重型汽车离合器参数选择设计_机械模具论文-免费论文网

重型汽车离合器参数选择设计

论文编号:JX816 论文字数:14436.页数:34 附任务书，开题报告，文献综述，外文翻译，CAD图

重型汽车离合器参数选择设计文件截图.png 重型汽车离合器.png

摘要

离合器是汽车传动系中直接与发动机相连接的总成，其功用是切断和实现对传动系的动力传递，以保证汽车起步时将发动机与传动系平顺地接合，确保汽车平稳起步；在换档时将发动机与传动系分离，减少变速器中换档齿轮之间的冲击；在工作中受到最大的动载荷时，能限制传动系所承受的最大转矩，防止传动系各零件因过载而损坏；有效地降低传动系中的振动和噪声。本论文通过对重型汽车离合器常见失效形式进行分析和计算，找出其失效的最主要原因是汽车单位摩擦面积滑摩功较大。参考已知车型数据，通过比较选择离合器的改进方案，对离合器摩擦片参数进行选择优化，增大离合器的摩擦面积，使汽车在平地起步时单位摩擦面积滑摩功小于其许用值，从根本上解决了离合器烧伤的问题。压盘驱动方式采用传力片式，使制造变得简单。压紧弹簧采用膜片弹簧形式，使汽车起步更加平稳，减轻传动系的负荷，有利于延长车和发动机的使用寿命。

关键词：重型汽车离合器摩擦片膜片弹簧

The Parameters Choose and Design of Heavy-duty Vehicles Clutch
Abstract
The clutch is the assembly which connect with each other at first hand between engine and transmission. Its effect is a cutting and realization to the power deliver of transmission, connecting together engine and transmissions are going smoothly while the car is going to start, insure the steady start of vehicle; While shifting gear , separates the clutch and gearbox, reduce to shift gear the impact between gear in the gearbox; While being dynamic load by the maximum in the operate, can limit the breakdown torque, pullout torque that the transmission department bear, keep each parts of transmission from damage because of the overload; Reduce vibrate and noise within the transmission availably. By analysing and calculating the failure mode on heavy vehicle clutch,The paper has concludes that the main reason of failure mode on heavy vehicle clutch is the big slip work per auto friction area.We can adopt a series of measures to make slip work per auto friction area smaller than allowed value when vehicle strats,and then radically solve the problem of clutch burning,it contain consulting some datas konwn,choosing chutch's improving plan by compare,optimizing the parameters of cluth disc,accretion of the friction area of clutch.In order to simply manufacture,the driving means of platen using passing force slice.At the same time, the platen springs adopt diaphragm spring, so vehicles start more steadily ,the load of powe train decreases,all of these make for extending the useful life of vehicle and engine.

Keywords：Clutch; Design; Friction plate;Diaphragm spring

目录
中文摘要 …………………………………………………………………………………… 1
英文摘要 …………………………………………………………………………………… 2
第一章绪论 ………………………………………………………………………………… 3
1.1 研究目的 …………………………………………………………………………… 3
1.2 研究背景 …………………………………………………………………………… 4
1.3 研究内容与方法 …………………………………………………………………… 4
第二章离合器基本结构及故障分析 ……………………………………………………… 5
2.1 系统概述 …………………………………………………………………………… 5
2.2 离合器的功用 ……………………………………………………………………… 5
2.3 离合器工作原理 …………………………………………………………………… 6
2.4 重型汽车离合器常见故障分析 …………………………………………………… 6
2.5 现代汽车离合器应满足的要求 …………………………………………………… 8
第三章离合器方案选择与基本参数确定 ………………………………………………… 9
3.1 设计平台技术参数 ………………………………………………………………… 9
3.2 初步确定离合器尺寸 ……………………………………………………………… 9
3.3 方案选择与基本参数确定 ………………………………………………………… 11
第四章零部件结构造型选择与设计计算 ………………………………………………… 15
4.1 从动盘总成设计 …………………………………………………………………… 15
4.2 压盘设计 …………………………………………………………………………… 21
4.3 离合器盖设计 ……………………………………………………………………… 24
4.4 膜片弹簧设计 ……………………………………………………………………… 24
4.5 离合器分离装置设计…………………………………………………………… 27
4.6 离合器操纵系统的设计 …………………………………………………………… 28
第五章总结 ………………………………………………………………………………… 30
参考文献……………………………………………………………………………………… 31
致谢………………………………………………………………………………………… 32