摘要
为了解决运输时快装塔式起重机折叠高度过高的问题,设计了一种起重臂间的折叠机构,并根据起重臂截面尺寸,对机构的销轴位置作初步计算和定位。为验证该机构的可行性,利用三维建模软件Pro/E建立起重臂折叠机构的三维模型,导入多体动力学软件ADAMS中,根据折叠机构的工作原理添加约束副和驱动函数,建立折叠机构虚拟样机模型,对其进行运动学仿真分析。仿真结果证明,设计的机构能够满足起重臂从折叠到展开过程中的位移、速度和加速度等运动要求,故该机构是正确可行的,通过对运动特性的研究为折叠机构的结构优化提供依据。
To solve the problem of excessive folding height of the fast-assembly tower crane during transport, a folding mechanism between lifting booms is designed. Preliminary calculation is performed for hinge pin position based on the cross-section size of the lifting boom. To verify the feasibility of the mechanism, 3D modeling software Pro/E is adopted to develop the 3D model of the folding mechanism of the lifting boom, which is put into the muhibody dynamics software AD- AMS. The kinematic pair and driving function are added according to the working principle of the folding mechanism to de- velop a virtual prototype model for kinematics simulation analysis. The simulation resuh shows that the design mechanism can fully meet the motion requirements for displacement, speed, and acceleration of the lifting boom from folding to unfol- ding, indicating that the mechanism is feasible. The study on kinetic characteristic provides basis for the structural optimi- zation of the folding mechanism.
出处
《起重运输机械》
2016年第10期11-15,共5页
Hoisting and Conveying Machinery
基金
江苏省自然科学青年基金项目(BK20130741)
关键词
塔式起重机
快装
折叠机构
虚拟样机
运动学仿真
tower crane
fast-assembly
folding mechanism
virtual prototype
kinematics simulation
