To provide an assembling structure capable of stably keeping an attitude of assembling time of standing columns and increasing rigidity of the assembling time, while providing a simple constitution of a folding type stocker allowing inclination of the columns in relation to a bottom frame.SOLUTION: Locking protrusions 50 for locking hooks 115 of handrails 110 of a scaffold are provided to columns 20 of a folding type stocker 1, and locking annular parts 60 for inserting wedge parts 130 of the handrails of the scaffold are provided. A pair of columns changed to a standing state from a bottom frame from an inclined state in relation to the bottom frame 10 are connected with the handrail of the scaffold present in a construction site.SELECTED DRAWING: Figure 6

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