基于虚拟正交试验果园垄面割草机侧刀盘切割性能分析

为解决矮砧密植型果园生草制管理所面临的垄面草体处理困难的问题，通过三维设计软件建立了果园垄面割草机侧盘三维实体模型，并进行前进速度、刀盘转速、刀片数和刃线长度对重割率影响的优化仿真试验，利用动力学分析软件ADAMS得到刀片运动轨迹并计算重割面积，对模型进行四因素三水平虚拟正交试验，利用响应面分析法进行显著性分析。结果表明，最佳取值为前进速度A=2 m·s-1，刀盘转速B=2 500 rad·min-1，刀片数C=2。刃线长度D=55 mm时，重割率最低为16.6%。通过田间试验验证该模型仿真设计满足果园割草机技术要求，研究结果可为果园垄面割草机结构设计和参数优化提供参考。

Cutting Performance of Side Cutter Head of Orchard Mower Based on Virtual Orthogonal Test

In order to solve the problem of difficult handling of ridge grass in the management of the acacia planting orchard, this paper established a three-dimensional solid model of the side dish of the orchard lawn mower by three-dimensional design software and carries forward speed, cutter speed and blade, and optimized simulation experiment of the influence on the number and the length of the edge line on the rate of the cutting rate. The dynamic analysis software ADAMS was used to obtain the blade motion trajectory and calculate the repeat cutting area. The four-factor and three-level virtual orthogonal test was carried out on the model, and the response surface analysis method was used to make significant analysis. The results showed that the best values were the forward speed A=2 m·s-1, the cutter speed B=2 500 rad·min-1, the number of blades C=2. When the blade length D was 55 mm, the minimum cutting rate was 16.6%. The field simulation test verified that the model simulation design meet the technical requirements of the orchard mower, and the research results provided reference for the structural design and parameter optimization of the orchard mower lawn mower.