Research On The Key Problems Of Multilayer Winding Of Wire Rope In The Hoisting System Of The Ultra-deep Mine

With the increasing demand of global economy for mineral resource and shortage of global resources, it has become a vital development strategy for every country to explore mineral resources in a deeper level and a wider scope. As the hoisting equipments and designing methods available are not enough for deep well hoisting in our country, it is in urgent need to study deep well lifting equipment. This subject is originated from “Deformation detuning law and parallel drive synchronization control study in ultra-deep mine hoisting system” which is the sub-project of national 973 project(project number: 2014CB049403)”. The purpose of the subject is to study the hoisting cable deformation characteristics and its influence on the motion stability of the system, to reveal the shape and arrangement of the rope grooves, curved shape of interlayer transition and cross-over transition to multi-point hoisting system deformation mode of action and to prove generating mechanism and control methods of deformation detuning of multi-point drive flexible hoisting system. Based on the contact science, analytical mechanics, vibration dynamics and the variation calculus, colligating the use of Pro/e、Matlab、ADAMS softwares, aiming at several essential factors in this thesis including the selection for hoisting ways, the determination for winding ways, the optimization for structure parameters of Rope groove, the shape and arrangement ways for multi-layer transitional installation and the dynamic simulation for lifting system, this thesis studies the factors above in detail. As a result, the main content and conclusions of this thesis are as follows:①According to the requirements for the super deep mine lifting, this thesis puts forward that multi- winding lifting is effective and practical for the super deep mine lifting, what’s more it put forward that parallel fold line rope slot is an effective way for multi-rope winding lifting.②Aming at the rope slot structure of parallel fold line rope slot, this thesis optimizes the fold line area length of rope slot. From wire rope coupling vibration perspective, applying the Hamilton principle and the variation principle, this thesis establishes the transverse and vertical coupling model for the wire rope of the lifting system based on the time variable rectangular coordinates. With the help of numerical analysis methods and Matlab software, this thesis solves vibration equations with the dispersed methods and gets the first four order natural frequency curve change graphs of the lifting system, putting forward the reasonable design scope of the rope slot interlayer transition block from the perspective of avoiding the wire rope resonace.③ Based on the contact mechanics and the mathematics geometric, this thesis studies the wire rope multi-layer winding interlayer transition installation under parallel fold line rope slot, derives and establishes the perfect arrangement forms and its crosssection shape equation of the wire rope three layer winding inter-layer transition installation.④ With the help of determined winding ways and multi-layer transitional installments, combining Pro/e and ADAMS, this thesis establishes the virtual prototyping model. Then, by applying ADAMS, this thesis carries out the dynamic simulation for wire rope multi-winding, and gets kinematics and dynamics responses of lifting system. Simulation results shows that the winding ways and the inter-layer transition installation are both applicable to ultra deep mine hoisting.