Pressure calibration device of strength test bench

The utility model discloses a pressure calibration device of a strength test bench, which comprises a base and a pressure detection device fixedly arranged at the top end of the base, the pressure detection device comprises a mounting plate and a calibrator mounted on the mounting plate, and the upper end and the lower end of the calibrator are respectively connected with an upper limiting seat and a lower limiting seat for centering and limiting the calibrator; wherein the top end of the upper limiting seat is connected with a piston rod of an oil cylinder in the strength test bed through a pressing plate, and the lower limiting seat is fixed on the mounting plate. According to the invention, the pressure of the strength test stand can be detected and corrected, and the detection accuracy of the strength test stand is improved; the two ends of the calibrator are inserted through the upper limiting base and the lower limiting base respectively, the centering and limiting effects on the calibrator are achieved