Lifting device for building steel structure hoistway and method for building steel structure hoistway

A lifting device for building a steel structure hoistway, comprising:

• a lifting mechanism comprising a bottom platform, a middle platform and a top platform, wherein the middle platform and the top platform each comprise telescopic brackets so as to be supported on cross beams of the steel structure hoistway built, the top platform is connected with the bottom platform through a plurality of columns, and the middle platform moves along the plurality of columns as driven by a driving device;
• and
• a crane mechanism arranged on the top platform of the lifting mechanism and comprising a base and a crane on the base, wherein the base is arranged on the top platform and is rotatable relative to the top platform along a vertical axis, and a hanger frame of the crane is movable between a vertical orientation and an inclined orientation;
• wherein the lifting mechanism is configured to ascend and descend in the steel structure hoistway built, and the crane mechanism is configured to lift building materials for use in building the steel structure hoistway;
• wherein the plurality of columns comprises at least one screw rod and a plurality of guide columns, and the middle platform comprises a nut sleeved on the at least one screw rod and a bearing sleeved on at least one of the plurality of guide columns.