Water injection box for railway vehicle

The utility model discloses a water injection box for a railway vehicle, and belongs to the technical field of railway vehicle design. According to the technical scheme, the water injection box for the railway vehicle comprises a box body assembly, a door lock assembly, a safety protection mechanism for damping a box cover and a water injection assembly, wherein the box body assembly and the door lock assembly are matched with each other; the box body assembly comprises a box body, one end of the box body is open, and the other end is provided with a first mounting hole and a second mounting hole; the open end of the box body faces outwards and is installed at an opening of the side wall of the vehicle body in a sealed mode. The opening of the side wall of the vehicle body communicates with the clean water box. The door lock assembly comprises a box cover and a door lock arranged between the box body and the box cover; the water injection assembly comprises a water injection opening installed at the first ins