Selective Pallet Rack is the most common style of pallet racking. It provides easy access to every load with quick stacking and unstacking times.
Push-back systems operate on a set of carts designed for high-density storage. This system supports tracks from two to six pallets deep.
Drive-In systems are made up of adjacent racking units that create interior aisles. The pallets are placed on rails running along both sides of each aisle.
Pallet and Carton Flow systems are compact and designed with roller track sections. Pallets are placed on sloped lanes allowing palletized loads to easily glide over them.
Cantilever systems are composed of heavy columns with a series of arms connected that loads are placed on. Available as single or double sided.
Modules are larger structures that serve a variety of purposes. These multi-level systems are ideal for product picking.
A fixed-aisle AS/R machine (stacker crane) is one of two main designs: single-masted or double masted. Most are supported on a track and ceiling guided at the top by guide rails or channels to ensure accurate vertical alignment, although some are suspended from the ceiling. The 'shuttles' that make up the system travel between fixed storage shelves to deposit or retrieve a requested load (ranging from a single book in a library system to a several ton pallet of goods in a warehouse system). The entire unit moves horizontally within an aisle, while the shuttles are able to elevate up to the necessary height to reach the load, and can extend and retract to store or retrieve loads that are several positions deep in the shelving.
Another AS/RS technology is known as shuttle technology. In this technology the horizontal movement is made by independent shuttles each operating on one level of the rack while a lift at a fixed position within the rack is responsible for the vertical movement. By using two separate machines for these two axes the shuttle technology is able to provide higher throughput rates than stacker cranes.
There are other types of Automated Storage & Retrieval Systems (AS/RS) devices called Unit-load AS/RS, Mini-load AS/RS, Mid-Load AS/RS, Vertical Lift Modules (VLMs), Horizontal Carousels and Vertical Carousels. These systems are used either as stand-alone units or in integrated workstations called pods or systems. These units are usually integrated with various types of pick to light systems and use either a microprocessor controller for basic usage or inventory management software.
With experience in various types of systems, we're prepared to tackle your AS/RS project!