Vol.2, No 1, 2004 pp. 109 -124
UDC 621.87:622.23.08

PROCESSING THE LIFETIME OF BUCKET WHEEL EXCAVATOR PARTS IN STRIP MINE TECHNOLOGIES
Zoran Marinković, Goran Petrović
Mechanical Engineering Faculty, University of Niš
A. Medvedeva 14, 18000 Niš, Serbia and Montenegro

Abstract. The paper presents a complex model of calculating the parts of complex machine systems exposed to variable load and strain. This model includes calculation of operational safety and lifetime of parts, on the example of the bucket wheel excavator driving mechanism. The goal is to apply this calculation model to making safe and reliable machine systems, i.e. bucket wheel excavators, which will operate efficiently under complex exploitation conditions in coal mines.
Key Words: Bucket Wheel Excavator, Load, Operational Stress, Discretization, Lifetime.

PROCESIRANJE RADNOG VEKA ELEMENTA ROTO BAGERA U TEHNOLOGIJAMA POVRŠINSKIH KOPOVA
U radu je prikazan kompleksan model proračuna elemenata složenih mašinskih sistema, koji su izloženi promenljivom opterećenju i naprezanju. Ovaj model obuhvata proračun radne sigurnosti i radnog veka elemenata na primeru pogonskog mehanizma radnog točka roto bagera. Cilj je da se primenom ovog modela proračuna stvaraju sigurni i pouzdani mašinski sistemi, tj. roto bageri koji će efikasno raditi u složenim eksploatacionim uslovima površinskih kopova uglja.
Ključne reči: roto bager, opterećenje, radni napon, diskretizacija, radni vek.