High-precision steel strand relaxation testing machine

The utility model relates to the technical field of steel strand relaxation testing machines, and discloses a high-precision steel strand relaxation testing machine which comprises a base, a fixed box is fixedly connected to one side of the top of the base, a fixed plate is fixedly connected to the other side of the top of the base, and a guide rod is fixedly connected between one side of the fixed plate and one side of the fixed box. The number of the guide rods is multiple, the surfaces of the guide rods are slidably connected with a sliding plate, one side of the sliding plate and one side of the fixing plate are fixedly connected with clamping mechanisms, the number of the clamping mechanisms is multiple, one side of the top of the fixing box is fixedly connected with a first fixing block, and the top of the sliding plate is fixedly connected with a second fixing block. According to the high-precision steel strand relaxation testing machine, the situation that reading is not flexible when the sensor is da