Grinding head lifting structure

The utility model discloses a grinding head lifting structure, which comprises a mounting seat, a grinding head, a grinding head, a driving device and a lifting device, wherein a shaft sleeve penetrating through the mounting seat is vertically arranged on the mounting seat; the lifting main shaft penetrates through the shaft sleeve; the supporting plate sleeves the lifting main shaft, the lower end face of the supporting plate makes contact with the upper end face of the shaft sleeve, lifting air cylinders are vertically arranged on the two sides, close to the mounting base, of the supportingplate, and piston ejector rods penetrating through the supporting plate are arranged at the output ends of the lifting air cylinders; the upper ends of the lifters are fixedly arranged on the two sides of the mounting base corresponding to the lower ends of the piston ejector rods. The beneficial effects of the utility model are that: the utility model discloses a beneficial effect is: the supporting plate is sleeved on t