Tuning steel rail vibration and noise reduction device

Abstract

A tuning steel rail vibration and noise reduction device comprises a damping resonance vibration absorber and a balance weight resonance vibration absorber which are arranged on the two sides of a steel rail, the damping resonance vibration absorber is installed at the rail waist of the steel rail, and the balance weight resonance vibration absorber is tightly attached to the outer side of the damping resonance vibration absorber. The damping resonance vibration absorber and the balance weight resonance vibration absorber are limited through a matching structure of a groove and a boss so as to prevent mutual displacement of the damping resonance vibration absorber and the balance weight resonance vibration absorber, and the damping resonance vibration absorber and the balance weight resonance vibration absorber on the two sides are clamped through an elastic clamp. Therefore, a split type structure composed of the damping resonance vibration absorber, the counterweight resonance vibration absorber and the like is adopted, a certain damping energy absorption function is achieved, the configuration of the counterweight resonance vibration absorber can be adjusted according to different requirements so as to meet different vibration reduction requirements, and each structure position is more stable and safer.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a tuning rail vibration and noise reduction device. Background Art

[0002] Existing rail vibration absorbers have various structural forms. Generally speaking, for example, the rail vibration absorber previously applied for by the applicant has a structure of a single immutable mass body. Since its natural frequency is fixed, its influence range on the vibration frequency of the rail is relatively single, and its vibration absorption effect on the rail is limited to certain extent, and its resonance function is not strong. Although some other split rail vibration absorber products have appeared, their manufacturing process is complicated, the cost is high, and the scope of application is narrow.

[0003] To this end, in view of the above-mentioned defects, the designers of the present invention have devoted themselves to research and design, and integrated the experience and achievements of many years in related industries to research and design a tuned rail vibration reduction and noise reduction device to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of this utility model is to provide a tuned rail vibration and noise reduction device, which has a simple structure and is easy to operate. It adopts a split structure, provides better damping and energy absorption function, can meet different vibration reduction needs, and provides a more efficient and flexible solution in vibration and noise reduction. It can effectively improve the vibration and noise reduction performance of rail transit, and effectively improve the operating environment and passenger experience of rail transit.

[0005] To achieve the above-mentioned purpose, the utility model discloses a tuned rail vibration reduction and noise reduction device, comprising a damping resonant vibration absorber and a counterweight resonant vibration absorber arranged on both sides of the rail, characterized in that:

[0006] The damping resonant vibration absorber is installed at the waist of the rail, and the counterweight resonant vibration absorber is installed close to the outer side of the damping resonant vibration absorber. The damping resonant vibration absorber and the counterweight resonant vibration absorber are limited by the matching structure of the groove and the boss to prevent the mutual displacement of the two. The damping resonant vibration absorber and the counterweight resonant vibration absorber on both sides are clamped by elastic clips, and the number of the elastic clips is set to 2 to 4.

[0007] Wherein: the damping resonance vibration absorber includes an inner shell, an outer shell, a damping body and a cover. The inner shell and the outer shell are assembled to form a hollow shell. The two ends of the shell are closed by the cover to form an internal cavity. The cavity is poured with a material with damping properties to form a damping body.

[0008] Wherein: the material of the inner shell is plastic, the material of the outer shell is aluminum alloy, the material of the cover is plastic, and the material of the damping body is polyurethane damping material.

[0009] Wherein: the outer side of the outer shell is provided with at least two limiting grooves to cooperate with the limiting installation of the counterweight resonance vibration absorber.

[0010] Wherein: at least two limiting bosses are correspondingly provided on the inner side of the counterweight resonant vibration absorber to perform concave-convex cooperation with the limiting grooves of the damping resonant vibration absorber.

[0011] Wherein: 2-4 elastic clip limiting grooves are provided on the outer side of the counterweight resonant vibration absorber corresponding to the number of elastic clips for positioning and installing the two ends of the elastic clip.

[0012] Wherein: the counterweight resonance vibration absorber includes a counterweight block arranged in the middle and a rubber layer covering the outside of the counterweight block.

[0013] Wherein: the material of the counterweight block is steel or lead, and the rubber layer is rubber.

[0014] From the above content, it can be seen that the tuning rail vibration and noise reduction device of the utility model has the following effects:

[0015] 1. Flexible Tuning: The split-type design allows for independent tuning of the damping resonant absorber and the counterweight resonant absorber. This allows for customized configuration based on varying track vibration characteristics and noise requirements, providing a wider frequency range for vibration reduction and improving overall vibration reduction effectiveness.

[0016] 2. Enhanced structural stability: The use of a matching structure of grooves and bosses makes the components more stable when fixed, reducing the possibility of displacement during train operation and ensuring the long-term effectiveness and safety of the device.

[0017] 3. Efficient damping and energy absorption: The damping body is made of polyurethane material, which has excellent damping properties. It can effectively absorb and attenuate track vibration energy, reduce noise transmission, and improve passenger comfort.

[0018] 4. Simplified manufacturing and installation process: By using elastic clips and limiting concave and convex fit, the installation and disassembly of the device becomes easier and faster, reducing construction time and labor costs and improving on-site construction efficiency.

[0019] 5. Material optimization: The inner shell is made of plastic and the outer shell is made of aluminum alloy. Combined with the plastic design of the cover, it provides good corrosion resistance and lightweight characteristics, while ensuring the durability of the device and long-term stability.

[0020] 6. Adjustable counterweight design: The counterweight can be made of steel or lead and covered with a rubber layer, providing a variety of weight options to meet different vibration control needs, improving the adaptability and flexibility of the device.

[0021] 7. Broadband Vibration Reduction: By adopting a split structure, the device not only provides a certain degree of damping and energy absorption, but also allows for the configuration of the counterweight resonant absorber to be adjusted to meet different vibration reduction requirements. This design enables the device to resonate with multiple modes of the main vibration system over a wider frequency band, achieving broadband vibration reduction.

[0022] 8. High Damping and High Impedance: The device's resonant vibration absorber is infused with a material with damping properties, such as polyurethane, which effectively absorbs and suppresses rail vibrations. This high-damping material provides the device with a significant suppression effect on vibration peaks.

[0023] 9. Structural stability and safety: The interplay of grooves and bosses makes each structural position more stable and secure, preventing loss of function. This design not only improves the stability of the device, but also ensures that the installation position can better avoid affecting the rail during operation.

[0024] 10. Easy to install and maintain: This device uses multiple clips and limit convex and concave to achieve quick installation and removal, convenient construction and improved efficiency. This design simplifies the manufacturing process, reduces costs, and is also easy to maintain and replace.

[0025] 11. Precise frequency modulation capability: The design of this device takes into account the impact of frequency matching accuracy on the vibration reduction effect of the rail damper. Through the structural design of precise frequency modulation, the natural frequency is not affected by clamping force and is insensitive to manufacturing processing errors, thereby producing a significant vibration reduction effect near the target frequency.

[0026] 12. Reduce radiated noise: On-vehicle online testing has shown that this device effectively reduces radiated noise caused by rail vibration. The device's vibration and noise reduction effects are particularly pronounced in the mid- and high-frequency bands, significantly reducing radiated noise within tunnels.

[0027] The details of the present invention can be obtained from the following description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The schematic diagram shows the structure of the tuning rail vibration and noise reduction device of the present invention.

[0029] Figure 2 The figure shows an exploded schematic diagram of the tuning rail vibration and noise reduction device of the present invention.

[0030] Figure 3 A front view of the tuning rail vibration and noise reduction device of the present invention is shown.

[0031] Figure 4The figure shows the structure of another embodiment of the tuning rail vibration and noise reduction device of the present invention.

[0032] Figure 5 The schematic diagram of the structure of the damping resonance vibration absorber of the present invention is shown.

[0033] Figure 6A and Figure 6B The schematic diagram shows the structure of the counterweight resonant vibration absorber of the present invention.

[0034] Reference numerals:

[0035] 10. Rail; 20. Damping resonance absorber; 21. Inner shell; 22. Outer shell; 23. Damping body; 24. Cover; 25. Limiting groove; 30. Counterweight resonance absorber; 31. Counterweight block; 32. Adhesive layer; 33. Limiting boss; 34. Elastic clip limiting groove; 40. Elastic clip. DETAILED DESCRIPTION

[0036] See also Figure 1 、 Figure 2 and Figure 3 , showing the tuning rail vibration and noise reduction device of the present invention.

[0037] The tuned rail vibration reduction and noise reduction device includes a damping resonant vibration absorber 20 and a counterweight resonant vibration absorber 30 arranged on both sides of the rail 10, the damping resonant vibration absorber 20 is installed at the waist of the rail 10, and the counterweight resonant vibration absorber 30 is installed close to the outer side of the damping resonant vibration absorber 20, and the damping resonant vibration absorber 20 and the counterweight resonant vibration absorber 30 are limited by the matching structure of the groove and the boss to prevent the mutual displacement of the two, and the damping resonant vibration absorber 20 and the counterweight resonant vibration absorber 30 on both sides are clamped by an elastic clip 40, and the elastic clip can use the patented product CN202230369820.3 of the existing patent holder. The number of installed elastic clips can be adjusted according to demand, and the number can be set to 2 to 4, wherein, in Figures 1 to 3 In the embodiment of the present invention, two elastic clips 40 are provided. Figure 4 In another embodiment shown, three spring clips are provided.

[0038] Therefore, by installing the damping and counterweighting resonant vibration absorber 20 and the counterweight resonant vibration absorber 30 on both sides of the rail, the resonance of the rail, also known as the so-called resonance effect, can be effectively reduced. The groove and the boss cooperate to limit the position and prevent mutual displacement;

[0039] See also Figure 5, shows an exploded schematic diagram of one embodiment of the damping resonant vibration absorber 20 in the utility model. As shown in the figure, the damping resonant vibration absorber 20 includes an inner shell 21, an outer shell 22, a damping body 23 and a cover 24. The inner shell 21 and the outer shell 22 are assembled to form a hollow shell. The two ends of the shell are closed by the cover 24 to form an internal cavity. The cavity is poured with a material with damping properties to form a damping body 23. When vibration energy on the rail is transmitted to the damping resonant vibration absorber 20, due to the damping properties of the damping body, the vibration energy will be reduced and reduced, thereby achieving the purpose of vibration reduction. In addition, after the damping resonant vibration absorber 20 is poured to form the damping body, it has a certain weight. After adding the counterweight resonant vibration absorber 30, the natural vibration frequency of the entire rail system can be changed, eliminating or reducing the vibration of the rail, thereby also achieving the effect of vibration reduction and noise reduction.

[0040] The outer side of the outer shell 22 is provided with at least two limiting grooves 25 to cooperate with the limiting installation of the counterweight resonance vibration absorber 30 .

[0041] See also Figure 6A and Figure 6B , shows a schematic diagram of one embodiment of the counterweight resonant vibration absorber 30 in the present invention. As shown in the figure, the counterweight resonant vibration absorber 30 includes a counterweight block 31 arranged in the middle and a rubber layer 32 covering the outside of the counterweight block. The counterweight resonant vibration absorber 30 is mainly used to change the overall weight of the rail. As shown in the figure, the counterweight block 31 is made of a metal material with a higher density such as steel or lead, and the rubber layer 32 is a non-metallic elastic material such as rubber, which plays a role of protection and insulation, and can also absorb and consume the vibration energy transmitted by the damping vibration absorber.

[0042] Among them, at least two limiting bosses 34 are provided on the inner side of the counterweight resonance absorber 30 to cooperate with the limiting grooves 25 of the damping resonance absorber 20. At the same time, 2-4 elastic clip limiting grooves 33 are provided on the outer side of the counterweight resonance absorber 30 corresponding to the number of elastic clips 40, so as to provide positioning and installation for the two ends of the elastic clips 40, and also prevent displacement and falling off due to vibration. The working principle of the counterweight vibration absorber has been mentioned above. By increasing and changing the overall weight of the rail system, the resonant frequency of the rail is changed, thereby eliminating or reducing the resonance of the rail and achieving the purpose of reducing vibration and noise. The counterweight block of the vibration absorber can be changed in weight, size or length according to actual needs.

[0043] The inner shell 21 is made of plastic, the outer shell 22 is made of aluminum alloy, the cover 24 is made of plastic, and the damper 23 is made of polyurethane damping material.

[0044] When a certain number of vibration absorbers are installed on the rails to increase the weight, the resonant frequency of the rails will change. This is also the main function of the utility model. The resonant frequency of the rails is changed by counterweighting, and the resonance of the rails is reduced to achieve the purpose of vibration reduction and noise reduction.

[0045] It is obvious that the above description and description are only examples and are not intended to limit the disclosure, application or use of the present invention. Although the embodiments have been described in the embodiments and the embodiments are described in the drawings, the present invention is not limited to the specific examples illustrated in the drawings and described in the embodiments as the best mode currently considered to implement the teachings of the present invention. The scope of the present invention will include any embodiment falling within the above description and the appended claims.

Claims

1. A tuned rail vibration and noise reduction device, comprising a damping resonant vibration absorber and a counterweight resonant vibration absorber arranged on both sides of the rail, characterized in that: The damping resonant vibration absorber is installed at the waist of the rail, and the counterweight resonant vibration absorber is installed close to the outer side of the damping resonant vibration absorber. The damping resonant vibration absorber and the counterweight resonant vibration absorber are limited by the matching structure of the groove and the boss to prevent the mutual displacement of the two. The damping resonant vibration absorber and the counterweight resonant vibration absorber on both sides are clamped by elastic clips, and the number of the elastic clips is set to 2 to 4.

2. The tuned rail vibration and noise reduction device according to claim 1, characterized in that: The damping resonance vibration absorber includes an inner shell, an outer shell, a damping body and a cover. The inner shell and the outer shell are assembled to form a hollow shell. The two ends of the shell are closed by the cover to form an internal cavity. The cavity is poured with a material with damping properties to form a damping body.

3. The tuned rail vibration and noise reduction device according to claim 2, characterized in that: The inner shell is made of plastic, the outer shell is made of aluminum alloy, the cover is made of plastic, and the damper is made of polyurethane damping material.

4. The tuned rail vibration and noise reduction device according to claim 2, characterized in that: At least two limiting grooves are provided on the outer side of the outer shell to cooperate with the limiting installation of the counterweight resonance vibration absorber.

5. The tuned rail vibration and noise reduction device according to claim 4, characterized in that: At least two limiting bosses are correspondingly provided on the inner side of the counterweight resonant vibration absorber to perform concave-convex cooperation with the limiting grooves of the damping resonant vibration absorber.

6. The tuned rail vibration and noise reduction device according to claim 1, characterized in that: The outer side of the counterweight resonant vibration absorber is provided with 2-4 elastic clip limiting grooves corresponding to the number of elastic clips for positioning and installing the two ends of the elastic clip.

7. The tuned rail vibration and noise reduction device according to any one of claims 1 to 6, characterized in that: The counterweight resonance vibration absorber comprises a counterweight block arranged in the middle and a rubber layer covering the outside of the counterweight block.

8. The tuned rail vibration and noise reduction device according to claim 7, characterized in that: The material of the counterweight is steel or lead, and the rubber layer is rubber.

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