Multi -functional transformer respirator changes instrument for solve transformer respirator and change inconvenient problem. Including motor, carousel, adjustment disk and support column, be equipped with a plurality of slides along circumference evenly distributed on the carousel, be equipped with the recess that has a perfect understanding with the slide at the lower terminal surface of carousel, rotate upward to move at the lower terminal surface of carousel and install the adjustment disk, be equipped with the fixed loop on the installation face of adjustment disk, evenly be provided with the plectrum the same with slide quantity on the outer wall of fixed loop, slidable mounting has the support column in each slide, is equipped with the spring between support column and carousel, in the oriented trend that moves carousel center one side of keeping away from of the effect bottom suspension dagger of spring, each support column contacts with the inboard of plectrum, be equipped with the locking part between carousel and adjustment disk, the output shaft of motor passes behind the centre bore the central fixed connection with the carousel. This change instrument flange of can uninstalling fast to the not unidimensional flange of ability uninstallation, the commonality is strong.