Lifting appliance suitable for bored pile reinforcement cages with different diameters

The invention relates to a lifting appliance suitable for bored pile reinforcement cages with different diameters. The lifting appliance comprises a cross beam, a sliding device, a lifting lug, a shackle, a steel wire rope, a limiting device and a stiffening plate. The cross beam is formed by welding H-shaped steel into a whole; the sliding device is hung on a lower flange plate of the cross beam through a bearing and slides; the lifting lugs are fixed with the cross beam through welding; the shackle connects and fixes the steel wire rope and the lifting lug; the upper-end steel wire rope is used for connecting hoisting equipment with the cross beam, and the lower-end steel wire rope is used for connecting the sliding device with the drilled pile reinforcement cage; the limiting device is mounted at the end part of the cross beam to prevent the sliding device from derailing; the stiffening plates are arranged on the upper flange and the lower flange of the cross beam and used for enhancing the stability of th