本文選題：液控多路閥 + 流量放大閥��； 參考：《蘭州理工大學(xué)》2011年碩士論文

【摘要】：液控主閥芯的運(yùn)動(dòng)過程決定了主閥閥口面積的變化過程,從而決定了液壓缸的運(yùn)動(dòng)特性。設(shè)計(jì)建立了液控多路閥和流量放大閥主閥芯瞬態(tài)運(yùn)動(dòng)測(cè)量試驗(yàn)臺(tái),有效測(cè)量出液動(dòng)多路閥主閥芯的瞬態(tài)運(yùn)動(dòng)過程、閥油口壓力瞬變等過程,得出閥口開啟和關(guān)閉的時(shí)間、主閥芯運(yùn)動(dòng)最大速度和加速度等特征量。并搭建了AMESim閥控缸仿真平臺(tái),將主要特征量和實(shí)測(cè)進(jìn)行了對(duì)比,吻合良好。本研究對(duì)于深入理解液控滑閥的控制特性、閥口面積的設(shè)計(jì)和系統(tǒng)匹配具有普遍的指導(dǎo)意義。 主要內(nèi)容如下: 第1章,闡述了本論文研究的背景和意義及多路閥的研究現(xiàn)狀和發(fā)展趨勢(shì)。 第2章,對(duì)液控多路閥內(nèi)部流動(dòng)進(jìn)行了流場(chǎng)解析,得出了閥口壓力損失特性、閥口壓力及速度分布、主閥芯所受穩(wěn)態(tài)液動(dòng)力,并發(fā)現(xiàn)了閥口所在位置,為閥口面積解析提供了依據(jù)。同時(shí)對(duì)液控多路閥的閥口面積進(jìn)行了數(shù)值解析,得出了液控多路閥主閥的閥口面積曲線。 第3章,設(shè)計(jì)建立了液控多路閥主閥芯瞬態(tài)運(yùn)動(dòng)過程測(cè)量試驗(yàn)臺(tái),得出了液控多路閥主閥芯的瞬態(tài)運(yùn)動(dòng)過程、油口壓力的瞬變過程、油缸的運(yùn)動(dòng)過程等;建立了閥控缸的AMESim仿真模型,仿真得出主閥芯的運(yùn)動(dòng)過程和實(shí)測(cè)值吻合良好,采用此AMESim仿真模型分析了主閥芯結(jié)構(gòu)參數(shù)對(duì)主閥芯瞬態(tài)運(yùn)動(dòng)的影響;同時(shí)建立了先導(dǎo)閥控主閥芯的AMESim仿真模型,分析了先導(dǎo)閥結(jié)構(gòu)參數(shù)對(duì)主閥芯瞬態(tài)運(yùn)動(dòng)的影響。 第4章,設(shè)計(jì)建立了流量放大閥主閥芯瞬態(tài)運(yùn)動(dòng)過程測(cè)量試驗(yàn)臺(tái),得出了流量放大閥主閥芯的瞬態(tài)運(yùn)動(dòng)過程、油口壓力的瞬變過程、油缸的運(yùn)動(dòng)過程等。 第5章,采用第3章所建AMESim仿真模型,對(duì)液壓系統(tǒng)動(dòng)態(tài)特性影響因素進(jìn)行了仿真研究,得出了閥芯運(yùn)動(dòng)速度、異步開啟大小、中位回油閥口面積梯度、回油閥口面積梯度等因素對(duì)液壓系統(tǒng)動(dòng)態(tài)特性的影響。 最后,對(duì)本論文的研究工作和成果進(jìn)行了總結(jié),展望了下一步的研究工作。
[Abstract]:The movement process of the main valve core determines the changing process of the main valve opening area, and thus determines the motion characteristics of the hydraulic cylinder. The transient motion measurement test-bed of the main valve core of the hydraulic multiway valve and the flow amplification valve is designed and established. The transient motion process of the main valve core and the transient pressure transient process of the main valve core are effectively measured, and the opening and closing time of the valve opening and closing are obtained. Main spool movement maximum velocity and acceleration and other characteristics. The simulation platform of AMESim valve control cylinder is built, and the main characteristic quantity is compared with the actual measurement, which is in good agreement. This study is of general significance for understanding the control characteristics of the hydraulic slide valve, the design of valve opening area and the system matching. The main contents are as follows: In chapter 1, the background and significance of this thesis and the research status and development trend of multi-way valve are described. In chapter 2, the flow field of the liquid controlled multiway valve is analyzed, and the pressure loss characteristics, the pressure and velocity distribution, the steady hydraulic power of the main valve core are obtained, and the position of the valve port is found. It provides the basis for the analysis of valve opening area. At the same time, the valve area of the hydraulic multiway valve is analyzed numerically, and the curve of the valve opening area of the main valve is obtained. In the third chapter, the transient motion process of the main valve core of the hydraulic multiway valve is designed and established, and the transient motion process of the main valve core, the transient process of the oil mouth pressure and the motion process of the cylinder are obtained. The AMESim simulation model of valve control cylinder is established, and the simulation results show that the movement process of the main valve core is in good agreement with the measured value. The influence of the structural parameters of the main valve core on the transient motion of the main valve core is analyzed by using the AMESim simulation model. At the same time, the AMESim simulation model of pilot valve control core is established, and the influence of pilot valve structure parameters on the transient movement of main valve core is analyzed. In chapter 4, the transient motion process of the main valve core of the flow amplifier valve is designed and set up, and the transient motion process of the main valve core, the transient process of the pressure of the oil port and the motion process of the cylinder are obtained. In chapter 5, by using the AMESim simulation model established in Chapter 3, the factors affecting the dynamic characteristics of hydraulic system are simulated and studied. The movement speed of valve core, the asynchronous opening size, the area gradient of the median oil return valve are obtained. The effect of the area gradient of return valve on the dynamic characteristics of hydraulic system. Finally, the research work and results of this paper are summarized, and the next research work is prospected.
【學(xué)位授予單位】：蘭州理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH137.52

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 黃宗益;輪式裝載機(jī)的發(fā)展趨勢(shì)[J];工程機(jī)械;1996年03期

2 馮開林,陳康寧,鄒廣德,高松;先進(jìn)液壓控制技術(shù)在工程機(jī)械的應(yīng)用研究[J];工程機(jī)械;2002年05期

3 韓學(xué)松;;2010年工程機(jī)械行業(yè)經(jīng)濟(jì)運(yùn)行情況及2011年預(yù)測(cè)[J];工程機(jī)械與維修;2011年03期

4 冀宏;王東升;丁大力;譚正生;劉小平;;非全周開口滑閥閥口面積的計(jì)算方法[J];蘭州理工大學(xué)學(xué)報(bào);2008年03期

5 林曉磊 ,徐瑞銀 ,郭大洲;液壓系統(tǒng)的沖擊、振動(dòng)分析與控制[J];起重運(yùn)輸機(jī)械;2005年04期

6 胡國(guó)清，張光函，吳持恭;LDA和K－ε紊流模型研究液壓集成塊流場(chǎng)[J];成都科技大學(xué)學(xué)報(bào);1996年01期

7 曹秉剛，史維祥，，中野和夫;內(nèi)流式錐閥液動(dòng)力及閥芯錐面壓強(qiáng)分布的實(shí)驗(yàn)研究[J];西安交通大學(xué)學(xué)報(bào);1995年07期

8 楊強(qiáng);;液壓元件的發(fā)展與裝備制造業(yè)的振興[J];現(xiàn)代機(jī)械;2010年03期

9 周文;主動(dòng)振動(dòng)控制技術(shù)的發(fā)展和應(yīng)用[J];液壓氣動(dòng)與密封;2003年04期

10 李建宇;;液壓系統(tǒng)振動(dòng)噪聲產(chǎn)生原因分析[J];液壓與氣動(dòng);2006年05期

相關(guān)碩士學(xué)位論文 前2條

1 王東升;節(jié)流槽滑閥閥口流量系數(shù)及穩(wěn)態(tài)液動(dòng)力計(jì)算的研究[D];蘭州理工大學(xué);2008年

2 譚正生;裝載機(jī)流量放大型轉(zhuǎn)向液壓系統(tǒng)的減振研究[D];蘭州理工大學(xué);2009年

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