钢拱架安装车作业稳定性研究

发布时间：2018-05-22 19:31

  本文选题：钢拱架安装车 + 臂架　； 参考：《石家庄铁道大学》2015年硕士论文

【摘要】：随着我国交通事业大力发展,高等级铁路、公路建设发展水平迅速提高,隧道施工机械化水平已经刻不容缓。在软弱围岩隧道施工中最重要的步骤就是围岩的支护,其中支护钢拱架是一个重要工序。国内主要借用人力或者借助辅助工具来安装钢拱架,耗费人力、程序复杂、劳动强度大、工作效率低、安全保证系数低,运用机械化安装车安装钢拱架不仅省时省力,而且安装精度较高。本文主要对钢拱架安装车作业稳定性进行了研究。首先,了解国内外钢拱架安装车的发展状况,建立臂架系统和工作平台的实体模型。以总体设计参数为依据,利用SolidWorks软件建立了钢拱架安装车臂架系统和工作平台等各个部件的三维模型,并通过了干涉检查,确保模型的准确性。其次,对建好的装配体模型进行受力分析和钢拱架安装车总体结构分析。首先组装各个零部件,以基本臂的销轴中心作为坐标原点,利用SolidWorks中的质量特性测量装配体中各个部件质量和各个零部件重心到倾翻线的距离(即力臂)。再次,利用“稳定系数法”(稳定系数=稳定力矩/倾覆力矩≥1.4)对钢拱架安装车作业稳定性研究:不同臂长、不同方位、不同仰角时所能承受的最大载荷。当工作平台上载荷一定时,不同臂长和不同仰角变化时,求出安全作业区域。当工作平台载荷不一定时,我们可以根据不同臂长、不同仰角、不同方位的最大载荷来求出仰俯油缸推力的最大值,通过限制仰俯油缸推力来防止车体倾翻,仰俯油缸推力可以通过力传感器测得。最后,通过支腿装置研究钢拱架安装车的稳定性。在支腿上安装自动调平装置、支腿回缩自锁装置、力矩限制器,可以有效防止车体的倾翻;在坡道行驶和停车作业时,通过限制坡度和地面摩擦系数来研究支腿对车体的稳定性。
[Abstract]:With the development of transportation in China and the development of high grade railway and highway construction, the mechanization level of tunnel construction is becoming more and more urgent. The support of surrounding rock is the most important step in the construction of soft surrounding rock tunnel. In China, it mainly borrows manpower or uses auxiliary tools to install steel arches, which consumes manpower, complicated procedures, high labor intensity, low working efficiency and low safety assurance coefficient. Using mechanized installation vehicles to install steel arches not only saves time and effort, but also saves time and effort. And the installation accuracy is high. In this paper, the stability of steel arch mounting vehicle is studied. Firstly, the development of steel arch mounting vehicle at home and abroad is understood, and the solid model of boom system and working platform is established. Based on the overall design parameters, the 3D model of the arm system and work platform of the steel arch mounting vehicle is established by using SolidWorks software, and the accuracy of the model is ensured by means of interference check. Secondly, the mechanical analysis of the assembly model and the overall structure analysis of the steel arch frame mounting vehicle are carried out. At first, the components are assembled and the center of the pin shaft of the basic arm is taken as the coordinate origin. The mass characteristics of each component in the assembly body and the distance from the center of gravity of each component to the tipping line are measured by using the quality characteristics of the SolidWorks. Thirdly, the "stability coefficient method" (stability coefficient = stable torque / overturn torque 鈮，

本文编号：1923333