For the implementation of a mixed type of transportation on the territory of Ukraine, a stable saddle for transporting cargo semi-trailers without a tractor on railway platforms of the 13-9004M model ...was developed and manufactured. This device for the transportation of cargo semi-trailers is a four-sided structure of the "Eiffel Tower" type, the lower plane of which is fixed on the platform car through the plate with the help of bolted connections. This work describes the running tests of the 13-9004M model platform car with a saddle rack installed on it for the transportation of cargo semi-trailers without a tractor. According to the results of the tests of the saddle rack for the transportation of semi-trailers on the platform wagon model 13-9004M, the maximum values of the stresses that occur in the structure of the saddle rack during running strength tests, as well as compliance with such indicators as the coefficient of vertical dynamics of the sprung mass of the cart, the coefficient of vertical dynamics of the unsprung mass, were determined trolley frame, coefficient of horizontal dynamics, coefficient of reserve of stability of the wheel from derailment.
Automatic Detection of Track Length Defects Kanis, Juaraj; Zitrický, Vladislav
LOGI – Scientific Journal on Transport and Logistics,
01/2022, Letnik:
13, Številka:
1
Journal Article
Recenzirano
Odprti dostop
Ensuring the safety of railway transport operation requires constant monitoring of the technical condition of individual elements of railway infrastructure. The necessary activities that contribute ...to maintaining good operational condition of the railway transport line also include the diagnostics of track length. Diagnostics of railway tracks is most often performed by means of regular visual inspection (in the conditions of the infrastructure manager – ŽSR). The objective of the article is to provide information on the application of a new approach to diagnostics of the technical condition of railway infrastructure. The new approach to defect identification on railway infrastructure uses non-invasive diagnostic methods based on the latest knowledge in the field of information and communication technologies. These facts resulted in investigating the possibilities of automatic detection of the technical condition of the track length using neural networks. The article is part of the following scientific research task: ‘Research into new knowledge and observational experience of a new generation of diagnostic systems in industrial production and transport industry – research into the physical nature of an automated track length video inspection system’, supported by the Ministry of Education, Science, Research and Sport of the Slovak Republic.
The article discusses possible classifications of business communications in the transport sector. The levels of organizational culture are presented, both in the general theoretical aspect and in ...relation to the transport sector on the example of railway transport. It was revealed that the activities of Russian Railways in building business communication demonstrates the presence of all three levels of organizational culture formation. It was concluded that such activities are necessary for all subjects of communications in the transport sector, which will contribute to sustainable territorial development.
Environmental noise pollution is nowadays one of the most serious health threats. The impact of noise on the human body depends not only on the sound level but also on its spectral distribution. ...Reliable measurements of the environmental noise spectrum are often hampered by the very high price of top quality measuring devices. This paper explores the possibility of using much cheaper audio recorders for the frequency analysis. Comparative research was performed in laboratory and field conditions, which showed that, with some limitations, these devices can be useful in analyzing the frequency of environmental noise. This provides an opportunity for reducing the cost of noise analysis experimental work.
Artificial Intelligence (AI) is becoming pervasive in most engineering domains, and railway transport is no exception. However, due to the plethora of different new terms and meanings associated with ...them, there is a risk that railway practitioners, as several other categories, will get lost in those ambiguities and fuzzy boundaries, and hence fail to catch the real opportunities and potential of machine learning, artificial vision, and big data analytics, just to name a few of the most promising approaches connected to AI. The scope of this paper is to introduce the basic concepts and possible applications of AI to railway academics and practitioners. To that aim, this paper presents a structured taxonomy to guide researchers and practitioners to understand AI techniques, research fields, disciplines, and applications, both in general terms and in close connection with railway applications such as autonomous driving, maintenance, and traffic management. The important aspects of ethics and explainability of AI in railways are also introduced. The connection between AI concepts and railway subdomains has been supported by relevant research addressing existing and planned applications in order to provide some pointers to promising directions.
This study introduces and explores the concept of “ripple failure” in the China-Europe Railway transport network (CRN) by analyzing the interplay between flow, risk, and ripple failure in the dyadic ...supply–demand relationship of transport stations. A layered risk-flow network is constructed, and a multi-group SIR-like model is proposed to delineate the risk propagation dynamics. Scenario-based simulations and regression analyses are conducted to examine the effects of ripple risk propagation on the performance of the westbound CRN. The results indicate that the ripple risk propagation of CRN depends on the operational modes of stations, topological and geographic location, and neighboring stations. Innovative station transportation organizations can effectively enhance the CRN’s anti-vulnerability, particularly for the European segments and wide-gauge segments. At the node level, Forward risk is more influential on upstream stations, while the backward risk is more influential on downstream stations. At the network level, both forward and backward risks have similar negative impacts on the network performance.
•Introduces and explores the novel concept of “ripple failure” in the China-Europe Railway transport network (CRN).•Constructs a layered risk-flow network and proposes a multi-group SIR-like model to delineate risk propagation dynamics.•Ripple risk propagation of CRN depends on the operational modes, topological and geographic location, and neighboring stations.•The forward risk is more influential on upstream stations, while backward risk is more influential on downstream stations.•Innovative station transportation organizations can effectively enhance the CRN’s anti-vulnerability.
The introduction of tact timetable in rail passenger transport is currently a new evolving trend that increases the efficiency of rail transport. This article seeks to contribute in this area of the ...issue and thus to raise and improve this system of organizing transport in railway transport. The aim is to propose a methodology that assesses the level of stability of tact timetable based on operational and infrastructural factors. The methodology identifies operational-infrastructural factors that affect the stability and reliability of tact timetable. Using scientific methods, it presents the method of their quantification and determination of the weights of these factors, which evaluate the line sections and transport points of the examined transport path. From a practical point of view, the methodology is generally tact applicable to other European railway networks. In the final part of the work, this methodological procedure is applied in the form of model examples for various transport path.
The political and social climate in Italy at the end of the First World War was fertile ground for the establishment of the Fascist Regime. During Fascism, even the transport sector, already strained ...by the war effort, was subject to organisational changes aimed at establishing greater political control. A well-defined pattern was imposed on the organisation of the State Railway Administration, as a state rail transport body, accompanied by a strict military order. During the fascist period, two distinct phases of change in the internal organisation of the State Railways Administration can essentially be identified. The first was marked, in 1922, by the appointment of the Extraordinary Commissioner for the State Railways, while the second, which determined the real beginning of the Fascist administration for the State Railways, was characterised by the establishment of the Ministry of Communications, which took place with Royal Legislative Decree RDL. No. 596 of 30 April 1924. The contribution, after a brief historical reconstruction of the development of the Italian railway network, focuses on the analysis of the railway transport system during the years of Fascism, highlighting how the regime, in a highly strategic sector such as transport, actually implemented timid political-institutional transformations. Specifically, the work analyses the establishment of the Ministry of Communications and the reorganisation of railway services.
PDF
