【摘要】：皮帶輸送機(jī)是煤炭、礦石、砂石、水泥等散料裝卸與短距離運(yùn)輸?shù)闹匾b備,廣泛應(yīng)用于礦山、能源、冶金等行業(yè)。近年來,隨著經(jīng)濟(jì)的發(fā)展,皮帶輸送機(jī)的種類和數(shù)量不斷增加,因而,其整機(jī)與關(guān)鍵部件維護(hù)和故障診斷已成為相關(guān)行業(yè)專業(yè)需求。輸送帶是皮帶輸送機(jī)主要組件,是皮帶傳輸送機(jī)主要故障源,其故障診斷的研究已成為港、礦機(jī)械可靠性研究的一個(gè)熱點(diǎn)。本文在詳細(xì)分析了輸送帶撕裂的成因基礎(chǔ)上,設(shè)計(jì)了一套基于虛擬儀器的非接觸式輸送帶撕裂診斷系統(tǒng)。主要工作有: 深入研究了跑偏、卡壓對輸送帶撕裂的影響,設(shè)計(jì)了模塊化光電跑偏監(jiān)測系統(tǒng)和壓電傳感的動態(tài)壓力監(jiān)測系統(tǒng),以獲得跑偏和卡壓實(shí)時(shí)數(shù)據(jù),結(jié)合以89C51單片機(jī)為下位機(jī)的設(shè)計(jì),通過節(jié)點(diǎn)數(shù)據(jù)融合,判斷撕裂的可能性。采用結(jié)構(gòu)化插件設(shè)計(jì),實(shí)現(xiàn)多點(diǎn)長距離測量。 考慮到現(xiàn)場的工況環(huán)境,數(shù)據(jù)通信采用RS-232串行通信標(biāo)準(zhǔn)完成計(jì)算機(jī)和單片機(jī)之間的數(shù)據(jù)通訊。為了提高系統(tǒng)抗干擾能力,采取了物理屏蔽、光電隔離、濾波等多種措施。 結(jié)合終端的設(shè)計(jì),在LabVIEW平臺上開發(fā)了一套輸送帶撕裂診斷軟件系統(tǒng),實(shí)現(xiàn)了數(shù)據(jù)采集、信號分析與處理、輸送帶狀態(tài)顯示、數(shù)據(jù)存儲、故障報(bào)警等功能。通過實(shí)驗(yàn)驗(yàn)證,輸送帶撕裂診斷系統(tǒng)能夠?qū)斔蛶У倪\(yùn)行狀態(tài)進(jìn)行實(shí)時(shí)監(jiān)測、診斷和預(yù)警。 所設(shè)計(jì)的系統(tǒng)突破了傳統(tǒng)測試系統(tǒng)只能針對某一種撕裂原因進(jìn)行檢測的局限性,并與虛擬儀器相結(jié)合,可靠性高,運(yùn)行穩(wěn)定,為進(jìn)一步開發(fā)輸送帶撕裂保護(hù)裝置提供了參考。
[Abstract]:Belt conveyer is an important equipment for loading, unloading and short distance transportation of coal, ore, sand, cement and so on. It is widely used in mining, energy, metallurgy and other industries. In recent years, with the development of economy, the types and quantity of belt conveyors have been increasing. Therefore, the maintenance and fault diagnosis of the whole machine and the key parts have become the professional needs of the related industries. Conveyor belt is the main component of belt conveyor and the main fault source of belt conveyor. The research on fault diagnosis of belt conveyor has become a hot spot in the research of reliability of mine machinery. Based on the detailed analysis of the causes of belt tear, a non-contact belt tear diagnosis system based on virtual instrument is designed in this paper. The main works are as follows: the influence of running deviation and compression on the tear of conveyor belt is deeply studied, and the modularized photoelectric deviation monitoring system and the dynamic pressure monitoring system based on piezoelectric sensor are designed to obtain the real time data of running deviation and pressing. Combined with the design of 89C51 microcontroller, the possibility of tearing is judged by data fusion of nodes. The multi-point long-distance measurement is realized by using structured plug-in. Considering the working environment of the field, the data communication adopts RS-232 serial communication standard to complete the data communication between the computer and the single chip computer. In order to improve the anti-interference ability of the system, many measures such as physical shielding, photoelectric isolation, filtering and so on have been adopted. Combined with the design of the terminal, a belt tear diagnosis software system is developed on the LabVIEW platform, which realizes the functions of data acquisition, signal analysis and processing, conveyor belt status display, data storage, fault alarm and so on. The experimental results show that the belt tear diagnosis system can monitor, diagnose and warn the running state of conveyor belt in real time. The designed system breaks through the limitation that the traditional testing system can only detect one kind of tear reason, and combines with virtual instrument, it has high reliability and stable operation, which provides a reference for further development of belt tear protection device.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH222;TH165.3

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