Effects of hoisting parameters on dynamic contact characteristics between the rope and friction lining in a deep coal mine.pdfVIP

Tribology International 96 (2016) 31–42 Contents lists available at ScienceDirect Tribology International journal homepage: /locate/triboint Effects of hoisting parameters on dynamic contact characteristics between the rope and friction lining in a deep coal mine Dagang Wang a,n, Xiaowu Li a, Xiangru Wang a, Ganyu Shi a, Xianbiao Mao c, Dao’ai Wang b a School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China b State Key Laboratory of Solid Lubrication, Lanzhou Institute Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China c State Key Laboratory of Geomechanics Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China article info Article history: Received 17 October 2015 Received in revised form 7 December 2015 Accepted 17 December 2015 Available online 23 December 2015 Keywords: Hoisting parameters Rope Friction lining Dynamic contact abstract Effects of hoisting parameters (effective load, acceleration and deceleration) on dynamic contact characteristics between the rope and friction lining in a deep coal mine were analyzed in this study. Effects of hoisting parameters on dynamic tensions during hoisting with variable acceleration and deceleration were explored employing Simulink simulations. Roles of hoisting parameters on contact states, slip amplitude and stress distributions along the contact path were investigated using ?nite element analyses. The results show distinct tensions and tension differences at both rope ends with different hoisting parameters. Dynamic contact states consist of sticking, slip and mixed regimes during hoisting. Increases of hoisting parameters induce overall increased possibilities of the gross slip, increased stress concentrations and accelerated wear between contacting bodies. 2015 Elsevier Ltd. All rights reserved. 1. Introduction The multi-rope friction hoist system is widely employed in deep coal mines to lift and lower the coal, gang