The invention relates to a method and an arrangement for monitoring the safety of a counterweighted elevator. In the method an elevator car (2) is driven with a hoisting machine (3) towards the top end of the elevator hoistway (4), contact between the counterweight (5) and the end buffer (6) of the elevator hoistway is determined, a reference point (R1) for the location of the elevator car (2) is registered when detecting contact between the counterweight (5) and the end buffer (6), the distance (Delta s) that the elevator car travels onwards from the aforementioned reference point (R1) for the location is measured, and if the distance (Delta s) traveled by the elevator car (2) onwards from the aforementioned reference point (R1) exceeds a threshold value (K), a signal indicating a risk of slackening of the traction rope (1) is formed.
Method and arrangement for monitoring the safety of a counterweighted elevator
04.11.2015
Patent
Elektronische Ressource
Englisch
IPC: | B66B Aufzüge , ELEVATORS |
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