Succession of technology and skill to the next generation for maintenance and repair of rolling stock : Through an example of heritare railway in Japan

2002 ◽  
Vol 2002.11 (0) ◽  
pp. 425-426
Author(s):  
Ichiro TSUTSUMI
Keyword(s):  
Rolling Stock ◽  
Next Generation ◽  
Maintenance And Repair

INVESTMENTS IN THE LOCOMOTIVE COMPLEX INFRASTRUCTURE. INFRASTRUCTURE NEEDS PLANS AND FORECASTS

2020 ◽  
Vol 1 (4) ◽  
pp. 106-110
Author(s):  
A. G. YEROYAN ◽  
Keyword(s):  
Significant Role ◽  
Rolling Stock ◽  
Infrastructure Development ◽  
Electric Locomotive ◽  
Maintenance And Repair ◽  
Technological Readiness ◽  
Railway Industry ◽  
Locomotive Repair

In connection with the prospects for the development of the railway industry until 2030, a significant role in improving the technological readiness of maintenance and repair of traction rolling stock belongs to diesel, electric locomotive repair and service depots. The article considers the main directions of development and modernization of the locomotive complex infrastructure. Possible methods of financing mechanisms for investment in infrastructure development have been identified.

Analysis of technological preparation of enterprises for maintenance and repair of railcars

Innotrans ◽  
2020 ◽  
pp. 44-50
Author(s):  
Vasily F. Lapshin ◽  
◽  
Elena V. Zelyukova ◽  
Oksana A. Mironova ◽  
◽  
...  
Keyword(s):  
Scientific Organization ◽  
Rolling Stock ◽  
Car Industry ◽  
Factors Affecting ◽  
Maintenance And Repair ◽  
Technological Processes ◽  
Level Of Automation ◽  
Technological Preparation ◽  
Technological Documentation

The paper analyzes the technological preparation of production at the railcar enterprises in terms of developing technological processes and processing sets of technological documents. Factors affecting the quality of technological preparation of production for maintenance and repair of rolling stock are considered. In contrast to the previously performed works, where the assessment of the level of technological training was carried out by experts of a scientific organization, the initial data in the article were the results of a survey of specialists of technical departments of structural divisions of the car industry of the Sverdlovsk and South Ural Railways. Based on the method of expert qualimetry, the weight of factors that have the greatest impact on the quality of technological processes is estimated. As a result of the survey, a low level of automation of design processes was established, which consists mainly in the design of technological documentation. It is shown that the degree of depth of development and detail of technological processes is at the level of the route description

Maintenance and repair of rolling stock*

2008 ◽  
Vol 22 (9) ◽  
pp. 627-634
Author(s):  
V. Esposito ◽  
S. Nocchia
Keyword(s):  
Rolling Stock ◽  
Maintenance And Repair

The next generation material for lightweight railway car body structures: Magnesium alloys

2016 ◽  
Vol 232 (1) ◽  
pp. 25-42 ◽  
Author(s):  
Woo Geun Lee ◽  
Jung-Seok Kim ◽  
Seung-Ju Sun ◽  
Jae-Yong Lim
Keyword(s):  
Friction Stir Welding ◽  
Magnesium Alloys ◽  
Structural Performance ◽  
Rolling Stock ◽  
Next Generation ◽  
Friction Stir ◽  
Car Body ◽  
Body Construction ◽  
Gradient Based ◽  
Low Stiffness

While magnesium alloys have the attractive attributes of low density, the application of the metal in transportation industries has been restricted by its low stiffness and strength. The aim of this study was to examine the possibility of lightweight railway car body construction using magnesium alloys from the structural and manufacturing perspectives. Extruded members, making up a car body, were designed employing a gradient-based optimization algorithm. And then, numerical simulations were conducted to confirm the structural performance of the newly designed car body. In addition, one of the designed members was extruded and joined with another via friction stir welding in order to verify its fabrication potential. The work demonstrated that, with just 85% of the weight of an aluminium car body currently in operation, a magnesium-based railway car body can be potentially constructed by extrusion followed by friction stir welding for the next generation rolling stocks; that is to say, the weight saving amount is 10% of the total bare frame weight, or 2% of its total rolling stock weight.

scholarly journals SCIENTIFIC APPROACH TO THE METHODS OF INCREASING THE LIFE CYCLE OF WHEELS OF RAILWAY VEHICLES

2021 ◽  
Vol 1 (38) ◽  
pp. 164-172
Author(s):  
S. Sapronova ◽  
V. Tkachenko ◽  
N. Braikovska ◽  
Y. Zub
Keyword(s):  
Life Cycle ◽  
Traffic Safety ◽  
Technical Condition ◽  
Rolling Stock ◽  
Optimal Parameters ◽  
Maintenance And Repair ◽  
Complete Restoration ◽  
Scientific Approach ◽  
Wheel Profile ◽  
Railway Rolling Stock

The value of the life cycle of rolling stock wheels is determined by the frequency of maintenance, in the process of which the turning is carried out to restore the profiles of the rolling surfaces, or the replacement of completely worn wheels. Traffic safety depends on the technical condition of the wheels of locomotives and wagons. Maintenance and repair of wheelsets accounts for about 30% of all costs of Ukrzaliznytsia's rolling stock repair units. Wheel repair technologies are based on the complete restoration of wheel profiles by turning, using which, their life cycle is reduced, and costs increase by 20% or more. The railways of Ukraine use an outdated, unreasonable, inefficient system of control over the formation of rolling surfaces in operation. Therefore, there is a need to create a scientifically sound approach to methods of extending the life cycle of the wheels of locomotives and wagons while ensuring the safety of railway rolling stock. According to the proposed scientific approach, the wheel profile is restored to optimal parameters, which provides an extended life cycle of wheelsets. As a result of the developed scientific approach the life cycle of wheel pairs will increase by 15… 25% and the expenses of the railway for their repair will considerably decrease.

scholarly journals The Basics of Developing an Alternative Concept for Commercial and Military Vehicle Operation (Random Strategy)

2021 ◽  
Vol 1 (2) ◽  
pp. 61-69
Author(s):  
Yeghiazar Vahram Vardanyan ◽  
Valerik Mamikon Harutyunyan ◽  
Karo Hakob Mosikyan ◽  
Vladimir Sahidovich Koichev
Keyword(s):  
Structural Characteristics ◽  
Rolling Stock ◽  
Repair Work ◽  
Maintenance And Repair ◽  
Stochastic Nature ◽  
Military Vehicles ◽  
Military Vehicle ◽  
Random Strategy ◽  
Vehicle Operation ◽  
Planning Strategies

The efficiency of commercial automobiles and wheeled military vehicles mainly depends on the choice of maintenance (M) and current repair (CR) concept. In the paper the difficulties of adapting the (M) and (CR) planning strategies to the structural characteristics of modern transport facilities are pointed out. The advantages of using the (M) and (CR) random strategy for transport facilities based on the stochastic nature of failures and malfunctions are substantiated. Considering the failures and malfunctions as random values and identifying the patterns of their distribution based on γ percentage resources, it is proposed to develop a list of regulated maintenance and repair work, periodicity and labor intensity based on a random strategy, which will increase the efficiency of preserving the technical resource of the rolling stock throughout the entire life cycle of the vehicle. 

scholarly journals RECONSTRUCTION OF INFRASTRUCTURE LLC "AVTOMIR"

2017 ◽  
Vol 21 (6) ◽  
pp. 32-43 ◽  
Author(s):  
E. V. Ageev ◽  
Yu. G. Alekhin ◽  
S. A. Grаshcow ◽  
N. V. Sarigo
Keyword(s):  
Power System ◽  
Production Capacity ◽  
Operating Conditions ◽  
The Body ◽  
Rolling Stock ◽  
Economic Activities ◽  
Maintenance And Repair ◽  
The Future ◽  
Technical Maintenance

The need for the reconstruction of existing auto service enterprises is caused by changes in the structure of the rolling stock, the design of cars and the conditions of their operation, increasing the requirements for the quality of rolling stock, the design of cars and their operating conditions, increasing the quality requirements for maintenance and repair, saving fuel and energy resources and quality assurance of the environment. In our case, the need to reconstruct the autoservice company LLC "Avtomir" is associated with the need to switch to maintenance and storage of new types of rolling stock, as well as changes in the dynamics of demand for cars. In LLC Avtomir there is no possibility of rendering services related to damage to the body of the car, which reduces the ability of the organization to receive additional income, as this type of damage owners of vehicles have to eliminate at other service stations. This fact puts the company in front of the need to create a paint and body shop in the future. The purpose of this work was the development of measures to reconstruct the infrasructure of LLC "Avtomir". The main results of the technological calculation of the enterprise are as follows: - the annual workload of the technical service station is 43529 man-hour; - annual scope of works of washing, maintenance, lubrication, adjusting for setting the angles of the front wheels, adjusting brakes, maintenance and repair of the power system, electrical, tire fitting 4913; 15235.2; 2176.5; 2611.7; 3917.6; 4353; 4353; 2285 and 914 man-hour respectively; - the annual volume of works at the tire fitting site, on the maintenance and repair site of the power supply system, electrical, maintenance units is 2133; 762; 4788.2 man-hour respectively; - necessary number of production workers for maintenance and technical maintenance 29 (technological) and 35 (staff), as well as the number of auxiliary 4 and engineering - technical 5 workers; - the necessary number of posts for washing, maintenance, lubricants, technical maintenance, adjusting for setting the angles of the front wheels, adjusting for the brakes, maintenance and repair of the power system, electrical 4; 1; 1; 1; 1; 1 and 1 respectively. Analysis of production and economic activities of the enterprise allowed us to identify the objectives of the enterprise, the dynamics of its development, the state of the production and technical base. This makes it possible to identify the main shortcomings in the functioning of the organization and to implement the formulation of new tasks that need to be solved in the future. Namely, LLC "Avtomir" needs to increase production capacity, namely the addition of a diagnostic post and one more car acceptance post. In addition, there is a need to implement the washing zone, and on the vacated area to arrange a painting and drying chamber and a preparation site for painting works.

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