Production estimate of technological operations duration in railway transport

Purpose: To stabilize the departure of trains on schedule, to do this, to justify the size of the factor of unevenness taken into account when normalizing the duration of the main technological operations with the compositions of container block trains for departure at the junction stations. Methods: From the existing automated systems, statistical data were collected and processed using MS Excel software, and the mathematical expectation, standard deviation, and dispersion of the duration of operations with the block train at the departure station were determined. The hypothesis about the normal law of distribution of the random variable of the duration of each of the main operations at the station was tested by the “chi-square” goodness-of-fit test. Results: The distribution of the random variable of the duration of operations at the station is described using the normal distribution law; a technological schedule for processing the composition of the container block train on the tracks of the railway junction station was built. Practical significance: Practical recommendations will reduce the technological norms for the processing time of a container block train on the tracks of a railway junction station. As a result, the processing time for block trains on departure on the station tracks will be reduced from 154 minutes to 132 minutes, which will save time by 22 minutes

Creation of transport and logistics clusters on railway networks

The development of logistics terminals and their placement on the railway network, which involves their integration into transport and logistics clusters, will significantly reduce logistics costs, thanks to the optimal technology for the movement of goods, and also contributes to active import substitution and the level of growth in the competitiveness of goods and services. Clustering, which is being given great attention by the Government of the country today, will allow solving some issues of territorial balance of production concentration, increasing the share of high-tech industries, avoiding dependence on trade in resources, increasing the added value of goods, increasing economic growth rates. Modern Uzbekistan has huge transport potential and unique opportunities to meet the needs of the country in the movement of both goods and passengers in all directions by all possible modes of transport through the use of available transit resources. The article analyzes the sectoral structure of the industry of Uzbekistan, shows the existing clusters of the agricultural sector of the republic. The methods of assessing the level of cluster development in the context of the regions of Uzbekistan are described. Paired correlation analysis was used to determine the presence and type of relationship between the studied factors. As a result, the regions of Uzbekistan in terms of the placement of freight infrastructure on railways in order to create potential transport and logistic clusters were grouped depending on the indicators of socio-economic and infrastructural development

Analysis and Assessment of Power Efficiency of Special Self - Propelled Railway Rolling Stock

Electric power installation of a special self-propelled rolling stock used in the power supply divisions is considered in the paper; the expediency of its use for the analysis of the main energy indices, in particular, the evaluation of the efficiency of electro-hydro-mechanical units at separate and joint operation, is shown. To assess the energy efficiency, an integrated efficiency factor has been proposed that allows accounting the energy parameters of electrical installations operating in various modes. Recommendations have been given to increase the power factor of electrical installations

Численная модель колебаний несущего каркаса рамы кузова аварийно-восстановительной автомотрисы с переменными жесткостными и массовыми параметрами

This article covers the use of analytical technique of solutions for flexural and longitudinal oscillations of the bearing framework of a railcar body frame in the form of an elastic core of variable section with a variable weight, flexural and longitudinal rigidity. The calculation is performed for the modernization of the body frame of emergency and repair rail service car, taking into account the variability of section, mass, longitudinal and bending stiffness along the length to prolong the service life of their useful operationВ данной статье представлен алгоритм расчета для моделирования напряженно- деформированного состояния несущего каркаса рамы кузова аварийно-восстановительной автомотрисы; приведены результаты численного исследования по напряженно- деформированному состоянию несущего каркаса рамы кузова аварийно-восстановительной автомотрисы с учетом переменности сечения, массы, изгибной и продольной жесткости по её длине; дается обоснование выбора диагностических параметров для оценки динамической прочности, надежности и прогнозируемого ресурса работы несущего каркаса рамы кузова аварийно-восстановительной автомотрис

Численная модель колебаний несущего каркаса рамы кузова аварийно-восстановительной автомотрисы с переменными жесткостными и массовыми параметрами

This article covers the use of analytical technique of solutions for flexural and longitudinal oscillations of the bearing framework of a railcar body frame in the form of an elastic core of variable section with a variable weight, flexural and longitudinal rigidity. The calculation is performed for the modernization of the body frame of emergency and repair rail service car, taking into account the variability of section, mass, longitudinal and bending stiffness along the length to prolong the service life of their useful operationВ данной статье представлен алгоритм расчета для моделирования напряженно- деформированного состояния несущего каркаса рамы кузова аварийно-восстановительной автомотрисы; приведены результаты численного исследования по напряженно- деформированному состоянию несущего каркаса рамы кузова аварийно-восстановительной автомотрисы с учетом переменности сечения, массы, изгибной и продольной жесткости по её длине; дается обоснование выбора диагностических параметров для оценки динамической прочности, надежности и прогнозируемого ресурса работы несущего каркаса рамы кузова аварийно-восстановительной автомотрис

Dynamics of development of cargo transportation in Uzbekistan

The structure of the economic development of railway transport in Uzbekistan is analyzed and evaluated in the article. An assessment of the dynamics of freight traffic development in Uzbekistan is given on the basis of GDP data. The volume of transport services provided and the use of modes of transport in terms of the volume of products shipped is considered. According to the dynamics of the growth of cargo transportation, a decrease in growth in 2020 was revealed due to the pandemic, but in general, there is a steady growth rate. Along with the ongoing operations on the renovation and reconstruction of railway tracks, it is necessary to take measures to optimize the entire chain of organizing cargo transportation through containerization, i.e. application of block train technology

Analysis of the Market Development of Transport and Cargo-Carrying Services in The Republic of Uzbekistan

The research in this article is aimed at finding ways to increase the competitiveness of railway transport. The results of the study will further reveal the possibilities of railway networks to ensure the delivery, in the shortest time, of large volumes of cargo to domestic and foreign markets, the uninterrupted functioning of the necessary infrastructure for placing cargo facilities on the railway network. The object of research is the state of the transport system, which plays a decisive role in commerce