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車輛與動(dòng)力工程學(xué)院畢業(yè)設(shè)計(jì)說(shuō)明書(shū)
3噸柴油動(dòng)力貨車設(shè)計(jì)（車架、制動(dòng)系設(shè)計(jì)）
摘 要
設(shè)計(jì)任務(wù)是：3噸柴油動(dòng)力貨車車架與制動(dòng)系統(tǒng)。根據(jù)本次設(shè)計(jì)的任務(wù)分別對(duì)各種類型的車架、制動(dòng)器進(jìn)行結(jié)構(gòu)型式分析，確定設(shè)計(jì)方案。
車架設(shè)計(jì)部分：采用邊梁式前后等寬車架，由于車架的作用是增加車身的強(qiáng)度和剛度，以承受彎曲和扭曲載荷。本部設(shè)計(jì)的重點(diǎn)是其結(jié)構(gòu)設(shè)計(jì)，重點(diǎn)對(duì)其縱橫梁的布置，確定其尺寸參數(shù),給出了強(qiáng)度計(jì)算方法并作精確的校核計(jì)算，對(duì)車架應(yīng)力作了分析，驗(yàn)證了車架強(qiáng)度和剛度。
制動(dòng)系統(tǒng)設(shè)計(jì)部分：通過(guò)制動(dòng)器的各個(gè)主要部件的受力分析及制動(dòng)力的大小和車輪尺寸確定制動(dòng)蹄片的大小及制動(dòng)輪缸的直徑；制動(dòng)器均采用鼓式制動(dòng)器: 前制動(dòng)器是雙領(lǐng)蹄式制動(dòng)器，后制動(dòng)器是領(lǐng)從蹄式制動(dòng)器，其驅(qū)動(dòng)機(jī)構(gòu)采用雙回路結(jié)構(gòu);駐車制動(dòng)采用手動(dòng)駐車，其驅(qū)動(dòng)機(jī)構(gòu)是機(jī)械式驅(qū)動(dòng)機(jī)構(gòu)。通過(guò)理論的推倒計(jì)算，并根據(jù)總體參數(shù)和制動(dòng)器的結(jié)構(gòu)參數(shù)，對(duì)該車的制動(dòng)性能等做細(xì)致的分析。
關(guān)鍵詞：車架，制動(dòng)系統(tǒng)，制動(dòng)器，行車制動(dòng)，駐車制動(dòng)。
THREE TON DIESEL-POWERED LORRY DESIGN(FRAME、BRAKING SYSTEM DESIGN)
ABSTRACT
The tasks of design are: 3 ton diesel-powered lorry frame and braking system design. According to the design of the respective tasks of all types of frame, brake structural pattern analysis, design.
Frame design: using side rail type frame which is the same length between front and after, the frame is the role of the body to increase strength and rigidity, and to withstand bending and twisting load. This section is designed to focus on the structural design, focusing on its vertical beam settings, to determine its size, given the strength calculation method for precise calculations and checks made on the frame stress analysis, test the strength and stiffness of the frame.
Braking System design: Brake through each of the major components of the braking force and Analysis of the size and dimension of the wheel brake pads and round brake cylinder diameter size; The vehicle brake brakes forms is the former floating caliper brake, the brakes after leading from the foot brake, drive double-loop structure; Parking brake manually in the car, drive a mechanical drive. Through theoretical to the implementation, according to the overall parameters and structural parameters brake, of the car's braking performance so meticulous analysis.
KEY WORDS: frame,braking system , brakes , service brake ,parking brake.
目 錄
第一章 前 言 ········································· 4
第二章 車架設(shè)計(jì) ······································ 5
§2.1 概述 ··········································· 5
§2.2 車架的結(jié)構(gòu)設(shè)計(jì)································ 5
§2.3 車架的制造工藝及材料 ························ 8
§2.4 車架的計(jì)算····································· 9
§2.5 車架實(shí)驗(yàn) ······································15
第三章 制動(dòng)系統(tǒng)設(shè)計(jì) ·································17
§3.1 概述 ········································17
§3.2 制動(dòng)器的結(jié)構(gòu)設(shè)計(jì)······························18
§3.3 制動(dòng)器的設(shè)計(jì)計(jì)算······························22
§3.4 制動(dòng)驅(qū)動(dòng)機(jī)構(gòu)及其設(shè)計(jì)計(jì)算·····················31
§3.5 應(yīng)急制動(dòng)和駐車制動(dòng)的計(jì)算···················· 34
§3.6 制動(dòng)器主要零件的結(jié)構(gòu)設(shè)計(jì)···················· 36
第四章 總結(jié) ·········································38
參考文獻(xiàn) ··············································39
致 謝··················································40
英文資料················································41
譯 文··················································48
IV