CN213007707U - C-shaped contact rail vibration and noise reduction structure - Google Patents
C-shaped contact rail vibration and noise reduction structure Download PDFInfo
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- CN213007707U CN213007707U CN202021617052.0U CN202021617052U CN213007707U CN 213007707 U CN213007707 U CN 213007707U CN 202021617052 U CN202021617052 U CN 202021617052U CN 213007707 U CN213007707 U CN 213007707U
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Abstract
The utility model discloses a C-shaped contact rail vibration damping and noise reducing structure, which comprises a C-shaped rail body, wherein the C-shaped rail body is provided with a mounting groove, and a damping layer tightly attached to the inner wall of the mounting groove is arranged in the mounting groove; because the damping layer of the high-damping viscoelastic material is bonded on the inner surface of the C-shaped composite rail, the damping layer material is provided with the restraint layer made of the aluminum foil material, the internal material of the damping layer generates tension, compression and shear deformation in the process of the damping layer along with the periodic bending deformation of the C-shaped contact rail during vibration, the vibration mechanical energy is converted into heat energy to be dissipated by using the high-damping viscoelastic material vibration reduction and noise reduction technology, the vibration attenuation rate of the C-shaped contact rail is improved, and the aim of improving the vibration reduction and noise reduction performance is fulfilled; compared with the similar C-shaped contact rail without the damping layer vibration and noise reduction structure, the vibration and noise reduction performance can be improved by more than 3 dB.
Description
Technical Field
The utility model relates to a measure of making an uproar falls in damping of electrified track traffic field power supply system C shaped steel aluminium composite contact rail (be referred to C type rail for short), especially a structure of making an uproar falls in C type contact rail restraint damping.
Background
The C-shaped steel-aluminum composite power supply rail is one of power supply rails (also called conductor rails and contact rails) of a third rail current receiving system of a subway, is an important part of a power supply system in rail transit, is an important part of electric energy transmission of rail transit such as urban subways, light rails and magnetic suspension trains, and plays an important role in high-speed running, safety and reliability of the trains and the like.
The electrified railway C-type contact rail current receiving system is a friction and wear behavior under the action of high speed and strong current, is the result of the interaction and mutual influence of a mechanical friction contact system and an electric contact system, and has a more complex mechanism.
The contact state and noise of the friction pair of the C-shaped contact rail and the flow system can be influenced by the vibration of a locomotive body, the harmonic vibration of the contact rail, the rigidity of a loading system and other factors, and noise pollution is easy to generate in the operation process.
At present, a user has to reflect the problem of noise pollution caused by the problem in the actual use process of the C-shaped contact rail, but no vibration and noise reduction measures specially for solving the problem exist, so that the vibration and noise reduction performance of the C-shaped contact rail cannot meet the requirement of increasing vibration and noise reduction effects.
SUMMERY OF THE UTILITY MODEL
To the above problem, an object of the utility model is to provide a structure of making an uproar falls in restraint damping to C type contact rail to reduce C type rail at pressurized, receive the produced vibration noise pollution of impact and friction in-process, satisfy the requirement that performance of making an uproar falls in the C type contact rail damping day by day improves, the utility model discloses the technical scheme who adopts is:
the utility model provides a C type conductor rail vibration damping and noise reduction structure, includes C type rail body on be equipped with the mounting groove in be provided with the damping layer of pasting tight mounting groove inner wall.
Furthermore, a group of C-shaped elastic sheets capable of compressing the damping layer are clamped in the mounting groove.
Furthermore, a restraint layer is arranged on the non-contact surface of the damping layer and the mounting groove.
Furthermore, the constraint layer is an aluminum foil.
Since the technical scheme is used, the utility model discloses following positive effect has: the utility model discloses bond the damping layer of high damping viscoelastic material at the compound rail internal surface of C type, damping layer material itself has the constrained layer of one deck aluminium foil material, the damping layer is at the periodic bending deformation in-process when along with C type contact rail vibration, the inside material production of damping layer draws pressure and shear deformation, utilize the high damping viscoelastic material damping to fall the technique of making an uproar, be transformed into heat energy with vibration mechanical energy and dissipate, improve the vibration attenuation rate of C type contact rail, thereby reach the purpose that improves the damping and fall the performance of making an uproar. Compared with the similar C-shaped contact rail without the damping layer vibration and noise reduction structure, the vibration and noise reduction performance can be improved by more than 3 dB.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view of the present invention.
Detailed Description
The C-shaped contact rail shown in fig. 1 and 2 comprises a C-shaped rail body 1, wherein a mounting groove 2 is arranged on the C-shaped rail body 1, and a damping layer 3 tightly attached to the inner wall of the mounting groove 2 is arranged in the mounting groove 2. The damping layer 3 can be bonded in the mounting groove 2 by means of adhesive.
In order to fix this damping layer 3 that can be better, this damping layer 3 drops when preventing to vibrate, is equipped with a set of C type shell fragment 4 at 2 inside callipers of mounting groove, and this C type shell fragment 4 can compress tightly damping layer 3 and prevent that it from dropping, makes this elastic damping layer 3 better with the 2 inner wall contacts of mounting groove simultaneously.
As shown in figure 2, the non-contact surface of the elastic damping layer 3 and the mounting groove 2 is also provided with a constraint layer 5, so that the elastic damping layer 3 can be constrained, the deformation of the elastic damping layer 3 is constrained, and the vibration reduction efficiency is improved. The elastic damping layer 3 is made of a high-molecular damping material, specifically can be made of a polyurethane damping material or a rubber damping material, has high damping coefficient and high temperature resistance, and mainly consumes and attenuates energy when molecules interact in a vibration deformation process; the constraint layer 5 is an aluminum foil; the C-shaped elastic sheet can be made of stainless steel or spring steel.
Since the C-shaped rail needs to be installed into the rail by the support member, which is generally disposed in the installation groove 2, the elastic damping layer 3 is cut off at a portion where the support member needs to be installed to leave an installation space in order not to interfere with the installation of the support member.
Claims (4)
1. The utility model provides a C type conductor rail damping falls structure of making an uproar, includes C type rail body (1) on be equipped with mounting groove (2), its characterized in that: and a damping layer (3) tightly attached to the inner wall of the mounting groove (2) is arranged in the mounting groove (2).
2. The C-shaped contact rail vibration damping and noise reducing structure according to claim 1, wherein: a group of C-shaped elastic sheets (4) capable of compressing the damping layer (3) are clamped in the mounting groove (2).
3. A C-shaped contact rail vibration and noise reduction structure according to claim 1 or 2, characterized in that: and a restraint layer (5) is arranged on the non-contact surface of the damping layer (3) and the mounting groove (2).
4. A C-shaped contact rail vibration damping and noise reducing structure according to claim 3, wherein: the constraint layer (5) is an aluminum foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021617052.0U CN213007707U (en) | 2020-08-06 | 2020-08-06 | C-shaped contact rail vibration and noise reduction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021617052.0U CN213007707U (en) | 2020-08-06 | 2020-08-06 | C-shaped contact rail vibration and noise reduction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213007707U true CN213007707U (en) | 2021-04-20 |
Family
ID=75463237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021617052.0U Active CN213007707U (en) | 2020-08-06 | 2020-08-06 | C-shaped contact rail vibration and noise reduction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213007707U (en) |
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2020
- 2020-08-06 CN CN202021617052.0U patent/CN213007707U/en active Active
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