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本文把存在于支承面为零的最小圆盘角与圆盘的球面半径或锥角之间,以及圆盘角与圆盘直径、耕深之间的函数关系推导出来了。在说明圆盘支承面的有无方面,最小即临界圆盘角被证明是有用的。由于支承面对于土壤的反力和力螺旋线有重要的影响,从而对于机具的性能有重要影响。在俯仰平面中,力螺旋线斜率的变化不能完全靠支承面的有无来加以说明。总之,为了使牵引阻力最小和入土能力最强(最小的垂直反力),当使用双列圆盘耙时,小球面圆盘优于锥面或大直径圆盘。当使用单列圆盘耙时,圆盘的尺寸大小和型式对于阻力和入性能几乎没有影响。
In this paper, we derive the relationship between the minimum disc angle, which is zero at the bearing surface, and the spherical radius or cone angle of the disc, as well as the function of the disc angle as a function of disc diameter and depth of field. In terms of the presence or absence of disk support surfaces, the minimum, critical disk angle proved to be useful. The bearing surface has an important influence on the performance of the implement due to the important influence of the bearing surface against the soil reaction force and the force spiral. In the pitch plane, the change in the slope of the force helix can not be completely explained by the presence or absence of the bearing surface. In summary, when using a dual-row disk harrow, the pellet disk is superior to the cone or large-diameter disk in order to minimize drag-in and soil penetration (minimum vertical reaction force). When using a single disc harrow, the size and type of disc have little or no effect on drag and run-in performance.