Elastic clamp

The utility model belongs to the technical field of thin-wall pipe fixing, and particularly relates to an elastic clamp of a thermal shrinkage double-wall pipe. The elastic clamp comprises a mold sleeve, a clamping piece and a clamping piece, wherein a limiting cavity for a pipe to penetrate through is formed in the mold sleeve; the clamping piece set and the positioning block set are arranged on at least one end face of the mold sleeve in a surrounding mode, the elastic piece provides the center gathering effect for the clamping piece set, the positioning blocks are fixed to the mold sleeve, and the clamping pieces and the positioning blocks are arranged at intervals and movably connected. The clamping piece set and the positioning block set define an oval inner cavity, and the size of the pipe ranges from the short axis size of the oval inner cavity to the diameter of the limiting cavity. According to the elastic clamp suitable for the thermal shrinkage double-wall pipe, quick clamping and releasing of the