INVESTIGATION OF CONTACT DETERMINATION PARAMETERS INFLUENCE ON THE QUALITY INDICATORS OF STRUCTURE
Journal Title: Вчені записки Таврійського національного університету імені В. І. Вернадського. Серія: Технічні науки - Year 2018, Vol 29, Issue 6
Abstract
The purpose of the work is to determine the level of influence of the contact pendants parameters on the quality indicators of the screw-picking. The theoretical and experimental methods of research were used to achieve the set goal and to solve the problems in the work. The paper considers existing approaches of studying and assessing the contact pendants interaction with current collectors and presents the results of field experiments, which formed the basis for constructing mathematical models. On the developed models of contact pendants interaction with current collectors, simulation was carried out. The main directions of improvement of the contact suspension design for the conformity to the conditions of introduction the high-speed electric-engine composition were determined. The current distribution in the wires of the contact network is investigated and the influence of the number of current-carrying strings in the span on the current distribution is determined. On the basis of the obtained modeling results, ways of improving the design parameters of the contact suspension are proposed for improving the quality of the screw capability. For the first time, the dependencies of the mechanical characteristics of high-speed contact suspensions on the pressure of the current collector were determined, which allow more accurately determine the quality parameters of the snap-in, namely the elasticity of the contact wire and its pressing over the length of the run. The method for calculating the interaction of the contact suspension with the current collector in the steady state, which is aimed at determining the pressure and elasticity of the contact wire, taking into account the structural features of the contact pendants and their electrical parameters, has been further developed. The results obtained in the work allow to more accurately determine the quality of screw-picking quality for high-speed contact pins of electrified railways, taking into account their design features. The basic parameters of contact pendants are determined which deteriorate quality of screw quality and suggested directions of their leveling. The specified allows to achieve minimization of damage to the elements of the contact network and current collectors when introducing high-speed traffic on the electrified railways of Ukraine.
Authors and Affiliations
Д. О. Босий, А. В. Антонов, Є. М. Косарєв, В. С. Михайлов
Keywords
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