To make it possible that materials and equipment are carried even in a narrow space without depending on manpower.

A flat car is equipped with a power shovel 50 while keeping coupling possible, and the flat car supports a vessel main body 20 free of rotation and moving between a loading position that can accommodate/hold a work which is mounted on the flat car and a tilting position where an accommodated work can be released forward with its self-weight while rotation and moving are possible, and the vessel main body is rotated and moved by a driving measure 30 between the loading position and the tilting position. A front wall surface of vessel main body may as well be composed in arrow-shapes.