【摘要】：齒輪箱系統(tǒng)作為現(xiàn)代機(jī)械設(shè)備中一種常用的和必不可少的零部件,由于其本身結(jié)構(gòu)復(fù)雜,工作強(qiáng)度很大,工作環(huán)境惡劣等原因,很容易受到損害和出現(xiàn)故障,而其一旦出現(xiàn)故障,造成的安全問題和經(jīng)濟(jì)利益問題常常都是巨大的。因此,無論是從安全角度還是經(jīng)濟(jì)利益角度出發(fā),對齒輪箱系統(tǒng)進(jìn)行狀態(tài)監(jiān)測和故障診斷,防止故障的發(fā)生,都有著重要的價值和意義。 利用虛擬樣機(jī)技術(shù)對齒輪箱系統(tǒng)的故障進(jìn)行仿真研究,并對其振動信號進(jìn)行分析,是最近幾年來隨著計算機(jī)技術(shù)的發(fā)展和完善而新興的一個前沿的課題。在齒輪箱系統(tǒng)的箱體上采集到的振動信號里包含著豐富的能反映其運行狀態(tài)的信息,所以本文建立了齒輪箱系統(tǒng)的剛?cè)狁詈咸摂M樣機(jī)模型,對其進(jìn)行仿真并且對箱體上的振動信號進(jìn)行了分析研究,其結(jié)果與理論計算值和實驗數(shù)據(jù)基本一致,驗證了本虛擬樣機(jī)模型的準(zhǔn)確性與可信性,為借助虛擬樣機(jī)技術(shù)進(jìn)行齒輪箱系統(tǒng)的故障診斷和特征分析提供了種新的思路。 本論文進(jìn)行的主要工作如下： (1)利用三維實體造型軟件PROE,創(chuàng)建了齒輪箱系統(tǒng)的三維實體零件圖及裝配體模型,并且詳細(xì)介紹了運用PROE進(jìn)行直齒圓柱齒輪參數(shù)化建模的方法。 (2)借助PROE與ADAMS的專用數(shù)據(jù)轉(zhuǎn)換接口軟件Mechanism/Pro,將齒輪箱系統(tǒng)的三維實體模型導(dǎo)入ADAMS,生成齒輪箱系統(tǒng)的多剛體模型,利用有限元分析軟件ANSYS將其中的輸入軸、輸出軸、上箱體、下箱體柔性化后替換多剛體模型中的相應(yīng)零件,對模型施加約束、載荷、驅(qū)動,建立了齒輪箱系統(tǒng)的剛?cè)狁詈咸摂M樣機(jī)模型。 (3)對齒輪箱系統(tǒng)的剛?cè)狁詈咸摂M樣機(jī)模型進(jìn)行正常運行、齒輪磨損故障、斷齒故障三種工況下的仿真,得到的仿真結(jié)果與理論計算值及實驗數(shù)據(jù)基本一致,從而驗證了本文所建模型的準(zhǔn)確性與可信性。 (4)以文中仿真提取到的齒輪箱系統(tǒng)的振動信號為例,分析了處理振動信號常用的時域分析法、頻域分析法、細(xì)化譜分析法、解調(diào)譜分析法在齒輪箱系統(tǒng)振動特征分析和特征提取方面的優(yōu)勢。
[Abstract]:As a common and indispensable part in modern mechanical equipment, gearbox system is easy to be damaged and malfunction because of its complicated structure, high working intensity and bad working environment. However, once it fails, the safety problems and economic benefits are often enormous. Therefore, from the point of view of safety and economic benefits, it is of great value and significance to monitor and diagnose the condition of gearbox system and prevent the fault from happening. With the development and perfection of computer technology in recent years, the simulation and analysis of the vibration signal of gearbox system based on virtual prototyping technology is a new frontier subject. The vibration signals collected on the box of the gearbox system contain abundant information which can reflect the running state of the gearbox system, so the rigid-flexible coupling virtual prototype model of the gearbox system is established in this paper. The simulation results are consistent with the theoretical and experimental data, and the veracity and credibility of the virtual prototype model are verified. It provides a new idea for fault diagnosis and feature analysis of gear box system with virtual prototyping technology. The main work of this paper is as follows: (1) the 3D solid part drawing and assembly model of the gearbox system are created by using 3D solid modeling software PROE,. The parameterized modeling method of spur gear with PROE is introduced in detail. (2) the three-dimensional solid model of the gearbox system is imported into ADAMS, to generate the multi-rigid body model of the gearbox system by using the special data conversion interface software Mechanism/Pro, of PROE and ADAMS, and the input axis and output axis of the gearbox system are obtained by using the finite element analysis software ANSYS. After the flexibility of the upper box and lower box, the corresponding parts in the multi-rigid body model were replaced, and the rigid-flexible coupling virtual prototype model of the gearbox system was established by imposing constraints, loads and driving on the model. (3) the rigid-flexible coupling virtual prototype model of the gearbox system is simulated under three working conditions, namely, gear wear fault and broken tooth fault. The simulation results are in good agreement with the theoretical calculation value and the experimental data. The veracity and credibility of the model are verified. (4) taking the vibration signal of the gearbox system as an example, the time-domain analysis method, frequency-domain analysis method and thinning spectrum analysis method are analyzed. The advantages of demodulation spectrum analysis in the vibration feature analysis and feature extraction of gearbox system.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH165.3

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