汽車無級(jí)變速器設(shè)計(jì)[汽車-cvt型]

汽車無級(jí)變速器設(shè)計(jì)[汽車-cvt型],汽車-cvt型,汽車,無級(jí),變速器,設(shè)計(jì),cvt 哈爾濱工業(yè)大學(xué)華德應(yīng)用技術(shù)學(xué)院畢業(yè)設(shè)計(jì)（論文） 摘 要 無級(jí)變速器特點(diǎn)是采用傳動(dòng)帶和工作直徑可變的主、從動(dòng)輪相配合傳遞動(dòng)力。由于無級(jí)變速器可以實(shí)現(xiàn)傳動(dòng)比的連續(xù)改變，從而得到傳動(dòng)系與發(fā)動(dòng)機(jī)工況的最佳匹配，提高整車的燃油經(jīng)濟(jì)性和動(dòng)力性，改善駕駛員的操縱方便性和乘員的乘坐舒適性，所以它是理想的汽車傳動(dòng)裝置。無級(jí)變速系統(tǒng)主要包括主動(dòng)輪組、從動(dòng)輪組、金屬帶（關(guān)鍵所在）和液壓泵等基本部件。 主動(dòng)輪組和從動(dòng)輪組都由可動(dòng)盤和固定盤組成，與油缸結(jié)合的一側(cè)帶輪軸向滑動(dòng)，另一側(cè)則固定?？蓜?dòng)盤與固定盤都是錐面結(jié)構(gòu)，它們的錐面形成V型槽與V型金屬帶嚙合。發(fā)動(dòng)機(jī)輸出軸輸出的動(dòng)力首先傳遞到無級(jí)變速器的主動(dòng)輪，然后通過V型傳動(dòng)帶傳遞到從動(dòng)輪，最后經(jīng)減速器、差速器傳遞給驅(qū)動(dòng)輪。工作時(shí)通過主動(dòng)輪與從動(dòng)輪的可動(dòng)盤作軸向移動(dòng)來改變主動(dòng)輪、從動(dòng)輪錐面與V型傳動(dòng)帶嚙合的工作半徑，從而改變傳動(dòng)比?？蓜?dòng)盤的軸向移動(dòng)量是由駕駛者根據(jù)需要通過控制系統(tǒng)調(diào)節(jié)主動(dòng)輪、從動(dòng)輪液壓泵油缸壓力來實(shí)現(xiàn)的。本設(shè)計(jì)旨在通過對(duì)金屬帶式無極變速器的研究，找到可循的改良方案?！　? 關(guān)鍵詞 無級(jí)變速器；金屬帶式無極變速器；無級(jí)變速器設(shè)計(jì) Abstract Characteristics of continuously variable transmission belts and work with a diameter of variable from the wheel fit transfer of power. Due to the continuous change of continuously variable transmission can implement the ratio in order to get the best match of transmission and engine condition, improving vehicle fuel economy and power, improve the operating convenience of drivers and passengers riding comfort, it is an ideal vehicle transmission device. Continuously variable transmission system which includes round group, from the wheel group, the metal with the key and basic components of hydraulic pump. Active Wheel Group and passive Wheel Group is composed of movable and fixed disk, and combine cylinder side with Axial sliding and the other side is fixed. Movable and fixed cone structure, they cone Form V type slot with V - type metal belt mesh. Engine output shaft of output power first delivered to continuously variable transmission for driving wheels, and then by V - belt transmission wheel, the final reducer and differential pass driving wheels. Work by driving wheels with gear of movable to move to change the driving wheels, from the work of V - belt mesh and gear cone radius, thus changing the ratio. Movable plate under Axial movement, which was driven by needs through the control system of active round, from the wheel Hydraulic Pump cylinder pressure to achieve. This is designed by the study of metal V - belt type non - polar transmission, found through improvement scheme. Key words ：CVT ；Metal Belt Continuously Variable Transmission； Continuously Variable Transmission 目錄 摘 要 I Abstract II 第1章 緒論 1 1.1 汽車無級(jí)變速器的類型和特點(diǎn) 2 1.1.1 寬V形膠帶式無級(jí)變速器 2 1.1.2 環(huán)盤滾輪式無級(jí)變速器 2 1.1.3 擺銷鏈?zhǔn)綗o級(jí)變速器 2 1.1.4 金屬帶式無級(jí)變速器 3 1.1.5 CVT汽車能節(jié)油的原理 5 1.1.6 無級(jí)變速器使用的注意事項(xiàng) 5 1.1.7 CVT未來的發(fā)展趨勢(shì) 6 1.2 本章小結(jié) 7 第2章 金屬帶式無極變速器基本工作原理 7 2.1 金屬帶式無極變速器基本組成 8 2.2 金屬帶式無極變速器的幾何關(guān)系和基本參數(shù) 10 2.3 金屬帶式無極變速器傳動(dòng)參數(shù)設(shè)計(jì) 14 2.3.1 輸入軸參數(shù)設(shè)計(jì) 14 2.3.2 金屬帶輪參數(shù)設(shè)計(jì) 15 2.4 本章小結(jié) 16 第3章 金屬帶式無極變速器傳動(dòng)和承載能力校核 18 3.1 摩擦傳動(dòng)原理和摩擦因數(shù) 18 3.1.1 摩擦傳動(dòng)原理 18 3.1.2 摩擦因數(shù) 19 3.2 金屬帶傳動(dòng)的力分析 19 3.2.1 金屬帶上的作用力即各力的關(guān)系 19 3.3 帶環(huán)的強(qiáng)度計(jì)算 23 3.3.1 帶環(huán)的靜強(qiáng)度計(jì)算 23 3.2.2帶環(huán)的疲勞強(qiáng)度計(jì)算 23 3.4 本章小結(jié) 24 第4章 金屬帶式無級(jí)變速器的匹配設(shè)計(jì) 25 4.1 汽車傳動(dòng)系的結(jié)構(gòu)組成與任務(wù) 25 4.2 無級(jí)變速器運(yùn)動(dòng)參數(shù)設(shè)計(jì) 25 4.2.1 變速比 25 4.2.2 發(fā)動(dòng)機(jī)最小燃油消耗特性 25 4.2.3 汽車的、齒輪減速比及無級(jí)變速器傳動(dòng)比 27 4.3 本章小結(jié) 28 第5章 雙行星輪行星換向機(jī)構(gòu)設(shè)計(jì) 29 5.1 換向機(jī)構(gòu)組成及工作原理 29 5.2 前進(jìn)、倒檔離合器 29 5.3 雙行星輪換擋機(jī)構(gòu)參數(shù)設(shè)計(jì) 30 5.3.1齒輪參數(shù)的設(shè)計(jì) 31 5.4 本章小結(jié) 34 結(jié)論 35 致 謝 36 附錄1 譯文 38 附錄2 英文參考資料 39 -4-