Stretching device for detecting high-elongation anti-cracking cable

The utility model discloses a stretching device for detecting a high-elongation anti-cracking cable, relates to the technical field of cable detection, and aims to solve the problem that a common stretching device for detecting the high-elongation anti-cracking cable in the prior art is not good enough in cable fixing effect. A first clamping device is installed below the sliding arm, the first clamping device is fixedly connected with the sliding arm, a sliding shaft is installed in the first clamping device, the sliding shaft is fixedly connected with the first clamping device, and a first electromagnetic suction plate and a second electromagnetic suction plate are arranged in the first clamping device; the first electromagnetic suction plate and the second electromagnetic suction plate are both slidably connected with the sliding shaft, a first clamping base is installed on one side of the first electromagnetic suction plate and fixedly connected with the first electromagnetic suction plate, and a second c