Curtain wall lifting device

The utility model relates to a curtain wall lifting device applied to a curtain wall unit plate production line. Wherein the workbench is used for bearing a curtain wall unit plate, and the hydraulic cylinders are arranged between the base and the workbench so as to drive the workbench to ascend and descend vertically. A cylinder body of each hydraulic cylinder is fixedly installed on the base, a leveling mechanism used for adjusting the levelness of the workbench is arranged between a piston rod of each hydraulic cylinder and the workbench, and each leveling mechanism comprises a sleeve, a thrust bearing and an adjusting nut. The sleeve is fixedly installed at the bottom of the workbench. The thrust bearing is arranged between the adjusting nut and the sleeve, so that the adjusting nut circumferentially rotates relative to the sleeve and is axially fixed; the end of a piston rod of the hydraulic cylinder penetrates through the adjusting nut and is inserted into the sleeve, and the end of the piston rod of th