Research On The Properties And Contact Behavior Of Steel Wire Rope In The Hoisting System Of The Ultra-deep Mine

With the rapid development of economy and society, the global demand for mineral resources is increasing, mineral exploitation of deeper underground becomes particularly important. But the super deep well(Well depth greater than 1500m) hoisting equipment has not yet been research in China presently. This situation has seriously restricted the implementation of resource development strategy in China. This paper base on the subject of the state 973 project "the study of the deformation and the law of the deformation and the synchronization control of the ultra-deep mine hoisting system".In this paper,using differential geometry, contact mechanics and other disciplines, as well as software such as MATLAB?ANSYS and Pro/E software to research the drum rope groove of mine hoisting system?wire rope modeling and contact behavior etc.The main research contents of this paper include the following aspects:(1)The classification of wire rope was briefly introduced.Taking 6×7+IWS steel wire rope as an example and using the differential geometry principle and coordinate transformation theory to derive the equation of the center line of wire in the wire rope in the state of straight line and bending.The curvature and torsion of the interactive twist and the same direction twist wire rope were calculated and compared respectively. Exploring the influence of wire rope bending on the curvature and torsion of steel wire.(2)Through the analysis and comparison of the advantages and disadvantages of several drum rope slot. The results show that the bilinear transition rope groove is more suitable for the super deep mine hoisting system, the contact condition of multi-layer winding wire rope on the bilinear transition rope groove was analyzed, and it is found that the wire rope in the transition zone of the last lap of every layer is the dangerous contact area.(3)The transition acceleration of the multi-layer winding steel wire rope was analyzed and calculated. Establishing the relation between the tensile load of wire?dislocation between wires?wire contact load with the load of the wire rope. According to the theory of dynamic tension differential equation of wire rope and steel wire tension formula, establishing the Simulink model of the numerical simulation, using this model to analysis the dynamic tension of wire rope during the lifting stage and the change trend of steel wire tension and the change of the wire displacement caused by the dynamic tension and the change of the contact load between the wires.(4)The finite element simulation of steel wire rope was carried out by using ANSYS.Obtaining the distribution of stress and axial deformation under tensile condition.The differences of stress and deformation between different steel wires were analyzed. The contact stress between steel wires was analyzed, and the results are compared. Calculating the transverse and radial displacement of the wire rope in the transition zone and simulating the winding process of inter steel wire. The results show that the steel wire rope in the transition zone force is imbalance.Extrusion characteristics of the rope in the transition zone and the stress and deformation trend in normal were studied.The results show that the performance of interactive lay wire rope is better than that in the same direction lay wire rope in the extrusion conditions.