Prediction of the Safety Factor of Mine Hoisting Rope Based on Fretting Wear

doi:10.3901/JME.2019.07.110

Abstract

Abstract: The evolution of dynamic safety factor of hoisting rope used in a shallow coal mine with the small terminal load is predicted in this study. Dynamic tensions of rope segments at different distances from the container are obtained employing kinetic theory and friction transmission theory. Correlation model between the total wear coefficients and contact load, relative slip and the crossing angle is established. Therefore, dynamic wear evolution and the safety factor of hoisting rope are calculated. Meanwhile, effects of parameters of working conditions on dynamic wear evolution and the dynamic safety factor of hoisting rope are explored. The results show that increases of hoisting cycles induce increased worn area of the cross-sections, and decreased safety factor of hoisting rope at distinct distances from the container. The dynamic safety factor of hoisting rope decreases rapidly in the middle location of vertical rope. The dynamic safety factor of hoisting rope correlates with hoisting parameters. An increase of terminal mass at the lifting side and a decrease of maximum hoisting speed are both induce decreased dynamic safety factor of hoisting rope.

Key words: dynamic wear, fretting wear, mine hoisting rope, safety factor

CLC Number:

TH117

ZHANG Jun, GE Shirong, WANG Dagang, ZHANG Dekun. Prediction of the Safety Factor of Mine Hoisting Rope Based on Fretting Wear[J]. Journal of Mechanical Engineering, 2019, 55(7): 110-118.

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