【摘要】：裝載機液壓系統(tǒng)是裝載機最關(guān)鍵的系統(tǒng),而裝載機用多路換向閥則是整個液壓系統(tǒng)的最關(guān)鍵元件；本文根據(jù)國內(nèi)裝載機液壓系統(tǒng)的技術(shù)指標及對多路閥換向閥的要求,設計開發(fā)了一款應用于國內(nèi)5噸裝載機液壓系統(tǒng)的多路換向閥,對其功能和工作原理進行了分析及理論計算,確定了產(chǎn)品的主要尺寸及參數(shù)。 本文利用數(shù)值模擬這一先進的設計手段和功能強大的流體仿真軟件COSMOSFloworks對閥體流道結(jié)構(gòu)進行了基于流場仿真的優(yōu)化分析,以計算流體動力學(CFD)理論為基礎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)與試驗數(shù)據(jù)的分析比較,驗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)進行了研究分析對比,并與理論計算及試驗數(shù)據(jù)進行了分析對比； 本文基于有限元分析軟件COSMOSWORKS,對閥體進行了強度、應力、變形以及安全系數(shù)優(yōu)化分析,對疲勞壽命進行了分析研究。 本文對仿真分析結(jié)果采用先進的計算機測量測試技術(shù)進行了技術(shù)性能、微動特性、瞬態(tài)特性、可靠性壽命進行了試驗驗證,一方面考核了產(chǎn)品的各項技術(shù)指標,另一方面對仿真計算進行了驗證分析對比。
[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.
【學位授予單位】：山東大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH243

【引證文獻】

相關(guān)碩士學位論文 前1條

1 牛宏杰;裝載機多路閥與先導閥匹配方法研究[D];吉林大學;2013年

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本文編號：2481167