Systems, methods and apparatuses for testing, calibrating and certifying overspeed devices

摘要

The present disclosure describes apparatuses, methods and systems for determining the speed at which an elevator or hoist overspeed device is activated, and for calibrating and certifying overspeed devices. A testing apparatus may comprise a test pinion which engages with the brake pinion of an overspeed; a test shaft coupled to the test pinion; a motor for rotating the test shaft; a controller for operating the motor; and a mounting bracket for holding the overspeed device in place. A recording apparatus may comprise a detector configured to detect when the rotation of the test pinion has caused the centrifugal weight of the overspeed to be displaced, and to determine the speed of the motor at that time; a memory for storing information relating to the motor; and a processor configured to perform calculations relating to the operation and speed of the motor.

主权项

1. A system for determining the speed at which an overspeed device is activated, the overspeed device having at least a brake pinion and a centrifugal weight, the system comprising:
a testing apparatus comprising: a test pinion configured to engage with the brake pinion; a test shaft coupled to the test pinion such that the test pinion rotates when the test shaft is rotated; a motor coupled to the test shaft to rotate the test shaft; a motor controller coupled to the motor, wherein said motor controller controls the operation and speed of the motor; and a mounting bracket configured to hold the overspeed device for the test pinion to engage the brake pinion; and a recording apparatus comprising: a detector configured to detect when the centrifugal weight has been displaced and to determine the speed of the motor at the time the centrifugal weight is displaced.