CN100459371C - Rotary motor and its stator bearing structure and manufacture thereof - Google Patents
Rotary motor and its stator bearing structure and manufacture thereof Download PDFInfo
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- CN100459371C CN100459371C CNB2005101254913A CN200510125491A CN100459371C CN 100459371 C CN100459371 C CN 100459371C CN B2005101254913 A CNB2005101254913 A CN B2005101254913A CN 200510125491 A CN200510125491 A CN 200510125491A CN 100459371 C CN100459371 C CN 100459371C
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- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000003466 welding Methods 0.000 claims abstract description 22
- 238000003825 pressing Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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- Manufacture Of Motors, Generators (AREA)
Abstract
The invention provides a stator supporting structure of rotary motor having level axis. The stator supporting structure comprises two end retaining plates 7 fixed to the opposite axial ends of a stator core 1 having a horizontal axis and extending in the direction substantially perpendicular to the axial direction, and a stator frame 2 connected to a stator frame bottom plate 3 for supporting the lower end of the end retaining plate 7 and the stator frame bottom plate 3 and covering the side face 4 of the stator core 1. A leg plate 9 extending in the horizontal direction is secured to the lower end of the end retaining plate 7 by welding and the stator frame bottom plate 3 has two fixed plates 5 extending in parallel in the axial direction below the rotary shaft, and a connection plate 6 spreading in the horizontal direction while connecting the fixed plates 5. A leg plate fixing seat 8 is secured onto the fixed plate 5 by welding and the leg plate 9 is arranged on the leg plate fixing seat 8. The leg plate fixing seat 8 and the leg plate 9 are mutually fastened by screw fasteners 11 and 12.
Description
Technical Field
The present invention relates to a stator support structure that suppresses transmission of vibration or noise generated in a stator core of a rotating electric machine to the outside, a rotating electric machine having the above structure, and a manufacturing method thereof.
Background
Japanese laid-open patent document No.3053947 discloses a structure for suppressing transmission of vibration or noise generated in a stator core of a rotating electric machine such as an induction motor, a generator, or the like to the outside. That is, in this structure, the fixed plate of the stator frame bottom plate and the leg plate of the end holding plate of the stator core are fixed together by bolts. Tolerance air gaps are formed between the lower ends of the end pressing plates on two sides of the stator core and the connecting plates of the stator support bottom plate, and between the side surfaces of the end pressing plates and the stator support side plates.
The structure disclosed in japanese patent document No.3053947 has some problems. That is, in order to fix the fixing plate of the stator frame bottom plate and the leg plate of the end holding plate of the stator core by bolts, the fixing plate must be thick, and thus it is difficult to reduce the weight of the stator frame. In addition, since the fixing position of the bolt is on one side, fastening with the bolt alone is not sufficient, and welding is also required. Further, in the case of adjusting the height to center the stator during assembly of the rotating electrical machine, the foot plate or the fixing plate must be ground, which is labor-intensive.
The present invention has been made in view of the above problems, and an object thereof is to provide a stator support structure which can be reduced in weight and can be simply manufactured, and a rotating electrical machine and a manufacturing method having the above structure.
Disclosure of Invention
According to an aspect of the present invention, there is provided a rotary electric machine including: a rotor rotating about a horizontal axis of rotation; a stator core surrounding the rotor; two end pressing plates fixedly standing at both ends of the stator core in an axial direction and extending in a direction substantially perpendicular to the rotation axis; a stator bracket including a stator bracket bottom plate for supporting a lower end of the end pressing plate, and a stator bracket side plate connected to the stator bracket bottom plate to cover a side surface of the stator core; wherein a leg plate extending in a horizontal direction is fixed to a lower end of each end pressing plate by welding; the stator frame base plate has two fixing plates extending parallel to the rotation axis on the same plane below the rotation axis and a connecting plate connecting the fixing plates so as to be spread in a horizontal direction, the connecting plate being thinner than the fixing plates; a foot plate mounting seat fixed to each of the fixing plates by welding; and each of the foot plates is seated on one of the foot plate mounts, and the foot plate mounts and the foot plates are fastened by threaded fasteners.
According to another aspect of the present invention, there is provided a stator support structure of a rotating electric machine having a horizontal axis, the structure including: two end pressing plates fixedly erected at both ends in an axial direction of the stator core and extending in a direction substantially perpendicular to the rotation axis; a stator bracket including a stator bracket bottom plate for supporting a lower end of the end pressing plate, and a stator bracket side plate connected to the stator bracket bottom plate to cover a side surface of the stator core; wherein a leg plate extending in a horizontal direction is fixed to a lower end of each end pressing plate by welding; the stator frame base plate has two fixing plates extending parallel to the rotation axis on the same plane below the rotation axis and a connecting plate connecting the fixing plates so as to be spread in a horizontal direction, the connecting plate being thinner than the fixing plates; a foot plate mounting seat fixed to each of the fixing plates by welding; and each of the foot plates is seated on one of the foot plate mounts, and the foot plate mounts and the foot plates are fastened by threaded fasteners.
According to still another aspect of the present invention, there is provided a method of manufacturing a rotary electric machine including a stator core having a horizontal axis, two end pressing plates fixed to both axial ends of the stator core, and a stator bracket including a stator bracket bottom plate for supporting lower ends of the end pressing plates and a stator bracket side plate connected to the stator bracket bottom plate to cover a side of the stator core, the method including: a foot plate welding step of fixing the foot plate to the lower end of the end pressing plate by welding; a step of welding a foot plate mounting seat, wherein the foot plate mounting seat is fixed on two fixing plates for forming a bottom plate of the stator bracket by welding; and a fastening step of placing the foot board on the foot board mounting seat and fastening the foot board mounting seat, the adjusting pad and the foot board by using a threaded fastener.
According to the present invention, there are provided a stator support structure which can be reduced in weight and can be manufactured easily, and a rotating electric machine and a manufacturing method having the above structure.
Drawings
Fig. 1 is a vertical sectional view of one embodiment of a stator support structure of a rotating electric machine of the present invention.
Fig. 2 is a partial sectional view taken along a line a-a with an arrow in fig. 1.
Description of the reference numerals
1: stator core
2: stator support
3: stator support bottom plate
4: stator support side plate
5: fixing plate
6: connecting plate
7: end pressing plate
8: foot board mounting seat
9: foot plate
10: adjusting pad
11: bolt
12: nut
13: gap
14: gap
15: stator support reinforcing side plate
20: stator support end plate
21: bearing support plate
22: bearing assembly
Detailed Description
One embodiment of a stator support structure of a rotating electrical machine of the present invention is described below with reference to the drawings. Fig. 1 is a vertical sectional view of one embodiment of a stator support structure of a rotating electric machine of the present invention. Fig. 2 is a partial sectional view taken along a line a-a with an arrow in fig. 1.
The stator frame 2 for supporting the stator core 1 has a stator frame bottom plate 3 constituting a bottom portion and stator frame side plates 4 constituting both side surfaces. A rotor (not shown) rotating about a horizontal axis is disposed in the stator core 1. Stator frame end plates 20 are disposed at both axial ends of the stator frame 2. A bearing support plate 21 is mounted at the stator frame end plate 20, and the bearing support plate 21 supports a rotor (not shown) through a bearing 22.
The stator core 1 is pressed by the end pressing plates 7 at both end surfaces thereof. Each end press plate 7 is a substantially rectangular vertical upright plate, and the lower both sides are mounted with foot plates 9 by welding. The foot plate 9 extends from a position below the end pressing plate 7 along both sides in the axial direction.
The stator frame base plate 3 has two band-shaped fixing plates 5 and a thin plate-shaped connecting plate 6 connected to the fixing plates 5 by welding. The fixed plate 5 extends parallel to the axis, sandwiches the axis below the rotary electric machine, and supports the load of the rotary electric machine. The connecting plate 6 extends horizontally to connect the two fixing plates 5. The foot plate mount 8 is placed in contact with a foot plate 9 on the fixed plate 5 and is welded to the fixed plate 5. The foot plate mount 8 extends along the foot plate 9. Further, a pad 10 is provided between the foot board mount 8 and the foot board 9.
A threaded hole (not shown) is provided at the foot board mount 8. The adjusting pad 10 and the foot plate 9 are fastened to the foot plate mounting seat 8 by means of a bolt 11 and a nut 12. The bolt 11 passes through the threaded hole. Here, as shown in fig. 2, each leg plate 9 is rigidly fastened by bolts 11 and nuts 12 provided on both sides in the axial direction at the lower position of the end pressure plate 7.
As shown in fig. 1, a gap 13 is provided between both side faces of the end holding plate 7 and the inner surface of the stator frame side plate 4 to avoid direct connection. In addition, a gap 14 is provided between the lower surface of the end platen 7 and the link plate 6 so that the lower surface and the link plate 6 do not directly contact.
In order to have sufficient strength against vibration, the stator frame reinforcing side plate 15 formed in a bag structure is fixed to the upper portion of the stator frame side plate 4 by welding, thereby enhancing the rigidity of the stator frame side plate 4.
A gas pipe (not shown) for circulating cooling gas is installed at an upper portion of the stator frame 2.
According to the above-described embodiment, as in the prior art disclosed in japanese patent document No.3053947, transmission of electromagnetic noise generated by the stator core 1 to the outside can be suppressed by the gaps 13 and 14.
In addition, according to the present embodiment, since the leg plate mount 8 is welded to the fixed plate 5 of the stator frame base plate 3, and the leg plate mount 8 is fastened to the leg plate 9 with bolts, the fixed plate 5 can be thinned compared to the prior art disclosed in japanese patent document No.3053947 (in which the fixed plate is directly fastened to the leg plate with bolts). Therefore, the weight of the stator frame can be reduced.
In addition, according to the present embodiment, since each leg plate 9 and each leg plate mount 8 are fastened with the bolt 11 and the nut 12 at two positions sandwiching the lower position of the end pressure plate 7 in the axial direction, it is not necessary to reuse the weld reinforcement. Therefore, the assembly work saves labor as compared with the prior art disclosed in japanese patent document No. 3053947.
In addition, according to the present embodiment, the adjustment pad 10 is sandwiched between the foot board 9 and the foot board mount 8, and is fastened with the bolt 11 and the nut 12. Therefore, it is not necessary to grind the leg plate 9 and the leg plate mount 8 to adjust the height of the stator core 1, which is advantageous for adjusting the fastening position.
Claims (5)
1. A rotating electrical machine comprising:
a rotor rotating about a horizontal axis of rotation;
a stator core surrounding the rotor;
two end pressing plates fixedly erected at both ends in an axial direction of the stator core and extending in a direction perpendicular to the rotation axis;
a stator bracket including a stator bracket bottom plate for supporting a lower end of the end pressing plate, and a stator bracket side plate connected to the stator bracket bottom plate to cover a side surface of the stator core; wherein,
a leg plate extending in the horizontal direction is fixed to a lower end of each end pressing plate by welding;
the stator frame base plate has two fixing plates extending parallel to the rotation axis on the same plane below the rotation axis and a connecting plate connecting the fixing plates so as to be spread in a horizontal direction, the connecting plate being thinner than the fixing plates;
a foot plate mounting seat fixed to each of the fixing plates by welding; and
each of the foot boards is placed on one of the foot board mounts, and the foot board mounts and the foot boards are fastened by threaded fasteners, the fixing plate, the foot board mounts, and the foot boards extend from the end platen lower position along both sides of the rotation axis direction, and the threaded fasteners are placed at both sides of the rotation axis.
2. The rotary electric machine according to claim 1, further comprising: a plurality of adjustment pads, each of the adjustment pads being sandwiched between one of the foot plates and one of the foot plate mounts.
3. The rotating electric machine according to any one of claims 1 to 2, wherein an air gap is formed between a lower end of the end presser plate and the connecting plate and between a side surface of the end presser plate and a stator bracket side plate.
4. A stator support structure of a rotating electric machine having a horizontal axis, the structure comprising:
the two end pressing plates are fixedly erected at two axial ends of the stator core and extend in the direction perpendicular to the horizontal axis;
a stator bracket including a stator bracket bottom plate for supporting a lower end of the end pressing plate, and a stator bracket side plate connected to the stator bracket bottom plate to cover a side surface of the stator core; wherein,
a leg plate extending in the horizontal direction is fixed to a lower end of each end pressing plate by welding;
the stator frame base plate has two fixing plates extending parallel to the horizontal axis on the same plane below the horizontal axis and a connecting plate connecting the fixing plates so as to be spread in the horizontal direction, the connecting plate being thinner than the fixing plates;
a foot plate mounting seat fixed to each of the fixing plates by welding; and
each of the foot boards is placed on one of the foot board mounts, and the foot board mounts and the foot boards are fastened by threaded fasteners, the fixing plate, the foot board mounts, and the foot boards extend from the end press plate lower position along both sides of a horizontal axis direction, and the threaded fasteners are placed at both sides of the horizontal axis.
5. A method of manufacturing a rotary electric machine including a stator core having a horizontal axis, two end pressing plates fixed to both axial ends of the stator core, and a stator bracket including a stator bracket bottom plate for supporting lower ends of the end pressing plates and a stator bracket side plate connected to the stator bracket bottom plate to cover a side surface of the stator core, the method comprising:
a foot plate welding step of fixing the foot plate to the lower end of the end pressing plate by welding;
a step of welding a foot plate mounting seat, wherein the foot plate mounting seat is fixed on two fixing plates for forming a bottom plate of the stator bracket by welding; and
a fastening step of placing the foot board on the foot board mounting seat and fastening the foot board mounting seat, the adjusting pad and the foot board by using a threaded fastener,
wherein the fixing plate, the foot plate mount and the foot plate extend from a position below the end press plate along both sides of a horizontal axis direction, and the threaded fasteners are disposed at both sides of the horizontal axis.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004335467A JP4628753B2 (en) | 2004-11-19 | 2004-11-19 | Rotating electric machine |
| JP335467/2004 | 2004-11-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1780093A CN1780093A (en) | 2006-05-31 |
| CN100459371C true CN100459371C (en) | 2009-02-04 |
Family
ID=36628127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101254913A Active CN100459371C (en) | 2004-11-19 | 2005-11-21 | Rotary motor and its stator bearing structure and manufacture thereof |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4628753B2 (en) |
| CN (1) | CN100459371C (en) |
| RU (1) | RU2301487C1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112350534B (en) * | 2020-12-08 | 2024-06-07 | 镇江中船现代发电设备有限公司 | Stator core subassembly upset pressure equipment frock |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2631497A1 (en) * | 1975-07-14 | 1977-01-20 | Allis Chalmers | SUPPORTING FRAME FOR A DYNAMOELECTRIC MACHINE |
| US4891540A (en) * | 1988-11-01 | 1990-01-02 | Westinghouse Electric Corp. | Generator core support system |
| JPH05199693A (en) * | 1991-08-30 | 1993-08-06 | Toshiba Corp | Rotary electric machine |
| JPH05211743A (en) * | 1992-01-31 | 1993-08-20 | Toshiba Corp | Dynamo-electric machine |
| JPH05219682A (en) * | 1992-02-04 | 1993-08-27 | Toshiba Corp | Vibration isolator of rotating electric machine |
| CN1098231A (en) * | 1993-07-05 | 1995-02-01 | Abb管理有限公司 | Horizontal 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529003A (en) * | 1983-03-21 | 1985-07-16 | Syntex, Inc. | Manifold |
| JP2645189B2 (en) * | 1991-07-22 | 1997-08-25 | 株式会社東芝 | Stator core support device |
| 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 |
-
2004
- 2004-11-19 JP JP2004335467A patent/JP4628753B2/en active Active
-
2005
- 2005-11-18 RU RU2005135948/09A patent/RU2301487C1/en active
- 2005-11-21 CN CNB2005101254913A patent/CN100459371C/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2631497A1 (en) * | 1975-07-14 | 1977-01-20 | Allis Chalmers | SUPPORTING FRAME FOR A DYNAMOELECTRIC MACHINE |
| US4891540A (en) * | 1988-11-01 | 1990-01-02 | Westinghouse Electric Corp. | Generator core support system |
| JPH05199693A (en) * | 1991-08-30 | 1993-08-06 | Toshiba Corp | Rotary electric machine |
| JPH05211743A (en) * | 1992-01-31 | 1993-08-20 | Toshiba Corp | Dynamo-electric machine |
| JPH05219682A (en) * | 1992-02-04 | 1993-08-27 | Toshiba Corp | Vibration isolator of rotating electric machine |
| CN1098231A (en) * | 1993-07-05 | 1995-02-01 | Abb管理有限公司 | Horizontal 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006149084A (en) | 2006-06-08 |
| JP4628753B2 (en) | 2011-02-09 |
| CN1780093A (en) | 2006-05-31 |
| RU2301487C1 (en) | 2007-06-20 |
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