JPH033965Y2 - - Google Patents
Info
- Publication number
- JPH033965Y2 JPH033965Y2 JP1984072835U JP7283584U JPH033965Y2 JP H033965 Y2 JPH033965 Y2 JP H033965Y2 JP 1984072835 U JP1984072835 U JP 1984072835U JP 7283584 U JP7283584 U JP 7283584U JP H033965 Y2 JPH033965 Y2 JP H033965Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotating shaft
- magnetic pole
- pole piece
- grounding
- magnetic
- 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
Links
- 239000011553 magnetic fluid Substances 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 229910052709 silver Inorganic materials 0.000 description 5
- 239000004332 silver Substances 0.000 description 5
- 238000011109 contamination Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
- Elimination Of Static Electricity (AREA)
Description
【考案の詳細な説明】
「産業上の利用分野」
この考案は、回転する軸系で接地を必要とする
ときに用いられる回転軸系接地装置に関するもの
である。[Detailed Description of the Invention] "Industrial Application Field" This invention relates to a rotating shaft system grounding device used when a rotating shaft system requires grounding.
「従来の技術」
鋼船においては、推進軸系と船体との間に発生
する電位差を少くするため、軸系接地装置を設け
ることがある。"Prior Art" In steel ships, a shaft system grounding device is sometimes provided in order to reduce the potential difference generated between the propulsion shaft system and the hull.
第２図に、現在多く用いられている軸系接地装
置の側面図を示す。回転軸４の外周に導電性の良
い銀バンド２をまきつけ、ブラシ１により集電
し、接地用導線３ａ，３ｂで船体へ接続する構造
のものである。 FIG. 2 shows a side view of a shaft-based grounding device that is currently widely used. It has a structure in which a highly conductive silver band 2 is wrapped around the outer periphery of a rotating shaft 4, current is collected by a brush 1, and the current is connected to the hull by grounding conductors 3a and 3b.
「考案が解決しようとする問題点」
上記に説明の従来の軸系接地装置においては、
船舶機関室内雰囲気ではブラシ１と銀バンド２の
間に汚れが蓄積しやすく、電気抵抗値が増大し、
接地能力が低下する。このためブラシ１と銀バン
ド２は、頻繁に清掃が必要となる。又、ブラシ１
と銀バンド２は摺動しており、銀バンド２は高価
なものであるため、ブラシ１の材料にカーボンを
用い、少しづつ摩耗させているので、時々新品と
交換させる必要がある。"Problems to be solved by the invention" In the conventional shaft grounding device explained above,
In the atmosphere inside a ship's engine room, dirt tends to accumulate between the brush 1 and the silver band 2, increasing the electrical resistance value.
Grounding ability decreases. Therefore, the brush 1 and silver band 2 require frequent cleaning. Also, brush 1
The silver band 2 is sliding, and since the silver band 2 is expensive, carbon is used as the material for the brush 1, and since it wears out little by little, it is necessary to replace it with a new one from time to time.
「問題点を解決するための手段」
本考案は、上記に説明のように、ブラシと回転
軸摺動部との間の汚れによる接地能力低下を防止
して、これらの部品交換を不要にすることを目的
としてなされたもので、その特徴とするところ
は、回転軸のまわりに磁極片を配置し、回転軸と
磁極片の間に導電性磁性流体を注入して回転軸と
導電性磁性流体及び磁極片とで導電性を保持して
接地用導線で接地するもので、機械的摩耗、外部
からの汚れを防止するところにある。"Means for Solving the Problem" As explained above, the present invention prevents a decrease in ground contact ability due to dirt between the brush and the rotating shaft sliding part, making it unnecessary to replace these parts. It was developed for the purpose of It maintains conductivity with the magnetic pole pieces and is grounded with a grounding conductor, which prevents mechanical wear and external contamination.
即ち、本考案は、回転軸の周囲に一定間隔を保
ち、配置された環状形状を有する磁極片と、該磁
極片と回転軸との間隙部に注入され、同磁極片と
回転軸間を導電通させる導電性磁性流体と、前記
磁極片と外部構造体とを電気的に接続する接地用
導線とを具備してなることを特徴とする回転軸系
接地装置を提供するものである。 That is, the present invention provides magnetic pole pieces having an annular shape arranged at a constant interval around the rotating shaft, and injected into the gap between the magnetic pole piece and the rotating shaft to conduct electricity between the magnetic pole piece and the rotating shaft. The present invention provides a rotating shaft system grounding device characterized by comprising a conductive magnetic fluid that is passed through the magnetic fluid, and a grounding conductor that electrically connects the magnetic pole piece and an external structure.
「実施例」
第１図は、本考案の回転軸系接地装置の中心軸
での断面図を示している。Embodiment FIG. 1 shows a cross-sectional view along the central axis of the rotating shaft system grounding device of the present invention.
第１図において、回転軸１０の全周に円環状の
磁極片１１が一定間隔を保ち近接して配置されて
いる。回転軸１０と磁極片１１との間には導電性
磁性流体１２（例えば、水銀ベースのもの）が注
入され、回転軸１０と磁極片１１が電気的に接続
されるようになつている。更に磁極片１１と船体
構造部１４を接地用導線１３で接続している。 In FIG. 1, annular magnetic pole pieces 11 are arranged close to each other at regular intervals around the entire circumference of a rotating shaft 10. As shown in FIG. A conductive magnetic fluid 12 (for example, mercury-based) is injected between the rotating shaft 10 and the magnetic pole piece 11 so that the rotating shaft 10 and the magnetic pole piece 11 are electrically connected. Further, the magnetic pole piece 11 and the hull structure section 14 are connected by a grounding conductor 13.
上記構造の回転軸系接地装置は、磁極片１２に
より、磁極片１１と回転軸１０の間に、磁気回路
１５が構成され、磁極片１１と回転軸１０の間の
微小すき間に導電性磁性流体１２を注入すると、
この磁性流体１２は回転軸１０が回転しようと停
止しようと磁極片１１と回転軸１０の間に保持さ
れる。接地電流の方向１６は、回転軸１０より導
電性磁性流体１２、磁極片１１、接地用導線１３
を通り、船体１４へ流れることになる。 In the rotating shaft system grounding device having the above structure, a magnetic circuit 15 is configured between the magnetic pole piece 11 and the rotating shaft 10 by the magnetic pole piece 12, and a conductive magnetic fluid is inserted into the minute gap between the magnetic pole piece 11 and the rotating shaft 10. When injecting 12,
This magnetic fluid 12 is held between the magnetic pole piece 11 and the rotating shaft 10 whether the rotating shaft 10 rotates or stops. The direction 16 of the grounding current is from the rotating shaft 10 to the conductive magnetic fluid 12, the magnetic pole piece 11, and the grounding conductor 13.
It will flow to the hull 14 through.
「考案の効果」
以上説明の本考案による回転軸系接地装置によ
れば、回転軸のまわりに磁極片を配置し、回転軸
と磁極片の間に導電性磁性流体を注入して回転軸
と、磁性流体、磁極片とで導通を計り、構造部へ
接地したことにより、次のような著しい効果が得
られたものである。"Effects of the Invention" According to the rotating shaft system grounding device according to the present invention described above, a magnetic pole piece is arranged around the rotating shaft, and a conductive magnetic fluid is injected between the rotating shaft and the magnetic pole piece. By establishing continuity with the magnetic fluid, magnetic pole piece, and grounding the structure, the following remarkable effects were obtained.
(1) 従来方式のブラシに相当する部分が磁性流体
であり、機械的摩耗がない。従つて従来のよう
に頻繁に部品を交換する必要がなくなつた。(1) The part that corresponds to the conventional brush is made of magnetic fluid, so there is no mechanical wear. Therefore, there is no longer a need to replace parts as frequently as in the past.
(2) 軸の電気的接触部は常に磁性流体でおおわれ
ており、外部からの汚れの恐れがないので、接
地能力が低下することがなくなつた。(2) The electrical contact part of the shaft is always covered with magnetic fluid, so there is no risk of contamination from the outside, so there is no reduction in grounding ability.
第１図は、本考案の回転軸系接地装置の中心軸
での断面図、第２図は、従来の軸系接地装置の側
面図を示す。
１０：回転軸、１１：磁極片、１２：導電性磁
性流体、１３：接地用導線、１５：磁気回路、１
６：接地電流の方向。
FIG. 1 is a sectional view taken along the central axis of the rotary shaft grounding device of the present invention, and FIG. 2 is a side view of a conventional shaft grounding device. 10: Rotating shaft, 11: Magnetic pole piece, 12: Conductive magnetic fluid, 13: Grounding wire, 15: Magnetic circuit, 1
6: Direction of ground current.
Claims (1)
形状を有する磁極片と、該磁極片と回転軸との間
隙部に注入され、同磁極片と回転軸間を導通させ
る導電性磁性流体と、前記磁極片と外部構造体と
を電気的に接続する接地用導線とを具備してなる
ことを特徴とする回転軸系接地装置。 Annular magnetic pole pieces arranged at regular intervals around a rotating shaft; a conductive magnetic fluid that is injected into a gap between the magnetic pole piece and the rotating shaft to establish continuity between the magnetic pole piece and the rotating shaft; A rotating shaft system grounding device comprising a grounding conductor electrically connecting the magnetic pole piece and an external structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7283584U JPS60186673U (en) | 1984-05-18 | 1984-05-18 | Rotating shaft system grounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7283584U JPS60186673U (en) | 1984-05-18 | 1984-05-18 | Rotating shaft system grounding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60186673U JPS60186673U (en) | 1985-12-11 |
| JPH033965Y2 true JPH033965Y2 (en) | 1991-01-31 |
Family
ID=30611619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7283584U Granted JPS60186673U (en) | 1984-05-18 | 1984-05-18 | Rotating shaft system grounding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60186673U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4831516A (en) * | 1971-08-26 | 1973-04-25 | ||
| JPS49105490A (en) * | 1973-02-07 | 1974-10-05 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59129174U (en) * | 1983-02-17 | 1984-08-30 | 日立造船株式会社 | Shaft grounding device |
-
1984
- 1984-05-18 JP JP7283584U patent/JPS60186673U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4831516A (en) * | 1971-08-26 | 1973-04-25 | ||
| JPS49105490A (en) * | 1973-02-07 | 1974-10-05 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60186673U (en) | 1985-12-11 |
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