重型汽車離合器參數選擇設計

機械論文編號:JX816  論文字數:14436.頁數:34   附任務書，開題報告，文獻綜述，外文翻譯，CAD圖

目 錄
中文摘要  …………………………………………………………………………………… 1
英文摘要  …………………………………………………………………………………… 2
第一章 緒論 ………………………………………………………………………………… 3
 1.1 研究目的 …………………………………………………………………………… 3
 1.2 研究背景 …………………………………………………………………………… 4
 1.3 研究內容與方法 …………………………………………………………………… 4
第二章 離合器基本結構及故障分析 ……………………………………………………… 5
 2.1 系統概述 …………………………………………………………………………… 5
 2.2 離合器的功用 ……………………………………………………………………… 5
 2.3 離合器工作原理 …………………………………………………………………… 6
 2.4 重型汽車離合器常見故障分析 …………………………………………………… 6
 2.5 現代汽車離合器應滿足的要求 …………………………………………………… 8
第三章 離合器方案選擇與基本參數確定 ………………………………………………… 9
 3.1 設計平臺技術參數 ………………………………………………………………… 9
 3.2 初步確定離合器尺寸 ……………………………………………………………… 9
 3.3 方案選擇與基本參數確定 ………………………………………………………… 11
第四章 零部件結構造型選擇與設計計算 ………………………………………………… 15
 4.1 從動盤總成設計 …………………………………………………………………… 15
 4.2 壓盤設計 …………………………………………………………………………… 21
 4.3 離合器蓋設計 ……………………………………………………………………… 24
 4.4 膜片彈簧設計 ……………………………………………………………………… 24
 4.5 離合器分離裝置設計…………………………………………………………… 27
 4.6 離合器操縱系統的設計 …………………………………………………………… 28
第五章 總結 ………………………………………………………………………………… 30
參考文獻……………………………………………………………………………………… 31
致  謝………………………………………………………………………………………… 32

摘     要
 
    離合器是汽車傳動系中直接與發動機相連接的總成，其功用是切斷和實現對傳動系的動力傳遞，以保證汽車起步時將發動機與傳動系平順地接合，確保汽車平穩起步；在換檔時將發動機與傳動系分離，減少變速器中換檔齒輪之間的沖擊；在工作中受到最大的動載荷時，能限制傳動系所承受的最大轉矩，防止傳動系各零件因過載而損壞；有效地降低傳動系中的振動和噪聲。本論文通過對重型汽車離合器常見失效形式進行分析和計算，找出其失效的最主要原因是汽車單位摩擦面積滑摩功較大。參考已知車型數據，通過比較選擇離合器的改進方案，對離合器摩擦片參數進行選擇優化，增大離合器的摩擦面積，使汽車在平地起步時單位摩擦面積滑摩功小于其許用值，從根本上解決了離合器燒傷的問題。壓盤驅動方式采用傳力片式，使制造變得簡單。壓緊彈簧采用膜片彈簧形式，使汽車起步更加平穩，減輕傳動系的負荷，有利于延長車和發動機的使用壽命。
 
關鍵詞：重型汽車 離合器  摩擦片 膜片彈簧

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�瞣ut 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