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KD1080型载货汽车设计（变速器总成设计）
摘要.doc
目录.doc
符号说明.doc
设计说明书.doc[21000字，55页]
翻译.doc
变速器装配图.dwg
拨叉.dwg
箱体.dwg
说明书
齿轮.dwg
摘 要
发动机的输出转速非常高，最大功率及最大扭矩在一定的转速区出现。为了发挥发动机的最佳性能，就必须有一套变速装置，来协调发动机的转速和车轮的实际行驶速度。变速器可以在汽车行驶过程中，在发动机和车轮之间产生不同的变速比，通过换挡可以使发动机工作在其最佳的动力性能状态下。
变速器作为汽车的一个重要组成部分，是用来改变发动机传到驱动轮上的转矩和转速，目的是在原地起步、爬坡、转弯、加速等各种行驶工况下使汽车获得不同的牵引力和速度。
本次设计的变速器是一款手动中间轴式4+1挡机械式变速器。为了保证轴的刚度要求，将一挡和倒挡布置在变速器的最右边，为了使结构更紧凑、合理，倒挡采用中间轴齿轮。换挡机构全部采用同步器进行换挡，变速器采用直接操纵机构，在其上设置了互锁、倒挡锁等一套锁止装置，使驾驶员能够安全、迅速的对变速器操纵, 结合总体的要求操纵机构形式选用直接操纵机构形式。本次设计的变速器即满足了汽车必要的动力性也满足了其经济性的指标。最后通过对齿轮、轴、键、轴承等的校核，其变速器的尺寸及其部件的强度都满足设计要求。
关键词：变速器,设计,中型载货汽车,传动比
KD1080 TRUCK DESIGN
(THE GENERAL DESIGHN OF TRANSMISSION)
ABSTRACT
The output of the engine speed is very high, maximum power and maximum torque occurs at a certain speed zone. In order to play the best performance of the engine, it must be a variable speed device, to coordinate engine speed and the actual wheel speed. Transmission can be in the car driving the process, between the engine and the wheels have different gear ratio, the engine can work through the shift in the dynamic performance of its best state.
Transmission as an important part of the car is used to change the engine reached the driving wheel torque and rotational speed on the aim of starting in place, climbing, cornering, acceleration and other driving situation, vehicle access to the different traction and speed.
The transmission is a manual designed for intermediate shaft 4 +1 gear mechanical transmission. To ensure the axial stiffness requirements, the layout of a block and reverse gear in the transmission of the far right, in order to make the structure more compact and reasonable use of the intermediate shaft gear reverse gear. Shifting agencies all use synchronizer for shifting, transmission by direct manipulation of institutions, in their last set, interlocking, reverse gear lock of a locking device so the driver can safely, quickly on the transmission control, combined with the overall requirements of direct manipulation of institutional forms used form of control mechanism. The design of the transmission that is necessary to meet the dynamic nature of the automobile also meet its economic targets. Finally, through the gears, shafts, keys, bearings, etc. checked, the size of its transmission and its components have the strength to meet the design requirements.
KEY WORDS: Transmission, Design, Medium truck, Speed ratio
目录
前言························································· 1
第一章 概述 ·················································· 2
第二章 变速器传动机构布置 ···································· 4
§2.1 传动机构布置方案分析 ··································· 4
§2.2 零部件结构方案分析 ····································· 9
第三章 变速器主要参数的选择 ································· 12
§3.1 中心距A ················································ 13
§3.2 齿轮参数的选取 ········································· 13
§3.3 各挡齿轮齿数的分配及传动比计算························ 15
第四章 变速器的设计与计算 ······························ 19
§4.1 轴的计算与校核 ········································· 19
§4.2 齿轮的计算与校核 ······································ 22
§4.3 轴承的计算与校核 ······································ 25
§4.4 键的校核计算 ··········································· 26
第五章 同步器的设计 ··································· 28
第六章 变速器操纵机构设计 ······························· 30
结 论 ··················································· 31
参考文献 ············································ 32
致 谢 ·················································· 33
附 录 ················································· 34
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