Suggestions are made on improving the design of the top frame with double inlets for different stocks so as to render square plansifter perfecter.

对不同物料双进口的筛顶格提出了改进意见，使高方筛结构更趋完善。

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The rigid-flexible coupling dynamics' modeling and modal analysis were employed to study the system consisted of square plansifter and flexible suspender.

针对高方平筛和其上固结的柔性吊杆组成的动力学系统，进行了刚柔耦合的动力学建模和振动模态分析。

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Aiming at the fracture problem of the square plansifter with 8 cells, the calculation for nature frequency and dynamic response of this structure is completed.

针对8仓高方平筛的断裂问题进行了固有频率和动力响应计算，在对计算结果分析的基础上，提出了两种结构改进方案，并对改进结构又进行了计算验证。

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