【正文】 本科生畢業(yè)設(shè)計 I 摘 要 本設(shè)計主要研究獵豹 CJY6470E 越野車前后懸架的設(shè)計分析及方法，同時兼顧舒適性和運貨能力。 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，以保證汽車能平順地行駛。汽車懸架性能是影響汽車行駛平順性、操縱穩(wěn)定性和行駛速度的重要因素。 本設(shè)計前懸架采用麥弗遜獨立懸架，后懸架采用縱置鋼板彈簧。經(jīng)過查閱大量的資料，以及結(jié)合所學(xué)知識，對 前、后懸架進行方案論證、結(jié)構(gòu)方案分析以及設(shè)計計算。包括對減振器、螺旋彈簧、鋼板彈簧、導(dǎo)向機構(gòu)及橫向穩(wěn)定桿的設(shè)計計算。 關(guān)鍵詞 ：懸架；麥弗遜；減震器；鋼板彈簧；螺旋彈簧 本科生畢業(yè)設(shè)計 II Abstract This design mainly research the cheetah CJY6470E suvs for design and analysis of both the front and rear suspension method, Both fort and delivery capacity. Automotive suspension is the frame and wheel axle or between all the force of the floor board of the connected device, the effect is the transfer function between the wheels and the frame of the torsion force and the force, and the buffer by the uneven road surface to the fra me or the impact of the body, and the attenuation caused by vibration, to ensure that the car ca n run smoothly. Automobile suspension performance is the car ride fort, handling sta bility and speed of important factor. This design USES the macpherson independent suspension, front suspension after leaf spring suspension using longitudinal. Through access to a huge mass of data, and bining with the knowledge, to scheme parison before and after the suspension, structure schem e analysis and design calculation. Including for shock absorber and coil spring, leaf spring, the calculation in the design of steering mechanism and the lateral stabilizer bar. Key words: suspension。 The paper。 Shock absorber。 Leaf spring。 Helical spring 本科生畢業(yè)設(shè)計 目 錄 摘要 .................................................................................................................. I Abstact ............................................................................................................. II 第 1 章 緒論 ....................................................................................................1 課題研究目的和意義 ............................................................................................... 1 課題研究現(xiàn)狀 ........................................................................................................... 1 研究方法 ................................................................................................................... 4 設(shè)計的擬解決的主要問題 ....................................................................................... 4 預(yù)期結(jié)果 ................................................................................................................... 4 第 2 章 懸架結(jié)構(gòu)分析及選擇 ....................................................................................... 5 懸架的作用 ............................................................................................................... 5 懸架的組成 ............................................................................................................... 5 懸架設(shè)計要求 ........................................................................................................... 8 懸架的分類及特點 ................................................................................................... 8 非獨立懸掛系統(tǒng) ............................................................................................ 9 獨立懸掛系統(tǒng) ................................................................................................ 9 比較選型 ...................................................................................................... 12 本章小結(jié) ................................................................................................................. 12 第 3 章 懸架主要參數(shù)的布置 ..................................................................................... 13 懸架偏頻的選擇 ..................................................................................................... 14 懸架的靜撓 度 fc .................................................................................................... 14 懸架動撓度 ............................................................................................................. 15 懸架彈性特性 ......................................................................................................... 15 本章小結(jié) ................................................................................................................. 16 第 4 章 前麥弗遜獨立懸架的設(shè)計 ............................................................................ 17 彈性元件的設(shè)計與校核 ......................................................................................... 17 本科生畢業(yè)設(shè)計 彈簧形式、材料的選擇 .............................................................................. 17 螺旋彈簧的直徑 .......................................................................................... 17 其他參數(shù)的計算 .......................................................................................... 17 彈簧的校驗 .................................................................................................. 18 減振器的設(shè)計與校核 ............................................................................................. 19 相對阻尼系數(shù) Ψ的確定 ............................................................................. 20 阻尼系數(shù) δ的確定 ...................................................................................... 20 最大卸荷力 0F 的確定 ................................................................................. 21 筒式減振器工作缸直徑 D 的確定 ............................................................. 21 筒式減振器活塞行程的確定 ...................................................................... 21 液壓缸壁厚、缸蓋、活塞桿長度的計算及校核 ...................................... 21 其他元件的選擇 .......................................................................................... 29 液壓缸主要零件的材料和技術(shù)要求 .......................................................... 30 導(dǎo)向機構(gòu)的布置參數(shù) ................