Building PC component corner-falling trimming device with polishing function

The utility model provides a building PC component corner-falling trimming device with a polishing function, which comprises a fixed seat, an electric telescopic rod is fixedly mounted at the top of the fixed seat, a fixed plate is fixedly mounted at the telescopic end of the electric telescopic rod, fixed frames are fixedly mounted on two sides of the fixed plate, and trimming mechanisms are mounted in the two fixed frames. The polishing device has the advantages that the two fixing frames are pushed to move horizontally through stretching and retracting of the arranged electric telescopic rods, the two fixing frames are moved to the horizontal position of use, the two driving motors rotate to drive a transmission belt on the driving rotary disc, the driving rotary disc rotates to drive the driving rotary disc to rotate, and the polishing machine is driven to move to the horizontal position of use. And through transmission of a transmission belt, rotation from a rotating shaft at the bottom end of a transmis