【正文】
廣廣 西西 科科 技技 大大 學(xué)學(xué) 鹿鹿 山山 學(xué)學(xué) 院院 本本 科科 生生 畢畢 業(yè)業(yè) 設(shè)設(shè) 計(jì)計(jì) (( 論論 文文 )) 1 廣廣 西西 科科 技技 大大 學(xué)學(xué) 鹿鹿 山山 學(xué)學(xué) 院院 本本 科科 生生 畢畢 業(yè)業(yè) 設(shè)設(shè) 計(jì)計(jì) (( 論論 文文 )) I 摘 要 中型貨車底盤總布置的設(shè)計(jì)是中型貨車總布置設(shè)計(jì)的主體,而中型貨車總布置設(shè)計(jì)是整車設(shè)計(jì)的結(jié)尾,對(duì)于整車設(shè)計(jì)來(lái)說(shuō)是有著至關(guān)重要的地位,所以中型貨車底盤總布置的設(shè)計(jì)是很重要的。本篇文章主要是針對(duì)底盤的各個(gè)部件進(jìn)行選擇、計(jì)算和布置。對(duì)于各個(gè)參數(shù)的選擇和計(jì)算,根據(jù)所選擇的軸數(shù)、驅(qū)動(dòng)形式、貨車的基本性能的要求等因素的考慮來(lái)進(jìn)行設(shè)計(jì)。有了之前的選定,即可確定底盤其他部件的傳動(dòng)系和制動(dòng)系等。在完成上述的工作基礎(chǔ)上,我再對(duì)比同類車型的方案來(lái)進(jìn)行對(duì)比改進(jìn),并且繪制出底盤的總布置圖。 在設(shè)計(jì)的過(guò)程中,為了保證過(guò)車的安全 性與舒適性,我運(yùn)用圖解法對(duì)轉(zhuǎn)向系進(jìn)行校核,確保轉(zhuǎn)向系的運(yùn)動(dòng)干涉問(wèn)題符合要求。 關(guān)鍵詞: 中型貨車;總布置;底盤;貨車設(shè)計(jì) 廣廣 西西 科科 技技 大大 學(xué)學(xué) 鹿鹿 山山 學(xué)學(xué) 院院 本本 科科 生生 畢畢 業(yè)業(yè) 設(shè)設(shè) 計(jì)計(jì) (( 論論 文文 )) II Abstract General layout of the MGV chassis is designed MGV general layout of the body, while the MGV general layout is the end of the vehicle design, vehicle design is to have a crucial role, so the total medium truck chassis layout design is very important. This article is mainly for the various ponents of the chassis selection, calculation and layout. For the selection and calculation of the various parameters considered according to the number of the selected axis to drive the form, the basic performance requirements of the vehicle in such factors to design. With the previously selected, you can determine the drivetrain and other ponents of the braking system, such as the chassis. In the work on the basis of the above, I would pare similar models to pare programs to improve and draw out the general layout of the chassis. In the design process, in order to guarantee a car39。s safety and fort, I use the graphical method of steering system be checked to ensure that sport steering system to meet the requirements of interference problems. Keywords: MGV。 General Arrangement。 chassis。 truck designKeywords: MGV。 General Arrangement。 chassis。 truck design 廣廣 西西 科科 技技 大大 學(xué)學(xué) 鹿鹿 山山 學(xué)學(xué) 院院 本本 科科 生生 畢畢 業(yè)業(yè) 設(shè)設(shè) 計(jì)計(jì) (( 論論 文文 )) i 目錄 .......................................................................................................................................1 中型貨車底盤概述 ........................................................................................................1 中型貨車底盤設(shè)計(jì)步驟 ................................................................................................1 本論文研究的內(nèi)容方案的分析及論證 ..........................................................................1 ......................................................................................................3 底盤各大系統(tǒng)總成部件的選型與計(jì)算 ..........................................................................3 軸數(shù) .......................................................................................................................3 驅(qū)動(dòng)型式 ................................................................................................................3 貨車布置型式 .........................................................................................................3 發(fā)動(dòng)機(jī)主要性能指標(biāo)的選擇 .........................................................................................4 動(dòng)力性參數(shù) ............................................................................................................4 發(fā)動(dòng)機(jī)的選擇 .................................................................................................................8 發(fā)動(dòng)機(jī)形式: .........................................................................................................8 最大功率與最大轉(zhuǎn)矩: ..........................................................................................8 傳動(dòng)系的選擇 ...............................................................................................................9 最小傳動(dòng)比的選擇 .................................................................................................9 最大傳動(dòng)比選擇 .....................................................................................................9 變速器檔位數(shù)的選擇 .................................................................................................. 10 懸架的計(jì)算與形式的確定 ........................................................................................... 10 前軸 ............................................................................................................................ 14 轉(zhuǎn)向器的選擇 ............................................................................................................. 14 制動(dòng)系統(tǒng) .................................................................................................................... 15 車架的選型與計(jì)算 .................................................................................................... 16 當(dāng) 0≤ X≤ 1200 時(shí)的剪力和彎矩: .................................................................... 19 ( 1200≤ X≤ 1400)的剪力和彎矩: .................................................................. 19 ( 1400≤ X≤ 6000)的剪力和彎矩: .................................................................. 20 ( 6000≤ X≤ 8175)的剪力和彎矩: ................................................................ 20 車架的校核計(jì)算 ........................................................................................................ 23 廣廣 西西 科科 技技 大大 學(xué)學(xué) 鹿鹿 山山 學(xué)學(xué) 院院 本本 科科 生生 畢畢 業(yè)業(yè) 設(shè)設(shè) 計(jì)計(jì) (( 論論 文文 )) ii 臨界彎曲應(yīng)力δ c 計(jì)算和校核 ............................................................................ 23 車架的剛度校核 ................................................................................................. 23 .............................................................................................................................. 25 發(fā)動(dòng)機(jī)及傳動(dòng)系的布置 .............................................................................................. 25 車頭、駕駛室的布置 .................................................................................................. 25 動(dòng)軸的布置 ................................................................................................................. 25 懸架的布置 ............................................