公开(公告)号：US20190202666A1

公开(公告)日：2019-07-04

申请号：US16176657

申请日：2018-10-31

Applicant: Kone Corporation

Inventor： Mika JUNTUNEN ,  Mikko PURANEN ,  KIM ANTIN ,  TELMO SANTOS ,  Miguel MACHADO

IPC: B66B7/12 ,  B66B7/06 ,  G01N27/90 ,  G01L5/10

CPC classification number: B66B7/123

Abstract: The invention relates to a method for condition monitoring of a rope of a hoisting apparatus, and to an arrangement for condition monitoring of a rope of a hoisting apparatus, preferably of an elevator for transporting passengers and/or goods. The arrangement for condition monitoring of a rope of a hoisting apparatus according to the present invention, in which rope comprises one or more conductive load bearing member for bearing the load exerted on the rope in longitudinal direction and extending parallel to each other and to the longitudinal direction of the rope, comprises an at least one eddy current testing probe, placed near said rope for generating an alternating magnetic field, said alternating magnetic field causing eddy currents in said rope, and for detecting a secondary magnetic field being generated by said eddy currents in said rope as eddy current detection data, and an on-line monitoring unit receiving and utilizing said eddy current detection data for on-line condition monitoring of said rope.

公开(公告)号：US20230416050A1

公开(公告)日：2023-12-28

申请号：US18462075

申请日：2023-09-06

Applicant: Kone Corporation

Inventor： Petteri VALJUS ,  Aleksi NAREIKKO ,  Telmo SANTOS ,  Miguel MACHADO

IPC: B66B7/12 ,  G01N27/90

CPC classification number: B66B7/123 ,  G01N27/90 ,  B66B7/1223

Abstract: The invention relates to an arrangement for condition monitoring of a rope of a hoisting apparatus. The arrangement for condition monitoring of a rope of a hoisting apparatus according to the present invention comprises one or more eddy current test units placed near said rope for generating a time-varying magnetic field, and for detecting a secondary magnetic field being generated by eddy currents in said rope as eddy current detection data, and an on-line monitoring unit receiving and utilizing said eddy current detection data for on-line condition monitoring of said rope, wherein an at least one eddy current test unit comprises: one or more printed circuit boards placed near said rope and arranged in a perpendicular direction in relation to the plane formed by adjacent load bearing members of said rope and parallel to each other, and arranged in a parallel direction or in a direction turned 20 degrees or less from the parallel direction in relation to the length of said rope, wherein at least one printed circuit board each comprises one or more eddy current inspection probes, each of said one or more eddy current inspection probes comprising two excitation coils and/or sensing coils near said rope.