EP3795501

• Ocado Innovation Limitedsince Feb 19, 2021

A load handling device (100) for lifting and moving containers (106) stacked in a storage system comprising a plurality of rails (22a, 22b) or tracks arranged in a grid pattern above the stacks of containers. The grid pattern comprises a plurality of grid spaces and each stack being located within a footprint of only a single grid space, the load handling device being configured to move laterally on the rails or tracks above the stacks. The load-handling device comprises: a container-receiving space (120) located above the rails or tracks in use and a lifting device (104) arranged to lift a container from a stack into the container-receiving space. One or more wheel lift motors (188) or other wheel lift devices are housed in a vehicle module for raising and lowering one of the sets of wheels (116, 118) with respect to the other set of wheels.