Manipulation unit, installation having manipulation units, and method for operating an installation having manipulation units

A manipulation unit for horizontally and/or vertically moving a workpiece, the manipulation unit being movable over a floor, the manipulation unit comprising:

• wheels,
• a support frame having vertical supporting columns, and
• a workpiece receptacle fastened to the support frame, wherein the support frame is open on at least two sides and has a side opening for entry and/or exit of a separate manipulation unit and a bottom opening in the direction of the floor, wherein the workpiece receptacle is configured in the form of a hanger which hangs from an upper face of the support frame into an internal volume of the manipulation unit, and wherein the workpiece receptacle is guided on an exterior surface of at least one of the vertical supporting columns by a guide device for lowering and lifting the workpiece receptacle, the guide device being movable by rolling or sliding along the exterior surface of the at least one of the vertical supporting columns, for lifting or lowering the workpiece receptacle.