Rail maintenance vehicle

The embodiment of the utility model provides a track maintenance vehicle which comprises a vehicle frame, a cab, a bogie and a track maintenance vehicle frame, the vehicle frame is of an arch structure, the cab is installed on the vehicle frame, the bogie is installed at the bottom of the vehicle frame, and the track maintenance vehicle frame is installed below the arch structure of the vehicle frame. The transverse moving mechanism comprises a supporting structure, a rotating mechanism and a transverse moving mechanism, and the transverse moving mechanism can transversely move relative to the frame and can also rotate under the driving of the rotating mechanism; and a track maintenance working device is hung on the track maintenance vehicle frame. According to the track maintenance vehicle, transverse width and angle adjustment of the maintenance working range can be achieved, the longitudinal size of the track maintenance vehicle frame is short, the distance between a measuring point and a track maintenance