JPS566103A - Method and instrument for contactless type reference measurement of rail shape - Google Patents
Method and instrument for contactless type reference measurement of rail shapeInfo
- Publication number
- JPS566103A JPS566103A JP8074879A JP8074879A JPS566103A JP S566103 A JPS566103 A JP S566103A JP 8074879 A JP8074879 A JP 8074879A JP 8074879 A JP8074879 A JP 8074879A JP S566103 A JPS566103 A JP S566103A
- Authority
- JP
- Japan
- Prior art keywords
- rail
- detectors
- eddy current
- top surface
- detect
- 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
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
PURPOSE: To make it possible to take measurements of unchangeable points in process of continuous run, by using an eddy current detector, whose impedance varies with an eddy current, to acquire the eddy current flowing through a rail.
CONSTITUTION: To balance beam 5 fitted to axis box 3 of wheel 2 running on rail top surface 1-1, detection arm 6 is fixed for fitting detectors 7-1 and 7-2, whose detectors are fed with electricity from signal AC power source 25 through driving amplifiers 15-1 and 15-2 having impedance bridge circuits, thereby making it possible to detect a fixed position on the flank of the rail. Detectors 7-1' and 7-2' detect top surface 1-1' and upper neck part 1-2' of abrasive rail 1' at the same time and the data are input to operator 24 together with the head size of a normal rail stored in memory 20 so as to calculate the difference. Consequently, measurement in process of run becomes possible and dimensional precision in terms of abrasion and polishing degrees can be improved.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8074879A JPS566103A (en) | 1979-06-28 | 1979-06-28 | Method and instrument for contactless type reference measurement of rail shape |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8074879A JPS566103A (en) | 1979-06-28 | 1979-06-28 | Method and instrument for contactless type reference measurement of rail shape |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS566103A true JPS566103A (en) | 1981-01-22 |
Family
ID=13727018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8074879A Pending JPS566103A (en) | 1979-06-28 | 1979-06-28 | Method and instrument for contactless type reference measurement of rail shape |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS566103A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5245855A (en) * | 1991-06-24 | 1993-09-21 | Rittenhouse-Zemen & Associates, Inc. | Rail seat abrasion measurement |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53141653A (en) * | 1977-05-17 | 1978-12-09 | Toyota Motor Co Ltd | Inspecting method of abrasion of conveyer rale and abrasion detector |
-
1979
- 1979-06-28 JP JP8074879A patent/JPS566103A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53141653A (en) * | 1977-05-17 | 1978-12-09 | Toyota Motor Co Ltd | Inspecting method of abrasion of conveyer rale and abrasion detector |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5245855A (en) * | 1991-06-24 | 1993-09-21 | Rittenhouse-Zemen & Associates, Inc. | Rail seat abrasion measurement |
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