Patent ID: 8397645

Claim:
Storage and retrieval machine comprising a mast, at least one chassis for supporting the mast, at least one horizontal rail, on which the at least one chassis can be moved back and forth, as well as at least one lift carriage vertically shiftable on the mast, the mast being formed of at least two supports that are spaced from each other in the moving direction of the at least one chassis, wherein each of the at least two supports is arranged centrally with respect to the at least one horizontal rail and the two supports are connected to each other via at least one transversal bar which extends perpendicular to the length of the at least two supports to obtain a mast profile, wherein the attachment of the at least one perpendicular transversal bar to the at least two supports is resistant to bending and rigid via nodes, so that at least part of the horizontal force, which mainly results from an acceleration or deceleration procedure of the storage and retrieval machine, or a vertical force, generally the storage and retrieval machine's own load or the load of the goods to be transported, is transferred from the one support to the second support of the at least two supports.