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大學(xué)機(jī)械工程學(xué)院畢業(yè)設(shè)計(jì)（論文）
2t汽車后橋總體設(shè)計(jì)
摘要：汽車后橋是汽車的驅(qū)動(dòng)部分,是整個(gè)汽車傳動(dòng)系的最末端,對(duì)汽車的性能起著至關(guān)重要的作用。根據(jù)車橋能否傳遞驅(qū)動(dòng)力，汽車車橋分為驅(qū)動(dòng)橋和從動(dòng)橋。驅(qū)動(dòng)橋的結(jié)構(gòu)型式按齊總體布置來說共有三種，即普通的非斷開式驅(qū)動(dòng)橋，帶有擺動(dòng)半軸的非斷開式驅(qū)動(dòng)橋和斷開式驅(qū)動(dòng)橋。本設(shè)計(jì)對(duì)象是小型低速載貨汽車的后驅(qū)動(dòng)橋。
本設(shè)計(jì)完成了小型低速載貨汽車的后驅(qū)動(dòng)橋中主減速器、差速器、驅(qū)動(dòng)車輪的傳動(dòng)裝置及橋殼等部件的設(shè)計(jì)。本文根據(jù)小型低速載貨汽車的后驅(qū)動(dòng)橋的要求，通過選型，確定了主減速器傳動(dòng)副類型，差速器類型，驅(qū)動(dòng)橋半軸支承類型。通過計(jì)算計(jì)算，確定了主減速比，主、從動(dòng)錐齒輪、差速器、半軸以及橋殼的主要參數(shù)和結(jié)構(gòu)尺寸。
最后利用CAD軟件繪制零部件裝配圖和裝配總圖并通過主要零部件的校核計(jì)算和對(duì)主要零部件二維繪圖，確定所設(shè)計(jì)的能夠滿足設(shè)計(jì)要求。
關(guān)鍵詞：汽車后橋；驅(qū)動(dòng)橋；主減速器；差速器
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南華大學(xué)機(jī)械工程學(xué)院畢業(yè)設(shè)計(jì)（論文）
The overall design of the rear axle for 2 tons bus
Abstract:Automobile rear axle is part of the car's driver is the far end of the entire automobile transmission, the performance of the car plays a vital role.According to weather the axle could transfer driving force or not,the automobile axle is divided into drive axle and driven axle. Sport utility passenger vehicle (SUV) for the four-wheel drive, both cities run, field sports, in addition to the premium sedan with the comfort, we must also have a higher cross-country and safety. The object that is designed for small low-speed trucks is drive of rear axle.
The design of drive of rear axle includes the design of the main reducer , the design of the differential device and rear axle design. According to the requirements of the rear axle,i can identify the main types of main gear box, differential device, rear axle.And by calculating, i can identify the main reduction ratio, the main, driven helical bevel gear , differential device and the shell of the main parameters of the bridge structure and size. One part of the calculation using the computer program to complete the self, reducing computing time and improve efficiency.
Finally,I use CAD software to draw parts of assembly drawings and the whole assembly drawings.In the meanwhile,I checking through the major components of the calculation of the main components and two-dimensional drawings, to determine the design to meet the design requirements.
Key words:automobile rear axle ; drive axle ; main reducer ; differential device
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