摘要
对双摇杆机构运动分析和设计方法的研究不多,有必要系统地进行相关研究。从摇杆极限位置的几何条件出发,按照主动摇杆极限位置和最长杆位置不同,分别研究了满足最短杆和最长杆长度之和大于其余两个长度之和条件的各类型双摇杆机构运动特点。给出了各类型双摇杆机构主动摇杆和从动摇杆转角与时间的关系曲线。提出了从动摇杆伪极限摆角的概念,并应用于双摇杆机构的运动分析和设计。基于运动分析结果,给出了满足最短杆和最长杆长度之和大于其余两个长度之和条件的各类型双摇杆机构解析设计方法。
As the research on motion analysis and design of double-rocker mechanism is limited,it is necessary to study about it systematically. Starting with the geometric conditions for extreme position of rocker,according to different extreme position of driving rocker and position of the longest link,the motion characteristics of double-rocker mechanism of different types are studied separately,which satisfies the condition that sum of length of the longest link and the shortest link is greater the sum of lengths of the other two links. The curves which reflect the relationship between rotation angle of rocker and time of different double-rocker mechanism are given. The new concept of pseudo limit swing angle of driven rocker is proposed,which is applied to motion analysis and design of double-rocker mechanism. Analytical design methods of double-rocker mechanism which satisfies the condition that the sum of length of the longest link and the shortest link is greater the sum of lengths of the other two links are put forward based on the results of the motion analysis.
作者
杨世明
马庆国
YANG Shiming;MA Qingguo(School of Mechanical Engineering,Tianjin Polytechnic University, Tianjin 300387, Chin)
出处
《机械设计与研究》
CSCD
北大核心
2018年第2期71-75,共5页
Machine Design And Research
关键词
双摇杆机构
运动分析
伪极限摆角
设计
解析法
double- rocker mechanism
motion analysis
fake limit swing angle
kinematic design
analytical method
