TRAVELING BODY

A traveling body includes: a base portion; a wheel unit including a first wheel serving as a driving wheel, the first wheel being supported movably by the base portion; a second wheel spaced apart from the first wheel in a front-rear direction, and serving as a driven wheel that is driven to rotate as the first wheel rotates; a suspension mechanism that generates an urging force; and a link mechanism that is connected to the suspension mechanism and the wheel unit, and subjected to the urging force from the suspension mechanism to press the first wheel toward a lower surface. The suspension mechanism and the link mechanism are disposed between the first wheel and the second wheel in the front-rear direction.