移栽机行星轮转臂式栽植器运动分析与试验  

Motion Analysis and Experiment for Planting Mechanism with Planetary Gears of Transplanting Machine

作　　者：胡建平[1] 张建兵[1] 何俊艺[1] 严宵月 

机构地区：[1]江苏大学现代农业装备与技术教育部重点实验室,镇江212013

出　　处：《农业机械学报》2013年第10期57-61,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：江苏省科技支撑计划(农业部分)资助项目(BE2012381);江苏高校优势学科建设工程资助项目(苏财教[2011]8号);江苏省青蓝工程资助项目(苏教师[2010]27号)

摘　　要：提出了一种行星轮多转臂式栽植器,阐述了其结构及工作原理,建立了栽植器末端运动轨迹方程,并引入特征系数λ,得出不同λ时栽植器末端动轨迹。以单个鸭嘴栽植器为研究对象,建立了由行星轮栽植器、钵体、苗茎及地面组成的虚拟样机模型,以栽植频率30株/min为设计参数,仿真分析了特征系数λ在0.90、1.00、1.18、1.24和1.28时前、后鸭嘴末端动轨迹及鸭嘴开合落苗情况。仿真结果表明:λ为0.90、1.00时,后鸭嘴避苗不及时,对钵苗产生挂带,使钵苗向前移动甚至倒伏;λ为1.18、1.24时,前、后鸭嘴避苗都较充分,对钵苗不会产生挂带作用;λ为1.28时,后鸭嘴避苗空间更充分,但前鸭嘴避苗空间不足,对钵苗产生挂带作用。在自制土槽试验台上,以λ为0.90、1.00、1.22为试验参数,对苗龄为20 d的黄瓜钵苗进行样机试验,结果表明λ为1.22时钵苗直立度最好,优良率达到86.7%,λ为0.90时最差,优良率为零,试验结果与仿真结果吻合。A planting mechanism with planetary gears of transplanting machine was put forward. Its structure and working principle were expounded and motion trajectory equation was established. The characteristic coefficient λ was introduced and planting mechanism end＇s motion trajectory was obtained with the different λ. Taking a single duck mouth planting mechanism as the research object, the virtual prototype was established, which was composed of planetary gears, seedling and the surface. The planting frequency of 30 plants/min was set as the design parameter. The former and latter duck mouth ends＇ motion trajectory and the duck mouth＇s opening, felling seedling situations were simulated when the A was 0.90, 1.00, 1.18, 1.24 and 1, 28. The simulation results showed that when λ was 0.90 and i. 00, the latter duck mouth avoiding seedling was not in time and making the seedling moving forward even lodging. When λ was 1.18 and 1.24, the former and the latter duck mouth avoiding seedling were full and the seedling won＇t be interfered. When λ was 1.28, the latter duck mouth avoiding seedlings＇ space was more fully, but the former duek mouth avoiding seedlings＇ space was insufficient and the seedling was interfered. When the characteristic coefficient λ was 0.90, 1.00 and 1.22, the prototype experiment was carried out on cucumber seedling of 20 d in the homemade soil bin. The results showed that for λ of 1.22, the upright degree of seedling was the best. The excellent-good rate was up to 86.7%. For λ of 0.90, the upright degree of seedling The test results and simulation results were consistent. was the worst and the excellent-good rate was O.

关 键 词：移栽机 行星轮栽植器 特征系数 仿真 试验 

分 类 号：S223[农业科学—农业机械化工程]