JPS5477189A - Bearing trouble inspector - Google Patents
Bearing trouble inspectorInfo
- Publication number
- JPS5477189A JPS5477189A JP14387477A JP14387477A JPS5477189A JP S5477189 A JPS5477189 A JP S5477189A JP 14387477 A JP14387477 A JP 14387477A JP 14387477 A JP14387477 A JP 14387477A JP S5477189 A JPS5477189 A JP S5477189A
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- trouble
- reaches
- operate
- 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
Abstract
PURPOSE: To judge the existence and charactersitics of a trouble, without being influenced by the external vibrations, by converting the ultrasonic waves from a bearing into electric signals with the use of a transducer and by examining the amplitude and shape of the electric signals.
CONSTITUTION: Numeral 1 indicates an electric motor, and the rotor of a ball bearing 2 is supported on an end bracket 3. An ultrasonic transducer 8 uses a piezoelectric element which sensibly responds to the ultrasonic waves of about 50 KHz to 2 MHz. The resultant output is amplified and subjected to impedance conversion by a preamplifier 9. A main amplifier 10 is equipped with an amplifying circuit and a frequency filter. The output is detected by the detecting circuit 111 of a trouble judging circuit 11, and the output voltage is generated, when it reaches a first comparison level, so that a waveform shaping circuit 113 such as a monostable multivibrator is driven to operate a first warning device 121. The low frequency component in the output of the detector 111 is fed through a low-pass filter 114 to a second comparison circuit 115 so that the output is generated, when it reaches the second comparison level, to operate a second warning device 122.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14387477A JPS5477189A (en) | 1977-12-02 | 1977-12-02 | Bearing trouble inspector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14387477A JPS5477189A (en) | 1977-12-02 | 1977-12-02 | Bearing trouble inspector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5477189A true JPS5477189A (en) | 1979-06-20 |
Family
ID=15349002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14387477A Pending JPS5477189A (en) | 1977-12-02 | 1977-12-02 | Bearing trouble inspector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5477189A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62226033A (en) * | 1986-03-28 | 1987-10-05 | Agency Of Ind Science & Technol | Evaluating device for sliding state of mechanical seal |
JPS62197028U (en) * | 1987-06-10 | 1987-12-15 | ||
JPH08122142A (en) * | 1994-10-21 | 1996-05-17 | Omron Corp | Device and method for discrimination |
WO2019044745A1 (en) * | 2017-08-31 | 2019-03-07 | Ntn株式会社 | Method and device for monitoring condition of rolling bearing |
WO2019044744A1 (en) * | 2017-08-31 | 2019-03-07 | Ntn株式会社 | State monitoring method and state monitoring device for rolling bearing |
JP2019045487A (en) * | 2017-08-31 | 2019-03-22 | Ntn株式会社 | State monitoring method and state monitoring device of rolling bearing |
JP2019045495A (en) * | 2017-08-31 | 2019-03-22 | Ntn株式会社 | State monitoring method and state monitoring device of rolling bearing |
-
1977
- 1977-12-02 JP JP14387477A patent/JPS5477189A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62226033A (en) * | 1986-03-28 | 1987-10-05 | Agency Of Ind Science & Technol | Evaluating device for sliding state of mechanical seal |
JPH0460543B2 (en) * | 1986-03-28 | 1992-09-28 | Kogyo Gijutsuin | |
JPS62197028U (en) * | 1987-06-10 | 1987-12-15 | ||
JPS6330983Y2 (en) * | 1987-06-10 | 1988-08-18 | ||
JPH08122142A (en) * | 1994-10-21 | 1996-05-17 | Omron Corp | Device and method for discrimination |
WO2019044745A1 (en) * | 2017-08-31 | 2019-03-07 | Ntn株式会社 | Method and device for monitoring condition of rolling bearing |
WO2019044744A1 (en) * | 2017-08-31 | 2019-03-07 | Ntn株式会社 | State monitoring method and state monitoring device for rolling bearing |
JP2019045487A (en) * | 2017-08-31 | 2019-03-22 | Ntn株式会社 | State monitoring method and state monitoring device of rolling bearing |
JP2019045495A (en) * | 2017-08-31 | 2019-03-22 | Ntn株式会社 | State monitoring method and state monitoring device of rolling bearing |
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