【正文】 ............... 12 制動(dòng)過(guò)程車輪所受的制動(dòng)力 ........................................................................ 12 制動(dòng)距離與制動(dòng)減速度計(jì)算 ........................................................................ 19 同步附著 系數(shù)與附著系數(shù)利用率計(jì)算 ......................................................... 20 制動(dòng)器的最大制動(dòng)力矩 ................................................................................ 23 4 制動(dòng)器的結(jié)構(gòu)及主要零部件設(shè)計(jì) ................................................................... 25 制動(dòng)器的結(jié)構(gòu)參 數(shù) ....................................................................................... 25 制動(dòng)鼓內(nèi)徑 D ............................................................................................ 25 摩擦襯片寬度 b包角 ? ............................................................................. 26 摩擦襯片起始角 o? .................................................................................... 27 制動(dòng)器中心到張開(kāi)力 0F 作用線的距離 e .................................................. 27 制動(dòng)蹄 支承點(diǎn)位置坐標(biāo) a 和 c ................................................................. 27 摩擦片摩擦系數(shù) ........................................................................................ 27 鼓式制動(dòng)器主要零部件的設(shè)計(jì) .................................................................... 28 制動(dòng)蹄 ........................................................................................................ 28 制動(dòng)鼓 ........................................................................................................ 28 摩擦襯片 .................................................................................................... 29 制動(dòng)底板 .................................................................................................... 30 摩擦材料 .................................................................................................... 30 蹄與鼓之間的間隙調(diào)整裝置 ..................................................................... 30 制動(dòng)器支撐裝置 ........................................................................................ 32 凸輪式張開(kāi)機(jī)構(gòu) ........................................................................................ 32 5 鼓式制動(dòng)器的設(shè)計(jì)計(jì)算 .................................................................................. 33 駐車制動(dòng)能力的計(jì)算 ................................................................................... 33 中央制動(dòng)器的計(jì)算 ....................................................................................... 34 壓力沿襯片長(zhǎng)度方向的分布規(guī)律 ................................................................ 35 計(jì)算蹄片上的制動(dòng)力矩 ............................................................................... 37 檢查制動(dòng)蹄有無(wú)自鎖 ................................................................................... 40 摩擦襯片磨損特性計(jì)算 ............................................................................... 40 6 氣壓制動(dòng)驅(qū)動(dòng)機(jī)構(gòu)的設(shè)計(jì)計(jì)算 ...................................................................... 43 制動(dòng)氣室 ....................................................................................................... 44 貯氣罐 .......................................................................................................... 46 空氣壓縮機(jī) ................................................................................................... 48 7 經(jīng)濟(jì)技術(shù)性分析 .............................................................................................. 49 8 總結(jié) ................................................................................................................. 51 致謝 ..................................................................................................................... 52 參考文獻(xiàn) ............................................................................................................. 53 5 附錄 A 譯文 ......................................................................................................... 54 附錄 B 外文 ........................................................................................................ 63 遼寧工程技術(shù)大學(xué)畢業(yè)設(shè)計(jì)（論文） 1 1 緒論 研究制動(dòng)系統(tǒng)的意義 近百年來(lái)，汽車工業(yè)之所以常勝不衰主要得益于汽車作為商品在世界各處都有廣闊的市場(chǎng)，生產(chǎn)批量大而給企業(yè)帶來(lái)豐厚的利潤(rùn)。 Heavy trucks。 關(guān)鍵詞：氣壓制動(dòng)；制動(dòng)性；重型貨車；傳動(dòng)裝置 ； II Abstract As an important modern landbased transport, Automotive ponents from many large parts ,namely, the socalled assembly which ensure the performance of automotive, and braking system which directly affects the safety of motor vehicles is one of the most important assembly. With the rapid development of highways and increased traffic density, traffic accidents are also increasing. According to the information on the vehicle itself as a result of problems caused by traffic accidents, the brake system failure caused the accident accounting for the total number of 45%. So braking system is an extremely important system to ensure traffic safety. In addition, the braking system has a direct impact on the quality of the average vehicle speed and vehicle transportation efficiency, that is, an important factor ensuring costeffective transport. It not only can slow down a moving vehicle, but also to ensure that the car can be fixed in situ after parking. This shows that the vehicle braking system plays an important role in traffic safety, the reliability of parking, and transport economic efficiency. Today, with everexpanding highway work, the improvement of vehicle speed and traffic density, on the work of automotive braking system relia bee increasingly important. Only vehicles which have good braking performance and reliable braking system can give full play to their highspeed dynamic performance and to ensure the safety of traveling. This shows that the braking system is a very important ponent of the vehicle, thus it’s very important to the analysis and design of brake system requirements Keywords: air brake。 本論文是設(shè)計(jì)東風(fēng)重型貨車的制動(dòng)系統(tǒng)，采用的是氣壓驅(qū)動(dòng)機(jī)構(gòu)的凸輪式鼓式制動(dòng)器。只有制動(dòng)性能良好和制動(dòng)系工作可靠的汽車才能充分發(fā)揮出其高速行駛的動(dòng)力性能并保證行駛的安全性。由此可見(jiàn)，汽車制動(dòng)系統(tǒng)對(duì)于汽車行駛的安全性，停車的可靠性和運(yùn)輸經(jīng)濟(jì)效益起著重要的保證作用。此外，制動(dòng)系統(tǒng)的好壞還