中文摘要

巨菌草：隶属被子植物门，单子叶植物纲，禾本科，狼尾草属。原产地在北非，由福建省农林大学菌草研究所所长林占熺研究员引进改良培育，在中国大面积获得成功。这是一种适宜在热带、亚热带、温带生长和人工栽培的高产优质菌草。但是目前国内现有的菌草切割装置不多，为了市场需求，本文主要从深入了解巨菌草为依据设计出合理的菌草切割机。主要研究内容和结果如下：
首先，分析了菌草收割机和切割装置的工作原理，对其结构设计方法进行了深入的研究，在对菌草收割机整机和切割装置结构研究的基础上，找出了切割装置设计过程中影响切割性能的主要因素，确定了切割装置合理的设计方案，对切割装置的关键零部件进行了设计。
其次，根据实际工况利用有限元分析软件对切割装置进行了静力学分析，得到了菌草切割机静力的应力变化云图等，分析结果，通过对数据的分析和优化，改善了结构不合理部分。
最后，对设计中存在的问题进行了总结，为切割装置的结构进一步改进提供了理论依据。
 
关 键 词：菌草收割机，切割装置，设计，分析

Abstract

Membership: anthophyta, Jujun grass Monocotyledoneae, Gramineae, pennisetum. Origin in North Africa, Fujian province by JUNCAO Research Institute of Forestry University researcher Lin Zhanxi introduction breeding success, in a large area of China. This is a suitable for tropical, subtropical, temperate growth and artificial cultivation of high yield and quality of grass. But the current domestic existing grass cutting device is not much, for the needs of the market, this article mainly from the in-depth understanding of giant JUNCAO according to the design of a reasonable grass cutting machine. The main research contents and results are as follows:
First, analysis of the harvester cutting device and JUNCAO working principle, the structure design method is studied, based on the structure of the device and JUNCAO harvester cutting, finds out the main factors affecting the cutting performance of the cutting device in the design process, the design of cutting device is reasonable, the key parts of the cutting device is designed.
Secondly, according to the actual condition of cutting device was analyzed using finite element analysis software, the grass cutting machine static stress variation, the results of the analysis, through the analysis and optimization of the data, improve the unreasonable structure.
Finally, the existing problems in design are summarized. The structure of cutting device provides a theoretical basis for further improvement.
Key words: grass harvester, cutting device, design, analysis

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