Patent attributes
The present invention is to provide a solution of high density storage and goods-to-man picking by proposing a three dimensional warehouse system for accurate inbound and outbound operation and management and improved space utilization rate of the warehouse. The technical solution includes a rack, containers, carrier vehicles, and track-switching devices. The rack includes a track structure and defines at least one load-bearing platform. The track structure includes running tracks, and the at least one load-bearing platform located below the running track. Each container stores goods, and part of the containers are stacked and placed on the at least one load-bearing platform. The carrier vehicle moves back and forth on the running tracks to perform storage and retrieval operations in the container storage system. The track-switching device is configured to switch the carrier vehicle from a current running track where the carrier vehicle is located to a target running track.