畢業(yè)設(shè)計(jì)（論文）重型貨車液壓助力轉(zhuǎn)向系統(tǒng)結(jié)構(gòu)設(shè)計(jì)說(shuō)明書

1、www.88doc88.comwww.yanziedu.com目錄前言......................................................11 汽車主要參數(shù)的選擇......................................21.1 汽車主要尺寸的確定....................................21.1.1 軸距 L ...................

2、.................................................................21.1.2 前輪距 B1 和后輪距 B2..........................................................31.1.3 外廓尺寸.................................................................

3、...............41.1.4 前懸 LF 和后懸 LR.................................................................41.2 汽車質(zhì)量參數(shù)的確定........................................................................51.2.1 整車整備質(zhì)量m0 ...................

4、..................................................51.2.2 汽車的載客量和裝載質(zhì)量.......................................................61.2.3 質(zhì)量系數(shù)................................................................................61.2.4

5、 汽車總質(zhì)量 ............................................................................71.2.5 軸荷分配................................................................................72 轉(zhuǎn)向系的概述及主要性能參數(shù)..............................

6、92.1 轉(zhuǎn)向系的概述....................................................................................92.1.1 轉(zhuǎn)向操縱機(jī)構(gòu).........................................................................92.1.2 轉(zhuǎn)向傳動(dòng)機(jī)構(gòu)..........................

7、.............................................102.1.3 轉(zhuǎn)向器..................................................................................102.1.4 轉(zhuǎn)角及最小轉(zhuǎn)彎半徑............................................................112.1

8、.5 對(duì)轉(zhuǎn)向系的要求 ...................................................................132.2 轉(zhuǎn)向系主要性能參數(shù)......................................................................13www.88doc88.comwww.yanziedu.com4.3.3 動(dòng)力缸缸筒壁厚 t 的計(jì)算.....

9、.................................................304.4 分配閥的參數(shù)選擇與設(shè)計(jì)計(jì)算......................................................304.4.1 預(yù)開隙 1 e ...............................................................................304

10、.4.2 滑閥總移動(dòng)量e ....................................................................314.4.3 局部壓力降 p ? ......................................................................314.4.4 油液流速的允許值[v]................................

11、............................324.4.5 滑閥直徑 d...........................................................................324.4.6 滑閥在中間位置時(shí)的油液流速 v...........................................324.4.7 分配閥的泄漏量 Q ? .................

12、.............................................334.5 回位彈簧的預(yù)緊力和反作用閥直徑的確定.................334.6 油泵排量與油罐容積的確定.............................344.7 液壓動(dòng)力轉(zhuǎn)向的工作特性...............................355 轉(zhuǎn)向傳動(dòng)機(jī)構(gòu)設(shè)計(jì)...........................

13、............375.1 轉(zhuǎn)向傳送機(jī)構(gòu)的臂、桿與球銷 ...........................385.2 轉(zhuǎn)向操縱機(jī)構(gòu)的防傷安全措施 ........................................................................396 經(jīng)濟(jì)技術(shù)路線分析………………………………………………….427 結(jié)論...............................