液力传动变速箱的设计.doc

图书分类号： 密 级： 毕业设计(论文) 液力传动变速箱的设计与仿真 THE HYDRAULIC TRANSMISSION DESIGN AND SIMULATION 学生姓名 学院名称 专业名称 指导教师 20**年 5月 27日 摘要 本课题是设计一个液力传动变速箱，液里变速箱是自动挡汽车最重要的组成部分。 本次设计是专门设计一个液力传动变速箱。该变速箱为四级变速，分为前进两档和后退两档。该型变速箱由液力变矩器，液力操纵阀，液力离合器，箱体及齿轮副等组成。传动中液力变矩器是以液压油为传动介质的，由于高压下液压油分子之间有相对运动，所以传动比较平稳。而且可以自动适应，吸收应为外载荷变化引起的震动冲击。可以大大增加发动机的寿命。而变速箱中的湿式多片离合器是由液压油控制的，所以换挡时比较平稳，而且对传动齿轮的冲击小，噪声低，传递平稳，给人操纵简单舒适的感觉。 该设计包括变速箱的整体设计、机构部分设计、液压部分的设计以及使用基于proe的三维仿真。 关键字：液力传动变速箱；液力变矩器；液压离合器；液力操纵阀 Abstract This topic is to design a hydraulic transmission gearbox, automatic transmission fluid in the gearbox is the most important part of the car.This design is specifically designed to drive a hydraulic transmission. The four speed gearbox is divided into two steps forward and two steps back. This type of transmission by the torque converter, hydraulic control valve, hydraulic clutch, gear box, and so on. Transmission torque converter is a hydraulic oil for the transmission medium, as high pressure hydraulic oil relative motion between molecules, so the drive is relatively stable. And can automatically adapt to changes in external load should absorb the vibration caused by impact. Can greatly increase the life of the engine. The transmission of the wet multi-plate clutch controlled by the hydraulic oil, so the time shift is relatively stable, but the impact on the transmission gears, low noise, smooth transmission, giving the manipulation of simple comfort.The design includes the overall design of the gearbox, body part of the design, hydraulic part of the design and the use of three-dimensional simulation based proe. Keywords: hydraulic transmission gearbox torque converter hydraulic clutch hydraulic control valve 目 录 摘要 I Abstract II 1绪论 2 1.1本课题主要研究内容 2 1.1.1 自动变速箱的发展 2 1.1.2变速箱的发展历史 3 1.2液力耦合器简介 7 1.2.1耦合器的结构 8 2变速箱设计 11 2.1变速箱设计计算 11 2.1.1主要性能参数 11 2.1.2设计要求 11 2.2变速箱组成 11 2.2.1变速箱箱体 11 2.3变速箱传动方案设计 12 2.4变速器主要参数的选择与齿轮设计 12 2.4.1档位数和传动比 12 2.4.2中心距 13