CN105150795A - Magnetic-suspension balance shaft system - Google Patents
Magnetic-suspension balance shaft system Download PDFInfo
- Publication number
- CN105150795A CN105150795A CN201510652250.8A CN201510652250A CN105150795A CN 105150795 A CN105150795 A CN 105150795A CN 201510652250 A CN201510652250 A CN 201510652250A CN 105150795 A CN105150795 A CN 105150795A
- Authority
- CN
- China
- Prior art keywords
- balance shaft
- magnetic field
- sleeve
- field generating
- described balance
- 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.)
- Granted
Links
Landscapes
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a magnetic-suspension balance shaft system. The magnetic-suspension balance shaft system is characterized in that a balance shaft shell and a balance shaft mandrel are integrated, so that a novel balance shaft shell is formed; the novel balance shaft shell, a balance shaft bracket and a balance shaft sleeve can form two position relationships; the magnetic-suspension balance shaft system is provided with a control system, and the control system is connected with parts respectively at both ends of a balance shaft sleeve shell. According to the the invention, connection manners and transmission manners among parts can be changed, so that the balance shaft system has high adaptability, and the stressed situation is improved; therefore, the structural reliability is improved, and the service life is prolonged.
Description
Technical field
The invention belongs to balancing suspension system, be specifically related to a kind of balance shaft of heavy truck system.
Background technology
In multi-axle heavy type automobile, in order to ensure in operational process, all tire is kiss the earth simultaneously, all have employed balance shaft system, in working process, its power transmittance process is: balance shaft housing → angular contact ball spherical bearing or axle sleeve → balance shaft mandrel → balance shaft support, because service conditions is severe, radial weight is large, require that this system has higher reliability, each parts have larger intensity, simultaneously because load change in working process is fast, and amplitude is large, and claimed structure has higher strength at repeated alternation.
Magnetic levitation technology comparative maturity now, has application in a lot of industry, but balancing suspension system in need research.
Existing balance shaft system has various structures, but their common features are all the structures adopting fully mechanical, by dependency structure, balance shaft housing can be rotated around mandrel, there is relative sliding friction face in structure, surface is easy to wear, and stressed intensity macrostructure is complicated, easily there is end float misalignment in related components, easily make the bolt for retainer of balance shaft end loosen, even rupture, easily cause the faults such as structure breaking.Simultaneously because area of contact is large, to the material of opposite sliding surfaces and surface roughness requirements high, processing and manufacturing difficulty is large, and lubricity and sealing structure performance requriements higher.For existing various different balance shaft system, according to the difference of application scenario, there is its stressed unreasonable part.
The size of existing balance shaft system intermediate gap is given by the experience of designer, and gap is too little sometimes, and structure is easily stuck, and in the course of the work due to wearing and tearing, gap in continuous change, for the vibration of automobile introduces uncontrollable factor.
Summary of the invention
The present invention is directed to the deficiency that prior art exists, propose a kind of magnetic levitation balanced axle system, to connection between each parts and type of drive can be changed, make balance shaft system have higher comformability, improve its stressing conditions, thus increase reliability of structure and service life.
The present invention is that technical solution problem adopts following technical scheme:
A kind of magnetic levitation balanced axle system of the present invention, is comprised left side structure and right side structure, and is connected by intermediate connecting shaft; Described left side structure and right side structure are symmetrical structure; Wherein arbitrary side portion structure comprises: balance shaft housing, balance shaft mandrel and balance shaft support; The side of described balance shaft mandrel is set with described balance shaft housing; Opposite side is set with described balance shaft support; Its constructional feature is:
Balance shaft housing is set and described balance shaft mandrel is integral type structure, thus forms new-type balance shaft housing; Balance sleeve is set with at the cylindrical end of described new-type balance shaft housing; And described balance shaft support is set with on described balance sleeve; Thus make described new-type balance shaft housing, can forming position relation one or position relationship two between described balance shaft support and described balance sleeve;
Described position relationship one is:
Diameter clearance and endplay is there is between described new-type balance shaft housing and described balance sleeve; And described balance shaft support be relative fixing between described balance sleeve; Described diameter clearance makes diametrically float between described new-type balance shaft housing and described balance sleeve; Described endplay makes between described new-type balance shaft housing with described balance shaft axle sleeve axially without relatively contacting;
Described position relationship two is:
Diameter clearance and endplay is there is between described balance shaft support and described balance shaft axle sleeve; And described new-type balance shaft housing be relative fixing between described balance shaft support; Described diameter clearance makes radial energy Relative Floating between described balance shaft support and described balance shaft axle sleeve; Described endplay makes between described balance shaft support with described balance shaft axle sleeve axially without relatively contacting;
Described balance sleeve comprises: parts and balance sleeve shell;
The both sides end face of described balance shaft sheath body is evenly distributed with described parts respectively; Described parts comprise: axial magnetic field generating means, radial magnetic field generating means, axial distance sensor and radial distance sensor;
One control system is set;
Described control system is connected with the parts at described balance shaft sheath body two ends respectively, for obtaining the endplay signal of described axial distance sensor, and the diameter clearance signal of described radial distance sensor; And the magnetic field controlling described axial magnetic field generating means is strong and weak, and the magnetic field of described radial magnetic field generating means is strong and weak.
The constructional feature of magnetic levitation balanced axle system of the present invention is also:
Described axial magnetic field generating means is made up of the first iron core and the first coil, and described first coil is wound on described first iron core, thus produces axial magnetic field.
Described radial magnetic field generating means is made up of the second iron core and the second coil, described second coil winding on described second iron core, for generation of radial magnetic field; The inner end surface of described second iron core is cylindrical surface structure, and the circular arc of inner end surface is concentric with the cylindrical end of described balance shaft housing.
In described position relationship one, described radial magnetic field generating means is evenly distributed on the end face of below described balance shaft housing axis; In described position relationship two, described radial magnetic field generating means is evenly distributed on the end face of more than described balance shaft housing axis;
The end face of described balance shaft sheath body is provided with two radial magnetic field generating meanss; And described two radial magnetic field generating meanss are symmetrical relative to the vertical plane at the axis place of described balance shaft sheath body; The angle of the vertical plane at any one radial magnetic field generating means and described axis place is α, regulates magnetic field strong and weak with described angle α.
Between described balance shaft support and described balance shaft housing, be provided with sealing arrangement, form the two ends hermetically-sealed construction of described balance shaft axle sleeve with described sealing arrangement.
Described control system carrys out controlling magnetic field power by controlling electric current power, thus realizes the suspension in all directions of described balance shaft housing.
Compared with prior art, Advantageous Effects of the present invention is embodied in:
1, magnetic levitation technology is applied in balance shaft system by the present invention, has expanded the application of magnetic levitation technology, has enriched the structure of balance shaft system, makes the selection of engineering staff more diversified.
2, transmit radial and axial power by magnetic force in the present invention, and do not rely on the contact between piece surface, exert all one's strength and can be distributed in piece surface uniformly, thus make structure stress more reasonable, reduce stress and concentrate, the reliability of system can be improved.
3, relatively rotate in the present invention without contact between surface, the friction in the middle of part, wearing and tearing need not be considered, not high to the processing request of piece surface, and improve service life, there will not be the situation making structure stuck because gap is too small simultaneously.
4, in the present invention because the application of magnetic levitation technology makes the structure of balance shaft system greatly be simplified, many structures can, as the structure of integral type, make structure compacter, simultaneously are also convenient to carry out analysis optimization and light-weight design to structure.
5, the present invention need not consider lubrication, and sealing property requires also not high.
6, the present invention can realize to balance shaft system by magnetic suspension system ACTIVE CONTROL, can realize the control to car load mode of vibration by related control strategies, thus provides new research technique for automobile ride research and vehicle body damping.
Accompanying drawing explanation
Fig. 1 is integral structure figure of the present invention;
Fig. 2 is the constructional drawing of axle sleeve of the present invention and associated components;
Fig. 3 is an end view drawing of axle sleeve of the present invention and associated components;
Fig. 4 is the constructional drawing of radial magnetic field generating means of the present invention;
Sequence number in figure: 1 Novel balance axle housing; 2 balance shaft supports; 3 balance sleeves; 4 axial magnetic field generating meanss; 5 seal rings; 6 radial magnetic field generating meanss; 7 intermediate connecting shafts; 8 radial magnetic field generating means iron cores; 9 radial magnetic field generating means coils; 10 axial distance sensors; 11 axial magnetic field generating means iron cores; 12 axial magnetic field generating means coils; 13 balance shaft sheath bodies; 14 radial distance sensors.
Detailed description of the invention
In the present embodiment, as shown in Figure 1, a kind of magnetic levitation balanced axle system, is comprised left side structure and right side structure, and is connected by intermediate connecting shaft 7; Left side structure and right side structure are symmetrical structure, and the two ends, left and right of intermediate connecting shaft 7 are connected with the balance shaft support 2b of right side with the balance shaft support 2a of left side respectively, and point of connection lays respectively at the underpunch place of two balance shaft supports; Below for wherein arbitrary side portion structure, introduce the principle of work of this balance shaft system; Wherein arbitrary side portion structure comprises: balance shaft housing, balance shaft mandrel and balance shaft support 2; The side of balance shaft mandrel is set with balance shaft housing; Opposite side is set with balance shaft support;
Balance shaft housing is set and balance shaft mandrel is integral type structure, thus forms new-type balance shaft housing 1; Balance sleeve 3 is set with at the cylindrical end of new-type balance shaft housing 1; And balance shaft support 2 is set with on balance sleeve 3, cover holding position is the upper hole place of balance shaft support 2; Thus make new-type balance shaft housing 1, can forming position relation one or position relationship two between balance shaft support 2 and balance sleeve 3;
Position relationship one is:
Diameter clearance and endplay is there is between new-type balance shaft housing 1 and balance sleeve 3; And be relative fixing between balance shaft support 2 with balance sleeve 3; Diameter clearance makes diametrically float between new-type balance shaft housing 1 and balance sleeve 3; Endplay makes new-type balance shaft housing 1 axial without relatively contacting with between balance shaft axle sleeve 3; So just achieve frictionless contact between new-type balance sleeve 1 and balance sleeve 3.
Position relationship two is:
Diameter clearance and endplay is there is between balance shaft support 2 and balance shaft axle sleeve 3; And new-type balance shaft housing 1 be relative fixing between balance shaft support 2; Diameter clearance makes diametrically float between balance shaft support 2 and balance shaft axle sleeve 3; Endplay makes between balance shaft support 2 with balance shaft axle sleeve 3 axially without relatively contacting; So just achieve frictionless contact between balance sleeve 3 and balance shaft axle sleeve 3.
Balance sleeve 3 is bilateral symmetry, and its structure comprises: for realizing related components and the balance sleeve shell 13 of magnetic suspension function;
The both sides end face of balance shaft sheath body 13 is evenly distributed with related components for realizing magnetic suspension function respectively; The two sides of balance shaft sheath body 13 are distributed and are provided with hole slot structure, for installing parts; Parts comprise: axial magnetic field generating means 4, radial magnetic field generating means 6, axial distance sensor 10 and radial distance sensor 14; In order to make compact conformation, facilitate practical function, and stressing conditions is better, related components can be that example is arranged according to Fig. 2 mode, namely field generator for magnetic 4, axial distance sensor 10 and radial distance sensor 14 can be respectively 4, be uniformly distributed in balance shaft sheath body 13 end face, and be spaced from each other;
One control system is set;
Control system is connected with the parts at balance shaft sheath body 13 two ends respectively, for obtaining the endplay signal of axial distance sensor 10, and the diameter clearance signal of radial distance sensor 14; And actuating spindle is strong and weak to the magnetic field of field generator for magnetic 4, and the magnetic field of radial magnetic field generating means 6 is strong and weak; Thus change magnetic force size, come to balance with external force, thus realize system dynamical equilibrium in the course of the work.
Axial magnetic field generating means 4 is made up of the first iron core 11 and the first coil 12, and the first coil 12 is wound on the first iron core 11, thus produces the axial magnetic field needed.
Radial magnetic field generating means 6 is made up of the second iron core 8 and the second coil 9, and the second coil 9 is wound on the second iron core 8, for generation of the radial magnetic field needed; The inner end surface of the second iron core 8 is cylindrical surface structure, and the circular arc of inner end surface is concentric with the cylindrical end of Novel balance axle housing 1; Thus ensure that the magnetic force suffered by Novel balance axle housing 1 passes through the center of circle, be convenient to the control of structure, ensure stable movement, its structure is as shown in Figure 4.
In position relationship one, radial magnetic field generating means 6 is evenly distributed on the end face of below balance shaft sheath body 13 axis; In position relationship two, radial magnetic field generating means 6 is evenly distributed on the end face of more than balance shaft sheath body 13 axis;
As shown in Figure 3, the end face of balance shaft sheath body 13 is provided with two radial magnetic field generating meanss 6; And two radial magnetic field generating meanss 6 are symmetrical relative to the vertical plane at the axis place of balance shaft sheath body 13; The angle of the vertical plane at any one radial magnetic field generating means and axis place is α, regulates magnetic field strong and weak with angle α.For position relationship 1, two radial magnetic field generating meanss 6 are positioned at below balance shaft sheath body 13 axis and distribute for claiming relative to the vertical plane at the axis place of balance shaft sheath body 13, if the value of α is strong and weak at controlling magnetic field, making external force and magnetic field force reach in dynamical equilibrium, play key role.
Between balance shaft support 2 and balance shaft housing 1, be provided with sealing arrangement 5, form the two ends hermetically-sealed construction of balance shaft axle sleeve 3 with sealing arrangement 5.
Control system carrys out controlling magnetic field power by controlling electric current power, thus realizes balance shaft housing 1 suspension in all directions.
For position relationship one, whole balance shaft system working process is as follows:
Upon power-up of the system, balance shaft housing 1 outermost end is subject to power straight up, diameter clearance between the cylindrical end of balance shaft housing 1 and balance sleeve 3 is reduced, radial distance sensor 14 constantly monitors gap length, when gap reaches setting value, size of current in control system controlling magnetic field producer 6, magnetic field is made to produce the magnetic force contrary with application force, make gap reduce speed to slow down, when magnetic force is greater than application force, gap increases, but opposite side gap reduces, when opposite side gap is reduced to setting value, change size of current, magnetic field force is made to be less than external force, thus change gap, circulation like this, system is finally made to reach dynamical equilibrium.If when external force after system dynamical equilibrium is disturbed change size, thus gap length changes, the balance making system reach new by adjusting electric current according to same principle control system.When system axial is stressed, according to same principle, by adjusting shaft to size of current in magnetic field generator 4, system axial is balanced, two relative turning end face no touchs.
Claims (7)
1. a magnetic levitation balanced axle system, comprises left side structure and right side structure, and is connected by intermediate connecting shaft (7); Described left side structure and right side structure are symmetrical structure; Wherein arbitrary side portion structure comprises: balance shaft housing, balance shaft mandrel and balance shaft support (2); The side of described balance shaft mandrel is set with described balance shaft housing; Opposite side is set with described balance shaft support; It is characterized in that:
Balance shaft housing is set and described balance shaft mandrel is integral type structure, thus forms new-type balance shaft housing (1); Balance sleeve (3) is set with at the cylindrical end of described new-type balance shaft housing (1); And described balance shaft support (2) is set with on described balance sleeve (3); Thus make described new-type balance shaft housing (1), can forming position relation one or position relationship two between described balance shaft support (2) and described balance sleeve (3);
Described position relationship one is:
Diameter clearance and endplay is there is between described new-type balance shaft housing (1) and described balance sleeve (3); And described balance shaft support (2) be relative fixing between described balance sleeve (3); Described diameter clearance makes diametrically float between described new-type balance shaft housing (1) and described balance sleeve (3); Described endplay makes between described new-type balance shaft housing (1) with described balance shaft axle sleeve (3) axially without relatively contacting;
Described position relationship two is:
Diameter clearance and endplay is there is between described balance shaft support (2) and described balance shaft axle sleeve (3); And described new-type balance shaft housing (1) be relative fixing between described balance shaft support (2); Described diameter clearance makes radial energy Relative Floating between described balance shaft support (2) and described balance shaft axle sleeve (3); Described endplay makes between described balance shaft support (2) with described balance shaft axle sleeve (3) axially without relatively contacting;
Described balance sleeve (3) comprising: parts and balance sleeve shell (13);
The both sides end face of described balance shaft sheath body (13) is evenly distributed with described parts respectively; Described parts comprise: axial magnetic field generating means (4), radial magnetic field generating means (6), axial distance sensor (10) and radial distance sensor (14);
One control system is set;
Described control system is connected with the parts at described balance shaft sheath body (13) two ends respectively, for obtaining the endplay signal of described axial distance sensor (10), and the diameter clearance signal of described radial distance sensor (14); And the magnetic field controlling described axial magnetic field generating means (4) is strong and weak, and the magnetic field of described radial magnetic field generating means (6) is strong and weak.
2. magnetic levitation balanced axle system according to claim 1, it is characterized in that: described axial magnetic field generating means (4) is made up of the first iron core (11) and the first coil (12), described first coil (12) is wound on described first iron core (11), thus produces axial magnetic field.
3. magnetic levitation balanced axle system according to claim 1, it is characterized in that: described radial magnetic field generating means (6) is made up of the second iron core (8) and the second coil (9), described second coil (9) is wound on described second iron core (8), for generation of radial magnetic field; The inner end surface of described second iron core (8) is cylindrical surface structure, and the circular arc of inner end surface is concentric with the cylindrical end of described balance shaft housing (1).
4. magnetic levitation balanced axle system according to claim 1, is characterized in that: in described position relationship one, and described radial magnetic field generating means (6) is evenly distributed on the end face of below described balance shaft sheath body (13) axis; In described position relationship two, described radial magnetic field generating means (6) is evenly distributed on the end face of more than described balance shaft sheath body (13) axis.
5. magnetic levitation balanced axle system according to claim 4, is characterized in that: on the end face of described balance shaft sheath body (13), be provided with two radial magnetic field generating meanss (6); And described two radial magnetic field generating meanss (6) are symmetrical relative to the vertical plane at the axis place of described balance shaft sheath body (13); The angle of the vertical plane at any one radial magnetic field generating means and described axis place is α, regulates magnetic field strong and weak with described angle α.
6. magnetic levitation balanced axle system according to claim 1, it is characterized in that: between described balance shaft support (2) and described balance shaft housing (1), be provided with sealing arrangement (5), form the two ends hermetically-sealed construction of described balance shaft axle sleeve (3) with described sealing arrangement (5).
7. magnetic levitation balanced axle system according to claim 1, is characterized in that: described control system carrys out controlling magnetic field power by controlling electric current power, thus realizes described balance shaft housing (1) suspension in all directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510652250.8A CN105150795B (en) | 2015-10-08 | 2015-10-08 | A kind of magnetic levitation balanced axle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510652250.8A CN105150795B (en) | 2015-10-08 | 2015-10-08 | A kind of magnetic levitation balanced axle system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105150795A true CN105150795A (en) | 2015-12-16 |
| CN105150795B CN105150795B (en) | 2017-09-22 |
Family
ID=54791968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510652250.8A Expired - Fee Related CN105150795B (en) | 2015-10-08 | 2015-10-08 | A kind of magnetic levitation balanced axle system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105150795B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110271366A (en) * | 2019-05-20 | 2019-09-24 | 南京航空航天大学 | A kind of active magnetic wheel |
| CN111442051A (en) * | 2020-04-24 | 2020-07-24 | 中国舰船研究设计中心 | Active thrust balance type shafting longitudinal vibration damper |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033606A (en) * | 1975-08-06 | 1977-07-05 | Reyco Industries, Inc. | Vehicle tandem suspensions |
| CN101135343A (en) * | 2007-10-16 | 2008-03-05 | 上海大学 | Intelligent magnetic bearing |
| CN104533945A (en) * | 2015-01-05 | 2015-04-22 | 山东大学 | Structure for achieving five-freedom-degree suspension of rotor through axial mixed magnetic bearings |
| CN104553667A (en) * | 2013-10-22 | 2015-04-29 | 星源(十堰)悬架有限公司 | Balance shaft assembly |
| CN204955999U (en) * | 2015-10-08 | 2016-01-13 | 合肥工业大学 | Balanced shafting of magnetic suspension all |
-
2015
- 2015-10-08 CN CN201510652250.8A patent/CN105150795B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033606A (en) * | 1975-08-06 | 1977-07-05 | Reyco Industries, Inc. | Vehicle tandem suspensions |
| CN101135343A (en) * | 2007-10-16 | 2008-03-05 | 上海大学 | Intelligent magnetic bearing |
| CN104553667A (en) * | 2013-10-22 | 2015-04-29 | 星源(十堰)悬架有限公司 | Balance shaft assembly |
| CN104533945A (en) * | 2015-01-05 | 2015-04-22 | 山东大学 | Structure for achieving five-freedom-degree suspension of rotor through axial mixed magnetic bearings |
| CN204955999U (en) * | 2015-10-08 | 2016-01-13 | 合肥工业大学 | Balanced shafting of magnetic suspension all |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110271366A (en) * | 2019-05-20 | 2019-09-24 | 南京航空航天大学 | A kind of active magnetic wheel |
| CN110271366B (en) * | 2019-05-20 | 2024-03-29 | 南京航空航天大学 | Active magnetic suspension wheel |
| CN111442051A (en) * | 2020-04-24 | 2020-07-24 | 中国舰船研究设计中心 | Active thrust balance type shafting longitudinal vibration damper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105150795B (en) | 2017-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2633129C1 (en) | Vehicle motor wheel and vehicle with such motor wheel | |
| CN102223984B (en) | Bearing arrangement having a magnetic bearing segment, and method for controlling a or the bearing arrangement | |
| US10119592B2 (en) | Vehicle drivetrain with active magnetic bearings | |
| CN201818660U (en) | Permanent magnet radial bearing | |
| GB1570630A (en) | Mountings for shafts and other elongate rotary bodies | |
| CN204572785U (en) | A kind of composite structure of permanent magnetism magnetic suspension bearing | |
| CN104201935A (en) | Four-degrees-of-freedom magnetic suspension flywheel | |
| CN202612391U (en) | Five-freedom-degree all-permanent-magnet suspension bearing rotor system | |
| CN201696491U (en) | Conical permanent magnetic suspended inner rotor hybrid magnetic bearing | |
| CN104214216A (en) | Four-degree-of-freedom inner rotor magnetic bearing | |
| CN105150795A (en) | Magnetic-suspension balance shaft system | |
| CN204955999U (en) | Balanced shafting of magnetic suspension all | |
| CN108715235B (en) | Magnetic suspension universal deflection shock insulation nacelle for satellite | |
| CN104989727B (en) | Combined-type five-degree-of-freedom electromagnetic bearing | |
| CN110071598B (en) | Vehicle-mounted flywheel battery with radial gyro effect resistance | |
| CN201621198U (en) | Heavy-type cross-axle universal coupler | |
| CN111102293A (en) | Active and passive magnetic-gas hybrid bearing | |
| EP3825563A1 (en) | Magnetic bearing | |
| CN102374233A (en) | Permanent-magnetic electric suspension bearing | |
| CN201730963U (en) | Permanent magnet electric suspension bearing | |
| CN112065853A (en) | Outer winding controlled inner and outer double-rotor hybrid magnetic bearing | |
| CN106321631A (en) | Five-degree-of-freedom magnetic suspension bearing system | |
| EP4058684A1 (en) | Suspension with electromagnetic damper | |
| CN201982504U (en) | Permanent magnet suspension bearing and mounting structure thereof | |
| CN202158081U (en) | Half-magnetostatic magnetic suspension vertical bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170922 Termination date: 20201008 |