本文選題：擺式飛剪　切入點(diǎn)：曲軸　出處：《武漢科技大學(xué)》2015年碩士論文

【摘要】：薄板坯連鑄連軋技術(shù)是鋼鐵生產(chǎn)工業(yè)近年來(lái)最重要的技術(shù)進(jìn)步之一，擺式飛剪是連鑄連軋生產(chǎn)線上的重要設(shè)備，其主要功能是對(duì)鑄坯進(jìn)行切頭切尾以及將鑄坯剪切成要求的定尺長(zhǎng)度。擺剪系統(tǒng)的正常運(yùn)行與否極大地影響著生產(chǎn)線的生產(chǎn)作業(yè)，因此，對(duì)擺式飛剪進(jìn)行動(dòng)力學(xué)分析并評(píng)估擺剪的整體性能有著重要的理論指導(dǎo)意義和實(shí)際應(yīng)用價(jià)值。 本文以某鋼廠連鑄坯生產(chǎn)線擺式飛剪為研究對(duì)象，對(duì)其機(jī)構(gòu)原理進(jìn)行了介紹，分析了頂剪故障產(chǎn)生的原因，運(yùn)用剛?cè)狁詈舷到y(tǒng)動(dòng)力學(xué)技術(shù)，對(duì)擺剪工作過(guò)程進(jìn)行仿真，重點(diǎn)研究了曲軸以及擺動(dòng)框架兩個(gè)關(guān)鍵零部件，具體研究了以下內(nèi)容：對(duì)擺剪進(jìn)行多剛體動(dòng)力學(xué)仿真分析，得到主要構(gòu)件的運(yùn)動(dòng)軌跡和速度曲線；分別把曲軸和擺動(dòng)框架作為柔性體，對(duì)擺剪剪切動(dòng)作進(jìn)行剛?cè)狁詈蟿?dòng)力學(xué)仿真分析，，得出擺剪各關(guān)鍵連接處的受力以及柔性體的應(yīng)力和應(yīng)變；同時(shí)把曲軸和擺動(dòng)框架作為柔性體對(duì)擺剪進(jìn)行動(dòng)態(tài)仿真分析，得到柔性體的應(yīng)力、變形狀況以及各連接處的受力；以最大設(shè)計(jì)剪切力作為載荷進(jìn)行仿真分析，考察系統(tǒng)的承載能力。仿真結(jié)果表明，擺剪系統(tǒng)承載能力良好，曲軸以及擺動(dòng)框架的強(qiáng)度和剛度滿足生產(chǎn)需求，曲軸和擺動(dòng)框架是否作為柔性體會(huì)在一定程度上影響各自的應(yīng)力狀況以及系統(tǒng)其他部件的受力。本文的研究工作對(duì)擺剪的設(shè)計(jì)、改造及維護(hù)有著較大的指導(dǎo)意義。
[Abstract]:Thin slab continuous casting and rolling technology is one of the most important technological advances in iron and steel production industry in recent years, and tilting flying shear is an important equipment in continuous casting and rolling production line.Its main function is to cut the head and tail of the billet and to cut the billet into the required length.The normal operation of the pendulum shear system greatly affects the production of the production line, so it is of great theoretical significance and practical application value to analyze the dynamics of the pendulum shear and evaluate the overall performance of the pendulum shear.In this paper, the tilting flying shear of a continuous casting billet production line in a steel plant is taken as the research object, the mechanism principle is introduced, the causes of the failure of top shear are analyzed, and the working process of pendulum shear is simulated by using rigid-flexible coupling system dynamics technology.Two key parts of crankshaft and swing frame are studied emphatically. The following contents are studied in detail: the kinematic trajectory and velocity curve of the main components are obtained by dynamic simulation analysis of the pendulum shear;At the same time, the crankshaft and swing frame are used as flexible body to simulate and analyze the pendulum shear, the stress and deformation of the flexible body and the stress at the joint are obtained, and the maximum design shear force is taken as the load to simulate and analyze.Investigate the bearing capacity of the system.The simulation results show that the bearing capacity of the shearing system is good, and the strength and stiffness of the crankshaft and the swing frame meet the production requirements.Whether the crankshaft and the swing frame are flexible will influence the stress condition of each other and the force of other parts of the system to a certain extent.The research work in this paper is of great significance to the design, renovation and maintenance of pendulum shear.
【學(xué)位授予單位】：武漢科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TG333.21

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