Changes in operating time of modern domestic EKG exсavators in dependence of their functioning conditions
- Ph.D., Dr.Sci. professor Saint-Petersburg Mining University
Abstract
Domestically produced opencast excavators are shown to be serious competition for foreign hydraulic machinery. It is suggested to estimate the potential of an opencast excavator via its basic operation effectiveness factor equal to the ratio of the scoop payload to the nominal cost of excavator operations under its normal operational conditions. Comparing the theoretical values of standard operations of hydraulic excavators of the third type-and-size group during coal mining with domestically produced EKG-18R on their operation effectiveness factor shows that the excavator exceeds foreign hydraulic models from that group 2.7-3.3 times. Theoretical foundation is provided for a complex of factors that affect the operating time of single scoop open- cast excavators, a structure is offered for the model of comprehensive assessment of operating time for opencast excavators. Complex indicators are substantiated and proposed for supporting operational effectiveness of such excavators. Assessment is offered of operational effectiveness of EKG-18R excavators following the criterion of energy consumption per excavation of a unit of rock mass. Generalization analysis is given of a set of factors that affect the value of operating time for EKG-18R excavators. Proposals are put forward on upgrading the regulations for technical maintenance and repairs of EKG-18R excavators. The task of assessing the technical state of machinery calls for using integral criteria that would enable one to identify the current technical state and the residual resource of machine aggregates, their failure potentially resulting in emergency situations accompanied by considerable property damage. It is feasible to use an integrated indicator of the degree of degradation of s machinery item for such an integrated indicator, retrieved in the course of assessing the current technical state of that item during diagnostic procedures. In its turn, such and integral indicator of the state of an item is defined by the averaged value of diagnostic indicators reduced to their basic values with the account of their individual weight factors.
References
- Ganin A.R., Donchenko T.V., Shibanov D.A. Practical results of implementing new product line of excavators «IZ KARTEX» LLC at mining enterprises of Russia. Gornaja promyshlennost'. 2013. N 2, p.6-9 [in Russian].
- Ganin A.R., Donchenko T.V., Shibanov D.A. Modern engineering solutions and practical experience in operating EKG-18R/20К opencast excavators by «IZ KARTEX». Gornoe delo. 2014. N 1(2), p.40-47 [in Russian].
- Shibanov D.A., Shishljannikov R.A., Ivanova P.V., Ivanov S.L. Comprehensive assessment of factors defining the operating time for EKG excavators of new product line by «IZ KARTEX». Gornoe oborudovanie i jelektromehanika. 2015. N 9 (118), p.3-9 [in Russian].
- Kantovich L.I., Getopanov V.N. Mining machines. Moscow: Nedra, 1989, p.304 [in Russian].
- Andreeva L.I., Krasnikova T.I., Davletshina D.R., Baranova E.S. Increasing the efficiency and repair works of mining enter prise with the account of audit results. Gornoe oborudovanie i jelektromehanika. 2014. N 4, p.28-32 [in Russian].
- Mahno D.E., Shadrin A.I. Operation and repairs of mechanical shovels in the conditions of the North: Reference guide. Moscow: Nedra, 1992, p. 127 [in Russian].
- Morozov V.I., Lazarev G.K. Operation and repairs of mechanical shovels in the conditions of the North: Reference guide. Mirovaja gornaja promyshlennost'. 1996, p.48-52 [in Russian].
- Paduchin D.A., Ivanov S.L. Comparative analysis of single scoop opencast excavators with mechanic and hydraulic volume drives. Tehnicheskie nauki – ot teorii k praktike: Sb. statej LVII Mezhdunar. nauch.-prakt. konf. Novosibirsk: SibAK. 2016, p.37-42 [in Russian].
- Podjerni R.Ju. Mechanical equipment for opencast mines: Moscow: Izd-vo «Majning Media Grupp», 2013, p.594 [in Russian].
- Podjerni R.Ju., Bules P. Comparative analysis of hydraulic and mechanic excavators with direct scoop. Gornyj zhurnal. 2015. N 1, p.55-61 [in Russian].
- Podjerni R.Ju., Bules P. Economic and probabilistic model of assessing the costs of operations, technical maintenance and optimal service lifetime of opencast hydraulic excavator . Gornaja promyshlennost'. 2015. N 6, p.52-54 [in Russian].
- Reshetnikov S.O., Ivanov S.L. Development of technical maintenance system for technological equipment to upgade its reliability. Innovacii na transporte i v mashinostroenii: Sb. tr. 4-j Mezhdunar. nauch.-praktich. konf. Vol.3. Nacional'nyj mineral'no-syr'evoj universitet «Gornyj». St. Petersburg, 2016, p.48-51 [in Russian].
- Samolazov A.V., Donchenko T.V., Shibanov D.A. Practical results of implementing EKG-18R and EKG-32Р excavators by «P.G.Korobkov IZ KARTEX» LLC at coal mining enterprises of Russia. Ugol'. 2013. N 4, p.36-38 [in Russian].
- Shibanov D.A., Ivanov S.L., Fokin A.S., Zvonarev I.E. Upgrading the strategy of technical service ofopencast excavators by introducing the elelments of Total Productivity Maintenance into the maintenance and repairs system. Zapiski Gornogo instituta. 2014. Vol.209, p.109-115 [in Russian].
- Shibanov D.A., Ivanov S.L., Zvonarev I.E. Effect of operational factors of opencast excavators on their technical state. Social'no-jekonomicheskie i jekologicheskie problemy gornoj promyshlennosti, stroitel'stva i jenergetiki: Sb. nauch. tr. 9-j Mezhdunar. konf. Vol.1. BNTU, Minsk. 2013, p.430-433 [in Russian].
- Shibanov D.A., Ivanov S.L., Ivanova P.V. Effectiveness and operational and opencast excavator. Nauka i obrazovanie v zhizni sovremennogo obshhestva: Sb. nauch. tr. Chast' 3. Tambov: OOO «Konsaltingovaja kompanija Jukom», 2015, p.158-160 [in Russian].
- Shibanov D.A., Ivanova P.V., Ivanov S.L. Tariffication of influencing factors fo modern opencast excavators according to excavation costs of rock mass. Opencast mining in the XXI century. Gornyj informacionno-analiticheskij bjulleten'. Special'nyj vypusk. 2015. N 45-2, p.24-33 [in Russian].