农田地面不平度测量与分析

发布时间：2018-02-26 04:27

本文关键词： 农田地面不平度功率谱密度惯性基准测量系统　出处：《农机化研究》2017年01期 　论文类型：期刊论文

【摘要】：农田地面高低不平是导致农机行驶时产生振动的原因,想要研究各种农机在不同农田地面行驶时的振动问题,不可避免地要研究不同农田的地面不平度。针对目前国内还未开始系统全面地研究不同农田地面不平度及科研工作者在研究农机振动问题时受限于没有农田地面不平度作为随机激励的现状,设计开发了一套适用于不同类型拖拉机且安装方便的测量系统,并对陕西海升现代农业园区中的3种地面(果园软路面、坚实土路、石子路)的不平度进行了测量与分析,得到3种地面的不平度与功率谱密度曲线。经与标准等级功率谱密度比较,得出软路面和坚实土路的地面等级介于C级和D级之间,石子路的地面等级介于B级和C级之间,表明石子路地面较其他两种地面平整。其结果与所观察到的真实地况相符,从而验证了该套测量系统的可靠性,为以后建立农田地面不平度数据库和研究农机行驶振动奠定了基础。
[Abstract]:The unevenness of farmland ground is the reason that causes the vibration of farm machinery. We want to study the vibration of all kinds of farm machinery when driving on different farmland ground. It is inevitable to study the surface unevenness of different farmland. In view of the fact that there has not been a systematic and comprehensive study on the surface roughness of different farmland in China at present, the researchers are limited by the lack of farmland when they study the vibration problem of agricultural machinery. The present situation of irregularity as random excitation, A measuring system suitable for different types of tractors and easy to install is designed and developed, and the unevenness of three kinds of ground (soft road, solid earth road, stone road) in Shaanxi Haisheng Modern Agricultural Park is measured and analyzed. Compared with the standard grade, the ground grade of soft pavement and solid soil road is between class C and D, and the grade of stone road is between class B and C, the curve of power spectrum density of three kinds of ground is obtained, and the grade of soft pavement and solid soil road is between class C and D, and the grade of stone road is between class B and class C. The results show that the ground of the stone road is flat than that of the other two kinds of ground, and the results are in agreement with the observed ground conditions, which verifies the reliability of the measuring system. It lays a foundation for the establishment of the farmland surface roughness database and the study of the driving vibration of farm machinery.
【作者单位】：农业部南京农业机械化研究所;安徽农业大学;
【基金】：公益性行业(农业)科研专项(201203025)
【分类号】：S220;S29

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