本文關(guān)鍵詞：門座起重機彈性臂架系統(tǒng)協(xié)同優(yōu)化與動態(tài)特性研究　出處：《太原科技大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

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【摘要】：隨著國際貿(mào)易的迅速發(fā)展，各類港口起重機的需求量不斷增加，促使起重機朝著起重量大型化、自重輕型化、速度快捷化、裝卸高效化的方向發(fā)展。門座起重機具有作業(yè)靈活便捷、裝卸貨物適應(yīng)性廣等優(yōu)點，是大型港口必備的裝卸機械，發(fā)揮著不可替代的作用。國際物流加速的同時，對起重機的設(shè)計制造水平與作業(yè)效率要求也越來越高。 四連桿臂架門座起重機具有較高作業(yè)效率，，是大型混裝船裝卸采用的最常用設(shè)備，其四連桿臂架系統(tǒng)性能的優(yōu)劣在很大程度上決定了整機的使用性能。對臂架系統(tǒng)的主要結(jié)構(gòu)尺寸進(jìn)行優(yōu)化設(shè)計，也是門座起重機整體設(shè)計的重要環(huán)節(jié)，其優(yōu)劣還決定性地影響整機的工作可靠性和經(jīng)濟性。 本文以起重量25t、工作幅度9.5~33m的一臺門座起重機的四連桿臂架系統(tǒng)作為研究對象，將臂架系統(tǒng)視為彈性體，對臂架系統(tǒng)進(jìn)行構(gòu)件尺寸優(yōu)化；并對其進(jìn)行變幅作業(yè)運動學(xué)與動力學(xué)仿真，從而獲得彈性變幅軌跡，驗證了基于彈性的系統(tǒng)優(yōu)化結(jié)果，使載重變幅時貨物更接近水平平移，工作更平穩(wěn)、更節(jié)能、構(gòu)件構(gòu)造更合理，作業(yè)安全可靠。 本論文的主要內(nèi)容有： （1）將四連桿組合臂架系統(tǒng)視為彈性體，以有限元法與結(jié)構(gòu)力學(xué)為理論基礎(chǔ)，實現(xiàn)臂架系統(tǒng)的各個桿件尺寸的協(xié)同優(yōu)化。 （2）分別將臂架系統(tǒng)作為剛體與彈性體，以多體動力學(xué)作為理論基礎(chǔ)，對臂架系統(tǒng)在貨物滿載的情況下進(jìn)行仿真分析，分析兩種模型對應(yīng)結(jié)果的差異。 （3）將臂架系統(tǒng)的優(yōu)化結(jié)果與仿真結(jié)果進(jìn)行比較，驗證優(yōu)化結(jié)果的正確性。
[Abstract]:With the rapid development of international trade, the demand of all kinds of port cranes is increasing, which urges the cranes to become large, lightweight and fast. The gantry crane has the advantages of flexible and convenient operation, wide adaptability of loading and unloading, and is the necessary loading and unloading machinery in large port. With the acceleration of international logistics, the level of crane design and manufacturing and the efficiency of operation are becoming more and more important. The four-link jib gantry crane is the most commonly used equipment for large mixed loading and unloading because of its high working efficiency. The performance of the four-link boom system determines the performance of the whole machine to a great extent. The optimization design of the main structural dimensions of the boom system is also an important link in the overall design of portal crane. Its advantages and disadvantages also determinedly affect the reliability and economy of the whole machine. In this paper, the four-bar boom system of a portal crane with lifting weight of 25t and working range of 9.533m is taken as the research object. The jib system is regarded as an elastic body, and the size of the jib system is optimized. The kinematics and dynamics simulation is carried out to obtain the elastic amplitude shift trajectory, which verifies the system optimization results based on elasticity, which makes the cargo more close to horizontal translation and more stable when the load varies. More energy saving, more reasonable structure of components, safe and reliable operation. The main contents of this thesis are as follows: 1) the four-bar combined boom system is regarded as an elastic body. Based on the theory of finite element method and structural mechanics, the cooperative optimization of the dimensions of each member of the boom system is realized. 2) the boom system is regarded as rigid body and elastic body, and the multi-body dynamics is taken as the theoretical basis, and the simulation analysis of the boom system under the condition of full load of goods is carried out, and the difference of corresponding results between the two models is analyzed. The optimization results of the boom system are compared with the simulation results to verify the correctness of the optimization results.
【學(xué)位授予單位】：太原科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH213.4

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本文編號：1431911