王加一,赵淑红,杨智杰,高连龙,杨悦乾.玉米条带少耕作业驱动式破茬刀设计与试验[J].农业机械学报,2021,52(8):51-61.
WANG Jiayi,ZHAO Shuhong,YANG Zhijie,GAO Lianlong,YANG Yueqian.Design and Experiment of Driving Stubble Cutter for Corn Strip with Less Tillage Operation[J].Transactions of the Chinese Society for Agricultural Machinery,2021,52(8):51-61.
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玉米条带少耕作业驱动式破茬刀设计与试验   [下载全文]
Design and Experiment of Driving Stubble Cutter for Corn Strip with Less Tillage Operation   [Download Pdf][in English]
投稿时间:2020-10-08  
DOI:10.6041/j.issn.1000-1298.2021.08.005
中文关键词:  玉米条带  驱动式破茬刀  耕作阻力  动土量
基金项目:国家重点研发计划项目(2016YFD0300803)
作者单位
王加一 东北农业大学 
赵淑红 东北农业大学 
杨智杰 东北农业大学 
高连龙 东北农业大学 
杨悦乾 东北农业大学 
中文摘要:针对东北玉米垄作区耕整地动土量大和春季降雨量低时土壤墒情不佳、耕作阻力大等问题,提出一种条带式少耕的作业方式,并设计了驱动式破茬刀。通过对驱动式破茬刀的作业工况进行受力分析得出,当破茬刀的滑切角大于或等于与其接触的根茬或土壤的摩擦角时,破茬刀耕作阻力降低。结合根茬与土壤滑动摩擦角的测量和破茬刀的运行速度取值,确定了刀片的刃口曲线方程;进一步通过分析根茬受力状态及测定物料间摩擦角,确定驱动式破茬刀的作业半径为230 mm;最后通过确定刀片的几何尺寸、刀轴和刀盘参数得到驱动式破茬刀。有限元模态分析与强度、刚度校核结果表明,所设计的驱动式破茬刀性能良好、满足设计要求。离散元仿真对比试验表明,所设计的驱动式破茬刀比驱动式圆盘刀组的耕作阻力降低了19.78%、土壤抛起数量降低了13.95%,其耕作阻力与动土量性能均较优。
WANG Jiayi  ZHAO Shuhong  YANG Zhijie  GAO Lianlong  YANG Yueqian
Northeast Agricultural University
Key Words:corn strip  driving stubble cutter  tillage resistance  amount of soil tillage
Abstract:Aiming at the phenomenon such as large amount of soil tillage, low rainfall in spring and high resistance to tillage, a strip type operation method with less tillage was proposed, and a driving stubble cutter was designed. By analyzing the working condition of the driven stubble cutter, the tillage resistance of the stubble cutter can be reduced when the sliding angle of the stubble cutter was greater than or equal to the friction angle of the stubble or soil in contact with it. Combined with the measurement of sliding friction angle between stubble and soil and the speed of stubble cutter, the curve equation of blade edge was determined. The stress state of the stubble was further analyzed and the friction angle between materials was measured, and the radius of the driven stubble cutter was 230 mm. Finally, the driven stubble cutter was obtained by determining the geometric size, cutter shaft and cutter head of the blade. Then, the finite element simulation model was used to verify the stability and performance of stubble cutter, and the discrete element simulation experiment was used to compare the performance and effect of stubble cutter operation. The results of the analysis and verification of the finite element simulation modal showed that the driven stubble cutter met the design requirements. The experimental results of discrete element simulation showed that the tillage resistance of the driven stubble cutter was 19.78% lower than that of the driven disc cutter, and the amount of soil throwing was 13.95% lower than that of the driven disc cutter. Therefore, the performance of driven stubble cutter in tillage resistance and soil moving capacity was better.

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.

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