Transport-technological System Research Articles

Improving transport and technological process to supply material resources for house construction

The fundamental principles of material resources supply for house construction are addressed, provided that the delivery of products and structures to the facility under construction is by motor vehicles. The transport-technological process is described as a function of time average variables. Listed the necessary conditions for the rational transport and technological process management as a system for house construction, taking into consideration operational planning for the provision of material resources to the construction site in the right quantities. Provided the characteristics of the main objectives to be addressed in the transport-technological system indicating their possible effectiveness. The structural and logistical concept of the transport and technological process with possible costs minimization in construction has been developed. At the same time, the product flows have been envisaged taking into consideration the core operations, including manufacturing, material handling, shifting and consumption, based on the condition that all items and structures must be delivered to the facility for operations in the right quantities, at the indicated place and at the appointed time. Proposed the elements of a trilateral agreement between a material resources supplier, a motor transport operator and a construction company, indicating the rights and duties of each of the three parties, as well as the procedure for the delivery of these terms. Recommended the main sections and their content in the prepared transport and technological flow schemes, based on which the need for each type of material resources and the necessary delivery conditions were determined. The factors affecting the motor vehicles selection and management actions for the supply of material resources to construction sites are indicated.

SPECIFICS OF DIAGNOSTICS OF TECHNICAL CONDITION OF TRANSPORT AND TECHNOLOGICAL SYSTEM “MINING GAS PIPELINE – MINE WORKING”

The purpose of the paper is to analyze a deformation mechanism of the mine degassing pipelines to forecast their spatial changes in terms of intensification of underground mining of coal-gas seams.
 Methodology. The paper deals with expert assessment of the available approaches to diagnostics of technical condition of mine degassing pipelines, which are constructed within the in-seam underground mine workings with the floor rocks prone to heaving. The results of scheduled surveying measurements of technical condition of in-seam development workings have helped identify the potentially hazardous zones of rock mass deformation and indices of changes in spatial location of section degassing pipelines mounted in those mine workings. To determine the operating modes of a degassing pipeline under such operating conditions, a computer model of interaction of the elements of transport-technological system “mine gas pipeline – mine working” has been developed
 Findings. Diagnostics of technical conditions of the mine gas transmission lines and examination of their dismantled components have helped understand that deflections, mainly resulting in water accumulation zones, intensive corrosion of internal pipe walls, and mechanical depositions of coal and rock dust take place right within the flange connection areas. Formation of such zones is argued by health of the degassing pipeline as well as mine air inflow. Availability of internal corrosion, water accumulations, and mine air inflow decreases substantially capacity of the underground gas transmission line inclusive of qualitative characteristics of the captured methane-air mixture and efficiency of MDS on the whole.
 Originality. New approaches to diagnostics of technical condition of mine degassing gas pipeline in difficult mining and geological conditions of development of gas-bearing coal seams are substantiated and it is offered to consider indicators of their functioning as interacting in space and time transport-technological system "mine gas pipeline - mining".
 Practical implications. The operational parameters of mine degassing systems notes that the equipment performance with the least underpressure losses created by vacuum pipes requires that the degassing pipeline should have minimum hydraulic resistance of the gas transmission network. Pipeline aeration from the mine workings and water accumulations should be prevented by means of qualitative hermetic sealing of its flange connections as well as the pipeline straightness with the corresponding pitches. Consequently, the basic requirements for operating mine degassing pipelines involve their design profile, tightness of flange connections of pipes as well as operative control of the facility health.

Strategic tools to improve of environmental friendliness of logistics chains

The transport of goods contributes to an increase in global greenhouse gas emissions. Despite the fact that its share is much less than that of industries, there is significant legislative pressure to reduce emissions from transport. A review and critical analysis of strategies to reduce or completely eliminate the negative impact of international logistics supply chains on the environment was carried out.Comparative characteristics of transport modes are presented, taking into account their negative impact on the environment. An extended review of scientific and practical publications on the topic of “green supply chain management” was carried out in order to reduce the negative impact of cargo transportation on the environment. Strategic solutions have been identified and analyzed to reduce emissions associated with the transportation of goods. Highlighted strategies, the attitude towards which in society has changed for the worse.The main method used is critical analysis. The subject of research is the area according to the passport of the scientific specialty 05.22.01 “Transport and transport-technological systems of the country, its regions and cities, organization of production in transport”, p. 6 “Protection of the environment from the polluting effects of transport”.The scientific novelty of the research lies in the proposed theoretical foundations and the identification of operational “tools” for improving the environmental friendliness of supply chains in the form of combined strategies.The relevance of the work is substantiated by environmental priorities in the state policy of the Russian Federation. In 2019, a large-scale national project “Ecology” was launched in our country, the main goal of which is to change the negative impact on the environment by 2030 and create comfortable living conditions for people in the country.It has been found that the available modes of transport vary greatly in emissions, with slower modes of transport generally having fewer emissions than faster ones.

Synthesis of energy-saving transport-technological systems with screw working bodies

The purpose of research is the synthesis and presentation of new designs of energy-saving transport and technological systems. The object of research is the processes of transportation of bulk materials by transport and technological systems with screw working bodies. The subject of research is the design of energy-saving transport and technological systems with screw working bodies and their parameters. The method of generation of constructions of energy-saving transport-technological systems with screw working bodies by synthesis of hierarchical groups by means of morphological analysis is offered in the work. The model of the mechanical system "screw conveyor" with grouping of constructive elements on hierarchical groups and assignment to the first group of mechanisms of transportation of freight, screw working bodies and mechanisms of transfer of the twisting is developed. Results. A method of structuring the structures of energy-saving transport and technological systems with helical working bodies and a method of their improvement based on the study of the properties of the elements of their structure in accordance with the theory of synthesis of hierarchical groups using morphological analysis.

Structural analysis of Braking Energy-Conservative Systems of Transport Technological System

The possibilities of application of the ways and means allowing beneficial use of kinetic energy of moving masses of various transport and transport-technological machines in the course of braking are considered. The concepts of development of inertial and energy-storage braking means for different types of actuating units are presented. The generalized block schematic diagram of a multimass object with the inertial energy-storage braking system and morphological matrix of possible technical solutions are offered. Various offers on realization of inertial and energy-storage braking systems in the designs of technological machines are shown and the results of the researches of energy-storage braking are presented.

Development of transport and technological process options' concept for goods delivery with participation of maritime transport

The object of research is the transport and technological process of cargo delivery with the participation of sea transport. One of the reasons for the ineffective delivery of goods using sea transport is the lack of a theoretical basis for an integrated review of the transport and technological delivery process within the entire delivery system. This accordingly affects the practical implementation of the delivery of goods. The traditional approach involves consideration of the transport and technological process within one of the delivery areas and relies on the appropriate transport and technological system. The modern transport market and the technological base of port terminals allow to vary and combine transport technologies at various sections of cargo delivery. This determines the corresponding multivariance of the transport and technological process with its integral consideration. This approach is the ideological basis of this study.Two levels of consideration of the transport and technological process are established. The first is the level of individual participants in the cargo delivery process (for example; a port terminal; a sea carrier). The second is the level of the entire delivery system from the point of departure to the place of transfer of responsibility for the two parties to the foreign trade contract. The level of consideration of the transport and technological process determines the controllability of this process. In its integral consideration; the transport and technological process acts as a control object for the delivery organizer / cargo owner. A correspondence has been established between transport-technological systems and the transport-technological delivery process; according to which the latter can use a combination of several transport-technological systems as the technological basis. The main options of the transport and technological delivery process (for example; export) with the participation of sea transport by varying various transport and technological systems at different delivery sites are determined. The boundaries of variation by the transport and technological delivery process depending on the basis of delivery are justified.The results of this research provide an opportunity to increase the efficiency of transport support of foreign trade contracts due to the integrated consideration of various technologies within a single delivery system. Further development of these results is focused on optimizing the parameters of the delivery process in accordance with a given criterion and limiting conditions.

IMPROVING METHODS FOR MONITORING AND DIAGNOSING THE TECHNICAL CONDITION OF SELF-PROPELLED TRANSPORT AND TECHNOLOGICAL EQUIPMENT OF MINING ENTERPRISES

This article evaluates the current methods for monitoring the technical condition of imported self-propelled loading and delivery equipment, which is operated in real conditions of the mining industry. Comparative assessment of the performance of foreign self-propelled equipment should be evaluated by the indicator of Overall Equipment Effectiveness (OEE), which is evaluated depending on the availability, efficiency and quality of work of the LHD.The results of experimental and theoretical studies of the parameters of the interaction of the transport-technological system "self-propelled machine - mining environment" and bench tests of LHD parts allowed to state that the vast majority of downtime of self-propelled equipment due to equipment failures can be prevented by improving its system of maintenance and diagnosis. The components of the indicator of the overall effectiveness of self-propelled equipment are determined.Numerous failures of systems and parts are primarily due to the absence of monitoring schemes at mining enterprises that would allow operational control of the condition of self-propelled imported equipment. In this regard, it is necessary to obtain a database of the causes of failures of systems and parts, which can be considered as the basis for the development of methodological guidelines for the control and testing of the technical conditions of the LHD in real mining conditions.Based on the automated collection and processing of information about the technical condition of LHD and expert assessment of the resource indicators of units and parts according to the frequency of their failure, it has been established that currently diagnosing the technical condition of foreign-made self-propelled mining transport equipment is a complex integrated task requiring the development of relevant modern methods and measuring equipment with additional software.

Factors influencing the work of the transport and technological system of the industrial and agricultural region of Eastern Ukraine in the conditions of deregulation of cargo flows

The article considers external and internal factors that influence the work of the transport and technological system of the industrial-agrarian region of Eastern Ukraine in the conditions of cargo deregulation. The transport and technological system of the region, the seaport being the basis of the system; combines the work of different modes of transport: rail, road, sea and fixed modes of transport over its territory. The operation of this system is influenced by many different factors, especially in the conditions of deregulation of cargo flows in the surrounding region. Therefore, the studies assessing the factors that influence the work of infrastructure of transport and technological systems in the conditions of deregulation of cargo flows should be considered relevant. Simulation of development efficiency of such a complex transport and technological complex as seaport is possible on multicriteria basis. The method which is a mathematical description of the processes and objects of the system in conditions of deregulation of cargo flows, as well as the system of processes seems to be the most exact. The way the model is built is based on a comparison of the factors that influence the transportation technology system, their grouping and evaluation. The purpose of the study is the maximum effective and metric utility of all the process elements, consisting of effective and metric utility of each process element of the system with the minimum cost of all effective and metric indicators (works). Various factors that influence the seaport of the Eastern Ukraine region in the conditions of cargo deregulation have been studied, a logistical effective and metric model of the utility of the transport-technological system has been made up. It has been determined that the reduction of resource costs is the basis for improving the efficiency and productivity of the seaport under the conditions of cargo deregulation. The work of the infrastructure of the transport and technological system implies certain measures that affect its regular functioning. The analysis of the logistic effective and metric model shows that the functioning of the transport-technological system depends on the influence of a certain complex of factors of different type, which requires evaluation of its work on a multicriteria basis. The result of the study is a grouping of factors; a model for evaluating the work of the transport-technological system of the industrial-agrarian region has been proposed

Using the simulation modeling with stochastic estimation of trafficability of forest transport systems

Forecasting trafficability of logging and forest transport systems on the ground, which have a multi-sectional layout solution is considered in the paper. Trafficability problems are evaluated from the point of view of the stochastic character of indicators of traction properties - the forces of resistance to movement and the adhesion force of the driving wheels with the supporting surface. With the stochastic estimation of trafficability the law of Gaussian distribution for random values of the rolling resistance coefficient and the two-parameter Weibull distribution law with a negative asymmetry coefficient or values of the shape parameter greater than 4 for the cohesion coefficient was adopted. A stochastic approach to the evaluation of trafficability allows to ensure a rational distribution of the power flows between propulsors of the transport-technological system, which is shown in this paper.

Технологічні аспекти розробки модулів транспортно-технологічних систем коренезбиральних машин

Технологічні аспекти розробки модулів транспортно-технологічних систем коренезбиральних машин

Реконструктивний розвиток транспорту України на сучасному етапі

The article shows that reconstructive development of Ukrainian transport at the present stage requires defining the global trends in the development of transport systems, with a focus on identifying both techno-technological and institutional changes and new approaches to transport policy in Ukraine. The author highlights the trends in the formation of modern integrated global transport system. In particular, that, while, in the first four techno-economic paradigms, certain types of transport dominate, in the fifth and sixth paradigms, on the forefront are the multimodal transports integrating individual modes of transport in a single transport-technological system with the use of logistics, intellectualization, high-speed technology, and new types of rolling stock, which is especially clearly and convincingly observed in developed Western countries. The article summarizes main aspects in the formation of the transport infrastructure of the new techno-economic paradigm. Further research on the subject requires development and implementation of the concept of technological transformation in Ukraine, which will affect the upgrade of transport policy in Ukraine and integration of transport and industrial policies.

Development of an ecomomic and mathematical model of loading a freight and passenger ferry

Ferries are an important structural element of the ferry transport technological system (TTS) and an integral part of the global navigation. Today, ferry transportation is widespread in Europe, the Baltics and the CIS countries. The most developed traffic on the maritime market is such freight and passenger ferries as ro-ro passenger and ro-pax ferries. Ferries are a linear fleet with a number of peculiarities that complicate the decision-making process on the formation of their loading. The features that do not depend on the ferry sailing region include diversified cargos, a composite cargo and passenger loading, a multitude of consignments from different shippers, a wide variety of tariffs, discounts and surcharges for transportation depending on many factors, and a set schedule of the ferry operation. The study presents an economic and mathematical model that maximally takes into account the specific features of organizing ferry transportation as well as the technical and operational characteristics of vessels. This is achieved by incorporating into the model structure those restrictions whose left side reflects the characteristics of the ferry and the line, whereas the right side reveals the parameters of the cargo and passenger traffic. In particular, it should be specified that a composite loading of the ferry with both cargos and passengers implies restrictions that prevent the carriage of passengers without a cargo or transporting cargos without passengers accompanying them. This peculiarity of ferry loading was disregarded in previous studies devoted to optimizing the loading of vessels. Furthermore, the control parameters, which are Boolean variables, used in the model help take into account the linear and mass characteristics of each cargo unit, which is caused by a wide variety of cargos within the same nomenclature. The specified peculiarities of the suggested economic and mathematical model make it applicable for both Ukrainian and foreign ferry operators. Furthermore, the model is open to any, if necessary, modifications depending on the requirements of individual companies due to addition or elimination of certain restrictions.

NOVOROSSIYSK SYSTEM OF TRANSPORT FLOWS REGULATION

[For the English abstract and full text of the article please see the attached PDF-File (English version follows Russian version)].ABSTRACT The authors show characteristics of the transport load on the road network of the port city of Novorossiysk, and the reasons for a long stay of road trains within the boundaries of the municipality. Results of study of traffic flows by type of vehicles, traffic intensity on streets, the nature of interaction with port infrastructure, maritime terminal are given. The authors offer a solution to the problem of congestion of municipal roads through introduction of a notification and permitting traffic control system by a single operator and a block diagram of conceptual algorithm of integration of vehicles into its structure. REFERENCES 1.Administration of the municipality of the city of Novorossiysk.Official web-site (in Russian).[Electronic resource]: http://admnvrsk.ru/o-gorode/elektronnyy-ekonomicheskiy-katalog/ infrastrukturnaja-obespechennost/transportnaja-infrastruktura/.Last accessed 08 .09.2015. 2.Sintserov, L.Transport and communication paradigm of global development [Transportno-kommunikacionnaja paradigma mirovogo razvitija].Mirovaja ekonomika i mezhdunarodnye otnoshenija, 2011, Iss.5, pp.122-128. 3.Lebedev, E.A., Golovanov, B. V.Regulation of transport flow in the logistics of the region [Regulirovanie transportnogo potoka v logistike regiona].Ensuring effectiveness and safety of road transport: Proceedings of All-Russian 65th scientific and practical conference.Omsk, SibADI, 2011, pp.51-55. 4.Mirotin, L. B.Logistics approaches in dealing with transport support during the crisis [Logisticheskie podhody v reshenii transportnogo obespechenija v period krizisa].Progress of transport vehicles and systems: Proceedings of the international scientific-practical conference, Volgograd, 2009, pp.60-64. 5.Lebedev, E. A.Improvement of a goal of creating transport systems [Sovershenstvovanie celi formirovanija transportnyh system].Transport: nauka, tehnika, upravlenie, 2011, Iss.11, pp.65-67. 6.Mirotin, L.B., Lebedev, E.A., Levitsky, M. O.Integration of regional transport communications.World of Transport and Transportation, Vol.12, 2014, Iss.4, pp.118-123. 7.Lebedev, E.A., Levitsky, M.O., Nedashkovskaya, A. O.Integration of transport-technological systems in intermodal transportation [Integracija transportno-tehnologicheskoj sistemy v intermodal’nyh perevozkah].Transport and transport-technological systems: proceedings of the international scientific-practical conference, Tyumen, TyumGITU, 2014, pp.139-144. 8.Kusnetsov, A.L., Galin, A. V.Genesis of development of the ports’ models in modern transport science [Genezis razvitiya modeley portov v sovremennoy transportnoy nauke].Vestnik gosudarstvennogo universiteta morskogo i rechnogo flota im.admirala S. O.Makarova, 2015, Iss.2, pp.141-153.

МЕТОДЫ ФОРМИРОВАНИЯ КОМПЛЕКСНО-ОПТИМАЛЬНЫХ ТРАНСПОРТНО-ТЕХНОЛОГИЧЕСКИХ СИСТЕМ

The article outlines full complex optimizations schemes of transport-technological systems. Structural differences between methods of formation of probable variants of decisions are revealed. Classification of methods is resulted

ОРГАНіЗАЦіЯ ТЕХНОЛОГіЧНОї ВЗАєМОДії ВИДіВ ТРАНСПОРТУ В ПУНКТАХ ПЕРЕВАЛКИ ВАНТАЖіВ

The question of research of technological process elements co-operation of transport types is examined with the use of the progressive transport-technological systems (TTS)