Telescopic lifting appliance

The utility model discloses a telescopic lifting appliance. Including boom, the suspender is composed of a girder and a small beam. A pipe support is welded at one end of the crossbeam; a first hoisting plate and a second hoisting plate which are vertically arranged are welded at the other end; girder of hollow structure, one end of the small beam extends into the girder inner cavity; a third hoisting plate and a fourth hoisting plate which are vertically arranged are welded to the other end of the small beam, a side reinforcing plate is welded to the outer wall of the large beam, at least twofirst pin shaft holes are formed in the small beam, a plurality of second pin shaft holes are formed in the outer wall of the large beam, and the large beam and the small beam are connected through fixing pins. The structure is simple and firm, operation and installation are convenient and accurate, and work efficiency is improved; in addition, the length of the suspender is adjustable, and the suspender can be lifted at