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

Study of methods of purification and neutralization of liquid fuels in the form of raw materials from minerals.

This article discusses the methods of purification of raw fuels, ie petroleum products from mineral salts using effective methods and the purpose of purification, as well as methods of neutralization after purificatio

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

ON THE DYNAMICS OF THE MOVEMENT CARRIAGE IN THE ACCELERATING GRABLE THE MARSHALLING YARD

The article presents the results of studies of the movement of the carriage on the slope hump (including brake position) when exposed to the forces of wind. Maintaining acceptable speed impacts and screening the Park can be achieved by changing the profiles of individual sections of the drain side hump or application of additional wagon retarders