EP0446879B1 - Eisenbahnschiene mit Verschleissprofil - Google Patents

Eisenbahnschiene mit Verschleissprofil Download PDF

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Publication number
EP0446879B1
EP0446879B1 EP91103790A EP91103790A EP0446879B1 EP 0446879 B1 EP0446879 B1 EP 0446879B1 EP 91103790 A EP91103790 A EP 91103790A EP 91103790 A EP91103790 A EP 91103790A EP 0446879 B1 EP0446879 B1 EP 0446879B1
Authority
EP
European Patent Office
Prior art keywords
rail
curvature
radius
running
rail head
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.)
Expired - Lifetime
Application number
EP91103790A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0446879A1 (de
Inventor
Wilhelm Dr.-Ing. Heller
Hans Dipl.-Ing. Schultheiss
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.)
Thyssen Stahl AG
Original Assignee
Thyssen Stahl AG
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 Thyssen Stahl AG filed Critical Thyssen Stahl AG
Publication of EP0446879A1 publication Critical patent/EP0446879A1/de
Application granted granted Critical
Publication of EP0446879B1 publication Critical patent/EP0446879B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B5/00—Rails; Guard rails; Distance-keeping means for them
    • E01B5/02—Rails
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B5/00—Rails; Guard rails; Distance-keeping means for them
    • E01B5/02—Rails
    • E01B5/14—Rails for special parts of the track, e.g. for curves

Definitions

  • the invention relates to a railroad track, in particular a railroad track with an initial profile of the rail head which is standardized by the International Union of Railways UIC and which corresponds to the unit wear profile which arises in rail operation and which has a tread which is curved upwards across the width of the rail head and has a radius of curvature which decreases from the middle of the rail area to the running edges.
  • Curve rails are subject to increased wear and tear and fatigue damage, such as "shelling” (edge breakouts) and “headchecking” (contact fatigue cracks). Both types of damage adversely affect the driving behavior of the trains and the durability of the superstructure. They lead to premature failure and expansion of the rails and can even develop into cross breaks. With the introduction and improvement of wheel flange lubrication, rail wear has decreased and susceptibility to fatigue damage has increased.
  • the problems described can be substantially alleviated if, in the case of a rail of the type mentioned at the outset, the starting profile of the rail head has a radius of curvature on the driving edges, the length of which is 1/13 to 1/17 the length of the radius of curvature of the tread in the middle of the rail head area.
  • the radius of curvature at the edges is 17 to 23 mm.
  • the radius of curvature at the running edges is 18 to 22 mm, which is 5 to 9 mm larger than the previous edge radius of the Standard profile of 13 mm.
  • the driving edge sections which are kept flatter according to the invention, are the cause of the reduced susceptibility of the rails according to the invention with regard to wear and fatigue damage, such as driving edge breakouts and contact fatigue cracks.
  • the profile of the rail head according to the invention can be used in all common rail profiles according to the UIC standard. It is only necessary that the driving edge radii previously kept small are increased in accordance with the design rule according to the invention. Tests have shown that UIC 60 rails with the now increased edge radii (e.g. 20 mm) after two to three years in curves with 400 to 600 m track radius did not yet have any contact between the wheel and rail, ie the rolling surface was still present at this point. With rails designed according to the invention, the lifespan of curved rails becoming defective can thus be extended by two to three years. With an average lifespan of cam tracks of approx. 12 years, this corresponds to an increase in lifespan by 25%.
  • a rail UIC 60 redesigned according to the invention is shown to scale in cross section.
  • the rail 1 has a rail head 2.
  • the edges 4 each have radii T3 of 20 mm.
  • edge radii T4 13 mm of the "old" UIC profile are shown in broken lines.
  • the profile according to the invention is thus arched flatter in the rounded transition area on the driving edge surfaces than the previously standardized unit wear profile of the UIC 60 rail.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Articles (AREA)
EP91103790A 1990-03-15 1991-03-13 Eisenbahnschiene mit Verschleissprofil Expired - Lifetime EP0446879B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4008299 1990-03-15
DE4008299A DE4008299C1 (enrdf_load_stackoverflow) 1990-03-15 1990-03-15

Publications (2)

Publication Number Publication Date
EP0446879A1 EP0446879A1 (de) 1991-09-18
EP0446879B1 true EP0446879B1 (de) 1993-05-19

Family

ID=6402280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91103790A Expired - Lifetime EP0446879B1 (de) 1990-03-15 1991-03-13 Eisenbahnschiene mit Verschleissprofil

Country Status (2)

Country Link
EP (1) EP0446879B1 (enrdf_load_stackoverflow)
DE (2) DE4008299C1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1091044A1 (de) 1999-09-10 2001-04-11 Deutsche Bahn AG Kontaktflächen zwischen Schiene und Rad

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4124913C2 (de) * 1991-07-26 1994-01-05 Butzbacher Weichenbau Gmbh Kontaktflächen eines Gleisbauteils wie Schiene oder Weichenbauteil und eines auf diesem fahrenden Rades eines Schienenfahrzeuges
AT409872B (de) * 1998-03-20 2002-12-27 Oesterr Bundesbahnen Gleisoberbau mit einem gleis mit zumindest zwei schienen sowie schiene
DE10107746A1 (de) * 2001-02-07 2003-04-03 Schreck Mieves Gmbh Schiene für gleisgebundene Tagebaugrossgeräte
GB2436843B (en) * 2006-04-07 2008-02-27 Daniel Docherty Three piece railway check rail

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1569557A (en) * 1925-05-20 1926-01-12 Samuel W Simonds Railroad-track curve
DE1721757U (de) * 1953-07-14 1956-05-09 Franz Dipl Ing Schoen Schiene fuer schienenbahngleise.
US3469784A (en) * 1967-06-06 1969-09-30 Jackson E Campbell Apparatus for reducing shells in outer-curve rails

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1091044A1 (de) 1999-09-10 2001-04-11 Deutsche Bahn AG Kontaktflächen zwischen Schiene und Rad
DE10044970B4 (de) * 1999-09-10 2004-04-15 Db Netz Ag Kontaktflächen zwischen Rad und Schiene

Also Published As

Publication number Publication date
DE59100114D1 (de) 1993-06-24
DE4008299C1 (enrdf_load_stackoverflow) 1991-07-25
EP0446879A1 (de) 1991-09-18

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