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带式输送机的机械传动装置设计说明书题目： 用于带式运输机的机械传动装置的设计学院:机电工程学院 专业：机械设计制造及其自动化 班级： ２０ 10 级本 3 学号： 2 ０ 101 ０0513 ０ 63 7 完成人: 王新波 同组人: 指导老师:
完成日期： ２ 0 １ 3 年 6 月 30 日 目 录一、确定传动方案.............................................................................................................................1二、选择电动机.................................................................................................................................21. 电动机类型的选择.................................................................................................................22。 电动机功率的选择..............................................................................................................33． 电动机转速的选择...........................................................................................................34. 电动机型号的确定.................................................................................................................4三、传动装置的运动学和动力学计算.............................................................................................41。 总传动比及其分配...........................................................................................................42． 传动装置中各轴的转速计算..............................................................................................53。 传动装置中各轴的功率计算..............................................................................................5４. 传动装置中各轴的输入转矩计算.......................................................................................5四、带传动设计.................................................................................................................................6１． 确定带传动的额定功率.................................................................................................6２． 选取带传动的带型............................................................................................................63. 确定带轮基准直径..............................................................................................................7４. 确定V带的基准长度和带传动的中心距.......................................................................75。 验算主动轮上的包角..........................................................................................................86. 计算Ｖ带的根数z..................................................................................................................87。 计算带传动的预紧力.......................................................................................................8８。 计算作用在带轮上的压轴力............................................................................................99。 带轮结构设计...................................................................................................................9五、高速级齿轮传动的设计...........................................................................................................101． 选定高速级齿轮的类型、精度等级、材料及齿数.......................................................102。 按齿根弯曲疲劳强度设计................................................................................................10２.1确定公式内各参数值...............................................................................................102.２ 设计计算...................................................................................................................123。计算齿轮传动的几何尺寸.................................................................................................13４. 校核齿面接触疲劳强度.....................................................................................................14４．1 确定公式内各项参数值........................................................................................144.２ 校核计算...................................................................................................................155。 齿轮结构设计.................................................................................................................16六、低速级齿轮传动的设计...........................................................................................................18七、轴的初步设计计算...................................................................................................................181。 轴材料的选择....................................................................................................................19
２. 轴的最小直径估算..........................................................................................................192．1 高速轴...................................................................................................................19２.2 中间轴.......................................................................................................................192．3 低速轴...................................................................................................................193。 高速轴的设计....................................................................................................................21３。1 各轴段直径的确定................................................................................................213.２ 各轴段长度的确定................................................................................................21４。 中间轴的结构设计..........................................................................................................214.１各段轴径的确定........................................................................................................224。2 各轴段长度的确定...............................................................................................224．3 细部结构设计..........................................................................................................22５。 低速轴的结构设计..........................................................................................................235。1 各轴段直径的确定..................................................................................................235.2 各轴段长度的确定.....................................................................................................23八、轴的校核...................................................................................................................................241。 轴的力学模型的建立........................................................................................................241.１ 力的作用点和支撑点位置的确定.......................................................................241.２ 做轴的受力简图.......................................................................................................242. 计算齿轮对轴的作用力.......................................................................................................253． 计算轴承对轴的支反力.................................................................................................253.1 垂直面内的支反力..................................................................................................25３．2 水平面支反力........................................................................................................263。3 计算支承点的总支反力..........................................................................................26４. 绘制轴的弯矩图和转矩图.................................................................................................26４．１ 垂直面内的弯矩图..............................................................................................27４.２ 水平面内的弯矩图.................................................................................................27４。３ 合成弯矩图..........................................................................................................27４．4 轴的转矩图............................................................................................................284．５ 轴的当量弯矩图....................................................................................................285。 按照弯矩合成强度校核.................................................................................................28九、键的选择与强度校核...............................................................................................................28十、滚动轴承的选择与校核...........................................................................................................29１。 滚动轴承的选择..............................................................................................................292。 滚动轴承的校核................................................................................................................29２.1 径向载荷...................................................................................................................302。2 轴向载荷..................................................................................................................302.3 当量动载荷P..............................................................................................................302.４ 验算轴承寿命.....................................
完成日期： ２ 0 １ 3 年 6 月 30 日 目 录一、确定传动方案.............................................................................................................................1二、选择电动机.................................................................................................................................21. 电动机类型的选择.................................................................................................................22。 电动机功率的选择..............................................................................................................33． 电动机转速的选择...........................................................................................................34. 电动机型号的确定.................................................................................................................4三、传动装置的运动学和动力学计算.............................................................................................41。 总传动比及其分配...........................................................................................................42． 传动装置中各轴的转速计算..............................................................................................53。 传动装置中各轴的功率计算..............................................................................................5４. 传动装置中各轴的输入转矩计算.......................................................................................5四、带传动设计.................................................................................................................................6１． 确定带传动的额定功率.................................................................................................6２． 选取带传动的带型............................................................................................................63. 确定带轮基准直径..............................................................................................................7４. 确定V带的基准长度和带传动的中心距.......................................................................75。 验算主动轮上的包角..........................................................................................................86. 计算Ｖ带的根数z..................................................................................................................87。 计算带传动的预紧力.......................................................................................................8８。 计算作用在带轮上的压轴力............................................................................................99。 带轮结构设计...................................................................................................................9五、高速级齿轮传动的设计...........................................................................................................101． 选定高速级齿轮的类型、精度等级、材料及齿数.......................................................102。 按齿根弯曲疲劳强度设计................................................................................................10２.1确定公式内各参数值...............................................................................................102.２ 设计计算...................................................................................................................123。计算齿轮传动的几何尺寸.................................................................................................13４. 校核齿面接触疲劳强度.....................................................................................................14４．1 确定公式内各项参数值........................................................................................144.２ 校核计算...................................................................................................................155。 齿轮结构设计.................................................................................................................16六、低速级齿轮传动的设计...........................................................................................................18七、轴的初步设计计算...................................................................................................................181。 轴材料的选择....................................................................................................................19
２. 轴的最小直径估算..........................................................................................................192．1 高速轴...................................................................................................................19２.2 中间轴.......................................................................................................................192．3 低速轴...................................................................................................................193。 高速轴的设计....................................................................................................................21３。1 各轴段直径的确定................................................................................................213.２ 各轴段长度的确定................................................................................................21４。 中间轴的结构设计..........................................................................................................214.１各段轴径的确定........................................................................................................224。2 各轴段长度的确定...............................................................................................224．3 细部结构设计..........................................................................................................22５。 低速轴的结构设计..........................................................................................................235。1 各轴段直径的确定..................................................................................................235.2 各轴段长度的确定.....................................................................................................23八、轴的校核...................................................................................................................................241。 轴的力学模型的建立........................................................................................................241.１ 力的作用点和支撑点位置的确定.......................................................................241.２ 做轴的受力简图.......................................................................................................242. 计算齿轮对轴的作用力.......................................................................................................253． 计算轴承对轴的支反力.................................................................................................253.1 垂直面内的支反力..................................................................................................25３．2 水平面支反力........................................................................................................263。3 计算支承点的总支反力..........................................................................................26４. 绘制轴的弯矩图和转矩图.................................................................................................26４．１ 垂直面内的弯矩图..............................................................................................27４.２ 水平面内的弯矩图.................................................................................................27４。３ 合成弯矩图..........................................................................................................27４．4 轴的转矩图............................................................................................................284．５ 轴的当量弯矩图....................................................................................................285。 按照弯矩合成强度校核.................................................................................................28九、键的选择与强度校核...............................................................................................................28十、滚动轴承的选择与校核...........................................................................................................29１。 滚动轴承的选择..............................................................................................................292。 滚动轴承的校核................................................................................................................29２.1 径向载荷...................................................................................................................302。2 轴向载荷..................................................................................................................302.3 当量动载荷P..............................................................................................................302.４ 验算轴承寿命.....................................
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