40023字

摘要 本文在參考常規(guī)下運(yùn)帶式輸送機(jī)設(shè)計(jì)方法的基礎(chǔ)上，分析了常見驅(qū)動(dòng)方式和制動(dòng)方式用于長運(yùn)距、大運(yùn)量下運(yùn)帶式輸送機(jī)上的優(yōu)缺點(diǎn)，提出該運(yùn)輸機(jī)可采用的驅(qū)動(dòng)和制動(dòng)方式；分析了常見軟起動(dòng)裝置及其選型方法，歸納總結(jié)出長運(yùn)距、大運(yùn)量變坡輸送下運(yùn)帶式輸送機(jī)設(shè)計(jì)中的關(guān)鍵問題和可靠驅(qū)動(dòng)方案和制動(dòng)方式優(yōu)化組合的可行方案；通過常規(guī)設(shè)計(jì)計(jì)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(duì)驅(qū)動(dòng)裝置及各主要部件進(jìn)行了選型并校核。
長距離變坡下運(yùn)帶式輸送機(jī)運(yùn)行工況復(fù)雜，在設(shè)計(jì)方面需考慮各種可能的工況，并計(jì)算最危險(xiǎn)工況下輸送機(jī)的各項(xiàng)參數(shù)，同時(shí)為保證運(yùn)行過程中輸送機(jī)各組成部分能適應(yīng)載荷及工況的變化需將拉緊力統(tǒng)一，然后重新計(jì)算各工況下輸送機(jī)參數(shù)，最終確定整機(jī)參數(shù)。
本論文對(duì)長運(yùn)距、大運(yùn)量變坡下運(yùn)帶式輸送機(jī)，綜合考慮各方面的因素，采用合理的驅(qū)動(dòng)方案、制動(dòng)方式和軟啟動(dòng)裝置組合，有效保證長運(yùn)距、大運(yùn)量變坡下運(yùn)帶式輸送機(jī)的可靠運(yùn)行。
關(guān)鍵詞：帶式輸送機(jī) 下運(yùn) 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(jī)的發(fā)展與現(xiàn)狀……………………………………………………………2
2.1國內(nèi)外帶式輸送機(jī)的發(fā)展與現(xiàn)狀 ……………………………………………2
2.1.1國外煤礦用帶式輸送機(jī)技術(shù)現(xiàn)狀和發(fā)展趨勢(shì) ……………………………2
2.1.2國內(nèi)煤礦用帶式輸送機(jī)的技術(shù)現(xiàn)狀及存在的問題 ………………………3
2.1.3我國煤礦用帶式輸送機(jī)的發(fā)展 ……………………………………………3
2.2選題背景 ………………………………………………………………………4
2.2.1主要技術(shù)參數(shù) ………………………………………………………………4
2.2.2線路參數(shù) ……………………………………………………………………5
2.2.3物料特性 ……………………………………………………………………5
2.2.4帶式輸送機(jī)工作環(huán)境 ………………………………………………………5
2.3本課題的研究內(nèi)容 ……………………………………………………………6
2.3.1長運(yùn)距、大運(yùn)量下運(yùn)帶式輸送機(jī)關(guān)鍵技術(shù)分析研究 ……………………6
2.3.2帶式輸送機(jī)的設(shè)計(jì)及驅(qū)動(dòng)、制動(dòng)方案的分析 ……………………………6
3長距離、大運(yùn)量下運(yùn)帶式輸送機(jī)關(guān)鍵技術(shù)的分析 ……………………………7
3.1下運(yùn)帶式輸送機(jī)基本組成 ……………………………………………………7
3.2驅(qū)動(dòng)方案的確定 ………………………………………………………………7
3.3帶式輸送機(jī)制動(dòng)技術(shù) …………………………………………………………8
4 長距離大運(yùn)量下運(yùn)帶式輸送機(jī)的設(shè)計(jì)…………………………………………11
4.1 帶式輸送機(jī)原始參數(shù)…………………………………………………………11
4.2 帶式輸送機(jī)的設(shè)計(jì)計(jì)算………………………………………………………11
4.2.1輸送帶運(yùn)行速度的選擇……………………………………………………11
4.2.2輸送帶寬度計(jì)算……………………………………………………………12
4.2.3初選輸送帶…………………………………………………………………12
4.3輸送機(jī)布置形式及基本參數(shù)的確定…………………………………………13
4.3.1輸送帶布置形式……………………………………………………………13
4.3.2輸送機(jī)基本參數(shù)的確定……………………………………………………13
4.4線路阻力的計(jì)算………………………………………………………………14
4.5輸送帶張力的計(jì)算……………………………………………………………15
4.5.1張力計(jì)算時(shí)各種運(yùn)行工況的討論…………………………………………16
4.5.2 最大發(fā)電狀態(tài)下張力計(jì)算 …………………………………………………16
4.5.3 最大電動(dòng)狀態(tài)下張力計(jì)算 …………………………………………………19
4.5.4滿載狀態(tài)下張力計(jì)算………………………………………………………..