METHOD FOR MONITORING DAMAGE TO WIRE ROPE FOR ELEVATOR AND DEVICE FOR MONITORING DAMAGE TO WIRE ROPE FOR ELEVATOR

摘要

A device and a method for monitoring damage to a wire rope for an elevator effectively contribute to the improvement of the safety of the elevator. Vibration sensors (45, 46) having piezoelectric elements (43) are mounted to a safety bar (33) at an interval in the direction in which the safety bar (33) extends, and the safety bar (33) is disposed so as to extend in the direction in which wire ropes (7) are arranged side by side. Damage to a wire rope (7) is detected by detecting, using the vibration sensors (45, 46), an elastic wave generated by the contact between the safety bar (33) and a broken wire (41) of the wire rope (7).