CN104019179A - Air spring-magnetic suspension combined vibration isolator - Google Patents
Air spring-magnetic suspension combined vibration isolator Download PDFInfo
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- CN104019179A CN104019179A CN201410249489.6A CN201410249489A CN104019179A CN 104019179 A CN104019179 A CN 104019179A CN 201410249489 A CN201410249489 A CN 201410249489A CN 104019179 A CN104019179 A CN 104019179A
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Abstract
The invention discloses an air spring-magnetic suspension combined vibration isolator. The combined vibration isolator comprises air springs (17), a magnetic suspension vibration isolator body (18) and a connecting component (19). The magnetic suspension vibration isolator body (18) is arranged between inner bag bodies (7) of the air springs (17). The connecting component (19) comprises a thrust disc (4), a pressing plate (5) and balls (3) with a holder, wherein the balls (3) with the holder are arranged on the thrust disc (4) in the vertical direction. The thrust disc (4) and the pressing plate (5) are connected with a connecting rod (1) of the magnetic suspension vibration isolator body (18) and an upper cover plate (8) of the air springs (17). The air spring-magnetic suspension combined vibration isolator has the advantages of being wide in working band, high in reliability, compact in structure, high in bearing capacity, convenient to maintain and the like and has great application prospects in the field of marine power plant vibration isolation.
Description
Technical field
What the present invention relates to is the moving hybrid isolator of a kind of main quilt, and specifically a kind of main quilt by pneumatic spring and magnetic suspended isolation device parallel operation is moved hybrid isolator, is mainly used in the vibration isolation of power equipment peculiar to vessel or other large loading devices.
Background technique
It is one of main noise of boats and ships that marine main engine moves the construct noise exciting, and its energy transmits by supporting member, and adopts vibration isolation technique can effectively reduce the construct noise of boats and ships, and this point is even more important to boats and ships especially Military Warship.
Vibration isolation is divided into active vibration isolation and two kinds of forms of passive vibration isolation.Passive vibration isolation is to add passive device in Vibration propagation approach, to reduce to be delivered to the ocsillator strenght of accepting structure, has feature simple in structure, to be easy to realization, reliable operation.For the passive vibration isolation of large load, can adopt bellow type air spring, have that bearing capacity is large, physical dimension is little, natural frequency is low, without the advantage such as standing wave effect, high-frequency vibration isolation performance be good, and the reliability of pneumatic spring and tightness can reach very high requirement, can significantly reduce the construct noise of boats and ships.But as the one of passive vibration isolation device, pneumatic spring, to low-frequency disturbance ability, even plays the effect of amplification near undesired signal system resonance frequency.And active vibration isolation is according to the dynamically bearing characteristics parameter of adjust system of control law of setting by active cell (as: active vibration insulator etc.), solve near the problem of the vibration and noise reducing of low frequency and resonant frequency, but it uses separately complex structure, energy consumption is larger.The vibration isolation technique research of the moving combination of main quilt is the focus of current research, magnetic suspended isolation device than other active vibration insulator have that Hz-KHz is wide, the life-span is long, it is fast, contactless to respond, and electromagnetic force and supporting parameter are easy to the advantage of controlling with the variation of controlling parameter, be a kind of comparatively ideal active vibration insulator.Magnetic suspended isolation device is combined with pneumatic spring, and composition main quilt is moved hybrid isolator, can give full play to the advantage of the two, and the shortcoming while avoiding again using separately, has better vibration isolating effect.
Chinese patent CN102748425A discloses a kind of device, it is by parallel with pneumatic spring monolateral one electromagnetic actuator integrated, and on coil, be provided with radiating fin realize heat radiation, can realize the synchronous effectively control of wideband vibration and line spectrum vibration, but electromagnetic actuator is directly placed in pneumatic spring inside, be inconvenient to keep in repair, and monolateral electromagnetic actuator is unfavorable for exporting the linearization between electromagnetic force and electric current, control accuracy is not high.Chinese patent CN101067433A has designed the superlow frequency vibration isolating device that differential electromagnetic actuator and pneumatic spring are arranged in parallel, by the displacement control to differential electromagnetic actuator for system provide negative stiffness with reduce system frequency, widen superlow frequency vibration isolating scope, but level of integration is low, overall dimensions is larger, inapplicable to the occasion that spatial requirement is higher, and the lateral displacement of the permission of differential type magnetic suspension actuator is little, in the time that device is subject to little side knock, transverse vibration, actuator is easily damaged.Chinese patent CN101067432A discloses a kind of device, it is that magnetic suspension unit is connected with pneumatic spring, effectively solve the problem that air spring vibrating insulative basement horizontal and longitudinal direction can not be taken into account, but apply to the vibration isolation of precision type instrument, inapplicable to the vibration isolation of Ship Power Equipment.
Summary of the invention
The object of the invention is to: in order to overcome above-mentioned the deficiencies in the prior art, provide that a kind of reliability is high, compact structure, bearing capacity be large, easy to maintenance, can efficiently isolate dither and effectively control pneumatic spring-magnetic suspension hybrid isolator that low frequency spectrum lines is vibrated.
Object of the present invention is realized by following technological scheme:
Pneumatic spring-magnetic suspension hybrid isolator provided by the invention, it comprises pneumatic spring, magnetic suspended isolation device and connected element; Described pneumatic spring, is provided with magnetic suspended isolation device in the middle of utricule in it; The band retainer ball that described connected element comprises thrust disc, pressing plate and arranges up and down at thrust disc, thrust disc, pressing plate are connected with the connecting rod of magnetic suspended isolation device, the upper cover plate of pneumatic spring respectively.
The circular pneumatic spring body of the sealing that described pneumatic spring can be made up of the upper cover plate being arranged in order, lower cover plate, interior utricule and outer utricule, in parallel with magnetic suspended isolation device integrated.
Described upper cover plate can carry out case-carbonizing or nitriding processing with band retainer ball contact position, and this upper cover plate has water hole and cable hole, and water hole is as the entrance of water-cooling tube, and cable hole is as the outlet of the extension cable of the displacement transducer of magnetic suspended isolation device; On described lower cover plate, have pore, for being filled with and discharging pressurized air, or this pore is opened on upper cover plate.
Described magnetic suspended isolation device can be differential type magnetic suspended isolation device, by measuring E type electromagnet wherein and the air gap of armature residual gap, controls the electric current of the coil on E type electromagnet, produces electromagnetic force, offsets and vibrates, and realizes vibration isolation.
Described magnetic suspended isolation device can comprise E type electromagnet, armature, coil, connecting rod, housing, linear bearing, base plate and displacement transducer; The relative armature of E type electromagnet that coil is housed is arranged symmetrically with, and is separately fixed on housing and base plate; Described housing and base plate are fixed on lower cover plate; Described connecting rod lower end is fixed with armature, and upper end is fixed on upper cover plate by thrust disc; Linear bearing and displacement transducer are all fixed on housing.
On described housing, can have rectangular spiral groove, as the water channel of cooling water, conduct the heat that electromagnet is produced be delivered in cooling water by heat, flow of cooling water is taken heat out of vibration isolator, reduces the heat exchange between magnetic suspended isolation device and pneumatic spring.
Described small end can have rectangle groove, rotates in a circumferential direction for limiting it, and upper end is with thrust disc for being threaded, and lower end and armature are fixed, and rotates thrust disc and can realize the adjustment of air gap between armature and E type electromagnet in the situation that limiting rod rotates.
Described displacement transducer can be eddy current displacement sensor, realizes the measurement of air gap between armature and E shape electromagnet by the position of measuring connecting rod.
Described linear bearing can play guiding to the motion of connecting rod, prevents stuck phenomenon.
Carbon stainless steel during the described retainer with retainer ball can adopt, ball can adopt Bearing Steel; Described thrust disc can adopt Bearing Steel, radially and all gapped between pressing plate and upper cover plate, produces in less transverse movement situation at pneumatic spring, and this gap has protective action to electromagnetism vibration isolator.
The present invention compared with prior art, has following major advantage:
(1). the pneumatic spring structure in the present invention is similar to bellow type air spring, has the advantages that bearing capacity is strong, as passive vibration isolation original paper, has good high-frequency vibration isolation performance.
(2). the air chamber at the pneumatic spring pressurized air place in the present invention is the cavity of sealing, the magnetic suspended isolation device integrated with pneumatic spring is placed in the space beyond air chamber, can not have influence on the tightness of pneumatic spring, and magnetic suspended isolation device is with sink, can not have influence on the temperature of air chamber internal compression air, thereby the impact of avoiding the thermal coupling between pneumatic spring and magnetic suspended isolation device to produce, also facilitates the installation and removal maintenance of magnetic suspended isolation device simultaneously.
(3). magnetic suspended isolation device is integrated into pneumatic spring inside by the present invention, have advantages of take up room little, level of integration is high, compact structure, easy to use.
(4). what the present invention adopted is differential type magnetic suspended isolation device, this vibration isolator has without lubricated, life-span length, response soon, the advantage that Frequency Response is good, low frequency is had to good vibration isolating effect, in equilibrium position among a small circle when internal vibration, magnetic suspended isolation device be used as power and electric current between can make linearization process, control accuracy is high.
(5). the present invention adopts parallel way integrated magnetic suspended isolation device and pneumatic spring, provide reliable support by pneumatic spring to equipment, magnetic suspended isolation device is without bearing static load, through the efficient vibration isolation of pneumatic spring, the transmission of vibrational energy has obtained effective attenuation, greatly reduce the power consumption of magnetic suspended isolation device control residual oscillation, compared with adopting series connection vibration isolation pattern, have that reliability is high, energy consumption is low, low cost and other advantages.
(6). the present invention is by integrated to pneumatic spring and magnetic suspended isolation device, and the advantage of comprehensive pneumatic spring high-frequency vibration isolation and the vibration isolation of magnetic suspended isolation device low frequency spectrum lines, has advantages of good wideband vibration isolation and low frequency spectrum lines vibration isolation.
(7). the present invention adopts connected element to realize pneumatic spring is connected with the structure of magnetic suspended isolation device, the in the situation that of pneumatic spring lateral stiffness deficiency, solve magnetic suspended isolation device and allowed the little shortcoming of lateral displacement, in the time being subject to little side knock or transverse vibration excitation, can not damage magnetic suspended isolation device, compared with other pneumatic spring-magnetic suspension hybrid isolators that adopt differential type magnetic suspended isolation device, application area is wider, can under the working environment that has little side knock, transverse vibration, work.
In sum, the present invention compares with prior art, its effect is clearly, have the advantages such as bearing capacity is strong, easy to maintenance, the life-span long, it is little to take up room, level of integration is high, energy consumption is low, reliability is high, vibration isolation Bandwidth, the main frame vibration isolation that can be ship domain provides good solution.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is pneumatic spring structural representation of the present invention.
Fig. 3 is magnetic suspended isolation device structural representation of the present invention.
Fig. 4 is connected element structural representation of the present invention.
In figure: 1. connecting rod; 2. linear bearing; 3. band retainer ball; 4. thrust disc; 5. pressing plate; 6. displacement transducer; 7. interior utricule; 8. upper cover plate; 9. lower cover plate; 10. housing; 11. base plates; 12.E type electromagnet; 13. armature; 14. coils; 15. outer utricules; 16. pores; 17. pneumatic springs; 18. magnetic suspended isolation devices; 19. connected elements; 20. water holes; 21. cable hole.
Specific embodiments
Provided by the invention a kind of by differential magnetic suspended isolation device and the integrated pneumatic spring-magnetic suspension hybrid isolator of pneumatic spring height, fully combine the advantage of pneumatic spring and magnetic suspended isolation device, realize wideband vibration isolation, have that quick response, reliability are high, a compact structure, bearing capacity feature large, easy to maintenance.
Below in conjunction with embodiment and accompanying drawing, the invention will be further described, but be not limited to described content below.
Pneumatic spring-magnetic suspension hybrid isolator provided by the invention, its structure as shown in Figures 1 to 4, comprises pneumatic spring 17, magnetic suspended isolation device 18 and connected element 19.Described pneumatic spring 17 is made up of upper cover plate 8, lower cover plate 9, the interior utricule 7 and the outer utricule 15 that are arranged between upper cover plate 8 and lower cover plate 9, in the middle of interior utricule 7, is provided with magnetic suspended isolation device 18.Described magnetic suspended isolation device 18 comprises E type electromagnet 12, armature 13, coil 14, connecting rod 1, housing 10, linear bearing 2, base plate 11 and displacement transducer 6; The relative armature 13 of E type electromagnet 12 that coil 14 is housed is arranged symmetrically with, and is separately fixed on housing 10 and base plate 11; Described housing 10 and base plate 11 are fixed on lower cover plate 9, and connecting rod 1 is led by the linear bearing 2 being fixed on housing 10; Described connecting rod 1 lower end is fixed with armature 13, and upper end is fixed on upper cover plate 8 by connected element 19, the displacement of measuring connecting rod 1 by the displacement transducer 6 being fixed on housing 10; Described connected element 19 comprise the thrust disc 4 that is connected with connecting rod 1, arrange up and down at thrust disc 4 with retainer ball 3 and be fixed on the pressing plate 5 on upper cover plate 8.
The structure of described pneumatic spring 17 as shown in Figure 2, the circular pneumatic spring body of the sealing being formed by upper cover plate 8, lower cover plate 9, interior utricule 7 and outer utricule 15, in parallel with magnetic suspended isolation device 18 integrated, the sealing of pneumatic spring 17 internal compression air can not be subject to the impact of magnetic suspended isolation device 18, and magnetic suspended isolation device 18 is also easy to remove and repair.
The material of described upper cover plate 8 can adopt steel No. 45, carries out case-carbonizing or nitriding processing with band retainer ball 3 contact position.This upper cover plate 8 has water hole 20 and cable hole 21, and water hole 20 is as the entrance of water-cooling tube, and cable hole 21 is as the outlet of the extension cable of displacement transducer 6.
Described lower cover plate 9 has pore 16, and for being filled with and discharging pressurized air, pore 16 also can be opened on upper cover plate 8.
The structure of described magnetic suspended isolation device 18 as shown in Figure 3, for differential type magnetic suspended isolation device, air gap and be 10mm between armature 13 and E type electromagnet 12, by measuring the air gap between upper end E type electromagnet 12 and armature 13, carry out the electric current of control coil 14, produce electromagnetic force, offset vibration, realize vibration isolation.Coil 14 is made up of upper end-coil and lower end coil, and two coil places are respectively equipped with an E type electromagnet 12.By upper end coil electricity, between upper end E type electromagnet 12 and armature 13, can produce magnetic circuit, armature 13 is subject to electromagnetic force upwards; By lower end coil electricity, between lower end E type electromagnet 12 and armature 13, produce magnetic circuit, armature 13 is subject to downward electromagnetic force, can control by the size of current of controlling upper and lower end coil the size and Orientation that the suffered electromagnetic force of armature 13 is made a concerted effort.When vibration source active force is upwards time, make between armature 13 and upper end electromagnet 12 air gap be less than and lower end electromagnet 12 between air gap, increase the electric current of lower end-coil, reduce the electric current of upper end-coil, armature 13 is subject to downward electromagnetic force and moves downward, otherwise reduces the electric current of lower end-coil, the electric current of end-coil in increase, armature 13 is subject to electromagnetic force upwards and moves upward, and makes the neutral position of armature 13 in two E type electromagnet 12.
On described housing 10, have rectangular spiral groove, as the water channel of cooling water, conduct the heat that E type electromagnet 12 is produced be delivered in cooling water by heat, flow of cooling water is taken heat out of vibration isolator, reduces the heat exchange between magnetic suspended isolation device 18 and pneumatic spring 17.
Described connecting rod 1 upper end has rectangle groove, rotates in a circumferential direction for limiting it, and upper end is with thrust disc 4 for being threaded, and lower end and armature 13 is fixing, rotates thrust disc 4 and can realize the adjustment of air gap between armature 13 and E type electromagnet 12 in the situation that limiting rod 1 rotates.
Described displacement transducer 6 is eddy current displacement sensor, is fixed on housing 10, is connected with the working state control end of magnetic suspended isolation device 18, can measure the air gap between armature 13 and the E shape electromagnet 12 being fixed on connecting rod 1 by the position of measuring connecting rod 1.
Described linear bearing 2 is fixed on housing 10, and the motion of connecting rod 1 is played to guiding, prevents stuck phenomenon.
Described thrust disc 4 adopts Bearing Steel; radially and between pressing plate 5 and upper cover plate 8, all have a gap of 5mm; produce and be less than in the transverse movement situation of 5mm at pneumatic spring 17, the transverse movement of upper cover plate 8 can not be delivered on connecting rod 1, and electromagnetism vibration isolator 18 is had to certain protective action.
Carbon stainless steel during the described retainer with retainer ball 3 adopts, ball adopts Bearing Steel.
The present invention is arranged on by between device for vibration insutation and pedestal, pneumatic spring 17 carries by the weight of device for vibration insutation and reduces the transmission to pedestal by device for vibration insutation dither, magnetic suspended isolation device 18 carries the dynamic load in vibration processes by device for vibration insutation, passes through the transmission of connected element 19 realizable forces between pneumatic spring 17 and magnetic suspended isolation device 18.Connected element 19 as shown in Figure 4, when upper cover plate 8 is subject to vibration while moving downward, disturbing force is passed through to pressing plate 5 successively, band retainer ball 3, thrust disc 4, connecting rod 1 is delivered to armature 13, what armature 13 produced is used as power successively by connecting rod 1, thrust disc 4, band retainer ball 3, pressing plate 5 is delivered to upper cover plate 8, when upper cover plate 8 is subject to vibration while moving upward, disturbing force is passed through to band retainer ball 3 successively, thrust disc 4, connecting rod 1 is delivered to armature 13, what armature 13 produced is used as power successively by connecting rod 1, thrust disc 4, band retainer ball 3 is delivered to upper cover plate 8.
In the present invention, magnetic suspended isolation device is contactless, and the advantage of high energy efficiency is the basis that is integrated into pneumatic spring 17 inside.
Working principle of the present invention is:
The present invention is arranged on by between device for vibration insutation and pedestal, the upper cover plate 8 of pneumatic spring-magnetic suspension hybrid isolator be connected by device for vibration insutation, and lower cover plate 9 is connected with pedestal.Pneumatic spring 17 is installed in parallel with magnetic suspended isolation device 18, and when original state, pneumatic spring 17 is in design height, and armature 13 is in two E type electromagnet 12 neutral positions, and two coils 14 load equal-sized initial current.In the course of the work, if the disturbing force that device for vibration insutation produces upwards acts on upper cover plate 8, be delivered to armature 13 via band retainer ball 3, thrust disc 4, connecting rod 1, make armature 13 depart from neutral position and move upward, control coil 14 size of current, reduce upper end coil current, lower end coil current strengthens, armature 13 is subject to downward electromagnetic force, acts on upper cover plate 8 by connecting rod 1, thrust disc 4, band retainer ball 3, offsets device for vibration insutation vibration.If device for vibration insutation produces downward disturbing force and acts on upper cover plate 8, be delivered to armature 13 via pressing plate 5, band retainer ball 3, thrust disc 4, connecting rod 1, making armature 13 depart from neutral position moves downward, control coil 14 size of current, upper end coil current is increased, and lower end coil current reduces, and armature 13 is subject to electromagnetic force upwards, act on upper cover plate 8 by connecting rod 1, thrust disc 4, band retainer ball 3, pressing plate 5, offset and vibrated by device for vibration insutation.
The present invention is as follows to armature 13 adjustment processes: by rotate in a circumferential direction degrees of freedom restriction of connecting rod 1, rotary thrust dish 4 makes armature 13 contact with lower end E type electromagnet 12, and measuring now displacement of connecting rod 1 by displacement transducer 6 is x
1, then counterrotating thrust disc 4, armature 13 is contacted with upper end E type electromagnet 12, measuring connecting rod 1 displacement now by displacement transducer 6 is x
2, then counterrotating thrust disc 4, make connecting rod 1 reach (x
2-x
1position)/2, now armature 13 is in two E type electromagnet 12 positions, middle.In the course of the work, it is x that displacement transducer 6 records connecting rod 1 displacement, and now between armature 13 and upper end E type electromagnet 12, air gap is (x-x
2), between armature 13 and upper end E type electromagnet 12, air gap is (x
1-x).
It is as follows that the present invention realizes cross-protection process to magnetic suspended isolation device 18: the spacing that radially all has 5mm between thrust disc 4 and pressing plate 5 and upper cover plate 8.In the time that upper cover plate 8 is subject to being less than the horizontal disturbance of 5mm; upper cover plate 8 radially produces certain motion, and band retainer ball 3 is subject to frictional force effect and produces rolling, and motion can not be delivered to thrust disc 4; thereby avoid connecting rod 1 to be subject to radial effect power, magnetic suspended isolation device 18 is carried out to cross-protection.
The present invention has adopted hybrid vibration isolation pattern in parallel, and magnetic suspended isolation device 18 is integrated in pneumatic spring 17, can make compact structure.The present invention is by pneumatic spring 17 support apparatus load, magnetic suspended isolation device 18 is without static supporting force is provided, the series connection vibration isolation pattern adopting than other types vibration isolator, there is less power consumption and the reliability of Geng Gao, magnetic suspended isolation device 18 is as active vibration isolation part, and carrying dynamic load, has contactless characteristic, unlubricated characteristic, there is good low frequency vibration isolation effect, and required active controlling force is lower.
The present invention uses operation as follows: pneumatic spring-magnetic suspension hybrid isolator is installed to by between device for vibration insutation and pedestal, first pneumatic spring 17 is filled with to pressurized air, make pneumatic spring 17 reach design height, then armature 13 is adjusted to two E type electromagnet 12 neutral positions, coil 14 is loaded to equal-sized initial current, the original state of pneumatic spring-magnetic suspension hybrid isolator is adjusted complete, can come into operation.
Above-described specific embodiment; object of the present invention, technological scheme and beneficial effect are further described; the foregoing is only specific embodiments of the invention; be unlikely to limit the present invention; within the spirit and principles in the present invention all; any amendment of making, improve, be equal to replacement etc., within protection scope of the present invention all should be included in.
Claims (10)
1. pneumatic spring-magnetic suspension hybrid isolator, is characterized in that: comprise pneumatic spring (17), magnetic suspended isolation device (18) and connected element (19); Described pneumatic spring (17), is provided with magnetic suspended isolation device (18) in the middle of utricule (7) in it; Described connected element (19) comprises thrust disc (4), pressing plate (5) and the band retainer ball (3) of arranging up and down at thrust disc (4), and thrust disc (4), pressing plate (5) are connected with the connecting rod (1) of magnetic suspended isolation device (18), the upper cover plate (8) of pneumatic spring (17) respectively.
2. pneumatic spring-magnetic suspension hybrid isolator according to claim 1, it is characterized in that: the circular pneumatic spring body of the sealing that described pneumatic spring (17) is made up of the upper cover plate being arranged in order (8), lower cover plate (9), interior utricule (7) and outer utricule (15), in parallel integrated with magnetic suspended isolation device (18).
3. pneumatic spring-magnetic suspension hybrid isolator according to claim 2, it is characterized in that: described upper cover plate (8) carries out case-carbonizing or nitriding processing with band retainer ball (3) contact position, this upper cover plate has water hole (20) and cable hole (21), water hole (20) is as the entrance of water-cooling tube, and cable hole (21) is as the outlet of the extension cable of the displacement transducer (6) of magnetic suspended isolation device (18); On described lower cover plate (9), have pore (16), for being filled with and discharging pressurized air, or this pore (16) is opened on upper cover plate (8).
4. pneumatic spring-magnetic suspension hybrid isolator according to claim 1, it is characterized in that: described magnetic suspended isolation device (18) is differential type magnetic suspended isolation device, by measuring the air gap between E type electromagnet (12) and armature (13) wherein, control the electric current of the coil (14) on E type electromagnet (12), produce electromagnetic force, offset vibration, realize vibration isolation.
5. pneumatic spring-magnetic suspension hybrid isolator according to claim 4, is characterized in that: described magnetic suspended isolation device (18) comprises E type electromagnet (12), armature (13), coil (14), connecting rod (1), housing (10), linear bearing (2), base plate (11) and displacement transducer (6); The relative armature (13) of E type electromagnet (12) that coil (14) is housed is arranged symmetrically with, and is separately fixed on housing (10) and base plate (11); Described housing (10) and base plate (11) are fixed on lower cover plate (9); Described connecting rod (1) lower end is fixed with armature (13), and upper end is fixed on upper cover plate (8) by thrust disc (4); Linear bearing (2) and displacement transducer (6) are all fixed on housing (10).
6. pneumatic spring-magnetic suspension hybrid isolator according to claim 5, it is characterized in that: described housing has rectangular spiral groove on (10), as the water channel of cooling water, conducting by heat the heat that electromagnet is produced is delivered in cooling water, flow of cooling water is taken heat out of vibration isolator, reduces the heat exchange between magnetic suspended isolation device (18) and pneumatic spring (17).
7. pneumatic spring-magnetic suspension hybrid isolator according to claim 5, it is characterized in that: described connecting rod (1) upper end has rectangle groove, being used for limiting it rotates in a circumferential direction, upper end with thrust disc (4) for being threaded, lower end and armature (13) are fixing, rotate thrust disc (4) and can realize the adjustment of air gap between armature (13) and E type electromagnet (12) in the situation that limiting rod (1) rotates.
8. pneumatic spring-magnetic suspension hybrid isolator according to claim 5, it is characterized in that: described displacement transducer (6) is eddy current displacement sensor, realize the measurement of air gap between armature (13) and E shape electromagnet (12) by the position of measuring connecting rod (1).
9. pneumatic spring-magnetic suspension hybrid isolator according to claim 5, is characterized in that: described linear bearing (2) plays guiding to the motion of connecting rod (1), prevents stuck phenomenon.
10. pneumatic spring-magnetic suspension hybrid isolator according to claim 1, is characterized in that: carbon stainless steel during the retainer of described band retainer ball (3) adopts, and ball adopts Bearing Steel; Described thrust disc (4) adopts Bearing Steel; radially and all gapped between pressing plate (5) and upper cover plate (8); produce in less transverse movement situation at pneumatic spring (17), this gap has protective action to electromagnetism vibration isolator (18).
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| CN201410249489.6A CN104019179B (en) | 2014-06-06 | 2014-06-06 | A kind of pneumatic spring-magnetic suspension hybrid isolator |
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| CN201410249489.6A CN104019179B (en) | 2014-06-06 | 2014-06-06 | A kind of pneumatic spring-magnetic suspension hybrid isolator |
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| CN104019179A true CN104019179A (en) | 2014-09-03 |
| CN104019179B CN104019179B (en) | 2016-01-20 |
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Cited By (12)
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| CN106641087A (en) * | 2015-11-04 | 2017-05-10 | 株洲时代新材料科技股份有限公司 | Electromagnetic type active vibration absorber |
| CN109681572A (en) * | 2018-11-30 | 2019-04-26 | 上海交通大学 | A kind of vibration isolation device and power-equipment |
| CN110785234A (en) * | 2018-04-24 | 2020-02-11 | 株式会社日立产机系统 | Biological safety cabinet and vibration isolation mechanism of fan filter unit |
| CN112460178A (en) * | 2020-11-25 | 2021-03-09 | 中国舰船研究设计中心 | Self-tuning low-power actuator, active control system and control method |
| CN112874748A (en) * | 2021-01-31 | 2021-06-01 | 李钢 | Magnetic suspension power module for magnetic suspension ship and application |
| CN112943843A (en) * | 2021-02-23 | 2021-06-11 | 常州大学 | Bionic vibration isolation system |
| CN113404811A (en) * | 2021-08-03 | 2021-09-17 | 宁波市杭州湾大桥发展有限公司 | Active vibration reduction detection element |
| CN113446352A (en) * | 2021-07-12 | 2021-09-28 | 武汉理工大学 | Vibration isolation system and flow |
| CN114658798A (en) * | 2022-02-24 | 2022-06-24 | 中船澄西船舶修造有限公司 | Frequency modulation damping device and method for mounting marine auxiliary machinery equipment |
| CN114658784A (en) * | 2022-03-22 | 2022-06-24 | 中国人民解放军国防科技大学 | Permanent magnet and electromagnetic composite active and passive vibration isolation system |
| CN114837959A (en) * | 2022-05-23 | 2022-08-02 | 山东省章丘鼓风机股份有限公司 | Vibration-damping noise-reducing slurry pump |
| CN115370698A (en) * | 2022-08-05 | 2022-11-22 | 武汉理工大学 | Self-measuring speed height-adjustable magnetic-gas hybrid vibration isolator |
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