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为解决当前大型等厚振动筛的高度过大和可靠性等问题,提出了一种新型四轴强制同步变直线轨迹等厚振动筛。并利用有限元分析法对四轴强制同步变直线轨迹等厚振动筛以及等效作用下双轴直线等厚振动筛进行了动态特性分析,分析结果表明:在相同工作频率下,四轴变轨迹等厚振动筛相对于等效作用下双轴直线等厚振动筛筛体最大变形量下降11.3%,两侧板对应点最大振幅差下降44%,最大动应力下降24.5%,动应力分布更合理。这表明四轴变轨迹等厚振动筛的设计是合理的,可以更好地满足大型振动筛对结构刚度和强度的需求。
In order to solve the problems of overlargeness and reliability of large-size equal-thickness vibrating screens, a new type of four-axis forced synchronous variable-linear path equal-thickness vibrating screen was proposed. The finite element analysis was used to analyze the dynamic characteristics of a four-axis forced synchronous variable-linear path equal-thickness shale shaker and an equivalent double-axis linear shale shaker. The results show that under the same operating frequency, Equal thickness shale shaker relative to the equivalent effect of biaxial straight shale shaker sieve body maximum deformation decreased by 11.3%, the maximum difference between the two sides of the board corresponding to the 44% drop in amplitude, the maximum dynamic stress decreased by 24.5%, dynamic stress distribution more reasonable . This shows that the design of four-axis variable-thickness vibrating screen is reasonable and can better meet the requirements of large-scale vibrating screen for structural rigidity and strength.