JPH059505Y2 - - Google Patents
Info
- Publication number
- JPH059505Y2 JPH059505Y2 JP1988035199U JP3519988U JPH059505Y2 JP H059505 Y2 JPH059505 Y2 JP H059505Y2 JP 1988035199 U JP1988035199 U JP 1988035199U JP 3519988 U JP3519988 U JP 3519988U JP H059505 Y2 JPH059505 Y2 JP H059505Y2
- Authority
- JP
- Japan
- Prior art keywords
- weak point
- point pin
- proximity switch
- cover
- core rod
- 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.)
- Expired - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 24
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 238000013459 approach Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 229910001369 Brass Inorganic materials 0.000 claims description 4
- 239000010951 brass Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 230000007246 mechanism Effects 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- -1 ferrous metals Chemical class 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Hydraulic Turbines (AREA)
Description
【考案の詳細な説明】
［考案の目的］
（産業上の利用分野）
本考案は近接スイツチを用いた弱点ピン折損警
報装置に関する。[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a weak point pin breakage alarm device using a proximity switch.
（従来の技術）
水車のガイドベーン開閉機構の安全装置として
は、ガイドベーンリンクピンに弱点部を設けた弱
点ピンを使用し、ガイドベーン開閉動作の際に異
物がはさまつた場合には、この弱点ピンが切れて
他の機構に害を及ぼさないようになつている。ま
たこの弱点ピンには、折損した場合に、速やかに
警報を伝達するために折損警報装置が設けられて
いる。 (Prior art) As a safety device for the guide vane opening/closing mechanism of a water turbine, a weak point pin is used in which the guide vane link pin is provided with a weak point.If a foreign object gets caught during the guide vane opening/closing operation, this The weak point pin is designed so that it will not break and harm other mechanisms. Further, this weak point pin is provided with a breakage alarm device to promptly transmit an alarm in the event of breakage.
従来の弱点ピン折損警報装置は、リミツトスイ
ツチを頭部に取り付け、弱点ピンが破断すると同
時に芯棒も切断され、スプリングによつて頭部へ
押されてリミツトスイツチを働かせる構造となつ
ていた。さらに本考案者はこれらのリミツトスイ
ツチを使用した折損警報装置では、防水性保持に
問題があることを改良して防水型近接スイツチを
用いた弱点ピン折損警報装置を提案した（実開昭
64−8581号公報、実願昭62−102757号）。 Conventional weak point pin breakage alarm devices have a limit switch attached to the head, and when the weak point pin breaks, the core rod is also cut off and is pushed toward the head by a spring to activate the limit switch. Furthermore, the present inventor proposed a weak point pin breakage alarm device using a waterproof proximity switch by improving the problem that breakage alarm devices using these limit switches had problems in maintaining waterproofness.
(Publication No. 64-8581, Utility Application No. 102757/1983).
しかし、防水型近接スイツチを用いた従来の弱
点ピン折損警報装置においては、弱点ピンの折損
を警報によつて伝達する機構として、弱点ピンの
折損と同時に芯棒が折損してスプリングによつて
上方に押上げられ、その上方先端に取り付けられ
ている鉄片が近接スイツチの検知部に接触して近
接スイツチが動作する構造になつていた。 However, in the conventional weak point pin breakage alarm device using a waterproof proximity switch, the mechanism for transmitting an alarm about the breakage of the weak point pin is that the core rod breaks at the same time as the weak point pin breaks, and is raised upward by the spring. The structure was such that the iron piece attached to the upper tip came into contact with the detection part of the proximity switch, causing the proximity switch to operate.
（考案が解決しようとする課題）
このような従来の弱点ピン折損警報装置におい
ては、近接スイツチの検知部に対向する芯棒の先
端に鉄片を取り付けていた。しかし鉄片は非常に
錆やすく、錆のために盛り上がりを生じて芯棒の
体積が増し、近接スイツチの検出部との距離が短
くなり、誤動作を生じるおそれがある。また錆が
生じて鉄片の腐食部が欠落し固体部が次第に小さ
くなつて鉄片が無くなるおそれもある。(Problems to be Solved by the Invention) In such a conventional weak point pin breakage alarm device, an iron piece is attached to the tip of the core rod facing the detection section of the proximity switch. However, the iron piece is very susceptible to rust, and the rust causes bulges, increasing the volume of the core rod, shortening the distance from the detection part of the proximity switch, and potentially causing malfunction. There is also a risk that rust will occur and the corroded part of the iron piece will come off, the solid part will gradually become smaller and the iron piece will disappear.
本考案の目的は構成部品を鉄に比べて非常に錆
にくい材料で作ることにより、錆による誤動作を
生じさせない弱点ピン折損警報装置を提供するこ
とにある。 The purpose of the present invention is to provide a weak point pin breakage alarm device that does not cause malfunctions due to rust by making the component parts from a material that is much more rust-resistant than iron.
［考案の構成］
（課題を解決するための手段）
本考案の弱点ピン折損警報装置は、弱点ピンの
頭部に空間をおいて区画するカバーを取り付け、
このカバー内に被検出体の接近を感知するための
近接スイツチをその検出端が弱点ピンの頭部に対
向するように取り付け、前記弱点ピンの中心部の
軸方向に設けた長孔内に前記近接スイツチと対向
する先端にステンレス鋼、真鍮の如く鉄に比べて
非常に錆にくい材料で作つた検出片を取り付けた
芯棒を常にバネによつて近接スイツチに向う偏位
力が付与されるように挿入したことを特徴とする
ものである。[Structure of the invention] (Means for solving the problem) The weak point pin breakage alarm device of the present invention attaches a cover that partitions the head of the weak point pin with a space,
A proximity switch for sensing the approach of the object to be detected is installed in this cover so that its detection end faces the head of the weak point pin, and the proximity switch is inserted into the elongated hole provided in the axial direction of the center of the weak point pin. The tip of the rod facing the proximity switch is equipped with a detection piece made of a material such as stainless steel or brass that is much less rust-resistant than iron, so that a deflection force is always applied by a spring toward the proximity switch. It is characterized by being inserted into.
（作用）
本考案においては弱点ピンが折損すると、芯棒
も切断して上方へ押上げられ、その先端の検出片
が近接スイツチに接触する。近接スイツチが動作
することにより、表示灯が点灯してブザーが鳴つ
て弱点ピンの折損したことを警報する。(Function) In the present invention, when the weak point pin breaks, the core rod is also cut and pushed upward, and the detection piece at the tip contacts the proximity switch. When the proximity switch operates, the indicator light lights up and the buzzer sounds to alert you that the weak point pin has broken.
検出片は近接スイツチの検出方式に応じて金属
又は非鉄金属から選ばれるが、鉄に比べて非常に
錆にくい材料で作られているので、検出片の錆に
よる誤動作は生じない。 The detection piece is selected from metal or non-ferrous metal depending on the detection method of the proximity switch, but since it is made of a material that is much more rust-resistant than iron, malfunctions due to rust on the detection piece will not occur.
（実施例）
以下、本考案を第１図および第２図を参照して
説明する。(Example) The present invention will be described below with reference to FIGS. 1 and 2.
本考案の弱点ピン折損警報装置の全体を示す第
１図において、弱点ピン１は途中に弱点部２を有
し、例えば水車のガイドベーン開閉機構に使用せ
られ、ガイドベーン開閉動作の際に異物がはさま
つた場合にその弱点部２から切れて他の機構に害
を及ぼさないようになつている。 In FIG. 1 showing the whole of the weak point pin breakage alarm device of the present invention, a weak point pin 1 has a weak point 2 in the middle, and is used, for example, in a guide vane opening/closing mechanism of a water turbine. If it gets caught, it will break from the weak point 2 and will not harm other mechanisms.
弱点ピン１の中心に軸方向の長孔３を設け、こ
の長孔３の開口部にカバー４の受台５が螺合され
ている。この受台５の下部にアクリル製筒体６の
上端部を固定し、その上部にカバー４を着脱する
カバー受７を設けている。またカバー４の上部に
防水型近接スイツチ９をナツト１０によつて装着
し、そのリード線１１を外部に導出するととも
に、その根元部に表示灯１２を取り付けている。 A long hole 3 in the axial direction is provided at the center of the weak point pin 1, and a pedestal 5 of a cover 4 is screwed into the opening of the long hole 3. The upper end of the acrylic cylinder 6 is fixed to the lower part of the pedestal 5, and a cover holder 7 for attaching and removing the cover 4 is provided on the upper part. Further, a waterproof proximity switch 9 is attached to the upper part of the cover 4 with a nut 10, its lead wire 11 is led out to the outside, and an indicator light 12 is attached to its base.
一方、弱点ピン１の中心部の長孔３に挿入され
たアクリル製筒体６にプラスチツク製の芯棒１３
が貫通して設けられ、その下端は割ピン１４でア
クリル筒体６の底に係止している。また芯棒１３
の上端にはステンレス鋼、真鍮、銅、アルミの如
く鉄に比べて非常に錆にくい材料で作つた検出片
１５が設けられ、カバー受７を貫通して近接スイ
ツチ９の感知部と予定の間隔をおいて対峙してい
る。 On the other hand, a plastic core rod 13 is inserted into the acrylic cylinder 6 inserted into the elongated hole 3 in the center of the weak point pin 1.
is provided therethrough, and its lower end is locked to the bottom of the acrylic cylinder body 6 with a cotter pin 14. Also, the core rod 13
A detection piece 15 made of a material that is much less rust-resistant than iron, such as stainless steel, brass, copper, or aluminum, is installed at the upper end, and passes through the cover receiver 7 to connect it to the sensing part of the proximity switch 9 at a predetermined distance. We are facing each other.
しかして現在市販されている無接点近接スイツ
チ９の型式には、大別すると磁性体の検出片が検
出コイルに接近するとそのリアクタンスが変化す
ることを検出する可変リアクタンス方式、磁性体
の検出片の接近で検出コイルの電圧位相が変化す
ることを検出増幅する差動変圧器方式、移動体に
永久磁石を取り付けた永久磁石方式、発振コイル
に検出片である磁性体又は非磁性体の金属片が接
近すると発振を停止することを検出する高周波発
振方式があり、さらに金属、非鉄金属の接近で静
電容量の変化を検出する静電容量方式および金
属、非鉄金属の接近で超音波の減衰量あるいは反
射波の有無を検出する超音波方式のものがある。 However, the types of non-contact proximity switches 9 currently on the market can be roughly divided into variable reactance type, which detects that the reactance changes when a magnetic detection piece approaches a detection coil, and a variable reactance type, which detects that the reactance changes when a magnetic detection piece approaches a detection coil. A differential transformer method that detects and amplifies changes in the voltage phase of the detection coil due to approach, a permanent magnet method in which a permanent magnet is attached to the moving body, and a magnetic or non-magnetic metal piece as a detection piece in the oscillation coil. There is a high-frequency oscillation method that detects that oscillation stops when metals or non-ferrous metals approach, and a capacitance method that detects changes in capacitance when metals or non-ferrous metals approach. There is an ultrasonic type that detects the presence or absence of reflected waves.
したがつて、第１図における芯棒１３の上端に
取り付ける検出片１５としては、採用する近接ス
イツチ９のそれぞれの方式に応じてステンレス
鋼、真鍮、銅、アルミの如く鉄に比べて非常に錆
にくい材料の金属片又は非鉄金属片から選んで作
ることになる。また近接スイツチ９は第２図に等
価的に示すように制御電源Ｐ−Ｎの間に接続さ
れ、この近接スイツチ９の動作によつて発光ダイ
オードの表示灯１２が点灯するとともに、ブザー
１７を鳴らして警報を発生する構造になつてい
る。 Therefore, the detection piece 15 attached to the upper end of the core rod 13 in FIG. It is made by selecting a piece of metal or a piece of non-ferrous metal that is difficult to make. Further, the proximity switch 9 is connected between the control power supplies P and N as equivalently shown in FIG. The structure is such that an alarm is generated when the
次に、このように構成された本考案の弱点ピン
折損警報装置の作動を説明する。第１図に示す通
常の使用状態の弱点ピン１が弱点部２のもとで折
損すると、芯棒１３も切断されてバネ１６によつ
て上方へ押上げられる。芯棒１３の先端の検出片
１５が近接スイツチ９の感知部に接触することか
ら、第２図に示す近接スイツチ９が動作し、発光
ダイオードの表示灯１２を点灯させ、ブザー１７
を鳴らして警報を発する。そして検出片１５は鉄
片に比べて非常に錆にくい金属片又は非鉄金属片
で作られているので、検出片１５に錆が生じるこ
とがなく芯棒１３の動きに支障をきたすことはな
い。 Next, the operation of the weak pin breakage alarm device of the present invention constructed as described above will be explained. When the weak point pin 1 in the normal use condition shown in FIG. 1 breaks at the weak point 2, the core rod 13 is also cut and pushed upward by the spring 16. Since the detection piece 15 at the tip of the core rod 13 comes into contact with the sensing part of the proximity switch 9, the proximity switch 9 shown in FIG.
sound to issue an alarm. Since the detection piece 15 is made of a metal piece or a non-ferrous metal piece that is much less rust-resistant than an iron piece, the detection piece 15 does not rust and the movement of the core rod 13 is not hindered.
［考案の効果］
以上説明したように、本考案によれば、近接ス
イツチの芯棒の先端に取り付ける検出片をステン
レス鋼、真鍮の如く鉄に比べて非常に錆にくい材
料で作つているので、錆の発生で芯棒の動作に支
障をきたすことなく、長期にわたつて使用する場
合の信頼性が高く、耐久性のすぐれた弱点ピン折
損警報装置を得ることができる。[Effects of the invention] As explained above, according to the invention, the detection piece attached to the tip of the core rod of the proximity switch is made of a material that is much less rust-resistant than iron, such as stainless steel or brass. It is possible to obtain a weak point pin breakage alarm device that is highly reliable and durable when used for a long period of time without hindering the operation of the core rod due to the occurrence of rust.
第１図は本考案の弱点ピン折損警報装置の一実
施例を示す断面図、第２図はその電気回路図であ
る。
１……弱点ピン、２……弱点部、３……長孔、
４……カバー、５……カバー受台、６……アクリ
ル製筒体、７……カバー受、８……内蔵アンプ、
９……近接スイツチ、１０……リード線、１２…
…表示灯、１３……芯棒、１５……検出片、１６
……バネ、１７……ブザー。
FIG. 1 is a sectional view showing an embodiment of the weak pin breakage alarm device of the present invention, and FIG. 2 is an electrical circuit diagram thereof. 1... Weak point pin, 2... Weak point, 3... Long hole,
4...Cover, 5...Cover pedestal, 6...Acrylic cylinder, 7...Cover holder, 8...Built-in amplifier,
9... Proximity switch, 10... Lead wire, 12...
... Indicator light, 13 ... Core rod, 15 ... Detection piece, 16
...Spring, 17...Buzzer.
Claims (1)
を取り付け、このカバー内に被検出体の接近を感
知するための近接スイツチをその検出端が弱点ピ
ンの頭部に対向するように取り付け、前記弱点ピ
ンの中心部の軸方向に設けた長孔内に前記近接ス
イツチと対向する先端にステンレス鋼、真鍮の如
く鉄に比べて非常に錆にくい材料で作つた検出片
を取り付けた芯棒を常にバネによつて近接スイツ
チに向う偏位力が付与されるように挿入したこと
を特徴とする弱点ピン折損警報装置。 A cover is attached to the head of the weak point pin to divide it with a space, and a proximity switch for sensing the approach of a detected object is installed within the cover so that its detection end faces the head of the weak point pin, and the Always install a core rod with a detection piece made of a material that is extremely rust-resistant compared to iron, such as stainless steel or brass, attached to the tip facing the proximity switch in the elongated hole provided in the axial direction in the center of the weak point pin. A weak point pin breakage alarm device, characterized in that it is inserted so that a biasing force toward a proximity switch is applied by a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988035199U JPH059505Y2 (en) | 1988-03-18 | 1988-03-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988035199U JPH059505Y2 (en) | 1988-03-18 | 1988-03-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01139087U JPH01139087U (en) | 1989-09-22 |
| JPH059505Y2 true JPH059505Y2 (en) | 1993-03-09 |
Family
ID=31261851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988035199U Expired - Lifetime JPH059505Y2 (en) | 1988-03-18 | 1988-03-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH059505Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2589326Y2 (en) * | 1992-03-11 | 1999-01-27 | 東芝エンジニアリング株式会社 | Weak pin with breakage detector |
| JP2006161636A (en) * | 2004-12-06 | 2006-06-22 | Toshiba Corp | Connecting pin, manufacturing method thereof, connecting pin abnormality detecting device, and guide vane driving mechanism with the same pin and the same device |
-
1988
- 1988-03-18 JP JP1988035199U patent/JPH059505Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01139087U (en) | 1989-09-22 |
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