Numerical Analysis of Friction Lining's Temperature Field during Helically Sliding Contact with Wire Rope

Aiming at the serious accident of mining friction hoist, the friction lining's transient temperature field during sliding friction with wire rope was investigated. Take into account the helical structure of wire rope, the non-complete helical contact characteristics were analyzed. In order to calculate the lining's temperature field accurately, the dynamic thermophysicial properties (DTP) of friction lining were analyzed and the periodical heat-flow and dynamic distribution coefficient of heat flow were obtained. Furthermore, the theoretical model of lining's transient temperature field, resulting from non-complete helical contact with wire rope, was established based on the heat conduction theory and DTP. The finite difference method was applied to solve the nonlinear heat-conduction equation, and the lining's helical temperature field was obtained by numerical simulation. The numerical analysis results supply the theoretical basis with the anti-slip design of mining friction hoist.