Manufacturing Technology 2019, 19(3):391-396 | DOI: 10.21062/ujep/302.2019/a/1213-2489/MT/19/3/391

Analysis of a Tramcar Ride when Passing a Point Frog and when Entering Small Radius Arc by Specific Rail Geometry

Vladimír Hauser1, Kateryna Kravchenko1, Mária Loulová1, Olena Nozhenko2, Oleksij Fomin3
1 Faculty of Mechanical Engineering, Department of Transport and Handling Machines, University of Žilina. Univerzitná 8215/1, 010 26 Žilina, Slovak Republic
2 Volodymyr Dahl East Ukrainian National University, Tscentralny av. 59a, 93400 Severodonetsk, Ukraine
3 State University of Infrastructure and Technology, Department of cars and carriage facilities, Kyrylivska str. 9, 04071 Kiev, Ukraine

In urban railway environments, in many respects, the problem of tramcars passing small radius arches appears to be topical. In this regard, the authors proposed that the wheelsets should be complemented on the outer side of the wheels with a second tread of a lower radius, intended exclusively for ride in arches of the track with a radius which the conventional wheelsets cannot even theoretically pass without creep (subject of patent application a201701589). The complemented wheel tread enters into operation (or out of action) as a result of passing over a specially shaped rail located in the intersections before and behind the small radius arc. In this process, there is a change in the wheel-rail contact location - similar to what is commonly used when riding on a facing rail located in the immediate vicinity of the point frog. The paper deals with the comparison of these two cases based on a simulation analysis of vehicle ride in the calculation program.

Keywords: rail-wheel contact point relocation, point frog, double tread, small radius track
Grants and funding:

Cultural and Educational Grant Agency of the Ministry of Education of the Slovak Republic in project No. KEGA 077ŽU-4/2017: Modernization of the Vehicles and engines study program.
Project No. APVV-0842-11: Equivalent railway operation load simulator on the roller rig and VEGA No. 1/0558/18: Research of the interaction of a braked railway wheelset and track in simulated operational conditions of a vehicle running in a track on the test stand.

Published: June 1, 2019  Show citation

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Hauser V, Kravchenko K, Loulová M, Nozhenko O, Fomin O. Analysis of a Tramcar Ride when Passing a Point Frog and when Entering Small Radius Arc by Specific Rail Geometry. Manufacturing Technology. 2019;19(3):391-396. doi: 10.21062/ujep/302.2019/a/1213-2489/MT/19/3/391.
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