| 摘要: |
| 【目的】设计一种振动式三七根土分离装置，以实现三七根土复合体的根土分离。【方法】将三七根土分离装置简化为曲柄双摇杆机构，并对振动筛上的物料进行运动学分析，确定物料运动的影响因素，验证其运动参数设计的合理性；利用ADAMS对该装置进行运动学仿真，选取振动筛前后端点及质心作为研究对象，得到各点的合位移、合速度曲线并分析各曲线的变化规律，验证结构设计的合理性；以人工采挖的三七根土复合体作为试验材料，采用三因素三水平正交组合试验设计，分析各因素对根土分离率及三七损伤率的影响。【结果】在试验参数范围内，通过Design-Expert软件得到了最佳的工作组合为：曲柄转速295 r/min、筛面倾角8°、筛面长度620 mm。验证试验表明,最佳组合条件下根土分离率为95.7%，三七损伤率为1.9%。【结论】所设计的三七根土分离装置满足设计要求，为后续三七收获机的设计提供了依据。 |
| 关键词: 三七 根土分离 曲柄摇杆机构 运动学分析 |
| DOI： |
| 分类号: |
| 基金项目:云南省重点新产品开发项目(2014BC007)；云南省科技创新重大专项“克服三七连作障碍技术体系构建及应用”（2016FZ001） |
|
| Kinematic analysis and optimal design of vibration type device for Panax notoginseng root-soil separation |
|
CUI Zhenmeng,ZHANG Zhaoguo,WANG Faan,et al
|
| Abstract: |
| 【Objective】This study established a vibrating Panax notoginseng root soil separation device to separate root of P.notoginseng and soil from root-soil complex.【Method】The P. notoginseng root-soil separation device was simplified as a crank double rocker mechanism,and the motion of the material on the vibrating screen was analyzed to find out the factors that affect the movement of the material to verify whether the design was reasonable.The kinematic simulation of the device was carried out by ADAMS,and the front and back points of the vibrating screen and the center of mass were selected as the object of study.The displacement and the speed curve of each point were obtained and the variation of each curve was analyzed to verify the rationality.Artificial mining P. notoginseng root-soil complex was selected and orthogonal experiment design with three factors and three levels was used to understand the effects of factors on the separation rate and damage rate of P. notoginseng.【Result】In the ranges of test parameters,the best combination was obtained by Design Expert software with the crank speed of 295 r/min,the screen surface incline angle of 8° and the surface length of 620 mm.The verification test showed that the root-soil separation rate was 95.7% and the damage rate of P. notoginseng was 1.9%,meeting the design requirement.【Conclusion】The established device meets the design requirement and provides reference for subsequent design of P. notoginseng harvester. |
| Key words: Panax notoginseng root-soil separation crank rocker mechanism kinematic analysis |
