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关于土垡运动轨迹的研究,是随着高速犁的研制而发展起来的。土垡沿犁体曲面的相对运动速度和绝对速度,同土垡各点的运动轨迹有密切关系。本文介绍了英、德、苏、日等国有关土垡运动轨迹的研究。其中包括土垡尺寸和耕作速度对轨迹形状的影响,土粒进入犁铧的方向、土垡沿犁体曲面滑动时所需的力以及土垡各点的轨迹的测定和绘制方法等。在分析轨迹的进入方向时,作者进行了一些数学论证。
The study on the movement of soil 垡 developed with the development of high-speed plow. The relative velocities and absolute velocities of the soil along the plow body surface are closely related to the motion trajectories of each point of the soil. This article introduces the research on the trajectory of earth 垡 in England, Germany, the Soviet Union and Japan. These include the effect of soil size and tillage speed on the trajectory shape, the direction in which the soil particles enter the plowshare, the force required for the soil to slide along the surface of the plow body, and the trajectory determination and drawing method for each point of the soil. When analyzing the direction of trajectory entry, the author made some mathematical proofs.