EP1000833A1 - Dispositif de détection de rails cassés et procédé de fabrication d'un tel dispositif - Google Patents

Dispositif de détection de rails cassés et procédé de fabrication d'un tel dispositif Download PDF

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Publication number
EP1000833A1
EP1000833A1 EP99440301A EP99440301A EP1000833A1 EP 1000833 A1 EP1000833 A1 EP 1000833A1 EP 99440301 A EP99440301 A EP 99440301A EP 99440301 A EP99440301 A EP 99440301A EP 1000833 A1 EP1000833 A1 EP 1000833A1
Authority
EP
European Patent Office
Prior art keywords
rail
optical fiber
head
sch
rail head
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Withdrawn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
EP99440301A
Other languages
German (de)
English (en)
Inventor
Klaus Dr. Mindel
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.)
Alcatel CIT SA
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel SA
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 Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP1000833A1 publication Critical patent/EP1000833A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B61L23/04—Control, warning or like safety means along the route or between vehicles or trains for monitoring the mechanical state of the route
    • B61L23/042—Track changes detection
    • B61L23/044—Broken rails

Definitions

  • the invention relates to an arrangement for detecting rail breaks according to the preamble of claim 1 and a method of manufacture an arrangement for detecting rail breaks according to claim 7.
  • EP-A1-514 702 describes a method for detecting broken rails known, in which the transmitter arranged at regular intervals acoustic Couple signals into the rails. Are between the transmitters Receiver, the acoustic signals propagating through the rails record and evaluate. If there is a rail break, it will acoustic signal distorted by the break point. Recognize the recipients this falsification and trigger a suitable alarm action.
  • This Known method has the main advantage that it is saboteurs difficult to overcome. The disadvantage, however, is that the distance should not exceed 1200 meters between the transmitters. Due to the Many of the transmitters and receivers required are very expensive high. In addition, the transmitters and receivers have to be removed and removed during track construction work can be reassembled after completion of the work. That too high costs are incurred.
  • the arrangement should also Impact track construction work as little as possible.
  • the task is characterized by the characteristic features of Claim 1 solved.
  • the optical fiber is not only interrupted when the rail breaks completely, but also if only the rail head tears or partially breaks out.
  • the arrangement according to the invention also provides effective protection against Sabotage acts, since it is not possible to cut the rail without doing so also to cut the optical fiber.
  • the evaluation device needs only to monitor whether a light beam coupled into the fiber is interrupted or not. A complex signal evaluation is not required. Because it is based on the correct transmission of certain waveforms does not arrive, the light transmitter and the evaluation device can go very far be apart; Distances are on the order of 100 km easily possible. Therefore, if you look at the optical fiber itself very few additional facilities along the route required.
  • the optical fiber is either on the side flank or on the Bottom of the rail head attached. When mounting on the The underside of the rail head is particularly good against the optical fiber Thrown gravel stones protected.
  • the optical fiber is on the side of the rail head attached, not from the flange of a wheel rolling over the rail can be touched. This will damage the flanges of Vehicle wheels prevented.
  • the rail head has a longitudinal groove for receiving the optical fiber.
  • the one in this groove In this way, inserted optical fiber is particularly well protected.
  • This Variant is particularly useful if track construction machines are used be, the gripper arms for lifting the rail under the rail head to grab. Damage to the optical fiber by the gripper arms is in excluded from this situation.
  • Fig. 1 shows a cross section of a railroad track SCH, which consists of a Rail foot FOOT, a rail web STEG and a rail head KOPF consists.
  • the wheel RAD of a rail vehicle is indicated above it, which with its tread on the top of the rail head HEAD lies on.
  • the optical fiber OF On the underside of the rail head KOPF is an optical fiber OF attached. As can be seen in the enlarged section, the optical fiber just before the point where the rail head KOPF in the Rail bridge STEG merges.
  • the optical fiber OF is preferably am Rail head KOPF attached with the help of an adhesive KLE.
  • the KLE adhesive should be such that the optical fiber OF is sufficiently counter Is protected from environmental influences.
  • the Rail head also break the adhesive and the embedded optical Cut fiber OF.
  • optical fibers can be used since, as already mentioned above, no claims to one qualitative preservation of the fed light signal. At very Long distances to be monitored should at best be taken into account, optical To use fibers with low optical attenuation, so on use optical regenerators can be dispensed with.
  • the optical fiber OF is in that shown in FIG. 1 Embodiment on the side of the rail head HEAD, not from Wheel flange of the wheel RAD can be touched. This will make one Damage from the wheel flange SK of the wheel RAD from the outset locked out. In principle, however, is of course an attachment to the opposite side also possible. This even makes sense if one second optical fiber to be attached to the rail head KOPF. This the second optical fiber is then preferably symmetrical to that in FIG. 1 shown optical fiber OF on the other side of the rail head HEAD attached. Leave with the help of a second optical fiber attached in this way there are also particularly rare cases of rail breaks in which the rail head KOPF only breaks out on one side.
  • Fig. 2 shows a further embodiment of the invention.
  • the optical fiber OF not on the outer surface of the rail head KOPF, but in one in Longitudinal direction of the rail SCH extending groove NUT attached.
  • the groove NUT can already be in the rail head KOPF when rolling the rail SCH inserted or subsequently into the installed SCH track be worked in, e.g. B. by milling, grinding or using of a laser. Subsequent work has the advantage that Rail bumps no groove NUT offset can occur, which is a machine It is difficult to insert and fasten the fiber.
  • the groove NUT is preferably like this deep that the optical fiber OF with the adhesive used if necessary completely absorbs.
  • the optical fiber OF is preferably installed by machine. If the KOPF rail head already has a rolled groove NUT, the rails SCH are joined together in a conventional manner at the joints screwed or welded. In the latter case, in the area of The groove NUT must be welded by hand. Then drives a machine running on the finished track removes the rail SCH and sticks into the groove NUT the optical fiber OF.
  • the rails SCH are also in a conventional manner to the Butt joints screwed or welded together. Then one opens machine from the finished track machine and works on the the intended location in the rail head HEAD the groove NUT. If possible in the same operation then fastened the machine - e.g. B. by gluing KLE - the optical fiber OF in the groove NUT. After all, you connect one thing End of the optical fiber OF with a light source, for example with a Semiconductor laser. The other end of the optical fiber OF is connected to a Evaluation device connected to a photodiode for receiving the transmitted light includes. The evaluation device is designed so that a Alarm action is initiated as soon as the strength of the received Light signal drops below a predetermined threshold.
  • the evaluation device can be located on the same side like the light source.
  • the other end of the optical fiber OF is mirrored, so that an incoming light signal is thrown back and by the Evaluation device can be received.
  • This arrangement has the Advantage that when the optical fiber OF is broken, the breaking point as Mirror acts. From the running time of the signal can then be removed the breaking point can be closed by the light source. That way the fracture can be localized.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
EP99440301A 1998-11-11 1999-11-05 Dispositif de détection de rails cassés et procédé de fabrication d'un tel dispositif Withdrawn EP1000833A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998151931 DE19851931A1 (de) 1998-11-11 1998-11-11 Anordnung zur Erkennung von Schienenbrüchen und Eisenbahnschiene
DE19851931 1998-11-11

Publications (1)

Publication Number Publication Date
EP1000833A1 true EP1000833A1 (fr) 2000-05-17

Family

ID=7887381

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99440301A Withdrawn EP1000833A1 (fr) 1998-11-11 1999-11-05 Dispositif de détection de rails cassés et procédé de fabrication d'un tel dispositif

Country Status (2)

Country Link
EP (1) EP1000833A1 (fr)
DE (1) DE19851931A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1582430A1 (fr) * 2004-03-29 2005-10-05 The Hong Kong Polytechnic University Système et procédé de surveillance d'une voie ferrée
EP2287062A1 (fr) 2009-07-25 2011-02-23 Centrum dopravniho vyzkumu, v.v.i. Système de surveillance pour détecter les ruptures de rails et procédé de détection
ITBN20110004A1 (it) * 2011-05-24 2012-11-25 Ansaldo Sts Spa Sistema per il monitoraggio del peso e delle anomalie di ruote di materiale rotabile in movimento
CN105568780A (zh) * 2016-02-22 2016-05-11 苏州黄章妹族工业设计有限公司 一种含有光纤的铁路轨道
CN109703599A (zh) * 2019-02-18 2019-05-03 宁波曙翔新材料股份有限公司 道岔裂纹或断裂检测方法和设备及系统
WO2020108873A1 (fr) * 2018-11-26 2020-06-04 Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M. B. H. Système de mesure destiné à la surveillance d'une voie ferrée
US10907958B2 (en) 2017-09-07 2021-02-02 Frank J Smith Railroad track defect detection apparatus and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013219763A1 (de) 2013-09-30 2014-08-28 Siemens Aktiengesellschaft Schienenbrucherkennung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4654520A (en) * 1981-08-24 1987-03-31 Griffiths Richard W Structural monitoring system using fiber optics
US5330136A (en) * 1992-09-25 1994-07-19 Union Switch & Signal Inc. Railway coded track circuit apparatus and method utilizing fiber optic sensing
DE4432329A1 (de) * 1994-09-10 1996-03-14 Daimler Benz Ag Verfahren zur Zuglauf- und Fahrwegüberwachung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4654520A (en) * 1981-08-24 1987-03-31 Griffiths Richard W Structural monitoring system using fiber optics
US5330136A (en) * 1992-09-25 1994-07-19 Union Switch & Signal Inc. Railway coded track circuit apparatus and method utilizing fiber optic sensing
DE4432329A1 (de) * 1994-09-10 1996-03-14 Daimler Benz Ag Verfahren zur Zuglauf- und Fahrwegüberwachung

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1582430A1 (fr) * 2004-03-29 2005-10-05 The Hong Kong Polytechnic University Système et procédé de surveillance d'une voie ferrée
EP2351680A1 (fr) * 2004-03-29 2011-08-03 The Hong Kong Polytechnic University Système et procédé de surveillance d'une voie ferrée
EP2287062A1 (fr) 2009-07-25 2011-02-23 Centrum dopravniho vyzkumu, v.v.i. Système de surveillance pour détecter les ruptures de rails et procédé de détection
ITBN20110004A1 (it) * 2011-05-24 2012-11-25 Ansaldo Sts Spa Sistema per il monitoraggio del peso e delle anomalie di ruote di materiale rotabile in movimento
CN105568780A (zh) * 2016-02-22 2016-05-11 苏州黄章妹族工业设计有限公司 一种含有光纤的铁路轨道
US10907958B2 (en) 2017-09-07 2021-02-02 Frank J Smith Railroad track defect detection apparatus and method
WO2020108873A1 (fr) * 2018-11-26 2020-06-04 Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M. B. H. Système de mesure destiné à la surveillance d'une voie ferrée
US12037030B2 (en) 2018-11-26 2024-07-16 Prodes Gmbh Measuring apparatus for monitoring a railway track including an optical fiber being releasably clamped in rail fastening
CN109703599A (zh) * 2019-02-18 2019-05-03 宁波曙翔新材料股份有限公司 道岔裂纹或断裂检测方法和设备及系统

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Publication number Publication date
DE19851931A1 (de) 2000-05-25

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