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RACK STORAGE SYSTEM AND METHOD FOR OPERATING IT

  • US 20150336741A1
  • Filed: 12/21/2012
  • Published: 11/26/2015
  • Est. Priority Date: 12/21/2011
  • Status: Active Grant
First Claim
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1. Rack storage system comprisinga rack storage (1) having storage racks (12a, 12b), exhibiting storage places (17) for load (2) in rack levels (16) situated one above the other, anda load manipulation unit (4



  • ), comprising at least one first load-lifting device (34a;

    84a) with a liftable and lowerable transport device (36a;

    86a) for storing and retrieving load (2) as well as a first buffer device (35a;

    85a) with provisioning devices (43, 44) for temporarily storing one or more pieces of load (2), andat least one rack aisle (15) extending between adjacent storage racks (12a, 12b) and along the load-lifting device (34a;

    84a) as well as the first buffer device (35a;

    85a), andguide tracks (20) running in at least some of the rack levels (16) along the rack aisle (15), andone or more autonomous conveyor vehicles (3) displaceable along the guide tracks (20) for transporting the load (2) between the storage places (17) of the storage racks (12a, 12b) and the provisioning devices (43, 44) of the load manipulation unit (4



    ), anda conveying system (106a, 107a) connected to the load-lifting device (34a;

    84a) for transporting load (2) to and from the load-lifting device (34a;

    84a), whereinthe conveying system comprises a first conveying device (106a) for transporting load (2) to the load-lifting device (34a;

    84a) and a second conveying device (107a) for transporting load (2) from the load-lifting device (34a;

    84a), the first and second conveying devices (106a, 107a) are essentially arranged one above the other on a level with the corresponding rack levels (16) and extend in the extension of a storage rack (12a, 12b), andwherein the buffer device (35a;

    85a) in at least some of the rack levels (16) comprises a fixed first buffer path section (41a) and fixed second buffer path section (42a),where the provisioning devices (43, 44) are arranged in, andwith the load-lifting device (34a;

    84a) being such arranged that its transport device (36a;

    86a) for storing and retrieving load (2) can be vertically positioned relative to the rack levels (16) either between two oppositely situated provisioning devices (43, 44) or in front of the front side of one of the conveying devices (106a, 107a), so that a load (2) may either be conveyed between the transport device (36a;

    86a) and one of the provisioning devices (43, 44) or between the transport device (36a;

    86a) and one of the conveying devices (106a, 107a), whereinthe provisioning devices (43) of the first buffer path section (41a) each form a removing path for the load (2) in each rack level (16) where they are arranged in, and the provisioning devices (44) of the second buffer path section (42a) each form a storing path for the load (2) in all rack levels (16) where they are arranged in, and whereinin a conveying section adjacent to the load-lifting device (34a;

    84a) at least one of the conveying devices (106a;

    107a) also comprises a provisioning device (108;

    110) for temporarily storing one or more pieces of load (2), the provisioning devices (43;

    44, 108;

    110) situated opposite each other on both sides of the load-lifting device (34a;

    84a), and whereinthe guide tracks (20) in those rack levels (16), where the provisioning devices (43, 44) are arranged in, and the guide tracks (20

    ) in at least one of the rack levels (16), where the conveying devices (106a;

    107a) are disposed in, extend continuously along the rack aisle (15) and the load-lifting device (34a;

    84a) as well as the provisioning devices (43, 44, 108;

    110), so that in the respective rack level (16), where the provisioning devices (43, 44) are arranged in, either the provisioning device (43) in the first buffer path section (41a) or the provisioning device (44) in the second buffer path section (42a) can be approached by the conveyor vehicle (3) via the guide tracks (20) for retrieving and storing load (2), and in at least one of the rack levels (16), where the conveying devices (106a;

    107a) are arranged in, either the provisioning device (43;

    44) of the buffer path section (41a;

    42a) or the provisioning device (108;

    110) of the conveying device (106a;

    107a) can be approached by the conveyor vehicle (3) via the guide tracks (20

    ) for retrieving or storing load (2).

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