| 摘要 |
<p>The method involves detecting a phase of rotation of gear wheels (12, 14, 16) by using stationary sensors (28, 30, 32) while the movement of gears (18, 20, 22) of the respective gear wheels is detected in the respective sensor. A phase offset of the rotation of the gear wheels is evaluated in order to monitor the torsional strength of a shaft (10) that acts as a drive of an escalator. An alert is sent if the temporal change of the phase offset exceeds a given threshold value. An independent claim is also included for a system for monitoring torsional strength of a shaft.</p> |
