| 摘要 |
A rack is provided with shelves that are well-secured. The corners of each shelf are connected by a hook on one member dropped vertically down into a slot of the other member, and, once the members are properly aligned with the hook and slot, they are secured with a bolt. Beams, such as roller beams, guide beams, and support beams are connected to the frame members by means of upwardly-projecting trees on the frame members, which include arms that fit into holes in the vertical legs of the beams. Clips may be used after the beams are installed on the frame members to prevent the vertical legs of the beams from shifting, thereby further securing the beams to the shelf.
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