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摘要 在本文中 考慮到鋼球圓錐式無級變速器以外的局部修改和改造 不僅是無級變速器或無級變速自行車的分析 這種鋼球式的變速器 是 一種進(jìn)一步的研究和分析 對于這種改造后的無級變速器應(yīng)用于自行車 的無級變速裝置中 一個(gè)大大提高其性能和功能 這個(gè)裝置是通過八鋼 球進(jìn)出相互摩擦河的輸出功率 使用一對斜齒輪索引速度調(diào)節(jié) 然后進(jìn) 行自行車 0 75 1 22 之間無級調(diào)速 這種改造是對自行車無級變速的另 一種應(yīng)用 使用八個(gè)鋼球利用摩擦的輸出方式 是一種新的嘗試 是一 種新的應(yīng)用 這種研究在原有無級變速器的基礎(chǔ)上的應(yīng)用 這些研究表 明 無級變速器在自行車方面的應(yīng)用非常廣泛 而且性價(jià)比極高 使用 價(jià)值和性能也得到了相當(dāng)大的改善和改良 在人們的生活中 可以得以更大的利用 無級變速裝置 可以緩解 人們對自行車的使用的局限性 會給人們帶來更大的方便 它采用一個(gè) 帶和工作主體 驅(qū)動直徑車輪傳遞動力 可實(shí)現(xiàn)連續(xù)變化 傳動比和最 佳匹配變速器和發(fā)動機(jī)的工作條件 而現(xiàn)在 這種新類型的傳輸更適合于現(xiàn)在的生活 自行車自動無級 變速器 自行車自動無級變速其使用 它由兩個(gè)僅單向旋轉(zhuǎn)方向由鏈輪 和兩個(gè)滾子的調(diào)控 以形成一個(gè)鏈 鏈輪可以像普通自行車鏈輪輪輞牽 引鏈傳動自行車后軸 齒輪系安裝在傳遞臂 齒輪系 彈簧組 支架和 軸向移動和機(jī)構(gòu) 在鏈條張力的變化 鏈輪尺寸將是寬還是窄 從而實(shí) 現(xiàn)無自行車驅(qū)動自動無級變速中斷 使用自行車行駛阻力小時(shí)的傳輸可 以生長普通自行車相比 并在丘陵或滿足大風(fēng)循環(huán)阻力是很大的 可以 省時(shí)省力 隨著各種自行車無級變速器的出現(xiàn) 例如 其中包括大直徑改變滑 輪 小直徑改變皮帶輪 傳動帶和滑輪控制可變直徑變速機(jī)構(gòu) 大直徑 的變化 每個(gè)滑輪和小直徑變化安裝在中心輪自行車和后軸軸 連接驅(qū) 動皮帶傳動 換擋齒輪固定在兩個(gè)皮帶輪齒輪箱之間 本實(shí)用新型具有 結(jié)構(gòu)簡單 操作方便 性能可靠 調(diào)速范圍大 非常適合安裝和使用中 的各種變速自行車 而本文研究的鋼球外錐式無級變速器也是諸多新型無級變速器中的 一個(gè) 關(guān)鍵字 無級變速自行車 無級變速裝置 方便 應(yīng)用廣泛 Abstract In this paper in view of the steel ball outside cone type step less transmission for local modification and transformation not only is step less transmission or CVT analysis of bicycle The transmission of ball type is a further research and analysis For this kind of modified step less transmission used in bicycle step less speed change device can greatly improve its performance and function This device is through eight steel ball in and out of the output power of the mutual friction river using a pair of helical gear indexing speed regulation and then make the bike for step less speed regulation between 0 75 1 22 This kind of transformation is another application of bicycle infinitely variable speed using the output of the eight ball using friction is a kind of new try is a new application the research on the basis of the original step less transmission applications these studies show that the step less transmission has a very wide range of applications in the bike and high cost performance use value and performance has been considerable improvement and improvement In the life of people can be to be able to use a larger step less speed change device can relieve people s limitations to the use of bicycles can bring more convenience to people It USES a belt and the work the main driven wheel in diameters to transfer the power can realize continuous change the transmission ratio and the best matching transmission and engine working conditions And now this new type of transmission is more suitable for life now A bicycle automatic step less transmission which used in bicycle automatic step less variable speed It consists of two only unidirectional rotating direction by the regulation of sprocket and two roller to form a chain Sprocket can be like ordinary bicycle sprocket rim drag chain drive bike rear axle A gear train is installed in the transmission arm gear train spring group stents and axial moving and institutions in the chain tension changes the sprocket size will be wide or narrow So as to realize without interruption of bicycle drive automatic step less variable speed Compared with ordinary bikes using the transmission on bicycle travel resistance hours can be growth and in the hills or meet strong wind cycling resistance is big can save Labour Have been all kinds of bicycle step less transmission for example including the big diameter changes pulley small diameter changes pulley drive belt and pulley control variable diameter variable speed institutions large diameter changes each pulley and small diameter changes pulley installed on the center axis of the bicycle and rear axle connect drive belt transmission shift gear is fixed between the two pulley gear box The utility model has simple structure easy operation reliable performance and speed range is big very suitable for the installation and use in a variety of variable speed bicycle And in this paper we study the ball cone type step less transmission also is one of the many new type step less transmission Keyword CVT bike CVT Convenience Widely used 目 錄 第一章 緒論 1 1 1 機(jī)械無級變速器的發(fā)展概況 1 1 2 機(jī)械無級變速器的特征和應(yīng)用 2 1 3 無級變速自行車研究現(xiàn)狀 3 1 4 畢業(yè)論文設(shè)計(jì)內(nèi)容和要求 5 第二章 自行車無級變速器總體方案的選擇 6 2 1 鋼球長錐式 RC 型 無級變速器 6 2 2 鋼球外錐式無級變速器 7 2 3 兩方案的比較與選擇 8 第三章 鋼球外錐式無級變速器部分零件的設(shè)計(jì)與計(jì)算 9 3 1 鋼球與主 從動錐齒輪的設(shè)計(jì)與計(jì)算 9 3 2 加壓盤的設(shè)計(jì)與計(jì)算 10 3 3 調(diào)速齒輪上變速曲線槽的設(shè)計(jì)與計(jì)算 11 3 4 輸入軸的設(shè)計(jì)與計(jì)算 12 3 5 輸出軸的設(shè)計(jì)與計(jì)算 15 3 6 輸入 輸出軸上軸承的選擇與計(jì)算 18 3 7 輸入 輸出軸上端蓋的設(shè)計(jì)與計(jì)算 20 3 8 調(diào)速機(jī)構(gòu)的設(shè)計(jì)與計(jì)算 21 3 9 自行車無級變速器的安裝 22 參考文獻(xiàn) 24 致謝 25