Authors: A.G. Kulpin

Title of the article: Study of failures of off-the-road tires used on quarry dump trucks

Year: 2018, Issue: 5, Pages: 29-34

Branch of knowledge: ROAD, CONSTRUCTION AND LIFTING AND TRANSPORT VEHICLES

Index UDK: 622.684

DOI: 10.26730/1816-4528-2018-5-29-34

Abstract: The causes of premature tire decommissioning are manufacturing defects, tread pattern wear, mechanical damage, fatigue and thermal damage. Factors, affecting the mobility of tires are divided into manageable and taken into account. The study of thermal destruction of tires revealed a critical temperature of 110 ° C, which leads to the destruction and reduction of tire reliability. The service life of OTR tires depends on many factors of operating condi-tions, such as the location of the wheels on the dump truck (driving and non-driving), the condition of the roadway (excellent, medium, bad), the roadbed soil (sand, clay, earth, gravel, ore, limestone), turns (smooth or straight road), the load on the tires (normative or overload), longitudinal slope, the speed of movement with the load, the air pressure in the tire, the ambient air temperature, driving style and care of the tires which lead to premature disposal because of the excess of the thermal state and, as a consequence, delamination of the tread. Control of the thermal state of large tires in the process of operation allows you to achieve maximum performance based on rational load of dump. The computer program "Optimal utilization" was developed to determine the performance in various operating conditions.

Key words: mining dump truck OTR tires service life of tires thermal condition speed of motion

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