CN206956466U - A kind of multistage shearing shaped steel rail dynamic damping bump leveller - Google Patents
A kind of multistage shearing shaped steel rail dynamic damping bump leveller Download PDFInfo
- Publication number
- CN206956466U CN206956466U CN201720244647.8U CN201720244647U CN206956466U CN 206956466 U CN206956466 U CN 206956466U CN 201720244647 U CN201720244647 U CN 201720244647U CN 206956466 U CN206956466 U CN 206956466U
- Authority
- CN
- China
- Prior art keywords
- rail
- steel rail
- multistage
- resonant
- shaped steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Railway Tracks (AREA)
Abstract
The utility model belongs to railway technology field, a kind of multistage shearing shaped steel rail dynamic damping bump leveller, the multistage resonant combinations (4) formed including two or more resonant mass gauge block (2) and elastomeric damping layer (3), described two or more resonant mass gauge block (2) is parallel in elastomeric damping layer (3), (10) and steel rail web face (11) are set above rail foot of the described multistage resonant combinations (4) along rail (1), and are formed with (10) above rail foot and steel rail web face (11) and be connected closely.Compared with prior art, when the multiple resonant mass gauge blocks (2) of the utility model are vibrated in addition to the motion in horizontal and vertical direction, detrusion is formed simultaneously between each resonant mass gauge block (2).Scissoring vibration deformation direction along ng a path forms the fluctuation dynamic damping bump leveller that wave phase difference forms different resonance from rail vibration direction along ng a path travelling-wave shock in the opposite direction.
Description
Technical field
The utility model belongs to railway technology field, and in particular to a kind of multistage shearing shaped steel rail dynamic damping bump leveller.
Background technology
Due to the popularization of track traffic, its caused vibration noise problem also becomes increasingly conspicuous.In densely populated city,
Subway, light rail and inter-city passenger rail also have the construction of the Rail Transit Systems such as high ferro and operation to be avoided that house, business, do
The Environmentally Sensitive Area domain such as public, hospital and school, and track traffic occupies very big share in ambient vibration noise pollution.Track
Vibration noise problem in traffic, not only influences inhabitation and the working environment of surrounding, and can influence effective fortune of the railway system
Battalion.In order to meet the requirement of environmental standard, some trains can only reduce the speed of service, at the same also need in some regions to reduce or
Cancel some order of classes or grades at school, result is that its designed capacity can not be fully achieved, so as to reduce the economic benefit of rail transport.
Swashing when one of major source of ambient vibration noise pollution caused by track traffic is track and wheel contact
Encourage power and produce vibration and noise, its influence are not limited solely near track, and the building of surrounding can be traveled to by roadbed,
Or be delivered to by wheel in railway carriage, cause body oscillating and further produce noise.Track by carrier vehicle because being rushed
Hit and the rough suitable excitation of running surface of wheeltrack can produce strong vibration, especially in the characteristic frequency of rail system or its is attached
Near vibration is often stronger.The most efficient method of Noise and Vibration Control is the vibration noise that takes measures or block from vibration source
Route of transmission.
Due to the different operating modes of track structure and operation vehicle, the vibration of rail system and its noise have wide-band, multifrequency
The feature of section.Using the damping shock absorber with multistage resonance function started with solution/reduction track system from source from track
One of method of vibration noise problem of system.The vibration amplitude that the use of damping shock absorber can lower rail vibrates so as to reduce
Caused noise radiation.
The content of the invention
The purpose of this utility model is exactly to provide a kind of multistage shearing the defects of overcoming above-mentioned prior art to exist
Shaped steel rail dynamic damping bump leveller.
The purpose of this utility model can be achieved through the following technical solutions：A kind of multistage shearing shaped steel rail dynamic damping
Bump leveller, it is characterised in that the multistage resonant combinations formed including two or more resonant mass gauge block and elastomeric damping layer, it is described
Two or more resonant mass gauge block be parallel in elastomeric damping layer, rail rail of the described multistage resonant combinations along rail
Above pin and steel rail web face is set, and forms close connection with above rail foot and steel rail web face.
It is connected between described two or more resonant mass gauge block by flexible connecting member, the equivalent stiffness of flexible connecting member is less than
The 1/2 of the equivalent stiffness of elastomeric damping layer.
Resonant mass gauge block is the multiple independent mass blocks connected by elastomeric damping layer, is arranged along rail length direction, is formed
The multistage resonant combinations of the multiple degrees of freedom spring mass system of direction along ng a path；It is more that this design is that direction along ng a path forms
Free degree spring mass system, possess two or more rigidity mass ratioes or the resonator system no less than two mode；
While for track transverse direction and vertical vibration, relative scissoring vibration deformation is produced between each mass；Described shearing
Vibration deformation direction along ng a path forms wave phase difference and forms fluctuation in the opposite direction with rail vibration direction along ng a path travelling-wave shock
Dynamic damping bump leveller.
The arrangement of multiple resonant mass gauge blocks of direction along ng a path arrangement forms multi-mode resonance frequencies and simultaneously multistage humorous
The vibrational energy of vibration frequency consume each rank resonance frequency omega and elastomeric damping layer equivalent modalities rigidity k and resonant mass gauge block etc.
Effect modal mass m relation is
Modal mass m corresponding with the vibration peak of rail the tuned mass m of each resonant mass gauge blockmThe ratio between μ=m/mmIt is full
Foot 0.1<μ<1；
Tuned mass m per single resonant mass gauge block increases the mass of vibration of rail below its resonance frequency omega, reduces
The vibration peak of rail.
Described elastomeric damping layer is connects the elastomeric spring of multiple resonant mass gauge blocks, the equivalent modalities rigidity k of its rigidity
=ω2M, m are the equivalent modalities quality of resonant mass gauge block, and ω is resonant frequency；Described elastomeric damping layer provides power simultaneously
The damping function of damping absorber, the damping loss factor scope of its elastomeric damping layer is 0.05-0.5；Elastomeric damping layer supports
Resonant mass gauge block and frequency more than resonant frequency are by resonant mass gauge block and the isolating technique of rail, elastomeric damping layer and resonance
Mass forms multivariant spring-mass resonator system.
The contact with above the foot of rail and steel rail web face of described elastomeric damping layer is the part of not all covering
The ratio in the way of contact, actual contact surface and accessible face is 10%-100%, and contact surface carries groove or netted or post type.
The resonance frequency band scope of the multistage resonant combinations of resonant mass gauge block and elastomeric damping layer composition is a broadband
Or the segmentation frequency band of multiple certain bandwidth.
Described multistage resonant combinations outside arrangement limited location attaching means, the spacing attaching means by spring secures rail to sleeper with
Rail connection positioning.Its effect of spacing attaching means is the vertical and transverse vibrational displacement amount for limiting mass so that ensure will not be to car
The operation of wheel and track has an impact, but does not also interfere with the effectiveness in vibration suppression of this damping absorber, while also exists for damper
It is convenient that installation on rail provides, and also the outer surface of multistage resonant combinations is shielded in addition.
The material of described spacing attaching means is metal or other elastic composites for having some strength, spacing attaching means
Section be plate shape, netted, circular or rectangle.
Described resonant mass gauge block is that a simple substance amount is overall to be either made up of multiple protonatomic mass bodies with elastic body
Mass unit, the geometry of protonatomic mass body is spheroid or cylinder or cuboid or gengon etc..
Resonant mass gauge block is placed in the casing of sealing by multiple protonatomic mass bodies, and the space between protonatomic mass body is filled with
Elastomeric damping layer, elastomeric damping layer are liquid or viscous medium.
Described resonant mass gauge block is high density material, and its density of material is more than the density of material of rail, and cross sectional shape is
Circular, ellipse, rectangle or polygon.
Described elastomeric damping layer is elastomer or geotextiles or other with damped elasticity speciality made of rubber
Metal material or nonmetallic materials.
Described multistage shearing shaped steel rail dynamic damping bump leveller is fixed on rail by elastic fastener, or is used
The mode of bonding is connected with rail.
Compared with prior art, the utility model is started with from the source of the problem of generation, is reached control or is reduced rail system
Vibration noise, the utility model provides a kind of multistage shearing shaped steel rail dynamic damping bump leveller, and the damping absorber is by leading to
Multiple independent multistage resonant mass gauge blocks of elastomeric damping layer connection are crossed, form multistage resonant combinations, resonant mass gauge block then edge
The length direction arrangement form fluctuation dynamic damping bump leveller of rail.The great advantage of this design is formd along rail system
Multiple degrees of freedom spring mass system, the frequency band range of composition are the segmentation frequency bands of a broadband or multiple certain bandwidth.In pin
While to track transverse direction and vertical vibration, due to scissoring vibration deformation relative between each mass, further increase
The consumption of rail vibration energy, while suppress the transmission of vibrational energy direction along ng a path.
The applicable frequency range of the utility model is：Rail oscillation crosswise 300Hz-800Hz, rail vertical vibration
300Hz-1600Hz.Expected rail vibration speed is horizontal to reduce 10dB-20dB, noise radiation water caused by corresponding rail vibration
Pancake low 3dB (A) -8dB (A).
Brief description of the drawings
Fig. 1 is the structural section view of the utility model embodiment 1；
Fig. 2 is Fig. 1 A-A sectional views；
Fig. 3 is Fig. 2 B-B profiles；
The spring secures rail to sleeper structural representation of Fig. 4 embodiments 1；
Fig. 5 is Fig. 3 C side views；
Fig. 6 is the sectional view of embodiment 3；
Fig. 7 is the schematic section of embodiment 4；
Fig. 8 is the schematic section of embodiment 5；
In figure：
1st, rail；2nd, resonant mass gauge block；3rd, elastomeric damping layer；4th, multistage resonant combinations；5th, spacing attaching means；6th, it is flexible
Connector；7th, spring secures rail to sleeper；8th, on the outside of assembly；9th, connecting bottom board；10th, above rail foot；11st, steel rail web face；20th, it is sub
Mass body；30th, elastic body；31st, groove；32nd, spring support；33rd, spring support fixing bolt component；33rd, spot welding connection riveting
Nail.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in Figures 1 to 3 be that the section of the utility model " a kind of multistage shearing shaped steel rail dynamic damping bump leveller " shows
It is intended to.The major part of this damping absorber is the resonant combinations 4 of the composition of multistage resonant mass gauge block 2 and elastomeric damping layer 3；
Length direction arrangement form fluctuation dynamic damping bump leveller of the resonant mass gauge block 2 along rail 1.The great advantage of this design is edge
Rail system forms multiple degrees of freedom spring mass system, and the frequency band range of composition is a broadband or multiple certain bandwidth
It is segmented frequency band.While for track transverse direction and vertical vibration, because scissoring vibration relative between each mass deforms,
The consumption of rail vibration energy is further increased, while suppresses the transmission of vibrational energy direction along ng a path.
Resonant combinations 4 therein include the resonant mass gauge block 2 of 3 direction along ng a path arrangements.3 resonant mass gauge blocks 2
It is separate and is embedded in high-damping rubber material in i.e. elastomeric damping layer 3, each resonant mass gauge block and high-damping rubber
Material forms assembly with the mode of vulcanization.Elastomeric material provides resilient support and damping effect, while it is humorous to play protection fixation
Shake the effect of mass.
3 resonant mass gauge blocks 2 are connected before being integrated with the vulcanization of elastomeric damping layer 3 by flexible connecting member 6, flexible connecting member
6 are used to limit the spacing between mass in sulfidation, and meet design calculating requirement with the thickness of elastomeric damping layer 3.
The equivalent stiffness of its flexible connecting member 6 is the 1/5 of the elastic body equivalent stiffness of damping layer 3, and flexible connecting member 6 does not influence resonant mass
The bonding firmness of gauge block 2 and elastomeric damping layer 3.
In order to ensure that the Low rigidity of the resonance effect of damping absorber and resonant mass gauge block 2 designs, as shown in Fig. 2 in bullet
The region that the outside of property damping layer 3 is in contact with above rail foot 10 and steel rail web face (11), devise on its damping layer
Groove 31, the contact area of damping absorber and rail is reduced, reach the coupling stiffness for reducing damping absorber and rail, this is right
The one class resonant frequency for reducing damping absorber is of practical significance, i.e. the lower limit of the effective frequency range of damping absorber, together
When meet the contact strength of damping absorber and rail.
The non-rail contact in outside for the multistage resonant combinations 4 that the design forms in resonant mass gauge block 2 and elastomeric damping layer 3
The spacing attaching means 5 that face is provided with, the vertical and transverse vibrational displacement amount of mass is limited so that ensure will not be to wheel and track
Operation have an impact, but do not interfere with the effectiveness in vibration suppression of this damping absorber, spacing attaching means can be that damping is inhaled in addition yet
The device spring secures rail to sleeper 7 that shakes provides can be further illustrated below installation force annex, while spacing attaching means 5 also can be to multistage humorous
The assembly 4 that shakes shields.
It is with binding agent that the multistage resonant combinations 4 of the present embodiment, which are symmetrically mounted on the both sides of rail 1 and the connection of rail,
The mode of bonding, this bonding mode need not add other installation parts, and track surrounding space is narrow and small or has other limitations
In the case of can yet be regarded as a kind of simple and feasible method.
The damping absorber of this example is provided with 3 resonant mass gauge blocks 2, forms and is with 3 rank above resonant frequencies
System.Under made further instructions by taking subway circulation as an example：
The preceding 3 rank mode of rail frequency is 350Hz, 600Hz and 950Hz, and the rigidity mass ratio of 3 resonance modes should
3.1e3,9.1e3 and 2.9e4 are designed as, thus further designs the weight of each resonant mass gauge block 2 and elastomeric damping layer 3
Thickness.Design can be verified by finite element method.
Embodiment 2：
This application embodiment and the above embodiments 1 are essentially identical, and difference is damper mode fixed on rail
It is different.As shown in Figure 4 and Figure 5, damping absorber is to be fixed on by spring secures rail to sleeper 7 on rail 1.
Spring secures rail to sleeper 7 is made of high resiliency spring steel, will be hindered by the thrust for being applied to damping absorber lateral surface
Buddhist nun's bump leveller is fixed on the non-working surface of rail 1.
The fixed form of spring secures rail to sleeper 7 is easy for dismantling compared with the above embodiments 1, its advantage, but requires that rail foot surface leaves
Enough spaces.The pressure that other spring secures rail to sleeper 7 is applied on damping absorber wants sufficiently large to ensure that damping absorber exists
It will not fall off during vibration, can not limit the resonance effect of damping absorber greatly very much again.
It is to use a spring secures rail to sleeper to be located at the situation in the middle part of damping absorber shown in Fig. 5, but this is not unique, elasticity
The size and required thrust optimization design of the visual damping absorber of quantity of fastener 7.
Embodiment 3：
Embodiment 3 is similar to Example 1, and difference is not one in the single mass body in described resonant mass gauge block 2
Monoblock, but be made up of multiple protonatomic mass bodies 20 being placed in flexible damping characteristic medium.It is as shown in fig. 6, therein
Each protonatomic mass body 20 may also be to be made up of the object of different size materials, such as cylinder, spheroid or irregular body.Because per height
The resonant frequency of mass body 20 is different, so as to broaden effective application of damping absorber.
Because frequencyMeant that using the protonatomic mass body of small quality further increase damping absorber every
The vibration frequency upper limit.
Damper can be with binding agent bonding or the mode of spring secures rail to sleeper with being arranged on rail.
Embodiment 4：
Embodiment 4 shows another method being fixed on damping absorber on rail.As shown in fig. 7, damping
Device and rail are connected by spot welding connection rivet 33.According to the weight and size of damper, it is connected at it with steel rail web upper
Hold and respectively arrange the connector of 2-3 set spot welding connection rivet 33 with the end that foot is connected above.
Spot welding connection rivet 33 is different from common welding because the fusing point of solder it is low will not have to the metal structure of rail appoint
What influences, and will not also make deformation of rail, so the intensity of rail in itself will not be reduced, not have shadow to the security of rail system
Ring.The bonding strength of spot welding connection rivet and rail can also bear dynamic force during damper vibration.
Embodiment 5：
If rail is mounted on road bed board, and there is no enough spaces to come installation diagram 4 and the bullet shown in Fig. 5 under the flange of rail
Property fastener 7, Fig. 8 illustrate another spring steel bracket being fixed on road bed board.Damper contact with rail contact surface
Pressure is controlled by adjustable spring support 32, and spring support 32 is consolidated by spring support fixing bolt component 33 and connecting bottom board 9
It is fixed.
Elastomeric damping layer and the groove 31 on rail contact surface can be substituted with different grooves or post design.
Elastic damping material uses elastomeric material, or silica gel.
It is described above simply to briefly explain some principles and structure of the present utility model, not only have described structure and table
Existing form, it is all using simple modification of the present utility model and equivalent, belong to the scope of the claims that the utility model is protected.
Claims (11)
- A kind of 1. multistage shearing shaped steel rail dynamic damping bump leveller, it is characterised in that including two or more resonant mass gauge block (2) and The multistage resonant combinations (4) that elastomeric damping layer (3) is formed, described two or more resonant mass gauge block (2) are parallel to bullet Property damping layer (3) in, (10) and steel rail web face above rail foot of the described multistage resonant combinations (4) along rail (1) (11) set, and formed with (10) above rail foot and steel rail web face (11) and be connected closely.
- 2. the multistage shearing shaped steel rail dynamic damping bump leveller of one kind according to claim 1, it is characterised in that described two It is connected between individual above resonant mass gauge block (2) by flexible connecting member (6), the equivalent stiffness of flexible connecting member (6) is less than elasticity and hindered The 1/2 of the equivalent stiffness of Buddhist nun's layer (3).
- 3. the multistage shearing shaped steel rail dynamic damping bump leveller of one kind according to claim 1, it is characterised in that described two Individual above resonant mass gauge block (2) arranges along rail length direction and connected by elastomeric damping layer (3), forms the more of direction along ng a path The multistage resonant combinations (4) of free degree spring mass system.
- 4. the multistage shearing shaped steel rail dynamic damping bump leveller of one kind according to claim 1, it is characterised in that described bullet Property damping layer (3) to connect the elastomeric spring of multiple resonant mass gauge blocks (2).
- 5. the multistage shearing shaped steel rail dynamic damping bump leveller of one kind according to claim 1, it is characterised in that described bullet Property damping layer (3) contact with (10) and steel rail web face (11) above the foot of rail (1) connect for the part of not all covering The mode of touching, contact surface is with groove (31) or to be netted or be post type.
- 6. the multistage shearing shaped steel rail dynamic damping bump leveller of one kind according to claim 1, it is characterised in that described is more The outside arrangement limited location attaching means (5) of rank resonant combinations (4), the spacing attaching means (5) pass through spring secures rail to sleeper (7) and rail (1) connection positioning.
- 7. the multistage shearing shaped steel rail dynamic damping bump leveller of one kind according to claim 6, it is characterised in that described limit The material of position attaching means (5) is metal material, and the section of spacing attaching means (5) is plate shape, netted or circular.
- 8. the multistage shearing shaped steel rail dynamic damping bump leveller of one kind according to claim 1, it is characterised in that described is humorous The mass (2) that shakes is the overall quality list being either made up of multiple protonatomic mass bodies (20) and elastic body (30) of a simple substance amount Member.
- 9. the multistage shearing shaped steel rail dynamic damping bump leveller of one kind according to claim 1, it is characterised in that described is humorous The mass (2) that shakes is high density material, and its density of material is more than the density of material of rail, cross sectional shape for circular, ellipse or Rectangle.
- 10. the multistage shearing shaped steel rail dynamic damping bump leveller of one kind according to claim 1, it is characterised in that described Elastomeric damping layer (3) is elastomer or geotextiles made of rubber.
- 11. the multistage shearing shaped steel rail dynamic damping bump leveller of one kind according to claim 1, it is characterised in that described Multistage shearing shaped steel rail dynamic damping bump leveller is fixed on rail by elastic fastener (7), or by the way of bonding It is connected with rail (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720244647.8U CN206956466U (en) | 2017-03-14 | 2017-03-14 | A kind of multistage shearing shaped steel rail dynamic damping bump leveller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720244647.8U CN206956466U (en) | 2017-03-14 | 2017-03-14 | A kind of multistage shearing shaped steel rail dynamic damping bump leveller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206956466U true CN206956466U (en) | 2018-02-02 |
Family
ID=61377069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720244647.8U Active CN206956466U (en) | 2017-03-14 | 2017-03-14 | A kind of multistage shearing shaped steel rail dynamic damping bump leveller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206956466U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107254814A (en) * | 2017-03-14 | 2017-10-17 | 上海工程技术大学 | A kind of multistage shearing shaped steel rail dynamic damping bump leveller |
| CN108277702A (en) * | 2018-02-06 | 2018-07-13 | 上海工程技术大学 | A kind of low stress high-damping railway fastening elastic rod |
| CN109594434A (en) * | 2018-11-22 | 2019-04-09 | 同济大学 | A kind of nacre structure rail damper |
| CN111535082A (en) * | 2020-05-09 | 2020-08-14 | 上海工程技术大学 | Multidirectional hydraulic vibration reduction dynamic vibration absorber structure of steel rail |
| CN112030622A (en) * | 2020-09-10 | 2020-12-04 | 青岛声达技术有限公司 | Embedded track dynamic vibration absorber |
-
2017
- 2017-03-14 CN CN201720244647.8U patent/CN206956466U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107254814A (en) * | 2017-03-14 | 2017-10-17 | 上海工程技术大学 | A kind of multistage shearing shaped steel rail dynamic damping bump leveller |
| CN107254814B (en) * | 2017-03-14 | 2023-08-29 | 上海工程技术大学 | Multistage shearing type steel rail dynamic damping vibration absorber |
| CN108277702A (en) * | 2018-02-06 | 2018-07-13 | 上海工程技术大学 | A kind of low stress high-damping railway fastening elastic rod |
| CN109594434A (en) * | 2018-11-22 | 2019-04-09 | 同济大学 | A kind of nacre structure rail damper |
| CN111535082A (en) * | 2020-05-09 | 2020-08-14 | 上海工程技术大学 | Multidirectional hydraulic vibration reduction dynamic vibration absorber structure of steel rail |
| CN111535082B (en) * | 2020-05-09 | 2021-08-10 | 上海工程技术大学 | Multidirectional hydraulic vibration reduction dynamic vibration absorber structure of steel rail |
| CN112030622A (en) * | 2020-09-10 | 2020-12-04 | 青岛声达技术有限公司 | Embedded track dynamic vibration absorber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107254814A (en) | A kind of multistage shearing shaped steel rail dynamic damping bump leveller | |
| CN206956466U (en) | A kind of multistage shearing shaped steel rail dynamic damping bump leveller | |
| CN105908581B (en) | A kind of composite particles damper for reducing rail vibration noise | |
| CN202530345U (en) | Steel rail absorber | |
| CN108708231B (en) | A kind of built-in metal oscillator vibration and noise reducing dynamic vibration absorber structure of rail | |
| WO2008043249A1 (en) | A rail with vibration damper | |
| CN103526652B (en) | The ladder-type sleepers track structure of passive type power vibration damping | |
| CN106758571A (en) | A kind of track vibration damping denoising device | |
| CN110528338A (en) | A kind of floating plate rail structure for being used to container based on external and built-in hydraulic type | |
| CN110329080B (en) | Damping pantograph for rail transit train | |
| CN103981779A (en) | Broadband noise-reduction steel rail | |
| CN106758569A (en) | Damping-constraining noise reducing plate | |
| CN101413231A (en) | Design and structure of self-locking type rail base dynamic vibration absorber | |
| CN109112909A (en) | A kind of track vibration-reducing device | |
| KR20140010741A (en) | Rail for railroad | |
| CN106012709A (en) | Composite vibration isolation device based on particle damping and memory alloy material | |
| KR20150049750A (en) | Experimental Study on Hybrid Damper using a High-Damping Rubber and a Steel Pin | |
| CN206359839U (en) | Damping-constraining noise reducing plate | |
| CN206570626U (en) | A kind of track vibration damping denoising device | |
| CN212688579U (en) | Vibration and noise reduction device for track floating plate | |
| CN210454472U (en) | Damping pantograph for rail transit train | |
| CN206512528U (en) | Damping-constraining vibration-damping noise-reducing board | |
| CN108591355A (en) | A kind of vertical vibration isolation bearing | |
| CN108004854A (en) | The Hierarchical Track harden structure of embedded energy-consuming device | |
| CN208417387U (en) | A kind of vertical vibration isolation support |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |