To eliminate the need for a warehouse, to exchange tires smoothly and to mount and demount and select a placing frame having different shapes and withstand load by installing a shelf, in which the tires for exchange are preserved, to a carport.
In the carport, supports are arranged before and behind and left and right, and a roof is formed at the upper end sections of each support. Pairs of upper-lower mounting horizontal frames 7, 8 are disposed vertically at the upper places of the front supports 1, 1 at a regular interval, and the base end sides of placing frames 11 are mounted detachably on the lower mounting horizontal frames 8 by bolts, etc. The tire storage shelf, in which the lower ends of support oblique levers 10 are journalled to lower shafts 13 at other ends of the placing frames 11, the upper ends of the support oblique levers 10 are set up detachably to the upper mounting horizontal frames 7 and tires 15 can be placed on the placing frames 11 under a horizontal state, is manufactured.
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