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原稿 玉米 秸秆 粉碎 还田 设计 开题 报告 讲演 呈文 毕业论文 cad 图纸

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毕业设计说明书中文摘要玉米秸秆粉碎还田机设计摘要 近几年随着玉米产量的大幅度的提高，秸秆、根茬也大量增多，随之出现的问题是清理秸秆、刨根茬，成了农民种地前最头痛的事，为争时争工，不影响秋种的进度，有些农民只好将秸秆就地焚烧。既浪费资源又污染环境。可以把秸秆粉碎后铺撒在地里，既环保又可以改变土壤的理化性。玉米秸秆粉碎还田机就是这样的一种农具，本设计采用均力免震法排列刀，工作时由拖拉机采用后悬挂方式进行耕作。刀具使用Y型刀中间采用齿轮传动和皮带传动相结合的方法。关键词 还田机 玉米 设计毕业设计说明书外文摘要Design of the Corn straw counters-fieldAbstractIn recent years with the corn yield significant enhancement of straw, root, the increasing number of crop also. The resulting problems is clean up straw, follow chi, became farmers sow the land before headaches. As for work, when does not affect to prepare for the progress of the straw stalk, some farmers had to local burned. Do so just a waste of resources and environmental pollution. We can put it to pieces after the stalks strewn in the field, the environmental protection can alter the soil physicochemical. Corn straw chopper drive is one such farm implements. This design uses shock-free laws are arranged in knife edge, the work by the tractor by way of farming after the suspension. Tool use Y knife among USES the gear transmission and the method of combining