移動式救援升降梯設計及仿真研究
本文選題:救援 + 校核。 參考:《吉林大學》2012年碩士論文
【摘要】:近幾年來,隨著社會的發(fā)展,船閘、橋梁、港口、碼頭、水庫、電站等大型地下場所迅速發(fā)展起來。鑒于地下建筑的特殊性,導致其發(fā)生火災后所面臨的形勢異常嚴峻,如果搶險救援工作不當,將會造成非常嚴重的后果。 針對三峽船閘救援工作的特點,結合其它救援場合,本文首先提出了三套移動式升降梯的整體設計方案。通過認真比對每套方案的優(yōu)缺點,最終確定了最優(yōu)方案。它應用常用電梯的基本原理,采取3段可以伸縮的直立式電梯相互連接的創(chuàng)新思想,將電梯由傳統的傾斜式變成直立式,增加了救援深度,節(jié)省了工作空間,具有快速安全、可靠方便的特點。 在完成最終方案選擇后,進行了詳細的結構設計,并對關鍵部件進行了受力分析和校核計算,為各組件的準確選型提供了依據。 為了使設計更為可靠合理,本文在結構設計的基礎上采用有限元分析軟件ANSYS,通過建模功能強大的Pro/E軟件進行建模導入,根據一些基本的假設(模型的簡化、力和邊界條件的簡化等),計算出了梯架在工作狀態(tài)承載情況下的應力和變形,檢驗了設備強度和剛度是否滿足要求。 本文最后利用動力學仿真軟件ADAMS建立了變幅機構的仿真模型,對龍門架翻轉過程進行了動力學仿真,在此基礎上應用ADAMS優(yōu)化模塊,設置合理變量參數和目標函數,采用非線性二次規(guī)劃計算方法,進行了優(yōu)化設計研究。結果表明:優(yōu)化后的絞點位置改善了油缸的受力狀況,縮短了油缸最大伸長長度,提高了裝置整體穩(wěn)定性能。 通過本文的研究,基本解決了移動式深度救援升降梯在設計生產過程中的主要問題,,為該設備的研究提供了一種全新的研究分析方法,也為深度救援設備以后的發(fā)展提供了一個參考方向。
[Abstract]:In recent years, with the development of society, large underground places such as lock, bridge, port, wharf, reservoir and power station have developed rapidly.In view of the particularity of underground building, the situation it faces after fire is very serious. If the rescue work is not proper, it will cause very serious consequences.According to the characteristics of the rescue work of the three Gorges ship lock and other rescue occasions, this paper first puts forward three sets of overall design scheme of the mobile elevator.By carefully comparing the merits and demerits of each set of schemes, the optimal scheme is finally determined.It applies the basic principle of common elevators and adopts the innovative idea of connecting each other with three sections of vertical elevators which can be telescoped. The elevator is changed from the traditional inclined type to the vertical type, which increases the rescue depth, saves the working space, and is fast and safe.The characteristic of being reliable and convenient.After the final scheme selection is completed, detailed structural design is carried out, and the stress analysis and checking calculation of the key components are carried out, which provides the basis for the accurate selection of each component.In order to make the design more reliable and reasonable, the finite element analysis software ANSYSand the powerful modeling software Pro/E are used in this paper. According to some basic assumptions (simplification of the model),The stress and deformation of the ladder frame under the condition of working load are calculated, and the strength and stiffness of the equipment are tested to meet the requirements.In the end, the simulation model of the amplitude change mechanism is established by using the dynamic simulation software ADAMS, and the dynamic simulation of the gantry frame turnover process is carried out. On this basis, the reasonable variable parameters and the objective function are set up by using the ADAMS optimization module.The optimization design is studied by using nonlinear quadratic programming method.The results show that the optimized point position improves the stress condition of the cylinder, shortens the maximum elongation length of the cylinder, and improves the overall stability of the device.Through the research in this paper, the main problems in the design and production of the mobile deep relief elevator are basically solved, which provides a new research and analysis method for the research of the equipment.It also provides a reference for the future development of deep rescue equipment.
【學位授予單位】:吉林大學
【學位級別】:碩士
【學位授予年份】:2012
【分類號】:TH21;X924.4
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