【正文】 用計(jì)算機(jī)繪制圖紙。懸架的設(shè)計(jì)主要是通過(guò)汽車主要的質(zhì)量參數(shù)的分析，初步制定懸架系統(tǒng)的結(jié)構(gòu)方案。本次設(shè)計(jì)主要是 貨車的懸架設(shè)計(jì)。 I 輕型載貨汽車懸架的設(shè)計(jì) 摘要 ：汽車懸架是汽車的車架與車橋或車輪之間的一切傳力連接裝置的總稱。其作用是傳遞作用在車輪和車架之間的力和力扭，并且緩沖由不平路面?zhèn)鹘o車架或車身的沖擊力，并衰減由此引起的震動(dòng)，以保證汽車能平順地行駛。參照力帆 LFJ3048 的基本參數(shù)，根據(jù)載貨汽車懸架系統(tǒng)的要求，設(shè)計(jì)出符合國(guó)家標(biāo)準(zhǔn)的懸架系統(tǒng)。本設(shè)計(jì)的彈性元件選擇鋼板彈簧，經(jīng)過(guò)設(shè)計(jì)計(jì)算確定鋼板彈簧的主要尺寸和結(jié)構(gòu)形式。在設(shè)計(jì)過(guò)程中即要考慮設(shè)計(jì)的合理性，同時(shí)還要考慮結(jié)構(gòu)簡(jiǎn)單、成本低等因素。 關(guān)鍵詞 ： 貨車；懸架設(shè)計(jì) ；鋼板彈簧 II Dgsign carry cargo car of light tack suspension Zhaowei （ Vehicle Engineering 2021, Southwest Forestry University, Kunming Yunnan, 650224) Abstract:Automotive suspension is the frame and wheel axle or between all the force of the floorboard of the connected device, Its role is to transfer function between the wheel and the frame of torsional force and is buffered by the uneven pavement on the body and chassis of impact, resulting in reduced vibration, to ensure that the car can run smoothly. The design is mainly truck suspension design. My design is based Lifan LFJ3048 basic paramete, According to the requirements of truck suspension systems, suspension systems designed in line with national design is mainly through the analysis of the main quality parameters of the car, and determine the structure of the original suspension system the leaf spring elastic element, has been calculated to determine the size and structure of the main leaf spring. Through the data to calculate and determine the structure scheme and main parameters of suspension,and using puter drawing drawings .In the design process is to consider the rationality of the design should also consider the simple, low cost the calculated data show that suspension system meet the design requirements. Key words： truck； suspension design； plate sping目 錄 III 目 錄 摘要 .......................................................... I Abstract ..................................................... II 1 概述 ................................................................................................................... 1 懸架的功用和組成 ............................................................................... 1 懸架結(jié)構(gòu)形式的分析 ............................................................................ 2 懸架的設(shè)計(jì)方案 .................................................................................... 4 2 懸架基本參數(shù) 的確定 ...................................................................................... 5 固有頻率 ................................................................................................ 5 懸架的靜撓度 ........................................................................................ 5 懸架的動(dòng)撓度 ........................................................................................ 6 懸架的剛度 ............................................................................................ 6 懸架彈性特性 ........................................................................................ 6 后懸架主、副簧剛度的分配 ................................................................ 7 3 鋼板彈簧的設(shè)計(jì) .............................................................................................. 9 鋼板彈簧結(jié)構(gòu) 選擇 ................................................................................ 9 鋼板彈簧主要參數(shù)的選擇 .................................................................... 9 單個(gè)鋼板彈簧承受的載荷 ......................................................... 9 滿載弧高 ................................................................................... 10 鋼板彈簧長(zhǎng)度 L 的確定 .......................................................... 10 鋼板彈簧片數(shù) n 及厚度 h 的選擇 ........................................... 12 鋼板斷面尺寸形狀的確定 ....................................................... 12 鋼板彈簧各片長(zhǎng)度的確定 ....................................................... 12 鋼板彈簧的剛度驗(yàn)算 ......................................................................... 15 鋼板彈簧總成在自由狀態(tài)下的弧高及曲率半徑計(jì)算 ...................... 17 鋼板彈簧總成在自由狀態(tài)下的弧高 0H ................................. 17 目 錄 IV 鋼板彈 簧各片自由狀態(tài)下曲率半徑的確定 ........................... 18 彈簧的弧高 ............................................................................... 21 鋼板彈簧總成弧高的驗(yàn)算 ....................................................... 21 鋼板彈簧的強(qiáng)度驗(yàn)算 .......................................................................... 22 鋼板彈簧中心螺栓的選定 .................................................................. 23 鋼板彈簧襯套的分析和選型 .............................................................. 23 彈簧夾箍的選擇 .................................................................................. 24 4 卷耳的設(shè)計(jì) .................................................................................................... 26 卷耳形式的選擇 ................................................................................. 26 卷耳的強(qiáng)度驗(yàn)算 .................................................................................. 26 鋼板彈簧銷的強(qiáng)度驗(yàn)算 ...................................................................... 27 葉片的端部結(jié)構(gòu) .................................................................................. 28 5 減振器的設(shè)計(jì) ................................................................................................ 29 減振器的分析和選型 .......................................................................... 29 阻尼器基本參數(shù)的確定 ...................................................................... 30 相對(duì)阻尼系數(shù) ? ....................................................................... 30 伸張行程的阻尼系數(shù) s? .......................................................... 31 最大卸荷力 F 的確 定 ......................................................................... 31 筒式減振器主要尺寸參數(shù)的確定 ...................................................... 32 6 總結(jié) ....................................................... 33 參考文獻(xiàn) ..................................................... 34 指導(dǎo)教師簡(jiǎn)介 ................................................. 35 致 謝 ..................................................... 36 1 概述 第 1 頁(yè) 共 40 頁(yè) 1 概述