Railway rail vibration absorbing device

Abstract

The utility model relates to rail damping technology field, concretely relates to a rail vibration absorption device for rail transit, including rail and vibration absorption subassembly, and vibration absorption subassembly includes first vibration absorption body, second vibration absorption body, first mass block, second mass block and fastening member, and the rail is covered through first vibration absorption body and second vibration absorption body, and is connected through bolt, and the first mass block and the second mass block set up of built-in rail bottom form multidirectional damping system, and the radial pressure is simultaneously adopted adjustable fastening mechanism to add, and the problem that the loosening of traditional vibration absorber is effectively solved because of metal clamp fatigue. Have the advantages such as stable installation, damping band width, maintenance simple, can significantly improve the damping effect and service life, especially suitable for the high vibration environment of urban rail transit.

Description

Technical Field

[0001] This utility model relates to the field of rail vibration reduction technology, and in particular to a rail vibration absorption device for rail transit. Background Technology

[0002] Existing rail vibration absorbers consist of a mass block and a rubber-based vibration-absorbing mass block. To ensure that the rail vibration absorber can remain in the mid-span position for a long time and can fully exert its vibration reduction performance under dynamic action, thus delaying the occurrence of rail corrugation, it is required to have a simple structure that is easy to install and disassemble.

[0003] The existing publication number CN222796100U discloses a rail vibration absorber capable of reducing vibration and noise, comprising: a damping plate, which can be fitted and installed at the web of the rail; a mass block, the length of which is less than the length of the damping plate, and which is fitted to the outside of the damping plate in use; an elastic metal clamp, which is engaged with the middle of the vibration-absorbing mass block along its length, and can hold the vibration-absorbing mass block on the rail foot corresponding to the damping plate; and a fixing clamp, which has two clamping blocks, which can be fixedly installed on both sides of the rail corresponding to the damping plate; wherein, there are two fixing clamps, which are used to fix the corresponding ends of the damping plate to the rail, and the inner sides of the two fixing clamps abut against or engage with the corresponding ends of the mass block. This ensures that the damping plate and the mass block are stably held in the mid-span position of the rail, reducing its longitudinal movement. The use of elastic metal clamps for installation makes installation convenient.

[0004] However, the elastic metal clamps of the rail vibration absorbers that can reduce vibration and noise are prone to metal fatigue under long-term vibration. After the elasticity is weakened, the mass block may become loose. Although the fixing clamp can limit longitudinal movement, if the clamp fails, the mass block may still be displaced laterally or vertically, affecting the resonance effect. Utility Model Content

[0005] The purpose of this utility model is to provide a rail vibration absorption device for rail transit, which solves the problem that the elastic metal clamp of the existing rail vibration absorber, which can reduce vibration and noise, is prone to metal fatigue under long-term vibration. After the elasticity is weakened, the mass block may become loose. Although the fixing clamp can limit longitudinal movement, if the clamp fails, the mass block may still be displaced laterally or vertically, affecting the resonance effect.

[0006] To achieve the above objectives, this utility model provides a rail vibration absorption device for rail transit, including a rail and a vibration absorption component;

[0007] The vibration-absorbing assembly includes a first vibration-absorbing body, a second vibration-absorbing body, a first mass block, a second mass block, and fastening components. The first vibration-absorbing body covers one side of the rail and the bottom of the rail, and extends laterally along the bottom of the rail to the other edge of the rail. The second vibration-absorbing body covers the rail on the opposite side of the first vibration-absorbing body. The first and second vibration-absorbing bodies are connected by bolts. The first and second vibration-absorbing bodies each have a first mass block extending along the length of the rail inside. The second mass block is connected to the first vibration-absorbing body and located at the bottom of the rail. The fastening components are provided on the side of the first and second vibration-absorbing bodies away from the rail.

[0008] The fastening component includes an extension plate and a vertical plate. The extension plate is fixedly connected to the side of the first vibration-absorbing body and the second vibration-absorbing body away from the rail. Multiple vertical plates are fixedly connected to the top of the two extension plates respectively.

[0009] The fastening components further include adjusting bolts and abutment plates. Each of the vertical plates is threaded with the adjusting bolt, which passes through the vertical plate. The end of the adjusting bolt near the rail is fixedly connected to the abutment plate.

[0010] The rail vibration absorption device for rail transit also includes sound-absorbing plates, and the first vibration absorption body and the second vibration absorption body are respectively fixed with the sound-absorbing plates between them and the rail.

[0011] The rail vibration absorption device for rail transit also includes damping adhesive, and the damping adhesive is filled between the first mass block and the second mass block and the first vibration absorption body. The damping adhesive is also filled between the first mass block and the second vibration absorption body.

[0012] This utility model discloses a rail vibration-absorbing device for rail transit. The device consists of a first and a second vibration-absorbing body that enclose the rail and are connected by bolts. A first built-in mass block and a second mass block positioned at the bottom of the rail form a multi-directional vibration reduction system. An adjustable fastening mechanism applies radial pressure, effectively solving the loosening problem caused by metal clamp fatigue in traditional vibration absorbers. It offers advantages such as stable installation, wide vibration reduction frequency range, and easy maintenance, significantly improving vibration reduction effect and service life. It is particularly suitable for the high-vibration environment of urban rail transit. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the overall structure of the rail vibration absorption device for rail transit according to the first embodiment of this utility model.

[0015] Figure 2 This is a side view of the rail vibration absorption device for rail transit according to the first embodiment of this utility model.

[0016] In the diagram: 101-rail, 102-first vibration-absorbing body, 103-second vibration-absorbing body, 104-first mass block, 105-second mass block, 106-extension plate, 107-vertical plate, 108-adjusting bolt, 109-support plate, 110-sound-absorbing plate, 111-damping rubber. Detailed Implementation

[0017] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0018] The first embodiment of this application is as follows:

[0019] Please see Figure 1 and Figure 2 ,in, Figure 1 This is a schematic diagram of the overall structure of the rail vibration absorption device for rail transit according to the first embodiment of this utility model. Figure 2 This is a side view of the rail vibration absorption device for rail transit according to the first embodiment of this utility model.

[0020] This utility model provides a rail vibration absorption device for rail transit: it includes a rail 101 and a vibration absorption assembly. The vibration absorption assembly includes a first vibration absorption body 102, a second vibration absorption body 103, a first mass block 104, a second mass block 105, a fastening component, a sound-absorbing plate 110, and a damping adhesive 111. The fastening component includes an extension plate 106, a vertical plate 107, an adjusting bolt 108, and a support plate 109. The aforementioned solution solves the problem that the elastic metal clamps of existing rail vibration absorbers, which can reduce vibration and noise, are prone to metal fatigue under long-term vibration. After the elasticity weakens, the mass block may loosen. Although the fixing clamp can limit longitudinal movement, if the clamp fails, the mass block may still be displaced laterally or vertically, affecting the resonance effect.

[0021] In this specific embodiment, the first vibration-absorbing body 102 covers one side of the rail 101 and the bottom of the rail 101, and extends laterally along the bottom of the rail 101 to the other edge of the rail 101. The second vibration-absorbing body 103 covers the side of the rail 101 opposite to the first vibration-absorbing body 102. The first vibration-absorbing body 102 and the second vibration-absorbing body 103 are connected by bolts. The interior of both the first vibration-absorbing body 102 and the second vibration-absorbing body 103 is provided with a first mass block 104 extending along the length direction of the rail 101. The second mass block 105 is connected to the first vibration-absorbing body 102 and is located at the bottom of the rail 101. The fastening member is provided on the side of both the first vibration-absorbing body 102 and the second vibration-absorbing body 103 away from the rail 101. The first vibration-absorbing body 102 and the second vibration-absorbing body 103 are bolted together to form a covering and fixing structure for the rail 101. When the rail 101 vibrates, the vibration energy is transmitted to the interior of the first vibration-absorbing body 102 and the second vibration-absorbing body 103. The first vibration-absorbing body 102 and the second vibration-absorbing body 103 have a first mass block 104 extending along the length of the rail 101. The interaction between the first mass block 104 and the damping rubber 111 converts the vibration mechanical energy into heat energy. Simultaneously, a second mass block 105 is located at the bottom of the rail 101, forming a multi-frequency vibration absorption system with the first mass block 104, effectively suppressing the vibration of the rail 101 in different directions. The fastening components are located on the outside of the first vibration-absorbing body 102 and the second vibration-absorbing body 103 to maintain close contact between the device and the rail 101, ensuring a long-term stable vibration reduction effect. By combining mechanical fixing with dynamic vibration absorption, the problem of loosening of traditional vibration absorbers is effectively solved, and the vibration reduction effect and stability are significantly improved, making it particularly suitable for the high vibration environment of rail transit.

[0022] In this design, extension plates 106 are fixedly connected to the sides of both the first vibration-absorbing body 102 and the second vibration-absorbing body 103 away from the rail 101. Multiple vertical plates 107 are fixedly connected to the tops of the two extension plates 106. The extension plates 106 extend outward from the first vibration-absorbing body 102 and the second vibration-absorbing body 103, increasing the support area and stability. The vertical plates 107 are vertically mounted on the extension plates 106, providing a foundation for subsequent structural installations. This enhances the overall structural strength of the vibration-absorbing device, enabling it to withstand greater vibration loads.

[0023] Secondly, each of the vertical plates 107 is threaded with an adjusting bolt 108, which penetrates the vertical plate 107. The end of the adjusting bolt 108 near the rail 101 is fixedly connected to the abutment plate 109. Each vertical plate 107 has a threaded hole with the adjusting bolt 108 threadedly connected to it. The adjusting bolt 108 penetrates the vertical plate 107, and its end near the rail 101 is fixedly connected to the abutment plate 109. By rotating the adjusting bolt 108, the clamping force of the abutment plate 109 on the first vibration-absorbing body 102 and the second vibration-absorbing body 103 can be precisely controlled. When the device becomes slightly loose due to long-term use, simply tightening the adjusting bolt 108 appropriately will restore the ideal clamping state. The design of the abutment plate 109 increases the contact area, ensuring uniform pressure distribution and avoiding localized stress concentration. It compensates for the preload loss caused by material aging; it allows for flexible adjustment of the clamping force according to actual working conditions; and it facilitates installation, debugging, and maintenance. This improves the reliability and service life of the device, ensuring that the vibration absorption device maintains its optimal working condition for a long time.

[0024] Simultaneously, the first vibration-absorbing body 102 and the second vibration-absorbing body 103 are respectively fixed with the sound-absorbing plate 110 between them and the rail 101. The sound-absorbing plate 110 adopts a multi-layer composite structure design. When the rail 101 generates vibration noise, the sound wave first enters through the microporous structure of the sound-absorbing plate 110, generating frictional loss in the porous material; subsequently, the sound wave undergoes multiple reflections and interferences between the interfaces of different material layers of the sound-absorbing plate 110, converting sound energy into heat energy through viscoelastic damping. This provides noise reduction functionality.

[0025] Furthermore, the damping adhesive 111 is filled between the first mass block 104 and the second mass block 105 and the first vibration-absorbing body 102, and the damping adhesive 111 is filled between the first mass block 104 and the second vibration-absorbing body 103. The damping adhesive 111 is made of a special silicone rubber composite material. When the rail 101 vibrates and is transmitted to the mass block, relative motion occurs between the mass block and the vibration-absorbing body. At this time, the damping adhesive 111 undergoes periodic shear deformation, and the mechanical vibration energy is converted into heat energy dissipation through the friction of the molecular chains, thus extending the service life of the rail 101 and the vibration-absorbing device.

[0026] The rail vibration absorption device for rail transit according to this embodiment uses a first vibration absorption body 102 and a second vibration absorption body 103 to fully enclose the rail 101 with bolts, solving the problem of easy fatigue and loosening of traditional elastic clamps; a multi-directional vibration reduction system is formed by the longitudinally arranged first mass block 104 and the second mass block 105 at the bottom of the rail 101, which, together with the damping rubber 111 and the sound-absorbing plate 110, realizes the conversion of vibration energy, achieving vibration reduction and noise reduction; the fastening components have a self-compensation function, solving the technical problems of poor stability, easy loosening and frequent maintenance of traditional vibration absorbers, providing an efficient and reliable vibration reduction and noise reduction solution for urban rail transit.

[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A rail vibration damping device for rail transit, comprising a rail, characterized in that, It also includes vibration damping components; The vibration-absorbing assembly includes a first vibration-absorbing body, a second vibration-absorbing body, a first mass block, a second mass block, and fastening components. The first vibration-absorbing body covers one side of the rail and the bottom of the rail, and extends laterally along the bottom of the rail to the other edge of the rail. The second vibration-absorbing body covers the rail on the opposite side of the first vibration-absorbing body. The first and second vibration-absorbing bodies are connected by bolts. The first and second vibration-absorbing bodies each have a first mass block extending along the length of the rail inside. The second mass block is connected to the first vibration-absorbing body and located at the bottom of the rail. The fastening components are provided on the side of the first and second vibration-absorbing bodies away from the rail.

2. The rail vibration absorption device for rail transit as described in claim 1, characterized in that, The fastening components include extension plates and vertical plates. The first vibration-absorbing body and the second vibration-absorbing body are both fixedly connected to the side away from the rail with the extension plates. The tops of the two extension plates are respectively fixedly connected to multiple vertical plates.

3. The rail vibration absorption device for rail transit as described in claim 2, characterized in that, The fastening components also include adjusting bolts and abutment plates. Each of the vertical plates is threaded with the adjusting bolt, which passes through the vertical plate. The end of the adjusting bolt near the rail is fixedly connected to the abutment plate.

4. The rail vibration absorption device for rail transit as described in claim 1, characterized in that, The rail vibration absorption device for rail transit also includes sound-absorbing plates, and the first vibration absorption body and the second vibration absorption body are respectively fixed with the sound-absorbing plates between them and the rail.

5. The rail vibration absorption device for rail transit as described in claim 1, characterized in that, The rail vibration absorption device for rail transit also includes damping adhesive, and the damping adhesive is filled between the first mass block and the second mass block and the first vibration absorption body.

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