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  本文關鍵詞：裝載機動力優(yōu)化匹配的研究　出處：《山東大學》2011年碩士論文　論文類型：學位論文

  更多相關文章： 裝載機 液力傳動 動力匹配 軟件開發(fā)

【摘要】：如何提高裝載機的動力性及經(jīng)濟性是裝載機及柴油機廠家都非常關心的問題。對裝載機動力匹配進行研究、計算及優(yōu)化,具有重要的工程實用價值。目前,裝載機的匹配工作主要包括：計算液力機械傳動系統(tǒng)的性能,提出優(yōu)化方案；進行裝載機實際工作循環(huán)試驗,處理并分析試驗結(jié)果。本文從工程實用性角度出發(fā),對裝載機動力匹配的計算理論及路譜試驗數(shù)據(jù)的處理方法兩方面進行研究,開發(fā)了一款具有針對性的裝載機動力匹配軟件,并通過試驗驗證了其可靠性,主要研究內(nèi)容包括： (1)通過閱讀大量前人對汽車及工程機械液力機械傳動系統(tǒng)性能的研究成果,結(jié)合國內(nèi)ZL50裝載機自身的技術特點,總結(jié)了裝載機動力匹配計算的理論依據(jù)、計算流程及評價方法。此外,從工程實用性的角度出發(fā),提出了針對裝載機的路譜試驗數(shù)據(jù)處理方法及計算流程。 (2)采用Matlab語言開發(fā)一款具有針對性的裝載機動力匹配軟件,用于裝載機傳動系統(tǒng)的匹配計算及試驗數(shù)據(jù)的處理。與國內(nèi)一些科研院校自行開發(fā)的液力機械傳動系統(tǒng)計算軟件相比有以下特點：首先,該軟件在功能上得到了擴展,除了能進行更詳盡的動力匹配計算,還能按照工程上的規(guī)范處理路譜試驗數(shù)據(jù),并計算工作循環(huán)中其它難以測量的參數(shù),從而使該軟件具有更高的工程實用價值；其次,該軟件在算法上得到了改進,用戶可選擇不同的擬合(插值)算法以適應不同的輸入數(shù)據(jù),方程的求解采用了更為精確及快速的向量化算法。 (3)使用自行開發(fā)的軟件對某ZL50裝載機的兩種型號進行動力匹配預測。在計算時,結(jié)合裝載機實際的工作情況,選取四種方案計算柴油機與液力變矩器的共同工作性能,分五種情況計算裝載機的牽引性能,分四種情況計算裝載機的加速性能。在計算裝載機長距離運輸工況的牽引性能時,通過牽引試驗的最高車速及最大牽引力試驗數(shù)據(jù)驗證了軟件對牽引性能計算的準確性。最后,通過對計算結(jié)果的評價及對比,針對這兩款裝載機提出了優(yōu)化方案。 (4)對裝載機在實際工作循環(huán)的路譜試驗數(shù)據(jù)進行了具有工程實用價值的數(shù)據(jù)分析和處理,用于驗證所編制軟件的可靠性。通過分析柴油機運行情況,繪制了柴油機運行區(qū)域分布云圖,驗證了動力匹配計算結(jié)果的合理性；對大量試驗數(shù)據(jù)進行統(tǒng)計平均,獲得了該兩款柴油機的扭矩及油耗修正曲線,可用于今后的匹配工作；對多個循環(huán)下的裝載機工作循環(huán)的工作時間及瞬時油耗積分進行統(tǒng)計平均,獲得了每個循環(huán)的平均時長及平均油耗量,用于比較這兩款裝載機的動力性和經(jīng)濟性；并且計算了裝載機循環(huán)過程中其它難以測量的傳動系參數(shù),進一步評價了傳動系統(tǒng)的匹配性能。 本文進行了裝載機動力匹配研究,開發(fā)了相應的匹配軟件,可提高今后裝載機動力匹配的效率和可靠性。
[Abstract]:How to improve the power and economy of the loader is a very important problem for both the loader and the diesel engine . The research , calculation and optimization of the loader ' s dynamic matching are of great practical value . At present , the matching work of the loader mainly includes the following steps : calculating the performance of the hydraulic mechanical transmission system , putting forward the optimization scheme , carrying out the actual working cycle test of the loader , processing and analyzing the test results . ( 1 ) Based on the research results of the performance of the hydraulic mechanical transmission system of automobile and engineering machinery , combining with the technical characteristics of ZL50 loader in China , the paper summarizes the theoretical basis , calculation process and evaluation method of power matching calculation of loader . ( 2 ) Using Matlab language to develop a targeted loader power matching software , which is used for the matching calculation of loader transmission system and the processing of test data . Compared with the calculation software of hydraulic mechanical transmission system developed by some domestic research institutes , the software has the following characteristics : firstly , the software is expanded in function , besides , it can deal with the data of road spectrum test according to the specifications in engineering , and calculate other parameters which are difficult to measure in the working cycle , so that the software has higher engineering practical value ; secondly , the software is improved in the algorithm , and the user can select different fitting ( interpolation ) algorithms to adapt to different input data , and the solution of the equation adopts more accurate and fast vectorization algorithm . ( 3 ) Using self - developed software to predict the power match of two models of ZL50 loader . In the calculation , four schemes are selected to calculate the common working performance of the diesel engine and the torque converter . ( 4 ) The data analysis and processing of the actual working cycle of the loader are carried out to verify the reliability of the software . By analyzing the operation of the diesel engine , the distribution chart of the operation region of the diesel engine is drawn . The torque and fuel consumption correction curves of the two diesel engines are calculated and the average duration of each cycle and the average fuel consumption are obtained . The parameters of the transmission system which are difficult to measure during the loading cycle are calculated , and the matching performance of the transmission system is further evaluated . In this paper , the dynamic matching study of loader is carried out , the corresponding matching software is developed , which can improve the efficiency and reliability of the power matching of loader in the future .

【學位授予單位】：山東大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH243

【引證文獻】

相關碩士學位論文 前1條

1 王麗;裝載機牽引性能分析與優(yōu)化軟件的開發(fā)[D];華南理工大學;2013年

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本文編號：1374165