E3S Web Conf.
Volume 174, 2020Vth International Innovative Mining Symposium
|Number of page(s)||7|
|Section||Innovations in Mining Machinery|
|Published online||18 June 2020|
Choosing and Explaining Methods of Non-Destructive Control of Gear Mechanisms in Imported Excavators
T. F. Gorbachev Kuzbass State Technical University, Department of informational and automated production systems, 650000 Kemerovo, 28 Vesennya st., Russian Federation
Kuzbass opencast coal mines use foreign produced excavators as basic equipment. Capital repair of these excavators involves complete replacement of all tooth wheel gearing in reduction gear boxes after 2~3 years of work (depending on operating time). The cost of this replacement is practically equal to the cost of new gear boxes. To minimize repair costs and extend service life of gear-tooth systems in gear boxes a methodology for monitoring technical state of gear boxes in imported mining equipment was developed. It allows to obtain reliable information about the level and significance of in-service defects in their elements. The research showed that the most reliable methods of control are visual and dimensional test (67%) and fluorescent-magnetic inspection (32%), and used together these two methods allow to detect up to 100% of significant defects. The most significant among service defects in typical elements of gearing systems are single and multiple cracks.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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