本文選題：帶式輸送機(jī) + 張緊系統(tǒng)�。� 參考：《燕山大學(xué)》2016年碩士論文

【摘要】：近年來(lái)工業(yè)化水平不斷提高,為滿足生產(chǎn)需求,提高生產(chǎn)效率,帶式輸送機(jī)也正地朝著長(zhǎng)距離、大運(yùn)量、大功率方向發(fā)展。隨著輸送機(jī)的大型化,其動(dòng)態(tài)特性也變得更加復(fù)雜,張緊系統(tǒng)作為帶式輸送機(jī)的重要組成部分,對(duì)輸送機(jī)的動(dòng)態(tài)特性有直接影響,其性能的好壞直接關(guān)系到輸送機(jī)能否安全穩(wěn)定工作。首先,本文總結(jié)了國(guó)內(nèi)外帶式輸送機(jī)及其張緊系統(tǒng)的發(fā)展歷程與研究現(xiàn)狀,在此基礎(chǔ)上分析了輸送帶的力學(xué)特性,并選擇了兩參數(shù)的Vogit模型對(duì)輸送帶粘彈特性進(jìn)行描述。并根據(jù)帶式輸送機(jī)的傳動(dòng)及張緊理論,通過(guò)計(jì)算確定了滿足輸送帶不同工況下所需要的張緊力的表達(dá)式,并分析了使輸送機(jī)穩(wěn)定運(yùn)行時(shí)張緊系統(tǒng)應(yīng)具有的工作性能。其次,在理論分析的基礎(chǔ)上,文中采用有限元法建立了自動(dòng)張緊系統(tǒng)的離散動(dòng)力學(xué)模型�；谒茖�(dǎo)的模型從整體出發(fā)運(yùn)用Matlab/Simulink仿真軟件對(duì)唐山某礦山原料皮帶建立仿真模型。仿真研究了當(dāng)輸送機(jī)采用自動(dòng)張緊系統(tǒng)時(shí)輸送帶單元的速度、動(dòng)張力以及張緊小車的運(yùn)動(dòng)特性,并將自動(dòng)張緊系統(tǒng)與重錘式張緊系統(tǒng)進(jìn)行對(duì)比研究,仿真結(jié)果表明,自動(dòng)張緊系統(tǒng)在降低輸送帶動(dòng)張力、縮小張緊行程方面優(yōu)于傳統(tǒng)重力式張緊。同時(shí)仿真研究為自動(dòng)張緊系統(tǒng)設(shè)計(jì)與現(xiàn)場(chǎng)應(yīng)用提供了理論基礎(chǔ)。最后,本文針對(duì)唐山某礦山原料皮帶設(shè)計(jì)了自動(dòng)張緊控制系統(tǒng)。該系統(tǒng)采用AB Control Lgoix系列PLC為控制器,配以張力傳感器、變送器,并與礦山集控系統(tǒng)進(jìn)行了網(wǎng)絡(luò)鏈接,實(shí)現(xiàn)了對(duì)輸送帶張力實(shí)時(shí)監(jiān)測(cè)與控制。該套張緊控制系統(tǒng)具有一定的響應(yīng)速度、控制方便、維護(hù)簡(jiǎn)單,克服了傳統(tǒng)張緊設(shè)備不能自動(dòng)調(diào)整的不足,降低了設(shè)備故障率,提高了生產(chǎn)效率,具有較好的推廣前景。
[Abstract]:In recent years, the industrialization level has been improved continuously. In order to meet the production demand and improve the production efficiency, the belt conveyor is also developing towards the direction of long distance, large capacity and high power. With the large size of conveyor, its dynamic characteristics become more complex. As an important part of belt conveyor, the tension system has a direct impact on the dynamic characteristics of the conveyor. Its performance is directly related to the safety and stability of the conveyor. Firstly, this paper summarizes the development and research status of belt conveyor and its tensioning system at home and abroad. On this basis, the mechanical characteristics of conveyor belt are analyzed, and a two-parameter Vogit model is selected to describe the viscoelastic properties of belt. According to the transmission and tension theory of belt conveyor, the expression of tension force which meets the different working conditions of conveyor belt is determined by calculation, and the working performance of the tension system when the conveyor is running stably is analyzed. Secondly, on the basis of theoretical analysis, the discrete dynamic model of automatic tensioning system is established by finite element method. Based on the derived model, the simulation model of a mining material belt in Tangshan is established by using Matlab / Simulink software. The speed, dynamic tension and motion characteristics of the conveyor belt unit are studied by simulation when the conveyor adopts the automatic tensioning system. The comparison between the automatic tensioning system and the heavy-weight tensioning system is carried out. The simulation results show that, The automatic tensioning system is superior to the traditional gravity tensioning system in reducing the conveying driving tension and reducing the tension stroke. At the same time, the simulation research provides a theoretical basis for the design and field application of automatic tension system. Finally, the automatic tension control system is designed for a mine material belt in Tangshan. The system adopts AB Control Lgoix series PLC as controller, with tension sensor, transmitter, and network link with mine centralized control system to realize real time monitoring and control of conveyor belt tension. The tensioning control system has certain response speed, convenient control, simple maintenance, overcomes the shortage of traditional tensioning equipment which can not be automatically adjusted, reduces the failure rate of the equipment, improves the production efficiency, and has a good popularizing prospect.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TD634.1

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