Method for monitoring operating states of an elevator unit by sensing movable brake part
AssigneeInventio AG
InventorsKarl Erny, Urs Lindegger, Rudolf Eckenstein
Life of this patent
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Abstract
A method for monitoring the operating state of an elevator drive having a brake includes the mounting of a sensor on a movable brake part. The sensor generates an output proportional to the extent of relative movement between the brake part upon which it is mounted and a fixed brake part. The sensor output is monitored to provide an indication of the operating state of the drive and may be combined with other data to provide indications of a variety of drive states.
Claims7
A method for the detection and indication of different operating states of an elevator car drive with a brake device, comprising the steps of:
- mounting at least one sensor on a brake-magnet tappet of a movable brake-magnet part;
- generating a sensor output proportional to an extent of relative movement of the brake-magnet tappet relative to a fixed brake magnet part;
- and
- monitoring the sensor output.
A method for the detection and indication of different operating states of an elevator car drive with a brake device comprising:
- providing a sensor generating an output proportional to an extent of a relative movement of a brake magnet;
- and
- providing a visual indication, based upon the sensor output, of at least one of a normal operating state, visualized by means of a second indicator;
- an operating state corresponding to excessively worn brake linings, visualized by means of a third indicator;
- an operating state corresponding to a stroke of the brake magnet, visualized by means of a fourth indicator;
- an operating state corresponding to a heating of a brake drum, visualized by means of a fifth indicator;
- and
- an operating state corresponding to a failure detected by electronic tests of a monitor, visualized by means of a sixth indicator.
Dependencies are inferred from the claim text.