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DE1031338B - Procedure for the detection of overheated railway axle bearings - Google Patents

Procedure for the detection of overheated railway axle bearings

Info

Publication number
DE1031338B
DE1031338B DES52822A DES0052822A DE1031338B DE 1031338 B DE1031338 B DE 1031338B DE S52822 A DES52822 A DE S52822A DE S0052822 A DES0052822 A DE S0052822A DE 1031338 B DE1031338 B DE 1031338B
Authority
DE
Germany
Prior art keywords
temperature
bearings
overheated
procedure
measurement results
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.)
Pending
Application number
DES52822A
Other languages
German (de)
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.)
Siemens Corp
Original Assignee
Siemens Corp
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 Siemens Corp filed Critical Siemens Corp
Priority to DES52822A priority Critical patent/DE1031338B/en
Publication of DE1031338B publication Critical patent/DE1031338B/en
Priority to DES60984A priority patent/DE1148252B/en
Priority to DES65440A priority patent/DE1148253B/en
Priority to DES69199A priority patent/DE1131254B/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61KAUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K9/00Railway 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
    • B61K9/04Detectors 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
    • B61K9/06Detectors 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00Devices along the route controlled by interaction with the vehicle or train
    • B61L1/20Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Description

Verfahren zum Feststellen heißgelaufener Eisenbahnachslager Es ist bekannt, durch auf beiden Seiten eines Gleises ortsfest aufgestellte Heißläufersuchgeräte jeden Achslagerdeckel vorüberrollender Eisenbahnwagen, der eine zulässige Höchsttemperatur überschreitet, zu melden. Derartige Heißläufer treten in den meisten Fällen bei Gleitlagern, seltener bei Rollenlagern auf. Eine wesentliche Schwierigkeit beim Festlegen der anzuzeigenden Temperaturüberschreitung besteht darin, daß für Rollenlager eine höhere Betriebstemperatur zulässig ist als für Gleitlager.Procedure for detecting overheated railway axle bearings It is known, through stationary hot runner detectors on both sides of a track every axle box cap of rolling over railway wagons that has a maximum permissible temperature exceeds, to report. Such hot runners occur in most cases Plain bearings, less often with roller bearings. A major difficulty with Specifying the excess temperature to be displayed is that for roller bearings a higher operating temperature is permissible than for plain bearings.

Da der Wunsch besteht, heißlaufende Achslager möglichst frühzeitig zu erkennen, ist der Weg, die zulässige Betriebstemperatur der Rollenlager als Grenzwert zu benutzen, nicht gangbar. Auf der anderen Seite hätte die Wahl der niedrigeren Gleitlagergrenztemperatur zur Folge, daß durch Rollenlager, die zwar wärmer sind, die zulässige Temperatur aber noch nicht überschreiten, Fehlanzeigen ausgelöst werden, die dann zu unnötigen Verspätungen der Züge führen können.Since there is a desire to have the axle bearings running hot as early as possible To recognize is the way to limit the permissible operating temperature of the roller bearings to use, not feasible. On the other hand, the choice would have been the lower Plain bearing limit temperature means that roller bearings, which are warmer, but do not exceed the permissible temperature, incorrect displays are triggered, which can then lead to unnecessary delays in trains.

Zur Vermeidung dieses Nachteils wird erfindungsemä vorgeschlagen, daß die Meßergebnisse von g * ß b zwei auf beiden Seiten der Achse gleichzeitig messenden Geräten miteinander verglichen werden und die Differenz der Meßergebnisse zur Anzeige ausgewertet wird.To avoid this disadvantage, it is proposed according to the invention that the measurement results of g * ß b of two devices measuring simultaneously on both sides of the axis are compared with one another and the difference between the measurement results is evaluated for display purposes.

Die Erfindung geht dabei von der Erfahrung aus, claß einerseits das gleichzeitige Heißlaufen beider Lager einer Achse praktisch nicht vorkommt, andererseits beide Achslager bei ordnungsgemäßem Zustand etwa die gleiche Temperatur haben. Wird dagegen eine Temperaturdifferenz von mehr als z. B. 10° C zwischen beiden Lagern überschritten, so ist dies ein Zeichen dafür, daß eines der Lager die Tendenz hat, heißzulaufen. Beträgt die Temperaturdifferenz mehr als z. B. 15° C, so ist ein zu meldender Heißläufer vorhanden. Ein Vorteil des erfindungsgemäßen Verfahrens besteht einmal darin, daß bei dem Vergleich mit der Betriebstemperatur des anderen Lagers Rollenlager und Gleitlager gleich behandelt werden können. Ein weiterer Vorteil besteht darin, daß Einflüsse der Umgebungstemperatur weitgehend unwirksam sind. Befindet sich z. B. ein Zug längere "Zeit in einer sehr warmen Umgebung, passiert dann Tiber einen Meßplatz, an dem eine merklich geringere Limgebungstemperatur herrscht, so fallen bisher die :Meßergebnisse um diese Temperaturdifferenz zu hoch aus. Dies ist darauf zurückzuführen, daß nicht die absolute Temperatur der Achslager gemessen wird, sondern die Überschreitung einer Bezugstemperatur, die von der Außentemperatur abhängig ist und in den Meßgeräten selbsttätig eingestellt wird. Tritt andererseits ein Meßobjekt vor das Meßgerät mit einer Temperatur, die geringer ist als die Bezugstemperatur des Meßgerätes, d. h. dessen Innentemperatur, so bildet sich der Meßimpuls in entgegengesetzter Richtung aus und bleibt bei den bisherigen Geräten vollkommen wirkungslos. Nach dem vorgeschlagenen Verfahren gelangt aber die Differenz der Meßwerte beider Achslager zur Anzeige, so daß eine so arbeitende Anordnung auch dann noch voll betriebsbereit bleibt, wenn der hasten des Meßgerätes und damit dessen Innenraum z. B. durch Sonnenbestrahlung über die Umgebungstemperatur hinaus erwärmt wird.The invention is based on experience, on the one hand that Simultaneous overheating of both bearings on an axis practically does not occur, on the other hand Both axle bearings have approximately the same temperature when they are in good condition. Will on the other hand, a temperature difference of more than z. B. 10 ° C between the two bearings exceeded, this is a sign that one of the camps has a tendency overheating. If the temperature difference is more than z. B. 15 ° C, then one is closed reporting hot runner available. There is an advantage of the method according to the invention once in that when comparing with the operating temperature of the other bearing Roller bearings and plain bearings can be treated the same. Another advantage is that influences of the ambient temperature are largely ineffective. Is z. B. a train happens for a long time in a very warm environment then over a measuring point at which there is a noticeably lower limit temperature, so far the: measurement results are too high by this temperature difference. this is due to the fact that the absolute temperature of the axle bearings is not measured but the exceeding of a reference temperature, which is determined by the outside temperature is dependent and is automatically set in the measuring devices. On the other hand, occurs a measuring object in front of the measuring device with a temperature which is lower than the reference temperature of the measuring device, d. H. its internal temperature, the measuring pulse is formed in the opposite direction Direction and remains completely ineffective with the previous devices. To the proposed method, however, is the difference between the measured values of the two axle bearings for display, so that an arrangement working in this way is still fully operational remains when the rush of the measuring device and thus its interior z. B. by exposure to sunlight is heated above the ambient temperature.

Eine Anordnung zur Durchführung des erfindungsgemäßen Verfahrens ist im folgenden an Hand der Zeichnung beispielsweise erläutert: Die in den beiden Meßgeräten 1 und 2 erzeugten und verstärkten Meßimpulse 4 und 5 werden in das Gerät 6 geleitet, in dem sie durch Differenzbildung, beispielsweise additive Mischung unter Berücksichtigung des Vorzeichens, miteinander verglichen werden-Der Differenzimpuls 7 wird in einer Diskriminatorstufe 8 auf seine Höhe und Richtung untersucht und bei Überschreiten eines bestimmten einstellbaren Wertes in die Anzeige- und Meldeeinrichtung 9 ge geben. Während die Größe des Differenzimpulses 7 die Übertemperatur des einen Lagers über Betriebstemperatur des anderen Lagers anzeigt, gibt die Richtung des Impulses 7 an, welcher der Impulse 4 und 5 größer ist. Die Richtung des Impulses 7 enthält also die Aussage, ob die heißgelaufene Achse in Fahrtrichtung links oder rechts aufgetreten ist.An arrangement for carrying out the method according to the invention is Explained below with reference to the drawing, for example: The one in the two measuring devices 1 and 2 generated and amplified measuring pulses 4 and 5 are fed into the device 6, in which they are taken into account by forming the difference, for example additive mixing of the sign, are compared with each other - The difference pulse 7 is in a Discriminator level 8 examined for its height and direction and if exceeded a certain adjustable value in the display and reporting device 9 ge give. While the size of the differential pulse 7 the excess temperature of one bearing indicates the operating temperature of the other bearing indicates the direction of the pulse 7 indicates which of the pulses 4 and 5 is greater. The direction of the pulse 7 includes that is, the statement as to whether the overheated axle is on the left or right in the direction of travel occured.

Claims (2)

PATEN TA NS PRfICHE' 1. Verfahren zum Feststellen heißgelaufener Eisenbahnachslager für die je nach ihrer Ausbildun @g als Gleit- oder Rollenlager unterschiedliche, die normale Betriebstemperatur überschreitende Temperaturen zulässig sind, dadurch gekennzeichnet, daß die Meßergebnisse von zwei auf beiden Seiten der Achse gleichzeitig messenden Geräten miteinander verglichen werden und die Differenz der Meßergebnisse zur Anzeige ausgewertet wird. PATEN TA NS PRfICHE '1. Method for detecting overheated railway axle bearings for which, depending on their training as plain or roller bearings, different temperatures exceeding the normal operating temperature are permissible, characterized in that the measurement results from two measuring simultaneously on both sides of the axle Devices are compared with each other and the difference in the measurement results is evaluated for display. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Differenz der Meßergebnisse in einer oder mehreren Diskriminatorstufen nach Größe und Richtung ausgewertet wird.2. Procedure according to claim 1, characterized in that the difference between the measurement results in one or more discriminator stages is evaluated according to size and direction.
DES52822A 1957-03-22 1957-03-22 Procedure for the detection of overheated railway axle bearings Pending DE1031338B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DES52822A DE1031338B (en) 1957-03-22 1957-03-22 Procedure for the detection of overheated railway axle bearings
DES60984A DE1148252B (en) 1957-03-22 1958-12-15 Procedure for the detection of overheated railway axle bearings
DES65440A DE1148253B (en) 1957-03-22 1959-10-15 Procedure for the detection of overheated railway axle bearings
DES69199A DE1131254B (en) 1957-03-22 1960-07-01 Equipment in devices for detecting overheated railway axle bearings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES52822A DE1031338B (en) 1957-03-22 1957-03-22 Procedure for the detection of overheated railway axle bearings

Publications (1)

Publication Number Publication Date
DE1031338B true DE1031338B (en) 1958-06-04

Family

ID=7488945

Family Applications (1)

Application Number Title Priority Date Filing Date
DES52822A Pending DE1031338B (en) 1957-03-22 1957-03-22 Procedure for the detection of overheated railway axle bearings

Country Status (1)

Country Link
DE (1) DE1031338B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1114214B (en) * 1957-11-08 1961-09-28 Servo Corp Of America Signaling device for overheated axle bearings of railroad cars
US3059107A (en) * 1959-05-08 1962-10-16 Raymond N Mccool Railroad rolling stock bearing temperature monitor
US3108772A (en) * 1960-03-14 1963-10-29 Servo Corp Of America Hot-box detector alarm circuit
US3108773A (en) * 1960-05-16 1963-10-29 Servo Corp Of America Hotbox detector
US3183350A (en) * 1959-10-30 1965-05-11 Gen Signal Corp System for detecting hot elements on railway vehicles
US3183349A (en) * 1959-10-30 1965-05-11 Barnes Eng Co Hot box detector
US5381700A (en) * 1992-10-15 1995-01-17 Servo Corporation Of America Train analysis system enhancement having threshold adjustment means for unidentified wheels

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1114214B (en) * 1957-11-08 1961-09-28 Servo Corp Of America Signaling device for overheated axle bearings of railroad cars
US3059107A (en) * 1959-05-08 1962-10-16 Raymond N Mccool Railroad rolling stock bearing temperature monitor
US3183350A (en) * 1959-10-30 1965-05-11 Gen Signal Corp System for detecting hot elements on railway vehicles
US3183349A (en) * 1959-10-30 1965-05-11 Barnes Eng Co Hot box detector
US3108772A (en) * 1960-03-14 1963-10-29 Servo Corp Of America Hot-box detector alarm circuit
US3108773A (en) * 1960-05-16 1963-10-29 Servo Corp Of America Hotbox detector
US5381700A (en) * 1992-10-15 1995-01-17 Servo Corporation Of America Train analysis system enhancement having threshold adjustment means for unidentified wheels

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