JPS56135140A - Abnormality diagnostic device for roller bearing - Google Patents

Abnormality diagnostic device for roller bearing

Info

Publication number
JPS56135140A
JPS56135140A JP3934780A JP3934780A JPS56135140A JP S56135140 A JPS56135140 A JP S56135140A JP 3934780 A JP3934780 A JP 3934780A JP 3934780 A JP3934780 A JP 3934780A JP S56135140 A JPS56135140 A JP S56135140A
Authority
JP
Japan
Prior art keywords
value
bearing
circuit
formula
envelop
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
Application number
JP3934780A
Other languages
Japanese (ja)
Other versions
JPS6157491B2 (en
Inventor
Yoji Miyazaki
Shigeyuki Komatsu
Shinobu Sagisawa
Akira Oshitani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Kawasaki Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd, Kawasaki Steel Corp filed Critical Fuji Electric Co Ltd
Priority to JP3934780A priority Critical patent/JPS56135140A/en
Publication of JPS56135140A publication Critical patent/JPS56135140A/en
Publication of JPS6157491B2 publication Critical patent/JPS6157491B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/04—Bearings
    • G01M13/045—Acoustic or vibration analysis

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Rolling Contact Bearings (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

PURPOSE:To enhance diagnostic precision by converting a solid sound generated by a bearing to an electric signal in the form of a speed acceleration signal, taking out only a frequency band required for diagnosis, obtaining an envelop wave-form and using as a scale for abnormality diagnosis a value obtained by a prearranged formula using the average square root value of a square of the envelop wave form and a peak value. CONSTITUTION:A speed acceleration detector 1 is closely 1 is closely attached to a bearing to be diagnosed and a solid sound generated from a bearing is converted to an electric signal in the form of a speed acceleration oscillation. Only a frequency band required for the diagnosis of a bearing of oscillation wave-forms is extracted by means of a filter 2. A signal passing through the filter 2 is introduced into an envelop detection circuit 3. An output signal from this circuit is fed to RMS value(Vrms) calculation circuit 5 and a peak value (Vpeak) calculation circuit 6, thus performing an operation of ''Q'' value as indicated by the formula I with the help of a calculation circuit 7. In this formula, (a) and (b) are constants. This Q value is decided by a decision circuit 11.
JP3934780A 1980-03-27 1980-03-27 Abnormality diagnostic device for roller bearing Granted JPS56135140A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3934780A JPS56135140A (en) 1980-03-27 1980-03-27 Abnormality diagnostic device for roller bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3934780A JPS56135140A (en) 1980-03-27 1980-03-27 Abnormality diagnostic device for roller bearing

Publications (2)

Publication Number Publication Date
JPS56135140A true JPS56135140A (en) 1981-10-22
JPS6157491B2 JPS6157491B2 (en) 1986-12-06

Family

ID=12550537

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3934780A Granted JPS56135140A (en) 1980-03-27 1980-03-27 Abnormality diagnostic device for roller bearing

Country Status (1)

Country Link
JP (1) JPS56135140A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58127142A (en) * 1982-01-26 1983-07-28 Nippon Seiko Kk Detector for bearing defect
JPS62151621A (en) * 1985-12-25 1987-07-06 Anritsu Corp Device for detecting abnormality in rolling bearing
JPS62270820A (en) * 1986-05-16 1987-11-25 Nippon Kokan Kk <Nkk> Method and device for bearing failure diagnosis by vibratory sound
JPS6449708A (en) * 1987-08-19 1989-02-27 Hitachi Ltd Abnormality diagnosing device for rolling bearing
JP2009229089A (en) * 2008-03-19 2009-10-08 Fuji Electric Systems Co Ltd Diagnostic method for rolling bearing of rotary machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58127142A (en) * 1982-01-26 1983-07-28 Nippon Seiko Kk Detector for bearing defect
JPS62151621A (en) * 1985-12-25 1987-07-06 Anritsu Corp Device for detecting abnormality in rolling bearing
JPS62270820A (en) * 1986-05-16 1987-11-25 Nippon Kokan Kk <Nkk> Method and device for bearing failure diagnosis by vibratory sound
JPS6449708A (en) * 1987-08-19 1989-02-27 Hitachi Ltd Abnormality diagnosing device for rolling bearing
JP2009229089A (en) * 2008-03-19 2009-10-08 Fuji Electric Systems Co Ltd Diagnostic method for rolling bearing of rotary machine

Also Published As

Publication number Publication date
JPS6157491B2 (en) 1986-12-06

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