Technical and economic efficiency of the heating units introduction in the technology of temperature stresses discharge in rail lashes
https://doi.org/10.52170/1815-9265_2024_69_13
Abstract
Seamless rail lashes are the main element of a typical seamless railway track construction. The discharge of thermal stresses in seamless lashes is one of the most common and labour-intensive operations in the track facilities of Russian Railways.
Currently, two main types of technological processes are known, using: hydraulic tension device (GNU); GNU and heating units (removable heating units that have recently begun to be used).
Four main paired options for the technology of discharging thermal stresses of rail lashes were identified for further technical and economic analysis of the results for a number of technological and economic indicators: with the use of HPU (KB-65, JBR-65); GNU (JBR-65SH, JBR-65PSHM, JBR-65PSHR); GNU and heating units (KB-65, JBR-65); GNU and heating units (JBR-65SH, JBR-65PSHM, JBR-65PSHR). A methodology has been developed for determining and evaluating the technical and economic indicators of technologies, taking into account a number of factors: labour costs for employees, fuel costs, annual equipment maintenance costs, average costs for providing “windows”.
The introduction of heating units into the technology of discharging thermal stresses in seamless lashes has a high technological efficiency than existing technologies, so the reduction in the “window” time was up to 16.7 %, and the reduction in labour costs was up to 4 %, and the amount of payment is also reduced labour and the average cost of holding a “window”. The reduction in the total economic costs of the technology for discharging thermal stresses of seamless lashes due to the introduction of heating units is up to 42 %, and in the future these technologies can successfully replace similar technologies currently existing in the track facilities of Russian Railways.
About the Authors
A. I. Mukhamedzyanova
Siberian Transport University
Russian Federation
Russian Federation
Alina I. Mukhamedzyanova – fifth-year student of the Railway Construction Faculty
Novosibirsk
D. V. Velichko
Siberian Transport University
Russian Federation
Russian Federation
Dmitriy V. Velichko – Associate Professor of the Track and Track Facilities Department, Candidate of Engineering, Associate Professor
Novosibirsk
R. A. Komardinkin
Siberian Transport University
Russian Federation
Russian Federation
Roman A. Komardinkin – postgraduate of the Track and Track Facilities Department
Novosibirsk
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Review
For citations:
Mukhamedzyanova A.I., Velichko D.V., Komardinkin R.A. Technical and economic efficiency of the heating units introduction in the technology of temperature stresses discharge in rail lashes. Bulletin of Siberian State University of Transport. 2024;(2):13-22. (In Russ.) https://doi.org/10.52170/1815-9265_2024_69_13
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