Bogie, rail vehicle and rail transit system

The utility model discloses a bogie, a rail vehicle and a rail transit system, the rail vehicle is suitable for running on a first rail beam and a second rail beam, the first rail beam comprises a first guide face and a second guide face, the bogie comprises a first steering assembly, a first guide assembly and a second guide assembly, the first steering assembly comprises a first steering yoke and a first machine shell, and the second steering assembly comprises a second steering yoke and a second machine shell. The first machine shell is fixedly connected with the first steering yoke. The first guide assembly is connected to the first machine shell, and the first guide assembly is suitable for rolling on the first guide surface; the second guide assembly is connected to the first steering yoke and suitable for rolling on the second guide face. According to the bogie, the first guide assembly and the second guide assembly are connected to the first machine shell and the first steering yoke of the first steering assembly correspondingly, the installation stability of the first guide assembly and the second guide assembly is improved, and then the steering stability of the railway vehicle is improved.