A load handling device is disclosed for lifting and moving storage containers stacked in a grid framework structure having first and second sets of parallel rails or tracks. The load handling device includes: a body mounted on first and second sets of wheels arranged to engage with the tracks. A direction-change assembly is arranged to raise or lower the first set of wheels and or lower or raise the second set of wheels with respect to the body to engage and disengage the wheels with the tracks. The direction-change assembly includes a linkage-set having a series of members arranged between a traveller and a fixed brace, wherein the traveller is arranged to move under an applied force to cause the wheels to raise or lower.

An automatic storage and retrieval system includes: a delivery vehicle; a storage container carried by the delivery vehicle; and an unloading station for unloading an item from the storage container while it is being carried by the delivery vehicle. The unloading station includes: an unloading device; and a destination conveyor configured to convey the item to a target destination, wherein the unloading device is configured to move the item through a side opening of the storage container to the destination conveyor.

A mechanised container for use in a robotic storage and picking system is described. The container includes a base openable to deposit at least one item from the container in to a further container positioned by a load handling device beneath the first container. Each item can be stored in such mechanised containers in stacks within a robotic storage and picking system.

A drive belt assembly for a load handling device includes a drive belt; a drive wheel; and one or more driven wheels. A first tensioning arm, having a fixed end above an elbow and a rotatable distal end pivotally attached at the elbow, is horizontally displaceable relative to the drive wheel and driven wheels. A second tensioning arm is provided wherein the drive belt is routed around the first and second tensioning arms, and the first and second tensioning arms are arranged to put pressure on the drive belt to tension the drive belt.

A two-dimensional rail system includes a first set of parallel rails arranged to guide movement of container handling vehicles in a first direction across the top of the frame structure, and a second set of parallel rails arranged perpendicular to the first set of rails to guide movement of the container handling vehicles in a second direction which is perpendicular to the first direction. The first and second sets of parallel rails dividing the rail system into a plurality of grid cells. A container handling vehicle for operation on the rail system includes a wheel base unit including sets of wheels for guiding the container handling vehicle along the rail system in the first and second directions; a body unit; and a lifting device. The body unit includes: a lower section which is provided on the wheel base unit; a support section extending vertically from the lower section; and a cantilever section extending horizontally from the support section. The lower section has a footprint with a horizontal extent which is equal to or less than the horizontal extent of one of the grid cells and a top surface which is at a first height. The support section has a footprint with a horizontal extent which is smaller than the footprint of the lower section. The cantilever section extends beyond the footprint of the lower section. The lifting device includes a lifting frame that is suspended from the cantilever section of the body unit. The lifting frame has a lowermost part at a second height when the lifting frame is docked in an upper position adjacent the cantilever section. The second height of the lowermost part of the lifting frame, when the lifting frame is docked in its upper position, is above the first height of the top surface of the lower section of the body unit.

A system for condition-based maintenance of an automated storage and retrieval system includes a framework structure with a rail system forming a three-dimensional storage grid structure for storing storage containers for storing items. The grid structure forms vertical storage columns each having a horizontal area defined by the size of an access opening between rails of the rail system that are arranged on the framework structure. The rail system provides available routes for container handling vehicles handling and transferring the storage containers to and from the storage columns. At least one container handling vehicle which has a container handling platform with a set of grippers for handling the storage containers. The grid structure includes one or more ports for extracting containers from the storage grid so that the storage containers can be picked and a service station for performing maintenance on the components of the storage and retrieval system. The system further includes a plurality of sensors configured to be attached to components of the storage and retrieval system for providing condition-based information linked to parts and components of the storage and retrieval system, a service regime manager configured to retrieve condition-based information from the plurality of sensors and create a service regime based on the condition-based information linked to parts and components of the storage and retrieval system and send the service regime to a local service station where condition-based maintenance is performed, and a central computer system. The central computer system is configured to: receive the condition-based information from the plurality of sensors and decide what information is to be sent to a global computer system that is part of the system for condition-based maintenance, and further sending only the information that can be of interest to other storage and retrieval systems. The global computer system is configured to receive the condition-based information from the central computer system and determine trends regarding component servicing or changing of components and further the global computer system transfers the information on the trend to the individual central computer system's service regime manager.

A high-density storage system for goods is described in which totes carrying the goods are stored in a storage structure and stored and retrieved via stationary or mobile conveyers running along opposite ends of each layer of the storage structure. The totes may be moved to or from the conveyers as the rows move at a constant velocity toward or away from the conveyers. Totes at the ends of rows are quickly moved and stored in another row until the desired tote appears at the end of the row, at which point the desired tote is carried to an exit point of the storage structure by one of the conveyers.

An automated storage and retrieval system comprising an automated storage and retrieval grid and a delivery system. The automated storage and retrieval grid includes a container handling vehicle rail system for guiding a plurality of container handling vehicles and a delivery column adapted for transport of a storage container arranged in a stack of storage containers beneath the container handling vehicle rail system between a container handling vehicle and a delivery port situated at a lower end of the delivery column. The container handling vehicle rail system includes a first set of parallel rails arranged in a horizontal plane and extending in a first direction, and a second set of parallel rails arranged in the horizontal plane and extending in a second direction which is orthogonal to the first direction, which first and second sets of rails form a grid pattern in the horizontal plane including a plurality of adjacent container handling vehicle grid cells. Each container handling vehicle grid cell includes a container handling vehicle grid opening defined by a pair of neighboring rails of the first set of rails and a pair of neighboring rails of the second set of rails. The delivery system includes a remotely operated delivery vehicle including a container carrier adapted to support the storage container. The delivery vehicle is further adapted to transport the storage container between the delivery port and a second location for handling of the storage container by at least one of a robotic operator and a human operator.

Systems, methods, and machine-executable coded instruction sets are disclosed for fully- and/or partly automated handling of goods. For example, the disclosure provides improvements in storage and retrieval of containers in systems such as order processing systems.

A multi-tiered automated parcel sortation system is utilized to sort parcels according to a common destination. A first tier includes an automated sorter configured to transport parcels from a source location to a release destination. A second tier includes accumulation containers each associated with a shipping destination, and the release destination within the first tier is a positioned directly above the accumulation container associated with the shipping destination of the parcel. Once transported to the release destination, a parcel is released into the accumulation container, and once the accumulation container is filled, the accumulation of parcels within the container is released into a third tier, which may include conveyors or autonomous guided vehicles with transport containers. In the third tier, the parcels are transported away for further processing.