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哈爾濱工業(yè)大學華德應用技術學院畢業(yè)設計(論文)
摘 要
汽車制動系統(tǒng)是汽車各個系統(tǒng)中最為重要的。如果制動系統(tǒng)失靈,那么結(jié)果將會是毀滅性的。制動器實際上是一個能量轉(zhuǎn)化裝置,這種轉(zhuǎn)化實際上是把汽車的動能轉(zhuǎn)換為汽車的熱能揮發(fā)出去,當制動器制動時,驅(qū)動程序來命令十倍于以往的力來使汽車停止下來。制動系統(tǒng)可以發(fā)揮上千磅的壓力來分配給四個制動器。
盤式制動器又稱為碟式制動器,這種制動器散熱快、重量輕、構造簡單、調(diào)整方便,特別是高負載時耐高溫性能好,制動效果穩(wěn)定,而且不怕泥水侵襲,在冬季和惡劣路況下行車,盤式制動比鼓式制動更容易在較短的時間內(nèi)令車停下。有些盤式制動器的制動盤上還開了許多小孔,加速通風散熱,提高制動效率。由制動器設計的一般原則,綜合考慮制動效能、制動效能穩(wěn)定性、制動間隙調(diào)整簡便性、制動器的尺寸和質(zhì)量及噪聲等諸多因素設計本產(chǎn)品。在設計中涉及到同步系數(shù)的選取、制動器效能因素的選取、制動力矩的計算,以及制動器主要元件選取,最后對設計的制動器進行校核計算。
關鍵詞:制動系統(tǒng),盤式制動器,同步系數(shù)
Abstract
The braking system is the most important system in car. If the brakes fail, the result can be disastrous. brakes are actually energy conversion devices, which convert the kinetic energy of the vehicle into thermal energy .when stepping on the brakes, the drivers commands a stopping force ten times as powerful as the force that puts the car in motion. the braking system can exert thousands of pounds of pressure on each of the four brakes.
The disc brake is called the small dish type brake, this kind of brake radiates quickly, the weight light, the structure simple, the adjustment is convenient, specially when high load the performance is good, applies the brake the effect to be stable, moreover did not fear the spate attack, under the winter and the bad state of roads the driving, the disc type applies the brake compared to the drum type to apply the brake to stop easily in the short time the vehicle. On some disc brake disc has also opened many eyelets, accelerates to ventilate the radiation, enhances the brake efficiency. The principle of the design to the brake system. Synthesize the consideration of the effect to the brake system, the stability of the effect to the brake system, the simple and convenient of the brake cleft adjusting, the size and quantity of the brake system, the same of the brake system and so on to design the product. In this design, adhere to synchronously the coefficient selects by examinations, affect factor selects of the brake system. The calculation of the brake moment, and the selects of the important parts of the brake system , check the whole design at last.
Keywords:brake system , disc brake,Synchronous coefficient
目 錄
摘 要 I
Abstract II
第1章 緒論 1
1.1盤式制動器的介紹與特點 1
1.2國內(nèi)汽車盤式制動器應用情況 2
第2章 制動器的結(jié)構與設計原則 4
2.1 汽車盤式制動器 4
2.2 捷達轎車盤式制動器的結(jié)構與工作原理 5
2.3 制動器設計的一般原則 7
2.3.1制動驅(qū)動機構的選擇 8
2.3.2制動管路的選擇 8
本章小結(jié) 10
第3章 制動器設計 11
3.1盤式制動器主要元件 11
3.1.1制動盤 11
3.1.2制動鉗 12
3.1.3制動塊 13
3.1.4摩擦材料 13
3.1.5制動器間隙 13
3.2同步附著系數(shù)的選取 14
3.3制動器效能因數(shù) 16
3.4制動器受力分析與力矩計算 16
3.4.1制動受力分析 16
3.4.2制動力矩的計算 17
3.5摩擦襯塊的摩擦特性 18
3.6制動器液壓驅(qū)動機構的設計計算 20
本章小結(jié) 21
第4章 校核與技術要求 22
4.1制動器的熱容量和溫升的核算 22
4.2制動器的調(diào)試 23
4.2.1制動盤的技術要求 23
4.2.2制動鉗技術總成要求 23
4.2.3前輪輪轂總成技術要求 24
4.3總成裝配拆卸與檢查的技術要求 25
本章小結(jié) 26
結(jié) 論 27
致 謝 28
參考文獻 29
附錄1 譯文 30
附錄2 英文參考資料 31
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