Storage rack with recessed square tubes

Abstract

The invention relates to a storage rack with a concave square tube comprising a pile-like structure, storage trays, and rack plates. The pile-like structure comprises a concave square tube and at least one assembly of inclined holes. The concave square tube comprises a first plate, a second plate, a third plate, and at least one concave plate. At least one concave plate is fitted with at least one assembly of inclined holes. The assembly of inclined holes comprises a first assembly of inclined holes and a second assembly of inclined holes. The first assembly of inclined holes and the second assembly of inclined holes are arranged side-by-side through their respective concave plates. The first assembly of inclined holes and the second assembly of inclined holes are respectively fitted with two inclined holes along the assembly direction. The storage tray comprises a rack frame and locking devices.

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