Tower crane and jacking device thereof

The utility model discloses a jacking device for a tower crane. The jacking device comprises a climbing rack, a jacking beam and jacking cylinders, wherein the jacking cylinders are arranged between the climbing rack and the jacking beam; the jacking beam is detachably and fixedly connected with a mounted standard knot; and the jacking cylinders are symmetrically arranged on two sides of the climbing rack. According to the jacking device for the tower crane, the mode of arranging a jacking cylinder at one side in the prior art is improved into a mode of symmetrically arranging the jacking cylinders on two sides of the climbing rack, so that the stress of the tower crane in the jacking process is balanced, the strength and stability of the jacking device are improved, and the safety of the tower crane in the jacking process is improved. In addition, the utility model also discloses a tower crane comprising the jacking device.