EP2174856B1 - Längsträger für Schienenfahrzeug - Google Patents

Längsträger für Schienenfahrzeug Download PDF

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Publication number
EP2174856B1
EP2174856B1 EP09290769.0A EP09290769A EP2174856B1 EP 2174856 B1 EP2174856 B1 EP 2174856B1 EP 09290769 A EP09290769 A EP 09290769A EP 2174856 B1 EP2174856 B1 EP 2174856B1
Authority
EP
European Patent Office
Prior art keywords
spar
side frame
core
bogie
carried out
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
EP09290769.0A
Other languages
English (en)
French (fr)
Other versions
EP2174856A1 (de
Inventor
Gérard LELASSEUX
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.)
CGL SAS
Original Assignee
CGL SAS
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 CGL SAS filed Critical CGL SAS
Priority to PL09290769T priority Critical patent/PL2174856T3/pl
Publication of EP2174856A1 publication Critical patent/EP2174856A1/de
Application granted granted Critical
Publication of EP2174856B1 publication Critical patent/EP2174856B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/50—Other details
    • B61F5/52—Bogie frames

Definitions

  • the present invention relates to a reinforced spar for a bogie especially for freight wagons.
  • a bogie consists essentially of longitudinal members which are joined in the vicinity of their center by a pivot crossbar.
  • a bogie 1 As represented on the figure 1 , comprises two longitudinal members 2, each of which is provided with a light near their center, and joined at the level of said light by a pivot crossbar 4. The latter ensures the connection of the bogie 1 with the wagon through 5.
  • the longitudinal members 2 comprise at each of their ends, housing 3 adapted to receive axle bearing boxes, which accommodate axles.
  • the bogie also includes other elements, well known to those skilled in the art, which have been deliberately omitted not to unnecessarily burden the figure, such as dampers, brake systems.
  • Such a bogie is for example known from WO 01/85522 .
  • the longitudinal members 2 have, as a general rule, a vertical section in the overall shape of I or double T and are composed of a core 6, an upper sole 7 and a lower sole 8 welded assemblies and dimensioned to support said loads.
  • the purpose of the present invention is therefore to overcome this disadvantage by reinforcing the spar 2.
  • the present invention relates to a reinforced bogie beam, intended in particular for freight wagons, having a generally I-shaped section and comprising a core, an upper sole and a lower sole joined by welding, said spar being remarkable in that the spar comprises a reinforcing means for moving the maximum stress zone of the weld zone between the core and the bottom flange to a zone in full metal.
  • the reinforcing means consist of a specific shape of the lower sole.
  • the specific shape of the lower sole is a notch made along each longitudinal edge of the lower sole of the spar on both sides of the core. This notch is preferably progressive.
  • full metal zone used in the context of the present invention means that said zone is located in the core or soles, with the exception of their edges and the contact surfaces between said webs and soles.
  • reinforcement means used in the scope of the present invention means that these means allow reinforcement of the spar by less stressing the weak part of said spar namely the junction between the core and the lower flange, at the weld.
  • the invention therefore consists in optimizing said indentations so that the reinforcement obtained compensates for and is greater than the increase in the generated flexibility.
  • the spar according to the invention is particularly interesting in that its manufacture is easy and does not require addition of material, which would have the effect of increasing its weight and price.
  • This spar 10 has a shape similar to the spar 2 according to the prior art shown in FIG. figure 1 .
  • it has a vertical section in the overall shape of I or double T and is composed of a vertical core 11, an upper sole 12 and a lower sole 13, all three of generally parallelepipedal shape, welded together and dimensioned to support in particular the loads recommended by the rules of construction.
  • Said top 12 and lower soles 13 are generally horizontal.
  • the spar 10 is provided, on the one hand, with a light 14 near the middle of its core 11 to accommodate a pivot crossbar which ensures the connection of the bogie with the wagon and, secondly, at each of its ends, housing 15 adapted to receive axle boxes, which accommodate axles for moving the bogie on rails.
  • said spar 10 differs fundamentally from the prior art in that it comprises reinforcing means for moving the zone of maximum stress of the weld zone between the core 11 and the lower flange 13 towards a zone in full metal.
  • This configuration makes it possible to increase the resistance of the bogie. Indeed, one can increase the value of said maximum stress since the latter is no longer at the weld seam which is located on either side of the core 11 and which is a zone of lesser resistance.
  • These reinforcement means advantageously consist of a specific form of the lower sole 13.
  • the specific shape of the lower sole 13 consists of a notch 16 formed along each longitudinal edge of the lower sole 13 of the spar 10 on either side of the core 11 substantially to the right of the light 14 of the core 11.
  • Said notch 16 is preferably made by removing material on both sides of the core 11 in a generally circular shape of large radius. However, it is understood that these material removal should not be too large so as to have a lower sole 13 wide enough to be compatible with mechanical stresses.
  • the spar 10 is, in normal use, subjected to a complex combination of multiple mechanical stresses of the shear, bending, compression and torsion type. It is therefore necessary to use a finite element calculation to understand the mechanical stresses of the spar when it is subjected to such efforts.
  • the finite element calculation makes it possible to optimize the shape of the indentations 16 as a function, in particular, of the type of spar 10, so that the reinforcement obtained compensates and is greater than the increase in flexibility.
  • the notches 16 will be made progressively, that is to say that the connection of the circular shapes with each of the edges of the lower sole 13 is made by another large radius circular shape that is tangent to the adjacent surfaces.
  • the longitudinal members 10 according to the invention may be incorporated in any known type of bogie, and in particular in accordance with the bogie shown in FIG. figure 1 , in respect of elements other than longitudinal members.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Laminated Bodies (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Claims (3)

  1. Verstärkter Längsträger (10) für Drehgestell, das insbesondere für Güterwagen bestimmt ist, aufweisend einen Querschnitt, der generell I-förmig ist und einen Steg (11), einen oberen Flansch (12) und einen unteren Flansch (13) aufweist, die durch Verschweißen zusammengefügt sind, dadurch gekennzeichnet, dass er Verstärkungseinrichtungen aufweist, die in einer bogenförmigen Aussparung (16) bestehen, welche durch Wegnehmen von Material erzielt wird und entlang jeder Längskante des unteren Flansches (13) des Längsträgers beiderseits des Stegs (11) realisiert ist.
  2. Verstärkter Längsträger (10) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die bogenförmigen Aussparungen (16) gemäß einer Form realisiert sind, die generell kreisförmig ist und großen Radius hat.
  3. Verstärkter Längsträger (10) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die bogenförmigen Aussparungen (16) in progressiver Weise realisiert sind, das heißt, dass der Anschluss der Kreisformen an jede der Kanten des unteren Flansches (13) mittels einer weiteren Kreisform von großem Radius erfolgt, welche die angrenzenden Flächen berührt.
EP09290769.0A 2008-10-10 2009-10-09 Längsträger für Schienenfahrzeug Active EP2174856B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09290769T PL2174856T3 (pl) 2008-10-10 2009-10-09 Ostojnica wózka wagonowego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0805598A FR2936998B1 (fr) 2008-10-10 2008-10-10 Longeron de bogie

Publications (2)

Publication Number Publication Date
EP2174856A1 EP2174856A1 (de) 2010-04-14
EP2174856B1 true EP2174856B1 (de) 2014-08-20

Family

ID=40637108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09290769.0A Active EP2174856B1 (de) 2008-10-10 2009-10-09 Längsträger für Schienenfahrzeug

Country Status (6)

Country Link
EP (1) EP2174856B1 (de)
ES (1) ES2522966T3 (de)
FR (1) FR2936998B1 (de)
HR (1) HRP20141075T1 (de)
PL (1) PL2174856T3 (de)
PT (1) PT2174856E (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2500233B1 (de) * 2011-03-16 2014-03-05 Bombardier Transportation GmbH Schienenfahrzeugeinheit mit Zugvorrichtung
AT516923A3 (de) * 2015-03-03 2018-01-15 Siemens Ag Oesterreich Längsträger und Querträger für einen Fahrwerksrahmen eines Schienenfahrzeuges
JP6556487B2 (ja) * 2015-04-24 2019-08-07 日本車輌製造株式会社 鉄道車両用台車

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1455797A (fr) * 1964-10-28 1966-05-20 Sncf Perfectionnements apportés aux bogies de véhicules ferroviaires comportant un châssis soudé à traverse centrale et longerons solidaires
US5111753A (en) * 1990-12-21 1992-05-12 Amsted Industries Incorporated Light weight fatigue resistant railcar truck bolster
PL196349B1 (pl) * 2000-05-10 2007-12-31 Bombardier Transp Polska Sp Z Rama wózka pojazdu szynowego, zwłaszcza do wagonów towarowych

Also Published As

Publication number Publication date
ES2522966T3 (es) 2014-11-19
FR2936998A1 (fr) 2010-04-16
PL2174856T3 (pl) 2015-03-31
PT2174856E (pt) 2014-11-10
EP2174856A1 (de) 2010-04-14
FR2936998B1 (fr) 2014-05-02
HRP20141075T1 (hr) 2015-01-02

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