一种单输入3T1R并联振动筛主机构的拓扑结构和运动学分析  

Topological Structure and Kinematics Analysis of a Single Input 3T1R Parallel Shaker

作　　者：邓嘉鸣 李文华 沈惠平 曾氢菲 DENG Jiaming;LI Wenhua;SHEN Huiping;ZENG Qingfei(School of Mechanical Engineering, Changzhou University, Changzhou Jiangsu 213064, China)

机构地区：[1]常州大学机械工程学院

出　　处：《机械设计与研究》2018年第2期46-52,共7页Machine Design And Research

基　　金：国家自然科学基金资助项目(51375062,514755050);江苏省重点研发计划项目(BE2015043)

摘　　要：根据基于方位特征（POC）的并联机构拓扑结构设计理论,提出了一种新颖的、可用作并联振动筛振动驱动单元的单自由度输入、三平移一转动输出（3T1R）的并联机构。本文分析了该机构的拓扑结构特性,进行了机构的运动学求解;运用MATLAB软件得到了机构动平台（振动筛筛面）的输出速度及加速度变化曲线,并采用ADAMS软件进行运动仿真,验证了机构动平台上不同位置点的运动轨迹、速度及加速度的变化规律;最后由EDEM软件分别对并联振动筛与传统的直线振动筛进行筛分试验仿真,给出了筛分效率的结果。为少自由度输入并联机构的设计和应用提供了一定的理论基础。Based on the position ad orientation characteristic（ POC） of the parallel mechanism topology design theory,the paper presents a novel parallel mechanism that can be used as a single-degree-of-freedom input,threetranslational,one-rotation output（ 3 T1 R） for vibrating drive units of parallel vibrating screens. In this paper,the output speed and acceleration curve of the moving platform（ vibrating screen） are obtained by MATLAB software. The motion simulation is carried out by using ADAMS software to verify the variation of the trajectory,velocity and acceleration of the different points on the platform. Finally,the EDEM software is used to simulate the parallel shaker and the traditional linear vibrating screen respectively,and derives the results of the screening efficiency. Then it provides the theoretical basis and basis for the design and application of the less freedom parallel mechanism.

关 键 词：方位特征(POC) 少自由度并联机构 运动学分析 数值验证 

分 类 号：TH112[机械工程—机械设计及理论]