Embedded continuous supporting and damping device for track system

Abstract

The utility model discloses an embedded continuous support damping device for a track system, which realizes the solution of continuous support of a steel rail and can continuously provide vertical, longitudinal and transverse support stiffness of the steel rail. By configuring particle damping, the problems of Pinned-Pinned resonance of the steel rail, large wheel rail noise radiation, natural vibration of the steel rail and the like in the prior art are solved; the device continuously provides lateral limiting for the steel rail, the stress concentration problem of the fastener and the steel rail is relieved, and the problems that the fastener structure is large in maintenance amount and the like are greatly solved; according to the continuous support, the continuity of the transverse rigidity of the fastener system is guaranteed, the transverse stability of the steel rail is improved and enhanced, and therefore the defect that the transverse stability of the fastener system is poor is effectively overcome.

Description

Technical Field

[0001] The utility model belongs to the field of vibration and noise control of rail transportation, in particular to an embedded continuous support vibration reduction device for a rail system. Background Art

[0002] In the rail transit sector, fastener systems are commonly used to secure the spatial relationship between rails and sleepers, ensuring the correct track geometry, limiting vertical, longitudinal, and lateral displacement of the rails, providing support rigidity, and preventing rail tipping. Fastener systems must effectively maintain a reliable connection between rails and sleepers over a long period of time, fully utilizing their vibration damping properties under dynamic conditions to slow the accumulation of residual track deformation. Therefore, they must possess sufficient strength, durability, and elasticity. During operation, the presence of stress concentration in the rails and the vibration damping and cushioning properties of the fasteners are crucial for maintaining a good wheel-rail relationship and smooth operation.

[0003] Existing rail transit fastener systems mostly utilize discrete point supports, lacking the necessary, continuous support structure along the longitudinal direction of the track. This results in weak lateral stiffness, concentrated application points, discontinuous lateral stiffness, large lateral rail displacement, poor anti-overturning capability, and poor lateral stability. This discontinuous support structure leads to problems such as pinned-pinned resonance and high wheel-rail noise radiation in existing rails.

[0004] In contrast, there is no reasonable continuous support structure in the existing technology. If a continuous support structure is set on the existing sleeper, excessive vibration will accelerate the damage of the entire system, and the practicality is too low.

[0005] Due to the above reasons, in view of the above engineering problems, the inventors of the present invention have designed an embedded continuous support vibration reduction device for a rail system based on theoretical research and extensive investigations, in the hope of realizing the practical application of the continuous support structure through this device. Utility Model Content

[0006] In order to overcome the above-mentioned problems, the inventors of the present invention have conducted intensive research and designed an embedded continuous support vibration reduction device for a track system, which realizes a solution for continuous support of the rails and can continuously provide vertical, longitudinal and lateral support stiffness of the rails; by configuring particle damping, the problems of pinned-pinned resonance of the rails, large wheel-rail noise radiation, and self-vibration of the rails in the prior art are solved; the device continuously provides lateral limitation for the rails, alleviates the stress concentration problem of the fasteners and rails, and greatly improves the problem of high maintenance volume of the fastener structure; the continuous support ensures the continuity of the lateral stiffness of the fastener system, improves and enhances the lateral stability of the rails, thereby effectively improving the disadvantage of poor lateral stability of the fastener system, thereby completing the present invention.

[0007] Specifically, the purpose of the present invention is to provide an embedded continuous support vibration reduction device for a rail system, the vibration reduction system comprising a support steel beam 2 arranged below a rail 1, the support steel beam 2 being embeddedly mounted on a track plate or a sleeper 3;

[0008] On the upper surface of the track plate or sleeper 3, a groove 31 for accommodating and installing the supporting steel beam 2 is opened along the extending direction of the rail;

[0009] The supporting steel beam 2 includes a top plate 21, a bottom plate 22 and two side plates 23 that are consolidated into one;

[0010] The top plate 21, the bottom plate 22 and the two side plates 23 together form a cavity 4.

[0011] The cavity is filled with damping particles 6, which are selected from one or more of iron sand, lead particles, steel balls, and sand;

[0012] Vibration energy is consumed by collision and friction between the damping particles and the wall of the cavity 4, and collision and friction between the damping particles.

[0013] The side panels 23 extend upwards by a predetermined distance relative to the top panel 21.

[0014] A support plate 5 is provided between the rail 1 and the supporting steel beam 2, that is, the support plate 5 is sandwiched between two side plates 23;

[0015] By selecting a support plate 5 of appropriate thickness, multiple rails are placed at the same level. At the same time, by selecting a support plate 5 of appropriate stiffness, it is matched with the overall vibration reduction system.

[0016] The top plate 21 , the bottom plate 22 and the side plates 23 are sealed and connected to each other, so that the cavity 4 is a closed cavity, the interior of the cavity 4 is dry, and liquid is prevented from entering.

[0017] The supporting steel beam 2 is continuously installed on the track plate or the sleeper 3 along the length direction of the rail.

[0018] A groove is provided on the upper surface of the track plate or the sleeper 3, and the support steel beam 2 is embedded in the groove;

[0019] The width of the groove is slightly larger than the width of the supporting steel beam 2, and the gap therebetween is filled with cement slurry or polymer sealing material.

[0020] Among them, a close-fitting glue is provided between the support pad 5 and the rail 1, and between the support pad 5 and the supporting steel beam 2. The rail 1, the support pad 5 and the supporting steel beam 2 are connected into a whole through the close-fitting glue, thereby transmitting the vibration of the rail 1 to the supporting steel beam 2, and feeding back the vibration generated by the supporting steel beam 2 to the rail 1.

[0021] Wherein, in the cavity 4, the volume of the damping particles accounts for 80-90%.

[0022] Preferably, in the cavity 4 , the particle size of the damping particles is 0.1-0.5 mm.

[0023] A fastener 6 is provided on the upper side of the support steel beam 2 , and the rail 1 is fixed together by the fastener 6 and the support steel beam 2 .

[0024] The beneficial effects of the utility model include:

[0025] (1) The embedded continuous support vibration reduction device for the rail system provided by the present invention uses a continuous support structure, which can significantly reduce the number of fastener systems, thereby reducing construction difficulty and maintenance costs;

[0026] (2) The embedded continuous support vibration reduction device for the rail system provided by the present invention can continuously provide vertical, longitudinal and lateral support stiffness of the rail to prevent the rail from tipping over;

[0027] (3) The embedded continuous support vibration reduction device for the track system provided by the present invention has sufficient strength, durability and elasticity, so that the fastener system can effectively maintain the reliable connection between the rail and the sleeper for a long time, and can fully exert its buffering and vibration reduction performance under dynamic action, delaying the accumulation of residual deformation of the track;

[0028] (4) The embedded continuous support vibration reduction device for the track system provided by the utility model does not have stress concentration on the rails, the wheel-rail relationship is good, and the train runs smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A cross-sectional view of the embedded continuous support and vibration reduction device for a rail system provided by the present invention is shown;

[0030] Figure 2 A schematic diagram of a pad of an embedded continuous support and vibration reduction device for a rail system provided by the present invention is shown;

[0031] Figure 3 A schematic diagram of the supporting steel beam of the embedded continuous support and vibration reduction device for a rail system provided by the present invention is shown;

[0032] Figure 4A schematic diagram of a track plate or sleeper of an embedded continuous support vibration reduction device for a track system provided by the present invention is shown.

[0033] Figure 5 An exploded view of an embedded continuous support and vibration reduction device accessory for a rail system provided by the present invention is shown.

[0034] Reference numerals

[0035] 1- Rail

[0036] 2-Supporting steel beams

[0037] 21-Top plate

[0038] 22-base plate

[0039] 23-Side panels

[0040] 3-Track slabs or sleepers

[0041] 31-Groove

[0042] 4-Cavity

[0043] 5-Support pad

[0044] 6- Damping particles DETAILED DESCRIPTION

[0045] The present invention will be described in further detail below through the accompanying drawings and examples, through which the features and advantages of the present invention will become more clearly understood.

[0046] The word "exemplary" is used exclusively herein to mean "serving as an example, example, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0047] The utility model provides an embedded continuous support vibration reduction device for a track system, such as Figure 1 、 Figure 2 and Figure 3 As shown in the figure, the vibration reduction system includes a support steel beam 2 arranged below the rail 1, and the support steel beam 2 is embedded in the track plate or sleeper 3. The track plate or sleeper 3 in this application is a prefabricated concrete beam, and its upper surface is provided with a groove 31 along the extension direction of the rail for accommodating the installation of the support steel beam 2. During construction, after adjusting the position, it can be directly laid on the base, which is simple to construct and highly efficient. The support steel beam 2 and the track plate or sleeper 3 can be prefabricated as a whole in the factory, or fixed and installed as a whole at the construction site.

[0048] The track plate or sleeper 3 in the present application is the supporting structure under the rails in the track system. It extends along the extension direction of the rails, so that a groove can be opened and the supporting steel beam can be installed. Before the groove is opened, its specific structural shape can also be consistent with any one of the following existing structures: concrete sleepers, longitudinal sleepers, trapezoidal sleepers, track plates, frame track plates, and floating plates.

[0049] The support steel beam 2 includes a top plate 21, a bottom plate 22 and two side plates 23 that are consolidated into one body; each plate of the support steel beam 2 can be made of steel plates and connected and fixed by welding.

[0050] The cavity is filled with damping particles 6, which are selected from one or more of iron sand, lead pellets, steel balls, and sand. The inventors have found that the preferred material order for the damping particles is: lead, steel, iron, sand, etc. The appropriate damping particles can be selected based on the required vibration damping performance and economic efficiency.

[0051] In the present application, preferably, the damping particles are approximately spherical in shape. The approximately spherical shape can make the vibration caused by collision with each other more irregular, and the overall vibration reduction effect is the best. More preferably, the particle size of the damping particles is 0.1-1 mm, preferably 0.2-0.4 mm; the multiple damping particles filled in a cavity may not have completely consistent particle sizes, as long as they are all within the specified range. The inventors found that when the particle size is controlled within the above-mentioned 0.2-0.4 mm, the overall vibration reduction effect is the best.

[0052] Vibration energy is consumed by the collision and friction between the damping particles 6 and the wall of the cavity 4, and by the collision and friction between the damping particles.

[0053] In a preferred embodiment, Figure 1 As shown in FIG, the side panels 23 extend upwards relative to the top panel 21 by a predetermined distance.

[0054] A support pad 5 is provided between the rail 1 and the supporting steel beam 2, i.e., the support pad 5 is sandwiched between the two side plates 23; the support pad 5 is a steel plate or an elastic pad, and has multiple models, each with different thicknesses and correspondingly different stiffnesses, so as to adapt to different working conditions;

[0055] By selecting support pads 5 of appropriate thickness, multiple rails are aligned at the same level. Furthermore, by selecting support pads 5 of appropriate rigidity to complement the overall vibration reduction system, the support pads 5 can be placed at the bottom of the supporting steel beam 2, so that the top of the side panels 23 is flush with the lower flange of the rail 1. This structural design allows the two side panels 23 to clamp the rail 1 on both sides, while the support pads 5 support the rail from below. Combined with fasteners and other limiting mechanisms, the rails can be completely secured in all directions.

[0056] In the present application, the main part of the side panel 23 is embedded in the track plate or the sleeper 3 along with the supporting steel beam 2, and a small protruding portion is located on both sides of the rail. This design allows the protruding portion to limit the lateral displacement of the rail, providing lateral rigidity and support for the steel pipe, ensuring that the lateral rigidity of the track system is large enough to ensure long-term stable operation of the track system.

[0057] In a preferred embodiment, the top plate 21, the bottom plate 22 and the two side plates 23 together surround and form a cavity 4. It should be emphasized that since the length of the supporting steel beam can be infinite and consistent with the length of the rail, no end plate is required; the top plate 21, the bottom plate 22 and the side plates 23 are sealed and connected to each other, preferably welded, so that the cavity 4 is a closed cavity, the interior of the cavity 4 is dry, and liquid is prevented from entering.

[0058] In a preferred embodiment, the support steel beam 2 is continuously installed on the track plate or the sleeper 3 along the length direction of the rail. Figure 1 As shown in .

[0059] A groove is provided on the upper surface of the track plate or the sleeper 3, and the support steel beam 2 is embedded in the groove;

[0060] The width of the groove is slightly larger than the width of the supporting steel beam 2, and the gap therebetween is filled with cement slurry or polymer sealing material. That is, after the supporting steel beam 2 is placed, the gap between the supporting steel beam 2 and the groove is filled and sealed with cement slurry or polymer sealing material.

[0061] In a preferred embodiment, a sealing glue is provided between the support pad 5 and the rail 1, and between the support pad 5 and the support steel beam 2, which plays a sealing role. The rail 1, the support pad 5 and the support steel beam 2 are connected into a whole through the sealing glue, thereby transmitting the vibration of the rail 1 to the support steel beam 2, and feeding back the vibration generated by the support steel beam 2 to the rail 1.

[0062] Since the supporting steel beam 2 is equipped with a particle damping system, the phase of its vibration obviously "lags behind" the vibration of the rail 1, thereby achieving a phase difference in vibration, offsetting the vibration energy, and allowing the vibration of the rail 1 to decay rapidly.

[0063] Preferably, the volume of the damping particles 6 in the cavity 4 is 80-90%, preferably about 85%. The applicant has found that, based on the vibration characteristics of the railway system, a volume ratio of about 85% has the best vibration reduction performance and can maximize the vibration reduction effect.

[0064] The present invention has been described above with reference to preferred embodiments, but these embodiments are merely exemplary and serve only as illustrations. On this basis, various replacements and improvements can be made to the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. An embedded continuous support vibration reduction device for a rail system, characterized in that: The vibration reduction device comprises a supporting steel beam (2) arranged below a steel rail (1), wherein the supporting steel beam (2) is embedded in a track plate or a sleeper (3); A groove (31) for accommodating and installing the supporting steel beam (2) is provided on the upper surface of the track plate or the sleeper (3) along the extending direction of the rail; The supporting steel beam (2) comprises a top plate (21), a bottom plate (22), and two side plates (23) that are consolidated into one body; The top plate (21), the bottom plate (22) and the two side plates (23) together surround and form a cavity (4). The cavity is filled with damping particles (6), wherein the damping particles are selected from one or more of iron sand, lead particles, steel balls, and sand; Vibration energy is consumed by collision and friction between the damping particles and the wall of the cavity (4), and collision and friction between the damping particles (6).

2. The embedded continuous support vibration reduction device for a rail system according to claim 1, characterized in that: The side panels (23) extend upwards by a predetermined distance relative to the top panel (21). A support pad (5) is provided between the steel rail (1) and the supporting steel beam (2), that is, the support pad (5) is clamped between two side plates (23); By selecting a support pad (5) of suitable thickness, multiple rails are placed at the same level; and by selecting a support pad (5) of suitable rigidity, it is matched with the overall vibration reduction system.

3. The embedded continuous support vibration reduction device for a rail system according to claim 2, characterized in that: The top plate (21), the bottom plate (22) and the side plates (23) are sealed and connected to each other, so that the cavity (4) is a closed cavity, and the interior of the cavity (4) is dry to prevent liquid from entering.

4. The embedded continuous support vibration reduction device for a rail system according to claim 1, characterized in that: The supporting steel beam (2) is continuously installed on the track plate or the sleeper (3) along the length direction of the steel rail.

5. The embedded continuous support vibration reduction device for a rail system according to claim 4, characterized in that: A groove is provided on the upper surface of the track plate or the sleeper (3), and the supporting steel beam (2) is embedded and installed in the groove; The width of the groove is slightly larger than the width of the supporting steel beam (2), and the gap therebetween is filled with cement slurry or polymer sealing material.

6. The embedded continuous support vibration reduction device for a rail system according to claim 1, characterized in that: Adhesive glue is provided between the support pad (5) and the rail (1), and between the support pad (5) and the support steel beam (2). The rail (1), the support pad (5) and the support steel beam (2) are connected into a whole by the adhesive glue, thereby transmitting the vibration of the rail (1) to the support steel beam (2), and feeding back the vibration generated by the support steel beam (2) to the rail (1).

7. The embedded continuous support vibration reduction device for a rail system according to claim 1, characterized in that: In the cavity (4), the volume of the damping particles (6) accounts for 80 to 90%; In the cavity (4), the particle size of the damping particles (6) is 0.1 to 1 mm.

Images