JPH0380987B2 - - Google Patents
Info
- Publication number
- JPH0380987B2 JPH0380987B2 JP63063099A JP6309988A JPH0380987B2 JP H0380987 B2 JPH0380987 B2 JP H0380987B2 JP 63063099 A JP63063099 A JP 63063099A JP 6309988 A JP6309988 A JP 6309988A JP H0380987 B2 JPH0380987 B2 JP H0380987B2
- Authority
- JP
- Japan
- Prior art keywords
- weak point
- point pin
- proximity switch
- core rod
- alarm 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.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 238000013459 approach Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000007665 sagging Methods 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
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、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 [Object of the Invention] (Industrial Application Field) 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。さらに発明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考案し、実願昭62−
102757号（実開昭64−8581号）で実用新案登録出
願を行つている。 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 severed and is pushed toward the head by a spring to activate the limit switch. Furthermore, the inventor improved the problem that breakage alarm devices using these limit switches had a problem in maintaining waterproofness, and devised a weak point pin breakage alarm device using a waterproof proximity switch.
An application for utility model registration has been filed under No. 102757 (Utility Model No. 64-8581).
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するとスプリングによつ
て上方に押し上げられ、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, as a mechanism for transmitting an alarm about the breakage of the weak point pin, if the core rod breaks at the same time as the weak point pin breaks, a spring alerts the weak point pin upward. When pushed up, the iron piece attached to the upper tip came into contact with the detection part of the proximity switch, which activated the proximity switch.
（発明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は、ス
プリングが常時芯棒によつて圧縮方向に力を受け
ており、長期にわたつて使用する場合には、スプ
リングにへたりが生じ、弱点ピンが折損した場合
でも芯棒が上方へ押し上げられず、近接スイツチ
が動作しないというおそれがある。(Problem to be Solved by the Invention) In such a conventional weak point pin breakage alarm device, the spring is constantly subjected to force in the compression direction by the core rod, and when used for a long period of time, the spring Even if the weak point pin is broken due to sagging, the core rod will not be pushed upwards and there is a risk that the proximity switch will not operate.
本発明の目的はスプリングを用いずに、芯棒の
自然落下によつて近接スイツチを動作させること
のできる弱点ピン折損警報装置を提供することに
ある。 SUMMARY OF THE INVENTION An object of the present invention is to provide a weak point pin breakage alarm device that can operate a proximity switch by the natural fall of a core rod without using a spring.
［発明の構成］
（課題を解決するための手段）
本発明の弱点ピン折損警報装置は、弱点ピンの
中心軸方向に設けた長孔の下端部内に感知部を上
向きにして近接スイツチを固定し、この近接スイ
ツチの感知部に芯棒の下端が予定間隔をもつて対
向し上端を固定支持する筒体を前記弱点ピンの長
孔に挿入して固定し、さらにその芯棒の先端に検
出物を取り付けたことを特徴とするものである。[Structure of the Invention] (Means for Solving the Problems) The weak point pin breakage alarm device of the present invention fixes a proximity switch with the sensing portion facing upward within the lower end of a long hole provided in the direction of the center axis of the weak point pin. The lower end of the core rod faces the sensing part of the proximity switch at a predetermined distance, and a cylinder that fixedly supports the upper end is inserted into the elongated hole of the weak point pin and fixed, and a detection object is attached to the tip of the core rod. It is characterized by the fact that it is equipped with.
（作用）
本発明においては弱点ピンが折損すると芯棒も
切断して自然落下し、その下端の検出物が近接ス
イツチに接触して近接スイツチが動作する。これ
によつて表示灯が点灯し、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 also breaks and falls naturally, and the detected object at the lower end contacts the proximity switch to operate the proximity switch. This lights up the indicator light and sounds the buzzer to alert you that the weak point pin has broken.
（実施例）
以下本発明を第１図および第２図に示す実施例
を参照して説明する。本発明の弱点ピン折損警報
装置の全体図を示す第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時にその弱点部２から
切れて他の機構に害をおよぼさないようになつて
いる。(Example) The present invention will be described below with reference to an example shown in FIGS. 1 and 2. In FIG. 1 showing the overall view of the weak point pin breakage alarm device of the present invention, weak point pin 1
has a weak point 2 in the middle, and is used, for example, in the guide vane opening/closing mechanism of a water turbine, and when a foreign object gets caught during the guide vane opening/closing operation, it can break from the weak point 2 and harm other mechanisms. I've learned not to do that.
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.
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７が
貫通して設けられ、その上端は支持金具８でアク
リル筒体６の上部に係止している。また弱点ピン
１の下部には、近接スイツチ９を固定金具１０で
挿着し、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を取り付けてお
り、前記芯棒７の下端に取り付けた検出物１３と
近接スイツチ９の感知部が予定の間隔をおいて対
峙している。 On the other hand, a plastic core rod 7 is provided to pass through the acrylic cylinder 6 inserted into the elongated hole 3 in the center of the weak point pin 1, and its upper end is engaged with the upper part of the acrylic cylinder 6 with a support fitting 8. It has stopped. Further, a proximity switch 9 is inserted into the lower part of the weak point pin 1 with a fixing metal fitting 10, and its lead wire 11 is led out to the outside, and an indicator light 12 is attached to its base, and the lower end of the core rod 7 The detection object 13 attached to the sensor and the sensing part of the proximity switch 9 face each other at a predetermined distance.
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近接物が
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
体の近接物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て検出本体に対して平行に
移動させる永久磁石方式および発振コイルに検出
物である磁性体又は非磁性体の金属が接近すると
発振を停止することを検出する高周波発振方式が
ある。さらに金属、非金属を検出する静電容量方
式および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 object approaches the detection coil, and a variable reactance type that detects that the reactance changes when a magnetic object approaches the detection coil. A differential transformer method detects and amplifies the change in the voltage phase of the detection coil due to the approach of the object, a permanent magnet method uses a permanent magnet attached to the moving body and moves it parallel to the detection body, and the oscillation coil is the detection object. There is a high-frequency oscillation method that detects that oscillation stops when magnetic or non-magnetic metal approaches. Furthermore, there are capacitive and ultrasonic methods that detect metals and non-metals.
したがつて、第１図における芯棒７の下端に取
り付ける検出物１３としては、可変リアクタンス
方式、差動変圧器方式、永久磁石方式、静電容量
方式および超音波方式のそれぞれの近接スイツチ
９の採用に応じて磁性体、非磁性体の金属片又は
非金属片を選択して使用することになる。 Therefore, the detection object 13 attached to the lower end of the core rod 7 in FIG. Depending on the application, a magnetic material, a non-magnetic metal piece, or a non-metallic piece is selected and used.
この無接点近接スイツチ９は第２図に等価的に
示すように制御母線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１４を鳴
らして警報を発するよう回路構成されている。 This non-contact proximity switch 9 is connected between the control bus lines P and N as equivalently shown in FIG. The circuit is configured to sound an alarm.
次にこのように構成された本発明の弱点ピン折
損警報装置の作動を説明する。第１図に示す通常
の使用状態において、弱点ピン１が弱点部２のも
とで折損すると、芯棒７も切断されて芯棒７の下
半部は自然落下によつて下方へ落ちる。芯棒７の
下端の検出物１３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１４を鳴らして警報を発する。 Next, the operation of the weak point pin breakage alarm device of the present invention configured as described above will be explained. In the normal use condition shown in FIG. 1, when the weak point pin 1 breaks at the weak point 2, the core rod 7 is also cut and the lower half of the core rod 7 falls downward by gravity. Since the detected object 13 at the lower end of the core rod 7 comes into contact with the sensing part of the proximity switch 9, the proximity switch 9 shown in FIG. emits.
［発明の効果］
以上のように本発明においては、弱点ピンが弱
点部で折損すると、芯棒も切断されて自然落下に
よつて芯棒の下端に取り付けた検出物が近接スイ
ツチの感知部に接触して近接スイツチが動作する
よう構成したことにより、今までのようにスプリ
ングを用いて芯棒に偏位力を与える方式のもので
のスプリングの劣化を心配する必要がなく、確実
に動作する弱点ピン折損警報装置を得ることがで
きる。[Effects of the Invention] As described above, in the present invention, when the weak point pin breaks at the weak point, the core rod is also severed and the object attached to the lower end of the core rod falls by itself, causing the detection object to reach the sensing part of the proximity switch. By configuring the proximity switch to operate upon contact, there is no need to worry about the deterioration of the spring in conventional systems that use a spring to apply deflection force to the core rod, and it operates reliably. A weak point pin breakage alarm device can be obtained.
第１図は本発明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……芯棒、８……支持金具、９……
近接スイツチ、１０……固定金具、１１……リー
ド線、１２……表示灯、１３……検出物、１４…
…ブザー。
FIG. 1 is a sectional view showing an embodiment of the weak point pin breakage alarm device of the present invention, and FIG. 2 is an electric circuit diagram thereof. 1... Weak point pin, 2... Weak point, 3... Long hole,
4... Cover, 5... Cover pedestal, 6... Acrylic cylinder, 7... Core rod, 8... Support metal fittings, 9...
Proximity switch, 10...Fixing bracket, 11...Lead wire, 12...Indicator light, 13...Detected object, 14...
…buzzer.
Claims (1)
内に感知部を上向きにして近接スイツチを固定
し、この近接スイツチの感知部に芯棒の下端が予
定間隔をもつて対向し上端を固定支持する筒体を
前記弱点ピンの長孔に又は接近挿入して固定し、
さらにその芯棒の先端に前記近接スイツチの感知
部に接触したときこれを動作させる検出物を取り
付けたことを特徴とする弱点ピン折損警報装置。1 Fix the proximity switch with the sensing part facing upward in the lower end of the elongated hole provided in the direction of the center axis of the weak point pin, and fix the upper end with the lower end of the core rod facing the sensing part of the proximity switch at a predetermined distance. A supporting cylindrical body is inserted into or close to the elongated hole of the weak point pin and fixed;
The weak point pin breakage alarm device is further characterized in that a detection object is attached to the tip of the core rod to activate the sensing portion of the proximity switch when it comes into contact with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63063099A JPH01237359A (en) | 1988-03-18 | 1988-03-18 | Alarm for breakage of weak point pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63063099A JPH01237359A (en) | 1988-03-18 | 1988-03-18 | Alarm for breakage of weak point pin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01237359A JPH01237359A (en) | 1989-09-21 |
| JPH0380987B2 true JPH0380987B2 (en) | 1991-12-26 |
Family
ID=13219510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63063099A Granted JPH01237359A (en) | 1988-03-18 | 1988-03-18 | Alarm for breakage of weak point pin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01237359A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011164080A (en) * | 2010-02-12 | 2011-08-25 | Kosuke Yamada | Monitoring method to immediately detect breakage of bolt or falling of attached object |
-
1988
- 1988-03-18 JP JP63063099A patent/JPH01237359A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011164080A (en) * | 2010-02-12 | 2011-08-25 | Kosuke Yamada | Monitoring method to immediately detect breakage of bolt or falling of attached object |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01237359A (en) | 1989-09-21 |
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