JP2017208877A - Rotary electric machine - Google Patents

Rotary electric machine Download PDF

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JP2017208877A
JP2017208877A JP2016097815A JP2016097815A JP2017208877A JP 2017208877 A JP2017208877 A JP 2017208877A JP 2016097815 A JP2016097815 A JP 2016097815A JP 2016097815 A JP2016097815 A JP 2016097815A JP 2017208877 A JP2017208877 A JP 2017208877A
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support member
stator
elastic support
housing
rigid support
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孝明 長嶋
Takaaki Nagashima
孝明 長嶋
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a rotary electric machine which has strength that can withstand torque in a tangential direction of a stator while inhibiting vibration transmitted in a direction perpendicular to an axis of the stator from being transmitted to a housing.SOLUTION: A rotary electric machine includes: a rotor 1 having a rotary shaft; a stator 2 which is disposed so as to enclose the rotor; a stator restraint member 3 disposed around the stator; and a housing 7 covering the stator. An elastic support member having flexibility in a direction perpendicular to an axis of the stator is disposed between the stator restraint member and the housing. A rigid support member is fixed to an inner side of the housing. The elastic support member may contact with the rigid support member when deforming in a tangential direction of the stator.SELECTED DRAWING: Figure 1

Description

本発明は、回転電機に関するものである。   The present invention relates to a rotating electrical machine.

回転電機は、回転軸を有する回転子と、回転子を囲うように設置された固定子と、扇状の鋼板を積層して構成された固定子を拘束するための固定子拘束部材と、固定子を覆うように構成された筐体と、固定子を支持するために固定子拘束部材と筐体との間に配置された弾性支持部材とを有する。   A rotating electrical machine includes a rotor having a rotating shaft, a stator installed so as to surround the rotor, a stator restraining member for restraining a stator configured by stacking fan-shaped steel plates, and a stator A housing configured to cover the stator, and an elastic support member disposed between the stator restraining member and the housing to support the stator.

回転電機では、回転子の回転運動に伴って発生した電磁加振力が回転子と固定子に作用する。この電磁加振力は固定子の半径方向に作用し、回転子の回転運動によって力の分布が時時刻刻と変化する。この電磁加振力が主な原因となり、固定子の軸と直交する方向に固定子が振動する。また、運転開始時または短絡時に、固定子拘束部材と弾性支持部材との取り付け点の接線方向に、定常運転時以上の大きなトルクが発生する。固定子の振動は、弾性支持部材を介して筺体に伝達し、筺体から振動と騒音が発生する問題があった。   In a rotating electrical machine, an electromagnetic excitation force generated with the rotational movement of the rotor acts on the rotor and the stator. This electromagnetic excitation force acts in the radial direction of the stator, and the force distribution changes with time due to the rotational movement of the rotor. This electromagnetic excitation force is the main cause, and the stator vibrates in a direction perpendicular to the stator axis. Further, at the start of operation or at the time of a short circuit, a large torque is generated in the tangential direction of the attachment point between the stator restraining member and the elastic support member. The vibration of the stator is transmitted to the housing through the elastic support member, and there is a problem that vibration and noise are generated from the housing.

従来の発明では、固定子の半径方向に可撓性を有する板状または棒状の弾性支持部材により固定子の半径方向の振動の伝達を低減し、固定子の接線方向のトルクに耐えられる強度を有する回転電機の支持構造が提案されている(特許文献1)。   In the conventional invention, the transmission of vibration in the radial direction of the stator is reduced by a plate-like or bar-like elastic support member having flexibility in the radial direction of the stator, and the strength capable of withstanding the tangential torque of the stator is obtained. A supporting structure for a rotating electrical machine having been proposed (Patent Document 1).

特開2000−50538号公報JP 2000-50538 A

このような回転電機にあっては、弾性支持部材は固定子の半径方向の剛性が接線方向の剛性よりも小さく、半径方向に可撓性を有するため、電磁加振力による固定子の半径方向の振動が筺体に伝達することを抑制することが可能である。また、弾性支持部材は固定子の接線方向の剛性が半径方向の剛性よりも大きいため、運転開始時または短絡時に発生する接線方向の大きなトルクに耐える強度を有する。しかし、その一方で、弾性支持部材の接線方向の剛性が大きいので、固定子の接線方向の振動が筺体に伝達してしまうという問題があった。   In such a rotating electrical machine, the elastic support member has a rigidity in the radial direction of the stator that is smaller than a rigidity in the tangential direction and has flexibility in the radial direction. It is possible to suppress the transmission of vibrations to the housing. Further, the elastic support member has a strength that can withstand a large torque in the tangential direction generated at the start of operation or at the time of a short circuit because the rigidity in the tangential direction of the stator is larger than the rigidity in the radial direction. However, on the other hand, since the rigidity of the elastic support member in the tangential direction is large, there has been a problem that vibration in the tangential direction of the stator is transmitted to the housing.

この発明は、上記のような問題点を解決するためになされたものであり、固定子の軸と直交する方向の振動が筺体に伝達することを抑制しながらも、固定子の接線方向のトルクに耐えられる強度を有する、回転電機を提供することを目的とする。   The present invention has been made to solve the above-described problems. The torque in the tangential direction of the stator is suppressed while suppressing the vibration in the direction orthogonal to the axis of the stator from being transmitted to the housing. It aims at providing the rotary electric machine which has the intensity | strength which can endure.

上述した目的を達成するため、本発明の回転電機は、回転軸を有する回転子と、前記回転子を囲むように配置された固定子と、前記固定子の周囲に配置された固定子拘束部材と、前記固定子を覆う筺体とを備え、前記固定子の軸と直交する方向に可撓性を有する弾性支持部材が、前記固定子拘束部材と筺体と間に配置されており、前記筺体の内側には、剛性支持部材が固定されており、前記弾性支持部材は、前記固定子の接線方向に変形した場合に前記剛性支持部材と接触可能である。   In order to achieve the above-described object, a rotating electrical machine according to the present invention includes a rotor having a rotation shaft, a stator disposed so as to surround the rotor, and a stator restraining member disposed around the stator. And a housing that covers the stator, and an elastic support member that is flexible in a direction orthogonal to the axis of the stator is disposed between the stator restraining member and the housing, A rigid support member is fixed inside, and the elastic support member can contact the rigid support member when deformed in a tangential direction of the stator.

本発明によれば、固定子の軸と直交する方向の振動が筺体に伝達することを抑制しながらも、固定子の接線方向のトルクに耐えられる強度を有する、回転電機を得ることができる。   According to the present invention, it is possible to obtain a rotating electrical machine having a strength capable of withstanding the torque in the tangential direction of the stator while suppressing the vibration in the direction perpendicular to the axis of the stator from being transmitted to the housing.

本発明の実施の形態1による回転電機を示す断面図である。It is sectional drawing which shows the rotary electric machine by Embodiment 1 of this invention. 本発明の実施の形態1による回転電機を示す横断面図である。It is a cross-sectional view which shows the rotary electric machine by Embodiment 1 of this invention. 本発明の実施の形態2による回転電機を示す断面図である。It is sectional drawing which shows the rotary electric machine by Embodiment 2 of this invention. 本発明の実施の形態3による回転電機を示す断面図である。It is sectional drawing which shows the rotary electric machine by Embodiment 3 of this invention. 本発明の実施の形態4による回転電機を示す断面図である。It is sectional drawing which shows the rotary electric machine by Embodiment 4 of this invention.

以下、本発明の実施の形態について添付図面に基づいて説明する。なお、図中、同一符号は同一又は対応部分を示すものとする。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

実施の形態1.
本発明は、固定子と回転子との間に発生する電磁加振力に起因する固定子の振動の筺体への伝達を低減し、運転開始および短絡時に発生するトルクに耐えられる強度を有する回転電機の固定子の支持構造に関するものであり、図1に、本発明の実施の形態1の回転電機の断面を示す。また、図2は、本発明の実施の形態1の回転電機の横断面図である。
Embodiment 1 FIG.
The present invention reduces the transmission of the stator vibration caused by the electromagnetic excitation force generated between the stator and the rotor to the housing and has a strength capable of withstanding the torque generated at the start of operation and short circuit. FIG. 1 shows a cross section of the rotating electric machine according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the rotating electrical machine according to the first embodiment of the present invention.

本発明の実施の形態1による回転電機において、回転子1を囲うように固定子2が設置されている。固定子2は扇状の電磁鋼板を積層させて形成されており、積層構造を周方向に拘束するために固定子の周囲に固定子拘束部材3が取り付けられている。固定子を覆うように筺体7が配置され、筺体7の内側には、仕切り枠8が配置されている。仕切り枠8は固定子2および固定子拘束部材3と接触しておらず、固定子拘束部材3と仕切り枠8の間には空間9がある。また、仕切り枠8は、回転軸方向に離隔した複数の環状部材からなる。   In the rotating electrical machine according to Embodiment 1 of the present invention, a stator 2 is installed so as to surround the rotor 1. The stator 2 is formed by laminating fan-shaped electromagnetic steel plates, and a stator restraining member 3 is attached around the stator to restrain the laminated structure in the circumferential direction. A housing 7 is disposed so as to cover the stator, and a partition frame 8 is disposed inside the housing 7. The partition frame 8 is not in contact with the stator 2 and the stator restraining member 3, and there is a space 9 between the stator restraining member 3 and the partition frame 8. Further, the partition frame 8 is composed of a plurality of annular members spaced apart in the direction of the rotation axis.

固定子を支持するため固定子拘束部材3には、弾性支持部材6が設置されている。弾性支持部材6は、上板4と下板5とを備えており、上板4の上端部が、固定子拘束部材3に固定子され、下板5の両端が仕切り枠8に接続されている。回転軸を垂線とする図1においてみて、弾性支持部材6は、概ね、固定子の接線方向に延びていると言えるが、より詳細には、下板5は、上板4の下端部において、回転軸を垂線とする図1においてみて、固定子の接線方向と直交する向きに延びており、上板4は、回転軸を垂線とする図1においてみて、下板5の延びる長さよりも長く固定子の接線方向に延びている。よって、回転軸を垂線とする図1においてみて、弾性支持部材6は、概ねT字状をなしている。   An elastic support member 6 is installed on the stator restraining member 3 to support the stator. The elastic support member 6 includes an upper plate 4 and a lower plate 5, the upper end portion of the upper plate 4 is fixed to the stator restraining member 3, and both ends of the lower plate 5 are connected to the partition frame 8. Yes. In FIG. 1 in which the rotation axis is a perpendicular line, it can be said that the elastic support member 6 generally extends in the tangential direction of the stator, but more specifically, the lower plate 5 is formed at the lower end portion of the upper plate 4. As seen in FIG. 1 where the rotation axis is a perpendicular line, the upper plate 4 extends in a direction perpendicular to the tangential direction of the stator. The upper plate 4 is longer than the length of the lower plate 5 as seen in FIG. It extends in the tangential direction of the stator. Therefore, the elastic support member 6 is generally T-shaped as viewed in FIG.

さらに、本実施の形態1の回転電機には、剛性支持部材12が設けられている。本発明では、剛性支持部材は、筺体の内側において、筺体の内面自体または筺体と一体的に固定されている部分に支持されているものとする。本実施の形態1では、剛性支持部材12は、第1部分である下側部材11と、第2部分である上側部材10aと、第3部分である上側部材10bとを備えている。   Further, the rotating electrical machine of the first embodiment is provided with a rigid support member 12. In the present invention, it is assumed that the rigid support member is supported on the inner surface of the housing itself or on a portion fixed integrally with the housing inside the housing. In the first embodiment, the rigid support member 12 includes a lower member 11 that is a first portion, an upper member 10a that is a second portion, and an upper member 10b that is a third portion.

第1部分である下側部材11は、下板5における、上板4が延びる接線方向の一方の向き側の面(下側の面)と、対向するように配置されている。下側部材11は、弾性支持部材6の非変形状態において、下板5と接触しないように配置されている。また、第1部分である下側部材11は、筺体7に支持されている。   The lower member 11 that is the first portion is disposed so as to face one of the tangential surfaces (lower surface) of the lower plate 5 in the tangential direction in which the upper plate 4 extends. The lower member 11 is disposed so as not to come into contact with the lower plate 5 when the elastic support member 6 is not deformed. Further, the lower member 11 that is the first portion is supported by the housing 7.

第2部分である上側部材10aと、第3部分である上側部材10bとは、ともに、下板5における、上板4が延びる接線方向の他方の向き側の面(上側の面)と、対向するように配置されている。なおかつ、第2部分である上側部材10aと、第3部分である上側部材10bとは、上板4が延びる接線方向と直交する方向に関して、上板4の下端部を挟んでいる。すなわち、第2部分である上側部材10aと、第3部分である上側部材10bとは、上板4の下端部における、上板4が延びる接線方向と直交する方向に関して相互に反対側の面と、対向するように配置されている。第2部分である上側部材10aおよび第3部分である上側部材10bは、ともに、弾性支持部材6の非変形状態において、下板5および上板4と接触しないように配置されている。また、これら上側部材10a、10bは、回転軸方向に延びており、上側部材10a、10bの、回転軸方向における両端がともに、仕切り枠8に支持されている。   The upper member 10a that is the second part and the upper member 10b that is the third part are both opposed to the other tangential surface (upper surface) of the lower plate 5 in the tangential direction in which the upper plate 4 extends. Are arranged to be. In addition, the upper member 10a as the second portion and the upper member 10b as the third portion sandwich the lower end portion of the upper plate 4 in the direction perpendicular to the tangential direction in which the upper plate 4 extends. That is, the upper member 10a that is the second portion and the upper member 10b that is the third portion are surfaces opposite to each other in the direction perpendicular to the tangential direction in which the upper plate 4 extends at the lower end portion of the upper plate 4. , Are arranged to face each other. The upper member 10a as the second part and the upper member 10b as the third part are both arranged so as not to contact the lower plate 5 and the upper plate 4 when the elastic support member 6 is not deformed. The upper members 10a and 10b extend in the rotation axis direction, and both ends of the upper members 10a and 10b in the rotation axis direction are supported by the partition frame 8.

本発明の実施の形態1による回転電機の支持構造において、弾性支持部材の上板4は固定子2の半径方向へ可撓性を有しており、下板5は固定子2の接線方向へ可撓性を有している。これにより、弾性支持部材6は固定子2の軸と直交する全ての方向に対して可撓性を有している。   In the rotating electrical machine support structure according to Embodiment 1 of the present invention, the upper plate 4 of the elastic support member has flexibility in the radial direction of the stator 2, and the lower plate 5 extends in the tangential direction of the stator 2. It has flexibility. Thereby, the elastic support member 6 has flexibility in all directions perpendicular to the axis of the stator 2.

回転電機の運転開始時または短絡時に、固定子拘束部材3と弾性支持部材の上板の接続点において、固定子の接線方向に大きなトルクが発生する。このトルク発生した場合、弾性支持部材の下板は大きく変形することになるが、その変形量が定常運転以上になった場合に弾性支持部材の下板5は、剛性支持部材の上側部材10a,10bまたは下側部材11に接触する。   A large torque is generated in the tangential direction of the stator at the connection point between the stator restraining member 3 and the upper plate of the elastic support member at the start of operation of the rotating electrical machine or at the time of a short circuit. When this torque is generated, the lower plate of the elastic support member is greatly deformed. However, when the deformation amount is equal to or higher than the steady operation, the lower plate 5 of the elastic support member is the upper member 10a of the rigid support member. 10b or the lower member 11 is contacted.

この構成によれば、回転電機の定常運転時において、弾性支持部材6が、固定子の半径方向と接線方向に可撓性を有しているため、電磁加振力によって生じた固定子2の軸と直交する全ての方向の振動の筺体7への伝達を低減することが可能である。また、回転電機の運転時または短絡時に大きなトルクが発生し、弾性支持部材の下板5が定常運転時と比較して大きく変形しても、剛性支持部材12が固定子2を支持することで、回転電機の破損を防ぐことが可能である。   According to this configuration, the elastic support member 6 has flexibility in the radial direction and the tangential direction of the stator during steady operation of the rotating electrical machine. It is possible to reduce transmission of vibrations in all directions orthogonal to the axis to the housing 7. Further, even when the rotating electric machine is operated or short-circuited, a large torque is generated, and the rigid support member 12 supports the stator 2 even if the lower plate 5 of the elastic support member is greatly deformed as compared with the steady operation. It is possible to prevent damage to the rotating electrical machine.

短絡時にトルクが発生した場合の弾性支持部材の下板の変位Xは次式で与えられる。
=P/K (1)
式中のPは1個の弾性支持部材6に発生する荷重、Kは弾性支持部材の下板5のばね定数である。
ばね定数Kは次式で与えられる。
=(2AB)/[(C−D)/2] (2)
式中のAは弾性支持部材の下板5の幅、Bは弾性支持部材の下板5の厚さ、Cは弾性支持部材の下板5の長さ、Dは弾性支持部材の上板4の幅、Eは弾性支持部材の下板5の縦弾性係数である。
Displacement X 1 of the lower plate of the resilient support members when the torque is generated during a short circuit is given by the following equation.
X 1 = P / K 1 (1)
P in the equation is a load generated in one elastic support member 6, and K 1 is a spring constant of the lower plate 5 of the elastic support member.
The spring constant K 1 is given by the following equation.
K 1 = (2AB 3 E 1 ) / [(C−D) / 2] 3 (2)
In the formula, A is the width of the lower plate 5 of the elastic support member, B is the thickness of the lower plate 5 of the elastic support member, C is the length of the lower plate 5 of the elastic support member, and D is the upper plate 4 of the elastic support member. , E 1 is the longitudinal elastic modulus of the lower plate 5 of the elastic support member.

短絡時に固定子の支持部にトルクが発生した場合、弾性支持部材の下板5は、剛性支持部材12がなければ、トルクを受けて接線方向にX変形し、破損する恐れがある。この時、弾性支持部材と剛性支持部材との間にXより小さいギャップ(隙間)を設けて剛性支持部材12を設置しておくと、隙間がなくなり、剛性支持部材12がトルクを受けるようになり、破損を防ぐことができる。 If the torque is generated in the support portion of the stator during a short circuit, the lower plate 5 of the elastic support members, if there is no rigid support member 12, X 1 is deformed tangentially under torque, it may be damaged. At this time, the idea to set up a rigid support member 12 provided with a X 1 is smaller than the gap (clearance) between the elastic support member and the rigid support member, the clearance is eliminated, so that the rigid support member 12 is subjected to torque Can prevent damage.

図1において剛性支持部材の上側部材10a,10bは、回転電機の図1の紙面において左右それぞれに2固設置されており、2個分のばね定数Kは次式で与られる。
=(2FG)/[H/2] (3)
式中のFは剛性支持部材の上側部材10の幅、Gは剛性支持部材の上側部材10の厚さ、Hは剛性支持部材の上側部材10の長さ、Eは剛性支持部材の上側部材10の縦弾性係数である。
そして、K>Kであることが望ましい。
In FIG. 1, the upper members 10a and 10b of the rigid support member are fixed to the left and right sides of the sheet of FIG. 1 of the rotating electrical machine, and the spring constant K2 for the two is given by the following equation.
K 2 = (2FG 3 E 2 ) / [H / 2] 3 (3)
The width of the upper member 10 of the F is the rigid support member in the formula, G is the thickness of the upper member 10 of the rigid support member, H is the length of the upper member 10 of the rigid support member, the upper member of the E 2 are rigid support member A longitudinal modulus of elasticity of 10;
And it is desirable that K 2 > K 1 .

剛性支持部材の下側部材の固定子外周接線方向に垂直な断面積は、弾性支持部材の上板の断面積以上であることが望ましい。たとえば、剛性支持部材12は、縦弾性係数が70〜210MPaの材料、アルミニウム、ステンレス、一般構造用圧延鋼材などを用いて構成することができる。また、弾性支持部材6と剛性支持部材12との材料を異なるようにしてもよいが、電磁鋼板から構成される固定子の静荷重(重量)を支えるため、弾性支持部材6としては鉄鋼材が望ましい。   The cross-sectional area perpendicular to the stator outer tangent direction of the lower member of the rigid support member is preferably equal to or greater than the cross-sectional area of the upper plate of the elastic support member. For example, the rigid support member 12 can be configured using a material having a longitudinal elastic modulus of 70 to 210 MPa, aluminum, stainless steel, general structural rolled steel, or the like. In addition, the elastic support member 6 and the rigid support member 12 may be made of different materials. However, in order to support a static load (weight) of a stator composed of an electromagnetic steel plate, a steel material is used as the elastic support member 6. desirable.

以上のように構成された本実施の形態1によれば、弾性支持部材が、固定子の半径方向と接線方向に可撓性を有しているため、電磁加振力によって生じた固定子の軸と直交する方向の振動の筺体への伝達を低減することが可能である。また、回転電機の運転時または短絡時に大きなトルクが発生し、弾性支持部材が定常運転時よりも多く変形しても、弾性支持部材が剛性支持部材に接触することで、固定子が支持され、回転電機の破損を防ぐことが可能である。すなわち、固定子の軸と直交する方向の振動が筺体に伝達することを抑制しながらも、固定子の接線方向のトルクに耐えられる強度を有する、回転電機を得ることができる。   According to the first embodiment configured as described above, the elastic support member has flexibility in the radial direction and the tangential direction of the stator, so that the stator generated by the electromagnetic excitation force is It is possible to reduce the transmission of vibration in the direction orthogonal to the axis to the housing. In addition, when the rotating electric machine is operated or short-circuited, a large torque is generated, and even if the elastic support member is deformed more than during steady operation, the elastic support member comes into contact with the rigid support member, so that the stator is supported. It is possible to prevent damage to the rotating electrical machine. That is, it is possible to obtain a rotating electrical machine having a strength capable of withstanding the torque in the tangential direction of the stator while suppressing the vibration in the direction perpendicular to the axis of the stator from being transmitted to the housing.

実施の形態2.
次に、本発明の実施の形態2について説明する。本実施の形態2は、以下に説明する内容を除いては、上述した実施の形態1と同様であるものとする。図3は、本発明の実施の形態2による回転電機を示す断面図である。
Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described. The second embodiment is the same as the first embodiment described above except for the contents described below. FIG. 3 is a cross-sectional view showing a rotating electrical machine according to Embodiment 2 of the present invention.

本発明の実施の形態2による回転電機において、回転子1を囲うように固定子2が設置されている。積層構造である固定子の周方向を拘束するために、固定子の周囲に固定子拘束部材3が取り付けられ、固定子2を覆うように筺体7が配置されている。   In the rotating electrical machine according to the second embodiment of the present invention, the stator 2 is installed so as to surround the rotor 1. In order to restrain the circumferential direction of the stator having a laminated structure, a stator restraining member 3 is attached around the stator, and a housing 7 is disposed so as to cover the stator 2.

固定子を支持するため、固定子拘束部材3と筺体7との間に角波形の弾性支持部材106が設置されている。より詳細には、弾性支持部材106は、回転軸を垂線とする図3においてみて、コ字状(矩形の一辺を除去した文字状)またはU字状の凹凸が交互に接線方向に並ぶ形状を有している。   In order to support the stator, an elastic support member 106 having an angular waveform is installed between the stator restraining member 3 and the housing 7. More specifically, the elastic support member 106 has a U-shaped (character shape with one side of the rectangle removed) or U-shaped irregularities alternately arranged in the tangential direction as viewed in FIG. Have.

また、本実施の形態2の回転電機は、剛性支持部材112を有する。剛性支持部材112は、複数の部分からなり、それら部分はそれぞれ、回転軸を垂線とする図3においてみて、弾性支持部材106の凹部内に配置されている。換言すると、剛性支持部材112は、弾性支持部材106の角波内に配置され、各剛性支持部材は固定子拘束部材3と弾性支持部材6との接点から垂直に下した直線上にある。また、弾性支持部材の角波の数は1以上であれば良い。   The rotating electrical machine of the second embodiment has a rigid support member 112. The rigid support member 112 includes a plurality of portions, and each of the portions is disposed in the recess of the elastic support member 106 as viewed in FIG. In other words, the rigid support member 112 is disposed within the angular wave of the elastic support member 106, and each rigid support member is on a straight line that extends vertically from the contact point between the stator restraining member 3 and the elastic support member 6. The number of angular waves of the elastic support member may be 1 or more.

本発明の実施の形態2による回転電機の支持構造において、弾性支持部材106は角波形であるので、固定子2の軸と直交する全ての方向に対して可撓性を有している。   In the support structure for a rotating electrical machine according to the second embodiment of the present invention, the elastic support member 106 has an angular waveform, and therefore has flexibility in all directions orthogonal to the axis of the stator 2.

回転電機の運転開始時または短絡時に、固定子拘束部材3と弾性支持部材との接続点において、固定子の接線方向に大きなトルクが発生する。このトルク発生した場合、弾性支持部材106は接線方向に大きく変形することになるが、その変形量の定常運転以上になった場合に弾性支持部材106は、剛性支持部材12に接触する。   A large torque is generated in the tangential direction of the stator at the connection point between the stator restraining member 3 and the elastic support member at the start of operation of the rotating electrical machine or at the time of a short circuit. When this torque is generated, the elastic support member 106 is greatly deformed in the tangential direction, but the elastic support member 106 comes into contact with the rigid support member 12 when the amount of deformation exceeds the steady operation.

この構成によれば、弾性支持部材106が、固定子の半径方向と接線方向に可撓性を有しているため、電磁加振力によって生じた固定子2の軸と直交する方向の振動の筺体7への伝達を低減することが可能である。また、回転電機の運転開始時または短絡時に大きなトルクが発生し、弾性支持部材106が大きく変形しても、剛性支持部材112が固定子2を支持することで、回転電機の破損を防ぐことが可能ある。   According to this configuration, since the elastic support member 106 has flexibility in the radial direction and the tangential direction of the stator, the vibration in the direction orthogonal to the axis of the stator 2 generated by the electromagnetic excitation force is generated. Transmission to the housing 7 can be reduced. Further, even when a large torque is generated at the start of operation or short circuit of the rotating electrical machine and the elastic support member 106 is greatly deformed, the rigid support member 112 supports the stator 2 to prevent the rotating electrical machine from being damaged. It is possible.

短絡時にトルクが発生した場合の弾性支持部材106の変位Xは次式で与えられる。
=P/K (4)
式中のKは弾性支持部材106のばね定数である。
Displacement X 2 of the elastic support member 106 when torque is generated during a short circuit is given by the following equation.
X 2 = P / K 2 (4)
K 2 in the equation is a spring constant of the elastic support member 106.

ばね定数Kは次式で与えられる。
=(IJ)/[4(N+N)] (5)
式中のIは弾性支持部材106の幅(図2のDに相当)、Jは弾性支持部材106の厚さ、Lは弾性支持部材106の接線方向と平行な部位の長さ、Mは弾性支持部材106の接線方向と垂直な部位の長さ、Nは長さL部の数、Nは長さM部の数、Eは弾性支持部材106の縦弾性係数である。短絡時に固定子の支持部にトルクが発生した場合、弾性支持部材106は、剛性支持部材112がなければ、トルクを受けて接線方向にX変形し、破損する恐れがある。この時、弾性支持部材と剛性支持部材との間にXより小さいギャップ(隙間)を設けて剛性支持部材112を設置しておくと、隙間がなくなり、剛性支持部材112がトルクを受けるようになり、破損を防ぐことができる。
The spring constant K 2 is given by the following equation.
K 2 = (IJ 3 E 3 ) / [4 (N 1 L 3 + N 2 M 3 )] (5)
In the formula, I is the width of the elastic support member 106 (corresponding to D in FIG. 2), J is the thickness of the elastic support member 106, L is the length of the portion parallel to the tangential direction of the elastic support member 106, and M is the elasticity. The length of the part perpendicular to the tangential direction of the support member 106, N 1 is the number of length L parts, N 2 is the number of length M parts, and E 3 is the longitudinal elastic modulus of the elastic support member 106. If the torque is generated in the support portion of the stator at the time of short circuit, the elastic support member 106, if there is no rigid support member 112, X 2 is deformed tangentially under torque, it may be damaged. At this time, the idea to set up a rigid support member 112 provided X 2 is smaller than the gap (clearance) between the elastic support member and the rigid support member, the clearance is eliminated, so that the rigid support member 112 is subjected to torque Can prevent damage.

剛性支持部材112の固定子外周接線方向に垂直な断面積は、弾性支持部材106の断面積以上であることが望ましい。   The cross-sectional area perpendicular to the stator outer peripheral tangent direction of the rigid support member 112 is preferably equal to or greater than the cross-sectional area of the elastic support member 106.

弾性支持部材106と剛性支持部材112との材料を異なるようにしてもよいが、電磁鋼板から構成される固定子の静荷重(重量)を支えるため、弾性支持部材106として鉄鋼材が望ましい。たとえば、縦弾性係数が70〜210MPaの材料、アルミニウム、ステンレス、一般構造用圧延鋼材などを用いてもよい。   Although the elastic support member 106 and the rigid support member 112 may be made of different materials, a steel material is desirable as the elastic support member 106 in order to support a static load (weight) of a stator composed of an electromagnetic steel plate. For example, a material having a longitudinal elastic modulus of 70 to 210 MPa, aluminum, stainless steel, general structural rolled steel, or the like may be used.

実施の形態3.
次に、本発明の実施の形態3について説明する。本実施の形態3は、以下に説明する内容を除いては、上述した実施の形態2と同様であるものとする。図4は、本発明の実施の形態3による回転電機を示す断面図である。
Embodiment 3 FIG.
Next, a third embodiment of the present invention will be described. The third embodiment is the same as the second embodiment described above except for the contents described below. FIG. 4 is a cross-sectional view showing a rotating electrical machine according to Embodiment 3 of the present invention.

本発明の実施の形態3による回転電機において、回転子1を囲うように固定子2が設置されている。積層構造である固定子の周方向を拘束するために、固定子の周囲に固定子拘束部材3が取り付けられ、固定子2を覆うように筺体7が配置されている。   In the rotating electrical machine according to Embodiment 3 of the present invention, a stator 2 is installed so as to surround the rotor 1. In order to restrain the circumferential direction of the stator having a laminated structure, a stator restraining member 3 is attached around the stator, and a housing 7 is disposed so as to cover the stator 2.

固定子を支持するため、固定子拘束部材3と筺体7との間に角波形の弾性支持部材206が設置されている。より詳細には、弾性支持部材206は、回転軸を垂線とする図4においてみて、コ字状(矩形の一辺を除去した文字状)またはU字状の凹凸が交互に接線方向に並ぶ形状を有している。   In order to support the stator, an elastic support member 206 having an angular waveform is installed between the stator restraining member 3 and the housing 7. More specifically, the elastic support member 206 has a U-shaped (character shape with one side of the rectangle removed) or U-shaped irregularities alternately arranged in the tangential direction as viewed in FIG. Have.

また、本実施の形態3の回転電機は、剛性支持部材212を有する。剛性支持部材212は、複数の部分からなり、それら一部は、回転軸を垂線とする図4においてみて、弾性支持部材206の凹部内に配置されている。また、剛性支持部材212の別の一部は、筺体7から延び、且つ、剛性支持部材212において筺体7から延びる部分と沿うように配置されている。換言すると、剛性支持部材212の一部は、弾性支持部材206の角波内に配置され、剛性支持部材212は、各剛性支持部材は固定子拘束部材3と弾性支持部材206との接点から垂直に下した直線上にある。また、弾性支持部材の角波の数は1以上であれば良い。   Further, the rotating electrical machine of the third embodiment has a rigid support member 212. The rigid support member 212 includes a plurality of portions, and some of the portions are disposed in the recesses of the elastic support member 206 as viewed in FIG. Further, another part of the rigid support member 212 extends from the housing 7 and is disposed along the portion of the rigid support member 212 that extends from the housing 7. In other words, a part of the rigid support member 212 is disposed within the angular wave of the elastic support member 206, and each of the rigid support members 212 is perpendicular to the contact between the stator restraining member 3 and the elastic support member 206. It is on the straight line. The number of angular waves of the elastic support member may be 1 or more.

本発明の実施の形態3による回転電機の支持構造において、弾性支持部材206は角波形であるので、固定子2の軸と直交する全ての方向に対して可撓性を有している。   In the support structure for a rotating electrical machine according to Embodiment 3 of the present invention, the elastic support member 206 has an angular waveform, and therefore has flexibility in all directions orthogonal to the axis of the stator 2.

回転電機の運転開始時または短絡時に、固定子拘束部材3と弾性支持部材との接続点において、固定子の接線方向に大きなトルクが発生する。このトルク発生した場合、弾性支持部材206は接線方向に大きく変形することになるが、その変形量の定常運転以上になった場合に弾性支持部材206は、剛性支持部材212に接触する。   A large torque is generated in the tangential direction of the stator at the connection point between the stator restraining member 3 and the elastic support member at the start of operation of the rotating electrical machine or at the time of a short circuit. When this torque is generated, the elastic support member 206 is greatly deformed in the tangential direction, but the elastic support member 206 comes into contact with the rigid support member 212 when the amount of deformation exceeds the steady operation.

この構成によれば、弾性支持部材206が、固定子の半径方向と接線方向に可撓性を有しているため、電磁加振力によって生じた固定子2の軸と直交する方向の振動の筺体7への伝達を低減することが可能である。また、回転電機の運転開始時または短絡時に大きなトルクが発生し、弾性支持部材206が大きく変形しても、剛性支持部材212が固定子2を支持することで、回転電機の破損を防ぐことが可能ある。   According to this configuration, since the elastic support member 206 has flexibility in the radial direction and tangential direction of the stator, vibration in a direction perpendicular to the axis of the stator 2 generated by the electromagnetic excitation force is generated. Transmission to the housing 7 can be reduced. Further, even when a large torque is generated at the start of operation of the rotating electrical machine or at a short circuit and the elastic support member 206 is greatly deformed, the rigid support member 212 supports the stator 2, thereby preventing the rotating electrical machine from being damaged. It is possible.

実施の形態4.
次に、本発明の実施の形態4について説明する。本実施の形態4は、以下に説明する内容を除いては、上述した実施の形態1と同様であるものとする。図5は、本発明の実施の形態4による回転電機を示す断面図である。
Embodiment 4 FIG.
Next, a fourth embodiment of the present invention will be described. The fourth embodiment is the same as the first embodiment described above except for the contents described below. FIG. 5 is a cross-sectional view showing a rotating electrical machine according to Embodiment 4 of the present invention.

本発明の実施の形態4による回転電機において、回転子1を囲うように固定子2が設置されている。固定子2には周方向を拘束するための固定子拘束部材3が固定子の周囲には配置され、固定子を覆うように筺体7が配置されている。なお、本実施の形態4では、後述する構成に伴い、回転子1の中心および固定子2の中心は、筺体7の中心からずれている(弾性支持部材306の筺体7側の基部と反対側にずれている)。   In the rotating electrical machine according to the fourth embodiment of the present invention, the stator 2 is installed so as to surround the rotor 1. A stator restraining member 3 for restraining the circumferential direction of the stator 2 is disposed around the stator, and a housing 7 is disposed so as to cover the stator. In the fourth embodiment, the center of the rotor 1 and the center of the stator 2 are deviated from the center of the housing 7 due to the configuration described later (the side opposite to the base of the elastic support member 306 on the housing 7 side). ).

半円部を有する板状の弾性支持部材306が固定子拘束部材3と筺体7との間に固定子2を支持するように配置されている。上側部材310と下側部材311とを備えている剛性支持部材312が、2個の弾性支持部材に挟まれるように配置されている。上側部材10の下端部と、下側部材11の上端部とは、鉤状になっており、その鉤状は、互いに組み合うように向き合っている。より詳細には、対応する一対の弾性支持部材306の一対の半円部の中に、対応する一対の鉤状の部分が組み合って収容されている。   A plate-like elastic support member 306 having a semicircular portion is arranged between the stator restraining member 3 and the housing 7 so as to support the stator 2. A rigid support member 312 including an upper member 310 and a lower member 311 is disposed so as to be sandwiched between two elastic support members. The lower end portion of the upper member 10 and the upper end portion of the lower member 11 have a hook shape, and the hook shapes face each other so as to be combined with each other. More specifically, a corresponding pair of hook-shaped portions are accommodated in a pair of semicircular portions of a corresponding pair of elastic support members 306.

本発明の実施の形態4による回転電機の支持構造において、弾性支持部材306は半円部を有しているので、固定子2の軸と直交する全ての方向に対して可撓性を有している。   In the rotating electrical machine support structure according to Embodiment 4 of the present invention, since the elastic support member 306 has a semicircular portion, it has flexibility in all directions orthogonal to the axis of the stator 2. ing.

回転電機の運転開始時または短絡時生じたトルクによって、弾性支持部材306が大きく変形した場合、剛性支持部材の上側部材と下側部材は接触する。   When the elastic support member 306 is greatly deformed by the torque generated at the start of operation of the rotating electrical machine or at the time of a short circuit, the upper member and the lower member of the rigid support member come into contact with each other.

この構成によれば、弾性支持部材306が、固定子の半径方向と接線方向に可撓性を有しているため、電磁加振力によって生じた固定子2の軸と直交する方向の振動の筺体7への伝達を低減することが可能である。また、回転電機の運転開始時または短絡時に生じたトルクによって弾性支持部材306が大きく変形しても、剛性支持部材312が固定子2を支持するため、回転電機の破損を防ぐことが可能ある。   According to this configuration, since the elastic support member 306 has flexibility in the radial direction and the tangential direction of the stator, the vibration in the direction perpendicular to the axis of the stator 2 generated by the electromagnetic excitation force is generated. Transmission to the housing 7 can be reduced. Further, even if the elastic support member 306 is greatly deformed by the torque generated at the start of operation of the rotating electrical machine or at the time of a short circuit, the rigid supporting member 312 supports the stator 2, so that the rotating electrical machine can be prevented from being damaged.

短絡時にトルクが発生した場合の弾性支持部材6の変位Xは次式で与えられる。
=P/K (6)
Displacement X 3 elastic support members 6 when the torque is generated during a short circuit is given by the following equation.
X 3 = P / K 3 (6)

図5において、回転電機の左右にそれぞれに円弧状の弾性支持部材が2個設置してあり、Kは円弧2個分のばね定数である。
ばね定数Kは次式で与えられる。
=6QR/S (7)
式中のQは弾性支持部材306の幅(図2のDに相当)、Rは弾性支持部材306の厚さ(図3のJに相当)、Sは弾性支持部材306の円弧の長さ、Eは弾性支持部材306の縦弾性係数である。短絡時に固定子の支持部にトルクが発生した場合、弾性支持部材306は、剛性支持部材312がなければ、トルクを受けて接線方向にX変形し、破損する恐れがある。この時、X未満で剛性支持部材の鉤状の部位同士が接触するように剛性支持部材312を設置しておくと、隙間がなくなり、剛性支持部材312がトルクを受けるようになり、破損を防ぐことができる。
5, arc-shaped elastic support members respectively to the left and right rotary electric machine Yes installed two, K 3 is the spring constant of the two partial arcs.
The spring constant K 3 is given by the following equation.
K 3 = 6QR 3 E 4 / S 3 (7)
In the formula, Q is the width of the elastic support member 306 (corresponding to D in FIG. 2), R is the thickness of the elastic support member 306 (corresponding to J in FIG. 3), S is the length of the arc of the elastic support member 306, E 4 is a longitudinal elastic modulus of the elastic support member 306. If the torque is generated in the support portion of the stator during a short circuit, the elastic support member 306, if there is no rigid support member 312, X 2 is deformed tangentially under torque, it may be damaged. At this time, the site between the hook-shaped rigid support member is less than X 3 is kept by installing a rigid support member 312 so as to contact, the clearance is eliminated, the rigid support member 312 is to receive a torque, the damage Can be prevented.

剛性支持部材312の鉤状の部位同士が接触する断面積は、弾性支持部材306の固定子外周接線方向に垂直な断面積以上であることが望ましい。   It is desirable that the cross-sectional area where the flange-shaped portions of the rigid support member 312 contact each other is equal to or larger than the cross-sectional area perpendicular to the stator outer tangent direction of the elastic support member 306.

弾性支持部材306と剛性支持部材312との材料を異なるようにしてもよいが、電磁鋼板から構成される固定子の静荷重(重量)を支えるため、弾性支持部材306として鉄鋼材が望ましい。たとえば、縦弾性係数が70〜210MPaの材料、アルミニウム、ステンレス、一般構造用圧延鋼材などを用いてもよい。   Although the elastic support member 306 and the rigid support member 312 may be made of different materials, a steel material is desirable as the elastic support member 306 in order to support a static load (weight) of a stator composed of an electromagnetic steel plate. For example, a material having a longitudinal elastic modulus of 70 to 210 MPa, aluminum, stainless steel, general structural rolled steel, or the like may be used.

以上、好ましい実施の形態を参照して本発明の内容を具体的に説明したが、本発明の基本的技術思想及び教示に基づいて、当業者であれば、種々の改変態様を採り得ることは自明である。   Although the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical idea and teachings of the present invention. It is self-explanatory.

1 回転子、2 固定子、3 固定子拘束部材、6、106、206、306 弾性支持部材、7 筺体、12、112、212、312 剛性支持部材、10a、10b、310 上側部材、11、311 下側部材。   DESCRIPTION OF SYMBOLS 1 Rotor, 2 Stator, 3 Stator restraint member, 6, 106, 206, 306 Elastic support member, 7 Housing, 12, 112, 212, 312 Rigid support member, 10a, 10b, 310 Upper member, 11, 311 Lower member.

Claims (5)

回転軸を有する回転子と、
前記回転子を囲むように配置された固定子と、
前記固定子の周囲に配置された固定子拘束部材と、
前記固定子を覆う筺体とを備え、
前記固定子の軸と直交する方向に可撓性を有する、弾性支持部材が、前記固定子拘束部材と筺体と間に配置されており、
前記筺体の内側には、剛性支持部材が固定されており、
前記弾性支持部材は、前記固定子の接線方向に変形した場合に前記剛性支持部材と接触可能である、
回転電機。
A rotor having a rotation axis;
A stator arranged to surround the rotor;
A stator restraining member disposed around the stator;
A housing that covers the stator,
An elastic support member having flexibility in a direction perpendicular to the axis of the stator is disposed between the stator restraining member and the housing,
A rigid support member is fixed inside the housing,
The elastic support member can contact the rigid support member when deformed in a tangential direction of the stator.
Rotating electric machine.
前記弾性支持部材は、上板と下板とを備えており、
前記下板は、前記上板の下端部において、前記固定子の接線方向と直交する向きに延びており、
前記上板は、前記下板の延びる長さよりも長く前記固定子の接線方向に延びており、
前記剛性支持部材は、第1部分である下側部材と、第2部分である上側部材と、第3部分である上側部材とを備えており、
前記第1部分である下側部材は、前記下板における、前記上板が延びる接線方向の一方の向き側の面と、対向するように配置されており、
前記第2部分である上側部材と、前記第3部分である上側部材とは、ともに、前記下板における、前記上板が延びる接線方向の他方の向き側の面と、対向するように配置されており、
前記第2部分である上側部材と、前記第3部分である上側部材とは、前記上板が延びる接線方向と直交する方向に関して、前記上板を挟んでいる、
請求項1の回転電機。
The elastic support member includes an upper plate and a lower plate,
The lower plate extends in a direction perpendicular to the tangential direction of the stator at the lower end of the upper plate,
The upper plate extends in the tangential direction of the stator longer than the length of the lower plate;
The rigid support member includes a lower member that is a first portion, an upper member that is a second portion, and an upper member that is a third portion,
The lower member, which is the first portion, is disposed so as to face the surface on one side of the tangential direction in which the upper plate extends in the lower plate,
The upper member, which is the second part, and the upper member, which is the third part, are both disposed so as to face the surface of the lower plate on the other tangential side in which the upper plate extends. And
The upper member that is the second portion and the upper member that is the third portion sandwich the upper plate with respect to a direction orthogonal to a tangential direction in which the upper plate extends.
The rotating electrical machine according to claim 1.
前記弾性支持部材は、凹凸が交互に接線方向に並ぶ形状を有しており、
前記剛性支持部材は、複数の部分からなり、それら部分はそれぞれ、前記弾性支持部材の凹部内に配置されている、
請求項1の回転電機。
The elastic support member has a shape in which irregularities are alternately arranged in a tangential direction,
The rigid support member is composed of a plurality of portions, each of which is disposed in a recess of the elastic support member.
The rotating electrical machine according to claim 1.
前記弾性支持部材は、凹凸が交互に接線方向に並ぶ形状を有しており、
前記剛性支持部材は、複数の部分からなり、それら一部は、前記弾性支持部材の凹部内に配置されており、
前記剛性支持部材の別の一部は、前記筺体から延び、且つ、前記剛性支持部材において前記筺体から延びる部分と沿うように配置されている、
請求項1の回転電機。
The elastic support member has a shape in which irregularities are alternately arranged in a tangential direction,
The rigid support member is composed of a plurality of parts, some of which are disposed in the recesses of the elastic support member,
Another part of the rigid support member extends from the housing and is arranged along a portion of the rigid support member that extends from the housing.
The rotating electrical machine according to claim 1.
前記剛性支持部材は、上側部材と下側部材とを備えており、
前記上側部材の下端部と、前記下側部材の上端部とは、鉤状になっており、鉤状は、互いに組み合うように向き合っており、
前記剛性支持部材が、2つの前記弾性支持部材に挟まれるように配置されている、
請求項1の回転電機。
The rigid support member includes an upper member and a lower member,
The lower end portion of the upper member and the upper end portion of the lower member have a hook shape, and the hook shapes face each other so as to be combined with each other,
The rigid support member is disposed so as to be sandwiched between the two elastic support members.
The rotating electrical machine according to claim 1.
JP2016097815A 2016-05-16 2016-05-16 Rotary electric machine Pending JP2017208877A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
JP2016097815A JP2017208877A (en) 2016-05-16 2016-05-16 Rotary electric machine

Publications (1)

Publication Number Publication Date
JP2017208877A true JP2017208877A (en) 2017-11-24

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Family Applications (1)

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Country Status (1)

Country Link
JP (1) JP2017208877A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116760229A (en) * 2023-06-27 2023-09-15 光陆机电有限公司 Stable three-phase asynchronous motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116760229A (en) * 2023-06-27 2023-09-15 光陆机电有限公司 Stable three-phase asynchronous motor
CN116760229B (en) * 2023-06-27 2024-01-23 光陆机电有限公司 Stable three-phase asynchronous motor

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