ANALYSIS OF THE DESIGN OF DOMESTIC UNDERGROUND CARRIAGE BOGIES IN THE CONTEXT OF MODERN TRENDS IN THE DEVELOPMENT OF CARRIAGE BUILDING

Abstract

DOI:  https://doi.org/10.26565/2079-1747-2025-36-03

The article deals with the design of bogies for electric rolling stock cars operated on domestic subways. The main components of bogies of different types are considered: models of the old design, which are used in the Kharkiv subway, and more modern ones, which are produced at PJSC ‘Kryukiv Carriage Works’ and are used on the cars of the capital's subway. According to the analysis, the design features of modern trolleys were identified, including the use of a sheet metal frame, which increased the strength and reliability of the structure. An important step forward was the introduction of an asynchronous traction drive, which provides better traction characteristics and energy efficiency. Safety systems have been improved by the use of a disc brake, and passenger comfort has been greatly enhanced by the use of air springs in the central suspension.

The paper also analyses various technical solutions used in the design of bogies in foreign subways, primarily those that differ from the classical vision of the rolling stock chassis, such as the use of non-traditional materials, such as carbon fibre, in the bogie's bearing structure or the use of wheels with rubber tyres instead of traditional steel ones.

The article compares the main operational characteristics of domestic bogies and a foreign analogue of Siemens, which has a similar design. It is pointed out that the design of modern bogies is promising in terms of improving traffic safety, efficiency and comfort of transportation, as well as the need to develop domestic car building.