Authors: A.V. Kudrevatykh, A.S. Ashcheulov, A.S. Ashcheulova

Title of the article: The wear phenomena comparative characteristics of excavators and dump trucks gearboxes

Year: 2020, Issue: 5, Pages: 51-56

Branch of knowledge: 05.05.06 Mining machines

Index UDK: 622.271.4: 622.684

DOI: 10.26730/1816-4528-2020-5-51-56

Abstract: The aim of any enterprise dealing with extraction of minerals is to extract the maximum possible profit; the mining complex is not an exception. Increasing profits with constant resources can be achieved by reducing equipment maintenance costs, as well as reducing costs associated with downtime of mining equipment caused by unplanned maintenance. About 15% of dump trucks downtime is due to gearbox breakdown of the motor-wheel; thus, if the failure of this unit is predicted in time, the reliability and durability of the working equipment can be increased. The most frequent breakdowns of mining equipment are failure of a motor-wheel gearbox. Friction is the main physical phenomenon that affects the condition of a motor-wheel gearbox. The consequences of friction are small metal particles that accumulate in oil. The introduction of the physical and chemical analysis of the used oil has revealed the similarity of mathematical models for the determination of metallic impurities in the used oil. Based on the conclusions, a mathematical model, which allows describing the actual technical condition of gearboxes for various equipment, with an error within 4.7%, was constructed. The input parameters of this model are environmental indicators, as well as the operating parameters of the equipment.

Key words: gearbox wear reliability durability oil mining dump truck excavator

Receiving date: 12.10.2020

Publication date: 23.12.2020

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