Authors: S.V. Goryunov, A.A. Khoreshok

Title of the article: Development of a methodology for assessing the resource of large-sized tires of quarry dump trucks

Year: 2021, Issue: 2, Pages: 3-10

Branch of knowledge: 05.05.06 Mining machines

Index UDK: 622.684

DOI: 10.26730/1816-4528-2021-2-3-10

Abstract: The article substantiates the need to develop a methodology for predicting the resource of large-sized tires of mining dump trucks for various operating conditions and sets the tasks of conducting research. The results of statistical processing on the distribution of failures of large-size tires by types of defects and the possibility of extending the service life by restoring the tire tread are presented. As a result of the conducted research, a functional model for predicting the resource of large-sized tires of quarry dump trucks for mechanical damage with a confidence probability of 90% was developed. Regression dependences of predicting the thermal state of the tire depending on the average operating speed, tire load and ambient temperature are obtained. These dependences allow you to set the permissible average operating speeds of a quarry dump truck based on the thermal condition of the tire. On the basis of the power balance, a mathematical model of the natural wear of the tire tread, depending on operational factors, is constructed. The developed model allows us to assess the degree of influence of various operational factors on the natural wear of large-size tires of quarry dump trucks. The greatest impact on the natural wear of the tire tread will have a rolling resistance coefficient of up to 39% and the speed of movement of the dump truck. The results obtained make it possible to increase the reliability of operation of mining dump trucks and to organize an effective system of accounting and control of large-sized tires at mining enterprises.

Key words: large-size tires mining dump truck service life temperature wear mechanical damage

Receiving date: 16.03.2021

Publication date: 29.04.2021

CITE DOWNLOAD