Internal climbing tower crane is installed in the structure of the building internal elevator shaft or special openings, with the rise of the building structure, the tower with the help of climbing mechanism to climb the lifting machinery, generally every 1 to 2 floors to climb. By the base, set frame, tower, tower, crane crane, balance arm and other parts.

Advantages: small fuselage, light weight, do not need to lay the track, do not occupy the building peripheral space, and so on, suitable for site narrow high-rise building construction.

The disadvantage is that all the load of the crane is borne by the building, the building structure needs to be strengthened; Poor vision of the driver; A set of auxiliary equipment is required for crane disassembly.

(1) return the crane trolley to the minimum range, drop the hook and use the hook to hang the lifting ring of the jacket frame;

(2) loosen the anchor bolt of the fixing sleeve frame, pull the movable leg into the sleeve frame beam, lift the sleeve frame to the required height, shake out the movable leg of the sleeve frame, and fix it with the anchor bolt;

(3) loosen the anchor bolt of the base, withdraw its movable leg, start the climbing mechanism to lift the crane to the required height, shake out the movable leg of the base, and fasten it with the anchor bolt.