颚式破碎机的设计【PE250X1200型】(CAD图纸+说明书)
已知:最大破碎力为4270.5kN,AC=1996mm,AB=732.4mm 本次设计的题目是颚式破碎机的设计,本文运用大学所学的知识,提出了颚式破碎机的结构组成、工作原理以及主要零部件的设计中所必须的理论计算和相关强度校验,构建了颚式破碎机总的指导思想,从而得出了该颚式破碎机的优点是高效,经济,并且安全系数高,对提高矿石的破碎效率,减少人工投入等等起到了很大的作用的结论。 关键词:颚式破碎机;中心距;弯曲疲劳强度;弯曲许用应力 目录 1绪论.....................................................................1 1.1颚式破碎机简介.....................................................1 1.2破碎机的发展.....................................................2 1.3总体方桉设计.....................................................3 2颚式破碎机机构参数设计.............................................5 2.1啮角α .............................................................6 2.2动颚摆动行程s和偏心距r .............................................7 2.3传动角.............................................................7 2.4肘板摆动角.............................................................8 2.5连杆长度.............................................................9 2.6肘板设计.............................................................10 2.6.1肘板支撑方式选择.............................................12 2.6.2肘板长度计算.....................................................13 2.7主轴转速.............................................................15 2.8生产能力.............................................................16 3主要零部件计算与选择.....................................................17 3.1电动机功率计算和选择.............................................18 3.2带传动设计..............................................................18 3.2.1带型选取.....................................................19 3.2.2传动比.............................................................19 3.2.3大小带轮基准直径.............................................20 3.2.4带速.............................................................21 3.2.5轴间距.............................................................21 3.2.6所需基准长度.....................................................22 3.2.7实际轴间距.....................................................22 3.2.8小带轮包角.....................................................22 3.2.9单根V带传递的额定功率.............................................23 3.2.10额定功率增量.....................................................23 3.2.11V带根数.............................................................24 3.3偏心轴机构设计及尺寸设计.............................................25 3.3.1偏心轴尺寸确定.....................................................25 3.3.2作用在动颚上各点力的计算.....................................26 3.4轴承的选取和校核.....................................................27 4主要零部件的强度校核.....................................................28 4.1轴承的选取和校核.....................................................29 总结.....................................................................31 致谢.....................................................................32 参考文献.............................................................33
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