EP1935748A1 - Dispositif de détection de pont de court-circuit - Google Patents

Dispositif de détection de pont de court-circuit Download PDF

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Publication number
EP1935748A1
EP1935748A1 EP07024452A EP07024452A EP1935748A1 EP 1935748 A1 EP1935748 A1 EP 1935748A1 EP 07024452 A EP07024452 A EP 07024452A EP 07024452 A EP07024452 A EP 07024452A EP 1935748 A1 EP1935748 A1 EP 1935748A1
Authority
EP
European Patent Office
Prior art keywords
short
rails
arm
detection device
circuit
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
EP07024452A
Other languages
German (de)
English (en)
Other versions
EP1935748B1 (fr
Inventor
Joannekes Fransiscus Carolus Adrianes De Beer
Lex Jozephus Maria Van Der Poel
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.)
Dual Inventive Holdings BV
Original Assignee
Dual Inventive BV
Dual Inventive Holdings 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 Dual Inventive BV, Dual Inventive Holdings BV filed Critical Dual Inventive BV
Publication of EP1935748A1 publication Critical patent/EP1935748A1/fr
Application granted granted Critical
Publication of EP1935748B1 publication Critical patent/EP1935748B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • B61L1/187—Use of alternating current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
    • B61L23/06—Control, warning or like safety means along the route or between vehicles or trains for warning men working on the route
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2421—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using coil springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/08—Short-circuiting members for bridging contacts in a counterpart
    • H01R31/085—Short circuiting bus-strips
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/26—Connections in which at least one of the connecting parts has projections which bite into or engage the other connecting part in order to improve the contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin

Definitions

  • the invention relates to a device for detecting a short-circuit bridge between or across the rails of a railway section, comprising a first arm, which can be brought into electrical contact with a first rail; a second arm, which can be brought into electrical contact with the other rail; an electrical power source, as well as detection means for detecting and monitoring, in use, the short-circuit resistance of the short-circuit bridge realised by the two arms and between the two rails.
  • the Dutch railway network is divided into several sections, also referred to as track sections.
  • the successive track sections are electrically insulated from each other.
  • track circuit determines by means of a so-called track circuit whether a train is present in the track section in question.
  • the track circuit forming part of the railway safety system consists of an AC voltage source connected to the rails on one side of the section and a track relay connected to rails on the other side of the section.
  • the track signal associated with the track section in question will change to red, indicating to oncoming trains that the railway track selection ahead of them is not clear.
  • the railway track safety system will automatically stop any trains that enter the track section yet.
  • This short-circuit bridge is realised by means of a so-called short-circuit lance as described in the introductory part of the main claim and as disclosed in, for example, Dutch patent publication No. 1000713 .
  • the known short-circuit lance comprises two arms which are each brought into electrical contact with one of the two rails.
  • the short-circuit realised by means of the short-circuit lance simulates the presence of a train, causing the track relay to drop out.
  • the railway safety system "thinks" that a train is present in the track section in question and thus bars trains from entering said section by changing all the signals of tracks leading towards said section to red.
  • the short-circuit lance described in said publication comprises two arms, which can be brought into electrical contact with each of the rails, and which furthermore comprises a power source and as well as detection means, which, in use, detect and monitor the short-circuit resistance of the short-circuit bridge realised by the two arms and between the two rails.
  • the short-circuit lance according to NL-1000713 must make a good electrical contact with the two rails, which means that the two arms must be capable of penetrating through rust and dirt that may be present on the sides of the rails.
  • the object of the invention is to provide a solution to the above problem, and according to the invention the short-circuit lance or device for detecting a short-circuit bridge between or across the rails of a railway section is characterised in that each arm is at least made up of two arm members extending parallel to each other, which arm members can each be brought into electrical contact with one and the same rail.
  • each arm is at least made up of two arm members extending parallel to each other, which arm members can each be brought into electrical contact with one and the same rail.
  • each arm member can telescope against spring force.
  • each arm member is provided with a contact head to be placed into abutment with a rail, the contact surface of which is provided with a material that has been applied by explosion welding. This ensures a good electrical contact between the arm sections and the rail.
  • the two arms are pivotally interconnected.
  • this makes it possible to realise a compact construction, which, in addition, is quite easy to handle during transport and further handling.
  • the length of the two arms at rest is greater than the width between the rails.
  • the detection device is according to the invention provided with a pressure surface near the pivot point, for example for a user's foot.
  • the two pivoting arms enable operating staff to clamp the detection device in question between the two rails by foot, which is done by placing a foot on the detection device at the pivot point and pressing it down.
  • the detection means are provided with wireless communication means for wirelessly transmitting information regarding (the status of) the short-circuit resistance of the short-circuit bridge that has been realised. In this way it is no longer necessary to visit the track section in question to check the status of the short-circuit resistance.
  • the device is according to the invention provided with at least one handle.
  • each arm is made up of at least three arm members, which can be brought into electrical contact with one and the same rail.
  • each arm member may furthermore be configured as a flexible member, in particular as a cable provided with a rail ground terminal. This makes it possible to fit and connect the device in a track section in a simpler and more flexible manner.
  • Figure 1 shows a railway 1 built up of successive track sections 1 -1 -1 0 -1 +1 etc.
  • the track which comprises several track sections, is built up of rails 2a-2b, which are fixed to sleepers 3.
  • the successive track sections are separated from each other by means of insulating connecting bridges 4 provided in one of the rails 2a-2b or, as shown in the figure, in both rails.
  • Each track section 1 -1 -1 0 -1 +1 is provided with a track circuit, by means of which the presence of a train in the section in question can be detected.
  • the track circuit of each track section is built up of an AC voltage source 5, which is connected to each rail 2a, 2b by means of connections 5a, 5b, respectively.
  • a dropout or track relay 6 is provided, which is likewise electrically connected to the two rails 2a, 2b of the section in question by means of connections 6a, 6b, respectively.
  • Figure 1b shows the situation in which a train 7 enters the track section 1 0 from the left.
  • the axles 7a of the train create a short-circuit between the two rails 2a-2b, causing current to flow from the AC voltage source 5, via the connection 5a, the rail 2a, the axles 7a and via the other rail 2b and the connection 5b back to the AC voltage source.
  • the track relay 6 causing it to drop out.
  • This situation is shown in figure 1 b.
  • Such short-circuiting of the track section 1 0 by a passing train 7 can also be simulated by a "simulation train", using a short-circuit lance, a prior art embodiment of which is shown in figure 2 .
  • the prior art short-circuit lance 10 is built up of a housing 10a, to which two arms 11-31 are connected, whose contact heads 17-37 can be brought into electrical contact with the respective rails 2a-2b.
  • the two arms 11-31 can be moved apart by means of a lever 10b so as to effect a good clamping engagement and thus a good electrical contact between the contact heads 17-37 and the two rails 2a-2b.
  • the short-circuit thus realised between the two rails 2a-2b can be detected or monitored by means of suitable detection means 15, in this embodiment in the form of a separate unit, which is connected to each contact head 17-37 by means of connections 15a and 15b, respectively.
  • the short-circuit lance 10 as shown in figure 2 has a number of drawbacks, the most important being the single contact between the two arms 11-31 and the rails 2a-2b. Apart from the fact that the electrical contact between the two arms 11-31 and the respective rails 2a-2b cannot be adequately realised and ensured at all times, the prior art short-circuit lance has another significant drawback in use.
  • the arms 11-31 Upon installation of the short-circuit lance 10 between the two rails 2a-2b, the arms 11-31 need to be moved apart by means of the lever 10b. Operating staff must to that end operate the lever 10b in a bent-over position in order to move the two arms 11-31 apart and into contact with the two rails 2a-2b. The user's bent-over position leads to a hazardous situation, since the person in question does not have a good view of the track section, which at that point is not protected and secured yet.
  • FIGS 3a and 3b and in particular 4a-4c show an improved embodiment of a short-circuit lance according to the invention. Identical parts are indicated by the same reference numerals in these figures, too.
  • the short-circuit lance 10 is built up of two arms 11-31, which are pivotally interconnected near the position indicated at 13.
  • the pivot axis 13 makes it possible to fold down the device 10 after use, so that the two arm members 11-31 will extend parallel to each other.
  • This construction makes the device easier to handle and transport, the latter for example by means of the handles 14a-14a' or the handle 14b or 14c as shown in figure 4a .
  • each arm 11-31 is built up of several (three in this embodiment) arm members 16a-16c and 36a-36c, respectively, which can each be individually brought into electrical contact with one of the two rails 2a and 2b, respectively, by means of contact heads 17a-17c and 37a-37c, respectively.
  • each arm 11-31 and the rails 2a-2b By realising electrical contact between each arm 11-31 and the rails 2a-2b at several positions, it can be ensured in a more adequate manner that the short-circuit will be maintained, thus obtaining an improved detection and monitoring of the short-circuit resistance that has been realised in this manner.
  • the reliability of the device obtained by realising an electrical contact at several positions is additionally ensured by the fact that the circuitry is internally separated from each other in several spaces formed by the various arm members 16a-16c, 36a-36c, respectively. Unintentional internal short-circuiting between the circuitry is not possible, whilst the cable work is furthermore fully insulated.
  • the arm members 16a-16c and 36a-36c, respectively, are telescopic and can be adjusted against the action of a return force, in this case spring force provided by the springs 19a-19c and 39a-39c, respectively. In this way the device 10, and in particular the arm members 16a-16 and 36a-36c, respectively, can be clamped between the two rails 2a-2b under pre-tension.
  • the arm members 16a-16 and 36a-36c, respectively, are to that end provided with projections 21a-21c and 41a-41c, respectively, which are slidably accommodated in slots 20a-20c and 40a-40c, respectively, formed in the housing 11b-31 b of the arms 11-31. In this way the maximum amount of travel of the arm members against the spring force of the springs 19a-19c and 39a-39c is limited.
  • each of the contact heads 17a-17c and 37a-37c, respectively has a contact surface 18a-18c, 38a-38c, respectively, to which a contact-enhancing material has been applied by explosion welding (also called "cladding").
  • Said electrical contact-enhancing material ensures a correct detection of the short-circuit resistance by the device.
  • the device 10 is furthermore provided with suitable means 15-35, which function as detection means for detecting and monitoring the short-circuit resistance realised by the arm members 16a-16 and 36a-36c, respectively, and the rails 2a-2b.
  • the multiple contacts between the rails prevent the connection between the arms 11-31 and the rails 2a-2b from being unintentionally broken.
  • the use of multipoint detection further leads to a more reliable device and thus a higher level of safety for the operators 100 in the protected track section.
  • the detection means 15-35 may optionally be provided with a GSM unit 35a, so that status information of the detected short-circuit resistance can be collected and be transmitted to a central operating unit or a responsible person via a wireless telecommunication link.
  • Said status information may inter alia comprise information about the position and identity of the detection device, but above all information concerning the state of the detection device, such as the current value of the measured short-circuit resistance.
  • the status information may also include the current condition of the battery that forms part of the detection device and indicate whether the measured short-circuit resistance reaches or has reached an undesirable, i.e. unsafe, value. In the latter case this might lead to the track signals undesirably changing to green without this being directly noticeable, so that the protected track section is no longer barred to regular trains rushing towards said track section.
  • current information regarding the status of the short-circuit resistance between the two rails 2a-2b may be retrieved by remote control, for example by means of an SMS message that is sent to the GSM unit 35a.
  • the detection means may be provided with remote-controlled switch (wireless or wired) for making or breaking the short-circuit between the rails 2a-2b.
  • remote-controlled switch wireless or wired
  • Figures 4a-4c show the installation steps of a short-circuit lance 10 according to the invention.
  • the pivot construction 13 makes the device 2 easy to handle and to transport in folded condition (see figure 4a ).
  • the arms 11-31 are pivoted apart upon installation of the short-circuit lance, moving the contact heads 17-37 into abutment with the rails 2a-2b.
  • the arm member 31 is provided with a contact plate 33, by means of which the maintenance worker 100 in question can move the device 10 down with his foot, effectively clamping it between the two rails 2a-2b.
  • the joint length of the arms 11 and 31 is greater than the width between the two rails 2a-2b.
  • the arm members 16a-16 and 36a-36c, respectively will telescope down against the spring force of the springs 19a-19c and 39a-39c, respectively, and thus be clamped between the two rails 2a-2b.
  • This installation method has two advantages: on the one hand a proper retainment of the arms 11-31 between the rails 2a-2b is realised, so that a good and permanent electrical contact between the arm members 16a-16 and 36a-36c, respectively, and the rails 2a-2b is maintained.
  • This latter aspect has a positive effect on the reliability and functionality of the short-circuit lance 10 according to the invention.
  • the arm members 16a-16 and 36a-36c, respectively can be telescoped down by foot, a safer working situation is created. Unlike the short-circuit lance shown in figure 1 , the person involved need not clamp the two arms 11-31 between the two rails 2a-2b in a bent-over position, using the lever 10b.
  • the person 100 in question can clamp the short-circuit lance 10 according to the invention between the rails 2a-2b by foot from a standing position, and will at all times retain a good view of the track section in which the work is to be carried out and which is not protected against oncoming trains yet at the moment of installing the short-circuit lance 10.
  • each member may furthermore be configured as a flexible member, in particular as a cable provided with a rail ground terminal. This enables a simpler and more flexible installation and connection of the device in a track section.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
EP20070024452 2006-12-18 2007-12-17 Dispositif de détection de pont de court-circuit Active EP1935748B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1033077A NL1033077C2 (nl) 2006-12-18 2006-12-18 Detectie-inrichting van een kortsluitingsbrug.

Publications (2)

Publication Number Publication Date
EP1935748A1 true EP1935748A1 (fr) 2008-06-25
EP1935748B1 EP1935748B1 (fr) 2012-12-05

Family

ID=38266703

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070024452 Active EP1935748B1 (fr) 2006-12-18 2007-12-17 Dispositif de détection de pont de court-circuit

Country Status (2)

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EP (1) EP1935748B1 (fr)
NL (2) NL1033077C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1036793C2 (nl) * 2009-03-31 2010-10-04 Dual Inventive B V Systeem voor het detecteren van een naderende trein in een sectie van een spoorbaan.
EP2962915A1 (fr) * 2014-07-03 2016-01-06 Thales Deutschland GmbH Dispositif de surveillance et dispositif de détection comprenant un dispositif de surveillance
EP3201062A4 (fr) * 2014-10-03 2018-05-30 Harsco Technologies LLC Dispositif de dérivation monté sur rail à sécurité intégrée

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1036399C2 (nl) 2009-01-09 2010-07-13 Dual Inventive B V Detectie-inrichting van een kortsluitingsbrug.
EP2990296B1 (fr) 2014-08-27 2023-01-25 Dual Inventive Holding B.V. Système de mise hors service d'une section de rail de chemin de fer, ainsi que des moyens d'interface pour la connexion d'un tel système à un système de sécurité de train de la voie ferrée

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE405128C (de) * 1923-05-12 1924-10-30 Siemens Schuckertwerke G M B H Kurzschlussvorrichtung fuer Stromschienen elektrischer Bahnen
US2275367A (en) * 1940-12-05 1942-03-03 James Robert Sloan Electric rail connector
NL1000713C2 (nl) 1995-06-30 1996-12-31 Railbedrijven B V Zelfdetecterende kortsluitbrug voor een beveiligde spoorbaansectie.
NL1001121C2 (nl) 1995-09-01 1997-03-04 Railbedrijven B V Contactkop voor het maken van meervoudig elektrisch contact met een geleidend voorwerp en middelen voorzien van een dergelijke contactkop.
GB2391724A (en) * 2002-08-06 2004-02-11 Hewlett Packard Development Co Flexible, ribbon connector having a housing, a plurality of signal conductors, and a plurality of insulators located about a central current return connector
US20060281359A1 (en) * 2004-11-03 2006-12-14 Panduit Corp. Method and apparatus for reliable network cable connectivity

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
US6102340A (en) * 1997-02-07 2000-08-15 Ge-Harris Railway Electronics, Llc Broken rail detection system and method
US6845953B2 (en) * 2002-10-10 2005-01-25 Quantum Engineering, Inc. Method and system for checking track integrity
US20080105791A1 (en) * 2004-12-13 2008-05-08 Karg Kenneth A Broken Rail Detection System

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE405128C (de) * 1923-05-12 1924-10-30 Siemens Schuckertwerke G M B H Kurzschlussvorrichtung fuer Stromschienen elektrischer Bahnen
US2275367A (en) * 1940-12-05 1942-03-03 James Robert Sloan Electric rail connector
NL1000713C2 (nl) 1995-06-30 1996-12-31 Railbedrijven B V Zelfdetecterende kortsluitbrug voor een beveiligde spoorbaansectie.
WO1997002169A1 (fr) * 1995-06-30 1997-01-23 Railpro B.V. Ligne court-circuit auto-signalee pour segment ferroviaire protege
NL1001121C2 (nl) 1995-09-01 1997-03-04 Railbedrijven B V Contactkop voor het maken van meervoudig elektrisch contact met een geleidend voorwerp en middelen voorzien van een dergelijke contactkop.
WO1997009193A1 (fr) * 1995-09-01 1997-03-13 Railpro B.V. Tete de contact pour former un contact electrique multiple avec un article conducteur, et moyen dote de ladite tete de contact
GB2391724A (en) * 2002-08-06 2004-02-11 Hewlett Packard Development Co Flexible, ribbon connector having a housing, a plurality of signal conductors, and a plurality of insulators located about a central current return connector
US20060281359A1 (en) * 2004-11-03 2006-12-14 Panduit Corp. Method and apparatus for reliable network cable connectivity

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1036793C2 (nl) * 2009-03-31 2010-10-04 Dual Inventive B V Systeem voor het detecteren van een naderende trein in een sectie van een spoorbaan.
EP2236386A1 (fr) * 2009-03-31 2010-10-06 Dual Inventive B.V. Système pour détecter un train à l'approche dans une section de voie
EP2962915A1 (fr) * 2014-07-03 2016-01-06 Thales Deutschland GmbH Dispositif de surveillance et dispositif de détection comprenant un dispositif de surveillance
WO2016000868A1 (fr) * 2014-07-03 2016-01-07 Thales Deutschland Gmbh Dispositif de surveillance et dispositif de détection comprenant un dispositif de surveillance
EP3201062A4 (fr) * 2014-10-03 2018-05-30 Harsco Technologies LLC Dispositif de dérivation monté sur rail à sécurité intégrée
AU2021202756B2 (en) * 2014-10-03 2022-07-14 Harsco Technologies LLC Failsafe rail mounted shunt device

Also Published As

Publication number Publication date
NL1033077C2 (nl) 2008-06-19
NL1033581C2 (nl) 2008-06-19
EP1935748B1 (fr) 2012-12-05

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