本文選題：港口移動高架起重機 + 結構��； 參考：《華南理工大學》2015年碩士論文

【摘要】：港口移動高架起重機是一種廣泛應用于港口碼頭集裝箱、雜件貨及散貨等貨物吊運裝卸的可移動的多用途起重設備,在國外已有60多年的發(fā)展歷史,具有起重能力強、效率高、性能可靠等特點,并具有良好的機動性、適應性和經(jīng)濟性,在國外港口碼頭得到廣泛的使用,目前其主要市場和技術都被國外生產(chǎn)企業(yè)壟斷,在我國還沒有設計和制造的企業(yè),設備開發(fā)制造具有一定的技術難點,結構件的設計和焊接工藝是其關鍵的技術之一。本論文結合企業(yè)開發(fā)的SGQ105G型港口移動高架起重機項目,從整機的結構設計到生產(chǎn)制造,結合分析軟件及試驗方法分析結構設計及焊接工藝的特點和要求。研究分析了高強度材料在結構上的應用及焊接工藝性能,最后完成樣機的制造,對整機性能進行測試,驗證結構設計和焊接工藝的可行性和可靠性。本文研究內(nèi)容和結論如下:(1)通過研究分析高架起重機的工作特點,臂架采用了鋼管桁架式變截面四弦桿結構,并建立了有限元分析模型,分析了臂架在不同工況下的強度和剛度情況,通過分析結果可知所采用的臂架結構形式整體受力較為均勻,主要應力集中在變幅油缸鉸點附近及筋板位置,整體結構符合高架起重機工作要求。(2)利用模擬軟件對塔身結構進行了鉸點優(yōu)化分析,選取了合適的鉸點位置,使塔身在結構受力及整機作業(yè)性能要求下達到一個較為理想的狀態(tài)。(3)為降低整機重量,提高整機作業(yè)性能,臂架結構采用了高強度材料HSM770代替普通的鋼材,以獲得更好的強度和剛度。(4)通過試驗對高強度材料HSM770的焊接性能進行了分析,分析結果表明采用一定的措施和焊接工藝方法能有效確保其焊接性能和力學性能。(5)完成了整機的生產(chǎn)制造,通過性能測試及質(zhì)量檢測,進一步驗證了結構設計的可靠性,以及高強鋼HSM770具有良好的焊接性能,適用于高架起重機產(chǎn)品的開發(fā)。
[Abstract]:Port mobile overhead crane is a kind of removable multi use lifting equipment which is widely used in port and wharf container, hybrid cargo and bulk cargo. It has a history of more than 60 years of development abroad. It has the characteristics of strong lifting capacity, high efficiency, reliable performance and so on. It has good mobility, adaptability and economy in China. The external port wharf is widely used. At present, its main market and technology are monopolized by foreign production enterprises. In our country, there are no enterprises designed and manufactured in China. Equipment development and manufacturing have some technical difficulties. The design and welding process of the structure parts are one of the key technologies. This paper combines with the SGQ105G port movement developed by the enterprise. The movable overhead crane project, from the structure design to the manufacturing, analyses the characteristics and requirements of the structure design and welding process with the analysis software and the test method. The application of the high strength material in the structure and the welding process performance are analyzed and analyzed. Finally, the prototype is made, the performance of the machine is tested and the structure design is verified. And the feasibility and reliability of the welding process. The contents and conclusions of this paper are as follows: (1) through the study and analysis of the working characteristics of elevated crane, the arm truss adopts a steel tube truss type four chord structure with variable cross section, and a finite element analysis model is established. The strength and stiffness of the arm frame under different working conditions are analyzed, and the results are known by the analysis results. The overall stress of the arm frame is more uniform, the main stress is concentrated near the hinge point of the variable amplitude oil cylinder and the position of the stiffener. The overall structure is in line with the working requirements of the elevated crane. (2) the optimization analysis of the hinge point of the tower body is carried out by the simulation software, and the appropriate position of the hinge is selected to make the tower body in the force of the structure and the operation of the whole machine. It can be required to reach a more ideal state. (3) in order to reduce the weight of the whole machine and improve the performance of the whole machine, the boom structure uses high strength material HSM770 instead of ordinary steel to get better strength and stiffness. (4) the welding performance of high strength material is analyzed by test. The analysis results show that a certain amount of material is used. The measures and welding techniques can effectively ensure its welding performance and mechanical properties. (5) the whole machine is manufactured and the reliability of the structural design is verified through performance testing and quality testing. The high strength steel HSM770 has good welding performance and is suitable for the development of elevated crane products.
【學位授予單位】：華南理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U653.921

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