侯守印,陈海涛,史乃煜,邹震,纪文义,王业成.双自由度多铰接仿形免耕精量播种单体设计与试验[J].农业机械学报,2019,50(4):92-101.
HOU Shouyin,CHEN Haitao,SHI Naiyu,ZOU Zhen,JI Wenyi,WANG Yecheng.Design and Experiment of Two-degree-of-freedom Multi-articulated Profiling No-tillage Precision Drill Unit[J].Transactions of the Chinese Society for Agricultural Machinery,2019,50(4):92-101.
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双自由度多铰接仿形免耕精量播种单体设计与试验   [下载全文]
Design and Experiment of Two-degree-of-freedom Multi-articulated Profiling No-tillage Precision Drill Unit   [Download Pdf][in English]
投稿时间:2019-01-29  
DOI:10.6041/j.issn.1000-1298.2019.04.011
中文关键词:  播种单体  双自由度  多铰接仿形  免耕
基金项目:国家重点研发计划项目(2018YFD0201004)、现代农业产业技术体系建设专项资金项目(GARS–04)和黑龙江省普通高等学校东北农业大学工程学院重点实验室开放课题项目(KF18-05)
作者单位
侯守印 东北农业大学 
陈海涛 东北农业大学 
史乃煜 东北农业大学 
邹震 东北农业大学 
纪文义 东北农业大学 
王业成 东北农业大学 
中文摘要:针对2BMFJ系列原茬地免耕覆秸播种机播后镇压效果和播种深度一致性不理想的问题,设计了双自由度多铰接仿形免耕精量播种单体,应用保守系拉格朗日方程建立了种沟深度数学模型,初步确定了影响种沟深度的关键结构与工作参数。采用四因素五水平二次回归正交旋转中心组合试验方法,选取弹簧初始增量、初始牵引角、弹簧刚度、机具作业速度为影响因素,开沟深度合格率、土壤坚实度合格率和开沟深度变异系数为性能评价指标,得到影响开沟深度合格率各因素由大到小顺序为:弹簧刚度、机具作业速度、弹簧初始增量、初始牵引角,影响土壤坚实度合格率各因素由大到小顺序为:弹簧刚度、机具作业速度、初始牵引角、弹簧初始增量,影响开沟深度变异系数各因素由大到小顺序为:初始牵引角、机具作业速度、弹簧刚度、弹簧初始增量。对试验数据进行优化处理,结果表明,在初始牵引角0°、弹簧刚度10N/mm条件下,弹簧初始增量15~19.5mm、机具作业速度6.7~7.8km/h范围内,开沟深度合格率大于95%,土壤坚实度合格率大于95%,开沟深度变异系数小于10%。
HOU Shouyin  CHEN Haitao  SHI Naiyu  ZOU Zhen  JI Wenyi  WANG Yecheng
Northeast Agricultural University,Northeast Agricultural University,Northeast Agricultural University,Northeast Agricultural University,Northeast Agricultural University and Northeast Agricultural University
Key Words:drill unit  two-degrees-of-freedom  multi-articulated profiling  no-tillage
Abstract:Based on the design concept of 2BMFJ series no-tillage precision planter, which is light weight and uniform in sowing depth, a two-degree-of-freedom combined profiling no-tillage precision drill unit was designed. Based on Lagrange equation, a mathematical model of ditching depth of precision drill unit was established, and the key structure and working parameters affecting the ditching depth were determined. The autumn untreated maize stubble field was selected as the test plot. Four-factor and five-level quadratic regression orthogonal rotation center combination test method was applied, experimental optimization on structure and working parameters affecting the performance of precision drill unit was done, and the initial increment of spring, initial traction angle, spring stiffness and working speed were selected as influencing factors. The qualified rate of ditching depth, soil hardness and variation coefficient of ditching depth were selected as evaluation indexes, the primary and secondary relations of factors affecting the qualified rate of ditching depth were obtained as follows: spring stiffness, working speed, initial increment of spring and initial traction angle, the primary and secondary order of factors affecting qualified rate of soil hardness were as follows: spring stiffness, working speed, initial traction angle and initial increment of spring,and the primary and secondary order of the factors affecting the variation coefficient of ditching depth were follows: initial traction angle, working speed, spring stiffness and initial increment of spring. Design-Expert 6.0.10 software was used to establish regression equation, significance and optimization parameters of the test data were tested, the results showed that under the conditions of initial traction angle of 0°, spring stiffness of 10N/mm, initial spring increment of 15~19.5mm and working speed of 6.7~7.8km/h, the qualified rate of ditching depth was more than 95%, the qualified rate of soil hardness was more than 95%,and the variation coefficient of ditching depth was less than 10%.

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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