本文選題：三支點(diǎn)橋式起重機(jī) + 振動(dòng)特性�。� 參考：《工程設(shè)計(jì)學(xué)報(bào)》2017年05期

【摘要】：橋式起重機(jī)的動(dòng)態(tài)特性直接影響其運(yùn)行可靠性,而減速器齒輪系統(tǒng)各參數(shù)對(duì)其綜合性能影響較大,因此有必要研究齒輪系統(tǒng)動(dòng)力學(xué)特性隨各參數(shù)變化的內(nèi)在機(jī)理及變化規(guī)律,達(dá)到橋式起重機(jī)減振降噪的設(shè)計(jì)目的。利用ANSYS軟件建立三支點(diǎn)橋式起重機(jī)整體有限元分析模型,在各級(jí)齒輪副接觸線上施加內(nèi)部動(dòng)態(tài)激勵(lì),基于模態(tài)疊加法分析其振動(dòng)特性,進(jìn)而實(shí)現(xiàn)結(jié)構(gòu)噪聲的預(yù)估,并通過(guò)試驗(yàn)來(lái)驗(yàn)證仿真方法的可行性。在保證各級(jí)齒輪副中心距不變和總傳動(dòng)比相近的條件下,分析了不同模數(shù)、螺旋角、軸承支承剛度、結(jié)構(gòu)阻尼比和負(fù)載下齒輪系統(tǒng)的振動(dòng)特性和結(jié)構(gòu)噪聲,得到了系統(tǒng)振動(dòng)加速度有效值、頻譜圖和結(jié)構(gòu)噪聲隨各參數(shù)的變化規(guī)律。分析結(jié)果為橋式起重機(jī)相關(guān)參數(shù)的改進(jìn)和減振降噪設(shè)計(jì)提供了理論依據(jù)和參考。
[Abstract]:The dynamic characteristics of bridge crane have a direct impact on its operational reliability, while the parameters of gear system of reducer have a great influence on its comprehensive performance. Therefore, it is necessary to study the inherent mechanism and variation law of dynamic characteristics of gear system with each parameter. The design purpose of reducing vibration and noise of bridge crane is achieved. The whole finite element analysis model of three-fulcrum bridge crane is established by using ANSYS software. The internal dynamic excitation is applied on the contact line of gear pairs at all levels. The vibration characteristics of the crane are analyzed based on modal superposition method, and the structural noise prediction is realized. The feasibility of the simulation method is verified by experiments. The vibration characteristics and structural noise of gear system under different modulus, helical angle, bearing support stiffness, structure damping ratio and load are analyzed under the condition that the center distance of each gear pair is invariable and the total transmission ratio is similar. The effective values of system vibration acceleration, spectrum diagram and structural noise varying with each parameter are obtained. The results provide a theoretical basis and reference for the improvement of bridge crane parameters and the design of vibration and noise reduction.
【作者單位】： 重慶大學(xué)機(jī)械傳動(dòng)國(guó)家重點(diǎn)實(shí)驗(yàn)室;江蘇泰隆減速機(jī)股份有限公司;
【基金】：國(guó)家科技支撐計(jì)劃資助項(xiàng)目(2015BAF06B02) 國(guó)家自然科學(xué)基金資助項(xiàng)目(51175524)
【分類號(hào)】：TH215
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本文編號(hào)：1830033