CN205276060U - Multistage vibration damping's embedded track system - Google Patents
Multistage vibration damping's embedded track system Download PDFInfo
- Publication number
- CN205276060U CN205276060U CN201521110968.6U CN201521110968U CN205276060U CN 205276060 U CN205276060 U CN 205276060U CN 201521110968 U CN201521110968 U CN 201521110968U CN 205276060 U CN205276060 U CN 205276060U
- Authority
- CN
- China
- Prior art keywords
- vibration damping
- damping layer
- rail
- support groove
- rail support
- 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 discloses a multistage vibration damping's embedded track system, the embedded track system includes rail, a damping layer, support rail groove, concrete base and concrete supporting layer, the rail embedding is in support rail groove, a damping layer sets up between rail and support rail groove, the concrete base sets up in support rail groove's below and supports support rail groove, the concrete supporting layer sets up in the below of concrete base, wherein, the embedded track system is still including setting up the 2nd damping layer and/or setting between support rail groove and the concrete base are in the 3rd damping layer between concrete base and the concrete supporting layer. The utility model discloses an all or part adopt elastic connection and set up damping layer between support rail groove and concrete base and concrete base and concrete supporting layer to the downward transmission of the external disturbance that can attenuate step by step power, damping the noise reduction effect is more excellent.
Description
Technical field
This utility model relates to embedded tracks technical field, more particularly, relates to the embedded tracks system of a kind of multistage detection.
Background technology
Existing embedded tracks system structure is that rail is embedded in rail support groove, and rail support groove adopts concrete bottom seat supports, and concrete bed divides into concrete support layer, is roadbed under concrete support layer. Wherein, adopt elasticity to be connected between rail with rail support groove, be between remaining rail support groove and concrete bed, between concrete bed and concrete support layer and be rigidly connected.
But, above-mentioned embedded tracks system is in use, directly act on the external interference power of Rail Surface along track longitudinally, laterally, in the process of vertical transmission, its perturbed force frequency is also gradually reduced, general action is 100��1000HZ in the external interference power frequency of Rail Surface, even higher, and it is transferred to the perturbed force frequency of concrete support layer for being generally 30��100HZ, even lower. That is, this rail system energy effective attenuation acts on the external interference power of Rail Surface, but the external interference power continuing going down can not limited be decayed.
Utility model content
In order to solve problems of the prior art, the purpose of this utility model is to provide a kind of embedded tracks system comparing one-level vibration damping and has the multistage detection embedded tracks system of effect of vibration and noise reduction more preferably.
This utility model provides the embedded tracks system of a kind of multistage detection, described embedded tracks system includes rail, first vibration damping layer, rail support groove, concrete bed and concrete support layer, described rail is embedded in rail support groove, described first vibration damping layer is arranged between rail and rail support groove, described concrete bed is arranged on the lower section of rail support groove and supports described rail support groove, described concrete support layer is arranged on the lower section of concrete bed, wherein, described embedded tracks system also includes the second vibration damping layer being arranged between described rail support groove and concrete bed and/or the 3rd vibration damping layer being arranged between described concrete bed and concrete support layer.
One embodiment of the embedded tracks system according to this utility model multistage detection, described embedded tracks system also includes the continuous laying resilient sleeper-bearing at described rail foot surface.
One embodiment of the embedded tracks system according to this utility model multistage detection, described first vibration damping layer is macromolecular elastomer and described first vibration damping layer adopts without the structure of noise reduction block, wherein, rail and resilient sleeper-bearing entirety are wrapped up and are embedded in rail support groove by described first vibration damping layer.
One embodiment of the embedded tracks system according to this utility model multistage detection, described first vibration damping layer is macromolecular elastomer and the described first vibration damping layer employing structure with noise reduction block, described noise reduction block is fixed on two sides of rail, wherein, rail, resilient sleeper-bearing and noise reduction block entirety are wrapped up and are embedded in rail support groove by described first vibration damping layer.
One embodiment of the embedded tracks system according to this utility model multistage detection, described second vibration damping layer continuous laying is on the side that the bottom surface of rail support groove and rail support groove contact with concrete bed.
One embodiment of the embedded tracks system according to this utility model multistage detection, described 3rd vibration damping layer is laid on the bottom surface of concrete bed continuously and completely.
One embodiment of the embedded tracks system according to this utility model multistage detection, described 3rd vibration damping layer is continuously or discontinuously layed in the bottom surface of concrete bed along rail support groove centrage, and described 3rd vibration damping layer includes two row corresponding with described rail support groove.
One embodiment of the embedded tracks system according to this utility model multistage detection, the wide 10��20cm of width of rail support groove described in the laying width ratio of each column the 3rd vibration damping layer.
One embodiment of the embedded tracks system according to this utility model multistage detection, described 3rd vibration damping layer adopts the corner place that imitative bridge pad form is supported in concrete bed bottom surface.
One embodiment of the embedded tracks system according to this utility model multistage detection, the rigidity of described first vibration damping layer is 30��120KN/mm, the rigidity of described second vibration damping layer is lower than the rigidity of the first vibration damping layer, and the rigidity of described 3rd vibration damping layer is lower than the rigidity of the second vibration damping layer.
Compared with prior art, multistage detection embedded tracks system of the present utility model is compared to existing one-level vibration damping embedded tracks system, it is connected in rail support groove employing elasticity all or part of with concrete support interlayer with concrete bed and concrete bed and arranges vibration damping layer, the characteristic that vibration damping layer is gradually lowered at transmittance process medium frequency according to external interference power adopts different rigidity, the going down of external interference power it is thus possible to decay step by step, effect of vibration and noise reduction is more excellent.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first structure of the first vibration damping layer in this utility model.
Fig. 2 is the structural representation of the second structure of the first vibration damping layer in this utility model.
Fig. 3 is the structural representation of the third structure of the first vibration damping layer in this utility model.
Fig. 4 A is the main TV structure schematic diagram of the first structure of the 3rd vibration damping layer in this utility model; Fig. 4 B is the side-looking structural representation of the first structure of the 3rd vibration damping layer in this utility model.
Fig. 5 A is the main TV structure schematic diagram of the second structure of the 3rd vibration damping layer in this utility model; Fig. 5 B is the side-looking structural representation of the second structure of the 3rd vibration damping layer in this utility model.
Fig. 6 A is the main TV structure schematic diagram of the third structure of the 3rd vibration damping layer in this utility model; Fig. 6 B is the side-looking structural representation of the third structure of the 3rd vibration damping layer in this utility model.
Fig. 7 A is the main TV structure schematic diagram of the 4th kind of structure of the 3rd vibration damping layer in this utility model; Fig. 7 B is the side-looking structural representation of the 4th kind of structure of the 3rd vibration damping layer in this utility model.
Fig. 8 is the structural representation of the first structure of the embedded tracks system of multistage detection in example 1.
Fig. 9 is the structural representation of the second structure of the embedded tracks system of multistage detection in example 1.
Figure 10 is the structural representation of the third structure of the embedded tracks system of multistage detection in example 1.
Figure 11 is the structural representation of the first structure of the embedded tracks system of multistage detection in example 2.
Figure 12 is the structural representation of the second structure of the embedded tracks system of multistage detection in example 2.
Figure 13 is the structural representation of the first structure of the embedded tracks system of multistage detection in example 3.
Description of reference numerals:
1-rail, 2-the first vibration damping layer, 3-rail support groove, 4-the second vibration damping layer, 5-concrete bed, 6-the 3rd vibration damping layer, 7-concrete support layer, 8-resilient sleeper-bearing, 9-noise reduction block, 10-rail support groove centrage.
Detailed description of the invention
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
This specification (include any accessory claim, summary and accompanying drawing) disclosed in any feature, unless specifically stated otherwise, all can by other equivalences or there is the alternative features of similar purpose replaced. That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
Below the structure of the embedded tracks system to this utility model multistage detection and principle are described in detail.
Specifically, thinking of the present utility model is to adopt elastic connection way between rail support groove 3 and concrete bed 5, between concrete bed 5 and concrete support layer 7 whole or in part and arrange vibration damping layer, and make different vibration damping layers adopt different rigidity according to external interference power in the characteristic that transmittance process medium frequency is gradually lowered, thus realizing the technique effect of the going down of decay external interference power step by step, make effect of vibration and noise reduction more excellent.
According to exemplary embodiment of the present utility model, the embedded tracks system of described multistage detection includes rail 1, first vibration damping layer 2, rail support groove 3, concrete bed 5 and concrete support layer 7, rail 1 is embedded in rail support groove 3, first vibration damping layer 2 is arranged between rail 1 and rail support groove 3, concrete bed 5 is arranged on the lower section of rail support groove 3 and supports rail support groove 3, concrete support layer 7 is arranged on the lower section of concrete bed 5, wherein, the second vibration damping layer 4 that embedded tracks system also includes being arranged between rail support groove 3 and concrete bed 5 and/or be arranged on the 3rd vibration damping layer 6 between concrete bed and 5 concrete support layers 7.
When this embedded tracks system only includes the first vibration damping layer 2 and the second vibration damping layer 4 or only includes the first vibration damping layer 2 and the 3rd vibration damping layer 6, then constitute the embedded tracks system of two grades of vibration dampings; When including first vibration damping layer the 2, second vibration damping layer 4 and the 3rd vibration damping layer 6 when this embedded tracks system simultaneously, then constitute the embedded tracks system of three grades of vibration dampings, specifically can configure according to actual condition.
Below first vibration damping layer the 2, second vibration damping layer 4 in this utility model and the 3rd vibration damping layer 6 are specifically described.
Fig. 1 is the structural representation of the first structure of the first vibration damping layer in this utility model, and Fig. 2 is the structural representation of the second structure of the first vibration damping layer in this utility model, and Fig. 3 is the structural representation of the third structure of the first vibration damping layer in this utility model.
According to exemplary embodiment of the present utility model, embedded tracks system of the present utility model also includes the continuous laying resilient sleeper-bearing 8 in rail 1 bottom surface. Specifically, as shown in Figure 1 to Figure 2, the first vibration damping layer 2 is macromolecular elastomer and this first vibration damping layer 2 adopts the structure without noise reduction block 9, and wherein, the first vibration damping layer 2 is by overall to rail 1 and resilient sleeper-bearing 8 parcel and is embedded in rail support groove 3. As shown in Figure 3, first vibration damping layer 2 is similarly macromolecular elastomer and this first vibration damping layer adopts the structure with noise reduction block 9, noise reduction block 9 is fixed on two sides of rail 1, fix for example with the mode pasted, wherein, the first vibration damping layer 2 by overall to rail 1, resilient sleeper-bearing 8 and noise reduction block 9 parcel and is embedded in rail support groove 3. Said structure.
Further, the rigidity of the first vibration damping layer 2 is preferably the higher stiffness of 30��120KN/mm such that it is able to effective attenuation acts on the external interference power on rail 1 surface.
According to this utility model, the second vibration damping layer 4 continuous laying is on the side that the bottom surface of rail support groove 3 and rail support groove 3 contact with concrete bed 5, to realize vibration and noise reducing on the whole. Preferably, the rigidity of the second vibration damping layer 4 is less than the rigidity of the first vibration damping layer 2 such that it is able to effective attenuation is transferred to the external interference power that frequency herein is relatively low.
Fig. 4 A is the main TV structure schematic diagram of the first structure of the 3rd vibration damping layer in this utility model, and Fig. 4 B is the side-looking structural representation of the first structure of the 3rd vibration damping layer in this utility model; Fig. 5 A is the main TV structure schematic diagram of the second structure of the 3rd vibration damping layer in this utility model, and Fig. 5 B is the side-looking structural representation of the second structure of the 3rd vibration damping layer in this utility model; Fig. 6 A is the main TV structure schematic diagram of the third structure of the 3rd vibration damping layer in this utility model, and Fig. 6 B is the side-looking structural representation of the third structure of the 3rd vibration damping layer in this utility model.
According to this utility model, as shown in Figure 4 A and 4 B shown in FIG., the 3rd vibration damping layer 6 can adopt continuously and completely be laid on the version of the bottom surface of concrete bed 5. As shown in Fig. 5 A, Fig. 5 B, Fig. 6 A and Fig. 6 B, 3rd vibration damping layer 6 can adopt the version of the bottom surface being continuously or discontinuously layed in concrete bed 5 along rail support groove centrage 10, and the 3rd vibration damping layer 6 includes two row corresponding with rail support groove 3, namely now the 3rd vibration damping layer 6 is not full paving state, but lay only along rail support groove centrage 10, and paving mode can be continuation mode or discontinuous manner. Preferably, the wide 10��20cm of width laying width ratio rail support groove 3 of each column the 3rd vibration damping layer 6. As shown in figures 7 a and 7b, the 3rd vibration damping layer 6 can also adopt imitative bridge pad form to be supported in the corner of 5 bottom surfaces at the bottom of concrete pad, and at the bottom of now selected concrete pad, 5 are the support style of imitative bridge. Preferably, the rigidity of the 3rd vibration damping layer 6 is lower than the rigidity of the second vibration damping layer 4, namely the rigidity of the 3rd vibration damping layer 6 is minimum, it is thus possible to effective attenuation is transferred to the external interference power of low frequency herein.
Below in conjunction with example, the embedded tracks system of this utility model multistage detection is described further.
Example 1:
Fig. 8 is the structural representation of the first structure of the embedded tracks system of multistage detection in example 1.
As shown in Figure 8, the embedded tracks system of this multistage detection includes drawing together rail the 1, first vibration damping layer 2, rail support groove 3, concrete bed the 5, the 3rd vibration damping layer 6, concrete support layer 7 and resilient sleeper-bearing 8, rail 1 is embedded in rail support groove 3, first vibration damping layer 2 is arranged between rail 1 and rail support groove 3, concrete bed 5 is arranged on the lower section of rail support groove 3 and supports rail support groove 3, concrete support layer 7 is arranged on the lower section of concrete bed 5,3rd vibration damping layer 6 is arranged between concrete bed and 5 concrete support layers 7, and resilient sleeper-bearing 8 continuous laying is in rail 1 bottom surface.
Wherein, between rail support groove 3 and concrete bed 5, employing is rigidly connected; Rail support groove 3 can disposable with concrete bed 5 integral prefabricated or cast-in-place molding, it is possible to individually pre-formed then cast-in-place concrete base 5; First vibration damping layer 2 can adopt any structure shown in Fig. 1 to Fig. 3, both can include noise reduction block 9, it is possible to do not include noise reduction block 9; 3rd vibration damping layer 6 can adopt any structure shown in Fig. 4 A to Fig. 7 B. Said structure is not specifically limited at this, it is possible to select according to operating mode.
Additionally, the structural representation of the second structure of the embedded tracks system that Fig. 9 is multistage detection in example 1, Figure 10 is the structural representation of the third structure of the embedded tracks system of multistage detection in example 1. Wherein, in Fig. 8 to Figure 10, the difference of three kinds of versions is only embodied in the difference of the structure of rail support groove 3 and concrete bed 5, does not repeat at this.
Example 2:
Figure 11 is the structural representation of the first structure of the embedded tracks system of multistage detection in example 2.
As shown in figure 11, the embedded tracks system of this multistage detection includes drawing together rail the 1, first vibration damping layer 2, rail support groove the 3, second vibration damping layer 4, concrete bed 5, concrete support layer 7 and resilient sleeper-bearing 8, rail 1 is embedded in rail support groove 3, first vibration damping layer 2 is arranged between rail 1 and rail support groove 3, concrete bed 5 is arranged on the lower section of rail support groove 3 and supports rail support groove 3, concrete support layer 7 is arranged on the lower section of concrete bed 5, second vibration damping layer 4 is arranged between rail support groove 3 and concrete bed 5, and resilient sleeper-bearing 8 continuous laying is in rail 1 bottom surface.
Wherein, self-compacting concrete is adopted to fill between concrete bed 5 and concrete support layer 7, for being rigidly connected; Rail support groove 3 adopts the mode of independent pre-formed rear cast-in-place concrete base 5; First vibration damping layer 2 can adopt any structure shown in Fig. 1 to Fig. 3, both can include noise reduction block 9, it is possible to do not include noise reduction block 9; Second vibration damping layer 4 continuous laying is on the side that the bottom surface of rail support groove 3 and rail support groove 3 contact with concrete bed 5. Said structure is not specifically limited at this, it is possible to select according to operating mode.
Additionally, the structural representation of the second structure of the embedded tracks system that Figure 12 is multistage detection in example 2. Wherein, in Figure 12 and Figure 11, the difference of two kinds of versions is only embodied in the different of the structure of rail support groove 3 and concrete bed 5, does not repeat at this.
Example 3:
Figure 13 is the structural representation of the first structure of the embedded tracks system of multistage detection in example 3.
As shown in figure 13, the embedded tracks system of this multistage detection includes drawing together rail 1, first vibration damping layer 2, rail support groove 3, second vibration damping layer 4, concrete bed 5, 3rd vibration damping layer 6, concrete support layer 7 and resilient sleeper-bearing 8, rail 1 is embedded in rail support groove 3, first vibration damping layer 2 is arranged between rail 1 and rail support groove 3, concrete bed 5 is arranged on the lower section of rail support groove 3 and supports rail support groove 3, concrete support layer 7 is arranged on the lower section of concrete bed 5, second vibration damping layer 4 is arranged between rail support groove 3 and concrete bed 5, 3rd vibration damping layer 6 is arranged between concrete bed and 5 concrete support layers 7, resilient sleeper-bearing 8 continuous laying is in rail 1 bottom surface.
Wherein, rail support groove 3 adopts the mode of independent pre-formed rear cast-in-place concrete base 5; First vibration damping layer 2 can adopt any structure shown in Fig. 1 to Fig. 3, both can include noise reduction block 9, it is possible to do not include noise reduction block 9; Second vibration damping layer 4 continuous laying is on the side that the bottom surface of rail support groove 3 and rail support groove 3 contact with concrete bed 5; 3rd vibration damping layer 6 can adopt any structure shown in Fig. 4 A to Fig. 7 B. Said structure is not specifically limited at this, it is possible to select according to operating mode.
Therefore, multistage detection embedded tracks system of the present utility model is compared to existing one-level vibration damping embedded tracks system, it is connected in rail support groove employing elasticity all or part of with concrete support interlayer with concrete bed and concrete bed and arranges vibration damping layer, the characteristic that vibration damping layer is gradually lowered at transmittance process medium frequency according to external interference power adopts different rigidity, the going down of external interference power it is thus possible to decay step by step, effect of vibration and noise reduction is more excellent.
This utility model is not limited to aforesaid detailed description of the invention. This utility model expands to any new feature disclosed in this manual or any new combination, and the step of the arbitrary new method disclosed or process or any new combination.
Claims (10)
1. the embedded tracks system of a multistage detection, it is characterized in that, described embedded tracks system includes rail, first vibration damping layer, rail support groove, concrete bed and concrete support layer, described rail is embedded in rail support groove, described first vibration damping layer is arranged between rail and rail support groove, described concrete bed is arranged on the lower section of rail support groove and supports described rail support groove, described concrete support layer is arranged on the lower section of concrete bed, wherein, described embedded tracks system also includes the second vibration damping layer being arranged between described rail support groove and concrete bed and/or the 3rd vibration damping layer being arranged between described concrete bed and concrete support layer.
2. the embedded tracks system of multistage detection according to claim 1, it is characterised in that described embedded tracks system also includes the continuous laying resilient sleeper-bearing at described rail foot surface.
3. the embedded tracks system of multistage detection according to claim 2, it is characterized in that, described first vibration damping layer is macromolecular elastomer and described first vibration damping layer adopts without the structure of noise reduction block, wherein, rail and resilient sleeper-bearing entirety are wrapped up and are embedded in rail support groove by described first vibration damping layer.
4. the embedded tracks system of multistage detection according to claim 2, it is characterized in that, described first vibration damping layer is macromolecular elastomer and the described first vibration damping layer employing structure with noise reduction block, described noise reduction block is fixed on two sides of rail, wherein, rail, resilient sleeper-bearing and noise reduction block entirety are wrapped up and are embedded in rail support groove by described first vibration damping layer.
5. the embedded tracks system of multistage detection according to claim 1, it is characterised in that described second vibration damping layer continuous laying is on the side that the bottom surface of rail support groove and rail support groove contact with concrete bed.
6. the embedded tracks system of multistage detection according to claim 1, it is characterised in that described 3rd vibration damping layer is laid on the bottom surface of concrete bed continuously and completely.
7. the embedded tracks system of multistage detection according to claim 1, it is characterized in that, described 3rd vibration damping layer is continuously or discontinuously layed in the bottom surface of concrete bed along rail support groove centrage, and described 3rd vibration damping layer includes two row corresponding with described rail support groove.
8. the embedded tracks system of multistage detection according to claim 7, it is characterised in that the wide 10��20cm of width of rail support groove described in the laying width ratio of each column the 3rd vibration damping layer.
9. the embedded tracks system of multistage detection according to claim 1, it is characterised in that described 3rd vibration damping layer adopts the corner place that imitative bridge pad form is supported in concrete bed bottom surface.
10. the embedded tracks system of multistage detection according to claim 1, it is characterized in that, the rigidity of described first vibration damping layer is 30��120KN/mm, and the rigidity of described second vibration damping layer is lower than the rigidity of the first vibration damping layer, and the rigidity of described 3rd vibration damping layer is lower than the rigidity of the second vibration damping layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521110968.6U CN205276060U (en) | 2015-12-29 | 2015-12-29 | Multistage vibration damping's embedded track system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521110968.6U CN205276060U (en) | 2015-12-29 | 2015-12-29 | Multistage vibration damping's embedded track system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205276060U true CN205276060U (en) | 2016-06-01 |
Family
ID=56060644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521110968.6U Active CN205276060U (en) | 2015-12-29 | 2015-12-29 | Multistage vibration damping's embedded track system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205276060U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421163A (en) * | 2015-12-29 | 2016-03-23 | 成都市新筑路桥机械股份有限公司 | Multistage damping embedded track system |
| CN106522036A (en) * | 2016-12-30 | 2017-03-22 | 和振兴 | Adjustable type ballastless track structure, ballastless track and adjustment method |
-
2015
- 2015-12-29 CN CN201521110968.6U patent/CN205276060U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421163A (en) * | 2015-12-29 | 2016-03-23 | 成都市新筑路桥机械股份有限公司 | Multistage damping embedded track system |
| CN106522036A (en) * | 2016-12-30 | 2017-03-22 | 和振兴 | Adjustable type ballastless track structure, ballastless track and adjustment method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205276060U (en) | Multistage vibration damping's embedded track system | |
| MX2010008342A (en) | Absorbent article. | |
| Jones et al. | Extended validation of a theoretical model for railway rolling noise using novel wheel and track designs | |
| CN106522036A (en) | Adjustable type ballastless track structure, ballastless track and adjustment method | |
| CN105421163B (en) | Multistage damping embedded track system | |
| CN205557316U (en) | Shock -absorbing bridge support | |
| CN204662850U (en) | A kind of composite floor board | |
| CN103452014B (en) | Tram absorbing noise elimination structure | |
| CN203001768U (en) | Combined yoga mat | |
| CN206359836U (en) | Adjustable ballastless track structure and non-fragment orbit | |
| CN105435415A (en) | Buffering pad for sports | |
| CN206538643U (en) | A kind of track vibration damping denoising Compound rubber backing plate | |
| CN203341374U (en) | Multifunctional sponge massage mattress | |
| CN205077338U (en) | Elastic cushion plate under iron cushion plate | |
| CN201912700U (en) | Shock absorption mechanism of treadmill | |
| CN205636377U (en) | Railway roadbed abatvoix | |
| JP2009293248A (en) | Sound insulation member for road bridge | |
| WO2014045069A1 (en) | Railway track structure from prefabricated units and construction procedure | |
| CN203420186U (en) | Vibration-absorption and noise-elimination structure for tramcar | |
| BE1020231A3 (en) | ELASTIC SOLE AND CROSS-SLEEP ON WHICH RAIL BARS REST ON A BALLAST BED. | |
| CN204982561U (en) | A cushion with have a tiny fragments of stone, coal, etc. track for having tiny fragments of stone, coal, etc. track sleeper | |
| CN210520554U (en) | Convertible type sofa of callus on sole handrail | |
| CN203168788U (en) | High-comfort carpet rubber mat | |
| CN203986384U (en) | Shoe-pad | |
| CN204336381U (en) | A kind of mattress preventing flank pain |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |