The utility model provides a modular it is balanced heavy, belongs to the navigation engineering and arranges the field, and especially a hydraulic ship lift is balanced heavy. Include: wire rope, synchronizing shaft, reel, balanced heavy hoisting point, hoisting point movable pulley, balanced heavily main body, balanced heavy connecting rod, balanced heavy bottom centrum. Rotation axis in the middle of every reel passes through synchronizing shaft clutch interconnect with synchronizing shaft. The utility model has the advantages of: offset the poor moment of torsion that reduces the synchronizing shaft production of displacement between independent balanced the weight, it is dark to have increased the drinking water, improves the interior rivers of shaft and to the balanced impact who weighs the bottom, has simplified the design of mechanical synchronous system greatly, preparation simple process, construction convenience, saving investment.