JPS589549A - Ground system for shaft - Google Patents
Ground system for shaftInfo
- Publication number
- JPS589549A JPS589549A JP56104255A JP10425581A JPS589549A JP S589549 A JPS589549 A JP S589549A JP 56104255 A JP56104255 A JP 56104255A JP 10425581 A JP10425581 A JP 10425581A JP S589549 A JPS589549 A JP S589549A
- Authority
- JP
- Japan
- Prior art keywords
- brush
- shaft
- wear
- contact piece
- grounding 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
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052709 silver Inorganic materials 0.000 claims abstract description 19
- 239000004332 silver Substances 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims description 29
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- OGQICQVSFDPSEI-UHFFFAOYSA-N Zorac Chemical compound N1=CC(C(=O)OCC)=CC=C1C#CC1=CC=C(SCCC2(C)C)C2=C1 OGQICQVSFDPSEI-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- LQCKYENTJVICBF-UHFFFAOYSA-N copper silane Chemical compound [SiH4].[Cu] LQCKYENTJVICBF-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/58—Means structurally associated with the current collector for indicating condition thereof, e.g. for indicating brush wear
Abstract
Description
【発明の詳細な説明】
本発明は１回転機械に使用される軸接地装置に係り、特
に、ブラシの異常摩耗監視機能を備えた軸接地装置に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shaft grounding device used in a one-rotation machine, and more particularly to a shaft grounding device equipped with a function for monitoring abnormal wear of brushes.
タービン発電機その他の各種回転機械では、ＩＥ電気的
るいは機械的原因により軸電圧を発生することがあるが
、その値が過大となると１回転軸により直接または間接
的に駆動される制＃装胃や軸受に軸電流を誘起し、放電
や電蝕を生じさせるおそれがある。In turbine generators and other rotating machines, shaft voltage may be generated due to electrical or mechanical causes, but if this value becomes excessive, the control system that is directly or indirectly driven by the rotating shaft may There is a risk of inducing axial current in the stomach or bearings, causing electrical discharge or electrolytic corrosion.
このような現象に対する対策としてげ回転軸に誘起し之
電圧を軸接地装置を用いて大地に逃がす方法が広く用い
らｎている。As a countermeasure against such a phenomenon, a method is widely used in which a voltage is induced in the rotary shaft and the voltage is released to the ground using a shaft grounding device.
第１図に、低周速機において潤滑油による潤滑状態下で
使用される軸接地装置を例示するもので。FIG. 1 shows an example of a shaft grounding device used in a low-speed machine under lubrication with lubricating oil.
ケーシング１内に軸受２を介して回転自在に支承した軸
３には銀ブラシＢ１が接触している。銀ブラシＢ、はこ
ｎを保持するブラシ保持器４と、ケーシング１側に固着
しｆｃ ｒｆね受け５との間に介挿したばね６により軸
３の表面に所定の接触面圧で圧接している。従って、ケ
ーシングｌと軸３は、げね受け５．／ｆね６ｓブラシ保
持器４および銀ブラシＢ、によって電気的に接続され、
軸３とこれを支える軸受２の間に介在する潤滑油膜を介
しての放電や通電は未然に防止される。A silver brush B1 is in contact with a shaft 3 rotatably supported within the casing 1 via a bearing 2. The silver brushes B and B are pressed against the surface of the shaft 3 with a predetermined contact surface pressure by a spring 6 inserted between the brush holder 4 that holds the brushes B and the FC RF spring receiver 5 fixed to the casing 1 side. There is. Therefore, the casing l and the shaft 3 are connected to each other by the spring bearing 5. /fne6s brush retainer 4 and silver brush B, electrically connected,
Electric discharge and current flow through the lubricating oil film interposed between the shaft 3 and the bearing 2 that supports it are prevented.
第２図は周速が大きく、無潤滑状態で使用される回転機
械の軸接地装置を例示するもので、ｆクシＢ２としては
カーＲンブラシが使用されている。FIG. 2 shows an example of a shaft grounding device for a rotating machine that has a high circumferential speed and is used without lubrication, and a carn brush is used as the f-comb B2.
図中、符号７はブラシＢ２をガイドするブラケットを示
し、締結部材８を介してケーシングｌに電気的１機械的
に固定されている。この軸接地装置も第１図におけると
同様の機能を営む。なお、第２図およびそれ以降の図中
、第１図におけると同一の機能を有する部材にげ弔１図
と同じ符号を付し。In the figure, reference numeral 7 indicates a bracket that guides the brush B2, and is electrically and mechanically fixed to the casing l via a fastening member 8. This shaft grounding device also performs the same function as in FIG. In FIG. 2 and subsequent figures, members having the same functions as in FIG. 1 are designated by the same reference numerals as in FIG. 1.
［固別の説明に省略する。[Omitted to provide specific explanation.]
第３図および第４図はブラシＢ３として銅ブラシを使用
した軸接地装置を例示している。この場合。3 and 4 illustrate a shaft grounding device using a copper brush as the brush B3. in this case.
シランＢ３と軸３との接触は銅シラ？／Ｂ３の自重と弾
性変形に依っているので、長期的に弾性を維持し。Is the contact between silane B3 and shaft 3 copper silane? /Since it depends on B3's own weight and elastic deformation, it maintains its elasticity over a long period of time.
良好な接触状態を保つため、ブラシ素材としては。Brush material to maintain good contact.
塑性変形を起し易い銅平板ではなく、細い銅素線を撚り
介せて袋編みした銅編組線が使用されている。この銅ブ
ラシＢ、ハ締結部＄９．１０を介してブラケット７に電
気的１機械的に接続されている。Instead of a copper flat plate, which is prone to plastic deformation, a copper braided wire, which is made by twisting thin copper wires and knitting them in a bag, is used. This copper brush B is electrically and mechanically connected to the bracket 7 via a fastening part $9.10.
上述の従来の軸接地装置の各側にはいずれ４、使用状態
における軸接地装置の機能が正常に維持−されているか
どうかを判定することが極めて難かしいという欠点があ
る。即ち二ブラシの減耗の程Ｉｆｒｉ定期的な計測や目
視によって判定さｎるが。Each side of the above-mentioned conventional shaft grounding devices has the disadvantage that it is extremely difficult to determine whether the shaft grounding device is functioning normally in the operating condition. That is, the degree of wear and tear on the two brushes is determined by periodic measurement or visual inspection.
判定のためには運転員が軸接地装置の実際の取付場所ま
で出向いて観察しなければならないため。This is because in order to make a judgment, an operator must go to the actual installation location of the shaft grounding device and observe it.
運転員に大きな負担を課するという不都合がある。This has the disadvantage of imposing a large burden on the operator.
軸接地装置に生じる異常としては、ブラシの取りかえを
必要とするほどの摩耗量過大と、ｆラシと回転軸との接
触不良による接地機能喪失が代表的なものである。摩耗
量過大は摩耗が急激に進行する況ゆる異常摩耗によるも
のと、経年的に除々に進行する正常な摩耗現象とがあ−
るが、いずれにせよ、ブラシの畷りかえ時期を遅滞なく
検知することが極めて重要である。また、接触不良の現
象は摩耗量過大の結果として生じることも多く、軸接地
装置の異常監視としては摩耗量過大を監視することによ
り、その目的の大半を達成することができる。従って、
摩耗量過大の遠隔自動監視が可能であれば、運転員の負
担を軽減するのみならず。Typical abnormalities that occur in the shaft grounding device include excessive wear to the extent that the brush needs to be replaced, and loss of grounding function due to poor contact between the f brush and the rotating shaft. Excessive wear is caused by abnormal wear that progresses rapidly, and normal wear that progresses gradually over time.
However, in any case, it is extremely important to detect when it is time to replace the brush without delay. Moreover, the phenomenon of poor contact often occurs as a result of excessive wear, and most of the objectives of abnormality monitoring of the shaft grounding device can be achieved by monitoring excessive wear. Therefore,
If it were possible to remotely and automatically monitor excessive wear, it would not only reduce the burden on the operator.
回転機械の運転信頼性を向上させること極めて大と言う
ことができる。It can be said that it is extremely important to improve the operational reliability of rotating machinery.
本発明はかかる点に着目してなされたもので。The present invention has been made with attention to this point.
軸接地！Ｉ：に摩耗量過大を判定するための電気回路を
組込み、Ｉ！電気的、かつ遠隔地においても容易に摩耗
量過大の監視が行なえるようにした軸接地装置を提供す
ることを目的とするものである。Axis grounding! An electric circuit is installed in I: to determine whether the amount of wear is excessive, and I! It is an object of the present invention to provide a shaft grounding device that allows excessive wear to be easily monitored electrically and even at a remote location.
以下本発明の実施例を第５図乃至第１１図を参照して説
明する。なお、これらの図においても、第１図ないし第
４図におけると同一の機能を有する部材にはそれらと同
じ符号を付し、詳細な説明は省略する。Embodiments of the present invention will be described below with reference to FIGS. 5 to 11. In these figures, members having the same functions as those in FIGS. 1 to 4 are designated by the same reference numerals, and detailed explanations thereof will be omitted.
第５図は本発明を第１図示の銀ブラシＢ１使用の軸接地
装置に適用した実施例を示すもので、同図中符号１１は
導電材質の摩耗検知接片を示す。この摩耗検知接片１１
は、銀ブラシＢ、のブラシ本体１２中に埋設された絶縁
スリーｆ１３および絶縁被覆１４を介して、ブラシＢ１
とは電気的に絶縁さｎた状態でこれに一体的に装着さｎ
ている。FIG. 5 shows an embodiment in which the present invention is applied to a shaft grounding device using the silver brush B1 shown in FIG. This wear detection contact piece 11
through the insulating sleeve f13 and the insulating coating 14 embedded in the brush body 12 of the silver brush B1.
It is integrally attached to this while being electrically insulated from the
ing.
上記摩耗検知接片１１の！う７本体１２に対する関係位
＃は、！ラフ本体の回転軸対向面（第５図では下端面）
に植設され１回転軸３と直接摺接するブラシ歯１５ 、
１５の限界残存を亀）程度（第５図参照）ブラシ本体下
端面から突出し、ブラシ＠１５の摩耗骨が許容限界内に
あるときには、摩耗検知接片１１の突出端と回転軸３と
の間に間隔が保たれるように定められている。なお、第
５図示の摩耗検知接片１１は、その突出端面を含む全体
を絶縁被覆１４で覆われているが、このことは本発明の
必須の要件ではなく、ブラシ本体１２との絶縁が保たれ
れば。Of the above wear detection contact piece 11! The relational position # to U7 body 12 is! The surface of the rough body facing the rotation axis (lower end surface in Figure 5)
Brush teeth 15 that are implanted in and make direct sliding contact with the one-rotation shaft 3,
When the wear bone of the brush @ 15 is within the permissible limit, it protrudes from the lower end surface of the brush body (see Figure 5), and when the wear bone of the brush @ 15 is within the allowable limit, there is a gap between the protruding end of the wear detection contact piece 11 and the rotating shaft 3. It is determined that a distance is maintained between the two. Note that the wear detection contact piece 11 shown in FIG. If it drips.
摩耗検知接片１】を露出していてもよい。The wear detection contact piece 1] may be exposed.
また、上記摩耗検知接片１１は、前記絶縁スＩＪ −ゾ
１３に挿通された被覆導線】６１例えば表示ランプなど
の摩耗表示装置ｉ１７．常時は閉成されているスイッチ
１８．例えｒｆ、電池などの電源１９．および前記ケー
シング１（第１図参照）に付設された接地器４Ｊ［ｌを
介して、大地２Ｊに接地されている。Further, the wear detection contact piece 11 is connected to a coated conductive wire inserted through the insulating tube IJ-Z13 and a wear display device I17, such as an indicator lamp. Switch 18, which is normally closed. Power sources such as RF, batteries, etc. 19. And it is grounded to the earth 2J via a grounding device 4J [l attached to the casing 1 (see FIG. 1).
一方、ブラシ本体１２も導＃ｉ！１６を介して接地母線
かに接続さｎている。なお、上記ブラシ本体１２ハ。On the other hand, the brush body 12 is also conductive #i! 16 to the ground busbar. In addition, the brush main body 12c.
前記し友ように、ブラシ保持器４、ばね６ （第１図参
照）およびｄｔ２受け５等を介してケーシング１と導通
している〃λら、上記ブラシ本体接地用の被榎導緋１６
は本来必要なものではないが、説明の便宜のためこれを
示すものである。As mentioned above, the conductor 16 for grounding the brush body is electrically connected to the casing 1 via the brush holder 4, the spring 6 (see Fig. 1), the dt2 receiver 5, etc.
is not originally necessary, but is shown for convenience of explanation.
上記のように構成された本発明の一実施例による軸接地
装＠は、シラ７ｍ１５の摩耗量が許容範囲内にあるとき
には、従来の軸接地装置と同様に作動し１回転軸３を大
地２１に接地して軸嵯圧を常時解消し続ける。このとき
、第５図から明らかなように、表示ランプ１７は点燈さ
れない。The shaft grounding device @ according to the embodiment of the present invention configured as described above operates in the same manner as the conventional shaft grounding device when the wear amount of the shield 7m15 is within the allowable range, and the shaft 3 rotates one rotation to the ground 21. The shaft is grounded and the shaft pressure is constantly relieved. At this time, as is clear from FIG. 5, the display lamp 17 is not lit.
ブラシ歯１５の摩耗が進み、ブラシ歯の使用可能な長さ
が前記限界残存僧・ａに近ずくと、シラ７本体１２に一
体的に装着さｔ＋、 ７ｐ ｗ耗検知接片１１もブラシ
歯の摩耗量分回転軸３に近接するから、先ず摩耗検知接
片１１の突出端を覆っている絶縁被覆１４が回転軸３と
接触し、以後の摺接によって絶縁被覆１４の摩耗が進ん
で、ついには摩耗検知接片１１の先端が回転軸３に接触
するに至る。When the wear of the brush teeth 15 progresses and the usable length of the brush teeth approaches the limit remaining length a, the wear detection contact piece 11, which is integrally attached to the main body 12 of the shield 7, is also removed from the brush teeth. Since it approaches the rotating shaft 3 by the amount of wear, the insulating coating 14 covering the protruding end of the wear detection contact piece 11 comes into contact with the rotating shaft 3, and the subsequent sliding contact progresses the wear of the insulating coating 14. Eventually, the tip of the wear detection contact piece 11 comes into contact with the rotating shaft 3.
すると１回転軸３を介して摩耗検知接片１１が接地され
ることになり、第５図から明らかなように。Then, the wear detection contact piece 11 is grounded via the one-rotation shaft 3, as is clear from FIG.
前記表示ランプ１７に電源１９の電圧が印加されて表示
ランプ１７が点燈され、これによってブラシの摩耗限界
点到達を運転員に知らせることができる。The voltage of the power supply 19 is applied to the indicator lamp 17, and the indicator lamp 17 is turned on, thereby informing the operator that the brush has reached its wear limit.
この表示ランプ１７を運転員控室あるいは運転制御室に
設置すれば、運転員は現場に点検に行かなくても居なが
らにしてブラシの摩耗状態を監視することが可能となる
。なお、摩耗表示装置としての表示ランプ１７０点燈後
、要すれば、スイッチ１８を開放して電源１９の消耗を
防止する。しかしながら。If this indicator lamp 17 is installed in the operator's waiting room or the operation control room, the operator can monitor the wear condition of the brushes from his/her own place without having to go to the site for inspection. Incidentally, after the indicator lamp 170 as a wear indicator turns on, if necessary, the switch 18 is opened to prevent the power source 19 from being consumed. however.
このスイッチｌｌｊ本発明の必須の要件ではない。This switch is not an essential requirement of the present invention.
第６図は本発明の変形実施例を示し、この実施例は、摩
耗検知接片１１をブラシ本体１２にではなく。FIG. 6 shows a modified embodiment of the invention, in which the wear-sensing contact piece 11 is not attached to the brush body 12.
ブラシ保持器４の外側面に絶縁板ｎ、２２を介してねじ
止めしたもので、摩耗表示装置等は省略して示す。第６
図に示すものの作用効果は第５図示のものと同様である
から、その詳細な説明は省略する。It is screwed to the outer surface of the brush holder 4 via insulating plates n and 22, and the wear indicator and the like are omitted from illustration. 6th
Since the operation and effect of what is shown in the figure is the same as that shown in the fifth figure, detailed explanation thereof will be omitted.
第７図は本発明の他の賓形実施例を示し、この実施例は
、第５図に示すブラシ本体下端面からの突出長さａの摩
耗検知接片１１ ｍの他に、突出長さが１とに異なるｂ
の他の摩耗検知接片１１ｂを付設し、これらをそれぞれ
相異なる表示ランプ１７１あるいは１７ｂに接続したも
のである。このようにすると、ブラシの摩耗に従い先ず
表示ランプ１７ｂが点燈され１次いで表示ランプ１７！
Ｌが点燈されるから、この２つの表示ランプの点燈時間
差から単位時間当りのプラク歯１５の摩耗ｔを計算する
ことができ、また１表示ランプ１７ｍが点燈されてから
回転軸３が直接シラ７本体】２に接触するまでの余裕時
間を知ることができる。さらに、突出長さの異なる３本
以上の摩耗検知接片を設け、それぞれを別異の表示ラン
プに接続すｉば、ブラシ歯１５の摩耗状況を経時的に把
握することができ、より正確なプランの管理ができると
いう利点が生ずる。FIG. 7 shows another passenger-shaped embodiment of the present invention. is different from 1 b
Other wear detection contacts 11b are attached, and these are connected to different indicator lamps 171 or 17b, respectively. In this way, as the brush wears, the indicator lamp 17b is lit first, and then the indicator lamp 17!
Since L is turned on, the wear t of the plaque teeth 15 per unit time can be calculated from the difference in the lighting time of these two indicator lamps, and after the 1 indicator lamp 17m is turned on, the rotating shaft 3 is You can know the margin time until it comes into direct contact with the main body of Shira 7]2. Furthermore, if three or more wear detection contacts with different protruding lengths are provided and each is connected to a different indicator lamp, the wear status of the brush teeth 15 can be grasped over time, making it more accurate. This provides the advantage of being able to manage the plan.
第８図は本発明のさらに他の変形実施例を示し。FIG. 8 shows yet another modified embodiment of the invention.
この実施例は、第２図示のカーゼンブラシＢ２使用の軸
接地装置に本発明を適用したものである。第８図におい
て符号１１は前記摩耗検知接片を示し。In this embodiment, the present invention is applied to a shaft grounding device using the Cursen brush B2 shown in the second figure. In FIG. 8, reference numeral 11 indicates the wear detection contact piece.
この摩耗検知接片１】は、全体を絶縁スリーブ１３によ
って被覆され、カージン製のプラン本体１２とブラシ保
持器４との結合を確更にするための芯杆るより限界残存
量亀だけ先端が自転軸３に近接した状態で、ブラフ摩耗
方向に沿うて全体がブラシ本体１２中に埋設されている
。なお１Ｍ粍検知接片１１に接続される表示ランプ等は
その図示を省略する。This wear detection contact piece 1 is entirely covered with an insulating sleeve 13, and the tip rotates on its own axis by the limit remaining amount from the core rod to ensure the connection between the cardin plan body 12 and the brush holder 4. The entire brush body 12 is embedded in the brush body 12 in the vicinity of the shaft 3 and along the bluff wear direction. Note that the illustration of the indicator lamp and the like connected to the 1M metallurgy detection contact piece 11 is omitted.
第８図示のものに、その作用効果に第５図示のものと同
様であるからその詳細な説明は省略する。The operation and effect of the device shown in FIG. 8 is similar to that shown in FIG. 5, so a detailed explanation thereof will be omitted.
なお、第８図に示すカージンシランＢ２使用の軸接地装
置においても、第６図あるいは第７図に示す変形例が考
えられることは勿論である。It goes without saying that the shaft grounding device using cardin silane B2 shown in FIG. 8 may also be modified as shown in FIG. 6 or 7.
第９図および第１０図は本発明の別の変形実施例を示し
、この実施例は、第３図および第４図に示す銀ブラシＢ
３使用の軸接地装置に本発明を適用したものである。す
なわち、第９図および第１Ｏ図において符号１１ハ板状
の摩耗検知接片を示し、この摩耗検知接片１１は、全体
を絶縁被覆１４で覆われた状態で１袋状の銀ブラシ本体
】２の開口端から内幅一杯に挿入されている。Ｓまた。9 and 10 show another modified embodiment of the present invention, which includes the silver brush B shown in FIGS. 3 and 4.
The present invention is applied to a shaft grounding device used in 3 types. That is, in FIG. 9 and FIG. 1O, reference numeral 11 shows a plate-shaped wear detection contact piece, and this wear detection contact piece 11 is entirely covered with an insulating coating 14 and has a bag-like silver brush body.] It is inserted from the open end of 2 to the full inner width. S again.
上記摩耗検知接片１１は、前記他の実施例におけるそれ
と同様に。The wear detection contact piece 11 is the same as that in the other embodiments.
図示しない表示ランプ等を介して接地されている。It is grounded via an indicator lamp (not shown) or the like.
第９図および第１０図に示す軸接地装置においては１回
転軸３と接触している側の銅ゾラク袋編み部が摩耗して
すり切ｎた後、絶縁被覆１４が回転軸３と接触してさら
にこれも摩耗すると、摩耗検知接片１１が回転軸に接触
して表示ランプが作動することは前記した実施例と同様
である。In the shaft grounding device shown in FIGS. 9 and 10, after the copper Zorac bag knitted portion on the side that is in contact with the rotating shaft 3 is worn out and frayed, the insulation coating 14 comes into contact with the rotating shaft 3. Furthermore, when this wears out, the wear detection contact piece 11 comes into contact with the rotating shaft and the indicator lamp is activated, as in the embodiment described above.
しかして１本発明を銀ブラシＢ６に適用した第９゜１０
図示の軸接地装置は、銅ブラシの形状を偏平に保ち、従
来のものが長時間の使用によって、第１１図に示すよう
に、ふくらむように塑性変形して回転軸３との接触不良
が発生するという不都合を解消できるし、また、接触面
圧を一足に保って銀ブラシの機能および信頼性を向上さ
せるという別の利点も生ずる。Therefore, the present invention was applied to the silver brush B6 in No. 9゜10.
The shaft grounding device shown in the figure keeps the shape of the copper brush flat, and when used for a long period of time, the conventional shaft grounding device bulges out and becomes plastically deformed, resulting in poor contact with the rotating shaft 3, as shown in FIG. This eliminates the inconvenience caused by the silver brush, and also provides another advantage in that the contact surface pressure is maintained at a constant level, thereby improving the function and reliability of the silver brush.
上述の如く１本発明はブラシに電気的に絶縁された摩耗
検知接片を一体的に％着し、ブラシが許容限界を越えて
摩耗したとき摩耗検知接片を回転軸に接触せしめて摩耗
表示装置を作動させるようにしたから、軸接地装置の過
大摩耗の有無を常時容易に、しかも遠隔地からも監視す
ることが可能となり、運転員の負担を大巾に軽減するこ
とができる。また、異常の有無を高梢度に判足し得るの
で、保守点検を適確に行なうことができ１回転機械の長
期運用における信頼性を大ＩＪに向上させることが可能
となる。As described above, one aspect of the present invention is to integrally attach an electrically insulated wear detection contact piece to a brush, and when the brush wears beyond an allowable limit, the wear detection contact piece is brought into contact with the rotating shaft to display wear. Since the device is activated, it is possible to easily monitor whether or not there is excessive wear on the shaft grounding device at all times, even from a remote location, and the burden on the operator can be greatly reduced. Furthermore, since the presence or absence of an abnormality can be determined with a high degree of accuracy, maintenance and inspection can be performed accurately, and the reliability of a single-rotation machine in long-term operation can be improved to a large IJ.
さらＫまた１本発明は従来の軸接地装置の基本的構造を
変えることなく、簡単な電気的回路の付加により実現で
きるので、現用設備にも容易に適用することができる。Furthermore, the present invention can be realized by adding a simple electrical circuit without changing the basic structure of the conventional shaft grounding device, and therefore can be easily applied to current equipment.
なお１以上の説明では摩耗表示装置として表示ランプを
採用し、その点燈によってブラシの異常摩耗を検知する
ものとしたが、こｔｌは例えばブザー等の他の警報装置
を用い、あるいに併用してもよいことは勿論である。In addition, in the above explanation, an indicator lamp is used as a wear display device, and abnormal wear of the brush is detected by lighting the indicator lamp. Of course, you can do it.
第１図ないし第３図は夫々従来の軸接地装置の構成例を
示すプラン部分近傍の縦断面図、第４図は第３図のｆｆ
−ＩＶ線による端面図、第５図に第１図の銀ブラシを
用いた軸接地装置に本発明に適用した実施例を示す断面
図、第６図および第７図はその変形実施例を示す断面図
、第８図は第２図のカーデンブラシを用いた軸接地装置
に本発明を適用した変形実施例を示ｆ断面図、第９図は
第３図および第４図に示す銅ブラシを用いた軸接地装置
への適用例を示す一部断面図、第１０図は第９図Ｘ−Ｘ
線による断面１図、第１１図は銀ブラシの長期使用によ
る塑性変形形状の一例を示す断面図である。
３・・・回転軸、４・・・ブラシ保持器、５・・・ばね
受。
６・・・げね、７・・・ブラケット、１１・・・摩耗検
知接片、１２・・・ブラシ本体、１３・・・絶縁スリー
！、１４・・・絶縁被υ、 １５・・・ブラシ歯、１７
・・・摩耗表示装置、 １９・・・［諒、Ｂ１・・・銀
ブラシ、Ｂ２・・・カーゼンノラン、ＢＳ・・・銅ブラ
シ。
出願人代理人 猪 股 清
底５ 図
１ 図
／６
Ｌ７ 図
１６
纂８図
孔ｑｅ
？、７７図
ノ２
幕ｆ０聞Figures 1 to 3 are longitudinal cross-sectional views of the vicinity of the plan part showing configuration examples of conventional shaft grounding devices, respectively, and Figure 4 is the ff of Figure 3.
- An end view taken along line IV, FIG. 5 is a cross-sectional view showing an embodiment applied to the present invention to the shaft grounding device using the silver brush shown in FIG. 1, and FIGS. 6 and 7 show modified embodiments thereof. A sectional view, FIG. 8 shows a modified embodiment in which the present invention is applied to the shaft grounding device using the carden brush shown in FIG. A partial sectional view showing an example of application to the shaft grounding device used, Figure 10 is Figure 9 X-X
1 and 11 are cross-sectional views showing an example of a plastically deformed shape of a silver brush due to long-term use. 3...Rotating shaft, 4...Brush retainer, 5...Spring holder. 6...Gene, 7...Bracket, 11...Abrasion detection contact piece, 12...Brush body, 13...Insulating three! , 14... Insulation υ, 15... Brush teeth, 17
...Wear indicator, 19...[Ryo, B1...Silver brush, B2...Carzennolan, BS...Copper brush. Applicant's agent Inomata Seishoku 5 Figure 1 Figure/6 L7 Figure 16 纂8 口 qe? , Figure 77 No. 2 Act f0
Claims (1)
軸電圧発生を防止するものにおいて、上記ブラシに、こ
れと電気的に絶縁された摩耗検知接片を回転軸との間に
間隔を保って一体的に装着すると共に、この摩耗検知接
片を、摩耗表示装置および電源を介して接地し、ブラシ
が摩耗して上記摩耗検知接片が回転軸に接触したとき、
上記摩耗表示装置を作動させるようにしたことを特徴と
する軸接地装置。 ２、上記ブラシが銀ブラシあるいはカー２ンゾラシであ
り、上記摩耗検知接片をブラシ本体中に埋設するように
装着したことを特徴とする特許請求の範囲第１項記載の
軸接地装置。 ３、上記ブラシが銀ブラシあるいはカー２ンブラシであ
り、上記摩耗検知接片をブラシの保持器に装着するよう
にしたことを特徴とする特許請求の範囲第１項記載の軸
接地装置。 ４、回転軸からの間隔が異なる検数の摩耗検知接片を有
することを特徴とする特許請求の範囲第１項乃至第３項
のいずれかに記載の軸接地装置。 ５、前記ブラシが素線を袋編みにした銅ブラシでちり、
摩耗検知接片をその袋中に収納するように装着したこと
を特徴とする特許請求の範囲第１項記載の軸接地装置。[Claims] 1. A brush is brought into sliding contact with the outer peripheral surface of a rotating shaft of a rotating machine. In a device that prevents the generation of shaft voltage on the rotating shaft by grounding this brush, a wear detection contact piece that is electrically insulated from the brush is integrally installed with a distance between the brush and the rotating shaft. At the same time, the wear detection contact piece is grounded via a wear display device and a power source, and when the brush is worn and the wear detection contact piece comes into contact with the rotating shaft,
A shaft grounding device characterized in that the wear display device is activated. 2. The shaft grounding device according to claim 1, wherein the brush is a silver brush or a silver brush, and the wear detection contact piece is embedded in the brush body. 3. The shaft grounding device according to claim 1, wherein the brush is a silver brush or a carnine brush, and the wear detection contact piece is attached to a holder of the brush. 4. The shaft grounding device according to any one of claims 1 to 3, characterized in that the shaft grounding device has a number of wear detection contact pieces having different distances from the rotating shaft. 5. The brush is a copper brush made of bag-knitted wire, and
2. The shaft grounding device according to claim 1, wherein the wear detection contact piece is mounted so as to be stored in the bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56104255A JPS589549A (en) | 1981-07-03 | 1981-07-03 | Ground system for shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56104255A JPS589549A (en) | 1981-07-03 | 1981-07-03 | Ground system for shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS589549A true JPS589549A (en) | 1983-01-19 |
Family
ID=14375816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56104255A Pending JPS589549A (en) | 1981-07-03 | 1981-07-03 | Ground system for shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS589549A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0723318A2 (en) * | 1992-09-02 | 1996-07-24 | Schunk Kohlenstofftechnik GmbH | Carbon brush |
| KR100411164B1 (en) * | 2001-08-22 | 2003-12-18 | 기아자동차주식회사 | Brush wear alarming device for vehicle alternator |
| WO2008132099A1 (en) * | 2007-04-26 | 2008-11-06 | Siemens Aktiengesellschaft | Tapping device for tapping electric potential from a shaft of an electric machine, corresponding assembly set and corresponding electric machine |
| CN103607074A (en) * | 2013-11-15 | 2014-02-26 | 东方电气（乐山）新能源设备有限公司 | A grounding ring structure of a wind power generator rotor |
| JP2018164406A (en) * | 2013-09-09 | 2018-10-18 | カッツフォース インコーポレイテッドＣｕｔｓｆｏｒｔｈ，Ｉｎｃ． | Grounding rope for shaft grounding device of generator motor |
| CN113772342A (en) * | 2020-06-09 | 2021-12-10 | 湖南杉杉能源科技股份有限公司 | Screw feeder |
-
1981
- 1981-07-03 JP JP56104255A patent/JPS589549A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0723318A2 (en) * | 1992-09-02 | 1996-07-24 | Schunk Kohlenstofftechnik GmbH | Carbon brush |
| EP0723318A3 (en) * | 1992-09-02 | 1996-11-13 | Schunk Kohlenstofftechnik Gmbh | Carbon brush |
| KR100411164B1 (en) * | 2001-08-22 | 2003-12-18 | 기아자동차주식회사 | Brush wear alarming device for vehicle alternator |
| WO2008132099A1 (en) * | 2007-04-26 | 2008-11-06 | Siemens Aktiengesellschaft | Tapping device for tapping electric potential from a shaft of an electric machine, corresponding assembly set and corresponding electric machine |
| JP2018164406A (en) * | 2013-09-09 | 2018-10-18 | カッツフォース インコーポレイテッドＣｕｔｓｆｏｒｔｈ，Ｉｎｃ． | Grounding rope for shaft grounding device of generator motor |
| US10734871B2 (en) | 2013-09-09 | 2020-08-04 | Cutsforth, Inc. | Grounding rope for a shaft grounding apparatus of a dynamo-electric machine |
| CN103607074A (en) * | 2013-11-15 | 2014-02-26 | 东方电气（乐山）新能源设备有限公司 | A grounding ring structure of a wind power generator rotor |
| CN113772342A (en) * | 2020-06-09 | 2021-12-10 | 湖南杉杉能源科技股份有限公司 | Screw feeder |
| CN113772342B (en) * | 2020-06-09 | 2023-11-21 | 巴斯夫杉杉电池材料有限公司 | Screw feeder |
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