摘要
针对传统起竖机构在有限空间下起竖受到限制的问题,提出一种后铰支点可移式起竖机构的设计方案,建立该机构的等效物理模型和基于闭环矢量方程的数学模型;对机构进行运动学和动力学分析,并在Matlab/Simulink中建立基于机构运动学和动力学方程的动态仿真模型;在给定起竖时间与油缸驱动方式的条件下,利用联立约束法对新型起竖机构进行动态仿真。仿真和分析结果表明:该机构能够满足快速性和平稳性要求,有效节省起竖空间。
Traditional erection mechanism is restricted in narrow space.Aiming at the problem,a new erection mechanism with floating back-pivot was proposed and its physical model and mathematic model based on vector loop equations were set up.The kinematics and dynamics equations of the mechanism were given.The dynamic simulation model based on the kinematics and dynamics equations was built in Matlab/Simulink.With the prescriptive conditions of erection time and driven mode of the jack,the dynamic simulation for the new erection mechanism was made using co-restriction method.The analysis and simulation conclusions demonstrate that the mechanism can satisfy fast and steady request and erection space is economized effectively.
出处
《机床与液压》
北大核心
2011年第7期114-116,73,共4页
Machine Tool & Hydraulics
关键词
起竖机构
矢量方程
联立约束法
动态仿真
Erection mechanism
Vector equation
Co-restriction method
Dynamic simulation
