学术
摘 要:
为适应不同作物清选的需要,提出了一种可满足多种作业需要的空间振动筛思想,并设计了该振动筛的主体机构。该振动筛采用四自由度并联机构作为主体机构,能方便地调节振动筛的振幅和振动方向。该并联机构包含4条支路,其中2条支路为R-R-P型结构,另外2条支路为R-R-R-R-P型结构。以该机构的动平台为振动筛的筛面,能实现2个方向的移动,以及绕2个方向轴线的转动。应用转换矩阵对该机构进行运动学建模,并给出了该机构运动学的正解和反解。结果表明可以将此机构应用于振动筛。[著者文摘]
文章出处:
《农业机械学报》-2008年39卷2期 -59-62页
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文献标识码:
A
Kinematical Analysis of Virbrating Screen on a Kind of 2T - 2R Parallel Mechanism
Liu Jianmin, Ma Luzhong ,Xu Zihong, Zhong Donghua, Feng Shijia （Jiangsu University ）
Abstract:
An idea of spatial vibrating screen was presented to meet the different needs in screening crops, and its main body has been designed. A kind of four degrees-of-freedom parallel mechanism has been used by the screen as the main body. It could adjust the amplitude and the vibration direction of the vibrating screen conveniently. This parallel mechanism included four legs, where two legs were types of R - R - P, the others were R - R - R - R - P. The moving platform of this mechanism, used as a screen platform, could achieve a movement in two durations and a rotation around two directional axes. The kinematics modeling method of this mechanism was studied by using conversion matrix, and the kinematics positive and inverse solutions of this mechanism were presented. The result indicated that this mechanism could be applied in the vibrating screen.[著者文摘]
Key words:
Virbrating screen, Parallel mechanism, Kinematical analysis
基金资助:
国家自然科学基金资助项目（项目编号：50375067）和高等学校博士点专项科研基金资助项目（项目编号：20050299002）
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