Stacker cranes are the main lifting and transportation equipment in three-dimensional warehouses. It is a specialized lifting machinery equipment developed with the development of three-dimensional warehouses. The warehouse using this equipment can reach up to 40M. Most of them are between 10-25 meters. The main purpose of a stacker crane is to shuttle back and forth in the alleys of a three-dimensional warehouse. Store the goods located at the entrance of the alley in the cargo compartment. Or take out the goods from the cargo compartment and transport them to the alley entrance. This device operates intelligently within the warehouse. Other equipment needs to be equipped for warehouse entry and exit.