US3904112A - Railbed - Google Patents

Railbed Download PDF

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Publication number
US3904112A
US3904112A US468103A US46810374A US3904112A US 3904112 A US3904112 A US 3904112A US 468103 A US468103 A US 468103A US 46810374 A US46810374 A US 46810374A US 3904112 A US3904112 A US 3904112A
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US
United States
Prior art keywords
insert
railbed
rail
sleeper
sleeper member
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
US468103A
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English (en)
Inventor
Stig Helge Gunnar Thim
Lennart A Borup
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Abetong AB
Original Assignee
Abetong AB
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 Abetong AB filed Critical Abetong AB
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Publication of US3904112A publication Critical patent/US3904112A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
    • E01B3/28—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
    • E01B3/28—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone
    • E01B3/42—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone combined with inserts of wood or other material
    • 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
    • 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
    • E01B9/64—Rail fastenings gripping or encircling the sleeper
    • 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

Definitions

  • a railbed Comprises a Supporting element in the form 58 Field of Search 238/283, 281, 282, 83, of a Sleeper, p or the like of a cast Compound such 238/84, 29, 30, 2, 91, 264, 265, as concrete and an insert preferably of electrically in- 23 /270 2 7 304 sulating material which is grouted or embedded therein.
  • This invention relates to railbeds of the kind comprising a supporting element in the form of a sleeper, plate or the like of a hardened cast compound such as concrete.
  • a modern track built up in accordance with the classical track construction pattern consists of three main parts: sleepers or ties, rails and a fastening or fastening system which serves to unite these into a unit, ie the track.
  • the fastening must be able to absorb and distribute the load exerted on a track while at the same time it must give the rail an elastic attachment and to some extent dampen the oscillations caused by the traffic.
  • a modern track is often divided into sections which are electrically insulated in their ends and form socalled track lines by means of which signals of different kinds are controlled. This, in turn, necessitates the two rails being electrically insulated from each other.
  • a suitable and common way of achieving this is to build in electrical insulation in the fastening. For this purpose, use is frequently made of a loose elastic insert in the form of a separate element manufactured of a material with sufficient electrical insulating properties.
  • the construction can make it necessary to provide more or less continuous elastic inserts for the support and fixing of the rails and with the same demands on electrical insulation, etc., as specified above for the classical track construction.
  • the surface usually obtained does not provide the most ideal contact surface for such an elastic insert. In such cases, irregularities in the surface which reduce the service life of the insert must always be allowed for.
  • a modern fastening often consists of many separate parts, which necessitates a considerable amount of manual work when a track is being assembled or disassembled. This is a decided disadvantage, particularly as a large number of included parts makes mechanization of the work difficult.
  • Each individual component part of a fastening system moreover, with its deviations from the correct dimensions, contributes towards the inaccuracy of a vital final dimension. The greater the number of parts included in the fastening system is, the more difficult it becomes to achieve the wanted dimensional accuracy.
  • SUMMARY OF THE INVENTION can be so structured that, at the same time, it accomplishes sealing of the mould and a support for parts embedded in the element.
  • the side of the insert facing towards the concrete can be so configured as to be anchored to the desired extent in the concrete in the course of casting and be held thereto upon removal from themould.
  • the element On the side facing towards the rail the element can additionally be so designed that when the complete track is assembled it satisfies the abovementioned requirement which from the standpoint of track construction can be demanded of an elastic insert.
  • the elastic insert can be accurately fixed in the mould, which ensures a final product with substantially improved dimensional accuracy. Also when other types of supporting elements are involved, grouting or embedding of an elastic insert can easily be carried out.
  • the grouted or embedded insert can, if desired, be so structured that it contributes towards ensuring good and proper positioning of embedding parts for fastening. Effective sealing between the embedding parts concerned and the concrete mould can then easily be obtained.
  • the invention also allows modern factory-scale manufacturing of a railbed with the greater dimensional accuracy then obtainable, at the same time as the work on tracks is simplified in that several manual work operations can be dispensed with. Moreover, remaining track work can more easily be mechanized. Similar advantages-.are also obtained during subsequent track work, for instance stress equalization, rail replacements, etc.
  • the embedded elastic insert can be so designed or combined with other elements that it partly or wholly ensures retention in place of the rail.
  • the insert can be provided with anchorages in the form of pins, ribs, strips or the like. These, in turn, can be so configured that in addition to the anchoring effect they also give the plate wanted variable elastic properties.
  • FIG. 1 shows a part of a mould for manufacturing a railbed according to the invention provided with an embedded elastic insert.
  • FIG. 2 is a section along line 22 in FIG. 1.
  • FIG. 3 shows an example of a track construction which incorporates a railbed according to the invention.
  • FIG. 4 finally, shows a part of a track construction in which the elastic insert contributes towards retention of the rail.
  • the plate 5 In order for the plate 5 also to contribute towards good fixing of the embedding parts it is provided on two sides with an elongation 5a, so that it connects in a suitable manner the corresponding embedding part 3 and helps to improve the dimensional accuracy.
  • the plate is given such a shape that it fits well into the mould 2 and also effectively seals the recesses or core-outs in the mould.
  • Shown at section 22 is a method of affording a seal against a mould surface 2 by means of a suitable formed strip 512. By means of effective sealing, cement sludge can be prevented from being displaced out of the concrete form during castmg.
  • the plate in the example shown has been provided with four small anchoring hooks 5c, so dimensioned that they easily loosen from their position in the mould when the finished concrete sleeper is being removed from the mould.
  • the plate 5 embedded in the sleeper must nevertheless be sufficiently anchored and fixed in the sleeper 1.
  • the plate has been provided with a plurality of anchoring pins. The holes in the concrete formed by these pins can subsequently serve as guides and fixings for a replacement plate if, in the finished track, it is found necessary to change the embedded plate on account of, for example, mechanical wear.
  • FIG. 3 Shown in FIG. 3 is a track construction comprising a rail 8 carried on a railbed.
  • the bed consists of a concrete sleeper 1, embedded in which is an elastic plate 5, provided with upwarddirected side edges so that it encases the foot part of the rail.
  • the plate Sis anchored in the concrete by means of longitudinal strips 5e.
  • the rail is retained on the bed by means of a conventional spring 9. Shown in FIG. 3 also is part of a wheel 10 carried by the rail 8.
  • FIG. 4 illustrates a part of a track construction with a railbed according to the invention, in which an elastic plate 5 embedded in a sleeper 1 has been provided with a hook-shaped projection 5d, which partly encase the foot part of the rail, so that the elastic plate contributes towards retention of the rail.
  • the retaining effect is strenthened by a spring 9 shaped correspondingly to the hook-shaped projection 5d.
  • an elongated sleeper member formed of hardened cast concrete and adapted to serve as a rail supporting element
  • anchoring means attached to the insert and extending into the sleeper member for securely fastening the insert thereto in a predetermined position.
  • a railbed according to claim 1, wherein the insert consists of a plate of electrically insulating material.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Railway Tracks (AREA)
US468103A 1973-05-11 1974-05-08 Railbed Expired - Lifetime US3904112A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7306727A SE372787B (ru) 1973-05-11 1973-05-11
GB4879074A GB1472765A (en) 1973-05-11 1974-11-11 Railway tracks

Publications (1)

Publication Number Publication Date
US3904112A true US3904112A (en) 1975-09-09

Family

ID=26266334

Family Applications (1)

Application Number Title Priority Date Filing Date
US468103A Expired - Lifetime US3904112A (en) 1973-05-11 1974-05-08 Railbed

Country Status (7)

Country Link
US (1) US3904112A (ru)
AU (1) AU6876974A (ru)
CA (1) CA1012517A (ru)
DE (1) DE2422824C2 (ru)
GB (1) GB1472765A (ru)
SE (1) SE372787B (ru)
ZA (1) ZA742836B (ru)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280657A (en) * 1977-05-10 1981-07-28 Ramer James L Concrete railroad track
US4923118A (en) * 1989-02-21 1990-05-08 Armand Goossens Anti-vibration support system for railroads
US4925094A (en) * 1987-08-06 1990-05-15 Costain Concrete Company Limited Concrete railroad ties
US4971247A (en) * 1987-10-19 1990-11-20 Pandrol Limited Pad for placing under a railway rail and a rail-and-fastening assembly including the pad
US5203502A (en) * 1989-06-09 1993-04-20 Mckay Australia Limited Ribbed elastomeric rail pad
US5405081A (en) * 1994-02-24 1995-04-11 Burlington Northern Railroad Company Anti-abrasion rail seat system
US20040232254A1 (en) * 2002-07-25 2004-11-25 Martin Kowalski Concrete railroad tie with guide plates for the rail base
US20070034705A1 (en) * 2005-04-05 2007-02-15 Metroshield, Llc Insulated rail for electric transit systems and method of making same
US20070290061A1 (en) * 2006-06-16 2007-12-20 Ryan Michael Sears Rubber laminate and composites including the laminate
RU2506365C2 (ru) * 2008-04-21 2014-02-10 МАКС БОГЛ БАУУНТЕРНЕМУНГ ГМБХ унд КО. КГ Твердое железнодорожное полотно с непрерывным основанием
US20140042235A1 (en) * 2008-02-21 2014-02-13 Edilson Sedra B.V. Method for manufacturing a resilient rail support block assembly

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL160351C (nl) * 1976-02-25 1979-10-15 Nl Spoorwegen Nv Werkwijze voor het vervaardigen van een ballastloos spoor.
FR2674171A1 (fr) * 1991-01-18 1992-09-25 Wehner Hilmar Procede de fabrication d'elements moules en beton, moule pour la mise en óoeuvre de ce procede et produits obtenus.
DE4244963C2 (de) * 1992-04-16 2000-06-08 Butzbacher Weichenbau Gmbh Schienenanordnung mit Ausgleich des Spannungsverlaufes in der Zwischenlage bzw. Rippenplatte
CN103624873B (zh) * 2013-12-16 2015-07-29 华东交通大学 一种能固定与定位的轨枕端头隔离块

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1151891A (en) * 1915-02-06 1915-08-31 Thomas Bowman Railway-tie plate.
US3369753A (en) * 2013-12-11 1968-02-20 Swedish Rail System Ab Srs Pads for supporting rails
US3544006A (en) * 1969-01-22 1970-12-01 Koppers Co Inc Nonmetallic tie place
US3598312A (en) * 1968-12-16 1971-08-10 Portec Inc Synthetic crosstie
US3662952A (en) * 1970-10-09 1972-05-16 Trw Inc Adjustable rail fastener design with tapered key and channel members

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT258336B (de) * 1965-04-12 1967-11-27 Friedrich Ing Ledersberger Zwischen Schienenfuß und Unterlagsplatte einzufügende, aus Kunststoff bestehende Zwischenlage
DE2006071A1 (ru) * 1970-02-11 1971-08-12
DE2102306A1 (de) * 1971-01-19 1972-08-03 Lechler Chemie Gmbh, 7000 Stuttgart Elastische Befestigung von Gleisschienen auf einem festen Unterbau

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1151891A (en) * 1915-02-06 1915-08-31 Thomas Bowman Railway-tie plate.
US3598312A (en) * 1968-12-16 1971-08-10 Portec Inc Synthetic crosstie
US3544006A (en) * 1969-01-22 1970-12-01 Koppers Co Inc Nonmetallic tie place
US3662952A (en) * 1970-10-09 1972-05-16 Trw Inc Adjustable rail fastener design with tapered key and channel members
US3369753A (en) * 2013-12-11 1968-02-20 Swedish Rail System Ab Srs Pads for supporting rails

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280657A (en) * 1977-05-10 1981-07-28 Ramer James L Concrete railroad track
US4925094A (en) * 1987-08-06 1990-05-15 Costain Concrete Company Limited Concrete railroad ties
US4971247A (en) * 1987-10-19 1990-11-20 Pandrol Limited Pad for placing under a railway rail and a rail-and-fastening assembly including the pad
US4923118A (en) * 1989-02-21 1990-05-08 Armand Goossens Anti-vibration support system for railroads
US5203502A (en) * 1989-06-09 1993-04-20 Mckay Australia Limited Ribbed elastomeric rail pad
US5405081A (en) * 1994-02-24 1995-04-11 Burlington Northern Railroad Company Anti-abrasion rail seat system
US20040232254A1 (en) * 2002-07-25 2004-11-25 Martin Kowalski Concrete railroad tie with guide plates for the rail base
US7156319B2 (en) * 2002-07-25 2007-01-02 Pfleiderer Infrastruktechnik Gmbh & Co. Kg Concrete railroad tie with guide plates for the rail base
US20070034705A1 (en) * 2005-04-05 2007-02-15 Metroshield, Llc Insulated rail for electric transit systems and method of making same
US7484669B2 (en) 2005-04-05 2009-02-03 Metroshield Llc Insulated rail for electric transit systems and method of making same
US20070290061A1 (en) * 2006-06-16 2007-12-20 Ryan Michael Sears Rubber laminate and composites including the laminate
US7556209B2 (en) 2006-06-16 2009-07-07 Ryan Michael Sears Rubber laminate and composites including the laminate
US20140042235A1 (en) * 2008-02-21 2014-02-13 Edilson Sedra B.V. Method for manufacturing a resilient rail support block assembly
US8893982B2 (en) * 2008-02-21 2014-11-25 Edilon)(Sedra B.V. Method for manufacturing a resilient rail support block assembly
RU2506365C2 (ru) * 2008-04-21 2014-02-10 МАКС БОГЛ БАУУНТЕРНЕМУНГ ГМБХ унд КО. КГ Твердое железнодорожное полотно с непрерывным основанием

Also Published As

Publication number Publication date
DE2422824C2 (de) 1983-05-05
SE372787B (ru) 1975-01-13
ZA742836B (en) 1975-05-28
CA1012517A (en) 1977-06-21
GB1472765A (en) 1977-05-04
AU6876974A (en) 1975-11-13
DE2422824A1 (de) 1974-11-28

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