EP1499777A1 - Bride de fixation de rail de chemin de fer - Google Patents

Bride de fixation de rail de chemin de fer

Info

Publication number
EP1499777A1
EP1499777A1 EP03747358A EP03747358A EP1499777A1 EP 1499777 A1 EP1499777 A1 EP 1499777A1 EP 03747358 A EP03747358 A EP 03747358A EP 03747358 A EP03747358 A EP 03747358A EP 1499777 A1 EP1499777 A1 EP 1499777A1
Authority
EP
European Patent Office
Prior art keywords
clip
substantially flat
longitudinally
rod
bent
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
Application number
EP03747358A
Other languages
German (de)
English (en)
Other versions
EP1499777B1 (fr
Inventor
Barry Marshall
Martin Somerset
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.)
Pandrol Ltd
Original Assignee
Pandrol Ltd
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 Pandrol Ltd filed Critical Pandrol Ltd
Publication of EP1499777A1 publication Critical patent/EP1499777A1/fr
Application granted granted Critical
Publication of EP1499777B1 publication Critical patent/EP1499777B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E01B9/28—Fastening on wooden or concrete sleepers or on masonry with clamp members
    • E01B9/30—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips
    • E01B9/303—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips the clip being a shaped bar
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/38—Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs
    • E01B9/44—Fastening the rail on the tie-plate
    • E01B9/46—Fastening the rail on the tie-plate by clamps
    • E01B9/48—Fastening the rail on the tie-plate by clamps by resilient steel clips
    • E01B9/483—Fastening the rail on the tie-plate by clamps by resilient steel clips the clip being a shaped bar

Definitions

  • the present invention relates to a railway rail fastening clip.
  • the clip 90 is made of a rod of metal bent so as to have, proceeding along the rod from one end thereof to the other end, firstly a substantially straight first portion 10, then a bent second portion 20, then a substantially straight third portion 30 the axis of which makes an angle substantially more than
  • the fifth and seventh portions 50, 70 appear to be on opposite sides of the third portion 30.
  • the clip 90 In use on a timber sleeper 100 the clip 90 is placed so that the seventh portion 70 rests on a foot
  • the first portion 10 projects into a blind round hole 140 in the sleeper 100, and a screwspike 130 is inserted between the third and fifth portions 30, 50 into the sleeper 100.
  • the clip 90 is retained in a position in which the toe 70 of the clip 90 bears on the rail foot 120 to hold down the rail 110 and lateral parts of the second and third portions 20, 30 of the clip 90 contact the edge of ⁇ -he rail foot 120 so as ensure gauge retention, i.e. so as to prevent sideways movement of the rail 110.
  • the applicants have now identified improvements which may be made to such a clip 90.
  • the hole 140 in the sleeper 100 into which the first portion 10 is inserted must be drilled slightly larger than the diameter of the first portion 10 (for example with a diameter of 15mm to accommodate a first portion 10 of 14mm diameter) so as to avoid the so- called “pneumatic effect" which can cause difficulty in entering the first portion 10 into the blind hole 140 and when extracting the first portion 10 of the clip 90 from the hole 140 during a track de-stressing operation.
  • the first portion 10 should ideally be more close fitting in the hole 140 so as to control lateral movement_ of the- rail foot 120.
  • a resilient railway rail fastening clip the clip being a rod of metal which has been bent so as to have, proceeding along the rod from one end of it to the other end, firstly a substantially straight first portion, then a bent second portion, then a substantially straight third portion the axis of which makes an angle substantially more than 45° with the axis of the first portion, the two axes lying in the same plane as one another, then a fourth portion which is a reverse bend, then a fifth portion, then a sixth portion which is another reverse bend and finally a seventh portion, the construction being such that it is possible to place the clip in a particular position such that the third portion is horizontal and the first portion extends downwardly and such thai-, when the clip is viewed from above the fifth and seventh portions appear to be on opposite sides of the third portion, characterised in that the first portion is formed so as to comprise a region having a generally cylindrical surface extending along its entire length and a longitudinally-extending part having a surface which is less
  • Manufacturing the first portion of the clip in this manner removes the pneumatic resistance and allows the first portion of the clip to be inserted into, and extracted from, a blind hole in the sleeper more easily.
  • the surface of the longitudinally- extending part is substantially flat.
  • the surface of the longitudinally- extending part is concave.
  • the rod forming the clip has a generally circular cross-section.
  • the second and third portions of the prior art clip therefore make only line contact with the flat edge of the rail, as a consequence of which the contact pressures are high and premature wear takes place, generating a flat on the clip in these regions and consequently causing some slight gauge widening.
  • At least part of the second portion and at least part of the third portion are manufactured so as to have substantially flat surfaces on respective lateral regions thereof which contact the rail when the clip is in use.
  • the substantially flat surface of the second portion is contiguous with the substantially flat surface of the third portion.
  • Figures 1 and 2 show a prior art railway rail fastening assembly
  • Figures 3 to 7 show respective perspective, plan, side elevational, front elevational and rear elevational views of a resilient railway rail fastening clip embodying the present invention
  • Figure 8 shows a perspective, partially cut-away view of part of a railway rail fastening assembly incorporating a clip embodying the present invention
  • Figures 9(A) to 9(D) are views for use in explaining a method of making a clip embodying the present invention.
  • FIG. 10 shows an alternative clip embodying the present invention.
  • a resilient railway rail fastening clip 9 embodying the present invention is formed from a rod of metal so as to comprise, proceeding from one end A of the rod to the other end B of the rod, a substantially straight first portion 1, a bent second portion 2, a substantially straight third portion 3, a bent fourth portion 4, a fifth portion 5, a bent sixth portion 6 and a seventh portion 7 forming the toe of the clip 9.
  • the longitudinal axes of the first portion 1 and the third portion 3 lie in the same plane, the axis of the third portion 3 making an angle with the axis of the first portion 1.
  • the angle c- is 90°, but ⁇ could be any angle substantially more than 45°.
  • the clip 9 is held down such that the toe of the clip bears on the rail foot 12 by a screwspike 13 screwed into the timber sleeper 15, the head of which screwspike 13 bears on the third and fifth portions 3, 5 of the clip.
  • the clip 9 is manufactured so as to have on the first portion 1 a region having a generally cylindrical surface IB extending along its entire length and a longitudinally-extending part 1A having a surface which is less' convex than the generally cylindrical surface region IB.
  • the longitudinally- extending part comprises a flat face 1A.
  • the clip 9 is also manufactured in this embodiment so as to have a flat face 2A on the second portion 2 and a flat face 3A on the third portion 3, the flat faces 2A and 3A being on respective lateral regions of the second and third portions 2, 3 which contact the edge of the rail foot 12.
  • the flat face 1A is contiguous with the flat face 2A, which is in turn contiguous with the flat face 3A, but this is not essential.
  • the flat face 1A on the first portion 1 serves to avoid the pneumatic resistance which would otherwise occur when the first portion 1 is inserted into a blind hole 14 in the sleeper 15 of the same, rather than slightly larger, diameter, thereby permitting a closer fit of the first portion 1 in the hole 14 and thus inhibiting lateral movement of the rail foot 12.
  • the flat face 1A could be replaced by a concave channel 1C formed in the first portion 1 to achieve the same purpose, but for ease of manufacture it is preferable to have a flat face 1A, desirably on the same side of the clip as the flat faces 2A, 3A.
  • the pre-formed flat faces 2A and 3A on the second and third portions 2,3 of the clip 9 serve to prevent the gauge widening which would otherwise occur in these regions if they were of round cross-section and a flat face was worn on these regions.
  • Such pre-formed flat faces could also advantageously be applied to a rail clip not having a flat face or concave channel on the downward leg.
  • a clip 9 having ,the flat faces 1A, 2A and 3A can be made using the method illustrated in Figures 9 (A) to 9(D) .
  • Fig. 9(A) a pre-bent form is supported horizontally and the flat faces 1A, 2A and 3A are formed by pressing in the direction of arrow A.
  • the partially-formed clip is then supported vertically (Fig. 9(B)) and a force applied in the direction of arrow B (Fig. 9(C)) to the part which is to form the seventh portion 7 in order to bend that part to its final shape, thereby forming a clip embodying the present invention (Fig. 9(D)).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)
  • Clamps And Clips (AREA)
  • Connection Of Plates (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Passenger Equipment (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Insertion Pins And Rivets (AREA)

Abstract

L'invention concerne une bride (9) de fixation de rail de chemin de fer résiliante, composée d'abord d'une première partie sensiblement droite (1), puis d'une seconde partie courbe (2), ensuite d'une troisième partie sensiblement droite (3) dont l'axe forme un angle sensiblement supérieur à 45° avec l'axe de la première partie (1), ces deux axes se trouvant dans le même plan, puis d'une quatrième partie (4) qui forme un U, d'une cinquième partie (5), d'une sixième partie (6) formant un autre U, et enfin d'une septième partie (7). La forme de la première partie (1) définit une zone (1B) de surface généralement cylindrique s'étendant sur toute sa longueur ainsi qu'une section (1A) longitudinale dont la surface est moins convexe que la zone (1B) de surface généralement cylindrique de la première partie (1). La seconde partie (2) et la troisième partie (3) sont de préférence au moins partiellement dotées de surfaces (2A, 3A) sensiblement plates sur leurs côtés respectifs, en contact avec le rail lorsque la bride (9) est en place.
EP03747358A 2002-04-30 2003-04-04 Bride de fixation de rail de chemin de fer Expired - Lifetime EP1499777B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0209867 2002-04-30
GB0209867A GB2388141B (en) 2002-04-30 2002-04-30 Railway rail fastening clip
PCT/GB2003/001480 WO2003093580A1 (fr) 2002-04-30 2003-04-04 Bride de fixation de rail de chemin de fer

Publications (2)

Publication Number Publication Date
EP1499777A1 true EP1499777A1 (fr) 2005-01-26
EP1499777B1 EP1499777B1 (fr) 2007-03-07

Family

ID=9935796

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03747358A Expired - Lifetime EP1499777B1 (fr) 2002-04-30 2003-04-04 Bride de fixation de rail de chemin de fer

Country Status (12)

Country Link
EP (1) EP1499777B1 (fr)
CN (1) CN1304696C (fr)
AR (1) AR039503A1 (fr)
AU (1) AU2003226532A1 (fr)
BR (1) BR0309538B1 (fr)
DE (1) DE60312313T2 (fr)
EC (1) ECSP045398A (fr)
GB (1) GB2388141B (fr)
MY (1) MY131242A (fr)
PE (1) PE20031043A1 (fr)
UY (1) UY27782A1 (fr)
WO (1) WO2003093580A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1449890A (en) * 1973-12-28 1976-09-15 Pandrol Ltd Fastening railway rails
GB8629513D0 (en) * 1986-12-10 1987-01-21 Pandrol Ltd Railway rail-fastening clip
FR2621619B1 (fr) * 1987-10-07 1990-03-02 Allevard Ind Sa Attache de fixation de rail de chemin de fer comportant des moyens d'arret de deplacement et ressort d'attache
FR2639971B1 (fr) * 1988-12-02 1991-02-08 Vape Sa Ets Bride de fixation rapide d'un rail de chemin de fer et traverse munie d'une telle bride
DE19607339A1 (de) * 1996-02-27 1997-08-28 Vossloh Werke Gmbh Vorrichtung zur hochelastischen Befestigung von Eisenbahn-Schienen auf Standard-Betonschwellen
GB2358034B (en) * 1997-07-15 2001-09-26 Pandrol Ltd Railway rail fastening assembly
CA2270299A1 (fr) * 1998-10-14 2000-04-14 Jude Igwemezie Dispositif de retention de rail

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03093580A1 *

Also Published As

Publication number Publication date
CN1304696C (zh) 2007-03-14
EP1499777B1 (fr) 2007-03-07
DE60312313D1 (de) 2007-04-19
AU2003226532A1 (en) 2003-11-17
GB2388141A (en) 2003-11-05
BR0309538A (pt) 2005-02-01
ECSP045398A (es) 2005-01-28
BR0309538B1 (pt) 2013-04-30
WO2003093580A1 (fr) 2003-11-13
GB0209867D0 (en) 2002-06-05
MY131242A (en) 2007-07-31
DE60312313T2 (de) 2007-06-14
AR039503A1 (es) 2005-02-23
CN1650070A (zh) 2005-08-03
UY27782A1 (es) 2003-05-30
GB2388141B (en) 2005-05-25
PE20031043A1 (es) 2004-02-09

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