多档货运索道动力计算方法及结构冲击影响研究
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国家电网有限公司总部科技项目(5200-202016148A-0-0-00)


Calculation method for dynamics of multispan freight cableway and influence of structure impact
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    摘要:

    根据多档索道工作索(承载索和牵引索)及运行小车的相互作用关系,基于有限质点法理论建立质点运动方程,构建了适用于多档货运索道整体结构的动力计算方法.在计算方法中,采用索滑移单元的方式模拟工作索与支架、载荷的滑移接触状态,并提出牵引索循环行进计算方法.应用构建的整体计算方法分析了载荷质量、牵引机牵引速度及承载索长度等主要影响因素作用下运行小车通过货运索道支架时的冲击动力响应,给出了承载索、牵引索及支架的张力变化情况,对实际工程中货运索道钢丝绳、支架等结构的动态冲击性能提出技术要求,可为多档货运索道的设计提供更加科学合理的参考依据.

    Abstract:

    According to the interaction between working cables(bearing cable and traction cable)and travelling trolley in multispan cableway,the equations of motion were established based on the theory of finite particle method (FPM),and a calculation method for dynamics of the multispan freight cableway was developed.In this method,the sliding contact state of working cables with supports and loads was simulated by using the sliding cable element,the interaction relationship between traveling trolleys and working cables was obtained by the contact judgment method,and the condition that traction cable travels in circle was also taken into account.Then the calculation method was applied to analyze the impact dynamic responses of a trolley passing through the support of a freight ropeway for different key parameters,such as load mass,velocity and middle deflection coefficient.The tension variations of bearing cable,traction cable and support ware obtained,which indicated that the load mass and traction velocity have significant influences on the impact responses.

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秦剑,乔良,张映辉,郝玉靖,何勇军.多档货运索道动力计算方法及结构冲击影响研究[J].动力学与控制学报,2020,18(2):59~68; Qin Jian, Qiao Liang, Jiang Ming, Wan Jiancheng, Hao Yujing. Calculation method for dynamics of multispan freight cableway and influence of structure impact[J]. Journal of Dynamics and Control,2020,18(2):59-68.

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  • 收稿日期:2019-04-11
  • 最后修改日期:2019-11-18
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  • 在线发布日期: 2020-05-07
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