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5TZ-900型振动筛清选脱粒机设计与试验

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中国农机化学报 2024年第7期45卷 104-113页

作者：陈文辉张中锋汪振荣高自成何舟顾秀艳张掖市农业机械化技术推广站甘肃张掖734000 甘肃省农业机械化技术推广总站兰州市730046 张掖市科技服务中心甘肃张掖734000

针对甘肃省山区梯田等中小地块联合收获机作业困难,小麦、燕麦等粮食作物主要在农户庭院进行脱粒作业的需求现状,设计集喂入、脱粒、清选和排草等作业功能于一体的5TZ-900型振动筛清选脱粒机。对机具的脱粒装置、清选装置、传动装置等... 详细信息

针对甘肃省山区梯田等中小地块联合收获机作业困难,小麦、燕麦等粮食作物主要在农户庭院进行脱粒作业的需求现状,设计集喂入、脱粒、清选和排草等作业功能于一体的5TZ-900型振动筛清选脱粒机。对机具的脱粒装置、清选装置、传动装置等关键部件进行理论分析和结构设计,对满足工作需求的脱粒滚筒规格尺寸、钉齿数量和振动筛结构尺寸等进行计算分析,确定影响振动筛清选脱粒机作业合格率的主要技术参数,并对整机进行作业性能试验。试验结果表明,机具空载运转时的噪声为79.8 dB(A),在试验作物的草谷比为0.9、籽粒含水率在15%~20%和机具滚筒转速为1 040 r/min时,机具作业的破碎率为0.94%,含杂率为1.04%,未脱净率为0.93%,总损失率为1.36%,生产效率为1 120 kg/h,各项指标达到设计要求和相关标准要求。

关键词：脱粒机振动筛清选脱粒脱净率含杂率

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影响制种玉米机械化去雄的农艺因子

中国农机化学报 2024年第9期45卷 15-20页

作者：王林孔东升王靓敏顾秀艳杨龙温玉雷甘肃省张掖市农业机械化技术推广站甘肃张掖734000 河西学院甘肃张掖734000 西安理工大学经管学院西安市710048 甘州区农业机械化技术推广站甘肃张掖734000

研究不同农艺因子对制种玉米机械化去雄的影响,为制种玉米生产标准化和全面推进制种玉米机械化去雄技术提供技术依据。选取4个代表性品种原种,根据农艺要求和种植模式,每个品种设置1个种植区,每个种植区分设不同种子分级处理、不同播种... 详细信息

研究不同农艺因子对制种玉米机械化去雄的影响,为制种玉米生产标准化和全面推进制种玉米机械化去雄技术提供技术依据。选取4个代表性品种原种,根据农艺要求和种植模式,每个品种设置1个种植区,每个种植区分设不同种子分级处理、不同播种时间、不同播种方式、不同种植模式、不同去雄机械和去雄模式的对照重复,测定制种玉米长势整齐度和机械化去雄效果。制种玉米机械化去雄效果与种子分级、播种期、播种方式、种植模式、去雄机械和去雄模式相关,种子分级处理后种植机械化取净率(85%以上)显著高于混合种机械化取净率(48%);中晚期播种机械化取净率比早期播种机械化取净率高5个百分点;联合精量播种机播种比人工点播机械化去雄取净率高10个百分点以上;等行距种植模式取净率比宽窄行种植模式取净率高4个百分点;采用卫星导航智能驾驶系统控制农机作业,作业精度高,直线性好,有利于后续农机化作业。因此,在实际生产中要根据土壤条件选择合适的耕整地方式和机具,精选种子并对其进行分级处理和分级种植,适当推迟播种期,提高播种质量,采取等行距种植,并根据作物长势和种植规模选择合适去雄作业机械和去雄模式,可有效提高机械化去雄取净率。

关键词：制种玉米机械化去雄农艺因子平均株高整齐度取净率

Review of tensairity and its applications in agricultural aviation

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International Journal of Agricultural and Biological Engineering 2016年第3期9卷 1-14页

作者： Zang Ying gu xiuyan Zhou Zhiyan Luo Xiwen Zang Yu Qi Xingyuan Liu Wulan Yang Cheng College of Engineering South China Agricultural University/Engineering Research Center for Agricultural Aviation Application(ERCAAA)Guangzhou 510642China Collaborative Innovation Center for Grain and Oil Crops in South China Changsha 410128China

In recent years,the unmanned aerial vehicle(UAV)has undergone rapid development in field of agricultural plant protection;however,the payload and max-endurance are bottlenecks that limit its further *** is a new structure consisting of a bag filled with low-pressure gas,an upper rigid rod and a lower flexible *** puts tension pressure on the whole structure through internal gas pressure,provides continuous support to the upper rigid rod,and that is to say,the tensairity improves the stability of the structure in some *** also,tensairity is a self-supporting and self-balancing system,which means it is a simple,lightweight structure with small storage volume,strong bearing capacity,and low engineering *** also has the advantages of gasbag and BSS(beam string structure).The main objective of this research was to introduce the theoretical basis of tensairity and then discussed its development and ***,the advantages and disadvantages of tensairity were summarized,and development prospects of tensairity in agricultural aviation were *** last,it can be concluded that tensairity has potentials in agricultural *** tensairity is applied in agricultural UAVs,it will solve the two major problems of payload and max-endurance better,and help promoting the development of agricultural aviation technology in agricultural aviation administration and ***,it will help with meeting the aerial application requirements of high efficiency and maximal environmental *** research will provide a reference for improving working efficiency and economic benefits of UAVs in agricultural plant protection.

关键词： tensairity agricultural aviation unmanned aerial vehicle(UAV) bionics numerical simulation payload

Design and anti-sway performance testing of pesticide tanks in spraying UAVs

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International Journal of Agricultural and Biological Engineering 2019年第1期12卷 10-16页

作者： Yu Zang Ying Zang Zhiyan Zhou xiuyan gu Rui Jiang Lingxi Kong Xingang He Xiwen Luo Yubin Lan College of Engineering South China Agricultural University/Guangdong Engineering Research Center for Agricultural Aviation Application(ERCAAA)Guangzhou 510642China National Joint Research Center for Precision Agricultural Aviation Application Technology Guangzhou 510642China Key Laboratory of Key Technology on Agricultural Machine and Equipment(South China Agricultural University) Ministry of EducationGuangzhou 510642China

Anti-sway performance is one of the most important factors that affect the stability of unmanned aerial vehicles(UAVs).In this study,an anti-sway performance testing method and an evaluation formula for pesticide tanks were developed,which could facilitate the design and application of pesticide *** detection device mainly comprises a testing stand,a mounting and testing part,and a driving and control *** the testing method,P(maximum pressure)measured by a barometer and t(fluctuation recovery time)measured by a high-speed camera were used as evaluation *** the aim to determine the optimal position of the pressure detection device and the optimal filling ratio,four representative pesticide tanks were involved in this *** results showed that the optimal position of the pressure detection device was at the middle position on the tank wall,halfway up from the bottom,and the optimal filling ratio was *** P and t as evaluation indexes,a comprehensive evaluation formula was developed based on these tests:S=0.7Pi+***-sway performance of pesticide tanks was evaluated by a comprehensive score.A disk pesticide tank with a baffle was determined to be the best among the four types of pesticide tanks,showing a score of *** scores of the other three pesticide tanks were 0.500,0.428 and 0.612,*** results indicated that the baffle structure in the pesticide tank and the radian design of the tank wall can effectively improve the anti-sway performance of a pesticide *** proposed detection device and test method are simpler and more intuitive compared to other approaches in evaluating the anti-sway performance of pesticide tanks in spraying UAVs,and they can be used as a reference to guide the design of pesticide tanks and the stability evaluation of spraying UAVs.

关键词： spraying UAV pesticide tank liquid sloshing anti-sway performance test detection method

Optimization of variables for maximizing efficacy and efficiency in aerial spray application to cotton using unmanned aerial systems

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International Journal of Agricultural and Biological Engineering 2019年第2期12卷 10-17页

作者： Juan Liao Ying Zang Xiwen Luo Zhiyan Zhou Yubin Lan Yu Zang xiuyan gu Weiming Xu Andrew John Hewitt College of Engineering South China Agricultural UniversityGuangzhou 510642China Key Laboratory of Key Technology on Agricultural Machine and Equipment(South China Agricultural University) Ministry of EducationGuangzhou 510642China National Joint Research Center for Precision Agricultural Aviation Application Technology Guangzhou 510642China The University of Queensland GattonQueensland 4343Australia guizhou University Guiyang 550025China

Aerial spraying can support efficient defoliation without crop *** the recent introduction to unmanned aerial system(UAS)for aerial spraying in China,there is a need to determine the optimum application variables to achieve high efficacy and efficiency with low *** present research involved field studies across two annual cotton production seasons in North Xinjiang,*** factors,including volume rate(A),tank mix including spray adjuvants(B),flight altitude(C),flight speed(D)and three levels of L9(3^(4))orthogonal arrays were carried out to optimize the application parameters for three types of *** included different numbers of rotors as follows:four-rotors,six-rotors and *** coverage,distribution uniformity(coefficient of variation(CV)of droplet coverage),rates of cotton defoliation and boll opening,application efficiency and cost were measured and *** showed that:(1)the rates of defoliation and boll opening by aerial cotton defoliant application could meet the requirement of cotton mechanized harvesting;(2)the optimal scenario for the three UASs was A_(3)B_(2)C_(1)D_(3),Volume rate(A3):48 L/hm^(2);Tank mix and concentration(B_(2)):(Tuotulong 225+Sujie 750+Ethephon 2250)mL/hm^(2),Flight altitude(C_(1)):1.5 m,and Flight speeds(D_(3))for unmanned helicopters with four-rotors,six-rotors and eight-rotors were 3.12 m/s,2.51 m/s and 3.76 m/s,*** results can provide guidance for cotton defoliant aerial spraying in China using UAS.

关键词： unmanned aerial system(UAS) unmanned aerial vehicle(UAV) unmanned electric helicopter(UEH) cotton defoliant aerial spraying parameter optimization

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Web使用模式挖掘的研究

计算机工程与应用 2005年第16期41卷 175-178页

作者：谷秀岩山东轻工业学院金融职业学院济南250100

Web挖掘是传统数据挖掘技术在Web环境下的应用,Web挖掘分为Web内容挖掘、Web结构挖掘和Web使用模式挖掘。Web使用模式挖掘是从用户浏览网站的数据中抽取感兴趣的模式,理解用户的浏览兴趣行为,以便进一步改善网站结构或为用户提供个性化... 详细信息

Web挖掘是传统数据挖掘技术在Web环境下的应用,Web挖掘分为Web内容挖掘、Web结构挖掘和Web使用模式挖掘。Web使用模式挖掘是从用户浏览网站的数据中抽取感兴趣的模式,理解用户的浏览兴趣行为,以便进一步改善网站结构或为用户提供个性化的服务。文章主要论述了Web使用模式挖掘。

关键词： Web挖掘 Web使用模式挖掘浏览兴趣个性化服务

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发射光谱法同时测定地球化学样品中银锡铅

吉林地质 2023年第4期42卷 50-55页

作者：谷秀艳吉林省第四地质调查所吉林通化134000

发射光谱法同时测定地球化学样品中Ag、Sn、Pb元素,具有操作便利、分析快速、定量准确等优点。同时也存在诸多导致测试结果不稳定的因素,本文通过选择适宜的分析线波长、球磨仪研磨样品的适宜重量、实验样品与缓冲剂的最佳混合比例进行... 详细信息

发射光谱法同时测定地球化学样品中Ag、Sn、Pb元素,具有操作便利、分析快速、定量准确等优点。同时也存在诸多导致测试结果不稳定的因素,本文通过选择适宜的分析线波长、球磨仪研磨样品的适宜重量、实验样品与缓冲剂的最佳混合比例进行实验讨论,最终选择出最佳试验条件供参考。

关键词：发射光谱法 Ag、Sn、Pb元素波长重量范围样品与缓冲剂质量比例

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水稻气力式排种器分层充种室设计与试验

农业工程学报 2015年第4期31卷 42-48页

作者：邢赫臧英王在满罗锡文张国忠曹晓曼谷秀艳华南农业大学南方农业机械与装备关键技术教育部重点实验室广州510642 华中农业大学工学院武汉430070

为改善水稻种子在充种室内的流动性并提高水稻气力式精量穴播排种器的排种精度,实现超级杂交稻（1-3）粒/穴精量穴播要求,在水稻气力式精量穴播排种器与种箱间设计了一种分层充种室。以含水率为20.3%（湿基）＂培杂泰丰＂超级杂交稻种... 详细信息

为改善水稻种子在充种室内的流动性并提高水稻气力式精量穴播排种器的排种精度,实现超级杂交稻（1-3）粒/穴精量穴播要求,在水稻气力式精量穴播排种器与种箱间设计了一种分层充种室。以含水率为20.3%（湿基）＂培杂泰丰＂超级杂交稻种子为对象,采用单因素试验和正交试验的方法,研究了不同吸室负压、吹种正压下,分层充种室对排种器排种性能的影响。试验结果表明,在吸种盘转速为30 r/min、吸室负压为1.6 k Pa、送种正压为0.1 k Pa、采用分层充种室的条件下,该排种器排出（1-3）粒/穴种子的概率为95.4%,空穴率为1.53%,大于4粒/穴的概率为3.07%,其中排出1粒/穴种子的概率为17.32%,2粒/穴种子的概率为58.72%,3粒/穴种子的概率为19.36%;与前期开展的水稻气力式精量穴播排种器排种性能试验结果相比较,增设分层充种室后,排种器播种精度提高。该研究表明,减小排种器中水稻种子之间的挤压力和摩擦力,改善种子的流动性,从而使吸种盘上吸孔对种子的吸附能力增强,是提高水稻气力式精量穴播排种器的性能的重要途径。该文为水稻气力式排种器结构优化与性能提升研究提供了重要参考。

关键词：农业机械种子气力式设备群布吸孔精量穴播分层充种室

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稻田气力式变量施肥机关键部件的设计与试验

农业工程学报 2016年第6期32卷 20-26,F0004页

作者：齐兴源周志艳杨程罗锡文谷秀艳臧禹刘武兰华南农业大学工程学院/广东省农业航空应用工程技术研究中心广州510642 南方粮油作物协同创新中心长沙410128

目前在水稻的机械追肥作业中以离心圆盘式撒肥机为主,该方式在作业幅宽方向上的撒施均匀性不稳定,且难以实现作业幅宽方向上的变量施肥。为了满足水稻变量追肥作业的需要,达到化肥减施增收的目的,设计了一种外槽轮式排肥、以空气流为肥... 详细信息

目前在水稻的机械追肥作业中以离心圆盘式撒肥机为主,该方式在作业幅宽方向上的撒施均匀性不稳定,且难以实现作业幅宽方向上的变量施肥。为了满足水稻变量追肥作业的需要,达到化肥减施增收的目的,设计了一种外槽轮式排肥、以空气流为肥料输送和撒播动力的稻田气力式变量施肥机。文章对该机器的关键部件进行了仿真和测试试验,研究了排肥轮转速与排肥量之间的相关关系,并对排肥管道长度对排肥出口风速与排肥滞后时间的影响、排肥管出口相对高差对排肥滞后时间的影响进行了试验。试验结果表明：排肥轮转速与排肥量之间存在极显著的线性相关关系,相关系数R2=0.998,调节排肥轮转速可以较精确的调节施肥量的大小,在变量作业时,结合施肥量的需求及施肥机具的前进速度,对排肥轮的转速进行实时调节,从而达到变量施肥的目的。当机具前进速度为1 m/s,排肥轮转速在10～40 r/min之间变化时,单凭转速调节可实现每公顷施肥量在40～200 kg范围内的变量调节,此外,各排肥口的排肥量误差小于±5%,基本上达到了施肥均匀性的要求。文章还研究了排肥管道长度及安装高差对排肥滞后时间的影响,结果表明：排肥管道长度对排肥出口风速有显著影响,排肥管长度和出口安装的高差对排肥滞后性亦有显著的影响,因此,为了尽可能减小因排肥滞后对排肥均匀性的影响,应避免排肥管过长,并尽量使排肥管出口不高于入口。该研究为进一步的样机制造和优化提供了依据。

关键词：作物农业机械设计稻田气力式变量施肥外槽轮排肥肥料输送