弹齿式苗间除草装置关键部件设计与试验  

Design and Experiment of Key Components of Trash Cultivator's Working in Paddy Rice Seeding Lines

作　　者：陈振歆[1] 王金武[1] 牛春亮[1] 葛宜元[1] 王金峰[1] 

机构地区：[1]东北农业大学工程学院,哈尔滨150030

出　　处：《农业机械学报》2010年第6期81-86,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：黑龙江省科技攻关资助项目(GB07B106)

摘　　要：设计了一种水田苗间除草作业的弹齿式除草装置,采用钢丝软轴传动,除草盘为弧形。分别在秧苗生长到第7天和第14天时采用二次旋转正交设计进行土槽试验,利用Design-Expert软件分析,获得除草盘转速、机器前进速度、耕作深度之间交互作用及对除草率和伤苗率的影响。最终确定第7天作业时除草装置的最佳工作参数为:除草盘转速230 r/min、机器前进速度1.02 m/s、耕作深度18 mm,此时除草率73%及伤苗率0.13%;第14天作业的最优组合为:除草盘转速230 r/min,机器前进速度0.48 m/s,耕作深度27 mm。根据第7天试验最佳工作参数组合进行验证试验,结果表明此参数组合能满足除草率要求,且伤苗率最小。A spring-tooth weeding working in paddy field was designed.Weed cutter with arc-shaped bend could reduce the injury rate of seedlings in some extent.The steel soft shaft was selected as transmission parts of the device.The quadratic rotation-orthogonal test was applied in 7 and 14 days respectively.The effects of interaction of cutter rotation speed,forward velocity of machine,buried depth on weeding ratio and seeding injury ratio were attained.The optimal combination in 7 days＇ test was： the cutter rotation speed was 230r/min,the forward velocity was 1.02m/s,the buried depth was 18 mm,weeding rate was 73%,and miller injury rate was 0.13%.The optimal combination in 14 days＇ test was： the cutter rotation speed was 230r/min,the forward velocity was 0.48m/s,the buried depth was 27mm.The verification test was carried on according to the optimal operational parameters combination.The results showed that this operational parameter combination could fulfils the request of weeding ratio;meanwhile,the seeding injury ratio was the lowest.

关 键 词：机械式除草机 弹齿 设计 试验 

分 类 号：S224.15[农业科学—农业机械化工程]