PURPOSE: To transport an object to be carried efficiently and stably, and at the same time, store a carrying tool compactly when not used by providing a fitting member by which one of the upper and lower ends of a vertical column can be freely on the other end in the vertical direction.

CONSTITUTION: Right and left, a pair of side frame bodies 30 are arranged on the external sides of vertical columns 1, 2, i.e., in such a manner that the side frame bodies 30 are fitted in while being confronted with the rear surface of a front vertical member 5 and the lower surface of a longitudinal member 6. The rear edge of the side frame body 30 tilts further to the rear as the rear edge becomes higher, and the side frame body 30 is detachable from a frame assembly 25. Also, between the rear parts of both side frame bodies 30, a rear frame body 20 which tilts further to the rear as the height becomes higher, can be arranged. Since the rear frame body tilts further to the rear as the height becomes higher for a carrying tool 49, the storage space can be formed widely, and an article to be carried can be efficiently and stably loaded. Also, members to be fitted 1a, 2a of the vertical columns 1, 2 can be fitted in fitting members 3, 4 on the lower level to stack the carrying tools 49. When it is not used, both side frame bodies are removed, and the carrying tools 49 are stacked by slipping the vertical columns on an upper level slightly forward to the vertical columns 1, 2 on the lower level.