January 2022
·
12 Reads
MINING INFORMATIONAL AND ANALYTICAL BULLETIN
This page lists works of an author who doesn't have a ResearchGate profile or hasn't added the works to their profile yet. It is automatically generated from public (personal) data to further our legitimate goal of comprehensive and accurate scientific recordkeeping. If you are this author and want this page removed, please let us know.
January 2022
·
12 Reads
MINING INFORMATIONAL AND ANALYTICAL BULLETIN
January 2021
·
8 Reads
MINING INFORMATIONAL AND ANALYTICAL BULLETIN
November 2020
·
121 Reads
·
1 Citation
IOP Conference Series Materials Science and Engineering
Significant portion of the annual calendar fund-time work of mining excavators spent on maintaining its working condition by carrying out preventive and repair regulatory activities and recovery in the event of emergency failures and maintenance and repair expenses constitute a significant proportion of the cost of excavation of mining rock. To assess the effectiveness of machinery a non-standard indicator, the coefficient of technical readiness, applied which does not have a single assessment methodology. At the present stage of machinery development, existing quarry dispatching systems allow you to allocate any of its elements from the fund-time of mining excavators: productive time, time spent in repair and maintenance and also classify other time costs of a particular machine which allowed an appropriate analysis. Analysis showed that at the current organization of MaR (maintenance and repair) there is significant potential to reduce repair impacts, as well as to ensure a reduction in the cost of routine maintenance, to remove maintenance and repair measures from the category of costly ones, at least for self-sufficiency without compromising the quality of these works and the reliability of the excavator as a whole.
April 2020
·
69 Reads
·
4 Citations
Journal of Physics Conference Series
As a result of the studies, the possibility of assessing the state of the working surfaces of mining machines, in particular bearing assemblies as a whole without disassembling the gearbox, is confirmed. An innovative solution in this matter is to ensure the delivery of the lubricator to tribolcoupling through the channels of the lubrication system, according to its state, determined by the size of the acoustic signal of the ultrasonic range in the friction pair.
January 2020
·
5 Reads
MINING INFORMATIONAL AND ANALYTICAL BULLETIN
July 2019
·
739 Reads
·
5 Citations
IOP Conference Series Materials Science and Engineering
Currently in the mining industry there is an observed increase in demand for portable lubrication and filling units used by technical maintenance and repair of different quarry machinery. These oil-servicing mobile workshops provide the possibility to organize maintenance at facilities, situated far from each other, and quick delivery of everything necessary for technical maintenance and repair at mining machines and equipment operation location.
July 2019
·
32 Reads
·
7 Citations
IOP Conference Series Materials Science and Engineering
An experiment was conducted to confirm the reliability of the evaluation of the technical condition of transmission elements during operation in terms of the magnitude and nature of the acoustic emission signal, while completing the negative effect of the artificial environment on the durability of the transmission elements. Thus, the results of the experiment are presented where the acoustic emission signal in the friction pair was changed depending on the pressure value in the contacting pair and the angular velocity value. The possibility of obtaining an estimate of the technical state of the transmission elements during its operation in terms of acoustic and emission characteristics has been experimentally confirmed.
January 2019
·
5 Reads
·
4 Citations
MINING INFORMATIONAL AND ANALYTICAL BULLETIN
... As a result of the conducted research, it is possible to obtain iron-containing products that can become alternative raw materials [43][44][45][46][47]. This corresponds to the Action Plan for the development of the mineral resource base of Russia [48][49][50]. ...
April 2020
Journal of Physics Conference Series
... Как видно из анализа рис. 1, наиболее критичными являются эргатический, технический и климатический факторы, в сумме составляя 77%, при этом наиболее весомым является эргатический фактор. Вышеуказанные факторы определяют собственно конкретные отказы и возникновение дефектов в системах и оборудовании карьерного экскаватора ЭКГ-18Р/20К [16][17][18][19]. Анализ отказов экскаваторов по основным механизмам и системам представлен на рис. 2. ...
January 2019
MINING INFORMATIONAL AND ANALYTICAL BULLETIN
... Eyre [4] (1978) afirmou que, o desgaste abrasivo encontrado em instalações industriais, correspondem a cerca de 50% dos casos em que há desgaste em equipamentos ou componentes. Nesse sentido, o objetivo da pesquisa é analisar comparativamente a resistência ao desgaste do aço SAE 1020 lubrificado com condicionador de metais e graxa a base de lítio, considerando que, no sistema produtivo de mineração a maioria do maquinário possui condições de operação severas, com altos gradientes de pressão e temperatura, minério em suspensão, umidade, entre outros (Safronchuk [5], 2019). O aço SAE 1020 é o mais utilizados em componentes e sobressalentes por possuir uma ótima relação custo/benefício, mas é necessário que a lubrificação seja realizada de forma adequada para evitar o desgaste prematuro da superfície dos componentes. ...
July 2019
IOP Conference Series Materials Science and Engineering
... Therefore, the acoustic signal excited in the layered coal-rock mass is the superposition of its own (resonant) elastic vibration in each individual layer. In the process of coal mining, the cutting mechanism of the running mining equipment is used as the source of acoustic vibration [20]. Taking the working face as an example, the acoustic vibration excites near the working face, with propagation to the deep coal body and the sound wave passing through the medium with variable parameters. ...
July 2019
IOP Conference Series Materials Science and Engineering