普通帶式輸送機的設計
摘要 本文在參考常規下運帶式輸送機設計方法的基礎上，分析了常見驅動方式和制動方式用於長運距、大運量下運帶式輸送機上的優缺點，提出該運輸機可採用的驅動和制動方式；分析了常見軟起動裝置及其選型方法，歸納總結出長運距、大運量變坡輸送下運帶式輸送機設計中的關鍵問題和可靠驅動方案和制動方式優化組合的可行方案；通過常規設計計算，提出了合理確定張緊位置、張緊方式及張緊力大小的方法；對驅動裝置及各主要部件進行了選型並校覈。
長距離變坡下運帶式輸送機運行工況複雜，在設計方面需考慮各種可能的工況，並計算最危險工況下輸送機的各項參數，同時爲保證運行過程中輸送機各組成部分能適應載荷及工況的變化需將拉緊力統一，然後重新計算各工況下輸送機參數，最終確定整機參數。
本論文對長運距、大運量變坡下運帶式輸送機，綜合考慮各方面的因素，採用合理的驅動方案、制動方式和軟啓動裝置組合，有效保證長運距、大運量變坡下運帶式輸送機的可靠運行。
關鍵詞：帶式輸送機 下運 長距離 變坡
STUDY ON COMMON TRANSPORTING BELT-CONVEYER
ABSTRACT Based on the design method for the conventional Downwards Transporting Belt-Conveyer (DTBC), the common used driving and braking devices were analyzed in the condition of long-distance and heavy-capacity. The driving and braking types were presented for this kind of conveyer. The soft-starting devices and their type-selection were analyzed. The key points were summarized for designing the long-distance, heavy-capacity DTBC used in varying slope environment. The reliable combined scheme of driving and braking units was put forward. The methods for determining the tensioning location, type and the amount of tensioning force based on the results of conventional calculations. The criterion was summarized for selecting driving device and the main components in the conveyer.
Due to the complicated operational condition of long-distance and varying slope DTBC, it is necessary to consider every kind of possible working conditions during its design and calculate the parameters in the most dangerous condition. At the same time, it is necessary to uniform the tensioning force in order to suit the variations of the load and condition. Then the conveyer's parameters should be re-calculated under various conditions and the parameters should be determined finally.
The research of this paper shows that by using reasonable combination of driving scheme, braking mode and soft-starting device and by determining the schemes for braking and soft-starting from the dynamical analysis and simulation, the reliable operation could be guaranteed for the long-distance, heavy-capacity and varying slope DTBC.
Key word Belt-conveyer, Downwards transportation, long-distance, Varying slope
目 錄
1 緒論………………………………………………………………………………1
2.輸送機的發展與現狀……………………………………………………………2
2.1國內外帶式輸送機的發展與現狀 ……………………………………………2
2.1.1國外煤礦用帶式輸送機技術現狀和發展趨勢 ……………………………2
2.1.2國內煤礦用帶式輸送機的技術現狀及存在的問題 ………………………3
2.1.3我國煤礦用帶式輸送機的發展 ……………………………………………3
2.2選題背景 ………………………………………………………………………4
2.2.1主要技術參數 ………………………………………………………………4
2.2.2線路參數 ……………………………………………………………………5
2.2.3物料特性 ……………………………………………………………………5
2.2.4帶式輸送機工作環境 ………………………………………………………5
2.3本課題的研究內容 ……………………………………………………………6
2.3.1長運距、大運量下運帶式輸送機關鍵技術分析研究 ……………………6
2.3.2帶式輸送機的設計及驅動、制動方案的分析 ……………………………6
3長距離、大運量下運帶式輸送機關鍵技術的分析 ……………………………7
3.1下運帶式輸送機基本組成 ……………………………………………………7
3.2驅動方案的確定 ………………………………………………………………7
3.3帶式輸送機制動技術 …………………………………………………………8
4 長距離大運量下運帶式輸送機的設計…………………………………………11
4.1 帶式輸送機原始參數…………………………………………………………11
4.2 帶式輸送機的設計計算………………………………………………………11
4.2.1輸送帶運行速度的選擇……………………………………………………11
4.2.2輸送帶寬度計算……………………………………………………………12
4.2.3初選輸送帶…………………………………………………………………12
4.3輸送機佈置形式及基本參數的確定…………………………………………13
4.3.1輸送帶佈置形式……………………………………………………………13
4.3.2輸送機基本參數的