Vol.1, No 9, 2002 pp. 1241 - 1252
UDC 621.879.48:62-233.3
CALCULATION OF THE STRUCTURAL
ELEMENTS
OF THE BUCKET WHEEL EXCAVATOR WORKING
WHEEL TRANSMISSION
Dragan Milčić1, Slobodan Miladinović2
1Faculty of Mechanical Engineering,
University of Niš, Serbia and Montenegro
2Higher Technical School, Uroševac
- Zvečan, Serbia and Montenegro
Abstract. Bearing structure of the bucket wheel excavator is a complex
mechanical system with prominent elastic properties of certain parts. The
excavator boom, because of its steel wire-rope suspension and an unfavorable
position of the working wheel, which is a large concentrated mass in constant
contact with the excavated face, is affected by the complex dynamic loads,
originating from the resistance to excavation and the movement of the total
excavator mass. Designing the gear drive transmission of the bucket wheel
excavator working wheel is a very complex designing task, that requires
the implementation of modern design methods for its completion. High precision
in calculating the structural elements of the working wheel transmission
can be achieved through the simulation of the exploitation conditions.
The paper gives an approach to the calculation of the elements of working
wheel drive transmission based on the standardized spectrums of loads.
Key words: bucket wheel excavator, working wheel transmission
calculations, load spectrum.
PRORAČUN STRUKTURNIH ELEMENATA
PRENOSNIKA RADNOG TOČKA ROTORNOG BAGERA
Noseća konstrukcija rotornog bagera predstavlja složeni mašinski sistem
sa jako izraženim elastičnim svojstvima pojedinih delova. Strela bagera,
zbog vešanja izvedenog čeličnim užadima i nepovoljnog položaja radnog točka,
koji predstavlja veliku koncentrisanu masu u stalnom zahvatu sa otkopnim
masivom, izložena je opterećenjima složenog dinamičkog karaktera, koja
potiču od otpora kopanja i pokretanja celokupne mase bagera. Konstruisanje
zupčastog prenosnika za pogon radnog točka rotornog bagera, kao složenog
mašinskog sistema, predstavlja složen projektno konstrukcijski zadatak
za čije rešavanje je neophodna primena savremenih metoda konstruisanja.
Visok stepen tačnosti pri proračunu strukturnih elemenata prenosnika radnog
točka rotornog bagera može se postići simulacijom eksploatacionih uslova.
U radu je dat pristup proračuna elemenata prenosnika za pogon radnog točka
rotornog bagera zasnovan na normiranim spektrima opterećenja.
Ključne reči: prenosnik radnog točka rotornog bagera, proračun, spektar
opterećenja.
