Vibration and noise reduction reinforcing device for ballast bed
By adding foam sound-absorbing concrete structure on the gravel track bed, the problems of aging and construction troubles of existing vibration damping pads are solved, the vibration and noise reduction performance is significantly improved, and the construction process is simplified.
Patent Information
- Application Number
- CN202421507945.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The existing vibration damping pads of gravel track beds, such as rubber vibration damping pads, tend to age under frequent load impacts of vehicles, weaken their elasticity, cannot effectively absorb and reduce vibration, and are troublesome to construct.
Add a foam sound-absorbing concrete structure on the basis of the gravel track bed. By burying the casing in the concrete sleeper and fixing the prefabricated foam sound-absorbing concrete blocks in the middle of the concrete sleeper, the sound-absorbing function is used to improve vibration and noise reduction effects.
It significantly improves the vibration and noise reduction performance of the gravel track bed, increases the weight of the track bed, improves the vibration quality, and has a simple and reasonable structure and convenient construction.
Smart Images
Figure CN222809790U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gravel roadbeds, in particular to a vibration reduction and noise reduction strengthening device for a gravel roadbed. Background Art
[0002] At present, there are more and more sections of the upper cover development, and the gravel roadbed outside the reservoir mostly adopts the solution of installing vibration damping pads under the ballast. However, due to the performance characteristics of the vibration damping pads, their use effect is often not good. For example, taking the most common rubber vibration damping pad as an example, it uses the elasticity of rubber to achieve vibration reduction, but because the molecular structure of rubber is unstable, it is easy to age and weaken its elasticity as it grows in service under the frequent load impact of vehicles, and thus cannot effectively absorb and reduce vibration. Although such rubber pads can be maintained by replacement, since they are laid under the gravel ballast, the construction is undoubtedly more troublesome, and it needs to be constructed during the skylight period, which is time-consuming and laborious. Summary of the invention
[0003] The purpose of the utility model is to provide a vibration and noise reduction reinforcement device for a crushed stone roadbed in view of the above-mentioned deficiencies in the prior art, which significantly improves the vibration and noise reduction effects by adding a foam sound-absorbing concrete structure on the basis of the crushed stone roadbed.
[0004] The purpose of this utility model is achieved by the following technical solutions:
[0005] A vibration reduction and noise reduction reinforcement device for a gravel roadbed, a concrete sleeper is arranged on the gravel roadbed, and steel bars are installed on the concrete sleeper. The feature of the device is that the vibration reduction and noise reduction reinforcement device comprises a sleeve pre-buried in the concrete sleeper and a prefabricated foam sound-absorbing concrete block, the prefabricated foam sound-absorbing concrete block is connected to the sleeve by bolts and fixed in the middle position of the concrete sleeper.
[0006] An internal threaded sleeve is pre-buried in the prefabricated foam sound-absorbing concrete block, the internal threaded sleeve matches the position of the sleeve, and the bolt is screwed into the internal threaded sleeve and connected to the sleeve.
[0007] An inclined transverse limiting groove is provided at the middle position of the concrete sleeper, and the prefabricated foam sound-absorbing concrete block is arranged in the transverse limiting groove.
[0008] The length of the prefabricated foam sound-absorbing concrete block in the track direction spans across a plurality of the concrete sleepers, that is, a plurality of the concrete sleepers share one prefabricated foam sound-absorbing concrete block.
[0009] The advantages of the utility model are:
[0010] 1) The ballast weight of the vibration-damping gravel ballast is increased, which increases the vibration mass and improves the vibration-damping performance;
[0011] 2) The added prefabricated components have sound absorption function, which can improve the noise reduction performance;
[0012] 3) The structure is simple and reasonable, the construction is convenient, and it is suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a plan view of the utility model;
[0014] Figure 2 It is a cross-sectional view of the utility model. DETAILED DESCRIPTION
[0015] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:
[0016] like Figure 1-2 As shown, the marks 1-6 in the figure respectively represent: concrete sleeper 1, prefabricated foam sound-absorbing concrete block 2, gravel turnout 3, vibration-damping pad 4, reinforced concrete cushion 5, bolt 6.
[0017] Example: Figure 1 and Figure 2 As shown, the vibration reduction and noise reduction reinforcement device for the gravel roadbed in this embodiment is used to enhance the vibration reduction and noise reduction performance of the gravel roadbed, and the gravel roadbed mainly includes a concrete sleeper 1 laid on a gravel turnout 3, and the rail is installed on the concrete sleeper 1. A vibration reduction pad 4 for vibration reduction is arranged below the gravel turnout 3, and the vibration reduction pad 4 is arranged on a reinforced concrete cushion layer 5.
[0018] Specifically, the main body of the vibration reduction and noise reduction reinforcement device for the gravel roadbed in this embodiment is a prefabricated foam sound-absorbing concrete block 2, which is installed in the middle of the surface of the concrete sleeper 1. Two sleeves are pre-buried inside the concrete sleeper 1, and two internal threaded sleeves are also pre-buried inside the prefabricated foam sound-absorbing concrete block 2. These two internal threaded sleeves correspond to the two sleeves pre-buried in the concrete sleeper 1 one by one; when the prefabricated foam sound-absorbing concrete block 2 is installed, its internal threaded sleeve is aligned with the sleeve in the concrete sleeper 1, and then the bolt 6 is screwed in to connect the prefabricated foam sound-absorbing concrete block 2 with the concrete sleeper 1 and fix it firmly.
[0019] At this time, the prefabricated foam sound-absorbing concrete block 2 installed on the concrete sleeper 1 increases the ballast weight of the vibration-damping gravel roadbed, that is, increases the vibration-parameter mass and improves the vibration-damping performance. At the same time, the prefabricated foam sound-absorbing concrete block 2 itself can absorb the noise generated by vibration by virtue of its material characteristics, greatly improving the noise reduction performance; more importantly, since the prefabricated foam sound-absorbing concrete block 2 is set in the middle of the concrete sleeper 1, that is, between the rails on both sides, it can also play a certain barrier role, preventing the noise generated by the rails on both sides from being superimposed and amplified when the vehicle is running.
[0020] like Figure 2 As shown, a partially inclined inward groove is provided in the middle position of the concrete sleeper 1, and the inward groove forms a transverse limit groove for the prefabricated foam sound-absorbing concrete block 2. When the prefabricated foam sound-absorbing concrete block 2 is installed in the transverse limit groove, the lateral displacement of the prefabricated foam sound-absorbing concrete block 2 can be effectively restrained to ensure its accurate and stable position.
[0021] like Figure 1 As shown, the length of the prefabricated foam sound-absorbing concrete block 2 in the line direction in this embodiment can span three concrete sleepers 1, that is, these three concrete sleepers 1 share one prefabricated foam sound-absorbing concrete block 2. At this time, the prefabricated foam sound-absorbing concrete block 2 can not only significantly increase the vibration reduction and noise reduction performance, but also further connect several concrete sleepers 1 into an integral structure to improve the structural performance of the concrete sleepers 1.
[0022] Although the above embodiments have described the concepts and embodiments of the purpose of the utility model in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the utility model without departing from the scope of the claims, so they are not described one by one here.
Claims
1. A vibration reduction and noise reduction reinforcement device for a crushed stone ballast bed, wherein a concrete sleeper is arranged on the crushed stone ballast bed, and steel bars are installed on the concrete sleeper, characterized in that: The vibration reduction and noise reduction reinforcement device comprises a sleeve pre-buried in the concrete sleeper and a prefabricated foam sound-absorbing concrete block. The prefabricated foam sound-absorbing concrete block is connected to the sleeve by bolts and fixed in the middle of the concrete sleeper.
2. The vibration and noise reduction strengthening device for crushed stone roadbed according to claim 1 is characterized by: An internal threaded sleeve is pre-buried in the prefabricated foam sound-absorbing concrete block, the internal threaded sleeve matches the position of the sleeve, and the bolt is screwed into the internal threaded sleeve and connected to the sleeve.
3. The vibration and noise reduction strengthening device for crushed stone roadbed according to claim 1 is characterized in that: An inclined transverse limiting groove is provided at the middle position of the concrete sleeper, and the prefabricated foam sound-absorbing concrete block is arranged in the transverse limiting groove.
4. The vibration and noise reduction strengthening device for crushed stone roadbed according to claim 1 is characterized by: The length of the prefabricated foam sound-absorbing concrete block in the track direction spans across a plurality of the concrete sleepers, that is, a plurality of the concrete sleepers share one prefabricated foam sound-absorbing concrete block.