Brake execution system

The utility model provides a brake execution system, which comprises a first gear, a second gear and a third gear, the second gear is meshed with the first gear; the rotary braking mechanism comprisesa rotary shaft and a braking assembly, the rotary shaft is rotationally connected to the braking assembly, one end of the rotary shaft penetrates through the second gear, and the braking assembly isused for limiting rotation of the rotary shaft; the locking mechanism is arranged on the second gear and used for locking the rotating shaft to enable the second gear and the rotating shaft to synchronously rotate or stop; and the driving mechanism is used for driving the locking mechanism. According to the utility model, the second gear, the rotary brake mechanism and the locking mechanism are matched with the first gear; traditional brake calipers and brake pads are replaced; the rotation of the rotating shaft is limited through the brake assembly, the rotating shaft and the second gear arelocked through the locking