Performance evaluation of ultra-class mining shovel track roller paths

Abstract

ABSTRACT This paper outlines a scale test approach for roller-roller path contact proportional to the field impact observed in the undercarriage of ultra-class mining shovels. The scale test is a cost-effective means to predict the degree of roller contact fatigue deterioration as a function of the number of field-measurable duty cycles. The proposed test method will potentially permit more cost-effective, small-scale development testing of roller path technology for specific mining conditions for ultra-class shovel designers. The preliminary data reported in this paper indicate that the proposed test configuration can infer performance to end-of-life roller-roller path combinations within the confines of a given set of field loading conditions (coal mine in this case). The results open up a future opportunity to verify the sensitivity of damage models, leading to the advancement of roller-roller path systems with greater operational longevity and reducing maintenance time and cost through avoidance of catastrophic failure.