【摘要】：裝載機(jī)液壓系統(tǒng)是裝載機(jī)最關(guān)鍵的系統(tǒng),而裝載機(jī)用多路換向閥則是整個(gè)液壓系統(tǒng)的最關(guān)鍵元件；本文根據(jù)國內(nèi)裝載機(jī)液壓系統(tǒng)的技術(shù)指標(biāo)及對多路閥換向閥的要求,設(shè)計(jì)開發(fā)了一款應(yīng)用于國內(nèi)5噸裝載機(jī)液壓系統(tǒng)的多路換向閥,對其功能和工作原理進(jìn)行了分析及理論計(jì)算,確定了產(chǎn)品的主要尺寸及參數(shù)。 本文利用數(shù)值模擬這一先進(jìn)的設(shè)計(jì)手段和功能強(qiáng)大的流體仿真軟件COSMOSFloworks對閥體流道結(jié)構(gòu)進(jìn)行了基于流場仿真的優(yōu)化分析,以計(jì)算流體動力學(xué)(CFD)理論為基礎(chǔ)建立了適合多路閥壓力損失、流速、流動研究的數(shù)值分析模型,并通過仿真數(shù)據(jù)與試驗(yàn)數(shù)據(jù)的分析比較,驗(yàn)證了分析模型的合理性和仿真方法的正確性,為同類產(chǎn)品的優(yōu)化開發(fā)探索了一個(gè)可行的途徑。 本文基于流場仿真,對兩種非全周開口的節(jié)流槽的壓力流量特性、流速流動狀態(tài)進(jìn)行了研究分析對比,并與理論計(jì)算及試驗(yàn)數(shù)據(jù)進(jìn)行了分析對比； 本文基于有限元分析軟件COSMOSWORKS,對閥體進(jìn)行了強(qiáng)度、應(yīng)力、變形以及安全系數(shù)優(yōu)化分析,對疲勞壽命進(jìn)行了分析研究。 本文對仿真分析結(jié)果采用先進(jìn)的計(jì)算機(jī)測量測試技術(shù)進(jìn)行了技術(shù)性能、微動特性、瞬態(tài)特性、可靠性壽命進(jìn)行了試驗(yàn)驗(yàn)證,一方面考核了產(chǎn)品的各項(xiàng)技術(shù)指標(biāo),另一方面對仿真計(jì)算進(jìn)行了驗(yàn)證分析對比。
[Abstract]:The hydraulic system of the loader is the most critical system of the loader, and the multi-way directional valve used in the loader is the most key component of the whole hydraulic system. According to the technical index of hydraulic system of domestic loader and the requirement of multi-valve directional valve, a multi-way directional valve applied to the hydraulic system of domestic 5-ton loader is designed and developed in this paper. The function and working principle of the product are analyzed and calculated theoretically, and the main dimensions and parameters of the product are determined. In this paper, numerical simulation is used as an advanced design method and powerful fluid simulation software COSMOSFloworks to optimize the flow channel structure of valve body based on flow field simulation. Based on the (CFD) theory of computational fluid dynamics, a numerical analysis model suitable for the study of pressure loss, velocity and flow of multi-channel valves is established, and the simulation data are compared with the experimental data. The rationality of the analysis model and the correctness of the simulation method are verified, and a feasible way for the optimal development of the same kind of products is explored. In this paper, based on the flow field simulation, the pressure and flow characteristics and velocity flow state of two kinds of throttle with non-full cycle opening are studied and compared, and compared with the theoretical calculation and experimental data. In this paper, the strength, stress, deformation and safety factor of the valve body are optimized based on the finite element analysis software COSMOSWORKS, and the fatigue life is analyzed and studied. In this paper, the simulation results are verified by advanced computer measurement and testing technology, such as technical performance, fretting characteristics, transient characteristics and reliability life. On the one hand, the technical indexes of the product are evaluated. On the other hand, the simulation calculation is verified and compared.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH243

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 牛宏杰;裝載機(jī)多路閥與先導(dǎo)閥匹配方法研究[D];吉林大學(xué);2013年

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本文編號：2481167