JPS54147450A - Supervisory device for anomaly of rotary shaft - Google Patents
Supervisory device for anomaly of rotary shaftInfo
- Publication number
- JPS54147450A JPS54147450A JP5619078A JP5619078A JPS54147450A JP S54147450 A JPS54147450 A JP S54147450A JP 5619078 A JP5619078 A JP 5619078A JP 5619078 A JP5619078 A JP 5619078A JP S54147450 A JPS54147450 A JP S54147450A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- abnormality
- disc
- rotary shaft
- torsional oscillation
- 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.)
- Granted
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
PURPOSE: To detect an abnormality of the rotary shaft without stopping the shaft by deciding the magnitude of torsional oscillation dampling rate obtained by measuring an unevenness of the rotation.
CONSTITUTION: A gear-shaped disc 5 is provided to the end of rotary shat, an electromagnetic pickup 6 for detecting the rotation pulse is placed beside the disc. The uneven-rotation detecting unit consists of the disc 5, pickup 6 and unevenrotation meter 8. A damping oscillation wave form from the filter 9 which takes only a specific frequency component of the output signal of the meter 8 is computed by the arithmetic unit 10 to obtain the torsional oscillation damping rate. The stored value, which is obtained such that a torsional oscillation damping rate of the normal state of shaft 4 is multiplied by certain constant, and an output of the arithmetic unit 10 are compared with each other by the comparator 11 to decide an abnormality of the shaft 4, an alarm is delivered if the shaft is unusual. By this way, an abnormality of the rotary shaft can be detected as the shaft is turned.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5619078A JPS54147450A (en) | 1978-05-11 | 1978-05-11 | Supervisory device for anomaly of rotary shaft |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5619078A JPS54147450A (en) | 1978-05-11 | 1978-05-11 | Supervisory device for anomaly of rotary shaft |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54147450A true JPS54147450A (en) | 1979-11-17 |
JPS6246817B2 JPS6246817B2 (en) | 1987-10-05 |
Family
ID=13020182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5619078A Granted JPS54147450A (en) | 1978-05-11 | 1978-05-11 | Supervisory device for anomaly of rotary shaft |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54147450A (en) |
-
1978
- 1978-05-11 JP JP5619078A patent/JPS54147450A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6246817B2 (en) | 1987-10-05 |
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