Overhead line system

An overhead line system, comprising:

• a first moving device that is movable in the air between a first support post and a second support post;
• a first lifting device that is disposed in proximity to the first support post and is configured to wind up an overhead line;
• a second lifting device that is disposed in proximity to the second support post and is configured to wind up the overhead line;
• a first overhead line stretched from the first moving device and connected to the first lifting device via the first support post;
• a second overhead line stretched from the first moving device and connected to the second lifting device via the second support post;
• a second moving device that is movable in the air between a third support post and a fourth support post;
• a third lifting device that is disposed in proximity to the third support post and is configured to wind up the overhead line;
• a fourth lifting device that is disposed in proximity to the fourth support post and is configured to wind up the overhead line;
• a third overhead line stretched from the second moving device and connected to the third lifting device via the third support post;
• a fourth overhead line stretched from the second moving device and connected to the fourth lifting device via the fourth support post;
• and
• a suspension device that is connected to the first moving device and the second moving device and that is movable in the air.