JPH0532830U - Auxiliary bearing of magnetic bearing device - Google Patents
Auxiliary bearing of magnetic bearing deviceInfo
- Publication number
- JPH0532830U JPH0532830U JP8904491U JP8904491U JPH0532830U JP H0532830 U JPH0532830 U JP H0532830U JP 8904491 U JP8904491 U JP 8904491U JP 8904491 U JP8904491 U JP 8904491U JP H0532830 U JPH0532830 U JP H0532830U
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- magnetic bearing
- bracket
- auxiliary
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
(57)【要約】
【構成】回転軸に設けた磁気軸受ロータと、前記磁気軸
受ロータに空隙を介して固定子枠に支持された磁気軸受
ステータとを備えた磁気軸受装置において、固定子枠の
端面に取り付けたブラケットと、回転軸の外周と内輪内
周との間に間隙を介して対向させた補助軸受と、この補
助軸受の外周に固定した軸受ハウジングとを設け、ブラ
ケット内周面と、軸受ハウジング外周面との係合面を円
錐状に形成し、ブラケット内周面に軸受ハウジングの外
周面を係合固定するようにしている。
【効果】固定子枠からブラケットを取り外すことなく、
補助軸受と一体に軸受ハウジングを回転軸の軸線方向に
移動して補助軸受がない状態を実現でき、磁気軸受のギ
ャップ調整が簡単となる。
(57) [Summary] [Structure] A magnetic bearing device comprising a magnetic bearing rotor provided on a rotating shaft, and a magnetic bearing stator supported by a stator frame through a gap in the magnetic bearing rotor, comprising a stator frame. A bracket attached to the end surface of the rotating shaft, an auxiliary bearing facing the outer circumference of the rotating shaft and the inner circumference of the inner ring with a gap, and a bearing housing fixed to the outer circumference of the auxiliary bearing. The engaging surface with the outer peripheral surface of the bearing housing is formed into a conical shape, and the outer peripheral surface of the bearing housing is engaged and fixed to the inner peripheral surface of the bracket. [Effect] Without removing the bracket from the stator frame,
The bearing housing can be moved integrally with the auxiliary bearing in the axial direction of the rotating shaft to realize a state without the auxiliary bearing, and the gap adjustment of the magnetic bearing becomes easy.
Description
【０００１】[0001]
本考案は、高速で回転する回転電機などの回転軸を支持する磁気軸受装置の補 助軸受に関する。 The present invention relates to an auxiliary bearing of a magnetic bearing device that supports a rotating shaft of a rotating electric machine that rotates at high speed.
【０００２】[0002]
従来の磁気軸受装置は、図２に示すように、回転軸１に２つのラジアル用の磁 気軸受ロータ２、２とその間に駆動用ロータ３が密着して固定され、回転軸１と 一体になって回転するようにしてある。磁気軸受ロータ２、２の外周には空隙を 介して磁気軸受ステータ４、４が配置されており、磁気軸受ロータ２の磁力作用 により回転軸１の偏心をゼロに保つように磁気軸受ステータ４が作り出す磁場を 制御することにより、回転軸１を非接触で軸受支持させる。駆動用ロータ３の外 周には空隙を介して駆動用ステータ５が配置され、駆動用ロータ３とともにモー タとして動作し、回転軸１を駆動するようにしてある。回転軸１の負荷側には円 板状のスラスト軸受用の磁気軸受ステータ（図示せず）が設けられており、前記 磁気軸受ロータと空隙を介して磁気軸受ステータが配置されている。固定子枠６ にはブラケット８が設けられ、このブラケットに磁気軸受の電源が回転中に停止 したときなどに支持する非常用の補助軸受７が取り付けてある。 In the conventional magnetic bearing device, as shown in FIG. 2, two radial magnetic bearing rotors 2 and 2 and a driving rotor 3 are closely attached and fixed to a rotary shaft 1 so as to be integrated with the rotary shaft 1. It is designed to rotate. Magnetic bearing stators 4 and 4 are arranged on the outer circumferences of the magnetic bearing rotors 2 and 2 with a gap therebetween, and the magnetic bearing stator 4 is maintained so that the eccentricity of the rotating shaft 1 is kept to zero by the magnetic action of the magnetic bearing rotor 2. By controlling the magnetic field to be produced, the rotating shaft 1 is supported by a bearing in a non-contact manner. A driving stator 5 is arranged on the outer periphery of the driving rotor 3 with a gap therebetween, and operates as a motor together with the driving rotor 3 to drive the rotating shaft 1. A disk-shaped magnetic bearing stator (not shown) for a thrust bearing is provided on the load side of the rotary shaft 1, and the magnetic bearing stator is arranged via a gap with the magnetic bearing rotor. A bracket 8 is provided on the stator frame 6, and an emergency auxiliary bearing 7 is attached to the bracket to support the magnetic bearing when the power source of the magnetic bearing stops during rotation.
【０００３】[0003]
このような、従来の磁気軸受装置の補助軸受は、ロータの位置の制御に必要な 変位センサの出力信号を調整するため、固定子枠からブラケットを取り外し、軸 端に取り付けてある負荷機械も取り外して変位センサの出力信号を調整した後、 ブラケットを固定子枠に取り付けており、信号調整が面倒であった。また、ブラ ッケットの端面より変位センサの信号線を取り出しているときは、信号線が断線 する欠点があった。 本考案は、上記課題を解決するためになされたもので、固定子枠からブラケッ トを取り外すことなく調整できるようにした磁気軸受装置の補助軸受を提供する ことを目的とする。 The auxiliary bearing of such a conventional magnetic bearing device adjusts the output signal of the displacement sensor required for controlling the rotor position, so that the bracket is removed from the stator frame and the load machine attached to the shaft end is also removed. After adjusting the output signal of the displacement sensor with the bracket, the bracket was attached to the stator frame, and the signal adjustment was troublesome. Moreover, when the signal line of the displacement sensor was taken out from the end face of the bracket, there was a defect that the signal line was broken. The present invention has been made to solve the above problems, and an object thereof is to provide an auxiliary bearing for a magnetic bearing device that can be adjusted without removing the bracket from the stator frame.
【０００４】[0004]
回転軸に設けた磁気軸受ロータと、前記磁気軸受ロータに空隙を介して固定子 枠に支持された磁気軸受ステータとを備えた磁気軸受装置において、固定子枠の 端面に取り付けたブラケットと、回転軸外周に間隙介して対向させた補助軸受を 保持する軸受ハウジングとを設け、ブラケット内周面と、軸受ハウジング外周面 との係合面を円錐状に形成して、軸受ハウジングをブラケットに係合固定したも のである。 In a magnetic bearing device comprising a magnetic bearing rotor provided on a rotating shaft and a magnetic bearing stator supported by a stator frame through a gap in the magnetic bearing rotor, a bracket mounted on an end face of the stator frame, A bearing housing that holds auxiliary bearings facing each other with a gap on the outer circumference of the shaft is provided, and the engagement surface between the bracket inner peripheral surface and the bearing housing outer peripheral surface is formed into a conical shape, and the bearing housing is engaged with the bracket. It is fixed.
【０００５】[0005]
したがって、円錐面を介してブラケットに軸受ハウジングが取り付けネジで固 定されているときは、軸受が補助軸受として機能し、磁気軸受ロータは補助軸受 があるため稼働範囲が拘束されている。しかし軸受ハウジングをブラケットに固 定しているネジを緩めることによりブラケットと軸受ハウジングが接している円 錐面の間に空隙が生じ、この空隙が生じたことにより磁気軸受ロータが自由に動 いても補助軸受は磁気軸受ロータのこの動きを拘束せず、モータを分解せずに補 助軸受がない状態を実現できるのである。 Therefore, when the bearing housing is fixed to the bracket via the conical surface with the mounting screw, the bearing functions as an auxiliary bearing, and the magnetic bearing rotor has the auxiliary bearing, so the operating range is restricted. However, by loosening the screws that secure the bearing housing to the bracket, a gap is created between the conical surface where the bracket and bearing housing are in contact, and even if the magnetic bearing rotor moves freely due to this gap. The auxiliary bearing does not restrain this movement of the magnetic bearing rotor, and it is possible to realize the state without the auxiliary bearing without disassembling the motor.
【０００６】[0006]
以下本案を図１に示す実施例について説明する。図２と同一のものには同一の 符号を付して詳細な説明を省略する。 ９は固定子枠６の端面に固定したブラケツトで、その内側に回転軸の軸線方向 に円錐状の係合面１０が設けてある。１１は軸受ハウジングで内周に補助軸受を 保持し、外周に前記係合面に対向する円錐状の係合面１２が設けられている。１ ３は、軸受ハウジングをブラケットに固定するネジである。 図１は回転軸と軸受とは非接触の状態を示しており、磁気軸受装置のトラブル 等により磁気軸受ロータが浮上しなくなっても補助軸受が回転軸を支持する。磁 気軸受装置の磁気軸受ロータと磁気軸受ステータのギャップを調整するときネジ １３を緩めるとブラケット９と軸受ハウジング１１との間に円錐面の空隙ができ 、軸受ハウジング１１は回転軸の軸線方向に自由に動くことができるようになり 補助軸受がない状態を実現できる。次に、ネジ１３を締めていくと軸受ハウジン グ１１がブラケット９に引きつけられていき円錐面を介して固着され、元の状態 に戻ることができる。図では、回転軸の外周に磁気軸受ロータおよび駆動用ロー タを固定するように下が、回転軸に磁気軸受ロータおよび駆動用ロータを埋め込 むようにしてもよい。 The present invention will be described below with reference to the embodiment shown in FIG. The same parts as those in FIG. 2 are designated by the same reference numerals and detailed description thereof will be omitted. Reference numeral 9 is a bracket fixed to the end surface of the stator frame 6, and a conical engaging surface 10 is provided inside the bracket in the axial direction of the rotating shaft. Reference numeral 11 denotes a bearing housing, which holds an auxiliary bearing on the inner circumference thereof, and is provided with a conical engagement surface 12 on the outer circumference facing the engagement surface. Reference numeral 13 is a screw for fixing the bearing housing to the bracket. FIG. 1 shows a state where the rotary shaft and the bearing are not in contact with each other, and the auxiliary bearing supports the rotary shaft even if the magnetic bearing rotor does not float due to a trouble of the magnetic bearing device. When adjusting the gap between the magnetic bearing rotor and the magnetic bearing stator of the magnetic bearing device, loosening the screw 13 creates a conical space between the bracket 9 and the bearing housing 11, and the bearing housing 11 extends in the axial direction of the rotating shaft. It is possible to move freely, and it is possible to realize the state without auxiliary bearings. Next, when the screw 13 is tightened, the bearing housing 11 is attracted to the bracket 9 and fixed through the conical surface, and the original state can be restored. In the figure, the magnetic bearing rotor and the drive rotor may be fixed to the outer circumference of the rotary shaft, or the magnetic bearing rotor and the drive rotor may be embedded in the rotary shaft.
【０００７】[0007]
以上説明したように、モータフレームからブラケットを取り外すことなく、軸 受ハウジングをブラケットに取り付けているネジを緩めるだけで補助軸受と一体 に軸受ハウジングを取り外すことが出来、磁気軸受のギャップの調整が簡単に出 来る。 As explained above, the bearing housing can be removed together with the auxiliary bearing by simply loosening the screws that attach the bearing housing to the bracket without removing the bracket from the motor frame, making it easy to adjust the magnetic bearing gap. Come to.
【図１】 本考案の実施例を示す要部断面図FIG. 1 is a sectional view of an essential part showing an embodiment of the present invention.
【図２】 従来の磁気軸受装置の要部断面図FIG. 2 is a sectional view of a main part of a conventional magnetic bearing device.
【符号の説明】 １ 回転軸 ２ 磁気軸受ロータ ３ 駆動用ロータ ４ 磁気軸受ステータ ５ 駆動用ステータ ６ 固定子枠 ７ 補助軸受 ８ ブラケット ９ ブラケット １０係合面 １１軸受ハウジング １２係合面 １３ネジ[Explanation of symbols] 1 rotating shaft 2 magnetic bearing rotor 3 driving rotor 4 magnetic bearing stator 5 driving stator 6 stator frame 7 auxiliary bearing 8 bracket 9 bracket 10 engaging surface 11 bearing housing 12 engaging surface 13 screw
Claims (1)
磁気軸受ロータに空隙を介して固定子枠に支持された磁
気軸受ステータとを備えた磁気軸受装置において、固定
子枠の端面に取り付けたブラケットと、回転軸外周に間
隙介して対向させた補助軸受を保持する軸受ハウジング
とを設け、ブラケット内周面と、軸受ハウジング外周面
との係合面を円錐状に形成して、軸受ハウジングをブラ
ケットに係合固定したことを特徴とする磁気軸受装置の
補助軸受。1. A magnetic bearing device comprising a magnetic bearing rotor provided on a rotating shaft and a magnetic bearing stator supported by a stator frame through a gap in the magnetic bearing rotor, the magnetic bearing device being mounted on an end face of a stator frame. And a bearing housing that holds an auxiliary bearing opposed to the outer circumference of the rotary shaft with a gap therebetween, and the engagement surface between the inner peripheral surface of the bracket and the outer peripheral surface of the bearing housing is formed into a conical shape. Is an auxiliary bearing for a magnetic bearing device, characterized in that it is engaged and fixed to a bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8904491U JPH0532830U (en) | 1991-10-03 | 1991-10-03 | Auxiliary bearing of magnetic bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8904491U JPH0532830U (en) | 1991-10-03 | 1991-10-03 | Auxiliary bearing of magnetic bearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0532830U true JPH0532830U (en) | 1993-04-30 |
Family
ID=13959894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8904491U Pending JPH0532830U (en) | 1991-10-03 | 1991-10-03 | Auxiliary bearing of magnetic bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0532830U (en) |
-
1991
- 1991-10-03 JP JP8904491U patent/JPH0532830U/en active Pending
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