Automatic braking device

The utility model discloses and aims at providing an automatic braking device which is capable of working in an automation mode, improving working efficiency and ensuring quality of products. The automatic braking device comprises a base, wherein a motor, a first connecting bar, a second connecting bar, a locating sleeve and a pedal push head are arranged on the base, the motor is provided with a disk, the disk is provided with a center shaft, a distance is reserved between the axis of the center shaft and the center of a circle of the disk, one end of the first connecting bar is hinged with the center shaft, the other end of the first connecting bar is hinged with one end of the second connecting bar, the other end of the second connecting bar is connected with the pedal push head, the locating sleeve is installed on the base, and the second connecting bar is connected in the locating sleeve in a sliding mode. The automatic braking device has the advantages of being capable of working in the automation mode,