Fall-arrest device test systems and methods
OwnerCarlos Leguainventor
Life of this patent
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Abstract
A fall-arrest device test system for testing a fall-arrest device configured to be mounted around a wire rope of an elevator. The test system further comprises a loading lever having a first end arranged to rotate around a pivot between a first operational position and a second operational position, and the loading lever being operatively coupled to the wire rope, such that when the loading lever is at the first operational position the lever stretches the wire rope and when the loading lever is at the second operational position the loading lever does not stretch the wire rope. Methods for testing such a fall-arrest device are also disclosed.
Claims15
1-15 (canceled)
A fall-arrest device test system for testing a fall-arrest device configured to be mounted around a wire rope of an elevator, the fall-arrest device comprising:
- a clamping mechanism and an overspeed detector, the overspeed detector comprising a driven roller arranged to be driven by a wire rope and wherein the clamping mechanism is configured to clamp the wire rope if the overspeed detector detects a speed of the driven roller above a predetermined threshold,
- the test system comprising:
- a loading lever having a first end arranged to rotate around a pivot between a first operational position and a second operational position, and the loading lever being operatively coupled to the wire rope, such that when the loading lever is at the first operational position the lever stretches the wire rope and when the loading lever is at the second operational position the loading lever does not stretch the wire rope.
A method for testing a fall-arrest device, wherein the fall-arrest device comprises:
- a clamping mechanism and an overspeed detector, the overspeed detector comprising a driven roller arranged to be driven by a wire rope and wherein the clamping mechanism is configured to clamp the wire rope if the overspeed detector detects a speed of the driven roller above a predetermined threshold,
- the method comprising:
- providing an elevator cabin operated by a traction mechanism;
- providing a loading lever having a first end arranged to rotate around a pivot between a first operational position and a second operational position, the loading lever being operatively coupled to the wire rope, such that when the loading lever is at the first operational position the lever stretches the wire rope and when the loading lever is at the second operational position the loading lever does not stretch the wire rope;
- pivotally rotating the loading lever to the first operational position to stretch the wire rope;
- stretching the wire rope by pulling the wire rope in a first direction;
- displacing the elevator cabin using the traction system in the first direction such that the wire rope is displaced in a second direction opposite to a first direction relative to the elevator cabin, and
- substantially simultaneously releasing the wire rope and thereby displacing the wire rope in the second direction.
Dependencies are inferred from the claim text.