Tensile strength detector for steel bar detection and detection method thereof

The invention discloses a tensile strength detector for reinforcing steel bar detection and a detection method thereof. The tensile strength detector comprises a device base, and a steel pipe placing table and the device base are fixedly welded and fixed through a fourth supporting frame; a first pressure sensor is arranged in one first clamping and fixing block, a pair of second clamping and fixing blocks are transversely and oppositely arranged at the two ends between the two first clamping and fixing blocks, and a second pressure sensor is arranged on one side in one second clamping and fixing block; a pair of fixing rings is arranged, and connecting rings are arranged at the upper ends of the outer portions of the two fixing rings. A steel pipe is preferentially placed at the upper end of the steel pipe placing table, after being clamped, the steel pipe is limited by a wrapping anti-falling ring, a pair of first clamping and fixing blocks relatively move to preliminarily clamp the steel pipe, and then a p