CN101324255A - Controllable type permanent magnetism magnetic suspension vibration damping spring with air damping cavity - Google Patents
Controllable type permanent magnetism magnetic suspension vibration damping spring with air damping cavity Download PDFInfo
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- CN101324255A CN101324255A CNA2008100405144A CN200810040514A CN101324255A CN 101324255 A CN101324255 A CN 101324255A CN A2008100405144 A CNA2008100405144 A CN A2008100405144A CN 200810040514 A CN200810040514 A CN 200810040514A CN 101324255 A CN101324255 A CN 101324255A
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- pedestal
- stator
- magnetic suspension
- permanent magnetism
- damping
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Abstract
The invention relates to a controllable permanent magnet magnetic suspension damping spring with an air damping chamber. The damping spring comprises a pedestal, a support shaft, an casing, a rotor, a displacement sensor, a stator, a stator excitation winding and an electromagnetic controller, wherein, the pedestal has a cylindrical structure; a chamber is formed in the centre of the pedestal and used as the air damping chamber; one end of the supporting shaft is inserted in the air damping chamber; the casing is fixed to the pedestal; the rotor is arranged on the support shaft; a guide rod is arranged on the rotor; a pore path is formed on the pedestal; the displacement sensor is arranged at the port of the pore path of the pedestal and corresponds to the guide rod; the stator is arranged outside the rotor; a gap is kept between the rotor and the stator and filled with ferromagnetic material powder; the stator excitation winding is arranged on the stator; and the electromagnetic controller is electrically connected with the displacement sensor and the stator excitation winding respectively to form a closed loop control system. In the controllable permanent magnet magnetic suspension damping spring, magnetic attraction is used as elasticity, and the spring body and the damping chamber are integrated, so that the vibration damping effect is obviously improved. At the same time, the magnetic attraction, namely magnetic suspension force adopts the combination of permanent magnetic attraction and electromagnetic force, so that the magnetic suspension force can be effectively controlled according the difference of the loading, thereby improving the elasticity property of the spring.
Description
Technical field
The present invention relates to a kind of spring, specifically, relate to the controllable type permanent magnetism magnetic suspension shock-absorbing spring that a kind of employing permanent magnetism power that is used for vibration damping adds the band air damping chamber of controllable electromagnetic power structure.
Background technique
Known spring generally all is to be formed by the Spring Steel Wire coiling, is installed under the object, promptly object is played the resilient support effect, then adopts the scheme of spring fueling cavity damping pad for the demanding occasion of vibration damping.But owing to spring directly contacts with supporter, so, limited to the effectiveness in vibration suppression of object.And, because the spring inherent characteristic is fixed, so, can not regulate its characteristic according to loaded variation.
The present invention causes utilizing magnetic attraction to constitute spring, makes supporting object be in magnetic suspension state by magnetic force, thereby, effectively improve effectiveness in vibration suppression; And, constituted the basic magnetic suspension force of spring by the high-performance permanent magnet of mover, simultaneously, be installed in the field current of exciting winding on the stator, the size that can regulate magnetic suspension force as required by adjusting; Then adopt the damping function in the air damping chamber that carries to reduce the vibration that shock load produced for shock load, make and apply in the demanding occasion of vibration damping.
Summary of the invention
The objective of the invention is for a kind of controllable type permanent magnetism magnetic suspension shock-absorbing spring with the air damping chamber is provided, compared with prior art, adopt magnetic attraction as elastic force, and be spring body and damping cavity one, can obviously improve effectiveness in vibration suppression, and, compact structure, simultaneously, magnetic attraction is that magnetic suspension force adopts basic permanent magnetism magnetic attraction to add the combining form of electromagnetic force, can be according to loaded difference, effectively control magnetic suspension force, thereby improve the resiliency characteristics of spring, in addition, fill the ferromagnetic material powder in the air dielectric of permanent magnetism type magnetic suspension structure, the unit's of making magnetic energy can produce bigger magnetic suspension force.
For achieving the above object, technological scheme of the present invention is,
The controllable type permanent magnetism magnetic suspension shock-absorbing spring in band air damping chamber comprises, pedestal, and column structure, its central authorities offer a cavity as the damping air cavity, and the bottom has inlet hole, and establishes diaphragm seal cooperation retaining screw fixing seal; Back shaft, its external diameter and pedestal damping air cavity internal diameter are complementary, and the one end is inserted in pedestal damping air cavity; Case is fixed on the pedestal, and described back shaft free end stretches out case; Mover, it is a permanent magnet, ring structure is sheathed on the back shaft in the case; Also establish a guide rod on it, accordingly, have the duct of inserting on the described pedestal for this guide rod; Displacement transducer is arranged at duct on the pedestal, and to should guide rod; Stator is arranged at case inboard, the mover outside, and it is ferromagnetic material, permanent magnet; Keep certain interval between mover and the stator, fill the ferromagnetic material powder in the gap; The stator excitation winding is arranged on the stator; Electromagnetic controller electrically connects displacement transducer and stator excitation winding respectively, forms a closed loop control system.
Further, the present invention comprises that also two are beneficial to the bearing that back shaft rotates, and are arranged between back shaft and case respectively and the pedestal place.
Described bearing adopts permanent-magnetic clamp, cooperates with the magnetic field polarity of mover and back shaft, realizes the magnetic suspension between axle and bearing.
Again, described case comprises base plate, shell and end cap; Base plate, end cap central authorities offer a through hole, and described bearing is arranged at this through hole.
Described case is fixed on the pedestal by fixed block; This case adopts ferromagnetic material to make.
Described displacement transducer is arranged at duct port on the pedestal; Described displacement transducer adopts the linear grating sensor.
In addition, stator of the present invention adopts the high steel of permeability, and mover adopts permanent magnetic steel to make.
Have, also offer the staor winding groove on the described stator, the stator excitation winding embeds in the staor winding groove.
The working principle of controllable type permanent magnetism magnetic suspension shock-absorbing spring of the present invention is as follows:
Mover is a permanent magnetic steel, the stator that constitutes with silicon steel constitutes magnetic circuit, utilize reluctance force to produce the basic magnetic attraction (the vertical installation produces magnetic suspension force) of spring, stator is made of permeability big steel and exciting winding, field current makes stator core produce electromagnetic force, stator field and mover magnetic field cooperatively interact by there is a natural attraction between the sexes, thereby with permanent magnetism power and electromagnetic force superposition mutually, increased the suction (magnetic suspension force) between moving stator, the field current that changes exciting winding can change the excited state of stator, thereby change the suction (magnetic suspension force) between moving stator, usually stator and pedestal fix, and supporting object and mover link, and institute's plus-pressure increases on mover, then mover and stator dislocation, magnetic attraction (magnetic suspension force) increases between the two, and when the pressure position that oversteps the extreme limit, then magnetic attraction (magnetic suspension force) reduces between the two, lost efficacy for magnetic suspension this moment, then relies on the limit position statue to pay for sheet first and support.
For reducing the magnetic resistance in the magnetic circuit, to improve the magnetic efficiency of unit magnetic energy, the present invention has filled the ferromagnetic material powder between mover and stator, and this just significantly improves mover and stator magnetic attraction (magnetic suspension force) between the two.
For reducing the vibration that shock load produces, the air damping chamber has been installed on the mover stroke, by the pressurized air in the air cavity to overcome the vibration that shock load is produced.
The electric current of staor winding be need control for controlling magnetic attraction, for this reason, rotor position sensor, electromagnetic controller are provided with.
Beneficial effect of the present invention
The present invention produces magnetic attraction (magnetic suspension force) between mover and the stator when vertical the installation, because the magnetic suspension structure between mover and the stator, as long as magnetic suspension force is enough big, effective supporting object not only, and, isolate the vibration that pedestal produces effectively, thereby suppressed vibration effectively.
Simultaneously, magnetic suspension force has adopted basic permanent magnetism suction to add the combining form of electromagnetic force, and the field current that changes exciting winding can change the excited state of stator, thereby changes the suction (magnetic suspension force) between moving stator, can regulate elastic characteristic effectively.In addition,, constitute closed loop control, can improve control performance effectively with controller because the rotor position sensor has been installed.
Because the present invention has filled the ferromagnetic material powder between mover and stator, this has just reduced the magnetic circuit magnetic resistance greatly, magnetic flux in the magnetic loop is obviously improved, thereby improved mover and stator magnetic attraction (magnetic suspension force) between the two greatly, the magnetic energy of permanent magnetic steel is fully utilized.
Because the limit position plastic cement is paid for first the bottom that sheet is installed in the mover magnet steel, simultaneously, magnetic attraction (magnetic suspension force) maximum point is set to limit position, caused impact when so just having avoided pressure to overstep the extreme limit.
Owing on the stroke of mover shaft coupling, be provided with the air damping chamber, effectively overcome the vibration that shock load produced by the pressurized air in the air damping chamber, reduced the vibration that shock load produced.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention;
Fig. 2 is the cooperation schematic representation of back shaft, mover, stator and bearing in one embodiment of the invention;
Fig. 3 is an Electromagnetic Control schematic representation of the present invention;
Fig. 4 is the other embodiment's of the present invention schematic representation.
Embodiment
Referring to Fig. 1, Fig. 2, the controllable type permanent magnetism magnetic suspension shock-absorbing spring in band air damping of the present invention chamber comprises, pedestal 1, back shaft 2, case 3, mover 4, stator 5, stator excitation winding 6, electromagnetic controller 7;
Pedestal 1, column structure, its central authorities offer a cavity as damping air cavity 100, and the bottom has inlet hole 101, and establishes diaphragm seal 8 cooperation retaining screws 9 fixing seals; Back shaft 2, its external diameter and pedestal 1 damping air cavity 100 internal diameters are complementary, and the one end is inserted in pedestal damping air cavity 100, and seal ring 16 is established in this end;
The Electromagnetic Control schematic diagram as shown in Figure 3, stator excitation winding 6 adopts DC excitation, electromagnetic controller 7, displacement transducer 12 and stator excitation winding 6 form a closed loop control system, and electromagnetic controller 7 is according to the SC sigmal control stator excitation winding 6 of displacement transducer 12 feedbacks.
See also Fig. 4 again, another embodiment of the present invention, bearing 15 of the present invention in this embodiment adopts permanent-magnetic clamp, cooperates with the magnetic field polarity of mover 4 and back shaft 2, realizes the magnetic suspension between axle and bearing.
Claims (10)
1. the controllable type permanent magnetism magnetic suspension shock-absorbing spring in band air damping chamber is characterized in that, comprise,
Pedestal, column structure, its central authorities offer a cavity as the damping air cavity, and the bottom has inlet hole, and establishes diaphragm seal cooperation retaining screw fixing seal;
Back shaft, its external diameter and pedestal damping air cavity internal diameter are complementary, and the one end is inserted in pedestal damping air cavity;
Case is fixed on the pedestal, and described back shaft free end stretches out case;
Mover, it is a permanent magnet, ring structure is sheathed on the back shaft in the case; Also establish a guide rod on it, accordingly, have the duct of inserting on the described pedestal for this guide rod;
Displacement transducer is arranged at duct on the pedestal, and to should guide rod;
Stator is arranged at case inboard, the mover outside, and it is ferromagnetic material; Keep certain interval between mover and the stator, fill the ferromagnetic material powder in the gap;
The stator excitation winding is arranged on the stator;
Electromagnetic controller electrically connects displacement transducer and stator excitation winding respectively, forms a closed loop control system.
2. the controllable type permanent magnetism magnetic suspension shock-absorbing spring in band air damping as claimed in claim 1 chamber is characterized in that, comprises that also two are beneficial to the bearing that back shaft slides, and are arranged between back shaft and case respectively and the pedestal place.
3. the controllable type permanent magnetism magnetic suspension shock-absorbing spring in band air damping as claimed in claim 1 chamber is characterized in that described case comprises base plate, shell and end cap; Base plate, end cap central authorities offer a through hole, and described bearing is arranged at this through hole.
4. the controllable type permanent magnetism magnetic suspension shock-absorbing spring in band air damping as claimed in claim 2 chamber is characterized in that, described bearing adopts permanent-magnetic clamp, cooperates with the magnetic field polarity of mover and back shaft, realizes the magnetic suspension between axle and bearing.
5. as the controllable type permanent magnetism magnetic suspension shock-absorbing spring in claim 1 or 3 described band air damping chambeies, it is characterized in that described case is fixed on the pedestal by fixed block.
6. the controllable type permanent magnetism magnetic suspension shock-absorbing spring in band air damping as claimed in claim 1 chamber is characterized in that described displacement transducer is arranged at duct port on the pedestal.
7. as the controllable type permanent magnetism magnetic suspension shock-absorbing spring in claim 1 or 6 described band air damping chambeies, it is characterized in that described displacement transducer adopts the linear grating sensor.
8. the controllable type permanent magnetism magnetic suspension shock-absorbing spring in the described band air damping of claim 1 chamber is characterized in that, also offers the staor winding groove on the described stator, and the stator excitation winding embeds in this staor winding groove.
9. the controllable type permanent magnetism magnetic suspension shock-absorbing spring in band air damping as claimed in claim 1 chamber is characterized in that, described stator adopts the high steel of permeability, and mover adopts permanent magnetic steel to make.
10. the controllable type permanent magnetism magnetic suspension shock-absorbing spring in claim 1 or 3 described band air damping chambeies is characterized in that, described case adopts ferromagnetic material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100405144A CN101324255B (en) | 2008-07-11 | 2008-07-11 | Controllable type permanent magnetism magnetic suspension vibration damping spring with air damping cavity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100405144A CN101324255B (en) | 2008-07-11 | 2008-07-11 | Controllable type permanent magnetism magnetic suspension vibration damping spring with air damping cavity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101324255A true CN101324255A (en) | 2008-12-17 |
| CN101324255B CN101324255B (en) | 2011-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100405144A Expired - Fee Related CN101324255B (en) | 2008-07-11 | 2008-07-11 | Controllable type permanent magnetism magnetic suspension vibration damping spring with air damping cavity |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013181950A1 (en) * | 2012-06-09 | 2013-12-12 | Harbin Institute Of Technology | Active vibration isolation device based on electromagnetic and aerostatic floatation |
| CN105605135A (en) * | 2016-01-26 | 2016-05-25 | 南京航空航天大学 | Magnetic suspension dynamic vibration absorber as well as vibration absorption system and working method of magnetic suspension dynamic vibration absorber |
| CN113898290A (en) * | 2021-10-09 | 2022-01-07 | 龙岩学院 | Ground source heat pump building construction device based on control of making an uproar falls in driving system |
| CN115949689A (en) * | 2022-12-13 | 2023-04-11 | 苏州科技大学 | Multi-degree-of-freedom damper for rod-shaped structure |
-
2008
- 2008-07-11 CN CN2008100405144A patent/CN101324255B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013181950A1 (en) * | 2012-06-09 | 2013-12-12 | Harbin Institute Of Technology | Active vibration isolation device based on electromagnetic and aerostatic floatation |
| GB2515660A (en) * | 2012-06-09 | 2014-12-31 | Harbin Inst Of Technology | Active vibration isolation device based on electromagnetic and aerostatic floatation |
| GB2515660B (en) * | 2012-06-09 | 2018-12-19 | Harbin Inst Technology | Active vibration isolation device based on electromagnetic and aerostatic floatation |
| CN105605135A (en) * | 2016-01-26 | 2016-05-25 | 南京航空航天大学 | Magnetic suspension dynamic vibration absorber as well as vibration absorption system and working method of magnetic suspension dynamic vibration absorber |
| CN113898290A (en) * | 2021-10-09 | 2022-01-07 | 龙岩学院 | Ground source heat pump building construction device based on control of making an uproar falls in driving system |
| CN113898290B (en) * | 2021-10-09 | 2023-09-22 | 龙岩学院 | Ground source heat pump building construction device based on power system noise reduction control |
| CN115949689A (en) * | 2022-12-13 | 2023-04-11 | 苏州科技大学 | Multi-degree-of-freedom damper for rod-shaped structure |
| CN115949689B (en) * | 2022-12-13 | 2024-08-02 | 苏州科技大学 | Multi-degree-of-freedom damper for rod-shaped structure |
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| Publication number | Publication date |
|---|---|
| CN101324255B (en) | 2011-03-09 |
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Granted publication date: 20110309 Termination date: 20130711 |