将平衡钢丝绳质量等效在提升容器上,利用Hamilton方程建立塔式多绳摩擦提升系统变长度提升钢丝绳横向振动动力学模型。用修正Galerkin方法将无限维偏微分振动控制方程离散有限维常微分方程。以某矿副立井提升系统运行状态曲线为运动参数输入,仿真分析不同运行阶段提升钢丝绳横向振动规律及刚度、阻尼对横向振动影响。结果表明,在外界干扰激励作用下提升的上行阶段振动更剧烈;增大弹簧刚度、集中阻尼及分布阻尼均可减小钢丝绳横向振幅。
Abstract
Using the mass of time-varying length balance rope focused on the hoisting conveyance, the transverse model of mine friction hoist was established by the Hamilton’s principle. The modified Galerkin’s method was used to discretize partial differential equations. The mine hoisting system was used to the example to analysis the regular of the transverse vibration of wire rope at different operation stages, and the influence of stiffness and damping on the transverse vibration. The results showed that under the incentive function of the external disturbance, the hoisting cable transverse vibration displacement is more intense in the ascending stage; The vibration of the rope can be suppressed by changing the spring stiffness and damping.
关键词
摩擦提升系统 /
横向振动 /
钢丝绳
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Key words
mine hoist /
transverse vibration /
rope
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参考文献
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脚注
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