本科机械毕业设计论文 CAD 图纸 QQ 401339828 1 摘要 21 世纪以来我国大力扶持农业发展,农业机械化的实现已初见成效,不仅增加了我国的国际竞争力,而且给国家带来可观的经济收入,还能够提高我国的国民经济生产总值。通过这次对秸秆粉碎机整体设计及其各部件的分布设计的论述与诠释,来实现小农机具在国内的推广和广泛的应用。关键词:农业机械化;秸秆粉碎;设计本科机械毕业设计论文 CAD 图纸 QQ 401339828 2 Abstract Since twenty-first Century our country to support agricultural developmentvigorously, implementation has achieved initial ess of agricultural machinery,not only to increase the petitiveness ofour country, but alsobring considerable economic e, but also can improve our gross national production. Through the discussion and interpretation of the straw pulverizerdistribution design the overall design and ponents, to achieve the farming machine in the domestic promotion and application. Keywords: agricultural mechanization ; straw crushing; design 本科机械毕业设计论文 CAD 图纸 QQ 401339828 3 目录 1设计任务书........................................................ 研究内容和思路................................................ 研究内容.................................................. 思路...................................................... 主要设计指标.................................................. 2粉碎装置方案的确定................................................ 粉碎机的工作原理.............................................. 粉碎室的形状和宽度............................................ 粉碎室形状的选择.......................................... 配套功率的计算及电动机的选择.................................. 锤片速度及转子转速的确定...................................... 理论生产率.................................................... 粉碎室宽度的选择.............................................. 其他装置的确定................................................ 3标准件的选择...................................................... 电机的选择.................................................... 轴承的选择.................................................... 键的选择...................................................... 螺栓的选择.................................................... 螺母的选择.........................................
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