CN210031356U - Polyurethane micropore elastic track backing plate - Google Patents
Polyurethane micropore elastic track backing plate Download PDFInfo
- Publication number
- CN210031356U CN210031356U CN201920113413.9U CN201920113413U CN210031356U CN 210031356 U CN210031356 U CN 210031356U CN 201920113413 U CN201920113413 U CN 201920113413U CN 210031356 U CN210031356 U CN 210031356U
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- China
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- layer
- polyurethane
- track pad
- elastomeric track
- microporous elastomeric
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- Expired - Fee Related
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Abstract
The utility model discloses a polyurethane micropore elastic track backing plate, which comprises a foamed polyurethane layer, wherein a plurality of micropore bubbles are arranged in the foamed polyurethane layer; at least one layer of fiber supporting net is arranged in the polyurethane layer; a pressure bearing layer is arranged below the foamed polyurethane layer, the pressure bearing layer is a polyurethane elastomer, and at least one layer of steel wire supporting net is arranged in the polyurethane elastomer; the utility model has the advantages that: simple structure, intensity is high, and damping noise reduction effect is good, long service life.
Description
Technical Field
The utility model relates to a track backing plate, specifically speaking are polyurethane micropore elasticity track backing plate belongs to track backing plate field.
Background
Rail transit (rail transport) is a land transportation mode in which a locomotive pulls a train vehicle on two parallel rails. Controlling rail traffic noise and vibration is an important issue for improving passenger comfort and environmental protection. A number of studies have shown that the track structure is an important factor in causing vibration and noise. In order to control vibration and noise, it is common in the prior art to provide rubber pads under the rails. The Chinese invention patent named as 'railway track rubber shock pad' with the application number of '201810869047. X' discloses a railway track rubber shock pad, which comprises a grid framework bonding layer, a trapezoidal rubber balance buffer layer and a multi-layer pressure-bearing rigid damping core rubber layer arranged between the grid framework bonding layer and the trapezoidal rubber balance buffer layer; the outer side of the trapezoidal rubber balance buffer layer is provided with a group of trapezoidal strips which are distributed at intervals; fiber supporting nets are arranged between the pressure-bearing rigid damping core adhesive layer adjacent to the trapezoidal rubber balance buffer layer and the trapezoidal rubber balance buffer layer, between the pressure-bearing rigid damping core adhesive layer adjacent to the grid framework adhesive layer and the grid framework adhesive layer, and between the two adjacent pressure-bearing rigid damping core adhesive layers. However, the product has low structural strength and short service life.
Disclosure of Invention
In order to solve the problem, the utility model discloses a polyurethane micropore elasticity track backing plate, simple structure, intensity is high, and the damping noise reduction effect is good, long service life.
The technical scheme of the utility model is that:
a polyurethane micropore elastic track base plate comprises a foamed polyurethane layer, wherein a plurality of micropore bubbles are arranged in the foamed polyurethane layer, so that the buffering effect is improved, and the noise reduction effect is good; the polyurethane layer is internally provided with at least one layer of fiber supporting net, so that the structural strength of the product is improved while the buffering effect is improved, the product is not easy to deform and has good oxidation resistance, the damage is avoided, and the service life is prolonged; the fiber support net is preferably 2-3 layers; the foaming polyurethane layer's below is equipped with the bearing layer, the bearing layer is the polyurethane elastomer, be equipped with at least one deck steel wire support network in the polyurethane elastomer, improved the structural strength of product.
The fiber support net is formed by vertically interweaving polyester and steel wires serving as warps and wefts respectively, wherein the warp density and the weft density are both 1-5 mm, and the wire diameter is both 0.3-0.8 mm.
The aperture of the micropore bubble is 1-2 mm, so that the micropore bubble has a buffering effect and a good sound absorption effect.
The polyurethane hot melt adhesive is arranged between the foaming polyurethane and the pressure-bearing layer, is a urethane prepolymer containing a certain amount of free NCO groups, can be quickly bonded, can reach a certain physical bonding strength after being heated and cooled, and can be subjected to subsequent crosslinking curing reaction at normal temperature, and the bonding strength can be continuously enhanced along with time. And the polyurethane hot melt adhesive has excellent water resistance, oil resistance and low temperature resistance, and can be suitable for different severe environments. The rail backing plate has the advantages that the use environment is not limited, and the service life of the product is prolonged.
An anti-corrosion layer is arranged below the bearing layer and comprises a polyethylene substrate, and an epoxy powder coating is arranged outside the polyethylene substrate.
The waterproof layer is arranged at the bottom of the anti-corrosion layer and is a rubber asphalt layer, so that the waterproof effect is good, the anti-corrosion layer is not easy to damage, and the service life is long; the lower part of the rubber asphalt layer is a wear-resistant gravel layer, so that the structural strength is improved, and the rubber asphalt layer is puncture-resistant and wear-resistant.
The upper surface on foaming polyurethane layer is equipped with the shock attenuation hole, the shock attenuation downthehole packing has the polyurethane elastomer, and the damping and noise reduction effect is good.
The utility model discloses can improve orbital damping performance, reduce vehicle and orbital damage to realize improving vehicle and track facility life, the damping is fallen and make an uproar, satisfies fast and under the prerequisite of load, reinforcing transportation security and travelling comfort.
The utility model has the advantages that: simple structure, intensity is high, and damping noise reduction effect is good, long service life.
The present invention will be further explained with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is not intended to limit the invention.
Example 1
As shown in fig. 1, a polyurethane microporous elastic track base plate comprises a foamed polyurethane layer 1, wherein a plurality of microporous bubbles are arranged in the foamed polyurethane layer 1, so that the buffering effect is improved, and the noise reduction effect is good; the polyurethane layer is internally provided with at least one layer of fiber supporting net 2, so that the buffering effect is improved, the structural strength of the product is improved, the product is not easy to deform and good in oxidation resistance, the damage is avoided, and the service life is prolonged; the fibrous support web 2 is preferably 2-3 layers; the foaming polyurethane layer 1's below is equipped with bearing layer 3, bearing layer 3 is the polyurethane elastomer, be equipped with at least one deck steel wire supporting network 4 in the polyurethane elastomer, improved the structural strength of product.
The fiber support net 2 is formed by vertically interweaving polyester and steel wires serving as warps and wefts respectively, wherein the warp density and the weft density are both 1-5 mm, and the wire diameter is both 0.3-0.8 mm.
The aperture of the micropore bubble is 1-2 mm, so that the micropore bubble has a buffering effect and a good sound absorption effect.
And a polyurethane hot melt adhesive 5 is arranged between the foaming polyurethane 1 and the pressure-bearing layer 3, the polyurethane hot melt adhesive is a urethane prepolymer containing a certain amount of free NCO groups, the polyurethane hot melt adhesive can be quickly bonded, a certain physical bonding strength can be achieved by heating and cooling, a crosslinking curing reaction is subsequently carried out at normal temperature, and the bonding strength can be continuously enhanced along with time. And the polyurethane hot melt adhesive has excellent water resistance, oil resistance and low temperature resistance, and can be suitable for different severe environments. The rail backing plate has the advantages that the use environment is not limited, and the service life of the product is prolonged.
An anti-corrosion layer 6 is arranged below the pressure bearing layer 3 and comprises a polyethylene substrate, and an epoxy powder coating is arranged outside the polyethylene substrate.
The waterproof layer 7 is arranged at the bottom of the anti-corrosion layer, and the waterproof layer 7 is a rubber asphalt layer, so that the waterproof effect is good, the damage is not easy to occur, and the service life is long; the lower part of the rubber asphalt layer is a wear-resistant gravel layer, so that the structural strength is improved, and the rubber asphalt layer is puncture-resistant and wear-resistant.
The upper surface of the foamed polyurethane layer 1 is provided with damping holes, polyurethane elastomers are filled in the damping holes, and the damping and noise reduction effects are good.
The utility model discloses can improve orbital damping performance, reduce vehicle and orbital damage to realize improving vehicle and track facility life, the damping is fallen and make an uproar, satisfies fast and under the prerequisite of load, reinforcing transportation security and travelling comfort.
Claims (8)
1. A polyurethane micropore elastic track backing plate is characterized in that: the foam polyurethane foam material comprises a foam polyurethane layer, wherein a plurality of micro-pore bubbles are arranged in the foam polyurethane layer; at least one layer of fiber supporting net is arranged in the polyurethane layer; the foaming polyurethane layer is provided with a pressure bearing layer below, the pressure bearing layer is a polyurethane elastomer, and at least one layer of steel wire supporting net is arranged in the polyurethane elastomer.
2. The polyurethane microporous elastomeric track pad of claim 1, wherein: the fiber supporting net is 2-3 layers.
3. The polyurethane microporous elastomeric track pad of claim 1, wherein: the fiber support net is formed by vertically interweaving polyester and steel wires serving as warps and wefts respectively, wherein the warp density and the weft density are both 1-5 mm, and the wire diameter is both 0.3-0.8 mm.
4. The polyurethane microporous elastomeric track pad of claim 1, wherein: the aperture of the micropore bubble is 1-2 mm.
5. The polyurethane microporous elastomeric track pad of claim 1, wherein: and a polyurethane hot melt adhesive is arranged between the foaming polyurethane and the pressure-bearing layer.
6. The polyurethane microporous elastomeric track pad of claim 1, wherein: an anti-corrosion layer is arranged below the bearing layer and comprises a polyethylene substrate, and an epoxy powder coating is arranged outside the polyethylene substrate.
7. The polyurethane microporous elastomeric track pad of claim 6, wherein: the bottom of the anti-corrosion layer is provided with a waterproof layer which is a rubber asphalt layer; the lower part of the rubber asphalt layer is a wear-resistant gravel layer.
8. The polyurethane microporous elastomeric track pad of claim 1, wherein: the upper surface of the foamed polyurethane layer is provided with a damping hole, and a polyurethane elastomer is filled in the damping hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920113413.9U CN210031356U (en) | 2019-01-23 | 2019-01-23 | Polyurethane micropore elastic track backing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920113413.9U CN210031356U (en) | 2019-01-23 | 2019-01-23 | Polyurethane micropore elastic track backing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210031356U true CN210031356U (en) | 2020-02-07 |
Family
ID=69352248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920113413.9U Expired - Fee Related CN210031356U (en) | 2019-01-23 | 2019-01-23 | Polyurethane micropore elastic track backing plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210031356U (en) |
-
2019
- 2019-01-23 CN CN201920113413.9U patent/CN210031356U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200207 Termination date: 20210123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |