自行車用無級(jí)變速器結(jié)構(gòu)設(shè)計(jì)
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- 自行車用無級(jí)變速器結(jié)構(gòu)設(shè)計(jì)
目錄
1 緒 論 3
1.1 機(jī)械無級(jí)變速器的概述及應(yīng)用 3
1.2 無級(jí)變速器的分類 3
1.3 機(jī)械無級(jí)變速器的發(fā)展 4
1.4 無級(jí)變速自行車研究現(xiàn)狀 6
1.5 畢業(yè)論文設(shè)計(jì)內(nèi)容和要求 7
2 鋼球行星式無級(jí)變速器的總體方案選擇 9
2.1 采用螺旋傳動(dòng)實(shí)現(xiàn)球架的左右移動(dòng) 9
2.2 依靠左右推動(dòng)實(shí)現(xiàn)球架的移動(dòng) 10
2.3 兩方案的選擇與比較 10
3 鋼球行星式無級(jí)變速器部分零件的設(shè)計(jì)計(jì)算 11
3.1 鋼球的設(shè)計(jì)計(jì)算 11
3.2 鋼球支軸轉(zhuǎn)角的設(shè)計(jì)計(jì)算 12
3.3 軸槽的長度及卡盤的傾斜角的設(shè)計(jì)計(jì)算 13
3.4 軸的設(shè)計(jì)計(jì)算 14
3.4.1 軸的選材及最小直徑的計(jì)算 14
3.4.2 軸的結(jié)構(gòu)設(shè)計(jì) 15
3.4.3 軸的校核 16
3.5 滾動(dòng)軸承的選擇 18
3.6 自行車無級(jí)變速器的安裝 19
4 鋼球行星式無級(jí)變速器的變速原理論證 20
4.1 關(guān)于本文的無級(jí)變速器 20
4.2 無級(jí)變速的運(yùn)動(dòng)結(jié)構(gòu)分析 20
4.2.1無級(jí)變速的運(yùn)動(dòng) 20
4.2.2 變速原理分析 22
5 結(jié)論 23
參考文獻(xiàn) 24
致謝 25
外文翻譯 26
自行車用無級(jí)變速器結(jié)構(gòu)設(shè)計(jì)
專業(yè):機(jī)械設(shè)計(jì)制造及其自動(dòng)化
學(xué)生:朱楊華 指導(dǎo)老師:聶松輝
摘 要
無級(jí)變速器傳動(dòng)是指在某種控制的作用下,使機(jī)器的輸出軸轉(zhuǎn)速可在兩個(gè)極值范圍內(nèi)連續(xù)變化的傳動(dòng)方式。而無級(jí)變速器是這樣的一種裝置,它具有主動(dòng)和從動(dòng)兩根軸,并能通過傳遞轉(zhuǎn)矩的中間介質(zhì)(固體、流體、電磁流)把兩根軸直接或間接地聯(lián)系起來,以傳遞動(dòng)力。當(dāng)對(duì)主、從動(dòng)軸的聯(lián)系關(guān)系進(jìn)行控制時(shí),即可使兩軸間的傳動(dòng)比發(fā)生變化(在兩極值范圍內(nèi)連續(xù)而任意地變化)。本文在分析各種無級(jí)變速器和無級(jí)變速自行車的基礎(chǔ)上,把鋼球外錐式無級(jí)變速器進(jìn)行部分改裝,從而形成了自行車的無級(jí)變速裝置。該裝置通過八個(gè)鋼球利用摩擦力將動(dòng)力進(jìn)行輸入輸出,用一對(duì)斜齒輪進(jìn)行分度調(diào)速,從而使自行車在0.75~1.22之間進(jìn)行無級(jí)調(diào)速。研究表明:無級(jí)變速器被用于自行車方面可以大大改善自行車的使用性能,方便廣大消費(fèi)者使用。
關(guān)鍵字: 無級(jí)變速自行車 無級(jí)變速器 調(diào)速
The design of the CVT on bicycle
Major:Mechanical design manufacturing and automation
Student: Zhu Yang Hua Supervisor:Nei Song Hui
Abstract
Have no the class gearbox spread to mean under the function that is a certain to control, make the exportation stalk of machine turn soon can at two pole is worth the continuous variety in the scope of spread a way.But have no class gearbox is such a kind of device, it has active with from move two stalks, and can pass to deliver the middle of turning the Ju to lie quality(the solid, fluid and electromagnetism flows) to contact two stalks directly or indirectly to deliver power.When to lord, from move an axial contact relation to carry on a control, can immediately make spreading of 2 compare occurrence variety.(be worth to change in a row but at will inside the scope in two poles).Based on the analysis of various CVT and CVT bikes,in this dissertation ,we change some parts of the Kopp-B CVT forming a new kind of CVT used to the bicycle .They are used to input or output the power through the friction and a pair of helical gears is also used to adjust the speed, so the speed can change between 0.75 and 1.22.This research shows that when the CVT are used in the bicycle ,they can significant improve the performance of bike so that all customers can use it convenient.
Keyword: CVT bike CVT Speed control.
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