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J4  2013, Vol. 47 Issue (5): 812-817    DOI: 10.3785/j.issn.1008-973X.2013.05.011
浙江大学 空间结构研究中心,浙江 杭州310058
Configuration research on parallelogram closed-loop linkages
WANG Dai-wei, LUO Yao-zhi
Space Structure Research Centre, Zhejiang University, Hangzhou 310058, China
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Since the design of movable structures can be inspired by taking full advantage of existent basic mechanisms, parallelogram closed-loop linkages suitable as structural mechanisms were presented and the alternative forms were discussed. Swivel-chain linkages and double-chain linkages are actually two different forms of parallelogram closed-loop linkages. Starting with comparing geometric elements of the two forms, a correspondence is found that every swivel-chain linkage can evolve a double-chain linkage. The result shows that the double-chain linkage can be also designed into retractable plate structure containing fixed external supports. Then the motion principle of open chain was derived by using Euclid geometry method. Based on the derivation, the motion characteristic and the mobility condition of closed chain were verified. On the basis of review and analysis of You and Wohlharts explorations for radial extending, two new methods called general (foldable bar structures, FBS) radial extending and circular extending were proposed.

出版日期: 2013-05-01
:  TU 318  


通讯作者: 罗尧治,男,教授,博导.     E-mail:
作者简介: 王戴薇(1987-),女,,硕士,从事空间结构方面研究.E-mail:
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王戴薇,罗尧治. 平行四边形环链机构构形[J]. J4, 2013, 47(5): 812-817.

WANG Dai-wei, LUO Yao-zhi. Configuration research on parallelogram closed-loop linkages. J4, 2013, 47(5): 812-817.


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