Vibration reduction track board for urban rail transit

Abstract

The invention discloses a vibration reduction track plate for urban rail transit. The vibration reduction track plate comprises a track plate body and two rows of track bearing table assemblies arranged on the track plate body in the length direction of the track plate body. Each column of rail bearing table assembly comprises a plurality of rail bearing tables which are linearly arranged; a concave table is formed in the track plate body and located between the two rows of track bearing table assemblies, a vibration reduction bin is arranged in the concave table, and an inner cavity of the vibration reduction bin is filled with vibration reduction particles. According to the particle damping vibration attenuation structure, the vibration attenuation bin is additionally arranged on the track board body, the vibration attenuation bin is filled with the vibration attenuation particles, and the particle damping vibration attenuation structure is formed, so that compared with measures such as a vibration attenuation pad floating slab track bed and a steel spring floating slab track bed in the prior art, structural transformation of the track board body is simpler and more convenient, and when it is found that the vibration attenuation effect of the track board is reduced, the particle damping vibration attenuation structure is formed. And only the vibration reduction particles in the vibration reduction bin need to be replaced, replacement of the failure vibration reduction element can be completed, and maintenance convenience is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of track engineering, and in particular to a vibration-damping track plate used in urban rail transit. Background Art

[0002] At present, the vibration reduction measures for urban rail transit track plates usually use measures such as vibration reduction pad floating plate ballast and steel spring floating plate ballast. The vertical stiffness of the track is reduced by using materials such as rubber and springs, thereby achieving the effect of reducing track vibration. However, the environment of urban rail transit sections is closed, the humidity is high, and there are many heat sources. The vibration reduction equipment is subjected to train loads for a long time in this environment. Rubber, springs, etc. will produce certain fatigue phenomena, the vertical stiffness will increase, and the vibration reduction effect will decrease. When replacing the failed vibration reduction equipment, it is often necessary to lift, flip or crush the original track structure as a whole, which has high maintenance costs and low operating efficiency.

[0003] Therefore, how to improve the durability of the vibration and noise reduction equipment of the rail system and increase the convenience of replacing the vibration reduction equipment has become a technical problem that needs to be urgently solved in this field. Summary of the invention

[0004] The purpose of the present invention is to provide a vibration-damping track plate for urban rail transit, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following solutions: A vibration-damping track plate for urban rail transit, comprising a track plate body and two rows of rail bearing platform assemblies arranged on the track plate body along the length direction of the track plate body; Each row of rail support platform assemblies includes a plurality of rail support platforms arranged linearly; A concave platform is provided on the track plate body, and the concave platform is located between two rows of the rail support platform components. A vibration-damping bin is provided in the concave platform, and the internal cavity of the vibration-damping bin is filled with vibration-damping particles.

[0006] Furthermore, the vibration damping bin is a box-shaped structure with an open top, and a partition is provided in the internal cavity of the vibration damping bin, and the partition divides the internal cavity of the vibration damping bin into a plurality of sub-cavities, and the plurality of sub-cavities are respectively filled with the vibration damping particles; The top cover of the vibration damping bin is provided with a cover plate, the cover plate completely closes the top of the vibration damping bin, and a lifting hole is opened on the cover plate.

[0007] Furthermore, a limiting hole is provided on the track plate body along the thickness direction of the track plate body, and the limiting hole is located between two rows of the rail support platform assemblies.

[0008] Furthermore, two limiting holes are provided, and the two limiting holes are respectively located on two sides of the vibration damping bin.

[0009] Furthermore, four lifting ducts are arranged on two side walls in the width direction of the track plate body, and the four lifting ducts are arranged in pairs on two opposite side walls of the track plate body.

[0010] Furthermore, a rubber waterproof layer is adhered to the circumferential side wall of the cover plate.

[0011] Furthermore, an acceleration sensor is installed in the cover plate, and the acceleration sensor is used to monitor the vibration of the track plate when the vehicle runs on the track plate body.

[0012] Furthermore, a mounting groove is provided at the bottom end of the rail support platform along the length direction of the track plate body, and a polymer material vibration-damping layer is provided inside the mounting groove.

[0013] It can be seen from the above technical solution that, compared with the prior art, the beneficial effects of the present invention are: The present invention forms a particle damping vibration reduction structure by adding a vibration reduction bin on the track plate body and filling the vibration reduction bin with vibration reduction particles. Compared with the vibration reduction pad floating plate ballast, steel spring floating plate ballast and other measures in the prior art, the structural transformation of the track plate body is simpler and more convenient. When it is found that the vibration reduction effect of the track plate is reduced, it is only necessary to replace the vibration reduction particles inside the vibration reduction bin to complete the replacement of the failed vibration reduction element, which greatly improves the convenience of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 A top view of a vibration-damping track plate for urban rail transit in an embodiment of the present invention; Figure 2 A side view of a vibration-damping track plate for urban rail transit in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the cover plate in an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure of the vibration reduction bin in an embodiment of the present invention.

[0016] Description of reference numerals: 1. Track plate body; 2. Track support platform; 3. Vibration reduction chamber; 4. Partition plate; 5. Cover plate; 6. Lifting hole; 7. Limiting hole; 8. Lifting guide tube; 9. Rubber waterproof layer. DETAILED DESCRIPTION

[0017] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0018] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0019] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0020] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0021] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0022] Embodiment 1 See also Figure 1-4 As shown, a vibration-damping track plate for urban rail transit provided in this embodiment includes a track plate body 1 and two rows of rail support platform assemblies arranged on the track plate body 1 along the length direction of the track plate body 1; Prestressed steel bars are arranged inside the track plate body 1; the length of the track plate body 1 is set between 4700 mm and 4900 mm, which is convenient for the transportation and laying of the track plate; Each row of rail support platform assemblies includes a plurality of linearly arranged rail support platforms 2 for receiving rails; A concave platform is provided on the track plate body 1 and is located between two rows of rail support platform components. A vibration reduction chamber 3 is provided in the concave platform and the internal cavity of the vibration reduction chamber 3 is filled with vibration reduction particles.

[0023] Specifically, vibration-damping particles are small particles made of metal, ceramic, glass and other materials used to dissipate collision energy, with a particle diameter of 1mm~4mm.

[0024] The vibration reduction bin 3 is a box-shaped structure with an open top. The vibration reduction bin 3 is formed of a 2mm~5mm steel plate material, and the inner and outer surfaces are galvanized for rust prevention. A push-pull top cover is provided at the top. The vibration reduction chamber 3 has a length between 700 mm and 900 mm, a width between 200 mm and 300 mm, and a height between 100 mm and 150 mm; A plurality of metal partitions 4 are arranged in the internal cavity of the vibration reduction bin 3. The plurality of metal partitions 4 are crisscrossed to divide the internal cavity of the vibration reduction bin 3 into a plurality of independent sub-cavities. The plurality of sub-cavities are respectively filled with vibration reduction particles, thereby forming a particle damping vibration reduction structure.

[0025] As a new vibration reduction technology, particle damping consumes the vibration energy of the system through mutual friction and collision between particles. It has the characteristics of good durability, high reliability, insensitivity to temperature changes, and wide applicable frequency range. The present invention utilizes the characteristic of particle damping that can consume vibration energy and applies it to the vibration reduction technology of urban rail transit.

[0026] Specifically, a cover plate 5 is placed on the top cover of the vibration reduction chamber 3. The cover plate 5 can be made of concrete. A rubber waterproof layer 9 is pasted around the cover plate 5 to prevent rain, snow, oil stains, etc. in the subway area from polluting the vibration reduction chamber 3. The thickness of the rubber waterproof layer 9 is 5mm~15mm.

[0027] A lifting hole 6 is provided on the upper surface of the cover plate 5, and the diameter of the lifting hole 6 is between 20 mm and 40 mm.

[0028] An acceleration sensor is installed in the cover plate 5 to monitor the vibration of the track plate during the operation of the subway. According to the monitoring situation, particle damping vibration reduction materials of different materials can be replaced according to the vibration forms of different frequencies of the track bed. When it is found that the vibration reduction effect of the track plate is reduced, the cover plate 5 can be lifted and the vibration reduction particles inside the vibration reduction bin can be replaced to complete the replacement of the failed vibration reduction element, which greatly improves the convenience of maintenance.

[0029] Embodiment 2 See also Figure 1As shown, the vibration-damping track plate for urban rail transit provided in this embodiment is different from the vibration-damping track plate for urban rail transit provided in Example 1 in that two left-right symmetrical limiting holes 7 are provided in the middle of the track plate body, and the diameter of the limiting holes 7 is between 200 mm and 300 mm.

[0030] Specifically, the limiting hole 7 is formed on the track plate body 1 along the thickness direction of the track plate body 1 , and the two limiting holes 7 are respectively located on both sides of the vibration reduction chamber 3 .

[0031] Four lifting ducts 8 are arranged on two side walls of the track plate body 1 in the width direction. The four lifting ducts 8 are arranged in pairs on two opposite side walls of the track plate body 1 .

[0032] Specifically, the track plate body 1 can be hoisted to the track plate concrete base through the lifting pipe 8, and self-compacted concrete is poured into the lower part of the track plate body 1 through the left and right limiting holes 7 to the surface of the track plate body to form a limiting boss to limit the horizontal displacement of the track plate body 1.

[0033] In addition, a mounting groove (not shown in the drawings) is provided at the bottom end of the rail support platform 2 along the length direction of the track plate body 1, and a polymer material vibration damping layer is provided inside the mounting groove. The polymer material vibration damping layer can be made of rubber or polyurethane material with a stiffness of 0.02-0.03MPa / mm and a thickness of 10-15mm.

[0034] The vibration reduction effect of the track structure of the present invention can reach more than 10dB.

[0035] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A vibration-damping track plate for urban rail transit, characterized in that: It comprises a track plate body and two rows of rail support platform assemblies arranged on the track plate body along the length direction of the track plate body; Each row of rail support platform assemblies includes a plurality of rail support platforms arranged linearly; A concave platform is provided on the track plate body, and the concave platform is located between two rows of the rail support platform components. A vibration-damping bin is provided in the concave platform, and the internal cavity of the vibration-damping bin is filled with vibration-damping particles.

2. The vibration-damping track plate for urban rail transit according to claim 1, characterized in that: The vibration damping bin is a box-shaped structure with an open top, and a partition is provided in the internal cavity of the vibration damping bin, and the partition divides the internal cavity of the vibration damping bin into a plurality of sub-cavities, and the plurality of sub-cavities are respectively filled with the vibration damping particles; The top cover of the vibration damping bin is provided with a cover plate, the cover plate completely closes the top of the vibration damping bin, and a lifting hole is opened on the cover plate.

3. The vibration-damping track plate for urban rail transit according to claim 1, characterized in that: A limiting hole is formed on the track plate body along the thickness direction of the track plate body, and the limiting hole is located between two rows of rail support platform components.

4. The vibration-damping track plate for urban rail transit according to claim 3, characterized in that: There are two limit holes, which are respectively located on two sides of the vibration damping bin.

5. The vibration-damping track plate for urban rail transit according to claim 1, characterized in that: Four lifting ducts are arranged on two side walls in the width direction of the track plate body, and the four lifting ducts are arranged in pairs on two opposite side walls of the track plate body.

6. The vibration-damping track plate for urban rail transit according to claim 2, characterized in that: A rubber waterproof layer is adhered to the circumferential side wall of the cover plate.

7. The vibration-damping track plate for urban rail transit according to claim 2, characterized in that: An acceleration sensor is installed in the cover plate, and the acceleration sensor is used to monitor the vibration of the track plate when the vehicle runs on the track plate body.

8. The vibration-damping track plate for urban rail transit according to claim 1, characterized in that: A mounting groove is provided at the bottom end of the rail support platform along the length direction of the track plate body, and a polymer material vibration reduction layer is provided inside the mounting groove.

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