CN204356597U - Prepressing type floating plate track vibration isolator - Google Patents
Prepressing type floating plate track vibration isolator Download PDFInfo
- Publication number
- CN204356597U CN204356597U CN201420745254.1U CN201420745254U CN204356597U CN 204356597 U CN204356597 U CN 204356597U CN 201420745254 U CN201420745254 U CN 201420745254U CN 204356597 U CN204356597 U CN 204356597U
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- China
- Prior art keywords
- vibration isolator
- precompressed
- floating plate
- cover clamp
- stud
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- 238000007667 floating Methods 0.000 title claims abstract description 40
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 238000013016 damping Methods 0.000 claims description 19
- 230000004308 accommodation Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000003068 static effect Effects 0.000 description 13
- 238000006073 displacement reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002955 isolation Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- 241000145637 Lepturus Species 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- Vibration Prevention Devices (AREA)
Abstract
Prepressing type floating plate track vibration isolator, with effectively reduce train by time vibration isolator and the maximum vertical deviation of track plates, reduce the stress and strain of track plates, improve the stress condition of track plates.The elastic component comprising base, pre-cover clamp and be arranged between the two.Also be provided with prepressing device between described base and pre-cover clamp, this prepressing device acts on pre-cover clamp, acts on elastic component make it produce predetermined compression by pre-cover clamp.
Description
Technical field
The utility model belongs to railroad track vibration and field of noise control, is a kind of vibration isolator of the floating plate track for fields such as high ferro, subway, light rail and new city track traffics.
Background technology
Floating plate track is a kind of effective ways solving vibration & noise problem in track traffic.Floating plate track puts Elastic Isolator by dividing at track plates, by the vibration of track plates and base isolation, reaches the object of vibration insulation and noise reduction.Floating plate track is a mass-spring-damper vibrating isolation system in essence, and the quality of system isolation performance depends primarily on the rigidity of vibration isolator and the quality value of track plates.Track plates quality is larger, and vibration isolator rigidity is less, and the intrinsic frequency of system is lower, and the vibration isolating effect of floating plate track is better.Thus consider that vibration isolator rigidity should get less value as far as possible from anti-vibration performance angle.
But the vibration isolator of Low rigidity can cause train by time track plates amount of deflection strengthen.For continuous type floating plate, large vertical deviation means the significant flexural deformation of the appearance of track plates, and this is in a kind of totally unfavorable stress by making track plates.For floating plate track system in shield type tunnel, when its intrinsic frequency is about 8Hz, can reach about 4mm in the vertical maximum displacement of train rated load lower railway plate, the maximum tension stress of track plates is close to concrete tensile stress limiting value.In floating track plates design of vibration isolator, in order to improve the stress of track plates, reduce the possibility that crackle appears in track plates, improve its durability, just needing improve the bending strength of track plates or reduce the vertical amount of deflection of track plates, can only realize by increasing vibration isolator rigidity for common floating track plates vibration isolator.To sum up, from the viewpoint of track plates stability, stressed and durability, require that vibration isolator rigidity value should be got greatly as far as possible.
Therefore, at the floating plate track vibration isolator adopted at present, anti-vibration performance and track plates stressed be the contradiction being difficult to be in harmonious proportion, little vibration isolator rigidity can obtain ideal anti-vibration performance but track plates stress condition can be caused severe, reduces its durability; It is stressed but anti-vibration performance can be caused to be deteriorated that large vibration isolator rigidity improves track plates.Thus need a kind of anti-vibration performance good in engineering, the floating plate track vibration isolator that track plates vertical deviation is little.
Load on train effect and track vibration isolator shows as static load and dynamic load is superimposed, and static load is significantly greater than the feature of dynamic load.The static load of train is larger for the contribution amount of the vertical deviation of track plates.But the vibration characteristics of static load is more weak.A kind of vibration isolator with pre-pressing function can be designed based on this feature, balance a part of static load by precompression, reduce track plates vertical deviation.But can make between dynamic load work and vibration isolator elastic region, guarantee that vibration isolator has good dynamic isolation performance.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of prepressing type floating plate track vibration isolator, with effectively reduce train by time vibration isolator and the maximum vertical deviation of track plates, reduce the stress and strain of track plates, improve the stress condition of track plates.
It is as follows that the utility model solves this technical problem adopted technical scheme:
Prepressing type floating plate track vibration isolator of the present utility model, the elastic component comprising base, pre-cover clamp and be arranged between the two, it is characterized in that: between described base and pre-cover clamp, be also provided with prepressing device, this prepressing device acts on pre-cover clamp, acts on elastic component make it produce predetermined compression by pre-cover clamp.
Described base is also provided with the damping unit in parallel with elastic component.
The beneficial effects of the utility model are, utilize precompressed locking device to make flexible member just produce certain precompression when mounted, reduce train by time vibration isolator and the static displacement of track plates, improve the stressed of track plates; Under same load condition, the utility model, when obtaining identical vertical distortion with common vibration isolator, can adopt lower vertical stiffness, obtains better anti-vibration performance; Principle is simple, and additional structure is few, goes for different track plates structures and different environments for use.
Accompanying drawing explanation
This manual comprises following six width accompanying drawings:
Fig. 1 is the structural representation of the utility model prepressing type floating plate track vibration isolator embodiment 1;
Fig. 2 is the structural representation of the utility model prepressing type floating plate track vibration isolator embodiment 2;
Fig. 3 is the structural representation of the utility model prepressing type floating plate track vibration isolator embodiment 3;
Fig. 4 is the structural representation of the utility model prepressing type floating plate track vibration isolator embodiment 4;
Fig. 5 is the structural representation of the utility model prepressing type floating plate track vibration isolator embodiment 5;
Fig. 6 is the structural representation of the utility model prepressing type floating plate track vibration isolator embodiment 6;
Component name shown in figure and corresponding mark: base 10, viscoelastic damping medium 10a, resisting medium 10b, precompressed stud 11, precompressed nut 12, pre-cover clamp 13, piston rod 14, piston 15, elastic component 20, adjustment packing ring 30.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in detail.
With reference to Fig. 1, prepressing type floating plate track vibration isolator of the present utility model, the elastic component 20 comprising base 10, pre-cover clamp 13 and be arranged between the two.Also be provided with prepressing device between described base 10 and pre-cover clamp 13, this prepressing device acts on pre-cover clamp 13, acts on elastic component 20 make it produce predetermined compression by pre-cover clamp 13.With reference to Fig. 5 and Fig. 6, described base 10 also can arrange the damping unit acting on elastic component 20.The Main Function of flexible member 20 is for track plates and train provide support power, and isolates the vibration of track plates; The effect of prepressing device is when vibration isolator is installed, and makes it produce certain precompression and is locked by this pressure.The effect of damping unit is absorbing vibrational energy, decay track plates vibration amplitude.
Under the utility model is installed on floating plate track when reality uses, adjustment packing ring 30 is placed on pre-cover clamp 13, but does not contact with precompressed nut 12, and power is passed on adjustment packing ring 30 by outer sleeve by track plates.In vibration isolator installation process, each vibration isolator is balancing the load F of track plates itself
safter, then make elastic component 20 produce certain precompression F by precompressed nut 13
0.Assuming that the train static load acted on vibration isolator is F
l, dynamic load factor is γ, and the static vertical stiffness of vibration isolator is k
z, then vibration isolator precompression should meet following formula:
F
0<F
l(2-γ) (1)
When train is through having installed the floating plate track of vibration isolator, the track plates largest amount of subsidence caused by train comprises two parts, and a part is that train static load causes, and another part is that Train Dynamic load causes.The deflection that static load causes is comparatively large, but fluctuation is less.Dynamic load can make the deflection of track plates, around static deflection, certain fluctuation occur.For without pre-pressing function vibration isolator, the maximum vertical deviation d of the track plates that train causes and vibration isolator
nfor:
d
n＝γF
l/k
z(2)
For the utility model the utility model prepressing type floating plate track vibration isolator, the maximum vertical deviation d of the track plates caused by train and vibration isolator
scan be expressed as,
d
s＝(γF
l-F
0)/k
z(3)
From above formula, adopt the maximum vertical deviation d of floating plate track during prepressing type vibration isolator
sbe less than the floating plate track adopting common vibration isolator.
When train passes through, the static clearance d of the generation between the pre-cover clamp 13 of vibration isolator and precompressed nut 12
0for:
d
0＝(F
l-F
0)/k
z(4)
When not considering damping, train through time vibration isolator dynamic displacement undulate quantity d
tfor:
d
t＝(γ-1)F
l/k
z(5)
Obviously following formula is had under precompression meets the given condition of formula (1):
d
0>d
t(6)
The track plates vertical deviation that known load dynamic wave momentum causes fluctuates in the gap between pre-cover clamp 13 and precompressed nut 12, and pre-cover clamp 13 can not be made to come in contact with precompressed nut 12.Vibration isolator works in elastic range, can guarantee that prepressing type floating plate track vibration isolator and common floating plate track vibration isolator have identical anti-vibration performance.
In addition, because the utility model the utility model prepressing type floating plate track vibration isolator has pre-pressing function, thus can also by reducing vibration isolator rigidity k
z, reach and reduce floating plate system frequency, improve floating plate track anti-vibration performance further, but do not increase the object that track plates moves displacement.Its implementation is as follows: contrast (2) (3) are known, after the rigidity reducing vibration isolator flexible member, the static displacement of vibration isolator and dynamic displacement all will become greatly, and this is also the too low main cause that common vibration isolator rigidity can not be done.But the utility model can reduce the vertical deviation of vibration isolator under the effect of train load by promoting spring precompressed amount, thus achieve Low rigidity thin tail sheep.
Described prepressing device comprises precompressed stud 11 and precompressed nut 12, and the set-up mode of precompressed stud 11 can have various ways.With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, precompressed stud 11 is fixedly installed on the vertical centre of base 10, elastic component 20 is placed on this precompressed stud 11, the through hole at pre-cover clamp 13 center is passed on the top of precompressed stud 11, and the precompressed nut 12 screwed in precompressed stud 11 upper end acts on the upper surface of pre-cover clamp 13.With reference to Fig. 2, precompressed stud 11 is circumferentially arranged at intervals in the peripheral part of base 10, elastic component 20 is positioned in the space of each precompressed stud 11 restriction, the corresponding through hole of pre-cover clamp 13 periphery is passed on the top of each precompressed stud 11, and the precompressed nut 12 screwed in precompressed stud 11 upper end acts on the upper surface of pre-cover clamp 13.
As shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 6, described elastic component 20 can adopt Compress Spring.Also can adopt laminated rubber body as shown in Figure 3, laminated rubber body can improve the damping of vibration isolator, improves the anti-vibration performance of vibration isolator at low frequency region.Or adopt cone rubber body as shown in Figure 4, cone rubber body can make the lateral stiffness of vibration isolator increase, improve the lateral stability of track.
With reference to Fig. 5, described damping unit comprises the accommodation cavity be arranged on base 10 and the viscoelastic damping medium 10a injected in this accommodation cavity, the bottom of elastic component 20 is immersed in viscoelastic damping medium 10a, produces damping force by elastic component 20 disturbance viscoelastic damping medium 10a.
With reference to Fig. 6, described damping unit comprises the enclosed cavity be arranged on base 10 and the resisting medium 10b injected in this enclosed cavity, piston 15 is provided with in enclosed cavity, the two ends of piston rod 14 are fixedly connected with pre-cover clamp 13 with piston 15 respectively, produce damping force by piston 15 squeezed air-damping medium 10b.
Claims (7)
1. prepressing type floating plate track vibration isolator, the elastic component (20) comprising base (10), pre-cover clamp (13) and be arranged between the two, it is characterized in that: between described base (10) and pre-cover clamp (13), be also provided with prepressing device, this prepressing device acts on pre-cover clamp (13), acts on elastic component (20) make it produce predetermined compression by pre-cover clamp (13).
2. prepressing type floating plate track vibration isolator as claimed in claim 1, it is characterized in that: described prepressing device comprises precompressed stud (11) and precompressed nut (12), precompressed stud (11) is fixedly installed on base (10) vertical centre, and elastic component (20) is placed on this precompressed stud (11); The through hole at pre-cover clamp (13) center is passed on the top of precompressed stud (11), and the precompressed nut (12) screwed in precompressed stud (11) upper end acts on the upper surface of pre-cover clamp (13).
3. prepressing type floating plate track vibration isolator as claimed in claim 1, it is characterized in that: described prepressing device comprises precompressed stud (11) and precompressed nut (12), precompressed stud (11) is circumferentially arranged at intervals in the peripheral part of base (10), and elastic component (20) is positioned in the space that each precompressed stud (11) limits; The corresponding through hole of pre-cover clamp (13) periphery is passed on the top of each precompressed stud (11), and the precompressed nut (12) screwed in precompressed stud (11) upper end acts on the upper surface of pre-cover clamp (13).
4. prepressing type floating plate track vibration isolator as claimed in claim 1, is characterized in that: described elastic component (20) is Compress Spring, laminated rubber body or cone rubber body.
5. the prepressing type floating plate track vibration isolator as described in claim 1,2,3 or 4, is characterized in that: described base (10) also arranges the damping unit in parallel with elastic component (20).
6. prepressing type floating plate track vibration isolator as claimed in claim 5, it is characterized in that: described damping unit comprises the accommodation cavity be arranged on base (10) and the viscoelastic damping medium (10a) injected in this accommodation cavity, and the bottom of elastic component (20) is immersed in viscoelastic damping medium (10a).
7. prepressing type floating plate track vibration isolator as claimed in claim 5, it is characterized in that: described damping unit comprises the enclosed cavity be arranged on base (10) and the resisting medium (10b) injected in this enclosed cavity, be provided with piston (15) in enclosed cavity, the two ends of piston rod (14) are fixedly connected with pre-cover clamp (13) with piston (15) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420745254.1U CN204356597U (en) | 2014-12-02 | 2014-12-02 | Prepressing type floating plate track vibration isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420745254.1U CN204356597U (en) | 2014-12-02 | 2014-12-02 | Prepressing type floating plate track vibration isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204356597U true CN204356597U (en) | 2015-05-27 |
Family
ID=53258077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420745254.1U Expired - Fee Related CN204356597U (en) | 2014-12-02 | 2014-12-02 | Prepressing type floating plate track vibration isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204356597U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088903A (en) * | 2015-09-17 | 2015-11-25 | 成都明日星辰科技有限公司 | Railway track with damping shock absorption function |
| CN105114525A (en) * | 2015-09-17 | 2015-12-02 | 成都明日星辰科技有限公司 | Damping and shock absorption rail |
| CN105221651A (en) * | 2015-09-18 | 2016-01-06 | 成都明日星辰科技有限公司 | A kind of track damping shock absorption protector |
| CN105755910A (en) * | 2015-09-17 | 2016-07-13 | 成都明日星辰科技有限公司 | Railway track with oleo dampers |
| CN105755913A (en) * | 2015-09-17 | 2016-07-13 | 成都明日星辰科技有限公司 | Track damper |
| CN105755912A (en) * | 2015-09-17 | 2016-07-13 | 成都明日星辰科技有限公司 | Railway track provided with shock absorbers |
| CN105821722A (en) * | 2016-05-27 | 2016-08-03 | 江苏远兴环保科技有限公司 | Screw damper and floating slab track system and jacking device and method thereof |
| CN105840725A (en) * | 2016-05-27 | 2016-08-10 | 江苏远兴环保科技有限公司 | Screw vibration-reduction shock isolator |
| CN106894298A (en) * | 2017-01-10 | 2017-06-27 | 西南交通大学 | Floating plate track vibration isolator |
| CN108362421A (en) * | 2018-04-19 | 2018-08-03 | 上海瑞纽机械股份有限公司 | A kind of floating plate vibration isolator load-bearing monitor device |
| CN111120556A (en) * | 2019-12-30 | 2020-05-08 | 宁波市鄞州佳旭服饰有限公司 | Vibration isolation ring and vibration isolation spring in vibration isolator for floating slab track |
| CN111118975A (en) * | 2019-12-30 | 2020-05-08 | 宁波市鄞州佳旭服饰有限公司 | Vibration isolation ring and vibration isolation butterfly spring in vibration isolator for floating slab track |
-
2014
- 2014-12-02 CN CN201420745254.1U patent/CN204356597U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088903B (en) * | 2015-09-17 | 2017-01-11 | 成都明日星辰科技有限公司 | Railway track with damping shock absorption function |
| CN105114525B (en) * | 2015-09-17 | 2017-12-08 | 成都明日星辰科技有限公司 | A kind of damping shock absorption track |
| CN105755913A (en) * | 2015-09-17 | 2016-07-13 | 成都明日星辰科技有限公司 | Track damper |
| CN105755910A (en) * | 2015-09-17 | 2016-07-13 | 成都明日星辰科技有限公司 | Railway track with oleo dampers |
| CN105088903A (en) * | 2015-09-17 | 2015-11-25 | 成都明日星辰科技有限公司 | Railway track with damping shock absorption function |
| CN105755912A (en) * | 2015-09-17 | 2016-07-13 | 成都明日星辰科技有限公司 | Railway track provided with shock absorbers |
| CN105114525A (en) * | 2015-09-17 | 2015-12-02 | 成都明日星辰科技有限公司 | Damping and shock absorption rail |
| CN105221651A (en) * | 2015-09-18 | 2016-01-06 | 成都明日星辰科技有限公司 | A kind of track damping shock absorption protector |
| CN105821722A (en) * | 2016-05-27 | 2016-08-03 | 江苏远兴环保科技有限公司 | Screw damper and floating slab track system and jacking device and method thereof |
| CN105840725A (en) * | 2016-05-27 | 2016-08-10 | 江苏远兴环保科技有限公司 | Screw vibration-reduction shock isolator |
| CN106894298A (en) * | 2017-01-10 | 2017-06-27 | 西南交通大学 | Floating plate track vibration isolator |
| CN106894298B (en) * | 2017-01-10 | 2018-12-21 | 西南交通大学 | floating plate track vibration isolator |
| CN108362421A (en) * | 2018-04-19 | 2018-08-03 | 上海瑞纽机械股份有限公司 | A kind of floating plate vibration isolator load-bearing monitor device |
| CN108362421B (en) * | 2018-04-19 | 2024-04-23 | 上海瑞纽机械股份有限公司 | Stress monitoring device for floating plate vibration isolator |
| CN111120556A (en) * | 2019-12-30 | 2020-05-08 | 宁波市鄞州佳旭服饰有限公司 | Vibration isolation ring and vibration isolation spring in vibration isolator for floating slab track |
| CN111118975A (en) * | 2019-12-30 | 2020-05-08 | 宁波市鄞州佳旭服饰有限公司 | Vibration isolation ring and vibration isolation butterfly spring in vibration isolator for floating slab track |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |