帶式輸送機全自動機械張緊裝置

機械論文編號:JX325  所有圖紙,外文翻譯。論文字數:23837.頁數:87
目    錄

第一章 概  述 ...........................................................1
1. 1拉緊裝置的發展概況 ..................................................1
1.2 拉緊裝置的作用 ......................................................1
1.3 對張緊裝置的要求 ....................................................2
1.4 拉緊裝置的位置 ......................................................2
1.5 大型帶式輸送機常用拉緊裝置的類型.................................... 2
第二章主要設計參數及方案確定 ...........................................5
2.1 主要設計要求 ........................................................5
2.2 方案的確定.......................................................... 5
2.2.1 參考方案.......................................................... 5
2.2.2 方案對比 ..........................................................8
2.2.3 傳動方案的確定 ....................................................8
第三章張緊裝置總體設計................................................. 10
3.1電動機的確定 .........................................................10
3.2機構工作級別的確定 ...................................................11
3.2.1機構利用等級 .......................................................11
3.2.2機構載荷狀態....................................................... 11
3.2.3 機構工作級別...................................................... 12
3.3鋼絲繩直徑計算與選取 .................................................12
3.4滾筒幾何尺寸的確定 ...................................................12
3.5傳動比的分配 .........................................................16
第四章蝸輪蝸桿減速器的設計............................................. 18
4.1材料及齒數的確定 .....................................................18
4.1.1 按蝸輪齒面接觸疲勞強度計算........................................ 19
4.1.2蝸輪齒根彎曲疲勞強度校核計算 .......................................21
4.1.3圓柱蝸桿傳動幾何尺寸的計算 .........................................22
4.2蝸輪軸系設計 .........................................................25
4.3蝸桿軸系的結構設計.................................................. .30
4.3.1軸上零件的周向定位................................................. 33
4.3.2蝸桿面的受力....................................................... 34
4.4滾筒軸系設計 .........................................................40
4.5減速器箱體主要結構尺寸............................................... 41
4.6開式齒輪傳動的設計與計算............................................. 45
4.6.1選擇齒輪材料 .......................................................45
第五章滑輪組及卷筒結構的設計........................................... 52
5.1滑輪設計計算 .........................................................52

5.1.1滑輪結構和材料 .....................................................52
5.1.2鋼絲繩進出滑輪時的允許偏角 .........................................52
5.1.3滑輪主要尺寸 .......................................................52
5.1.4繩槽斷面尺寸.................................................. .....53
5.2鑄造滑輪形式和軸承尺寸 ...............................................55
5.3卷筒的尺寸............................................................57
第六章螺栓聯接件和軸承的校核 ...........................................59
6.1螺栓聯接件的校核..................................................... 59
6.1.1卷筒軸軸承座聯接螺栓選擇與校核..................................... 59
6.1.2滑輪聯接螺栓的選擇與校核........................................... 60
6.2軸承的校核........................................................... 61
6.2.1蝸輪軸上滾動軸承選擇與校核......................................... 62
6.2.2蝸桿軸上滾動軸承選擇與校核......................................... 64
第七章設備的使用和維護................................................. 67
7.1鋼絲繩的使用維護..................................................... 67
7.2軸承的潤滑與密封..................................................... 67
7.3蝸輪蝸桿傳動潤滑 .....................................................69
7.4開式齒輪傳動潤滑..................................................... 69
結  論 ..................................................................70
致  謝 ..................................................................71
參考文獻 ................................................................72
附錄外文資料及翻譯 .....................................................73

摘   要

     隨著帶式輸送機向長距離、高速度、大功率方向發展，除驅動裝置外，拉緊裝置是保證輸送機正常啟動、運行、制動、和停車的不可缺少的重要部件之一，直接影響帶式輸送機的安全可靠性和穩定性。
通過對帶式輸送機各種拉緊裝置的比較和分析，本設計主要是自動絞車式張緊裝置的設計，其傳動部分由蝸輪蝸桿傳動和一對開式齒輪傳動兩部分組成，絞車用蝸輪蝸桿傳動帶動卷筒來纏繞鋼絲繩，從而拉緊膠帶，同時采用變頻調速電機對張緊力進行控制。根據不同工作情況隨時調節張緊力的大小，從而使輸送機在運行工礦下安全、平穩、可靠的運行。能最大程度的延長皮帶的壽命，大大節約了成本。
本文從系統整體出發，對絞車式拉進裝置作了詳細的論述。在皮帶機啟動階段，能提供足夠大的張緊力；啟動完畢后又可使皮帶的張緊力恢復到額定值以維持皮帶機的正常運行。此設計的特點是：可靠性高、體積小、拉力大等。

關鍵詞：帶式輸送機 ；拉緊裝置 ；蝸輪蝸桿 ；拉緊力 ；
ABSTRACT

With the development of belt conveyor towards long distance , high speed , long carring and large driving power , besides driver device , Especially under the condition of starting , running , braking and stopping , And also , as one of the most indispensable parts in belt conveyor , take-up has an direct effect on safety , reliability and sbability of conveyor system on a whole .
 By contrasting and analyzing of various take-ups on belt conveyor . This design is mainly about automatic windlass tension station . Its drive part makes up into worm pair and gear driver . Windlass uses worm gear worm driving reel which binds wire rope to pull tight adhesive tape . In the meantime , it adopts the frequency conversion adjusting speed motor to control tensioning force . It adjusts pressing the strength size as necessary according to the different working condition . And the system can work safely and reliably in various conditions . It can be the greatest degree lengthen the leather belt the life , greatly saved the cost .
This paper expands on the strain unit of windlass in theory from the perspect of the whole system . When adhesive tape starts , strain unit can supply enough great tensioning force ; When finishes , it can make tensioning force of leather belt regaining assessed amount to keep normal running of leather belt . characteristic of this design is high reliability , small volume , big tensile force end so on .

Keywords: belt conveyor ; tensioning device ; worm pair ; tensioning force ;