Double-insurance wear-resistant compensator

The utility model discloses a double-insurance wear-resistant compensator. Wherein the corrugated pipe is arranged outside the core pipe in a sleeving mode, the anti-friction assembly is arranged at the end of the core pipe, and the sleeve is arranged on the outermost layer of the core pipe. The sleeve is respectively fixed through an anti-pull-off sealing assembly arranged at one end and a pull rod assembly arranged at the other end; the anti-pull-off sealing assembly comprises an L-shaped sealing box, a screw for fixing the L-shaped sealing box to the core tube, a bolt for fixing the L-shaped sealing box to the left stop block at the head of the sleeve, and an end plate welded to the core tube. A groove is formed by the left check block and a first-level protruding block arranged on thesleeve, the end of the baffle is clamped in the groove, a concave sealing ring is arranged at the end of the baffle, and a second-level protruding block matched with the concave sealing ring is arranged in the sleeve. The ant