本文選題：信號檢測 + 液壓系統(tǒng)��； 參考：《太原理工大學》2015年碩士論文

【摘要】：帶式輸送機是利用摩擦傳動來進行物料傳遞的連續(xù)運輸設備，其具有運量大、對輸送線路的適應能力強、可連續(xù)運輸、自動化程度高、易于實現(xiàn)集中控制、對輸送的物料的適應能力強，輸送成本低廉等一系列的優(yōu)點。目前帶式輸送機已經成為在煤炭、礦山、火電站、港口、碼頭等領域應用最為廣泛的散料運輸機械。由于作為輸送機主體的輸送帶是一種粘彈性體材料，在帶式輸送機的過渡運行的過程中儲存了大量的能量，一旦發(fā)生斷帶事故而不能及時予以有效制動將導致巨大的次生事故，嚴重的還會導致人員的傷亡，故帶式輸送機系統(tǒng)應該設置斷帶抓捕裝置。 在綜合考慮各種斷帶原因及斷帶后輸送帶的運動趨勢的基礎上，論文針對性的開發(fā)了一套新的整體式的液壓斷帶抓捕裝置。在系統(tǒng)性的分析了輸送機系統(tǒng)對斷帶抓捕裝置性能要求的基礎之上，針對影響斷帶抓捕裝置核心性能的液壓系統(tǒng)做了細致的分析研究。提出了以編碼器信號監(jiān)測系統(tǒng)為核心的四重信號檢測系統(tǒng)，該系統(tǒng)主要通過利用速度差值法來綜合判斷輸送帶的運行趨勢，提高了對輸送帶運行狀態(tài)判斷的精確性。提出了以蓄能器為抓捕動力源的基于抓捕油缸差動連接的新型的差動抓捕系統(tǒng)，極大的提高了對斷帶的抓捕速度。并針對性的做了理論研究和實驗研究，為輸送帶斷帶后的準確判斷及可靠制動提供了理論依據(jù)和實驗支撐。 在此基礎之上，論文針對影響斷帶抓捕裝置執(zhí)行機構抓捕性能的液壓系統(tǒng)的連接管路的參數(shù)及蓄能器預充氣壓力和蓄能器的配置方案做了理論研究及仿真研究，并通過與現(xiàn)場實驗采集的各種實測曲線的分析對比驗證了理論分析和仿真分析的正確性。為該液壓系統(tǒng)組成元器件的性能優(yōu)化提供了依據(jù)。論文還利用Adams動力學分析軟件和AMESim液壓仿真軟件對執(zhí)行機構的抓捕裝置的抓捕過程做了聯(lián)合仿真，分析了在抓捕的過程中楔形塊和輸送帶間的壓力變化趨勢。 最后，本文依據(jù)實際工況和仿真軟件的優(yōu)化結果完成了帶式輸送機用斷帶抓捕裝置的整機制作和實驗平臺搭建，，并進行模擬試驗。在實驗的過程中通過改變不同的系統(tǒng)配置參數(shù)，驗證了前文的設計計算及仿真結果的正確性�？偨Y出了適宜類似結構和系統(tǒng)的參數(shù)設置方案，以達到在滿足執(zhí)行機構快速運動的基礎上降低液壓沖擊、震動和經濟性的要求。實驗結果表明該斷帶抓捕裝置能夠對斷帶進行快速、可靠的抓捕。
[Abstract]:Belt conveyor is a continuous transportation equipment which uses friction transmission to transfer materials. It has the advantages of large transportation capacity, strong adaptability to transmission lines, continuous transportation, high degree of automation, and easy to realize centralized control. A series of advantages such as strong adaptability and low cost for conveying materials. At present, belt conveyor has become the most widely used bulk transport machinery in coal, mine, thermal power station, port, wharf and other fields. As the main conveyor belt is a viscoelastic material, a large amount of energy is stored during the transitional operation of the belt conveyor. Once the belt breaking accident occurs and can not be effectively brake, it will lead to a huge secondary accident. Serious casualties can also be caused, so belt conveyor systems should be equipped with belt arrest device. On the basis of synthetically considering all kinds of fault belt reasons and the movement trend of conveyer belt after belt break, a new integral hydraulic belt arresting device is developed in this paper. Based on the systematic analysis of the requirements of conveyor system for the performance of the belt break capture device, the paper makes a detailed analysis and research on the hydraulic system which affects the core performance of the belt break capture device. A quadriple signal detection system with encoder signal monitoring system as the core is proposed in this paper. The system synthetically judges the running trend of conveyor belt by using the velocity difference method and improves the accuracy of judging the running state of conveyor belt. A new type of differential capture system based on the differential connection of the oil cylinder is proposed, which takes the accumulator as the power source of capture, which greatly improves the capture speed of the broken zone. The theoretical and experimental studies are carried out in order to provide theoretical basis and experimental support for accurate judgment and reliable braking of conveyor belt. On this basis, the paper makes theoretical research and simulation study on the parameters of hydraulic system connecting pipeline and accumulator pre-inflatable pressure and accumulator configuration scheme which affect the performance of the executive mechanism of the gripping device. The correctness of the theoretical analysis and the simulation analysis is verified by comparing the measured curves with the field experiments. It provides the basis for the performance optimization of the components of the hydraulic system. The paper also uses Adams dynamic analysis software and AMESim hydraulic simulation software to simulate the capture process of the actuator, and analyzes the pressure change trend between the wedge and the conveyor belt during the capture process. Finally, according to the actual working conditions and the optimization results of the simulation software, the whole machine making and the experimental platform of the belt break capture device for belt conveyor are completed, and the simulation test is carried out. In the process of experiment, the correctness of the design calculation and simulation results are verified by changing different system configuration parameters. The parameter setting scheme suitable for similar structures and systems is summarized in order to meet the requirements of reducing hydraulic shock vibration and economy on the basis of fast movement of actuators. The experimental results show that the device can capture the fault zone quickly and reliably.
【學位授予單位】：太原理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TH137

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