Search results

In article results of making design for system of the dangerous wastes transport safety by railway is considered. Fundamental elements of safety system are discussed. Recommendations on formation of the dangerous wastes transport safety program are shown.

Analysis of failures bogie side frames of freight cars in the network of JSC «Russian Railways» for the period from 2006 to 2013. Disadvantages of the well-known constructions of trucks of the car of model 18-100. Mathematical modeling of movement of a wheel pair bogie 18-100, set the negative impact of the spread of the values of structural parameters of the chassis of the car on the indicators of its dynamic qualities and driving safety.

The article deals with the possibility of applying an unconditional diagnostic algorithm, applied to a specific problem of searching for damage in a station's tonal track circuit. The aim of the work is to substantiate the possibility of applying diagnostic algorithms, in order to reduce the time of search and repair of damages. The order of compiling the diagnostic algorithm is shown, conditional probabilities, diagnostic weights, private and general diagnostic values are calculated. On the basis of the calculations performed, an unconditional algorithm for diagnosing the tonal track circuit was compiled. The results obtained in the article can be used for technical maintenance of automation systems of operating railways.

In the article presents the network model of processes of planning and the accounting of transportations, and also processes of execution of documentation at freight dispatch in the intra republican message of the railroads of Uzbekistan by means of composite document management. Composite document management provides the movements of documents in paper and in electronic medium, and also their composite decisions. The special the automated system (AS) will support processes of electronic document management and to make the reporting in the automated mode. For mathematical modeling of process of document management in this work it is used methods of network planning and management. It is described characteristics of the offered technology of planning and the accounting of transportations, and also execution of carriage documents at freight dispatch in the intra republican. It is applied, the PERT method for calculation of accidental temporary characteristics of works. Temporary characteristics of events are determined by a method of a critical way. Tables with the sequence of works with the indication of optimistic, probabilistic and pessimistic assessment of duration of performance, and also with results of calculations for determination of average time and dispersion are made. The network schedule of works, in compliance of technology of document management by means of which terms of performance of work are evaluated, entering document management process is made. Durations of critical and noncritical ways are determined. The results received in article confirm efficiency of the offered technology of document management. Use of this technology providing filling of documents electronically and fixing with the digital signature (DS), it is expected to lower expenses of time of consignors and the railroad, to increase productivity of works and quality of the provided services, to create the centralized information base.

Today the most part of world commodity and cash flows is concentrated in the Pacific Rim. The strategy of development for the Far East is based on increase in export to Asia-Pacific countries and also growth of volume of foreign investments. In September, 2018 in Vladivostok at the IV East economic forum the VaninoTransUgol company will submit the construction project in seaport Vanino of transport transshipment facility with transshipment capacities to 40 million tons. In 2017 the volume of transfer of freights in Vanino port was 7,2 million tons, the seaport continues to increase the refinery capacities, but the insufficient capacity of infrastructure of railway transport is the limiting element of development of the transport hub. Construction of the new terminal for transfer of coal will demand corresponding development of railway infrastructure of the Vanino transport hub. In the conditions of increase in volumes of transfer of freights, it is necessary to resolve an issue of the extreme number of cars which can be processed in "the railway station-seaport" system. The author has developed the program of imitating modeling which allows to determine the capacity of a railway component of the transport hub at the existing hardware and in the conditions of increase in loading of "the station-the port" system. In this work results of imitating modeling of work of the Vanino transport hub at increase in unloading of coal by 40% up to 280 cars a day are presented. The working park of the Vanino station has made 305 cars and continued to increase, ways of the station have been filled with cars waiting for operations. Two groups of possible ways of increase in capacity of the transport hub - infrastructure and technology solutions are presented. In the conditions of limitation of territorial development, construction of additional railway infrastructure becomes impossible therefore it is possible to increase the capacity of the transport hub due to change of specialization of moorings of port. It will allow to reduce the number of the cars which are on the ways of the station waiting for unloading and to accelerate processing of the rolling stock. After re-equipment of moorings of port, the working park of the Vanino station has made 230 cars and the capacity reserve for reception of an additional traffic volume has appeared. By means of this program of imitating modeling it is necessary to analyse work of key transport hubs of the Far East for definition of the maximum traffic volume at which transport hubs will steadily function, in the optimum mode.

Subject of research - the evolution of logistics objects (LO). The purpose of the research is the development of methods to study the LO in their development, taking into account changes that they execute logistics functions. Research methodology based on set theory, graph theory, theory of transport systems, general systems theory and the author's methodology terminalistics. The authors studied the most significant for the evolution of the LO characteristics and factors influencing them. The condition of LO is a set of indicators identifying the overall hierarchical system (defining its type) and characterizes his work in general. This study describes an evolutionary-functional approach. This approach is reflecting the characteristics of the development of the functional arsenal of LO and its role in the system of delivery. Its essence is also presented graphically. The author has developed a classification of types of LO, given their evolution and hierarchy. The basis of the typology of LO is the LO evolution of the implemented logistic services. Also this study describes the stages of functional development of the LO. A parametric description of the LO and the conceptual framework taking into account the classification and evolution of the LO present in this study. Еhe author proposes the methodology of research LO on the basis of the evolution of the network states. The evolutionary-functional theory is reflected in the form of a "rhombus evolutionary and functional development of the LO." This theoretical and graphical model evolutionary network conditions may be applicable: 1) in determining the terms of the best mode of operation LO for planning of objects of terminal and warehouse infrastructure, 2) the operation and development of terminal and warehouse infrastructure; 3) as an evaluation tool to identify bottlenecks and system improvement of all aspects of the work LO. The results of the study can be used in the design, planning, development and evaluation of objects of terminal and warehouse infrastructure of Russian Railways.

The article deals with the possibility of applying a conditional diagnostic algorithm, applied to a specific problem of searching for damage in a station's tonal track circuit. The aim of the work is to substantiate the possibility of applying diagnostic algorithms, in order to reduce the time of search and repair of damages. The order of compiling the diagnostic algorithm is shown, conditional probabilities, diagnostic weights, private and general diagnostic values are calculated. On the basis of the calculations performed, a conditional algorithm for diagnosing the tonal track circuit was compiled. The advantages of the conditional diagnostic algorithm in relation to the unconditional algorithm are demonstrated. The results obtained in the article can be used for technical maintenance of automation systems of operating railways.