本文選題：混凝土泵 + 排量測量��； 參考：《太原科技大學》2015年碩士論文

【摘要】：在道路、橋梁和樓房等的建筑施工中,商品混凝土拌合場(站)與施工場地之間通常有一定的距離,要合理經(jīng)濟地安排施工設備的數(shù)量,在一定程度上取決于混凝土泵的泵送能力和混凝土攪拌運輸罐車的運輸能力。而混凝土泵的排量是一個關鍵參數(shù),測量其排量又是獲得決策支撐的關鍵技術之一。目前國內(nèi)排量測量技術領域主要應用測量儀器或實驗,研究新型測量方法也以實驗為主,缺少一種排量測量數(shù)字仿真方法,為施工方與用戶方提供產(chǎn)品制造流程中的監(jiān)督工具,從而更早預測其排量,一定程度上減少了資金損失,間接地達到縮減排量測量成本的目的。再者,置于料斗中的S管,其設計方法與結構特征對混凝土的攪拌與泵送起到至關重要的作用。S管長期在充滿混凝土的料斗中工作,高壓混凝土對其各個方向的力的作用使其易磨損并出現(xiàn)沖擊�；阪I合圖理論求解建立了混凝土泵主液壓回路的功率鍵合圖,找出系統(tǒng)的狀態(tài)變量并建立了主液壓系統(tǒng)的狀態(tài)方程,利用數(shù)值仿真軟件MATLAB導出混凝土泵主液壓缸一次泵送的壓力波形圖,結合“有效位移”概念和活塞位移曲線得出混凝土泵一次推送實際排量,從而提前預測各種型號混凝土泵的排量;同時,利用分配機構的運動特點推導出S管的動力學特性;用ANSYS的參數(shù)化設計語言(APDL)工具對S管進行參數(shù)化建模并進行有限元靜力分析;最后,利用ANSYS中的優(yōu)化模塊(/OPT)對S管進行了結構優(yōu)化,有效減少了S管的體積,達到節(jié)省材料的目的。本文提出的混凝土泵排量測量方法是將數(shù)字仿真與“有效位移”概念相結合,通過鍵合圖理論與計算機軟件仿真實際泵送工況下的主油缸壓力波動,通過對不同坍落度混凝土的測試,驗證了該模型的精確性。
[Abstract]:In the construction of roads, bridges and buildings, there is usually a certain distance between the commercial concrete mixing yard (station) and the construction site. The quantity of construction equipment should be arranged reasonably and economically. To some extent, it depends on the pumping capacity of the concrete pump and the transport capacity of the concrete mixing tank truck. The displacement of concrete pump is a key parameter, and measuring its displacement is one of the key technologies to obtain decision support. At present, the measurement instruments or experiments are mainly used in the field of domestic displacement measurement technology, and the new measuring methods are also based on experiments, lacking a digital emulation method of displacement measurement, which provides supervision tools in the manufacturing process for both the construction and the users. Thus it can reduce the loss of capital and achieve the purpose of reducing the measurement cost indirectly. Furthermore, the design method and structural characteristics of the S pipe placed in the hopper play an important role in the mixing and pumping of concrete. The S pipe works in the hopper filled with concrete for a long time. The force of high-pressure concrete on each direction makes it easy to wear and impact. Based on bond graph theory, the power bond diagram of the main hydraulic circuit of concrete pump is established, the state variables of the system are found and the state equation of the main hydraulic system is established. The pressure waveform of the main hydraulic cylinder of concrete pump was derived by using the numerical simulation software MATLAB, and the actual displacement of concrete pump was obtained by combining the concept of "effective displacement" and piston displacement curve. Therefore, the displacement of various types of concrete pumps can be predicted in advance, and the dynamic characteristics of S pipe can be deduced by using the motion characteristics of the distribution mechanism. The parameterized modeling and finite element static analysis of S-tube are carried out by using the parametric design language of ANSYS. Finally, the structure of S-tube is optimized by using the optimization module of ANSYS / Opt, which effectively reduces the volume of S-tube. Achieve the purpose of saving materials. The method of displacement measurement of concrete pump proposed in this paper combines digital simulation with the concept of "effective displacement", and simulates the pressure fluctuation of main cylinder under actual pumping condition by bond graph theory and computer software. The accuracy of the model is verified by testing different slump concrete.
【學位授予單位】：太原科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TU646

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