Patent attributes
An automatic storage system includes a front rack and a rear rack, a stacker crane, and a crane controller. The front rack and the rear rack include a plurality of shelves located in a right and left direction and in an up and down direction. Each of the shelves includes a near-side storage portion and a far-side storage portion arranged in the depth direction. The stacker crane includes an elevator provided at the travelling vehicle such that the elevator can move up and down. The crane controller is programmed to control the elevator to move vertically between an upper stop position and a lower stop position when the article is transferred between the slide fork and the shelves. The upper stop position includes a far-side upper stop position corresponding to the far-side storage portion and a near-side upper stop position corresponding to the near-side storage portion. The crane controller controls the elevator such that the far-side upper stop position is higher than the near-side upper stop position.
