CN111064311A - Magnetic suspension bearing power transmission system - Google Patents

Magnetic suspension bearing power transmission system Download PDF

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Publication number
CN111064311A
CN111064311A CN201911323234.9A CN201911323234A CN111064311A CN 111064311 A CN111064311 A CN 111064311A CN 201911323234 A CN201911323234 A CN 201911323234A CN 111064311 A CN111064311 A CN 111064311A
Authority
CN
China
Prior art keywords
coupling
universal coupling
universal
magnetic
rod
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
CN201911323234.9A
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Chinese (zh)
Inventor
陈金平
张利
罗艳彦
张海宁
刘君
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.)
Qingan Group Co Ltd
Original Assignee
Qingan Group Co Ltd
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 Qingan Group Co Ltd filed Critical Qingan Group Co Ltd
Priority to CN201911323234.9A priority Critical patent/CN111064311A/en
Publication of CN111064311A publication Critical patent/CN111064311A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08Structural association with bearings
    • H02K7/09Structural association with bearings with magnetic bearings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K49/00Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/10Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
    • H02K49/102Magnetic gearings, i.e. assembly of gears, linear or rotary, by which motion is magnetically transferred without physical contact
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K49/00Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/10Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
    • H02K49/104Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
    • H02K49/106Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with a radial air gap
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003Couplings; Details of shafts

Abstract

The invention provides a magnetic suspension power transmission system, comprising: the magnetic suspension bearing system, the first coupling assembly, the second coupling assembly and the load; the second coupling assembly includes: the universal coupling comprises a first universal coupling, a cross universal coupling sleeve rod and a second universal coupling; the magnetic suspension bearing system is connected with the first gimbal coupler through the first coupler assembly and drives the first gimbal coupler to rotate; the first universal coupling is connected with the second universal coupling through a cross universal coupling sleeve rod and drives the second universal coupling to rotate, and the length of the cross universal coupling sleeve rod is adjustable; the second universal coupling is connected with the load and drives the load to rotate. The magnetic suspension bearing power transmission system provided by the embodiment of the invention is suitable for high-speed long-distance power transmission, and has the advantages of simple structure and convenience in installation and combination.

Description

Magnetic suspension bearing power transmission system
Technical Field
The invention relates to the field of high-speed power transmission, in particular to a power transmission system of a magnetic suspension bearing.
Background
The magnetic suspension bearing system technology has the outstanding advantages of no friction, high efficiency, high speed, high precision, long service life, low noise, no oil stain and the like, and has wide application fields including aircraft engines, helicopter tail rotor transmission systems, centrifugal compressors, blowers, wind driven generators, water treatment, electric spindles, energy storage flywheels and the like.
The existing magnetic suspension bearing technology mainly comprises a radial magnetic bearing, an axial magnetic bearing, a motor, a rotating shaft, a controller, an amplifier, a power supply, an auxiliary bearing, a sensor, a load, a cooling system and the like. The main technologies include a magnetic suspension technology, a rotor vibration mode control technology, a rotor unbalance response control technology, a rotor transient response control technology, an amplifier technology, a system integration technology, a multi-sensor feedback control technology and a cooling technology.
In the existing magnetic suspension bearing technology, a magnetic suspension bearing and a motor are integrally designed, and meanwhile, a rotating shaft is directly connected with a load so as to facilitate axial control of the magnetic suspension bearing, so that power transmission cannot be carried out remotely, and a power shaft and the load shaft must be concentric. This limits the application range of the magnetic bearing technology and cannot exert its unique advantages.
Disclosure of Invention
The embodiment of the invention provides a magnetic suspension bearing power transmission system which is suitable for high-speed long-distance power transmission, simple in structure and convenient to install and combine.
The embodiment of the invention provides a magnetic suspension bearing power transmission system, which comprises: magnetic bearing system 100, first coupling assembly 200, second coupling assembly 300, and load 400; the second coupling assembly 300 includes: a first universal coupling 301, a cross universal coupling loop bar 302 and a second universal coupling 303; wherein the content of the first and second substances,
the magnetic suspension bearing system 100 is connected with the first gimbal coupler 301 through the first coupler assembly 200 and drives the first gimbal coupler 301 to rotate;
the first universal coupling 301 is connected with the second universal coupling 303 through a cross universal coupling sleeve rod 302 and drives the second universal coupling 303 to rotate, and the length of the cross universal coupling sleeve rod 302 is adjustable;
the second universal coupling 303 is connected to the load 400 and drives the load 400 to rotate.
Optionally, the magnetic bearing system 100 includes: the device comprises an axial magnetic bearing component 1, a left radial magnetic bearing 2, a motor 3, a right radial magnetic bearing 4 and a rotating shaft 13;
the axial magnetic bearing component 1, the left radial magnetic bearing 2, the motor 3 and the right radial magnetic bearing 4 are sequentially sleeved on the rotating shaft 13, and the motor 3 drives the rotating shaft 13 to rotate;
one end of the rotating shaft 13 close to the right radial magnetic bearing 4 is connected with a first universal coupling 301 through a first coupling assembly 200.
Optionally, the first coupling assembly 200 is a magnetic non-contact coupling 5, comprising: the magnetic coupling outer ring 14, the magnetic coupling outer ring permanent magnet 15, the magnetic coupling inner ring 16 and the magnetic coupling inner ring permanent magnet 17 are sleeved in sequence from outside to inside; wherein the content of the first and second substances,
the magnetic coupling outer ring 14 is connected to one end of the rotating shaft 13 close to the right radial magnetic bearing 4, and the magnetic coupling inner ring 16 is connected to the first universal coupling 301.
Optionally, a protrusion is disposed on a side of the inner ring 16 of the magnetic coupling close to the first universal coupling 301, the protrusion protrudes out of the outer ring 14 of the magnetic coupling, and the outer ring of the protrusion is sleeved with the support bearing 6.
Optionally, the first universal coupling 301 includes: a first cross universal coupling rod 7 and a first cross universal coupling 8;
one end of the first cross universal coupling rod 7 is sleeved in the magnetic coupling inner ring 16, and the other end of the first cross universal coupling rod 7 is connected with the first cross universal coupling 8;
the second universal coupling 303 includes: a second cross universal coupling rod 9 and a second cross universal coupling 10;
one end of the second cross universal coupling rod 9 is sleeved in the load 400, and the other end of the second cross universal coupling rod 9 is connected with the second cross universal coupling 10;
the first cross universal coupling 8 and the second cross universal coupling 10 are respectively arranged at two ends of the cross universal coupling loop bar 302.
Optionally, the second coupling assembly 300 includes: a plurality of sets of cross universal coupling rods 302 and a second universal coupling 303.
Optionally, sensors are arranged in the left radial magnetic bearing 2 and the right radial magnetic bearing 4;
the sensor is used to detect the position of the rotating shaft 13.
Optionally, a protection bearing is arranged in the left radial magnetic bearing 2 and the right radial magnetic bearing 4.
Optionally, the universal joint cross stem 302 includes: a cross universal coupling inner cylinder rod 11 and a cross universal coupling outer cylinder rod 12; wherein the content of the first and second substances,
the cross universal coupling inner cylinder rod 11 and the cross universal coupling outer cylinder rod 12 are connected through a movable spline, and the cross universal coupling inner cylinder rod 11 and the cross universal coupling outer cylinder rod 12 can move relatively in the axial direction.
The magnetic suspension bearing power transmission system provided by the embodiment of the invention has the following beneficial effects:
1. the power transmission device is suitable for high-speed long-distance power transmission, simple in structure and convenient to install and combine.
2. The non-contact magnetic coupling is suitable for high speed, is convenient for the axial position control of the magnetic suspension bearing, and does not put forward additional requirements on the existing magnetic suspension bearing power system.
3. The characteristic that the middle connecting rods of the two universal cross couplings are connected through splines and can move in a certain range along the axial direction enables the power shaft and the load shaft not to be concentric, and even if the load end moves in space in the actual operation process, the normal transmission of power cannot be influenced.
4. Can be used in series combination to accommodate longer distance transmission.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a magnetic suspension bearing power transmission system according to an embodiment of the present invention;
FIG. 2 is a front view of a magnetic non-contact coupling provided in accordance with an embodiment of the present invention;
FIG. 3 is a side view of a magnetic non-contact coupling provided in accordance with an embodiment of the present invention;
FIG. 4 is a front view of a cross-universal coupling stem provided in accordance with an embodiment of the present invention;
FIG. 5 is a side view of an Oldham coupling stem provided by an embodiment of the present invention;
description of reference numerals:
100-a magnetic bearing system; 200-a first coupling assembly;
300 — a second coupling assembly; 301 — first universal coupling;
302-cross universal coupling sleeve rod; 303 — a second universal coupling;
400-load; 1-an axial magnetic bearing assembly;
2-left radial magnetic bearing; 3, a motor;
4-right radial magnetic bearing; 5-a non-contact coupling;
6-support bearing; 7-a first cross universal coupling rod;
8-a first cross universal coupling; 9-second cross universal coupling rod;
10-the second cross universal coupling; 11-cross universal coupling inner cylinder rod;
12-a cross universal coupling outer cylinder rod; 13-a rotating shaft;
14-magnetic coupling outer ring; 15-outer ring permanent magnet of magnetic coupling;
16-inner ring of magnetic coupling; 17-inner ring permanent magnet of magnetic coupling.
Detailed Description
Fig. 1 is a schematic structural diagram of a magnetic suspension bearing power transmission system according to an embodiment of the present invention, and as shown in fig. 1, the magnetic suspension bearing power transmission system according to the present invention includes: magnetic bearing system 100, coupling assembly 200, universal coupling 300, and load 400; the second coupling assembly 300 includes: a first universal coupling 301, a cross universal coupling loop bar 302 and a second universal coupling 303; wherein the content of the first and second substances,
the magnetic suspension bearing system 100 is connected with the first gimbal coupler 301 through the first coupler assembly 200 and drives the first gimbal coupler 301 to rotate;
the first universal coupling 301 is connected with the second universal coupling 303 through a cross universal coupling sleeve rod 302 and drives the second universal coupling 303 to rotate, and the length of the cross universal coupling sleeve rod 302 is adjustable;
the second universal coupling 303 is connected to the load 400 and drives the load 400 to rotate.
Optionally, the magnetic bearing system 100 includes: the device comprises an axial magnetic bearing component 1, a left radial magnetic bearing 2, a motor 3, a right radial magnetic bearing 4 and a rotating shaft 13;
the axial magnetic bearing component 1, the left radial magnetic bearing 2, the motor 3 and the right radial magnetic bearing 4 are sequentially sleeved on the rotating shaft 13, and the motor 3 drives the rotating shaft 13 to rotate;
one end of the rotating shaft 13 close to the right radial magnetic bearing 4 is connected with a first universal coupling 301 through a first coupling assembly 200.
Illustratively, an axial magnetic bearing assembly 1, a left radial magnetic bearing 2, and a right radial magnetic bearing 4 are used to support the rotating shaft 13. The left radial magnetic bearing 2 and the right radial magnetic bearing 4 are used for radial support, and the axial magnetic bearing assembly 1 is used for axial fixation of the bearing 13.
Fig. 2 is a front view of a magnetic non-contact coupling according to an embodiment of the present invention, fig. 3 is a side view of the magnetic non-contact coupling according to an embodiment of the present invention, as shown in fig. 2 and 3, and optionally, the first coupling assembly 200 is a magnetic non-contact coupling 5, including: the magnetic coupling outer ring 14, the magnetic coupling outer ring permanent magnet 15, the magnetic coupling inner ring 16 and the magnetic coupling inner ring permanent magnet 17 are sleeved in sequence from outside to inside; wherein the content of the first and second substances,
the magnetic coupling outer ring 14 is connected to one end of the rotating shaft 13 close to the right radial magnetic bearing 4, and the magnetic coupling inner ring 16 is connected to the first universal coupling 301.
Optionally, the number of the permanent magnets 15 on the outer ring of the magnetic coupling and the permanent magnets 17 on the inner ring of the magnetic coupling may be 12.
Illustratively, the outer ring permanent magnet 15 of the magnetic coupling and the inner ring permanent magnet 17 of the magnetic coupling are in non-contact and generate magnetic force with each other, and when the rotating shaft 13 drives the outer ring permanent magnet 15 of the magnetic coupling to rotate, the inner ring permanent magnet 17 of the magnetic coupling is driven to rotate, and then the second coupling assembly 300 and the load 400 are driven to rotate.
Illustratively, the magnetic coupling outer race 14 is an interference fit with the shaft 13.
Optionally, a protrusion is disposed on a side of the inner ring 16 of the magnetic coupling close to the first universal coupling 301, the protrusion protrudes out of the outer ring 14 of the magnetic coupling, and the outer ring of the protrusion is sleeved with the support bearing 6.
Optionally, the first universal coupling 301 includes: a first cross universal coupling rod 7 and a first cross universal coupling 8;
one end of the first cross universal coupling rod 7 is sleeved in the magnetic coupling inner ring 16, and the other end of the first cross universal coupling rod 7 is connected with the first cross universal coupling 8;
the second universal coupling 303 includes: a second cross universal coupling rod 9 and a second cross universal coupling 10;
one end of the second cross universal coupling rod 9 is sleeved in the load 400, and the other end of the second cross universal coupling rod 9 is connected with the second cross universal coupling 10;
the first cross universal coupling 8 and the second cross universal coupling 10 are respectively arranged at two ends of the cross universal coupling loop bar 302.
Alternatively, a plurality of cross universal coupling rods 302 and second universal couplings 303 may be provided to accommodate longer distance transmissions.
Optionally, sensors are disposed in the left radial magnetic bearing 2 and the right radial magnetic bearing 4, and the sensors are used for ensuring the electromagnetic balance position of the rotating shaft 13.
Optionally, a protection bearing is arranged in the left radial magnetic bearing 2 and the right radial magnetic bearing 4.
In case of a power failure or an accident, such as a power failure or saturation, the bearing 13 falls on the protection bearing.
Fig. 4 is a front view of an universal joint cross rod according to an embodiment of the present invention, and fig. 5 is a side view of an universal joint cross rod according to an embodiment of the present invention, as shown in fig. 4 and 5, optionally, the universal joint cross rod 302 includes: a cross universal coupling inner cylinder rod 11 and a cross universal coupling outer cylinder rod 12; wherein the content of the first and second substances,
the cross universal coupling inner cylinder rod 11 and the cross universal coupling outer cylinder rod 12 are connected through a movable spline, and the cross universal coupling inner cylinder rod 11 and the cross universal coupling outer cylinder rod 12 can move relatively in the axial direction.
The magnetic suspension bearing power transmission system provided by the embodiment of the invention has the following beneficial effects:
1. the power transmission device is suitable for high-speed long-distance power transmission, simple in structure and convenient to install and combine.
2. The non-contact magnetic coupling is suitable for high speed, is convenient for the axial position control of the magnetic suspension bearing, and does not put forward additional requirements on the existing magnetic suspension bearing power system.
3. The characteristic that the middle connecting rods of the two universal cross couplings are connected through splines and can move in a certain range along the axial direction enables the power shaft and the load shaft not to be concentric, and even if the load end moves in space in the actual operation process, the normal transmission of power cannot be influenced.
4. Can be used in series combination to accommodate longer distance transmission. The invention is suitable for helicopter tail rotors and other occasions.

Claims (9)

1. A magnetic bearing power transmission system, comprising: a magnetic bearing system (100), a first coupling assembly (200), a second coupling assembly (300), and a load (400); the second coupling assembly (300) comprises: the universal coupling comprises a first universal coupling (301), a cross universal coupling sleeve rod (302) and a second universal coupling (303); wherein the content of the first and second substances,
the magnetic suspension bearing system (100) is connected with the first universal coupler (301) through the first coupler assembly (200) and drives the first universal coupler (301) to rotate;
the first universal coupling (301) is connected with the second universal coupling (303) through the cross universal coupling sleeve rod (302) and drives the second universal coupling (303) to rotate, and the length of the cross universal coupling sleeve rod (302) is adjustable;
the second universal coupling (303) is connected with the load (400) and drives the load (400) to rotate.
2. The system of claim 1, wherein the magnetic bearing system (100) comprises: the device comprises an axial magnetic bearing component (1), a left radial magnetic bearing (2), a motor (3), a right radial magnetic bearing (4) and a rotating shaft (13);
the axial magnetic bearing component (1), the left radial magnetic bearing (2), the motor (3) and the right radial magnetic bearing (4) are sequentially sleeved on the rotating shaft (13), and the motor (3) drives the rotating shaft (13) to rotate;
one end of the rotating shaft (13) close to the right radial magnetic bearing (4) is connected with the first universal coupler (301) through the first coupler assembly (200).
3. The system of claim 2, wherein the first coupling assembly (200) is a magnetic non-contact coupling (5) comprising: the magnetic coupling outer ring (14), the magnetic coupling outer ring permanent magnet (15), the magnetic coupling inner ring (16) and the magnetic coupling inner ring permanent magnet (17) are sleeved in sequence from outside to inside; wherein the content of the first and second substances,
the outer ring (14) of the magnetic coupling is connected with one end, close to the right radial magnetic bearing (4), of the rotating shaft (13), and the inner ring (16) of the magnetic coupling is connected with the first universal coupling (301).
4. A system according to claim 3, characterized in that the side of the inner magnetic coupling ring (16) close to the first universal coupling (301) is provided with a protrusion protruding the outer magnetic coupling ring (14), the outer ring of which is sleeved with a support bearing (6).
5. The system of claim 4, wherein the first universal coupling (301) comprises: a first cross universal coupling rod (7) and a first cross universal coupling (8);
one end of the first cross universal coupling rod (7) is sleeved in the magnetic coupling inner ring (16), and the other end of the first cross universal coupling rod (7) is connected with the first cross universal coupling (8);
the second universal coupling (303) comprises: a second cross universal coupling rod (9) and a second cross universal coupling (10);
one end of the second cross-shaped universal coupling rod (9) is sleeved in the load (400), and the other end of the second cross-shaped universal coupling rod (9) is connected with the second cross-shaped universal coupling (10);
the first cross universal coupling (8) and the second cross universal coupling (10) are respectively arranged at two ends of the cross universal coupling sleeve rod (302).
6. The system of claim 1, wherein the second coupling assembly (300) comprises: a plurality of groups of cross universal coupling sleeve rods (302) and a second universal coupling (303).
7. The system according to claim 1, characterized in that sensors are provided in the left radial magnetic bearing (2) and the right radial magnetic bearing (4);
the sensor is used for detecting the position of the rotating shaft (13).
8. The system according to claim 1, characterized in that protective bearings are provided in the left radial magnetic bearing (2) and the right radial magnetic bearing (4).
9. The system of claim 1, wherein the cross-universal coupling stem (302) comprises: an inner cylinder rod (11) of the cross universal coupling and an outer cylinder rod (12) of the cross universal coupling; wherein the content of the first and second substances,
the inner cylinder rod (11) of the cross universal coupling and the outer cylinder rod (12) of the cross universal coupling are connected through a movable spline, and the inner cylinder rod (11) of the cross universal coupling and the outer cylinder rod (12) of the cross universal coupling can move relatively along the axial direction.
CN201911323234.9A 2019-12-19 2019-12-19 Magnetic suspension bearing power transmission system Pending CN111064311A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911323234.9A CN111064311A (en) 2019-12-19 2019-12-19 Magnetic suspension bearing power transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911323234.9A CN111064311A (en) 2019-12-19 2019-12-19 Magnetic suspension bearing power transmission system

Publications (1)

Publication Number Publication Date
CN111064311A true CN111064311A (en) 2020-04-24

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CN201911323234.9A Pending CN111064311A (en) 2019-12-19 2019-12-19 Magnetic suspension bearing power transmission system

Country Status (1)

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CN (1) CN111064311A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101068089A (en) * 2007-06-06 2007-11-07 上海汽轮发电机有限公司 Rotary roasting tray
CN101413440A (en) * 2008-11-26 2009-04-22 沈阳黎明航空发动机(集团)有限责任公司 Minitype gas turbine electric generating set
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CN102437798A (en) * 2011-10-19 2012-05-02 上海大学 High speed electric spindle supported by all-permanent magnet bearing
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CN103346659A (en) * 2013-06-17 2013-10-09 宝鸡泰华磁机电技术研究所有限公司 Internal radiation ring type static speed-adjusting permanent magnetic coupling
CN105480253A (en) * 2016-01-13 2016-04-13 上海洲跃生物科技有限公司 Brake device of vacuum pipeline wheel rail train
CN107994717A (en) * 2017-12-18 2018-05-04 西安航天动力测控技术研究所 A kind of integrated under-water DC brushless electric machine of magnetic shaft coupling
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CN101521432A (en) * 2008-02-25 2009-09-02 卓向东 Permanent magnetic quake-proof suspension bearing motor
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CN108696097A (en) * 2018-07-17 2018-10-23 江苏磁谷科技股份有限公司 It is a kind of to medium-sized permanent magnet clutch

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Title
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