KD1060型載貨汽車設(shè)計（制動系統(tǒng)設(shè)計）

KD1060型載貨汽車設(shè)計（制動系統(tǒng)設(shè)計）,kd1060,載貨,汽車,設(shè)計,制動,系統(tǒng) KD1060型載貨汽車設(shè)計（制動系設(shè)計）摘 要制動系至少有兩套制動裝置即行車制動裝置和駐車制動裝置。行車制動裝置是用作強制行駛中的汽車減速或停車，并使汽車在下坡時保持適當(dāng)?shù)姆€(wěn)定車速。駐車制動裝置是用作是汽車停在原地或坡道上。制動性能是車輛最重要的性能之一，車輛制動系統(tǒng)性能的好壞直接影響到車輛行駛的安全性。因此，有必要對車輛制動系統(tǒng)進(jìn)行詳細(xì)的研究。本設(shè)計對鼓式制動器的結(jié)構(gòu)形式進(jìn)行綜合的分析，對六種形式的優(yōu)缺點作了比較，根據(jù)對各種制動器方案對比分析，本設(shè)計采用了領(lǐng)從蹄式制動器。其主要優(yōu)點是：制動器的效能及穩(wěn)定性均處于中等水平，但由于其在汽車前進(jìn)與倒退時的制動性能不變，且結(jié)構(gòu)簡單，造價較低，也便于附裝駐車驅(qū)動機構(gòu)；易于調(diào)整蹄片與制動鼓之間的間隙。本次設(shè)計中，行車制動系采用人力液壓式制動；駐車制動的驅(qū)動機構(gòu)為手動駐車；串聯(lián)雙腔制動主缸，雙回路結(jié)構(gòu)。前后制動器都采用領(lǐng)從蹄式鼓式制動器。設(shè)計中根據(jù)總體參數(shù)和制動器的結(jié)構(gòu)與參數(shù)，通過理論推導(dǎo)和計算，對該車制動時的制動力和制動力矩等做了細(xì)致的分析。關(guān)鍵詞：制動系統(tǒng)，制動器，行車制動系，應(yīng)急制動KD1060 TRUCK DESIGN（BRAKE SYSTEM）ABSTRACTBreak system consists of service break arrangement and parking break arrangment.Service break system used to force the vehicle to show down and keep a steady speed when downgrading.The parking break system intended to hold the vehicle immovable when parked on an incline.The braking capability is one of the most important performances of vehicles, and the capability of the brake system directly affects the vehicles safety. Therefore, it is necessary to make a research about the vehicles braking system in detail.This design carries on the synthesis analysis to the drum type of the brake structural style. It compares the advantages and disadvantages of six kinds of forms, and according to this contrast analysis of the kinds of the brake plan, the horseshoe types brake is adopted. Its main merits are that although the brake efficiency and the stability are in the medium level, because the automobile braking performance is invariable when going ahead and going backwards, the construction cost is lower, and it attaches installs in the vehicles driving mechanism and adjusts the gap between the brake shoe patch and the brake drum easily.The design uses manual hydraulic break and series connected double cavity general pump. Both the front and rear break is double leading-rear break.According to the vehicles parameters and the breaks parameter,after theory analytic and calculating, we analyzed the breaking force and direction stability when breaking specifically.KEY WORD：braking system，brake ，service break system, emergency brakeVI車輛與動力工程學(xué)院畢業(yè)設(shè)計說明書常用符號表制動器因數(shù)汽車承受的總地面制動力汽車制動器制動力輪胎與地面間的附著力制動器摩擦副的摩擦系數(shù)汽車重力重力加速度汽車質(zhì)心高度制動減速度汽車軸距汽車總重量制動蹄摩擦片與鼓之間的法向力制動蹄的張開力車輪有效半徑制動器對車輪的制動力矩汽車行駛速度地面對車輪的法向力汽車制動器制動力分配系數(shù)輪胎與地面間的附著系數(shù)同步附著系數(shù)目 錄第一章 概 述1第二章 制動系的結(jié)構(gòu)形式及其選擇32.1制動器結(jié)構(gòu)形式簡介32.2制動器的結(jié)構(gòu)形式選擇42.3制動驅(qū)動機構(gòu)的結(jié)構(gòu)型式選擇82.4 液壓式制動驅(qū)動機構(gòu)雙回路系統(tǒng)方案選擇10第三章 制動系的主要參數(shù)及其選擇 113.1與設(shè)計相關(guān)的整車參數(shù)的確定113.2制動力及其分配系數(shù)113.3同步附著系數(shù)143.4最大制動力矩163.5制動器的結(jié)構(gòu)參數(shù)與摩擦系數(shù)17第四章 制動器的設(shè)計計算204.1制動器因數(shù)的計算204.2張開力計算224.3摩擦襯片的磨損特性計算224.4駐車制動計算244.5 汽車制動性能計算25第五章 液壓制動驅(qū)動機構(gòu)的設(shè)計計算275.1制動輪缸直徑與工作容積的確定275.2制動主缸直徑與工作容積確定285.3制動踏板力F與踏板行程的設(shè)計計算285.4真空助力器295.5制動力分配的調(diào)節(jié)裝置31第六章 制動器主要零部件的結(jié)構(gòu)設(shè)計與強度計算306.1制動器主要零部件的結(jié)構(gòu)設(shè)計306.2制動器主要零件強度計算 31結(jié)論33參考文獻(xiàn)34致謝36