蔬菜穴盘育苗底部气吹式钵体松脱装置设计
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摘要
针对蔬菜穴盘苗直接拔苗费力又损伤大的问题,设计了一种有助于穴盘苗移栽的气吹式钵体松脱装置。利用直线模组移位单元和双联气缸升降单元组合成输送系统,驱动气嘴排从穴盘底部的穴孔排水口逐排顶吹穴盘苗钵体,实现穴盘苗钵体与穴孔壁之间非机械接触式放松,利于移栽时人工轻松拔苗或机械快速夹取。对关键部件进行设计,使用排气孔直径为5mm的气嘴,能确保气体射流从128穴孔排水口有效顶吹穴盘苗钵体而不顶盘,根据亚声速自由气体射流动力学原理计算表明:当气嘴口空气射流压力大于0.098 MPa,不超过0.235 MPa时,所设计的气嘴能将穴盘苗吹松而不破坏苗钵根土结构。开展气力顶钵松脱多因素试验研究,结果表明气流喷射压力高度显著影响苗钵完整率,钵体含水率对完整率影响显著,其他苗龄、气流回路流量、气嘴头有无海绵密封等试验因素没有统计学显著性影响。当气嘴回路中气流喷射压力控制为0.2 MPa,钵体含水率为55%～60%,黄瓜苗龄为25 d,气流回路全开,气嘴没有海绵头铺垫时,对穴盘苗顶吹作用达到既能将穴盘苗钵体顶松脱离穴孔壁粘附,又最大程度保证钵体完整度的效果。开展验证性试验,苗钵气力松脱完整率达到96%以上,完成整盘苗放松约48s,满足实际需要。该研究可为开发省力的穴盘苗钵放松装置和边松脱边取苗的高效无损自动取苗机构提供参考。
For transplanting vegetables plug seedlings, it is difficult to directly pick up seedlings from the tray cells. Damages of root lumps of plug seedling happen all the time in extracting. In this paper, a root lump loosening mechanism using air jets to eject vegetable plug seedlings making for transplanting was designed and evaluated. It consisted of air jets, a linear module, a double-rod cylinder, a control system and some other supporting parts. The step transmission of the air jet along the horizontal direction was performed using the linear module, which was a synchronous belt system. The air jet′ motion along the vertical direction up and down for ejecting plug seedlings was moved by the double-rod cylinder. For high blowing rates, wholes rows of air jets aiming for each drain hole was designed. In this arrangement, the seedlings could be loosened row by row. With a row of air jets blowing the seedling plugs from the drain holes of the tray cells, air pressures along with the force of the plungers effectively loosened seedlings. It would be good for manual pulling seedlings or automatically picking up seedlings from the tray cells. Based on the integrated design and analysis, the air pressure range of succeeding in loosening seedling plugs was 0.098-0.235 MPa using the air jet at the diameter of 5 mm. Under this condition, the seedlings appeared to be most effective in the loosening and not in destroy of the root soil. Meanwhile, the air jet could eject each drain hole at the bottom of the 128-cell tray. Being the first prototype, its optimal machine parameters were examined under various conditions. In the optimum tests, it was found that the air pressure of the air jet plungers exerted the greatest effect on the integrated ratio in loosening seedling plugs, and followed by the moisture content. Other factors such as the seedling age, the air flow rate and the air jet with sponges or not had no significant effects on the integrated ratio in loosening seedling plugs. In reality, it would probably be a moderate air blast for blowing of the plug seedlings from the tray. If the moisture content of root lumps of the plug seedlings was less than 55%, the cohesion forces between the roots and the tray cell walls would increase. In this case, wetting the roots might serve to reduce the adhesion making for blowing. For cucumbers seedlings, when the air pressure of the air jet plungers was 0.2 MPa, the root zone moisture was 55%-60%, the seedling age was 25 d, the airflow circuit was fully open at the outlet of 4 mm, and the air jet had no sponges, the best intact rate succeeding in loosening root lumps of plug seedlings was achieved. Finally, the overall loosening performance test was carried out. The intact rate of seedling and root lump in loosening root lumps by blowing was more than 96%. It needed about 48 s for finishing loosening the whole tray of plug seedling. The loosening mechanism using air jets to eject vegetable plug seedlings has a good performance, which can meet the actual requirements.
For transplanting vegetables plug seedlings, it is difficult to directly pick up seedlings from the tray cells. Damages of root lumps of plug seedling happen all the time in extracting. In this paper, a root lump loosening mechanism using air jets to eject vegetable plug seedlings making for transplanting was designed and evaluated. It consisted of air jets, a linear module, a double-rod cylinder, a control system and some other supporting parts. The step transmission of the air jet along the horizontal direction was performed using the linear module, which was a synchronous belt system. The air jet′ motion along the vertical direction up and down for ejecting plug seedlings was moved by the double-rod cylinder. For high blowing rates, wholes rows of air jets aiming for each drain hole was designed. In this arrangement, the seedlings could be loosened row by row. With a row of air jets blowing the seedling plugs from the drain holes of the tray cells, air pressures along with the force of the plungers effectively loosened seedlings. It would be good for manual pulling seedlings or automatically picking up seedlings from the tray cells. Based on the integrated design and analysis, the air pressure range of succeeding in loosening seedling plugs was 0.098-0.235 MPa using the air jet at the diameter of 5 mm. Under this condition, the seedlings appeared to be most effective in the loosening and not in destroy of the root soil. Meanwhile, the air jet could eject each drain hole at the bottom of the 128-cell tray. Being the first prototype, its optimal machine parameters were examined under various conditions. In the optimum tests, it was found that the air pressure of the air jet plungers exerted the greatest effect on the integrated ratio in loosening seedling plugs, and followed by the moisture content. Other factors such as the seedling age, the air flow rate and the air jet with sponges or not had no significant effects on the integrated ratio in loosening seedling plugs. In reality, it would probably be a moderate air blast for blowing of the plug seedlings from the tray. If the moisture content of root lumps of the plug seedlings was less than 55%, the cohesion forces between the roots and the tray cell walls would increase. In this case, wetting the roots might serve to reduce the adhesion making for blowing. For cucumbers seedlings, when the air pressure of the air jet plungers was 0.2 MPa, the root zone moisture was 55%-60%, the seedling age was 25 d, the airflow circuit was fully open at the outlet of 4 mm, and the air jet had no sponges, the best intact rate succeeding in loosening root lumps of plug seedlings was achieved. Finally, the overall loosening performance test was carried out. The intact rate of seedling and root lump in loosening root lumps by blowing was more than 96%. It needed about 48 s for finishing loosening the whole tray of plug seedling. The loosening mechanism using air jets to eject vegetable plug seedlings has a good performance, which can meet the actual requirements.
引文
[1]全国蔬菜产业发展规划(2011-2020年)[EB/OL].[2018-07-11].Available at:.
[2]叶秉良,俞高红,陈志威,等.偏心齿轮-非圆齿轮行星系取苗机构的运动学建模与参数优化[J].农业工程学报,2011,27(12):7-12.Ye Bingliang,Yu Gaohong,Chen Zhiwei,et al.Kinematics modeling and parameters optimization of seedling pick-up mechanism of planetary gear train with eccentric gear and non-circular gear[J].Transactions of the Chinese Society for Agricultural Engineering(Transactions of the CSAE),2011,27(12):7-12.(in Chinese with English abstract)
[3]崔巍,方宪法,赵亮,等.齿轮-五杆取苗装置机构优化与试验验证[J].农业机械学报,2013,44(8):74-77.Cui Wei,Fang Xianfa,Zhao Liang,et al.Structural optimization and experimental verification of geared five-bar linkage seedling pick up device[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(8):74-77.(in Chinese with English abstract)
[4]严宵月,胡建平,吴福华,等.整排取苗间隔放苗移栽机设计与试验[J].农业机械学报,2013,44(增刊1):7-13.Yan Xiaoyue,Hu Jianping,Wu Fuhua,et al.Design and experiment of full-row-pick-up and single-dropping seedling transplanter[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(Supp.1):7-13.(in Chinese with English abstract)
[5]韩长杰,杨宛章,张学军,等.穴盘苗移栽机自动取喂系统的设计与试验[J].农业工程学报,2013,29(8):51-61.Han Changjie,Yang Wanzhang,Zhang Xuejun,et al.Design and test of automatic feed system for tray seedlings transplanter[J].Transactions of the Chinese Society for Agricultural Engineering(Transactions of the CSAE),2013,29(8):51-61.(in Chinese with English abstract)
[6]韩绿化,毛罕平,严蕾,等.穴盘育苗移栽机两指四针钳夹式取苗末端执行器[J].农业机械学报,2015,46(7):23-30.Han Lühua,Mao Hanping,Yan Lei,et al.Pincette-type end-effector using two fingers and four pins for picking up seedlings[J].Transactions of the Chinese Society for Agricultural Machinery,2015,46(7):23-30.(in Chinese with English abstract)
[7]童俊华,蒋焕煜,蒋卓华,等.钵苗自动移栽机器人抓取指针夹持苗坨参数优化试验[J].农业工程学报,2014,30(16):8-16.Tong Junhua,Jiang Huanyu,Jiang Zhuohua,et al.Experiment on parameter optimization of gripper needles clamping seedling plug for automatic transplanter[J].Transactions of the Chinese Society for Agricultural Engineering(Transactions of the CSAE),2014,30(16):8-16.(in Chinese with English abstract)
[8]王蒙蒙,宋建农,刘彩玲,等.蔬菜移栽机曲柄摆杆式夹苗机构的设计与试验[J].农业工程学报,2015,31(14):49-57.Wang Mengmeng,Song Jiannong,Liu Cailing,et al.Design and experiment of crank rocker type clamp seedlings mechanism of vegetable transplanter[J].Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE),2015,31(14):49-57.(in Chinese with English abstract)
[9]倪有亮,金诚谦,刘基.全自动移栽机取送苗系统的设计与试验[J].农业工程学报,2015,31(23):10-19.Ni Youliang,Jin Chengqian,Liu Ji.Design and experiment of system for picking up and delivering seedlings in automatic transplanter[J].Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE),2015,31(23):10-19.(in Chinese with English abstract)
[10]李华,曹卫彬,李树峰,等.2ZXM-2型全自动蔬菜穴盘苗铺膜移栽机的研制[J].农业工程学报,2017,33(15):23-33.Li Hua,Cao Weibin,Li Shufeng,et al.Development of2ZXM-2 automatic plastic film mulching plug seedling transplanter for vegetable[J].Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE),2017,33(15):23-33.(in Chinese with English abstract)
[11]王永维,何焯亮,王俊,等.旱地蔬菜钵苗自动移栽机栽植性能试验[J].农业工程学报,2018,34(3):19-25.Wang Yongwei,He Zhuoliang,Wang Jun,et al.Experiment on transplanting performance of automatic vegetable pot seedling transplanter for dry land[J].Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE),2018,34(3):19-25.(in Chinese with English abstract)
[12]刘姣娣,曹卫彬,田东洋,等.基于苗钵力学特性的自动移栽机执行机构参数优化试验[J].农业工程学报,2016,32(16):3217-3239.Liu Jiaodi,Cao Weibin,Tian Dongyang,et al.Optimization experiment of transplanting actuator parameters based on mechanical property of seedling pot[J].Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE),2016,32(16):3217-3239.(in Chinese with English abstract)
[13]Yang Y,Ting K C,Giacomelli G A.Factors affecting performance of sliding-needles gripper during robotic transplanting of seedlings[J].Transactions of the ASAE,1991,7(4):493-498.
[14]胡静,韩绿化,温贻芳,等.与自动移栽相关的不同蔬菜穴盘苗力学特性[J].农机化研究,2018,5(5):132-136.Hu Jing,Han Luhua,Wen Yifang,et al.Mechanical properties of different vegetable plug seedlings as related to automatic transplanting[J].Journal of Agricultural Mechanization Research,2018,5(5):132-136.(in Chinese with English abstract)
[15]FERRARI FUTURA automated transplanter[EB/OL].[2018-06-30].Available at:https://ferraricostruzioni.com/en/tray-planters/8-futura-automated-transplanter.html
[16]颜华,郭钰辉,陈科,等.一种全自动取苗投苗装置及其取苗投苗方法:201510920682.2[P].2015-12-11.
[17]张振国,张宁宁,吕全贵,等.顶夹组合式全自动移栽机的设计研究[J].新疆农机化,2016(6):16-18,45.Zhang Zhenguo,Zhang Ningning,LüQuangui,et al.Design and research on the automatic transplanting machine of the top pinch combined type plug seedling[J].Xinjiang Agricultural Mechanization,2016(6):16-18,45.(in Chinese with English abstract)
[18]王东洋,金鑫,姬江涛,等.自动顶-夹式蔬菜穴盘苗取苗装置设计与试验[J].农机化研究,2016,10(10):64-68.Wang Dongyang,Jin Xin,Ji Jiangtao,et al.Design and experiment of fully automatic ejection and picking-up seedlings mechanism of transplanter[J].Journal of Agricultural Mechanization Research,2016,10(10):64-68.(in Chinese with English abstract)
[19]高国华,王凯,孙晓娜.嫁接机钢针顶起穴盘苗过程EDEM模拟验证及参数优化[J].农业工程学报,2017,33(21):29-35.Gao Guohua,Wang Kai,Sun Xiaona.Verification for EDEMsimulation of process of jacking tray-seedling by steel needle in grafting machine and parameter optimization[J].Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE),2017,33(21):29-35.(in Chinese with English abstract)
[20]Shaw L H.Removing and handing modular vegetable seedlings from nursery trays[J].Proceedings of the Florida State Horticultural Society,1999,112:153-155.
[21]向卫兵,罗锡文,王玉兴,等.气力有序抛秧气流场的有限元仿真分析与试验[J].农业工程学报,2004,20(1):44-47.Xiang Weibing,Luo Xiwen,Wang Yuxing,et al.Finite element simulation analyses and experiments on rice seedling ordered pneumatic throwing plantation[J].Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE),2004,20(1):44-47.(in Chinese with English abstract)
[22]向卫兵,罗锡文,王玉兴.气力有序抛秧试验[J].农业机械学报,2007,38(7):67-70.Xiang Weibing,Luo Xiwen,Wang Yuxing.Experiments on pneumatic ordered throwing transplantation of paddy seedling[J].Transactions of the Chinese Society for Agricultural Machinery,2007,38(7):67-70.(in Chinese with English abstract)
[23]杨启志,郭林强,钱陆亦,等.一种钵苗移栽机气动成排取苗装置:201510540077.2[P].2015-08-28.
[24]赵承庆,姜毅.气体射流动力学[M].北京:北京理工大学出版社,1998.
[25]任露泉,刘朝宗,佟金,等.土壤粘附系统中粘土颗粒群的粘附特性[J].农业机械学报,1997,28(4):1-4.Ren Luquan,Liu Chaozong,Tong Jin,et al.Adhesive behavior of soil particle aggregates in the soil adhesion system[J].Transactions of the Chinese Society for Agricultural Machinery,1997,28(4):1-4.(in Chinese with English abstract)
[26]张锋,凌贤长,吴李泉,等.植被须根护坡力学效应的三轴试验研究[J].岩石力学与工程学报,2010,29(增刊2):3979-3985.Zhang Feng,Ling Xianchang,Wu Liquan,et al.Triaxial experimental study of mechanical effect of slope protection with vegetation fibril[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(Supp.2):3979-3985.(in Chinese with English abstract)
[27]缪小花,毛罕平,韩绿化,等.黄瓜穴盘苗拉拔力及钵体抗压性能影响因素分析[J].农业机械学报,2013,44(增刊1):27-32.Miao Xiaohua,Mao Hanping,Han Lühua,et al.Analysis of influencing factors on force of picking plug seedlings and pressure resistance of plug seedlings[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(Supp.1):27-32.(in Chinese with English abstract)
[28]Mohsenin N N.Physical Properties of Plant and Animal Materials[M].New York:Gordon and Breach Science,1986.
[29]Nguyen Kim Doang,Ng Teck-Chew,Chen l-Ming.On algorithms for planning S-curve motion profiles[J].International Journal of Advanced Robotic Systems,2008,5(1):99-106.
[2]叶秉良,俞高红,陈志威,等.偏心齿轮-非圆齿轮行星系取苗机构的运动学建模与参数优化[J].农业工程学报,2011,27(12):7-12.Ye Bingliang,Yu Gaohong,Chen Zhiwei,et al.Kinematics modeling and parameters optimization of seedling pick-up mechanism of planetary gear train with eccentric gear and non-circular gear[J].Transactions of the Chinese Society for Agricultural Engineering(Transactions of the CSAE),2011,27(12):7-12.(in Chinese with English abstract)
[3]崔巍,方宪法,赵亮,等.齿轮-五杆取苗装置机构优化与试验验证[J].农业机械学报,2013,44(8):74-77.Cui Wei,Fang Xianfa,Zhao Liang,et al.Structural optimization and experimental verification of geared five-bar linkage seedling pick up device[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(8):74-77.(in Chinese with English abstract)
[4]严宵月,胡建平,吴福华,等.整排取苗间隔放苗移栽机设计与试验[J].农业机械学报,2013,44(增刊1):7-13.Yan Xiaoyue,Hu Jianping,Wu Fuhua,et al.Design and experiment of full-row-pick-up and single-dropping seedling transplanter[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(Supp.1):7-13.(in Chinese with English abstract)
[5]韩长杰,杨宛章,张学军,等.穴盘苗移栽机自动取喂系统的设计与试验[J].农业工程学报,2013,29(8):51-61.Han Changjie,Yang Wanzhang,Zhang Xuejun,et al.Design and test of automatic feed system for tray seedlings transplanter[J].Transactions of the Chinese Society for Agricultural Engineering(Transactions of the CSAE),2013,29(8):51-61.(in Chinese with English abstract)
[6]韩绿化,毛罕平,严蕾,等.穴盘育苗移栽机两指四针钳夹式取苗末端执行器[J].农业机械学报,2015,46(7):23-30.Han Lühua,Mao Hanping,Yan Lei,et al.Pincette-type end-effector using two fingers and four pins for picking up seedlings[J].Transactions of the Chinese Society for Agricultural Machinery,2015,46(7):23-30.(in Chinese with English abstract)
[7]童俊华,蒋焕煜,蒋卓华,等.钵苗自动移栽机器人抓取指针夹持苗坨参数优化试验[J].农业工程学报,2014,30(16):8-16.Tong Junhua,Jiang Huanyu,Jiang Zhuohua,et al.Experiment on parameter optimization of gripper needles clamping seedling plug for automatic transplanter[J].Transactions of the Chinese Society for Agricultural Engineering(Transactions of the CSAE),2014,30(16):8-16.(in Chinese with English abstract)
[8]王蒙蒙,宋建农,刘彩玲,等.蔬菜移栽机曲柄摆杆式夹苗机构的设计与试验[J].农业工程学报,2015,31(14):49-57.Wang Mengmeng,Song Jiannong,Liu Cailing,et al.Design and experiment of crank rocker type clamp seedlings mechanism of vegetable transplanter[J].Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE),2015,31(14):49-57.(in Chinese with English abstract)
[9]倪有亮,金诚谦,刘基.全自动移栽机取送苗系统的设计与试验[J].农业工程学报,2015,31(23):10-19.Ni Youliang,Jin Chengqian,Liu Ji.Design and experiment of system for picking up and delivering seedlings in automatic transplanter[J].Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE),2015,31(23):10-19.(in Chinese with English abstract)
[10]李华,曹卫彬,李树峰,等.2ZXM-2型全自动蔬菜穴盘苗铺膜移栽机的研制[J].农业工程学报,2017,33(15):23-33.Li Hua,Cao Weibin,Li Shufeng,et al.Development of2ZXM-2 automatic plastic film mulching plug seedling transplanter for vegetable[J].Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE),2017,33(15):23-33.(in Chinese with English abstract)
[11]王永维,何焯亮,王俊,等.旱地蔬菜钵苗自动移栽机栽植性能试验[J].农业工程学报,2018,34(3):19-25.Wang Yongwei,He Zhuoliang,Wang Jun,et al.Experiment on transplanting performance of automatic vegetable pot seedling transplanter for dry land[J].Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE),2018,34(3):19-25.(in Chinese with English abstract)
[12]刘姣娣,曹卫彬,田东洋,等.基于苗钵力学特性的自动移栽机执行机构参数优化试验[J].农业工程学报,2016,32(16):3217-3239.Liu Jiaodi,Cao Weibin,Tian Dongyang,et al.Optimization experiment of transplanting actuator parameters based on mechanical property of seedling pot[J].Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE),2016,32(16):3217-3239.(in Chinese with English abstract)
[13]Yang Y,Ting K C,Giacomelli G A.Factors affecting performance of sliding-needles gripper during robotic transplanting of seedlings[J].Transactions of the ASAE,1991,7(4):493-498.
[14]胡静,韩绿化,温贻芳,等.与自动移栽相关的不同蔬菜穴盘苗力学特性[J].农机化研究,2018,5(5):132-136.Hu Jing,Han Luhua,Wen Yifang,et al.Mechanical properties of different vegetable plug seedlings as related to automatic transplanting[J].Journal of Agricultural Mechanization Research,2018,5(5):132-136.(in Chinese with English abstract)
[15]FERRARI FUTURA automated transplanter[EB/OL].[2018-06-30].Available at:https://ferraricostruzioni.com/en/tray-planters/8-futura-automated-transplanter.html
[16]颜华,郭钰辉,陈科,等.一种全自动取苗投苗装置及其取苗投苗方法:201510920682.2[P].2015-12-11.
[17]张振国,张宁宁,吕全贵,等.顶夹组合式全自动移栽机的设计研究[J].新疆农机化,2016(6):16-18,45.Zhang Zhenguo,Zhang Ningning,LüQuangui,et al.Design and research on the automatic transplanting machine of the top pinch combined type plug seedling[J].Xinjiang Agricultural Mechanization,2016(6):16-18,45.(in Chinese with English abstract)
[18]王东洋,金鑫,姬江涛,等.自动顶-夹式蔬菜穴盘苗取苗装置设计与试验[J].农机化研究,2016,10(10):64-68.Wang Dongyang,Jin Xin,Ji Jiangtao,et al.Design and experiment of fully automatic ejection and picking-up seedlings mechanism of transplanter[J].Journal of Agricultural Mechanization Research,2016,10(10):64-68.(in Chinese with English abstract)
[19]高国华,王凯,孙晓娜.嫁接机钢针顶起穴盘苗过程EDEM模拟验证及参数优化[J].农业工程学报,2017,33(21):29-35.Gao Guohua,Wang Kai,Sun Xiaona.Verification for EDEMsimulation of process of jacking tray-seedling by steel needle in grafting machine and parameter optimization[J].Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE),2017,33(21):29-35.(in Chinese with English abstract)
[20]Shaw L H.Removing and handing modular vegetable seedlings from nursery trays[J].Proceedings of the Florida State Horticultural Society,1999,112:153-155.
[21]向卫兵,罗锡文,王玉兴,等.气力有序抛秧气流场的有限元仿真分析与试验[J].农业工程学报,2004,20(1):44-47.Xiang Weibing,Luo Xiwen,Wang Yuxing,et al.Finite element simulation analyses and experiments on rice seedling ordered pneumatic throwing plantation[J].Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE),2004,20(1):44-47.(in Chinese with English abstract)
[22]向卫兵,罗锡文,王玉兴.气力有序抛秧试验[J].农业机械学报,2007,38(7):67-70.Xiang Weibing,Luo Xiwen,Wang Yuxing.Experiments on pneumatic ordered throwing transplantation of paddy seedling[J].Transactions of the Chinese Society for Agricultural Machinery,2007,38(7):67-70.(in Chinese with English abstract)
[23]杨启志,郭林强,钱陆亦,等.一种钵苗移栽机气动成排取苗装置:201510540077.2[P].2015-08-28.
[24]赵承庆,姜毅.气体射流动力学[M].北京:北京理工大学出版社,1998.
[25]任露泉,刘朝宗,佟金,等.土壤粘附系统中粘土颗粒群的粘附特性[J].农业机械学报,1997,28(4):1-4.Ren Luquan,Liu Chaozong,Tong Jin,et al.Adhesive behavior of soil particle aggregates in the soil adhesion system[J].Transactions of the Chinese Society for Agricultural Machinery,1997,28(4):1-4.(in Chinese with English abstract)
[26]张锋,凌贤长,吴李泉,等.植被须根护坡力学效应的三轴试验研究[J].岩石力学与工程学报,2010,29(增刊2):3979-3985.Zhang Feng,Ling Xianchang,Wu Liquan,et al.Triaxial experimental study of mechanical effect of slope protection with vegetation fibril[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(Supp.2):3979-3985.(in Chinese with English abstract)
[27]缪小花,毛罕平,韩绿化,等.黄瓜穴盘苗拉拔力及钵体抗压性能影响因素分析[J].农业机械学报,2013,44(增刊1):27-32.Miao Xiaohua,Mao Hanping,Han Lühua,et al.Analysis of influencing factors on force of picking plug seedlings and pressure resistance of plug seedlings[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(Supp.1):27-32.(in Chinese with English abstract)
[28]Mohsenin N N.Physical Properties of Plant and Animal Materials[M].New York:Gordon and Breach Science,1986.
[29]Nguyen Kim Doang,Ng Teck-Chew,Chen l-Ming.On algorithms for planning S-curve motion profiles[J].International Journal of Advanced Robotic Systems,2008,5(1):99-106.