A new type of track inspection wagons (TIWs) for damage detection in urban rail transit systems is proposed to overcome the problems existing in traditional track inspection and ensure efficient and safe detection. Research on the dynamic testing and evaluation of TIWs is inadequate, which is not conducive to the design and improvement of similar products. Considering this, extensive dynamic performance tests and safety assessments under different running speeds were carried out on a new intelligent TIW. In this study, the rail misalignment and harmonic defects were designed to simulate the local irregularities in actual track lines. The accelerations of the axle-box, frames, vision modules, and wheel–rail forces were measured and analysed. Since the vision modules are the most critical components in the inspection system, the experiments focused on the evaluation of the safety of the visual module subjected to various track impacts. The experimental results indicate that the new intelligent TIW shows outstanding dynamic performance in the lab tests. Within the normal working range of the vision module, the vision modules of the wagon can withstand certain impacts from local rail local irregularities owing to its suspension design. Rail harmonic irregularity has a higher impact on wagon vibration than rail misalignment irregularity.

提出了一种新型的城市轨道交通系统中用于损伤检测的轨道巡检车（TIW），以克服传统轨道巡查中存在的问题并确保高效安全地进行探测。TIW的动态测试和评估研究不足，不利于类似产品的设计和改进。考虑到这一点，在新型智能TIW上进行了不同运行速度下的广泛动态性能测试和安全评估。在这项研究中，设计了轨道失准和谐波缺陷，以模拟实际轨道线上的局部不平整。测量并分析了轴箱，车架，视觉模块和轮轨力的加速度。由于视觉模块是检查系统中最关键的组件，实验着重于评估视觉模块在各种轨道冲击下的安全性。实验结果表明，新型智能TIW在实验室测试中显示出出色的动态性能。在视觉模块的正常工作范围内，旅行车的视觉模块由于其悬挂设计，可以承受来自局部轨道局部不平整的某些冲击。轨道谐波不规则对货车振动的影响比轨道未对准不规则的影响更大。由于其悬架设计，旅行车的视觉模块可以承受局部铁路局部不平整的某些影响。轨道谐波不规则对货车振动的影响比轨道未对准不规则的影响更大。由于其悬架设计，旅行车的视觉模块可以承受局部铁路局部不平整的某些影响。轨道谐波不规则对货车振动的影响比轨道未对准不规则的影响更大。