Vehicle rotation device and system

A system for rotating an autonomous vehicle operating on a rail system of an automated storage and retrieval system, of the type having a framework structure comprising a plurality of vertical upright members defining storage columns for storing stacks of storage containers, with the rail system arranged on the framework structure, the rail system comprising perpendicular tracks, the intersection of which define a grid having grid cells, the grid cells defining openings to the storage columns, and where the vehicle is of the type having wheels that travel along the rail system, and which changes direction by alternatively lifting or lowering sets of wheels, one set of wheels adapted for travel of the vehicle in a first direction, and a second set of wheels adapted for travel of the container handling vehicle in a second direction, perpendicular to the first direction, wherein the system comprises:

• a. rotation device comprising a module adapted for mounting in a grid cell beneath a plane defined by the rail system of the framework structure,
• b. a stationary member affixed to the bottom of the module,
• c. wherein the vehicle and/or the module comprises a mechanical linkage arranged to transfer a force from the vehicle to the stationary member, whereby the force is converted into a rotation of the vehicle
• d. a control system arranged to issue commands to the vehicle to initiate and complete a rotation.