DOI：10.3969/j.issn.1672-3872.2025.22.002
基金项目：广东省科技创新战略专项资金项目“基于双目视觉的无人山药收获机”（pdjh2023b0527）；江门市科技计划项目“基于机器视觉的肉桂加工产线及产业应用研究”（2022660500120010321）
作 者：王沁园1 ，陈泽洪1 ，黄 辉1 ，黄光毅1 ，曾志敏2 ，杨保健1
（1. 五邑大学机械与自动化工程学院，广东 江门 529020；2. 广东意通新能源科技有限公司，广东 江门 529030）
摘 要：【目的】解决丘陵山地人工割草效率低，而使用高转速刀刃的割草设备存在较大安全隐患等问题。【方法】结合丘陵地区的地势起伏状况、杂草类型等，设计了一款割草机切割装置。1）使用SolidWorks软件构建割草机切割装置三维模型，通过EDEM软件构建草的离散元模型，并对作业过程进行单因素仿真试验，确定切割装置参数最优范围。2）以割草机切割装置的前进速度、割刀转速和刀刃长度为试验因素，以作业合格率和割刀与草之间的切割力为试验指标，进行三因素三水平正交回归试验。3）通过Design-Expert软件建立数学回归方程和响应曲面模型，分析了不同参数对切割效果的影响，并利用软件优化了切割系统。【结果】切割装置最优工作参数为：前进速度1.4 m/s、割刀转速500 r/min、刀刃长度65 mm，在最佳工作参数下，割草机作业合格率为98.25%，切割力为124.06 N；样机试验结果与仿真试验结果相近，且割刀无明显磨损，表明该装置满足丘陵山地的割草需求。【结论】该装置结构简洁、便于维护，可有效提高工作效率，降低人工成本，并确保在丘陵地区实现高效、均匀的割草作业，有助于提升丘陵地区机械化水平，推动农业可持续发展。
关键词：果园机械；切割装置；离散元仿真；EDEM；样机试验
Design and Test of Mower Cutting System Parameters Based on EDEM
Author: Wang Qinyuan1 , Chen Zehong1 , Huang Hui1 , Huang Guangyi1 , Zeng Zhimin2 , Yang Baojian1
(1.School of Mechanical and Automation Engineering, Wuyi University, Jiangmen 529020, China; 2.Guangdong Yitong New Energy Technology Co., Ltd., Jiangmen 529030, China)
Abstract: [Objective] To solve the problems of low efficiency of manual mowing in hilly and mountainous areas, and the significant safety hazards of mowing equipment using high-speed blades. [Method] A lawn mower cutting device was designed based on the terrain undulations and weed types in hilly areas. 1) Build a 3D model of the lawn mower cutting device using SolidWorks software, construct a discrete element model of the grass using EDEM software, and conduct single factor simulation experiments on the operation process to determine the optimal range of cutting device parameters. 2) Conduct a three factor three-level orthogonal regression experiment with the forward speed of the lawn mower cutting device, the cutting blade speed, and the blade length as experimental factors, and the qualified rate of operation and cutting force between the cutting blade and the grass as experimental indicators. 3) We established mathematical regression equations and response surface models using Design-Expert software, analyzed the influence of different parameters on cutting effects, and optimized the cutting system using the software. [Result] The optimal working parameters of the cutting device are: forward speed of 1.4 m/s, cutting blade speed of 500 r/min, and blade length of 65 mm. Under the optimal working parameters, the qualified rate of the lawn mower operation is 98.25%, and the cutting force is 124.06 N. The prototype test results are similar to the simulation test results, and the cutting blade has no obvious wear, indicating that the device meets the mowing needs of hilly and mountainous areas. [Conclusion] The device has a simple structure and is easy to maintain, which can effectively improve work efficiency, reduce labor costs, and ensure efficient and uniform mowing operations in hilly areas. It helps to improve the mechanization level in hilly areas and promote sustainable agricultural development.
Keywords: orchard machinery; cutting device; discrete element simulation; EDEM; prototype test
引文信息：[1]王沁园，陈泽洪，黄辉，等.基于EDEM的割草机切割装置参数设计与试验[J].南方农机，2025，56(22)：7-13.
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