Innovative wheel tread design aimed to tramcar-track interaction improvement when passing curves of a small radius

Abstract

Tramways in cities often ride in track curves of a small radius, which is followed by an increased effect of the vehicle on the track. In the rail - wheel contact often occurs creep in longitudinal as well as in lateral direction, which causes increase of riding resistance, wear in rail – wheel contact and noise operation. Exactly with the aim to reduce these undesirable effects we designed a tram bogie with steered wheelsets and with the double wheel tread. This inventions are registered by authors under Utility Model Nr. u201609015 and Patent Application Nr. a201701589. Description of proposed process of passing vehicle through strongly curved track is given in this paper. A comparison of creep velocities in rail - wheel contact results obtained by computer multibody simulations for a tram vehicle riding through a S-curve are presented. Purposefulness of proposed invention is investigated by constructing vehicle ride resistance dependence to the track curve radius.

Comparison of selected outputs of rail vehicle bogie variant solutions

“…It means lower running stability of the locomotive, mainly in case of running at higher running speeds. On the other hand, when the derailment quotient will be in the permissible values, higher yaw movement indicates lower wear of the wheel and rails in a curve [28][29][30][31]. However, the assessment of the running safety is the sole issue solved in the other contribution within this proceeding.…”

Research of the strength of the bearing structure of the flat wagon body from round pipes during transportation on the railway ferry

“…The active competition of railway transport with other modes of transport, both on the internal market of goods transportation and through international transport corridors, causes the necessity of providing the transport industry with wagons of the new generation. The construction of such wagons at the present stage of development should ensure that they can be used not only for railways, but also for international rail and water connections [1][2][3][4][5][6][7][8][9]. Therefore, the issue of designing and putting into operation of fundamentally new structures of wagons with improved technical and economic indicators and an expanded spectrum of functional capabilities is a topical issue.…”

“…The issue of designing the rolling stock for the carriage of heavy goods is considered in [4]. Dynamics and strength research was carried out using modern software tools such as ProMechanica and CosmosWorks.…”

Structural Analysis of a Modified Freight Wagon Bogie Frame

“…The bogie frame is the main carrying part of the bogie. Therefore it is not possible to perform such the essential modification of the frame without adequate analyses [17,18]. They come out and rely on strict requirements embedded in relevant standards and regulations.…”