大学毕业论文—残膜回收机设计.doc

摘 要 地膜覆盖种植技术可大幅度提高作物单产水平，因而得以大面积推广使用，但用过的地膜不能及时回收，滞留在田间。对土壤及生态环境都造成了污染。从残膜不能及时回收的原因分析入手，结合各地条件阐述了不同类型的残膜回收机的特性和使用状况，并提出了解决这一问题的措施和建议。 发展地表残膜回收机械是治理残膜污染的有效方法，残膜的再生利用是保护环境，变废为宝，防治残膜污染的关键所在。 通过理论分析和田间试验，设计研制了一种使用于秋收前在最后一水后进行的地表残膜回收机。介绍这一机器的工作原理和有关设计参数。试验表明该机结构简单，工作可靠，动力消耗少，适应性广。通过分析残膜回收机的破膜器，捡拾机构，输送装置，传动装置，集膜装置等主要工作部件，对残膜回收机械总体的设计方案、主要参数选择、工艺流程等进行了详细的分析。 实践证明，该机还具有结构简单、工作可靠、通用性好等特点， 关键词：白色污染；残膜回收；农用地膜；捡拾机构 Abstract Plastic film laying on crop is widely used in china，but most of the used films are left in the fields after harvesting，and pollution is made both to the soil and environment.the reasons that the used films can not be collected in time are analyzed.countering the local condition of different area，the different types of collectors are described .measurements and suggestions are given to solve the problem. Plastic film plant technology can be robbed and improve the output of crops，but after the crop is reaped，remain into field mould membrane be removed，retrieve in time，so as not to pollute the soil and waste plastics resources .proceed from the angle of pitting is analyzed that the incomplete membrane is polluted and endangered，produces and uses from the plastic film，incomplete membrane retrieve and utilize respect explain manage measure and suggestion that film pollutes again. Develop incomplete membrane retrieve machinery to incomplete membrane effective method of pollution，incomplete regeneration of membrane to protect the environment， turn wealth，prevent and cure incomplete membrane key of pollution. A plastic film collector was invented with analysis of motional tracks and experiments.The working principle and designing parameters of collector were introduced.Experiments indicated that this machine has some advantages such as high working reliability，low energy consumption，and simple structure.Through analyses incomplete membrane person who retrieve get up membrane deviceperson who supports membrane，unload membrane brush，t