PROBLEM TO BE SOLVED: To provide an abnormality diagnosis device and an abnormality diagnosis method for an elevator brake which are highly reliable by suppressing occurrence of a false report of abnormality report.SOLUTION: An abnormality diagnosis device includes: control means 3 for creating a torque command value for controlling an electric motor; surplus torque calculation means 4 for calculating surplus torque from a load in a cage and the torque command value created by the control means; friction force calculation means 5 for calculating a friction force from the surplus torque calculated by the surplus torque calculation means; unbalanced load detection means 6 for detecting an unbalanced load in the cage; and abnormal friction force determination means 7 for determining presence/absence of brake abnormality on the basis of the friction force calculated by the friction force calculation means and the unbalanced load detected by the unbalanced load detection means.SELECTED DRAWING: Figure 1
【課題】異常発報の誤報の発生を抑えて、信頼性の高い昇降機用ブレーキの異常診断装置および異常診断方法を提供する。【解決手段】電動機を制御するためのトルク指令値を作成する制御手段3と、かご内の荷重と制御手段が作成するトルク指令値とから余剰トルクを算出する余剰トルク算出手段4と、余剰トルク算出手段によって算出される余剰トルクから摩擦力を算出する摩擦力算出手段5と、かご内における偏荷重を検出する偏荷重検出手段6と、摩擦力算出手段によって算出される摩擦力と、偏荷重検出手段によって検出される偏荷重とに基づいて、ブレーキの異常の有無を判定する異常摩擦力判定手段7と、を備える。【選択図】図1
ABNORMALITY DIAGNOSIS DEVICE AND ABNORMALITY DIAGNOSIS METHOD OF ELEVATOR BRAKE
昇降機用ブレーキの異常診断装置および異常診断方法
2018-01-25
Patent
Electronic Resource
Japanese
IPC: | B66B Aufzüge , ELEVATORS |
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