CN215481990U - Novel urban rail transit composite vibration reduction system - Google Patents
Novel urban rail transit composite vibration reduction system Download PDFInfo
- Publication number
- CN215481990U CN215481990U CN202120792072.XU CN202120792072U CN215481990U CN 215481990 U CN215481990 U CN 215481990U CN 202120792072 U CN202120792072 U CN 202120792072U CN 215481990 U CN215481990 U CN 215481990U
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- Prior art keywords
- vibration damping
- block
- sleeper
- polyurethane curing
- curing block
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- 239000002131 composite material Substances 0.000 title claims abstract description 29
- 238000013016 damping Methods 0.000 claims abstract description 89
- 229920002635 polyurethane Polymers 0.000 claims abstract description 53
- 239000004814 polyurethane Substances 0.000 claims abstract description 53
- 241001669679 Eleotris Species 0.000 claims abstract description 35
- 238000009434 installation Methods 0.000 claims description 19
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005187 foaming Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 229920005830 Polyurethane Foam Polymers 0.000 abstract 1
- 238000004026 adhesive bonding Methods 0.000 abstract 1
- 239000011496 polyurethane foam Substances 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model relates to a novel urban rail transit composite vibration damping system which comprises a sleeper, a first vibration damping system and a second vibration damping system, wherein the first vibration damping system and the second vibration damping system are respectively arranged on the lower surfaces of two end parts of the sleeper; the first damping system comprises a first polyurethane curing block and a first damping cushion layer, the first damping cushion layer is arranged on the lower surface of the first polyurethane curing block, and the first polyurethane curing block is arranged on the lower surface of one end of the sleeper; the second damping system comprises a second polyurethane curing block and a second damping cushion layer, the second damping cushion layer is arranged on the lower surface of the second polyurethane curing block, and the second polyurethane curing block is arranged on the lower surface of the other end of the sleeper; the first polyurethane curing block and the first damping cushion layer, and the second polyurethane curing block and the second damping cushion layer are of an integrated structure. According to the utility model, the composite vibration damping structure system has good integrity, lighter weight, outstanding economical efficiency and obvious vibration damping effect by gluing the polyurethane foam with the vibration damping cushion layer in the process of foaming.
Description
Technical Field
The utility model relates to the field of rail engineering, in particular to a composite vibration damping system for rail transit.
Background
With the rapid development of rail transit in China, the problems of vibration and noise induced when a train runs are more and more prominent. When the train runs at a high speed, the track is induced to generate large vibration and noise, and meanwhile, the track vibration can react on the vehicle to cause the vehicle to vibrate. The vibration is a source of noise, and the purpose of reducing the noise can be achieved by reducing the vibration of the structure.
The existing structure of the sleeper of the main line railway has the problems of environmental vibration and noise pollution and poor integrity, and a novel urban rail transit composite vibration damping system is needed to solve the problems.
Disclosure of Invention
The utility model aims to solve the problems that the structure of the main line railway sleeper in the prior art has environmental vibration and noise pollution and poor integrity, provides a novel urban rail transit composite vibration damping system, and the composite vibration damping system is cemented with a vibration damping cushion layer in the polyurethane foaming process, so that the composite vibration damping structure system has good integrity, lighter weight, outstanding economy and obvious vibration damping effect, and solves the problems.
The utility model provides a novel urban rail transit composite vibration damping system which comprises a sleeper, a first vibration damping system and a second vibration damping system, wherein the first vibration damping system and the second vibration damping system are respectively arranged on the lower surfaces of two end parts of the sleeper; the first damping system comprises a first polyurethane curing block and a first damping cushion layer, the first damping cushion layer is arranged on the lower surface of the first polyurethane curing block, and the first polyurethane curing block is arranged on the lower surface of one end of the sleeper; the second damping system comprises a second polyurethane curing block and a second damping cushion layer, the second damping cushion layer is arranged on the lower surface of the second polyurethane curing block, and the second polyurethane curing block is arranged on the lower surface of the other end of the sleeper; the first polyurethane curing block and the first damping cushion layer are of an integrated structure; the second polyurethane curing block and the second damping cushion layer are of an integrated structure.
The composite damping structure system has the advantages that the polyurethane blocks are poured before the sleeper for urban rail transit leaves a factory and are glued with the damping cushion layer in the polyurethane foaming process, so that the composite damping structure system has good integrity, and the problems of falling, separation and dislocation of the polyurethane blocks and the damping cushion layer are solved well.
According to the novel urban rail transit composite vibration damping system, as a preferable mode, the vertical projection area of the first polyurethane curing block is smaller than that of the first vibration damping cushion layer.
According to the novel urban rail transit composite vibration damping system, as a preferable mode, the vertical projection area of the second polyurethane curing block is smaller than that of the second vibration damping cushion layer.
According to the novel urban rail transit composite vibration damping system, as a preferable mode, the first polyurethane curing block comprises a first curing block body and a first curing block track bed installation groove, the first curing block body is of a straight quadrangular prism structure, the first curing block track bed installation groove is of a rectangular groove structure communicated with one side, the first curing block track bed installation groove is formed in two adjacent surfaces of the first curing block body, and the side surface and the bottom surface of one end of a sleeper are arranged in the first curing track bed installation groove.
According to the novel urban rail transit composite vibration damping system, as a preferable mode, the second polyurethane curing block comprises a second curing block body and a second curing block track bed installation groove, the second curing block body is of a straight quadrangular prism structure, the second curing block track bed installation groove is of a rectangular groove structure communicated with one side, the second curing block track bed installation groove is formed in two adjacent surfaces of the second curing block body, and the side surface and the bottom surface of one end of the sleeper are arranged in the second curing track bed installation groove.
The sleeper has a length of 2195-2205 mm, a width of 255-265 mm and a height of 157-177 mm. Compared with the main line railway sleeper with the length of 2600mm, the width of 320mm and the height of 260mm, the sleeper is optimized, and the length of the sleeper used for urban rail transit is reduced by 400mm relative to the length of the main line railway sleeper. The sleeper is lighter and is beneficial to the laying and construction of the track. Correspondingly, the volume, the length, the width and the height of the polyurethane block are all reduced, the laying cost is reduced, and the economy is outstanding.
The utility model has the following beneficial effects:
compared with the structure of a main railway sleeper, the novel urban rail transit composite vibration damping system is lighter in weight, outstanding in economy and obvious in vibration damping effect. The environmental vibration and noise pollution generated in the running of the urban rail transit train are effectively reduced. The vibration radiation sound wave generated when the wheel contacts with the rail is weakened. The comfort of passengers of the urban rail transit train when taking the train and the environmental quality of life of surrounding residents are powerfully guaranteed.
Drawings
FIG. 1 is a schematic diagram of a novel urban rail transit composite damping system;
FIG. 2 is a schematic view of a first damping system of a novel urban rail transit composite damping system;
FIG. 3 is a schematic view of a second damping system of a novel urban rail transit composite damping system;
FIG. 4 is a schematic view of a first polyurethane curing block of the novel urban rail transit composite damping system;
FIG. 5 is a schematic view of a second polyurethane curing block of a novel urban rail transit composite damping system.
Reference numerals:
1. a sleeper; 2. a first damping system; 21. a first polyurethane cured block; 211. a first solidified block body; 212. a first solidified block ballast bed mounting groove; 22. a first vibration damping cushion layer; 3. a second damping system; 31. a second polyurethane cured mass; 311. a second solidified block body; 312. a second solidified block ballast bed mounting groove; 32. and a second damping cushion layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
As shown in figure 1, the novel urban rail transit composite damping system comprises a sleeper 1, a first damping system 2 and a second damping system 3, wherein the first damping system 2 and the second damping system 3 are respectively arranged on the lower surfaces of two end portions of the sleeper 1. The sleeper 1 has a length of 2195-2205 mm, a width of 255-265 mm and a height of 157-177 mm.
As shown in fig. 2, the first damping system 2 includes a first polyurethane cured block 21 and a first damping pad layer 22, the first damping pad layer 22 is disposed on a lower surface of the first polyurethane cured block 21, and the first polyurethane cured block 21 is disposed on a lower surface of one end of the sleeper 1.
As shown in fig. 3, the second damping system 3 includes a second polyurethane curing block 31 and a second damping pad layer 32, the second damping pad layer 32 is disposed on the lower surface of the second polyurethane curing block 31, and the second polyurethane curing block 31 is disposed on the lower surface of the other end of the sleeper 1; the first polyurethane curing block 21 and the first damping cushion layer 22 are of an integrated structure; the second polyurethane cured block 31 and the second cushion layer 32 are of an integrated structure.
The vertical projected area of the first polyurethane cured block 21 is smaller than the vertical projected area of the first vibration damping cushion layer 22.
The vertical projected area of the second solidified polyurethane block 31 is smaller than the vertical projected area of the second cushion layer 32.
As shown in fig. 4, the first polyurethane curing block 21 includes a first curing block body 211 and a first curing block track bed installation groove 212, the first curing block body 211 is a straight quadrangular prism structure, the first curing block track bed installation groove 212 is a rectangular groove structure with one side penetrating, the first curing block track bed installation groove 212 is grooved on two adjacent surfaces of the first curing block body 211, and one end side surface and the bottom surface of the sleeper 1 are arranged inside the first curing block track bed installation groove 212.
As shown in fig. 5, the second polyurethane curing block 31 includes a second curing block body 311 and a second curing block track bed mounting groove 312, the second curing block body 311 is a straight quadrangular prism structure, the second curing block track bed mounting groove 312 is a rectangular groove structure with one side penetrating, the second curing block track bed mounting groove 312 is grooved on two adjacent surfaces of the second curing block body 311, and the side surface and the bottom surface of one end of the sleeper 1 are arranged inside the second curing block track bed mounting groove 312.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120792072.XU CN215481990U (en) | 2021-04-16 | 2021-04-16 | Novel urban rail transit composite vibration reduction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120792072.XU CN215481990U (en) | 2021-04-16 | 2021-04-16 | Novel urban rail transit composite vibration reduction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215481990U true CN215481990U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120792072.XU Active CN215481990U (en) | 2021-04-16 | 2021-04-16 | Novel urban rail transit composite vibration reduction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215481990U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116145476A (en) * | 2023-02-15 | 2023-05-23 | 北京铁科首钢轨道技术股份有限公司 | Polyurethane elastic ballast bed block, assembled ballast bed and assembling method thereof |
-
2021
- 2021-04-16 CN CN202120792072.XU patent/CN215481990U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116145476A (en) * | 2023-02-15 | 2023-05-23 | 北京铁科首钢轨道技术股份有限公司 | Polyurethane elastic ballast bed block, assembled ballast bed and assembling method thereof |
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