犂铧磨损后形成背稜。随着背稜的发展,牵引阻力、耗油量以及垂直反力急剧增加,耕作质量变坏,而且降低耕作速度,降低了劳动生产率。 同时对于标准犂铧,其背稜形成后,发展很快,特别是在干燥而坚硬的土壤中耕作时,由于犂刃一旦磨钝成为圆弧,土壤流的方式、压力分布,滑动速度、工作温度就发生了显著的变化,促使背 Plowshares wear to form dorsal ribs. With the development of dorsal ribs, the drag resistance, fuel consumption and vertical reaction force increase sharply, the quality of farming deteriorates, the farming speed is reduced, and the labor productivity is reduced. At the same time for the standard ploughshare, its back edge formation, the rapid development, especially in dry and hard soil farming, the plow blade once blunt become arc, soil flow, pressure distribution, sliding speed, work The temperature has undergone significant changes, prompting the back