scholarly journals Specialized railway carriage for grain

2021 ◽  
Vol 264 ◽  
pp. 05059
Author(s):  
Yadgor Ruzmetov ◽  
Dilmira Valieva
Keyword(s):  
Traffic Safety ◽  
Metal Structure ◽  
Operating Costs ◽  
Rolling Stock ◽  
Railway Transport ◽  
Railway Network ◽  
Transportation Process ◽  
Contractual Agreements ◽  
The Republic ◽  
Bearing Structure

This article deals with the worked out specialized railway carriage for grain for the transportation process throughout the Republic of Uzbekistan railway network, with the unconditional provision of train traffic safety, which is one of the most important components of the rolling stock of railway transport. The features of the load-bearing structure of the railway carriage for grain are that it is made based on a four-axle platform and a universal container. Evaluation of the strength of the metal structure of the grain car was carried out following the requirements of the “Standards for the calculation and design of new and modernized cars of the railways of the Ministry of Railways with a gauge of 1520 mm (non-self-propelled)”. Based on theoretical studies, it was justified that the design of a railway carriage for grain with a capacity of 83.6 m3 and a carrying capacity of 65 tons. For the first test of a railway carriage for grain, the number 43925684 was assigned. The proposed new grain carriage will reduce operating costs and reduce rolling stock downtime during reloading operations. It will create the possibility of fulfilling contractual agreements drawn up for small volumes of traffic within the country.

scholarly journals Commissioning of the freight wagons with increased axle loads is a guarantee of the further development of railways of the Republic of Uzbekistan

2021 ◽  
Vol 264 ◽  
pp. 05049
Author(s):  
Rustam Rahimov ◽  
Shokhrukh Sultonov ◽  
Otabek Nigmatov ◽  
Meirkhan Baltaev ◽  
Vasila Ergasheva ◽  
...  
Keyword(s):  
Operating Costs ◽  
Rolling Stock ◽  
Axial Loads ◽  
Railway Network ◽  
Freight Traffic ◽  
Standard Values ◽  
Axle Loads ◽  
The Republic ◽  
Further Development ◽  
Freight Wagons

The aim of the study is to select rational axle loads of the rolling stock and establish the conditions for their circulation on the railways of the Republic of Uzbekistan. In this work, research has been carried out to assess the indicators of the stress-strain state of rail track elements from the action of the rolling stock with various axial loads. The dynamic loads from the rolling stock wheel on the rail, tensile stresses at the edges of the rail foot, in wooden sleepers (rubber under-rail pads on reinforced concrete) under the linings, in the ballast under the sleeper, as well as stresses at the main area of the roadbed, were determined. The obtained results of studies on the determination and assessment of the loading of the elements of the permanent way and sub-grade bed under the condition of not exceeding their standard values made it possible to establish the permissible speeds of movement of freight wagons with increased axle loads of 25 and 27 tf on the railways of the Republic of Uzbekistan, depending on the design of the track and the thickness of the ballast layer, which will increase the running and carrying capacity of the most loaded sections of the railway network, reduce operating costs, increase the volume of freight traffic by rail, which will create conditions for the further development of national rail transport in the implementation of export and transit potential.

Coordination of technology of railway operation of the Republic of Tajikistan and organization of railways in international traffic

2018 ◽  
Vol 77 (4) ◽  
pp. 211-217 ◽  
Author(s):  
P. N. Pulatov
Keyword(s):  
Rolling Stock ◽  
Railway Transport ◽  
Transport Services ◽  
Railway Infrastructure ◽  
External Conditions ◽  
The Republic ◽  
Railway Operation ◽  
Required Quality

Current geopolitical and economic conditions for the functioning of railway transport in most post-Soviet states are such that it is extremely difficult to provide required quality of transport services and break-even operations at high expenses for maintaining the railway infrastructure and rolling stock. Dynamics of transportation of the Tajik Railway (TSR) is shown, which displays that most of its sections are classified as low-intensity ones. The paper proposes methodical principles, setting and qualitative analysis of the task of rationalization of operational work and organization of car flows for international transportation, taking into account the specifics of the Tajik Railway. There is a problem of complex maintenance of the efficiency of operational work in modern conditions based on the synthesis of the tasks of self-management (rational internal operational technology of the Tajik Railway) and coordination tasks (technological interaction with railway administrations of other states). Author substantiated the necessity of solving this problem. Proposed classification of technological restrictions and controlled variables in the performance of transport takes into account methods for changing external conditions for the functioning of the railway landfill and methods for increasing internal efficiency of its operation. The search for the solution of the problem involves direct search of variants along its ordered set with clipping of groups of variants that do not correspond to constraints, with the subsequent finding of compromise control over a set of effective alternatives.

scholarly journals Results of comprehensive studies conducted by the Central Research Institute (VNIIZhT) and construction work of the Ministry of Railways (RZD) to increase the loading gauge of freight and passenger rolling stock on the railways of Russian Federation

2019 ◽  
Vol 78 (1) ◽  
pp. 19-26
Author(s):  
Yu. M. Lazarenko ◽  
D. N. Arshintsev ◽  
O. N. Nazarov ◽  
Yu. S. Kireeva
Keyword(s):  
Economic Effect ◽  
Central Research Institute ◽  
Rolling Stock ◽  
Central Research ◽  
Railway Transport ◽  
Passenger Cars ◽  
Railway Network ◽  
Industrial Enterprises ◽  
Railway Rolling Stock ◽  
Research Institute

The article presents the content and results of a set of studies on the scientific and methodological support for the modernization of structures and devices built according to the old loading gauge standards or its expired durability, the entire 1520 (1524) mm gauge railway network under the loading gauge standard T for rolling stock, allowing to increase axle and running loads of cars and due to this — the mass of trains, as well as solve the global problem that arose in the middle of the last century to increase the efficiency of the most important branch of Russia — railway transport. Variants of increased loading gauges were developed (Тпр for any rolling stock, Тц for tanks, Та — for electric rolling stock, Тб — for passenger cars), which were included in the GOST 9238 – 83 “Loading gauges of railway rolling stock and structure clearance” and Ministry of railways instructions (no. TsP/4425 — for clearance of structures; no. TsV/4422 — for loading gauge of the rolling stock and no. TsD/4172 — for transportation of oversized and heavy (nonstandard) freights), as well as zonal and flatcars loading gauges. Scientific and methodological studies carried out by the institute during the half-century period (mid-XX — early XXI) identified structures and devices that limit the use of rolling stock of loading standard T, its elimination during 1982 – 2005, as well as transition of industrial enterprises to the production of new freight and passenger cars of increased loading standards Тпр and Та, developed by the Institute. This identification was made on the basis of the overall classification of all railway infrastructure and access railroads of the former USSR. New regulatory framework for railway rolling stock loading gauges and structure clearance (GOST 9238 – 2013) was developed based on a global survey of actual dimensions of all structures and infrastructure devices of the 1520 (1524) mm gauge railways (area 1520). Railway Research Institute of the Ministry of Railway Transport (currently, JSC “VNIIZhT”) made scientific and methodological support for the modernization of infrastructure objects, exhausted its life span for the 100-year period of operation. Scientific and methodological support carried out by the Institute allowed the creation and operation of rolling stock with an increased loading gauge standard Тпр: for freight traffic — with increased running loads by 2 ton/m or more compared to European railways; for passenger traffic — more comfortable and 39 % more spacious double-deck compartment cars. Increasing the loading gauge of the rolling stock provides increased efficiency of rail transport by increasing productivity, reducing the required fleet of cars for the transportation of equal volumes as well as operating costs. At the same time achieved annual total economic effect amounts to 2,205 billion rubles. Introduction of the flatcar loading gauge contributes to the organization of transportation of heavy trucks by rail and, therefore, improve the environmental situation. 

MODERN ROLLING COMPOSITION OF RAILWAY TRANSPORT. MAIN TRENDS IN TRANSPORT ENGINEERING

2020 ◽  
Vol 2 (3) ◽  
pp. 47-52
Author(s):  
A. G. YEROYAN ◽  
Keyword(s):  
Rolling Stock ◽  
Rail Transportation ◽  
Railway Transport ◽  
Large Cities ◽  
Technical Parameters ◽  
Transportation Process ◽  
Cargo Transportation ◽  
Increasing Demand ◽  
Modern Rolling

The article explores the main technical parameters of modern electric locomotives in Russia. The renewal of the locomotive complex directly affects the quality of the transportation process. Due to the growing volume of cargo transportation, the intensity of passenger train traffic between large cities, the growth of transit container traffic, the existing dilapidated rolling stock needs updating to be ready for the annually increasing demand for rail transportation.

scholarly journals Research into the Strength of an Open Wagon with Double Sidewalls Filled with Aluminium Foam

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3420
Author(s):  
Oleksij Fomin ◽  
Mykola Gorbunov ◽  
Juraj Gerlici ◽  
Glib Vatulia ◽  
Alyona Lovska ◽  
...  
Keyword(s):  
Aluminium Foam ◽  
Strength Calculation ◽  
Rolling Stock ◽  
Railway Transport ◽  
Middle Section ◽  
Dynamic Stresses ◽  
Critical Oscillation ◽  
Oscillation Frequencies ◽  
Operational Modes ◽  
Bearing Structure

The research is concerned with the use of double walls filled with aluminium foam for an open wagon in order to decrease the dynamic stresses during the operational modes. The research presents the strength calculation for the bearing structure of an open wagon with consideration of the engineering solutions proposed. It was found that the maximum equivalent stresses appeared in the bottom section of the centre sill behind the back support; they amounted to about 315 MPa and did not exceed the allowable values. The maximum displacements were detected in the middle section of the centre sill and amounted to 9.6 mm. The maximum deformations were 1.17 × 10−2. The research also presents the strength calculation for a weld joint in the maximum loaded zones of the bearing structure of an open wagon and gives the results of a modal analysis of the bearing structure of the improved open wagon. It was found that the critical oscillation frequencies did not exceed the allowable values. The results of the research may be useful for those who are concerned about designing innovative rolling stock units and improving the operational efficiency of railway transport.

scholarly journals Development of new polymer composite materials for the flooring of rail carriage

2020 ◽  
Vol 9 (2) ◽  
pp. 378
Author(s):  
Zaynitdinova Olmos Irikovich ◽  
Rahimov Rustam Vyacheslavovich ◽  
Waail Mahmod Lafta ◽  
Ruzmetov Yadgor Ozodovich
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
Polymer Composite Materials ◽  
Operating Costs ◽  
Rolling Stock ◽  
Railway Transport ◽  
Process Automation ◽  
New Material ◽  
The Subject ◽  
Railway Rolling Stock

The subject of improving the competitiveness and efficiency of railway rolling stock is highly demanded as the railway transport consider the nerve of the goods transport in the hole word. One of the requirements to develop the railway transport related to the continuous improvement of existing materials and find a new material which would satisfy such conflicting requirements as relia-bility, sustainability, producibility and the manufacturing process automation possibility. The researches show that use of polymer composite materials (PCM) in the production of both passenger and freight railway rolling stock, provides lightweight, improves its performance, increases durability and reduces operating costs. 

scholarly journals Improving the quality of the railway transportation process

2021 ◽  
Vol 112 ◽  
pp. 00047
Author(s):  
Viktor V. Kondratiev ◽  
Viktoriya A. Olentsevich ◽  
Boris O. Kuznetsov ◽  
Antonina I. Karlina
Keyword(s):  
Life Cycle ◽  
Traffic Safety ◽  
Transport Infrastructure ◽  
Throughput Capacity ◽  
Rolling Stock ◽  
Railway Transport ◽  
Safety Level ◽  
Efficient Operation ◽  
Fixed Assets

The safety of trains is the basis of the efficient operation of the railway transport system, the optimal organization of passengers and cargo transportation. All organizational and technical activities in railway transport must meet the requirements of safe and uninterrupted train traffic. Traffic safety is ensured by the maintenance of all facilities, railway tracks, rolling stock, equipment and mechanisms, technical devices and communications. In order to ensure a given level of train safety, it is essential that the technical facilities and personnel have the appropriate safety level. Comprehensive management of reliability, risks, cost of life cycle in railways is a technology that improves the quality of services. This technology is characterized by several components, namely, factors that affect the reliability and safety of railway facilities, as well as the means of achieving reliability and safety; risk and complete safety; cost of life cycle. As part of the security provision, the Russian Railways regularly upgrades its fixed assets. These are projects related to safety, which are based on life safety aimed at ensuring the technological sustainability of the production process, improving traffic safety and maintaining the existing throughput capacity of transport infrastructure. The assessment of the influence of technical failures and defects on the performance and economic criteria of rail transport will enable objective management decisions to be made in the area of fixed assets renewal in order to improve traffic safety and to introduce measures to reduce the share of non-productive expenditures of structural units.

Analysis of failures in the operation of technical means on the example of the landfill of the Northern Railway

2020 ◽  
Vol 1 (4) ◽  
pp. 345-351
Author(s):  
O. V. Bykova
Keyword(s):  
Power Supply ◽  
Railway Track ◽  
Rolling Stock ◽  
Technical Equipment ◽  
Railway Transport ◽  
Available Bandwidth ◽  
Regulatory Documents ◽  
Transportation Process ◽  
Analysis Of Failures

Discussed issues that affect the reliability of various elements of the infrastructure of railway transport, such as the railway track, power supply devices, artificial structures, rolling stock, automation devices, telemechanics and communications. The main technical devices of railway transport are listed. The classification of failures in the operation of technical means of transport is given, depending on their category; classification of technical equipment, the failures of which are subject to obligatory accounting or to be accounted for in cases of their influence on the transportation process in accordance with regulatory documents in force in railways. As a result of working with the initial data on failures that caused train delays, the main services involved in the occurrence of failures in the operation of technical equipment at the Northern Railway training ground were identified; also provides an analysis of failures in the operation of technical equipment in the regions of the Northern Railway. Classifier of the causes of failures in the operation of technical facilities by services and the causes of the occurrence on the Northern Railway, which most failures fall on, is formed; identified the main reasons for the failure of the relevant units of the railway transport. The dependence of the available bandwidth on the reliability coefficient is given.

scholarly journals Analysis of Placement Conditions on Roads and Characteristics of Railway Crossings in the Republic of Kazakhstan

2021 ◽  
Vol 20 (3) ◽  
pp. 224-233
Author(s):  
D. V. Kapskiy ◽  
E. N. Kot ◽  
S. V. Bogdanovich ◽  
A. G. Rybinskiy ◽  
K. Ibrayev
Keyword(s):  
Traffic Safety ◽  
Traffic Accidents ◽  
Road Traffic ◽  
Road Transport ◽  
Transport Infrastructure ◽  
Rolling Stock ◽  
Road Traffic Accidents ◽  
Level Crossings ◽  
The Republic ◽  
New Research

Road traffic accidents of vehicles with a rolling stock of railways lead to the most serious consequences. Many level crossings are places of long delays of vehicles both before and after the traffic. In this case and in many others, the intersections of highways with railways sharply limit the capacity of the highway. Level crossings require the utmost attention of the traffic organization, since they must include not only devices for the movement of cars, but also pedestrian and sidings. Despite the fact that the problem of road traffic accidents at level crossings is not new, research and analysis of statistics in this area continues around the world. The paper considers the level crossings on the Republican highways of the Republic of Kazakhstan. Research has been carried out on ways to improve traffic safety at such crossings. The situation at the level crossings of the roads of Republican significance, as well as possible restrictions and regulatory requirements, have been studied in the paper. The paper presents results of a detailed collection of data at the facilities, which will serve as the basis for the development of a detailed program for improving the regulatory and technical base of the road sector in Kazakhstan to improve the safety of  road transport infrastructure, taking into account existing standards. Recommendations are given for the implementation and generalization of advanced international experience in organizing road traffic at railway crossings, which will contribute to the adaptation of the Republic of Kazakhstan in the context of the development of transport and communications.

UNIFORM PRINCIPLES OF ORGANIZATION OF RAIL FREIGHT TRANSPORTATION OPERATIONS

2020 ◽  
Vol 17 (5) ◽  
pp. 186-198
Author(s):  
E. S. Prokofieva ◽  
V. V. Panin
Keyword(s):  
Process Management ◽  
System Analysis ◽  
Rolling Stock ◽  
Stock Management ◽  
Railway Network ◽  
Transport Modelling ◽  
Technical Data ◽  
Use Of Resources ◽  
Transportation Process

Improving the operational efficiency of transport is one of the main catalysts for raising the quality of life and socio-economic development. The prevailing global trends are aimed at establishing logistic chains from producers to consumers. The cross-border movement of world production within the framework of globalization, the deepening of integration processes between countries highlight the issues of developing a methodology for planning and evaluating international transport corridors from various points of view, and economic, technical, social, environmental and other aspects. The urgent issue is the harmonization of the technical and regulatory framework for the organization of «seamless» transportation, the synchronization of the technological cycles of various modes of transport, including operation of multimodal transport hubs. A large number of studies are dedicated to the modelling and control of traffic flows, new methods of forecasting the transport situation using the results of computer dynamic transport modelling, analysis of existing infrastructure resources and elimination of bottlenecks in the existing railway system (including through the expansion of the railway network and innovative methods of traffic control).Hence the achievement of target parameters of efficiency of production activity of all participants in railway transportations is possible through qualitative changes in the system of the organization of transportation process, the objective of the research was to study technological aspects of improvement of quality of functioning of the transport system in relation to activity of the Russian railways.The research applied methods of system analysis of scientific and technical data and technical and economic indicators of complex systems.The issues of implementation of end-to-end principles of transportation process management are considered, the concept of «technological polygon of transportation process management» is expanded. The analysis and grouping of methods for improving the efficiency of railway transport was carried out with regard to improving the operation quality indicators and refined model of rolling stock management, increasing the efficiency of the use of traction equipment, profiling of railway itineraries in respect of the preferred types of traffic, establishing sections well-provided for safe passage of freight trains and synchronized with the operation ranges of locomotives, organizing freightage in wagons withincreased axle load, removing barriers and restrictions in the power supply sector, etc.The transition to the «polygon» model of the organization of the technological process, the unification and optimization of the use of available resources, and, as a result, the reduction of risks of losses from transportation, service provision and unplanned use of resources are effective tools to improve the quality of rail operations. 

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