A twin lifting machinery for two 40 feet container shore crane is
disclosed, comprising motors, high speed shaft brakes, two reductors, a
plurality of multiple-project rope reels, and a plurality of reel brakes;
wherein at least two motors and two reductors are provided; the input
shafts of said two reductors connect to one of the output shafts of the
motors respectively, and the output shafts of each reductor connect to
the reels, the reel brakes are provided on each reel respectively. The
synchronous operation or individual operation of two sets of lifting
machineries under electrical control can be carried out, achieving the
lifting and lowering operation of two hanger tools of sea side and land
side The twin lifting machinery thus can carry out both the synchronous
operation of two hanger tools and the individual operation of a single
hanger tool, increasing the loading and unloading efficiency of the
container crane by more than 60%.