Cable breakage-proof protection device

The utility model discloses an anti-breaking protection device for a cable. The device comprises a fixing ring, a return spring, a fixing plate and a limiting frame, a fixed plate is movably sleeved outside the cable; a return spring is fixedly mounted on the side surface of the fixed plate through a spring clamping piece; fixing rings are fixedly welded to the ends, away from the fixing plates, of the return springs. The return spring is fixedly installed outside the cable through the fixing ring. According to the technical scheme of the utility model, redundant cables are placed inside the cable trough. When the cable is pulled, the return spring is pulled open; extending a cable, increasing cable length, the cable can be effectively prevented from being snapped; when the pulling force disappears, the cable is pulled into the return spring under the influence of the restoring force of the metal deformation of the return spring; when the cable is pulled for the next time, the cable isfolded into the return s