重型货车变速器设计.doc

重型货车变速器设计 摘 要 汽车变速器是用来协调发动机的转速和车轮的实际行驶速度的变速变矩 装置，用于发挥发动机的最佳性能。本文设计了常用货车用机械式变速器。 在阐述了机械式变速器的功用、要求的基础上，根据设计任务书的要求，选 择三轴式的设计方案，进行变速器主要参数的确定、齿轮的强度校核和齿轮 的几何尺寸计算，同时设计了变速器所用的锁环式同步器，确定了同步器的 主要参数，最后对变速器操纵机构进行设计，分析了齿轮的加工工艺。 本设计主导思想即在于设计以提高汽车的动力性和经济性指标，具备较 高的传动效率，操纵轻便，工作可靠，噪声小为目的的机械式变速器。 关键词：变速器，齿轮校核，工艺分析，同步器 The design of Heavy truck transmission ABSTRACT Automobile Transmission, is used to coordinate the speed of the engine and the wheels of the actual speed of the transmission device, used to play the best performance of engine. This designs commonly used truck with mechanical transmission. Describes the function of mechanical transmission and on the basis of the requirements, according to the requirements of the mission design, selection of three shaft type design, for the main parameters of transmission, gear strength checking and gear calculation of geometric size, while the design of transmission used by the lock ring synchronizer, identified synchronizer of main parameters, the transmission control mechanism design, analysis of the gear processing technology. Namely the leading thought of this design depends on motive force and economy quota in order to raise the automobile of design, and having the higher transmission efficiency, and operates lightly, work is reliable, the small mechanical type transmission that serve as the purpose of noise. Key Words：Transmission, Gear checking, process analysis, synchronizer 目 录 摘 要.................................................................. I ABSTRACT.............................................................. II 第一章 变速器的分类和种类 ............................................ 1 1.1 课题研究意义与背景 ............................................... 1 1.2 变速器的分类 ..................................................... 1 1.3 常见的变速器种类 ................................................. 2 第二章 机械式变速器的概述及方案确定 .................................. 5 2.1 变速器的功用及主要要求 ........................................... 5 2.1.1 变速器的功