SAFETY DEVICE, ELEVATOR SYSTEM AND CONTROL METHOD FOR CONTROLLING THE ELEVATOR SYSTEM
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United States of America Patent
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Issued Date -
Mar 1, 2018
app pub date -
Aug 23, 2017
filing date -
Aug 24, 2016
priority date (Note) -
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Abstract
The present invention provides a safety device installed on a car frame of an elevator, and comprising a housing, an elastic element for providing a clamping force, and an engagement member adjacent to two sides of a guide rail, wherein the engagement member is provided with a sensor for measuring a spacing between the engagement member and a guiding face of the guide rail. The present invention further provides an elevator system provided with the above-described safety device and a control method for controlling the elevator system. The safety device according to the invention is able to accurately measure the distance between engagement parts and a guiding face of the guide rail in real time.
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