中文摘要：

基于微型升降机构的工作原理,设计了一种平面折展升降柔顺机构,建立了该机构的伪刚体模型,利用虚功原理推导出平面折展升降机构的输入载荷与输出位移关系的计算公式。设计了基于LET铰链和LOOP铰链类型的平面折展升降机构实例,并对其中包含弧形片段的LOOP柔性铰链的弯扭耦合等效刚度进行了研究,分析得到其弯扭耦合等效刚度计算公式,通过2个设计实例的理论计算和有限元仿真分析,验证了理论公式和仿真模型的正确性。设计了基于LOOP铰链的升降机构的实物模型,计算、仿真分析和测试结果表明,该机构可产生较大提升量并且仍能保持良好的精度,达到了设计目标。

英文摘要：

A lamina emergent elevator mechanism was designed based on the principle of micro-elevator mechanism. Pseudo-rigid-body model of the elevator mechanism was established. The calculation formula of force-deflection relationship was derived based on the principle of virtual work. A lamina emergent elevator mechanism with LET hinge and LOOP hinge was designed and two kinds of elevator mechanism were studied. The bending and torsional equivalent coupled stiffness of LOOP flexible hinge which contains arc segment was studied and the calculation formula of the equivalent coupled stiffness was derived. The analysis of theoretical calculation and finite element simulation of the two designed examples showed that the theoretical calculation formula and the simulation model were correct. A physical model of the elevator mechanism based on LOOP flexible hinge was established and its function was tested.Calculation,simulation analysis and test results prove that this elevator mechanism can produce large lifting capacity with high accuracy in operating state and the slider displacement of the elevator mechanism has good input and output relationship with the rising displacement of the platform. The goal of design was reached.