本文關(guān)鍵詞：混凝土泵泵送系統(tǒng)液壓沖擊抑制方法研究　出處：《中南大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 混凝土泵 泵送系統(tǒng) 液壓沖擊 抑制方法 AMEsim仿真

【摘要】：摘要：隨著混凝土泵朝著低液壓沖擊方向發(fā)展,人們對混凝土泵品質(zhì)的要求變高。液壓沖擊作為引起系統(tǒng)振動(dòng)、噪聲和縮短系統(tǒng)使用壽命的重要原因,已成為當(dāng)前混凝土泵研究的熱點(diǎn)。本文針對泵送系統(tǒng)換向時(shí)液壓沖擊的產(chǎn)生機(jī)理及其抑制方法進(jìn)行理論與仿真分析,并進(jìn)行試驗(yàn)研究。主要工作內(nèi)容如下： 1.綜述了混凝土泵送系統(tǒng)的工作特點(diǎn)、國內(nèi)外現(xiàn)狀及發(fā)展趨勢；介紹了液壓系統(tǒng)中液壓沖擊的產(chǎn)生機(jī)理及危害；總結(jié)并分析了國內(nèi)外關(guān)于液壓沖擊及其抑制方法的研究現(xiàn)狀。 2.基于混凝土泵送系統(tǒng)的工作原理和特點(diǎn),分析得出其換向時(shí)產(chǎn)生液壓沖擊的原因在于泵送系統(tǒng)動(dòng)作切換與換向閥換向的不匹配性和外負(fù)載的突變；分析了泵送系統(tǒng)的負(fù)載特性。 3.對泵送系統(tǒng)液壓沖擊進(jìn)行了理論分析與計(jì)算,建立了泵送系統(tǒng)的數(shù)學(xué)模型和AMEsim仿真模型,對液壓沖擊的影響因素進(jìn)行仿真分析,得出了影響規(guī)律和敏感影響因素。 4.有針對性地提出了液壓沖擊抑制方法,并論證了它的可行性與有效性；對泵送液壓系統(tǒng)進(jìn)行改進(jìn),并通過AMEsim仿真對比分析了所提抑制液壓沖擊方法的效果。仿真結(jié)果表明：泵送系統(tǒng)采用雙換向閥加蓄能器對泵送系統(tǒng)液壓沖擊的抑制效果較好；對系統(tǒng)參數(shù)進(jìn)行優(yōu)化,得出最佳參數(shù)組合。 5.在混凝土泵樣機(jī)上進(jìn)行了試驗(yàn)研究,通過試驗(yàn)驗(yàn)證了建模的正確性；對比分析了泵送系統(tǒng)改進(jìn)前后油泵出口壓力及泵送液壓缸無桿腔的壓力變化情況。試驗(yàn)結(jié)果表明：采用雙換向閥加蓄能器可以有效抑制泵送系統(tǒng)的換向液壓沖擊。
[Abstract]:Abstract: with the development of concrete pump in low hydraulic impact direction, people on the quality of concrete pump becomes high. The hydraulic impact as caused by system vibration, an important reason for noise and shorten the system life, has become a research hotspot of concrete pump. In this paper the mechanism of pump system reversing hydraulic shock and its inhibition method theoretical analysis and simulation, experimental study was carried out. The main contents are as follows:
1., the working characteristics of concrete pumping system, the current situation and development trend at home and abroad are reviewed. The mechanism and harm of hydraulic impact in hydraulic system are introduced. The research status of hydraulic impact and its suppression methods at home and abroad is summarized and analyzed.
2., based on the working principle and characteristics of concrete pumping system, it is concluded that the cause of hydraulic impact is the mismatch of pump operation system switching and reversing valve commutation, and the sudden change of external load. The load characteristics of pumping system are also analyzed.
3., the theoretical analysis and calculation of the hydraulic impact of the pumping system is carried out. A mathematical model and a AMEsim simulation model of the pumping system are established. The influencing factors of hydraulic impact are simulated and analyzed, and the influencing rules and sensitive factors are obtained.
4. proposed the hydraulic shock suppression methods, and demonstrates its feasibility and effectiveness; the pump hydraulic system is improved, and through AMEsim simulation comparative analysis of the proposed method. The effect of inhibition of hydraulic impact simulation results show that the pumping system adopts double valve and accumulator good inhibition effect feeding system of hydraulic impact on pump; the parameters of the system optimization, the optimum combination of parameters.
5. in the concrete pump prototype was studied through the experiment verifies the correctness of modeling; comparative analysis of the change of pressure pumping system before and after the improvement of the oil pump outlet pressure and pump hydraulic cylinder rodless cavity. The experimental results show that the double valve plus storage reversing hydraulic device can effectively suppress the impact energy of pump the system.

【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU646

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 傅磊,屈福政,高順德,苗玉彬;混凝土泵車液壓系統(tǒng)仿真研究[J];大連理工大學(xué)學(xué)報(bào);2000年01期

2 劉文濤;國內(nèi)外混凝土泵的主要技術(shù)特點(diǎn)[J];工程機(jī)械與維修;1999年03期

3 周迎春;泵車發(fā)展趨勢淺談[J];建設(shè)機(jī)械技術(shù)與管理;2001年06期

4 陳潤余;我國混凝土機(jī)械發(fā)展概況[J];建設(shè)機(jī)械技術(shù)與管理;2005年08期

5 劉蕾;曾發(fā)林;王超;曾育平;;混凝土泵車泵送系統(tǒng)緩沖效果仿真研究[J];機(jī)床與液壓;2011年13期

6 吳學(xué)松;國內(nèi)混凝土泵車發(fā)展概況[J];建筑機(jī)械化;2004年03期

7 江國耀;;混凝土泵的技術(shù)發(fā)展趨勢和市場前景[J];建筑機(jī)械;2008年15期

8 穆晨;拖式混凝土泵技術(shù)的發(fā)展[J];建筑機(jī)械;1999年03期

9 程友勝;液壓系統(tǒng)液壓沖擊的危害、原因及預(yù)防措施[J];煤礦機(jī)械;2002年03期

10 陳英;荊寶德;魏宏宇;;閉式混凝土泵液壓系統(tǒng)研究[J];農(nóng)業(yè)機(jī)械學(xué)報(bào);2006年10期

，

本文編號(hào)：1372226