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.