刘正道,王庆杰,刘春鸽,李洪文,何进,刘俊孝.腔盘式精量穴施肥装置设计与试验[J].农业机械学报,2018,49(10):137-144,355.
LIU Zhengdao,WANG Qingjie,LIU Chunge,LI Hongwen,HE Jin,LIU Junxiao.Design and Experiment of Precision Hole-fertilizing Apparatus with Notched Plate[J].Transactions of the Chinese Society for Agricultural Machinery,2018,49(10):137-144,355.
摘要点击次数: 211
全文下载次数: 115
腔盘式精量穴施肥装置设计与试验   [下载全文]
Design and Experiment of Precision Hole-fertilizing Apparatus with Notched Plate   [Download Pdf][in English]
投稿时间:2018-04-03  
DOI:10.6041/j.issn.1000-1298.2018.10.015
中文关键词:  穴式施肥  腔盘式  离散元仿真  结构优化  取肥稳定性
基金项目:国家重点研发计划项目(2016YFD0200600)和教育部创新团队发展计划项目(IRT13039)
作者单位
刘正道 中国农业大学 
王庆杰 中国农业大学 
刘春鸽 中国农业机械化科学研究院 
李洪文 中国农业大学 
何进 中国农业大学 
刘俊孝 中国农业大学 
中文摘要:施肥方式粗放是造成我国肥料利用率低的主要原因之一。与条状施肥相比,穴式施肥可有效提高肥料利用率。本文设计一种用于颗粒状肥料穴式施用的腔盘式精量穴施肥装置,通过理论分析确定了装置的主要结构和工作参数,并探讨了肥腔形状(圆弧型、直线型-钝角、直线型-锐角和抛物线型)对肥料运动的影响。运用离散元法(EDEM)对不同结构和作业参数下的排肥盘充肥性能和肥群运动进行了仿真分析,结果表明:肥腔形状、前进速度和施肥量对各穴排肥量变异系数均有显著影响,随前进速度的增大和施肥量的减少,变异系数增大,且圆弧型肥腔排肥稳定性最好;前进速度和肥腔形状对肥料扰动度有显著影响,排肥盘经过箱体的时间及其对肥料扰动的形式和扰动量是影响排肥量稳定性的主要原因。在前进速度7km/h、排肥量300kg/hm2的条件下,对4种排肥盘进行台架试验,结果表明,圆弧型肥腔性能最优,排肥量合格率为94%,各穴排肥量变异系数为6.5%,与仿真结果呈现相同规律,且满足作业排肥要求。
LIU Zhengdao  WANG Qingjie  LIU Chunge  LI Hongwen  HE Jin  LIU Junxiao
China Agricultural University,China Agricultural University,Chinese Academy of Agricultural Mechanization Sciences,China Agricultural University,China Agricultural University and China Agricultural University
Key Words:hole-fertilization  notched plate  discrete element simulation  structural optimization  fertilizing stability
Abstract:Extensive fertilization method is one of the main reasons for the low utilization rate of fertilizer in China. Compared with the strip-type fertilization, the hole-type fertilization method can effectively improve the efficiency of fertilizer utilization, but currently there is a lack of mature hole-type fertilization equipment. In view of the above problems, a kind of notched precision hole-fertilizing apparatus was designed, which was used for granular fertilizer. The main structure and working parameters of the device were determined through theoretical analysis, and the analyzing of the shape of fertilizer cavity was focused on. The discrete element method (EDEM) was used to simulate and analyze the filling performance and fertilizer group movements under different conditions. The simulated results showed that the fertilizer cavity shape, operation speed and the fertilizing amount had significant influence on the fertilizing amount coefficient of variation between holes. With the increase of the operating speed and the reduction of fertilizing amount, the variation coefficient of fertilizing amount between holes was increased. Circular-type fertilizer cavity had the best stability in four kinds of shapes. The operating speed and fertilizer cavity shape had significant influence on the fertilizer disturbance coefficient. The time of fertilizer plate passing through the box and the form and size of disturbance on the fertilizer were main reasons affecting the stability of fertilization. Taking the qualified rate of fertilizing amount and coefficient of variation between holes as indicators, four types of fertilizer plates were arranged as verification test of at working speed of 7km/h and fertilizing amount of 300kg/hm2. The results showed that the performance of the circular-type fertilizer cavity was the best with fertilizing amount qualified rate of 94% and the variation coefficient between holes was 6.5%, which satisfied the requirements of hole-fertilizing.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

   下载PDF阅读器