To damp vibration at traveling time by a combination of vibration control gel and a metallic spring, to travel while holding an article by a SCARA arm, and facilitate control at cargo unloading time since the height of a support plate does not change so much even in a light load and a heavy load.

A lower base 18 and an upper support plate 20 are arranged on a hand 16 of a SCARA arm of an automated guided vehicle, and the mutual members are connected by vibration control gel 22 and a metallic spring 24. The height is changed in the metallic spring 24 and the vibration control gel 22, only one acts in the first place, and both act when a load increases.