CN104019179B - A kind of pneumatic spring-magnetic suspension hybrid isolator - Google Patents
A kind of pneumatic spring-magnetic suspension hybrid isolator Download PDFInfo
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- CN104019179B CN104019179B CN201410249489.6A CN201410249489A CN104019179B CN 104019179 B CN104019179 B CN 104019179B CN 201410249489 A CN201410249489 A CN 201410249489A CN 104019179 B CN104019179 B CN 104019179B
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Abstract
The invention discloses a kind of pneumatic spring-magnetic suspension hybrid isolator, it comprises pneumatic spring (17), magnetic suspension vibration isolator (18) and connected element (19); Described pneumatic spring (17), is provided with magnetic suspension vibration isolator (18) in the middle of utricule (7) in it; The band retainer ball (3) that described connected element (19) comprises thrust disc (4), pressing plate (5) and arranges up and down at thrust disc (4), thrust disc (4), pressing plate (5) are connected with the connecting rod (1) of magnetic suspension vibration isolator (18), the upper cover plate (8) of pneumatic spring (17) respectively.The present invention has the advantages such as working band is wide, reliability is high, compact structure, bearing capacity strong, easy to maintenance, has very large application prospect in Ship Power Equipment vibration isolation field.
Description
Technical field
What the present invention relates to is a kind of main passive hybrid isolator, and specifically a kind of passive hybrid isolator of master by pneumatic spring and magnetic suspension vibration isolator parallel operation, is mainly used in the vibration isolation of power equipment for ship or other large loading devices.
Background technique
It is one of main noise of boats and ships that marine main engine runs the construct noise excited, and its energy is transmitted 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 passive vibration isolation two kinds of forms.Passive vibration isolation adds passive device in Vibration propagation approach, to reduce to be delivered to the ocsillator strenght accepting structure, has the advantages that structure is simple, be easy to realization, reliable operation.For the passive vibration isolation of large load, bellow type air spring can be adopted, 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, the construct noise of boats and ships significantly can be reduced.But as the one of passive vibration isolation device, pneumatic spring, to low-frequency disturbance ability, even plays the effect of amplification to the undesired signal near system resonance frequencies.And active vibration isolation is by the bearing characteristics parameter of active cell (as: active vibration insulator etc.) according to the control law dynamically adjust system of setting, solve the problem of the vibration and noise reducing near low frequency and resonant frequency, but it is used alone complex structure, energy consumption is larger.The vibration isolation technique research of main passive combination is the focus of current research, compared to other active vibration insulator, magnetic suspension vibration isolator has 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 that controls with the change of controling parameters, be a kind of comparatively ideal active vibration insulator.Magnetic suspension vibration isolator be combined with pneumatic spring, the main passive hybrid isolator of composition, can give full play to the advantage of the two, avoid again shortcoming when being used alone, have better vibration isolating effect.
Chinese patent CN102748425A discloses a kind of device, it is by parallel with pneumatic spring for monolateral for one electromagnetic actuator integrated, and on coil, be provided with radiating fin realization heat radiation, the synchronous effectively control of wideband vibration and line spectrum vibration can be realized, 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 devises the superlow frequency vibration isolating device that differential electromagnetic actuator and pneumatic spring are arranged in parallel, by to the Bit andits control of differential electromagnetic actuator for system provides negative stiffness to reduce system frequency, widen superlow frequency vibration isolating scope, but level of integration is low, overall dimensions is larger, the occasion higher to spatial requirement is inapplicable, and the lateral displacement of the permission of differential type magnetic suspension actuator is little, when device is subject to little side knock, transverse vibration, actuator is easily damaged.Chinese patent CN101067432A discloses a kind of device, it is connected with pneumatic spring by magnetic suspension unit, the problem that effective solution 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, there is provided that a kind of reliability is high, compact structure, bearing capacity are large, easy to maintenance, efficiently can isolate the pneumatic spring-magnetic suspension hybrid isolator of dither and effectively control low frequency spectrum lines vibration.
Object of the present invention is realized by following technological scheme:
Pneumatic spring provided by the invention-magnetic suspension hybrid isolator, it comprises pneumatic spring, magnetic suspension vibration isolator and connected element; Described pneumatic spring, is provided with magnetic suspension vibration isolator 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 suspension vibration isolator, the upper cover plate of pneumatic spring respectively.
The circular pneumatic spring body that described pneumatic spring one of can be made up of the upper cover plate be arranged in order, lower cover plate, interior utricule and outer utricule is closed, in parallel with magnetic suspension vibration isolator integrated.
Described upper cover plate can carry out case-carbonizing or Nitrizing Treatment 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 suspension vibration isolator; Described lower cover plate has pore, and for being filled with and discharging pressurized air, or this pore is opened on upper cover plate.
Described magnetic suspension vibration isolator can be differential magnetic suspension vibration isolator, by measurement E type electromagnet wherein and the air gap of armature residual gap, carrys out the electric current of the coil on control E type electromagnet, produces electromagnetic force, offset vibration, realize vibration isolation.
Described magnetic suspension vibration isolator 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.
Described housing can have rectangular spiral groove, and as the water channel of cooling water, be delivered in cooling water by heat transfer by the heat that electromagnet produces, flow of cooling water takes heat out of vibration isolator, reduces the heat exchange between magnetic suspension vibration isolator and pneumatic spring.
Described small end can have rectangle groove, rotates in a circumferential direction for limiting it, and upper end and thrust disc are for being threaded, and lower end and armature are fixed, and rotates the adjustment that thrust disc can realize air gap between armature and E type electromagnet when limiting rod rotates.
Institute's displacement sensors can be eddy current displacement sensor, realizes the measurement of air gap between armature and E shape electromagnet by the position measuring connecting rod.
Described linear bearing can play guiding to the motion of connecting rod, prevents stuck phenomenon.
Carbon stainless steel during the retainer of described band retainer ball can adopt, ball can adopt Bearing Steel; Described thrust disc can adopt Bearing Steel, radially and between pressing plate and upper cover plate all has gap, and under pneumatic spring produces less transverse movement situation, this gap has protective action to electromagnetism vibration isolator.
The present invention compared with prior art, has following major advantage:
(1). the air spring constructions 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 excellent 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 suspension vibration isolator integrated with pneumatic spring is placed in the space beyond air chamber, the tightness of pneumatic spring can not be had influence on, and magnetic suspension vibration isolator is with sink, the compressed-air actuated temperature of plenum interior can not be had influence on, thus avoid the impact that the thermal coupling between pneumatic spring and magnetic suspension vibration isolator produces, also facilitate the installation and removal of magnetic suspension vibration isolator to keep in repair simultaneously.
(3). magnetic suspension vibration isolator is integrated into pneumatic spring inside by the present invention, have take up room little, level of integration is high, compact structure, advantage easy to use.
(4). what the present invention adopted is differential magnetic suspension vibration isolator, this vibration isolator has without the need to lubrication, the life-span is long, response is fast, the advantage that Frequency Response is good, good vibration isolating effect is had to low frequency, in equilibrium position among a small circle internal vibration time, being used as power and can making linearization process between electric current of magnetic suspension vibration isolator, control accuracy is high.
(5). magnetic suspension vibration isolator and pneumatic spring adopt parallel way integrated by the present invention, reliable support is provided to equipment by pneumatic spring, magnetic suspension vibration isolator is without the need to bearing static load, through the efficient vibration isolation of pneumatic spring, the transmission of vibrational energy obtains effective attenuation, greatly reduce magnetic suspension vibration isolator and control the power consumption of residual oscillation, connect compared with vibration isolation pattern with employing, have that reliability is high, energy consumption is low, low cost and other advantages.
(6). the present invention by pneumatic spring and magnetic suspension vibration isolator integrated, the advantage of comprehensive pneumatic spring high-frequency vibration isolation and the vibration isolation of magnetic suspension vibration isolator low frequency spectrum lines, has the advantage of good wideband vibration isolation and low frequency spectrum lines vibration isolation.
(7). the present invention adopts connected element to realize the anatomical connectivity to pneumatic spring and magnetic suspension vibration isolator, when pneumatic spring lateral stiffness deficiency, solve magnetic suspension vibration isolator and allow the shortcoming that lateral displacement is little, when being subject to little side knock or transverse vibration excitation, magnetic suspension vibration isolator can not be damaged, compared with the pneumatic spring-magnetic suspension hybrid isolator adopting differential magnetic suspension vibration isolator with other, application area is wider, can work under the working environment having little side knock, transverse vibration.
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.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is air spring constructions schematic diagram of the present invention.
Fig. 3 is magnetic suspension vibration isolator 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. be with retainer ball; 4. thrust disc; 5. pressing plate; 6. displacement transducer; 7. utricule in; 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 suspension vibration isolator; 19. connected elements; 20. water holes; 21. cable hole.
Specific embodiments
Provided by the invention a kind of by differential magnetic suspension vibration isolator and the integrated pneumatic spring-magnetic suspension hybrid isolator of air spring height, fully combine the advantage of pneumatic spring and magnetic suspension vibration isolator, realize wideband vibration isolation, there is quick response, reliability is high, compact structure, bearing capacity are large, easy to maintenance feature.
Below in conjunction with embodiment and accompanying drawing, the invention will be further described, but be not limited to described content below.
Pneumatic spring provided by the invention-magnetic suspension hybrid isolator, its structure as shown in Figures 1 to 4, comprises pneumatic spring 17, magnetic suspension vibration isolator 18 and connected element 19.Described pneumatic spring 17 by upper cover plate 8, lower cover plate 9, be arranged on utricule 7 and outer utricule 15 between upper cover plate 8 and lower cover plate 9 and form, is provided with magnetic suspension vibration isolator 18 in the middle of interior utricule 7.Described magnetic suspension vibration isolator 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 fixed on the 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, is measured the displacement of connecting rod 1 by the displacement transducer 6 fixed on the housing 10; The pressing plate 5 that described connected element 19 comprises the thrust disc 4 be connected with connecting rod 1, the band retainer ball 3 arranged at thrust disc about 4 and is fixed on upper cover plate 8.
The structure of described pneumatic spring 17 as shown in Figure 2, one that is made up of upper cover plate 8, lower cover plate 9, interior utricule 7 and outer utricule 15 closed circular pneumatic spring body, in parallel with magnetic suspension vibration isolator 18 integrated, the sealing of pneumatic spring 17 compressed air inside can not be subject to the impact of magnetic suspension vibration isolator 18, and magnetic suspension vibration isolator 18 is also easy to remove and repair.
The material of described upper cover plate 8 can adopt No. 45 steel, carries out case-carbonizing or Nitrizing Treatment 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 suspension vibration isolator 18 as shown in Figure 3, for differential magnetic suspension vibration isolator, 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, can produce magnetic circuit between upper end E type electromagnet 12 and armature 13, armature 13 is subject to electromagnetic force upwards; By lower end coil electricity, produce magnetic circuit between lower end E type electromagnet 12 and armature 13, armature 13 is subject to downward electromagnetic force, can control by the size of current controlling upper and lower end coil the size and Orientation that suffered by armature 13, electromagnetic force is made a concerted effort.When vibration source active force upwards time, air gap between armature 13 and upper end electromagnet 12 is less than and air gap between lower end electromagnet 12, increase the electric current of lower end-coil, the electric current of end-coil in reduction, 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 armature 13 be in the neutral position of two E type electromagnet 12.
Described housing 10 has rectangular spiral groove, and as the water channel of cooling water, be delivered in cooling water by heat transfer by the heat that E type electromagnet 12 produces, flow of cooling water takes heat out of vibration isolator, reduces the heat exchange between magnetic suspension vibration isolator 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 and thrust disc 4 are for being threaded, and lower end and armature 13 are fixed, and rotate the adjustment that thrust disc 4 can realize air gap between armature 13 and E type electromagnet 12 when limiting rod 1 rotates.
Institute's displacement sensors 6 is eddy current displacement sensor, fixes on the housing 10, is connected with the working state control end of magnetic suspension vibration isolator 18, can be measured be fixed on the armature 13 on connecting rod 1 and the air gap between E shape electromagnet 12 by the position measuring connecting rod 1.
Described linear bearing 2 is fixing on the housing 10, plays guiding, prevent stuck phenomenon to the motion of connecting rod 1.
Described thrust disc 4 adopts Bearing Steel; radially and between pressing plate 5 and upper cover plate 8, all have the gap of 5mm; under producing at pneumatic spring 17 the transverse movement situation being less than 5mm, the transverse movement of upper cover plate 8 can not be delivered on connecting rod 1, has certain protective action to electromagnetism vibration isolator 18.
Carbon stainless steel in the retainer employing of described band retainer ball 3, 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 by the transmission of device for vibration insutation dither to pedestal, magnetic suspension vibration isolator 18 carries by the dynamic load of device for vibration insutation in vibration processes, by the transmission of connected element 19 realizable force between pneumatic spring 17 and magnetic suspension vibration isolator 18.Connected element 19 as shown in Figure 4, when upper cover plate 8 be subject to vibration move downward time, disturbing force successively by pressing plate 5, 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 be subject to vibration move upward time, disturbing force successively by 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 is delivered to upper cover plate 8.
In the present invention, magnetic suspension vibration isolator is contactless, and the advantage of high energy efficiency is the basis being 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, and the upper cover plate 8 of pneumatic spring-magnetic suspension hybrid isolator is connected with by device for vibration insutation, and lower cover plate 9 is connected with pedestal.Pneumatic spring 17 and magnetic suspension vibration isolator 18 are installed in parallel, and during 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, armature 13 is delivered to via band retainer ball 3, thrust disc 4, connecting rod 1, make armature 13 depart from neutral position to move upward, control coil 14 size of current, upper end coil current is reduced, lower end coil current strengthens, armature 13 is subject to downward electromagnetic force, acts on upper cover plate 8, offset device for vibration insutation vibration by connecting rod 1, thrust disc 4, band retainer ball 3.If device for vibration insutation produces downward disturbing force and acts on upper cover plate 8, armature 13 is delivered to via pressing plate 5, band retainer ball 3, thrust disc 4, connecting rod 1, make armature 13 depart from neutral position to move 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 process: the degrees of freedom that rotated in a circumferential direction by connecting rod 1 limits, and rotary thrust dish 4 makes armature 13 contact with lower end E type electromagnet 12, and measuring connecting rod 1 now displacement by displacement transducer 6 is x
1, then counterrotating thrust disc 4, armature 13 is contacted with upper end E type electromagnet 12, and 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 positions, E type electromagnet 12 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 suspension vibration isolator 18: thrust disc 4 and radially all have the spacing of 5mm between pressing plate 5 and upper cover plate 8.When upper cover plate 8 is subject to the horizontal disturbance being less than 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; thus avoid connecting rod 1 to be subject to radial forces, cross-protection is carried out to magnetic suspension vibration isolator 18.
Present invention employs hybrid vibration isolation pattern in parallel, magnetic suspension vibration isolator 18 is integrated in pneumatic spring 17, can compact structure be made.The present invention is by pneumatic spring 17 support apparatus load, magnetic suspension vibration isolator 18 is without the need to providing static supporting force, than the series connection vibration isolation pattern that other types vibration isolator adopts, there is less power consumption and the reliability of Geng Gao, magnetic suspension vibration isolator 18 is as active vibration isolation part, and carrying dynamic load, has contactless characteristic, unlubricated characteristic, there is excellent low frequency vibration isolation effect, and required active controlling force is lower.
The present invention uses operation as follows: be installed to by between device for vibration insutation and pedestal by pneumatic spring-magnetic suspension hybrid isolator, first pressurized air is filled with to pneumatic spring 17, pneumatic spring 17 is made to reach design height, then armature 13 is adjusted to two E type electromagnet 12 neutral positions, equal-sized initial current is loaded to coil 14, the original state adjustment of pneumatic spring-magnetic suspension hybrid isolator is 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, improvement, equivalent replacement etc., all should be included within protection scope of the present invention.
Claims (10)
1. pneumatic spring-magnetic suspension hybrid isolator, comprise pneumatic spring (17), magnetic suspension vibration isolator (18), magnetic suspension vibration isolator (18) is provided with in the middle of the interior utricule (7) of described pneumatic spring (17), it is characterized in that: be provided with connected element (19), the band retainer ball (3) that this connected element (19) comprises thrust disc (4), pressing plate (5) and arranges up and down at thrust disc (4), thrust disc (4), pressing plate (5) are connected with the connecting rod (1) of magnetic suspension vibration isolator (18), the upper cover plate (8) of pneumatic spring (17) respectively.
2. pneumatic spring according to claim 1-magnetic suspension hybrid isolator, it is characterized in that: the circular pneumatic spring body that described pneumatic spring (17) of being made up of the upper cover plate be arranged in order (8), lower cover plate (9), interior utricule (7) and outer utricule (15) is closed, in parallel integrated with magnetic suspension vibration isolator (18).
3. pneumatic spring according to claim 2-magnetic suspension hybrid isolator, it is characterized in that: described upper cover plate (8) carries out case-carbonizing or Nitrizing Treatment 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 suspension vibration isolator (18); Described lower cover plate (9) has pore (16), for being filled with and discharging pressurized air, or this pore (16) is opened on upper cover plate (8).
4. pneumatic spring according to claim 1-magnetic suspension hybrid isolator, it is characterized in that: described magnetic suspension vibration isolator (18) is differential magnetic suspension vibration isolator, by measuring the air gap between E type electromagnet (12) wherein and armature (13), carry out the electric current of the coil (14) in control E type electromagnet (12), produce electromagnetic force, offset vibration, realize vibration isolation.
5. pneumatic spring according to claim 4-magnetic suspension hybrid isolator, is characterized in that: described magnetic suspension vibration isolator (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 according to claim 5-magnetic suspension hybrid isolator, it is characterized in that: (10) have rectangular spiral groove to described housing, as the water channel of cooling water, by heat transfer, the heat that electromagnet produces is delivered in cooling water, flow of cooling water takes heat out of vibration isolator, reduces the heat exchange between magnetic suspension vibration isolator (18) and pneumatic spring (17).
7. pneumatic spring according to claim 5-magnetic suspension hybrid isolator, it is characterized in that: described connecting rod (1) upper end has rectangle groove, rotate in a circumferential direction for limiting it, upper end and thrust disc (4) are for being threaded, lower end and armature (13) are fixed, and rotate the adjustment that thrust disc (4) can realize air gap between armature (13) and E type electromagnet (12) when limiting rod (1) rotates.
8. pneumatic spring according to claim 5-magnetic suspension hybrid isolator, it is characterized in that: institute's displacement sensors (6) is eddy current displacement sensor, realize the measurement of air gap between armature (13) and E shape electromagnet (12) by the position measuring connecting rod (1).
9. pneumatic spring according to claim 5-magnetic suspension hybrid isolator, is characterized in that: the motion of described linear bearing (2) to connecting rod (1) plays guiding, prevents stuck phenomenon.
10. pneumatic spring according to claim 1-magnetic suspension hybrid isolator, is characterized in that: carbon stainless steel in the retainer employing of described band retainer ball (3), and ball adopts Bearing Steel; Described thrust disc (4) adopts Bearing Steel, radially and between pressing plate (5) and upper cover plate (8) all has gap, and under pneumatic spring (17) produces less transverse movement situation, 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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| CN106641087B (en) * | 2015-11-04 | 2018-10-19 | 株洲时代新材料科技股份有限公司 | A kind of electromagnetic type active vibration absorber |
| JP6993926B2 (en) * | 2018-04-24 | 2022-01-14 | 株式会社日立産機システム | Anti-vibration mechanism of safety cabinet and fan filter unit |
| CN109681572B (en) * | 2018-11-30 | 2020-06-30 | 上海交通大学 | Active and passive vibration isolator and power equipment |
| CN112460178B (en) * | 2020-11-25 | 2024-03-22 | 中国舰船研究设计中心 | Self-tuning low-power actuator, active control system and control method |
| CN112874748B (en) * | 2021-01-31 | 2023-03-28 | 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 |
| CN113446352A (en) * | 2021-07-12 | 2021-09-28 | 武汉理工大学 | Vibration isolation system and flow |
| CN113404811B (en) * | 2021-08-03 | 2022-07-12 | 宁波市杭州湾大桥发展有限公司 | Active vibration reduction detection element |
| CN114658798B (en) * | 2022-02-24 | 2023-12-26 | 中船澄西船舶修造有限公司 | Frequency modulation damping device and damping method for installation of marine auxiliary 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 |
| CN114837959B (en) * | 2022-05-23 | 2024-04-02 | 山东省章丘鼓风机股份有限公司 | Vibration-damping noise-reducing slurry pump |
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| CN102401071A (en) * | 2011-06-21 | 2012-04-04 | 贺劼 | Air spring with static stiffness adjusted according to volume and dynamic stiffness adjusted along with displacement |
| CN102748425A (en) * | 2012-06-15 | 2012-10-24 | 中国人民解放军海军工程大学 | Driving-driven hybrid vibration isolator |
| CN203202104U (en) * | 2013-03-15 | 2013-09-18 | 许佳 | Magnetic-control air spring self-adaptive to suspension heights |
| CN103216562A (en) * | 2013-03-27 | 2013-07-24 | 上海萃智科技发展有限公司 | Air spring shock mitigation system capable of recycling energy |
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| CN104019179A (en) | 2014-09-03 |
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