Investigation of the relationship between reliability of track mechanism and mineral dust content in rocks of lignite open pits

• Autorzy: Djurić R. , Milisavljević V.

Identyfikatory

DOI

10.17531/ein.2016.1.19

Warianty tytułu

PL

Badanie związku między niezawodnością podwozia gąsienicowego a zawartością pyłów mineralnych w skałach kopalni odkrywkowych węgla brunatnego

• Języki publikacji: EN

Abstrakty

EN

This paper describes a mathematical relation which is developed to estimate the occurrence of track mechanism failure in function on the mineral dust (SiO2) content, i.e. wear intensity. This relation is based on actual data of track-type machine (bulldozers) failures, the properties of rocks and measurements of wear intensity on the upper rollers of track mechanism. Failures of bulldozers were recorded during the period of 12 months on six open pits in Serbia, together with their location which is correlated rock type and SiO2 content. This enabled establishment of the reliability indicators using two-parameter Weibull distribution. Further on, correlation is interpreted based on the linearization model using the method of least square. This research has impact on proper management of track-type machines operating on lignite open pits, in the sense of predicting time to failures and cost of maintenance of these machines. This approach provided guidelines for the establishment of reliability centered maintenance model.

PL

Artykuł opisuje relację matematyczną, która pozwala oszacować czas do wystąpienia uszkodzenia podwozia gąsienicowego w funkcji zawartości pyłu mineralnego (SiO2), czyli intensywności zużycia. Relacja ta została oparta na rzeczywistych danych o uszkodzeniach maszyn gąsienicowych (spycharek) i właściwościach skał oraz na pomiarach intensywności zużycia rolek podtrzymujących (górnych) podwozia gąsienicowego. Uszkodzenia koparek rejestrowano przez okres 12 miesięcy w sześciu kopalniach odkrywkowych w Serbii. Obserwacje prowadzono w kopalniach o lokalizacji podobnej pod względem występujących typów skał i zawartości SiO2. Pozwoliło to na wyznaczenie wskaźników niezawodności przy pomocy dwuparametrycznego rozkładu Weibulla. Omawianą korelację interpretowano na podstawie modelu liniowego z zastosowaniem metody najmniejszych kwadratów. Przedstawione badania mają znaczenie dla właściwego zarządzania maszynami gąsienicowymi pracującymi w kopalniach odkrywkowych węgla brunatnego, jako że pozwalają na przewidywanie czasu do uszkodzenia oraz kosztów utrzymania tych maszyn. Prezentowana metoda zawiera wytyczne do opracowania niezawodnościowego modelu utrzymania ruchu.

Słowa kluczowe

EN

maintenance engineering; reliability function; abrasive wear; mineral dust; bulldozer; track mechanism

PL

inżynieria utrzymania ruchu; funkcja niezawodności; ścieranie; pył mineralny; spychacz; podwozie gąsienicowe

• Wydawca: Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne
• Czasopismo: Eksploatacja i Niezawodność
• Rocznik: 2016
• Tom: Vol. 18, no. 1
• Strony: 142--150
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Djurić R.

• Electric Power Industry of Serbia Nikole Tesle 5-7 12208 Kostolac, Serbia

autor

Milisavljević V.

• University of Belgrade Faculty of Mining and Geology Djusina 7, 11000 Belgrde, Serbia

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