本文選題：膠帶輸送機 + 液壓張緊��； 參考：《大連交通大學》2011年碩士論文

【摘要】：隨著我國經(jīng)濟的高速發(fā)展,膠帶式輸送機廣泛地應用在冶金、煤炭、交通、水電、化工等部門。由于我國大型重載長距離膠帶輸送機張緊控制系統(tǒng)的核心部件長期依靠進口。因此本文針對膠帶式輸送機液壓張緊裝置設計了膠帶輸送機智能液壓張緊控制系統(tǒng)。 首先,本文介紹了目前膠帶輸送機液壓張緊控制系統(tǒng)的發(fā)展現(xiàn)狀,分析了目前我國技術中存在的各種問題。提出將單片機技術應用于膠帶輸送機液壓張緊控制系統(tǒng)的設計當中,以提高其智能化水平,滿足用戶的多種需要。 其次,闡述了液壓張緊裝置的構(gòu)成,介紹了控制系統(tǒng)的工作原理,研究了蓄能器壓力和液壓缸壓力(張緊力)保持的方法。通過控制液壓泵的啟停來實現(xiàn)蓄能器的壓力保持,通過控制電液伺服閥的開口方向和開口大小保持張緊力的恒定。在早期的張緊控制系統(tǒng)中,系統(tǒng)壓力波動通常會擾動液壓缸張緊力,本控制系統(tǒng)通過控制電液伺服閥消除了這一擾動。實現(xiàn)了張緊力長時間保持在任一設定壓力值。 再次,本文詳細闡述了膠帶輸送機專用儀表的設計原理和實現(xiàn)方法。主要從兩個方面進行設計。首先是控制理論,通過對膠帶輸送機張緊控制系統(tǒng)的常用理論進行對比,結(jié)合MATLAB的仿真結(jié)果,確定了本控制系統(tǒng)所采用的控制理論。其次是膠帶輸送機智能液壓張緊控制系統(tǒng)的硬件和軟件設計,采用硬件和軟件同時進行設計的方式,這樣使硬件和軟件的匹配度更好,系統(tǒng)運行更穩(wěn)定和精度更高。系統(tǒng)硬件部分按模塊設計的指導思想,使電子元器件相互干擾降到最低。軟件按照功能模塊進行編寫,根據(jù)工況的不同主程序調(diào)用不同子程序來實現(xiàn)對張緊力的控制。 最后,本文對于本系統(tǒng)的應用,設計了典型的電氣圖,并介紹了本系統(tǒng)的市場前景。
[Abstract]:With the rapid development of economy in China, rubber belt conveyor is widely used in metallurgy, coal, transportation, hydropower, chemical industry and so on. The core components of the tension control system of the large heavy haul long-distance belt conveyor in China depend on import for a long time. Therefore, the intelligent hydraulic tensioning control system of belt conveyor is designed for the hydraulic tensioning device of rubber belt conveyor in this paper. Firstly, this paper introduces the development status of the hydraulic tension control system of belt conveyor, and analyzes the various problems existing in the present technology of our country. In order to improve the intelligent level and meet the various needs of the users, the single-chip computer technology is applied to the design of the hydraulic tension control system of the belt conveyor. Secondly, the composition of hydraulic tensioning device is expounded, the working principle of control system is introduced, and the methods of holding accumulator pressure and hydraulic cylinder pressure (tensioning force) are studied. The pressure of accumulator is kept by controlling the starting and stopping of hydraulic pump, and the tensioning force is kept constant by controlling the opening direction and opening size of electro-hydraulic servo valve. In the early tensioning control system, the pressure fluctuation of the system usually disturbed the tension force of the hydraulic cylinder, and this control system eliminated the disturbance by controlling the electro-hydraulic servo valve. The tensioning force is kept at any set pressure for a long time. Thirdly, the design principle and realization method of the special instrument for belt conveyor are described in detail. Mainly from two aspects of the design. First is the control theory, through the comparison of the common theory of belt conveyor tensioning control system, combined with the simulation results of MATLAB, the control theory used in this control system is determined. Secondly, the hardware and software of the intelligent hydraulic tension control system of belt conveyor are designed. The hardware and software are designed at the same time, so that the matching degree of hardware and software is better, the system runs more stable and the precision is higher. The hardware of the system is designed according to the principle of module design, which minimizes the interference between components and electronic components. The software is written according to the function module and different subprograms are called according to the different main program of the working condition to realize the control of the tension force. Finally, this paper designs the typical electrical diagram for the application of the system, and introduces the market prospect of the system.
【學位授予單位】：大連交通大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH222

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