本文選題：泥漿筑壩機(jī)研發(fā) + 機(jī)架模態(tài)分析��； 參考：《西安理工大學(xué)》2017年碩士論文

【摘要】：位于我國西北部的黃土高原地區(qū),生態(tài)環(huán)境惡劣,植被覆蓋率低,導(dǎo)致了水土資源的嚴(yán)重流失,治理黃土高原的水土流失問題便成為一個重要的課題。建設(shè)淤地壩是解決水土流失問題的一個重要方法,它能使水土環(huán)境得到有效的改善,阻絕了黃土高原的泥沙沿溝渠流入黃河,可實(shí)現(xiàn)環(huán)境與社會建設(shè)的友好發(fā)展。建設(shè)淤地壩的傳統(tǒng)方法有碾壓法和水墜法,其中水墜法的工藝簡單,施工方法便于掌握,得到的壩體有良好的屬性,且具有建造成本的優(yōu)勢,因而被廣泛推廣使用。但是,用水墜法建壩在壩址選擇方面有局限性,施工中人員的勞動強(qiáng)度大,工作環(huán)境差,施工安全系數(shù)低。為了解決水墜法建壩中存在的缺點(diǎn),實(shí)現(xiàn)淤地壩建設(shè)的機(jī)械化、自動化,泥漿泵筑壩就被提出來,為此需要開發(fā)一款適應(yīng)該方法發(fā)展的機(jī)械設(shè)備。本文結(jié)合了泥漿筑壩機(jī)的研制開發(fā),對泥漿筑壩機(jī)進(jìn)行了整機(jī)、關(guān)鍵零部件的特性分析及試驗(yàn)研究，，確保該機(jī)器能夠安全、高效、可靠的運(yùn)行。根據(jù)泥漿泵筑壩法的工藝對所痛機(jī)器提出的要求,設(shè)計(jì)開發(fā)了一種達(dá)到該要求的泥漿筑壩機(jī)，并提出了幾種設(shè)計(jì)方案并加以驗(yàn)證:利用Ansys Workbench有限元分析方法，對筑壩機(jī)的機(jī)架進(jìn)行了模態(tài)分析,獲得了固有頻率,固有振型,并依據(jù)分析結(jié)果對機(jī)架進(jìn)行了改進(jìn):分析了泥漿攪拌-輸送泵轉(zhuǎn)子的動態(tài)特性,得到了轉(zhuǎn)子的固有頻率、固有振型及臨界轉(zhuǎn)速等,設(shè)定合理的轉(zhuǎn)速范圍;通過試驗(yàn)分析各個設(shè)計(jì)方案優(yōu)劣,在試驗(yàn)中驗(yàn)證整機(jī)的固有頻率與分析得到結(jié)果之間的準(zhǔn)確性,并確定機(jī)器的使用參數(shù)。分析結(jié)果表明,泥漿筑壩機(jī)最終方案中機(jī)架的固有頻率分布離散,重點(diǎn)區(qū)間內(nèi)固有頻率較少,模態(tài)耦合發(fā)生的可能性較低,各階頻率所對應(yīng)的模態(tài)振型表現(xiàn)為擺動或彎曲，但主要結(jié)構(gòu)并未受影響,第四階模態(tài)固有頻率為28.13Hz、第五階固有頻率為29.99Hz較為接近，所設(shè)定轉(zhuǎn)子轉(zhuǎn)速可避開該段頻率:泥漿攪拌-輸送泵轉(zhuǎn)子的設(shè)定轉(zhuǎn)速低于臨界轉(zhuǎn)速,滿足與臨界轉(zhuǎn)速余量的要求。試驗(yàn)觀察分析結(jié)果表明,采用直線往復(fù)式振動篩,結(jié)構(gòu)簡單，工作過程平穩(wěn):采用螺旋-渦旋復(fù)合泵可實(shí)現(xiàn)高濃度、大流量泥漿的輸送,是一種較為理想的泥漿輸送泵。
[Abstract]:The poor ecological environment and low vegetation coverage in the Loess Plateau in the northwestern part of China lead to the serious loss of soil and water resources. Therefore, it is an important task to control the soil and water loss in the Loess Plateau. The construction of silt dam is an important method to solve the problem of soil and water loss. It can effectively improve the soil and water environment, prevent sediment from flowing into the Yellow River along the channel of the Loess Plateau, and realize the friendly development of environmental and social construction. The traditional methods of building silt dam include roller compaction method and water drop method, among which the water drop method is simple, the construction method is easy to grasp, the obtained dam body has good properties and has the advantage of construction cost, so it is widely used. However, there are some limitations in dam construction with water drop method, such as large labor intensity, poor working environment and low construction safety coefficient. In order to solve the shortcomings of water drop method in dam construction and realize mechanization and automation of silt dam construction, mud pump dam construction is proposed. Therefore, it is necessary to develop a mechanical equipment suitable for the development of this method. Combined with the research and development of mud dam construction machine, this paper has carried on the characteristic analysis and experimental research of the mud dam construction machine, key parts and components, to ensure that the machine can operate safely, efficiently and reliably. According to the requirements of the mud pump damming process to the machine, a mud dam construction machine is designed and developed, and several design schemes are put forward and verified: using Ansys Workbench finite element analysis method, The modal analysis of the frame of the dam building machine is carried out, and the natural frequency and the natural mode are obtained. According to the results of the analysis, the frame is improved. The dynamic characteristics of the rotor of the slurry stirring and conveying pump are analyzed, and the natural frequency of the rotor is obtained. The proper range of rotational speed is set for the natural mode and critical speed. The accuracy between the natural frequency of the whole machine and the analysis results is verified in the experiment by analyzing the merits and demerits of each design scheme and the operating parameters of the machine are determined. The analysis results show that the natural frequency distribution of the frame is discrete, the natural frequency is less in the key section, the possibility of modal coupling is low, and the modal modes corresponding to each order frequency are oscillating or bending. But the main structure is not affected, the fourth mode natural frequency is 28.13 Hz, the fifth natural frequency is 29.99Hz is close, the rotor speed can avoid this frequency: the set speed of the slurry agitation-conveying pump rotor is lower than the critical speed. Meet the requirements of critical speed margin. The experimental results show that the linear reciprocating vibrating screen is simple in structure and stable in working process. High concentration and high flow rate of mud can be realized by using helico-vortex compound pump, so it is an ideal mud conveying pump.
【學(xué)位授予單位】：西安理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TV53

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉選偉;金亮;王景立;;基于ANSYS Workbench的深松機(jī)機(jī)架模態(tài)分析[J];農(nóng)機(jī)化研究;2015年05期

2 郭昌進(jìn);楊喜;王金麗;鄭勇;覃雙眉;;基于ANSYS Workbench的甘蔗葉粉碎機(jī)機(jī)架模態(tài)分析[J];農(nóng)機(jī)化研究;2014年08期

3 牛曉敏;夏亞濤;;有限元方法應(yīng)用研究現(xiàn)狀[J];科技致富向?qū)?2013年23期

4 劉震;;全國水土保持情況普查及成果運(yùn)用[J];中國水利;2013年07期

5 李耀明;孫朋朋;龐靖;徐立章;;聯(lián)合收獲機(jī)底盤機(jī)架有限元模態(tài)分析與試驗(yàn)[J];農(nóng)業(yè)工程學(xué)報(bào);2013年03期

6 Muhammad Adnan;SUN Bing;ZHANG Jian-wei;Sarosh Ali;;An iterative approach for modal analysis of solid rocket motor incorporating frequency dependent modulus[J];航空動力學(xué)報(bào);2013年02期

7 楊秀秀;;大型直線篩結(jié)構(gòu)應(yīng)力分布特點(diǎn)的數(shù)值模擬分析[J];選煤技術(shù);2012年06期

8 蘆杰豐;朱首軍;王盼;楊鋒;;泥漿泵法筑壩中摻和物對泥漿排水的影響[J];西北林學(xué)院學(xué)報(bào);2012年05期

9 沈惠平;王新翔;鄧嘉鳴;何寶祥;楊廷力;;并聯(lián)振動篩與直線篩篩分效果的試驗(yàn)比較研究[J];礦山機(jī)械;2012年05期

10 龔建政;鐘芳明;賀星;湯華濤;;利用ANSYS和坎貝爾圖對燃?xì)廨啓C(jī)壓氣機(jī)轉(zhuǎn)子模態(tài)及臨界轉(zhuǎn)速的分析計(jì)算[J];現(xiàn)代制造工程;2012年04期

相關(guān)碩士學(xué)位論文 前6條

1 顏婷燕;泥漿泵筑壩試驗(yàn)研究—中粉質(zhì)壤土區(qū)泥漿泵筑壩人工排水管網(wǎng)優(yōu)選試驗(yàn)[D];西北農(nóng)林科技大學(xué);2014年

2 李園園;自動混合攪拌建筑機(jī)械的結(jié)構(gòu)設(shè)計(jì)[D];煙臺大學(xué);2013年

3 王東霞;螺旋輸送機(jī)的數(shù)值分析及優(yōu)化設(shè)計(jì)的研究[D];河南工業(yè)大學(xué);2012年

4 張紅霞;大型直線振動篩動力學(xué)分析與研究[D];青島科技大學(xué);2009年

5 陳偉文;中型客車車身模態(tài)試驗(yàn)與結(jié)構(gòu)分析[D];長安大學(xué);2008年

6 趙凌燕;滾動軸承—轉(zhuǎn)子系統(tǒng)的非線性動力學(xué)研究[D];西北工業(yè)大學(xué);2003年

本文編號：1777810