本文選題：混凝土攪拌運(yùn)輸車 + 運(yùn)輸工況��； 參考：《重慶交通大學(xué)》2013年碩士論文

【摘要】：混凝土攪拌運(yùn)輸車是混凝土攪拌站和工程建設(shè)施工現(xiàn)場的“紐帶”。近年來，大量的工程建設(shè)促進(jìn)了混凝土攪拌運(yùn)輸車的運(yùn)輸，從而增加了混凝土攪拌運(yùn)輸車的投入使用。然而，混凝土攪拌運(yùn)輸車的交通事故經(jīng)常發(fā)生，所以對其運(yùn)輸工況下的安全性研究不得不引起人們的思考。發(fā)生混凝土攪拌運(yùn)輸車交通事故的原因有很多，其中轉(zhuǎn)彎時經(jīng)常會引起攪拌運(yùn)輸車的側(cè)翻事故是事故發(fā)生的主要原因之一。所以，基于運(yùn)輸工況下混凝土攪拌運(yùn)輸車的轉(zhuǎn)彎安全性研究顯得十分必要。 本文首先介紹了混凝土攪拌運(yùn)輸車的組成結(jié)構(gòu)及工作原理，闡述了攪拌筒的工作原理及結(jié)構(gòu)設(shè)計，通過理論分析攪拌筒質(zhì)心的靜態(tài)位置，攪拌筒旋轉(zhuǎn)質(zhì)心的變化，攪拌車轉(zhuǎn)向質(zhì)心的變化，總結(jié)出了質(zhì)心動態(tài)變化的規(guī)律。然后建立混凝土攪拌運(yùn)輸車側(cè)翻模型，求解出混凝土攪拌運(yùn)輸車轉(zhuǎn)彎時臨界側(cè)翻的速度表達(dá)式。接下來分析了混凝土攪拌運(yùn)輸車在轉(zhuǎn)彎時的側(cè)翻穩(wěn)定性，確定了空載時的側(cè)翻臨界速度；利用滿載時整車對攪拌運(yùn)輸車穩(wěn)定幅的影響值，確定了滿載時的側(cè)翻臨界速度。之后確定混凝土攪拌運(yùn)輸車轉(zhuǎn)彎時的預(yù)轉(zhuǎn)角、轉(zhuǎn)彎半徑，從而計算出轉(zhuǎn)彎時的安全車速，最后以某實(shí)車參數(shù)進(jìn)行了工程實(shí)例分析。 基于上述理論分析，借助于LabVIEW虛擬儀器軟件開發(fā)平臺，搭建程序框圖，并設(shè)計出所對應(yīng)的前面板，面板上的參數(shù)可按要求進(jìn)行手動設(shè)置，然后運(yùn)行，，對比理論分析的結(jié)果，驗證其虛擬儀器設(shè)計的正確性，驗證結(jié)果表明虛擬儀器的運(yùn)行結(jié)果和理論分析計算的結(jié)果是一致的。在配有轉(zhuǎn)角、車速、稱重傳感器及其相應(yīng)配套裝置的條件下，該儀器能比較智能地實(shí)時顯示混凝土攪拌運(yùn)輸車在轉(zhuǎn)彎時的安全車速，并判斷其行駛車速是否在安全車速以內(nèi)并預(yù)警，從而確保轉(zhuǎn)彎時的行車安全，有效地防止側(cè)翻。
[Abstract]:Concrete mixing truck is the link between concrete mixing station and construction site. In recent years, a large number of engineering construction has promoted the transport of concrete mixing trucks, thus increasing the use of concrete mixing vehicles. However, the traffic accidents of concrete mixing truck often occur, so the research on the safety of concrete mixing truck under the condition of transportation has to arouse people's consideration. There are many reasons for the traffic accident of concrete mixing truck, among which the rollover accident is one of the main reasons. Therefore, it is necessary to study the turning safety of concrete mixing truck under transportation condition. This paper first introduces the structure and working principle of the concrete mixing truck, expounds the working principle and structure design of the mixing cylinder, analyzes the static position of the center of mass of the mixing cylinder and the variation of the rotating center of mass of the mixing cylinder. The change of the center of mass of the agitator is summarized, and the law of the dynamic change of the center of mass is summed up. Then the model of the concrete mixing truck is established, and the critical speed expression of the concrete mixing truck is obtained when it turns. Then the stability of the concrete mixing truck in turn is analyzed and the critical speed of roll over is determined. The critical speed of roll over is determined by using the influence value of the whole vehicle on the stability amplitude of the truck under full load. After that, the preturning angle and turning radius of the concrete mixing truck are determined, and the safe speed during the turning is calculated. Finally, an engineering example is given to analyze the actual vehicle parameters. Based on the above theoretical analysis, with the help of the LabVIEW virtual instrument software development platform, the program block diagram is built, and the corresponding front panel is designed. The parameters on the panel can be manually set according to the requirements, and then run, and the results of the theoretical analysis are compared. The correctness of the virtual instrument design is verified, and the results show that the operation result of the virtual instrument is consistent with that of the theoretical analysis and calculation. Under the condition of angle, speed, weighing sensor and corresponding equipment, the instrument can display the safe speed of concrete mixing truck when turning intelligently and in real time. It also determines whether the driving speed is within the safe speed and early warning, so as to ensure the safety of the traffic when turning and effectively prevent the rollover.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：U469.65;U492.8

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