High-speed rail box girder damage detection machine vehicle and damage detection method

The invention discloses a high-speed rail box girder damage detection machine vehicle and a damage detection method. The machine vehicle comprises a bearing and walking module, a detection module, a control module and a data processing module. The bearing and walking module is provided with a bearing trolley; the detection module is arranged on the bearing trolley and is used for detecting and obtaining a panoramic image, ultrasonic information, a laser signal and pose information in the box girder; the control module is used for controlling the bearing trolley to realize self-walking and damage detection in the beam body according to the laser signal and the pose information; the data processing module is used for performing beam body internal surface crack image recognition based on a crack intelligent detection algorithm according to the box beam internal panoramic image to obtain crack information; according to the ultrasonic information, carrying out defect identification in the beam body based on an ult