Design and simulation analysis of furrowing and fertilization equipment based on segmented screw mechanism

In response to the planting patterns and trenching fertilization requirements in hilly orchards in China, this study employed discrete element simulation software to establish soil particle models and soil-trenching equipment interaction models. The aim was to investigate the influence of structural parameters and operating parameters on the energy consumption of segmented trenchers during operation. A response surface experimental design was adopted to simulate the trenching process. Based on the research results regarding the effects of forward speed, trenching speed, and helical combinations on segmented trenching equipment, it was found that the segmented helical blades have lower operating resistance torque and less disturbance to the underlying soil. It was also confirmed that the pitch and rotational speed have a significant impact on energy consumption during operation. According to the response surface experimental results with the lowest operating resistance torque and a homogenization degree approaching 1 as indicators, the following combination of key influencing factors was obtained: The forward speed is 0.21 m/s, the trenching speed is 350 r/min, the segmented helical pitch is 138 mm, and the working torque is 47.35 N·m at this time. This combination of parameters can provide a reference for optimizing the design and practical application of segmented trenchers.