scholarly journals Studying and improving intermediate rail fastening of rail transport

2019 ◽  
Vol 109 ◽  
pp. 00028
Author(s):  
Volodymyr Hovorukha
Keyword(s):  
Rail Transport ◽  
Railway Track ◽  
Small Radius ◽  
Working Capacity ◽  
Operational Parameters ◽  
Transverse Loading ◽  
Topical Problem ◽  
Railroad Transport ◽  
Small Curvature ◽  
Horizontal Loading

Topical problem concerning the improvement of intermediate rail fastening of a railway track of railroad transport as well as industrial and underground rail one has been considered taking into account peculiarities of operation in terms of curved sections of a route with small-radius curvature. Objective of the paper is to improve operational parameters of a railway track with extra small curvature radii in terms of railroad gauge adjustment. Operation of the components of intermediate rail fastening, being subject to intense wear and destruction due to the effect of great transverse and horizontal loading within the curved route sections with small-radius curvature, has been and analysed. Innovative engineering solutions to improve intermediate rail fastening have been proposed. Such peculiarity of the device of intermediate rail fastening provides increased durability and working capacity of rail fastening components in terms of considerable transverse loading within the route sections with small-radius curvature. The obtained results may be applied for underground and industrial rail transport as well as for railroad one.

scholarly journals Magnetic-Measuring Square in the Measurement of the Circular Curve of Rail Transport Tracks

Sensors ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 560 ◽  
Author(s):  
Arkadiusz Kampczyk
Keyword(s):  
Operating Mode ◽  
Laser Wavelength ◽  
Rail Transport ◽  
Railway Track ◽  
Actual Condition ◽  
Measuring Device ◽  
Beam Laser ◽  
Magnetic Measuring ◽  
Measurement Results ◽  
Circular Curve

In rail transport, measuring the actual condition of a circular curve of a railway track is a key element of track position monitoring not only during operation but also during final works. Predicting changes in its position in the horizontal plane is one of the most important related scientific issues. This paper presents the results of measurements performed with an innovative measuring device called the Magnetic-Measuring Square (MMS). The aim of the research was to demonstrate the acceptability of using the MMS. Horizontal versines of a rail track curve were measured as three neighboring points on a curve (using the method of lacing/stringlining, also called the three-point or the Hallade method), and the perpendicularity of rail joints and shortenings were measured. The MMS device presented in this article was used to measure versines and differences in rails lengths (rail shortenings in the curve) in the operating mode involving a laser distance meter with a laser beam (laser power P < 1 mW, laser wavelength λ = 635 nm) with a target cross, a camera, and a surveying measuring disk. The measurement results confirmed that it is possible to employ the MMS to monitor the geometry of railway track fragments such as track transition curves and railway track curves in rail transport.

scholarly journals Modeling of Tractor Fuel Consumption

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2300
Author(s):  
Bronisław Andrzej Kolator
Keyword(s):  
Fuel Consumption ◽  
Soil Conditions ◽  
Simulation Studies ◽  
Working Capacity ◽  
Operational Parameters ◽  
System A ◽  
The Individual ◽  
Adjustment System ◽  
Unit Performance ◽  
Efficiency Indicators

In this paper, the energy diagnostic of tractor performance consists in evaluating the energy (fuel consumption per hectare—dm3 ha−1) for a given agricultural operation and in combining it with working capacity, also called productivity (area productivity—ha h−1). One of the methods of solving this problem is the identification of the functioning process of the machine unit. A model of the process of the machine unit performance was developed, considering the operation of the rear linkage system of the implement with the force control adjustment system. In order to analyze the system, a mathematical model of the system function was built: tractor-implement-soil, defining the physical connections and interdependencies between the individual subsystems of the system. Based on this model, a simulation model was developed and implemented in the Matlab/Simulink environment. The Simulink package was used to test the performance of the machine set. The efficiency indicators according to the adopted criteria were calculated in the evaluation block. To evaluate the process, the technical and operational parameters of the tractor, the type and parameters of the tool, and soil properties were taken into account. The results of simulation studies obtained on a validated model are consistent with experimental data from appropriate soil conditions.

Rail Transport Corridors of the Organisation for Co-operation of Railways

2021 ◽  
Vol 65 (191) ◽  
pp. 65-73
Author(s):  
Mirosław Antonowicz
Keyword(s):  
Emerging Markets ◽  
Transport System ◽  
Freight Transport ◽  
Continuous Operation ◽  
Rail Transport ◽  
Operational Parameters ◽  
Member States ◽  
One Belt One Road ◽  
Global Transport ◽  
International Transport

International transport corridors are part of the global transport system and are an important part of the activities of the Organisation for Co-operation of Railways2. The development activities in the Eurasian space are aimed at modernising and developing rail transport by upgrading the technical and operational parameters of the corridors in order to improve the competitiveness of railways in freight transport in Asia and Europe. These corridors are widely used to plan and organise the routing of container trains in international traffic between the OSJD member states. Today, nearly 300 container trains are in continuous operation. The aim of the article is to present the activities to date in the development of corridors, their role and importance in rail transport in the area of the member states of the Organisation for Co-operation of Railways. The article presents issues related to the development and freight transport on 13 international rail transport corridors from the Eurasian railway area. New corridor solutions were highlighted, as well as the New Silk Road3 which is part of China’s broader so-called One Belt, One Road Initiative concept. It is a global infrastructure plan developed in China and implemented in more than 100 countries, mainly in countries referred to as emerging markets. Keywords: international transport corridor, rail transport corridor, indicators for transport corridors, New Silk Road

scholarly journals Prevention of Economic Losses with the help of the System of Control of Saving and Storing Bulk Cargoes in the Process of Train Movement

2019 ◽  
Vol 67 ◽  
pp. 02008
Author(s):  
Vitalyi Sakhatsky ◽  
Nina Lyubymova ◽  
Vladimir Pusik ◽  
Luydmila Pusik ◽  
Ievhenii Chepusenko
Keyword(s):  
Control System ◽  
Horizontal Plane ◽  
Rail Transport ◽  
Railway Track ◽  
Economic Losses ◽  
Radar Sensor ◽  
Safety Control ◽  
Transport Services

In order to ensure the demand of the market for competitive rail transport services, the structure of automatic safety control for bulk cargo is proposed on the basis of the radar sensor and Wi-Fi technology, which allows to avoid the false alert signal caused by changes in the level of liquid due to various deviations of the railway track from the horizontal plane and to fix leakage of the liquid from damaged tank. The issues of increasing the reliability of the proposed control system are considered.

scholarly journals Research of safety indicators of diesel train movement with two-stage spring suspension

2018 ◽  
Vol 234 ◽  
pp. 05003 ◽  
Author(s):  
Andriy Kuzyshyn ◽  
Andriy Batig ◽  
Sergei Kostritsa ◽  
Julia Sobolevska ◽  
Vitalii Kovalchuk ◽  
...  
Keyword(s):  
Traffic Safety ◽  
Motor Vehicle ◽  
Stability Margin ◽  
Accurate Method ◽  
Railway Track ◽  
Rolling Stock ◽  
Operational Parameters ◽  
Wheel Pair ◽  
Rail Track ◽  
Safety Parameters

The problem of the interaction of rolling stock with the rail track has been analyzed in the present paper. It has been established that in the process of transport science development a number of methods for determining the causes of wheel pairs derailment are developed, which, in a varying degree, take into account the peculiarities of their interaction. The problem of choosing the most accurate method for estimating the causes of rolling stock derailment becomes more complicated because of the lack of sufficient experimental data that would allow us to verify the adequacy of the models. The indicators of stability of the wheel against derailment, which are used on the railways of Ukraine and Europe, have been examined. Their dependences on the speed of movement were derived. It has been established that the increase of the speed of motion leads to the increase of the interaction power of the rolling stock with the rail track, which may, under certain operational parameters, provoke its derailment. As a result of the calculations, it has been shown that the use of norms for car design and calculation used on Ukrainian railways can lead to an inadequate estimation of traffic safety parameters, since it does not take into account the unevenness of the railway track. It has been established that the requirements of BS EN 14363: 2005 European norms are stricter in comparison with the norms for calculation and evaluation of the bearing elements strength and dynamic qualities of motor-vehicle rolling stock used on Ukrainian railways. A comparison of the experimentally and theoretically calculated values of the stability margin coefficient against wheel derailment of the first wheel pair of the diesel train car was carried out.

Description of Subway DT Series Fastening

2014 ◽  
Vol 644-650 ◽  
pp. 535-538
Author(s):  
Wei Ping Wang ◽  
Dun Jin Cai ◽  
Xu Feng Ma ◽  
Ping Wang
Keyword(s):  
High Speed ◽  
Rail Transport ◽  
Railway Track ◽  
Track Structure ◽  
Large Space ◽  
High Speed Railway ◽  
Urban Rail ◽  
Subway System ◽  
Speed Up ◽  
Rail Structure

In recent decades, with the acceleration of population flowing in China, large and medium-sized cities to speed up the construction of urban rail. Relatively high speed railway, the requirement of the urban rail is relatively low, so it can be designed on the basis of high speed railway track structure for urban rail transport, this gives the designer the design of large space;Each city urban rail structure more or less differences. Especially fastening system is various, even in the same line also exist different fastening systems.Because Chinese fastening system in the subway is various, not a fixed is widely used fastening system;This paper, the DT series fastening in subway system has carried on the simple summary. Make a reference for fastening researchers.

scholarly journals GELEŽINKELIO KELIO GEOMETRINIŲ PARAMETRŲ DINAMIKOS TYRIMAS TAIKANT KELIO KOKYBĖS INDEKSĄ / RAILWAYS GEOMETRICAL PARAMETERS DYNAMICS INVESTIGATION BY TRACK QUALITY INDEX

2018 ◽  
Vol 10 (0) ◽  
pp. 1-7
Author(s):  
Vytautas Motiejus Bubnelis ◽  
Benas Slepakovas ◽  
Laura Černiauskaitė ◽  
Henrikas Sivilevičius
Keyword(s):  
Quality Index ◽  
Rail Transport ◽  
Geometric Parameters ◽  
Railway Track ◽  
Geometrical Parameters ◽  
Track Geometry ◽  
Track Condition ◽  
Over Time ◽  
Track Quality

Rail transport, in competition with other modes of transport, has to improve the quality of passenger and freight transport. In order to carry passengers and goods quickly, efficiently and safely, it is necessary take maintenance railways so that their geometric parameters do not exceed the tolerances. About real railway track condition, the data is obtained by track geometry recording car, measuring seven geometric parameters dispersion. This paper presents the methodology for determining and estimating the geometric parameters of the track geometry, which shows that the track quality index (TQI) is the sum of the variance of seven geometric parameters. Experimental research on the two-track A (8km) and B (11km) a three-year period (2015-2017) for all 12-month KKI, establish their quality dynamics (change over time). These data indicate that the quality of the analyzed sections A and B was good, but due to the increasing mass (in megatons) of transported loads, there is a tendency to deteriorate. Santrauka Geležinkelių transportas, konkuruodamas su kitomis transporto rūšimis, privalo gerinti keleivių ir krovinių vežimų kokybę. Norint greitai, efektyviai ir saugiai vežti keleivius ir krovinius, būtina taip prižiūrėti geležinkelių kelius, kad jų geometrinių parametrų nuokrypiai neviršytų leidžiamųjų nuokrypių. Apie tikrąją geležinkelių kelio būklę duomenys gaunami kelmačiu išmatavus septynių geometrinių parametrų sklaidą. Šiame darbe pateikta geležinkelio kelio geometrinių parametrų sklaidos nustatymo ir vertinimo metodika, kurioje įrodyta, kad kelio kokybės indeksas (KKI) yra septynių geometrinių parametrų dispersijų suma. Eksperimentiškai ištyrus dviejų geležinkelio kelių A (8 km) ir B (11 km) trijų metų laikotarpiu (nuo 2015 iki 2017 metų) visų 12 mėnesių KKI, nustatyta jų kokybės dinamika (kaita bėgant laikui). Šie duomenys rodo, kad ištyrinėtų A ir B ruožų kelio kokybė buvo gera, bet dėl didėjančios pervežtų krovinių suminės masės (megatonų skaičiaus) turi tendenciją blogėti.

scholarly journals STUDY OF TRANSPORTATION PROCESS AS A FACTOR OF RAILWAY TRACK OPERATION

2020 ◽  
pp. 60-65
Author(s):  
М. А. АРБУЗОВ ◽  
Є. В. АРБУЗОВА
Keyword(s):  
Lateral Force ◽  
Railway Track ◽  
Rolling Stock ◽  
Operational Parameters ◽  
Rail Head ◽  
Rolling Surface ◽  
Transportation Process ◽  
Longitudinal Slope ◽  
Technical Systems ◽  
Regional Branch

Abstract. The transportation process depends on the state of the technical systems involved. Technical systems depend on the organization of the transportation process. The paper considers the influence of operational parameters on the condition of the railway track. To study this problem, the most difficult section of the Slavsko-Lavochne-Beskid-Volovets track was chosen at the Lviv Railway regional branch. The influence of the missed tonnage, radius of the curve, longitudinal slope, speed and increase of the outer rail on the lateral wear of the rail head was investigated. It is established that all factors are influential. But the most influential - the longitudinal slope, in second place - speed, in third place - the radius of the curve. The effect of the slope on the rise was greater than the effect of the slope on the descent 3.3 times. A multiparametric mathematical law is established, which reflects the process of lateral wear of the rail head depending on the operational factors. This function allows you to predict the amount of lateral wear of the rail. Significant deviation of actual wear from the calculated, called excessive wear. From the analysis of data of the regional branch "Lviv Railway" it follows that 40% of the curved sections of the track with excessive wear are located on the section Slavsko-Lavochne-Beskid-Volovets. During the Lavochne-Beskid 1629 km pk9 race on the odd track, the test section of the track was equipped with strain gauges and prognometers, which were installed in the places of the smallest and largest lateral wear. There was an increase of 34% in lateral force in the cars in front of the pusher locomotive. No exceedance was detected. Observations at the Lavochne-Beskid race showed that the rolling stock was moving at a speed of 35 km/h. Thus, the established speed of movement of freight trains makes 60 km / h and during calculations is accepted as the minimum freight. That is, there is an under-realization of speed. Calculations show that this reduces the service life of the rails by 38%. Metal ingots in the shape of a wheel crest and a rolling surface were also found in the track. These ingots, formed from scales and drops of metal, are formed as a result of excessive braking in the pass sections, which is a consequence of the heavy weight of the train and steep descents. The paper develops recommendations for the transportation process in areas of complex plan and profile.

scholarly journals Investigation on the Surface Settlement for Curved Shield Construction in Sandy Stratum with Laboratory Model Test

2021 ◽  
Author(s):  
Ping Xu ◽  
Danhui Xi
Keyword(s):  
Similarity Theory ◽  
Surface Settlement ◽  
Small Radius ◽  
Shield Tunnel ◽  
Laboratory Model ◽  
Curvature Radius ◽  
Small Curvature ◽  
Practical Engineering ◽  
Turning Radius ◽  
Laboratory Model Test

Abstract According to the existing practical engineering data, the settlement curve of shield tunnel with small curvature radius is obviously different from that of straight tunnel, so using Peck formula to forecast the surface settlement is not applicable. This paper describes results from a series of the laboratory test based on similarity theory carried out in sandy soil. According to the test results, the characteristics of surface settlement caused by small radius tunnel excavation are summarized, and the effects of turning radius and buried depth on the surface settlement are demonstrated. Based on Gaussian formula, a method to forecast the surface settlement caused by construction of shield tunnel with small curvature radius is developed.

Regionální a environmentální souvislosti plánované výstavby vysokorychlostních tratí v České republice

2020 ◽  
Author(s):  
Milan Viturka ◽  
Vilém Pařil
Keyword(s):  
High Speed ◽  
Natura 2000 ◽  
Rail Transport ◽  
Operational Parameters ◽  
High Speed Rail ◽  
The Czech Republic ◽  
Significant Stimulation ◽  
Rail Infrastructure ◽  
Development And Environment ◽  
Important Basis

The paper presents the results of evaluation of the effectiveness of construction of four planned high-speed rail/HSR routes in the Czech Republic based on their potential impacts on development and environment of the relevant NUTS 3 regions (kraje) expressed by criteria of stimulation and sustainability. The methodology developed for the evaluation of the first criterion includes the most important segments of road and rail infrastructure assessed on the basis of relevant technical and operational parameters (the significance of road and rail transport was set at 5.5: 1). As regards the second criterion, the used methodology takes into account the potential impacts of construction on protected areas of European importance Natura 2000. According to the research results, the most significant stimulation effects can be expected for the RS 3 route Praha – Plzeň (München) and the longest RS 1 route Praha – Brno – Ostrava (Katowice). In the case of the sustainability criterion, the RS 3 route was again evaluated as the best and on the contrary, the RS 1 route was evaluated as the worst, i.e. the most environmentally conflicting. The obtained results represent an important basis for setting construction priorities.

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