摘要
针对电驱动海洋绞车钢丝绳缠绕系统,研究钢丝绳在缠绕过程中的动力学特性.运用弹性振动理论建立提升钢丝绳的数学模型,并对柔性钢丝绳建模参数进行了详细计算,利用Solidworks和Adams建立了钢丝绳缠绕系统的虚拟样机模型并对其进行了仿真分析.结果表明,在绞车提升、下放过程中,波浪对钢丝绳张力有一定程度的影响,加速度的变化对钢丝绳动张力影响明显,尤其在加速度突变节点与层间过渡段,会对钢丝绳缠绕系统造成较大冲击,加剧磨损的发生;同时进一步分析验证了同层缠绕时钢丝绳张力的衰减现象与卷筒接触力的变化规律.这些结果为海洋绞车提升系统设计与优化有着重要的参考价值.
Aimed at the wire rope winding system of electric drive marine winch, the dynamic characteristics of wire rope during winding process are studied. The mathematical model of the reinforced wire rope is established by the elastic vibration theory. There is a detailed calculation on the modeling parameters of the flexible wire rope model. Based on Solidworks and Adams,the virtual prototype model of the wire rope winding system is established and simulated. Results show that the wave motion has a certain degree of influence on the tension of the steel wire rope during the lifting and lowering process of the winch the dynamic tension of the steel wire rope is closely relevant to the change of the acceleration,especially acceleration abrupt node and inter-layer transition section. It will cause great impact on the wire rope winding system and aggravate the occurrence of wear. Moreover,the study has a further analysis and verification about the variation of the tension of the wire rope and the contact force of the reel when the same layer is wound. These results are of valuable references for the design and optimization of marine winch lifting system.
引文
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