EP3227157B1 - Cadre de châssis d'un véhicule ferroviaire avec une traverse - Google Patents

Cadre de châssis d'un véhicule ferroviaire avec une traverse Download PDF

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Publication number
EP3227157B1
EP3227157B1 EP16706179.5A EP16706179A EP3227157B1 EP 3227157 B1 EP3227157 B1 EP 3227157B1 EP 16706179 A EP16706179 A EP 16706179A EP 3227157 B1 EP3227157 B1 EP 3227157B1
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EP
European Patent Office
Prior art keywords
section
chassis frame
connection
frame according
sections
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EP16706179.5A
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German (de)
English (en)
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EP3227157A1 (fr
Inventor
Radovan Seifried
Christian KARNER
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Siemens Mobility Austria GmbH
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Siemens Mobility Austria GmbH
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Publication of EP3227157A1 publication Critical patent/EP3227157A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/50—Other details
    • B61F5/52—Bogie frames

Definitions

  • the invention relates to a chassis frame of a rail vehicle with a cross member for connecting two longitudinal members of the undercarriage frame, the cross member being box-shaped with an upper chord, a lower chord and two side walls and, seen in a longitudinal direction, each end having a connecting section for connection to one of the longitudinal members.
  • Trolleys also called bogies, of rail vehicles generally have two wheel sets which are guided on rails and are connected to car bodies of the rail vehicle.
  • An essential component of a chassis is a chassis frame, to which the wheel sets are connected, for example via a wheel set guide or primary suspension, and the car body, for example, via a secondary suspension and a device for power transmission.
  • the power flows between the individual components mainly run via the chassis frame.
  • the undercarriage frame usually comprises two side members and one or more cross members, the variant with a cross member being referred to as an H-type.
  • the longitudinal beams can also be designed as a frame closed by means of head beams.
  • the cross member is designed as a box-shaped profile and comprises an upper chord, a lower chord and two side walls, each of which is composed of individual ones Sheets or plate-shaped metal parts exist. Seen in a longitudinal direction of the cross member, which corresponds to the transverse direction of the undercarriage frame, the cross member in each case has a connection section at its end, by means of which the cross member is connected to one of the longitudinal members via welds, for example fillet welds.
  • top flange, bottom flange, side walls are connected to each other at the edges by means of a continuous fillet weld, the fillet weld being welded on one side only due to the lack of accessibility.
  • the weld seams lead to stress concentrations in the area of the edges, which on the one hand increases the torsional stiffness of the chassis frame and on the other hand causes a large cross-section of the fillet welds and thus increases the overall weight of the cross member.
  • the chassis frame has a high torsional stiffness due to the design of the cross member described above. This worsens the running properties of the bogie on the one hand, in particular the derailment protection decreases, on the other hand the tensions in the weld seams in the connecting section between the longitudinal members and cross members increase. Since welds, in particular fillet welds, have only a low load capacity in relation to the cross section of the weld seams or the length of the weld seams, according to the prior art to compensate for the disadvantages mentioned above, only an increase in the weld seam cross-section or the weld seam lengths in the connection section is known, which is too elaborate constructions and in any case leads to increased weight.
  • the technical environment is based on the documents FR 931 591 A and JP S57 88939 A referred.
  • the invention relates to a chassis frame of a rail vehicle with a cross member for connecting two longitudinal members of the undercarriage frame, the cross member being box-shaped with an upper chord, a lower chord and two side walls and, seen in a longitudinal direction, each end having a connecting section for connection to one of the longitudinal members.
  • the cross member is a bent part, a bending region being formed between the side walls and the top flange and between the side walls and the bottom flange.
  • Bent parts are produced in a bending process, also known as a bending process, by plastically deforming the raw body by introducing a bending moment into a flat raw body, the so-called unwinding or sheet metal development, and thus into a two- or three-dimensional one Is brought into shape.
  • Suitable manufacturing processes are, for example, die bending or swivel bending. Those areas that are plastically deformed are called bending areas and are characterized by a homogeneous and favorable stress curve.
  • the top flange and bottom flange or the side walls each relate to the non-plastically deformed, preferably flat, regions of the cross member.
  • the bending areas relate to the respective plastically deformed, preferably curved, areas of the cross member.
  • each longitudinal member has in its central section a longitudinal member connecting section which is connected to one of the connecting sections of the cross member.
  • the inventive design of the cross member results on the one hand in a reduced torsional rigidity of the entire undercarriage frame and on the other hand in a significantly reduced overall weight of the undercarriage frame.
  • Each side rail connection section has four straight, non-interconnected side rail connection edges, which are preferably arranged on the circumference of a rectangle, and are connected to the connection edges of the cross member via connection welds. Due to the rectilinear connection edges of the cross member, which are accessible through the upper and / or lower opening in the lateral surface of the cross member, counter-welded connection weld seams can be produced, which are designed as butt seams over the entire weld cross section.
  • the bending area is designed as a bending radius, the center of the bending radius in the interior of the cross member lies. This results in a particularly easy-to-produce shape of the cross member, which, in other words, in cross-section, normally seen in the longitudinal direction, corresponds to a rectangle with rounded corners, the curves being designed as circular radii. It goes without saying that instead of a bending radius also one Bending curvature with a different curvature profile can be provided, so that the bending area is shown in cross section, for example with an elliptical or general curve profile. It is advantageous if the bending area has a convex shape.
  • an embodiment variant of a cross member according to the invention provides that the bent part or parts of the bent part each have two connecting sections for closing the bent part on the parallel to the longitudinal direction first edges.
  • the first edges are those edges that are formed at the open ends of the bent part. In other words, these are those edges which run laterally in the development of the bent part and thus parallel to the length direction or do not form the frontal connection sections.
  • the first edges face each other and are only a short distance apart, so that the connecting sections are formed. If the bent part is composed of several sections, with one section always extending over the entire length of the cross member in the longitudinal direction, each section has first edges at the open ends, which in the assembled state face the first edges of adjacent sections and so do the Form connecting sections.
  • the bent part is designed in one piece in accordance with a first embodiment of the invention.
  • the box-shaped profile is thus formed by a single bent part, which only has to be connected by a single connecting weld seam, and thus achieves a particularly weight-saving construction of the cross member with a favorable stress curve.
  • the bent part has a first connection section and a second connection section and that the first connection section is connected to the second connection section by a connection weld seam, preferably butt joint.
  • the connecting sections lie opposite one another and thus butt against one another, the two connecting sections are connected by a connecting weld seam like a butt seam in which the entire cross section of the connecting weld seam has a load-bearing effect.
  • the two connecting sections are accordingly “welded through” so that the connecting weld seam extends continuously from one side of the sheet to the other, that is to say the entire area between the top and bottom of the sheet is filled with welding material.
  • the first and / or the second connecting section can also be designed in a divided manner, that is, it does not extend continuously over the full length in the longitudinal direction of the cross member.
  • a preferred embodiment of the first embodiment variant provides that the connecting sections are designed as part of the lower flange and are preferably aligned symmetrically with respect to a width direction that is normal to the length direction.
  • the connecting sections or the first edges are formed by the lower flange.
  • the connecting sections are arranged symmetrically, that is to say divide the lower flange in the middle in the width direction, a connecting weld seam can be easily manufactured in terms of production technology. It is of course just as conceivable that the connecting sections are formed analogously by the upper flange.
  • a second embodiment variant of the invention provides that the bent part is constructed in several pieces and comprises at least a first part and a second part, at least one parting plane forming the parts being aligned parallel to the length direction.
  • the multi-piece design of the bent part enables a much simpler production, since the box-shaped cross section can be assembled from several sections, each with open profiles, for example from two U-profiles or four edge profiles.
  • a preferred embodiment of the second embodiment variant provides that the bent part comprises exactly two sections, each section comprising a side wall and a part, preferably half, of the upper flange and the lower chord.
  • the division into two sections, each comprising a side wall and a part of the upper and lower chord enables the use of easy-to-produce U-profiles for the sections.
  • the symmetrical division of the upper chord and the lower chord between the two sections enables simple assembly and a favorable tension curve.
  • each section has a first connecting section and a second connecting section, and the respective first connecting section of one of the sections is connected to the second connecting section of the adjoining section Connection weld, preferably butt weld, connected.
  • each section in the development has a first edge on both sides, each section also has two connecting sections which are connected to the connecting sections of the adjacent sections.
  • the first connecting section (“right" edge) of the first section with the second connecting section ("left" edge) of the second section and vice versa is the first connecting section ("right" edge) of the second section with the second connecting section ( "left” edge) of the first section connected.
  • the series can be continued analogously for any number of sections.
  • the connecting sections butt each butt through the formed bending areas, so that a connecting weld seam, such as a butt weld, is provided for connecting the connecting sections, in which the entire weld cross section has a load-bearing effect.
  • the two connecting sections are accordingly "welded through” again, as was explained at the beginning.
  • at least one pair of the connecting sections can be made in several parts along the length direction, ie does not extend continuously over the full length of the cross member in the length direction.
  • a particularly preferred embodiment of the first and second embodiment variants provides that the connecting weld seams run outside the bending areas.
  • the connecting weld seams or the connecting sections run outside the bending areas.
  • the cross member has openings on its outer surface, including upper flange, lower flange and the side walls, on at least two opposite sides of the outer surface.
  • the torsional stiffness of the cross member i.e. the resistance to twisting about a longitudinal axis of the cross member parallel to the longitudinal direction .
  • the twist stiffness only changes significantly when the openings take up at least 20% of the area of the upper chord or lower chord or the side walls. It goes without saying that the openings in the lateral surface are conceivable both for the first and for the second embodiment variant.
  • the upper chord has at least one upper opening and the lower chord has at least one lower opening, at least the upper opening or the lower opening taking up at least 50% of the area of the upper chord or the lower chord.
  • the top flange and bottom flange are particularly suitable for having large openings. It is advantageous if the upper or lower opening between 50% and 80%, preferably between 65% and 75%, and the other opening between 20% and 40%, preferably between 25% and 35%, of the surface of the upper flange or of the lower chord.
  • both the connection welds and the connection welds for connection to the side members can be counter-welded and post-treated, for example ground. This also solves the problem of corrosion so that the openings do not have to be closed.
  • the fact that one of the two openings is smaller ensures that the cross member can guide the operating forces from one longitudinal member to the other longitudinal member via the respective upper flange or lower flange.
  • the two side walls each have at least one side opening, the side opening of a side wall taking up at least 25% of the area of the respective side wall, the torsional stiffness is further reduced. While the upper and lower openings are usually designed as a single opening, it has proven to be advantageous if several side openings of approximately the same size are provided per side wall in order to guarantee an at least necessary torsional rigidity. At the same time, the total weight of the cross member is further reduced through the side openings.
  • a further preferred embodiment of a cross member according to the invention provides that the connection section provided for connection to one of the side members in the development of the bent part by a second edge of the bent part running normal to the longitudinal direction is formed, which runs in a straight line and is divided by interruptions.
  • the interruptions serve to prevent a continuous connecting edge and to segment the second edge into individual parts which do not touch one another. This prevents the formation of a stress concentration at those points where two connecting edges meet according to the prior art.
  • the bending areas, at which the second edge is curved as seen in the longitudinal direction, are not suitable for connection to the side member, for example by means of a connection weld. It is therefore particularly advantageous if one in at least one bending area Interruption is arranged. This prevents the contact between two abutting connection edges on the one hand and the unfavorable curved course of the connection edges in the bending area on the other hand.
  • interruptions are arranged in all four bending areas, four interruptions are provided according to a further preferred embodiment which divides the second edge into an upper connecting edge of the upper chord, into a lower connecting edge of the lower chord and two lateral connecting edges of the side walls.
  • the interruptions merges into a recess, the dimensions of the recess being larger than the dimensions of the interruptions.
  • the interruption itself can be made relatively small, since only the second edge has to be interrupted, the recess makes bending easier, so that no curls occur in the bending area.
  • the maximum extent of the recess in the width direction comprises at least the bending area and the maximum extent of the recess in the length direction between 25% and 75%, preferably between 33% and 66%, in particular between 40% and 60% , the maximum expansion in the width direction. If one considers the development of the bent part, the recesses are semicircular or semi-elliptical.
  • a further particularly preferred embodiment variant of the invention therefore provides that at least one end section of the adjacent connection edge adjoining the interruption is formed by a rod-shaped section of the element forming the respective connection edge. Since the connection edge is undercut by the recess and is separated from the next connection edge by the interruption, the connection edge or the element forming the connection edge, that is to say either the top flange, the bottom flange or one of the side walls, is not bent.
  • the distance preferably corresponds at least to the thickness of the sheet which forms the bent part.
  • Figure 1 shows a first embodiment of a cross member according to the invention with a box-shaped profile, wherein the cross section is normal to a longitudinal direction 5 of the cross member.
  • the length direction 5 corresponds to a transverse direction of the Undercarriage frame.
  • the cross member comprises an upper flange 1, which faces a car body of a rail vehicle in the installed state, a lower flange 2, which faces the rails in the installed state, and a first side wall 3 and a second side wall 4, seen in the longitudinal direction 5, the left and right Form the side of the cross member.
  • the cross member has a first connection section 7 at one end, that is to say, for example, at the front end, and a second connection section 8 at the opposite end, that is to say at the rear end.
  • connection sections 7, 8 serve to connect the cross member to a longitudinal member 38, 39.
  • the connection sections 7, 8 in the present example are the open ends of the box-shaped cross member.
  • the cross member is designed as a bent part 9, in the present case as a one-piece bent part 9.
  • the box-shaped profile of the crossmember is produced from a flat development by means of a corresponding manufacturing process, for example folding, swivel bending or die bending, in that the development is locally plastically deformed by means of an introduced bending moment, so that a three-dimensional shape is formed from the essentially two-dimensional development.
  • a manufacturing process results in the following positive effect: since the bent part 9 is a single part which forms both the upper flange 1, lower flange 2 and the side walls 3, 4, only a single weld seam is required to make the box profile to manufacture.
  • the first side wall 3 forms a bending area 10 in that area, which was plastically deformed in the manufacturing process.
  • the Bending area 10 represents a curved area, which in the present example is designed as a transition radius with a bending radius 11, as in FIG Figure 5 is clearly visible.
  • the bending radius 11 is a circular radius, and curves with different curvature, for example ellipses, are also conceivable in alternative design variants.
  • a bending area 10 is also formed between the top chord 1 and the second side wall 4.
  • a bending area 10 is formed in the same shape, so that the cross-section of the cross member normal to the length direction 5 has the shape of a rectangle, has rounded corners due to the bending radii 11 (see also Figure 5 ).
  • FIG. 2 a development, that is the flat raw body, for example sheet metal cutting, is shown before the bending process. It can clearly be seen that the development of the bent part 9 in a width direction 6, which is normal to the length direction 5, forms a first edge 14 on both sides (indicated by the dashed line), which runs parallel to the length direction 5. This forms on one side of the development of the bent part 9, in the illustration on the right side, a first connection section 16 and on the other side of the development of the bent part 9, the left side, a second connection section 17, via which the bent part 9, for example by a weld seam.
  • the connecting sections 16, 17 are the end faces of the element forming the first edge 14, that is to say those flat surfaces which, seen in the width direction 6, form the first edges 14.
  • the lower flange 2 is designed so that one half, measured in the width direction 6, of the lower flange 2 is connected to the corresponding side wall 3, 4 via the bending region 10 which has not yet been deformed and is therefore flat. Therefore, the lower flange 2 forms the connecting sections 16, 17. Equally, however, it is equally conceivable that the upper flange 1 or one of the side walls 3, 4 is divided, the division naturally also being asymmetrical when viewed in the width direction 6. It can also be seen that the lower flange 2 has a lower opening 21, which in the development of the bent part 9 is also divided between the two halves of the lower flange 2, so that the connecting sections 16, 17 are seen in the longitudinal direction 5 on each side of the extend lower opening 21.
  • the connecting sections 16, 17 are formed by T-shaped sections of the lower flange 2, the horizontal part of the Ts projecting in sections into the lower opening 21 in order to increase the length of the connecting sections 16, 17.
  • the horizontal part of the Ts protrudes beyond the second edge 15.
  • the connecting sections 16, 17 are located opposite one another and in the immediate vicinity of one another, that is to say they even contact one another in extreme cases.
  • the two connecting sections 16, 17 are connected to one another by a connecting weld seam 18, which is designed as a butt seam. A power transmission with the full cross section of the connecting weld seam 18 is thus possible.
  • the two connecting sections 16, 17 are accordingly “welded through” so that the connecting weld seam 18 extends continuously from one side of the sheet forming the bent part 9 to the other, that is to say the entire area between the top and bottom of the sheet is filled with welding material.
  • the upper flange 1 has an upper opening 20
  • the lower flange 2 has the lower opening 21 and each of the side walls 3, 4 has four side openings 22.
  • the openings 20, 21, 22 each occupy at least 20% of the area of the corresponding element, that is to say the upper chord 1, the lower chord 2 or the side walls 3, 4. It is also conceivable that only upper and lower openings 20, 21 or side openings 22 are provided only on two opposite sides of the lateral surface of the bent part 9, comprising the upper chord 1, lower chord 2 and the side walls 3, 4. In addition to reducing the torsional stiffness, the openings 20, 21, 22 also result in a significant weight reduction of the entire cross member.
  • the upper opening 20 has a substantially rectangular shape, with roundings and constrictions in the shape, and is aligned symmetrically to the upper flange 1 both in the length direction 5 and in the width direction 6.
  • the upper opening 20 takes up about 30% of the area of the upper chord 1.
  • the lower opening 21 is elliptical, is aligned both in the longitudinal direction 5 and in the width direction 6 symmetrically to the lower flange 2 and occupies approximately 75% of the area of the lower flange 2, so that the lower flange 2 has a lower shear stiffness than the upper flange 1.
  • the four side openings 22 are formed identically on both side walls 3, 4 and comprise a pair of circular and a pair of rectangular, rounded openings, which are related to the width direction 6 (cf. Fig. 2 ) are arranged symmetrically. Viewed in the longitudinal direction 5, the side openings 22 are distributed symmetrically from the center of the cross member, the rectangular openings being arranged closer to the center than the round ones. The total area of the four side openings 22 is approximately 35% of the area of a side wall 3.4.
  • connection sections 7, 8 Viewed in the longitudinal direction 5, the development of the bent part 9 has a second edge 15 at the end, that is to say on the front or rear side, which is normal to the longitudinal direction 5 or parallel extends to the width direction 6, a second edge 15 each forming one of the connection sections 7, 8. Since the second edge 15 would also plastically deform in the bending area 10 during the bending process, which would lead to a peripheral edge in the form of a rounded rectangle, the second edge 15 is divided into four areas by four interruptions 23, 24, 25, 26 which are directly assigned to the top flange 1, the bottom flange 2 and the side walls 3, 4.
  • the first interruption 23 and the second interruption 24 define a side connecting edge 29 of the first side wall 3, the second interruption 24 and the third interruption 25 an upper connecting edge 27 of the upper chord 1, the third interruption 25 and the fourth interruption 26 the lateral connecting edge 29 the second side wall 4 and the fourth interruption 26 and the first interruption 23 a lower connecting edge 28 of the lower flange 2.
  • the interruptions 23, 24, 25, 26 are each arranged in the bending area 10 between the respective elements. It is also conceivable that the interruptions 23, 24, 25, 26 are arranged outside the bending area 10, in an area that corresponds to up to 25% of the width of the bending area 10, in order to achieve the same effect.
  • the interruptions 23, 24, 25, 26 each merge into a recess 30 which lies in the interior of the respective element.
  • the first interruption 23 takes up only about 15% of a maximum extent of the bending region 10 in the width direction 6, up to 25% or even less than 15% being conceivable.
  • the recess 30, on the other hand, is substantially larger, so that its maximum extent in the width direction 6 corresponds at least to the maximum extent of the bending region 10 in the width direction 6.
  • the recess 30 is offset inwards parallel to the second edge 15, so that an inner edge of the recess 30 parallel to the second edge 15 is formed, and has a substantially semicircular shape, the corners of the semicircle being rounded.
  • FIG. 1 it can be seen how the recess 30 and the interruptions 23, 24, 25, 26 affect the shape of the connecting edges 27, 28, 29; in detail, due to the analog design, only the upper connecting edge 27 and the lateral connecting edge will be affected 29 of the first side wall 3 in the first connection section 7.
  • the end section 31 of the upper connecting edge 27 adjoining the third interruption 25 is formed by a rod-shaped section 33 of the upper flange 1, which extends between the upper connecting edge 27 itself and the inner edge of the recess 30.
  • the distance between the upper connecting edge 27 or the second edge 15 and the inner edge corresponds at least to the thickness of the sheet metal of the bent part 9.
  • the rod-shaped section 33 of the upper flange 1 projects like a finger in the width direction 6, so that the entire upper connecting edge 27, too in the bending area 10, runs straight.
  • an end section 32 of the lateral connecting edge 29 of the first side wall 3 adjoining the second interruption 24 is formed by a rod-shaped section 34 of the first side wall 3.
  • the interruptions 23, 24, 25, 26 are in order for a longer rod-shaped section 33 to be obtained, in comparison with the rod-shaped section 34, that is to say that the upper chord 1 and lower chord 2 have the longest possible connecting edge 27, 28 Fig. 2 seen in the width direction 6 - provided at or near that end of the bending region 10 which borders on the side wall 3, 4.
  • the recesses 30 are, however, approximately symmetrical to the bending region 10.
  • the interruptions 23, 24, 25, 26 coincide with the recesses 30, so that straight connecting edges 27, 28, 29 are formed, but due to the lack of the end sections 31, 32 or the rod-shaped sections 33, 34 are significantly shorter and the bending areas 10 are not recorded.
  • Figure 3 shows a second embodiment of the invention, in which the bent part 9 is formed in several pieces, more precisely than a first section 12 and a second section 13.
  • the two sections 12, 13 each have a U-shape and are divided by a parting plane 19 which runs along the length direction 5 and is normal to the width direction 6.
  • the dividing plane 19 divides the upper chord 1 and the lower chord 2 exactly in half in the width direction 6, so that the first section 12 comprises the first side wall 3, one half of the lower chord 2 and the upper chord 1 and the second section 13 the second side wall 4 and each includes the other half of the lower chord 2 and upper chord 1.
  • the sections 12, 13 can also be unwound, each section 12, 13 having two first edges 14, each on the left or right side, which first edges 14 each have a first Form connection section 16 and a second connection section 17.
  • the two sections 12, 13 are therefore connected to one another at the connecting sections 16, 17 by a connecting weld 18 designed as a butt seam. More precisely, the first connecting section 16 of the first section 12 is connected to the second connecting section 17 of the second section 13 on the lower flange 2 and the first connecting section 16 of the second section 13 is connected to the second connecting section 17 of the first section 12 upper flange 1.
  • the second embodiment differs from the first only in the sense that the connecting weld seam 18 on the upper chord 1 is interrupted by the upper opening 20, just as the connecting weld seam 18 on the lower chord 1 is interrupted by the lower opening 21.
  • bent part 9 a further division of the bent part 9 into several sections, for example four sections, is also conceivable, each of which is connected to one another along the connecting sections 16, 17.
  • connecting sections 16, 17 or the connecting weld seams 18 run outside the bent areas 10 in order to avoid stress concentration in the bent areas 10.
  • FIG 4 An embodiment variant of an undercarriage frame according to the invention is shown, the undercarriage frame comprising a first longitudinal beam 35 and a second longitudinal beam 36 in addition to the cross member designed as a bent part 9.
  • the longitudinal members 35, 36 each have a central section 37 in the center, as seen in the width direction 6 (corresponds to the longitudinal direction of the chassis frame).
  • the first longitudinal member 35 has a first longitudinal member connecting section in the central section 37 38 for connection to the cross member;
  • the second side member 36 has a second side member connecting section 39 in the central section 37 for connection to the cross member.
  • first longitudinal member connection section 38 is now connected to the second connection section 8 of the cross member and the second longitudinal member connection section 38 is connected to the first connection section 7 of the cross member.
  • the longitudinal beam connecting sections 38, 39 analogous to the connecting edges 27, 28, 29 of the connecting sections 7, 8 of the cross member, have longitudinal beam connecting edges 40, so that the longitudinal beam connecting edges 40 are arranged on the circumference of a rectangle.
  • the longitudinal beam connecting edges 40 comprise two pairs of mutually parallel edges which form a right angle with one another. In this case, two adjacent longitudinal beam connecting edges 40 do not touch one another and are entirely straight.
  • connection weld seams 41 designed as butt seams.

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Claims (19)

  1. Cadre de châssis d'un véhicule ferroviaire comportant deux longerons (35, 36) et une traverse qui relie les deux longerons (35, 36), dans lequel la traverse est réalisée en forme de caisse avec une membrure supérieure (1), une membrure inférieure (2) ainsi que deux parois latérales (3, 4) et présente, vue dans une direction longitudinale (5) côté extrémité respectivement une section de raccordement (7, 8) destinée à une liaison avec l'une des traverses (35, 36), dans lequel la traverse est une partie de pliage (9), dans lequel entre les parois latérales (3, 4) et la membrure supérieure (1) ainsi qu'entre les parois latérales (3, 4) et la membrure inférieure (2) une zone de pliage (10) est respectivement réalisée, et en ce que chaque traverse (35, 36) présente dans sa section centrale (37) une section de raccordement de traverse (38, 39), laquelle est reliée à l'une des sections de raccordement (7, 8) de la traverse, caractérisé en ce que chaque section de raccordement de traverse (38, 39) présente quatre arêtes de raccordement de traverse (40) qui s'étendent de manière linéaire et ne sont pas reliées entre elles, lesquelles sont agencées de préférence au niveau de la périphérie d'un rectangle et sont reliées à des arêtes de raccordement (27, 28, 29) de la traverse par le biais de joints de soudure de raccordement (41).
  2. Cadre de châssis selon la revendication 1, caractérisé en ce que la zone de pliage (10) est réalisée en tant que rayon de pliage (11), dans lequel le point central du rayon de pliage (11) se trouve à l'intérieur de la traverse.
  3. Cadre de châssis selon la revendication 1 ou 2, caractérisé en ce que la partie de pliage (9) resp. des portions (12, 13) de la partie de pliage (9) présentent respectivement deux sections de liaison (16, 17) destinées à fermer la partie de pliage (9) au niveau des premières arêtes (14) parallèles à la direction longitudinale (5).
  4. Cadre de châssis selon l'une des revendications 1 à 3, caractérisé en ce que la partie de pliage (9) est réalisée d'un seul tenant.
  5. Cadre de châssis selon la revendication 4, caractérisé en ce que la partie de pliage (9) présente une première section de liaison (16) et une seconde section de liaison (17) et en ce que la première section de liaison (16) est reliée à la seconde section de liaison (17) par l'intermédiaire d'un joint de soudure de liaison (18), de préférence une soudure.
  6. Cadre de châssis selon la revendication 4 ou 5, caractérisé en ce que les sections de liaison (16, 17) sont réalisées en tant que partie de la membrure inférieure (2) et sont de préférence orientées de manière symétrique en ce qui concerne une direction de la largeur (6) qui s'étend perpendiculairement à la direction longitudinale (5).
  7. Cadre de châssis selon l'une des revendications 1 à 3, caractérisé en ce que la partie de pliage (9) est réalisée en plusieurs parties et comprend au moins une première portion (12) et une seconde portion (13), dans lequel au moins un plan de partage (19) qui forme les portions (12, 13) est orienté parallèlement à la direction longitudinale (5).
  8. Cadre de châssis selon la revendication 7, caractérisé en ce que la partie de pliage (9) comprend exactement deux portions (12, 13), dans lequel chaque portion (12, 13) comprend respectivement une paroi latérale (3, 4) ainsi qu'une partie, de préférence la moitié, de la membrure supérieure (1) et de la membrure inférieure (2).
  9. Cadre de châssis selon la revendication 7 ou 8, caractérisé en ce que chaque portion (12, 13) présente une première section de liaison (16) et une seconde section de liaison (17) et respectivement la première section de liaison (16) d'une des portions (12, 13) est reliée à la seconde section de liaison (17) de la portion (12, 13) adjacente par l'intermédiaire d'un joint de soudure de liaison (18), de préférence une soudure.
  10. Cadre de châssis selon la revendication 5 ou 9, caractérisé en ce que les joints de soudure de liaison (18) s'étendent à l'extérieur des zones de pliage (10).
  11. Cadre de châssis selon l'une des revendications 1 à 10, caractérisé en ce que la traverse présente au niveau de sa surface d'enveloppe qui comprend la membrure supérieure (1), la membrure inférieure (2) ainsi que les parois latérales (3, 4), des ouvertures (20, 21, 22) au niveau d'au moins deux côtés opposés de la surface d'enveloppe.
  12. Cadre de châssis selon la revendication 11, caractérisé en ce que la membrure supérieure (1) présente au moins une ouverture supérieure (20) et la membrure inférieure (2) présente au moins une ouverture inférieure (21), dans lequel au moins l'ouverture supérieure (20) ou l'ouverture inférieure (21) occupe au moins 50 % de la surface de la membrure supérieure (1) resp. de la membrure inférieure (2).
  13. Cadre de châssis selon la revendication 11 ou 12, caractérisé en ce que les deux parois latérales (3, 4) présentent respectivement au moins une ouverture latérale (22), dans lequel l'ouverture latérale (22) d'une paroi latérale (3, 4) occupe au moins 25 % de la surface de la paroi latérale (3, 4) respective.
  14. Cadre de châssis selon l'une des revendications 1 à 13, caractérisé en ce que la section de raccordement (7, 8) prévue pour la liaison avec une traverse (35, 36) est réalisée lors du déroulement de la partie de pliage (9) par l'intermédiaire d'une seconde arête (15) de la partie de pliage (9) qui s'étend perpendiculairement à la direction longitudinale (5), laquelle arête s'étire de manière linéaire et est subdivisée par l'intermédiaire de discontinuités (23, 24, 25, 26).
  15. Cadre de châssis selon la revendication 14, caractérisé en ce que dans au moins une zone de pliage (10) une discontinuité (23, 24, 25, 26) est agencée.
  16. Cadre de châssis selon la revendication 14 ou 15, caractérisé en ce que quatre discontinuités (23, 24, 25, 26) sont prévues, lesquelles subdivisent la seconde arête (15) en une arête de raccordement supérieure (27) de la membrure supérieure (1), en une arête de raccordement inférieure (28) de la membrure inférieure (2) et deux arêtes de raccordement latérales (29) des parois latérales (3, 4).
  17. Cadre de châssis selon l'une des revendications 14 à 16, caractérisé en ce qu'au moins une des discontinuités (23, 24, 25, 26) pénètre dans un évidement (30), dans lequel les dimensions de l'évidement (30) sont plus grandes que les dimensions des discontinuités (23, 24, 25, 26).
  18. Cadre de châssis selon la revendication 17, caractérisé en ce que l'allongement maximal de l'évidement (30) dans la direction de la largeur (6) comprend au moins la zone de pliage (10) et l'allongement maximal de l'évidement (30) dans la direction longitudinale (5) représente entre 25 % et 75 %, de préférence entre 33 % et 66 %, en particulier entre 40 % et 60 %, de l'allongement maximal dans la direction de la largeur (6).
  19. Cadre de châssis selon la revendication 17 ou 18, caractérisé en ce qu'au moins une section d'extrémité (31, 32) de l'arête de raccordement (27, 28, 29) adjacente qui est adjacente à la discontinuité (23, 24, 25, 26) est réalisée par l'intermédiaire d'une section en forme de tige (33, 34) de l'élément (1, 2, 3, 4) qui constitue l'arête de raccordement (27, 28, 29) respective.
EP16706179.5A 2015-03-03 2016-02-24 Cadre de châssis d'un véhicule ferroviaire avec une traverse Active EP3227157B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50164/2015A AT516922A2 (de) 2015-03-03 2015-03-03 Querträger für einen Fahrwerksrahmen eines Schienenfahrzeugs
PCT/EP2016/053848 WO2016139096A1 (fr) 2015-03-03 2016-02-24 Traverse pour un cadre de châssis d'un véhicule ferroviaire

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EP3227157A1 EP3227157A1 (fr) 2017-10-11
EP3227157B1 true EP3227157B1 (fr) 2020-08-05

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CN113442966B (zh) * 2020-03-27 2022-10-18 比亚迪股份有限公司 用于轨道车辆的转向架和具有其的轨道车辆

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FR931591A (fr) * 1943-01-27 1948-02-26 Alsthom Cgee Nouveau mode de construction pour châssis de bogies ou trucks et organes analogues des locomotives et autres véhicules
JPS5788939A (en) * 1980-11-21 1982-06-03 Kawasaki Heavy Ind Ltd Truck frame
CN103085829A (zh) * 2013-01-29 2013-05-08 济南轨道交通装备有限责任公司 快速货车转向架

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AT516922A2 (de) 2016-09-15
WO2016139096A1 (fr) 2016-09-09
EP3227157A1 (fr) 2017-10-11

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