Novel manipulator safety protection device

The utility model relates to the technical field of safety protection devices, and discloses a novel mechanical arm safety protection device which comprises a mechanical arm, a fixing block is arranged on the outer wall of the mechanical arm, the outer diameter wall face of the fixing block is in a regular octagon shape, and three safety contact edges and three rotary knobs which are distributed in an annular array at intervals are arranged on the outer diameter wall face of the fixing block. A telescopic fixing device is arranged in a cavity of the fixing block and comprises an equipment block. The fixing block is arranged on the outer wall of the mechanical arm, and the safety contact edge is arranged on the outer wall of the fixing block, so that when a worker extrudes the safety contact edge, the safety contact edge directly feeds back an abnormal signal to the main line to stop the line, or when equipment is abnormal, the worker can touch the safety contact edge to stop the main line; and meanwhile, the