STRUCTURAL PARAMETERS OPTIMIZATION AND EXPERIMENT OF TRENCHING BLADES VIA DEM

This study developed a chain counter-rotating trenching and backfilling device to reduce high tillage resistance in orchard operations. A 3D mathematical model of the trenching blade was created using Cartesian coordinate transformation. Taking curvature (β), curve angle (α), bend radius (R), and cone residual angle (θ) as experimental factors, and soil cutting resistance as the evaluation index. The optimized parameters were β=95°, α=10°, R=24 mm, θ=39°. Bench tests were performed with the optimal parameters, and the results showed that the optimized ditching blade reduced the resistance by 18.7% compared to the ordinary trenching blades. Field test results showed a 9.64% reduction in furrowing torque.