Measuring system and method for measuring the elasticity of an overhead line of a track

A measuring system for measuring elasticity of an overhead line of a track, the measuring system comprising:

• a non-contacting sensor for detecting a position of a measuring point of the overhead line;
• an evaluation device for calculating the elasticity of the overhead line;
• a mechanical excitation device for setting the overhead line into vibration through active excitation;
• said mechanical excitation device including an actuating drive, a base unit and a triggering unit, said triggering unit being adjustable relative to said base unit by said actuating drive;
• said mechanical excitation device including a triggering drive, and said triggering unit including a line receiving device and a holding element being adjustable relative to said line receiving device by said triggering drive;
• said non-contacting sensor configured to detect a vibration progression;
• and
• said evaluation device configured to derive mechanical properties of the overhead line from the vibration progression.