EP0388190A1 - Semelles pour rails, et méthode de modification de voies de chemin de fer utilisant de telles semelles - Google Patents

Semelles pour rails, et méthode de modification de voies de chemin de fer utilisant de telles semelles Download PDF

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Publication number
EP0388190A1
EP0388190A1 EP90302747A EP90302747A EP0388190A1 EP 0388190 A1 EP0388190 A1 EP 0388190A1 EP 90302747 A EP90302747 A EP 90302747A EP 90302747 A EP90302747 A EP 90302747A EP 0388190 A1 EP0388190 A1 EP 0388190A1
Authority
EP
European Patent Office
Prior art keywords
pad
rail
studs
protuberances
edges
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
EP90302747A
Other languages
German (de)
English (en)
Other versions
EP0388190B1 (fr
Inventor
Geoffrey Gordon Leeves
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
Priority to AT90302747T priority Critical patent/ATE92126T1/de
Publication of EP0388190A1 publication Critical patent/EP0388190A1/fr
Application granted granted Critical
Publication of EP0388190B1 publication Critical patent/EP0388190B1/fr
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
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
    • E01B9/685—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by their shape
    • E01B9/686—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by their shape with textured surface

Definitions

  • a pad which is suitable to be placed on a foundation for a railway rail and to have the rail standing on it, the pad being generally rectangular and comprising a web from which, when the web is lying horizontally, protuberances project upwardly but no protuberances project downwardly, characterised in that there are tens of the protuberances in the form of studs, each of which, except possibly at the edges of the pad, is completely surrounded by a portion of the web which is free from protuberances, the studs having convexly rounded tips and all the studs, except possibly at the edges of the pad, being substantially identical and of circular cross-section and further characterised in that the pad has two ears projecting laterally from each of two opposite edges of the pad to receive between them a part projecting upwardly from the rail foundation whereby the pad is prevented from moving along the rail and still further characterised in that the pad is no more than 6.5mm. thick.
  • a pad embodying the first aspect of the present invention is no more that 6mm. thick, and is desirably about 5.5mm. thick.
  • the studs are in parallel rows and in parallel columns inclined by an acute angle to the rows.
  • each stud is surrounded by six other studs none of which is at a distance from it greater than the thickness of the stud.
  • the studs at each of two opposite edges of the pad are wider, in a direction from one of said edges to the other, than the studs nearer the centre of the pad.
  • DE-1014139 discloses a pad which is suitable to be placed on a foundation for a railway rail and to have the rail standing on it, the pad being generally rectangular and comprising a web from which, when the web is lying in a particular orientation, protuberances project upwardly but no protuberances project downwardly.
  • the protuberances on the pad disclosed in DE-1014139 are very few and they are large and widely spaced apart and are joined together by cross-pieces which undesirably limit the flexibility of the pad.
  • a method of upgrading a section of railway track in which a rail stands on a first pad which lies on a foundation in which method the pad is replaced by a second pad embodying the first aspect of the present invention and of substantially the same thickness, when compressed, as is the first pad, when compressed, or no more than about 1mm. thicker.
  • the pad illustrated in the drawings consists of a single moulding of polyurethane and is generally rectangular as seen in plan view. It consists of a generally rectangular web 1 2.5mm. thick having many protuberances in the form of studs 2 of circular cross-section and studs 3 of elongate cross-section on one face 4 of the web. On the opposite face 5 of the web there are no protuberances and no recesses. The distance from the face 5 to the tips of the studs 2 and 3 is 5.5mm..
  • the studs 2 have a diameter of 9.75mm. at their tips and a slightly larger diameter at their roots because their flanks are inclined by an angle X of about 5 o to the normal 6 to the web.
  • the tips of the studs 2 are convex with a radius of 24mm..
  • the studs 3 have a flat area 3A at their tips and a convexly curved area 3B at the sides of their tips nearer the centre of the pad.
  • the studs 2 are arranged in columns which are vertical in Figure 1 and in rows which are inclined by an acute angle Y to the columns. There are eight columns each with eleven studs 2 and one stud 3 at each end of the column and, between those columns, seven columns each consisting of twelve studs 2.
  • the pitches of the studs 2 in the columns are 11mm. and the columns themselves have a pitch of 12.7mm., measured perpendicularly to the columns. Where two studs 2 or one stud 2 and one stud 3 in any one column have their roots adjoining one another there is a radius R of 0.55mm..
  • each of two opposite edges of the web there is a region 7 where the web thickness is 4mm. and from each region 7 there project two ears 8 of the same thickness as the region 7, the intention being that a clip-retaining member for a so-called P-R clip or an e-clip is to lie partly between each two adjacent ears 8 whereby any tendency for the pad to move along the rail is opposed.
  • a pad embodying the first aspect of the present invention can isolate the rail foundation from approximately 40% of a 40kHz vibratory force applied to the overlying rail.
  • a pad embodying the first aspect of the present invention could be made of any other suitably robust or hardened material, such as polyester, polyethylene or rubber.
  • a suitable adhesive for example a concrete beam upon which two rails rest, or a block upon which only one rail rests and forming part of a sleeper comprising two blocks joined together by a steel tie-bar, or a long slab of concrete extending along the railway track.
  • a suitable adhesive for example a cement beam upon which two rails rest, or a block upon which only one rail rests and forming part of a sleeper comprising two blocks joined together by a steel tie-bar, or a long slab of concrete extending along the railway track.
  • an adhesive to a steel railway sleeper.
  • an entirely different pad but having protuberances and/or recesses on its upper face, but not on its lower face, may also have its lower face secured by an adhesive to a concrete or steel rail foundation.
  • Pads according to the first aspect of the present invention are preferably employed in methods embodying the second aspect of the present invention, as will now be described.
  • the rail fastening means comprise rail clips, such as a P-R clip or an e-clip, and to release the rail from retention by such clips the clips are extracted from respective clip-retaining members embedded in, or otherwise attached to, the rail foundation.
  • a pad embodying the first aspect of the present invention, which is of substantially the same thickness, when compressed, as the pad that it is replacing, when that pad is compressed, or no more than about 1mm. thicker. Since pads embodying the first aspect of the present invention have protuberances on only one face, it is possible to manufacture a pad which better isolates the foundation from dynamic forces than the pad which it is to replace, but is at the same time not substantially thicker than that pad.
  • pads used in railway track to which methods embodying the second aspect of the present invention may be applied are generally 4.5mm. to 6.5mm. thick, and are typically 5.5mm. in overall thickness
  • pads embodying the first aspect of the present invention when compressed, are, when compressed, no more than 6.5mm. thick, are preferably no more than 6mm. thick, and are desirably about 5.5mm. thick.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Inorganic Insulating Materials (AREA)
  • Liquid Crystal (AREA)
  • Lead Frames For Integrated Circuits (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
EP90302747A 1989-03-15 1990-03-15 Semelles pour rails, et méthode de modification de voies de chemin de fer utilisant de telles semelles Expired - Lifetime EP0388190B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90302747T ATE92126T1 (de) 1989-03-15 1990-03-15 Schienenunterlagen und verfahren zur verbesserung von eisenbahngleisen unter verwendung solcher unterlagen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8905917 1989-03-15
GB898905917A GB8905917D0 (en) 1989-03-15 1989-03-15 Rail pads

Publications (2)

Publication Number Publication Date
EP0388190A1 true EP0388190A1 (fr) 1990-09-19
EP0388190B1 EP0388190B1 (fr) 1993-07-28

Family

ID=10653357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90302747A Expired - Lifetime EP0388190B1 (fr) 1989-03-15 1990-03-15 Semelles pour rails, et méthode de modification de voies de chemin de fer utilisant de telles semelles

Country Status (6)

Country Link
EP (1) EP0388190B1 (fr)
AT (1) ATE92126T1 (fr)
CA (1) CA2012143A1 (fr)
DE (1) DE69002354D1 (fr)
ES (1) ES2043272T3 (fr)
GB (2) GB8905917D0 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994025675A2 (fr) * 1993-04-28 1994-11-10 Udo Wirthwein Fixation elastique de rails
WO2011020794A1 (fr) * 2009-08-21 2011-02-24 Pandrol Limited Semelle de rail de chemin de fer
US8888012B2 (en) 2009-08-21 2014-11-18 Pandrol Limited Insulator for railway fastening clip and railway rail fastening clip for use therewith
EP2559810A3 (fr) * 2011-08-13 2014-12-17 Calenberg Ingenieure GmbH Appui en élastomère
WO2024064530A3 (fr) * 2022-09-20 2024-05-10 Progress Rail Services Corporation Système de fixation de rail de voie et garniture de rail pour celui-ci

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2156564B1 (es) * 1999-08-19 2002-04-01 Plasticos Mondragon Sa Placa elastica de asiento para carril ferroviario.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7718527U1 (de) * 1977-06-11 1977-10-06 Continental Gummi-Werke Ag, 3000 Hannover Elastische schotterbettunterlage
GB2094377A (en) * 1981-02-16 1982-09-15 Arun Plastics Ltd Railway track pads
EP0169685A2 (fr) * 1984-07-13 1986-01-29 Pandrol Limited Semelles de rails
EP0236703A2 (fr) * 1986-03-12 1987-09-16 CLOUTH Gummiwerke AG Support de rail amortissant le bruit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7718527U1 (de) * 1977-06-11 1977-10-06 Continental Gummi-Werke Ag, 3000 Hannover Elastische schotterbettunterlage
GB2094377A (en) * 1981-02-16 1982-09-15 Arun Plastics Ltd Railway track pads
EP0169685A2 (fr) * 1984-07-13 1986-01-29 Pandrol Limited Semelles de rails
EP0236703A2 (fr) * 1986-03-12 1987-09-16 CLOUTH Gummiwerke AG Support de rail amortissant le bruit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994025675A2 (fr) * 1993-04-28 1994-11-10 Udo Wirthwein Fixation elastique de rails
WO1994025675A3 (fr) * 1993-04-28 1995-01-12 Udo Wirthwein Fixation elastique de rails
WO2011020794A1 (fr) * 2009-08-21 2011-02-24 Pandrol Limited Semelle de rail de chemin de fer
CN102472020A (zh) * 2009-08-21 2012-05-23 潘得路有限责任公司 铁轨垫板
CN102472020B (zh) * 2009-08-21 2014-04-23 潘得路有限责任公司 铁轨垫板
US8888012B2 (en) 2009-08-21 2014-11-18 Pandrol Limited Insulator for railway fastening clip and railway rail fastening clip for use therewith
US8905322B2 (en) 2009-08-21 2014-12-09 Pandrol Limited Railway rail pad
EP2559810A3 (fr) * 2011-08-13 2014-12-17 Calenberg Ingenieure GmbH Appui en élastomère
WO2024064530A3 (fr) * 2022-09-20 2024-05-10 Progress Rail Services Corporation Système de fixation de rail de voie et garniture de rail pour celui-ci

Also Published As

Publication number Publication date
GB2229213B (en) 1993-03-10
EP0388190B1 (fr) 1993-07-28
GB8905917D0 (en) 1989-04-26
GB2229213A (en) 1990-09-19
ATE92126T1 (de) 1993-08-15
ES2043272T3 (es) 1993-12-16
CA2012143A1 (fr) 1990-09-15
DE69002354D1 (de) 1993-09-02
GB9005892D0 (en) 1990-05-09

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