摘要
地质雷达检测推车有助于高效、便捷地开展城市道路路基病害详查工作,而推车的动力学分析是实现推车机械结构优化和改善性能的基础。对GR便携式地质雷达检测推车开展Adams下的动力学仿真分析,依次分析推车在正常检测"人"字状态和快速前行"一"字状态下天线连接轴、车轮滚动轴关键节点的受力情况。分析结果表明:小推车在平坦路面上的滚轮节点受力大于天线节点;但与路面凸台等发生触碰时,以60~100N的仿真推力作用,两节点受力最大呈20~30倍激增,天线节点受力大于滚轮节点;另外快速前进时天线壳体承载较大冲击力作用。分析结果为GR地质雷达优化设计,尤其是推车关键连接轴和天线壳体的优化设计提供了依据。
It is convenient and effective to detect subgrade defects of urban road with detection trolley equipped with ground penetrating radar,and dynamic analysis is the basis of improvement of its performance and mechanical structure.In this paper,dynamic simulation analysis of GR portable ground penetrating radar trolley based on Adamas is studied.The force of the key nodes of the antenna connection shaft and the wheel rolling shaft are analyzed respectively under the normal detection of the wing-shaped state and the rapid forward row-shaped state of the cart.The results show that the stress of roller node is greater than that of antenna node,when the trolley work on the flat road.However,when the trolley collides with the pavement boss,the maximum stress of the mentioned two nodes increases by about 20~30 times with the simulated thrust of 60~100 N,and the stress of antenna node is greater than that of roller node.In addition,the antenna shell bears a great impact force when it moves forward rapidly.The analysis results provide scientific basis for optimal design of GR GPR,especially for its antenna connecting shaft and wheel rolling axle.
作者
李涛涛
方亮
何宇
凌熊健
LI Tao-tao;FANG Liang;HE Yu;LING Xiong-jian(School of Mechanical and Electronic Engineering,Pingxiang University,Pingxiang 337055,China;School of Mechanical Electronic and Information Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)
出处
《公路》
北大核心
2021年第7期76-81,共6页
Highway
基金
国家自然科学基金资助项目,项目编号41504112
江西省高等学校教学改革研究省级项目,项目编号JXJG-19-22-12
江西省教育厅科学技术研究项目,项目编号GJJ181104。
关键词
地质雷达(GPR)
路基检测推车
动力学
仿真分析
ground penetrating radar(GPR)
subgrade detection trolley
dynamic
simulation analysis
