EP1772342B1 - Temperature monitoring device for axle bearings - Google Patents

Temperature monitoring device for axle bearings Download PDF

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Publication number
EP1772342B1
EP1772342B1 EP06020661A EP06020661A EP1772342B1 EP 1772342 B1 EP1772342 B1 EP 1772342B1 EP 06020661 A EP06020661 A EP 06020661A EP 06020661 A EP06020661 A EP 06020661A EP 1772342 B1 EP1772342 B1 EP 1772342B1
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EP
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Prior art keywords
housing
acceleration sensor
monitoring device
threshold
temperature monitoring
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EP06020661A
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German (de)
French (fr)
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EP1772342A3 (en
EP1772342B2 (en
EP1772342A2 (en
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Bernd Neuroth
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Neuroth Bernd
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    • 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
    • B61L1/20—Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
    • B61K9/04—Detectors for indicating the overheating of axle bearings and the like, e.g. associated with the brake system for applying the brakes in case of a fault
    • 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

Definitions

  • the invention relates to a device for monitoring the temperature of the wheelset bearing of passing rail vehicles, comprising at least one located below the rail track in a housing and connected to an evaluation IR receiver unit, wherein the housing is used supporting at least two attenuators in a threshold is.
  • these housings are not connected directly, but via at least two attenuators each with the measuring or hollow threshold, which may consist of rubber, plastic or are formed by steel springs and have a stroke of about 2 to 4 mm. This avoids that the vibrations that always when crossing a wheelset on the measuring or hollow threshold arise, not or only to a limited extent on the IR receiving units are transmitted, which are sensitive components and can be damaged or destroyed by these vibrations.
  • the measuring or hollow threshold which may consist of rubber, plastic or are formed by steel springs and have a stroke of about 2 to 4 mm.
  • IR receivers are being checked for proper functioning about every 6 months. With regard to defective vibration dampers, this period can clearly be too long. Defects on the vibration dampers may already be present prior to installation or even occur during installation or at a later time. However, a faulty vibration damper involves the risk that the associated IR receiving unit occasionally fails over a shorter or longer period of time without being able to detect the actual cause. This can then lead to damage or destruction of the IR receiving unit and / or to erroneous measurement results.
  • the invention is therefore based on the object, a device for monitoring the temperature of the axlebox of passing rail vehicles in such a way that a defective or not working properly vibration damper can be detected immediately and thus excluded damage or destruction of the IR receiver and resulting erroneous Measurement results are avoided.
  • the housing is also associated with a connected to the evaluation unit acceleration sensor.
  • the housing associated acceleration sensor it is possible to detect faulty vibration immediately by the measured acceleration values with The values stored in the evaluation unit are compared and impermissible deviations are immediately communicated as an alarm signal from a monitoring center.
  • the acceleration sensor can be arranged either in the housing or on the housing.
  • a rail vehicle for example a wagon, of a wheel set thereof.
  • the wheel 1 runs in the direction of rotation of the arrow 4 on a rail 5, which in turn is supported by a plurality of sleepers 6.
  • Each wheelset bearing 3 is associated with an IR receiving unit 7, which is located in a closable housing 8.
  • the housing 8 is in turn at least partially inserted into a recess 9 of a designed as a measuring or hollow threshold threshold 6a.
  • the housing 8 is supported for example via four attenuators 10, of which only two attenuators 10 can be seen in the drawing, on the top of the threshold 6a.
  • Attenuators 10 are made of elastically adjusted rubber or plastic or are formed by steel springs and have a stroke of about 2 to 4 mm. These attenuators 10 have the task to preclude that the inevitably occurring during the crossing of a car on the threshold 6a vibrations in a disturbing manner via the housing 8 to the therein and sensitive to vibration components, in particular to the housing 8 located in the IR Receive receiving unit 7 and bring here adverse consequences. These consequences may be that the IR receiving unit 7 occasionally fails for a shorter or longer period of time or is destroyed and / or supplies incorrect or incorrect measurement results to an evaluation unit, not shown. It may now occur in practice that one or more attenuators 10 is defective or defective. Such a defect may already be present prior to installation, during installation or occur at a later date.
  • a per se known acceleration sensor 11 is arranged in the illustrated embodiment in the housing 8, which is also connected to the aforementioned evaluation unit.
  • this acceleration sensor 11 the attenuation of the housing 8 and thus also the vibration impinging on the IR receiving unit 7 can be measured and compared with a previously defined and stored limit value. If the stored limit values are exceeded, a signal is sent as a maintenance alarm to a monitoring center.
  • the IR receiving unit 7 and the acceleration sensor 11 are not constantly turned on and thus active.
  • the IR receiving unit 7 and the acceleration sensor 11 are activated or deactivated by rail contacts 12, 13 which, seen in the direction of travel of a train, are arranged at a distance in front of and behind the threshold 6a on a different threshold 6.
  • the acceleration sensor 11 may also be arranged on the outside of the housing 8.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Radiation Pyrometers (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Rolling Contact Bearings (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

Device for monitoring the temperature of a wheel-set bearing of a train passing a measurement point comprises an infrared receiver unit and an evaluation unit contained within a housing beneath the level of a track section. The housing in inserted within a sleeper and supported on at least two shock-absorbing members. The housing (8) also contains an acceleration sensor (11) that is connected to the evaluation unit.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Überwachung der Temperatur der Radsatzlager von vorbeifahrenden Schienenfahrzeugen, bestehend aus mindestens einer unterhalb des Schienenstranges in einem Gehäuse befindlichen und an eine Auswerteinheit angeschlossene IR-Empfangseinheit, wobei das Gehäuse sich über mindestens zwei Dämpfungsglieder abstützend in eine Schwelle eingesetzt ist.The invention relates to a device for monitoring the temperature of the wheelset bearing of passing rail vehicles, comprising at least one located below the rail track in a housing and connected to an evaluation IR receiver unit, wherein the housing is used supporting at least two attenuators in a threshold is.

Es ist bekannt, wie z.B. aus der US 2004/0075570 A1 , die Temperatur von Radsatzlagern an Schienenfahrzeugen, insbesondere an Eisenbahnfahrzeugen, zu überwachen, um sogenannte Heißläufer-Entgleisungen zu vermeiden. Dazu werden von den Bahnverwaltungen IR-Messsysteme mit mindestens einer IR-Empfangseinheit eingesetzt, die sich unterhalb des Schienenstranges befindet und meist in einer besonders ausgebildeten Messschwelle oder einer Hohlschwelle untergebracht ist. Meistens sind jedoch in einer solchen Schwelle vier IR-Empfangseinheiten vorgesehen, über die die Temperaturen aller Radsatzlager eines Radsatzes erfasst werden können. Die dabei ermittelten Werte werden normalerweise mit den Werten bzw. Infrarotsignalmustern verglichen, die in einer Auswerteinheit, beispielsweise einem Rechner, abgespeichert sind. Bei unzulässigen Abweichungen wird ein Alarmsignal abgegeben. Um diese IR-Empfangseinheiten gegen äußere Einflüsse zu schützen, sind dieselben jeweils in verschließbaren Gehäusen untergebracht, die in die Mess- bzw. Hohlschwelle eingesetzt sind.It is known, as for example from the US 2004/0075570 A1 To monitor the temperature of wheelset bearings on rail vehicles, especially on railway vehicles, in order to avoid so-called hot-runner derailments. For this purpose, the rail authorities use IR measuring systems with at least one IR receiving unit, which is located below the rail track and is usually accommodated in a specially designed measuring sleeper or a hollow sleeper. In most cases, however, four IR receiving units are provided in such a threshold, via which the temperatures of all wheelset bearings of a wheelset can be detected. The values determined in this case are usually compared with the values or infrared signal patterns which are stored in an evaluation unit, for example a computer. In case of impermissible deviations, an alarm signal is emitted. To protect these IR receiving units against external influences, they are each housed in lockable housings, which are inserted into the measuring or hollow threshold.

Diese Gehäuse werden allerdings nicht direkt, sondern über jeweils mindestens zwei Dämpfungsglieder mit der Mess- bzw. Hohlschwelle verbunden, die aus Gummi, Kunststoff bestehen können oder durch Stahlfedern gebildet sind und einen Hub von etwa 2 bis 4 mm aufweisen. Dadurch wird vermieden, dass die Schwingungen, die immer beim Überfahren eines Radsatzes über die Mess- bzw. Hohlschwelle entstehen, nicht bzw. nur in geringem Maße auf die IR-Empfangseinheiten übertragen werden, die empfindliche Bauteile sind und die durch diese Schwingungen beschädigt oder zerstört werden können.However, these housings are not connected directly, but via at least two attenuators each with the measuring or hollow threshold, which may consist of rubber, plastic or are formed by steel springs and have a stroke of about 2 to 4 mm. This avoids that the vibrations that always when crossing a wheelset on the measuring or hollow threshold arise, not or only to a limited extent on the IR receiving units are transmitted, which are sensitive components and can be damaged or destroyed by these vibrations.

Derzeit werden die IR-Empfangseinheiten etwa alle 6 Monate auf ihre richtige Funktionsweise überprüft. Im Hinblick auf defekte Schwingungsdämpfer kann dieser Zeitraum eindeutig zu lang sein. Defekte an den Schwingungsdämpfern können bereits vor dem Einbau vorhanden sein oder aber auch schon beim Einbau oder zu einem späteren Zeitpunkt auftreten. Ein fehlerhafter Schwingungsdämpfer bringt jedoch die Gefahr mit sich, dass die zugeordnete IR-Empfangseinheit gelegentlich über einen kürzeren oder längeren Zeitraum ausfällt, ohne dass die eigentliche Ursache erkannt werden kann. Dies kann dann zu einer Beschädigung oder Zerstörung der IR-Empfangseinheit und/oder zu fehlerhaften Messergebnissen führen.Currently, IR receivers are being checked for proper functioning about every 6 months. With regard to defective vibration dampers, this period can clearly be too long. Defects on the vibration dampers may already be present prior to installation or even occur during installation or at a later time. However, a faulty vibration damper involves the risk that the associated IR receiving unit occasionally fails over a shorter or longer period of time without being able to detect the actual cause. This can then lead to damage or destruction of the IR receiving unit and / or to erroneous measurement results.

Der Erfindung liegt deshalb die Aufgabe zugrunde, eine Vorrichtung zur Überwachung der Temperatur der Radsatzlager von vorbeifahrenden Schienenfahrzeugen so auszugestalten, dass ein defekter bzw. nicht einwandfrei arbeitender Schwingungsdämpfer sofort erkannt werden kann und somit eine Beschädigung oder Zerstörung der IR-Empfangseinheit ausgeschlossen und daraus resultierende fehlerhafte Messergebnisse vermieden werden.The invention is therefore based on the object, a device for monitoring the temperature of the axlebox of passing rail vehicles in such a way that a defective or not working properly vibration damper can be detected immediately and thus excluded damage or destruction of the IR receiver and resulting erroneous Measurement results are avoided.

Zur Lösung dieser Aufgabe wird gemäß der Erfindung bei einer Vorrichtung zur Überwachung der Temperatur der Radsatzlager von vorbeifahrenden Schienenfahrzeugen der eingangs genannten Art vorgeschlagen, dass dem Gehäuse ein ebenfalls an die Auswerteinheit angeschlossener Beschleunigungssensor zugeordnet ist.To solve this problem is proposed according to the invention in a device for monitoring the temperature of the axlebox of passing rail vehicles of the type mentioned that the housing is also associated with a connected to the evaluation unit acceleration sensor.

Durch den zusätzlichen, dem Gehäuse zugeordneten Beschleunigungssensors ist es möglich, fehlerhafte Schwingungsdämpfer sofort zu erkennen, indem die gemessenen Beschleunigungswerte mit den in der Auswerteinheit gespeicherten Werten verglichen und unzulässige Abweichungen sofort als Alarmsignal einer Überwachungszentrale mitgeteilt werden.Due to the additional, the housing associated acceleration sensor, it is possible to detect faulty vibration immediately by the measured acceleration values with The values stored in the evaluation unit are compared and impermissible deviations are immediately communicated as an alarm signal from a monitoring center.

Der Beschleunigungssensor kann dabei entweder im Gehäuse oder am Gehäuse angeordnet sein.The acceleration sensor can be arranged either in the housing or on the housing.

Die Erfindung wird nachfolgend anhand eines in einer Zeichnung dargestellten Ausführungsbeispieles näher erläutert.The invention will be explained in more detail with reference to an embodiment shown in a drawing.

In dieser Zeichnung ist von einem Schienenfahrzeug, beispielsweise einem Waggon, von einem Radsatz desselben nur ein Rad 1 mit einer Achse 2 und einem Radsatzlager 3 dargestellt. Das Rad 1 läuft in Drehrichtung des Pfeiles 4 auf einer Schiene 5, die ihrerseits von einer Vielzahl von Schwellen 6 getragen wird. Jedem Radsatzlager 3 ist eine IR-Empfangseinheit 7 zugeordnet, die sich in einem verschließbaren Gehäuse 8 befindet. Das Gehäuse 8 ist seinerseits zumindest teilweise in eine Ausnehmung 9 einer als Mess- oder Hohlschwelle ausgebildeten Schwelle 6a eingesetzt. Dabei stützt sich das Gehäuse 8 beispielsweise über vier Dämpfungsglieder 10, von denen in der Zeichnung nur zwei Dämpfungsglieder 10 zu sehen sind, auf der Oberseite der Schwelle 6a ab.In this drawing, only one wheel 1 with an axle 2 and a wheel set bearing 3 is shown by a rail vehicle, for example a wagon, of a wheel set thereof. The wheel 1 runs in the direction of rotation of the arrow 4 on a rail 5, which in turn is supported by a plurality of sleepers 6. Each wheelset bearing 3 is associated with an IR receiving unit 7, which is located in a closable housing 8. The housing 8 is in turn at least partially inserted into a recess 9 of a designed as a measuring or hollow threshold threshold 6a. In this case, the housing 8 is supported for example via four attenuators 10, of which only two attenuators 10 can be seen in the drawing, on the top of the threshold 6a.

Diese Dämpfungsglieder 10 bestehen aus elastisch eingestelltem Gummi oder Kunststoff oder sind durch Stahlfedern gebildet und haben einen Hub von etwa 2 bis 4 mm. Diese Dämpfungsglieder 10 haben dabei die Aufgabe, auszuschließen, dass die bei der Überfahrt eines Waggons über die Schwelle 6a zwangsläufig auftretenden Schwingungen in störender Weise über das Gehäuse 8 an die darin befindlichen und für Schwingungen empfindlichen Bauteile, insbesondere an die im Gehäuse 8 befindliche IR-Empfangseinheit 7 gelangen und hier nachteilige Folgen mit sich bringen. Diese Folgen können darin, bestehen, dass die IR-Empfangseinheit 7 gelegentlich über einen kürzeren oder längeren Zeitraum ausfällt, beschädigt oder zerstört wird und/oder falsche bzw. fehlerhafte Messergebnisse an eine nicht dargestellte Auswerteinheit liefert. Es kann nun in der Praxis vorkommen, dass ein oder mehrere Dämpfungsglieder 10 defekt ist bzw. defekt sind. Ein solcher Defekt kann bereits vor dem Einbau vorhanden sein, beim Einbau entstehen oder zu einem späteren Zeitpunkt auftreten. Um einen solchen Defekt feststellen zu können, ist im gezeichneten Ausführungsbeispiel im Gehäuse 8 ein an sich bekannter Beschleunigungssensor 11 angeordnet, der ebenfalls an die bereits erwähnte Auswerteinheit angeschlossen ist. Mittels dieses Beschleunigungssensors 11 kann die Dämpfung des Gehäuses 8 und damit auch die auf die IR-Empfangseinheit 7 auftreffende Schwingung gemessen und mit einem zuvor festgelegten und gespeicherten Grenzwert verglichen werden. Bei einer Überschreitung der gespeicherten Grenzwerte wird ein Signal als Wartungsalarm ein eine Überwachungszentrale gesandt.These attenuators 10 are made of elastically adjusted rubber or plastic or are formed by steel springs and have a stroke of about 2 to 4 mm. These attenuators 10 have the task to preclude that the inevitably occurring during the crossing of a car on the threshold 6a vibrations in a disturbing manner via the housing 8 to the therein and sensitive to vibration components, in particular to the housing 8 located in the IR Receive receiving unit 7 and bring here adverse consequences. These consequences may be that the IR receiving unit 7 occasionally fails for a shorter or longer period of time or is destroyed and / or supplies incorrect or incorrect measurement results to an evaluation unit, not shown. It may now occur in practice that one or more attenuators 10 is defective or defective. Such a defect may already be present prior to installation, during installation or occur at a later date. In order to be able to determine such a defect, a per se known acceleration sensor 11 is arranged in the illustrated embodiment in the housing 8, which is also connected to the aforementioned evaluation unit. By means of this acceleration sensor 11, the attenuation of the housing 8 and thus also the vibration impinging on the IR receiving unit 7 can be measured and compared with a previously defined and stored limit value. If the stored limit values are exceeded, a signal is sent as a maintenance alarm to a monitoring center.

Es wird darauf hingewiesen, dass die IR-Empfangseinheit 7 und der Beschleunigungssensor 11 nicht ständig angeschaltet und damit aktiv sind. Die IR-Empfangseinheit 7 und der Beschleunigungssensor 11 werden durch Schienenkontakte 12, 13 aktiviert bzw. deaktiviert, die, in Fahrtrichtung eines Zuges gesehen, mit Abstand vor und hinter der Schwelle 6a auf einer anderen Schwelle 6 angeordnet sind.It should be noted that the IR receiving unit 7 and the acceleration sensor 11 are not constantly turned on and thus active. The IR receiving unit 7 and the acceleration sensor 11 are activated or deactivated by rail contacts 12, 13 which, seen in the direction of travel of a train, are arranged at a distance in front of and behind the threshold 6a on a different threshold 6.

In Abänderung des erläuterten Ausführungsbeispieles kann der Beschleunigungssensor 11 auch außen am Gehäuse 8 angeordnet sein.In a modification of the illustrated embodiment, the acceleration sensor 11 may also be arranged on the outside of the housing 8.

Claims (3)

  1. Device for monitoring the temperature of the wheel set bearings of passing rail vehicles consisting of at least one IR receiving unit located in a housing below the rail track and connected to an evaluating unit, wherein the housing supported by at least two damping members is inserted into a sleeper, characterised in that an acceleration sensor (11) likewise connected to the evaluating unit is associated with the housing (8).
  2. Device according to claim 1, characterised in that the acceleration sensor (11) is arranged in the housing (8).
  3. Device according to claim 1, characterised in that the acceleration sensor (11) is arranged outside on the housing (8).
EP06020661.2A 2005-10-07 2006-09-30 Temperature monitoring device for axle bearings Active EP1772342B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202005015790U DE202005015790U1 (en) 2005-10-07 2005-10-07 Wheel-set bearing temperature monitoring arrangement for railway rolling stock has an infrared sensor and an acceleration sensor for detecting faulty operation of the sensor shock absorber mounting elements

Publications (4)

Publication Number Publication Date
EP1772342A2 EP1772342A2 (en) 2007-04-11
EP1772342A3 EP1772342A3 (en) 2007-10-10
EP1772342B1 true EP1772342B1 (en) 2008-12-17
EP1772342B2 EP1772342B2 (en) 2016-05-25

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ID=35530590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06020661.2A Active EP1772342B2 (en) 2005-10-07 2006-09-30 Temperature monitoring device for axle bearings

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EP (1) EP1772342B2 (en)
AT (1) ATE417772T1 (en)
DE (2) DE202005015790U1 (en)
ES (1) ES2318641T5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2647543B1 (en) 2012-04-04 2017-03-01 voestalpine SIGNALING Siershahn GmbH System for detecting characteristics of passing railway vehicles

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007006904U1 (en) 2007-05-14 2007-07-19 Neuroth, Bernd, Colmenar Viejo Monitoring device for the wheelsets of rail vehicles
DE102009018036B4 (en) 2009-04-18 2014-02-06 Iakov Fridman Device for the prevention of train accidents due to damaged railway wagon wheel sets and use of this device
DE102010009754A1 (en) 2010-03-01 2011-09-01 Schenck Process Gmbh Threshold for supporting rails
DE102017120071A1 (en) * 2017-08-31 2019-02-28 Pcm Rail.One Ag Concrete sleepers for a railway track and method for detecting loads and / or deformations
DE102020127311A1 (en) * 2020-10-16 2022-04-21 BEN-INNOVA Systemtechnik GmbH Device for detecting locked brakes and/or hot boxes in rail vehicles and system with a device for detecting locked brakes and/or hot boxes and at least one sleeper for supporting rails

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379330A (en) * 1981-01-14 1983-04-05 Servo Corporation Of America Railroad car wheel detector
DE10122183B4 (en) * 2001-05-08 2004-02-26 Rolf Käufer Accident / fire protection for vehicles
US20040075570A1 (en) * 2002-10-18 2004-04-22 General Electric Company Remote detection of railroad wheel and bearing temperature apparatus and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2647543B1 (en) 2012-04-04 2017-03-01 voestalpine SIGNALING Siershahn GmbH System for detecting characteristics of passing railway vehicles

Also Published As

Publication number Publication date
EP1772342A3 (en) 2007-10-10
EP1772342B2 (en) 2016-05-25
EP1772342A2 (en) 2007-04-11
DE502006002365D1 (en) 2009-01-29
DE202005015790U1 (en) 2005-12-29
ES2318641T3 (en) 2009-05-01
ES2318641T5 (en) 2016-10-31
ATE417772T1 (en) 2009-01-15

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