27 items

• 

  Geomechnical research for the new bucket wheel excavator testing at Open pit “Filijala” cite

  Vladimir Čebašek, Nebojša Gojković, Veljko Rupar, Miodrag Pribićević (2020)

  Since 1976 cement marl excavation at open-pit mine „Filijala” is carried out by continuous exploitation technology using bucket wheel excavator SH 400 manufactured by Orenstein und Koppel (O & K) company. Due to the bucket wheel excavator time-worn and high operating cost it was necessary to replace it with new one. In order to test the new bucket wheel excavator and prove its capacity a testing zone was defined as test block for excavation, in which the bucket wheel ...

  отпор на копање, лапорац, роторни багер

  Vladimir Čebašek, Nebojša Gojković, Veljko Rupar, Miodrag Pribićević. "Geomechnical research for the new bucket wheel excavator testing at Open pit “Filijala”" in Рударски гласник, Рударски институт - Београд (2020). https://doi.org/10.25075/BM.2020.07

• 

  Strateško odlučivanje pri izboru novih rotornih bagera za površinske kopove lignita: primer rudarskog basena Kolubara cite

  Predrag Jovančić, Stevan Đenadić, Goran Todorović, Dragan Novaković, Filip Miletić (2020)

  U ovom radu je dat primer izbora najpovoljnijih postojećih rotornih bagera u uslovima površinskih kopova RB Kolubara, zbog budućeg odlučivanja o optimalnom izboru bagera za rad na otkrivci, uglju i međuslojnoj jalovini. Korišćeni su parametri performansi specifičnog iskorišćenja mase i snage bagera, vremensko i kapacitetno iskorišćenje bagera, ali i specifični operativni troškovi rada rotornog bagera. Znajući da je ovo neka vrsta višekriterijumskog problema, iskorišćena je metoda TOPSIS za optimalno i tačno rangiranje rotornih bagera. Za analizu je korišćen period ...

  rotorni bager, koncept izbora, performanse, TOPSIS

  Predrag Jovančić, Stevan Đenadić, Goran Todorović, Dragan Novaković, Filip Miletić. "Strateško odlučivanje pri izboru novih rotornih bagera za površinske kopove lignita: primer rudarskog basena Kolubara" in XI simpozijum sa međunarodnim učešćem "Rudarstvo 2020", Vrnjačka Banja, Srbija, 8-11. septembar, Institut za tehnologiju nuklearnih i drugih mineralnih sirovina (Beograd), Privredna komora Srbije (Beograd) (2020)

• 

  Effectiveness Analysis of Different Bucket-wheel Excavators cite

  Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić (2021)

  Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...

  bucket-wheel excavator, open-pit coal mine, mining, multi-criteria decision methods

  Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić. "Effectiveness Analysis of Different Bucket-wheel Excavators" in 8th International Conference Mining and Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)

• 

  Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry cite

  Steven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti (2021)

  Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...

  self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalization

  Steven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti. "Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry" in SSRN Electronic Journal, Elsevier BV (2021). https://doi.org/10.2139/ssrn.3945979

• 

  Утицај похабаности резних елемената роторног багера на ниво вибрација погона за копање cite

  Филип Милетић (2023)

  У докторској дисертацији је анализиран утицај похабаности резних елемената роторног багера на потрошњу електричне енергије и ниво амплитуде вибрација погона за копање. Креиран је модел који у функцији стања резних елемената дефинише зависност разматраних физичких феномена. За развој модела примењене су једначине теорије осцилација и Ватметарска метода [1] којом се одређује потрошња електричне енергије. За верификацију модела извршена су мерења на роторном багеру SRs2000.32/5+VR ангажованом на откопавању откривке на површинском копу Тамнава–Западно поље. Обављено је пет мерења. Резни елементи су ...

  роторни багер, резни елементи, хабање, вибрације, потрошња електричне енергије

  Филип Милетић. Утицај похабаности резних елемената роторног багера на ниво вибрација погона за копање, Београд : [Ф. Милетић], 2023

• 

  Human factor risk management procedures applied in the case of open pit mine cite

  Snežana Kirin, Aleksandar Sedmak, Wei Li, Miodrag Brzaković, Igor Miljanović, Ana Petrović, Simon Sedmak (2021)

  Risk management aims to provide a controlled work environment to ensure the safe operation of the high-risk systems. It is a dynamic process which work in a continual state of change. The issue of human factor risk and rules and regulations in open pit mine is a main focus of this paper in order to develop predictive models of behavior of workers in relation to compliance with the procedures and rules. Presented survey was conducted in open pit coal ...

  Upravljanje rizikom, ljudski faktor, bager sa kašikom, metod konačnih elemenata

  Snežana Kirin, Aleksandar Sedmak, Wei Li, Miodrag Brzaković, Igor Miljanović, Ana Petrović, Simon Sedmak. "Human factor risk management procedures applied in the case of open pit mine" in Engineering Failure Analysis (2021). https://doi.org/https://doi.org/10.1016/j.engfailanal.2021.105456

• 

  Indeksi kontrole održavanja i korišćenja rotornog bagera cite

  Jovana Mitrović, Predrag Jovančić, Dragan Ignjatović, Stevan Đenadić, Filip Miletić (2023)

  Razvoj površinske eksploatacije se u velikom stepenu zasniva na svestranoj mehanizaciji rudarskih radova. Kako bi se zadovoljili potrebni kapaciteti, neophodna je primena savremene mehanizacije, velikih kapaciteta i pouzdanosti u radu. Naime, sa stepenom povećanja mehanizovanosti radova smanjuje se broj zaposlenih radnika, povećava produktivnost rada, smanjuju troškovi po jedinici proizvoda, a samim tim i povećava ekonomičnost površinske eksploatacije. Predmet istraživanja su rotorni bageri SRs 1200 koji predstavljaju samohodne mašine kontinuiranog dejstva namenjene za otkopavanje jalovine i korisne supstance na površinskim ...

  rudarstvo, rotorni bager, indeksi održavanja, indeksi korišćenja, TOPSIS

  Jovana Mitrović, Predrag Jovančić, Dragan Ignjatović, Stevan Đenadić, Filip Miletić. "Indeksi kontrole održavanja i korišćenja rotornog bagera" in XI Međunarodna konferencija "Ugalj i kritični minerali 2023", CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)

• 

  Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements cite

  Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović (2020)

  The capacity of the rotor excavator depends largely on the operation of the subsystem for digging. There is a great contribution to the correct and sharp teeth when the capacity is the highest. In the function of time, the teeth become clogged due to abrasive wear, or changes in their geometric shape. To analyze the bucket wheel drive in depend on wear of the cutting elements in this study adaptive neuro fuzzy inference system (ANFIS) approach was implemented. ANFIS ...

  Pogon rotornog točka, habanje, rezni elementi, ANFIS

  Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović. "Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements" in Advances in Engineering Software, Elsevier BV (2020). https://doi.org/10.1016/j.advengsoft.2020.102824

• 

  A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System cite

  Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić (2023)

  This paper presents a model for determining fuzzy evaluations of partial indicators of the availability of continuous systems at coal open pits using a neuro-fuzzy inference system. The system itself is a combination of fuzzy logic and artificial neural networks. The system availability is divided into partial indicators. By combining the fuzzy logic and artificial neural networks, a model is obtained that has the ability to learn and uses expert judgment for that learning. This paper deals with the ...

  системи, континуални системи експлоатације (роторни багер-транспортер-дробилично постројење), рударство, расположивост, меко рачунарство, фази логика, ANN, ANFIS

  Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić. "A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System" in Energies, MDPI AG (2023). https://doi.org/10.3390/en16072958

• 

  Dynamic behavior and stress field of excavator SchRs740 extended boom cite

  Petrović Branko, Petrović Ana, Ignjatović Dragan, Grozdanović Ines (2015)

  Petrović Branko, Petrović Ana, Ignjatović Dragan, Grozdanović Ines. "Dynamic behavior and stress field of excavator SchRs740 extended boom" in 7th International Scientific and Expert Conference of the International TEAM Societ, Beograd: (2015): 345-348

• 

  Dependability as the Criteria for Bucket Wheel Excavator Revitalization cite

  Tanasijević Miloš, Ivezić Dejan, Ignjatović Dragan, Polovina Dragan (2011)

  Tanasijević Miloš, Ivezić Dejan, Ignjatović Dragan, Polovina Dragan. "Dependability as the Criteria for Bucket Wheel Excavator Revitalization" in Journal of Scientific and Industrial Research 70 no. 1, Rajasthan, India:Scientific Publishers (2011): 13-19

• 

  Diagnostics of Bucket Wheel Excavator Discharge Boom Dynamic Performance and Its Reconstruction cite

  Brkić Aleksandar, Maneski Taško, Ignjatović Dragan, Jovančić Predrag, Spasojević Brkić Vesna (2014)

  Brkić Aleksandar, Maneski Taško, Ignjatović Dragan, Jovančić Predrag, Spasojević Brkić Vesna. "Diagnostics of Bucket Wheel Excavator Discharge Boom Dynamic Performance and Its Reconstruction" in Journal of Maintenance and Reliability 16 no. 2, :Polish Maintenance Society (2014): 188-197

• 

  Numerical and experimental diagnostic of dynamic behavior of the rotor-excavator construction cite

  Maneski Taško, Jovančić Predrag, Ignjatović Dragan, Milošević Mitić Vesna, Trišović Nataša (2011)

  Maneski Taško, Jovančić Predrag, Ignjatović Dragan, Milošević Mitić Vesna, Trišović Nataša. "Numerical and experimental diagnostic of dynamic behavior of the rotor-excavator construction" in Third Serbian (28th Yu) Congress on Theoretical and Applied Mechanics 1, Vlasina Lake:Serbian society of mechanics (2011): 629-636

• 

  Impact of the Bucket Wheel Support at Technical Parameters of the Block and Bucket Wheel Excavator Capacity cite

  Ignjatović Dragan, Petrović Branko, Jovančić Predrag, Bošković Saša (2014)

  Ignjatović Dragan, Petrović Branko, Jovančić Predrag, Bošković Saša. "Impact of the Bucket Wheel Support at Technical Parameters of the Block and Bucket Wheel Excavator Capacity" in 12th International Symposium Continuous Surface Mining – ISCSM2014 1, Aachen:Springer (2014): 73-82. https://doi.org/DOI: 10.1007/978-3-319-12301-1

• 

  Load bearing steel structure diagnostics on bucket wheel excavator, for the purpose of failure prevention cite

  Jovančić Predrag, Ignjatović Dragan, Tanasijević Miloš, Maneski Taško (2011)

  Jovančić Predrag, Ignjatović Dragan, Tanasijević Miloš, Maneski Taško. "Load bearing steel structure diagnostics on bucket wheel excavator, for the purpose of failure prevention" in Journal of Engineering Failure Analysis 18 no. 4, :Elsevier (2011): 1203-1211. https://doi.org/10.1016/j.engfailanal.2011.03.

• 

  Cutting elements of bucket wheel excavators in lignite opensast mines: Methodology and performed solutions cite

  Dragan Novaković, Predrag Jovančić (2016)

  Bucket and cutting elements geometry (teeth and hardened steel) have very powerful impact on effective operation of bucket wheel excavator, and that`s why, problems of optimal geometry of elements in specific conditions always are of special interest in mining science and technique. If we want to achieve satisfactory utilization of bucket wheel excavator, it is necessary to modulate geometry material characteristics and technological parameters, as regards bucket wheel excavator work regime, and bucket wheel working performances, and also bucket ...

  Dragan Novaković, Predrag Jovančić. "Cutting elements of bucket wheel excavators in lignite opensast mines: Methodology and performed solutions" in 13th International symposium Continuous Surface Mining ISCSM 2016, 12-14 September 2016, Belgrade – Serbia, Belgrade : Yugoslav Opencast Mining Committee, Belgrade (2016)

• 

  Relation between numerical model and vibration: behavior diagnosis for bucket wheel drive assembly at the bucket wheel excavator cite

  Jovančić Predrag, Tanasijević Miloš, Ignjatović Dragan (2010)

  Jovančić Predrag, Tanasijević Miloš, Ignjatović Dragan. "Relation between numerical model and vibration: behavior diagnosis for bucket wheel drive assembly at the bucket wheel excavator" in Journal of Vibroengineering 12 no. 4, :JVE International Ltd. (2010): 500-513

• 

  Optimizacija parametara reza rotornog bagera pri otkopavanju materijala sa povećanom čvrstoćom cite

  Saša D. Bošković (2016-09-09)

  Otkopavanje materijala rotornim bagerom je veoma sloţen fiziĉko-mehaniĉki proces. Pokazatelji efektivnosti tog procesa zavise od velikog broja raznovrsnih ĉinilaca od kojih se posebno mogu istaći: fiziĉko-mehaniĉke karakteristike materijala koji se otkopava, reţim rada bagera i izbor tehnoloških parametara bloka, odreska i reza, geometrije vedrica i zuba itd. Poseban problem se javlja kod otkopavanja materijala povećane ĉvrstoće, što je ĉest sluĉaj na našim površinskim kopovima. Dimenzionisanje specifiĉne sile kopanja bagera prema manjim masama izuzetno ĉvrstog materijala je neracionalno i rešenje ...

  rotorni bager, parametri reza, otpor na kopanje, dinamika bagera, kapacitet, optimizacija, specifična potrošnja energije

  Saša D. Bošković. "Optimizacija parametara reza rotornog bagera pri otkopavanju materijala sa povećanom čvrstoćom" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-09)

• 

  Development of the hybrid MCDM model for evaluating and selecting bucket wheel excavators for the modernization process cite

  Snezana Savkovic, Predrag Jovancic, Stevan Djenadic, Milos Tanasijevic, Filip Miletic (2022)

  This paper presents a methodology for evaluating and ranking different bucket wheel excavators (BWE) for determining which machine should enter in the process of revitalization and modernization. Various multicriteria methods are used. Combining them achieves the best effect when choosing BVE for the modernization process. AHP, TOPSIS, VIKOR, and PROMETHEE methods are used. The hybrid models are developed from the multi-criteria decision making (MCDM) methods and they are used to evaluate the basic indicators that characterize the operation of ...

  višekriterijumsko odlučivanje, rotorni bageri, modernizacija, ekspertska analiza

  Snezana Savkovic, Predrag Jovancic, Stevan Djenadic, Milos Tanasijevic, Filip Miletic. "Development of the hybrid MCDM model for evaluating and selecting bucket wheel excavators for the modernization process" in Expert Systems with Applications, Elsevier BV (2022). https://doi.org/10.1016/j.eswa.2022.117199

• 

  Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support cite

  Vesna Damnjanović, Predrag Jovančić, Snežana Aleksandrović (2017)

  Vesna Damnjanović, Predrag Jovančić, Snežana Aleksandrović. "Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support" in Journal of Vibroengineering (2017). https://doi.org/10.21595/jve.2016.17321