EP2995719A1 - Turnout slide support with improved thermal contact - Google Patents

Turnout slide support with improved thermal contact Download PDF

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Publication number
EP2995719A1
EP2995719A1 EP15183069.2A EP15183069A EP2995719A1 EP 2995719 A1 EP2995719 A1 EP 2995719A1 EP 15183069 A EP15183069 A EP 15183069A EP 2995719 A1 EP2995719 A1 EP 2995719A1
Authority
EP
European Patent Office
Prior art keywords
turnout
rail
conducting material
component
lead
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Withdrawn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
EP15183069.2A
Other languages
German (de)
English (en)
French (fr)
Inventor
Rob Rutjes
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.)
Volkerwessels Intellectuele Eigendom BV
Original Assignee
VolkerRail Nederland BV
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 VolkerRail Nederland BV filed Critical VolkerRail Nederland BV
Publication of EP2995719A1 publication Critical patent/EP2995719A1/en
Withdrawn legal-status Critical Current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
    • E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B7/00—Switches; Crossings
    • E01B7/24—Heating of switches

Definitions

  • the invention is aimed at preventing that the good operation of a railway turnout (also called switch), provided with a turnout heating (also called switch heating), is blocked by snow and ice.
  • a railway turnout also called switch
  • a turnout heating also called switch heating
  • the prior art shows many examples of protecting a turnout against snow and ice by heating, viz. e.g. EP1262597 , US-A-5004190 , WO2010142720 , EP2677079 , DE4325002 and DE19502125 .
  • the invention is directed to the improvement of the performance of a switch heating, without additional power consumption, which is applicable to new construction of turnouts (new) and above all is suitable for the improvement of existing, already in the railway installed systems (retrofit) and is easily applicable to existing, already installed systems in the track without the need to replace components, and without the need for long-term decommissioning of the track.
  • a good heat conductive material preferably initially in form free or pasty or gel-like state, is applied against and / or between two switch components, preferably to fill an empty space between the one switch component and a to it connected other switch component, preferably substantially completely, in order to get a good heat conducting intimate contact between these two components.
  • the one component for example, stock rail (also called stop rail) or closure rail (also called rail tongue) is directly heated by the switch heating, for example, the switch heating is attached thereto and / or the other component, for example, slide chair plate (in other words slide support or slide base plate, providing sliding support to the moving closure rail that is resting onto this chair plate), is devoid of direct heating by the switch heating.
  • the invention is on the one hand directed to avoid or remove an air gap by filling it with the heat-conductive material, on the other hand directed to enlarge the contact surface, for as good as possible contact heating.
  • the invention is based on the recognition that, by ensuring a good heat conduction, or large contact area, a switch component can indirectly sufficient be heated by the switch heating by allowing the heat of the one switch component to flow via the good thermal conductive material to the other component.
  • heat-conducting material examples include metal, preferably at low temperature melting such as lead, tin, zinc, aluminum, copper (or alloys of these metals), heat-conductive paste or adhesive, which preferably are applied in form the free state such as molten and then solidify or cure.
  • metal preferably at low temperature melting such as lead, tin, zinc, aluminum, copper (or alloys of these metals), heat-conductive paste or adhesive, which preferably are applied in form the free state such as molten and then solidify or cure.
  • the lead, etc. is applied after the relevant two switch components are mounted permanently and without complete or partly disassembly of these two switch components.
  • the lead, etc. is applied without prior dismantling.
  • the material for example, when it does not flow away automatically, e.g. in case of a gel or paste, can be applied at the desired location before or during the assembly of the two switch components.
  • the state of the art mentions the use of lead, aluminum, copper, heat-conductive paste or adhesive in order to improve the transfer of heat from the heating element to the directly by the heating element to be heated switch component.
  • the prior art is silent however, about the indirect heating of the one switch component by the other switch component in case of a with switch heating provided switch.
  • the state of the art is silent about a solution that is applicable to already in the track installed switches equipped with heating.
  • the lead, etc. is according to the prior art applied before or during the mounting of the parts to each other. Applying tin or zinc as the heat conductive material is not cited by the state of the art.
  • the stop rail or tongue rail is below the rail head provided with an along its length extending heating element, for example, electric or fire tube, and is heated directly by this heating element;
  • the heating element at the stop rail is located at the to the rail tongue facing side or at the other side;
  • the switch component of which the slide chair plate is an integral part engages over the rail foot of the stop rail to keep the latter in place;
  • the switch component of which the slide chair plate is an integral part is devoid of a heating element, in other words it lacks direct switch heating;
  • the heat-conducting material is applied in the or an air gap between the rail foot and the part of the switch component to be heated indirectly, which overlaps with the rail foot, for example, an air gap under the rail foot, the rail foot at the side of or above the rail foot.
  • both these components are made of metal, such as steel and / or are able to melt snow and ice.
  • Fig. 1-4 all show a schematic end view with the components shown at a distance from each other while they bear against each other in practice.
  • the slide chair plate of Fig. 1 is also called German system (rail type UIC60), that of Fig. 2 is also called Dutch system (rail type UIC54).
  • the invention is applicable to all types of slide chair and rail.
  • the slide chair extends below the rail foot and across its sliding surface the tongue rail slides (see the in the head of the rail tongue shown arrow).
  • Fig. 1 engaging over the rail foot of the stop rail is the nose of the slide chair and, by defects in shape, surface roughness, etc. this nose has no perfect connection with the rail foot, so that the heat-conducting contact surface between the nose and the rail foot is small.
  • Lead 10 is molded against the nose of the slide chair and thereby penetrated into these air gaps. Heat flows from the heating element through the stop rail to the lead 10 and further on to the slide chair so that the switch tongue does not with his foot freezes to the slide chair, and on the sliding surface lying snow and ice are melted. Also in the air gap 11 to the side of the rail foot and in the air gap 12 under the rail foot, one can pour lead to improve the heat transfer of the stop rail to the slide chair.
  • the lead 10 is molded against the to the rail tongue facing nose of the foot of the stop rail, and thereby flowed slightly below the rail foot into the air gap between the rail foot and the slide chair.
  • the lead bead (thus the lead which aside against the rail foot and on top of the sliding support has solidified), and also the lead in the air gap contribute to the transfer of contact heat from the stop rail to the slide face of the sliding support.
  • the lead has flown everywhere under the rail foot, for example, by also pouring from the other side of the rail foot such that also there a lead bead 14 is created which also contributes to a better heat transfer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Railway Tracks (AREA)
EP15183069.2A 2014-08-28 2015-08-28 Turnout slide support with improved thermal contact Withdrawn EP2995719A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2013380 2014-08-28

Publications (1)

Publication Number Publication Date
EP2995719A1 true EP2995719A1 (en) 2016-03-16

Family

ID=56921352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15183069.2A Withdrawn EP2995719A1 (en) 2014-08-28 2015-08-28 Turnout slide support with improved thermal contact

Country Status (2)

Country Link
EP (1) EP2995719A1 (nl)
NL (1) NL2015359B1 (nl)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5004190A (en) 1987-11-06 1991-04-02 Bylin Heating Systems, Inc. Rail heating apparatus
DE4325002A1 (de) 1993-07-26 1995-02-02 Butzbacher Weichenbau Gmbh Anordnung zum Erwärmen von Gleisabschnitten
DE19502125A1 (de) 1995-01-24 1996-08-08 Butzbacher Weichenbau Gmbh Heizelementanordnung
WO1998006240A1 (en) * 1996-08-05 1998-02-12 Fastrax Industries, Inc. Improved railroad track switch heater
EP1262597A2 (en) 2001-06-01 2002-12-04 Holland Railconsult B.V. Method and system for heating of rail and railelement for use therewith
CN101629402A (zh) * 2009-08-07 2010-01-20 孙健 铁路道岔快速融雪装置
WO2010142720A1 (de) 2009-06-11 2010-12-16 Balfour Beatty Plc Anordnung zur beheizung von schienenweichen
EP2677079A1 (en) 2012-06-20 2013-12-25 TERMORAD S.C. Zaklad Termoelektryczny H. Komosa, K. Komosa A railroad switch and a method of melting snow and ice in railroad switches

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5004190A (en) 1987-11-06 1991-04-02 Bylin Heating Systems, Inc. Rail heating apparatus
DE4325002A1 (de) 1993-07-26 1995-02-02 Butzbacher Weichenbau Gmbh Anordnung zum Erwärmen von Gleisabschnitten
DE19502125A1 (de) 1995-01-24 1996-08-08 Butzbacher Weichenbau Gmbh Heizelementanordnung
WO1998006240A1 (en) * 1996-08-05 1998-02-12 Fastrax Industries, Inc. Improved railroad track switch heater
EP1262597A2 (en) 2001-06-01 2002-12-04 Holland Railconsult B.V. Method and system for heating of rail and railelement for use therewith
WO2010142720A1 (de) 2009-06-11 2010-12-16 Balfour Beatty Plc Anordnung zur beheizung von schienenweichen
CN101629402A (zh) * 2009-08-07 2010-01-20 孙健 铁路道岔快速融雪装置
EP2677079A1 (en) 2012-06-20 2013-12-25 TERMORAD S.C. Zaklad Termoelektryczny H. Komosa, K. Komosa A railroad switch and a method of melting snow and ice in railroad switches

Also Published As

Publication number Publication date
NL2015359A (nl) 2016-07-12
NL2015359B1 (nl) 2017-07-21

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