Power and free chain blocking device

The utility model belongs to the technical field of power and free chain conveying, and discloses a power and free chain blocking device which comprises an installation frame installed on a power and free chain track, an installation plate is arranged on the installation frame, an air cylinder is installed on the installation plate, the shaft end of the air cylinder is connected with a push rod, the lower end of the push rod is connected with a transverse plate, and the two ends of the transverse plate are rotationally connected with baffles respectively. The middle of the baffle is rotationally connected with the mounting frame, and a bending structure used for blocking the hanger trolley is arranged at the free end of the baffle. According to the power and free chain blocking device, when the power and free chain blocking device works, the air cylinder pulls the push rod to move upwards to lift the transverse plate, the two baffles are converted into the closed state from the open state, the bent structures