Наукові вісті Далівського університету
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ISSN 2222-3428
Електронне наукове фахове видання
Рік заснування: 2010
Спеціальності :
073 – менеджмент, 122 – комп’ютерні науки, 131 – прикладна механіка, 132 – матеріалознавство, 133 – галузеве машинобудування, 161 – хімічні технології та інженерія, 273 – залізничний транспорт.
Офіційний сайт: http://nvdu.snu.edu.ua
Електронне наукове фахове видання
Рік заснування: 2010
Спеціальності :
073 – менеджмент, 122 – комп’ютерні науки, 131 – прикладна механіка, 132 – матеріалознавство, 133 – галузеве машинобудування, 161 – хімічні технології та інженерія, 273 – залізничний транспорт.
Офіційний сайт: http://nvdu.snu.edu.ua
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Browsing Наукові вісті Далівського університету by Author "Mogila, V."
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Item Safe Operation of Trains With a Device for Controlling the Position of the Wheelset on the Rail Track(СНУ ім. В. Даля, 2021) Mogila, V.; Kovtanets, M.; Sergіenko, O.; Kovtanets, T.; Могила, В.; Ковтанець, М.; Сергієнко, О.; Ковтанець, Т.Driving characteristics are the most important characteristics that determine the functional properties of passenger and freight cars. The driving performance indicators of cars mainly depend on their dynamic characteristics, but in each specific case, when it comes to compliance with traffic safety conditions, it is necessary to take into account the design features and the state of keeping the track. One of the main indicators of driving performance for the rolling stock of the track 1520 mm is the derailment stability factor of the wheelset, which determines the conditions for the safe movement of the car to provide for conditions under which there is a threat of derailment of the wheelsets. The design of the freight car bogie model 18-100 is considered and the reasons are investigated when the wheel can roll onto the rail head and the wheelset derails. That is, when the critical speed is reached, there is a direct threat to traffic safety. It has been established that in order to improve the smoothness of the movement of trains, reduce the intensive wear of the wheel flange and reduce the risk of wheels entering the rails, it is necessary to constantly monitor the position of the wheelset on the track. In the study of the multifactorial problem of a car derailment, the question of the optimal ratio of geometric dimensions in the wheel-rail pair was also taken into account. The ratio of geometric dimensions between the rail track and the wheel track determines the conditions for the movement of the crew in straight sections of the track and the conditions for their fitting into curved sections. Based on the results obtained, a design and technological solution is proposed - a device for monitoring the position of the wheelset on the track, which will monitor and timely assess the position of the wheelset on the track, as well as identify the mechanical risks of rolling stock derailment to improve traffic safety. The proposed approach to assessing the risk of rolling stock derailment is recommended to be used to quickly determine the significance of derailment factors and form reasonable requirements and real actions that ensure a guaranteed level of train traffic safety.Item To the Emergency Stop of the Train in Case of Derailment.(СНУ ім. В. Даля, 2021) Mogila, V.; Kovtanets, M.; Kovtanets, T.; Vakulik, M.The current state of the technical base of Ukrainian railways is characterized by the critical deterioration of the rolling stock. Locomotives and cars of worn-out types lose their initial running properties over time and cause an increased impact on the train structure, thus creating a direct threat to the safety of the trains. In order to maintain the existing rolling stock in a condition that ensures that it meets the requirements of operational safety, technical solutions are required, which are taken on the basis of a scientific substantiation of their effectiveness, first of all from the point of view of ensuring the safety of traffic. Prospective plans for renewal of the fleet of vehicles involves the supply of traction rolling stock (TRS) and cars with improved technical characteristics. Because of the lack of current system of admission to the operation of new rolling stock, which would meet international standards for the requirements of traffic safety, at the time of renewal of the appropriate regulatory framework. For this purpose it is necessary to develop methods and means of evaluation of the characteristics of the rolling stock with the ultimate goal of ensuring the safety of the trains. The work is devoted to the further development of methods and means of scientific research aimed at solving the scientific-applied problem of ensuring the technical operation of the vehicle fleet as modernized by scientifically grounded technical solutions, as well as the new generation. The work presents a technical solution for improvement of the device for emergency stop of the train when the car is derailed by the fact that as a spring two rod magnets are used, one of which is fixed in the body of the pneumatic cylinder and the other on the seismic mass, and the core permanent magnets are directed one on one by one poles, which will ensure increased reliability and speed of the device. The use of the proposed design will increase the reliability and speed of the device for emergency stop of the train when the car is derailed, which contributes to improving the safety of the trains.