JPS5937332A - Thrust bearing device - Google Patents

Thrust bearing device

Info

Publication number
JPS5937332A
JPS5937332A JP57148721A JP14872182A JPS5937332A JP S5937332 A JPS5937332 A JP S5937332A JP 57148721 A JP57148721 A JP 57148721A JP 14872182 A JP14872182 A JP 14872182A JP S5937332 A JPS5937332 A JP S5937332A
Authority
JP
Japan
Prior art keywords
thrust
runner
thrust runner
magnetic
bearing
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
Application number
JP57148721A
Other languages
Japanese (ja)
Inventor
Masataka Mizobata
溝端　正隆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP57148721A priority Critical patent/JPS5937332A/en
Publication of JPS5937332A publication Critical patent/JPS5937332A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C39/00—Relieving load on bearings
    • F16C39/06—Relieving load on bearings using magnetic means
    • F16C39/063—Permanent magnets
    • F16C39/066—Permanent magnets with opposing permanent magnets repelling each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/0408—Passive magnetic bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/0408—Passive magnetic bearings
    • F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
    • F16C32/0427—Passive magnetic bearings with permanent magnets on both parts repelling each other for axial load mainly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C39/00—Relieving load on bearings
    • F16C39/06—Relieving load on bearings using magnetic means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

PURPOSE:To provide an economical and highly reliable thrust vearing device by furnishing a magnetic bearing on the upper part of a thrust runner to enable attract the thrust runner and a fixed panel on the lower part for providing magnetic repulsion type permanent magnets respectively on opposing faces of the thrust runner. CONSTITUTION:A magnetic thrust bearing 7 is arranged on the upper part of a thrust runner 2 for attracting the thrust runner 2 to support the thrust load of a shaft 1, while on the lower part of the thrust runner 2, a fixed panel 8 is provided with a fixed gap from the lower face of the thrust runner 2, and permanent magnets 9 and 10 are provided at the opposing spots on the opposing faces of the thrust runner 2 to support the thrust load of the shaft 1 by the magnetic repulsive forces of the permanent magnets 9 and 10. In this way, the thrust load of the rotating shaft 1 works as an arrow A shows. A part of the thrust load is supported by a dynamic pressure type oil film bearing 3 and the rest of the thrust load is supported by the magnetic attraction of a magnetic bearing 7 provided on the upper part of the thrust runner 2 and the magnetic repulsion forces of the permanent magnets 9 and 10.

Description

【発明の詳細な説明】 この発明は例えば油膜軸受と磁気軸受を使用して回転軸
のスラスト荷重を支持するスラスト軸受装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thrust bearing device that supports the thrust load of a rotating shaft using, for example, an oil film bearing and a magnetic bearing.

従来この種の装置として第１図に示すものがあった。図
において、り１）は例えば支軸型回転電機の回転軸、（
２）はこの回転軸（１）に設けられたスラストランナ、
（３）はこのスラストランナ（２）の下方に配設された
油膜軸受であシ、スラストラ／す（２）の下面との間に
形成される油膜によシそのスラストランナ（２）を介し
て回転軸（１）のスラスト荷重を支持する。A conventional device of this type is shown in FIG. In the figure, 1) is, for example, the rotating shaft of a spindle-type rotating electric machine, (
2) is a thrust runner provided on this rotating shaft (1);
(3) is an oil film bearing disposed below this thrust runner (2). supports the thrust load of the rotating shaft (1).

（４）は回転軸（１）に設けられた回転板、（５）はこ
の回転板（４）の上方に配設され、基礎（６）に支持さ
れた電磁石により構成された磁気軸受であシ、回転板（
４）を吸引することによシ回転軸（１）のスラス）荷重
全支持する。(4) is a rotating plate provided on the rotating shaft (1), and (5) is a magnetic bearing that is arranged above this rotating plate (4) and is composed of an electromagnet supported by the foundation (6). , rotary plate (
4) The entire load of the rotating shaft (1) is supported by suction.

次に動作について説明する。回転軸（１）のスラスト荷
重は矢印Ｎに示すように作用する。そのスラスト荷重の
一部は油膜軸受（３）で支持され、残シのスラスト荷重
は磁気軸受（５）の磁気吸引力によって支持されている
。Next, the operation will be explained. The thrust load on the rotating shaft (1) acts as shown by arrow N. A part of the thrust load is supported by the oil film bearing (3), and the remaining thrust load is supported by the magnetic attraction force of the magnetic bearing (5).

しかしながら上述した従来装置では、回転軸（１）のス
ラスト荷重を支持する油膜軸受（３）と磁気軸受（６）
が別々の位置に設けているため、材料面では回転板（４
）が必要であることおよび磁気軸受（５）部のために軸
長がそれだけ長くなること、工作、組立面では回転円板
（４）があるためにそれだけ加工が増え、組立方法が複
雑になること、振動面では軸長が長くなシ、回転板（４
）の質量が付加されるために危険速度が低下するなどの
欠点があった。また、磁気軸受（５）が電磁石によυ構
成されているので、回転円板（４）を吸引して回転軸（
１）のスラスト荷重を支持するのに大きな電力、電源装
置を必要とするなどの欠点もあった＠ この発明は上記のような従来のものの欠点に鑑みてなさ
れたものであシ、磁気軸受をスラストランナのＬ方にそ
のスラストランナを吸引し得るよう配設すると共に、ス
ラストランナの下方にそのスラストランナの下面と所定
の間隙なもって固定板を配設し、固定板とスラストラン
ナの相対する面にそれぞれ対向位置に磁気反発型永久磁
石を配設することによシ、経済性に優れ高信頼性のスラ
スト軸受装置を提供することを目的としている。However, in the conventional device described above, an oil film bearing (3) and a magnetic bearing (6) that support the thrust load of the rotating shaft (1) are used.
are provided in different positions, so in terms of material, the rotary plate (4
) is required, the shaft length becomes longer due to the magnetic bearing (5), and in terms of machining and assembly, the presence of the rotating disk (4) increases the amount of machining and complicates the assembly method. On the vibration side, the axial length is long, and the rotating plate (4
) had the disadvantage that the critical speed decreased due to the added mass. In addition, since the magnetic bearing (5) is configured with an electromagnet, it attracts the rotating disk (4) and rotates the rotating shaft (
1) It also had disadvantages such as requiring a large amount of electric power and a power supply device to support the thrust load. This invention was made in view of the above-mentioned disadvantages of the conventional device. The thrust runner is arranged on the L side of the thrust runner so as to be able to attract the thrust runner, and a fixed plate is arranged below the thrust runner with a predetermined gap from the lower surface of the thrust runner, so that the fixed plate and the thrust runner face each other. The object of the present invention is to provide a thrust bearing device that is highly economical and highly reliable by arranging magnetic repulsion type permanent magnets at opposite positions on each surface.

以下、この発明の一実施例を第２図に基づいて説明する
０図において、（１）は回転軸、（２）はスラストラン
ナ、（３）は動圧型油膜軸受、（６）は基礎、（７）は
スラストランナ（２）の上方に配設され、基礎（６）に
支持された電磁石により構成された磁気軸受であシ、ス
ラストランナ（２）を吸引することにより、回転軸（１
）のスラスト荷重を支持する。（８）はスラストランナ
（２）の下方にそのスラストランナ（２）の下面と所定
の間隙をもって配設され、基礎（６）に支持された固定
板、（９）、αＯは固定板（８）とスラストランナ（２
）の相対する面にそれぞれ対向位置に配設された例えば
希土類コバルト永久磁石などの強力な磁気反発型永久磁
石であシ、この永久磁石（９）　、　（１１３間に生じ
る強力な磁気反発力によって回転軸（１）のスラスト荷
重を支持する。Hereinafter, one embodiment of the present invention will be explained based on FIG. 2. In Fig. 0, (1) is a rotating shaft, (2) is a thrust runner, (3) is a hydrodynamic oil film bearing, (6) is a foundation, (7) is arranged above the thrust runner (2) and is a magnetic bearing composed of an electromagnet supported by the foundation (6).By attracting the thrust runner (2), the rotating shaft (1
) to support thrust loads. (8) is a fixed plate disposed below the thrust runner (2) with a predetermined gap from the bottom surface of the thrust runner (2) and supported by the foundation (6); (9) and αO are fixed plates (8); ) and thrust runner (2
) are placed in opposing positions on the opposing surfaces of the permanent magnets (9) and (113). Supports the thrust load of the rotating shaft (1).

次に動作について説明する。回転軸（１）のスラスト荷
重は矢印Ａに示すように作用する。そのスラスト荷重の
一部は動圧型油膜軸受（３）で支持され、残シのスラス
ト荷重はスラストランナ（２）の上方に配設した磁気軸
受（７）の磁気吸引力と永久磁石（９）。Next, the operation will be explained. The thrust load on the rotating shaft (1) acts as shown by arrow A. A part of the thrust load is supported by the hydrodynamic oil film bearing (3), and the remaining thrust load is supported by the magnetic attraction of the magnetic bearing (7) installed above the thrust runner (2) and the permanent magnet (9). .

顛の磁気反発力によって支持されている。このように磁
気軸受（７）をスラストランナ（２）の上方に配設し、
そのスラストランナ（２）を吸引して回転軸（１）のス
ラスト荷重を支持すると共に、スラストランナ（２）の
下方にそのスラストランナ（２）の下面と所定の間隙を
もって固定板（８）を配設し、固定板（８）とスラスト
ランナ（２）の相対する面にそれぞれ対向位置に永久磁
石（９）　、　ＯＯを配設し、その永久磁石（９）　、
　Ｏ（）の磁気反発力によって回転軸（１）のスラスト
荷重を支持スるようにしているので、上述した従来装備
に比べ、回転板（４）を省略することができると共に軸
長な短くでき、また、工作、組立方法が簡□単となる。It is supported by the magnetic repulsion of the fabric. In this way, the magnetic bearing (7) is arranged above the thrust runner (2),
The thrust runner (2) is sucked to support the thrust load of the rotating shaft (1), and a fixed plate (8) is installed below the thrust runner (2) with a predetermined gap between it and the lower surface of the thrust runner (2). Permanent magnets (9) and OO are arranged at opposing positions on opposing surfaces of the fixed plate (8) and the thrust runner (2), respectively, and the permanent magnets (9) and OO are arranged at opposing positions, respectively.
Since the thrust load of the rotating shaft (1) is supported by the magnetic repulsion of O(), the rotating plate (4) can be omitted and the shaft length can be shortened compared to the conventional equipment mentioned above. Also, the work and assembly methods are simple.

さらに、振動面においては軸長が短くなるので、危険速
度を高めることができる。さらに、永久磁石（９）　、
　０１の分だけ磁気軸受（７）の電磁石に必要な所要電
力を低減することができ、その電源装置も小さくできる
。Furthermore, since the axial length is shortened on the vibration surface, the critical speed can be increased. Furthermore, a permanent magnet (9),
The power required for the electromagnet of the magnetic bearing (7) can be reduced by 01, and the power supply device thereof can also be made smaller.

この発明は以上説明した通シ、磁気軸受をスラストラン
ナの上方にそのスラストランナを吸引し得るよう配設す
ると共に、スラストランナの下方にそのスラストランナ
の下面と所定の間隙をもって固定板を配設し、固定板と
スラストランナの相対する面にそれぞれ対向位置に磁気
反発型永久磁石を配設することによシ、経済性□に優れ
高信頼性のスラスト軸受装置を得ることができる。In this invention, the above-described magnetic bearing is arranged above the thrust runner so as to be able to attract the thrust runner, and a fixing plate is arranged below the thrust runner with a predetermined gap from the lower surface of the thrust runner. However, by arranging magnetic repulsion type permanent magnets at opposing positions on the opposing surfaces of the fixed plate and the thrust runner, an economical and highly reliable thrust bearing device can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来のスラスト軸受装置を示す縦断面図□、第
２図はこの発明の一実施例によるスラスト軸受装置を示
す縦断面図である。 図において、（１）は回転軸、（２）はスラストランナ
、（７）は磁気軸受、（８）は固定板、（９）、αＯは
永久磁石である。　　　□ 尚、面中同−符号は同−又は相当部分を示す。 代理人　葛野信− 第１図 １・ 第２図 １′FIG. 1 is a vertical cross-sectional view □ showing a conventional thrust bearing device, and FIG. 2 is a vertical cross-sectional view showing a thrust bearing device according to an embodiment of the present invention. In the figure, (1) is a rotating shaft, (2) is a thrust runner, (7) is a magnetic bearing, (8) is a fixed plate, (9) and αO are permanent magnets. □ In addition, the same symbol in the page indicates the same or equivalent part. Agent Makoto Kuzuno - Figure 1 1, Figure 2 1'

Claims (2)

【特許請求の範囲】[Claims] （１）回転軸に設けられたスラストランナ、このスラス
トランナの上方に配設され、上記スラストランナを吸引
することによυ上記回転軸のスラスト荷重を支持する磁
気軸受と、上記スラストランナの下方に上記スラストラ
ンナの下面と所定の間隙をもって配設された固定板と、
この固定板と上記スラストランナの相対する面にそれぞ
れ対向位置に配設された磁気反発型永久磁石とを備えた
ことを特徴とするスラスト軸受装置。(1) A thrust runner provided on the rotating shaft, a magnetic bearing disposed above the thrust runner and supporting the thrust load of the rotating shaft by attracting the thrust runner, and a magnetic bearing below the thrust runner. a fixed plate disposed with a predetermined gap from the lower surface of the thrust runner;
A thrust bearing device comprising magnetic repulsion type permanent magnets disposed at opposing positions on opposing surfaces of the fixed plate and the thrust runner, respectively. （２）永久磁石は希土類コバルト永久磁石であることを
特徴とする特許請求の範囲第１項記載のスラスト軸受装
置。(2) The thrust bearing device according to claim 1, wherein the permanent magnet is a rare earth cobalt permanent magnet.
JP57148721A 1982-08-25 1982-08-25 Thrust bearing device Pending JPS5937332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57148721A JPS5937332A (en) 1982-08-25 1982-08-25 Thrust bearing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57148721A JPS5937332A (en) 1982-08-25 1982-08-25 Thrust bearing device

Publications (1)

Publication Number Publication Date
JPS5937332A true JPS5937332A (en) 1984-02-29

Family

ID=15459112

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57148721A Pending JPS5937332A (en) 1982-08-25 1982-08-25 Thrust bearing device

Country Status (1)

Country Link
JP (1) JPS5937332A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006022554A1 (en) * 2004-08-25 2006-03-02 Norpropeller As Bearing with permanent magnetic elements

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006022554A1 (en) * 2004-08-25 2006-03-02 Norpropeller As Bearing with permanent magnetic elements
NO322779B1 (en) * 2004-08-25 2006-12-11 Norpropeller As Stock with permanent magnetic elements

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