## 4 Conclusions  
The potato soil aggregate particle model and the overburden rotating plate mechanism model were constructed. The effects of blade rack types, blade speed, lifting chain bar line speed, and device inclination angle on the crushing of soil aggregates were studied, and the tilt angle of the overburden rotating plate mechanism was obtained by taking the debris removal rate, the percentage of bond breakage between potato soil particles, and the percentage of bond breakage between soil particles as evaluation indexes. Specific conclusions are as follows:  
Figure 16: Response surface of the effect of interaction between blade speed and lift chain bar line speed on the percentage of bond breakage between soil particles.  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**Tests**} & **Tilt Angle/** & **Blade** & **Lift Chain Bar** & **The Debris** & **The Percentage of Bond breakage** & **The Percentage of Bond breakage** \\  & \(\circ\) & **Speed/m\(\cdot\)s\({}^{-1}\)** & **m\(\cdot\)s\({}^{-1}\)** & **Rate/\%** & **Soil Particles/\%** & **Soil Particles/\%** \\ \hline \hline
1 & & & & 98.9 & 100.0 & 100.0 \\
2 & 40 & 0.4 & 0.307 & 99.4 & 99.6 & 99.7 \\
3 & & & & 99.1 & 98.5 & 99.6 \\ \hline \hline \end{tabular}
\end{table}
Table 8: Validation results of the simulation test.  
1. Different models of potato soil agglomerates using particle bonding models provide a new method to study the fragmentation and separation of potato and soil;
2. Design-Expert was used to construct response surfaces for the potato soil agglomerate separation rate, the soil particle breakage ratio, and the soil particle bond breakage ratio. The relationships between blade speed, lift chain bar line speed, tilt angle, debris removal rate, the percentage of bond breakage between potato soil particles, and the percentage of bond breakage between soil particles were obtained;
3. The optimum parameters of the overburden rotating plate mechanism were verified through tests to be 0.307 m/s for the lift chain bar line speed, 0.4 m/s for the blade speed, and 40\({}^{\circ}\) for the tilt angle.  
D.Y.: conceptualization, methodology, investigation, writing--original draft preparation, and visualization. W.D.: methodology, resources, writing--review and editing, supervision, and funding acquisition. S.X.: methodology and resources. C.L.: investigation and data curation. Z.R.: project administration. H.Z.: data curation. Y.C.: data curation. Z.Z.: project administration. All authors have read and agreed to the published version of the manuscript.  
This research was funded by the Scientific Research Start-up Foundation for importing the high-level/excellent doctoral talents of Inner Mongolia Agricultural University (Grant number \"NDYB2021-12\"), the Natural Science Foundation of Inner Mongolia Autonomous Region of China (Grant number\"2022 MS05027\"), and the Program for improving the Scientific Research Ability of Youth Teachers of Inner Mongolia Agricultural University (Grant number \"BR220127\").  
Not applicable.  
Data Availability Statement: Data are contained within the article. All the code generated or used during this study is available from the corresponding author.  
The authors declare no conflict of interest.