Research on rope groove parameters of multilayer winding hoist drum

This paper studies the selection rule of rope groove parameters for the multi-layer winding hoisting system of ultra-deep mine. In the process of multi-rope and multi-layer winding lifting,the tension of the wire rope is constantly changing with the lifting height and the deformation of the drum and the tension of the wire rope affects each other. In considering the decrease of rope’s tension in layers,the mechanical model of the mutual influence of drum and wire rope is established to calculate the deformation of wire rope and to study the variation of rope parameters,which pro- vide theoretical reference for the design and selection of the parameters of the rope groove of drum. The results show that the pitch ranges from 1. 032 6 d to 1. 414 d,the best diameter of the groove is 1. 032 6 d and the contact depth is 0. 329 d. By analyzing the effect of pitch on the inter-circle transition acceleration,the transition curve of inter-circle transition is obtained. The results show that the smaller the pitch is,the more favorable the acceleration is. The re- search methods and results can effectively guide the design of the rope groove of ultra-deep mine hoist and the selec- tion of appropriate rope groove parameters.