手動變速器畢業(yè)設(shè)計-畢業(yè)設(shè)計-全文預(yù)覽
【正文】 o get different power and speed in start, climbing, turning, accelerating, and other case of travel. Transmission has two styles of mechanical manule transmission and mechanical devices continues transmission, if the transmission’s shift more its power and economic was guaranteed, if fewer its manipulation is convenience, this design I design a light truck transmission, this design I determined the peed ratio after careful analys of peed ratio and ultimately the relevant type of the car, I made a careful analysis of the layout of the drive agency programmers against the transmission and finally use the 5+1 block intermediate transmission, the form of shift use a synchronous device. After requested the overall the form of agencies use direct manipulation institutional forms. This designed of transmission meet the dynamic of the necessary power also meet its economic targets. Final adoption the degree of gear, axle, keys, bearings, etc. the size of transmission and strength of ponents are designed to meet the requirements. The development trend of the transmission is more plex, more and more is also high automation degree, automatic transmission is the mainstream of the future. KEY WORDS: Transmission, Design, light truck, Speed ratio. III 目 錄 前 言 ....................................................................................................... 1 第 1 章 變速器傳動機構(gòu)布置 ............................................................... 2 傳動機構(gòu)布置方案分析 ........................................................... 2 倒檔傳動方案 .................................. 錯誤 !未定義書簽。結(jié)合總 體的要求操縱機構(gòu)形式選用直接操縱機構(gòu)形式。 變速器有機械式手動變速器和機械式無級變速器兩種，如果變速器擋位多其動力性和經(jīng)濟性得到保證，擋位少其操縱方便，本次設(shè)計我設(shè)計的是輕型貨車變速器，本次設(shè)計中我對其傳動比作了仔細的分析計算并參考相關(guān)車型最終確定了各擋的傳動比，針對變速器的傳動機構(gòu)方案的布置作了詳細的分析最終選用 5+1擋中間軸式變速器，換擋形式采用同步器換擋。 變速器的發(fā)展趨勢是越來越復(fù)雜，自動化程度也越來越高，自動變速器將是未來的主流。 換擋結(jié)構(gòu)形式 .................................. 錯誤 !未定義書簽。 齒形、壓力角 α、螺旋角 β 和齒寬 b錯誤 !未定義書簽。 確定常嚙合齒輪副的齒數(shù) .............. 錯誤 !未定義書簽。 軸承的計算與校核 ..................................... 錯誤 !未定義書簽。變速器設(shè)有空擋，可在啟動發(fā)動機，汽車滑行或停車時使發(fā)動機的動力停止向驅(qū)動輪傳輸。 2)設(shè)置空擋，用來切斷發(fā)動機動力向驅(qū)動輪的傳輸。 6)工作可靠。 除此之外，變速器還應(yīng)當(dāng)輪廓尺寸和質(zhì)量小、制造成本
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