Power Assistant System for Heavy Worker

This study presents the power assistance system of working suit type for heavy worker in construction site of steel bridge and high building. The heavy worker carrying several tools such as hammer, grinder, window frame and window glass should be stayed to do handling work in closed working space or inside internal wall of large complex block and in long time. The power suit system is realized by developing the mechanism and control technology to reduce the working load to be transferred to wrist, arm and shoulder of heavy worker. It is developed to realize the human friendly optimal working motion. This study shows the link design of multi-axis mechanism to do handling work of a variety of motion. It shows the control technology of handling work system to reduce the effect of the weight of handling tool and wearable suit system and the working load of handling process such as the reaction force of tools.