膠帶煤流采樣機設計

機械論文編號:JX240 所有圖紙,論文字數:25862.頁數:82

目    錄

1 緒論 ........................................................................1
1.1煤樣的采取與制備 ...........................................................1
1.1.1概述 .....................................................................1
1.1.2煤的不均勻性............................................................. 1
1.1.3采樣..................................................................... 2
1.2商品煤樣的采取 .............................................................2
1.2.1采樣工具................................................................. 2
1.2.2采樣基本原則 .............................................................3
1.2.3煤流中采樣............................................................... 4
1.2.4商品煤樣自動采取......................................................... 5
1.3選煤廠生產檢查煤樣的采取................................................... 5
1.3.1生產檢查主要項目和采樣一般原則........................................... 5
1.3.2采樣間隔時間和子樣質量................................................... 6
1.3.3采樣點及采樣方法 .........................................................6
1.3.4采樣精密度............................................................... 7
1.3.5自動采樣機 ...............................................................7
2 樣機設計方案的確定 ..........................................................10
2.1刮臂式(回運動式)樣機結構原理 ...............................................10
2.1.1刮臂式采樣機結構......................................................... 10
2.1.2刮臂式采樣機工作原理..................................................... 11
2.1.3刮臂式采樣機方案說明..................................................... 11
2.2采樣機整機方案示意圖 .......................................................11
3采樣機的初步設計計算 .........................................................12
3.1鏟斗的設計 .................................................................12
3.2接斗的設計 .................................................................12
4偏心塊的設計 .................................................................13
4.1選擇偏心塊的材料........................................................... 15
4.2計算每次采集煤樣重量 .......................................................15
4.3計算每次采集所需做的功..................................................... 16
4.4計算偏心塊的尺寸 ...........................................................16
4.5驗算....................................................................... 17
5減速器的設計計算 .............................................................18
5.1方案的確定 .................................................................18
5.2計算傳動裝置的運動和動力參數 ...............................................19
5.2.1電動機選型............................................................... 19
5.2.2動力參數計算............................................................. 19
5.2.3高速級齒輪參數計算....................................................... 20
5.2.4低速級齒輪參數計算....................................................... 29
5.3軸的設計計算............................................................... 38
5.3.1高速軸（齒輪軸） .........................................................38
5.3.2低速軸 ...................................................................42
5.4滾動軸承的選擇計算......................................................... 43
5.5鍵聯接的選擇及校核計算 .....................................................43
5.6減速器的潤滑和密封形式 .....................................................44
5.7減速器箱體設計 .............................................................45
6鏈傳動設計 ...................................................................47
6.1滾子鏈的結構 ...............................................................47
6.2鏈輪材料................................................................... 48
6.3滾子鏈傳動的設計計算 .......................................................48
6.4滾子鏈鏈輪尺寸計算......................................................... 50
6.4.1滾子鏈鏈輪的基本參數和主要尺寸........................................... 50
6.4.2三圓弧一直線槽形狀尺寸計算............................................... 52
6.4.3軸向齒廓尺寸 .............................................................54
6.4.4整體式鋼制小鏈輪主要結構尺寸 .............................................54
6.4.5腹板式、單排鑄造大鏈輪主要結構尺寸....................................... 54
6.4.6滾子鏈鏈輪的量柱測量距MR................................................. 55
6.4.7各項公差的確定 ...........................................................55
6.4.8繪制大小鏈輪圖基本數據 ...................................................56
7主軸的設計與校核............................................................. 57
7.1選擇軸的材料 ...............................................................57
7.2初步確定軸最小直徑 .........................................................57
7.3軸的結構設計 ...............................................................58
7.4軸的校核................................................................... 59
7.4.1鏟煤過程的校核........................................................... 59
7.4.2回程過程的校核........................................................... 61
7.5軸的細部設計............................................................... 65
8鏟桿及曲柄的設計 .............................................................67
8.1鏟桿及鏟斗的設計........................................................... 67
8.1.1計算最大過煤高度......................................................... 67
8.1.2計算鏟桿尺寸 .............................................................68
8.1.3鏟桿的設計 ...............................................................68
8.2曲柄的設計................................................................. 69
8.3機架的設計 .................................................................69
9控制系統設計 .................................................................70
10采樣機的安裝................................................................ 71
10.1產品用途.................................................................. 71
10.2主要技術參數 ..............................................................71
10.3產品結構 ..................................................................71
10.4產品特點 ..................................................................72
10.5電源連接 ..................................................................72
10.6操作及使用 ................................................................72
10.7采樣機的維護.............................................................. 72
參考文獻...................................................................... 73
翻譯部分...................................................................... 74
致  謝 ........................................................................82

摘   要

     煤炭質量是煤炭交易和加工應用的最主要的指標,獲得可靠的測試結果必然依賴于規范的檢測過程,在采、制、化三個環節中,采樣過程中可能導致的偏差是最嚴重的,采用機械化采樣設備是最有效的手段之一。

膠帶煤流采樣機是以電機為動力,通過減速器及帶輪傳遞驅動力,利用大帶輪上的擋桿使偏心輪重心上移的傳動系統。采樣機采樣間隔時間通過時間繼電器來調節。采樣機機架設置在帶式輸送機機架兩側,整個傳動裝置均設在采樣機機架上。該機器機構緊湊,制造成本低,采樣準確可靠,自動化程度高,是替代人工采樣的理想工具,具有廣泛的推廣應用價值。

關鍵詞：采樣 ；采樣機 ；輸送機 ；自動取樣

ABSTRACT

      Coal quality is the most important indication of commercial and processing or application. And obtaining credible testing result should depend on conventional testing processing. Among the 3 processing of sampling, making and test, sampling may cause the most serious errors, therefore, using the sampling machine should be one of the most effective means.

The machine is the transmission system with motor as power that transmits drive through gear reducer, sprockets, and uses the rod on big sprockets that makes the focus of partial ship moving upwardly. Sampling time - interval is adjusted through time relay. Install the frame of sampling machine that coincides with the frame of belt conveyor. Entire drive device is set up on frame of sampling machine. This machine, organization is compact, manufacturing costs are low, sampling coal is accurate and reliable, and automation level is high.So it is an ideal tool of replacing artificial sampling and has extensive popularize application value.

Key words: sampling; sampling machine; belt conveyor; auto - sampling