Glossary


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1) Exchange pallet

Refers to a pallet that is used by several shippers whose ownership is transferred when the ownership of the unit load is transferred.

2) Double row, double face shelving

One generally continuous row of units joined together, back to back and side to side to be serviced from two service aisles.

3) Electric Hoist

A suspended machinery unit that is powered by electrically driven motors and is used to lift or lower a freely suspended (unguided) load.  Generally uses chain or wire rope as its lifting medium.

4) Drive in rack

This type of rack utilizes upright frames, rails, and ties to allow a vehicle to enter a storage rack structure from one side only and pick up or deliver pallets on continuous rails.  Drive-in rack is used to address repetitive products and serves to take advantage of cubic space available for storage, when such unit loads do not lend themselves to block stacking.

5) Fixed Aisle Storage & Retrieval

Fixed Aisle (F/A) Storage & Retrieval Systems consist of one or more long, narrow aisles framed on both sides by a steel (and sometime extruded aluminum) storage rack structure into and from which loads are automatically stored and retrieved under computer control. The storage/retrieval function in each aisle can be performed a variety of ways.  However, the most  common was is by a machine that consists of a floor running, traveling structural frame or vertical mast that guides and supports a hoisting carriage on which loads are carried. One or more shuttles or insertion/extraction devices on the hosted carriage manipulates loads into and out of adjacent or opposing storage rack positions. All three machine motions; horizontal (down aisle), vertical and shuttle action are independently and automatically controlled. See also Carousels , Unit Load AS/RS , Mini-Load AS/RS and/or Micro Load AS/RS .