Pulley block combined type lifting hook for ultra-large type hoisting equipment

The invention relates to a pulley block combined type lifting hook for ultra-large type hoisting equipment. The pulley block combined type lifting hook comprises a lifting hook connecting body and a lifting hook main structure; the lifting hook connecting body is installed at the lower end of the lifting hook main structure, and a plurality of connecting holes arranged on one horizontal line side by side are formed in the upper end of the lifting hook main structure; and the pulley block combined type lifting hook is characterized by further comprising a plurality of pulley blocks which comprise pulley set balance beams, large pulley sets and/or small pulley sets, connecting frames and pulley set conventional balance beams, and a single set or multiple-set balance combination is connected to the upper end of the lifting hook main structure through the pulley set balance beams. Compared with the prior art, by means of the unique pulley block arrangement manner, the structures of the lifting hook and a cargo boom head are more compact, and the space using rate is high; meanwhile, the stress of structural members is more reasonable, and component transportation is more convenient; combination of lifting hooks for various tons is achieved through conversion of the pulley blocks, the pulley block combined type lifting hook is suitable for more working conditions, and the conversion manner is variable; and the pulley block combined type lifting hook is suitable for combination of the pulley blocks in any number, and all pulley blocks can be balanced.