機(jī)械凸輪鼓式制動(dòng)器畢業(yè)設(shè)計(jì)(已修改)
2024-12-19 20:58 本頁(yè)面
【正文】 ................................................................... I Abstract ................................................................ II 第 1章 緒 論 ............................................................ 1 ................................................ 1 ............................ 1 ...................................... 1 .......................................................... 2 第 2章 汽車(chē)總體 參數(shù)的選擇及計(jì)算 .......................................... 3 .................................................... 3 軸數(shù) ........................................................ 3 .................................................... 3 .................................................... 3 ................................................ 3 .................................................... 4 .................................................. 4 .................................................... 4 ................................................ 5 .................................................... 5 ........................................................ 5 第 3章 制動(dòng)器的結(jié)構(gòu)型式及要求 ............................................ 6 .............................................. 7 .............................................. 8 ......................................... 12 ......................................... 13 ............................................. 14 ........................................... 14 ........................................... 14 ............................................. 15 第 4章 理想制動(dòng)力及其分配 ............................................... 16 制動(dòng)力與制動(dòng)力分配系數(shù) .......................................... 16 同步附著系數(shù) .................................................... 21 ............................................... 21 第 5章 制動(dòng)器的設(shè)計(jì)計(jì)算 ................................................. 23 鼓式制動(dòng)器的結(jié)構(gòu)參數(shù) ............................................ 23 制動(dòng)鼓論 ........................................................... 44 致 謝 ................................................................... 45 參考文獻(xiàn) ................................................................ 46 2021屆機(jī)械設(shè)計(jì)制造及其自動(dòng)化專業(yè)畢業(yè)設(shè)計(jì) 摘 要 據(jù)有關(guān)資料介紹，在由于車(chē)輛本身的問(wèn)題而造成的交通事故中，制動(dòng)系統(tǒng)故障引起的事故為總數(shù) 的 45%。可見(jiàn)，制動(dòng)系統(tǒng)是保證行車(chē)安全的極為重要的一個(gè)系統(tǒng)。此外，制動(dòng)系統(tǒng)的好壞還直接影響車(chē)輛的平均車(chē)速和車(chē)輛的運(yùn)輸效率，也就是保證運(yùn)輸經(jīng)濟(jì)效益的重要因素。制動(dòng)系既可以使行駛中的汽車(chē)減速，又可保證停車(chē)后的汽車(chē)能駐留原地不動(dòng)。由此可見(jiàn)，汽車(chē)制動(dòng)系對(duì)于汽車(chē)行駛的安全性，停車(chē)的可靠性和運(yùn)輸經(jīng)濟(jì)效益起著重要的保證作用。 關(guān)鍵詞：制動(dòng)系統(tǒng)，運(yùn)輸經(jīng)濟(jì)效益，鼓式制動(dòng)器 I 2021屆機(jī)械設(shè)計(jì)制造及其自動(dòng)化專業(yè)畢業(yè)設(shè)計(jì) Abstract 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. This article through to the monly used drum brakes, according to the working principle analysis models characteristics, such as car stress, pleting the factor of drum brake overall design and nuclear check. Key words: Braking systems , Transportation economic benefit, Drum brake II 2021屆機(jī)械設(shè)計(jì)制造及其自動(dòng)化專業(yè)畢業(yè)設(shè)計(jì) 第 1章 緒 論 車(chē)輛的制動(dòng)性能是車(chē)輛主動(dòng)安全性能中最重要的性能之一。汽車(chē)的制動(dòng)性能是由汽車(chē)的制動(dòng)系統(tǒng)決定的，它主要是給安全行駛提供保證，其中其制動(dòng)器性能的優(yōu)劣將直接影響汽車(chē)整車(chē)性能的優(yōu)劣，直接關(guān)系到駕乘人員的生命財(cái)產(chǎn)安全，重大交通事故往往與制動(dòng)距離過(guò)長(zhǎng)、緊急制動(dòng)時(shí)發(fā)生側(cè)滑和失去轉(zhuǎn)向能力等情況有關(guān)，因此汽車(chē)的制動(dòng)性能是汽車(chē)安全行駛的重要保障。汽車(chē)的制動(dòng)過(guò)程是很復(fù)雜的，它與汽車(chē)總布置和制動(dòng)系各參數(shù)選擇有關(guān)。汽車(chē)制動(dòng)系統(tǒng)主要由供能裝置、傳能裝置、控制裝置和制動(dòng)器組成，制動(dòng)器的實(shí) 際性能是整個(gè)制動(dòng)系中最復(fù)雜和最不穩(wěn)定的因素，因此制動(dòng)器的設(shè)計(jì)在整車(chē)設(shè)計(jì)中顯得非常重。 隨著汽車(chē)安全性的日益提高，汽車(chē)制動(dòng)系統(tǒng)也歷經(jīng)了數(shù)次變遷和改進(jìn)。從最初的皮革摩擦制動(dòng)，到后來(lái)的鼓式、盤(pán)式制動(dòng)器，再到機(jī)械式 ABS制動(dòng)系統(tǒng)，緊接著伴隨電子技術(shù)的發(fā)展又出現(xiàn)了模擬電子 ABS 制動(dòng)系統(tǒng)、數(shù)字式電控 ABS制動(dòng)系統(tǒng)，等等。近 10 年來(lái)，西方發(fā)達(dá)國(guó)家又興起了對(duì)汽車(chē)線控系統(tǒng)的研究，線控制動(dòng)系統(tǒng)應(yīng)運(yùn)而生，并開(kāi)展了對(duì)電控機(jī)械制動(dòng)系統(tǒng)的研究。簡(jiǎn)單來(lái)說(shuō)，電控機(jī)械制動(dòng)系統(tǒng)就是把原來(lái)液壓或 者壓縮空氣驅(qū)動(dòng)的部分改為電動(dòng)機(jī)驅(qū)動(dòng)，借以提高響應(yīng)速度，增加制動(dòng)效能 , 同時(shí)大
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