Reverse self-locking protection mechanism

The invention discloses a reverse self-locking protection mechanism. The reverse self-locking protection mechanism comprises a damping body, a ratchet wheel body, a mounting shaft, an external gear, a pin seat, a rotating shaft, a sealing ring, braking pins, braking springs, an axial bearing and a wave spring; the lower side of the damping body is connected with the front end of the ratchet wheel body; the sealing ring is arranged in a sealing concave ring; the external gear is arranged on the mounting shaft which is arranged between a first groove in the damping body and a second groove in the ratchet wheel body; a bearing step is arranged at the large circular hole end in the pin seat; a plurality of pin holes are formed in one end of the pin seat; the axial bearing is arranged in the bearing step of the in seat; the shaft head of the rotating shaft penetrates through a large circular hole; each braking spring is arranged between the lower end of each the braking pin and the bottom surface of the correspond