Наука та прогрес транспорту. Вісник Дніпропетровського національного університету залізничного транспорту, 2013, вип. 4 (46) РУХОМИЙ СКЛАД ЗАЛІЗНИЦЬ І ТЯГА ПОЇЗДІВ Purpose. To analyze the results of study of dynamic parameters of the tank-car model 15-1900 and gondola car model 12-1905, equipped with the bogies model 18-1711 with axle loading of 25 ton and unified according to major parts and joints with the cars of previous generation. According to results of the study to conclude about the possibility of using bogies model 18-1711 as the running parts of the freight rolling stock of the new generation of 1520 mm track with increased axle loading. Methodology. The dynamic performance of the rolling stock running parts directly affects the safety of railway traffic. Experimental studies of the car dynamic qualities are an important step in the modernization of existing bogie constructions and in the creation of the new ones. These tests allow one to confirm the results of theoretical studies and to check the correctness of the constructive solutions. Findings. Basic results of dynamic studies are presented as the graphs of dynamic performance dependencies on the motion speed of the experimental train. Results show that the freight cars on the bogies model 18-1711 have satisfactory dynamic properties meeting current regulatory requirements. Originality. The dynamic characteristics of freight cars on bogies model 18-1711, which give a complete view of the car loading allow us to estimate the dependency of the car dynamic performance on the bogie design parameters. Practical value. The bogie model 18-1711 with axle loading 25 ton can be used as a freight car undercarriages of the new generation of 1520 mm track. (Print), ІSSN 2307-6666 (Online) Наука та прогрес транспорту. Вісник Дніпропетровського національного університету залізничного транспорту, 2013, вип. 4 (46) РУХОМИЙ СКЛАД ЗАЛІЗНИЦЬ І ТЯГА ПОЇЗДІВ © V. M. Bubnov, S. V. Myamlin, N. B. Mankevych, 2013 ISSN 2307-3489 (Print), ІSSN 2307-6666 (Online) Наука та прогрес транспорту. Вісник Дніпропетровського національного університету залізничного транспорту, 2013, вип. 4 (46) РУХОМИЙ СКЛАД ЗАЛІЗНИЦЬ І ТЯГА ПОЇЗДІВ © V. M. Bubnov, S. V. Myamlin, N. B. Mankevych, 2013 ISSN 2307-3489 (Print), ІSSN 2307-6666 (Online) Наука та прогрес транспорту. Вісник Дніпропетровського національного університету залізничного транспорту, 2013, вип. 4 (46) РУХОМИЙ СКЛАД ЗАЛІЗНИЦЬ І ТЯГА ПОЇЗДІВ © V. M. Bubnov, S. V. Myamlin, N. B. Mankevych, 2013 ISSN 2307-3489 (Print), ІSSN 2307-6666 (Online) Наука та прогрес транспорту. Вісник Дніпропетровського національного університету залізничного транспорту, 2013, вип. 4 (46) РУХОМИЙ СКЛАД ЗАЛІЗНИЦЬ І ТЯГА ПОЇЗДІВ © V. M. Bubnov, S. V. Myamlin, N. B. Mankevych, 2013 ISSN 2307-3489 (Print), ІSSN 2307-6666 (Online) Наука та прогрес транспорту. Вісник Дніпропетровського національного університету залізничного транспорту, 2013, вип. 4 (46) РУХОМИЙ СКЛАД ЗАЛІЗНИЦЬ І ТЯГА ПОЇЗДІВ © V. M. Bubnov, S. V. Myamlin, N. B. Mankevych, 2013новизна. Получе...

The cast parts of bogies for freight cars are most loaded elements, which are subject to special requirements in view of the fact that their technical condition directly affects the safety of traffic. The most stressed parts of bogies include side frames and bolster. The paper describes the results of the calculation, static and fatigue strength tests of bolster and side frame for freight car bogie model 18-1711 with axel load of 245 kN. Structural analysis was made based on allowable stress and the safety factor of fatigue strength. Analysis of the results of the calculation, static and fatigue testing results proved that design of side frame and bolster comply with all normative documents. The result of the complex theoretical and experimental investigations have provided confirmation of the selected constructive solutions bolster and side frame for bogie with a axle load 245 kN, which confirms the possibility of their use in the manufacture of freight cars.

REPAIR TECHNOLOGY IMPROVEMENT OF SPECIALIZED FREIGHT CARS Purpose. The volume of cargo transportation demands the introduction of a new generation of cars that would be able to provide all the needs of carriers. But this is impossible without the implementation of renovation repair facilities with the introduction of new technologies and modernization of the repair process. Repair of rolling stock is a key factor that must proceed with the establishment of new cars, as not all of the inventions may be repaired in car-repair depots, most of which are obsolete. The purpose is to analyze the possibility of increasing the efficiency of the repair process by introducing new repair technologies or improving the existing ones. It will improve not only the quality of the repair, but also its rate. Methodology. Works on improving the designs of freight cars are held by many design organizations in almost all industrialized countries. It makes repair organizations (depots and car-repair plants) to upgrade the repair process. Achievements of-this goal is possible by improving the technology renovation and reorganization through the use of flexible flow technologies, which to date are the most effective in the repair of rolling stock. Findings. When performing the analysis it was determined that there are different designs of cars. More of cars are all-purpose and their repair does not cause difficulties for car-repair business. However, the number of specialized cars is also significant, and the technology of their repair should be improved. One of the reasons is that many models, such as tank wagons for the carriage of sulfur, are intended for the carriage of dangerous goods and their failure at the time of motion is not permitted. Originality. Firstly the authors have defined direction at improving technologies of repair specialized cars. Practical value. Actual improvement in the construction of cars is to improve the existing repair facilities. In addition, the repair technology using nowadays when repairing cars is obsolete and requires improvement. Considered organization of the repair process is of practical value and can be used both in-time development of new repair facilities and the modernization of existing ones.

An analysis of main engineering designs for constructions of tank cars for transportation of light oil products is presented in the paper. A special attention is paid to the connection unit of boiler and wagon frame.

The work is devoted to experimental researches of pre-production model of swing-joint platform. An amount and order of conducting the preliminary tests, combinations of the test loadings are considered. The locations of setting the sensors as well as the locations of registered maximum equivalent tensions are selected. The convergence of results of tests with the results of theoretical calculations is analyzed.