The container hang in the middle of the closed wirerope which is around the wound roll,when the motor drives the wound roll .Fiction with the wound roll and wirerope achieves the improvement and clecentralization of the container and through driving the electri to realize timing.Disc brake through hydraulic and electric control to realize braking.Through various position indicator system to realize the depth of the container instrution .Through a variety of sensors and control elements to achieve the mechanical electrical hydraulic joint system to do the monitoring and protection of the whole machine.Through computer and network techniques to realize hoist internal and external information transminion.