扎穴施肥单体仿真分析与试验

doi:10.13733/j.jcam.issn.2095-5553.2024.02.009

摘要/Abstract

摘要： 为改进高秆作物传统撒播、条播施肥方式肥料利用率低问题,设计一种高地隙穴施肥作业车,该作业车扎穴施肥单体两侧安装有探针传感器,可以根据作物植株位置进行精准穴施肥。基于RecurDyn-EDEM、EDEM-ANSYS对扎穴施肥机构进行多体动力学—离散元、离散元—有限元仿真分析,并进行扎穴排肥试验,仿真试验明确扎穴施肥单体的运动机理和土壤成穴情况,量化施肥量与排肥器开度之间的函数关系;在扎穴施肥过程中,鸭嘴总变形为0.005 mm,等效应力最大为4.142 2 MPa,远小于结构钢屈服强度,鸭嘴不会发生应力变形。扎穴排肥试验进一步确定施肥单体的实用性,修正施肥量与排肥器开度之间的函数关系,可以针对不同农作物调节排肥轮开度进行精准施肥。

关键词: 高地隙穴施肥作业车, 中耕管理, 穴施肥, 排肥轮

Abstract: In order to improve the problem of low fertilizer utilization rate of traditional sowing and strip sowing fertilization methods of tall crops, a high-tech cavity fertilization operation vehicle was designed, and probe sensors were installed on both sides of the hole fertilization monomer of the operation vehicle, which could carry out accurate hole fertilization according to the position of crop plants. Based on RecurDyn-EDEM and EDEM-ANSYS, the multi-body dynamics-discrete element, discrete element-finite element simulation analysis of the pit fertilization mechanism was carried out, and the pit fertilization test was carried out, which clarified the movement mechanism of the pit fertilization monomer and the soil hole formation, and quantified the functional relationship between the amount of fertilizer application and the opening of the manure discharger, and the total deformation of the duckbill was 0.005 mm, and the maximum equivalent stress was 4.142 2 MPa, which was much smaller than the yield strength of structural steel, and the duckbill would not undergo stress deformation. The practicability of the fertilizer monomer was further determined, and the functional relationship between the amount of fertilizer applied and the opening of the fertilizer drainer was corrected, the opening of the manure discharge wheel could be adjusted for different crops for precise fertilization.

Key words: high-tech cavity fertilization operation vehicle, cultivation management, hole fertilization, manure removal wheel

中图分类号:

S224.4

古冬冬, 张征, 杨杰, 曹再辉, 景建群, 李国强. 扎穴施肥单体仿真分析与试验[J]. 中国农机化学报, 2024, 45(2): 55-61.

Gu Dongdong, Zhang Zheng, Yang Jie, Cao Zaihui, Jing Jianqun, Li Guoqiang. Simulation analysis and test of piercing fertilization monomer[J]. Journal of Chinese Agricultural Mechanization, 2024, 45(2): 55-61.

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