混凝土输送设备液压系统的建模与故障分析

发布时间：2019-03-09 17:14

【摘要】：混凝土输送设备(以下简称混凝土泵)是建筑行业广泛应用的一种工程液压机械。液压系统是其技术的关键,也是混凝土泵容易发生故障的主要部分。因此,针对混凝土泵液压系统的故障分析具有非常重要的现实意义。 本文以HBT60型混凝土泵液压系统为研究对象,对其液压系统故障进行了研究,主要进行了以下几个方面的工作： 1、介绍了混凝土泵液压系统的组成和工作原理,给出故障测试条件和结果,并基于实验对摆缸停顿作了故障分析,找出故障元件集合并归纳了在换向过程中产生故障现象的原因。 2、根据实验数据对故障元件的几何参数和运动参数进行了参数识别。 3、利用功率键合图和微分方程的方法建立了故障元件的数学模型,并根据仿真结果作了相关故障分析。 4、结合了基于实验的故障分析和故障元件建模仿真的故障分析结果,对摆缸的停顿故障做出了诊断研究,得出相关的结论并提出了消除故障的措施。
[Abstract]:Concrete conveying equipment (hereinafter referred to as concrete pump) is widely used in the construction industry as a kind of engineering hydraulic machinery. Hydraulic system is the key of its technology, and it is also the main part of concrete pump which is prone to failure. Therefore, the fault analysis of concrete pump hydraulic system has very important practical significance. In this paper, the hydraulic system of HBT60 concrete pump is studied. The main work is as follows: 1. The composition and working principle of hydraulic system of concrete pump are introduced. The fault test conditions and results are given, and the failure analysis of the pendulum cylinder pause is made based on the experiment, and the causes of the fault phenomenon in the course of commutation are summed up by the combination of the fault elements. 2. Based on the experimental data, the geometric parameters and motion parameters of the fault elements are identified. 3. The mathematical model of fault element is established by using the method of power bond graph and differential equation, and the relevant fault analysis is made according to the simulation results. 4. Combining the result of fault analysis based on experiment and modeling of fault element, the fault diagnosis of swing cylinder is made, and the relevant conclusions are drawn, and the measures to eliminate the fault are put forward.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TU646;TH137

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