Abstract: Provided is surface treatment system for a large object having high versatility. In a surface treatment system for a large object configured to cause a treatment machine for treating a surface of the object to be held by a leading end portion of a work arm of a work robot and to move the treatment machine relative to the surface of the object by a movement of the work robot thus treating the surface of the object by the treatment machine, there is provided a trackless type work machine mounting the work robot on a self-propelled cart. The work machine mounts a robot moving device for moving the work robot relative to the self-propelled cart at least in a height direction and mounts also a battery capable of supplying traveling power for the self-propelled cart.

Abstract: Provided is a system controlling method that improves versatility of a surface treatment system. In the treatment system, for treating a surface of an object by a treatment machine while moving the treatment machine relative to the surface of the object by an action of a work robot, there is provided a trackless type work machine mounting the work robot on a self-propelled cart; and the work machine mounts a robot moving device for moving the work robot relative to the self-propelled cart at least in a height direction. A work area in which the object and the work machine are present is image-captured by a position determination camera. A control device recognizes relative positional relation between the object and the self-propelled cart based on image-captured data of the position determination camera and controls the self-propelled cart based on the recognized relative positional relation, whereby the work machine is moved to a designated work position near the object.

Abstract: Provided is surface treatment system for a large object having high versatility. In a surface treatment system for a large object configured to cause a treatment machine for treating a surface of the object to be held by a leading end portion of a work arm of a work robot and to move the treatment machine relative to the surface of the object by a movement of the work robot thus treating the surface of the object by the treatment machine, there is provided a trackless type work machine mounting the work robot on a self-propelled cart. The work machine mounts a robot moving device for moving the work robot relative to the self-propelled cart at least in a height direction and mounts also a battery capable of supplying traveling power for the self-propelled cart.