JP2006149084A - Rotary electric machine and its stator supporting structure and manufacturing process - Google Patents
Rotary electric machine and its stator supporting structure and manufacturing process Download PDFInfo
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Abstract
Description
この発明は、回転電機の固定子鉄心に生ずる振動や騒音が外部に伝達するのを抑制する固定子支持構造および、かかる構造を有する回転電機ならびにその製造方法に関する。 The present invention relates to a stator support structure that suppresses transmission of vibration and noise generated in a stator core of a rotating electrical machine to the outside, a rotating electrical machine having such a structure, and a method of manufacturing the same.
誘導電動機や発電機などの回転電機の固定子鉄心に生ずる振動や騒音が外部に伝達するのを抑制する構造として、特許文献1の構造が知られている。すなわちこの構造では、固定子枠底板の固定板と固定子鉄心の端部押え板の脚板とがボルトで固定される。そして、固定子鉄心両側の端部押え板の下端と固定子枠底板の接続板との間、および前記端部押え板の側面と固定子枠側板との間に空隙が形成されている。
特許文献1の構造には次のような課題があった。すなわち、固定子枠底板の固定板と固定子鉄心の端部押え板の脚板とをボルトで固定するために、固定板の厚さを厚くせざるをえず、固定子枠の軽量化が困難であった。また、ボルトでの固定位置が偏っていたため、ボルトによる締結だけでは不充分であって、溶接も必要としていた。さらに、回転電機組立における固定子の芯出しのための高さ調整のさいに、脚板や固定板を削る必要があり、多くの手間がかかっていた。 The structure of Patent Document 1 has the following problems. That is, because the fixing plate of the stator frame bottom plate and the leg plate of the end pressing plate of the stator core are fixed with bolts, the thickness of the fixing plate must be increased, and it is difficult to reduce the weight of the stator frame. Met. Moreover, since the fixing position with the bolts is biased, it is not sufficient to fasten only with the bolts, and welding is also required. Furthermore, when adjusting the height for centering the stator in the rotating electrical machine assembly, it is necessary to cut the leg plate and the fixed plate, which takes much time.
本発明は、かかる事情に鑑みてなされたものであって、軽量化が可能で、製造が容易な固定子支持構造および、かかる構造を有する回転電機ならびにその製造方法を提供することを目的とする。 The present invention has been made in view of such circumstances, and an object thereof is to provide a stator support structure that can be reduced in weight and easily manufactured, a rotating electrical machine having such a structure, and a method of manufacturing the same. .
上記目的を達成するために、本発明に係る回転電機は、水平な回転軸の周りに回転する回転子と、この回転子を囲む固定子鉄心と、この固定子鉄心の軸方向両端部に固定されて立設され、軸方向にほぼ垂直な方向に延びる2枚の端部押え板と、前記端部押え板の下端を支持する固定子枠底板およびこの固定子枠底板に接続されて前記固定子鉄心の側面を覆う固定子枠側板を含む固定子枠と、を有する回転電機であって、前記端部押え板の下端には水平方向に延びる脚板が溶接によって固定されており、前記固定子枠底板は、前記回転軸より下方で互いに同一水平面内で回転軸方向に平行に延びる2本の固定板と、これらの固定板間を接続して水平方向に広がり前記固定板よりも薄い接続板とを有し、前記固定板の上に脚板取り付け座が溶接によって固定され、この脚板取り付け座の上に前記脚板が配置され、前記脚板取り付け座および脚板がねじ締結具によって互いに締め付けられていること、を特徴とする。 In order to achieve the above object, a rotating electrical machine according to the present invention is fixed to a rotor that rotates around a horizontal rotating shaft, a stator core that surrounds the rotor, and both axial ends of the stator core. The two end presser plates that are erected and extend in a direction substantially perpendicular to the axial direction, the stator frame bottom plate that supports the lower end of the end presser plate, and the stator frame bottom plate connected to the stator frame bottom plate A stator frame including a stator frame side plate that covers a side surface of the core, and a leg plate extending in a horizontal direction is fixed to a lower end of the end pressing plate by welding, and the stator The frame bottom plate includes two fixed plates extending below the rotation axis and extending in parallel to the rotation axis direction in the same horizontal plane, and connecting between these fixed plates and extending in the horizontal direction and being thinner than the fixed plate And a leg plate mounting seat on the fixed plate for welding. Fixed I, the leg plate is disposed on the leg plate mounting seat, said foot plate attachment seat and leg plate that are tightened together by screws fasteners, characterized by.
また、本発明に係る回転電機の固定子支持構造は、軸を水平とする固定子鉄心の軸方向両端部に固定されて立設され、軸方向にほぼ垂直な方向に延びる2枚の端部押え板と、前記端部押え板の下端を支持する固定子枠底板およびこの固定子枠底板に接続されて前記固定子鉄心の側面を覆う固定子枠側板を含む固定子枠と、を有する回転電機の固定子支持構造であって、前記端部押え板の下端には水平方向に延びる脚板が溶接によって固定されており、前記固定子枠底板は、前記回転軸より下方で互いに同一水平面内で軸方向に平行に延びる2本の固定板と、これらの固定板間を接続して水平方向に広がり前記固定板よりも薄い接続板とを有し、前記固定板の上に脚板取り付け座が溶接によって固定され、この脚板取り付け座の上に前記脚板が配置され、前記脚板取り付け座および脚板がねじ締結具によって互いに締め付けられていること、を特徴とする。 The stator support structure for a rotating electrical machine according to the present invention has two end portions that are fixedly provided at both axial end portions of a stator core having a horizontal axis and extend in a direction substantially perpendicular to the axial direction. Rotation having a presser plate, a stator frame including a stator frame bottom plate that supports the lower end of the end presser plate, and a stator frame side plate that is connected to the stator frame bottom plate and covers a side surface of the stator core. A stator support structure for an electric machine, wherein a leg plate extending in a horizontal direction is fixed to a lower end of the end presser plate by welding, and the stator frame bottom plates are below the rotating shaft and in the same horizontal plane. There are two fixed plates extending parallel to the axial direction, and a connection plate that extends between the fixed plates and extends in the horizontal direction and is thinner than the fixed plate. A leg plate mounting seat is welded on the fixed plate. The leg plate is fixed on the leg plate mounting seat. It is location, the leg plate attachment seat and leg plate that are tightened together by screws fasteners, characterized by.
さらに、本発明に係る回転電機の製造方法は、軸を水平とする固定子鉄心と、この固定子鉄心の軸方向両端部に固定される2枚の端部押え板と、前記端部押え板の下端を支持する固定子枠底板およびこの固定子枠底板に接続されて前記固定子鉄心の側面を覆う固定子枠側板を含む固定子枠と、を有する回転電機の製造方法であって、前記端部押え板の下端に脚板を溶接によって固定する脚板溶接工程と、前記固定子枠底板を構成する2本の固定板に脚板取り付け座を溶接によって固定する脚板取り付け座溶接工程と、この脚板取り付け座の上に前記脚板を配置し、前記脚板取り付け座、調整用ライナーおよび脚板をねじ締結具によって互いに締め付ける締結工程と、を有すること、を特徴とする。 Furthermore, the manufacturing method of the rotating electrical machine according to the present invention includes a stator core having a horizontal axis, two end pressing plates fixed to both axial end portions of the stator core, and the end pressing plate. A stator frame bottom plate that supports a lower end of the stator frame, and a stator frame that includes a stator frame side plate that is connected to the stator frame bottom plate and covers a side surface of the stator core. A leg plate welding process for fixing the leg plate to the lower end of the end presser plate by welding, a leg plate mounting seat welding process for fixing the leg plate mounting seat to the two fixing plates constituting the stator frame bottom plate, and this leg plate mounting And a fastening step in which the leg plate is disposed on a seat and the leg plate mounting seat, the adjustment liner, and the leg plate are fastened to each other by a screw fastener.
本発明によれば、軽量化が可能で、製造が容易な固定子支持構造および、かかる構造を有する回転電機ならびにその製造方法を提供できる。 ADVANTAGE OF THE INVENTION According to this invention, the stator support structure which can be reduced in weight and is easy to manufacture, the rotary electric machine which has this structure, and its manufacturing method can be provided.
以下、本発明に係る回転電機の固定子支持構造の実施形態を、図面を参照して説明する。図1は、本発明に係る回転電機の固定子支持構造の一実施形態を示す立断面図であり、図2は図1のA−A線矢視部分側断面図である。 Embodiments of a stator support structure for a rotating electrical machine according to the present invention will be described below with reference to the drawings. FIG. 1 is a vertical sectional view showing an embodiment of a stator support structure for a rotating electrical machine according to the present invention, and FIG. 2 is a partial side sectional view taken along line AA in FIG.
固定子鉄心1を支持する固定子枠2は、底面を構成する固定子底板3と、両側面を構成する固定子枠側板4とを有する。固定子鉄心1内に、水平軸周りに回転する回転子(図示せず)が配置される。固定子枠2の軸方向両端には固定子枠端板20が配置される。この固定子枠端板20に軸受支持板21が取り付けられ、軸受支持板21は、軸受22を介して回転子を支持する。
A stator frame 2 that supports the stator core 1 includes a
固定子鉄心1は、その両端面をそれぞれ端部押え板7で押圧されている。端部押え板7は、直立するほぼ四角形状の板であって、その下部両側それぞれに脚板9が溶接で取り付けられている。脚板9は、端部押え板7の下方位置から軸方向両側に延びている。
The stator iron core 1 is pressed at its both end surfaces by
固定子底板3は、2本の帯状の板である固定板5と、これらの固定板5に溶接接合された薄板状の接続板6とからなる。固定板5は、回転電機の下方で軸をはさんで軸に平行に延びて回転電機の荷重を支持し、接続板6は2本の固定板5の間をつなぐように水平に延びている。固定板5の上の脚板9と当る部分には脚板取り付け座8があって、固定板5に溶接されている。脚板取り付け座8は、脚板9と対向して、ほぼ脚板9に沿って延びている。さらに、脚板取り付け座8と脚板9との間には調整ライナー10が配置されている。
The
脚板取り付け座8にはねじ孔(図示せず)が設けられ、このねじ穴にねじ込まれたボルト11とナット12により、脚板取り付け座8上に、調整ライナー10および脚板9が締め付けられる。ここで、各脚板9は図2に示すように、ボルト11およびナット12の位置は、端部押え板7の下方位置の軸方向両側にあり、強固に締結される。
The leg
図1に示すように、端部押え板7の両側面と固定子枠側板4の内面とが直接つながらないように、両者の間に隙間13が設けられている。また、端部押え板7の下面と接続板6とが直接つながらないように、両者の間に隙間14が形成されている。
As shown in FIG. 1, a
また、振動に対して十分な強度を持たせるために、固定子枠側板4の上部に袋構成とした固定子枠補強側板15が溶接で固着され、固定子枠側板4の剛性が高められている。
Further, in order to give sufficient strength against vibration, a stator frame reinforcing
固定子枠2の上部には冷却風を循環させるための風道(図示せず)が取り付けられている。 An air passage (not shown) for circulating cooling air is attached to the upper portion of the stator frame 2.
以上説明した実施形態によれば、特許文献1に開示された従来技術と同様に、隙間13、14の存在によって、固定子鉄心1から発生した電磁騒音が外部に伝達されるのを抑制できる。
According to the embodiment described above, the electromagnetic noise generated from the stator core 1 can be suppressed from being transmitted to the outside due to the presence of the
さらに、本実施形態によれば、固定子底板3の固定板5に脚板取り付け座8を溶接し、この脚板取り付け座8と脚板9とをボルト締結するので、固定板と脚板とを直接ボルト締結する特許文献1の技術に比べて、固定板5を薄くすることができる。そのため、固定子枠2全体の軽量化を図ることができる。
Further, according to the present embodiment, the leg
さらに、本実施形態によれば、端部押え板7の下方位置を軸方向にはさむ2箇所で脚板9と脚板取り付け座8とをボルト11とナット12で締結するので、溶接による補強が不要であり、特許文献1の従来技術に比べて組立作業の省力化を図れる。
Furthermore, according to the present embodiment, the
さらに、本実施形態によれば、脚板9と脚板取り付け座8との間に調整ライナー10をはさんでボルト11とナット12で締結するので、固定子鉄心1の高さ調整のために脚板9や脚板取り付け座8を削る必要がなく、締結位置の調整が容易である。
Furthermore, according to the present embodiment, the
1:固定子鉄心
2:固定子枠
3:固定子底板
4:固定子枠側板
5:固定板
6:接続板
7:端部押え板
8:脚板取り付け座
9:脚板
10:調整ライナー
11:ボルト
12:ナット
13:隙間
14:隙間
15:固定子枠補強側板
20:固定子枠端板
21:軸受支持板
22:軸受
1: Stator core 2: Stator frame 3: Stator bottom plate 4: Stator frame side plate 5: Fixed plate 6: Connection plate 7: End pressing plate 8: Leg plate mounting seat 9: Leg plate 10: Adjustment liner 11: Bolt 12: nut 13: gap 14: gap 15: stator frame reinforcing side plate 20: stator frame end plate 21: bearing support plate 22: bearing
Claims (6)
この回転子を囲む固定子鉄心と、
この固定子鉄心の軸方向両端部に固定されて立設され、軸方向にほぼ垂直な方向に延びる2枚の端部押え板と、
前記端部押え板の下端を支持する固定子枠底板およびこの固定子枠底板に接続されて前記固定子鉄心の側面を覆う固定子枠側板を含む固定子枠と、
を有する回転電機であって、
前記端部押え板の下端には水平方向に延びる脚板が溶接によって固定されており、
前記固定子枠底板は、前記回転軸より下方で互いに同一水平面内で回転軸方向に平行に延びる2本の固定板と、これらの固定板間を接続して水平方向に広がり前記固定板よりも薄い接続板とを有し、
前記固定板の上に脚板取り付け座が溶接によって固定され、
この脚板取り付け座の上に前記脚板が配置され、前記脚板取り付け座および脚板がねじ締結具によって互いに締め付けられていること、
を特徴とする回転電機。 A rotor that rotates about a horizontal axis of rotation;
A stator core surrounding this rotor,
Two end presser plates that are fixedly provided at both axial ends of the stator core and extend in a direction substantially perpendicular to the axial direction;
A stator frame including a stator frame bottom plate that supports a lower end of the end pressing plate, and a stator frame side plate that is connected to the stator frame bottom plate and covers a side surface of the stator core;
A rotating electric machine having
A leg plate extending in the horizontal direction is fixed to the lower end of the end pressing plate by welding,
The stator frame bottom plate has two fixed plates extending below the rotation axis and extending in parallel to the rotation axis direction in the same horizontal plane, and is connected between these fixed plates and spreads in the horizontal direction, more than the fixed plate. A thin connecting plate,
A leg plate mounting seat is fixed on the fixing plate by welding,
The leg plate is disposed on the leg plate mounting seat, and the leg plate mounting seat and the leg plate are fastened to each other by a screw fastener;
Rotating electric machine.
前記端部押え板の下端を支持する固定子枠底板およびこの固定子枠底板に接続されて前記固定子鉄心の側面を覆う固定子枠側板を含む固定子枠と、
を有する回転電機の固定子支持構造であって、
前記端部押え板の下端には水平方向に延びる脚板が溶接によって固定されており、
前記固定子枠底板は、前記回転軸より下方で互いに同一水平面内で軸方向に平行に延びる2本の固定板と、これらの固定板間を接続して水平方向に広がり前記固定板よりも薄い接続板とを有し、
前記固定板の上に脚板取り付け座が溶接によって固定され、
この脚板取り付け座の上に前記脚板が配置され、前記脚板取り付け座および脚板がねじ締結具によって互いに締め付けられていること、
を特徴とする回転電機の固定子支持構造。 Two end presser plates that are fixedly provided at both axial ends of the stator core having a horizontal axis and extend in a direction substantially perpendicular to the axial direction;
A stator frame including a stator frame bottom plate that supports a lower end of the end pressing plate, and a stator frame side plate that is connected to the stator frame bottom plate and covers a side surface of the stator core;
A stator support structure for a rotating electric machine having
A leg plate extending in the horizontal direction is fixed to the lower end of the end pressing plate by welding,
The stator frame bottom plate has two fixing plates that extend below the rotating shaft and extend in parallel to each other in the same horizontal plane in the same horizontal plane, and are connected between these fixing plates and spread in the horizontal direction, and are thinner than the fixing plate. A connection plate,
A leg plate mounting seat is fixed on the fixing plate by welding,
The leg plate is disposed on the leg plate mounting seat, and the leg plate mounting seat and the leg plate are fastened to each other by a screw fastener;
A structure for supporting a stator of a rotating electric machine.
前記端部押え板の下端に脚板を溶接によって固定する脚板溶接工程と、
前記固定子枠底板を構成する2本の固定板に脚板取り付け座を溶接によって固定する脚板取り付け座溶接工程と、
この脚板取り付け座の上に前記脚板を配置し、前記脚板取り付け座、調整用ライナーおよび脚板をねじ締結具によって互いに締め付ける締結工程と、
を有すること、を特徴とする回転電機の製造方法。 Stator core having a horizontal axis, two end pressing plates fixed to both axial ends of the stator core, a stator frame bottom plate supporting the lower end of the end pressing plate, and the stator A stator frame including a stator frame side plate connected to a frame bottom plate and covering a side surface of the stator core, and a method of manufacturing a rotating electrical machine,
A leg plate welding step of fixing the leg plate to the lower end of the end presser plate by welding;
A leg plate mounting seat welding step for fixing the leg plate mounting seat to the two fixing plates constituting the stator frame bottom plate by welding;
A fastening step in which the leg plate is disposed on the leg plate mounting seat, and the leg plate mounting seat, the adjustment liner and the leg plate are fastened to each other by a screw fastener;
The manufacturing method of the rotary electric machine characterized by having.
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JP2004335467A JP4628753B2 (en) | 2004-11-19 | 2004-11-19 | Rotating electric machine |
RU2005135948/09A RU2301487C1 (en) | 2004-11-19 | 2005-11-18 | Rotary electrical machine, its stator supporting structure, and manufacturing process |
CNB2005101254913A CN100459371C (en) | 2004-11-19 | 2005-11-21 | Rotary motor and its stator bearing structure and manufacture thereof |
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JP2004335467A JP4628753B2 (en) | 2004-11-19 | 2004-11-19 | Rotating electric machine |
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CN102223028A (en) * | 2011-06-21 | 2011-10-19 | 盐城市雷鸣电器制造有限公司 | Assembling structure for grinding wheel machine stator |
US9190890B2 (en) * | 2013-02-18 | 2015-11-17 | Siemens Energy, Inc. | Method and apparatus for removal and replacement of a wound stator core |
CN105790489A (en) * | 2016-04-05 | 2016-07-20 | 中国船舶重工集团公司第七〇二研究所 | Low-vibration motor |
CN112366874B (en) * | 2020-11-20 | 2023-08-08 | 镇江中船现代发电设备有限公司 | Combined synchronous generator base and processing method |
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JPH05168179A (en) * | 1991-12-16 | 1993-07-02 | Fuji Electric Co Ltd | Structure and method for attaching spring-plate to stator core for electric rotary machine |
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JPH05199693A (en) * | 1991-08-30 | 1993-08-06 | Toshiba Corp | Rotary electric machine |
JP3053947B2 (en) * | 1992-01-31 | 2000-06-19 | 株式会社東芝 | Rotating electric machine |
JPH05219682A (en) * | 1992-02-04 | 1993-08-27 | Toshiba Corp | Vibration isolator of rotating electric machine |
DE4322268A1 (en) * | 1993-07-05 | 1995-01-12 | Abb Management Ag | Horizontal axis electrical machine |
JPH08182246A (en) * | 1994-12-21 | 1996-07-12 | Toshiba Corp | Electric rotating machine |
US6091177A (en) * | 1999-03-22 | 2000-07-18 | Siemens Westinghouse Power Corporation | Spring mounting for an electric generator |
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2004
- 2004-11-19 JP JP2004335467A patent/JP4628753B2/en active Active
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2005
- 2005-11-18 RU RU2005135948/09A patent/RU2301487C1/en active
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JPH0530689A (en) * | 1991-07-22 | 1993-02-05 | Toshiba Corp | Supporting device for stator core |
JPH05168179A (en) * | 1991-12-16 | 1993-07-02 | Fuji Electric Co Ltd | Structure and method for attaching spring-plate to stator core for electric rotary machine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112350534A (en) * | 2020-12-08 | 2021-02-09 | 镇江中船现代发电设备有限公司 | Stator core assembly overturning and pressing tool |
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RU2301487C1 (en) | 2007-06-20 |
CN100459371C (en) | 2009-02-04 |
CN1780093A (en) | 2006-05-31 |
JP4628753B2 (en) | 2011-02-09 |
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