Universal closed card

The utility model discloses a universal closed card, which comprises a card main body and a bushing, wherein the clamp main body is an annular clamp and comprises a primary clamp and a secondary clampwhich are detachably connected, and an annular groove is formed in the inner wall of the clamp main body; the outer diameter of the lining is matched with the inner diameter of the clamp body, and anannular clamp protrusion is arranged on the outer wall of the lining. The lining is arranged in the clamp body, the clamping protrusion is clamped into the groove, and the primary clamp and the secondary clamp tightly lock and hold the lining through fasteners. When the clamp is used, bushings with different inner diameters are selected according to different types of steel caps on different insulators, then the selected bushings are placed in the clamp main body, the clamp bulges are clamped in the grooves to finish primary positioning, and then the primary clamp and the secondary clamp arelocked and clasped through