Search results

In the article the comparative analysis of the dynamic loading of the floor of the car with different types of trucks in various modes of movement (loaded, empty). Commissioning of the new trucks is due to an increase in accidents in the operation of a gondola carts 18-100.

The analysis of the development of the wheels increased hardness on the example of certain manufacturers, and changing regulatory and technical documentation for production (GOST). A mathematical analysis of the comparison operation wheelsets normal hardness of the wheel pairs of high hardness, based on the receipt of freight wagons from production to unscheduled maintenance. For comparison methods were used: Cramer - Welch and Laplace function. The estimation of av-erage mileage of cars on different types of wheel sets of freight cars and production technology. Developed the basic advantages of high hardness wheelsets.

Purpose. Constructing a model for predicting a quantitative indicator of the pre-discharge state of the upper structure of the track based on a statistical analysis of the seasonal dynamics of this indicator. Forecasting involves identifying bottlenecks for timely corrective action. This approach allows you to refine the construction of algorithms of the functional risk assessment system on the infrastructure of Russian Railways for managing the technical condition of the railway track and safety and is considered as an element of digitalization of the risk assessment of traffic safety in the Railway Infrastructure Directorate. The development is carried out on the basis of accepted existing regulatory documents and classifiers of risk factors operating for the infrastructure management at Russian Railways. Methods. regression analysis, data validation, modeling based on regression analysis. Results. Dependence was identified and a forecast model of the dynamics of the number of deviations of the 2nd degree rail gauge geometry (GRK) was built based on the use of actual data from the automated system Path (APCS P) of Russian Railways. Testing of the approach was carried out on the basis of the Directorate of Infrastructure of the North Caucasus Railway. The identified dependence allows you to give a fairly accurate forecast of the state of traffic safety and the development of GRK deviations on the 2nd degree for use in practice, effective planning of material costs for planned preventive work and overhaul at linear enterprises, on a specific railway adopted for calculation and on the network of Russian Railways. Practical significance. The constructed model allows predicting the intensity of the risk factor on an objective basis of seasonal patterns, as well as the volume of control impacts on the current content of the upper track structure. The presence of such a forecast will make it possible to establish a relationship between the indicator of the dynamics of the number of deviations of the 2nd degree rail gauge geometry, including seasonal dynamics, and the risk factor, that is, the number of GRK deviations of the 3rd degree used in the risk assessment on the infrastructure. The result of this approach is the solution of a system of tasks that affect the values that reflect the level of risks, and as a result, effective management of financial flows for the maintenance of infrastructure, reduction and prevention of traffic safety incidents.

The main provisions of the methodological foundations of state management systems, technical operation, the general approach to the creation of the state of systems management techniques and methods of technical operation of destination mileage cars between depot repairs on them. Practical recommendations for the use of freight cars.

Substantiated the application of the probabilistic analysis of the break-even on the basis of a Monte Carlo method for the study of freight as a complex stochastic systems. Analysis was carried out on the basis of data of the Ulan-Bator railway.

A level crossing is a system of interaction between rail and road transport. Traffic safety at level crossings is a priority in Russia. Despite the annual reduction in the number of level crossings and the modernization of existing level crossings, the number of accidents at level crossings, including fatalities, remains at the significant level. The subject of research is the factors affecting the safety of level crossings. The aim of the work is to identify the factors with the greatest affecting the operation of a level crossings in the Russian Federation. The research used: a generalized block diagram of a level crossing, a block diagram of factors affecting the operation of a level crossing, a prior analysis by the evaluation, calculation of the Kendall coefficient for individual groups of factors, sorting of factors according to the average assessment of experts. The article provides data on the number of road traffic accidents at level crossings in the Russian Federation for the period from 2005 to 2020, and the number of level crossings of different categories for 2020. It has been hypothesized that the main cause of accidents at level crossings is violation of the rules by vehicle drivers. The block diagram of factors affecting the operation of a level crossing based on the generalized block diagram of a level crossing. Factors affecting the operation of a level crossing are divided into four groups. The Kendall coefficient was calculated for individual groups of factors. Evaluation of the factors affecting the operation of a level crossing was implemented, according to the average assessment of the experts. This hypothesis was confirmed. Using of the results of this analysis will reduce the number of accidents at level crossings. The results can be used both in the modernization of existing level crossings and in the design of new level crossings.

In article the solution of a task of the organization of operational monitoring of elements of the rolling stock on the basis of the methods of statistical definition of quality which were widely used in the analysis of defects of the current production is considered. The problem is solved on the example of carrying out control and diagnostic operations by results of which realization the conclusion about technical condition of elements of the rolling stock becomes. The approach offered in article allows to consider a posteriori information and by that to optimize the volume of the carried-out works. The received results can be used at the solution of a complex of tasks of decrease in resource intensity of system of repair and the maintenance of the rolling stock.

In the article the questions of increase of efficiency of structural subdivisions, members of the directorates of the West Siberian railway - branch of JSC "Russian Railways", such as infrastructure Directorate, Directorate railcar rolling stock and the Directorate of buildings and structures. The aim of this work is to identify structural units with the lowest energy efficiency indicators. This requires estimation of an indicator such as relative energy efficiency over a period of time equal to one calendar year, based on data of annual consumption of electric energy and annual volume of enterprise work. The article also outlines the main provisions of the concept analysis and monitoring the energy efficiency indicators of stationary objects of the railway transport, which will identify inefficient structural subdivisions with the use of control actions to reduce irrational consumption of energy resources. Calculation of the relative energy efficiency is one of the stages of this concept. The result is a received charts of the relative energy efficiency of structural subdivisions of the West Siberian railway which allows to make a comparison of this indicator. According to the results of comparison found that 10 of the 65 structural units have a low indicator of relative energy efficiency. This suggests the need for careful study the reasons of the low values of energy efficiency in these structural subdivisions and proposals the measures to eliminate this situation. The method and sequence of these activities proposes into the third and fourth stages of the concept. The establishment and subsequent application of a unified approach to the analysis and monitoring of energy efficiency indicators for all departments will increase the energy efficiency of the territorial branches of JSC "Russian Railways" and the holding company as whole.