本文選題：反共振 + 振動篩　； 參考：《東北大學(xué)》2011年碩士論文

【摘要】：振動機(jī)械在國民經(jīng)濟(jì)的許多領(lǐng)域如采礦、冶金等部門得到了廣泛的應(yīng)用,隨著我國經(jīng)濟(jì)發(fā)展方向朝向節(jié)能低碳方向的發(fā)展,一些傳統(tǒng)的高耗能的振動機(jī)械急需得到改進(jìn)。反共振振動機(jī)械由于其自身存在壽命高、低耗能、噪聲小等優(yōu)點(diǎn),越來越受到人們的重視。本文利用反共振振動理論設(shè)計(jì)一種大型的反共振振動篩分機(jī)械用于生產(chǎn)實(shí)踐。 反共振振動機(jī)分為原點(diǎn)反共振和跨點(diǎn)反共振,其中跨點(diǎn)反共振有兩種結(jié)構(gòu)形式,本文選用原點(diǎn)反共振振動機(jī)結(jié)構(gòu)形式進(jìn)行振動篩的設(shè)計(jì)。對隔振系統(tǒng)的板彈簧和圓柱螺旋彈簧分別設(shè)計(jì)并校核。 根據(jù)傳統(tǒng)振動篩的結(jié)構(gòu)特征,利用PRO/E軟件對反共振振動篩進(jìn)行三維設(shè)計(jì),設(shè)計(jì)振動篩的篩箱結(jié)構(gòu)方案,并同時(shí)設(shè)計(jì)兩種反共振體結(jié)構(gòu)方案,對反共振體方案一和反共振體方案二進(jìn)行比較分析。對激振器進(jìn)行裝配設(shè)計(jì),同時(shí)對方案一和方案二整體結(jié)構(gòu)進(jìn)行裝配設(shè)計(jì),計(jì)算各個(gè)部分的質(zhì)量,檢查模型是否存在干涉。 三維設(shè)計(jì)完成之后,利用有限元方法對振動篩進(jìn)行分析仿真,分別對篩箱進(jìn)行模態(tài)分析得到剛度情況和靜力分析得到結(jié)構(gòu)的強(qiáng)度情況,檢驗(yàn)實(shí)際強(qiáng)度和剛度是否滿足工作要求,對篩箱結(jié)構(gòu)進(jìn)行改進(jìn)加強(qiáng)。然后分別對反共振體方案一和反共振體方案二進(jìn)行模態(tài)分析和靜力分析,從強(qiáng)度和剛度情況考慮選擇合適的反共振體結(jié)構(gòu)方案,并對不合理結(jié)構(gòu)進(jìn)行改進(jìn)。最終確定整個(gè)結(jié)構(gòu)方案,對整體結(jié)構(gòu)方案進(jìn)行靜力分析。對振動篩整體結(jié)構(gòu)進(jìn)行諧響應(yīng)分析,從而預(yù)測反共振狀態(tài)下的反共振點(diǎn)位置；設(shè)計(jì)振動篩的瞬態(tài)動力學(xué)分析方法,進(jìn)行簡諧力作用下的振動篩的瞬態(tài)分析,得到振動篩在動態(tài)情況下節(jié)點(diǎn)的應(yīng)力情況。 對所設(shè)計(jì)振動篩進(jìn)行工作性能預(yù)測,利用MATLAB軟件對振動篩的影響進(jìn)行仿真分析,包括物料變化對反共振點(diǎn)穩(wěn)定性的影響和激振力不通過質(zhì)心對振動篩工作的影響,得出振動篩在設(shè)計(jì)過程中對振動篩工作性能影響的因素及其影響規(guī)律。
[Abstract]:Vibration machinery has been widely used in many fields of the national economy, such as mining, metallurgy and so on. With the development of economy in our country towards the direction of energy saving and low carbon, some traditional vibration machinery with high energy consumption are in urgent need of improvement. Antiresonance vibration machinery has been paid more and more attention because of its long life, low energy consumption and low noise. In this paper, a large anti-resonance vibrating screen separation machine is designed by using anti-resonance vibration theory. Anti-resonance vibration machine is divided into origin antiresonance and cross-point antiresonance. There are two structural forms of cross-point antiresonance. In this paper, the structural form of origin antiresonance vibration machine is selected to design the vibrating screen. The plate spring and cylindrical helical spring of vibration isolation system are designed and checked separately. According to the structural characteristics of the traditional vibrating screen, the three-dimensional design of the anti-resonance vibrating screen is carried out by using PRO/E software, and the structural scheme of the screen box is designed, and two kinds of anti-resonance structure schemes are designed at the same time. The antiresonance scheme 1 and 2 are compared and analyzed. At the same time, the whole structure of scheme 1 and scheme 2 are designed, the quality of each part is calculated, and the interference of the model is checked. After the 3D design is finished, the vibration screen is analyzed and simulated by the finite element method. The stiffness of the screen box is obtained by modal analysis and the strength of the structure is obtained by static analysis, and the actual strength and stiffness are checked whether the actual strength and stiffness meet the working requirements. The structure of the screen box is improved and strengthened. Then the modal analysis and static analysis of antiresonance scheme 1 and antiresonance scheme 2 are carried out respectively. The appropriate antiresonance structure scheme is selected according to the strength and stiffness and the unreasonable structure is improved. Finally, the whole structure scheme is determined, and the static analysis of the whole structure scheme is carried out. The harmonic response of the whole structure of the vibrating screen is analyzed to predict the position of the antiresonance point, the transient dynamic analysis method of the vibrating screen is designed, and the transient analysis of the vibrating screen under the simple harmonic force is carried out. The stress of the joint of the vibrating screen under the dynamic condition is obtained. The working performance of the designed vibrating screen is predicted, and the influence of the material change on the stability of the anti-resonance point is simulated by using MATLAB software, and the effect of the exciting force on the work of the vibrating screen is not through the centroid of mass. The factors that affect the working performance of vibrating screen in the design process and its influence law are obtained.
【學(xué)位授予單位】：東北大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH237.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王軍輝;Pro/Engineer下裝配過程的仿真[J];兵工自動化;2002年02期

2 劉勁濤;劉杰;李小號;柳洪義;;反共振點(diǎn)位于兩共振點(diǎn)正中間的反共振機(jī)參數(shù)選擇[J];東北大學(xué)學(xué)報(bào)(自然科學(xué)版);2009年03期

3 劉杰，侯祥林;反共振理論在減振技術(shù)中的應(yīng)用[J];東北大學(xué)學(xué)報(bào);1994年04期

4 李濱慧;高洪波;趙波;肖冬;;反共振振動篩的振幅穩(wěn)定性控制[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào);2006年03期

5 黃志超;;多自由度反共振機(jī)械的模糊可靠性分析[J];華東交通大學(xué)學(xué)報(bào);2006年01期

6 黃志超，，廖志娟;反共振給料機(jī)的設(shè)計(jì)[J];機(jī)械設(shè)計(jì);1996年02期

7 劉杰;李允公;劉勁濤;徐會希;;基于振幅穩(wěn)定的原點(diǎn)反共振振動機(jī)動力學(xué)分析及其控制[J];機(jī)械工程學(xué)報(bào);2006年01期

8 高洪波;趙波;;反共振振動篩的動力學(xué)參數(shù)分析與優(yōu)化[J];遼寧省交通高等�？茖W(xué)校學(xué)報(bào);2005年04期

9 趙波;高洪波;;基于模糊自整定PID的原點(diǎn)反共振振動篩振幅控制[J];遼寧省交通高等專科學(xué)校學(xué)報(bào);2009年01期

10 韓運(yùn)俠;反共振現(xiàn)象及其應(yīng)用[J];洛陽師專學(xué)報(bào);1998年05期

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