箕斗装载后残余振动的延迟时间研究

Study on Delay Time of Residual Vibration After Skip Loading

以单绳缠绕式提升系统的箕斗装载为研究对象,通过建立箕斗加速上升的纵向振动控制方程,研究装载后的残余振动对加速提升时钢丝绳张力的影响,据此推导出装载结束后,加速度为阶跃函数提升时残余振动对提升钢丝绳张力影响最小的延迟时间计算公式;针对不同的装载质量,利用SIMULINK对建立的数学模型进行仿真分析,结果表明:装载残余振动为小阻尼衰减振动,且装载质量越大,装载结束和滚筒开始加速提升之间所需的延迟时间越大。

Taking the skip loading of single-rope winding hoisting system as a research object,the influence of residual vibration after skip loading on rope tension during acceleration was studied by building the longitudinal vibration controlling equation of skip acceleration.On this basis,the calculation formula of delay time after loading was derived,when the residual vibration had the minimum effect on the hoisting rope tension during the acceleration improving as a step function.With different loading qualities,the mathematical model was simulated and analyzed by SIMULINK.The results showed that loading residual vibration was small damping vibration attenuation.Meanwhile,the required delay time between the end of loading and the beginning of drum acceleration increased with the rise of loading quality.