Over-line stack pile conveying method and system

The invention provides an over-line stack pile conveying method and system. Over-line stack pile conveying can be achieved, and truck loading efficiency is improved. The over-line stack pile conveying method and system over-line stack pile conveying system comprises lifters, wherein the lifters include a first lifter arranged at an output station and the second lifters arranged at all target stations, a first opening for stack piles to be moved out is formed in the upper portion of the first lifter, and second openings for stack piles to be fed are formed in the upper portions of the second lifters. The first opening is communicated with the second openings through a first conveying line, and the stack piles can be sequentially transferred to the first conveying line and the second lifters by the first lifter. The over-line stack pile conveying method comprises the steps of lifting the stack piles of the output station to be at first predetermined height, transversely moving the stack piles to the positions above the target stations and enabling the stack piles to descend to the target stations. The stack piles can be directly lifted from the output station to the position above the output station so as to avoid the line and then are conveyed from the position above the output station to the target stations, and the over-line stack pile transportation problem is effectively solved.