农业机械学报2025，Vol.56Issue(1)：210-220,11.DOI:10.6041/j.issn.1000-1298.2025.01.021
桑园立式旋转动力耙优化设计与试验
Optimization Design and Experiment of Vertical Rotary Harrow for Mulberry Plantation
摘要
Abstract
The cultivation and land preparation work in mulberry plantations is the important foundation for improving mulberry leaf yield.Based on the mulberry planting mode and the requirements of cultivation and land preparation work,a vertical rotating rotary harrow suitable for mulberry plantations was designed and optimized.According to the mulberry plantation planting and cultivation requirements to determine the rotary harrow machine structure,through the theoretical analysis of the harrow knife operation process and kinematic analysis,the harrow knife structure parameters were determined.Using the discrete element method to simulate the rotary harrow operation process,and the influence of different camber angles on the torque of the harrow knife and working quality of the machine and the variation law of the torque during the harrow operation were analyzed.Taking rotor speed,forward speed and plowing depth as test factors,and taking soil breakage rate,surface flatness after harrowing and soil weight as test indexes,a three-factor,three-level orthogonal rotary combination field test was carried out to analyze the influence of each factor on the operational effect of rotary harrow.The test results showed that the rotor speed and forward speed on the soil breakage rate,harrowing surface flatness and soil weight was very significant;the effect of plowing depth was only significant on the soil breakage rate,and there was no significant effect on the harrowing surface flatness and soil weight.The optimal combination of operating parameters was calculated as follows:rotor speed was 350 r/min,forward speed was 0.7 m/s,plowing depth was 20 cm,soil fragmentation rate was 97.89％,surface flatness was 11.04 mm after harrowing,and soil capacity was 1.11 g/cm3.The verification test was carried out with the optimized operation parameter combination,and the soil breakage rate was 97.29％,surface flatness after harrowing was 11.53 mm,soil capacity was 1.07 g/cm3,which was consistent with the optimized results,and it met the operational requirements.关键词
桑园耕整地/动力耙/离散元仿真/优化设计Key words
mulberry plantation tillage and soil preparation/rotary harrow/discrete element simulation/optimization design分类
农业科技引用本文复制引用
杨庆璐,律政文,闫银发,杨硕,李法德,宋占华,陈玉军..桑园立式旋转动力耙优化设计与试验[J].农业机械学报,2025,56(1):210-220,11.基金项目
财政部和农业农村部:国家现代农业产业技术体系项目(CARS-18-ZJ0402)和山东省现代农业产业技术体系建设项目(SDAIT-18-06) （CARS-18-ZJ0402）
