本文關(guān)鍵詞：反鏟液壓挖掘機(jī)工作裝置結(jié)構(gòu)與性能一體化設(shè)計(jì)研究　出處：《重慶大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 反鏟液壓挖掘機(jī) 工作裝置 強(qiáng)度分析 結(jié)構(gòu)性能一體優(yōu)化 優(yōu)化設(shè)計(jì)

【摘要】：液壓挖掘機(jī)是一種非常重要的和常用的施工機(jī)械，它在采礦、道路建設(shè)、國防建設(shè)、農(nóng)業(yè)灌溉和其他土方施工中占有十分重要的地位。隨著我國在建設(shè)基礎(chǔ)設(shè)施上的投資不斷增加，挖掘機(jī)在國家的現(xiàn)代化建設(shè)中扮演著越來越重要的角色。所以，重視挖掘機(jī)的發(fā)展，加快挖掘機(jī)的創(chuàng)新，不斷提高產(chǎn)品質(zhì)量，對國家的現(xiàn)代化建設(shè)有著重要的意義。 工作裝置是液壓挖掘機(jī)的重要組成部分，工作裝置的質(zhì)量極大的影響整機(jī)的質(zhì)量。所以對工作裝置的強(qiáng)度分析及優(yōu)化設(shè)計(jì)將直接影響到液壓挖掘機(jī)的可靠性、安全性和工作性能。 針對用有限元軟件分析結(jié)構(gòu)強(qiáng)度不便于實(shí)現(xiàn)結(jié)構(gòu)優(yōu)化自動循環(huán)的局限性及液壓挖掘機(jī)性能優(yōu)化的復(fù)雜性，本文提出對反鏟液壓挖掘工作裝置結(jié)構(gòu)與性能一體優(yōu)化的研究。本課題主要的研究工作包含如下幾個(gè)方面： ①分析總結(jié)了反鏟液壓挖掘機(jī)工作裝置的結(jié)構(gòu)形式和挖掘特點(diǎn)；通過運(yùn)動分析，建立了挖掘機(jī)工作裝置的運(yùn)動學(xué)模型及力學(xué)模型，求解了工作裝置上各個(gè)鉸點(diǎn)的位置坐標(biāo)及理論挖掘力；最終完成了在考慮偏載和側(cè)向力的工況下對各個(gè)鉸點(diǎn)的受力分析。 ②運(yùn)用材料力學(xué)的方法，利用VB編制液壓挖掘機(jī)工作裝置強(qiáng)度分析軟件，，通過軟件可以求出動臂和斗桿各個(gè)截面的最大應(yīng)力；然后通過實(shí)例分析，分別用自編軟件計(jì)算動臂、斗桿的強(qiáng)度與有限元分析的強(qiáng)度對比。分析對比結(jié)果，自編軟件計(jì)算的結(jié)構(gòu)強(qiáng)度與商用有限元軟件分析結(jié)果一致。 ③在驗(yàn)證了自編程序分析工作裝置強(qiáng)度正確性的基礎(chǔ)上，通過現(xiàn)代設(shè)計(jì)優(yōu)化方法，以動臂和斗桿的質(zhì)量最輕為優(yōu)化目標(biāo)，其結(jié)構(gòu)參數(shù)作為設(shè)計(jì)變量，再以其強(qiáng)度不降低為約束條件對動臂和斗桿進(jìn)行結(jié)構(gòu)優(yōu)化，并利用VB編制優(yōu)化程序。通過實(shí)例優(yōu)化設(shè)計(jì)，將優(yōu)化前與優(yōu)化后的結(jié)果對比。分析對比結(jié)果，優(yōu)化后動臂和斗桿的質(zhì)量減輕。 ④以降低工作裝置質(zhì)量同時(shí)提高挖掘性能為優(yōu)化目標(biāo)，在工作裝置結(jié)構(gòu)優(yōu)化的基礎(chǔ)上，結(jié)合原有的液壓挖掘機(jī)性能優(yōu)化軟件進(jìn)行多目標(biāo)組合優(yōu)化。并利用VB編制液壓挖掘機(jī)結(jié)構(gòu)與性能一體優(yōu)化軟件，最后通過實(shí)例分析優(yōu)化，對比優(yōu)化前與優(yōu)化后的結(jié)果。分析對比結(jié)果，優(yōu)化后動臂和斗桿的質(zhì)量減輕；挖掘機(jī)的挖掘性能提高。
[Abstract]:Hydraulic excavator is a very important and common construction machinery , it plays a very important role in mining , road construction , national defense construction , agricultural irrigation and other earthwork construction . As our country ' s investment in construction infrastructure increases continuously , the excavator plays a more and more important role in the modernization construction of the country . Therefore , it is of great significance to the development of the excavator , to speed up the innovation of the excavator , to improve the quality of the product and to improve the modernization of the country . The working device is an important part of the hydraulic excavator , and the quality of the working device greatly affects the quality of the whole machine . Therefore , the strength analysis and optimization design of the working device will directly affect the reliability , safety and working performance of the hydraulic excavator . Aiming at the limitation of structural optimization automatic cycle and the complexity of performance optimization of hydraulic excavator by using finite element software , this paper puts forward a study on the optimization of structure and performance of hydraulic excavator . The main research work includes the following aspects : The structural form and the mining characteristics of the working device of the back - shovel hydraulic excavator are analyzed and summarized ; the kinematics model and the mechanical model of the working device of the excavator are established through the motion analysis ; the position coordinates and the theoretical digging force of each hinge point on the working device are solved ; and the stress analysis of each hinge point is finished under the condition of considering the partial load and the lateral force . ( 2 ) Using the method of material mechanics , using VB to compile the strength analysis software of the working device of the hydraulic excavator , the maximum stress of each section of the movable arm and the bucket rod can be determined through the software ; and then , the strength of the bucket rod and the strength of the finite element analysis are calculated by using the self - compiled software . The comparison result is analyzed , and the structural strength calculated by the self - compiled software is consistent with the analysis result of the commercial finite element software . ( 3 ) On the basis of verifying the correctness of the strength of the self - compiled program analysis work device , the optimization objective is optimized by modern design optimization method . The structural parameters of the movable arm and the bucket rod are optimized as design variables , and the optimization program is worked out by using VB . Through the instance optimization design , the optimization is compared with the optimized result . The comparison result is analyzed , and the quality of the rear boom and the bucket rod is optimized . in ord to reduce that quality of the work device and improve the mining performance as the optimization objective , the optimization of the multi - objective combination is carried out on the basis of the optimization of the work device structure , and the optimization software of the structure and performance of the hydraulic excavator is developed by using VB , and finally , the optimization is optimized through an example , the quality of the rear boom and the bucket rod is optimized , and the digging performance of the excavator is improved .

【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU621

【參考文獻(xiàn)】

相關(guān)期刊論文 前9條

1 何允紀(jì),李濱城,崔紅;液壓挖掘機(jī)反鏟工作裝置的優(yōu)化設(shè)計(jì)[J];工程機(jī)械;1994年06期

2 周勇;宋春華;;國內(nèi)外液壓挖掘機(jī)的發(fā)展動向[J];礦山機(jī)械;2008年08期

3 程商;國外挖掘機(jī)目前水平及發(fā)展動向[J];農(nóng)機(jī)市場;2004年05期

4 遲永濱,李仕新,杜群貴;挖掘機(jī)反鏟裝置優(yōu)化設(shè)計(jì)的方法與策略[J];太原重型機(jī)械學(xué)院學(xué)報(bào);2003年01期

5 陳燕,吳曉光,王政;液壓挖掘機(jī)工作裝置仿真研究[J];三峽大學(xué)學(xué)報(bào)(自然科學(xué)版);2001年05期

6 薛淵;呂廣明;陸念力;;復(fù)合形法在液壓挖掘機(jī)鏟斗連桿機(jī)構(gòu)優(yōu)化設(shè)計(jì)中的應(yīng)用[J];現(xiàn)代制造工程;2006年03期

7 丁華,朱茂桃,趙剡水;液壓挖掘機(jī)動臂的有限元分析[J];中國公路學(xué)報(bào);2003年04期

8 張啟君,劉偉;國內(nèi)挖掘機(jī)行業(yè)發(fā)展的探討[J];筑路機(jī)械與施工機(jī)械化;2005年02期

9 高琳;;機(jī)械優(yōu)化設(shè)計(jì)方法綜述[J];科技創(chuàng)新導(dǎo)報(bào);2010年30期

本文編號：1424720