Lifting device

The utility model discloses a lifting device. The device comprises a hoisting motor used for taking and placing a workpiece to be machined; the rotating unit is vertically arranged, a through hole is formed in the top of the rotating unit, and the I-shaped steel guide rail transversely penetrates through the through hole; one end of the I-shaped steel guide rail is connected with the hoisting motor through a roller; the other end of the I-shaped steel guide rail is connected with a balancing weight; the rotating unit can rotate by 360 degrees around the axis of the rotating unit. And the supporting unit is used for supporting the rotating unit. By means of the milling machine, the problems that in the prior art, time and labor are wasted when a workpiece to be machined is manually placed between milling machines, and the workpiece to be machined cannot be rapidly and accurately placed in the middle position are solved. And due to the structural design, the time is saved, the efficiency is improved, the phenom