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浙江大学学报(工学版)  2019, Vol. 53 Issue (6): 1040-1046    DOI: 10.3785/j.issn.1008-973X.2019.06.003
土木与建筑工程     
基于平行四边形环链的旋转开合板式结构
俞锋(),许贤,罗尧治*()
浙江大学 空间结构研究中心,浙江 杭州 310058
Rotary retractable plate structures with parallelogram closed-loop chains
Feng YU(),Xian XU,Yao-zhi LUO*()
Space Structures Research Center of Zhejiang University, Hangzhou 310058, China
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摘要:

为提高开合结构在开启过程中的安全稳定性,提出一种绕定点旋转开合的板式结构,内部的定点可作为结构的支撑约束点. 运用欧式几何分析方法研究平行四边形环链的运动规律,发现平行四边形环链的一组角梁单元具有绕定点旋转的运动特性;据此提出以板单元替换旋转角梁单元来构造旋转开合板式结构,给出板单元分割时需满足的几何协调条件以及板单元分割线的可调整范围;阐述旋转开合板式结构开启角度、开口面积和板单元分割线倾斜方向、布置位置、形状间的内在关系,得出增加旋转开合板式结构开启角度和开口面积的方法. 研究结果可为绕定点旋转开合板式结构的设计提供参考.

关键词: 平行四边形闭环链(PCLC)旋转开合板式结构几何协调板单元划分    
Abstract:

A rotary retractable plate structure (RRPS) was proposed with the fixed points as supports, to improve the safety and stability of the retractable structure during the retraction. The motion law of parallelogram closed-loop chains (PCLC) was analyzed by using Euclid geometry method, which shows that a set of the angulated beams of PCLC rotates around the fixed points. To construct RRPS, the rotation angulated beams were replaced by the plate elements. The geometrical compatibility and the adjustable range of the plate element segmentation were presented. Elaborate the relationship between the opening angle, opening area of RRPS and the inclined direction, location, shape of the plate element segmentation, and the method to increase the opening angle, opening area of RRPS was obtained. The research results can provide reference for the design of RRPS.

Key words: parallelogram closed-loop chains (PCLC)    rotary retraction    plate structures    geometrical compatibility    panel division
收稿日期: 2018-05-08 出版日期: 2019-05-22
CLC:  TU 318  
通讯作者: 罗尧治     E-mail: 05tmgcyufeng@163.com;luoyz@zju.edu.cn
作者简介: 俞锋(1986—), 男, 博士, 从事大跨度空间结构科研工作. orcid.org/0000-0003-0886-6186. E-mail: 05tmgcyufeng@163.com
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引用本文:

俞锋,许贤,罗尧治. 基于平行四边形环链的旋转开合板式结构[J]. 浙江大学学报(工学版), 2019, 53(6): 1040-1046.

Feng YU,Xian XU,Yao-zhi LUO. Rotary retractable plate structures with parallelogram closed-loop chains. Journal of ZheJiang University (Engineering Science), 2019, 53(6): 1040-1046.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2019.06.003        http://www.zjujournals.com/eng/CN/Y2019/V53/I6/1040

图 1  平行四边形环链示意图
图 2  平行四边形环链和对应的板单元
图 3  相邻板单元运动特性示意图
图 4  旋转开合板式结构(RRPS)示意图
图 5  直线分割线旋转开合板式结构示意图
图 6  圆弧分割线旋转开合板式结构示意图
n s n s n s
5 0.149 7 0.087 9 0.028
6 0.000 8 0.063 10 0.046
表 1  定点与圆弧分割线的相对距离
图 7  调整前旋转开合板式结构
图 8  分割线位置调整后旋转开合板式结构
图 9  分割线形状调整后旋转开合板式结构
图 10  旋转开合板式结构模型
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