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Rope checking method

An inspection method and rope technology, applied to electromagnetic measuring devices, elevators, instruments, etc., can solve the problems of wire rope detector damage, long inspection time, and reduced wire rope speed

Active Publication Date: 2009-04-15
MITSUBISHI ELECTRIC BUILDING SOLUTIONS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the existing wire rope damage detector is set so that the wire rope passes the guide wall in a sliding contact state, and therefore, for example, in the case where the wires constituting the wire rope are broken and protrude from the outer peripheral surface, or the dirt adhering to the wire rope is fixed and released from the wire rope. When the outer peripheral surface of the cylinder protrudes, when the protruding part reaches the position where the guide part is arranged, it collides with the guide part with a strong momentum.
Therefore, in the worst case, there will be a problem that the existing wire rope damage detector is broken
In addition, in order to avoid the breakage of the existing wire rope damage detector, when the speed of the wire rope is reduced as much as possible to perform the inspection of the wire rope, especially in elevators installed in high-rise buildings, etc., the wire rope is very long, so there is a problem. Problems with long check times

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0027] figure 1 It is a schematic diagram of an elevator having a wire rope inspected by the rope inspection method according to Embodiment 1 of the present invention; FIG. 2 is a side view of a protruding abnormality detection device used in the preliminary inspection of the rope inspection method according to Embodiment 1 of the present invention ; Fig. 3 is a front view of A direction in Fig. 2; Fig. 4 is a cross-sectional view viewed along the IV-IV arrow in Fig. 3; The side view of the protruding abnormality detection device in the detection process of the protruding abnormality of the wire rope, Fig. 5(a) to Fig. 5(c) show the action of the detection piece when the protruding part of the wire rope passes through the installation position of the detection piece. Image 6 It is an external view of a rope tester used in the main inspection of the rope inspection method according to Embodiment 1 of the present invention; Figure 7 is along Image 6 The cross-sectional view...

Embodiment approach 2

[0101] Figure 12 It is a plan view of the protruding abnormality detection device used in the preliminary inspection of the rope inspection method according to Embodiment 2 of the present invention.

[0102] In addition, in Figure 12 In , the same reference numerals are assigned to the same or similar parts as those in Embodiment 1, and descriptions thereof will be omitted.

[0103] exist Figure 12In the detection piece 16B of the protruding abnormality detection device 15B, on one side of the detection piece 16B on both sides of the formation part of the detection groove 17a, a wire receiving groove 45 is formed in which the groove direction is consistent with the axial direction of the installation common shaft 11a. . In addition, the detection piece 16B is supported by the attachment common shaft 11a using the attachment member 21 like Embodiment 1 mentioned above.

[0104] At this time, the wire accommodating groove 45 is formed in such a position that when the dete...

Embodiment approach 3

[0112] Figure 13 It is a plan view of the protruding abnormality detection device used in the preliminary inspection of the rope inspection method according to Embodiment 3 of the present invention.

[0113] exist Figure 13 Among them, the protruding abnormality detecting device 15C is constituted by a pair of protruding abnormality detecting device units 50A and 50B.

[0114] Respectively on the detection pieces 16C, 16D of each protruding abnormality detection device monomer 50A, 50B, on each other end side of the detection pieces 16C, 16D, in the length direction of the long sides of the detection pieces 16C, 16D in the direction of the wire rope 6 Four semicircular detection grooves 17 b are formed at uniform intervals. At this time, each detection groove 17b is shaped so as to accommodate half of the outer peripheral surface of the wire rope 6 with a predetermined gap.

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Abstract

The objective of the present invention is to provide a rope inspection method, which can not only avoid the damage of the rope tester in the first place, but also can check the elevator wire rope in a short period. A rope inspection method for detecting the exception of an elevator wire rope (6) traveling in linkage with the rotation for driving a rope pulley, a rope tester monomer (26) has a pair of opposite polarity magnets (28a, 28b) mutually depart from a scheduled distance; and a flat coil (31) for detecting the variation of magnetic flux produced between the pair of magnets (28a, 28b), wherein, the rope tester monomer (26) is set that the flat coil (31 ) can detect the variation of magnetic flux produced by the fracture of the wire of the traveling wire rope (6), before performing a main check-up for detecting whether the wire of the traveling wire rope (6) has fractures based on the output of the flat coil (31 ), a preparatory check-up for detecting whether the wire rope (6) has projecting positions is performed firstly.

Description

technical field [0001] The invention relates to a rope inspection method suitable for inspection of steel wire ropes for elevators. Background technique [0002] When inspecting steel wire ropes for elevators, conventional wire rope damage detectors have been proposed as means for detecting not only external surface damage but also internal damage. [0003] Moreover, the existing wire rope damage detector has: a magnetizer constituted by arranging a pair of permanent magnets whose magnetic poles are reversed at a predetermined distance apart from both ends of a ferromagnetic plate; On the pillars and guides on both sides, a guide wall is formed at the front end bridging the upper end of the pillar; and a detector coil is arranged on the inner surface of the guide wall (for example, refer to Patent Document 1). [0004] When inspecting the wire rope using the conventional wire rope damage detector, the conventional wire rope damage detector is disposed so that the wire rope ...

Claims

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Application Information

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IPC IPC(8): G01N27/82B66B7/12B66B5/00
CPCB66B7/123G01B7/34G01N27/83G01N27/87G01R31/1272
Inventor 飞田晃明石正雄
Owner MITSUBISHI ELECTRIC BUILDING SOLUTIONS CORP
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