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In order to meet the requirements of rail fastening dynamic detection, we design a track fastener inspection system, including lighting system, camera system and installed on the bogie frame through the suspension system such as the front end. According to the model selection calculation of key equipment parameters, the installation structure is designed and the bolt strength of the suspension system is checked to verify the reliability of the bolt connection. ANSYS Workbench finite element analysis and laboratory verification were carried out for the overall vehicle structure. The system met the requirements and met the detection needs of the line.