An Extended Myard Linkage and its Derived 6R Linkage
An Extended Myard Linkage and its Derived 6R Linkage
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DOI：
10.1115/1.2885506
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发表时间：
2008-05
影响因子：
3.3
通讯作者：
Yan Chen;Z. You
中科院分区：
文献类型：
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作者：
Yan Chen;Z. You
本文提出了一种适用于大型可展开结构的6R连杆结构。首先，我们报道了通过结合两个互补的Bennett键构建扩展5R Myard键的可能性。与最初的5R迈亚德连杆（也称为迈亚德的“1号”连杆）不同，贝内特连杆的扭转角不必是π/2。然后，我们证明了通过合并两个扩展的Myard连杆并去除共同连杆可以产生一个6R连杆。推导了6R连杆机构的闭包方程，讨论了其运动特性。此外，我们证明了许多这样的6R连杆可以组装在一起，形成一个大规模的可展开的结构，它打开一个平坦的轮廓。
In this paper, a 6R linkage suitable as a building block for the construction of large deployable structures is presented. First, we report the possibility of construct an extended 5R Myard linkage by combining two complimentary Bennett linkages. Unlike the original 5R Myard linkage (also called Myard's "number 1" linkage), the angle of twists in the Bennett linkages is not necessary to be π/2. Then we show that a 6R linkage can be produced by merging two extended Myard linkages together and removing the common links. The closure equations for the 6R linkage are derived and its motion characteristics are discussed. Moreover, we demonstrate that a number of such 6R linkages can be assembled together to form a large-scale deployable structure, which opens to a flat profile.