JPH0290416U - - Google Patents
Info
- Publication number
- JPH0290416U JPH0290416U JP16824388U JP16824388U JPH0290416U JP H0290416 U JPH0290416 U JP H0290416U JP 16824388 U JP16824388 U JP 16824388U JP 16824388 U JP16824388 U JP 16824388U JP H0290416 U JPH0290416 U JP H0290416U
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- effect element
- piezoelectric effect
- casing
- detection device
- 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
- 230000005856 abnormality Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Sliding-Contact Bearings (AREA)
Description
第１図は本考案の軸受の一例を示す正面図、第
２図は同軸受の異常検出装置の他のシステムを示
す説明図、第３図は本考案の他の実施例を示す断
面図、第４図は従来の加速度ピツクアツプ出力と
本考案の振動ピツクアツプ出力との関係を示すグ
ラフで、Ａは１００Hz、Ｂは２５０Hzにおける関
係を示す。第５図は従来のピツクアツプと本考案
のピツクアツプとの加速度の減衰波形を比較する
グラフ、第６図は従来の振動ピツクアツプの原理
図である。
１……軸受、３……ケーシング、４……凹部、
５……圧電効果素子、６……絶縁材。
FIG. 1 is a front view showing an example of the bearing of the present invention, FIG. 2 is an explanatory diagram showing another system of the abnormality detection device for the same bearing, and FIG. 3 is a sectional view showing another embodiment of the present invention. FIG. 4 is a graph showing the relationship between the conventional acceleration pickup output and the vibration pickup output of the present invention, where A shows the relationship at 100 Hz and B shows the relationship at 250 Hz. FIG. 5 is a graph comparing the acceleration attenuation waveforms of the conventional pickup and the pickup of the present invention, and FIG. 6 is a diagram of the principle of the conventional vibration pickup. 1...bearing, 3...casing, 4...recess,
5... Piezoelectric effect element, 6... Insulating material.
Claims (1)
グに、絶縁材が表面にコーテイングされた圧電効
果素子を密着させ、前記軸受本体あるいはケーシ
ング内を伝搬する振動によつて前記圧電効果素子
を直接変形させて電気信号を得ることを特徴とす
る軸受の異常検出装置。 (2) 振動を伝搬し易い薄板の中央に圧電効果素
子を固着しその周辺を軸受本体あるいは軸受を支
持するケーシングに固定する一方、前記圧電効果
素子の周囲に空間を形成する凹部を前記軸受本体
あるいはケーシングに形成し、前記薄板の振動に
よつて前記圧電効果素子を変形させて電気信号を
得ることを特徴とする軸受の異常検出装置。 (3) 前記圧電効果素子の出力信号をＩＣメモリ
ーカードに書き込む書込み装置を備えることを特
徴とする請求項(1)又は(2)に記載の軸受の異常検
出装置。[Claims for Utility Model Registration] (1) A piezoelectric effect element whose surface is coated with an insulating material is brought into close contact with a bearing body or a casing that supports the bearing, and the A bearing abnormality detection device characterized by obtaining an electric signal by directly deforming a piezoelectric effect element. (2) A piezoelectric effect element is fixed to the center of a thin plate where vibrations can easily propagate, and the periphery thereof is fixed to the bearing body or a casing that supports the bearing, while a recess forming a space around the piezoelectric effect element is fixed to the bearing body. Alternatively, a bearing abnormality detection device is formed in a casing, and the piezoelectric effect element is deformed by vibration of the thin plate to obtain an electric signal. (3) The bearing abnormality detection device according to claim (1) or (2), further comprising a writing device that writes the output signal of the piezoelectric effect element to an IC memory card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16824388U JPH0290416U (en) | 1988-12-28 | 1988-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16824388U JPH0290416U (en) | 1988-12-28 | 1988-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0290416U true JPH0290416U (en) | 1990-07-18 |
Family
ID=31457250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16824388U Pending JPH0290416U (en) | 1988-12-28 | 1988-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0290416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020101269A (en) * | 2018-12-25 | 2020-07-02 | 株式会社荏原製作所 | Rotating machine device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS577373A (en) * | 1980-06-12 | 1982-01-14 | Kawasaki Steel Corp | Method and device for removing slag in scarfer |
| JPS5714489A (en) * | 1980-06-30 | 1982-01-25 | Toshiba Corp | Laser welding equipment |
| JPS5981531A (en) * | 1982-10-30 | 1984-05-11 | Takasago Thermal Eng Co Lts | Prediction security method of bearing destruction |
-
1988
- 1988-12-28 JP JP16824388U patent/JPH0290416U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS577373A (en) * | 1980-06-12 | 1982-01-14 | Kawasaki Steel Corp | Method and device for removing slag in scarfer |
| JPS5714489A (en) * | 1980-06-30 | 1982-01-25 | Toshiba Corp | Laser welding equipment |
| JPS5981531A (en) * | 1982-10-30 | 1984-05-11 | Takasago Thermal Eng Co Lts | Prediction security method of bearing destruction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020101269A (en) * | 2018-12-25 | 2020-07-02 | 株式会社荏原製作所 | Rotating machine device |
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