Diagnosis operation device and method of elevator

Abstract

The invention relates to diagnosis operation device and method of an elevator. A threshold value for judging abnormity in diagnosis operation can be properly set according to the specification and the like of the elevator, and the abnormity detection precision in diagnosis operation can be greatly improved. The diagnosis operation is carried out after control operation in an earthquake is implemented, i.e. a lift car (9) of the elevator travels, the torque current of a gear-driven hoisting machine is simultaneously measured, a measured value and a preset reference mode are compared, and abnormity is judged when a difference value exceeds the threshold value, wherein preset elevator information including the gear ratio of a gear (14) of the hoisting machine and the diameter of a driving rope pulley (12) is stored in an elevator information storage part (4) before the earthquake occurs. In the preset period after the earthquake occurs, the preset status information of the elevator is detected so as to obtain the elevator information changing along with environments and the like. According to the elevator information and the status information, the threshold value of the torque current for the hoisting machine is determined before the diagnosis operation starts.

Description

Technical field [0001] The present invention relates to a diagnostic operation device and a diagnostic operation method for an elevator that performs a diagnostic operation in order to restart the elevator after the controlled operation during an earthquake. Background technique [0002] In an elevator equipped with an earthquake detector, when the shaking of an earthquake is detected, a controlled operation during an earthquake called to stop at the nearest floor to rescue passengers is performed according to the scale of the earthquake (the magnitude of the acceleration of the building, etc.). In addition, depending on the scale of the earthquake, some of the following abnormalities may occur in the elevator hoistway: the car and counterweight are separated from the guide rail, the joint of the guide rail is deformed, or the ropes and cables are hooked in the hoistway On the protrusions. Therefore, in the past, when some abnormality of the elevator may occur due to the shaking...

AI Technical Summary

Problems solved by technology

[0009] As in the past, when the threshold value for judging abnormality during diagnostic operation is set relatively large, the accuracy of detecting abnormality deteriorates, and even if an abnormality is detected, the detection lags, and there is a problem that the elevator is greatly damaged.

[0010] In addition, the diagnostic operation described in Patent Document 1 simply compares the measured value of the sound with a predetermined three-level reference level to determine whether there is an abnormality. According to this description, no specific solution to the above-mentioned problem can be derived.

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