Automatic warehousing system with means controlling elevator movement and/or load carrier horizontal speed for stabilizing load carrier

Abstract

Abstract A WAREHOUSING SYSTEM WHICH INCLUDES AN ARRANGEMENT FOR PREVENTING OR MATERIALLY REDUCING SUBSTANTIAL STRESS AND INSTABILITY OF A VERTICALLY ELONGATED LOAD CARRIER OF THE SYSTEM, DURING HORIZONTAL STOPPING AND/OR STARTING OF THE LOAD CARRIER MECHANISM. THE POWERED LOAD CARRIER MAY COMPRISE VERTICALLY ELONGATED HORIZONTALLY MOVABLE MAST STRUCTURE WITH AN ELEVATOR MOVABLE VERTICALLY WITH RESPECT TO THE MAST STRUCTURE, FOR DEPOSITING LOADS INTO AND REMOVING LOADS FROM A STORAGE RACK. THE LOAD CARRIER IS POWER DRIVEN BY ELECTRIC MOTORS AND IS PROVIDED WITH A CONTROL SYSTEM FOR CONTROLLING THE MOVEMENT OF THE LOAD CARRIER COMPONENTS, AND IN ONE EMBODIMENT MEANS ARE PROVIDED IN THE CONTROL SYSTEM FOR PREVENTING VERTICAL MOVEMENT OF THE ELEVATOR ABOVE A PREDETERMINED LEVEL WITH RESPECT TO THE MAST STRUCTURE DURING HORIZONTAL MOVEMENT OF THE MAST STRUCTURE. LIKEWISE, DURING POSITIONING MOVEMENT OF THE ELEVATOR WITH RESPECT TO THE MAST STRUCTURE ABOVE THE PREDETERMINED LEVEL, THE LOAD CARRIER IS POSITIONED AT A SELECTED LOAD HANDLING POSITION AND IS PREVENTED FROM HORIZONTAL MOVEMENT UNTIL SUCH TIME AS THE ELEVATOR DROPS DOWN TO OR BELOW THE PREDETERMINED LEVEL. IN ANOTHER EMBODIMENT, IF THE ELEVATOR HAS MOVED ABOVE THE AFOREMENTIONED PREDETERMINED LEVEL, DURING POSITIONING MOVEMENT, THE CONTROL SYSTEM IS SUCH THAT THE LOAD CARRIER IS PREVENTED FROM BEING ACTUATED INTO HIGH SPEED HORIZONTAL TRAVEL BUT INSTEAD IS MAINTAINED AT A REDUCED HORIZONTAL SPEED UNTIL SUCH TIME AS THE ELEVATOR DROPS DOWN TO OR BELOW SAID PREDETERMINED LEVEL.

Inventors

• 👤 Sanford Saul

Bibliographic Details