Increasing the competitive ability of rail transport requires increasing the carrying capacity of Russian railways and reducing freight transportation costs. In its turn, the transportation capacity of Russian railways and transportation costs depend on the carrying capacity of the rolling stock. In order to increase the carrying capacity of the rolling stock significantly, it is necessary to increase the axle loads, enlarge carriage capacity to accommodate additional cargo, and reduce the weight of the rolling stock. Another problem is the forces affecting the side frames of bogies during the train movement. Overestimating the calculated effort leads to an increase in the loads on bogies, and reducing the effort leads to a threat to safety. Therefore, in order to make new carriages, the task is to create scientific and technical support and design new rolling stock. The study objective of this paper is to determine the optimized structure of repair and maintenance of innovative carriages based on an assessment of reliability indicators. In this paper, the following tasks are solved: the experience of operating innovative freight carriages with axle loads of 25 and 27 tons is considered, the wear rates of the main elements of bogies 18-9810 and 18-9855 are determined; the wear rate of wheelset crowns of freight carriages 12-9853 estimated; the optimal repair structure of bogies 18-9810 and 18-9855 is calculated; the optimal service life of the carriage is determined, taking into account its obsolescence.
Елена Круглова (Thu,) studied this question.