JPS5563756A - Magnetic flaw detector for rope - Google Patents
Magnetic flaw detector for ropeInfo
- Publication number
- JPS5563756A JPS5563756A JP13671978A JP13671978A JPS5563756A JP S5563756 A JPS5563756 A JP S5563756A JP 13671978 A JP13671978 A JP 13671978A JP 13671978 A JP13671978 A JP 13671978A JP S5563756 A JPS5563756 A JP S5563756A
- Authority
- JP
- Japan
- Prior art keywords
- rope
- pole piece
- outer diameter
- magnetic pole
- less
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
PURPOSE: To prevent a rope from laterally fluctuating and improve largely the magnetizing efficiency of the rope by forming the inner diameter of a magnetic pole piece less than three times of the outer diameter of the rope and forming the length of the magnetic pole piece longer than twice the outer diameter of the rope and less than ten times of the outer diameter of the rope.
CONSTITUTION: A rope 1 is energized by a magnetic pole piece 4 through predetermined air gap g'. A magnetic exciter 2 is formed substantially in U shape. A detecting coil 9 detects the leakage magnetic flux produced at the defective portion of the rope 1. After the detected leakage flux is amplified by an amplifier 10, it is recorded on a recorder 11. The inner diameter D of the magnetic pole piece 4 is formed less than three time of the outer diameter d of the rope 1, and the length l of the magnetic pole piece 4 is formed longer than twice the outer diameter d of the rope 1 and less than 10 times thereof.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13671978A JPS5563756A (en) | 1978-11-08 | 1978-11-08 | Magnetic flaw detector for rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13671978A JPS5563756A (en) | 1978-11-08 | 1978-11-08 | Magnetic flaw detector for rope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5563756A true JPS5563756A (en) | 1980-05-14 |
Family
ID=15181885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13671978A Pending JPS5563756A (en) | 1978-11-08 | 1978-11-08 | Magnetic flaw detector for rope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5563756A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4538107A (en) * | 1983-01-10 | 1985-08-27 | Varone Richard B | Cable failure detection system |
| US4864236A (en) * | 1982-08-31 | 1989-09-05 | The United States Of America As Represented By The United States Department Of Energy | Wire inhomogeneity detector having a core with opposing pole pieces and guide pieces adjacent the opposing pole pieces |
| CN104215687A (en) * | 2014-08-28 | 2014-12-17 | 山西科为感控技术有限公司 | Magnetic force line balanced detection sensor employing wire rope |
-
1978
- 1978-11-08 JP JP13671978A patent/JPS5563756A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4864236A (en) * | 1982-08-31 | 1989-09-05 | The United States Of America As Represented By The United States Department Of Energy | Wire inhomogeneity detector having a core with opposing pole pieces and guide pieces adjacent the opposing pole pieces |
| US4538107A (en) * | 1983-01-10 | 1985-08-27 | Varone Richard B | Cable failure detection system |
| CN104215687A (en) * | 2014-08-28 | 2014-12-17 | 山西科为感控技术有限公司 | Magnetic force line balanced detection sensor employing wire rope |
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