致 谢
在毕业设计过程中，我注意收集资料，注重实际考察，强调应用性，从而为完成毕业设计做了良好的铺垫。对毕业设计中的难题，我及时查阅资料，虚心向老师，同学请教，搞好搞懂每个知识点。 综合运用已学课程的有关理论和知识进行工程设计，培养了设计能力，培养了理论联系实际的能力，培养了独立工作的能力，培养了使用资料进行计算，绘制和数据处理的能力，为今后进行设计工作奠定了基础。
在这次毕业设计期间，我得到了辛宗生老师的悉心指导和同组同学的热心帮助，在此期间辛老师经常主动和我交流，及时给我指出不合理之处及需要改进的地方，为我能顺利完成毕业设计做了很多事情，本人在此对辛老师表示深深的谢意。
知识的巩固固然重要，但能力的培养同样不可忽视，我觉得这次设计的完成，不仅了我编设计的工作能力，培养了我独立思考的能力，解决困难的方法，并且也培养了我独立，创新，力求先进的思想。同时我认识到：无论做什么事，只要你深入的去做，难事不难，但如果你不去用心的做，易事不易。机不可失，我在这次的设计中倾注了大量的心血，尽一切力量争取将设计做到最好。我认为我在这段时间内所有的收获，对我今后的学习和工作会是一笔难得的财富。
由于本人理论知识有限，实践经验不足，在设计过程中难免存在很多的错误和不足，恳请老师批评指正。
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目 录
摘 要 ······································································································ I ABSTRACT ····························································································· II 第1章 绪 论·························································································· 1
1.1 课题背景、目的以及意义 ····································································· 1 1.2物料升降平台简介 ·············································································· 1 1.3 国内外研究状况和相关领域中已有的研究成果 ········································· 2
第2章 课题介绍以及设计理论 ································································· 4
2.1 传动方案的拟定原则 ··········································································· 4 2.2 牵引方式、装卸料方式及选用 ······························································ 4
2.2.1 物料升降平台分类 ······································································ 4 2.2.2 物料升降平台的装载和卸载 ·························································· 5 2.3 常用物料升降平台选用及相关计算 ························································ 7 2.4 物料升降平台的主要部件 ····································································· 9 2.5 物料升降平台的工作原理 ····································································· 9 2.6 物料升降平台设计方案总览································································ 10 2.7 本章小结 ························································································ 11
第3章 物料升降平台主要参数确定及主要结构设计 ································ 12
3.1 电动机功率的确定 ············································································ 12 3.2 电动机的选择 ·················································································· 12 3.3 最大张力的计算 ··············································································· 13 3.4 计算传动比 ····················································································· 13 3.5 带轮设计 ························································································ 14
3.5.1 定V带的型号和带轮直径 ·························································· 14 3.5.2 计算带长 ················································································ 14 3.5.3 求中心距和包角 ······································································· 14 3.5.4 求带根数 ················································································ 15 3.5.5 求轴上载荷 ············································································· 15 3.5.6 带轮结构 ················································································ 15 3.6 传送畚斗带系统的设计 ······································································ 17
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3.6.1 输送带的简介 ·········································································· 17 3.6.2 输送带的分类 ·········································································· 17 3.6.3 输送带的连接 ·········································································· 18 3.6.4 输送带层数的计算 ···································································· 18 3.7 计算传动装置的运动和动力参数 ························································· 19
3.7.1 各轴转速 ················································································ 19 3.7.2 各轴功率 ················································································ 19 3.7.3 各轴转矩 ················································································ 19 3.8 本章小结 ························································································ 19
第4章 轴的设计计算及校核 ································································· 20
4.1 驱动轴设计 ····················································································· 20
4.1.1 轴的材料及热处理 ···································································· 20 4.1.2 轴的基本尺寸设计 ···································································· 20 4.1.3 轴的强度校核计算 ···································································· 21 4.1.4 轴承选择以及校核 ···································································· 23 4.1.5 驱动链轮键的设计校核 ······························································ 24 4.1.6 驱动带轮键的设计校核 ······························································ 24 4.2 从动轴设计 ····················································································· 24
4.2.1 从动轴结构 ············································································· 24 4.2.2 轴的强度校核计算 ···································································· 25 4.3 本章小结 ························································································ 26
第5章 其他参数的设计 ········································································ 27
5.1 物料升降平台主要参数的计算 ···························································· 27 5.2 头部罩壳的选材及连接 ······································································ 28 5.3 筒体的设计 ····················································································· 28 5.4 物料升降平台的工作过程 ··································································· 28 5.5 物料升降平台的选用 ········································································· 29 5.6 使用注意事项 ·················································································· 30 5.7 物料升降平台的安装维护及常见故障排除 ············································· 30
5.7.1安装 ······················································································· 30 5.7.2 操作与维护 ············································································· 31 5.7.3 常见故障排除 ·········································································· 31
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5.8 本章小结 ························································································ 33
结 论 ···································································································· 34 参 考 文 献 ··························································································· 35 致 谢 ···································································································· 36
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