 10.
- the assembly comprises a step of fixing the panel 10 on the frame 5 by means of the bolts 15A, 15B.
- the friction sheets 20A, 20B are previously glued on the face 36 of the main wall 34 of the panel 10.
- the friction sheets 20A, 20B are advantageously glued in the bonding zones 56 identified by the marks 54.
- the friction sheets 20A, 20B are respectively disposed around the holes 44A, 44B, the pins 54 being aligned longitudinally, so that the bonded areas 58 are located between the lips 28 in the direction V.
- the rods 46A, 46B of the bolts are inserted into the holes 44A, 44B.
- the rods 46A and 46B are screwed into the nuts 26A, 26B previously inserted into the grooves 24A, 24B.
- the grooves 24A, 24B lock the nuts 26A, 26B in rotation around the rods 46A, 46B.
- the heads 50A, 50B are then screwed with a tool (not shown) via the window 42 until the desired tightening.
- This clamping is performed at a minimum prestressing level to obtain a sufficient pressure at the interface which anchors the friction sheets 20A, 20B on the parts in contact.
- the friction sheets 20A, 20B are then compressed between the surfaces 30 of the frame 5 and the surface 36 of the panel 10.
- Each friction sheet 20A, 20B locally contributes, respectively to the bolts 15A, 15B, to frictionally increase the resistance to sliding or shear in the plane defined by the directions L and V.
- the panel 10 is properly fixed on the frame 5, with a weight gain of about 20% of the total mass of the bolts. Fastening is simple to perform and lower cost because M16 bolts are cheaper than M20 bolts and the assembly does not require surface preparation.
- the dimensional criteria listed above make it possible to optimize the positioning of each of the friction sheets 20A, 20B with respect to the panel 10 or the frame 5.
- the criteria relating to the internal diameter DI make it possible to center the washer on the bolts.
- the criteria relating to the outer diameter DE make it possible to give the washer a maximum diameter both smaller than the values DMAX1 and DMAX2 beyond which the material of the friction sheets 20A, 20B does not contribute significantly to the increase of the resistance. to slip.
- the marks 54 make it possible to orient the friction sheets 20A, 20B at the moment when they are placed around the bores 44A, 44B.
- the fact that each sheet of friction is glued avoids their displacement or loss during assembly of the body structure 1.
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Abstract
Structure de caisse (1) de véhicule ferroviaire, comprenant un châssis (5, 6), au moins un panneau (10), et une pluralité de boulons (15A, 15B) fixant le panneau sur le châssis, chaque boulon comportant une tige (46A, 46B) et maintenant une surface (36) du panneau en vis-à-vis d'une surface (30) du châssis selon un axe (D) de la tige. La structure de caisse comprend en outre des feuilles de friction (20A, 20B). Pour chacun des boulons, au moins une des feuilles de friction est comprimée par le boulon entre la surface du panneau et la surface du châssis La surface du panneau présente une résistance au glissement par rapport à la surface du châssis selon une direction longitudinale (L) perpendiculaire à l'axe (D), ladite feuille de friction étant adaptée, à serrage constant du boulon, pour augmenter la résistance au glissement.Rail vehicle body structure (1), comprising a frame (5, 6), at least one panel (10), and a plurality of bolts (15A, 15B) securing the panel to the frame, each bolt having a rod ( 46A, 46B) and maintaining a surface (36) of the panel facing a surface (30) of the frame along an axis (D) of the rod. The body structure further comprises friction sheets (20A, 20B). For each of the bolts, at least one of the friction sheets is compressed by the bolt between the surface of the panel and the surface of the frame. The surface of the panel has a sliding resistance with respect to the surface of the frame in a longitudinal direction (L). perpendicular to the axis (D), said friction sheet being adapted, with constant tightening of the bolt, to increase the sliding resistance.
Description
La présente invention concerne une structure de caisse de véhicule ferroviaire, la structure de caisse comprenant un châssis, au moins un panneau, et une pluralité de boulons fixant le panneau sur le châssis, chaque boulon de la pluralité comportant une tige et maintenant une surface du panneau en vis-à-vis d'une surface du châssis selon un axe de la tige.The present invention relates to a railway vehicle body structure, the body structure comprising a frame, at least one panel, and a plurality of bolts securing the panel to the frame, each bolt of the plurality having a rod and holding a surface of the panel vis-à-vis a surface of the frame along an axis of the rod.
L'invention concerne également un procédé d'assemblage d'une telle structure de caisse.The invention also relates to a method of assembling such a body structure.
Pour réaliser une structure de caisse d'un véhicule ferroviaire, tel qu'une voiture, ou un wagon, il est connu d'assembler des panneaux, par exemple latéraux, sur un châssis, formant par exemple l'ossature du futur plancher et sur un pavillon formant le futur toit du véhicule. De tels panneaux sont en général fixés par soudage, rivetage ou boulonnage.To achieve a body structure of a rail vehicle, such as a car, or a wagon, it is known to assemble panels, for example side, on a frame, forming for example the frame of the future floor and on a pavilion forming the future roof of the vehicle. Such panels are usually fixed by welding, riveting or bolting.
Dans le cas du boulonnage, pour obtenir une fixation correcte du panneau, les boulons sont en général de diamètre M20. Mais, du fait de la longueur du châssis (typiquement 23 mètres dans les rames modernes), et du nombre de boulons par mètre pour obtenir un assemblage correcte, la masse totale des boulons est importante, de l'ordre de 350 kg. Il n'est toutefois pas envisageable de passer de boulons de type M20 à des boulons de type M16, car le nombre de boulons devrait alors être augmenté, ce qui ne réduirait pas significativement la masse totale. Par ailleurs, en augmentant la précontrainte en choisissant des boulons de diamètre M16 plus résistants, on augmenterait le coût des éléments de fixation, et on complexifierait la mise en oeuvre du serrage.In the case of bolting, to obtain a correct fixing of the panel, the bolts are generally of diameter M20. But, because of the length of the chassis (typically 23 meters in modern trains), and the number of bolts per meter to obtain a correct assembly, the total mass of the bolts is important, of the order of 350 kg. However, it is not conceivable to switch from M20 bolts to M16 bolts, because the number of bolts should then be increased, which would not significantly reduce the total mass. Moreover, by increasing the prestressing by choosing bolts of diameter M16 more resistant, one would increase the cost of the fasteners, and would complicate the implementation of tightening.
Le rivetage est intéressant, surtout dans des zones accessibles d'un seul côté (on parle de rivetage aveugle), mais les diamètres des rivets structurels ne dépassent pas les 12 mm et les rivets présentent une résistance au cisaillement faible. On utilise alors des boulons à sertir aveugles de diamètre 12 à 16 mm montés ajustés, car la précontrainte de ces éléments est trop faible pour les faire travailler en non glissement comme c'est le cas d'un boulon non aveugle. Le montage ajusté présente des difficultés de réalisation liées au respect des tolérances nécessaires : précision des machines, contre-perçage. Cette dernière opération présente le désavantage de produire des copeaux incompatibles avec l'assemblage de panneaux pré-garnis ou déjà peints. Il en résulte des surcoûts liés à la protection des panneaux pour obtenir une qualité correcte.Riveting is attractive, especially in single-sided areas (referred to as blind riveting), but structural rivet diameters do not exceed 12 mm and rivets have low shear strength. Blind crimping bolts with a diameter of 12 to 16 mm fitted are then used because the prestressing of these elements is too low to make them work in non-slip mode, as is the case with a non-blind bolt. The adjusted assembly presents difficulties of realization related to the respect of the necessary tolerances: precision of the machines, counter-drilling. This last operation has the disadvantage of producing chips incompatible with the assembly of pre-lined or already painted panels. This results in additional costs related to the protection of the panels to obtain a correct quality.
Afin d'améliorer la résistance au glissement des assemblages boulonnés ou rivetés, il est également connu de réaliser des traitements de surfaces (peinture, sablage) qui s'avèrent coûteux à mettre en oeuvre.In order to improve the sliding resistance of bolted or riveted joints, it is also known to produce surface treatments (painting, sanding) which prove to be expensive to implement.
Le soudage est intéressant pour alléger la structure et permet d'obtenir des liaisons continues répartissant les contraintes et donc très résistantes. Toutefois, il ne permet pas la même flexibilité que le boulonnage ou le rivetage. Par exemple, l'assemblage de structures de caisse en plusieurs matériaux est plus difficile à réaliser par soudage. De plus, le soudage nécessite des qualifications spéciales coûteuses en formation du personnel.Welding is interesting to lighten the structure and provides continuous bonds distributing the constraints and therefore very resistant. However, it does not allow the same flexibility as bolting or riveting. For example, the assembly of body structures in several materials is more difficult to achieve by welding. In addition, welding requires expensive special skills in personnel training.
Un but de l'invention est de résoudre tout ou partie des problèmes mentionnés ci-dessus, c'est-à-dire en particulier de fournir une structure de caisse dans laquelle le panneau est correctement fixé sur le châssis, avec un gain de masse total, la fixation restant simple à réaliser et d'un coût comparable ou inférieur aux coûts existants.An object of the invention is to solve all or part of the problems mentioned above, that is to say in particular to provide a body structure in which the panel is properly fixed on the frame, with a weight saving total, the fixing remaining simple to achieve and a cost comparable or lower than the existing costs.
A cet effet, l'invention a pour objet une structure de caisse selon la revendication 1.For this purpose, the subject of the invention is a body structure according to claim 1.
Selon des modes particuliers de réalisation, la structure de caisse comprend l'une ou plusieurs des caractéristiques correspondant aux revendications 2 à 10, prise(s) selon toutes les combinaisons techniquement possibles.According to particular embodiments, the body structure comprises one or more of the features corresponding to claims 2 to 10, taken (s) in all technically possible combinations.
L'invention a également pour objet un procédé d'assemblage selon la revendication 11.The invention also relates to an assembly method according to claim 11.
L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple, et faite en se référant aux dessins annexés, sur lesquels :
- la
figure 1 est une vue générale schématique d'une structure de caisse selon l'invention, - la
figure 2 est une vue en section selon un plan vertical d'un détail de la structure de caisse représentée sur lafigure 1 , - la
figure 3 est une vue éclatée du châssis et du panneau représentés sur lesfigures 1 et2 , - la
figure 4 est une vue de face d'une des feuilles de friction représentées sur lesfigures 2 et3 , et - la
figure 5 est un détail de lafigure 2 montrant des dimensions d'un des boulons et d'une des feuilles de friction représentés sur lafigure 2 .
- the
figure 1 is a schematic overview of a body structure according to the invention, - the
figure 2 is a sectional view in a vertical plane of a detail of the body structure represented on thefigure 1 , - the
figure 3 is an exploded view of the chassis and panel shown on thefigures 1 and2 , - the
figure 4 is a front view of one of the friction sheets shown on thefigures 2 and3 , and - the
figure 5 is a detail of thefigure 2 showing dimensions of one of the bolts and one of the friction sheets shown on thefigure 2 .
En référence à la
La structure de caisse 1 comprend un bas de caisse 2 et un pavillon supérieur 3, comportant respectivement des châssis 5, 6. La structure de caisse 1 comprend aussi deux panneaux 10 formant deux parois latérales 12A, 12B. L'assemblage des panneaux 10 sur le bas de caisse 2 et le pavillon supérieur 3 forme un « tube » destiné à être ultérieurement fermé à ses deux extrémités par des parois transversales d'extrémité (non représentées).The body structure 1 comprises a lower body 2 and an upper roof 3, respectively comprising
En référence aux
La structure de caisse 1 comprend une pluralité de boulons 15A, 15B pour fixer le panneau 10 sur le châssis 5, et une pluralité de feuilles de friction 20A, 20B respectivement comprimées par les boulons 15A, 15B entre le châssis et le panneau. La structure de caisse 1 comprend par exemple d'autres panneaux (non représentés) analogues au panneau 10, les panneaux étant avantageusement fixés sur le châssis 5 successivement selon une direction longitudinale L du châssis.The body structure 1 comprises a plurality of
La direction longitudinale L est par exemple la direction de marche du futur véhicule ferroviaire et est horizontale lorsque la structure de caisse 1 est orientée comme elle est destinée à l'être dans ce véhicule.The longitudinal direction L is for example the running direction of the future railway vehicle and is horizontal when the body structure 1 is oriented as it is intended to be in this vehicle.
Le châssis 5 est par exemple un châssis métallique en aluminium réalisé à partir de profilés extrudés connue en eux-mêmes. Le châssis 6 est par exemple de structure analogue à celle du châssis 5.The
Selon une variante non représentée, ce châssis est en acier mécanosoudé.According to a variant not shown, this frame is made of mechanically welded steel.
Sur les
Du côté du panneau 10, le châssis 5 comporte une face 22 (
La direction V est par exemple sensiblement verticale.The direction V is for example substantially vertical.
Les rainures 24A, 24B sont adaptées pour recevoir respectivement des écrous 26A, 26B des boulons 15A, 15B en les bloquant en rotation autour de l'axe D (
Les rainures 24A, 24B étant analogues l'une à l'autre, seule la rainure 24A sera décrite en détail ci-après.The
La rainure 24A est avantageusement cruciforme en section perpendiculairement à la direction longitudinale L (c'est-à-dire dans le plan des
Les lèvres 28 ferment partiellement la rainure 24A et empêchent l'écrou 26A de sortir de la rainure 24A selon l'axe D. Les lèvres 28 définissent une surface 30 (
Dans l'exemple représenté, du fait de la présence de la rainure 24A, la surface 30 du châssis 5 est en deux parties correspondant respectivement aux lèvres 28 inférieure et supérieure. Toujours dans l'exemple représenté, la surface 30 correspondant à la lèvre 28 inférieure de la rainure 24B est séparée par une rainure 32 de la surface 30 correspondant à la lèvre 28 supérieure définie par la rainure 24A.In the example shown, because of the presence of the
La rainure 32 est par exemple à section tronconique et facilite le positionnement suivant l'axe V du panneau 10 avant le serrage.The
Les lèvres 28 ont par exemple une épaisseur E1 (
L'épaisseur E1 est par exemple comprise entre 5 mm et 15 mm, et vaut avantageusement environ 10 mm.The thickness E1 is for example between 5 mm and 15 mm, and is advantageously about 10 mm.
Le panneau 10 présente aussi avantageusement une structure alvéolée comportant une paroi principale 34 définissant, au niveau de chaque boulon 15A, 15B, une surface 36 destinée à être en contact avec les feuilles de friction 20A, 20B respectivement, une peau 38 située à l'opposé du châssis 5 par rapport à la paroi principale 34, et des éléments de renfort 40 s'étendant entre la peau et la paroi principale.The
Le panneau 10 s'étend avantageusement depuis la portion représentée du châssis 5 jusqu'au châssis 6.The
Dans l'exemple, la peau 38 définit une ouverture 42, par exemple oblongue, donnant accès à deux perçages 44A, 44B ménagés dans la paroi principale 34 pour les boulons 15A, 15B.In the example, the
Les boulons 15A, 15B sont par exemple de type M16. Outre les écrous 26A, 26B, les boulons 15A, 15B comprennent en outre respectivement des tiges 46A, 46B orientées parallèlement à l'axe D, et des rondelles 48A, 48B du côté opposé aux écrous.The
Dans l'exemple représenté, les tiges 46A, 46B sont des vis ayant respectivement des têtes 50A, 50B.In the example shown, the
Selon une variante non représentée, les tiges 46A, 46B sont des goujons. Les têtes 50A, 50B sont alors par exemple des écrous.According to a variant not shown, the
Une plaque unique 52 est en outre intercalée entre les rondelles 48A, 48B et la paroi principale 34 du panneau 10.A
Les boulons 15A, 15B étant analogues l'un à l'autre, seul le boulon 15A sera décrit en détail ci-après.The
L'écrou 26A présente un diamètre extérieur DEE autour de l'axe D. Toujours par rapport à l'axe D, la tête 50A de la tige 46A présente un diamètre d'appui DA et est séparée de la feuille de friction 20A par une distance E2 selon l'axe D.The
Le diamètre d'appui DA est par exemple compris entre 20 mm et 30 mm, et vaut avantageusement environ 25 mm.The support diameter DA is for example between 20 mm and 30 mm, and is advantageously about 25 mm.
La distance E2 est la somme des épaisseurs de la paroi principale 34, de la plaque 52 et de la rondelle 48A selon l'axe D.The distance E2 is the sum of the thicknesses of the
La distance E2 est par exemple comprise entre 10 mm et 20 mm, et vaut avantageusement environ 12 mm.The distance E2 is for example between 10 mm and 20 mm, and is advantageously about 12 mm.
Le diamètre extérieur DEE est par exemple compris entre 40 mm et 50 mm, et vaut avantageusement environ 45 mm.The outer diameter DEE is for example between 40 mm and 50 mm, and is advantageously about 45 mm.
La tige 46A possède un diamètre de tige DT.The
Le diamètre de tige DT est avantageusement d'environ 16 mm.The stem diameter DT is preferably about 16 mm.
Dans l'exemple représenté, chaque feuille de friction 20A, 20B est affectée à l'un des boulons 15A, 15B, en ce sens qu'elle est comprimée par ce boulon et pas par un autre de la pluralité.In the example shown, each
Selon des variantes non représentées, une même feuille de friction est comprimée par au moins deux boulons de la pluralité.According to variants not shown, the same friction sheet is compressed by at least two bolts of the plurality.
Selon une autre variante non représentée, plusieurs feuilles de friction distinctes sont disposées à proximité d'un même boulon de la pluralité, de manière à être comprimée par ce boulon uniquement.According to another variant not shown, a plurality of separate friction sheets are arranged near a same bolt of the plurality, so as to be compressed by this bolt only.
Les feuilles de friction 20A, 20B étant analogues l'une à l'autre, seule la feuille de friction 20A sera décrite en détail ci-après.Since the
Comme visible sur la
La feuille de friction 20A présente une épaisseur faible, avantageusement inférieure à 0,5 mm, valant par exemple environ 0,16 mm. Elle se compose par exemple d'une feuille de métal, de deux couches de nickel phosphore fixées sur les faces de la feuille de métal, et de particules de céramiques ou diamants situées dans et sur les dites couches.The
Lesdites couches et les particules créent une rugosité typiquement comprise entre 10 µm et 50 µm.Said layers and the particles create a roughness typically between 10 microns and 50 microns.
La feuille de friction 20A est avantageusement collée sur la surface 36 du panneau 10 pour faciliter l'assemblage de la structure de caisse 1.The
La feuille de friction 20A présente un diamètre interne DI avantageusement inférieur ou égal au diamètre de tige DT plus 3 mm, de préférence inférieur ou égal à DT plus 1,5 mm. Le diamètre interne DI est conforme aux normes ISO en vigueur pour les alésages pour le passage des vis de fixation.The
La feuille de friction 20A présente un diamètre externe DE avantageusement inférieur ou égal à une valeur DMAX1 égale à la somme du diamètre externe d'écrou DE et du double de l'épaisseur E1.The
Le diamètre externe DE est également avantageusement inférieur ou égal à une valeur DMAX2 égale à la somme du diamètre d'appui DA et du double de l'épaisseur E2.The outer diameter DE is also advantageously less than or equal to a value DMAX2 equal to the sum of the support diameter DA and twice the thickness E2.
Comme visible sur la
Les repères 54 ont par exemple une forme d'encoche faite sur un bord radialement externe 57 de la feuille de friction 20A.The
Les zones 56 sont définies comme les points d'une face interne 60 de la feuille de friction 20A situés à une distance X d'une droite L1 parallèle à la direction longitudinale L et passant par l'axe D, la distance X étant inférieure à la moitié du diamètre de tige DT. Ainsi, en disposant la colle dans les zones de collage 56, puis en orientant les repères 54 selon la direction longitudinale L lorsque la feuille de friction 20A est collée sur la face 36 du panneau 10, l'opérateur est assuré que les zones encollées ne seront pas prises en sandwich entre le châssis 5 et le panneau 10, ce qui évite des phénomènes de fluage ultérieurs gênants pour la maîtrise de la précontrainte dans l'assemblage.The
La feuille de friction 20A comprend une première partie 62 située au-dessus des zones 56 sur la
La première partie 62 et deuxième partie 64 sont exemptes de colle et sont prises en sandwich entre les lèvres 28 et le panneau 10.The
L'assemblage de la structure de caisse 1 va maintenant être décrit.The assembly of the body structure 1 will now be described.
L'assemblage comporte une étape de fixation du panneau 10 sur le châssis 5 à l'aide des boulons 15A, 15B.The assembly comprises a step of fixing the
Les feuilles de friction 20A, 20B sont préalablement collées sur la face 36 de la paroi principale 34 du panneau 10. Les feuilles de friction 20A, 20B sont avantageusement encollées dans les zones de collage 56 repérées grâce aux repères 54.The
Puis, les feuilles de friction 20A, 20B sont disposées respectivement autour des perçages 44A, 44B, les repères 54 étant alignés longitudinalement, de sorte que les zones collées 58 se situent entre les lèvres 28 selon la direction V.Then, the
Ensuite, les tiges 46A, 46B des boulons sont insérées dans les perçages 44A, 44B. Les tiges 46A et 46B sont vissées dans les écrous 26A, 26B préalablement insérés dans les rainures 24A, 24B.Then, the
Les rainures 24A, 24B bloquent les écrous 26A, 26B en rotation autour des tiges 46A, 46B.The
Les têtes 50A, 50B sont ensuite vissées à l'aide d'un outil (non représenté) via la fenêtre 42 jusqu'à obtention du serrage voulu. Ce serrage est réalisé à un niveau de précontrainte minimale permettant d'obtenir une pression suffisante à l'interface qui ancre les feuilles de friction 20A, 20B sur les pièces en contact.The
Les feuilles de friction 20A, 20B sont alors comprimées entre les surfaces 30 du châssis 5 et la surface 36 du panneau 10.The
Chaque feuille de friction 20A, 20B contribue localement, respectivement au niveau des boulons 15A, 15B, à augmenter par frottement la résistance au glissement ou au cisaillement dans le plan défini par les directions L et V.Each
Il est ainsi possible de réduire le diamètre, la classe de qualité ou le nombre des boulons 15A, 15B utilisés.It is thus possible to reduce the diameter, the quality class or the number of
En passant par exemple de boulons M20 à M16, cela permet d'alléger la structure de caisse 1 d'environ 70 kg. En outre, les boulons M16 sont moins coûteux que les boulons M20, si bien que le coût de la structure de caisse est également réduit.By passing for example bolts M20 to M16, it alleviates the body structure 1 of about 70 kg. In addition, the M16 bolts are less expensive than the M20 bolts, so the cost of the body structure is also reduced.
Grâce aux caractéristiques décrites ci-dessus, le panneau 10 est correctement fixé sur le châssis 5, avec un gain de masse d'environ 20% de la masse totale des boulons. La fixation est simple à réaliser et d'un coût inférieur, car les boulons M16 sont moins chers que les boulons M20 et l'assemblage ne requiert pas de préparation de surface.With the features described above, the
En outre, les critères dimensionnels énumérés ci-dessus permettent d'optimiser le positionnement de chacune des feuilles de friction 20A, 20B par rapport au panneau 10 ou au châssis 5. Les critères portant sur le diamètre interne DI permettent de centrer la rondelle sur les boulons. Les critères portant sur le diamètre extérieur DE permettent de donner à la rondelle un diamètre maximal à la fois inférieur aux valeurs DMAX1 et DMAX2 au-delà desquelles le matériau des feuilles de friction 20A, 20B ne contribue plus significativement à l'augmentation de la résistance au glissement.In addition, the dimensional criteria listed above make it possible to optimize the positioning of each of the
Enfin, les repères 54 permettent d'orienter les feuilles de friction 20A, 20B au moment où elles sont placées autour des perçages 44A, 44B. Le fait que chaque feuille de friction soit collée permet d'éviter leur déplacement ou leur perte pendant l'assemblage de la structure de caisse 1.Finally, the
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL17175288T PL3254923T3 (en) | 2016-06-09 | 2017-06-09 | Railway vehicle body structure and method of assembly of such a body structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1655298A FR3052422B1 (en) | 2016-06-09 | 2016-06-09 | BODY STRUCTURE OF A RAIL VEHICLE AND METHOD FOR ASSEMBLING SUCH A STRUCTURE OF THE BODY |
Publications (2)
Publication Number | Publication Date |
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EP3254923A1 true EP3254923A1 (en) | 2017-12-13 |
EP3254923B1 EP3254923B1 (en) | 2019-01-23 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP17175288.4A Active EP3254923B1 (en) | 2016-06-09 | 2017-06-09 | Railway vehicle body structure and method of assembly of such a body structure |
Country Status (6)
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EP (1) | EP3254923B1 (en) |
AU (1) | AU2017203802B2 (en) |
DK (1) | DK3254923T3 (en) |
ES (1) | ES2721792T3 (en) |
FR (1) | FR3052422B1 (en) |
PL (1) | PL3254923T3 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3812233A1 (en) | 2019-10-21 | 2021-04-28 | Bombardier Transportation GmbH | Method for manufacturing a railcar body |
US11352063B2 (en) * | 2018-08-30 | 2022-06-07 | Clark Equipment Company | Frame access aperture |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29620621U1 (en) * | 1996-11-27 | 1998-04-02 | Duewag Ag, 47829 Krefeld | Car body of a rail vehicle |
DE10341350A1 (en) * | 2003-09-08 | 2005-03-31 | Siemens Ag | Quick connecting system for joining ribs and metal cladding of wagon to basic frame, comprising specifically shaped positioning elements |
WO2014129190A1 (en) * | 2013-02-25 | 2014-08-28 | 川崎重工業株式会社 | Railroad vehicle structure |
-
2016
- 2016-06-09 FR FR1655298A patent/FR3052422B1/en not_active Expired - Fee Related
-
2017
- 2017-06-06 AU AU2017203802A patent/AU2017203802B2/en active Active
- 2017-06-09 EP EP17175288.4A patent/EP3254923B1/en active Active
- 2017-06-09 ES ES17175288T patent/ES2721792T3/en active Active
- 2017-06-09 PL PL17175288T patent/PL3254923T3/en unknown
- 2017-06-09 DK DK17175288.4T patent/DK3254923T3/en active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29620621U1 (en) * | 1996-11-27 | 1998-04-02 | Duewag Ag, 47829 Krefeld | Car body of a rail vehicle |
DE10341350A1 (en) * | 2003-09-08 | 2005-03-31 | Siemens Ag | Quick connecting system for joining ribs and metal cladding of wagon to basic frame, comprising specifically shaped positioning elements |
WO2014129190A1 (en) * | 2013-02-25 | 2014-08-28 | 川崎重工業株式会社 | Railroad vehicle structure |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11352063B2 (en) * | 2018-08-30 | 2022-06-07 | Clark Equipment Company | Frame access aperture |
EP3812233A1 (en) | 2019-10-21 | 2021-04-28 | Bombardier Transportation GmbH | Method for manufacturing a railcar body |
US10994377B1 (en) | 2019-10-21 | 2021-05-04 | Bombardier Transportation Gmbh | Method for manufacturing a railcar body |
Also Published As
Publication number | Publication date |
---|---|
AU2017203802A1 (en) | 2018-01-04 |
EP3254923B1 (en) | 2019-01-23 |
ES2721792T3 (en) | 2019-08-05 |
PL3254923T3 (en) | 2019-07-31 |
DK3254923T3 (en) | 2019-04-29 |
FR3052422B1 (en) | 2019-08-30 |
AU2017203802B2 (en) | 2022-11-03 |
FR3052422A1 (en) | 2017-12-15 |
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