全液壓裝載機液壓系統(tǒng)仿真與實驗研究
本文關(guān)鍵詞:全液壓裝載機液壓系統(tǒng)仿真與實驗研究 出處:《吉林大學(xué)》2012年碩士論文 論文類型:學(xué)位論文
更多相關(guān)文章: 全液壓裝載機 AMESim 液壓傳動 仿真 實驗
【摘要】:近年來,隨著我國經(jīng)濟的迅猛發(fā)展,大量基礎(chǔ)建設(shè)如公路、水電、港口、建筑及礦山等的不斷開發(fā),裝載機憑借快速作業(yè)、機動性能好、工作效率高、操作靈活等優(yōu)點被大量的使用,僅2011年裝載機的銷量就達23萬輛。 全液壓裝載機作為裝載機家族中的一員,其工作系統(tǒng)與行駛系統(tǒng)均采用液壓驅(qū)動,這種驅(qū)動方式的裝載機具有結(jié)構(gòu)緊湊、作業(yè)效率高、低能耗、寬高效區(qū)等優(yōu)點,因此發(fā)展速度很快。隨著社會發(fā)展、工程需要及技術(shù)的進步,這種驅(qū)動方式的裝載機必定會成為一種發(fā)展趨勢。因此全液壓輪式裝載機的研制便變得愈來愈有意義,越來越多廠家開始投入人力、物力對其進行研發(fā)。我國工業(yè)基礎(chǔ)比較薄弱以及起步比較晚,在裝載機研發(fā)方面雖說已經(jīng)取得的一定的成績,但相對于歐美國家還有不小的差距。目前國內(nèi)自行設(shè)計生產(chǎn)的載機主要是液力傳動,對于全液壓裝載機的理論研究還比較少。 本文通過對全液壓裝載機液壓系統(tǒng)的分析,建立了關(guān)鍵部件的數(shù)學(xué)模型,對裝載機液壓系統(tǒng)中工作液壓系統(tǒng)和行走液壓系統(tǒng)建立了AMESim仿真模型,并進行仿真分析與測試對比,分析結(jié)果表明,仿真模型建立正確,這為全液壓裝載機的動態(tài)化數(shù)字化設(shè)計提供了理論依據(jù)。本文主要研究內(nèi)容包括: 1、介紹了全液壓裝載機液壓系統(tǒng)的發(fā)展趨勢,并分析了全液壓裝載機液壓系統(tǒng)的工作原理,同時建立了系統(tǒng)的數(shù)學(xué)模型,為系統(tǒng)分析以及利用軟件建立模型奠定基礎(chǔ)。 2、利用液壓仿真軟件AMESim分別建立了全液壓裝載機工作液壓系統(tǒng)、行走液壓系統(tǒng)以及發(fā)動機系統(tǒng)模型,,并對整機的工作過程進行了動態(tài)分析。 3、對裝載機液壓系統(tǒng)進行試驗研究,測得工作液壓系統(tǒng)、行走液壓系統(tǒng)在不同工況下的壓力曲線。將試驗測得曲線與軟件仿真獲得曲線進行對比,驗證仿真模型的正確性。
[Abstract]:In recent years, with the rapid development of China's economy, a large number of infrastructure such as roads, hydropower, ports, buildings and mines, such as the continuous development of loaders by virtue of rapid operation, good mobility, high efficiency. Flexible operation and other advantages of a large number of use, only in 2011 the sales of loaders reached 230,000. As a member of the family of full hydraulic loaders, both the working system and the driving system are driven by hydraulic pressure. This type of loader has compact structure, high working efficiency and low energy consumption. With the development of society, engineering needs and technology progress. Therefore, the development of full hydraulic wheel loader becomes more and more meaningful, and more and more manufacturers begin to put in manpower. Material resources for its research and development. China's industrial base is relatively weak and start relatively late, in the loader R & D although has made certain achievements. However, there is still a large gap between Europe and America. At present, the domestic self-designed and produced loaders are mainly hydraulic transmission, and the theoretical research on full hydraulic loaders is still relatively few. Through the analysis of the hydraulic system of the full hydraulic loader, the mathematical model of the key components is established, and the AMESim simulation model of the working hydraulic system and the walking hydraulic system in the hydraulic system of the loader is established. The simulation analysis and test results show that the simulation model is correct, which provides a theoretical basis for the dynamic digitization design of full hydraulic loader. The main contents of this paper are as follows: 1. The development trend of hydraulic system of full hydraulic loader is introduced, and the working principle of hydraulic system of full hydraulic loader is analyzed. At the same time, the mathematical model of the system is established. It lays the foundation for system analysis and software modeling. 2. The working hydraulic system, the walking hydraulic system and the engine system model of the whole hydraulic loader are established by using the hydraulic simulation software AMESim, and the dynamic analysis of the working process of the whole machine is carried out. 3. The hydraulic system of loader is tested, and the pressure curves of working hydraulic system and walking hydraulic system under different working conditions are measured and compared with the curves obtained by software simulation. The correctness of the simulation model is verified.
【學(xué)位授予單位】:吉林大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2012
【分類號】:TH243
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