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  本文選題：功率回收　切入點：液壓泵和馬達測試系統(tǒng)　出處：《廣東工業(yè)大學》2012年碩士論文　論文類型：學位論文

【摘要】：隨著近幾十年經(jīng)濟發(fā)展、基礎設施建設步伐的加快和大型工程的陸續(xù)開展,工程機械得到的普及性的應用。利用工程機械施工,可以降低施工人員的勞動強度,提高工作效率以及降低單位時間作業(yè)的成本。作為工程機械之中最重要的挖掘機,應用更為廣泛。挖掘機的液壓泵、馬達都是整個挖掘機液壓系統(tǒng)的重要組成部分,通常被比喻為液壓系統(tǒng)的“心臟”和“手臂”。液壓泵、馬達都是精密而且復雜的液壓元件,他們的性能指標和參數(shù)非常多,并且每一個參數(shù)都對整個系統(tǒng)的工作狀態(tài)產(chǎn)生嚴重的影響。所以對挖掘機的液壓泵、馬達進行全面、科學的測試顯得非常重要和必要。 本論文首先從國家制定的液壓泵、馬達測試標準中所規(guī)定的測試項目、測試方法開始,分析測試系統(tǒng)所要具備的功能,確定液壓原理上的具體實現(xiàn)方法,以及關(guān)鍵液壓元件的選型,分析了液壓泵、馬達測試系統(tǒng)的測控系統(tǒng)的設計思路,比較了不同控制器的優(yōu)缺點,確定了最佳的控制方案。液壓測試系統(tǒng)與其他工業(yè)產(chǎn)品一樣,節(jié)能、減排技術(shù)已經(jīng)成為研究的重要方向之一。本文研究了在測試過程中,能量消耗的途徑；分析比較了不同能量回收的方案之后,提出了適合本課題的能量回收方案；并且對能量回收的量化進行了推導與計算。 另外,本論文利用先進行建模仿真軟件AMESim對液壓馬達測試系統(tǒng)進行了建模與仿真；濾除次要因素,簡化液壓系統(tǒng),在AMESim環(huán)境下建立了模型,重點分析了能量回收率的驗證,被試泵排量與加載泵排量的匹配關(guān)系,功率回收模式下測試系統(tǒng)整體發(fā)熱量的控制優(yōu)化,換向閥塊通徑大、小對整個系統(tǒng)的影響等問題,驗證了功率回收的可行性,探明了系統(tǒng)進一步優(yōu)化的方向。 最后,本論文利用建立好的液壓泵、馬達測試系統(tǒng),對典型的神鋼挖掘機SK260LC主泵,SK200LC旋轉(zhuǎn)馬達進行了較為完整的測試。通過測試得到的曲線報表與仿真結(jié)果進行比對,驗證了仿真對測試系統(tǒng)設計的有效性。 本文設計與開發(fā)的挖掘機液壓主泵、馬達測試系統(tǒng)滿足了系統(tǒng)性能的要求,實際工程應用效果良好。
[Abstract]:With the economic development in recent decades, the accelerated pace of infrastructure construction and the continuous development of large-scale projects, the widespread application of construction machinery and the use of construction machinery can reduce the labor intensity of construction personnel. As the most important excavator in construction machinery, it is more widely used. The hydraulic pump and motor of excavator is an important part of the hydraulic system of the excavator. Often compared to the "heart" and "arm" of hydraulic systems, hydraulic pumps and motors are precise and complex hydraulic components that have a lot of performance and parameters. And every parameter has a serious effect on the working state of the whole system, so it is very important and necessary to test the hydraulic pump and motor of the excavator comprehensively and scientifically. This paper begins with the test items and test methods stipulated in the hydraulic pump and motor test standard, analyzes the functions of the test system, and determines the specific realization method of hydraulic principle. And the selection of key hydraulic components, the design ideas of the measurement and control system of hydraulic pump and motor test system are analyzed, the advantages and disadvantages of different controllers are compared, and the best control scheme is determined. The hydraulic testing system is the same as other industrial products. Energy saving and emission reduction technology have become one of the important research directions. This paper studies the ways of energy consumption in the process of testing, analyzes and compares the different energy recovery schemes, and puts forward the energy recovery scheme suitable for this topic. The quantization of energy recovery is deduced and calculated. In addition, in this paper, the hydraulic motor test system is modeled and simulated by the first modeling and simulation software AMESim, the secondary factors are filtered out, the hydraulic system is simplified, the model is established under the AMESim environment, and the verification of the energy recovery rate is analyzed emphatically. The matching relationship between pump displacement and loading pump displacement, the control optimization of overall heat generation in the test system under the power recovery mode, the large diameter of the reversing valve block and the influence on the whole system are verified, and the feasibility of power recovery is verified. The direction of further optimization of the system has been proved. Finally, by using the established hydraulic pump and motor test system, the typical SK200LC rotary motor of SK260LC main pump of Shengang excavator is tested in this paper. The curve reports obtained are compared with the simulation results. The validity of the simulation to the design of the test system is verified. The hydraulic main pump and motor test system of excavator designed and developed in this paper meets the requirements of system performance, and the practical application effect is good.
【學位授予單位】：廣東工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH137.51

【引證文獻】

相關(guān)期刊論文 前1條

1 王起新;侯小華;肖浪;黃志堅;;功率回收型挖掘機液壓泵及馬達測試技術(shù)開發(fā)[J];機電工程技術(shù);2013年03期

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本文編號：1617970