Authors

Abstract

To explore the operational performance of a ridge roller under two different working modes, namely, linear arrangement (LA) and interleaved arrangement (IA) of adjacent ridging shovels, firstly, theoretical analysis was conducted to conclude that the operational resistance of IA is greater than that of LA. Secondly, a discrete element simulation method was employed to establish a discrete element simulation model. The extracted data verified the conclusions of the theoretical analysis. Qualitative analysis was conducted based on the formed ridge profile, indicating that LA has a better ridge forming effect than IA. Finally, field experiments were conducted, with the operating speed of the ridge roller (1.5 km/h, 3 km/h, 4.5 km/h) and different installation distances between adjacent ridging shovels (0, 240 mm, 480 mm) as experimental factors. The average operational resistance, the distance between adjacent ridge tops, and the height difference at the bottom of the ridge furrow were used as indicators for a full-factor experiment. It was concluded that under the same conditions, LA has the best ridge forming effect but requires the greatest resistance, while IA can effectively reduce resistance but has a poorer ridge forming effect. This study provides a theoretical basis and guidance for tillage and soil preparation operations.

Abstract in Chinese

为探究起垄机两种不同作业模式，即相邻起垄铲直线排布（LA）和交错排布（IA）下的作业性能，首先通过理论分析得出IA的作业阻力大于LA；其次采用离散元仿真模拟方法，建立离散元仿真模型，通过提取数据验证了理论分析的结论，并通过形成的垄体断面轮廓进行定性分析，得出LA的垄体成型效果优于IA；最后通过田间试验，以起垄机作业速度（1.5 km/h、3 km/h、4.5 km/h）和相邻起垄铲不同前后安装距离（0、240 mm、480 mm）为试验因素，以平均作业阻力和相邻垄体垄顶距离和垄沟最底端高度差为指标进行全因素试验，得出其他条件相同情况下，LA的垄体成型效果最好，但是所需阻力最大，IA阻力能有效降低但是垄体成型效果较差。本研究可为耕整地作业过程提供一定的理论依据和指导作用。