JP2019050701A

JP2019050701A - Electric rotating machine and method of manufacturing electric rotating machine

Info

Publication number: JP2019050701A
Application number: JP2017174781A
Authority: JP
Inventors: 広唯遠藤; Hirotada Endo; 直敏鶴田; Naotoshi Tsuruta; 正英古川; Masahide Furukawa; 敬二永瀬; Keiji Nagase; 真興齋藤; Masaoki Saito; 弘基菊地原; Hiroki Kikuchihara
Original assignee: Toshiba Corp; Toshiba Energy Systems and Solutions Corp
Current assignee: Toshiba Corp; Toshiba Energy Systems and Solutions Corp
Priority date: 2017-09-12
Filing date: 2017-09-12
Publication date: 2019-03-28

Abstract

【課題】簡易な構造で組立作業を容易にできる回転電機および回転電機の製造方法を提供すること。【解決手段】本発明の実施形態によれば、回転電機の筐体であって、回転子の回転軸に対する径方向外側から固定子を固定する固定子枠と、嵌合部を有する第一の面および前記第一の面に隣接し基礎に連結される第二の面を具備する支持部と、を備え、前記固定子枠は、前記嵌合部が嵌合する被嵌合部を有すると共に前記第一の面と当接する取付座を外周面に備える。【選択図】図２An object of the present invention is to provide a rotating electrical machine and a method of manufacturing the same that can be easily assembled with a simple structure. According to an embodiment of the present invention, there is provided a housing of a rotating electrical machine, comprising: a stator frame for fixing a stator from an outer side in a radial direction with respect to a rotation shaft of a rotor; And a support portion having a second surface adjacent to the first surface and connected to the foundation, the stator frame having a fitted portion with which the fitting portion is fitted. A mounting seat in contact with the first surface is provided on the outer peripheral surface. [Selected figure] Figure 2

Description

本発明の実施形態は、回転電機および回転電機の製造方法に関する。 Embodiments of the present invention relate to a rotating electrical machine and a method of manufacturing the rotating electrical machine.

電動機の固定子枠の外周面に設けられた凸部を、支持部に備わった２本の突出部の間に嵌め、その後にボルト締めする方法が知られている。このように固定子枠と支持部を分割する方法を、例えば、発電所などに用いられる大型の回転電機に応用し、固定子枠と支持部を分割して輸送して現地で組み立てることで、大型の回転電機が輸送時に輸送制限を受けることを回避することができる。 There is known a method in which a convex portion provided on the outer peripheral surface of a stator frame of a motor is fitted between two projecting portions provided on a support portion and then bolted. By applying the method of dividing the stator frame and the support in this manner to, for example, a large rotating electrical machine used in a power plant or the like, the stator frame and the support may be divided and transported and assembled on site. It is possible to avoid that the large-sized rotary electric machine is subjected to transportation restrictions during transportation.

特開平８−２０５４４８号公報JP-A-8-205448

上述の方法を特に大型の回転電機に適用する場合、回転電機の重量を支持部で支えるために固定子枠と支持部とを連結させるためのボルトを多数用いる必要があり、組立作業には多くの時間がかかる。したがって、簡易な構造で組立作業を容易にできる回転電機および回転電機の製造方法が求められている。 When the above method is applied to a large-sized rotating electrical machine, in particular, it is necessary to use a large number of bolts for connecting the stator frame and the supporting portion to support the weight of the rotating electrical machine by the supporting portion. It takes time. Therefore, there is a need for a rotating electrical machine and a method of manufacturing the same, which can be easily assembled with a simple structure.

そこで、本発明が解決しようとする課題は、簡易な構造で組立作業を容易にできる回転電機および回転電機の製造方法を提供することである。 Therefore, the problem to be solved by the present invention is to provide a rotating electrical machine and a method of manufacturing the same, which can be easily assembled with a simple structure.

上述の課題を解決するために、実施形態の回転電機は、固定子枠と、嵌合部を有する第一の面および前記第一の面に隣接し基礎に連結される第二の面を具備する支持部と、を備え、前記固定子枠は、前記嵌合部が嵌合する被嵌合部を有すると共に前記第一の面と当接する取付座を外周面に備える。 In order to solve the problems described above, the rotating electrical machine according to the embodiment includes a stator frame, a first surface having a fitting portion, and a second surface adjacent to the first surface and connected to a foundation. And the stator frame has a fitting portion to which the fitting portion is fitted, and a mounting seat that abuts on the first surface on the outer peripheral surface.

また、上述の課題を解決するために、実施形態の回転電機の製造方法は、固定子枠の外周面に備えられた取付座の被嵌合部に支持部の第一の面に設けられた嵌合部を嵌合させて前記取付座に前記支持部を取り付ける取付工程と、前記支持部の第一の面に隣接する第二の面を基礎に連結させる連結工程と、からなる。 Moreover, in order to solve the above-mentioned subject, the manufacturing method of the rotary electric machine of embodiment is provided in the 1st surface of a support part in the to-be-fitted part of the attachment seat with which the outer peripheral surface of the stator frame was equipped. It comprises: an attaching step of fitting the fitting portion to attach the support portion to the mounting seat; and a connecting step of connecting a second surface adjacent to the first surface of the support portion to a base.

実施形態に係る回転電機の側面図。The side view of the rotary electric machine which concerns on embodiment. 図１のＡ−Ａ断面図。AA sectional drawing of FIG. 実施形態に係る回転電機の支持部の構成を示す図であって、（ａ）は斜視図、（ｂ）は固定子枠に取り付けた状態を示す概略図。It is a figure which shows the structure of the support part of the rotary electric machine which concerns on embodiment, Comprising: (a) is a perspective view, (b) is the schematic which shows the state attached to the stator frame.

以下、実施形態に係る回転電機について、図１および図２を用いて説明する。図１は、実施形態に係る回転電機の側面図であり、図２は、図１のＡ−Ａ断面図である。図１においては、波線よりも紙面左側は固定子枠１２の外形を示し、波線よりも紙面右側は回転電機１の機内をそれぞれ示している。 Hereinafter, the rotating electrical machine according to the embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a side view of a rotating electrical machine according to an embodiment, and FIG. 2 is a cross-sectional view taken along line A-A of FIG. In FIG. 1, the left side of the drawing with respect to the dashed line indicates the outer shape of the stator frame 12, and the right side of the drawing with respect to the wavy line indicates the interior of the rotary electric machine 1.

図１および図２に示すように、実施形態に係る回転電機１は、例えばタービン発電機であり、回転軸を備えた回転子１０と、固定子１１と、固定子枠１２と、支持部２０から構成される。 As shown in FIGS. 1 and 2, the rotary electric machine 1 according to the embodiment is, for example, a turbine generator, and includes a rotor 10 having a rotation shaft, a stator 11, a stator frame 12, and a support 20. It consists of

回転子１０は、回転軸を有する回転体であり、固定子枠１２の内周側の回転軸方向両端に取り付けられた図示しない軸受によって回転可能に支持される。 The rotor 10 is a rotating body having a rotation axis, and is rotatably supported by bearings (not shown) attached to both ends in the rotation axis direction of the inner peripheral side of the stator frame 12.

固定子１１は、回転軸に対する径方向外側に、空隙１３を介して回転子１０を覆うように固定子枠１２に固定されて設けられる。また、固定子１１は、周方向に複数配置した扇形状の鉄板を軸方向に積層して構成される固定子鉄心の内周側の周方向に、それぞれ軸方向に延びる固定子コイル１４を複数配列して構成される。 The stator 11 is fixed to the stator frame 12 so as to cover the rotor 10 via the air gap 13 radially outward with respect to the rotation axis. Further, the stator 11 has a plurality of stator coils 14 each extending in the axial direction in the circumferential direction on the inner peripheral side of a stator iron core configured by axially stacking a plurality of fan-shaped iron plates arranged in the circumferential direction. It is arranged and arranged.

固定子枠１２は、回転電機１の筐体であって、回転子１０の回転軸に対する径方向外側から固定子１１を固定する。図２に示すように、固定子枠１２の外周面において、回転子１０の回転軸に対して互いに対称な位置に支持部２０を取り付けるための取付座２３がそれぞれ備えられる。さらに、この取付座２３は、固定子枠１２の長手方向（すなわち、回転子１０の回転軸方向）の位置が異なる一方と他方に１つずつ、合計４つ設けられている。本実施形態では、取付座２３を固定子枠１２の側面（固定子枠１２の長手方向に垂直な断面（例えばＡ−Ａ断面）での両側面）に合計４つ設けるように構成しているが、回転電機１の重量や大きさに応じて、取付座２３の個数を適宜増減させても構わない。 The stator frame 12 is a housing of the rotary electric machine 1 and fixes the stator 11 from the outside in the radial direction with respect to the rotation axis of the rotor 10. As shown in FIG. 2, on the outer peripheral surface of the stator frame 12, mounting seats 23 for mounting the support portions 20 at symmetrical positions with respect to the rotation axis of the rotor 10 are respectively provided. Furthermore, a total of four mounting seats 23 are provided, one on each of the one and the other on which the positions of the stator frame 12 in the longitudinal direction (that is, the rotational axis direction of the rotor 10) are different. In the present embodiment, a total of four mounting seats 23 are provided on the side surfaces of the stator frame 12 (both side surfaces in a cross section perpendicular to the longitudinal direction of the stator frame 12 (for example, A-A cross section)). However, the number of mounting seats 23 may be increased or decreased as appropriate according to the weight and size of the rotating electrical machine 1.

取付座２３は、それぞれ取付面２４を有する。 The mounting seats 23 each have a mounting surface 24.

取付面２４は、支持部２０の第一の面である側面２１に当接する取付座当接面と、この取付座当接面から陥没した被嵌合部である凹部２４ａを備える。取付座２３の取付座当接面は、後述する支持部２０の底面２２に対して垂直であることが好ましい。本実施形態において、回転電機１を支持する固定子枠１２の取付座２３の取付座当接面は、回転電機１が据え付けられた状態での水平面に対する垂直面となっている。 The mounting surface 24 includes a mounting seat contact surface that contacts the side surface 21 that is the first surface of the support portion 20, and a recess 24a that is a fitted portion recessed from the mounting seat contact surface. The mounting seat contact surface of the mounting seat 23 is preferably perpendicular to the bottom surface 22 of the support portion 20 described later. In the present embodiment, the mounting seat contact surface of the mounting seat 23 of the stator frame 12 supporting the rotary electric machine 1 is a vertical surface with respect to the horizontal plane in the state where the rotary electric machine 1 is installed.

凹部２４ａは、後述する支持部２０の嵌合部である凸部２１ａに対応するように設けられた被嵌合部である。本実施形態では、凹部２４ａは、固定子枠１２の長手方向（回転子１０の回転軸方向）に延びて設けられる。凹部２４ａは、固定子枠１２の長手方向に垂直な断面（例えばＡ−Ａ断面）において矩形となっている。この凹部２４ａは、取付座当接面を回転子１０の回転軸方向に削り出すなどして設ければよい。 The concave portion 24 a is a fitted portion provided to correspond to a convex portion 21 a which is a fitting portion of the support portion 20 described later. In the present embodiment, the recess 24 a is provided to extend in the longitudinal direction of the stator frame 12 (the rotation axis direction of the rotor 10). The recess 24 a is rectangular in a cross section (for example, an A-A cross section) perpendicular to the longitudinal direction of the stator frame 12. The recess 24 a may be provided by cutting out the mounting seat contact surface in the rotational axis direction of the rotor 10 or the like.

支持部２０は、第一の面である側面２１と、嵌合部を構成する凸部２１ａと、第二の面である底面２２と、側面２１の径方向外側面および底面２２の上面にそれぞれ当接する複数のリブ２５から構成される。この支持部２０は、図１に示す波線よりも紙面右側の固定子枠１２の外周が図示されていない部分にも設けられている。すなわち図１および図２では、固定子枠１２の長手方向に垂直な断面（例えばＡ−Ａ断面）において、固定子枠１２の長手方向の片側に２個ずつ、すなわち両側で４個の支持部２０が設けられる。なお、図１および図２の変形例として、４個の支持部２０のうち、少なくとも１つを支持部２０とし、残りは従来の支持部を用いてもよい。また、本実施形態およびその変形例において、この支持部２０を含む回転電機１の支持部は、固定子枠１２の長手方向に垂直な断面（例えばＡ−Ａ断面）において回転電機１の片側に少なくとも１つずつ、すなわち両側で少なくとも２個あればよい。その際に、支持部２０の個数は、取付座２３の数に応じて、適宜増減させればよい。 The support portion 20 is provided on the side surface 21 which is the first surface, the convex portion 21a which constitutes the fitting portion, the bottom surface 22 which is the second surface, and the upper surface of the side surface 21 in the radial direction and the bottom surface 22 respectively. It comprises a plurality of ribs 25 in contact. The support portion 20 is also provided in a portion, not shown, of the outer periphery of the stator frame 12 on the right side of the broken line in FIG. That is, in FIG. 1 and FIG. 2, in the cross section (for example, the A-A cross section) perpendicular to the longitudinal direction of the stator frame 12, two each on one side in the longitudinal direction of the stator frame 12, ie, four supporting portions on both sides 20 are provided. In addition, as a modification of FIG. 1 and FIG. 2, at least one may be used as the support part 20 among the four support parts 20, and the remaining support parts may be used. Further, in the present embodiment and its modification, the support portion of the rotary electric machine 1 including the support portion 20 is on one side of the rotary electric machine 1 in a cross section (for example, an AA cross section) perpendicular to the longitudinal direction of the stator frame 12 There should be at least one each, ie at least two on each side. At that time, the number of support portions 20 may be appropriately increased or decreased according to the number of mounting seats 23.

側面２１は、取付座２３の取付座当接面に当接する当接面を備え、凸部２１ａはこの当接面から突出して設けられる。すなわち、支持部２０の当接面は、側面２１のうち嵌合部である凸部２１ａを除く部分であり、取付座２３の取付座当接面と同様に支持部２０の底面２２に対して垂直であることが好ましい。 The side surface 21 is provided with an abutment surface that abuts on the attachment seat abutment surface of the attachment seat 23, and the convex portion 21a is provided so as to protrude from the abutment surface. That is, the contact surface of the support portion 20 is a portion of the side surface 21 excluding the convex portion 21 a which is the fitting portion, and the bottom surface 22 of the support portion 20 is the same as the mounting seat contact surface of the mounting seat 23. It is preferably vertical.

凸部２１ａは、取付座２３の凹部２４ａに対応するように設けられた嵌合部である。本実施形態において、凸部２１ａは、凹部２４ａと同様に固定子枠１２の長手方向に延びて設けられるとともに、固定子枠１２の長手方向に垂直な断面（例えばＡ−Ａ断面）において矩形となっている。この凸部２１ａは、側面２１の当接面を回転子１０の回転軸方向に削り出して設けるか、側面２１の当接面に断面が矩形で回転子１０の回転軸方向に延びる部材を溶接して設ければよい。 The convex portion 21 a is a fitting portion provided to correspond to the concave portion 24 a of the mounting seat 23. In the present embodiment, the convex portion 21a is provided to extend in the longitudinal direction of the stator frame 12 similarly to the concave portion 24a, and has a rectangular shape in a cross section (for example, an A-A cross section) perpendicular to the longitudinal direction of the stator frame 12. It has become. The convex portion 21a is formed by scraping the contact surface of the side surface 21 in the rotational axis direction of the rotor 10 or welding a member extending in the rotational shaft direction of the rotor 10 with a rectangular cross section on the contact surface of the side surface 21 It should just be provided.

底面２２は、側面２１に隣接する支持部２０の面であり、基礎３０に連結される。この底面２２は図２に示した部材であっても良いし、後述するリブ２５および側面２１が基礎３０と接する面であってもよい。 The bottom surface 22 is a surface of the support portion 20 adjacent to the side surface 21 and is connected to the base 30. The bottom surface 22 may be a member shown in FIG. 2 or may be a surface where ribs 25 and side surfaces 21 described later contact the base 30.

リブ２５は、側面２１の当接面の反対側（すなわち、回転電機１の径方向外側）の面と、底面２２の基礎３０に連結される面の反対側（すなわち、上側）の面にそれぞれ当接して設けられ、側面２１と底面２２の連結を補強する補強部材である。 The ribs 25 are respectively provided on the surface opposite to the contact surface of the side surface 21 (i.e., radially outward of the rotating electrical machine 1) and on the surface opposite to the surface of the bottom surface 22 connected to the base 30 (i.e., upper). It is a reinforcement member provided in contact with and reinforcing the connection between the side surface 21 and the bottom surface 22.

基礎３０は、回転電機１が据え付けられる発電プラントの建屋などに設置されており、このプラントに据え付けられる回転電機１の固定子枠１２の取付座２３に対応する位置に設けられる。本実施形態では、基礎３０は、回転子１０の回転軸方向に延びて設けられ、固定子枠１２の長手方向に垂直な断面（例えばＡ−Ａ断面）において回転電機１の両側に１つずつ、合計２つが対となって設けられている。なお、基礎３０を取付座２３の数と同じだけ、すなわち図１および図２に示した本実施形態では４つ、設ける構成としても構わない。 The foundation 30 is installed in a building or the like of a power plant in which the rotating electrical machine 1 is installed, and is provided at a position corresponding to the mounting seat 23 of the stator frame 12 of the rotating electrical machine 1 installed in this plant. In the present embodiment, the foundations 30 are provided to extend in the rotational axis direction of the rotor 10, and one each on both sides of the rotary electric machine 1 in a cross section (for example, A-A cross section) perpendicular to the longitudinal direction of the stator frame 12 , A total of two are provided in pairs. The number of foundations 30 may be the same as the number of mounting seats 23, that is, four in the embodiment shown in FIGS. 1 and 2.

本実施形態において、基礎３０の上面は水平面となっている。したがって、底面２２が基礎３０に連結されて回転電機１が基礎３０上に据え付けられた状態で、側面２１の当接面は、取付座２３の取付座当接面と同様に鉛直面となる。なお、基礎３０の上面は水平面であることが好ましいが、支持部２０が回転電機１を支持できる構成であれば、この上面が傾斜面であってもよい。 In the present embodiment, the upper surface of the foundation 30 is a horizontal surface. Therefore, in a state where the bottom surface 22 is connected to the base 30 and the rotary electric machine 1 is installed on the base 30, the contact surface of the side surface 21 is a vertical surface like the mounting seat contacting surface of the mounting seat 23. In addition, although it is preferable that the upper surface of the base 30 is a horizontal surface, as long as the support part 20 can support the rotary electric machine 1, this upper surface may be an inclined surface.

回転子１０の回転軸方向に垂直な断面において、基礎３０の間の回転電機１が据え付けられる部分は基礎３０の上面よりも下方に掘り込まれている。すなわち、基礎３０は、固定子枠１２の外周面から回転子１０の回転軸に対する径方向外側に設けられており、固定子枠１２が水平投影面において基礎３０と干渉しない構成となっている。固定子枠１２と基礎３０との配置に関する構成は、水平投影面において固定子枠１２と基礎３０とが干渉しないことが好ましいが、支持部２０が回転電機１を支持できる構成であれば、この配置でなくとも良い。 In a cross section perpendicular to the rotational axis direction of the rotor 10, the portion on which the rotary electric machine 1 is installed between the foundations 30 is dug below the upper surface of the foundation 30. That is, the foundation 30 is provided radially outward of the outer peripheral surface of the stator frame 12 with respect to the rotation axis of the rotor 10, and the stator frame 12 does not interfere with the foundation 30 in the horizontal projection plane. Although it is preferable that the stator frame 12 and the foundation 30 do not interfere with each other on the horizontal projection plane, the configuration relating to the arrangement of the stator frame 12 and the foundation 30 may be any configuration that can support the rotary electric machine 1. It does not have to be arranged.

次に、支持部２０の固定子枠１２への取り付けと、支持部２０の基礎３０への連結について、図３を用いて説明する。図３は、実施形態に係る回転電機の支持部の構成を示す図であって、（ａ）は斜視図、（ｂ）は固定子枠に取り付けた状態を示す概略図である。 Next, attachment of the support portion 20 to the stator frame 12 and connection of the support portion 20 to the base 30 will be described with reference to FIG. FIG. 3 is a view showing the configuration of the support portion of the rotary electric machine according to the embodiment, wherein (a) is a perspective view and (b) is a schematic view showing a state of being attached to a stator frame.

支持部２０は、支持部２０の当接面と取付座２３の取付座当接面とを互いに当接させ、かつ取付座２３の凹部２４ａに支持部２０の凸部２１ａを嵌合するように取付座２３に取り付けられる。すなわち、支持部２０の凸部２１ａを、回転子１０の回転軸方向から取付座２３の凹部２４ａに挿入して支持部２０の凸部２１ａと取付座２３の凹部２４ａを嵌合させる。 The support portion 20 causes the contact surface of the support portion 20 and the attachment seat contact surface of the attachment seat 23 to abut each other, and the projection 21 a of the support portion 20 is fitted in the recess 24 a of the attachment seat 23. It is attached to the mounting seat 23. That is, the convex portion 21 a of the support portion 20 is inserted into the concave portion 24 a of the mounting seat 23 from the rotational axis direction of the rotor 10 to fit the convex portion 21 a of the supporting portion 20 and the concave portion 24 a of the mounting seat 23.

支持部２０を固定子枠１２に取り付けた後に、底面２２が基礎３０に連結される。具体的には、固定子枠１２の長手方向に対する一方に設けられた基礎３０に固定子枠１２の一方の側面の取付座２３に取り付けられた２つの支持部２３の底面２２が連結され、固定子枠１２の長手方向に対する他方に設けられた基礎３０に固定子枠１２の他方の側面の取付座に取り付けられた２つの支持部２３の底面２２が連結される。これら一連の組み立て手順により、回転電機１は、固定子枠１２に取り付けられ、かつ基礎３０に固定された支持部２０に支持される。このようにして、回転電機１が基礎３０に据え付けられる。 After the support portion 20 is attached to the stator frame 12, the bottom surface 22 is connected to the base 30. Specifically, bottom surfaces 22 of two support portions 23 attached to mounting seats 23 on one side surface of stator frame 12 are connected to a base 30 provided on one side with respect to the longitudinal direction of stator frame 12 and fixed Bottoms 22 of two support portions 23 attached to mounting seats on the other side of the stator frame 12 are connected to a base 30 provided on the other side with respect to the longitudinal direction of the sub frame 12. The rotary electric machine 1 is supported by the support portion 20 attached to the stator frame 12 and fixed to the base 30 by the series of assembly procedures. Thus, the rotary electric machine 1 is installed on the foundation 30.

回転電機１が基礎３０に据え付けられると、固定子枠１２の長手方向に垂直な断面（例えばＡ−Ａ断面）において、基礎３０の間の基礎３０の上面よりも掘り込まれた空間に回転電機１の固定子枠１２のうちの取付座２３よりも下側の部分が収まる。回転電機１を基礎３０に据え付けた後、この、基礎３０の間の基礎３０の上面よりも掘り込まれた空間を利用して基礎３０の間の回転電機１の固定子枠１２の下側から回転電機１にアクセスして、電気回路の組立接続作業などを実施する。 When the rotating electrical machine 1 is installed on the foundation 30, the rotating electrical machine is cut into a space excavated from the upper surface of the foundation 30 between the foundations 30 in a cross section perpendicular to the longitudinal direction of the stator frame 12 (for example, A-A cross section). A portion of the first stator frame 12 below the mounting seat 23 is accommodated. After the rotary electric machine 1 is installed on the base 30, the space from the upper surface of the base 30 between the bases 30 is used to make use of the space under the stator frame 12 of the rotary electric machine 1 between the bases 30. The rotary electric machine 1 is accessed to carry out the assembly and connection work of the electric circuit.

上述した実施形態によれば、取付座２３に嵌合部（凸部２１）を、固定子枠１２に被嵌合部（凹部２４ａ）をそれぞれ設け、固定子枠１２と支持部２０とを嵌合させて取り付けることで、ボルトを用いなくとも固定子枠１２を基礎３０に固定して回転電機１を基礎３０に据え付けることができる。したがって、簡易な構造で組立作業を容易に実施できる。また、嵌合部である凸部２１ａと被嵌合部である凹部２３ａは回転子１０の軸方向に延びており、その加工は容易に実施できる。したがって、例えば補修の際に固定子枠１２および支持部２０に加工を施せば、既設の設備にも適用が可能となる。 According to the embodiment described above, the fitting portion (convex portion 21) is provided in the mounting seat 23, and the fitting portion (recessed portion 24a) is provided in the stator frame 12, and the stator frame 12 and the support portion 20 are fitted. By fitting them together, the rotary electric machine 1 can be installed on the base 30 by fixing the stator frame 12 to the base 30 without using a bolt. Therefore, assembly work can be easily performed with a simple structure. Moreover, the convex part 21a which is a fitting part, and the recessed part 23a which is a to-be-fitted part are extended in the axial direction of the rotor 10, The process can be implemented easily. Therefore, for example, if the stator frame 12 and the support portion 20 are processed at the time of repair, application to existing equipment becomes possible.

なお、上述した実施形態において、凸部２１ａは側面２１に設けられたが、取付面２４に被嵌合部として凸部を、側面２１に嵌合部として凹部を設けてもよい。また、凸部２１ａの断面（Ａ−Ａ断面）は、回転電機１を固定子枠１２を介して支持できる任意の形状を採用すればよく、例えば、側面２１から取付座２３に向かって拡がる台形や、側面２１から取付座２３に向かって突出する三角形であってもよい。 In the embodiment described above, the convex portion 21a is provided on the side surface 21, but the convex portion may be provided on the attachment surface 24 as a fitting portion and the concave portion may be provided on the side surface 21 as a fitting portion. Further, the cross section (cross section AA) of the convex portion 21a may adopt any shape capable of supporting the rotary electric machine 1 through the stator frame 12; for example, a trapezoidal shape expanding from the side surface 21 toward the mounting seat 23 Alternatively, it may be a triangle projecting from the side surface 21 toward the mounting seat 23.

さらに、本実施形態において、側面２１と取付面２４をボルト締めする構成としてもよい。この場合、側面２１の当接面および取付面２４の取付座当接面の対応する位置に、ボルトを貫通させるようにボルト穴を複数設ける。すなわち、これらのボルト穴は、側面２１の当接面および取付面２４の取付座当接面の長手方向（回転子１０の回転軸方向）にそれぞれ複数設けられる。 Furthermore, in the present embodiment, the side surface 21 and the mounting surface 24 may be bolted. In this case, a plurality of bolt holes are provided at corresponding positions of the contact surface of the side surface 21 and the mounting seat contact surface of the mounting surface 24 so as to allow the bolts to pass therethrough. That is, a plurality of these bolt holes are provided in the longitudinal direction of the contact surface of the side surface 21 and the attachment seat contact surface of the attachment surface 24 (the rotation axis direction of the rotor 10).

上記の構成を備える場合、側面２１の当接面および取付面２４の取付座当接面にそれぞれ設けられたボルト穴が、互いに対応する位置（すなわち、ボルトを貫通させられる位置）に備わるように支持部２０の凸部２１ａと、固定子枠１２の取付座２３の凹部２４ａとを嵌合させる。その後、これらのボルト穴をボルト締めして、支持部２０を固定子枠１２に取り付ける。 In the case of the above configuration, the bolt holes respectively provided in the contact surface of the side surface 21 and the mounting seat contact surface of the mounting surface 24 are provided at corresponding positions (that is, positions where the bolt can be penetrated). The convex portion 21 a of the support portion 20 and the concave portion 24 a of the mounting seat 23 of the stator frame 12 are fitted. Thereafter, these bolt holes are bolted to attach the support portion 20 to the stator frame 12.

このように、本実施形態において側面２１と取付面２４をボルトにより締結する構成とする場合であっても、固定子枠１２と支持部２０とを嵌合させて取り付ける構成となっていることにより、使用するボルトの本数を少なくでき、ボルトでの締結によって固定子枠１２への支持部２０の取り付けを強固にできる。 As described above, even in the case where the side surface 21 and the mounting surface 24 are fastened by a bolt in the present embodiment, the stator frame 12 and the support portion 20 are fitted and attached. The number of bolts used can be reduced, and the mounting of the support portion 20 to the stator frame 12 can be strengthened by fastening with bolts.

以上説明したように各実施形態によれば、簡易な構造によって容易に組立作業や据付作業が実施できる回転電機およびその製造方法を提供することができる。 As described above, according to each embodiment, it is possible to provide a rotating electrical machine capable of easily performing assembly work and installation work with a simple structure and a method of manufacturing the same.

本発明の実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の趣旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。 While the embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in other various forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

１．回転電機、１０．回転子、１１．固定子、１２．固定子枠、１３．空隙、１４．固定子コイル、２０．支持部、２１．側面、２１ａ．凸部、２２．底面、２３．取付座、２４．取付面、２４ａ．凹部、２５．リブ、３０．基礎 1. Electric rotating machine, 10. Rotor, 11. 12. Stator, 12. Stator frame, 13. Void 14. 20. Stator coil A supporting part, 21. Side, 21a. Convex portion 22. Bottom, 23. Mounting seat, 24. Mounting surface, 24a. Recesses, 25. Rib, 30. Foundation

Claims

Stator frame,
A support comprising a first face having a mating portion and a second face adjacent to the first face and connected to the foundation;
Equipped with
The stator frame has a fitted portion with which the fitting portion is fitted, and has a mounting seat on an outer peripheral surface that abuts on the first surface.

The electric rotating machine according to claim 1, wherein the first surface is perpendicular to the second surface.

The rotary electric machine according to claim 1, wherein the fitting portion is a convex portion protruding from the first surface or a concave portion recessed from the first surface.

An attaching step of fitting the fitting portion provided on the first surface of the support portion to the fitting portion of the mounting seat provided on the outer peripheral surface of the stator frame and attaching the support portion to the mounting seat;
Connecting the second surface adjacent to the first surface of the support to the foundation;
Method of a rotating electrical machine comprising: