Belt drive and method for monitoring such a belt drive

A method for monitoring a belt drive, comprising:

• providing a first marking comprising a monitoring device on a rotatably mounted disc, the first marking being offset from the center of the disc;
• providing a second marking on a belt which is deflected at the disc;
• wherein the first marking and the second marking are positioned on the disc and the belt, respectively, such that during circulation of the belt around the disc, the first marking and the second marking reach a trigger position in which the first marking and the second marking are in line with a center of the disc, wherein a rotational axis of the disc runs through the center of the disc;
• a) recording, by the monitoring device, when the trigger position is reached, wherein the monitoring device emits a signal when the markings are located in the trigger position;
• b) recording a number of signals emitted by the monitoring device over a certain past time period;
• and
• c) determining loads to which the belt or the disc have been subjected to during the past time period based on the number of signals emitted by the monitoring device corresponding to a number of circulations of the belt, and taking into consideration relevant influencing variables.