| The steel wire rope of the multi-layer winding super deep mine hoist needs to realize the conversion and interlayer transition by means of the interlayer transition device with reasonable structure at the rope stopper plate on both sides of the drum.The unreasonable interlayer transition device will cause the vibration,wear and rope stuck in the ultra-deep,high-speed,heavy load and other working conditions,but also affect the stability of the steel wire rope rope,and even affect the life of the whole lifting system.Although domestic and foreign scholars have done a lot of research on the multilayer winding interlayer transition device in ultra-deep mine,the current published interlayer transition device is basically 1～2and 2～3 layers.In order to solve these problems,this paper designs an interlayer transition device suitable for high speed,ultra deep and heavy load conditions,which can be wound 5 layers or more,and according to the experimental data of the existing steel wire rope multi-layer winding test bed and the simulation model simulation results compared,analyzed,optimized the simulation model and the structural parameters of the interlayer transition device.The research work and conclusions of this paper mainly include the following aspects:(1)A kind of interlayer transition device for wire rope multilayer winding under high speed,ultra deep and heavy load is designed.Combined with the research background,based on the research and analysis of the motion state and characteristics of the steel wire rope during its transition along the interlayer transition device,the lateral displacement,radial displacement and longitudinal displacement of the steel wire rope in the interlayer transition block,the support block and the interring transition block when the 3～4 layer and 4～5 layer transition device are rotated along the reel are calculated by taking the change of the central Angle θ corresponding to the rotation of the reel as the variable.The proper structural formulas for each part of the interlayer transition device are obtained.(2)The simulation research of multi-layer winding and lifting system of steel wire rope is carried out.Based on the mathematical model of interlayer transition derived in the previous chapter,a three-dimensional model of rope groove and interlayer transition device is established,in which the interlayer transition device includes interlayer transition zone,linear zone and interloop transition zone.Considering the rigid-flexible coupling characteristics of the wire rope,a virtual model of interlayer transition device for lifting the wire rope is established by simulating the wire rope with the method of shaft sleeve force and adding contact force to it with the impact function.The whole model was simulated to analyze the variation law of lifting vessel displacement,velocity variation rate and acceleration amplitude,the variation law of vertical rope dynamic tension and acceleration difference,and the variation law of suspension rope velocity curve during the lifting process of the designed interlayer transition device under the impact load.(3)Study on optimization of key parameters of interlayer transition device of winding mine hoist.The variation trend and amplitude fluctuation of the simulation curve and the experimental curve are analyzed according to the comparison between the experimental data of the existing steel wire rope multi-layer winding test stand and the simulation model.The structural parameters of the simulation model and the interlayer transition device were optimized.By comparing and analyzing the arc length of the central Angle corresponding to the transition area of the interlayer transition block of the interlayer transition device,the optimal arc length of the central Angle corresponding to the transition area of the interlayer transition block of the interlayer transition device was obtained,and the key parameters of the interlayer transition device were optimized... |
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