Standard UIC B126/DT429-1ed. 1.8.2013 preview

UIC B126/DT429-1ed.

Braking Questions - Comparison of bench and in-line drag braking test results

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STANDARD published on 1.8.2013


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The information about the standard:

Designation standards: UIC B126/DT429-1ed.
Publication date standards: 1.8.2013
SKU: NS-1190175
The number of pages: 92
Approximate weight : 307 g (0.68 lbs)
Country: International technical standard
Category: Technical standards UIC

Annotation of standard text UIC B126/DT429-1ed. :

This report compares thermal stresses (measured on the running surface of wagon wheels) during in-line tests using K and LL type brake blocks on slopes on the Saint Gothard and Tauern lines, with results obtained from bench tests. Various braking modes taken from UIC Leaflet 541-1 were applied for the bench tests, in addition to braking modes based on those used on slopes the during in-line tests (saw-tooth braking, constant pressing force and constant power). Other tests were carried out to simulate blocked brakes, which were compared with results from in-line tests on a test loop line and validated.

All forces being equal, the temperatures obtained both on the test bench and in-line with the same material, were very close.

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Fragen des Bremswesens - Vergleich der Dauerbremsmethode am Prüfstand mit den Ergebnissen der Streckenversuche|

Der vorliegende Bericht vergleicht die bei den Streckenversuchen mit K- und LL-Sohlen auf dem St. Gotthard und den Tauern aufgetretenen thermischen Beanspruchungen (an den Laufflächen der Güterwagen gemessene Temperatur) mit den Ergebnissen der Prüfstandsversuche. Die Prüfstandsversuche umfassen einerseits die Dauerbremsungen gem. UIC-Merkblatt Nr. 541-4 und Untersuchungsfahrten analog zu den Gefällefahrten (Sägezahnbremsungen, konstante Anpresskraft und konstante Leistung) sowie andererseits die Bremsstörungsversuche mit Vergleich und die Validierung auf dem Versuchsring.

Bei gleicher Beanspruchung gibt es lediglich geringe Unterschiede zwischen den Ergebnissen auf der Strecke und auf dem Prüfstand.

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