【正文】 鼓式制動器；建模與設計；制動效能因數(shù)；制動力矩；制動溫升 XXX 畢業(yè)設計 (論文 ) II Abstract Major automotive braking system is an important part of the system. The brake system consists of brake shoes, brake drums, linings, etc. High performance braking hoof drum brakes are still widely used in the modern car. The main structure of the friction type drum brakes were related to the modeling andcalculation. The design process is mainly based on brake products design and development, andbined with the related theory of design requirements. According to automotive data are given and the default design rules, a key parameter in the design of shape and we need the brake. We use the calculated the brake torque, the strain distribution, efficiency factor, pressure distribution, braking required reducing speed and braking temperature changes and other data to design parts of we use UG to draw our design of parts and each other and together. Keywords: Drum brake Modeling and design Braking efficiency factor Braking deceleration brake temperature rise 全套圖紙 外文翻譯 扣扣 : 1411494633 XXX 畢業(yè)設計 (論文 ) 3 目 錄 摘要 .................................................................................................................................... I Abstract ............................................................................................................................ II 1 緒 論 ........................................................................................................................... 1 引 言 .................................................................................................................... 1 選題背景與意義 .................................................................................................. 1 研究現(xiàn)狀 .............................................................................................................. 2 研究內(nèi)容以及目的 .............................................................................................. 3 2 鼓式制動器結(jié)構形 式及選擇 ...................................................................................... 4 鼓式制動器的形式結(jié)構 ....................................................................................... 4 鼓式制動器按蹄的屬性分類 .............................................................................. 4 領從蹄式制動器 ......................................................................................... 5 雙領蹄式制動器 ......................................................................................... 6 雙向雙領蹄式制動器 ................................................................................. 6 單向増力式制動器 ..................................................................................... 7 雙向増力式制動器 ..................................................................................... 7 3 制動系的主要參數(shù)及其選擇 .....................................................................................11 制動力與制動力分配系數(shù) .................................................................................11 同步附著系數(shù) .................................................................................................... 15 制動器最大制動力矩 ......................................................................................... 16 鼓式制動器的結(jié)構參數(shù)與摩擦系數(shù) ................................................................ 17 制動鼓內(nèi)徑 D 或半徑 R .......................................................................... 17 摩擦襯片寬度 b 和包角 β........................................................................ 18 摩擦襯片起始角 β0 .................................................................................. 19 制動器中心到張開力 P 作用線的距離 a................................................ 19 制動蹄支承點位置坐標 k 和 c ................................................................ 19 襯片摩擦系數(shù) f ........................................................................................ 19 4 制動器的設計計算 .................................................................................................... 20 領 —從蹄制動器制動器因素計算 ..................................................................... 20 制動驅(qū)動機構的設計計算 ................................................................................. 21 所需制動力計算 ........................................................................................ 21 制動 踏板力驗算 ........................................................................................ 22 確定制動輪缸直徑 ................................................................................... 22 輪缸的工作容積 ........................................................................................ 23 XXX 畢業(yè)設計 (論文 ) 4 制動器所能產(chǎn)生的制動力計算 ............................................................... 24 制動蹄片上的制動力矩 ..................................................................................... 24 制動蹄上的壓力分布規(guī)律 ................................................................................. 28 摩擦襯片的磨損特性計算 ................................................................................ 30 制動器的熱容量和溫升的核算 ........................................................................ 33 駐車制動的計算 ................................................................................................ 34 5 制動器主要零件的結(jié)構設計 .................................................................................... 36 制動鼓 ................................................................................................................. 36 制動蹄 ................................................................................................................ 37 制動底板 ............................................................................................................ 37 制動蹄的支承 .................................................................................................... 38 制動輪缸 ............................................................................................................ 38 摩擦材料