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  本文關(guān)鍵詞： 高空作業(yè)平臺 上車 虛擬樣機 臂架 回轉(zhuǎn)臺　出處：《湖南大學(xué)》2011年碩士論文　論文類型：學(xué)位論文

【摘要】：高空作業(yè)平臺廣泛用于船舶、市政建設(shè)、消防、港口貨運、建筑、物流等作業(yè)。高空作業(yè)平臺是載人高空作業(yè)機器,用于運送工作人員和使用器材到指定高度進(jìn)行作業(yè)的特種機器,其設(shè)計也較一般機器有更高的要求。因此,有必要對高空作業(yè)平臺上車的受力及結(jié)構(gòu)可靠性進(jìn)行分析。本文以某新型25米直臂高空作業(yè)平臺上車為研究對象,分析了其工況、建立其理論模型和虛擬樣機,并進(jìn)行了運動仿真分析,進(jìn)而根據(jù)仿真結(jié)果對上車主要結(jié)構(gòu)進(jìn)行了強度和屈曲性能分析。論文具體內(nèi)容有: (1)介紹了選題的背景和意義,闡述了國內(nèi)外高空作業(yè)平臺的發(fā)展現(xiàn)狀和直臂式高空作業(yè)平臺上車的研究現(xiàn)狀。 (2)根據(jù)高空作業(yè)平臺的作業(yè)范圍,分析了上車的作業(yè)工況,建立了變幅機構(gòu)、調(diào)平機構(gòu)、臂架的運動數(shù)學(xué)模型,建立了高空作業(yè)平臺上車的力學(xué)模型,并采用MATLAB軟件計算出偏載荷時上車的理論受力。 (3)采用變幅油缸和調(diào)平油缸長度間的數(shù)學(xué)關(guān)系施加驅(qū)動約束,較好地實現(xiàn)了調(diào)平機構(gòu)的調(diào)平功能,使得工作平臺保持水平狀態(tài)。建立上車的虛擬樣機,分析出了該高空作業(yè)平臺臂架在各工況下的受力,并與理論計算結(jié)果進(jìn)行了比較分析。結(jié)果表明,高空作業(yè)平臺上車的虛擬樣機是可靠的。采用此虛擬樣機,并考慮摩擦因素后,仿真出了考慮摩擦力后的各工況臂架受力。 (4)根據(jù)運動仿真結(jié)果,分析出了臂架和回轉(zhuǎn)平臺的惡劣工況;根據(jù)國際標(biāo)準(zhǔn)和澳大利亞標(biāo)準(zhǔn),計算了臂架的風(fēng)載荷和回轉(zhuǎn)平面的慣性載荷;在ANSYS Workbench環(huán)境中,建立了臂架和回轉(zhuǎn)平臺的有限元模型,并分析了臂架和回轉(zhuǎn)平臺在惡劣工況時的強度、剛度和屈曲性能,而且根據(jù)分析結(jié)果對回轉(zhuǎn)平臺的結(jié)構(gòu)作了改進(jìn),以滿足澳大利亞標(biāo)準(zhǔn)要求。
[Abstract]:Aerial work platform is widely used in ship, municipal construction, fire fighting, port freight, construction, logistics and other operations. Special machines used to transport staff and use equipment to work at specified heights are also designed to be more demanding than general machines. It is necessary to analyze the force and structural reliability of the vehicle mounted on the aerial work platform. This paper takes a new type of aerial platform with a 25m straight arm as the research object, analyzes its working conditions, establishes its theoretical model and virtual prototype. Based on the simulation results, the strength and buckling performance of the main structures are analyzed. The main contents of this paper are as follows:. This paper introduces the background and significance of the topic, expounds the development status of aerial work platform at home and abroad and the research status of vertical arm aerial work platform. 2) according to the working range of the aerial work platform, this paper analyzes the working conditions of the boarding, establishes the mathematical model of the motion of the luffing mechanism, the leveling mechanism and the arm frame, and establishes the mechanical model of the vehicle mounted on the aerial work platform. MATLAB software is used to calculate the theoretical forces on the train under partial load. 3) the driving constraint is imposed by the mathematical relation between the variable amplitude oil cylinder and the leveling cylinder length, the leveling function of the leveling mechanism is well realized, and the working platform is kept in a horizontal state, and a virtual prototype on the train is set up. The force acting on the boom of the platform is analyzed and compared with the theoretical calculation results. The results show that the virtual prototype of the platform is reliable, and the virtual prototype is used. After considering the friction factors, the load of the boom under different working conditions is simulated. 4) according to the result of motion simulation, the bad working conditions of boom and rotary platform are analyzed, the wind load and inertial load of rotary plane are calculated according to international standard and Australian standard, and in the environment of ANSYS Workbench, the wind load and inertial load of rotary plane are calculated. The finite element model of boom and rotary platform is established, and the strength, stiffness and buckling performance of boom and rotary platform under bad working conditions are analyzed, and the structure of rotary platform is improved according to the analysis results. To meet Australian standards.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH211.6

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本文編號：1536000