Wyniki wyszukiwania - BazTech

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Investigation of the Some Problems of Running Safety of Rolling Stock on the Ukrainian Railways

Domin R., Domin I., Cherniak G., Mostovych A., Konstantidi V., Greenday P.

Problemy Kolejnictwa

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2016

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Z. 172

7--17

EN

The results of the evaluation of the running safety conditions of railway vehicles are presented by means of computer simulation. The localization of possible damages of bearing structures of high-speed train is determined with the help of calculation of the strength characteristics and the method of non-destructive metallography. There is the information about the development of software and hardware complexes providing an instrumental assessment of the technical condition of railway vehicles.

PL

Artykuł przedstawia wyniki oceny warunków bezpieczeństwa ruchu pojazdów kolejowych przeprowadzonej metodami symulacji komputerowej. Umiejscowienie ewentualnych uszkodzeń w strukturach łożysk pociągów dużych prędkości określono obliczeniami wytrzymałości i metodą nieniszczącej metalografii. W artykule zamieszczono informację o stanie rozwoju oprogramowania i sprzętu do oceny stanu technicznego pojazdów kolejowych.

2

About diagnosing of impact of railway vehicles on the track

Cherniak G., Domin R., Nozhenko O., Mostovych A.

Prace Naukowe Politechniki Warszawskiej. Transport

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2016

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z. 112

59--69

EN

The report presents the results of the research aimed at justification of expediency of creating a system of experimental evaluation of indicators of impact of the rolling stock on the rails. The proposed system is based on the measurements of the vertical and horizontal accelerations of the rails under a movement of the rolling stock on the raił track section. This system for monitoring rail accelerations that are emerging from the impact of the rolling stock in the track structure is expected to be used to identify vehicles with high impact on the rails due to their design and technical condition of the running gears, including the defects of the wheels. Some results of the pilot testing of the proposed system for the monitoring of the accelerations, which were registered by passing the train consisting of five units, are presented. And the computational algorithm of the specialized pre-processing of the multidimensional signal that is recorded by this system is described. The offered algorithm in automatic mode allows dividing the signal on the separate segments that are associated with the particular wheelsof a running train for subsequent analysis of each segment. This algorithm does not reąuire input data about the train speed on the track section that is eąuipped with the monitoring system, about the number of wheelsets of the running train, and about the distances between them. These data are calculated as a result of the algorithm execution, sińce they are absent under the operating conditions of the proposed system.

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Investigation of the some problems of running safety of rolling stock on the Ukrainian railways

Domin R., Domin I., Cherniak G., Mostovych A., Konstantidi V., Gryndei P.

Archives of Transport

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2016

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Vol. 40, iss. 4

15--27

EN

The results of the evaluation of the running safety conditions of railway vehicles are presented by means of computer simulation. Analysis of the possible reasons for derailment by means of performance evaluation of rolling stock and track interaction are presented. The impact of the technical condition of the dampers on the running safety of passenger wagons is considered. The localization of possible damages of bearing structures of high-speed train is determined with the help of calculation of the strength characteristics and the method of non-destructive metallography. There is the information about the development of software and hardware complexes providing an instrumental assessment of the technical condition of railway vehicles. Portable device is proposed for measuring the static load of the wheels of the rolling stock units on the track. The work on creation of stationary devices for automatic wheels fault detection in order to reduce the time period from the appearance of the defect was conducted. The brainchild of the mobile system of controlling running tests and dynamic diagnostics of rolling stock was considered.