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1
Content available Increasing the resource of milling cutters used to process the locomotive wheelsets. Part 1: determination of cutting forces
Sładkowski A., Proydak Y., Ruban V.
Transport Problems
|
2018
|
T. 13, z. 3
119--130
EN
The purpose of this work is to increase the service life of milling cutters for wheel-milling machines KJ20, and to improve the processing quality of the working surface of wheelsets of railway vehicles. Questions of operation of cylindrical cutting tools are considered, force characteristics are determined, and also analyzed their stressed
2
Content available Application of artificial neural networks for shortterm prediction of container train flows in direction of China – Europe via Kazakhstan
Abdirassilov Z., Sładkowski A.
Transport Problems
|
2018
|
T. 13, z. 4
103--113
EN
International container transport plays an important role in the exchange of goods between China and Europe, and accordingly, the efficiency of the transportation increases with the organization of special container lines (land and sea). Owing to its geographical location, the territory of Kazakhstan has become one of the main international landlines for passage of container cargo in recent years. Priority is given to solution of such problems as reduction of cargo delivery time, simplification of customs operations, setting attractive and competitive tariffs, ensuring a high degree of cargo safety, development of transport infrastructure, assessment of the transit potential of railway network of the country, and predicting future cargo flows. This article shows the use of artificial neural networks (ANN) for predicting container train flows in the direction of China – Europe. For this purpose, a three-layer perceptron with a learning algorithm, based on the back-propagation of the error signal, was used. A concreto example shows how the ANN training process is conducted and how the adjustable parameters are selected.
3
Content available Failure Mode and Effect Analysis of Air Cargo Freight Services Provider
Sładkowski A., Cieśla M.
Logistics and Transport
|
2018
|
Vol. 38, No. 2
69--76
EN
In the theoretical part, this article presents the basic conditions for the organization of air transport cargo divided into different types of cargo shipments. Then an analysis of the Polish market of air cargo shipments is presented, taking into account the type of companies, airlines and airports that support them. In the research part, an FMEA analysis of an entity providing air cargo transport organization services was made, presenting several disadvantages and possible remedial actions that contribute to the improvement of the quality of services.
4
Content available Main trends of biofuels production in Ukraine
Panchuk M., Kryshtopa S., Shlapak L., Kryshtopa L., Panchuk A., Yarovyi V., Sładkowski A.
Transport Problems
|
2017
|
T. 12, z. 4
15--26
EN
The analysis of biological resources for biofuels production in Ukraine has been carried out, and it has been shown that usage of alternative energy sources has great potential for substantially improving energy supply of the state and solving environmental problems. The directions of development and new technologies of obtaining motor fuels from biomass are systematized. It has been established that usage of different types of biofuels and their mixtures for feeding internal combustion engines involves application of modified engines in terms of structure and algorithms and usage of traditional designs of cars without significant structural changes. Moreover, the impact of biofuels on the efficient operation of the engine requires further integrated research.
5
Content available Conference and journal “Transport Problems”. What's new?
Sładkowski A.
Transport Problems
|
2017
|
T. 12, z. spec.
5--10
EN
The interaction of the two kind activities of the Faculty of Transport of the Silesian University of Technology, namely the international conference and scientific journal, which have the same name "Transport Problems", is considered. It is proved that such interaction is very useful for transport scientists of different countries and serves a platform for information exchange and discussion of the most pressing problems of the transport industry. Changes that have occurred in this activity lately are being discussed.
6
Content available Rationalization of road transport park for the carriage of mining rocks in the open mines
Vuyeykova O., Sładkowski A., Stolpovskikh I., Akhmetova M.
Transport Problems
|
2016
|
T. 11, z. 1
79--85
EN
The article investigates causes and conditions of downtime of automobile and excavator complex in iron ore open mines in the structure of the multi-type fleet of dump trucks. The formulas for determining the downtime trucks of different carrying capacity allocated to a single excavator. In this article will find out the regularities of formation wasting time waiting at the loading multi-type structure of the park trucks.
RU
Рассмотрены причины и условия возникновения простоев автомобильно-экскаваторного комплекса в железорудных карьерах при разнотипной структуре парка самосвалов. Приведены расчетные формулы для определения простоев самосвалов разной грузоподъемности, направляемых к одному экскаватору. Установлены закономерности формирования потерь времени на ожидания погрузки при разнотипной структуре парка самосвалов.
7
Content available New possibilities of railway traffic control systems
Liudvinavičius L., Sładkowski A.
Transport Problems
|
2016
|
T. 11, z. 2
133-142
EN
This article analyses the train traffic control systems in 1435 mm and 1520 mm gauge railways. The article analyses the aspects of train traffic control and locomotive energy saving by using the coordinates of track profile change that have been received from GPS. In the article, achievements of Lithuanian railways (LG) in the area of train traffic control optimisation are presented.
RU
В статье рассматриваются системы управления движением поездов, следующих по железнодорожным линиям, ширина колеи которых составляет 1435 мм и 1520 мм. В статье рассматриваются энергосберегающие аспекты использования систем управления движением поездов и локомотивов, при использовании координат профиля железнодорожного пути, полученных от GPS. Встатье представлены достижения «Литовских железных дорог» (LG) в сфере оптимизации управления движением поездов
8
Content available Aktywna wibroizolacja drgań mechanicznych pasażerskiego wagonu kolejowego
Sładkowski A., Gąska D., Haniszewski T., Margielewicz J.
Zeszyty Naukowe. Transport / Politechnika Śląska
|
2015
|
z. 87
63--71
PL
W niniejszym artykule przedstawiono próbę numerycznego opisu układu aktywnej wibroizolacji drgań pasażerskiego wagonu kolejowego. Symulacje komputerowe przeprowadzono dla różnych prędkości przejazdu wagonu po tym samym torze. Formalną podstawę do rozwiązania sformułowanego problemu badawczego osiągnięto, wykorzystując prawa i zasady mechaniki oraz teorii sterowania. Wyniki badań modelowych jednoznacznie wskazują, że stosowanie układów aktywnej redukcji drgań w transporcie kolejowym może w istotny sposób poprawić komfort podróży.
EN
This paper presents an attempt of numerical description of the active vibration isolation system of railway passenger car. Computer simulations were performed for different speeds of the passenger car riding along the same track. Formal basis to solve the formulated research problem was achieved by using the law and the principles of mechanics and control theory. Model results clearly indicate that the use of active vibration reduction systems in rail transport can significantly increase comfort.
9
Content available Robotic transport complex of automotive vehicles for handling of rock mass at the process of open cast mining
Kolga A., Rakhmangulov A., Osintsev N., Sładkowski A., Stolpovskikh I.
Transport Problems
|
2015
|
T. 10, z. 2
109--116
EN
The article is concerned with the applicability of the robotic transportation complex of automotive barrows for haulage transportation along various transport routes of mining enterprises. The simultaneous application of robotic transport and telemetry links makes the door-to-door transportation possible, i.e. direct transportation from the starting to the final point avoiding intermediate storage and a considerable part of auxiliary equipment.
RU
В статье рассмотрена возможность применения роботизированного транспортного комплекса (РТК) самоходных машин для перемещения грузов на различных маршрутах горных предприятий. Совместное использование роботизированного транспорта и телеметрических связей позволяет осуществлять бесперегрузочную транспортировку от начального до конечного пунктов, исключая промежуточные складирования и значительную часть дополнительного оборудования.
10
Content available Gravity pipeline transport for hardening filling mixtures
Kroupnik L., Abdykalykova R., Sładkowski A., Shaposhnik Y., Shaposhnik S.
Transport Problems
|
2015
|
T. 10, z. 4
129--136
EN
In underground mining of solid minerals becoming increasingly common development system with stowing hardening mixtures. In this case the natural ore array after it is replaced by an artificial excavation of solidified filling mixture consisting of binder, aggregates and water. Such a mixture is prepared on the surface on special stowing complexes and transported underground at special stowing pipelines. However, it is transported to the horizons of a few kilometers, which requires a sustainable mode of motion of such a mixture in the pipeline. Hardening stowing mixture changes its rheological characteristics over time, which complicates the calculation of the parameters of pipeline transportation. The article suggests a method of determining the initial parameters of such mixtures: the status coefficient, indicator of transportability, coefficient of hydrodynamic resistance to motion of the mixture. These indicators characterize the mixture in terms of the possibility to transport it through pipes. On the basis of these indicators is proposed methodology for calculating the parameters of pipeline transport hardening filling mixtures in drift mode when traffic on the horizontal part of the mixture under pressure column of the mixture in the vertical part of the backfill of the pipeline. This technique allows stable operation is guaranteed to provide pipeline transportation.
RU
При подземной разработке твердых полезных ископаемых все большее распространение приобретают системы разработки с закладкой выработанного пространства твердеющими смесями. В этом случае естественный рудный массив после его выемки замещается искусственным из затвердевшей закладочной смеси, состоящей из вяжущего, заполнителя и воды. Такая смесь готовится на поверхности на специальных закладочных комплексах и транспортируется под землю по специальным закладочным трубопроводам. При этом она транспортируется по горизонтам на несколько километров, что требует обеспечения устойчивого режима движения такой смеси по трубопроводу. Твердеющая закладочная смесь изменяет свои реологические характеристики во времени, что усложняет расчет параметров трубопроводного транспорта. В статье предлагается методика определения исходных параметров таких смесей: коэффициента состояния, показателя транспортабельности, коэффициента гидродинамического сопротивления движению смеси. Эти показатели характеризуют смесь с точки зрения возможности транспортировать ее по трубам. На базе этих показателей предлагается методика расчета параметров трубопроводного транспорта твердеющих закладочных смесей в режиме самотека, когда движение смеси по горизонтальной части под действием давления столба смеси в вертикальной части закладочного трубопровода. Данная методика позволяет гарантированно обеспечивать устойчивый режим трубопроводного транспорта.
11
Content available Urban freight distribution: council warehouses & freight by rail
Sładkowski A., Dantas R., Micu C., Sekar G., Arena A., Singhania V.
Transport Problems
|
2014
|
T. 9, z. spec.
29--43
EN
Rail is the one of the highly underused form of freight transportation in the European Union. Majority of the freightage are distributed by trucks and HGVs. With new regulations and socio-environmental concerns urban logistics is facing a new challenge which can be tackled using innovative transport mechanisms and streamline operations. This article sheds light on a system which integrates freight distribution via metro lines in the closest vicinity of the customer, use of council warehouses and further innovative transport mechanisms for final delivery. This system uses existing infrastructure effectively without impacting its surroundings and triggers the reduction of polluting carriers. This system offers the option of immediate implementation which will enable EU to compete with a global freight distribution market.
PT
O caminho-de-ferro e um dos meios de transporte de mercadorias mais subaproveitado na União Europeia. A maioria da carga transportada é distribuída recorrendo ao transporte rodoviário. A entrada em vigor de novos regulamentos em conjunto com o aumento das preocupações sociais e ambientais, levam a que logística urbana enfrente novos desafios. Desafios estes que podem ser superados através de mecanismos inovadores e ou pela otimização de processos. Este artigo propõe uma nova abordagem através de um sistema que integra o transporte urbano de mercadorias sobre a rede de metropolitano chegando assim mais perto do destino final da carga, propõe ainda a instalação de pequenos centros de distribuição local e formas inovadoras de transporte até ao destino final da mercadoria. Este sistema utiliza a infraestrutura já existente de forma eficiente e sem impactos para a sua vizinhança, contribuindo assim para a redução da poluição causada pelo transporte rodoviário. Este sistema oferece a possibilidade de implementação imediata o que contribuirá para que a União Europeia possa competir num mercado de transporte de mercadorias global.
12
Content available Mathematical model of optimal empty rail car distribution at railway transport nodes
Rakhmangulov A, Kolga A, Osintsev N, Stolpovskikh I, Sładkowski A
Transport Problems
|
2014
|
T. 9, z. 3
125--132
EN
At present there are two trends in the market of rail freight transportation in Russia: freight owners put forward higher demands to the transportation quality (promptness of delivery) in an effort to reduce storage costs by means of reducing the size of freight shipment; the structure of railcar traffic volume of the railways of Russia is getting more complex due to the reduction of the average shipment size and due to the transfer of railcar fleet ownership to a large number of operating companies. These trends significantly complicate operational management supervision of railway stations and transport nodes. Application of typical data from the information system about the railcar location at the transportation node is not enough for the dispatchers to make the best decision concerning the car traffic management. The dispatcher traffic control service needs some software-based models of efficient railcar distribution. The article is concerned with the description and development of the mathematical model of empty railcar distribution for loading at the railway transport node; this model will take into account the requirements of railcar owners in terms of their cars application, the operating work level of railroad stations of the transportation node and the possibility of adding the groups of empty railcars to the transfer trains, clean-up trains and industrial railway trains operating on a tight schedule. The developed model and the software package were implemented in the information system of the industrial railway of the major metallurgical enterprise - OJSC «Magnitogorsk Metallurgical Works», which processes up to two thousand of railcars belonging to different owners. This model made it possible to reduce the labour intensity of dispatcher operation planning the empty railcar distribution for loading and reduce the total time the railcars spend in the enterprise railway system.
RU
Двумя основными тенденциями рынка железнодорожных перевозок в России являются: повышение требований грузовладельцев к качеству (своевременности) перевозок, что, в частности, связано с их стремлением ксокращению складских издержек путем уменьшения размера транспортно-грузовых партий; усложнение структуры вагонопотоков на железных дорогах России, происходящее как по причине уменьшения среднего размера отправок, так и в результате передачи парка железнодорожных вагонов в собственность множеству операторских компаний. Отмеченные тенденции значительно усложняют оперативное руководство работой железнодорожных станций и транспортных узлов. Использование диспетчерами типовых данных информационной системы о местоположении вагонов в транспортном узле является недостаточным для выработки оптимального решения по управлению вагонопотоками. Диспетчерскому аппарату требуется программно реализованные модели оптимального использования вагонов. В статье рассматривается постановка и алгоритм реализации математической модели распределения порожних вагонов под погрузку в железнодорожном транспортном узле, учитывающей требования собственников вагонов на их использование, оперативный уровень загрузки железнодорожных станций узла и возможность включения групп порожних вагонов в состав передаточных, вывозных поездов и поездов, обращающихся по контактному графику. Разработанная модель и компьютерная программа реализованы в рамках информационной системы железнодорожного транспорта крупнейшего в мире металлургического предприятия – ОАО «Магнитогорский металлургический комбинат», ежесуточно перерабатывающего до двух тысяч вагонов, принадлежащих различным собственникам. Использование модели позволило значительно сократить трудоемкость оперативного планирования работы диспетчеров по распределению порожних вагонов под погрузку, сократить суммарное время нахождения вагонов на путях предприятия.
13
Content available Efficient using of automobile transport for the deep open-pit mines
Mahambetov D., Rakishev B., Samenov G., Sładkowski A.
Transport Problems
|
2013
|
T. 8, z. 3
25--32
EN
In the paper the method is proposed of substantiation of the major parameters for zones of effective use of automobile transport of different loadcarrying capacity by open cast development of the deep deposits. An efficient ratio is determined between the mining and transport equipment by zone-to -zone use.
RU
В статье предлагается метод обоснования основных параметров для зон эффективного использования автомобильного транспорта различной грузоподъемности для открытой разработки глубоких месторождений. Эффективное соотношение определяется в зависимости от горного и транспортного оборудования горной промышленности и транспортного оборудования для каждой зоны его использования.
14
Content available En-route mechanical activation of viscous oil and oil products transported in railroad tank cars
Myrzakhmetov Y., Sładkowski A.
Transport Problems
|
2012
|
T. 7, z. 3
87-93
EN
The authors of this document are aiming to substantiate the advantages of en-route mechanical activation technology as aids for railroad transportation of viscous oil and oil products in tank cars. The conceptual design implies the use of momentum generated by brake action. This document also contains preliminary data of laboratory research confirming the validity of the developed concept.
15
Content available Analysis of reiability parameters of convey or belt joints
Temerzhanov A., Stolpovdkikh I., Sładkowski A.
Transport Problems
|
2012
|
T. 7, z. 4
107-112
EN
In the article was found the causes defects vulcanized joints based on analysis of operating of conveyor belts, given the physical and mathematical model of failure joints. Measures have been developed to improve the reliability of the joints of conveyor belts.
16
Content available remote Perspektywy rozwoju transportu kolejowego w połączeniu Wschód–Zachód
Sładkowski A.
Czasopismo Techniczne. Mechanika
|
2012
|
R. 109, z. 7-M
261--268
PL
W pracy przeanalizowano obecną sytuację transportu kolejowego i wskazano perspektywy jego rozwoju, który powinien zapewnić rosnące potrzeby wymiany towarowej pomiędzy Wschodem a Zachodem. Szczególną uwagę poświęcono Polsce jako mostowi transportowemu w zapewnieniu łańcuchów logistycznych dostawy towarów we wskazanym kierunku.
EN
The paper analyzes the current situation and identifies the perspectives of development of rail transport, which should provide a growing need for cargo exchange between East and West. Particular attention was given for Poland as the transport bridge for ensuring of logistics chains in the delivery of goods in this direction.
17
Content available Method of racyclabillity assessment on the example of forklift truck
Łachacz K., Sładkowski A.
Zeszyty Naukowe. Transport / Politechnika Śląska
|
2011
|
z. 72
69-74
EN
While using and after withdrawing from service technical objects, the technical objects causing ecological risk. In order to minimize the negative impact the technical object on the environment and achieve high level of recyclability, the specific steps should be undertaken in the design phase. The legal aspects of recycling process in case of vehicle were discussed. The disassembly process was discussed in case of fork lift truck. Two main characteristics influencing recyclability and a few categories were chosen for their evaluation. With using two main characteristics and their categories the parts susceptible and not susceptible for recycling can be found out.
PL
Obiekty techniczne w trakcie ich eksploatacji jak i po jej zakończeniu niosą ze sobą zagrożenie ekologiczne. W celu minimalizacji negatywnego wpływu obiektów technicznych na środowisko już na etapie ich projektowania powinno się podejmować działania umożliwiające osiagnięcie wysokiego poziomu podatności recyklingowej. W artykule omówiono aspekt prawny recyklingu urządzen i pojazdów transportowych oraz charakterystykę procesu demontażu wózka widłowego. Zaproponowano dwie główne cechy wpływajżące na podatność recyklingową i dobrano kategorie ich oceny. Przy wykorzystaniu tych danych, można poselekcjonować części na podatne i niepodatne na recykling.
18
Content available "Transport Problems": journal and conference
Sładkowski A.
Transport Problems
|
2010
|
T. 5, z. 2
125-132
EN
The history of creation of the journal "Transport Problems" is considered. Main principles of the publication of scientific papers in the journal are stated. Development of scientific contacts of experts, which were united by journal, and formation of the International Scientific Conference "Transport Problems" is described.
19
Content available Modeling of the deformation of elastic pads for rail fastenings
Sładkowski A.
Transport Problems
|
2009
|
T. 4, z. 1
63-70
EN
Rail fastenings are one of basic elements of the top structure of a track. Elastic pads are the important element of the rail fastenings. Definition of their elastic characteristics is necessary for the subsequent studying of the dynamic interaction between the track and the rolling stock.
PL
Przytwierdzenia szyn do podkładów są jednym z podstawowych elementów nawierzchni kolejowej. Sprężyste przekładki są ważnym elementem konstrukcji przytwierdzeń. Wyznaczenie ich parametrów sprężystości jest niezbędne do dalszej analizy współpracy dynamicznej pomiędzy torem a pojazdem szynowym.
20
Content available Results of VIII International Scientific Conference "Telematics, logistics and transport safety"
Sładkowski A.
Transport Problems
|
2008
|
T. 3, z. 4
121-124
EN
VIII International Scientific Conference “Telematics, Logistics and Transport Safety” was carried out in Katowice and Cieszyn from 16th to 18th of October 2008. Scientists from 12 countries, who have sent 59 papers, have taken part in its work. All materials of conference have been published in proceedings of the conference.
PL
VIII Międzynarodowa Naukowa Konferencja „Telematyka, logistyka i bezpieczeństwo transportu” odbyła się w Katowice i Cieszynie 16 - 18 października 2008 roku. W konferencji wzięli udział specjaliści z 12 krajów, którzy przysłali 59 referatów. Wszystkie materiały konferencyjne zostały opublikowane w zeszycie prac naukowych konferencji.
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