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Design and optimization of seedling-feeding device for automatic maize transplanter with maize straw seedling-sprouting tray

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International Journal of Agricultural and Biological Engineering 2015年第6期8卷 1-12页

作者： Zhang Wei niu zhaojun Li Lianhao Hou Yongrui College of Engineering Heilongjiang Bayi Agricultural UniversityDaqin g163319China Tropical Agricultural Machinery Research Institute Chinese Academy of Tropical Agricultural SciencesZhanjiang 524091China

This research aimed to solve current problems in the process of maize transplanting in China such as large labor intensity,low working efficiency and poor *** the basis of the structure of a seedling-sprouting tray made of maize straw and the agronomic requirements of maize production,this study developed a new feeding device for such a sprouting tray,determined the dimensions of the key components in a virtual environment via Solid Edge software and obtained optimal working parameters in combination with *** tests on field validation and maize production were conducted as *** test results showed the importance of the working parameters on an upright degree in descending order(as well as the best working parameters)to be the vertical angle of seedling planting(13.14°),the forward speed of locomotion(0.57 m/s),and the horizontal angle of the seedling box(22.5°).The standard deviation of the field validation was 6.04%,which was within the allowable range to meet the requirements of maize *** with maize transplanting machines(and manual transplanting operations)on the current market,the labor inputs,as well as the rates of spacing and upright degree qualification,omitted planting and the yield using the new feeding device for automatic transplanter with maize straw seedling-sprouting trays increased 0(6.9%),0(3.1%),0(4.5%)and 0(−1.0%),respectively;whereas,the manufacturing cost was reduced by 35.5%.The results can provide a technical basis and reference for subsequent development of automatic transplanters with maize straw seedling-sprouting trays.

关键词： maize seedling-sprouting tray automatic maize transplanter seedling-feeding device optimization

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甘蔗健康种苗双芽段槽带式种植机排种性能优化研究

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农机化研究 2024年第8期46卷 142-150页

作者：牛钊君刘信鹏葛畅韦丽娇李明张坚敏中国热带农业科学院农业机械研究所广东湛江524091 农业农村部热带作物农业装备重点实验室广东湛江524091 中国热带农业科学院南亚热带作物研究所广东湛江524091 湛江市凯翔科技有限公司广东湛江524091 广西双高农业机械有限公司南宁530104

甘蔗健康种苗种植技术是提高单产水平和品质、降低生产成本的有效措施之一,而目前国内甘蔗种植装备不成熟,直接限制了这一技术的推广和应用。为此,以有序排列的甘蔗健康种苗双芽段蔗种为研究对象,对团队研发的2CZD-2A型半自动双芽甘蔗... 详细信息

甘蔗健康种苗种植技术是提高单产水平和品质、降低生产成本的有效措施之一,而目前国内甘蔗种植装备不成熟,直接限制了这一技术的推广和应用。为此,以有序排列的甘蔗健康种苗双芽段蔗种为研究对象,对团队研发的2CZD-2A型半自动双芽甘蔗种植机排种性能进行优化,设计了高频电磁振动自动喂入器与仿形排种同步驱动器。利用Solid Edge ST5三维软件建模进行仿真分析,建立试验台进行多因素正交组合试验,采集数据并利用SPSS进行处理建立回归方程,运用Design Expert绘制响应曲面,分析因素之间交互作用,利用MatLab进行参数优化,最终进行田间试验验证。研究结果表明:同步驱动机构增加了排种均匀度,当带轮转速为10r/s、振动幅度为18.5mm、行进速度为0.65m/s时,排种均匀度达到94.18%,与优化结果偏差小于5%,满足设计要求;高频振动与动力源振动无干涉,验证了振动器梳理方案的可行性,可为全自动种植机的研发提供参考。

关键词：甘蔗健康种苗双芽段种植机排种性能优化

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Design and experimental research on disc-type seeding device for single-bud sugarcane seeds

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International Journal of Agricultural and Biological Engineering 2023年第2期16卷 115-124页

作者： Xinpeng Liu zhaojun niu Ming Li Mingxin Hou Lijiao Wei Yuan Zhang Li Huang South Subtropical Crop Research Institute China Academy of Tropical Agricultural SciencesZhanjiang 524091GuangdongChina Chinese Academy of Tropical Agricultural Sciences Institute of Agricultural Machinery ResearchZhanjiang 524091GuangdongChina Guangdong Ocean University School of Mechanical and Power EngineeringZhanjiang 524091GuangdongChina

Mechanized sugarcane seeding is one of the effective technical measures for improving seeding uniformity and operation ***,the imperfection of supporting equipment limits the promotion and application of this *** there are some problems in domestic sugarcane planting machines currently,such as large auxiliary labor,high labor intensity,low seeding uniformity,and large amount of seeds,a disc-type single-bud sugarcane seed metering device was innovatively designed on the basis of the analysis of physical properties of single-bud sugarcane seeds and the combination with agronomic requirements for field planting in this *** was used to simulate and analyze the mechanism,check the theoretical parameters,and process the test *** single-factor experiments,the effective factors affecting seeding uniformity were determined.A multi-factor orthogonal rotation test was designed,data were collected and then SPSS was used to get the optimal parameters for the seeding uniformity:the advancement speed of machine is 0.22 m/s,the number of disc seeding grooves is 10,the rotating disc speed is 0.18 r/s,and the seeding uniformity is 86.2%;the seeding uniformity was verified by field trial,and the results showed that the average seeding uniformity of the field verification was 83%,with the error 3.2% relative to the optimization *** relative error is within 10%,indicating that the optimization result is reliable and meets the requirements of seeding uniformity,thus providing theoretical basis for the research and development of the disc-type single-bud seeding device.

关键词： sugarcane single-bud sugarcane seed disc-type seeding device seeding uniformity

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Design and Experimental Analysis of Full-automatic Virus-free Seedcane Seed-metering Device

Design and Experimental Analysis of Full-automatic Virus-fre...

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2020年海南科技学术论坛

作者： Dong Xuehu Li Ming niu zhaojun Hu Junxi Agricultural Machinery Institute Chinese Academy of Tropical Agricultural Sciences Tropical Crops Agricultural Equipment Key Laboratory Ministry of Agriculture College of Engineering Huazhong Agricultural University

Virus-free seedcane planting technology is one of the main technical measures for improving the unit-yield level and quality of *** solve the defects of domestic sugarcane planting operation,including low level of mechanization,adoption of traditional semi-automatic real-time cutter type dual-bud seed stem,manual operation of seed extraction and feeding,low operation efficiency,high labor intensity,and unstable planting quality,a hydraulic seed-metering device longitudinally vibrating for arranging and horizontally provided with trough belt for seed feeding for virus-free seedcane is designed in this *** Edge ST5 is adopted to build a 3 D model of the device for motion simulation,an experimental prototype is manufactured for field trial,multifactorial experiment is designed to collect data,and SPSS is adopted for statistical *** of the contribution of the factors to the target value impact shows that the degree of contribution of the center distance of slot is larger than that of the metering frequency,and that of the metering frequency is larger than that of the forward velocity of the *** of regression equations shows that in the case that the forward velocity of the engine is x1=0.4 m/s,the metering frequency is x2=2 seed/s,and in the case that the length of the driving belt is x3=1.5 m,the acceptability of row spacing is up to 89.6%,and the variable coefficient of row spacing is *** has been proved that the difference between the acceptability of row spacing and the result of theoretical analysis is not larger than 10%,which meets the design requirements.

关键词： virus-free seedcane automatic planter seedmetering device design experimental analysis

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αExtractor: a system for automatic extraction of chemical information from biomedical literature

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Science China(Life Sciences) 2024年第3期67卷 618-621页

作者： Jiacheng Xiong Xiaohong Liu zhaojun Li Hongzhong Xiao Guangchao Wang Zhenjiang niu Chaoyuan Fei Feisheng Zhong Gang Wang Wei Zhang Zunyun Fu Zhiguo Liu Kaixian Chen Hualiang Jiang Mingyue Zheng Drug Discovery and Design Center State Key Laboratory of Drug ResearchShanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China University of Chinese Academy of Sciences Beijing 100049China AI Department Suzhou Alphama Biotechnology Co.Ltd.Suzhou 215125China College of Computer and Information Engineering Dezhou UniversityDezhou 253023China

Dear Editor,Great progress has been made using artificial intelligence(AI) techniques in learning knowledge from biomedical databases in recent years, revolutionizing the study of many fields, such as protein structure prediction and protein design(Madani et al., 2023). However, there is massive biomedical knowledge not curated in the form of structured data but hidden in primary scientific literature.

关键词： has such knowledge

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栽植机构的运动学建模与参数优化——基于夹持式玉米植质钵育苗全自动移栽机

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农机化研究 2013年第10期35卷 11-15页

作者：付晓明张伟牛钊军黑龙江八一农垦大学工程学院黑龙江大庆163319

针对目前玉米作业中半自动移栽机需要人工喂苗、工作效率低等缺点以及国外自动移栽机的结构复杂、制造成本高和工作效率低等问题,以高速水稻植质钵育幼苗移栽机的工作原理和特点为理论基础,设计了一种应用于玉米植质钵育苗全自动移栽机... 详细信息

针对目前玉米作业中半自动移栽机需要人工喂苗、工作效率低等缺点以及国外自动移栽机的结构复杂、制造成本高和工作效率低等问题,以高速水稻植质钵育幼苗移栽机的工作原理和特点为理论基础,设计了一种应用于玉米植质钵育苗全自动移栽机的可夹持式自动栽植机构,并建立了机构的运动学模型和优化数学模型,利用MATLAB进行优化求解。结果表明,优化后机构夹苗的稳定性和机构工作的可靠性有了显著的提高。

关键词：玉米移栽机自动栽植机构夹持机构参数优化

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全自动玉米钵育移栽机发展趋势的研究

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农机化研究 2014年第7期36卷 241-244页

作者：牛钊君张伟付晓明黑龙江八一农垦大学工程学院黑龙江大庆163319

玉米钵育移栽技术是提高玉米单产水平和品质的主要技术措施之一。国内玉米移栽生产机械化程度低,多为半自动,作业速度受限于人工取苗,喂苗速度、移栽质量不稳定,直接限制了这项技术的推广和应用。国外大多数全自动移栽机由于结构复杂、... 详细信息

玉米钵育移栽技术是提高玉米单产水平和品质的主要技术措施之一。国内玉米移栽生产机械化程度低,多为半自动,作业速度受限于人工取苗,喂苗速度、移栽质量不稳定,直接限制了这项技术的推广和应用。国外大多数全自动移栽机由于结构复杂、造价过高,以及国内外地理条件差异等因素影响导致无法应用。为此,通过分析国外移栽机的发展趋势,总结国内半自动移栽机供苗方式的不足,结合高速水稻插秧机进给机构特点,提出国内旱地移栽机供苗机构应向基于多穴连钵、全自动的高等机械化趋势发展。

关键词：玉米钵育全自动移栽机趋势

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3ZSP-2型甘蔗中耕施肥培土机刮板式排肥装置参数优化

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农业工程学报 2016年第23期32卷 36-42页

作者：李明张婷董学虎汪春牛钊君葛畅韦丽娇黑龙江八一农垦大学工程学院大庆163319 中国热带农业科学院农业机械研究所湛江524091

为提高3ZSP-2型甘蔗中耕施肥培土机的排肥均匀度和稳定性,通过单因素及中心组合试验研究了其结构和性能参数对排肥均匀度的影响。以前进速度、刮板宽度和刮板角度为主要影响因素,采用Box-Behnken中心组合试验设计方法,建立了3ZSP-2型甘... 详细信息

为提高3ZSP-2型甘蔗中耕施肥培土机的排肥均匀度和稳定性,通过单因素及中心组合试验研究了其结构和性能参数对排肥均匀度的影响。以前进速度、刮板宽度和刮板角度为主要影响因素,采用Box-Behnken中心组合试验设计方法,建立了3ZSP-2型甘蔗中耕施肥培土机排肥均匀度的数学模型,通过回归统计方差、响应面和等高线分析了各机构参数对排肥均匀度的影响规律。结果表明：在刮板宽度30-50 mm,刮板角度15°-19°,前进速度为0.7-1.1 m/s试验参数范围内,各因素对排肥均匀度影响程度从高到低依次为刮板宽度、刮板角度、前进速度,排肥均匀度随各因素参数的增加呈先增大后减小的趋势。当刮板宽度为48.4 mm、刮板角度为16.5°、前进速度为1.09 m/s的参数条件下,施肥均匀度由原来的90.1%提高到92.97%,排肥稳定性提高,开沟深度稳定性达92.9%,肥料覆盖率达100%。研究结果为3ZSP-2型甘蔗中耕施肥培土机的设计和改进提供了理论依据。

关键词：农业机械优化机械化甘蔗中耕施肥排肥均匀度刮板宽度刮板角度

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Enhanced catalytic oxidation of 2,4-dichlorophenol via singlet oxygen dominated peroxymonosulfate activation on CoOOH@Bi_(2)O_(3)composite

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Frontiers of Environmental Science & Engineering 2021年第4期15卷 109-119页

作者： Tianhao Xi Xiaodan Li Qihui Zhang Ning Liu Shu niu zhaojun Dong Cong Lyu Key Laboratory of Groundwater Resources and Environment Ministry of EducationJilin UniversityChangchun130026China Jilin Provincial Key Laboratory of Water Resources and Environment Jilin UniversityChangchun130026China China Northeast Municipal Engineering Design and Research Institute Co.Ltd. Changchun130021China

Cobalt oxyhydroxide(CoOOH)has been turned out to be a high-efficiency catalyst for peroxymonosulfate(PMS)*** this study,CoOOH was loaded on bismuth oxide(Bi_(2)O_(3))using a facile chemical precipitation process to improve its catalytic activity and *** result showed that the catalytic performance on the 2,4-dichlorophenol(2,4-DCP)degradation was significantly enhanced with only 11 wt%Bi_(2)O_(3)*** degradation rate in the CoOOH@Bi_(2)O_(3)/PMS system(0.2011 min−1)was nearly 6.0 times higher than that in the CoOOH/PMS system(0.0337 min−1).Furthermore,CoOOH@Bi_(2)O_(3)displayed better stability with less Co ions leaching(16.4%lower than CoOOH)in the PMS *** phenomena were attributed to the Bi_(2)O_(3)loading which significantly increased the conductivity and specific surface area of the CoOOH@Bi_(2)O_(3)*** electron transfer facilitated the redox reaction of Co(III)/Co(II)and thus was more favorable for reactive oxygen species(ROS)***,larger specific surface area furnished more active sites for PMS *** importantly,there were both non-radical(^(1)O_(2))and radicals(SO_(4)^(−)•,O_(2)^(−)•,and OH•)in the CoOOH@Bi_(2)O_(3)/PMS system and^(1)O_(2)was the dominant *** general,this study provided a simple and practical strategy to enhance the catalytic activity and stability of cobalt oxyhydroxide in the PMS system.

关键词： Cobalt oxyhydroxide Bismuth oxide Peroxymonosulfate 2,4-dichlorophenol Singlet oxygen Electron transfer

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甘蔗健康种苗机械化种植技术发展趋势分析

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中国热带农业 2022年第3期 23-28页

作者：牛钊君李明刘信鹏韦丽娇葛畅侯明鑫李孟洪中国热带农业科学院农业机械研究所广东湛江524091 农业农村部热带作物农业装备重点实验室广东湛江524091 中国热带农业科学院南亚热带作物研究所广东湛江524091 广东海洋大学机械与动力工程学院广东湛江524091 广西双高农业机械有限公司广西南宁530104 湛江市凯翔科技有限公司广东湛江524091

甘蔗健康种苗种植技术是延长宿根年限、降低生产成本的有效措施,该技术具有品种提纯复壮、提高含糖量和产量、节约种植蔗种的优势。但该技术需要较多依赖机械才能更经济更有效地实施,而目前国内外均无成熟的专用机械装备,导致这一技术... 详细信息

甘蔗健康种苗种植技术是延长宿根年限、降低生产成本的有效措施,该技术具有品种提纯复壮、提高含糖量和产量、节约种植蔗种的优势。但该技术需要较多依赖机械才能更经济更有效地实施,而目前国内外均无成熟的专用机械装备,导致这一技术仍然难以大面积推广应用。通过分析国外甘蔗种植机发展趋势,总结国内机械化种植技术上的不足,提出甘蔗健康种苗种植机应向全自动、智能化、关键部件装配模块化、高质量低成本的趋势发展。

关键词：甘蔗健康种苗全自动智能化发展趋势

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