【摘要】：無(wú)級(jí)變速裝置可分為摩擦傳動(dòng)無(wú)級(jí)變速裝置與非摩擦傳動(dòng)無(wú)級(jí)變速裝置,摩擦傳動(dòng)無(wú)級(jí)變速裝置均利用工件表面的摩擦來(lái)傳遞動(dòng)力的,因此想要大幅度提高摩擦傳動(dòng)的傳動(dòng)效率是極為困難的,脈動(dòng)式無(wú)級(jí)變速裝置是應(yīng)用最為廣泛的非摩擦傳動(dòng)無(wú)級(jí)變速裝置,但脈動(dòng)式無(wú)級(jí)變速裝置理論上無(wú)法實(shí)現(xiàn)勻速的輸出,而輸出穩(wěn)定無(wú)波動(dòng)的非摩擦式無(wú)級(jí)變速裝置研究與設(shè)計(jì)尚處于空白的狀態(tài)。論文提出了一種新型非摩擦式無(wú)級(jí)變速裝置,對(duì)該裝置的總體方案、結(jié)構(gòu)參數(shù)、運(yùn)動(dòng)特性、從動(dòng)件運(yùn)動(dòng)規(guī)律以及重要零部件的有限元分析等相關(guān)問(wèn)題進(jìn)行了較深入的研究。論文主要完成了如下研究工作:根據(jù)非摩擦式無(wú)級(jí)變速裝置的設(shè)計(jì)思路,將整個(gè)裝置劃分為輸入裝置、輸出裝置以及調(diào)速裝置,并運(yùn)用組合創(chuàng)新法和功能設(shè)計(jì)法分別對(duì)上述三個(gè)部分進(jìn)行了方案創(chuàng)新設(shè)計(jì),提出了一種新型非摩擦式無(wú)級(jí)變速裝置的設(shè)計(jì)方案。在探討了新型非摩擦式無(wú)級(jí)變速裝置工作原理基礎(chǔ)上,結(jié)合無(wú)級(jí)變速裝置的工況與輸出要求,確定了無(wú)級(jí)變速裝置的相數(shù),并對(duì)其輸入裝置與輸出裝置等相關(guān)參數(shù)進(jìn)行了設(shè)計(jì)與計(jì)算,完成了新型非摩擦式無(wú)級(jí)變速裝置的結(jié)構(gòu)設(shè)計(jì),分析了無(wú)級(jí)變速裝置的理論輸出特性與理論調(diào)速特性。構(gòu)建了新型非摩擦式無(wú)級(jí)變速裝置的Creo虛擬樣機(jī),并導(dǎo)入到ADAMS中對(duì)裝置的輸出特性與調(diào)速性能進(jìn)行了仿真分析,驗(yàn)證了新型非摩擦式無(wú)級(jí)變速裝置的可行性。分析了凸輪從動(dòng)件運(yùn)動(dòng)規(guī)律的特性,重新設(shè)計(jì)了凸輪機(jī)構(gòu)的從動(dòng)件運(yùn)動(dòng)規(guī)律,消除了凸輪機(jī)構(gòu)與棘輪機(jī)構(gòu)產(chǎn)生的柔性沖擊,并對(duì)改進(jìn)后的無(wú)級(jí)變速裝置進(jìn)行了多剛體運(yùn)動(dòng)學(xué)仿真,分析了改進(jìn)后裝置的輸出特性。建立了凸輪機(jī)構(gòu)靜平衡方程,分析計(jì)算獲得了曲柄的最大拉力與輸入軸扭矩的分布情況,并在ANSYS中對(duì)其進(jìn)行了有限元分析,結(jié)果表明設(shè)計(jì)的輸入軸與曲柄均滿足強(qiáng)度要求。
[Abstract]:The stepless gearshift device can be divided into friction drive stepless gear device and non-friction drive continuously variable speed device. Friction drive stepless variable speed device uses friction on the surface of workpiece to transfer power. Therefore, it is very difficult to improve the transmission efficiency of friction transmission by a large margin. The pulsating stepless speed change device is the most widely used non-friction transmission stepless speed change device, but the pulsating continuously variable speed device can not realize the uniform speed output theoretically. The research and design of non-friction stepless speed changer with stable output and no fluctuation is still in blank state. In this paper, a new type of non-friction stepless speed-changing device is proposed. The general scheme, structural parameters, motion characteristics, the motion law of follower and the finite element analysis of important parts are studied deeply. The main work of this thesis is as follows: according to the design idea of non-friction stepless variable speed device, the whole device is divided into input device, output device and speed regulating device. By using the combination innovation method and the function design method, the scheme innovation design of the above three parts is carried out, and a new design scheme of the non-friction stepless variable speed device is put forward. On the basis of discussing the working principle of a new type of non-friction CVT, the phase number of CVT is determined by combining the working conditions and output requirements of CVT. The related parameters such as input device and output device are designed and calculated. The structure design of the new non-friction stepless speed-changing device is completed. The theoretical output characteristics and the theoretical speed-regulating characteristics of the stepless speed-changing device are analyzed. The Creo virtual prototype of a new non-friction stepless speed changer is constructed, and the output characteristic and speed regulation performance of the device are simulated and analyzed in ADAMS, which verifies the feasibility of the new non-friction stepless speed changer. The characteristics of the motion law of cam follower are analyzed, the motion law of follower of cam mechanism is redesigned, and the flexible impact of cam mechanism and ratchet mechanism is eliminated. The kinematics simulation of the improved stepless variable speed device is carried out, and the output characteristics of the improved device are analyzed. The static equilibrium equation of cam mechanism is established, and the distribution of maximum pull force and input shaft torque of crank is obtained. The finite element analysis is carried out in ANSYS. The results show that the designed input shaft and crank meet the requirements of strength.
【學(xué)位授予單位】：湘潭大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TH132.46

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王國(guó)明;;基于ADAMS的凸輪機(jī)構(gòu)輪廓曲線設(shè)計(jì)[J];機(jī)電信息;2016年06期

2 葉明;謝佳佳;李鑫;;搭載機(jī)電控制無(wú)級(jí)變速器混合動(dòng)力汽車模式切換仿真分析[J];重慶大學(xué)學(xué)報(bào);2015年06期

3 楊曉杰;高凱旋;王海濤;張秀麗;姚天曙;;現(xiàn)代無(wú)級(jí)變速器的理論研究[J];科技創(chuàng)新與應(yīng)用;2015年15期

4 郜懷朋;曲秀全;;基于ANSYS雙向超越離合器的接觸強(qiáng)度分析[J];航空精密制造技術(shù);2015年02期

5 陳藝;;ADAMS軟件在汽車零部件設(shè)計(jì)中的應(yīng)用[J];科技視界;2015年09期

6 韓澤光;孫哲;郝瑞琴;;凸輪從動(dòng)件運(yùn)動(dòng)規(guī)律的通用修正方法[J];機(jī)械;2014年11期

7 龍勇云;葉石華;吳漢閣;;基于Workbench的弧面凸輪機(jī)構(gòu)靜力學(xué)分析[J];中小企業(yè)管理與科技(中旬刊);2014年08期

8 陳春江;;基于Autodesk Inventor ANSYS的汽車曲柄連桿傳動(dòng)件有限元分析[J];輕工科技;2014年07期

9 趙玉成;賈樹(shù)恒;頓文濤;崔如芳;馬斌強(qiáng);李勉;袁超;;基于ADAMS的虛擬樣機(jī)技術(shù)的發(fā)展與應(yīng)用[J];農(nóng)業(yè)網(wǎng)絡(luò)信息;2013年08期

10 曾文;王玉興;夏紅梅;卿艷梅;;新型機(jī)械式無(wú)級(jí)變速器的設(shè)計(jì)及優(yōu)化[J];中國(guó)機(jī)械工程;2013年13期

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