Large-inflection-point intelligent pulley block for cable laying

The invention relates to a large-inflection-point intelligent pulley block for cable laying, and belongs to the technical field of pulley blocks for power construction. Comprising an upper flange and a lower flange, a plurality of spaced sub-pulleys are connected between the upper flange and the lower flange in a screwed mode, the distance direction between the upper flange and the lower flange is the height direction of the sub-pulleys, the sub-pulleys are annularly distributed between the upper flange and the lower flange, an upper flange bearing is arranged at the circle center of the upper flange, and a lower flange bearing is arranged at the circle center of the lower flange. The upper flange bearing and the lower flange bearing are coaxially arranged, the outer diameter of the sub-pulley is gradually reduced from the two ends in the height direction to the middle position in the height direction, and therefore an arc-shaped groove facilitating passing of a traction rope and a cable is formed in the oute