This paper investigates the application of a planar deployable structure with screw theory and discusses its possible applications in overconstrained lift platforms via calculating its stiffness. These platforms are all made up of a number of identical scissor-form pivoted links. Compared with their traditional counterparts, the lift platforms with planar deployable structures have higher stiffness and higher strength in applications because every lift platform is multiplane overconstrained mechanism connected by a strengthened frame at each deployable layer. In operation, these deployable structures are always symmetric about the vertical central axis connecting the moving platform and the fixed one. Therefore, the stress conditions of the links in each layer can be assumed to be identical as the lift platform is moving up and down. Prototype test illustrates the innovation of the lift mechanisms while keeping the same load capacity.
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April 2016
Research-Article
Planar Deployable Linkage and Its Application in Overconstrained Lift Mechanism
Dong-Jie Zhao,
Dong-Jie Zhao
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: 981337643@qq.com
Tsinghua University,
Beijing 100084, China
e-mail: 981337643@qq.com
Search for other works by this author on:
Jing-Shan Zhao,
Jing-Shan Zhao
State Key Laboratory of Tribology,
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: jingshanzhao@mail.tsinghua.edu.cn
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: jingshanzhao@mail.tsinghua.edu.cn
Search for other works by this author on:
Zheng-Fang Yan
Zheng-Fang Yan
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: colorsquare@163.com
Tsinghua University,
Beijing 100084, China
e-mail: colorsquare@163.com
Search for other works by this author on:
Dong-Jie Zhao
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: 981337643@qq.com
Tsinghua University,
Beijing 100084, China
e-mail: 981337643@qq.com
Jing-Shan Zhao
State Key Laboratory of Tribology,
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: jingshanzhao@mail.tsinghua.edu.cn
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: jingshanzhao@mail.tsinghua.edu.cn
Zheng-Fang Yan
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: colorsquare@163.com
Tsinghua University,
Beijing 100084, China
e-mail: colorsquare@163.com
1Corresponding author.
Manuscript received April 29, 2014; final manuscript received November 7, 2015; published online January 6, 2016. Assoc. Editor: Qiaode Jeffrey Ge.
J. Mechanisms Robotics. Apr 2016, 8(2): 021022 (9 pages)
Published Online: January 6, 2016
Article history
Received:
April 29, 2014
Revised:
November 7, 2015
Citation
Zhao, D., Zhao, J., and Yan, Z. (January 6, 2016). "Planar Deployable Linkage and Its Application in Overconstrained Lift Mechanism." ASME. J. Mechanisms Robotics. April 2016; 8(2): 021022. https://doi.org/10.1115/1.4032096
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