I 摘 要 汽車制動(dòng)系的功用是使汽車以適當(dāng)?shù)臏p速度降速行駛直至停車 在下坡行駛時(shí) 使 汽車保持適當(dāng)?shù)姆€(wěn)定車速 使汽車可靠地停在原地或坡道上 汽車的制動(dòng)性是汽車主動(dòng) 安全性研究的重點(diǎn)內(nèi)容之一 隨著汽車行駛車速的不斷提高 對汽車制動(dòng)性能的要求也 越來越高 汽車的制動(dòng)系統(tǒng)除了實(shí)現(xiàn)良好的制動(dòng)性能外 還要盡可能地減小駕駛員的工 作強(qiáng)度 因此 動(dòng)力制動(dòng)系統(tǒng)在汽車上得到了廣泛的應(yīng)用 氣壓動(dòng)力制動(dòng)是最常見的動(dòng)力制動(dòng)系統(tǒng) 多用于中重型汽車 氣壓制動(dòng)系統(tǒng)是發(fā)展 最早的一種動(dòng)力制動(dòng)系統(tǒng) 其供能裝置和傳動(dòng)裝置全部是氣壓式的 其控制裝置大多數(shù) 是由制動(dòng)踏板機(jī)構(gòu)和制動(dòng)閥等氣壓控制原件組成 也有的在踏板機(jī)構(gòu)和制動(dòng)閥之間還串 聯(lián)有液壓式操縱傳動(dòng)裝置 本文以一種重型貨車為研究對象 通過理論分析和計(jì)算對其 氣壓制動(dòng)系統(tǒng)結(jié)構(gòu)進(jìn)行設(shè)計(jì) 關(guān)鍵詞 氣壓制動(dòng) 制動(dòng)性 重型貨車 傳動(dòng)裝置 馬林丕 重型貨車氣壓制動(dòng)系統(tǒng)結(jié)構(gòu)設(shè)計(jì) 2 ABSTRACT Automobile brake system function is to reduce the speed of cars to slow down and drive right up to parking When traveling downhill so that the stability of vehicle speed to maintain proper To make reliable cars parked in the ramp or in situ The brake performance iS one of the most important safe performances for the automobile With the increase of running speed of the vehicle the requirements to the brake performance are getting more and more strict Besides the good brake performance the brake system of the automobile is required to reduce the pedal force of the driver Therefore the power servo brake system has made a great development in the automobile The barometric brake system is the most familiar power servo brake system The barometric brake system is the first development of a dynamic braking system Its energy supply all equipment and gear type pressure Most of the control device is a brake pedal and the brake and other institutions formed the original Also some in the brake pedal between institutions and also in series with hydraulic control gear In this paper the application of a kind of heavy goods vehicles Through theoretical analysis and calculation of the structure of its air brake system design Key words barometric brake syste rake performance heavy duty truck Drive Equipment 1 緒論 1 1 1 制動(dòng)系的作用 1 1 2 氣壓制動(dòng)系的研究現(xiàn)狀 2 遼寧工程技術(shù)大學(xué)畢業(yè)設(shè)計(jì) 論文 3 2 制動(dòng)系的總體設(shè)計(jì) 3 2 1 制動(dòng)系統(tǒng)設(shè)計(jì)要求 3 2 2 制動(dòng)系參數(shù)的選擇 4 2 3 汽車總質(zhì)量 4 2 4 制動(dòng)力與制動(dòng)力分配系數(shù) 4 2 5 制動(dòng)器最大制動(dòng)力矩 9 3 制動(dòng)器的設(shè)計(jì)與計(jì)算 12 3 1 鼓式制動(dòng)器的主要參數(shù) 13 3 1 1 制動(dòng)鼓內(nèi)徑 13 3 1 2 摩擦襯片寬度 b 及包角 14 3 1 3 摩擦襯片起始角 0 15 3 1 4 制動(dòng)蹄支撐點(diǎn)位置坐標(biāo) a 和 C 15 3 1 5 制動(dòng)器中心到張開力 F0 作用線的距離 e 15 3 1 6 摩擦襯片的型號及摩擦系數(shù) 15 3 2 鼓式制動(dòng)器的計(jì)算 15 3 2 1 計(jì)算有一個(gè)自由度的緊蹄摩擦片的徑向變形規(guī)律 15 3 2 2 計(jì)算蹄片上的制動(dòng)力矩 16 3 2 3 檢查制動(dòng)蹄有無自鎖 18 3 3 襯片磨損特性的計(jì)算 19 3 3 1 比能量耗散率 單位功負(fù)荷 能量負(fù)荷 19 3 3 2 襯片單位摩擦面積的制動(dòng)器摩擦力 f0 比摩擦力 20 3 3 3 駐車制動(dòng)計(jì)算 21 馬林丕 重型貨車氣壓制動(dòng)系統(tǒng)結(jié)構(gòu)設(shè)計(jì) 4 3 4 制動(dòng)鼓主要零部件的結(jié)構(gòu)設(shè)計(jì) 21 3 4 1 制動(dòng)鼓 21 3 4 2 制動(dòng)蹄 22 3 4 3 制動(dòng)底板 23 3 4 4 凸輪式張開機(jī)構(gòu) 23 3 4 5 摩擦材料 23 3 4 6 支承 24 4 氣壓制動(dòng)驅(qū)動(dòng)機(jī)構(gòu)的設(shè)計(jì)計(jì)算 25 4 1 制動(dòng)氣室 26 4 2 貯氣罐 28 4 3 空氣壓縮機(jī) 30 5 技術(shù)經(jīng)濟(jì)性分析 31 6 總結(jié) 33 致謝 34 參考文獻(xiàn) 35 附錄 A 36 附錄 B 44