帶式輸送機變頻張緊裝置設計

機械論文編號:JX251 所有圖紙,任務書，外文翻譯。論文字數:29613.頁數:92

目    錄

1 概  述 ..................................................................1
1.1張緊裝置的作用 .........................................................1
1.2張緊裝置分類........................................................... 2
1.3張緊裝置的發展概況及國內外現狀......................................... 5
1.4 對張緊裝置的要求...................................................... 7
2 主要設計參數及方案確定 ..................................................7
2.1 主要設計要求 ..........................................................7
2.2 方案的確定............................................................ 7
2.3 總體方案的確定........................................................ 8
3 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
3.3鋼絲繩直徑計算與選取.................................................... 11
3.4滾筒幾何尺寸的確定...................................................... 12
3.5傳動比的分配 ............................................................15
4 絞車減速裝置的設計計算................................................... 17
4.1絞車減速器參數確定...................................................... 17
4.2齒輪的設計計算 ..........................................................18
4.2.1齒輪材料的選擇和熱處理方法 ............................................18
4.2.2初步齒輪的主要參數 ....................................................18
4.2.3齒面接觸疲勞強度設計計算 ..............................................18
4.2.4齒根彎曲疲勞強度校核計算.............................................. 20
4.2.5齒輪其他主要尺寸的計算 ................................................20
4.3 蝸桿蝸輪傳動的設計計算 .................................................20
4.3.1材料及齒數的確定 ......................................................21
4.3.2 按蝸輪齒面接疲勞強度計算 .............................................22
4.3.3蝸輪齒根彎曲疲勞強度校核計算.......................................... 23
4.3.4圓柱蝸桿傳動幾何尺寸的計算 ............................................24
4.4蝸桿軸系的結構設計 ......................................................26
4.4.1軸上零件的周向定位.................................................... 29
4.4.2蝸桿面的受力.......................................................... 30
4.5蝸輪軸系設計............................................................ 34
4.6開式及過橋齒輪傳動的設計與計算 ..........................................39
4.6.1 齒輪材料及數據參數................................................... 39
4.6.2 齒面接觸疲勞強度設計計算............................................. 40
4.6.3 齒根彎曲疲勞強度的計算............................................... 41
4.6.4 齒輪基本尺寸參數..................................................... 41
4.7減速器箱體主要結構尺寸.................................................. 43
5 滾筒軸的設計計算......................................................... 46
5.1滾筒和齒輪上的作用力 ....................................................46
5.2確定軸的結構方案........................................................ 47
5.3軸的強度校核............................................................ 47
6 滑輪及卷筒結構的設計..................................................... 54
6.1滑輪設計計算............................................................ 54
6.2鑄造滑輪形式和軸承尺寸 ..................................................56
6.3卷筒的尺寸.............................................................. 58
7 螺栓聯接件和軸承的校核 ...................................................59
7.1螺栓聯接件的校核........................................................ 59
7.1.1卷筒軸軸承座聯接螺栓選擇與校核 ........................................59
7.1.2滑輪聯接螺栓的選擇與校核 ..............................................60
7.2軸承的校核.............................................................. 62
7.2.1蝸桿軸上軸承選擇與校核................................................ 62
7.2.2蝸輪軸上軸承選擇與校核 ................................................64
7.2.3卷筒軸上的軸承選擇與校核.............................................. 66
8 設備的使用和維護......................................................... 68
8.1鋼絲繩的使用維護........................................................ 68
8.2軸承的潤滑與密封........................................................ 68
8.3蝸輪蝸桿傳動潤滑........................................................ 70
8.4開式齒輪傳動潤滑........................................................ 70
結  論..................................................................... 72
參考文獻 ...................................................................73
附錄 .......................................................................74
英文原文................................................................... 74
中文譯文................................................................... 87
致  謝 .....................................................................92

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，張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張緊裝置的比較和分析后可知，按現有的各類張緊裝置,很難達到最佳的張緊效果。本設計利用變頻拖動技術對膠帶張緊力進行實時控制和自動調節，而且張緊力響應速度快，從而降低了對皮帶的沖擊，延長了皮帶和設備的使用壽命，節約了輸送機的運行成本。該張緊裝置結構簡單、維護方便，并且能夠實現長距離帶式輸送機的張緊要求。
本設計從系統整體出發，對張緊裝置的機械傳動系統作了詳細的方案論述及確定，對絞車、減速器、卷筒等主要部件進行了設計，對主要的軸、齒輪等進行了結構和強度設計計算，同時對設備的使用及維護進行了簡要的論述。所設計的張緊裝置可以根據輸送機不同的運行工況自動調節張緊力的大小，從而使膠帶張緊力控制在最佳狀態，保證了輸送機安全、平穩、可靠的運行。

關鍵詞：帶式輸送機 ；張緊裝置 ；張緊力 ；變頻

ABSTRACT

With the belt conveyor to the long-distance, high-speed, high-power direction, with the exception of drive, the tensioning device is to guarantee the conveyor  normal start, run, braking, and stopping the indispensable one of the important parts, immediate influence belt type conveyer's security reliability and stability.    
Through the various belt conveyor tensioning device comparison and analysis tells us that according to the existing tension of all types of devices, it is difficult to achieve the best results of tension. Frequency of the use of design drag on the tape take-up of technology to conduct real-time control and automatic adjustment, but take-up of the fast response, thus reducing the impact of the belt, a belt and equipment to extend the service life, saving a conveyor operation Cost. The tensioning device structure is simple, easy maintenance, and to achieve long belt conveyor take-up requirements.    The design departure from the system as a whole, the installation of mechanical tension transmission system in detail and identified on the programme, the winch, reducer, reel, and other major parts of the design, the main shaft, gear, such as the structure and Strength design, while the use of the equipment and maintenance of a brief discussion. Designed by the tensioning device can conveyor different operating conditions automatically adjust the size of tension, so that tape tension control in the best condition to ensure the conveyor security, stable, reliable operation.

Keywords: Belt conveyors ；Stretching device ；Tensioning force ；Frequency conversion