The 8th Russian-Chinese Symposium. Coal in the 21st Century: Mining, Processing and Safety Influence of Service Conditions of Quarry Dump Trucks on the Thermal State Large-size Tires Kulpin Aleksandr G.1,a; Stenin Dmitriy V.1,b; Kultayev Evgeniy E.1,c ; Kulpina Evdokya E. 1,d ; Borovtsov Valeriy A.1,e. T. F. Gorbachev Kuzbass State Technical University, Kemerovo, Russian Federation.
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[email protected] [email protected]@yandex.ru Abstract - Operability of tires depends substantially on their - load factor; thermal state. High operational temperature of tires worsens mechanical properties of tire materials and reduces their dura- - average operational speed of the movement, i.e. average bility. The country average level of large-size and over large-size speed of a dump truck for its time spent on the route. When tires service life considerably decreases because of the tires which calculating this speed, all the time of the car spent for getting have failed as a result of thermal destructions. In order to de- the work order and the downtime during loading/unloading crease the operational temperature and, consequently, increase was considered; the service life of tires taking into account their hypersensibility to various service conditions, quality of production and other - longitudinal inclination of the road; factors, complex researches of a thermal state have been made. Dependence of tire temperature on the load factor and speed was - ambient temperature. received. Such studies conducted to date are still insufficient. They have partial, local character and make it impossible to es- tablish the regularities allowing to ensure the required perfor- mance of tires.