A New Family of Deployable Mechanisms Derived From Two-Layer and Two-Loop Spatial Linkages With Five Revolute Pair Coupling Chains

Author:

Cao Wen-ao1,Yang Donghao1,Ding Huafeng1

Affiliation:

1. School of Mechanical Engineering and Electronic Information, China University of Geosciences (Wuhan), No. 388 Lumo Road, Wuhan 430074, China e-mail:

Abstract

This paper aims to construct a novel family of deployable mechanisms from a class of two-layer and two-loop spatial linkages, each of which consists of an eight revolute pair (8R) single-loop linkage connected by a 5R serial chain. First, structural characteristics of the class of linkages as deployable units are analyzed and illustrated. Then, the two-layer and two-loop spatial linkages with 5R chains satisfying the structural characteristics are systematically synthesized. Mobile assembly modes between deployable units are established based on degree-of-freedom (DOF) analysis. Finally, a family of single DOF deployable mechanisms is constructed based on the synthesized deployable units and the established assembly modes. The derived deployable mechanisms have the characteristic of the umbrella-like structure, and they have various mesh shapes, which can meet different kinds of application requirements.

Funder

National Natural Science Foundation of China

China Postdoctoral Science Foundation

Publisher

ASME International

Subject

Mechanical Engineering

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