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目 錄
1.緒論 .....................................................1
1.1往復(fù)式給煤機(jī) ............................................1
1.2往復(fù)式給煤機(jī)防竄倉(cāng)裝置的設(shè)計(jì)研究........................2
1.2.1 方案構(gòu)思....................................... .2
1.2.2 工作原理 ........................................ 2
1.3K4型給煤機(jī)的技術(shù)改造.................................. .3
1.3.1 存在的問(wèn)題......................................3
1.3.2 改進(jìn)措施.......................................3
1.3.3 經(jīng)濟(jì)效益........................................5
2.電動(dòng)機(jī)和減速器的選用.................................... . 6
2.1位移分析...............................................6
2.2 速度分析..............................................7
2.3 加速度分析............................................7
2.4往復(fù)式給煤機(jī)的工作簡(jiǎn)述..................................9
2.4.1往復(fù)式給煤機(jī)的運(yùn)行阻力...........................10
2.4.2往復(fù)式給煤機(jī)的運(yùn)行阻力由以下公式計(jì)算.............10
2.4.3電動(dòng)機(jī)功率的計(jì)算.................................11
2.5 電動(dòng)機(jī)的選型...........................................12
2.6 減速器的傳動(dòng)比.........................................13
2.7減速器的選用............................................13
3聯(lián)軸器的選型................................................15
3.1聯(lián)軸器的轉(zhuǎn)矩...........................................15
3.2聯(lián)軸器的理論轉(zhuǎn)矩計(jì)算...................................16
3.3聯(lián)軸器的計(jì)算轉(zhuǎn)矩計(jì)算...................................16
3.4強(qiáng)度驗(yàn)算...............................................16
3.4.1抗剪強(qiáng)度驗(yàn)算....................................17
3.4.2壓強(qiáng)驗(yàn)算........................................17
4輥輪軸的設(shè)計(jì)計(jì)算............................................18
4.1輥輪軸的設(shè)計(jì)計(jì)算.......................................18
4.2輥輪軸強(qiáng)度的校核.......................................22
5液壓缸的設(shè)計(jì)................................................25
5.1 料倉(cāng)口的尺寸設(shè)計(jì).......................................25
5.2液壓缸的受力分析.......................................25
5.3液壓缸的推力和速度.....................................26
5.4液壓缸的主要尺寸計(jì)算...................................28
5.4.1液壓缸內(nèi)徑及活塞桿直徑的確定.....................28
5.4.2油液作用在單位面積上的壓強(qiáng)......................28
5.4.3液壓缸的理論作用力確定..........................29
5.4.4確定液壓缸的壁厚................................30
5.4.5缸筒壁厚驗(yàn)算....................................30
5.5活塞桿的設(shè)計(jì)...........................................31
5.5.1活塞桿的結(jié)構(gòu)、尺寸的確定........................31
5.5.2活塞桿的直徑的強(qiáng)度校核..........................32
5.5.3活塞桿彎曲穩(wěn)定性驗(yàn)算............................32
5.5.4活塞桿的結(jié)構(gòu)....................................33
5.5.5活塞桿的材料和技術(shù)要求..........................34
5.6活塞桿的導(dǎo)向套、密封和防塵.............................35
5.6.1結(jié)構(gòu)............................................35
5.6.2導(dǎo)向套的材料....................................36
5.6.3導(dǎo)向套長(zhǎng)度的確定................................36
5.7活塞...................................................36
5.7.1活塞的結(jié)構(gòu)型式..................................36
5.7.2活塞與活塞桿的連接...............................37
5.7.3活塞的密封.......................................37
5.7.4活塞的材料.......................................37
5.7.5活塞的尺寸及加工精度.............................38
5.7.6活塞的最小導(dǎo)向長(zhǎng)度H及液壓缸行程S的確定.........38
5.8液壓缸油口直徑的確定..................................38
5.9缸筒底部厚度計(jì)算........................................40
5.10液壓缸的流量的確定.....................................44
5.11液壓缸的密封...........................................45
6液壓泵站的設(shè)計(jì)...............................................48
6.1液壓泵的選用............................................48
6.2液壓系統(tǒng)圖的擬訂........................................52
6.2.1液壓回路的選擇...................................52
6.2.2油箱選型.........................................53
6.3箱壁、清洗孔、吊耳、液位計(jì)..............................56
6.4閥的選型................................................58
7小結(jié).........................................................60
7.1K式往復(fù)給煤機(jī)常見(jiàn)機(jī)械故障分析處理.....................60
7.1.l K式往復(fù)式給煤機(jī)構(gòu)造原理......................60
7.1.2 常見(jiàn)機(jī)械故障分析及處理措施.....................60
7.2 結(jié)語(yǔ)............................................. ....60
參考資料 ............................................... .....61
英文翻譯.....................................................62
致 謝 .............................................. ..... ...70