EP1918457A1 - Eisenbahnschwelle - Google Patents

Eisenbahnschwelle Download PDF

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Publication number
EP1918457A1
EP1918457A1 EP07105928A EP07105928A EP1918457A1 EP 1918457 A1 EP1918457 A1 EP 1918457A1 EP 07105928 A EP07105928 A EP 07105928A EP 07105928 A EP07105928 A EP 07105928A EP 1918457 A1 EP1918457 A1 EP 1918457A1
Authority
EP
European Patent Office
Prior art keywords
railway
railway sleeper
sleeper according
section bar
elongated box
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.)
Withdrawn
Application number
EP07105928A
Other languages
English (en)
French (fr)
Inventor
Mattia Baraldi
Fabrizio Pratesi
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.)
Sirti SpA
Original Assignee
Sirti SpA
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 Sirti SpA filed Critical Sirti SpA
Publication of EP1918457A1 publication Critical patent/EP1918457A1/de
Withdrawn legal-status Critical Current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
    • E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
    • E01B3/16—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from steel
    • E01B3/20—Sleeper construction for special purposes, e.g. with openings for ballast working

Definitions

  • the present invention refers to a railway sleeper.
  • the present invention refers to a hollow metal railway sleeper.
  • the function of the railway sleepers is to constitute a base on which the tracks are laid.
  • what is concerned is a part of the superstructure of the track which bears the rail and carries the weight of the train that runs above it to the foundation of the tracks and distributes it.
  • the role of the sleepers is to fix in place the rail attached above and thus ensure the respect of the gauge.
  • Wood, steel or reinforced concrete is used for the sleepers. Wooden sleepers are soaked with pit coal tar oil before use, to make them more resistant to detrimental weathering.
  • prestressed reinforced concrete sleepers are increasingly used in new works and superstructure works instead of wooden sleepers. The reason behind this is greater positional stability through greater weight (about 350 - 400 kg) and better usability.
  • diagnostic apparatuses are currently made in special places such as sheds in which the tracks are laid at special holes or canals from which agents may visually control the state of the lower parts of the trains (locomotives and coaches), to possibly intervene through maintenance operations.
  • the Applicant has made a hollow sleeper in which one or more housings are made with the aim of housing and protecting electric cables that cross the tracks and the aim of containing technological devices for the diagnostics of the trains that travel on the railway equipped with such hollow sleepers.
  • An aspect of the present invention concerns a railway sleeper characterised in that it comprises a section bar on which upper surface the tracks of the railway may be laid, an elongated box-like element, which is associated with such section bar, one or more housings being made on such elongated box-like element at pre-established positions capable of housing objects and/or electric components and/or technological devices for the diagnostics of the trains travelling on the railway.
  • the railway sleeper object of the present invention preferably comprises a section bar 2, preferably made of metal material, such as, for example, nodular cast iron or self-protected type steel, preferably having a double "T" or box-like, closed or different, section, but of analogous mechanical characteristics.
  • metal material such as, for example, nodular cast iron or self-protected type steel, preferably having a double "T" or box-like, closed or different, section, but of analogous mechanical characteristics.
  • Such configuration presents high bending and torsion resistance, because major stresses are concentrated in the tabs where there is the greatest part of the material and is therefore capable of adequately supporting the weight of the trains that travel on the tracks.
  • the tracks B are laid on the upper surface of such section bar, for example through the conventional binding means used to fix the sleepers to the tracks themselves achieved by means of plates and bolts.
  • a structure formed by a box-like elongated element 3 is associated with such section bar 2, preferably having the same length as the section bar itself.
  • the elongated box-like element is inserted inside the notch formed by a side of said double "T".
  • Such box-like element is preferably made of metal or of a metal alloy.
  • one or more housings 4 are made at pre-established positions capable of housing objects and/or electric components such as, for example, electric cables that cross the tracks and/or technological devices for the diagnostics of the trains that travel on the railway equipped with such types of hollow sleepers.
  • Such technological devices may be, for example, temperature sensors 5 such as those depicted in the accompanying figures, or in alternative, infrared sensors, laser sensors, TV cameras, etc...
  • Such sensors may allow for the correct take of all or part of the lower zone of the rolling stock R which crosses the section object of the survey allowing for the analysis of: undercase, axles, brakes, shoes, discs, wheels and axle boxes.
  • housings 4 are at least partially covered by a cover 41 capable of protecting against shocks and atmospheric agents the elements contained in the housings.
  • the sleepers according to the present invention may replace traditional sleepers in case there is a need to lead under the tracks electric or telephone cables with entrance and exit in the lateral part of the sleeper or cables having a lateral entrance and an exit in the central part of the sleeper.
  • the invention ensures a remarkable ease of installation compared to other sensor housing systems (ex., manufactured articles, holes, etc).
  • the sleeper object of the present invention simplifies all maintenance activities, meaning a remarkable potential for use in a railway sector characterised by high constraints in terms of actual access during installation, because of the particular accompanying conditions (need to suspend railway traffic, need for RFI-qualified personnel escorts, etc).
  • the sleeper allows for exponentially increasing the number of such diagnostic devices that may be installed on a same length of stretch, as the invention may be comparable to a normal railway sleeper, the pitch is equal to the distance between sleepers.
  • the diagnostic devices or, in other words, the sensors will have housing angles in relation to the substructure greater than 10° and lower than 85° and an angular field of a shot greater than 10° and lower than 120°.
  • the number of sensors is preferably greater or equal to one and less than four for every hemisection of the sleeper.
  • the sleeper may advantageously be equipped with special systems which protect against bad weather, dust and ice the operation of diagnostic devices such as, only by way of example, heaters, compressed air jets, closing and sensor protection systems, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Mechanical Operated Clutches (AREA)
EP07105928A 2006-10-26 2007-04-11 Eisenbahnschwelle Withdrawn EP1918457A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20062060 ITMI20062060A1 (it) 2006-10-26 2006-10-26 Traversina ferroviaria

Publications (1)

Publication Number Publication Date
EP1918457A1 true EP1918457A1 (de) 2008-05-07

Family

ID=38969434

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07105928A Withdrawn EP1918457A1 (de) 2006-10-26 2007-04-11 Eisenbahnschwelle

Country Status (2)

Country Link
EP (1) EP1918457A1 (de)
IT (1) ITMI20062060A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1017746C2 (nl) * 2001-03-30 2002-10-07 Wisselbouw Nederland B V Inrichting voor het ondersteunen van spoorstaven.
CH694532A5 (de) * 1993-05-07 2005-03-15 Schwihag Gmbh Querschwelle für Eisenbahn-Gleisanlagen.
WO2006007979A1 (de) * 2004-07-20 2006-01-26 Schwihag Ag Querschwelle mit verstellvorrichtung für weichenzungen
WO2006089655A1 (de) * 2005-02-24 2006-08-31 Bwg Gmbh & Co. Kg Geräteträgerschwelle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH694532A5 (de) * 1993-05-07 2005-03-15 Schwihag Gmbh Querschwelle für Eisenbahn-Gleisanlagen.
NL1017746C2 (nl) * 2001-03-30 2002-10-07 Wisselbouw Nederland B V Inrichting voor het ondersteunen van spoorstaven.
WO2006007979A1 (de) * 2004-07-20 2006-01-26 Schwihag Ag Querschwelle mit verstellvorrichtung für weichenzungen
WO2006089655A1 (de) * 2005-02-24 2006-08-31 Bwg Gmbh & Co. Kg Geräteträgerschwelle

Also Published As

Publication number Publication date
ITMI20062060A1 (it) 2008-04-27

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