A Novel Two-Layer and Two-Loop Deployable Linkage With Accurate Vertical Straight-Line Motion

被引：10

作者：

Cao, Wen-ao ^{[1
]}

Zhang, De ^{[1
]}

Ding, Huafeng ^{[1
]}

机构：

[1] China Univ Geosci Wuhan, Sch Mech Engn & Elect Informat, 388 Lumo Rd, Wuhan 430074, Peoples R China

来源：

JOURNAL OF MECHANICAL DESIGN | 2020年 / 142卷 / 10期

基金：

中国国家自然科学基金;

关键词：

kinematics; linkages; straight-line motion; deployable mechanisms; two-layer and two-loop; STRUCTURAL SYNTHESIS; SPATIAL MECHANISMS; KINEMATIC ANALYSIS; MOBILITY ANALYSIS;

D O I：

10.1115/1.4046239

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper presents a novel two-layer and two-loop spatial deployable linkage which can only accurately output vertical straight-line motion. First, the degree-of-freedom (DOF) of the linkage is analyzed based on structure decomposition and screw theory, and the characteristic of the straight-line motion of the linkage is verified by checking the output twist of the end platform. Then, the kinematic model of the mechanism is established based on the conditions of the straight-line motion and the single DOF. Finally, several potentially typical applications of the linkage are exhibited. The straight-line linkage has relatively simple joint layouts and kinematics model and can be used as a deployable unit to construct some special deployable mechanisms.

引用

页数：8

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