混凝土泵

• It ' s also presented of the theory fundament and software that are involved in the research project . the formulae are concluded respectively at detail according to the precondition and the program compiled with c language is presented as well
  根据建立混凝土泵车底架有限元模型的需要，详细推断了在四点支承和三点支承两种状态下混凝土泵车支腿反力的计算公式，并利用c语言编写了程序。
• At the same time it has an important significance to study roundly the structure of boom system of the truck - mounted concrete pump . based on the certain boom system model of the truck - mounted concrete pump made in china , the primary content of this thesis includes two aspect of boom system of the truck - mounted concrete pump . one is the dynamics simulink of boom system based on flexible multi - body and stress of boom structure based on the result of dynamics simulation of boom system
  论文在综述国内外混凝土泵车发展概况和技术水平的基础上,说明了臂架系统的研究现状及本论文所基于的方法,并从以下两个方面对臂架系统进行了研究: 1 .利用pro / e建立了臂架系统的三维仿真模型,利用ansys软件与adams软件,对臂架系统的工作过程进行了基于刚柔混合臂架模型的动力学仿真,得到了基于精确动力学仿真结果的臂架的动应力分析结果。
• Aimed at the structure and characteristic of the frame ( base structure ) of the truck mounted concrete pump , an appropriate and correct finite element analysis model is established by adopting such ways as theories , software and tests . a good effect is acquired after the local improvement to the structure of the frame foundation according to the finite element analysis results
  本文从实际问题出发，将理论、软件工具和试验有机结合起来，针对混凝土泵车底架的结构和工作特性，建立了合适、正确的有限元模型，并根据其分析结果，对底架进行了结构上的局部改进，取得了良好效果。
• Firstly this text studied the super thick planceer of mass concrete of high - rise building with ten characteristics comparing with the common reinforced concrete , according to the above characteristic from three aspect including the reinforcing bar project , the concretes project and the form project , elaborate the construction characteristics of super thick mass concrete planceer of high - rise building , have a detailed explanation of the big reinforcing bar link technique and the pump technique of the prepared concrete
  首先本文研究了高层建筑超厚底板大体积混凝土的与普通钢筋混凝土相比具有的十个特性，根据上述特性从钢筋工程、模板工程、混凝土工程三个方面阐述了高层建筑超厚底板大体积混凝土的施工特点，重点就钢筋连接技术、预拌混凝土泵送技术进行详细论述。
• Chapter one the introduction , survey artificial neural network , modal analysis , finite element both at home and abroad , evolve algorithm history , development and current situation of studying , and domestic concrete pump industry state of development of car , explain copies of proposition , purpose and meaning of subject
  第1章为绪论，综述了国内外人工神经网络、模态分析、有限元、进化算法(包括演化策略)研究的历史、发展和现状，以及国内混凝土泵车的产业发展状况，阐述了本课题的提出、目的和意义。
• Firstly , working theory and structure of concrete pump are lucubrated . and the flowing state of the concrete in duct is analyzed by virtue of the rheology theory . secondly , the flowing model of concrete in duct is established , with that , the pressure loss of concrete flowing in duct is analyzed , too
  论文首先对混凝土泵的工作原理和结构进行了综合分析；基于流变学原理，深入分析了泵送混凝土在输送管中的流动状态，建立了混凝土在管道中的流动模型，分析了混凝土在管道中流动的压力损失；基于运动学和动力学基本原理，对混凝土s管阀的运动学和动力学进行了分析。
• The paper is primarily concerned with the self - study measure of the intelligent system . it discusses the establishment of the fussy study in the concrete pouring and the real - time design with the credibility besides theory analysis , the concrete realization of the experiment system is discussed and the experiment result is analyzed
  本论文主要研究了智能计量系统的自学习功能和测量方案：研究了如何基于混凝土泵送技术，运用模糊自学习理论，设计一个具有可靠测量、实时计量的智能系统。并实现该系统的实验与应用，且对实验结果进行了具体的分析。
• Thirdly , it simulated the pumping circuit & dividing circuit with the widely used software matlab / simulink . the displacement of the rod piston and the impact of hydraulic are analyzed in the different input flow ( frequency of pump ) and different reversing time . it found out the cause of hydraulic impact ( one - to - one incorrespondence between the response time of dividing circuit and the operation time of rod piston ) , and gave some methods to weaken hydraulic impact . in the final part of the paper , the reliability of the theory analysis is further verified by the experiment of hydraulic system
  首先在流变学原理的基础上，深入分析混凝土在输送管道内的流动状态，得出混凝土泵的负载特性方程；然后根据功率键合图的建模方法，建立泵送回路和分配回路的数学模型，并运用仿真软件matlab simulink对泵送和分配回路模型进行了仿真，分析了在不同的输入流量(泵送频率)和换向时间下，活塞杆的位移和系统的液压冲击情况，找到了引起液压冲击的根本原因(即分配回路的响应时间(固定值)与活塞杆的运动时间(变化值)不相匹配) ，并提出了相应的改进方法。
• Because arm shelf have great influence on performance of the long arm concrete pump car , for improve of our country concrete pump designing and manufacturing level of car as soon as possible , entrust by enterprise , with begin 42m concrete pump car arm shelf system produced to design as the research object recently at home this text , analyse bp neural network , finite element , hereditary organic to combine algorithm , carry on research to concrete pump car arm shelf structure optimization design of system
  由于臂架对长臂混凝土泵车的性能有重大影响，为了尽快提高我国混凝土泵车的设计制造水平，受企业委托，本文以国内新近开始设计生产的42m混凝土泵车臂架系统为研究对象，将bp神经网络、有限元(模态)分析、演化策略有机结合，对混凝土泵车臂架系统的结构优化设计进行了研究。