粉碎机 毕业论文.doc

前置式秸秆粉碎机设计 机械设计制造及其自动化07-3 天涯 指导教师：石荣 摘要 摘要：目前，农作物秸秆及牧草类等粗纤维青物料粉碎加工多采用普通粉碎机，效率低，能耗高，不能达到粉碎要求，市场上也没有专业的加工机械产品面世，因此研制秸秆和牧草等青物料加工机械存在着客观的必要性。为此，主要介绍了秸秆类青物料粉碎机的设计思想、设计方案、主要零部件的设计要点、性能参数的确定以及本机的工作原理。 本机的机架、上盖都采用了铸件，降低了整机的重心；发动机和主轴之间通过皮带传动，缓和了载荷冲击；主轴通过两个圆锥滚子轴承与机架连接；刀盘和主轴之间采用平键联接；飞刀用垫块和螺栓固定。 关键词:粉碎机，削片机，粗纤维；茎秆 The Design of Straw Crusher Mechanical Design, Manufacturing and Automation 07-3 FangPeng Supervisor：Shi Huairong Abstract：It used to comminute the green crude fiber crops such as straw and forage with common pulverizer at present．It’S inefficiency and high energy consumption could not meet the requirements of comminution．There is no professionalmachining products is available．So there is objective necessity to study the machining machinery for the green crude fibercrops，such as straw and forage．This paper mainly introduces the design ideas，design schemes，and the determinationof performance parameters as well as the working principle of the machining machinery for the green crude fiber crops ofstraw category． The machines rack, about the top head has used the casting to reduce the machines center of gravity, Strengthened the stability of complete machine effectively; Between the engine and the main axle adopts the belt transmission to relax the load impact, reduced the harm of overload which brings for the major component such as fly cutter；The connection of main axle and rack is two circular cone roller, to prevent the main axle have great beating; The connection of cutter head and main axle is flat key, Coordinates closely；The fly cutter uses the bolt and cushion to be fixed, Reliable and stable, The fly cutter stretches out the quantity to be able to adjust，And advantageous for disassembling and the replacement. Key words：Straw Crusher，chopper，Crude fiber，Stem 目录 1 绪论 4 1.1课题研究背景，目的及其意义 4 1.2 粉碎机的分类特点及其工作原理 5 1.3 国内外粉碎机的发展现状和趋势 7 1.4 选题的设计思想，设计方法及改进 7 1.5 预期结果 8 2 秸秆粉碎机的总体设计 8 2.1粉碎机设计任务 8 2.2 普通粉碎机的结构 8 2.3粉碎机的削片原理 10 2.4本章小结 12 3 主要技术参数的确定和计算 13 3.1 生产能力的确