Printer apparatus for creating a concrete support structure for a passenger transport system

A printer device for creating a concrete supporting structure of a passenger transport system configured as an escalator or moving walkway in an existing building, the printer device comprising:

• a printer guide device which can be arranged between two support points of the building provided for supporting the passenger transport system, wherein the printer guide device is designed to be supported on floors of the building at least during a printing process, which floors shall be connected by the passenger transport system, and
• a 3D concrete printer device which is movably guided along the printer guide device and is configured to spatially arrange workable concrete, the 3D concrete printer device including at least one printer nozzle and at least one movement device for moving the printer nozzle;
• wherein the printer guide device has at least one guideway, the guide path of which can be adjusted, at least in the vertical direction, with respect to its spatial position of use, wherein the printer guide device has a support structure on which the at least one guideway is arranged or formed and the guideway is adjusted by adjusting the support structure, wherein the support structure comprises at least two serially connected sections, the central longitudinal axes of which can be set at an angle to one another.