Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Wire rope flaw detector

A flaw detection device, wire rope technology, used in transportation and packaging, material magnetic variables, electromagnets, etc.

Inactive Publication Date: 2009-12-09
MITSUBISHI ELECTRIC CORP
View PDF1 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the magnetic flux generated from the permanent magnet 500 cannot efficiently flow into the wire rope 1.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wire rope flaw detector
  • Wire rope flaw detector
  • Wire rope flaw detector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

figure 1 It is a perspective view showing the wire rope flaw detection device according to Embodiment 1 of the present invention. exist figure 1 Among them, the wire rope flaw detection device 2 has a guide plate 6 having a substantially U-shaped guide groove 6a through which the wire rope 1 moves (direction A in the drawing). The wire rope flaw detection device 2 includes a magnetizer that forms a main magnetic circuit in a predetermined section in the axial direction of the wire rope 1 , and a leakage flux detector that detects a leakage flux generated by a damaged portion of the wire rope 1 .

[0012] figure 2 to represent figure 1 A perspective view of the state of the wire rope flaw detection device with the guide plate removed. The magnetizer of the steel wire rope flaw detection device 2 is used to form the main magnetic circuit in the axially specified section of the steel wire rope 1, and has a rear yoke 3 and a pair of permanent magnets 4a and 4b for excitatio...

Embodiment approach 2

Figure 24 It is a perspective view showing a permanent magnet for a field according to Embodiment 2 of the present invention, Figure 25 For cutting with a plane perpendicular to the axial direction of the wire rope Figure 24 Cross-sectional view of a permanent magnet for excitation. In the structure of the permanent magnet for field excitation according to Embodiment 2, the magnetic pole piece 5 is bonded to a block-shaped permanent magnet 60 with a length of 15 mm, a width of 15 mm, and a height of 15 mm. The cross-section of the sheet 5 cut along a plane perpendicular to the axial direction of the wire rope has a substantially U-shape. On the block-shaped permanent magnet 60, plate-shaped auxiliary permanent magnets 16a, 16b of length 15 mm, width 2.5 mm, and height 10 mm are arranged on the side surfaces of the U-shaped cross-section pole piece 5 so that the polarities face each other. Such as Figure 25 As shown, the orientation directions of the magnetic poles of th...

Embodiment approach 3

Figure 28 and Figure 29 It is a perspective view showing a state in which a guide plate is removed of the wire rope flaw detection device according to Embodiment 3 of the present invention. Figure 30 It is a cross-sectional view of the permanent magnet for excitation of the wire rope flaw detection device according to Embodiment 3 of the present invention.

[0040] The steel wire rope flaw detection device of Embodiment 3, by combining Figure 28 as shown in the 1st device and Figure 29 The second device as shown is formed; the first device includes the rear yoke 3, the first field permanent magnets 4a and 4b having arc shapes in the cross-section cut by a plane perpendicular to the axial direction of the steel wire rope, and Detection coil 8 and guide plate 6 on the base 12; the second device includes a rear yoke 3, a second excitation permanent magnet 4c with an arc shape in a cross-section cut on a plane perpendicular to the axial direction of the wire rope And 4d, g...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
The average particle sizeaaaaaaaaaa
Login to View More

Abstract

A wire rope flaw detector comprises a magnetizer having a pair of excitation magnets (4a, 4b) arranged on a back yoke (3) by reversing the polarities and forming a main magnetic path in a predetermined section of a wire rope (1) in the axial direction, and a detection coil (8) arranged in the predetermined section in the axial direction and detecting leakage flux generated from a damaged part (10) of the wire rope. The excitation magnets (4a, 4b) have such a shape as the cross-section intersecting the wire rope (1) perpendicularly surrounds the wire rope (1), and has orientations of magnetic pole directing toward the wire rope (1) from at least two directions on this cross-section.

Description

technical field [0001] The present invention relates to a wire rope flaw detection device for detecting breakage of a wire rope suspending a car of an elevator or the like and a broken strand of a strand (hereinafter referred to as a damaged portion of a wire rope). Background technique [0002] Conventionally, there is a wire rope flaw detection device that detects a damaged portion of the wire rope by using a detection coil to detect leakage magnetic flux that occurs in a damaged portion such as a strand crack when the wire rope is magnetically saturated (for example, refer to Patent Document 1 ). [0003] Patent Document 1: Japanese Patent Laying-Open No. 9-210968 (paragraph [0003], Figure 8 Wait) [0004] The above-mentioned conventional wire rope flaw detectors exhibit sufficient detection performance for damages generated near the surface of the wire rope, but have a problem of missing detection of damages generated inside the wire rope. For example, in the method o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N27/83
CPCG01N27/83B66B7/123B66B5/125H01F7/06H01F2007/062
Inventor 古泽公康石见泰造吉冈孝笹井浩之
Owner MITSUBISHI ELECTRIC CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com