Combined type shelf

A combined type shelf, comprising:

• at least two parallel-rod side frames, each of the parallel-rod side frames including two vertical bar assemblies and a plurality of horizontal bars, each of the plurality of horizontal bars being disposed within corresponding one of the two vertical bar assemblies, wherein each of the two vertical bar assemblies includes a first vertical bar and a second vertical bar parallel to the first vertical bar in a side-by-side manner, each of the plurality of horizontal bars has two opposite ends, and each of the two opposite ends is fixed between the first vertical bar and the second vertical bar of the corresponding one of the two vertical bar assemblies;
• a plurality of inter-frame connectors, each of the plurality of inter-frame connectors including a connector body, two lateral plates, a hole and at least one lower interference part, wherein the connector body has two opposite sides extending outward to form the two lateral plates, the hole is disposed at the connector body, each of the at least one lower interference part is disposed at corresponding one of the two lateral plates, and each of the plurality of horizontal bars penetrates the corresponding hole, such that the connector body and each of the two lateral plates surround the first vertical bar and the second vertical bar;
• a plurality of storage layers, disposed between two of the at least two parallel-rod side frames;
• and
• a plurality of horizontal constraint frames, each of the plurality of storage layers being furnished with at least one of the plurality of horizontal constraint frames, each of the plurality of horizontal constraint frames including a horizontal stop member and two constraint-frame coupling members, each of the two constraint-frame coupling members being connected with one corresponding end of the horizontal stop member, each of the two constraint-frame coupling members including at least one upper interference part, each of the at least one upper interference part being buckled with the at least one lower interference part, such that each of the plurality of horizontal constraint frames is connected with corresponding one of the plurality of inter-frame connectors.