摘要 本设计为型砂处理机筛分机构的设计，主要研究内容：激振器的机构设计；筛箱的结构设计；筛网的结构设计。 本设计是由激振器，参考圆振动筛的相关参数，初步确定凸轮轴的转速，从而确定线速度、筛箱的大孝筛网的孔径等相关数据。在保证生产率和筛分粒度的前提下完成总体结构的设计，然后根据总体结构，从而确定本设计的筛分机各个主要零部件的设计。 在主要零部件的设计中，主要包括运动参数的选择、振动工艺参数的计算、动力学分析和参数计算、电动机的选择、筛箱的设计、激振器轴承的选用及校核等，其中最重要的就是动力学分析和参数计算。凸轮轴采用铸钢做成，并使用新型材质以提高其的耐磨性和利用率。 本设计整体圆振动筛基础上更进一步提高了其筛分性能，结构简单、重量轻、外形尺寸孝设备费用低、运转安全、操作方便、便于维修和管理。 关键词：振动筛；激振器；筛面；筛分 Abstract The desig
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nd ma
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nt. Keywords: sieve; sievi
ng ; shaker ; vibratio
n; exciter 目录 1绪论1 1.1背景介绍1 1.2筛分机构研究内容3 1.3具体方案与措施4 1.4设计方案综述5 2运动学参数的选择6 2.1筛面的倾角6 2.2振动方向角7 2.3振幅7 2.4振动次数
n 7 2.5物料的运送速度8 3振动筛工艺参数的计算9 3.1生产率的计算9 3.2筛面的长和宽的确定9 3.3筛面设计10 3.4筛面开孔率的计算11 3.5筛分效率11 4动力学分析及参数计算12 4.1振动筛的动力学分析12 4.2单轴振动筛的工作状态14 4.3隔振弹簧的确定16 4.4激振器偏心质量偏心距17 5电动机的选择18 6筛箱的设计21 6.1侧板和横梁21 6.2筛箱结构的焊接21 6.3筛面的固定方法21 7 V型带的设计23 8激振器轴承的选用及校核26 8.1振动筛轴承的选择26 8.2轴承的校核26 8.2.1寿命校核27 8.2.3结论28 9总结29 参考文献30 致谢31