抓斗橋式起重機動態(tài)特性研究
[Abstract]:In modern logistics engineering, a large number of machinery and equipment are applied, among which, grabbing crane which is mainly used in loading and unloading of various kinds of materials plays a very important role. In the working process, the bridge frame structure is the main bearing part of the grab crane. It is necessary to use dynamic simulation technology to carry out accurate dynamic analysis of the bridge structure, which can improve the working efficiency of the grab crane. The reduction of labor intensity and the safety of staff are of considerable utility. The experiment is the most effective and direct method to accurately analyze the dynamic performance of the bridge structure of grab crane. It can actually measure the load and the structural stress of the crane. However, the measurement of lifting machinery can only be realized after the production of the product is completed, which will cause unnecessary losses and a long period. This paper analyzes the necessity and feasibility of the research on the dynamic characteristics of grab crane by understanding the development trend of grab crane and the research status of crane dynamic characteristics at home and abroad. The dynamic characteristics of the main girder of grab bridge crane are studied by using the finite element analysis software HYPERWORKS. The main contents are as follows: 1. The finite element model of the main girder structure of grab bridge crane is established by using HYPERMESH, and the constraint and loading of the finite element model static analysis are accomplished by the force analysis of the main girder structure. The static stiffness and strength of the structure are checked by finite element simulation. 2. The modal analysis of the finite element model is carried out to study the natural frequency and mode shape of the main beam structure to avoid the occurrence of resonance phenomenon and to provide a data reference for dynamic analysis. The vibration deformation of the main girder structure in the working process of grab bridge crane is studied. A complete working process is divided into two parts: the lifting process and the unloading process. In the process of hoisting, the change of wire rope force and the action time of wire rope pre-tightening are considered. In the process of unloading, the load variation mode is different according to different grabbing conditions. By using the finite element software HYPERWORKS, the transient dynamic analysis of hoisting and unloading process is carried out, and the displacement curve of the main beam is obtained, and the variation trend of the main beam vibration is judged under different conditions, which provides a reference for the design of the main girder of the crane.
【學位授予單位】:武漢科技大學
【學位級別】:碩士
【學位授予年份】:2012
【分類號】:TH215
【參考文獻】
相關期刊論文 前10條
1 鄒毅松;袁波波;王銀輝;陳闖;;基于瞬態(tài)動力分析的裝配式板橋鉸縫損傷識別[J];重慶交通大學學報(自然科學版);2011年01期
2 楊曉光;白露;石多奇;于慧臣;;鎳基單晶合金蠕變研究:葉片蠕變的有限元分析[J];航空動力學報;2010年12期
3 張勝蘭,嚴飛;基于HyperWorks的車架模態(tài)分析[J];機械設計與制造;2005年04期
4 周新建;吳健;于孟;;全地形車差速器殼體結構設計及有限元分析[J];機械設計與制造;2011年04期
5 胡世軍;張富;鄧洋;韓健;;基于HyperWorks的進給箱體拓撲優(yōu)化設計[J];機械與電子;2011年09期
6 胡宗武;起重機動載荷的簡化計算[J];起重運輸機械;1982年02期
7 饒剛;;53m大跨度橋式起重機設計中有限元技術的應用[J];起重運輸機械;2008年03期
8 何曉慧;王重華;;基于APDL的龍門起重機有限元分析[J];機械工程與自動化;2007年06期
9 姚克恒;殷晨波;;以ANSYS為平臺的塔式起重機臂架有限元分析與關鍵技術研究[J];現代制造工程;2009年12期
10 陳官順;劉艷斌;葉星;;龍門起重機結構動態(tài)優(yōu)化設計[J];現代制造工程;2010年08期
相關博士學位論文 前1條
1 陳雅琴;橋梁結構分析的廣義變分原理-Daubechies條件小波法研究[D];長安大學;2008年
相關碩士學位論文 前10條
1 王存剛;基于ADAMS的船載特種起重機動力學仿真與控制研究[D];哈爾濱工程大學;2010年
2 杜鵬;卸船機前大梁結構的數字化設計[D];武漢理工大學;2011年
3 尹鋒;臂橋架起重機橋架結構參數化設計及有限元分析[D];武漢理工大學;2011年
4 羅家t
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