Authors

Abstract

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.

Abstract in Chinese

针对果园开沟过程中耕作阻力大的问题，本文提出了一种链条反向旋转开沟回填装置。通过笛卡尔坐标系变换，建立开沟刀的三维数学描述模型。以曲率(β)，曲线角度(α)，弯折半径(R)和锥余角(θ)为试验因素，以切土阻力为评价指标进行试验，优化后的参数为β=95°，α=10°，R=24 mm，θ=39°。以最优参数进行台架和田间试验，台架试验表明，相对于普通开沟刀，优化后的开沟刀阻力减少了18.7%，田间试验表明，相对于普通开沟刀，装配有BS刀的开沟扭矩降低了9.64%。