Counterweight pulley block

The present invention discloses a counterweight pulleys, which includes a horizontal wheel structure, spreader, the lifting mechanism comprises a first horizontal rope wheel structure, a first pulley, a second pulley, a third pulley, a fourth pulley, the second cable , pin, turnbuckles, the fifth pulley, the sixth pulley, the second cable end is fixed main structure of the crane, the other end of the second through the fifth wire rope pulleys, a fourth pulley, the third pulley, the sixth pulley and a counterweight is connected; a first rope is fixed by pins, turnbuckles and spreader, and through the first pulley, the second pulley is wound on the hoisting mechanism. The present invention can work together with a counterweight to balance the weight of the non-effective working load spreader, not only good energy saving effect and applicability, easy to spread.