JP2000083333A - Rotating electric machine - Google Patents
Rotating electric machineInfo
- Publication number
- JP2000083333A JP2000083333A JP10250231A JP25023198A JP2000083333A JP 2000083333 A JP2000083333 A JP 2000083333A JP 10250231 A JP10250231 A JP 10250231A JP 25023198 A JP25023198 A JP 25023198A JP 2000083333 A JP2000083333 A JP 2000083333A
- Authority
- JP
- Japan
- Prior art keywords
- stator
- core
- electric machine
- rotating electric
- rotor
- 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
Landscapes
- Motor Or Generator Frames (AREA)
- Manufacture Of Motors, Generators (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、回転電機の固定子
又は固定子枠の支持に関する。[0001] The present invention relates to the support of a stator or a stator frame of a rotating electric machine.
【０００２】[0002]
【従来の技術】従来の回転電機の一例を図１と図８及び
図９を参照して説明する。図１は回転電機の上部断面図
を含む正面図で従来と本発明とは同じである。図８は固
定子と回転子の要部を示す側断面図、図９は固定子鉄心
と回転子の縦断面図である。図１において、筒状で両端
にインロー１ａを有する固定子枠１の内部には、固定子
鉄心２に固定子巻線３が収納されて成る固定子４が圧入
され、固定子４は鋲４ａによって固定子枠１に対して廻
り止めされている。又、固定子枠１の両端には前記イン
ロー１ａを介して軸受ブラケット５が嵌着されている。
前記固定子４の内周側には空隙12を介して回転子鉄心10
に嵌合された回転軸11とで成る回転子９が配設され、こ
の回転子９は両端に嵌合された軸受７を介して前記軸受
ブラケット５で回転自在に支承されている。2. Description of the Related Art An example of a conventional rotating electric machine will be described with reference to FIGS. FIG. 1 is a front view including an upper cross-sectional view of a rotating electric machine, which is the same as the conventional and the present invention. FIG. 8 is a side sectional view showing a main part of the stator and the rotor, and FIG. 9 is a longitudinal sectional view of the stator core and the rotor. 1, a stator 4 having a stator core 2 and a stator winding 3 housed therein is press-fitted into a cylindrical stator frame 1 having a spigot 1a at each end. The rotation is stopped by the stator frame 1. Bearing brackets 5 are fitted to both ends of the stator frame 1 through the spigot 1a.
A rotor core 10 is provided on the inner peripheral side of the stator 4 through a gap 12.
A rotor 9 comprising a rotating shaft 11 fitted on the rotor 9 is provided, and the rotor 9 is rotatably supported by the bearing bracket 5 via bearings 7 fitted on both ends.
【０００３】空隙12の空隙長δ調整は、インロー１ａで
固定子枠１と軸受ブラケット５の各々インロー１ａの嵌
合隙間分が調整代となり、固定子枠１への軸受ブラケッ
ト５の嵌合時に円周方向へ移動させて空隙長δを調整す
る。調整後は、固定子枠１と軸受ブラケット５を取付ボ
ルトを締付けて固定する。通常の組立状態では電磁力や
外力は発生していないから、回転子鉄心10及び回転軸11
は図９，10に示すように実線で示され空隙12の長さは空
隙長δである（尚、組立には若干の誤差があるので空隙
長δにもバラツキが存在している）。次に、回転電機の
据付け・運転時に回転軸11へ負荷荷重（矢印Ｆ）を受け
ると、回転軸11には荷重方向と反対方向に撓みζが発生
し、この撓みζに伴い回転子鉄心10が撓んで回転子鉄心
10及び回転軸11は夫々変形して破線で示され、空隙12の
長さは狭い空隙長δ1 と広い空隙長δ2 となり、軸方向
及び円周方向に不均衡となる。The gap length δ of the gap 12 is adjusted by adjusting the gap between the stator frame 1 and the bearing bracket 5 at the spigot 1 a at the spigot 1 a at the time of fitting the bearing bracket 5 to the stator frame 1. Move in the circumferential direction to adjust the gap length δ. After the adjustment, the stator frame 1 and the bearing bracket 5 are fixed by tightening the mounting bolts. Since no electromagnetic force or external force is generated in the normal assembly state, the rotor core 10 and the rotating shaft 11
9 and 10 are shown by solid lines, and the length of the gap 12 is the gap length δ (there is some variation in the gap length δ because there is a slight error in assembly). Next, when a load (arrow F) is applied to the rotating shaft 11 during installation and operation of the rotating electric machine, the rotating shaft 11 bends in a direction opposite to the load direction, and the bending ζ causes the rotor core 10 to move. The rotor core is bent
10 and the rotating shaft 11 are each deformed and shown by a broken line, and the length of the gap 12 becomes a narrow gap length δ1 and a wide gap length δ2, and becomes unbalanced in the axial direction and the circumferential direction.
【０００４】[0004]
【発明が解決しようとする課題】このような回転電機に
は次のような課題がある。 (1).回転電機の空隙12に偏心があると、運転時に狭い空
隙長δ1 側に回転子９を引き寄せる磁気吸引力が働いて
回転子９が撓んで偏心量が増加し、空隙長δが減少して
空隙長δ1 となり電磁振動・騒音が発生したり、空隙12
の接触（空隙擦り）発生により回転電機の運転不能の要
因になる。これを回避する為に、空隙長δを大きくする
と励磁電流が増加して種々の電気特性が悪化する。又、
機器が大形化する。However, such a rotating electric machine has the following problems. (1). If the gap 12 of the rotating electric machine is eccentric, the magnetic attraction force that draws the rotor 9 toward the narrow gap length δ1 during operation acts on the rotor 9 to flex the rotor 9 and increase the amount of eccentricity. It decreases to the air gap length δ1, causing electromagnetic vibration and noise, and
Contact (gap rubbing) causes the rotating electric machine to become inoperable. If the air gap length δ is increased to avoid this, the exciting current increases and various electrical characteristics deteriorate. or,
Equipment becomes larger.
【０００５】(2).回転軸11の撓みζは、一例として次式
で表される。 ζ＝（Ｗ・Ｌ3 ）／（４８・Ｅ・Ｉ） Ｗ：回転子自重、 Ｅ：回転軸の縦弾性係数、 Ｌ：回転子支持点距離、 Ｉ：断面二次モーメント、 Ｉ＝π・Ｄ4 ／６４ Ｄ：回転軸直径 回転軸11の撓みζを抑制する為、回転軸11の径（Ｄ）を
大きくしたり、回転電機の大形化が必要であった。又、
撓みζの他の抑制法として回転子９の支持点距離（Ｌ）
短縮や支持点増加が考えられるが、回転電機の構造への
制約条件・部品点数の増加などの課題がある。(2) The deflection の of the rotating shaft 11 is expressed by the following equation as an example. ζ = (W · L 3 ) / (48 · E · I) W: rotor's own weight, E: longitudinal elastic modulus of the rotating shaft, L: rotor supporting point distance, I: second moment of area, I = π · D 4/64 D: to suppress the deflection ζ of the rotary shaft diameter rotary shaft 11, or by increasing the diameter of the rotating shaft 11 (D), upsizing of the electric rotating machine is required. or,
As another method for suppressing the bending ζ, the distance between the support points of the rotor 9 (L)
Although shortening and an increase in the number of support points are conceivable, there are problems such as restrictions on the structure of the rotating electric machine and an increase in the number of parts.
【０００６】(3).空隙長δの不均衡による電磁振動・騒
音の発生 (4).回転電機の据付け後に上記現象が発生すると、空隙
長δの調整や振動共振点の回避が困難であり、また固定
子枠１や固定子４の新製や高剛性のものを要して高価格
化となる。(3). Generation of electromagnetic vibrations and noise due to imbalance of the gap length δ (4). If the above phenomenon occurs after installation of the rotating electric machine, it is difficult to adjust the gap length δ and avoid the vibration resonance point. In addition, the stator frame 1 and the stator 4 need to be newly manufactured or have high rigidity, resulting in a high price.
【０００７】(5).また組立再調整には多大な組立工数を
要する。 本発明は上記事情に鑑みて成されたもので、回転電機の
据付・運転時に回転軸の撓みが発生しても、空隙擦りや
空隙長の不均衡などを防止する回転電機を提供すること
を目的とする。(5) Further, re-assembly of the assembly requires a large number of assembly steps. The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a rotating electric machine that prevents gap rubbing and gap length imbalance even when the rotating shaft is bent during installation and operation of the rotating electric machine. Aim.
【０００８】[0008]
【課題を解決するための手段】本発明における回転電機
は、請求項１では、筒状で両端にインローを有する固定
子枠と、この固定子枠の両端に嵌着された軸受ブラケッ
トと、前記固定子枠内に配設された固定子鉄心に固定子
巻線が収納されてなる固定子と、この固定子の内周側に
空隙を介して配設された回転子鉄心に嵌合された回転軸
とで成る回転子と、この回転子が両端に嵌合された軸受
を介して前記軸受ブラケットで回転自在に支承されて成
る回転電機において、回転電機が相手負荷に据付前の前
記空隙は前記固定子鉄心及び回転子鉄心の中心を夫々偏
心方向と偏心量として設定し、偏心方向は回転電機の回
転軸が据付・運転時に受ける負荷荷重方向と同一方向と
し、偏心量は前記負荷荷重により発生する回転軸及び回
転子鉄心の撓み量と同等としたことを特徴とする。According to a first aspect of the present invention, there is provided a rotating electric machine, comprising: a stator frame having a cylindrical shape and a spigot at both ends; a bearing bracket fitted to both ends of the stator frame; A stator in which a stator winding is housed in a stator core disposed in a stator frame, and a rotor core disposed through an air gap on the inner peripheral side of the stator are fitted. In a rotating electric machine having a rotor composed of a rotating shaft and the rotor rotatably supported by the bearing bracket via bearings fitted at both ends, the gap before the rotating electric machine is installed on a mating load is: The center of the stator core and the center of the rotor core are set as the eccentric direction and the eccentric amount, respectively, the eccentric direction is the same direction as the load direction that the rotating shaft of the rotating electric machine receives during installation and operation, and the eccentric amount is determined by the applied load. The amount of deflection of the rotating shaft and rotor core that occurs Characterized in that it was equivalent.
【０００９】この構成により、負荷荷重に影響なく円滑
に運転できる。軸撓みを抑制するので大幅な回転軸径の
増加を要せず回転電機が小形化され、構造上の制約条件
がなくなり部品点数が削減できる。特性面では、偏心高
調波の発生を防止できて電磁振動・騒音が抑制できると
共に、空隙長を極力小さく設定できるので力率向上・消
費電力削減ができる。With this configuration, the operation can be performed smoothly without affecting the applied load. Since the shaft deflection is suppressed, the rotating electric machine is reduced in size without requiring a large increase in the rotating shaft diameter, and there are no structural restrictions and the number of parts can be reduced. In terms of characteristics, generation of eccentric harmonics can be prevented, electromagnetic vibration and noise can be suppressed, and the gap length can be set as small as possible, so that power factor can be improved and power consumption can be reduced.
【００１０】請求項２では、前記固定子鉄心の外周に負
荷荷重並びに回転子の撓み方向と平行となる凹部を複数
個設け、この凹部にコア止棒を配設し固定子枠に穿設し
た複数個の捩子穴から該コア止棒をボルト締めにより固
定する。ボルトの回転量で回転電機の外被から空隙の空
隙長を調整でき空隙長調整が簡素化できる。そして、工
場での出荷試験または無負荷状態での試運転などの負荷
荷重が回転軸に作用しない場合は、固定子鉄心と回転子
鉄心の空隙長を円周方向で均等となるようにして、回転
電機の使用状況により空隙設定を自在に調整できる。According to a second aspect of the present invention, a plurality of recesses are provided on the outer periphery of the stator core in parallel with the load and the bending direction of the rotor. The core stopper bar is fixed from a plurality of screw holes by bolting. The gap length of the gap from the jacket of the rotating electric machine can be adjusted by the rotation amount of the bolt, and the gap length adjustment can be simplified. When a load, such as a factory test or a test run with no load, does not act on the rotating shaft, the gap length between the stator core and the rotor core is made uniform in the circumferential direction, The air gap setting can be freely adjusted according to the usage state of the electric machine.
【００１１】請求項３では、前記固定子鉄心の外周形状
を多角形とし、この多角形の各平面にコア止板を配設し
固定子枠に穿設した複数個の捩子穴から該コア止板をボ
ルト締めにより固定する。空隙長の調整方向を多方向と
することができるので、請求項２よりも使用目的が拡大
する。According to a third aspect of the present invention, the outer peripheral shape of the stator core is a polygon, and a core stopper plate is disposed on each plane of the polygon, and the core is formed from a plurality of screw holes formed in the stator frame. Fix the stop plate by bolting. Since the adjustment direction of the gap length can be made in multiple directions, the purpose of use is expanded as compared with the second aspect.
【００１２】請求項４では、前記固定子鉄心の外周形状
を円形部を含む多角形とし、この多角形の各平面には層
間に板バネを挟設した２層構成の２層コア止板を配設し
て固定子枠に穿設した複数個の捩子穴から該２層コア止
板をボルト締めで固定し、前記板バネの圧力変化により
固定子鉄心と固定子枠の固有振動数を変化させる。回転
電機を据付け後に振動・騒音の増大が発生した場合、回
転電機の固有振動数を変化させて相手機械との振動共振
点の回避を行うことができる。According to a fourth aspect of the present invention, the outer peripheral shape of the stator core is a polygon including a circular portion, and a two-layer core stopper plate having a two-layer structure with a leaf spring interposed between layers is provided on each plane of the polygon. The two-layer core stopper plate is fixed with bolts from a plurality of screw holes provided and drilled in the stator frame, and the natural frequency of the stator core and the stator frame is determined by the pressure change of the leaf spring. Change. When vibration and noise increase after the rotary electric machine is installed, the natural frequency of the rotary electric machine can be changed to avoid a vibration resonance point with the counterpart machine.
【００１３】請求項５では、前記固定子鉄心の外周形状
を円形部を含む多角形として、この多角形の各平面には
１辺が傾斜状となった傾斜コア止板を配設し、この傾斜
コア止板を配設する固定子枠の相対位置は固定子鉄心端
部から中央部へ径小となる傾斜部を設け、該傾斜部に相
互の傾斜方向が相対するように前記傾斜コア止板を位置
させ固定子枠に穿設した複数個の捩子穴から該傾斜コア
止板をボルト締めにより固定し、固定子枠外部からボル
ト締めにより偏心量を調整して空隙長さを調整する。傾
斜コア止板がボルト先端で押されて固定子枠の傾斜部に
沿ってスライドすることで、固定子鉄心が垂直方向へス
ライドするので、固定子鉄心・固定子枠と傾斜コア止板
との設置面積を変化させて、固定子鉄心と固定子枠の固
有振動数を変化させることができる。According to a fifth aspect of the present invention, an outer peripheral shape of the stator core is a polygon including a circular portion, and an inclined core stopper plate having one side inclined on each plane of the polygon is provided. The relative position of the stator frame on which the inclined core stopper plate is disposed is provided with an inclined portion having a smaller diameter from the end of the stator core to the center, and the inclined core stopper is positioned so that the inclined directions are opposite to each other. Position the plate, fix the inclined core stopper plate from the plurality of screw holes drilled in the stator frame by bolting, and adjust the amount of eccentricity by bolting from outside the stator frame to adjust the gap length. . When the inclined core stopper plate is pushed by the bolt tip and slides along the inclined part of the stator frame, the stator core slides vertically, so that the stator core / stator frame and the inclined core stopper plate The natural frequency of the stator core and the stator frame can be changed by changing the installation area.
【００１４】[0014]
【発明の実施の形態】以下本発明の第１実施例を図１乃
至図３を参照して説明する。図２は固定子と回転子の要
部を示す側断面図、図３は固定子鉄心と回転子の縦断面
図である。第１実施例の構造は従来で説明の図１と同じ
であり、異なるのは組立時の空隙長の調整でこれを説明
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. FIG. 2 is a side sectional view showing a main part of the stator and the rotor, and FIG. 3 is a longitudinal sectional view of the stator core and the rotor. The structure of the first embodiment is the same as that of FIG. 1 described in the related art, and the difference is the adjustment of the gap length during assembly.
【００１５】図２及び図３において、固定子鉄心２の支
持面中心はインローチ１ａの中心に対して、後述する偏
心内容を含んで実線で示し、この時の空隙12Ａは回転子
９の上側と下側で夫々異なる空隙長δ11，δ12となって
いる。即ち、偏心方向は回転電機の回転軸11が据付・運
転時に受ける負荷荷重の方向（矢印Ｆ）と同一方向にす
る。偏心量は前記負荷荷重により発生する回転軸11及び
回転子鉄心10の撓み量と同等に設定する。In FIGS. 2 and 3, the center of the support surface of the stator core 2 is indicated by a solid line with respect to the center of the inroach 1a and includes the eccentric content described later. The lower side has different gap lengths δ11 and δ12, respectively. That is, the eccentric direction is the same as the direction (arrow F) of the load applied to the rotating shaft 11 of the rotating electric machine during installation and operation. The amount of eccentricity is set equal to the amount of deflection of the rotating shaft 11 and the rotor core 10 caused by the load.
【００１６】この状態で回転電機を据付・運転状態に入
ると、回転軸11に矢印Ｆ方向の負荷荷重が掛かり回転軸
11には荷重方向と反対方向に撓みζが発生する。この撓
みζに伴い破線で示すように回転子鉄心10が撓み、空隙
12Ａは回転子９の上側と下側で固定子鉄心２内径に対し
て夫々空隙長δ111,δ121 と変り、空隙長δ111 と空隙
長δ121 は略等しく円周方向に均等となる。この結果、
負荷荷重に影響なく回転電機が円滑に運転できる。In this state, when the rotating electric machine is installed and operated, a load is applied to the rotating shaft 11 in the direction of arrow F, and
In FIG. 11, a bending ζ occurs in the direction opposite to the load direction. The rotor core 10 bends as shown by the broken line due to this bending ζ, and the air gap
12A is different from the inner diameter of the stator core 2 at the upper side and the lower side of the rotor 9 to the gap lengths δ111 and δ121, respectively, and the gap length δ111 and the gap length δ121 are substantially equal in the circumferential direction. As a result,
The rotating electric machine can operate smoothly without being affected by the applied load.
【００１７】すると、従来問題にしていた、回転軸11の
撓みζを抑制する為に行う断面二次モーメント（Ｉ）を
大きくするか、若しくは回転子支持点距離（Ｌ）を小さ
くする等が解決される。これは、回転電機が回転軸11に
撓みζを発生した状態で円滑に運転できるので、回転軸
11径（Ｄ）は大幅な増加がなく回転電機が小形化でき
る。又、回転子９の支持点短縮（Ｌ）や支持点の増加も
不要となり、回転電機の構造上の制約条件がなくなり部
品点数が削減できる。This solves the conventional problem of increasing the second moment of area (I) for suppressing the bending の of the rotating shaft 11 or decreasing the rotor support point distance (L). Is done. This is because the rotating electric machine can be smoothly operated in a state where the rotating shaft 11 is bent.
The diameter (D) of the rotating electric machine can be reduced without significant increase. In addition, it is not necessary to shorten the support point (L) of the rotor 9 or increase the support point, so that there are no restrictions on the structure of the rotating electric machine, and the number of parts can be reduced.
【００１８】特性面では、運転時に空隙12Ａの空隙長δ
111,δ121 は均等となるので、偏心高調波の発生を防止
でき電磁振動・騒音が抑制できる。又、空隙12Ａの空隙
長δ111,δ121 は極力小さく設定できるから、力率の向
上・消費電力削減などができる。そして、円滑な運転と
特性向上により回転電機の長寿命化が可能となる。In terms of characteristics, the gap length δ of the gap 12A during operation is
Since 111 and δ121 are equal, generation of eccentric harmonics can be prevented, and electromagnetic vibration and noise can be suppressed. Further, since the gap lengths δ111 and δ121 of the gap 12A can be set as small as possible, it is possible to improve the power factor and reduce power consumption. In addition, the life of the rotating electric machine can be prolonged by smooth operation and improved characteristics.
【００１９】（第２実施例）第２実施例を図４を参照し
て説明する。第１実施例と異なるのは、固定子鉄心２Ａ
の外周に凹部２ａを設ける。この凹部２ａは負荷荷重並
びに回転軸11の撓みζ方向と平行になるようにスライド
面を持ち、凹部２ａに相対するように負荷荷重並びに回
転軸11の撓みζ方向にスライド可能なコア止棒21を配置
する。このコア止棒21にて固定子鉄心２Ａの固定子枠20
Ａに対する廻り止めを行う。配置部においては、固定子
枠20Ａ内周と固定子鉄心２Ａ外周との間に隙間を設け、
固定子枠20Ａにはコア止棒21と相対する位置で且つ固定
子枠20Ａ外周に複数個の捩子穴22を設けてボルト23を配
置する。ボルト23先端にて前記コア止棒21を押付け、更
にコア止棒21が固定子鉄心２Ａを押すことにより、負荷
荷重並びに回転軸11の撓みζ方向に固定子鉄心２Ａが固
定子枠20Ａ内周と固定子鉄心２Ａ外周間の隙間分スライ
ド可能となる。回転電機の外部から前記ボルト23のねじ
込み量を調整することで、固定子鉄心２Ａの回転子９に
対する偏心量即ち空隙長δを調整する。(Second Embodiment) A second embodiment will be described with reference to FIG. The difference from the first embodiment is that the stator core 2A
Is provided with a concave portion 2a on the outer periphery of. The recess 2a has a sliding surface so as to be parallel to the applied load and the bending direction of the rotating shaft 11, and the core stop bar 21 slidable in the applied load and the bending of the rotating shaft 11 so as to face the recess 2a. Place. The core stopper pin 21 is used to fix the stator frame 20 of the stator core 2A.
The rotation stop for A is performed. In the arrangement portion, a gap is provided between the inner periphery of the stator frame 20A and the outer periphery of the stator core 2A,
A plurality of screw holes 22 are provided in the stator frame 20A at a position facing the core stop bar 21 and on the outer periphery of the stator frame 20A, and bolts 23 are arranged. The core stopper 21 is pressed by the tip of the bolt 23, and the core stopper 21 further presses the stator core 2A. And the gap between the outer periphery of the stator core 2A and the stator core 2A. The amount of eccentricity of the stator core 2A with respect to the rotor 9, that is, the gap length δ is adjusted by adjusting the amount of screwing of the bolt 23 from outside the rotating electric machine.
【００２０】（第３実施例）第３実施例を図５を参照し
て説明する。第１実施例と異なるのは、固定子鉄心２Ｂ
の外周形状が平面部を有する多角形で、該平面部と固定
子枠20Ｂとの空間にコア止板24を配置し、固定子枠20Ｂ
側からのボルト26締めで固定子鉄心２Ｂは固定子枠20Ｂ
に支持され、コア止板24で固定子鉄心２Ｂは廻り止めさ
れる。固定子枠20Ｂには前記コア止板24と相対する位置
で且つ該外周に複数の捩子穴25を設けてボルト26を配置
する。ボルト26先端にて前記コア止板24を押し付け、更
にコア止板24が固定子鉄心２Ｂを押すことにより固定子
鉄心２Ｂがスライドする。回転電機の組立時または組立
後に、前記ボルト26のねじ込み量を調整することによ
り、固定子鉄心２Ａの回転子９に対する偏心量即ち空隙
長δを回転電機の外部より調整する。(Third Embodiment) A third embodiment will be described with reference to FIG. The difference from the first embodiment is that the stator core 2B
The outer peripheral shape is a polygon having a flat portion, and a core stopper plate 24 is arranged in a space between the flat portion and the stator frame 20B.
The stator core 2B is fixed to the stator frame 20B by tightening bolts 26 from the side.
The stator core 2B is prevented from rotating by the core stopper plate 24. A plurality of screw holes 25 are provided in the stator frame 20B at a position facing the core stopper plate 24 and on the outer periphery thereof, and bolts 26 are arranged. The core stopper plate 24 is pressed against the tip of the bolt 26, and the core stopper plate 24 further presses the stator core 2B, whereby the stator core 2B slides. During or after assembling the rotating electric machine, the amount of eccentricity of the stator core 2A with respect to the rotor 9, that is, the gap length δ is adjusted from outside the rotating electric machine by adjusting the screwing amount of the bolt 26.
【００２１】上記第２，第３実施例によれば、回転電機
の据付け後に前記のような空隙擦りや振動・騒音増大な
どが発生した場合、空隙長δの調整が可能である。又、
空隙長δの調整ができる為、工場での出荷試験または無
負荷状態での試運転などの負荷荷重が回転軸11に作用し
ない場合は、空隙長δを円周方向で均等となるように調
整する。このように、回転電機の使用状況により空隙長
設定を自在に調整することができ、更にボルト23，26の
ねじピッチが規格で規定されているので、ボルトを廻す
量で調整量を計算でき、空隙調整の簡素化ができる。第
３実施例では、空隙長δの調整方向を多方向とすること
ができ、第２実施例に対して使用目的の拡大が可能であ
る。According to the second and third embodiments, when the gap rubbing, vibration and noise increase occur after the rotating electric machine is installed, the gap length δ can be adjusted. or,
Since the gap length δ can be adjusted, if a load such as a shipping test at a factory or a test run in a no-load state does not act on the rotating shaft 11, the gap length δ is adjusted to be uniform in the circumferential direction. . In this way, the gap length can be freely adjusted according to the usage status of the rotating electric machine, and since the screw pitch of the bolts 23 and 26 is specified by the standard, the adjustment amount can be calculated by the amount of turning the bolt, The gap adjustment can be simplified. In the third embodiment, the adjustment direction of the gap length δ can be set in multiple directions, and the purpose of use can be expanded as compared with the second embodiment.
【００２２】（第４実施例）第４実施例を図６を参照し
て説明する。第１実施例と異なるのは、固定子鉄心２Ｃ
の外周形状を円形部を含んだ多角形とし、多角形の平面
部に対向するようコア止板27を配置する。固定子枠20Ｃ
に対する固定子鉄心２Ｃの廻り止めは２層コア止板27で
行う。２層コア止板27は２層構成で層間に板バネ28を配
置する。固定子枠20Ｃ内での固定子鉄心２Ｃの支持は、
前記円形部及び２層コア止板27で行う。固定子枠20Ｃに
は、２層コア止板27と相対する位置で且つ固定子枠20Ｃ
外周に複数の捩子穴29を設けてボルト30を配置する。こ
のボルト30先端で２層コア止板27の固定子枠20Ｃ接触側
を押付け、板バネ28を介して更に固定子枠20Ｃ接触側の
２層コア止板27が固定子鉄心２Ｃを押付ける。ボルト30
のねじ込み量を変化させることにより２層コア止板27の
層間の板バネ28の圧力が変化する。これで、固定子鉄心
２Ｃと固定子枠20Ｃの支持部ばね定数を変化させ、回転
電機の固有振動数を変化する。この実施例によれば、回
転電機を据付け後に振動・騒音増大となった時、回転電
機の固有振動数を変化させて相手機械との振動共振点の
回避を行うことができる。(Fourth Embodiment) A fourth embodiment will be described with reference to FIG. The difference from the first embodiment is that the stator core 2C
Has a polygonal shape including a circular portion, and the core stopper plate 27 is arranged so as to face the polygonal flat portion. Stator frame 20C
The rotation of the stator core 2 </ b> C is prevented by the two-layer core stopper plate 27. The two-layer core stopper plate 27 has a two-layer structure, and a leaf spring 28 is arranged between layers. The support of the stator core 2C in the stator frame 20C is as follows.
This is performed with the circular portion and the two-layer core stopper plate 27. The stator frame 20C is located at a position facing the two-layer core stopper plate 27 and the stator frame 20C.
A plurality of screw holes 29 are provided on the outer periphery, and bolts 30 are arranged. The ends of the bolts 30 press the two-layer core stopper 27 on the stator frame 20C contact side, and the two-layer core stopper 27 on the stator frame 20C contact side further presses the stator core 2C via the leaf spring 28. Bolt 30
, The pressure of the leaf spring 28 between the layers of the two-layer core stopper plate 27 changes. Thus, the spring constant of the support portion of the stator core 2C and the stator frame 20C is changed, and the natural frequency of the rotating electric machine is changed. According to this embodiment, when vibration and noise increase after the rotating electric machine is installed, the natural frequency of the rotating electric machine can be changed to avoid the vibration resonance point with the counterpart machine.
【００２３】（第５実施例）第５実施例を図７を参照し
て説明する。第１実施例と異なるのは、固定子鉄心２Ｄ
の外周形状を円形部を含んだ多角形とし、多角形の平面
部に対向するよう傾斜コア止板31を配置する。この傾斜
コア止板31の垂直方向形状は、固定子鉄心２Ｄの端部が
中央部より高くした傾斜状とする。固定子枠20Ｄの傾斜
コア止板31の取付部は、傾斜コア止板31の傾斜角と同傾
斜している。固定子枠20Ｄへの固定子鉄心２Ｄの支持と
廻り止めは傾斜コア止板31で行う。固定子枠20Ｄには、
傾斜コア止板31と相対する位置で且つ固定子鉄心２Ｄ端
面方向（軸方向）に少なくとも傾斜コア止板31と同数の
捩子穴32を設けて、その捩子穴32にボルト33を配置す
る。このボルト33先端で傾斜コア止板31を押し、傾斜コ
ア止板31が固定子枠20Ｄの傾斜面に沿ってスライドさせ
て、固定子鉄心２Ｄが垂直方向へスライドする。回転電
機の組立時または組立後に、前記ボルト33のねじ込み量
を調整することにより、固定子鉄心２Ｄの回転子鉄心10
に対する偏心量即ち空隙長δを回転電機外部より調整す
る。又、固定子鉄心２Ｄ・固定子枠20Ｄと傾斜コア止板
31の設置面積を変化させることにより、固定子鉄心２Ｄ
と固定子枠20Ｄの固有振動数が変化する。(Fifth Embodiment) A fifth embodiment will be described with reference to FIG. The difference from the first embodiment is that the stator core 2D
Has a polygonal shape including a circular portion, and the inclined core stopper plate 31 is disposed so as to face the polygonal flat portion. The vertical shape of the inclined core stopper plate 31 is an inclined shape in which the end of the stator core 2D is higher than the center. The mounting portion of the inclined core stopper plate 31 of the stator frame 20D has the same inclination as the inclination angle of the inclined core stopper plate 31. The support of the stator core 2D to the stator frame 20D and the rotation stop are performed by the inclined core stopper plate 31. In the stator frame 20D,
At least the same number of screw holes 32 as the inclined core stopper plate 31 are provided at a position facing the inclined core stopper plate 31 and in the end face direction (axial direction) of the stator core 2D, and the bolts 33 are arranged in the screw holes 32. . The inclined core stopper plate 31 is pushed by the tip of the bolt 33, the inclined core stopper plate 31 slides along the inclined surface of the stator frame 20D, and the stator core 2D slides in the vertical direction. By adjusting the screwing amount of the bolt 33 during or after assembling the rotating electric machine, the rotor core 10 of the stator core 2D can be adjusted.
Is adjusted from outside the rotating electric machine. Also, stator core 2D, stator frame 20D and inclined core stopper plate
By changing the installation area of 31, the stator core 2D
And the natural frequency of the stator frame 20D changes.
【００２４】第２乃至第４実施例と同様の作用効果が得
られると共に、空隙長δの調整は負荷荷重が回転軸11に
作用しない場合、固定子鉄心２Ｄと回転子鉄心10の空隙
長δを円周方向で均等になるようにする。このように回
転電機の使用状況により空隙設定を自在に調整すること
ができ、更にボルト33のねじピッチが規格で規定されて
いるので、ホルトの回転量で調整量を計算できて空隙調
整の簡素化ができる。The same operation and effect as those of the second to fourth embodiments can be obtained, and the gap length δ can be adjusted by adjusting the gap length δ between the stator core 2D and the rotor core 10 when the load does not act on the rotating shaft 11. In the circumferential direction. In this way, the air gap setting can be freely adjusted according to the usage status of the rotating electric machine, and the screw pitch of the bolt 33 is regulated by the standard. Can be
【００２５】尚、第２，３，５実施例は空隙長δの調整
が可能な為に、小径・細長の外形が必要とされる場合で
も空隙長δの均衡を維持できるので、固定子枠や固定子
側の撓みの発生を吸収することができ、必要な剛性量を
軽減することができる。In the second, third, and fifth embodiments, since the gap length δ can be adjusted, the balance of the gap length δ can be maintained even when a small-diameter and narrow outer shape is required. And the occurrence of deflection on the stator side can be absorbed, and the required rigidity can be reduced.
【００２６】[0026]
【発明の効果】以上のように本発明によれば、回転軸並
びに回転子鉄心に軸撓みが発生した時点で空隙の空隙長
が円周方向に均等となり、負荷荷重に影響なく円滑に運
転できる。又、回転電機の外被から空隙長調整が簡単に
できると共に小形化される。更に、固有振動数の調整も
簡単にできる。特性面では、運転特性が向上する。As described above, according to the present invention, when the shaft and the rotor core are bent, the lengths of the gaps become uniform in the circumferential direction, so that the operation can be performed smoothly without being affected by the applied load. . In addition, the gap length can be easily adjusted from the jacket of the rotating electric machine, and the size can be reduced. Further, the adjustment of the natural frequency can be easily performed. In terms of characteristics, driving characteristics are improved.
【図１】回転電機の上半分断面を含む縦断面図、FIG. 1 is a longitudinal sectional view including an upper half section of a rotating electric machine,
【図２】固定子鉄心・回転子鉄心・回転軸の偏心状態
図、FIG. 2 is an eccentric state diagram of a stator core, a rotor core, and a rotating shaft,
【図３】図２の空隙状態図、FIG. 3 is a view showing a state of a gap in FIG. 2;
【図４】本発明の第２実施例を示し、（ａ）は図１相当
図で、（ｂ）は（ａ）図のＡ−Ａ断面図、4A and 4B show a second embodiment of the present invention, wherein FIG. 4A is a view corresponding to FIG. 1, FIG. 4B is a sectional view taken along line AA of FIG.
【図５】本発明の第３実施例を示し、（ａ）は図１相当
図で、（ｂ）は（ａ）図のＢ−Ｂ断面図、5A and 5B show a third embodiment of the present invention, wherein FIG. 5A is a view corresponding to FIG. 1, FIG. 5B is a sectional view taken along line BB of FIG.
【図６】本発明の第３実施例を示し、（ａ）は図１相当
図で、（ｂ）は（ａ）図のＣ−Ｃ断面図、6A and 6B show a third embodiment of the present invention, wherein FIG. 6A is a view corresponding to FIG. 1, FIG.
【図７】本発明の第４実施例を示す図１相当図、FIG. 7 is a view corresponding to FIG. 1 showing a fourth embodiment of the present invention,
【図８】従来の図２相当図、FIG. 8 is a diagram corresponding to FIG.
【図９】従来の図３相当図。FIG. 9 is a diagram corresponding to FIG. 3 of the related art.
１，20，20Ａ，20Ｂ，20Ｃ，20Ｄ…固定子枠、 １ａ…インロー部、 ２，２Ａ，２Ｂ，２Ｃ，２Ｄ…固定子鉄心、 ２ａ…凹部、 ３…固定子巻線、 ４…固定子、 ５…軸受ブラケッ
ト、 ７…軸受、 ９…回転子、 10…回転子鉄心、 11…回転軸、 12，12Ａ…空隙、 21…コア止棒、 22,25,29,32 …捩子穴、 23,26,30,33 …ボル
ト、 24…コア止板、 27…２層コア止板、 28…板バネ、 31…傾斜コア止板。1, 20, 20A, 20B, 20C, 20D: stator frame, 1a: spigot portion, 2, 2A, 2B, 2C, 2D: stator core, 2a: recess, 3: stator winding, 4: stator , 5 ... bearing bracket, 7 ... bearing, 9 ... rotor, 10 ... rotor core, 11 ... rotating shaft, 12, 12A ... air gap, 21 ... core retaining rod, 22, 25, 29, 32 ... screw hole, 23, 26, 30, 33 ... bolt, 24 ... core stopper, 27 ... two-layer core stopper, 28 ... leaf spring, 31 ... inclined core stopper.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2F062 AA12 AA36 AA76 BB04 BC80 CC07 CC10 EE09 FF17 GG46 GG51 5H002 AA04 AB04 AB08 AC03 AC08 5H605 AA04 AA05 CC01 CC02 CC04 CC05 DD03 EA02 EA11 EB10 EB35 GG04 GG06 5H615 AA01 BB14 PP01 PP02 PP06 PP12 PP24 PP25 PP28 SS20 SS55 ──────────────────────────────────────────────────続 き Continued on front page F term (reference) 2F062 AA12 AA36 AA76 BB04 BC80 CC07 CC10 EE09 FF17 GG46 GG51 5H002 AA04 AB04 AB08 AC03 AC08 5H605 AA04 AA05 CC01 CC02 CC04 CC05 DD03 EA02 EA11 EB10 EB35 PG04 PP06 PP12 PP24 PP25 PP28 SS20 SS55
Claims (5)
と、この固定子枠の両端に嵌着された軸受ブラケット
と、前記固定子枠内に配設された固定子鉄心に固定子巻
線が収納されてなる固定子と、この固定子の内周側に空
隙を介して配設された回転子鉄心に嵌合された回転軸と
で成る回転子と、この回転子が両端に嵌合された軸受を
介して前記軸受ブラケットで回転自在に支承されて成る
回転電機において、回転電機が相手負荷に据付前の前記
空隙は前記固定子鉄心及び回転子鉄心の中心を夫々偏心
方向と偏心量として設定し、偏心方向は回転電機の回転
軸が据付・運転時に受ける負荷荷重方向と同一方向と
し、偏心量は前記負荷荷重により発生する回転軸及び回
転子鉄心の撓み量と同等となるようにしたことを特徴と
する回転電機。1. A stator frame having a tubular shape and a spigot at both ends, a bearing bracket fitted to both ends of the stator frame, and a stator winding provided on a stator core disposed in the stator frame. A rotor comprising a stator in which wires are accommodated, a rotating shaft fitted to a rotor core disposed through an air gap on the inner peripheral side of the stator, and the rotor fitted at both ends. In a rotating electric machine rotatably supported by the bearing bracket via a combined bearing, the gap before the rotating electric machine is installed on a mating load has eccentric directions and eccentricities of centers of the stator core and the rotor core, respectively. The eccentric direction is the same as the direction of the load applied to the rotating shaft of the rotating electric machine during installation and operation, and the amount of eccentricity is equal to the amount of deflection of the rotating shaft and the rotor core generated by the load. A rotating electric machine characterized by:
回転子の撓み方向と平行となる凹部を複数個設け、この
凹部にコア止棒を配設し固定子枠に穿設した複数個の捩
子穴から該コア止棒をボルト締めにより固定した請求項
１記載の回転電機。2. A plurality of recesses which are provided on the outer periphery of said stator core in parallel with a load direction and a bending direction of a rotor. 2. The rotating electric machine according to claim 1, wherein said core stop bar is fixed from a screw hole by bolting.
し、この多角形の各平面にコア止板を配設し固定子枠に
穿設した複数個の捩子穴から該コア止板をボルト締めに
より固定した請求項１記載の回転電機。3. The stator core has a polygonal outer peripheral shape, a core stopper plate is disposed on each plane of the polygon, and the core stopper plate is formed from a plurality of screw holes drilled in the stator frame. The rotating electric machine according to claim 1, wherein the rotating electric machine is fixed by bolting.
む多角形とし、この多角形の各平面には層間に板バネを
挟設した２層構成の２層コア止板を配設して固定子枠に
穿設した複数個の捩子穴から該２層コア止板をボルト締
めにより固定し、前記板バネの圧力変化により固定子鉄
心と固定子枠の固有振動数を変化させる請求項１記載の
回転電機。4. An outer peripheral shape of the stator core is a polygon including a circular portion, and a two-layer core stopper plate having a two-layer structure in which a leaf spring is interposed between layers is disposed on each plane of the polygon. And fixing the two-layer core stopper plate from a plurality of screw holes formed in the stator frame by bolting, and changing the natural frequency of the stator core and the stator frame by changing the pressure of the leaf spring. Item 4. The rotating electric machine according to Item 1.
む多角形として、この多角形の各平面には１辺が傾斜状
となった傾斜コア止板を配設し、この傾斜コア止板を配
設する固定子枠の相対位置は固定子鉄心端部から中央部
へ径小となる傾斜部を設け、該傾斜部に相互の傾斜方向
が相対するように前記傾斜コア止板を位置させ固定子枠
に穿設した複数個の捩子穴から該傾斜コア止板をボルト
締めにより固定し、固定子枠外部からボルト締めにより
偏心量を調整して空隙長さを調整する請求項１記載の回
転電機。5. An outer peripheral shape of the stator core is a polygon including a circular portion, and an inclined core stopper plate having one side inclined on each plane of the polygon is provided. The relative position of the stator frame on which the plate is disposed is provided with an inclined portion having a smaller diameter from the end of the stator core to the center portion, and the inclined core stopper plate is positioned so that the inclined directions are opposite to each other. The inclined core stopper plate is fixed by bolting from a plurality of screw holes drilled in the stator frame, and the eccentric amount is adjusted by bolting from outside the stator frame to adjust the gap length. The rotating electric machine as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10250231A JP2000083333A (en) | 1998-09-04 | 1998-09-04 | Rotating electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10250231A JP2000083333A (en) | 1998-09-04 | 1998-09-04 | Rotating electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000083333A true JP2000083333A (en) | 2000-03-21 |
Family
ID=17204793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10250231A Pending JP2000083333A (en) | 1998-09-04 | 1998-09-04 | Rotating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000083333A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010193681A (en) * | 2009-02-20 | 2010-09-02 | Nsk Ltd | Electric motor and electric power steering device |
| JP2011501632A (en) * | 2007-10-10 | 2011-01-06 | コンチネンタル オートモーティヴ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Method for securing a ring-shaped segment package with a cylindrical outer wall in a ring-shaped housing |
| JP2013187924A (en) * | 2012-03-06 | 2013-09-19 | Mitsubishi Electric Corp | Dynamo-electric machine and stator core fixing method therefor |
| CN104406507A (en) * | 2014-11-28 | 2015-03-11 | 哈尔滨电机厂有限责任公司 | Stator curve and sinkage measuring method used in 1000MW generator stator transporting and closing process |
| CN105576913A (en) * | 2016-03-02 | 2016-05-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Method, device and equipment for detecting offset between stator and rotor of servo motor |
| CN106411076A (en) * | 2016-11-07 | 2017-02-15 | 吉林东光奥威汽车制动***有限公司 | Clearance adjusting mechanism for stator and rotor of electric vacuum pump |
| CN112003391A (en) * | 2020-08-20 | 2020-11-27 | 珠海格力电器股份有限公司 | Stator core, magnetic suspension bearing and motor |
-
1998
- 1998-09-04 JP JP10250231A patent/JP2000083333A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011501632A (en) * | 2007-10-10 | 2011-01-06 | コンチネンタル オートモーティヴ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Method for securing a ring-shaped segment package with a cylindrical outer wall in a ring-shaped housing |
| JP2010193681A (en) * | 2009-02-20 | 2010-09-02 | Nsk Ltd | Electric motor and electric power steering device |
| JP2013187924A (en) * | 2012-03-06 | 2013-09-19 | Mitsubishi Electric Corp | Dynamo-electric machine and stator core fixing method therefor |
| CN104406507A (en) * | 2014-11-28 | 2015-03-11 | 哈尔滨电机厂有限责任公司 | Stator curve and sinkage measuring method used in 1000MW generator stator transporting and closing process |
| CN105576913A (en) * | 2016-03-02 | 2016-05-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Method, device and equipment for detecting offset between stator and rotor of servo motor |
| CN106411076A (en) * | 2016-11-07 | 2017-02-15 | 吉林东光奥威汽车制动***有限公司 | Clearance adjusting mechanism for stator and rotor of electric vacuum pump |
| CN112003391A (en) * | 2020-08-20 | 2020-11-27 | 珠海格力电器股份有限公司 | Stator core, magnetic suspension bearing and motor |
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