PURPOSE: To facilitate the putting in and out of goods, and also to stably carry out the transportation and storage thereof by connecting a plurality of cart parts so as to be relatively turnable via a connecting member through which a linear arrangement posture and a parallel arrangement posture can be changed over to each other.

CONSTITUTION: Respective cart parts 1, 2 can be brought into a linear arrangement posture by relatively opening them making a center of a turnably connecting part 27 of a connecting member 27, and in this state, since the depth of the shelves can be narrowed, the putting in and out of goods to the shelf boards can be carried out with ordinary feeling. The respective cart parts 1, 2 can be brought into a parallel arrangement posture by relatively closing them, and in this state they can be traveled by pushing or pulling them. At that time, the cart devices 1, 2 with shelf boards 21 can be formed so as to be wide as a whole by the parallel arrangement posture. Further, the opening or closing, and traveling thereof can be carried out with a light pushing or pulling operational force utilzing respective wheels 25, 25A.