To provide a detection device for detecting damage to a rope based on a leakage magnetic flux of a magnetized rope while reducing false detection caused by spike noise.SOLUTION: A detection device 1 for detecting damage to a rope includes: a magnetizer 110 for magnetizing a rope to be detected as to the presence or absence of a damage; a sensor 120 for detecting a leakage magnetic flux of the rope magnetized by the magnetizer and outputting a detection signal S1 according to the detection result; a filter 120 for removing a frequency component higher than a predetermined frequency from the detection signal; and a determination unit 220 for determining the presence or absence of a damage to the rope according to the number of times the output signal of the filter crosses a predetermined threshold within a predetermined time.SELECTED DRAWING: Figure 5
【課題】本発明は、スパイクノイズに起因する誤検出を低減しつつ、磁化させたロープの漏洩磁束に基づいてロープの損傷を検出する検知装置を提供する。【解決手段】本発明のロープの損傷を検知する検知装置1は、損傷の有無の検出対象となるロープを磁化させる磁化器110と、前記磁化器により磁化させたロープの漏洩磁束を検出し、検出結果に応じた検出信号S1を出力するセンサー120と、前記検出信号から、所定の周波数より高い周波数成分を除去するフィルター120と、前記フィルターの出力信号が、予め定められた閾値を所定時間内に交差した回数に応じて前記ロープの損傷の有無を判定する判定部220と、を具える。【選択図】図5
ROPE STRAND BREAKAGE DETECTION DEVICE
ロープの素線切れ検知装置
01.04.2025
Patent
Elektronische Ressource
Japanisch
Elevator steel wire rope strand breakage detection device
Europäisches Patentamt | 2020
|Comprehensive detection device for abrasion and strand breakage of steel wire rope
Europäisches Patentamt | 2025
|Europäisches Patentamt | 2024
|