ON THE QUESTION REGARDING THE USE OF THREE-LINK ROAD TRAINS IN UKRAINE

Volodymyr  SAKHNO; Igor  MUROVANYI; Victor  POLYAKOV; Svitlana  SHARAI; Oleksandr  RAZBOINIKOV; Maksym  ROI

doi:10.36910/conf_avto.v1i1.1390

Volodymyr SAKHNO Doctor of Technical Science, Professor, Head of the Automobile Department, National Transport University, Kyiv, Ukraine https://orcid.org/0000-0002-5144-7131
Igor MUROVANYI Ph.D. in Engineering, Associate Professor, Dean of the Faculty of Transport and Mechanical Engineering, Lutsk National Technical University https://orcid.org/0000-0002-9749-980X
Victor POLYAKOV Ph.D. in Engineering, Associate Professor, Professor of the Automobile Department, National Transport University http://orcid.org/0000-0001-7042-3066
Svitlana SHARAI Ph.D. in Engineering, Associate Professor, Professor of the International Transport and Customs Control Department, National Transport University http://orcid.org/0000-0001-6568-4990
Oleksandr RAZBOINIKOV Ph.D. in Engineering, Associate Professor of the Automobile Department, National Transport University, Kyiv https://orcid.org/0000-0003-3024-0999
Maksym ROI Doctor of Philosophy, Associate Professor of the International Transport and Customs Control Department, National Transport University http://orcid.org/0000-0001-5788-4220

DOI: https://doi.org/10.36910/conf_avto.v1i1.1390

Keywords: transport system, technical and operational indicators, load capacity, three-link road train, tractor vehicle, semi-trailer, trailer, average speed, maneuverability

Abstract

Carrying out cargo transportation in intercity and international transportation by three-link road trains, compared to single vehicles, has a number of advantages, which ensure an increase in the productivity of rolling stock, a decrease in the cost of road transportation, a decrease in the total cost of cargo transportation, etc. Ukraine does not have its own production of tractor vehicles that can be used to work with trailers or semi-trailers with a large load capacity. Therefore, when choosing rolling stock for three-link road trains, its necessery to focusation on the products of leading automobile companies. It was established by researches that the generalizing indicator of traction-speed properties of a motor vehicle is the average speed of movement, because it affects its productivity and determines the efficiency of its use. In the work, this speed is determined according to the developed algorithm. It was established that the average speeds of road trains consisting of tractors of the N3 category (MAN TGA, Iveco Magirus, Scania R-series, DAF XF 105, Volvo FH16) with semi-trailers and O4 trailers of the KRONE brand in given road conditions differ little from each other. The maximum deviation of the average speed of movement, which has the largest value 22.99 m/s (for Volvo FH16+KRONE SDP-27), from the smallest value 21.05 m/s (for DAF XF 105+KRONE SDP-27), does not exceed 8.5%, i.e. further comparison of road trains should be fulfilled according to other criteria, in particular according to maneuverability when moving on a route. It is shown that the considered three-link road trains do not satisfy the requirements of Directive 2002/7/EC regarding maneuverability. For three-link road trains with unguided trailing links, the minimum external overall turning radius with an internal overall radius of 5.3 m varies from 12.63 m for a trailed road train to 14.9 m for a "B-Double" type road train. This is explained by the fact that the length of the three-link road train lies within 26.0...27.0 m. Therefore, for the practical use of three-link road trains in Ukraine, changes should be made both in the transport legislation and in the construction of road trains, in particular, the introduction of controlled trailer links into their structure and the determination of their placement in the road train.Keywords: transport system, technical and operational indicators, load capacity, three-link road train, tractor vehicle, semi-trailer, trailer, average speed, maneuverability.