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Steel cable monitoring device and steel cable monitoring method

A monitoring device and steel cable technology, applied in the directions of safety devices, transportation and packaging, load hanging components, etc., can solve the problems of large labor force and time, and achieve the effect of correct state monitoring

Active Publication Date: 2021-03-19
HITACHI IND EQUIP SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, it takes a lot of labor and time to inspect the steel cable without exception over its entire length

Method used

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  • Steel cable monitoring device and steel cable monitoring method
  • Steel cable monitoring device and steel cable monitoring method
  • Steel cable monitoring device and steel cable monitoring method

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Experimental program
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Embodiment Construction

[0030] (principle of invention)

[0031] Before describing the embodiments of the present invention, the basic principle of the present invention (principle of the invention) will be described.

[0032] First of all, a crane is a mechanical device for the purpose of suspending heavy objects by power and transporting (moving) them horizontally. Therefore, a crane generally includes: a traction device for moving (transporting) the hoisting weight in the vertical direction (direction of gravity) by winding up and down the steel cable; and a horizontal movement device for moving the hoisting weight in the horizontal direction. . Here, the movement in the horizontal direction is a general term for the movement in the horizontal direction of the wire rope or the hoist. The device for horizontal movement includes a device that performs traverse and travel in bridge cranes or the like, or a device that performs rotation in slewing cranes.

[0033] Since the wire rope is damaged (ab...

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PUM

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Abstract

The present invention provides a steel cable surveillance device and steel cable monitoring method that can perform the correct life forecast of steel cables.The number of bending times is set to divide the steel cables into multiple unit length cables, and measured the number of bending times of the unit length steel cable in the position of the load of the load caused by the bending of the steel cable when the rolling roll drop.There is also a measurement department of the number of swinging times to measure the number of swinging steel cables that are located in a load that is moved by the level of the device to move by the traction device.Then, the number of bending times of the measured steel cables and the number of swinging times monitor the status of the steel cable (the degree of damage, etc.).

Description

technical field [0001] The present invention relates to a wire rope monitoring device and a wire rope monitoring method for monitoring the state of a wire rope used in a crane or the like. Background technique [0002] Steel cables used in cranes, etc. are repeatedly subjected to axial tensile load (that is, the magnitude of the load applied to the cable) and the pulleys (sheaves) and drums in the state where the load is applied. Occurrence of bending (that is, bending of each load occurs), resulting in breakage of the single wire. In such a case where the wire rope breaks, even if the wire rope does not break, but the life of the wire rope has reached the end of its life, it will become a cause of a serious accident. [0003] Therefore, in order to ensure the safety of the working environment, the wire rope is regularly inspected, and when it is judged that the usage limit has been reached due to a certain number of times of bending, the wire rope is replaced. Conditions ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C15/00
CPCB66C15/00
Inventor 及川裕吾
Owner HITACHI IND EQUIP SYST CO LTD
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