Transport system

A method of operating a transport system including the steps of:

• providing a monorail;
• providing at least one drive device to move on the monorail along a direction of movement, the at least one drive device including a drive unit with at least one running wheel and at least one electric drive coupled to the at least one running wheel and configured to drive the at least one running wheel, and at least one pressing unit connected to the drive unit, wherein the at least one pressing unit includes at least one loading roller configured to be pressed against the monorail via at least one spring element, and/or a fixing device arranged on the drive unit;
• and
• providing the fixing device including a fixing roller which interacts with the monorail;
• moving maintenance devices across the monorail via the at least one drive device;
• and
• processing substantially vertically extending surfaces via the maintenance device.

A maintenance system comprising:

• at least one maintenance device;
• and
• a transport system including
• a monorail, and
• at least one drive device configured to move on the monorail along a direction of movement, the at least one drive device including
• a drive unit with at least one running wheel,
• at least one electric drive coupled to the at least one running wheel, the at least one electric drive configured to drive the at least one running wheel, and
• at least one pressing unit connected to the drive unit, wherein the at least one pressing unit includes at least one loading roller configured to be pressed against the monorail via at least one spring element, and/or a fixing device arranged on the drive unit;
• and
• the fixing device including a fixing roller which interacts with the monorail;
• and
• wherein the at least one maintenance device is arranged on the at least one drive device of the transport system and is configured to be moved automatically on the monorail.