【正文】
............................... 17 主減速器軸承的計(jì)算 ................................................................................ 18 主減速器的潤(rùn)滑 ........................................................................................ 21 本章小結(jié) .................................................................................................... 21 第 4 章 差速器設(shè)計(jì) ................................................................................................. 22 前言 ............................................................................................................ 22 差速器的作用 ............................................................................................ 22 對(duì)稱式圓錐行星齒輪差速器 .................................................................... 22 差速器齒輪的基本參數(shù)選擇 ........................................................... 23 差速器齒輪的幾何尺寸計(jì)算與強(qiáng)度計(jì)算 ....................................... 24 ii 本章小結(jié) .................................................................................................... 27 第 5 章 半軸設(shè)計(jì) ..................................................................................................... 28 前言 ............................................................................................................ 28 半軸的設(shè)計(jì)與計(jì)算 .................................................................................... 28 全浮式半軸的設(shè)計(jì)計(jì)算 ................................................................. 28 半軸的結(jié)構(gòu)設(shè)計(jì)及材料與熱處理 ................................................. 30 本章小結(jié) ..................................................................................................... 31 第 6 章 驅(qū)動(dòng)橋橋殼設(shè)計(jì) ......................................................................................... 31 前言 ............................................................................................................. 31 橋殼的受力分析及強(qiáng)度計(jì)算 ..................................................................... 31 橋殼的靜彎曲應(yīng)力計(jì)算 ................................................................... 31 在不平路面沖擊載荷作用下橋殼 的強(qiáng)度計(jì)算 ............................... 32 汽車以最大牽引力行駛時(shí)的橋殼的強(qiáng)度計(jì)算 ............................... 32 汽車緊急制動(dòng)時(shí)的橋殼強(qiáng)度計(jì)算 ................................................... 34 本章小結(jié) ..................................................................................................... 38 結(jié) 論 ....................................................................................................................... 39 參考文獻(xiàn) ................................................................................................................... 40 致 謝 ....................................................................................................................... 40 附 錄 ....................................................................................................................... 42 1 第 1 章 緒 論 設(shè)計(jì)題目主要參數(shù) 本次設(shè)計(jì) 任務(wù) 是 BJ1090 汽車 驅(qū)動(dòng)橋的設(shè)計(jì)。 Axle Housing。 Main Decelerator。 全套圖紙,加 153893706 關(guān)鍵詞 : 驅(qū)動(dòng)橋;主減速器;全浮式半軸;橋殼; II ABSTRACT The object of the design is The Design for Driving Axle of Heavy Truck. Driving Axle is consisted of Main Decelerator, Differential Mechanism, Half Shaft and Axle Housing. The basic function of Driving Axle is to increase the torque transmitted by Drive Shaft or directly transmitted by Gearbox, then distributes it to left and right wheel, and make these two wheels have the differential function which is required in Automobile Driving Kinematics。 BJ1090 汽車是重型載貨汽車,要保證足夠的離地間隙,滿足汽車的通過性,同時(shí)需要滿足較大的傳動(dòng)比, 本文首先 確定 驅(qū)動(dòng)橋的總體結(jié)構(gòu),在分析驅(qū)動(dòng)橋各部分結(jié)構(gòu)型式,及其以往形式的優(yōu)缺點(diǎn)的基礎(chǔ)上,確定了總體設(shè)計(jì)方案: 采用整體式驅(qū)動(dòng)橋,主減速器的減速型式采用雙級(jí)減速器,主減速器齒輪采用螺旋錐齒輪,差速器采用普通對(duì)稱式圓錐行星齒輪差速器,半軸型式采用全浮式, 橋殼采用 鑄造整體式橋殼。 I 摘 要 本次設(shè)計(jì)的題目是 BJ1090 汽車 驅(qū)動(dòng)橋設(shè)計(jì)。驅(qū)動(dòng)橋一般由主減速器、差速器、半軸及橋殼四部分組成,其基本功用是增大由傳動(dòng)軸或直接由變速器傳來的轉(zhuǎn)矩,將轉(zhuǎn)矩分配給左、右車輪,并使左、右驅(qū)動(dòng)車輪具有汽車行駛運(yùn)動(dòng)學(xué)所要求的差速功能;此外,還要承受作用于路面和車架或車廂之間的鉛垂力、縱向力和橫向力。 在本次設(shè)計(jì)中, 主要完成了 雙級(jí)減速器、圓錐行星齒輪差速器、全浮式半軸、 橋殼的設(shè)計(jì)工作。 besides, the Driving Axle must also stand the lead hangs down strength, the longitudinal force and the transverse force acted on the road surface, the frame or the partment lead. BJ1090 cars are heavy duty truck, to ensure the adequate ground clearance, meet the car by sex, at the same time need to meet large transmission ratio, the configuration of the Driving Axle is introduced in the thesis at first. On the basis of the analysis of the structure and the developing process of Driving Axle, the design adopted the Integral Driving Axle, Double Reduction Gear for Main Decelerator’s deceleration form, Spiral Bevel Gear for Main Decelerator’s gear, Full Floating for Axle and Casting Integral Axle Housing for Axle Housing. In the design, we acplished the design for Double Reduction Gear, tapered Plaary Gear Differential Mechanism, Full Floating Axle and Axle Housing. Key words: Driving Axle。 Full floating axle。 Differential Mechani i 目 錄 摘 要 .......................................................................................................................... I Abstract ..................................................................................... 錯(cuò)誤 !未定義書簽。 技術(shù)參數(shù): 最高車速: km/h 90 前輪距 mm 1830 后輪距 mm 1720 發(fā)動(dòng)機(jī)最大功率 Pemax kW/np (r/min) 118/2500 發(fā)動(dòng)機(jī)最大轉(zhuǎn)矩 Temax N 根據(jù)懸架結(jié)構(gòu)的不同,車橋分為整體式和斷開式兩種。 根據(jù)車橋上車輪的作用,車橋又可分為轉(zhuǎn)向橋、驅(qū)動(dòng)橋、轉(zhuǎn)向驅(qū)動(dòng)橋和支持橋四種類型。 驅(qū)動(dòng)橋的種類及其結(jié)構(gòu)組成 驅(qū)動(dòng)橋作為汽車的重要的組成部分處于傳動(dòng)系的末端,其基本功用是增大由傳動(dòng)軸或直接由變速器傳來的轉(zhuǎn)矩,將轉(zhuǎn)矩分配給左、右驅(qū)動(dòng)車輪,并使左、石驅(qū)動(dòng)車輪 2 具有汽車行駛運(yùn)動(dòng)學(xué)所要求的差速功能;同時(shí),驅(qū)動(dòng)橋還要承受作用于路面和車架或車廂 之間的鉛垂力、縱向力和橫向力。 1 2 3 4 5 6 7 8 9 10 1-半軸 2-圓錐滾子軸承 3-支承螺栓 4-主減速器從動(dòng)錐齒輪 5-油封 6-主減速器主動(dòng)錐齒輪 7-彈簧座 8-墊圈 9-輪轂 10-調(diào) 整螺母 圖 驅(qū)動(dòng)橋 對(duì)于各種不同類型和用途的汽車,正確地確定上述機(jī)件的結(jié)構(gòu)型式并成功地將它們組合成一個(gè)整體 —— 驅(qū)動(dòng)橋,乃是設(shè)計(jì)者必須先解決的問題。當(dāng)驅(qū)動(dòng)車輪采用非獨(dú)立懸掛時(shí),例如在絕大多數(shù)的載貨汽車和部分小轎車上,都是采用非斷開式驅(qū)動(dòng)橋;當(dāng)驅(qū)動(dòng)車輪采用獨(dú)立懸掛時(shí),則配以斷開式驅(qū)動(dòng)橋。這種類型的車一般的設(shè)計(jì)多采用 單 級(jí)減速器,它與 雙 級(jí)減速器相比,在保證離地間隙的同時(shí)可以增