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Shank Selection for Disc-Ripper

Shank Selection for Disc-Ripper
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摘要 The new sustainable tillage system needs new machines which are the combination of well accepted disc harrow and cultivator or chisel/ripper. To find the type of ripper shank we have done a research program with 7 different shape and size tools. The geometrical parameters were determined in laboratory, the performance (loosening effect, depth etc) and draft requirements were measured on loamy soil stubble field (the speed range: 2.5-7.5 krrdh). Developing a combined evaluation system-based on performance and draft data-to select the most favorable shank type for our condition was found one which has the following features: the size of the point: rake angle = 25°, length = 240 mm, width = 80mm; the equation of the shank curve: y = axb, where a = 2-3.5 and b = 0.04-0.05.
出处 《Journal of Agricultural Science and Technology(B)》 2011年第4期532-539,共8页 农业科学与技术(B)
关键词 Disc-ripper SHANK soil loosing sustainable tillage selection. 手柄 光盘 耕作系统 参数测定 条件选择 评价系统 曲线方程 圆盘耙
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