Air conditioning stiffness-damping interventional rail system vibration suppression device

Abstract

The application discloses a kind of air conditioning rigidity-damping interventional track system vibration suppression device.The device is arranged between fastener, and is connected with ballast surface at the bottom of steel rail.By adjusting the air pressure of air bag layer, the pre-tightening and installation of vibration suppression device can be easily realized, and the required rigidity can also be adjusted by air pressure.The middle air bag layer is connected with the support layer in nested mode or plane bonding, and can adapt to various working conditions by using layered modular design.The nested connection mode can provide lateral damping to suppress the lateral displacement and vibration of steel rail.The device has simple structure, the air bag layer can provide higher vibration suppression damping, can better consume vibration energy, has outstanding vibration suppression effect, and is easy to install and use, so it is convenient to popularize.

Description

Technical Field

[0001] This invention relates to a vibration damping device in the field of rail transit, specifically an air-conditioning stiffness-damping intervention type track system vibration damping device, which is widely used in rail transit systems such as railways and subways to effectively reduce the vibration of rails and track systems, improve the stability of track systems and the comfort of train operation, and reduce rail corrugation and rail transit noise pollution. Background Technology

[0002] The problem of wavy wear on the rail surface is prominent due to the instability of the rails. To reduce the impact on vibration- and noise-sensitive areas around the track, a large amount of vibration-damping track is used. Vibration-damping track essentially involves installing elastic supports under the rails, sleepers, or ballast. However, the installation of these elastic supports reduces the stability of the track slab itself. Under long-term train dynamic loads, this easily leads to deterioration of the rail surface and increased wheel-rail interaction, resulting in wavy wear, fastener breakage, and multi-faceted wheel defects, significantly reducing train running smoothness and ride comfort.

[0003] Furthermore, existing vibration damping devices often fail to provide flexible adjustment solutions under different vibration environments and operating conditions. As the operating environment of rail transit systems becomes increasingly complex, the demand for precise adjustment of track vibration is gradually increasing, and existing technologies can no longer fully meet the vibration suppression requirements under different operating conditions.

[0004] Therefore, there is an urgent need for a new vibration suppression device that not only provides excellent vibration control but also allows for adjustment of stiffness and damping according to actual needs, while being simple in structure and easy to install and maintain. The air-adjustable stiffness-damping interventional vibration suppression device for rail systems proposed in this invention utilizes the adjustable air pressure characteristics of the airbag layer to flexibly adjust the vibration suppression effect according to different vibration environment requirements. Simultaneously, through structural innovation, the device's lateral stability is improved, significantly enhancing its vibration suppression performance. The implementation of this device is expected to be widely used in rail transit systems, solving the problems of inflexible and limited vibration control effects in existing technologies. Summary of the Invention

[0005] This invention relates to an air-conditioned stiffness-damping interventional vibration suppression device for track systems, aiming to solve vibration control problems in track systems and other structures, and to achieve dynamic adjustment of stiffness and damping characteristics. This device, through an innovatively designed airbag and support layer structure combined with air pressure regulation technology, provides an efficient and flexible vibration suppression solution, adaptable to various operating conditions and complex vibration environments.

[0006] 1) Technical solution

[0007] (1) Core structure design

[0008] The air-conditioned stiffness-damping interventional track system vibration suppression device consists of an airbag layer and a support layer. The airbag layer is equipped with valves, which allow for flexible adjustment of stiffness and damping by controlling inflation or deflation.

[0009] Airbag layer design: The airbag layer is made of highly elastic, corrosion-resistant rubber material, and embedded with a fabric layer or steel wire to enhance fatigue resistance and aging resistance. By adjusting the air pressure, not only can dynamic stiffness and damping adjustment functions be provided, but also the preload force of the device can be controlled, facilitating quick installation and disassembly.

[0010] Support layer design: The support layer is made of metal, plastic, or rubber materials, and its surface is connected to the airbag layer in various ways, including planar vulcanization, planar bonding, or nested bonding. The support layer effectively supports and protects the airbag layer, improving the device's service life and impact resistance.

[0011] (2) Multi-layer nesting and combination design

[0012] The airbag layer and the support layer adopt a layered combination or nested design, and the nesting method can be concave-convex nesting or semi-enclosed nesting connection. The nested connection not only enhances the lateral stability of the device, but also improves its lateral vibration reduction capability, making it suitable for long-term operation under complex vibration conditions.

[0013] (3) Modular layout and application scenarios

[0014] The device can be installed between the bottom of the rail and the surface of the track bed to absorb and transmit vibration energy, effectively reducing the impact of vibration on the track bed.

[0015] Along the longitudinal direction of the rail, at least one vibration damping device can be arranged between two adjacent elastic fasteners to form a continuous vibration control module, thereby improving the overall vibration reduction performance of the track system.

[0016] (4) Vibration suppression device for air-conditioned stiffness-damping intervention track system for vibration suppression of floating slabs

[0017] The present invention also provides an air-conditioned stiffness-damping interventional vibration suppression device for floating slab track systems, comprising an upper connecting plate, a support layer, an airbag layer, a connecting rod, and a fixing plate:

[0018] The upper connecting plate and the fixed plate are made of metal and are connected by connecting rods. The upper and lower support layers are respectively connected to the upper connecting plate and the floating plate, and an airbag layer is set in the middle to form an integral structure.

[0019] By adjusting the air pressure of the airbag layer, the stiffness and damping can be dynamically adjusted, thereby improving the stability of the floating slab structure.

[0020] 2) Beneficial effects

[0021] (1) Dynamic adjustment

[0022] Through the inflation and deflation design of the air bladder layer, the device can quickly adjust its stiffness and damping characteristics to adapt to various complex vibration conditions. This flexibility significantly improves the device's vibration reduction performance and adaptability.

[0023] (2) Highly efficient vibration suppression

[0024] This invention achieves a highly efficient vibration suppression effect through a layered design of airbag layer and support layer, especially in terms of lateral vibration and impact absorption, significantly reducing vibration energy transmission.

[0025] (3) Enhanced structural stability

[0026] The nested design not only enhances the connection strength between the airbag layer and the support layer, but also strengthens the lateral stability of the device, effectively avoiding the risk of displacement or failure caused by vibration.

[0027] (4) Durability and reliability

[0028] The airbag layer is made of high-performance rubber material, and its fatigue resistance and aging resistance are enhanced by a fabric layer or steel wire, extending its service life. At the same time, the diversity and robustness of the support layer materials provide additional protection for the device, ensuring its reliability under high load conditions.

[0029] (5) Ease of installation

[0030] The invention features a simple design, a modular structure that facilitates installation and disassembly, and adjustable preload through the airbag layer, further reducing construction difficulty and maintenance costs. Attached Figure Description

[0031] Figure 1 A schematic diagram of the installation of a vibration suppression device for an air-conditioned stiffness-damping interventional track system.

[0032] Figure 2 A cross-sectional view of the track after the vibration damping device has been installed;

[0033] Figure 3 This is a schematic diagram of the vibration damping device structure with two layers of concave-convex nested connection in Example 1;

[0034] Figure 4 This is a schematic diagram of the vibration damping device structure with two planar bonding in Example 1;

[0035] Figure 5 This is a schematic diagram of the two-and-a-half-layer nested vibration damping device structure in Example 1;

[0036] Figure 6 This is a cross-sectional view of the two-and-a-half-layer nested vibration damping device in Example 1;

[0037] Figure 7 This is a schematic diagram of the vibration damping device structure with three-layer planar bonding in Example 2;

[0038] Figure 8 This is a schematic diagram of the vibration damping device structure with a three-layer concave-convex nested connection in Example 3;

[0039] Figure 9 This is a schematic diagram of the three-and-a-half-layer nested vibration damping device structure in Example 4;

[0040] Figure 10 This is a cross-sectional view of the three-and-a-half-layer nested vibration damping device in Example 4;

[0041] Figure 11 This is a schematic diagram of the installation of the floating plate vibration damping device in Example 5;

[0042] Figure 12 This is a schematic diagram of the floating plate vibration damping device in Example 5;

[0043] Markings in the diagram: 01-rail, 02-track bed, 03-fastener, 04-foundation, 05-floating slab track bed, 1-airbag layer, 2-support layer, 3-valve, 4-upper connecting plate, 5-connecting rod, 6-fixing plate. Detailed Implementation

[0044] The following are five embodiments of an air-conditioning stiffness-damping interventional vibration suppression device for a track system based on the present invention. These embodiments demonstrate the specific usage and effects of the vibration suppression device in different application scenarios. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0045] Example 1: Vibration Suppression Device for Double-Layer Connected Air Pressure Adjustable Stiffness-Damping Intervention Track System

[0046] This embodiment provides a double-layer connected air-adjustable stiffness-damping interventional track system vibration suppression device, installed between the bottom of the rail (01) and the surface of the track bed (03), to reduce vibrations generated by train operation. The device consists of a support layer (2) and an airbag layer (1), which are connected by planar bonding, semi-enclosed bonding, or concave-convex nested bonding, thereby achieving efficient vibration control and adjusting stiffness and damping characteristics according to different vibration conditions.

[0047] The airbag layer (1) is made of highly elastic and corrosion-resistant rubber material, and has an embedded fabric layer or steel wire to enhance fatigue resistance and anti-aging performance. The design of the airbag layer allows it to flexibly provide different stiffness and damping under air pressure regulation to adapt to different vibration conditions. The main function of the support layer (2) is to provide stable support and enhance the compressive strength of the entire device. The support layer is usually made of metal, plastic or rubber material and is connected to the airbag layer by planar bonding, semi-enclosed bonding or concave-convex nested bonding. The planar bonding method between the airbag layer and the support layer can provide uniform force distribution and ensure stable connection and vibration control effect. The semi-enclosed bonding method can enhance the strength of the connection, prevent the airbag layer from detaching from the support layer when subjected to large vibrations, and improve the impact resistance. The concave-convex nested bonding method between the support layer and the airbag layer can increase the contact area of ​​the connection surface, improve the stability of the connection and the ability to resist lateral displacement.

[0048] Example 2: Air-conditioning stiffness-damping interventional vibration suppression device for track systems with planar bonded intermediate airbag layer

[0049] This embodiment provides a mid-airbag layer air-regulated stiffness-damping interventional vibration suppression device for a track system, mainly composed of an airbag layer (1) and a support layer (2). The airbag layer (1) is made of highly elastic and corrosion-resistant rubber material and is designed with valves (3), which allows the device to adjust the air pressure inside the airbag layer by inflating and deflating, thereby dynamically adjusting its stiffness and damping characteristics. Under normal working conditions, the airbag layer (1) has a certain stiffness to support the vibration transmission between the rail and the track bed, and its stiffness and damping can be changed by adjusting the air pressure to meet the requirements of different vibration environments and working conditions.

[0050] The airbag layer (1) is located between the two support layers (2). The support layer (2) and the airbag layer (1) are connected by planar vulcanization to ensure good adhesion and sealing between them. The support layer (2) can be made of materials such as metal, plastic, and rubber, and has excellent compressive strength and durability, and can withstand various vibrations and impacts generated during train operation.

[0051] The device is mainly used in rail transit systems, including railways and subways. It is installed between the bottom of the rail (01) and the surface of the track bed (03), which can effectively reduce rail vibration, reduce noise pollution in the track system, and reduce rail corrugation and track bed stress damage. By adjusting the air pressure of the airbag layer (1) through the valve (3), it can quickly respond to different vibration environment requirements and realize stiffness and damping adjustment under different working conditions. This flexible adjustment method significantly improves the adaptability and stability of the device, effectively reduces adverse vibrations in the rail transit system, and improves the comfort of train operation and the stability of the track system.

[0052] Furthermore, the high-elasticity rubber material used in the airbag layer (1) not only has good wear resistance and fatigue resistance, but also effectively resists the corrosive environment in the rail transit system, ensuring the reliability of the device after long-term use. This vibration damping device, through optimized design, improves the vibration reduction effect of the track system. Simultaneously, due to the adjustable characteristics of the airbag layer, the preload of the device can be adjusted by inflating and deflating the airbag during installation and disassembly, simplifying the construction and maintenance process.

[0053] Example 3: Air-conditioning stiffness-damping interventional vibration suppression device for track systems with concave-convex nested bonding intermediate airbag layer

[0054] This embodiment proposes a mid-airbag layer air-regulating stiffness-damping intervention vibration suppression device for a track system, which is installed between the bottom of the rail (01) and the surface of the track bed (03). Its design feature is the use of a concave-convex nested bonding between the airbag layer (1) and the support layer (2). The airbag layer (1) is made of highly elastic rubber material, and its internal air pressure is adjusted via a valve (3) to achieve stiffness and damping adjustment. The airbag layer (1) adjusts its stiffness and damping effect by inflating and deflating, adapting to different vibration environments. The support layer (2) and the airbag layer (1) are connected by a concave-convex nested connection. This design effectively enhances the lateral stability of the device and reduces the risk of displacement or detachment due to vibration during use.

[0055] The nested connection between the airbag layer (1) and the support layer (2) not only improves the device's resistance to lateral forces but also enhances its lateral vibration reduction effect. After installation, the vibration suppression effect can be flexibly adjusted according to actual needs by regulating the air pressure of the airbag layer. During the installation process between the rail and the track bed, the airbag layer (1) provides the necessary stiffness and damping effect, reducing the transmission of rail vibration and reducing noise pollution in the track system. The support layer (2) forms a strong support with the airbag layer (1) through the nested connection, ensuring the device's long-term stable operation in a high-frequency vibration environment.

[0056] The air-conditioned stiffness-damping interventional track system vibration suppression device of this embodiment is widely applicable to rail transit systems such as railways and subways, and can effectively reduce rail corrugation, fastener damage and other common track defects. In addition, through the adjustable air pressure system, users can flexibly adjust the stiffness and damping of the device according to different operating conditions, so as to adapt it to various complex vibration environments. The nested design of the airbag layer (1) and the support layer (2) also enhances the durability and reliability of the device, so that it can still maintain a high vibration reduction effect after long-term use.

[0057] The device is relatively easy to install and maintain. The valve (3) allows the air pressure of the airbag layer to be adjusted quickly, so that the adjustment can be completed without disassembling the entire device. Compared with traditional vibration damping devices with fixed stiffness, the device in this embodiment has higher flexibility and adaptability, and can cope with the constantly changing vibration load and environmental conditions in the track system.

[0058] Example 4: Semi-enclosed bonded intermediate airbag layer air-conditioning stiffness-damping intervention vibration suppression device for track systems

[0059] This embodiment provides a semi-enclosed, bonded, air-conditioning stiffness-damping interventional vibration suppression device for rail transit systems, specifically designed for efficient suppression of rail vibration. The device consists of an intermediate airbag layer (1) and upper and lower support layers (2). The airbag layer and support layers are bonded in a semi-enclosed manner, allowing for flexible adjustment of stiffness and damping characteristics to adapt to different vibration conditions. The airbag layer (1) is located in the middle of the device and is made of highly elastic, corrosion-resistant rubber material, with an embedded fabric layer or steel wire to enhance its fatigue resistance and aging resistance. The airbag layer adjusts its stiffness and damping characteristics by inflating and deflating via valves (3), adapting to vibrations of different frequencies and intensities. When the airbag layer is inflated, it increases stiffness and effectively absorbs high-frequency vibrations; when the airbag layer is deflated, it enhances damping, absorbing low-frequency vibrations and larger-amplitude impacts. The support layers (2) consist of two layers, located on the upper and lower sides of the airbag layer, respectively. The support layer (2) is made of materials such as metal, rubber, or plastic, and has high compressive strength, serving to support and protect the airbag layer. The support layer is connected to the airbag layer by a semi-enclosed adhesive method, ensuring that the airbag layer will not be displaced or damaged during operation, thus improving the overall stability of the device. Part of the support layer (2) encloses the airbag layer, forming a stable connection. The semi-enclosed design enhances the stability of the airbag layer, especially under high-intensity vibration or impact, preventing the airbag layer from separating from or sliding relative to the support layer, thus improving the impact resistance of the vibration damping device. The airbag layer (1) is the core of the device. By adjusting the pressure of the gas inside the airbag, its stiffness and damping can be adjusted according to different vibration intensities and frequencies.

[0060] The three-layer vibration damping device is generally installed between the bottom of the rail (01) and the surface of the track bed (03) to absorb vibrations generated by train operation. By adjusting the air pressure in the airbag layer, the stiffness and damping of the device can be adjusted according to different vibration intensities and frequencies, thereby providing the best vibration reduction effect.

[0061] One side of the device is connected to the bottom of the rail (01), and the other side is connected to the surface of the track bed (03). During installation, the preload of the device can be set by adjusting the inflation state of the airbag layer to ensure effective vibration control.

[0062] Example 5: Vibration Suppression Device for Air-Regulated Stiffness-Damping Interventional Track Systems for Floating Slab Track Beds

[0063] This embodiment proposes an air-conditioned stiffness-damping interventional vibration suppression device for a track system between a floating slab track bed (05) and a foundation (04), aiming to improve the stability of the floating slab track bed and effectively suppress vibrations caused by train operation or external environmental factors. This device significantly reduces the vibration and displacement of the floating slab by absorbing and consuming vibration energy, thereby improving the comfort and stability of the track system. The vibration suppression device mainly consists of an upper connecting plate (4), a support layer (2), an airbag layer (1), a connecting rod (5), and a fixing plate (6). The design and assembly of each component ensure the high efficiency, stability, and flexibility of the vibration suppression device. The upper connecting plate (4) is made of metal and has high strength and durability. It is connected to the fixing plate (6) via the connecting rod (5), providing a stable connection point for the device and enabling the transmission and regulation of vibration energy without affecting other structures.

[0064] The support layer (2) is located on both sides of the airbag layer, serving to bear and support the load, ensuring that the airbag layer does not shift or deform during operation. The support layer (2) is usually made of metal or high-strength plastic, possessing sufficient compressive strength and durability. The airbag layer (1) is the core part of the device, made of highly elastic and corrosion-resistant rubber material, with internal valves (3) for inflation and deflation. The airbag layer provides different stiffness and damping performance by adjusting the air pressure. Its main function is to reduce the displacement and vibration of the floating slab track bed (05) caused by external vibration by absorbing and consuming vibration energy. The connecting rod (5) connects the upper connecting plate (4) and the fixed plate (6), ensuring the stability and cooperation between the parts. The connecting rod is generally made of high-strength metal material, possessing tensile strength and durability. The fixed plate (6) is connected to the foundation (04) by bolts, providing a stable fixing point. Its design ensures that the device can remain stable during long-term use and effectively transmit vibration energy.

[0065] The vibration damping device in this embodiment controls the stiffness and damping performance by adjusting the air pressure of the airbag layer (1), thereby adjusting the vibration damping effect according to different vibration conditions.

[0066] When the airbag layer (1) is inflated, the gas pressure inside the airbag provides high stiffness, which can effectively absorb high-frequency vibrations; when the airbag layer is deflated, the gas pressure decreases, and the device provides strong damping, which is suitable for absorbing low-frequency vibrations and large-amplitude impacts. The air pressure of the airbag layer is adjustable, which can adjust the preload, stiffness and damping performance of the vibration damping device according to actual needs.

Claims

1. An air-conditioning stiffness-damping intervention type vibration suppression device for a track system, comprising an airbag layer (1) and a support layer (2), wherein the airbag layer (2) is provided with a valve (3), characterized in that: The airbag layer (1) can provide the stiffness and damping required for vibration suppression.

2. The vibration damping device according to claim 1, characterized in that, The airbag layer (1) can be inflated and deflated through the valve (3) to achieve flexible adjustment of stiffness and damping to meet different stiffness requirements. At the same time, controlling the inflation and deflation of the airbag layer (1) can adjust the preload of the vibration damping device, enabling quick installation and disassembly.

3. The vibration damping device according to claim 1, characterized in that, The airbag layer (1) and the support layer (2) are designed in a layered combination to adapt to different working conditions. The connection between the airbag layer (1) and the support layer (2) can be planar vulcanization into one piece, planar bonding, nested vulcanization into one piece, or nested bonding.

4. The vibration damping device according to claim 4, characterized in that, When the airbag layer (1) and the support layer (2) are nested and bonded or nested and vulcanized into one piece, the nesting method can be that the airbag layer (1) and the support layer (2) are nested with concave and convex shapes, or the support layer (2) partially wraps the airbag layer (1). The nested connection between the airbag layer (1) and the support layer (2) can improve the lateral stability of the vibration damping device and enhance its lateral vibration reduction capability.

5. The vibration damping device according to claims 1-4, characterized in that, The airbag layer (1) is made of highly elastic and corrosion-resistant rubber. A fabric layer or steel wire is provided to enhance the fatigue resistance and aging resistance of the airbag layer (1).

6. The vibration damping device according to claims 1-4, characterized in that, The support layer (2) is made of metal, plastic or rubber. The support layer (1) provides support and protection for the airbag layer (1) through a nesting method.

7. The vibration damping device according to claims 1-6, characterized in that, One side of the vibration damping device is connected to the bottom of the rail (01) (airbag layer (1) or support layer (2)), and the other side (airbag layer (1) or support layer (2)) is connected to the surface of the track bed (03).

8. The vibration damping device according to any one of claims 1-6, characterized in that, At least one stiffness-damping interventional track system vibration damping device is provided between two adjacent elastic fasteners (03) along the longitudinal direction of the rail (01).

9. A vibration suppression device for an air-conditioning stiffness-damping interventional track system, characterized in that, It includes an upper connecting plate (4), a support layer (2), an airbag layer (1), a connecting rod (5), and a fixing plate (6). The upper connecting plate (4) is made of metal. The upper surface of the support layer (2) is vulcanized with the bottom surface of the upper connecting plate (4), and the lower surface is connected to the airbag layer (1). The airbag layer (1) is provided with a valve (3), and the lower surface is connected to another support layer (2). Variable stiffness and vibration damping functions are provided by adjusting the air pressure. The connecting rod (5) and the fixing plate (6) are made of metal.

10. The air conditioning stiffness-damping intervention type track system vibration suppression device according to claim 9, characterized in that, The upper connecting plate (4) is connected to the fixing plate (6) via a connecting rod (5), and the fixing plate (6) is connected to the foundation (04) via bolts (10). The lower surface of the vibration damping device abuts against the floating plate (05). The vibration damping devices are spaced apart along the line direction.

Images