【摘要】：混凝土泵車目前是土建工地現(xiàn)場(chǎng)混凝土澆注中不可或缺的機(jī)械設(shè)備,是一種通過液壓系統(tǒng)帶動(dòng)多節(jié)可折疊的臂架旋轉(zhuǎn),同時(shí)臂架帶動(dòng)輸料管運(yùn)動(dòng),可以連續(xù)均勻地泵送混凝土到指定位置進(jìn)行澆注的專用車型。 文章主要以混凝土泵車的核心部件臂架系統(tǒng)為研究對(duì)象,以多體動(dòng)力學(xué)理論、參數(shù)化分析、優(yōu)化設(shè)計(jì)等理論為基礎(chǔ),對(duì)臂架系統(tǒng)剛性和柔性兩種模型分別進(jìn)行運(yùn)動(dòng)學(xué)、動(dòng)力學(xué)分析；利用柔性模型,對(duì)變幅機(jī)構(gòu)中受力影響較大的鉸點(diǎn)位置進(jìn)行優(yōu)化,降低油缸最大受力；對(duì)優(yōu)化后臂架系統(tǒng)進(jìn)行強(qiáng)度分析,并結(jié)合動(dòng)應(yīng)力試驗(yàn)加以驗(yàn)證。 1.通過Pro/E、ANSYS與ADAMS三種軟件的聯(lián)合應(yīng)用,建立了臂架系統(tǒng)剛性模型和剛?cè)狁詈夏Ｐ?對(duì)兩種模型進(jìn)行動(dòng)力學(xué)仿真和結(jié)果比較,發(fā)現(xiàn)后者更符合臂架系統(tǒng)工作的實(shí)際情況,為臂架系統(tǒng)進(jìn)一步分析奠定基礎(chǔ)。 2.基于臂架剛?cè)狁詈夏Ｐ?利用ADAMS的優(yōu)化模塊對(duì)變幅機(jī)構(gòu)油缸受力進(jìn)行研究。建立了臂架系統(tǒng)參數(shù)化模型,對(duì)靈敏度較高的幾個(gè)設(shè)計(jì)變量進(jìn)行了坐標(biāo)優(yōu)化,達(dá)到了油缸最大受力明顯降低的效果。 3.對(duì)臂架模型進(jìn)行仿真,輸出仿真時(shí)間內(nèi)臂架的動(dòng)載荷到有限元軟件中,對(duì)臂架系統(tǒng)進(jìn)行了強(qiáng)度分析,并通過動(dòng)應(yīng)力試驗(yàn)對(duì)有限元分析結(jié)果加以驗(yàn)證。
[Abstract]:At present, the concrete pump car is an indispensable mechanical device in the concrete pouring on the site of a civil construction site. It is a kind of folding arm rotation driven by hydraulic system, and at the same time, the boom can drive the movement of the feeding pipe. Can continuously and uniformly pump concrete to the designated location for pouring special vehicle. Based on the theory of multi-body dynamics, parameterized analysis and optimization design, the rigid and flexible models of the boom system are studied in this paper. Dynamic analysis; the flexible model is used to optimize the hinge position of the luffing mechanism, to reduce the maximum force of the cylinder, and the strength of the optimized boom system is analyzed and verified by the dynamic stress test. 1. Through the joint application of Pro/E,ANSYS and ADAMS, the rigid model and the rigid-flexible coupling model of the boom system are established. The dynamic simulation of the two models and the comparison of the results show that the latter model is more in line with the actual situation of the boom system. Lay the foundation for further analysis of arm system. 2. Based on the rigid-flexible coupling model of the arm frame, the stress of the oil cylinder of the luffing mechanism is studied by using the optimization module of ADAMS. The parameterized model of the boom system is established, and the coordinate optimization of several design variables with high sensitivity is carried out, which achieves the effect that the maximum force of the cylinder is obviously reduced. The model of boom is simulated and the dynamic load of boom is outputted into finite element software. The strength of boom system is analyzed and the results of finite element analysis are verified by dynamic stress test.
【學(xué)位授予單位】：揚(yáng)州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU646

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