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WO1997027367A1 - Joint pour rails - Google Patents

Joint pour rails Download PDF

Info

Publication number
WO1997027367A1
WO1997027367A1 PCT/GB1997/000237 GB9700237W WO9727367A1 WO 1997027367 A1 WO1997027367 A1 WO 1997027367A1 GB 9700237 W GB9700237 W GB 9700237W WO 9727367 A1 WO9727367 A1 WO 9727367A1
Authority
WO
WIPO (PCT)
Prior art keywords
rail
assembly
joint
railway rail
railway
Prior art date
Application number
PCT/GB1997/000237
Other languages
English (en)
Inventor
Timothy Alan Wood
Stephen Bernard Silk
Original Assignee
Wood Timothy A
Silk Stephen B
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 Wood Timothy A, Silk Stephen B filed Critical Wood Timothy A
Priority to AU15508/97A priority Critical patent/AU1550897A/en
Publication of WO1997027367A1 publication Critical patent/WO1997027367A1/fr

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
    • E01B11/00—Rail joints
    • E01B11/54—Electrically-insulating rail joints

Definitions

  • the present invention relates to a railway rail joint assembly.
  • a railway rail joint assembly comprising first and second railway rail sections, each rail section having an end portion shaped so as to fit against, or closely adjacent to, the other rail section, and connection means for joining together the first and second railway rail sections when the assembly is in use, wherein the shaping of the end portions is such that those portions are elongate and, when the assembly is in use, extend alongside one another substantially in a direction parallel to the longitudinal axis of the first and second railway rail sections and wherein the said connection means comprise at least one connection element which extends, transversely with respect to said longitudinal axis, through respective holes formed in the said end portions.
  • Such a railway rail joint assembly can eliminate the problem of rail end batter, since there is a progressive changeover between the rails, thereby not only extending the service life of a joint but also greatly reducing the maintenance attention required to maintain vertical alignment of the joint, which will be especially useful in remote areas. Moreover, the assembly provides a much stronger joint and is cheaper than the prior art . Joint bars are no longer required and therefore standard rail fastening clips, rather than modified components, may be used.
  • Each rail section is conveniently formed by machining a length of the standard rail with which the joint is to be used.
  • each rail section may be formed by machining a length of steel to the appropriate shape, in a manner similar to that by which standard rails are themselves formed.
  • the gap separating the end portions of the first and second railway rail sections is substantially filled by an elongate insulating member.
  • Figures IA to IC show respective cross-sectional, plan and side elevational views of a conventional railway rail joint assembly, Figure IA being a part cross-section taken along the line I-I in Figure IB;
  • Figure 2 shows a plan view of another previously- proposed railway rail joint assembly,-
  • Figures 3A to 3C show respective plan, cross- sectional and side views of a railway rail joint assembly embodying the present invention, Figure 3B being a part cross-section taken along line III-III in Figure 3A;
  • Figures 4A to 4D show respective plan, end elevational, side elevational and cross-sectional views of one railway rail section for use in an assembly embodying the present invention, the cross-sectional view of Figure 4D being taken along the line IV-IV in Figure 4A;
  • Figures 5A and 5B show respective plan and side elevational views of an insulating member for use in an assembly embodying the present invention
  • Figures 6A and 6B and Figures 7A and 7B show further components for use in an assembly embodying the present invention.
  • Figures IA to IC illustrate the type of conventional joint assembly mentioned above which employs joint bars, Figures IA to IC showing only one of the two adjoining rails in the assembly.
  • a rail 1 having a head la, foot lb and interconnected web lc, rests on a concrete sleeper 2.
  • the end of the rail abuts against the end of a successive rail such that the angle of the joint between them is perpendicular to the length of the rails.
  • a resilient rail pad 3 of moulded plastics material.
  • the rail 1 is positioned between a pair of anchoring devices 4 each having a head portion 4a, located above the surface of the sleeper 2 and having a passageway 4b running therethrough parallel to the longitudinal axis of the rail 1, and a leg portion 4c, embedded in the concrete sleeper 2.
  • the rail 1 is held in place by resilient rail fastening clips 5, each having a leg 5a, which abuts against the roof of the passageway 4b in one of the anchoring devices 4, a heel portion 5b which rests on a ledge 4d provided on the head portion 4a of the anchoring device 4 at the side of the passageway 4b remote from the rail 1, and a toe portion 5c which bears down on the foot lb of the rail 1, the toe portion 5c being flattened along its side which faces the rail.
  • the toe portion 5c of each clip 5 and the rail 1 are electrically isolated from one another by respective interposed nylon insulators 6.
  • the illustrated rail 1 is joined to another (not shown) by means of a pair of joint bars 7 located on either side of the rail webs lc at the rail joint and shaped so as to fit between the head la and the foot lb of the rail 1 and connected to one another by means of four bolts 8 (only one of which is shown) , secured by respective nuts 9, which pass through holes Id provided in the rail web lc and passageways 7a formed in the joint bars 7.
  • Epoxy resin insulators 10 are provided so as to electrically isolate the joint bars 7 from the rail webs lc and insulating bushes 11 are provided so as to electrically isolate the bolts 8 from the rail 1.
  • the scarfjoint assembly of Figure 2 is shown in less detail than that of Figure 1, but differs essentially only in that the ends of the rails 1 are shaped such that at the joint the angle between successive rails is 45° to the length of the rails 1.
  • FIG. 3A to 3C An embodiment of the present invention is shown in Figures 3A to 3C.
  • a rail joint assembly embodying the present invention is welded into place between two standard rails (not shown) .
  • the joint comprises first and second rail sections 101, 102, spanning the gap between two adjacent sleepers 2', each rail section 101, 102 resting on respective resilient rail pads 3' .
  • each rail section 101, 102 narrows such that, as shown in the drawing, the narrowed parts lOlf, I02f of each rail section 101, 102, can be laid so as to extend alongside one another in such a manner that together respective head parts 101a, 102a of each rail section present largely the appearance of a continuous rail head.
  • the rail section 101, 102 comprises a first part 1011 and 1021 at which the rail section is cut away on one side of the head 101a, 102a to a location approximately one third of the way across the head 101a, 102a; a second part 1012, 1022 at which the width of the head is tapered along one side of its length to approximately half of its original width for a short distance,* a third part 1013, 1023 at which the width of the head is maintained constant; and finally a fourth part 1014, 1024 at which the width of the head 101a, 102a tapers along its said one side again to approximately a third of its original width.
  • Webs 101c, 102c of the rail sections 101, 102 connecting the heads 101a, 102a and feet 101b, 102b thereof, are shaped so as to mirror the profile of the respective heads 101a, 102a.
  • the rail sections 101, 102 are separated from one another by an insulating member 110 (shown in more detail in Figures 5A and 5B) made of a flexible material, which is held between the two rail sections, 101, 102, so as to extend between the second parts 1012, 1022 and fourth parts 1014, 1024 of the rail sections 101, 102.
  • an insulating member 110 shown in more detail in Figures 5A and 5B
  • a flexible material which is held between the two rail sections, 101, 102, so as to extend between the second parts 1012, 1022 and fourth parts 1014, 1024 of the rail sections 101, 102.
  • the first part 1011, 1021 of one rail section 101, 102 abuts the fourth part 1014, 1024 of the other, and at this point the rail sections 101, 102 lie between a pair of anchoring devices 4', similar to those of Figures IA to IC, in which rail fastening clips 5', similar to those of Figures IA to IC, are mounted so as to bear on the feet 101b, 102b of each rail section 101, 102.
  • the rail fastening clips 5' may be standard components used elsewhere along the track and, unlike the prior art assembly of Figures IA to IC, need not be specially modified components used only at the rail joint. In particular, it is not necessary to flatten the side of the toe of each clip 5' adjacent to the rail web 101c, 102c.
  • the rail sections 101, 102 are held together by four bolts 8' (only one being shown) , which pass through respective holes 100, 110a formed in the webs 101c, 102c and insulating member 110 and are secured by respective nuts 9' .
  • respective bushes 18 shown in more detail in Figures 6A and 6B
  • the shank of each bolt 8' is furthermore surrounded by a compression stop 19 (shown in more detail in Figures 7A and 7B) .
  • a compression stop 19 may not always be necessary, however, and may be omitted.
  • the rail sections 101, 102 are identical to one another.
  • Figures 4A to 4D show the rail section 102 and in chain dotted line the outline of a length of standard rail which has been bent so as to assume a shape suitable for machining to achieve the desired rail section 102.
  • the Figures illustrate a section of BS113A rail, of overall length before bending of approximately one metre. Proceeding 80mm in from one end 102e of the rail length, the length of rail is bent such that the web of the rail becomes inclined to a first direction parallel to that of the web 102c in the part 102e by an angle a of approximately 7° for a distance 114mm measured parallel to the first direction. The rail section is then bent back so that the web again runs parallel to the first direction for a distance of 448mm, and is finally bent once again by the same angle a for the remainder of its length. The rail section is then ready for machining.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

Cette invention concerne un système de joint pour rails de chemins de fer, lequel système comprend une première et une seconde section de rail de chemin de fer (101, 102) possédant chacune une partie d'extrémité (101f, 102f) dont la forme permet de les ajuster l'une contre l'autre ou à proximité l'une de l'autre. Ce système comprend également un dispositif de joint (8') qui permet de relier la première et la seconde section (101, 102) de rails de chemin de fer lorsque ledit système est mis en oeuvre, les parties d'extrémité (101f, 102f) étant de forme allongée et se trouvant côte à côte dans une direction sensiblement parallèle à l'axe longitudinal de la première et de la seconde section de rail de chemin de fer (101, 102). Ce dispositif de connexion se compose d'au moins un élément de connexion (8') qui passe, tout en croisant ledit axe longitudinal, à travers des trous respectifs (100) pratiqués dans les parties d'extrémité susmentionnées (101f, 102f). L'espace qui sépare les parties d'extrémité (101f, 102f) des sections de rail de chemin de fer (101, 102) est de préférence rempli par un élément isolant allongé (110).
PCT/GB1997/000237 1996-01-26 1997-01-27 Joint pour rails WO1997027367A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU15508/97A AU1550897A (en) 1996-01-26 1997-01-27 Rail joint

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9601600A GB2309476A (en) 1996-01-26 1996-01-26 Longitudinally overlapping rail joint
GB9601600.1 1996-01-26

Publications (1)

Publication Number Publication Date
WO1997027367A1 true WO1997027367A1 (fr) 1997-07-31

Family

ID=10787626

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/000237 WO1997027367A1 (fr) 1996-01-26 1997-01-27 Joint pour rails

Country Status (3)

Country Link
AU (1) AU1550897A (fr)
GB (1) GB2309476A (fr)
WO (1) WO1997027367A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015010442A (ja) * 2013-07-02 2015-01-19 東日本旅客鉄道株式会社 レール継目部のレール締結構造

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0014318D0 (en) * 2000-06-12 2000-08-02 Balfour Beatty Plc Insulated rail joint

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR567229A (fr) * 1923-06-09 1924-02-27 Perfectionnements aux rails
GB505025A (en) * 1937-11-03 1939-05-03 John Herbert Condy Improved insulated rail joint
DE3420712A1 (de) * 1984-06-02 1985-12-05 Schreck-Mieves GmbH, 4600 Dortmund Isolierstoss
EP0268239A2 (fr) * 1986-11-18 1988-05-25 René Wettstein Joint de rail isolé ainsi qu'une éclisse pour cela
WO1995008028A1 (fr) * 1993-09-17 1995-03-23 Takashi Yamaguchi Raccord pour rails de chemin de fer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB260120A (en) * 1925-12-07 1926-10-28 Arnold Slade Improvements in and relating to railway rail joints
GB250867A (en) * 1925-12-15 1926-04-22 William Henry Holliday Improvements in or relating to railway and like rail joints
GB484240A (en) * 1937-01-29 1938-05-03 Herbert Francis Hayllar An improved joint for railway rails and the like
US3877641A (en) * 1973-10-01 1975-04-15 Joseph Rolland Plourde Rail fish joint and method of making the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR567229A (fr) * 1923-06-09 1924-02-27 Perfectionnements aux rails
GB505025A (en) * 1937-11-03 1939-05-03 John Herbert Condy Improved insulated rail joint
DE3420712A1 (de) * 1984-06-02 1985-12-05 Schreck-Mieves GmbH, 4600 Dortmund Isolierstoss
EP0268239A2 (fr) * 1986-11-18 1988-05-25 René Wettstein Joint de rail isolé ainsi qu'une éclisse pour cela
WO1995008028A1 (fr) * 1993-09-17 1995-03-23 Takashi Yamaguchi Raccord pour rails de chemin de fer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015010442A (ja) * 2013-07-02 2015-01-19 東日本旅客鉄道株式会社 レール継目部のレール締結構造

Also Published As

Publication number Publication date
GB2309476A (en) 1997-07-30
GB9601600D0 (en) 1996-03-27
AU1550897A (en) 1997-08-20

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