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Improvement of Reliability of Executive Mechanisms of Railway Ice-Cars Compressors

[+] Author Affiliations
Guri Sharashenidze, Nikoloz Mgebrishvili, Sergo Sharashenidze

Georgian Technical University, Tbilisi, Georgia

Pavle Kurtanidze

Transcomgeorgia 21, Ltd., Tbilisi, Georgia

Mamuka Dolidze

Carline, Ltd., Rustavi, Georgia

Paper No. JRC2009-63007, pp. 5-11; 7 pages
doi:10.1115/JRC2009-63007
From:
  • 2009 Joint Rail Conference
  • 2009 Joint Rail Conference
  • Pueblo, Colorado, USA, March 4–5, 2009
  • Conference Sponsors: Rail Transportation Division
  • ISBN: 978-0-7918-4338-3 | eISBN: 978-0-7918-3842-6
  • Copyright © 2009 by ASME

abstract

A compressor of the ice-car refrigerating plant is characterized by uninterrupted operation that is necessary to maintain a refrigerating cycle in the car. A problem of operating lifetime, unfailing operation and reliability of the compressor depends on functional operation of its basic executive mechanism — crank mechanism. An original dynamic model of the executive crank mechanism is elaborated by the authors. Research of dynamical parameters of the executive crank mechanism according to real dynamic model is carried out. Phenomenon of variable eccentricity caused by the wear of hinges and conditions of its existence are established. Expressions corresponding to dynamical analysis are obtained. Use of the elaborated dynamic model in modern ice-car refrigerating plants ensures a significant economic effect — it decreases: planned repair expenses of refrigerating plants and compressors, ice-car downtime. At the same time it increases the length of the repair period and improves operating characteristics.

Copyright © 2009 by ASME

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