CN107939901A - A kind of magnetic rheology elastic body semi-active type dynamic vibration absorber and type selecting installation method - Google Patents

A kind of magnetic rheology elastic body semi-active type dynamic vibration absorber and type selecting installation method Download PDF

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CN107939901A
CN107939901A CN201711133363.2A CN201711133363A CN107939901A CN 107939901 A CN107939901 A CN 107939901A CN 201711133363 A CN201711133363 A CN 201711133363A CN 107939901 A CN107939901 A CN 107939901A
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msub
oscillator
elastic body
magnetic
hole
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CN107939901B (en
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文永蓬
周伟浩
孙倩
郭林生
宗志祥
邹钰
祁慧
纪忠辉
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Shanghai University of Engineering Science
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/002—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion characterised by the control method or circuitry
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
    • F16F2228/06—Stiffness
    • F16F2228/066—Variable stiffness

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  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

A kind of magnetic rheology elastic body semi-active type dynamic vibration absorber and type selecting installation method, the cruciform member of the upper and lower configured in parallel of multilayer are fixed on below the chassis pedestal of rail vehicle bottom by the vertical magnetic conductive pole suspension of four verticals through four ends of " ten " word beam arm；Spaced multiple-layer stacked structure is formed between multilayer grooved oscillator and cruciform member, cruciform member center opens up vertical installation through-hole, the magnetic rheology elastic body of annular is equipped between the connecting shaft of installation through-hole and multilayer grooved oscillator, multilayer grooved oscillator can be along the axially opposing chassis pedestal up-down vibration of installation through-hole；Winding slot is opened up on the beam arm of cruciform member, magnet exciting coil is wound in winding slot；The shock attenuation result of the present apparatus is good, and energy consumption is few, and simple structure is compact, it is easily installed, security reliability is high, and to remaining space under rail vehicle using rationally, the wideband vibration damping on vertical can be carried out to the vehicle body of railway vehicle that abnormal vibrations problem is produced due to track irregularity.

Description

A kind of magnetic rheology elastic body semi-active type dynamic vibration absorber and type selecting installation method
Technical field
Railway vehicle vibration damping absorbing field of the present invention, more particularly to a kind of magnetic rheology elastic body semi-active type dynamic vibration absorber And its type selecting installation method.
Background technology
When rail vehicle is run, the Wheel Rail Vibration that track irregularity produces is transferred to car by a system and secondary suspension system Body, while reducing vehicle riding quality, also has some impact on passenger's ride quality.Dynamic vibration absorber is due to knot The advantages of structure is simple, good damping result, it has also become reduce one of body oscillating, the effective means for improving passenger's ride quality.
Dynamic vibration absorber is generally divided into passive type, active and three kinds of semi-active type：Passive type bump leveller is simple in structure, ginseng Number is unadjustable, and the excited frequency that may only be directed to single fixation plays good damping effect, therefore is not suitable for frequency Change greatly, that is, vibrate the wider occasion of frequency band；Active bump leveller vibration damping bandwidth, its operation principle are to utilize extra power Make bump leveller target vibration damping thing vibrate it is instantaneous apply controling power, vibrated with rapid decay, but it is with complicated, control The shortcomings of required precision is high, energy consumption is big, stability is poor；Semi-active type bump leveller changes bump leveller by relatively low energy consumption dynamic The parameters such as rigidity, so that effectively absorbing frequency and the dynamic excitation frequency of target vibration damping thing meets rapport all the time, not only Widened the vibration damping frequency band of bump leveller, and shock attenuation result is close to active shock attenuation result, also, with active bump leveller phase Than having the characteristics that required control energy is small, being easily achieved.The Parameters variation of semi active vibration absorber can pass through mechanical structure Change or intellectual material realize, magnetic rheology elastic body is a Ge Xin branches of intellectual material, when magnetic rheology elastic body is subject to magnetic During field action, interaction force is produced after the ferromagnetic particle magnetization in elastomer, makes its modulus of shearing can be according to magnetic field intensity Change and change, so as to achieve the purpose that dynamic regulation bump leveller rigidity.
Current most of dynamic vibration absorbers belong to passive type, in the application for a patent for invention of Application No. 201510078101.5 A kind of mass bumper is disclosed, for wherein mass inertia block as bump leveller oscillator, absorber rubber body plays spring damping connection Effect, and play the buffering stop block to bump leveller equipped with limit hole and yielding rubber, the bump leveller is simple in structure, reliable Property it is high, but absorbing frequency is single, can not effectively solve the problems, such as vehicle body of railway vehicle vertical vibration, because rail vehicle is transported During row, suffered exciting frequency range is wide, and wherein city rail vehicle handling capacity of passengers, velocity variations are frequent, has more widened body oscillating frequency range.
Belong to that the dynamic vibration absorber patent of semi-active type is also more, the patent of invention Shen of Application No. 201510155428.8 Please in disclose a kind of multiple degrees of freedom dynamic vibration absorber, can by the distance between threaded adjusting mass block and mass block, from And change the intrinsic frequency of bump leveller, it is carry out multi-degree of freedom vibration reduction to main shake, but the method for threaded adjusting belongs to half actively Mechanical frequency modulation in oscillation damping method, frequency change are slow, it is difficult to meet handling capacity of passengers, speed, track irregularity driving frequency change frequency Numerous city rail vehicle；A kind of magnetic rheology elastic body shift frequency is disclosed in the application for a patent for invention of Application No. 200510094882.3 Formula bump leveller and installation method, can change the rigidity of magnetic rheology elastic body by regulating winding voltage, so that bump leveller Vibration frequency changes, and plays the role of wideband vibration damping, due to oscillator in the device and additional component (iron core, sleeve, coil Deng) between use up-down structure, it is contemplated that rail vehicle weight is big, for ensure effectiveness in vibration suppression, the matter of the oscillator of bump leveller Amount is also big, but when oscillator quality becomes larger, because rail vehicle down space is limited, and is subject to bump leveller up-down structure Constraint, cause bump leveller highly to become larger, lack to be laid out under car it is rational at the same time, it is safe for operation to have an effect on city rail vehicle Property.
The content of the invention
The technical problems to be solved by the invention are that the magnetic rheology elastic body semi-active type for providing a kind of rail vehicle moves Power bump leveller and type selecting installation method, shock attenuation result is good, and energy consumption is few, and it is narrow to overcome passive type dynamic vibration absorber vibration damping frequency band, The wideband vibration damping on vertical can be carried out to the vehicle body of railway vehicle that abnormal vibrations problem is produced due to track irregularity；Overcome The shortcomings that active power bump leveller is complicated, manufacture is of high cost, energy consumption is big, simple structure is compact, is easily installed, and safely may be used It is high by property, to remaining space under rail vehicle using rationally, beneficial to rail vehicle bottom is arranged in, do not interfere with city rail vehicle The security of operation.
The present invention is achieved by the following technical solutions：
A kind of magnetic rheology elastic body semi-active type dynamic vibration absorber, it is characterised in that：The cross of configured in parallel above and below multilayer Shape crossbeam is fixed on positioned at track by the vertical magnetic conductive pole suspension of four verticals through four ends of " ten " word beam arm Below the chassis pedestal of vehicle bottom；
Multilayer grooved oscillator includes the oscillator being parallel to each other above and below multilayer and connects positioned at oscillator center, by multilayer oscillator The connecting shaft being fixed as one is connect, every layer of oscillator is respectively positioned between adjacent two layers cruciform member, multilayer grooved oscillator and cross Spaced multiple-layer stacked structure is formed between shape crossbeam, multilayer grooved oscillator is hung or supported and is installed on by load bearing spring On cruciform member, depart from independently of each other between multilayer grooved oscillator and vertical magnetic conductive pole；
Cruciform member center opens up vertical installation through-hole, and the peace of the cruciform member of the superiors is stretched into connecting shaft upper end Fill in through hole, lower end is stretched into the installation through-hole of undermost cruciform member, peace of the stage casing from the cruciform member in intermediate layer Passed through in dress through hole, the magnetic rheology elastic body of annular is equipped between installation through-hole and connecting shaft, magnetic rheology elastic body outer ring is close to It is fixed on installation through-hole, inner ring cladding connecting shaft outer rim, multilayer grooved oscillator can be along the axially opposing chassis base of installation through-hole Seat up-down vibration；
On four beam arms of every layer of cruciform member, winding slot is opened up respectively from installation through-hole towards beam arm end, around Winding magnet exciting coil in wire casing；On individual layer cruciform member, power supply of opposite two magnet exciting coils close to installation through-hole one end For positive and negative anodes on the contrary, on adjacent two layers cruciform member, the power positive cathode of upper and lower two magnet exciting coils of correspondence position is opposite；
The connecting shaft of multilayer grooved oscillator is or its exterior covering magnetic separator layer every magnet；It is cruciform member, vertical Magnetic conductive pole is magnetizer；The bump leveller and the interval magnetic of rail vehicle bottom；
Two circles are formed between adjacent two layers cruciform member from magnet exciting coil, cruciform member, vertical magnetic conductive pole, cross Crossbeam, magnet exciting coil, magnetic rheology elastic body, magnet exciting coil, cruciform member, vertical magnetic conductive pole, cruciform member, excitation wire Circle, magnetic rheology elastic body return the right-angled intersection closed magnetic circuit of magnet exciting coil；
When rail vehicle produces vertical vibration in the process of running, the vibration of car body by chassis pedestal, vertical magnetic conductive pole, Cruciform member and magnetic rheology elastic body are transferred to multilayer grooved oscillator；
Installation vibrating sensor on the rail vehicle monitor in real time car body vibration frequency (i.e. track irregularity when to vehicle Vibrational excitation frequency) and feed back to control unit, control unit changes strong by the electric current of magnet exciting coil according to feedback signal Degree, so as to adjust the rigidity of magnetic rheology elastic body, makes the intrinsic frequency and vehicle body of railway vehicle vibration frequency moment phase of bump leveller Tuning, it is ensured that the body oscillating energy under each frequency can be absorbed by the multilayer grooved oscillator of bump leveller, suppressed car body and hung down To vibration, the wideband vibration damping to car body is realized.
Further, the vertical magnetic conductive pole, coats magnetic separator layer outside cruciform member and magnet exciting coil, described Magnet exciting coil is enameled wire loop, completely cuts off function so as to fulfill the magnetic circuit between bump leveller and rail vehicle bottom, limits the magnetic line of force Flow direction.
Further, four excitations of nested copper band between the magnetic rheology elastic body and installation through-hole, copper band and surrounding Coil is electrically connected close to installation through-hole one end；Magnetic rheology elastic body and the inside and outside suit stickup of copper band are fixed as one, copper band outer ring It is close to be fixed on installation through-hole, magnetic rheology elastic body inner ring pastes connecting shaft outer rim；When multilayer grooved oscillator vibration, even The dragging of spindle makes magnetic rheology elastic body elastic deformation, oscillator is had the leeway of up-down vibration.Copper band directly and magnet exciting coil And magnetic rheology elastic body electrical contact, three be electric conductor, electric field magnetisation field, and copper band has uniform electric field and reinforcing magnetic here The effect of field, although copper band is not magnetizer, since copper band itself is powered, electric field produces magnetic field, therefore can't separate Magnetic circuit between magnet exciting coil and magnetic rheology elastic body, in addition, it is contemplated that magnet exciting coil is not more than by electric current maximum 2A, similar mobile phone charging wire electric current, therefore bump leveller does not have the hidden danger of secure context with micro-current.
Further, the magnetic rheology elastic body is highly less than the height of copper band, magnetic rheology elastic body can be made to wrap completely It is rolled in the magnetic field of magnet exciting coil generation, improves the functional reliability of magnetic rheology elastic body, ensures that magnetic circuit is unobstructed.
Further, the winding slot is two parallel lines being radially opened in along installation through-hole on cruciform member beam arm Groove, using the side face of installation through-hole as starting point, magnet exciting coil is wrapped in winding slot winding slot, and winding structure is compact, makes excitation wire Circle is not exposed to outside cruciform member, and is easy to the electrical connection between copper band.
Further, adopted between the vertical magnetic conductive pole and cruciform member, between vertical magnetic conductive pole and chassis pedestal Fixation is threadedly coupled, multi-segment thread section, four ends of cruciform member beam arm and chassis pedestal are carried on vertical magnetic conductive pole Correspondence position on open up threaded hole, assembling easy to process respectively.
Further, the top side of the chassis pedestal fitting rail vehicle bottom opens up the mounting groove of opening upwards, installation Four corners are respectively provided with a threaded hole in groove, and screw thread reinforced hole is opened up respectively on the corner of each threaded hole；On vertical magnetic conductive pole End is in the ladder shaft-like of small end upward, and step surface is close on small end and screws reinforcing nut, bolt is reinforced for four and is upward through reinforcing Nut, is tightened in screw thread reinforced hole；It is close to cruciform member on vertical magnetic conductive pole and screws reinforcing nut, plays reinforcement effect, Ensure the safety and reliability of bump leveller long-time service.
Further, the oscillator of the multilayer grooved oscillator is box-shaped, and four sides open up escape groove, and vertical magnetic conductive pole is from keeping away Allow groove to pass through, do not contacted with escape groove vallecular cavity, it is compact-sized, rationally distributed, can maximize oscillator quality.
Further, the cruciform member quantity is three layers, and four vertical magnetic conductive poles and three layers of cruciform member are formed The outer framework of dynamic vibration absorber；The multilayer grooved oscillator is the Dual-layer slotting oscillator in " string " font；Three sections of connecting shafts and three A annular magnetic rheology elastic body coordinates, and forms the elastic connection between outer framework, this kind of configuration mode is compact-sized, effectively profit With limited underbody space, and it is suitable for current rail vehicle.
Further, chassis pedestal, multilayer grooved oscillator and cruciform member beam arm use the round and smooth processing in corner, prevent The safety problem brought since corner is sharp keen.
A kind of method that type selecting sets up the magnetic rheology elastic body semi-active type dynamic vibration absorber stated：
The first step, each theoretical parameter according to the theoretical definite bump leveller of dynamic vibration absorber：Bump leveller is reduced to two freely Model is spent, if Mj、Kj、CjAnd ZjShake based on respectively the quality for being, rigidity, damping and up-down vibration displacement, Md、Kd、CdAnd ZdRespectively For the quality of bump leveller, rigidity, damping and up-down vibration displacement；Assuming that main shake is to be subject to harmonic excitation Fsin ω t, according to newton Second theorem, then the kinetics equation of the coupled system be：
Bump leveller differential equation of motion：
The following need to be introduced by carrying out research to dynamic vibration absorber：
Dynamic vibration absorber and main shake are mass ratio：
The main inherent circular frequency for being that shakes：Known ωj=2 π fj, fjBased on shake the intrinsic time frequency for being；
The inherent circular frequency of dynamic vibration absorber vibration：Known ωd=2 π fd, fdFor the proper time of bump leveller Between frequency；
The damping ratio of dynamic vibration absorber：
Bump leveller and the main vibration ratio for being that shakes：
In two degrees of freedom model of vibration, when dynamic vibration absorber meets certain condition, bump leveller could at utmost be inhaled The main vibrational energy for being that shakes is received, bump leveller has preferable effectiveness in vibration suppression, and actual conditions is as follows：
Optimal people having the same aspiration and interest condition：
Optimal damper condition：
The then intrinsic frequency f of bump levellerdIt should be designed as：
It can thus be appreciated that the rigidity Design value K of bump levellerdFor：
The damping C of bump leveller according to the damping ratio formula of bump levellerdFor：
Cd=4 π Mdfdζ
Solve the solution value of above-mentioned formula according to auto model, solution value further according to above-mentioned formula and corresponding magnetorheological The correlation properties of elastomer are solved, and choose elastic damping member of the magnetic rheology elastic body for meeting and calculating and requiring as bump leveller Part, determines the mass elements of the quality size and the number of plies of multilayer grooved oscillator as bump leveller, and according to multilayer grooved oscillator Quality size chooses the suitable load bearing spring balance vibrators gravity of rigidity；
Second step, install magnetic rheology elastic body, magnetorheological bullet between the connecting shaft of multilayer grooved oscillator and installation through-hole Property body in circle envelope connecting shaft outer rim, outer ring is close to be fixed on installation through-hole, if magnetic rheology elastic body outer ring install additional copper Circle, then magnetic rheology elastic body and the inside and outside suit stickup of copper band are fixed as one, and copper band outer ring is close to be fixed on installation through-hole, magnetic Magnetorheological elastomer inner ring envelopes connecting shaft outer rim；
3rd step, in the outside of multilayer grooved oscillator install vertical magnetic conductive pole, cruciform member additional, makes vertical magnetic conductive pole and ten Cross-beam of character form connection is fixed as one, and magnet exciting coil is wound in the winding slot of cruciform member；
4th step, the component for assembling the 3rd step are integrally carried out every magnetic treatment, then are installed on chassis pedestal, alternatively, By in the component integral installation that the 3rd step assembles to chassis pedestal, then bump leveller is integrally carried out every magnetic treatment；
5th step, by the multiple intervals of bump leveller be installed on rail vehicle bottom, or is individually attached to rail vehicle bottom.
The beneficial effects of the present invention are：
1st, vibration damping bandwidth, shock attenuation result is good, can consolidating by varying the stiffness tuning bump leveller of magnetic rheology elastic body There is frequency, the vibration frequency of real-time tracking vibration damping object simultaneously tunes therewith, consistently achieves significant effectiveness in vibration suppression；
2nd, energy consumption is few, need to only provide the exciting current of very little, the job requirement with regard to that can meet bump leveller；
3rd, chassis pedestal is added, makes being installed on chassis pedestal for bump leveller, can be to avoid will inhale while easy disassembly The device that shakes is directly installed on vehicle bottom, causes the structure destruction to vehicle bottom；
4th, cruciform member is used for the winding of magnet exciting coil using beam arm notching construction, avoids coil from being directly wound in beam arm On, it is convenient that magnetic separator is wrapped up to bump leveller outer framework while magnetic field utilization rate can be effectively improved, reinforced and tied using center Structure, improves the use reliability of cruciform member；
5th, vertical magnetic conductive pole and cruciform member had both constituted the outer framework of bump leveller, avoided oscillator because coming off to railcar Safety risks brought, or the magnetic conductive loop of bump leveller are high to the parts utilization rate of bump leveller；
6th, using multilayer beam structure, the reliability of bump leveller when can improve oscillator vibration, while can ensure that bump leveller Magnetic circuit closed condition is good, improves the effectiveness in vibration suppression of bump leveller；
7th, oscillator uses square notching construction, makes vertical magnetic conductive pole is discontiguous to be enclosed in escape groove, space-saving Meanwhile maximize oscillator quality；
8th, magnetic rheology elastic body need to be slightly less than the design of copper band height using height, magnetic rheology elastic body can be made to wrap completely It is rolled in the magnetic field of magnet exciting coil generation, improves the functional reliability of magnetic rheology elastic body, ensures that magnetic circuit is unobstructed；
9th, apparatus structure simple and compact, is adapted to be arranged installation in vehicle body of railway vehicle, modularization easy to implement can root Factually border Vibration Condition, is installed in parallel multiple bump levellers and is combined use, will not cause the interference with other equipment under car.
In conclusion the shock attenuation result of the present apparatus is good, energy consumption is few, overcomes passive type dynamic vibration absorber vibration damping frequency band mistake It is narrow, the wideband vibration damping on vertical can be carried out to the vehicle body of railway vehicle that abnormal vibrations problem is produced due to track irregularity；Gram The shortcomings that active power bump leveller is complicated, manufacture is of high cost, energy consumption is big is taken, simple structure is compact, is easily installed, peace Full reliability is high, to remaining space under rail vehicle using rationally, beneficial to rail vehicle bottom is arranged in, does not interfere with urban rail The security of vehicle operation.
Brief description of the drawings
Fig. 1 is a kind of schematic perspective view of preferred structure of the present apparatus
Fig. 2 faces magnetic circuit schematic diagram for Fig. 1's
Fig. 3 is the schematic perspective view of cruciform member in Fig. 1
Fig. 4 is multilayer grooved oscillator figure in Fig. 1
Fig. 5 is the schematic view of the mounting position of the present apparatus on the rail vehicle
Fig. 6 is the Vertical Acceleration collection of illustrative plates of vehicle body of railway vehicle when installing different vibration absorbing structures
Fig. 7 is the magnetic induction line distribution map of bump leveller in Fig. 2
Fig. 8 is the Magnetic Induction Density Distribution figure of bump leveller in Fig. 2
Fig. 9 is the two-freedom model figure of bump leveller
In Fig. 1~8：1 is chassis pedestal, and 2 be vertical magnetic conductive pole, and 3 be cruciform member, and 301 be installation through-hole, and 302 are Winding slot, 4 be magnet exciting coil, and 5 be copper band, and 6 be magnetic rheology elastic body, and 7 be multilayer grooved oscillator, and 701 be connecting shaft, and 702 are Escape groove, 8 be load bearing spring, and 9 is reinforce nut, and 10 be reinforcing bolt.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Fig. 1~2, the cruciform member 3 of about three layers configured in parallel passes through through four ends of " ten " word beam arm The vertical magnetic conductive poles 2 of four verticals suspend and be fixed on positioned at the lower section of chassis pedestal 1 of rail vehicle bottom, form power The outer framework of bump leveller；
As shown in Fig. 4, Fig. 2, multilayer grooved oscillator 7 is in " string " font, including the oscillator being parallel to each other for about two layers and position In oscillator center, the connecting shaft 701 that two layers of oscillator connection is fixed as one, every layer of oscillator is box-shaped, positioned at phase Between adjacent two layers of cruciform member 3, five spaced stackings plus knot are formed between multilayer grooved oscillator 7 and cruciform member 3 Multilayer grooved oscillator 7 is hung or supported on cruciform member 3 by structure, load bearing spring 8；Every layer of oscillator is box-shaped Four sides open up escape groove 702, and vertical magnetic conductive pole 2 is passed through from escape groove 702, is not contacted with 702 vallecular cavity of escape groove, is opened multilayer Depart from independently of each other between groove oscillator 7 and vertical magnetic conductive pole 2.
As shown in Figure 2 and Figure 3,3 center of cruciform member opens up vertical installation through-hole 301, and 701 upper end of connecting shaft is stretched into In the installation through-hole 301 of the cruciform member 3 of the superiors, the installation through-hole 301 of undermost cruciform member 3 is stretched into lower end Interior, stage casing is passed through out of the cruciform member 3 in intermediate layer installation through-hole 301, interior between installation through-hole 301 and connecting shaft 701 The outer copper band 5 and magnetic rheology elastic body 6 for being arranged annular, 6 height of magnetic rheology elastic body are less than the height of copper band 5, magnetorheological elasticity Body 6 and the inside and outside suit stickup of copper band 5 are fixed as one, and 5 outer ring of copper band is close to be fixed on installation through-hole 301, magnetorheological elasticity 6 inner ring of body pastes 701 outer rim of connecting shaft；When multilayer grooved oscillator 7 vibrates, the dragging of connecting shaft 701 makes magnetorheological elasticity 6 elastic deformation of body, makes oscillator have the leeway of up-down vibration；Three sections of connecting shafts 701 and three annular magnetic rheology elastic bodies 6 are matched somebody with somebody Close, form the elastic connection between outer framework, enable multilayer grooved oscillator 7 along the axially opposing chassis base of installation through-hole 301 1 up-down vibration of seat.
As shown in figure 3, on four beam arms of each cruciform member 3, from 301 outer rim of installation through-hole towards beam arm end Winding slot 302 is opened up respectively, and winding slot 302 is that two be opened in along 301 radial direction of installation through-hole on 3 beam arm of cruciform member are flat Wiring trough, winding slot 302 is using the side face of installation through-hole 301 as starting point；Winding magnet exciting coil 4 in winding slot 302；As shown in Figure 2 With on layer cruciform member 3, opposite two magnet exciting coils 4 close to 301 one end of installation through-hole power positive cathode on the contrary, adjacent On two layers of cruciform member 3, the power positive cathode of upper and lower two magnet exciting coils 4 of correspondence position is opposite；Copper band 5 and surrounding Four magnet exciting coils 4 are electrically connected close to 301 one end of installation through-hole.
Between vertical magnetic conductive pole 2 and cruciform member 3, threaded connection is used between vertical magnetic conductive pole 2 and chassis pedestal 1 It is fixed, carry multi-segment thread section, four ends of 3 beam arm of cruciform member and the correspondence position of chassis pedestal 1 on vertical magnetic conductive pole 2 Put and open up threaded hole respectively；As shown in Fig. 1~2, the top side that chassis pedestal 1 is bonded rail vehicle bottom opens up opening upwards Mounting groove, four corners are respectively provided with a threaded hole in mounting groove, and screw thread reinforced hole is opened up respectively on the corner of each threaded hole；Hang down It is in the ladder shaft-like of small end upward to 2 upper end of magnetic conductive pole, step surface is close on small end and screws reinforcing nut 9, four reinforcing bolts 10 are upward through reinforcing nut 9, are tightened in screw thread reinforced hole；It is close to cruciform member 3 on vertical magnetic conductive pole 2 and screws reinforcing spiral shell Mother 9.
Chassis pedestal 1, multilayer grooved oscillator 7 and 3 beam arm of cruciform member use the round and smooth processing in corner.
The connecting shaft 701 of multilayer grooved oscillator 7 is or its exterior covering magnetic separator layer every magnet；Cruciform member 3rd, vertical magnetic conductive pole 2 is magnetizer；Magnetic separator layer is coated outside vertical magnetic conductive pole 2, cruciform member 3 and magnet exciting coil 4, Magnet exciting coil 4 is enameled wire loop, ensures bump leveller and the interval magnetic of rail vehicle bottom.
Two circles are formed between adjacent two layers cruciform member 3 from magnet exciting coil 4, cruciform member 3, vertical magnetic conductive pole 2, ten Cross-beam of character form 3, magnet exciting coil 4, magnetic rheology elastic body 6, magnet exciting coil 4, cruciform member 3, vertical magnetic conductive pole 2, cross are horizontal Beam 3, magnet exciting coil 4, magnetic rheology elastic body 6 return the right-angled intersection closed magnetic circuit of magnet exciting coil 4, as shown in Figure 2.
When being used to solve the problems, such as vehicle body of railway vehicle vertical vibration using the dynamic vibration absorber, type selecting is pacified according to the following steps Dress：
The first step, each theoretical parameter according to the theoretical definite bump leveller of dynamic vibration absorber：Bump leveller is reduced to two freely Model is spent, as shown in figure 9, setting Mj、Kj、CjAnd ZjShake based on respectively the quality for being, rigidity, damping and up-down vibration displacement, Md、 Kd、CdAnd ZdThe respectively quality of bump leveller, rigidity, damping and up-down vibration displacement；Assuming that main shake is to be subject to harmonic excitation F Sin ω t, according to newton second theorem, then the kinetics equation of the coupled system is：
Bump leveller differential equation of motion：
The following need to be introduced by carrying out research to dynamic vibration absorber：
Dynamic vibration absorber and main shake are mass ratio：
The main inherent circular frequency for being that shakes：Known ωj=2 π fj, fjBased on shake the intrinsic time frequency for being；
The inherent circular frequency of dynamic vibration absorber vibration：Known ωd=2 π fd, fdFor the proper time of bump leveller Between frequency；
The damping ratio of dynamic vibration absorber：
Bump leveller and the main vibration ratio for being that shakes：
In two degrees of freedom model of vibration, when dynamic vibration absorber meets certain condition, bump leveller could at utmost be inhaled The main vibrational energy for being that shakes is received, bump leveller has preferable effectiveness in vibration suppression, and actual conditions is as follows：
Optimal people having the same aspiration and interest condition：
Optimal damper condition：
The then intrinsic frequency f of bump levellerdIt should be designed as：
It can thus be appreciated that the rigidity Design value K of bump levellerdFor：
The damping C of bump leveller according to the damping ratio formula of bump levellerdFor：
Cd=4 π Mdfdζ
Solve the solution value of above-mentioned formula according to auto model, solution value further according to above-mentioned formula and corresponding magnetorheological The correlation properties of elastomer are solved, and choose elastic damping of the magnetic rheology elastic body 6 for meeting and calculating and requiring as bump leveller Element, determines the mass elements of the quality size and the number of plies of multilayer grooved oscillator 7 as bump leveller, and according to multilayer grooved oscillator 7 quality size chooses the suitable 8 balance vibrators gravity of load bearing spring of rigidity；In the embodiment, the outer framework of dynamic vibration absorber The cube length of side is 0.5m, i.e., the height of vertical magnetic conductive pole 2 is 0.5m, and the length of cruciform member 3 is 0.5m, magnetorheological elasticity The internal diameter of body 6 is 0.02m, and outside diameter 0.04m, the height of three sections of magnetic rheology elastic bodies of upper, middle and lower is all 0.03m, alternatively, considering It is that a kind of characteristic, in specific type selecting, can be by varying the intellectual material that collocation method is modified to magnetic rheology elastic body Make symmetrical configuration and easy to configuration, can also will be designed as 0.03m positioned at the height of middle magnetic rheology elastic body 6 is smaller, on Lower two magnetic rheology elastic bodies 6 are 0.04m.
Second step, install magnetorheological elasticity between the three sections of connecting shafts 701 and installation through-hole 301 of multilayer grooved oscillator 7 The inside and outside suit stickup of body 6 and copper band 5, magnetic rheology elastic body 6 and copper band 5 is fixed as one, and 5 outer ring of copper band is close to be fixed on installation On through hole 301,6 inner ring of magnetic rheology elastic body envelopes 701 outer rim of connecting shaft；
3rd step, in the outside of multilayer grooved oscillator 7 install vertical magnetic conductive pole 2, cruciform member 3 additional, makes to hang down by screw thread It is fixed as one to magnetic conductive pole 2 and the connection of cruciform member 3, and is reinforced by reinforcing nut 9, in the coiling of cruciform member 3 Winding magnet exciting coil 4 in groove 302；
4th step, the component for assembling the 3rd step are integrally carried out every magnetic treatment, such as：In vertical magnetic conductive pole 2, cross Magnetic separator layer is coated outside crossbeam 3 and magnet exciting coil 4, then is installed on chassis pedestal 1, alternatively, the 3rd step is assembled Component integral installation on chassis pedestal 1, then bump leveller is integrally carried out every magnetic treatment, such as：It is vertical in chassis pedestal 1 Magnetic conductive pole 2,4 outside integral coating magnetic separator layer of cruciform member 3 and magnet exciting coil；
5th step, by bump leveller multiple intervals in parallel be installed on rail vehicle bottom, or is individually attached to rail vehicle Bottom, in embodiment as shown in Figure 5, in individual railcar bottom, has been installed in parallel altogether 10.
After dynamic vibration absorber installs, when rail vehicle produces vertical vibration in the process of running, the vibration of car body is passed through Chassis pedestal 1, vertical magnetic conductive pole 2, cruciform member 3 and magnetic rheology elastic body 6 are transferred to multilayer grooved oscillator 7；Install in-orbit Vibrating sensor on road vehicle monitors car body vibration frequency when track irregularity (i.e. vibrational excitation frequency to vehicle) in real time, And control unit is fed back to, control unit changes the current strength by magnet exciting coil 4 according to feedback signal, so as to adjust magnetic current Become the rigidity of elastomer 6, the intrinsic frequency and vehicle body of railway vehicle vibration frequency moment for making bump leveller mutually tune, it is ensured that each frequency Under body oscillating energy can be absorbed by the multilayer grooved oscillator 7 of bump leveller, suppress car body vertical vibration, realize to car The wideband vibration damping of body.
Fig. 6 is running velocity when being 60km/h, the magnetorheological bump leveller of the installation present apparatus, passive type bump leveller and does not pacify The Vertical Acceleration collection of illustrative plates of car body when filling bump leveller.There are two vibration peak frequencies 1.38Hz, 1.94Hz in car body at this time, Using passive type bump leveller when carrying out car body Vibration Absorption Designing, it has to need to be directed to crest frequency at two and separately design, respectively Referred to as passive type bump leveller I, passive type bump leveller II.Seen by what can be will be apparent that in figure, the car of magnetorheological bump leveller is installed Body Vertical Acceleration spectrum density is both less than passive type bump leveller I, II, and effectiveness in vibration suppression is preferable；In the work of magnetorheological bump leveller Make outside frequency range, magnetorheological bump leveller can also play good damping effect, this is because the intrinsic frequency of magnetorheological bump leveller at this time Although rate can not play optimal resonance effect to the vibration of car body, compared to passive type bump leveller, magnetorheological bump leveller Intrinsic frequency is also coordinated very much with body oscillating frequency, it is possible to plays damping effect to a certain extent.
Fig. 7 is the magnetic induction line distribution map of Fig. 2, and along the cutting direction shown in Fig. 2, three layers of cruciform member 3 and both sides are hung down Two closed circuits are formed altogether to magnetic conductive pole 2, into " day " font.Magnetic induction line in magnetic circuit is unimpeded, and the magnetic force of different zones Intensity ratio is more uniform, illustrates that the magnetic structure of this bump leveller is reasonable.
Fig. 8 is the magnetorheological bump leveller Magnetic Induction Density Distribution figure of Fig. 2, and along the cutting direction shown in Fig. 2, magnetic field intensity is in Up and down, symmetrical distribution, the Distribution of Magnetic Field at upper and lower two pieces of magnetic rheology elastic bodies is identical, can improve magnetorheological elasticity The functional reliability of body.

Claims (10)

  1. A kind of 1. magnetic rheology elastic body semi-active type dynamic vibration absorber, it is characterised in that：The cross of configured in parallel above and below multilayer Crossbeam (3) is fixed on by vertical magnetic conductive pole (2) suspension of four verticals through four ends of " ten " word beam arm to be located at Below the chassis pedestal (1) of rail vehicle bottom；
    Multilayer grooved oscillator (7) includes the oscillator being parallel to each other above and below multilayer and connects positioned at oscillator center, by multilayer oscillator The connecting shaft (701) being fixed as one is connect, every layer of oscillator is respectively positioned between adjacent two layers cruciform member (3), and multilayer grooved shakes Form spaced multiple-layer stacked structure between sub (7) and cruciform member (3), load bearing spring (8) is by multilayer grooved oscillator (7) hang or support and be installed on cruciform member (3), between multilayer grooved oscillator (7) and vertical magnetic conductive pole (2) mutually solely It is vertical to depart from；
    Cruciform member (3) center opens up vertical installation through-hole (301), and the cross of the superiors is stretched into connecting shaft (701) upper end In the installation through-hole (301) of shape crossbeam (3), lower end is stretched into the installation through-hole (301) of undermost cruciform member (3), in Section is passed through out of the cruciform member (3) in intermediate layer installation through-hole (301), between installation through-hole (301) and connecting shaft (701) Magnetic rheology elastic body (6) equipped with annular, magnetic rheology elastic body (6) outer ring are close to be fixed on installation through-hole (301), inner ring bag Connecting shaft (701) outer rim is covered, multilayer grooved oscillator (7) can shake up and down along the axially opposing chassis pedestal (1) of installation through-hole (301) It is dynamic；
    On four beam arms of every layer of cruciform member (3), winding slot is opened up respectively from installation through-hole (301) towards beam arm end (302), winding magnet exciting coil (4) in winding slot (302)；On individual layer cruciform member (3), opposite two magnet exciting coils (4) Power positive cathode close to installation through-hole (301) one end on the contrary, on adjacent two layers cruciform member (3), correspondence position it is upper and lower The power positive cathode of two magnet exciting coils (4) is opposite；
    The connecting shaft (701) of multilayer grooved oscillator (7) is or its exterior covering magnetic separator layer every magnet；Cruciform member (3), vertical magnetic conductive pole (2) is magnetizer；The bump leveller and the interval magnetic of rail vehicle bottom；
    Two circles are formed between adjacent two layers cruciform member (3) from magnet exciting coil (4), cruciform member (3), vertical magnetic conductive pole (2), cruciform member (3), magnet exciting coil (4), magnetic rheology elastic body (6), magnet exciting coil (4), cruciform member (3), vertical The cross that magnetic conductive pole (2), cruciform member (3), magnet exciting coil (4), magnetic rheology elastic body (6) return magnet exciting coil (4) is handed over Pitch closed magnetic circuit；
    When rail vehicle produces vertical vibration in the process of running, the vibration of car body is by chassis pedestal (1), vertical magnetic conductive pole (2), cruciform member (3) and magnetic rheology elastic body (6) are transferred to multilayer grooved oscillator (7)；
    The vibrating sensor of installation on the rail vehicle monitors car body vibration frequency and feeds back to control unit in real time, control unit Current strength by magnet exciting coil (4) is changed according to feedback signal, so as to adjust the rigidity of magnetic rheology elastic body (6), makes suction The intrinsic frequency of device of shaking and vehicle body of railway vehicle vibration frequency moment mutually tune, it is ensured that the body oscillating energy under each frequency all may be used To be absorbed by the multilayer grooved oscillator (7) of bump leveller, suppress car body vertical vibration, realize the wideband vibration damping to car body.
  2. 2. magnetic rheology elastic body semi-active type dynamic vibration absorber according to claim 1, it is characterised in that：It is described vertical to lead Magnetic bar (2), cruciform member (3) and magnet exciting coil (4) are exterior to coat magnetic separator layer, and the magnet exciting coil (4) is enamel-cover Coil.
  3. 3. magnetic rheology elastic body semi-active type dynamic vibration absorber according to claim 1, it is characterised in that：It is described magnetorheological Nested copper band (5) between elastomer (6) and installation through-hole (301), copper band (5) and the close peace of four magnet exciting coils (4) of surrounding Through hole (301) one end is filled to be electrically connected；Magnetic rheology elastic body (6) and the inside and outside suit stickup of copper band (5) are fixed as one, copper band (5) Outer ring is close to be fixed on installation through-hole (301), and magnetic rheology elastic body (6) inner ring pastes connecting shaft (701) outer rim；Work as multilayer When oscillator (7) of slotting vibrates, the dragging of connecting shaft (701) makes magnetic rheology elastic body (6) elastic deformation, has oscillator and shakes up and down Dynamic leeway.
  4. 4. magnetic rheology elastic body semi-active type dynamic vibration absorber according to claim 3, it is characterised in that：It is described magnetorheological Elastomer (6) is highly less than the height of copper band (5).
  5. 5. magnetic rheology elastic body semi-active type dynamic vibration absorber according to claim 3, it is characterised in that：The winding slot (302) to be radially opened in two parallel wire casings on cruciform member (3) beam arm, winding slot (302) along installation through-hole (301) Using the side face of installation through-hole (301) as starting point.
  6. 6. magnetic rheology elastic body semi-active type dynamic vibration absorber according to claim 1, it is characterised in that：It is described vertical to lead Fixed between magnetic bar (2) and cruciform member (3), between vertical magnetic conductive pole (2) and chassis pedestal (1) using threaded connection, Multi-segment thread section, four ends of cruciform member (3) beam arm and the correspondence of chassis pedestal (1) are carried on vertical magnetic conductive pole (2) Threaded hole is opened up on position respectively.
  7. 7. magnetic rheology elastic body semi-active type dynamic vibration absorber according to claim 6, it is characterised in that：The chassis base The top side of seat (1) fitting rail vehicle bottom opens up the mounting groove of opening upwards, and four corners are respectively provided with a screw thread in mounting groove Hole, opens up screw thread reinforced hole on the corner of each threaded hole respectively；Vertical magnetic conductive pole (2) upper end is in the multi-diameter shaft of small end upward Shape, step surface is close on small end screws reinforce nut (9), reinforces bolts (10) and is upward through for four and reinforce nut (9), is tightened on In screw thread reinforced hole；It is close to cruciform member (3) on vertical magnetic conductive pole (2) and screws reinforcing nut (9).
  8. 8. magnetic rheology elastic body semi-active type dynamic vibration absorber according to claim 1, it is characterised in that：The multilayer is opened The oscillator of groove oscillator (7) is box-shaped, and four sides open up escape groove (702), and vertical magnetic conductive pole (2) passes through from escape groove (702), no Contacted with escape groove (702) vallecular cavity.
  9. 9. magnetic rheology elastic body semi-active type dynamic vibration absorber according to claim 1, it is characterised in that：The cross Crossbeam (3) quantity is three layers, the outer framework of four vertical magnetic conductive pole (2) and three layers of cruciform members (3) composition dynamic vibration absorber； The multilayer grooved oscillator (7) is the Dual-layer slotting oscillator in " string " font；Three sections of connecting shafts (701) and three annulars are magnetorheological Elastomer (6) coordinates, and forms the elastic connection between outer framework.
  10. A kind of 10. method of the magnetic rheology elastic body semi-active type dynamic vibration absorber described in type selecting installation claim 1：
    The first step, each theoretical parameter according to the theoretical definite bump leveller of dynamic vibration absorber：Bump leveller is reduced to two degrees of freedom mould Type, if Mj、Kj、CjAnd ZjShake based on respectively the quality for being, rigidity, damping and up-down vibration displacement, Md、Kd、CdAnd ZdRespectively inhale Shake quality, rigidity, damping and the up-down vibration displacement of device；Assuming that main shake is to be subject to harmonic excitation Fsin ω t, according to newton second Theorem, then the kinetics equation of the coupled system be：
    Bump leveller differential equation of motion：
    <mfenced open = "{" close = ""> <mtable> <mtr> <mtd> <msub> <mi>M</mi> <mi>j</mi> </msub> <msub> <mover> <mi>Z</mi> <mo>&amp;CenterDot;&amp;CenterDot;</mo> </mover> <mi>j</mi> </msub> <mo>+</mo> <mo>(</mo> <msub> <mi>C</mi> <mi>j</mi> </msub> <mo>+</mo> <msub> <mi>C</mi> <mi>d</mi> </msub> <mo>)</mo> <msub> <mover> <mi>Z</mi> <mo>&amp;CenterDot;</mo> </mover> <mi>j</mi> </msub> <mo>+</mo> <mo>(</mo> <msub> <mi>K</mi> <mi>j</mi> </msub> <mo>+</mo> <msub> <mi>K</mi> <mi>d</mi> </msub> <mo>)</mo> <msub> <mi>Z</mi> <mi>j</mi> </msub> <mo>-</mo> <msub> <mi>C</mi> <mi>d</mi> </msub> <msub> <mover> <mi>Z</mi> <mo>&amp;CenterDot;</mo> </mover> <mi>d</mi> </msub> <mo>-</mo> <msub> <mi>K</mi> <mi>d</mi> </msub> <msub> <mi>Z</mi> <mi>d</mi> </msub> <mo>=</mo> <mi>F</mi> <mi> </mi> <mi>s</mi> <mi>i</mi> <mi>n</mi> <mi>&amp;omega;</mi> <mi>t</mi> </mtd> </mtr> <mtr> <mtd> <msub> <mi>M</mi> <mi>d</mi> </msub> <msub> <mover> <mi>Z</mi> <mo>&amp;CenterDot;&amp;CenterDot;</mo> </mover> <mi>d</mi> </msub> <mo>-</mo> <msub> <mi>C</mi> <mi>d</mi> </msub> <msub> <mover> <mi>Z</mi> <mo>&amp;CenterDot;</mo> </mover> <mi>j</mi> </msub> <mo>-</mo> <msub> <mi>K</mi> <mi>d</mi> </msub> <msub> <mi>Z</mi> <mi>j</mi> </msub> <mo>+</mo> <msub> <mi>C</mi> <mi>d</mi> </msub> <msub> <mover> <mi>Z</mi> <mo>&amp;CenterDot;</mo> </mover> <mi>d</mi> </msub> <mo>+</mo> <msub> <mi>K</mi> <mi>d</mi> </msub> <msub> <mi>Z</mi> <mi>d</mi> </msub> <mo>=</mo> <mn>0</mn> </mtd> </mtr> </mtable> </mfenced>
    The following need to be introduced by carrying out research to dynamic vibration absorber：
    Dynamic vibration absorber and main shake are mass ratio：
    The main inherent circular frequency for being that shakes：Known ωj=2 π fj,fjBased on shake the intrinsic time frequency for being；
    The inherent circular frequency of dynamic vibration absorber vibration：Known ωd=2 π fd, fdFor the intrinsic time frequency of bump leveller Rate；
    The damping ratio of dynamic vibration absorber：
    Bump leveller and the main vibration ratio for being that shakes：
    In two degrees of freedom model of vibration, when dynamic vibration absorber meets certain condition, bump leveller could at utmost absorb master Shake the vibrational energy for being, bump leveller has preferable effectiveness in vibration suppression, and actual conditions is as follows：
    Optimal people having the same aspiration and interest condition：
    <mrow> <mi>&amp;gamma;</mi> <mo>=</mo> <mfrac> <mn>1</mn> <mrow> <mn>1</mn> <mo>+</mo> <mi>&amp;mu;</mi> </mrow> </mfrac> </mrow>
    Optimal damper condition：
    <mrow> <mi>&amp;zeta;</mi> <mo>=</mo> <msqrt> <mfrac> <mrow> <mn>3</mn> <mi>&amp;mu;</mi> </mrow> <mrow> <mn>8</mn> <msup> <mrow> <mo>(</mo> <mn>1</mn> <mo>+</mo> <mi>&amp;mu;</mi> <mo>)</mo> </mrow> <mn>3</mn> </msup> </mrow> </mfrac> </msqrt> </mrow>
    The then intrinsic frequency f of bump levellerdIt should be designed as：
    <mrow> <msub> <mi>f</mi> <mi>d</mi> </msub> <mo>=</mo> <mfrac> <msub> <mi>f</mi> <mi>j</mi> </msub> <mrow> <mn>1</mn> <mo>+</mo> <mi>&amp;mu;</mi> </mrow> </mfrac> </mrow>
    It can thus be appreciated that the rigidity Design value K of bump levellerdFor：
    <mrow> <msub> <mi>K</mi> <mi>d</mi> </msub> <mo>=</mo> <mn>4</mn> <msup> <mi>&amp;pi;</mi> <mn>2</mn> </msup> <msub> <mi>M</mi> <mi>d</mi> </msub> <msup> <msub> <mi>f</mi> <mi>d</mi> </msub> <mn>2</mn> </msup> <mo>=</mo> <mfrac> <mrow> <mn>4</mn> <msup> <mi>&amp;pi;</mi> <mn>2</mn> </msup> <msub> <mi>M</mi> <mi>d</mi> </msub> <msup> <msub> <mi>f</mi> <mi>j</mi> </msub> <mn>2</mn> </msup> </mrow> <msup> <mrow> <mo>(</mo> <mn>1</mn> <mo>+</mo> <mi>&amp;mu;</mi> <mo>)</mo> </mrow> <mn>2</mn> </msup> </mfrac> </mrow>
    The damping C of bump leveller according to the damping ratio formula of bump levellerdFor：
    Cd=4 π Mdfdζ
    The solution value of above-mentioned formula is solved according to auto model, solution value and corresponding magnetorheological elasticity further according to above-mentioned formula The correlation properties of body are solved, and choose elastic damping member of the magnetic rheology elastic body (6) for meeting and calculating and requiring as bump leveller Part, determines the mass elements of the quality size and the number of plies of multilayer grooved oscillator (7) as bump leveller, and according to multilayer grooved oscillator (7) quality size chooses the suitable load bearing spring of rigidity (8) balance vibrators gravity；
    Second step, install magnetic rheology elastic body between the connecting shaft (701) of multilayer grooved oscillator (7) and installation through-hole (301) (6), magnetic rheology elastic body (6) inner ring envelopes connecting shaft (701) outer rim, and outer ring is close to be fixed on installation through-hole (301)；
    3rd step, in the outside of multilayer grooved oscillator (7) install vertical magnetic conductive pole (2), cruciform member (3) additional, makes vertical magnetic conduction Bar (2) and cruciform member (3) connection are fixed as one, the winding magnet exciting coil in the winding slot (302) of cruciform member (3) (4)；
    4th step, the component for assembling the 3rd step are integrally carried out every magnetic treatment, then are installed on chassis pedestal (1), alternatively, will The component integral installation that 3rd step assembles is on chassis pedestal (1), then bump leveller is integrally carried out every magnetic treatment；
    5th step, by the multiple intervals of bump leveller be installed on rail vehicle bottom, or is individually attached to rail vehicle bottom.
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CN110608260A (en) * 2019-10-16 2019-12-24 上海工程技术大学 Mass-adjustable vibration absorber for urban rail vehicle and vibration reduction principle
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CN110985591A (en) * 2019-12-17 2020-04-10 南京师范大学 Controllable magnetorheological elastomer suspension system for power battery pack
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CN114248813A (en) * 2021-11-29 2022-03-29 同济大学 Variable-damping dynamic vibration absorber for railway vehicle
CN115289175A (en) * 2022-08-26 2022-11-04 上海工程技术大学 Vehicle suspension damping support
CN115367045A (en) * 2022-08-30 2022-11-22 中船澄西船舶修造有限公司 Anti-vibration reinforcing structure between main engine room and oil distributing machine room

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CN113669404B (en) * 2021-06-25 2022-10-21 上海工程技术大学 Magnetorheological elastomer composite vibration absorber device with double-vibrator structure
CN113942533A (en) * 2021-11-17 2022-01-18 同济大学 Under-vehicle shock absorber for inhibiting vertical vibration of railway vehicle body
CN114248813A (en) * 2021-11-29 2022-03-29 同济大学 Variable-damping dynamic vibration absorber for railway vehicle
CN115289175A (en) * 2022-08-26 2022-11-04 上海工程技术大学 Vehicle suspension damping support
CN115289175B (en) * 2022-08-26 2024-09-17 上海工程技术大学 Vibration reduction support for vehicle suspension
CN115367045A (en) * 2022-08-30 2022-11-22 中船澄西船舶修造有限公司 Anti-vibration reinforcing structure between main engine room and oil distributing machine room

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