Analysis of rope zone of multi-point multi-layer winding lifting system in ultra-deep mine

In the mining of ultra-deep resources, workers need to use ultra-deep mine lifting equipment to lift minerals, in order to ensure the synchronization between ropes during the lifting process. The article analyzes the change in the length difference between the steel ropes from the perspective of rope groove deformation. This work considers the influence of the weight of the vertical rope, analyzes the variation of surface load on the rope groove, establishes the expressions for deformation at the rope groove, and analyzes the influence of rope groove deformation on the difference in the length of the wire ropes. The results show that in the ultra-deep mine multi-layer winding lifting system, the rope groove load varies with the height of the rope. The rope groove deformation curve is similar to the quadratic function curve, and the maximum point is close to the middle position. Based on these results, the article studies the influence of the imbalance between the circles, the winding gap, and the rope-out method on the difference in the length of the wire ropes. It is found that, the extent of the lack of synchronization between the rings has a greater influence on the change in the length of the wire rope, and a wire rope wound under the reel is more conducive to ultra-deep mine lifting.