EP0571852A1 - Diagnosis device for a wheelset for monitoring moving railway vehicles - Google Patents
Diagnosis device for a wheelset for monitoring moving railway vehicles Download PDFInfo
- Publication number
- EP0571852A1 EP0571852A1 EP93107974A EP93107974A EP0571852A1 EP 0571852 A1 EP0571852 A1 EP 0571852A1 EP 93107974 A EP93107974 A EP 93107974A EP 93107974 A EP93107974 A EP 93107974A EP 0571852 A1 EP0571852 A1 EP 0571852A1
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- European Patent Office
- Prior art keywords
- wheel
- threshold
- wheel set
- sleeper
- track
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- 238000012544 monitoring process Methods 0.000 title abstract description 3
- 238000003745 diagnosis Methods 0.000 title abstract 3
- 241001669679 Eleotris Species 0.000 claims abstract description 12
- 230000001133 acceleration Effects 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 230000005855 radiation Effects 0.000 claims description 14
- 238000011156 evaluation Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 238000012937 correction Methods 0.000 claims 1
- 238000013016 damping Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 1
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Classifications
-
- 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
- B61K9/06—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 by detecting or indicating heat radiation from overheated axles
Definitions
- the invention relates to a wheelset diagnostic device for monitoring passing railway vehicles according to the preamble of claim 1 for the purpose of detecting the temperatures of the wheelset shafts, their drive, braking and bearing components as well as other heat sources to be monitored on the vehicle, in particular radiation surfaces, to the thermal energy of not directly accessible Drive elements is transferred by heat conduction, or with which the temperatures of these devices are simulated.
- measuring geometries are employed, their inclination angle> 90 °. These arrangements require at least one additional track switching device to limit the measuring range.
- the specified measuring points can only be reached if, for example, magnetic rail or eddy current brakes are not lowered, ie are not in the braking position.
- the measurement geometry of the scanning systems in such arrangements can change due to vibration or mechanical impacts, e.g. can change unnoticed by hanging vehicle and / or cargo parts, which can lead to considerable operational risks.
- deflector plates must be installed, which significantly increase the maintenance effort.
- the cable connections are usually laid on the superstructure in order to enable cable replacement even when the ground is frozen. Damage to these electrical connections is therefore relatively common.
- the electrical safety against impermissibly high contact voltages can only be achieved with the rail-mounted measuring systems that have been used so far, which are supplied with 220 V, and with lines that are equipped with free track circuit detection by the electrical connection of a scanner to the respective rail. If the earth connection is disconnected and the infrared sensor housing is live, there may be a risk to life for the maintenance personnel.
- the invention has for its object to overcome these disadvantages and to provide a device with which any wheelset and / or vehicle part with the shortest possible Measuring section can be monitored, the measuring systems can be arranged at any point parallel to the threshold, that is also between the rails, the measuring geometries cannot be changed and the measuring systems can be influenced neither mechanically nor electrically.
- the device according to the invention is characterized in that the individual infrared sources of each vehicle and / or wheel set are scanned several times in parallel by means of suitably arranged deflection units and the infrared radiation as a whole is fed in parallel to one or more infrared receiver units.
- the device can be accommodated in a measuring threshold, which is arranged parallel to the track sleepers, or in a hollow track sleeper.
- the individual deflection units are equipped with one or more closure units through which the infrared radiation reaches the deflection unit.
- the infrared radiation can be deflected and / or clocked and / or masked out by the latter.
- the infrared receiving unit which is also arranged in the measuring threshold or in the hollow track threshold, can receive several signals and, if necessary, link them to one another. Due to the relatively large distance to the rails and due to the electrical shielding by the supporting metal profile, the electromagnetic influence on this receiving unit is reduced to a minimum. All supply and data lines are electrically and mechanically protected by the metal profile.
- the exact wheel position can be determined and thus the measuring range parallel to the track axis from axis to axis can be determined and adjusted and the Measured values may be corrected in a downstream evaluation unit.
- the temperature values of all wheel set components and various vehicle components, the total wheel set weight and the wheel loads are thus available on the evaluation unit.
- Measured variables are available in connection with the acceleration values and the wheel pressure, which also provide information on the condition of the wheel in relation to unbalance and tread damage, which are a cause of bearing damage.
- FIG. 1 shows a hollow track sleeper 11 between two track sleepers 2, in which both the deflection units 9 and the IR receiver unit 15 are accommodated.
- the closure units 9a with which the deflection units are covered can also be seen in FIG.
- the sleepers 2 shows on the rails 1 carried by the sleepers 2 a wheel set consisting of the wheels 4, the wheel set shaft 6 and the wheel set bearings 5.
- the wheelset shaft 6 also carries the drive motor 3.
- Accelerometers 7 are attached to the two rails 1, from which cable connections 7a lead to an evaluation unit (not shown).
- Cables 10 emerge from the end face of the hollow track sleeper 11 and connect the receiving unit to the evaluation unit mentioned.
- the course of the various measuring beams is indicated by means of the arrows 8.
- all braking devices used so far e.g. Block, shaft disc and wheel disc brakes are drawn in, which are generally numbered 12.
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- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Radiation Pyrometers (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Pretreatment Of Seeds And Plants (AREA)
- Endoscopes (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Air Bags (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
Description
Die Erfindung betrifft eine Radsatzdiagnoseeinrichtung zur Überwachung vorbeifahrender Eisenbahnfahrzeuge gemäß dem Oberbegriff des Anspruches 1 zwecks Erfassung der Temperaturen der Radsatzwellen, deren Antriebs-, Brems- und Lagerkomponenten sowie von sonstigen am Fahrzeug zu überwachenden Wärmequellen, insbesondere von Strahlungsflächen, an die Wärmeenergie von nicht direkt zugänglichen Laufwerkselementen durch Wärmeleitung übertragen wird, oder mit denen die Temperaturen dieser Einrichtungen nachgebildet werden.The invention relates to a wheelset diagnostic device for monitoring passing railway vehicles according to the preamble of
Zu diesem Zwecke sind bei nahezu allen Bahnverwaltungen Infrarotmeßsysteme eingesetzt, die auf Betonfundamenten oder an den Schwellen oder an den Schienen befestigt sind und aus Gründen der Freihaltung des Freiraumprofils außerhalb des Raumes zwischen den beiden Schienen befestigt werden müssen. Zwei Schienen plus den Schwellen bilden dabei das Gleis.For this purpose, almost all railway administrations use infrared measuring systems that are attached to concrete foundations or to the sleepers or to the rails and must be attached outside the space between the two rails for the sake of keeping the free space profile. Two rails plus the sleepers form the track.
Alle diese bekannten Einrichtungen haben gravierende Nachteile bezüglich der notwendigen Anzahl von Gleisschalteinrichtungen, der zwangsläufig aufwendigen Befestigungen, der mechanischen und elektrischen Beeinflußbarkeit, der Konstanz der Meßgeometrie, der mit einer Anordnung pro Achse überwachbaren Radsatz- bzw. Fahrzeugelemente und der elektrischen Sicherheit bezüglich des Berührungsschutzes gegen lebensgefährdende elektrische Spannungen an den Gehäusen der Abtasteinrichtungen.All these known devices have serious disadvantages with regard to the necessary number of track switching devices, the inevitably complex fastenings, the mechanical and electrical influenceability, the constancy of the measurement geometry, the wheelset or vehicle elements that can be monitored with one arrangement per axis, and the electrical safety with regard to protection against contact life-threatening electrical voltages on the housings of the scanning devices.
Bei den herkömmlichen Meßsystemen müssen zur Überwachung von Einrichtungen, die zwischen den Laufrädern eines Radsatzes angeordnet sind, Meßgeometrien eingesetzt werden, deren Inklinationswinkel > 90o beträgt. Diese Anordnungen erfordern mindestens ein zusätzliches Gleisschaltmittel zur Eingrenzung des Meßbereiches. Zudem können die festgelegten Meßstellen nur erreicht werden, wen z.B. Magnetschienen- oder Wirbelstrombremsen nicht abgesenkt, d.h. nicht in Bremsstellung sind.In the conventional measurement systems need to monitor devices that are arranged between the running wheels of a wheelset, measuring geometries are employed, their inclination angle> 90 °. These arrangements require at least one additional track switching device to limit the measuring range. In addition, the specified measuring points can only be reached if, for example, magnetic rail or eddy current brakes are not lowered, ie are not in the braking position.
Außerdem ist ein direkter Einfall des Sonnenlichtes in derartige Anordnungen bei tiefstehender Sonne möglich und führt zu Fehlalarmen während der Zugfahrten.In addition, direct incidence of sunlight in such arrangements is possible when the sun is low and leads to false alarms during train journeys.
Die Befestigung der Meßsysteme an Schiene, Schwelle oder auf Betonfundamenten ist wegen des relativ hohen Gewichtes, von bis zu 50 kg, extrem aufwendig. Die mechanische Beeinflussung der schienen- bzw. schwellenbefestigten Einrichtungen führt zu häufigen Systemstörungen und damit zu einer Verringerung der Verfügbarkeit und zu einer Erhöhung der Instandhaltungsaufwendungen.Fastening the measuring systems to rails, sleepers or on concrete foundations is extremely complex due to the relatively high weight of up to 50 kg. The mechanical influencing of the rail or threshold-mounted devices leads to frequent system malfunctions and thus to a reduction in availability and an increase in maintenance costs.
Die Meßgeometrie der Abtastsysteme kann sich bei derartigen Anordnungen durch Vibration oder mechanische Schläge, z.B. durch herabhängende Fahrzeug- und/oder Ladungsteile unbemerkt verändern, was zu erheblichen Betriebsgefährungen führen kann. Zum Schutze der Abtastsysteme müssen daher Abweisbleche installiert werden, die den Instandhaltungsaufwand erheblich erhöhen. Die Kabelverbindungen werden bei diesen Aufbauten üblicherweise auf dem Oberbau verlegt, um auch bei gefrorenem Boden einen Kabelaustausch zu ermöglichen. Beschädigungen an diesen elektrischen Verbindungen sind daher relativ häufig.The measurement geometry of the scanning systems in such arrangements can change due to vibration or mechanical impacts, e.g. can change unnoticed by hanging vehicle and / or cargo parts, which can lead to considerable operational risks. To protect the scanning systems, deflector plates must be installed, which significantly increase the maintenance effort. With these structures, the cable connections are usually laid on the superstructure in order to enable cable replacement even when the ground is frozen. Damage to these electrical connections is therefore relatively common.
Die elektrische Sicherheit gegen unzulässig hohe Berührungsspannungen kann bei den bislang eingesetzten schienenbefestigten Meßsystemen, die mit 220 V versorgt werden, und bei Trassen, die mit Gleiskreisfreimeldung ausgestattet sind, nur durch die elektrische Verbindung eines Abtasters mit der jeweiligen Schiene realisiert werden. Bei abgelöster Erdverbindung und spannungsführendem Infrarotabtastergehäuse kann für das Instandhaltungspersonal Lebensgefahr bestehen.The electrical safety against impermissibly high contact voltages can only be achieved with the rail-mounted measuring systems that have been used so far, which are supplied with 220 V, and with lines that are equipped with free track circuit detection by the electrical connection of a scanner to the respective rail. If the earth connection is disconnected and the infrared sensor housing is live, there may be a risk to life for the maintenance personnel.
Der Erfindung liegt die Aufgabe zugrunde, diese Nachteile zu überwinden und eine Einrichtung anzugeben, mit der jedes beliebige Radsatz- und/oder Fahrzeugteil mit der kürzestmöglichen Meßstrecke überwacht werden kann, deren Meßsysteme an jeder Stelle parallel zur Schwelle, also auch zwischen den Schienen, angeordnet werden können, deren Meßgeometrien unveränderbar und deren Meßsysteme weder mechanisch noch elektrisch beeinflußbar sind.The invention has for its object to overcome these disadvantages and to provide a device with which any wheelset and / or vehicle part with the shortest possible Measuring section can be monitored, the measuring systems can be arranged at any point parallel to the threshold, that is also between the rails, the measuring geometries cannot be changed and the measuring systems can be influenced neither mechanically nor electrically.
Diese Aufgabe ist durch eine Einrichtung gelöst, welche die in Anspruch 1 angegebenen Merkmale aufweist. Die erfindungsgemäße Einrichtung zeichnet sich dadurch aus, daß durch geeignet angeordnete Umlenkeinheiten die einzelnen Infrarotquellen eines jeden Fahrzeugs und/oder Radsatzes mehrfach parallel abgetastet werden und die Infrarotstrahlung insgesamt parallel einer oder mehreren Infrarotempfängereinheiten zugeführt wird.This object is achieved by a device which has the features specified in
Die Einrichtung kann in einer Meßschwelle, die parallel zu den Gleisschwellen angeordnet ist, oder in einer Hohlgleisschwelle untergebracht werden.The device can be accommodated in a measuring threshold, which is arranged parallel to the track sleepers, or in a hollow track sleeper.
Die einzelnen Umlenkeinheiten sind mit einer oder mehreren Verschlußeinheiten ausgestattet, durch welche die Infrarotstrahlung in die Umlenkeinheit gelangt. Durch letztere kann die Infrarotstrahlung umgelenkt und/oder getaktet und/oder ausgeblendet werden.The individual deflection units are equipped with one or more closure units through which the infrared radiation reaches the deflection unit. The infrared radiation can be deflected and / or clocked and / or masked out by the latter.
Die ebenfalls in der Meßschwelle oder in der Hohlgleisschwelle angeordnete Infrarotempfangseinheit kann mehrere Signale empfangen und gegebenenfalls miteinander verknüpfen. Durch den relativ großen Abstand zu den Schienen sowie auf Grund der elektrischen Abschirmung durch das tragende Metallprofil ist die elektromagnetische Beeinflussung dieser Empfangseinheit auf ein Minimum reduziert.
Alle Versorgungs- und Datenleitungen sind durch das Metallprofil elektrisch und mechanisch geschützt.The infrared receiving unit, which is also arranged in the measuring threshold or in the hollow track threshold, can receive several signals and, if necessary, link them to one another. Due to the relatively large distance to the rails and due to the electrical shielding by the supporting metal profile, the electromagnetic influence on this receiving unit is reduced to a minimum.
All supply and data lines are electrically and mechanically protected by the metal profile.
Durch die im Bereich der Schwelle an der Schiene installierten Einrichtngen zur Erfassung des Radauflagedruckes und der Beschleunigung der Schiene bzw. der Schwelle in Richtung senkrecht zur Schienenlängsachse kann die genaue Radposition ermittelt und somit der Meßbereich parallel zur Gleisachse von Ache zu Achse ermittelt und eingestellt und die Meßwerte in einer nachgeschalteten Auswerteeinheit ggf. korrigiert werden.Due to the devices installed in the area of the threshold on the rail to record the wheel support pressure and the acceleration of the rail or the threshold in the direction perpendicular to the longitudinal axis of the rail, the exact wheel position can be determined and thus the measuring range parallel to the track axis from axis to axis can be determined and adjusted and the Measured values may be corrected in a downstream evaluation unit.
An der Auswerteeinheit stehen somit die Temperaturwerte aller Radsatzkomponenten und diverser Fahrzeugkomponenten, das Radsatzgewicht insgesamt, sowie die Radlasten zur Verfügung.The temperature values of all wheel set components and various vehicle components, the total wheel set weight and the wheel loads are thus available on the evaluation unit.
Im Zusammenhang mit den Beschleunigungswerten und dem Raddruck stehen Meßgrößen zur Verfügung, die auch auf den Zustand des Rades in Bezug auf Unwuchten und Laufflächenschäden, die eine Ursache für Lagerschäden sind, Aufschluß geben.Measured variables are available in connection with the acceleration values and the wheel pressure, which also provide information on the condition of the wheel in relation to unbalance and tread damage, which are a cause of bearing damage.
In der Zeichnung ist die Erfindung in einem Ausführungsbeispiel dargestellt. Es zeigen:
- Fig. 1
- schematisch die Anordnung einer Hohlgleisschwelle parallel zwischen zwei Gleisschwellen in perspektivischer Ansicht,
- Fig. 2
- schematisch den Aufbau der Einrichtung in einer Hohlgleisschwelle mit darüberstehendem Radsatz mit Antriebsmotor, innen- und außenliegenden Radsatzlagern und Bremsen,
- Fig. 3
- schematisch einen Schnitt durch den Radsatz und durch die Hohlgleisschwelle mit dem Verlauf der IR-Strahlung von den Quellen zur IR-Empfangseinheit.
- Fig. 1
- schematically the arrangement of a hollow track sleeper parallel between two track sleepers in a perspective view,
- Fig. 2
- schematically the structure of the device in a hollow track sleeper with an overlying wheel set with drive motor, internal and external wheel set bearings and brakes,
- Fig. 3
- schematically a section through the wheel set and through the hollow track threshold with the course of the IR radiation from the sources to the IR receiving unit.
In Fig.1 ist zwischen zwei Gleisschwellen 2 eine Hohlgleisschwelle 11 gezeigt, in der sowohl die Umlenkeinheiten 9 als auch die IR-Empfangseinheit 15 untergebracht sind. Außerdem sind in Fig.1 noch die Verschlußeinheiten 9a zu erkennen, mit denen die Umlenkeinheiten abgedeckt werden.1 shows a
Fig.2 zeigt auf den von den Schwellen 2 getragenen Schienen 1 einen Radsatz, der aus den Laufrädern 4, der Radsatzwelle 6 sowie den Radsatzlagern 5 besteht. Dabei trägt die Radsatzwelle 6 auch den Fahrmotor 3.2 shows on the
An den beiden Schienen 1 sind die Beschleunigungsaufnehmer 7 angebracht, von denen aus Kabelanschlüsse 7a zu einer nicht weiter dargestellten Auswerteeinheit führen.
Aus der Stirnseite der Hohlgleisschwelle 11 treten Kabel 10 aus, welche die Empfangseinheit mit der genannten Auswerteeinheit verbinden.
Mittels der Pfeile 8 ist der Verlauf der verschiedenen Meßstrahlen (die Meßgeometrie) angedeutet. Dies ist insbesondere aus der Fig.3 erkennbar, in deren Schnittbild der Verlauf der Pfeile 8 (= IR-Strahlung) vom Fahrmotor 3 bzw. von den Laufrädern 4 bzw. von den Radsatzlagern 5 dargestellt ist. Zusätzlich hierzu sind alle bislang eingesetzten Bremseinrichtungen, wie z.B. Klotz-, Wellenscheiben- und Radscheibenbremsen eingezeichnet, die pauschal mit 12 beziffert sind. Von ihnen verlaufen ebenfalls Pfeile 8 (=IR-Strahlung) über die Umlenkeinheiten 9 zu der IR-Empfangseinheit 15. In ihr erfolgt die Umwandlung der Strahlungsenergie in elektrische Energie, wobei die ankommenden Signale außerdem verstärkt werden.The course of the various measuring beams (the measuring geometry) is indicated by means of the
Claims (5)
daß durch geeignet im Gleis angeordnete Infrarotstrahlungsumlenkeinheiten (9) die einzelnen Infrarotquellen eines jeden Radsatzes (3-6) und oder des Fahrzeuges selbst mehrfach parallel, und alle Quellen insgesamt parallel, mehrfach einer Infrarotempfangseinheit (15) zugeleitet und in dieser Einheit die Strahlungsenergie jeder mehrfach parallel eingespiegelten Wärmequelle parallel in elektrische Signale umgewandelt werden und zum Zwecke der Erfassung der Radposition und zur Infrarotmeßwertkorrektur, zwischen jeder der beiden Schienen (1) und deren Auflager, die die besagte IR-Empfangseinheit (15) trägt, Beschleunigungsaufnehmer (7) installiert sind, die eine Ermittlung des jeweiligen Raddrucks und/oder der Beschleunigungswerte eines darüberfahrenden Rades (4) ermöglichen, und die elektrischen Signale der Radsatztemperatur-, Radsatzpositions-, Radgewichts- und /oder Beschleunigungsmessungen in einer nachgeschalteten Auswerteeinheit derart aufbereitet werden, daß an einer geeigneten Schnittstelle der Auswerteeinheit die absoluten Einzeltemperaturwerte und durch die jeweiligen Gewichts- und Beschleunigungswerte korrigierten Temperaturprofile und die Gewichts- und Beschleunigungswerte der Radsätze (3-6) und des Fahrzeuges abegriffen werden können.Device for detecting the temperatures of the wheelset shaft and / or traction motors and / or the wheel disks and / or wheel brake disks and / or shaft brake disks and / or wheelset bearings located between the wheels and / or wheelset bearings arranged in the wheel disks and / or arranged on the shaft ends on the outside of the wheels Wheelset bearings and / or from radiation surfaces or heat sources to which the temperatures of vehicle and / or wheelset elements that are not directly accessible but to be monitored are transferred by heat conduction or with which these are simulated, characterized in that
that by suitably arranged in the track infrared radiation deflection units (9) the individual infrared sources of each wheel set (3-6) and or of the vehicle itself several times in parallel, and all sources in parallel, several times an infrared receiving unit (15) and the radiation energy each multiple times heat source reflected in parallel are converted in parallel into electrical signals and for the purpose of detecting the wheel position and for infrared measurement correction, acceleration sensors (7) are installed between each of the two rails (1) and their supports, which the said IR receiver unit (15) carries, which enable a determination of the respective wheel pressure and / or the acceleration values of a wheel (4) traveling over it, and the electrical signals of the wheel set temperature, wheel set position, wheel weight and / or acceleration measurements are processed in a downstream evaluation unit in such a way that a suitable one n Interface of the evaluation unit, the absolute individual temperature values and the temperature profiles corrected by the respective weight and acceleration values and the weight and acceleration values of the wheel sets (3-6) and the vehicle can be tapped.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4217681A DE4217681C3 (en) | 1992-05-29 | 1992-05-29 | Wheelset diagnostic device for monitoring passing railway vehicles |
DE4217681 | 1992-05-29 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0571852A1 true EP0571852A1 (en) | 1993-12-01 |
EP0571852B1 EP0571852B1 (en) | 1996-02-07 |
EP0571852B2 EP0571852B2 (en) | 2001-08-29 |
Family
ID=6459923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93107974A Expired - Lifetime EP0571852B2 (en) | 1992-05-29 | 1993-05-17 | Diagnosis device for a wheelset for monitoring moving railway vehicles |
Country Status (8)
Country | Link |
---|---|
US (1) | US5397900A (en) |
EP (1) | EP0571852B2 (en) |
AT (1) | ATE133903T1 (en) |
CA (1) | CA2097381C (en) |
DE (1) | DE4217681C3 (en) |
DK (1) | DK0571852T4 (en) |
ES (1) | ES2085677T5 (en) |
FI (1) | FI932344A (en) |
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US3545005A (en) * | 1965-09-24 | 1970-12-01 | Cornelius A Gallagher | Hotbox detector |
US4323211A (en) * | 1980-04-28 | 1982-04-06 | Servo Corporation Of America | Self adjusting wheel bearing heat signal processing circuit |
DE3020331A1 (en) * | 1980-05-29 | 1981-12-17 | Industrie-Automation Gmbh & Co, 6900 Heidelberg | DEVICE FOR DETECTING INVALIDLY WARMED COMPONENTS ON DRIVING RAILWAYS |
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EP0424570B1 (en) * | 1989-10-27 | 1993-09-01 | SIGNALTECHNIK GmbH | Device for contactless detection of overheated parts on passing railway vehicles |
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1993
- 1993-05-17 AT AT93107974T patent/ATE133903T1/en not_active IP Right Cessation
- 1993-05-17 ES ES93107974T patent/ES2085677T5/en not_active Expired - Lifetime
- 1993-05-17 DK DK93107974T patent/DK0571852T4/en active
- 1993-05-17 EP EP93107974A patent/EP0571852B2/en not_active Expired - Lifetime
- 1993-05-21 FI FI932344A patent/FI932344A/en not_active Application Discontinuation
- 1993-05-27 US US08/067,836 patent/US5397900A/en not_active Expired - Lifetime
- 1993-05-31 CA CA002097381A patent/CA2097381C/en not_active Expired - Fee Related
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1052606B2 (en) † | 1999-05-14 | 2013-07-17 | TECNOSITAF S.p.A. | Thermographic system to check and prevent fires in a vehicle |
WO2001028838A1 (en) * | 1999-10-19 | 2001-04-26 | Vae Aktiengesellschaft | Device for measuring the temperatures of axles or bearings for locating hot-boxes or overheated brakes in rolling stock |
DE102004014282C5 (en) * | 2004-03-22 | 2008-06-12 | Db Netz Ag | Diagnosis and condition monitoring in the overflow area of switches, rigid frogs and crossings |
EP1847819A2 (en) * | 2006-04-05 | 2007-10-24 | Schenck Process GmbH | Measuring section on a rail |
EP1847819A3 (en) * | 2006-04-05 | 2007-11-07 | Schenck Process GmbH | Measuring section on a rail |
EP2022698A3 (en) * | 2007-07-24 | 2009-09-09 | Baldur Rögener | Method and surveillance system for managing rail tracks |
Also Published As
Publication number | Publication date |
---|---|
FI932344A0 (en) | 1993-05-21 |
DE4217681C2 (en) | 1994-06-23 |
DK0571852T3 (en) | 1996-05-06 |
DE4217681C3 (en) | 1999-02-25 |
FI932344A (en) | 1993-11-30 |
ES2085677T3 (en) | 1996-06-01 |
EP0571852B2 (en) | 2001-08-29 |
EP0571852B1 (en) | 1996-02-07 |
DK0571852T4 (en) | 2001-10-08 |
ES2085677T5 (en) | 2002-01-16 |
CA2097381C (en) | 2002-03-19 |
DE4217681A1 (en) | 1993-12-02 |
CA2097381A1 (en) | 1993-11-30 |
US5397900A (en) | 1995-03-14 |
ATE133903T1 (en) | 1996-02-15 |
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