JPH0568180B2 - - Google Patents
Info
- Publication number
- JPH0568180B2 JPH0568180B2 JP5845385A JP5845385A JPH0568180B2 JP H0568180 B2 JPH0568180 B2 JP H0568180B2 JP 5845385 A JP5845385 A JP 5845385A JP 5845385 A JP5845385 A JP 5845385A JP H0568180 B2 JPH0568180 B2 JP H0568180B2
- Authority
- JP
- Japan
- Prior art keywords
- field coil
- support plate
- coil support
- bolt
- laminated
- 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
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-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
- 230000004323 axial length Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/527—Fastening salient pole windings or connections thereto applicable to rotors only
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は回転電機の突極界磁に係り、特に界磁
コイルを強固に支持するのに好適な界磁コイル支
持装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a salient pole field for a rotating electrical machine, and particularly to a field coil support device suitable for firmly supporting a field coil.
従来の界磁コイル支持装置は、実開昭57−
14648号公報に記載のように、ボルト締付部にお
いて、界磁コイル支持板に対する機械的強度補強
材が使用されない構造となつている。小形機のよ
うに低速で回転子径が小さくが界磁コイルの軸方
向の長さが短かいものにおいては、遠心力及び界
磁コイルの熱延びによる界磁コイル支持板への過
大な荷重は作用しないため、従来構造で問題はな
かつた。
The conventional field coil support device was developed in 1988.
As described in Japanese Patent No. 14648, the structure is such that a mechanical strength reinforcing material for the field coil support plate is not used in the bolt tightening part. In small machines that operate at low speeds, have a small rotor diameter, and have a short axial length of the field coil, excessive loads on the field coil support plate due to centrifugal force and hot elongation of the field coil can be avoided. Since this does not work, there was no problem with the conventional structure.
しかし、軸方向に長大かつ高速回転の界磁コイ
ルでは、界磁コイル導体が過度の冷熱サイクルに
より伸び及び収縮を繰り返し、それに加え過大の
遠心力により界磁コイル支持装置との当り面に大
きな力が加わることになり、界磁コイル支持板に
はボルト締付部を支点として過大な曲げ応力が発
生し、界磁コイル支持板を変形させ、ついには割
れ等を発生させる欠点があつた。 However, in a field coil that is long in the axial direction and rotates at high speed, the field coil conductor repeatedly expands and contracts due to excessive cooling and heating cycles, and in addition, excessive centrifugal force causes a large force on the contact surface with the field coil support device. As a result, excessive bending stress is generated in the field coil support plate using the bolt tightening portion as a fulcrum, deforming the field coil support plate, and eventually causing cracks and the like.
本発明の目的は、軸方向に長大かつ高速回転の
界磁コイルから発生する力によつて、界磁コイル
支持板に作用する曲げ荷重の支点を機械強度最弱
点部分から高強度点部分に移した界磁コイル支持
装置を提供することにある。
An object of the present invention is to shift the fulcrum of the bending load acting on the field coil support plate from the weakest point of mechanical strength to the high strength point by the force generated from the field coil that is long in the axial direction and rotates at high speed. An object of the present invention is to provide a field coil support device.
以下発明の概要を第４図を用い説明する。 The outline of the invention will be explained below with reference to FIG.
先述した様に、軸方向に長大かつ高速回転の界
磁コイルでは、過度の冷熱サイクル及び過大な遠
心力により、界磁コイル支持板に対し大きな荷重
が加えられることになる。設計方針として、界磁
コイル導体の熱延びを考慮に入れ、界磁コイル導
体が界磁コイル支持板との当り面を軸方向にスラ
イド出来る構造となつている。熱延びに対して
は、本方式で問題はない。しかし、高速回転によ
り界磁コイルに生じる過大な遠心力によつて、界
磁コイルは、界磁コイル支持板の側面Ｄ面に押し
付けられ、この状態で界磁コイル導体に熱延びが
生じた場合、界磁コイル支持板には、過大な圧縮
力Ｑとボルト締付部１１を支点とした曲げ荷重Ｐ
が加わる。この場合ボルト強固に締付けられてい
るため、ボルト変形は少なく、界磁コイル支持板
は、一点鎖線の如く変形する。界磁コイル支持板
の最弱点部となる箇所は、締付ボルト用の穴部分
であり、肉厚の薄い部分から割れを生じる。この
現象は、最も単純な構造のボルト一本締構造にお
いて顕著である。ボルト一本締構造の場合、一本
のボルトで界磁コイル支持板を支えなければなら
ないため、機械強度の強い径の大きなボルトが必
要となり、肉厚の薄い部分ができてしまう。また
近年、界磁コイル支持板の軽量化が計られ、従来
の金属製のもの、例えばアルミニウムから、ガラ
ス繊維強化プラスチツク（以下FRPと呼ぶ）製
のものが用いられるようになつた。しかし、
FRPは、荷重方向により機械的強度が異なると
いう欠点を有しており、沿層方向からの荷重Ｑに
対し層間剥離を生じ易い。従つて、径方向に積層
されたFRPを界磁コイル支持板として使用する
のが最適であるが、一般に、積層方向の厚みとし
て90mm程度が製造限界とされており、それ以上の
厚みが要求される界磁コイル支持板においては、
軸方向に積層されたFRPを使用せざるを得ない。
このため、締付ボルト用穴部の薄肉部に加わる圧
縮力Ｑによつて層間剥離を生じ、同時に曲げ荷重
Ｐにより割れを生じ、破壊に到る。 As mentioned above, in a field coil that is long in the axial direction and rotates at high speed, a large load is applied to the field coil support plate due to excessive cooling/heating cycles and excessive centrifugal force. The design policy is such that the field coil conductor can slide in the axial direction on the contact surface with the field coil support plate, taking into consideration the thermal elongation of the field coil conductor. There is no problem with this method regarding hot stretching. However, due to the excessive centrifugal force generated in the field coil due to high-speed rotation, the field coil is pressed against the side surface D of the field coil support plate, and in this state, hot elongation occurs in the field coil conductor. , the field coil support plate is subjected to an excessive compressive force Q and a bending load P with the bolt tightening portion 11 as a fulcrum.
is added. In this case, since the bolts are firmly tightened, there is little deformation of the bolts, and the field coil support plate deforms as shown by the dashed line. The weakest point of the field coil support plate is the hole for the tightening bolt, and cracks occur from the thin wall. This phenomenon is remarkable in the simplest one-bolt structure. In the case of a one-bolt tightening structure, the field coil support plate must be supported by one bolt, which requires a large-diameter bolt with strong mechanical strength, resulting in a thin portion. Furthermore, in recent years, efforts have been made to reduce the weight of field coil support plates, and instead of conventional metal plates, such as aluminum, plates made of glass fiber reinforced plastic (hereinafter referred to as FRP) have come to be used. but,
FRP has the disadvantage that its mechanical strength varies depending on the load direction, and delamination is likely to occur under load Q from the longitudinal direction. Therefore, it is optimal to use FRP laminated in the radial direction as the field coil support plate, but generally, the manufacturing limit for the thickness in the lamination direction is about 90 mm, and a thicker layer is required. In the field coil support plate,
It is necessary to use FRP laminated in the axial direction.
Therefore, the compression force Q applied to the thin wall portion of the tightening bolt hole causes delamination, and at the same time, the bending load P causes cracking, leading to destruction.
これらの現象を防止するためには、最弱点部で
ある締付ボルト用の穴部が荷重の支点とならない
構造をとる必要がある。そのために、従来から行
われている界磁コイル支持板の上面Ａ面から締付
ボルトにより荷重を与える方式に加え、両側面Ｂ
面、Ｃ面からも支持する方法が得策である。この
両側面Ｂ面、Ｃ面からの支持が加わることによ
り、荷重の支点を締付ボルト部から、強度的に強
い点に移動させることが出来る。すなわち、第１
図に示す厚ワツシヤーの両端につばを付けたつば
付厚ワツシヤ１０を締付けボルト部に使用するこ
とにより、両端のつばの押さえによつて界磁コイ
ル支持板に加わる荷重の支点を移動させ、機械強
度の強い界磁コイル支持装置を提供することがで
きる。ここで重要なことは、両端のつば１０ａ，
１０ｂは、側面Ｂ面、Ｃ面に密着させておく必要
があり、またつばの長さＷは、締付ボルト用穴径
の３倍以上とるのが妥当である。 In order to prevent these phenomena, it is necessary to adopt a structure in which the hole for the tightening bolt, which is the weakest point, does not serve as a fulcrum for the load. For this purpose, in addition to the conventional method of applying a load using tightening bolts from the top surface A of the field coil support plate,
It is advisable to support it from both the plane and the C plane. By adding support from both side surfaces B and C, the fulcrum of the load can be moved from the tightening bolt portion to a point with strong strength. That is, the first
By using the flanged thick washer 10 shown in the figure with flanges on both ends for the tightening bolt, the fulcrum of the load applied to the field coil support plate is moved by pressing the flanges at both ends, and the machine A strong field coil support device can be provided. What is important here is that the ribs 10a at both ends,
10b needs to be in close contact with the side surfaces B and C, and it is appropriate that the length W of the collar is at least three times the diameter of the tightening bolt hole.
以下、本発明の一実施例を第１図〜第３図によ
り説明する。１は界磁磁極を示す。界磁磁極は鉄
心２と界磁コイル４を支持し、遠心力による界磁
コイルの逸脱を押える磁極片３とからなる。界磁
コイル４は巻回導体を層間絶縁を介して固着絶縁
し、運転中は一体支持される。
An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. 1 indicates a field magnetic pole. The field magnetic pole consists of an iron core 2 and a magnetic pole piece 3 that supports the field coil 4 and prevents the field coil from slipping out due to centrifugal force. The field coil 4 securely insulates the wound conductor through interlayer insulation, and is integrally supported during operation.
本実施例においては界磁コイルの周方向に対向
する側面部には、軸方向に積層されたFRP製界
磁コイル支持板６を設けている。該界磁コイル支
持板６には締付ボルト９を通す、ボルト穴が沿層
方向に貫通しており、締付ボルト９の一本により
ロータリム１１に固定するボルト一本締構造とな
つている。界磁コイル支持板６のボルト締付部に
は、厚ワツシヤの両端を折り曲げ、つば１０ａ，
１０ｂを形成した本発明のつば付厚ワツシヤ１０
が、界磁コイル支持板６の積層方向の両面に密着
するように取付けられている。そのさらに上面に
は、締付ボルト９のゆるみ防止として、ロツクワ
ツシヤ７が取付けてある。 In this embodiment, a field coil support plate 6 made of FRP and laminated in the axial direction is provided on the side surface portion facing the field coil in the circumferential direction. The field coil support plate 6 has a bolt hole extending in the longitudinal direction through which a tightening bolt 9 is passed, and has a single-bolt tightening structure in which it is fixed to the rotor rim 11 by one tightening bolt 9. . At the bolt tightening part of the field coil support plate 6, both ends of a thick washer are bent and a collar 10a,
The thick washer 10 with flange of the present invention formed with 10b
are attached so as to be in close contact with both sides of the field coil support plate 6 in the stacking direction. Furthermore, a locking washer 7 is attached to the upper surface of the bolt 9 to prevent the tightening bolt 9 from loosening.
上記実施例としてFRP製の界磁コイル支持板
を用いたが、金属製の界磁コイル支持板を用いて
も良い。つば付厚ワツシヤの材質としては、界磁
コイル支持板より機械強度の強いものでなければ
ならない。 Although a field coil support plate made of FRP was used in the above embodiment, a field coil support plate made of metal may also be used. The material of the thick washer with the flange must have higher mechanical strength than the field coil support plate.
以上詳述したように本発明によれば、界磁コイ
ル支持板に加わる荷重の支点を最弱点部から機械
強度の強い点に移動させることが出来るので、界
磁コイル支持板の割れによる破壊を防ぐ効果があ
る。
As detailed above, according to the present invention, it is possible to move the fulcrum of the load applied to the field coil support plate from the weakest point to a point with strong mechanical strength, thereby preventing damage due to cracks in the field coil support plate. It has a preventive effect.
第１図は本発明の界磁コイル支持装置の見取り
図、第２図は本発明の取付状態を示す上面図、第
３図は本発明の取付状態を示す正面図、第４図は
従来構造の界磁コイル支持装置の見取図である。
１……界磁極、４……界磁コイル、６……界磁
コイル支持板、７……ロツクワツシヤ、９……締
付ボルト、１０……つば付厚ワツシヤ、１０ａ，
１０ｂ……つば、７ｂ……ロツクワツシヤの折り
曲げ部。
Fig. 1 is a sketch of the field coil support device of the present invention, Fig. 2 is a top view showing the installed state of the present invention, Fig. 3 is a front view showing the installed state of the present invention, and Fig. 4 is a conventional structure. FIG. 3 is a sketch of a field coil support device. 1... Field pole, 4... Field coil, 6... Field coil support plate, 7... Lock washer, 9... Tightening bolt, 10... Thick washer with flange, 10a,
10b...Brim, 7b...Bending part of lock cloth.
Claims (1)
られた複数の磁極と、この磁極に積層状態で巻回
されたコイルと、上記磁極相互間に配置され、隣
接する２個のコイルを押さえる界磁コイル支持板
を有するものにおいて、上記界磁コイル支持板の
上面及び両側面を被うワツシヤーを設け、上面を
締付部で締付けて両側面をワツシヤーで支持する
ことを特徴とする界磁コイル支持板装置。 ２ 上記界磁コイル支持板は複数の支持板を積層
した積層支持板の積層方向両側面をワツシヤーで
支持することを特徴とする特許請求の範囲第１項
記載の界磁コイル支持装置。[Scope of Claims] 1. A plurality of magnetic poles protruding from the outer periphery of the rotor shaft with a peripheral wall therebetween, a coil wound around the magnetic poles in a laminated state, and a plurality of coils arranged between the magnetic poles and adjacent to each other. In a device having a field coil support plate that holds two coils, a washer is provided to cover the upper surface and both side surfaces of the field coil support plate, the upper surface is tightened with a tightening part, and both sides are supported by the washer. A field coil support plate device characterized by: 2. The field coil support device according to claim 1, wherein the field coil support plate supports both side surfaces in the stacking direction of a laminated support plate in which a plurality of support plates are laminated with washers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5845385A JPS61218341A (en) | 1985-03-25 | 1985-03-25 | Field coil supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5845385A JPS61218341A (en) | 1985-03-25 | 1985-03-25 | Field coil supporting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61218341A JPS61218341A (en) | 1986-09-27 |
| JPH0568180B2 true JPH0568180B2 (en) | 1993-09-28 |
Family
ID=13084842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5845385A Granted JPS61218341A (en) | 1985-03-25 | 1985-03-25 | Field coil supporting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61218341A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4879617A (en) * | 1988-03-25 | 1989-11-07 | Rigidyne Corporation | Actuator assembly for hard disk drives |
-
1985
- 1985-03-25 JP JP5845385A patent/JPS61218341A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61218341A (en) | 1986-09-27 |
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