沙槽设计与纵向插草测试研究
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摘要
为了研究草沙障铺设过程中插入阻力和牵引的大小和影响因素,并为固沙装备铺设系统和牵引动力系统设计提供理论参数,本研究设计并搭建了草沙障插入装置试验平台,对刀盘在沙地中插草过程进行了参数化建模,分析了刀盘各运动状态下的受力因素,并进行了参数化计算和公式推导,建立了不同运动状态下插入阻力和牵引力平衡方程。结果表明,通过单因素和正交试验研究,铺设速度对插入阻力和牵引力大小并无明显影响,但是插入深度和铺设厚度对两者影响显著。建立插入阻力和牵引阻力与插入深度、铺设厚度、铺设速度之间的回归模型,通过分析回归模型和响应面结果最终得出影响插入阻力的因素主次顺序为铺设厚度和插入阻力,影响牵引力的因素主次为插入深度和铺设厚度。将实际测量值与理论模型计算值比较,最后得出相近程度达到98%左右。
In order to study the insertion resistance and traction size and influencing factors during the construction of grass sand barriers,and to provide theoretical parameters for the design of sand-fixing equipment laying system and traction power system,the test platform of the grass sand barrier insertion device was designed and built.The parametric model of the cutting blade in the sand was parametrically modeled.The stress factors under the motion state of the cutter head were analyzed,and the parameterized calculation and formula were carried out.Derivation,the equation of insertion resistance and traction balance under different motion states was established.Through single factor and orthogonal experiments,it was found that the laying speed had no significant effect on the insertion resistance and traction force,but the insertion depth and laying thickness had significant effects on both.The regression model between the insertion resistance and the traction resistance and the insertion depth,the laying thickness and the laying speed was established.By analyzing the regression model and the response surface results,the factors affecting the insertion resistance were obtained.In order to lay the thickness and the insertion resistance,the factors affecting the traction were the insertion depth and the laying thickness.The actual measured values were compared with the theoretical model calculated values,the similarity was about 98%.
In order to study the insertion resistance and traction size and influencing factors during the construction of grass sand barriers,and to provide theoretical parameters for the design of sand-fixing equipment laying system and traction power system,the test platform of the grass sand barrier insertion device was designed and built.The parametric model of the cutting blade in the sand was parametrically modeled.The stress factors under the motion state of the cutter head were analyzed,and the parameterized calculation and formula were carried out.Derivation,the equation of insertion resistance and traction balance under different motion states was established.Through single factor and orthogonal experiments,it was found that the laying speed had no significant effect on the insertion resistance and traction force,but the insertion depth and laying thickness had significant effects on both.The regression model between the insertion resistance and the traction resistance and the insertion depth,the laying thickness and the laying speed was established.By analyzing the regression model and the response surface results,the factors affecting the insertion resistance were obtained.In order to lay the thickness and the insertion resistance,the factors affecting the traction were the insertion depth and the laying thickness.The actual measured values were compared with the theoretical model calculated values,the similarity was about 98%.
引文
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[2] 李惠卿.荒漠化研究动态[J].世界林业研究,2004,17(1):11-14.LI H Q.Desertification research[J].World Forestry Research,2004,17(1):11-14.(in Chinese)
[3] 王淮亮,高永,姜海荣,等.防沙治沙技术技术与模式回顾[J].内蒙古林业科技,2012,38(1):46-52.
[4] 刘大为.草方格治沙的奥秘[J].力学与实践,2013(35):102-105.LIU D W.The mystery of the grass[J].Mechanics and Practice,2013(35):102-105.(in Chinese)
[5] 舒庆.防风固沙草方格铺设机器人设计及动力学分析[D].哈尔滨:东北林业大学,2007.
[6] 刘姝颖,李宁,陆小辉.草方格在防风固沙工程中的应用[J].辽宁林业科技,2014(3):67-68.LIU S Y,LI N,LU X H.Application of grass square in wind and sand fixation project[J].Liaoning Forestry Science and Technology,2014(3):67-68.(in Chinese)
[7] 李跃娟.草方格铺设机器人横向气动插草机构动力学仿真分析[D].哈尔滨:东北林业大学,2005.
[8] 白晓虎.免耕播种机关键部件及其参数化设计方法研究[D].沈阳:沈阳农业大学,2012.
[9] 马洪亮,等.驱动圆盘刀切断玉米秸秆和根茬的土槽试验[J].农业机械学报,2007,38(5):47-50.MA H L.Soil trough test for driving corn stalk and root hoe by driving disc cutter[J].Journal of Agricultural Machinery,2007,38(5):47-50.(in Chinese)
[10] 刘必隆.麦草方格的故事[J].中国民族,2003(10):59-60.LIU B L.Wheat grass checkered story[J].Chinese Nation,2003(10):59-60.(in Chinese)
[11] 杨博,刘晋浩.草方格机器人纵向铺设轮系的试验研究[J].林业机械与木工设备,2007,35(2):22-25.YANG B,LIU J H.Experimental study on longitudinally laying wheel train of grass square robot[J].Forestry Machinery and Woodworking Equipment,2007,35(2):22-25.(in Chinese)
[12] 卢彩云,等.基于滑板压秆旋切式防堵装置的秸秆摩擦特性研究[J].农业工程学报,2016,32(11):83-89.LU C Y.Study on straw friction characteristics of anti-blocking device based on slider squeezing[J].Journal of Agricultural Engineering,2016,32(11):83-89.(in Chinese)
[13] 王庆杰,等.驱动圆盘玉米垄作免耕播种机设计与试验[J].农业机械学报,2008,39(6):68-72.WANG Q J.Design and test of driving disc corn ridge as no-tillage planter[J].Journal of Agricultural Machinery,2008,39(6):68-72.(in Chinese)
[14] 包文育.东北垄作免耕播种机关键部件研究与整机设计[D].沈阳:沈阳农业大学,2009.
[15] 刘晋浩,杨博.固沙机器人纵向铺设轮系力学有限元分析初探[J].科技资讯,2007(6):137-138.LIU J H,YANG B.Preliminary study on finite element analysis of longitudinal laying wheel train mechanics of sand-fixing robot[J].Technology Information,2007(6):137-138.(in Chinese)
[16] 陈宏祥.黑河中游荒漠绿洲过渡带固沙植被土壤水分的分布特征[J].西北林学院学报,2017,32(6):67-73.CHEN H X.Distribution characteristics of soil moisture of sand-fixing vegetation in desert-oasis ecotone in the middle reaches of the Heihe River[J].Journal of Northwest Forestry University,2017,32(6):67-73.(in Chinese)