采煤機截割部的設計

機械論文編號:JX349  所有圖紙,任務書,外文翻譯。論文字數(shù):34752.頁數(shù):94

目    錄

1 緒論 ....................................................................1
1.1 采煤機發(fā)展歷史 ........................................................1
1.1.1 國外采煤機的發(fā)展歷史 ................................................1
1.1.2 國內(nèi)采煤機的發(fā)展歷史 ................................................1
1.2 電牽引采煤機的技術特點及趨勢.......................................... 4
1.2.1 電牽引采煤機的發(fā)展趨勢 ..............................................4
1.2.2 國內(nèi)電牽引采煤機的技術特點及發(fā)展趨勢................................ 4
1.3 采煤機的類型及組成.................................................... 5
1.3.1 采煤機的類型 ........................................................5
1.3.2 采煤機的組成 ........................................................6
2 采煤機的總體方案 ........................................................7
2.1 采煤機總體方案 ........................................................7
2.1.1 采煤機總體結構的確定................................................ 7
2.1.2 采煤機的適用范圍 ....................................................7
2.1.3 采煤機的主要技術參數(shù)................................................ 7
2.1.4 采煤機整機主要特點.................................................. 8
2.2 截割部主要結構的確定 ..................................................8
2.3 截割部電動機的選擇.................................................... 12
2.4 總傳動比及傳動比的分配 ................................................12
2.4.1 總傳動比的確定 ......................................................12
2.4.2 傳動比的分配 ........................................................13
3 截割部的設計及計算...................................................... 14
3.1 各級傳動的轉速、功率、轉矩............................................ 14
3.2 截割部齒輪的設計計算.................................................. 15
3.2.1 齒輪1和齒輪2的設計計算 ..............................................15
3.2.2 齒輪4和齒輪5的設計計算 ..............................................19
3.2.3 齒輪6和齒輪7的設計計算 ..............................................24
3.2.4 齒輪1至齒輪9的幾何尺寸匯總表 ........................................28
3.3 截割部行星機構的設計計算.............................................. 30
3.3.1 齒輪材料熱處理工藝及制造工藝的選定 ..................................30
3.3.2 行星機構中主要參數(shù)的確定 ............................................30
3.3.3 行星機構中各齒輪幾何尺寸的計算 ......................................33
3.3.4 嚙合要素驗算........................................................ 34
3.3.5 齒輪強度驗算 ........................................................35
3.4 軸的設計及校核........................................................ 43
3.4.1 截Ⅲ軸的設計與校核.................................................. 43
3.4.2 行星齒輪軸的校核.................................................... 50
3.5 軸承的壽命校核 ........................................................51
3.5.1 截Ⅲ軸軸承壽命的計算 ................................................51
3.5.2 行星輪軸承壽命的計算 ................................................52
3.6 花鍵聯(lián)接強度校核 ......................................................52
3.6.1 截Ⅰ軸花鍵校核 ......................................................52
3.6.2 截Ⅲ軸花鍵校核 ......................................................53
3.6.3 截Ⅳ軸花鍵校核 ......................................................54
3.6.4 太陽輪軸花鍵校核 ....................................................54
3.7 滾筒截齒配置 ..........................................................55
3.7.1 滾筒寬度............................................................ 55
3.7.2 螺旋葉片頭數(shù)確定 ....................................................55
3.7.3 螺旋升角的確定 ......................................................56
3.7.4 截齒配置............................................................ 57
3.7.5 滾筒截齒的選擇 ......................................................60
4 截割部液壓系統(tǒng) ..........................................................62
4.1 截割部液壓系統(tǒng)........................................................ 62
4.1.1 液壓元件基本組成.................................................... 62
4.1.2 搖臂調(diào)高油路工作原理 ................................................63
4.2 液壓系統(tǒng)的安裝及故障 ..................................................65
4.2.1 液壓系統(tǒng)的安裝與維護 ................................................65
4.2.2 液壓系統(tǒng)故障及其處理方法............................................ 66
4.3 截割部的潤滑及密封 ....................................................67
5 采煤機的使用和維護 ......................................................68
5.1 潤滑及注油............................................................ 68
5.2 地面檢查與試運轉...................................................... 69
5.3 下井及井下組裝........................................................ 69
5.4 采煤機的井下操作 ......................................................70
5.5 機器的維護與檢修 ......................................................71
結  論 ....................................................................73
參考文獻.................................................................. 74
英文原文 ..................................................................75
中文譯文.................................................................. 86
致  謝.................................................................... 93

摘  要

設計中所介紹的采煤機截割部適用于傾角的中厚偏薄煤層的開采。它傳動方式為：電動機—搖臂—行星齒輪傳動—滾筒。這種傳動方式的電動機軸與滾筒軸平行，取消了容易損壞的錐齒輪，使傳動更加簡單。截割電機橫向布置在搖臂上，搖臂和機身連接沒有動力傳遞，取消了縱向布置結構中的螺旋傘齒輪和結構復雜的通軸。
該采煤機截割部主要由一個減速箱和四級齒輪傳動組成，電動機輸出的動力經(jīng)由三級直齒圓拄齒輪和行星輪系傳動，最后驅動滾筒旋轉。截割部還采用四行星單浮動結構，減小了結構尺寸，采用大角度彎搖臂設計，加大了過煤空間，提高了裝煤效果。
在采煤機截割部設計過程中，對各級傳動齒輪、軸、軸承和聯(lián)接用的花鍵等部件進行了設計計算、強度校核和選用。另在行星齒輪傳動中，著重分析了四行星輪的結構設計。采煤機滾筒截齒的配置在本設計中也做了合理的分析和布置。對于搖臂調(diào)高液壓系統(tǒng)，本設計另外選用電機驅動調(diào)高泵，其液壓元件的選用也做了適當?shù)恼f明和介紹。最后本設計對采煤機的使用和維護作了簡要的說明。
關鍵詞：截割部； 齒輪；行星輪系； 液壓； 截齒配置

ABSTRACT

A cutting unit of shearer introduced in this design applies to the thick and thin seam mining and hearer cutting angle is less than 15°. Its drives: Motor-Rocker-planetary gear drive-roller. This means that the motor drive shaft axis parallel with the drum cancels the bevel gear which is easy damaged and makes this drive more skimpily. The cutting motor horizontally layout on the Rocker. Rocker and the fuselage are not power transmission and it cancels spiral bevel gear which is in the vertical structure and structural complexity immigration axis.
The cutting unit of shearer mainly includes a slowdown boxes and four gear drives. Outputs power of motor transmits through three straight round prop gear and planetary gear train finally drive drum rotary. The cutting unit also uses single floating structure of four planets, so it reduces the size of the structure. Using a wide-angle bends arm design increased over coal, and improves the effectiveness of the coal loading.
In the design of shearer cutting unit process, the levels of transmission gear, shaft. I make the bearings and connected with the flowers and other key components for the design, selection and strength check. In another planetary gear drive, I mainly analysis structure design of the four planetary gear. I also do a reasonable analysis to configuration and layout of Pick shearer drum in the design. Rocker increase for the hydraulic system, the design chooses anther motor which drive in the hydraulic pump. I make a discussion for the selection of hydraulic components. Finally, the graduation design makes a simple explanation about how to use and maintenance the shearer.
Keywords: cutting unit; Gear; Planetary gear train; Hydraulic; Pick configuration.