Title:
DISCRIMINATION METHOD OF DETERIORATION STATE OF ROPE AND ELEVATOR USING THE SAME
Document Type and Number:
Japanese Patent JP3896764
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an elevator having a means for grasping a deterioration advancing state of a rope with the lapse of time and determining a rope scrap ping time.
SOLUTION: In this elevator where a car and a counter weight are connected by plural ropes, and the ropes are wound on sheaves to be frictionally driven, optical fibers are mounted in the ropes, a light emitting means is mounted on one end of each rope, a light receiving means is mounted on the other end of each rope, and further a means for detecting and recording the change of the transmittance amount of the light passing through the optical fiber, a means for determining the deterioration and the life of the rope, and a means for informing the scrapping time of the rope and a result of the detection to a manager of the elevator, are installed. As the deterioration advancing state of the rope can be continuously grasped on-line, the time to replace or scarp the rope can be quickly determined, which improves the safety and the reliability on the elevator. Further by automatically recording and informing the deterioration advancing state of the rope, the labor for maintenance can be saved.
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Inventors:
Kensuke Kato
Hiroshi Nagase
Nakamura Ichiro
Yuji Yoshitomi
Endo Yoshishige
Hiroshi Nagase
Nakamura Ichiro
Yuji Yoshitomi
Endo Yoshishige
Application Number:
JP2000128947A
Publication Date:
March 22, 2007
Filing Date:
April 25, 2000
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
B66B5/02; G01N27/00; B66B7/12; D07B1/14; D07B1/16; G01M11/00; (IPC1-7): B66B5/02; B66B7/12; D07B1/14; D07B1/16; G01M11/00; G01N27/00
Domestic Patent References:
| JP2047505A | ||||
| JP3140654A | ||||
| JP62123368A | ||||
| JP63012586A | ||||
| JP57170370A | ||||
| JP10011677A |
Attorney, Agent or Firm:
Manabu Inoue