Behind the efficient operation of railway freight transportation, the pre - and post loading and unloading operations in the freight yardThe "three inspections" work is a key link in ensuring transportation safety. Under the traditional manual inspection mode, workers need to travel back and forth in complex freight yard environments, facing challenges such as multiple tracks, diverse vehicle types, and detailed inspection items. This not only takes time and effort, but also poses risks of missed inspections and safety hazards. With the deep integration of intelligent technology and logistics industry, freight yard inspection robots have emerged, bringing revolutionary changes to the "three inspections" operation of railway freight transportation with their precise perception and efficient collaboration characteristics.