The utility model relates to a power shovel rotary teeth wheel fixed knot construct, including gyration vertical scroll, housing pin, check bolt and rotary teeth wheel, the rotary teeth wheel is installed on the gyration vertical scroll, and the tip of gyration vertical scroll has central threaded hole, and the housing pin is installed through central threaded hole and carry out axial fixity, its characterized in that on the gyration vertical scroll and to the rotary teeth wheel: still include adjusting shim, adjusting shim locates between the terminal surface of housing pin and gyration vertical scroll, there are 4 locking screw holes at the center of using central threaded hole on the terminal surface of gyration vertical scroll as centre of a circle equipartition, be equipped with 4 arc -waist holes that correspond with the locking screw hole on the housing pin, the tip of gyration vertical scroll is installed and is run through arc -waist hole and locking screw hole complex check bolt. The utility model discloses assembling successful rate can be improved, equipment job stabilization is guaranteed.