Cab framework, cab and rail vehicle

The invention relates to the technical field of railway vehicles, and provides a cab framework, a cab and a vehicle. The cab framework comprises a cab rear end beam and is suitable for being connectedto a cab hood through the cab rear end beam. A water guide groove is suitable for being connected between the cab rear end beam and the cab hood, the water guide groove is provided with a water guideopening, and the water guide opening faces a splicing seam between the cab rear end beam and the cab hood. According to the cab framework provided by the embodiment of the invention, the water guidegroove is formed between the cab rear end beam and the cab hood, so that seepage water between the cab rear end beam and the cab hood can be collected and discharged, the seepage water can be effectively prevented from entering the cab, and the influence of external seepage water on equipment in the cab is avoided; and the potential safety hazard of driving caused by water seepage is eliminated. Moreover, the cab framework