旋转式水稻苗床平地机设计与试验  

Design and test of rotary rice seedbed grader

作　　者：陆博远 万霖[1] 车刚[1] 田雨琪 刘威 何树国 Lu Boyuan;Wan Lin;Che Gang;Tian Yuqi;Liu Wei;He shuguo(College of Engineering Heilongjiang Bayi Agricultural University,Daqing,163319,China;Jiamusi Branch of Heilongjiang Academy of Agricultural Machinery Engineering,Jiamusi,154004,China)

机构地区：[1]黑龙江八一农垦大学工程学院,黑龙江大庆163319 [2]黑龙江省农业机械工程科学研究院佳木斯分院,黑龙江佳木斯154004

出　　处：《中国农机化学报》2024年第4期12-17,共6页Journal of Chinese Agricultural Mechanization

基　　金：全国基层农技推广项目(JCTG2021014);黑龙江省省属高等学校基本科研业务费科研项目(PTJH202002)。

摘　　要：针对标准化育秧大棚置床平地作业效率低,苗床平地精度差等问题,设计一种双旋转式叶片结构的水稻苗床平地机工作装置。确定工作装置结构参数和工作参数,分析关键部件运动参数和受力情况。通过Workbench软件分析,结果表明:关键部件的最大应力处应力为104.59 MPa;最大的总体变形仅为1.903 8 mm;前6阶固有频率在66.22~113.94 Hz之间,满足设计要求。田间试验结果表明:苗床床面最大高程差从15.8 cm下降至4.7 cm,地面相对高程标准偏差值从3.95 cm下降至0.98 cm,且作业后绝对差小于1.5 cm的测量点占比为92%,改善床面平整情况,满足当地棚室育秧需求。In view of the problems of low efficiency and poor accuracy of seedbed leveling in standardized seedling greenhouses,a working device of rice seedbed grader with double rotating blade structure was studied,the structural parameters and working parameters of the working device were determined,and the motion parameters and force of key components were analyzed.The analysis of Workbench software showed that the maximum stress of key components was 104.59 MPa;the maximum overall deformation was only 1.9038 mm;and the natural frequency of the first 6th order was between 66.22-113.94 Hz,which meets the design requirements.The field test results showed that the maximum elevation difference of the seedbed bed decreased from 15.8 cm to 4.7 cm after operation,the standard deviation value of the relative elevation of the ground decreased from 3.95 cm to 0.98 cm,and the absolute difference after operation accounted for 92%of the measurement points with an absolute difference of less than 1.5 cm,which improved the bed surface leveling and met the needs of local shed seedlings.

关 键 词：旋转式 水稻苗床平地机 刮土器 有限元分析 

分 类 号：S222.51[农业科学—农业机械化工程]