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A Study on the Static Stability of Scissor Lift



Wei Zhang*, 1, 2, 3, Chen Zhang2, Jiangbo Zhao3, Chunzhi Du1
1 Airport College, Civil Aviation University of China, 100 Road Xunhai, Tianjin, P.R. China
2 Sino-European Institute of Aviation Engineering, 100 Road Xunhai, Tianjin, P.R. China
3 Aviation Ground Special Equipment Research 100 Road Xunhai, Tianjin, P.R. China


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© 2015 Zhang et al

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Airport College, Civil Aviation University of China, 100 Road Xunhai, Tianjin, P.R. China; Tel: +86 22 24092477; Fax: +86 22 24092886; E-mail: caucaslm@163.com


Abstract

This research paper studies the static stability of six kinds of scissor lifts with one input force of hydraulic actuator by having the input on the lines of the nodes of the scissor lifts. Firstly, the static stability of single scissor arm is studied by using energy method and modeling method in the software Nastran. The stability results of two methods are then compared. Subsequently, the scissor lift models with hydraulic actuators are prepared to analyze the static stability. The static stability of six kinds of scissor lifts is compared. It is thus found that the results of the overall model are closer to the actual situation. The analysis of single arm models has made it easier to compare the theoretical solutions and modeling solutions thus the study on stability of single scissor arm has been proved to be meaningful.

Keywords: Energy method, Finite element method, Scissor lift, Static stability.