Conveyance device

A conveyance device for conveying a non-self-propelled conveyance truck loaded with a conveyance object along a conveyance route including a curved route and allowing a floor continuous with the conveyance truck to be formed on an entire or a part of the conveyance route, the conveyance device comprising:

• a guide rail for guiding the conveyance truck along the conveyance route, the guide rail being constructed along the conveyance route;
• a friction type drive unit that has a friction roller to touch a surface to be driven of the conveyance truck;
• and
• a connecting device for connecting the conveyance trucks on front and rear positions,
• wherein the conveyance truck is configured so that
• a first truck body whose both front and rear end surfaces are arc-shaped projections in plan view is connected to a second truck body whose both front and rear end surfaces are arc-shaped recesses in plan view to be capable of curving at arc centers of one of the arc-shaped projections of the first truck body and one of arc-shaped recesses of the second truck body in a horizontal direction with that one of the arc-shaped projections of the first truck body being opposed to that one of the arc-shaped recesses of the second truck body, upper surfaces of the first truck body and the second truck body are approximately horizontal surfaces, and the first truck body supports the conveyance object, or
• the first truck body one of whose front and rear end surfaces is an arc-shaped projection in plan view and other one of whose front and rear end surfaces is an arc-shaped recess in plan view is connected to the second truck body one of whose front and rear end surfaces is an arc-shaped projection in plan view and other one of whose front and rear end surfaces is an arc-shaped recess in plan view to be capable of curving at arc centers of the arc-shaped recess of the first truck body and the arc-shaped projection of the second truck body in the horizontal direction with the arc-shaped recess of the first truck body being opposed to the arc-shaped projection of the second truck body, the upper surfaces of the first truck body and the second truck body are approximately horizontal surfaces, and the conveyance object is supported by the first truck body or the second truck body, or the first truck body and the second truck body,
• portions of the second truck body or portions of the first truck body and the second truck body radially inside the curved route forming the arc-shaped recesses are composed of mobile bodies that make side surfaces of the first truck body and the second truck body approximately linear on a linear route and touch the side surface of the adjacent truck body to move on the curved route.