油菜直播机铧式开畦沟前犁曲面分析与阻力特性试验  

Surface Analysis and Resistance Characteristics Experiment on Ditch Plow Ahead of Direct Rapeseed Seeder

作　　者：张青松[1] 汲文峰[1] 廖宜涛[1] 廖庆喜[1] 

机构地区：[1]华中农业大学工学院,武汉430070

出　　处：《农业机械学报》2014年第2期130-135,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(51105161);'十二五'国家科技支撑计划资助项目(2013BAD08B02)

摘　　要：阐述了铧式开畦沟前犁装置的基本结构组成，比较分析了铧式开畦沟前犁装置翻土型犁体曲面和改进型碎土型犁体曲面特征，提出以犁体牵引阻力、犁耕比阻及功耗为主要评价指标，借助高速数字化土槽试验平台，开展了前进速度、沟深、沟宽、土壤坚实度等影响要素的试验研究。试验结果表明：沟深对牵引阻力、犁耕比阻影响最显著，前进速度、沟深对功耗影响最显著；改进型犁体装置牵引阻力、犁耕比阻、功耗都分别为原设计犁体的35％一50％。Since ditch plow of direct rapeseed seeder would directly affect ditch quality and power consumption, a ditch plow and an optimized plow were designed and studied comparatively. The basic structure of the ditch plow was investigated and the characteristic of the digging-type surface of ditch plow and the smashing-type surface of the optimized plow were comparatively analyzed. Furthermore, taking traction resistance, plowing specific resistance, and power consumption as the evaluation indices, the experimental research on the impact factors of forward speed, ditch depth, ditch width, soil firmness were conducted by the high speed digitized soil bin platform. The experimental results showed that the greatest impact factor on traction resistance and plowing specific resistance was ditch depth, and the greatest impact factor on power consumption were forward speed and ditch depth. The traction resistance, plowing specific resistance, power consumption of the optimized plow were all only 35% -50% of the ditch plow＇s respectively. The research conclusion had great theoretical value and practical significance to the optimization of ditch plow and the power consumption reduction of precision rapeseed planter.

关 键 词：油菜直播 机开畦沟犁 曲面分析 牵引阻力 犁耕比阻 功耗 

分 类 号：S222.121[农业科学—农业机械化工程]