摘要
【目的】降低“绿洲一号”穴盘苗移栽破碎率,优化移栽机构,为菌草移栽机械的设计提供参考。【方法】采用AG-X拉力试验机测定“绿洲一号”穴盘苗钵体的移栽压缩力学指标;利用Box-Behnken设计试验方案,研究压缩夹持角度、泥炭碳土体积分数、含水率3个因素对钵体最大抗压力以及压缩破碎量的影响;以最大抗压力和压缩破碎量最大值为优化目标,采用Design-Expert软件分析,得到钵体最优力学特性因素值。【结果】“绿洲一号”钵体移栽的抗压力随着压缩位移的增大而增大;最大抗压力的影响因素表现为:泥炭碳土体积分数>含水率>压缩夹持角度;压缩破碎量的影响因素表现为:泥炭碳土体积分数>含水率>压缩夹持角度;在压缩夹持角度10.10°、泥炭碳土体积分数51.96%、含水率68.16%条件下,钵体的力学特性最优,通过钵体移栽抗压验证试验获得最大抗压力和压缩破碎量,试验优化响应值与验证试验响应值的最大偏差仅4.06%。【结论】钵体移栽抗压试验结果表明抗压力随着压缩位移的增大而增大,并得到了移栽抗压试验的最优力学特性指标。
【Objective】The mechanical characteristic of“Oasis No.1”plug seedling bowl was measured to develop and optimize transplanting machine and reduce fracture rate of plug seedling,to provide mechanical references for the design of subsequent mushroom and grass transplanting machinery.【Method】A mechanical compression test was carried out on“Oasis No.1”plug seedling bowl using AG-X tensile testing machine,and Box-Behnken experimental design was employed to investigate the effects of 3 factors(compression clamping angle,peat soil volume fraction and moisture content)on the maximum compressive strength and compressive fracture amount of the bowl.Then the optimal factor values for the mechanical characteristics of the bowl were obtained using Design-Expert software to maximize the maximum compressive strength and compressive fracture amount.【Result】The pressure resistance of the“Oasis No.1”seedling bowl increased with the increase of compression displacement.The order of the influencing factors of the maximum pressure resistance was volume ratio of peat soil>moisture content>compression holding angle.The influencing factors of crushing amount were as follows:volume fraction of peat soil>water content>compression holding angle,under the conditions of compression holding angle of 10.10°,volume fraction of peat soil of 51.96%,moisture content of 68.16%.The mechanical properties of the bowl body were the best,and the maximum compressive strength and crushing capacity were obtained by carrying out the bowl body compressive test.The maximum deviation between the response value of the optimized test and the response value of the verification test was only 4.06%.【Conclusion】In the compressive test of transplanting“Oasis No.1”plug seedling bowl,the compression displacement increased gradually and the compressive strength increased with the increase of the compressive strength.The optimal factor level of the compressive strength of the bowl was obtained.
作者
青家兴
刘永强
赖鸿康
叶大鹏
翁海勇
谢立敏
QING Jiaxing;LIU Yongqiang;LAI Hongkang;YE Dapeng;WENG Haiyong;XIE Limin(College of Mechanical and Electrical Engineering,Fujian Agriculture and Forestry University;Key Laboratory of Agricultural Information Sensing Technology,Fuzhou,Fujian 350002,China)
出处
《福建农林大学学报（自然科学版）》
CAS
CSCD
北大核心
2024年第6期858-864,共7页
Journal of Fujian Agriculture and Forestry University:Natural Science Edition
基金
福建省林业科学技术攻关项目(2023FKJ01)
福建省科技计划重大专项(2021NZ029009)
福建农林大学交叉学科项目(XKJC-712021030)
福建省大学生创新创业训练计划项目(S202310389049)。
关键词
“绿洲一号”
穴盘苗钵体
移栽
抗压试验
“Oasis No.1”
plug seedling bowl
transplanting
compressive test
