本文主要研究内容
作者高向瑜（2019）在《果园秸秆覆盖机车载解捆铺料装置设计与试验》一文中研究指出：果树矮化密植栽培技术在我国被广泛的推广,对我国的果园管理技术以及现代化配套农业装备提出了更高的要求,也带来了新的机遇。果园秸秆机械化分层覆盖技术与装备的研发为果园土壤管理提供了一种可持续发展的新模式和新装备,对旱区果园保墒节水、培肥地力、减肥减药、提高果园产量和果品品质具有重要意义。本文对果园秸秆覆盖机进行了试验及性能研究,分析了覆盖机的覆盖性能上存在的问题;针对覆盖机对秸秆等轻质物料装载量小的问题设计了车载解捆铺料装置,并对装置关键部件的结构及参数进行了仿真优化;在此基础上完成了车载解捆铺料装置的试制和对作业性能试验研究。论文的研究内容及取得的主要结论如下:(1)针对果园秸秆覆盖机对秸秆等轻质物料装载量小的问题,提出了双辊轴式车载解捆铺料装置和齿带式车载解捆铺料装置两种技术方案。通过分析论证确定齿带式为设计方案。(2)设计的齿带式车载解捆铺料装置安装在覆盖机车厢后部,其尺寸与车厢宽度和高度匹配倾角调节范围0~20°,主、被动轴辊轴径20cm,选取多层PVC输送带为齿带材料,出料口高度调节范围0~10cm,功率为3.43kW,采用BMP-125摆线液压马达作为动力源。(3)采用EDEM软件对车载解捆铺料装置的关键零部件进行仿真分析,结果表明:三角形拨料刀齿刮拨阻力小,切绳效果好,刮拨量大,且缠料、缠绳风险小,总体效果优于圆柱形齿;以拨料刀齿长度、拨料刀齿横向间距和齿座间距进行单因素仿真试验,结果表明:当拨料刀齿长度在2~6cm范围内增大时,单个拨料刀齿拨料量逐渐增大,拨料量标准差先减后增,阻力逐渐增大;当拨料刀齿横向间距在8~16cm范围内增大时,单个拨料刀齿拨料量逐渐减小,拨料量标准差先减后增;当齿座间距在20~60cm范围内增大时,单个拨料刀齿拨料量逐渐减小,拨料量标准差先减后增。(4)以刀齿长度、刀齿横向间距和齿座间距进行三因素三水平正交仿真试验,结果表明:回归方程极显著,决定系数R~2=0.9986;根据回归模型优化,确定刀齿长度3cm,刀齿横向间距12cm,齿座间距35cm;在该参数组合下,装置铺料量和厚度均匀性满足要求,装置阻力矩适当;根据设计和仿真,完成了车载解捆铺料装置的三维建模及其试制。(5)对车载解捆铺料装置进行了实车单因素试验,结果表明:车速与解捆转速对覆盖宽度的影响较小,覆盖宽度总体略宽于车厢宽度,且秸秆的覆盖宽度表现出良好的宽度均匀性;当车速在0.6~1.4km/h范围内增大时,覆盖机覆盖厚度逐渐减小,覆盖厚度标准差逐渐减小,覆盖厚度在10~19cm之间;当解捆转速在180~280r/min范围内增大时,覆盖机覆盖厚度逐渐增大,覆盖厚度标准差逐渐增大,覆盖厚度在7~18cm之间;实际覆盖效果与仿真覆盖效果接近,说明建立的仿真模型较为可靠,根据仿真对拨料刀齿的设计较为合理。(6)以车速、解捆转速进行了二因素四水平实车正交试验,结果表明:回归方程极显著,决定系数R~2=0.9672,说明车速、解捆转速与秸秆覆盖厚度之间的线性相关性较好;根据验证试验表明:秸秆覆盖厚度计算值与试验实测值之间的决定系数为0.905,表明正交试验建立的秸秆覆盖厚度模型较为合理,可较为准确地描述车速、解捆转速与覆盖厚度之间的关系;根据覆盖厚度模型,覆盖机在对秸秆进行覆盖作业时可实现5.11~18.14cm范围内任意厚度的覆盖。车载解捆铺料装置的研制为农业机械提供了新装备,能使果园秸秆覆盖机的秸秆等轻质物料装载量提高了2.5~3.4倍,提高了覆盖机的工作效率。
Abstract
guo shu ai hua mi zhi zai pei ji shu zai wo guo bei an fan de tui an ,dui wo guo de guo yuan guan li ji shu yi ji xian dai hua pei tao nong ye zhuang bei di chu le geng gao de yao qiu ,ye dai lai le xin de ji yu 。guo yuan jie gan ji xie hua fen ceng fu gai ji shu yu zhuang bei de yan fa wei guo yuan tu rang guan li di gong le yi chong ke chi xu fa zhan de xin mo shi he xin zhuang bei ,dui han ou guo yuan bao shang jie shui 、pei fei de li 、jian fei jian yao 、di gao guo yuan chan liang he guo pin pin zhi ju you chong yao yi yi 。ben wen dui guo yuan jie gan fu gai ji jin hang le shi yan ji xing neng yan jiu ,fen xi le fu gai ji de fu gai xing neng shang cun zai de wen ti ;zhen dui fu gai ji dui jie gan deng qing zhi wu liao zhuang zai liang xiao de wen ti she ji le che zai jie kun pu liao zhuang zhi ,bing dui zhuang zhi guan jian bu jian de jie gou ji can shu jin hang le fang zhen you hua ;zai ci ji chu shang wan cheng le che zai jie kun pu liao zhuang zhi de shi zhi he dui zuo ye xing neng shi yan yan jiu 。lun wen de yan jiu nei rong ji qu de de zhu yao jie lun ru xia :(1)zhen dui guo yuan jie gan fu gai ji dui jie gan deng qing zhi wu liao zhuang zai liang xiao de wen ti ,di chu le shuang gun zhou shi che zai jie kun pu liao zhuang zhi he chi dai shi che zai jie kun pu liao zhuang zhi liang chong ji shu fang an 。tong guo fen xi lun zheng que ding chi dai shi wei she ji fang an 。(2)she ji de chi dai shi che zai jie kun pu liao zhuang zhi an zhuang zai fu gai ji che xiang hou bu ,ji che cun yu che xiang kuan du he gao du pi pei qing jiao diao jie fan wei 0~20°,zhu 、bei dong zhou gun zhou jing 20cm,shua qu duo ceng PVCshu song dai wei chi dai cai liao ,chu liao kou gao du diao jie fan wei 0~10cm,gong lv wei 3.43kW,cai yong BMP-125bai xian ye ya ma da zuo wei dong li yuan 。(3)cai yong EDEMruan jian dui che zai jie kun pu liao zhuang zhi de guan jian ling bu jian jin hang fang zhen fen xi ,jie guo biao ming :san jiao xing bo liao dao chi gua bo zu li xiao ,qie sheng xiao guo hao ,gua bo liang da ,ju chan liao 、chan sheng feng xian xiao ,zong ti xiao guo you yu yuan zhu xing chi ;yi bo liao dao chi chang du 、bo liao dao chi heng xiang jian ju he chi zuo jian ju jin hang chan yin su fang zhen shi yan ,jie guo biao ming :dang bo liao dao chi chang du zai 2~6cmfan wei nei zeng da shi ,chan ge bo liao dao chi bo liao liang zhu jian zeng da ,bo liao liang biao zhun cha xian jian hou zeng ,zu li zhu jian zeng da ;dang bo liao dao chi heng xiang jian ju zai 8~16cmfan wei nei zeng da shi ,chan ge bo liao dao chi bo liao liang zhu jian jian xiao ,bo liao liang biao zhun cha xian jian hou zeng ;dang chi zuo jian ju zai 20~60cmfan wei nei zeng da shi ,chan ge bo liao dao chi bo liao liang zhu jian jian xiao ,bo liao liang biao zhun cha xian jian hou zeng 。(4)yi dao chi chang du 、dao chi heng xiang jian ju he chi zuo jian ju jin hang san yin su san shui ping zheng jiao fang zhen shi yan ,jie guo biao ming :hui gui fang cheng ji xian zhe ,jue ding ji shu R~2=0.9986;gen ju hui gui mo xing you hua ,que ding dao chi chang du 3cm,dao chi heng xiang jian ju 12cm,chi zuo jian ju 35cm;zai gai can shu zu ge xia ,zhuang zhi pu liao liang he hou du jun yun xing man zu yao qiu ,zhuang zhi zu li ju kuo dang ;gen ju she ji he fang zhen ,wan cheng le che zai jie kun pu liao zhuang zhi de san wei jian mo ji ji shi zhi 。(5)dui che zai jie kun pu liao zhuang zhi jin hang le shi che chan yin su shi yan ,jie guo biao ming :che su yu jie kun zhuai su dui fu gai kuan du de ying xiang jiao xiao ,fu gai kuan du zong ti lve kuan yu che xiang kuan du ,ju jie gan de fu gai kuan du biao xian chu liang hao de kuan du jun yun xing ;dang che su zai 0.6~1.4km/hfan wei nei zeng da shi ,fu gai ji fu gai hou du zhu jian jian xiao ,fu gai hou du biao zhun cha zhu jian jian xiao ,fu gai hou du zai 10~19cmzhi jian ;dang jie kun zhuai su zai 180~280r/minfan wei nei zeng da shi ,fu gai ji fu gai hou du zhu jian zeng da ,fu gai hou du biao zhun cha zhu jian zeng da ,fu gai hou du zai 7~18cmzhi jian ;shi ji fu gai xiao guo yu fang zhen fu gai xiao guo jie jin ,shui ming jian li de fang zhen mo xing jiao wei ke kao ,gen ju fang zhen dui bo liao dao chi de she ji jiao wei ge li 。(6)yi che su 、jie kun zhuai su jin hang le er yin su si shui ping shi che zheng jiao shi yan ,jie guo biao ming :hui gui fang cheng ji xian zhe ,jue ding ji shu R~2=0.9672,shui ming che su 、jie kun zhuai su yu jie gan fu gai hou du zhi jian de xian xing xiang guan xing jiao hao ;gen ju yan zheng shi yan biao ming :jie gan fu gai hou du ji suan zhi yu shi yan shi ce zhi zhi jian de jue ding ji shu wei 0.905,biao ming zheng jiao shi yan jian li de jie gan fu gai hou du mo xing jiao wei ge li ,ke jiao wei zhun que de miao shu che su 、jie kun zhuai su yu fu gai hou du zhi jian de guan ji ;gen ju fu gai hou du mo xing ,fu gai ji zai dui jie gan jin hang fu gai zuo ye shi ke shi xian 5.11~18.14cmfan wei nei ren yi hou du de fu gai 。che zai jie kun pu liao zhuang zhi de yan zhi wei nong ye ji xie di gong le xin zhuang bei ,neng shi guo yuan jie gan fu gai ji de jie gan deng qing zhi wu liao zhuang zai liang di gao le 2.5~3.4bei ,di gao le fu gai ji de gong zuo xiao lv 。
论文参考文献
论文详细介绍
论文作者分别是来自西北农林科技大学的高向瑜，发表于刊物西北农林科技大学2019-07-11论文，是一篇关于秸秆覆盖机论文,解捆装置论文,捆状秸秆论文,铺料论文,离散元仿真论文,西北农林科技大学2019-07-11论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自西北农林科技大学2019-07-11论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：秸秆覆盖机论文; 解捆装置论文; 捆状秸秆论文; 铺料论文; 离散元仿真论文; 西北农林科技大学2019-07-11论文;