【摘要】：目前國內(nèi)裝載機(jī)主要采用行星式變速器或者液力機(jī)械半動(dòng)力換擋變速器,其結(jié)構(gòu)陳舊,技術(shù)落后,使用壽命較短,可靠性差,只能夠滿足各類中低檔主機(jī)的需要,嚴(yán)重阻礙了裝載機(jī)在工程建設(shè)中的廣泛應(yīng)用及整機(jī)出口。而隨著國家基礎(chǔ)設(shè)施投資力度的加大和工程建設(shè)的難度的提高,用戶對(duì)裝載機(jī)的換擋系統(tǒng)和變矩器的性能提出了更高要求,因此需要研制新的換擋系統(tǒng)和高性能變矩器,探索提高換擋和傳動(dòng)效率的途徑。 本文以DANA32000裝載機(jī)用自動(dòng)變速器為研究對(duì)象,在分析了變速器管路油液系統(tǒng)及液力變矩器流場基礎(chǔ)之上,利用虛擬現(xiàn)實(shí)仿真技術(shù)、數(shù)字化模型和有限元分析相結(jié)合的方法,完成了以下研究工作： 首先,建立了DANA3200型變速器管路油液系統(tǒng)的數(shù)字化模型,通過虛擬現(xiàn)實(shí)仿技術(shù),在虛擬現(xiàn)實(shí)仿真平臺(tái)Open inventor的基礎(chǔ)上,實(shí)現(xiàn)了變速器各檔位的控制仿真和各檔位之間的變換仿真,向開發(fā)人員直觀展示了變速器管液油液系統(tǒng)的工作狀況,方便了變速器的開發(fā)工作。 其次,研究了變矩器內(nèi)部流場狀況,利用ANSYS 12.0提供的Workbench平臺(tái)對(duì)變矩器工作論模型進(jìn)行處理,抽取流道模型,在CFX模塊進(jìn)行網(wǎng)格劃分和體有限元分析,得到了傳動(dòng)比i=0.75工況下的流場理論數(shù)據(jù),然后以VC++6.0為開發(fā)工具,以O(shè)pen Inventor為仿真平臺(tái),把分析得到的理論數(shù)據(jù)用錐體代表進(jìn)行可視化仿真,流場的方向和大小分別用錐體的方向和顏色代表,實(shí)現(xiàn)了變矩器內(nèi)部流場的虛擬現(xiàn)實(shí)仿真。仿真結(jié)果為優(yōu)化變速器結(jié)構(gòu)提供了理論依據(jù),也為變速器的物理樣機(jī)設(shè)計(jì)提供指導(dǎo)方向。 本課題研究結(jié)果揭示了變速器管路油液系統(tǒng)的運(yùn)動(dòng)狀況,通過向設(shè)計(jì)人員直觀展示變速器的檔位控制系統(tǒng)及檔位變換時(shí)管路內(nèi)液體的流動(dòng),為變速器的電液控制系統(tǒng)開發(fā)提供了可視化參考依據(jù),流場的虛擬現(xiàn)實(shí)仿真展示了在正常工況下變矩器內(nèi)部液壓傳動(dòng)液的流場分布,為優(yōu)化變矩器的結(jié)構(gòu)提供了理論依據(jù),為新型變速器物理樣機(jī)的研制開發(fā)工作提供了方便。
[Abstract]:At present, the domestic loaders mainly adopt planetary transmission or hydraulic mechanical semi-power shift transmission, which has outdated structure, backward technology, short service life and poor reliability, which can only meet the needs of all kinds of middle and low grade mainframes. It seriously hinders the wide application of loader in engineering construction and the export of the whole machine. With the increase of national infrastructure investment and the improvement of the difficulty of engineering construction, users put forward higher requirements for the performance of the shift system and torque converter of loaders, so it is necessary to develop a new shift system and high performance torque converter. Explore the ways to improve the efficiency of shift and transmission. In this paper, the automatic transmission for DANA32000 loader is taken as the research object. On the basis of analyzing the flow field of oil system and torque converter in transmission pipeline, the method of combining virtual reality simulation technology, digital model and finite element analysis is used. The following research work is completed: firstly, the digital model of DANA3200 transmission pipeline oil system is established, and based on the virtual reality simulation platform Open inventor, the digital model of DANA3200 transmission pipeline oil system is established. The control simulation of each gear position of the transmission and the transformation simulation between the gears are realized, and the working condition of the liquid oil system of the transmission pipe is displayed intuitively to the developers, which facilitates the development of the transmission. Secondly, the flow field in the torque converter is studied. The working theory model of the torque converter is processed by using the Workbench platform provided by ANSYS 12.0, the flow channel model is extracted, and the grid division and volume finite element analysis are carried out in the CFX module. The theoretical data of the flow field under the condition of transmission ratio I 鈮，

本文編號(hào)：2478233