Dynamic Analysis And Optimization Of Marine Winch Wire Rope Winding System

The operating environment of the marine winch is rather harsh.Under high-grade ocean conditions,the rope winding system of the marine winch will be greatly affected,which causes serious damage to the wire rope and its rope-carrying device,affects the stability of the wire rope winding process,and even leads to the occurrence of work safety accidents.Having the further detailed study on the dynamic response characteristics,winding behavior and interaction mechanism of winding system of the wire rope in marine winch,those are of great significance for reducing the wear of the rope passing device,improving the control accuracy of system and ensuring the safety of marine operation.In order to analyze the function of wire rope winding system of marine winch more accurately,this paper aimed to do explore into wire rope winding system based on the elastic characteristics of wire rope,the main research contents are as follows:1.Based on the elastic mechanic analysis of the wire rope,the numerical model of the tension and deformation of the wire rope in the lifting process was established,and the variation of the wire rope under different working parameters was simulated by using Matlab/Simulink.2.The virtual prototype technology and the bushing force modeling method were used to establish the simulation model of the flexible steel wire rope.The rigid-flexible coupling model of wire rope winding system including hull,winch,wire rope and load were established by the combination of Solidworks and Adams,and based on the actual working environment parameters of marine winch,the dynamic response of the winch under different working parameters was simulated and analyzed.3.Taked the winding process of wire rope as the research object,the dynamic characteristics and winding behavior of wire rope in the process of winding were analyzed and studied,and the attenuation of tension and the change law of contact force during multi-layer winding of wire rope were obtained by virtual prototype simulation,and the influence of the transition behavior between layers and the rings of wire rope on the system can be found.4.The lifting,lowering,heave compensation and emergency braking experiments of the winch were carried out by using the experimental platform of the marine winch and the established experimental virtual prototype.Through the analysis and comparison of the changes of the lifting force of the motor in the experimental and simulation data,the accuracy of the virtual prototype model was verified.5.The wear phenomenon of the rope passing device in the winch load experiment was studied and analyzed.Aimed at reducing the tension fluctuation of the wire rope and the wear of the rope passing device,the differential evolution algorithm was used to optimize the design parameters of the marine winch.The results show that the optimized working parameters can effectively reduce the tension fluctuation of the wire rope and the contact force between the rope passing devices,which can provide an important reference for the subsequent improvement of the winch.