Mobile lubrication and filling units to reduce mining machines and equipment downtime when providing maintenance

Safronchuk, K. A.; Knyazkina, V. I.; Иванов, С.Л.

doi:10.1088/1757-899x/560/1/012088

Cited by 3 publications

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“…В комплектацию новых машин карьеров стала повсеместно входить автоматическая централизованная система смазки (АЦСС), обеспечивающая точное дозирование необходимого количества смазочного материала в узлы трения и фрикционные соединения [14,37,20]. Экспериментально доказано, что трение основных узлов современной горнопромышленной техники, работающей в условиях высоких нагрузок, может снижаться только при непрерывном смазывании [27,42]. Регулярная ручная смазка большого числа точек приводит к простою горных машин и оборудования.…”

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“…Регулярная ручная смазка большого числа точек приводит к простою горных машин и оборудования. Смазочное вещество подается в избытке либо в недостаточном количестве, вследствие чего эффективность процесса смазывания узлов не достигает заданного уровня [39,42]. Например, 80 % отказов подшипников связано с ненадлежащей смазкой и с загрязнениями смазочного вещества [13].…”

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“…Обеспечение нормальной работы систем смазки горных машин -не единственная проблема надежного функционирования техники [40]. Централизованные системы смазки требуется заправлять, менять смазочно-охлаждающие жидкости, смазки трансмиссий, пополнять маслом и горюче-смазочными материалами (ГСМ) экскаваторную, буровую, погрузочнодоставочную технику, отличающуюся малой мобильностью, заправлять, дозаправлять и менять рабочие жидкости гидросистем горных машин [26,42].…”

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Justification and selection of design parameters of the eccentric gear mechanism of the piston lubrication and filling unit for the mining machines maintenance

Иванов

Safronchuk

Olt

2021

PMI

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Piston pumps are widely used in the lubrication systems of mining machines. When carrying out technical maintenance (MOT), including lubrication and filling works, at the site of operation of mining machines due to the remoteness from repair shops and warehouses of fuels and lubricants (FAL), mobile repair shops (MRS), maintenance units (MU) and mechanized filling units (MFU) are used. The specificity of carrying out maintenance is to create conditions for the supply of oils, working fluids and lubricants to the corresponding systems of mining machines for their refueling. Existing piston pumps and pumping units, as a rule, are single-flow, and the piston is driven by a crank mechanism driven from the engine through a worm gear. The emergence of unique, hydraulic, low-mobility mining machines in open pit mining required a significant increase in the power of the MU and MFU oil pumping units, primarily for greases. However, the traditional design of the drive design of a crank-type piston pump unit at a power of over 80 kW does not allow achieving the specified operating time, it is accompanied by intensive wear of the drive elements and increased dynamics during operation. In addition, it is necessary to apply various designs of pumping units for the supply of liquid and grease lubricants. Thus, it is necessary to develop new circuit solutions for pumping units of the crank type, to improve mobile refueling facilities with a modernized design of the pump unit drive of the mobile lubrication and filling station MRS.

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Justification and selection of design parameters of the eccentric gear mechanism of the piston lubrication and filling unit for the mining machines maintenance

Иванов

Safronchuk

Olt

2021

PMI

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Digital technologies in modeling and design of mining excavators

Shibanov

Иванов

Shishkin

2021

J. Phys.: Conf. Ser.

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Development and application of digital technologies at the stage of new model design is highly relevant. Manufacture of a testbed vehicle and its full-scale pilot testing is impossible for Russian manufacturers of mining excavators due to a high cost of a prototype and a lack of special testing grounds. In order to reduce the risks of machine builders as vehicle manufacturer and those of MPPs as users of the prototype excavator, it is necessary to introduce and develop the digital twin technology at the stage of designing new models. A general reference point in development of the digital twin of a mining excavator is minimizing human input. Due to integration of works by stages of creation of the digital twin in a form of an information diagnostic system, there is a possibility to manage the life cycle of the product and optimize MRO with accounts of actual conditions and operating modes.

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Adapting standard maintenance approaches for mining excavators to actual operating condition

Shibanov¹,

Иванов²,

Safronchuk

et al. 2020

IOP Conf. Ser.: Mater. Sci. Eng.

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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.

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Mobile lubrication and filling units to reduce mining machines and equipment downtime when providing maintenance

Cited by 3 publications

References 0 publications

Justification and selection of design parameters of the eccentric gear mechanism of the piston lubrication and filling unit for the mining machines maintenance

Justification and selection of design parameters of the eccentric gear mechanism of the piston lubrication and filling unit for the mining machines maintenance

Digital technologies in modeling and design of mining excavators

Adapting standard maintenance approaches for mining excavators to actual operating condition

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