Steel rail vibration absorber capable of reducing vibration and noise

Abstract

The utility model discloses a steel rail vibration absorber capable of reducing vibration and noise, and relates to the technical field of steel rail vibration reduction. Comprising a damping plate which can be attached to the rail web of the steel rail; the length of the mass block is smaller than that of the damping plate, and the mass block is attached to the outer side of the damping plate in the using state; the elastic metal clamp is clamped in the middle of the vibration absorption mass block in the length direction and can clamp the vibration absorption mass block on a rail foot of a steel rail corresponding to the damping plate; the fixing clamp is provided with two clamping blocks, and the two clamping blocks can be fixedly installed on the two sides of a steel rail corresponding to the damping plate; the number of the fixing clamps is two, the two fixing clamps are used for fixing the corresponding ends of the damping plate to a steel rail, and the inner sides of the two fixing clamps abut against or are clamped to the corresponding ends of the mass block. According to the utility model, the damping plate and the mass block can be stably kept in the midspan position of the track, and the longitudinal movement is reduced.

Description

Technical Field

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

[0002] With the rapid development of urban rail transit in my country, the vibration and noise problems caused by wheel-rail interaction have become increasingly prominent. To alleviate this problem, rail vibration absorbers have become an effective measure. Rail vibration absorbers are installed at the mid-span position of the track, that is, between the two fasteners of the track, to absorb rail vibration, also known as rail dampers. Its main principle is to generate resonance to absorb track vibration through a spring-damping mass vibration reduction system composed of an elastic body and a mass body.

[0003] The existing rail vibration absorber includes a vibration absorbing mass block composed of a mass block and rubber. In order to ensure that the rail vibration absorber can be effectively maintained in the mid-span position for a long time, and can fully exert its vibration reduction performance under the action of power, and delay the generation of rail corrugation, it is required to have a simple structure and be easy to install and disassemble. Therefore, most of the existing rail vibration absorbers are only fixed with elastic metal clips, although they can meet the use requirements of the rail vibration absorber. However, after long-term use, the stability of the elastic metal clip is reduced, causing the vibration absorbing mass block to easily move longitudinally, affecting the vibration absorption effect. Utility Model Content

[0004] Aiming at the technical problem that the existing rail vibration absorbers have poor stability; the utility model provides a rail vibration absorber capable of reducing vibration and noise, which can ensure that the damping plate and the mass block are stably maintained at the mid-span position of the track, reduce their longitudinal movement, enable the vibration absorber to fully exert its vibration reduction performance, delay the occurrence of rail corrugation, improve the vibration absorption effect, help alleviate the vibration and noise problems caused by wheel-rail interaction, and promote the sustainable development of urban rail transit.

[0005] The utility model is realized by the following technical solutions:

[0006] The utility model provides a rail vibration absorber capable of reducing vibration and noise, comprising: a damping plate, which can be fitted on the waist of the rail; a mass block, which has a length less than that of the damping plate and is fitted on the outer side of the damping plate in a use state; an elastic metal clip, which is clamped in the middle of the length direction of the mass block and can clamp the mass block on the rail foot of the rail corresponding to the damping plate; a fixing clamp, which is provided with two clamping blocks, and the two clamping blocks can be fixedly installed on both sides of the rail corresponding to the damping plate; wherein two fixing clamps are provided, and the two fixing clamps are respectively used to fix the corresponding ends of the damping plate on the rail, and in a working state, the inner sides of the two fixing clamps are in contact with or clamped on the corresponding ends of the mass block.

[0007] The utility model provides a rail vibration absorber capable of reducing vibration and noise, comprising a damping plate, a mass block, an elastic metal clip and a fixing clamp, wherein the damping plate is fixed to the waist of the rail by the fixing clamp, and the mass block is fixed to the foot of the rail by the elastic metal clip, thereby forming a vibration reduction and noise reduction system through the damping plate and the mass block, so that the mass block generates resonance when the rail vibrates to absorb the vibration of the rail, and the damping plate consumes vibration energy to reduce the rail radiation noise, and at the same time, the two fixing clamps are abutted or clamped on the corresponding ends of the mass block, so that the longitudinal movement of the mass block can be limited, therefore, the elastic metal clip only needs to limit the lateral and vertical displacements of the mass block, so that the load of the elastic metal clip is reduced, and the stability of the elastic metal clip can be ensured, and the mass block is fixed by the elastic metal clip and the fixing clamp at the same time, so that the longitudinal movement of the mass block can be avoided to affect the vibration absorption effect, and the generation of rail corrugation is delayed.

[0008] Therefore, the rail vibration absorber provided by the utility model can ensure that the damping plate and the mass block are stably maintained in the mid-span position of the track, reduce their longitudinal movement, enable the vibration absorber to fully exert its vibration reduction performance, delay the generation of rail corrugation, improve the vibration absorption effect, help alleviate the vibration and noise problems caused by wheel-rail interaction, and promote the sustainable development of urban rail transit.

[0009] In an optional embodiment, the damping plate is a profile having honeycomb holes, and the gaps outside the honeycomb holes of the damping plate are filled with rubber, so that when the rail vibrates, the damping plate is vibrated, and the honeycomb holes vibrate accordingly, causing shear deformation of the rubber in the gaps outside the honeycomb holes, thereby consuming the vibration energy of the rail and reducing the noise radiation of the rail.

[0010] In an optional embodiment, the damping plate is an aluminum alloy profile to facilitate the production and processing of the damping plate.

[0011] In an optional embodiment, two elastic metal clips are provided, and the two elastic metal clips are spaced apart and clamped on the side wall of the mass block in the length direction to improve the stability of the mass block installation.

[0012] In an optional embodiment, the two clamping blocks are connected by fixing bolts to facilitate the installation of the fixing fixture.

[0013] In an optional embodiment, a pressing portion is vertically provided at the upper end of the clamping block, and the pressing portion is used to squeeze the damping plate; a through hole is provided at the lower end of the clamping block, and the through hole is used to pass the rod portion of the fixing bolt.

[0014] In an optional embodiment, the fixing clamp further includes a flexible gasket, which is located between the lower ends of the two clamping blocks, so that the connection between the two clamping blocks is converted into a flexible connection through the flexible gasket, thereby reducing the transmission of rail vibration on both sides of the fixing clamp.

[0015] In an optional embodiment, the flexible gasket is sleeved outside the rod portion of the fixing bolt to ensure the stability of the installation of the flexible gasket.

[0016] In an optional embodiment, an abutment recess is further provided on the inner side of the clamping block, and the abutment recess is used to accommodate the foot of the rail to ensure the stability of the connection between the clamping block and the rail and avoid longitudinal movement of the fixing clamp.

[0017] In an optional embodiment, the side walls of the block used for contacting the rail are sequentially provided with an insulating layer and a rubber damping layer, and the insulating layer can insulate the fixing clamp from the rail, while the rubber damping layer can, on the one hand, avoid rigid collision between the rail and the fixing clamp to protect the insulating layer and reduce noise, while reducing vibration transmitted to the fixing clamp by the rail to ensure the stability of the fixing clamp, and on the other hand, can ensure that the block and the rail can fit well.

[0018] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0019] The utility model provides a rail vibration absorber capable of reducing vibration and noise, comprising a damping plate, a mass block, an elastic metal clamp and a fixing fixture, wherein the damping plate is fixed to the rail waist of the rail by the fixing fixture, and the mass block is fixed to the rail foot of the rail by the elastic metal clamp, thereby forming a vibration reduction and noise reduction system through the damping plate and the mass block, so that the mass block generates resonance when the rail vibrates to absorb the vibration of the rail, and the damping plate consumes the vibration energy to reduce the rail radiation noise, and at the same time, the longitudinal direction of the mass block can be limited by the two fixing fixtures that are abutted or clamped at the corresponding ends of the mass block. Therefore, the elastic metal clamp only needs to limit the lateral and vertical displacements of the mass block, so that the load of the elastic metal clamp is reduced, which can ensure the stability of the elastic metal clamp; the mass block is fixed by the elastic metal clamp and the fixing fixture at the same time, which can avoid the longitudinal movement of the mass block and affect the vibration absorption effect, so that the vibration absorber can fully exert its vibration reduction performance, delay the generation of rail corrugation, improve the vibration absorption effect, help alleviate the vibration and noise problems caused by wheel-rail interaction, and promote the sustainable development of urban rail transit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] In the attached picture:

[0022] Figure 1 This is a schematic diagram of the structure of the embodiment of the utility model which can reduce vibration and noise and is installed on a rail;

[0023] Figure 2 This is a schematic diagram of the side view structure of the embodiment of the utility model which can reduce vibration and noise and is installed on a rail;

[0024] Figure 3 It is a side structural schematic diagram of the card block according to an embodiment of the utility model.

[0025] Marks and corresponding parts names in the attached drawings:

[0026] 10-damping plate, 11-honeycomb hole, 20-mass block, 30-elastic metal clamp, 40-fixing fixture, 41-block, 41a-through hole, 41b-abutting recess, 42-fixing bolt, 43-pressing portion, 44-flexible gasket, 45-support foot, 50-rail. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0028] In the description of the embodiments of the present application, the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the application are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element 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.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "opened", "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 the present invention can be understood according to specific circumstances.

[0030] Example:

[0031] Combination Figure 1 The utility model provides a rail vibration absorber capable of reducing vibration and noise, comprising: a damping plate 10, which can be fitted and installed at the waist of a rail 50; a mass block 20, which has a length less than that of the damping plate 10 and is fitted on the outer side of the damping plate 10 in use; an elastic metal clamp 30, which is clamped in the middle of the length direction of the mass block 20 and can clamp the mass block 20 on the rail foot of the rail 50 corresponding to the damping plate 10; a fixing clamp 40, which is provided with two clamping blocks 41, and the two clamping blocks 41 can be fixedly installed on both sides of the rail 50 corresponding to the damping plate 10; wherein the fixing clamp 40 is provided with two, and the two fixing clamps 40 are respectively used to fix the corresponding ends of the damping plate 10 on the rail 50, and in the working state, the inner sides of the two fixing clamps 40 are against or clamped on the corresponding ends of the mass block 20.

[0032] Combination Figure 2 Specifically, the damping plate 10 is a profile having honeycomb holes 11, and the outer gaps of the honeycomb holes 11 of the damping plate 10 are filled with rubber, so that when the rail 50 vibrates, the damping plate 10 is vibrated, and the honeycomb holes 11 vibrate accordingly, causing shear deformation of the rubber in the gap, thereby consuming the vibration energy of the rail 50 and reducing the noise radiation of the rail 50.

[0033] It is understood that the cross-sectional shape of the damping plate 10 is adapted to the shape of the rail waist, and the damping of the damping plate 10 should be much higher than the other components on the vibration absorber. To ensure the stability of the connection between the damping plate 10 and the rail 50, an adhesive can be used to bond the damping plate 10 to the rail waist of the rail 50.

[0034] Preferably, the damping plate 10 is an aluminum alloy profile to facilitate damping production and processing.

[0035] Combine again Figure 1It should be understood that the mass block 20 is a block made of rubber and a material with a high density, and its weight is relatively large. Therefore, in this embodiment, two elastic metal clips 30 are provided, and the two elastic metal clips 30 are spaced apart and clamped on the side wall of the mass block 20 in the length direction to improve the installation stability of the mass block 20. The weight of the mass block 20 is determined according to the actual parameters of the track.

[0036] Combination Figure 2 The two blocks 41 of the fixing fixture 40 are connected by fixing bolts 42 to facilitate the installation of the fixing fixture 40 .

[0037] Combination Figure 3 Specifically, a pressing portion 43 is vertically provided at the upper end of the clamping block 41 , and the pressing portion 43 is used to press the damping plate 10 ; a through hole 41 a is provided at the lower end of the clamping block 41 , and the through hole 41 a is used to pass the rod of the fixing bolt 42 .

[0038] Among them, the pressing part 43 is usually connected to the main body of the clamping block 41 through a supporting leg. In the working state, the pressing part 43 presses the damping plate 10 onto the rail waist, and a large surplus is set between the pressing part 43 and the matching surface of the damping plate 10 to apply a certain pressure to the damping plate 10 to ensure that the damping plate 10 is tightly attached to the rail waist and the rail jaw.

[0039] In addition, abutment recess 41b is provided inside the clamping block 41, and the abutment recess 41b is used to accommodate the foot of the rail 50, and the side surfaces of the abutment recess 41b have a large roughness. In the working state, the foot of the rail is clamped in the abutment recess 41b, which can ensure the stability of the connection between the clamping block 41 and the rail 50 and prevent the fixing fixture 40 from longitudinal movement.

[0040] Meanwhile, in this embodiment, the position of the clamping block 41 corresponding to the rail foot is provided with a boss, which is used to limit the longitudinal position of the mass block 20. That is, in the working state, the inner side of the fixing fixture 40 abuts against the corresponding end of the mass block 20.

[0041] On this basis, the fixing clamp 40 also includes a flexible gasket 44, which is located between the lower ends of the two blocks 41, so that the connection between the two blocks 41 is converted into a flexible connection through the flexible gasket 44, thereby reducing the transmission of vibration of the rail 50 on both sides of the fixing clamp 40.

[0042] Generally speaking, the flexible gasket 44 is sleeved outside the rod of the fixing bolt 42 to ensure the stability of the installation of the flexible gasket 44 .

[0043] It can be understood that the side walls of the block 41 used to abut the rail 50 are successively provided with an insulating layer and a rubber damping layer. The insulating layer can insulate the fixing fixture 40 from the rail 50, while the rubber damping layer can, on the one hand, avoid a rigid collision between the rail 50 and the fixing fixture 40 to protect the insulating layer and reduce noise, and on the other hand, can ensure that the block 41 and the rail 50 can fit well.

[0044] In summary, the rail vibration absorber capable of reducing vibration and noise provided in this embodiment has a damping plate 10 fixed to the waist of the rail 50 by a fixing clamp 40, and a mass block 20 fixed to the foot of the rail 50 by an elastic metal clip 30, thereby forming a vibration reduction system through the damping plate 10 and the mass block 20 to generate resonance when the rail 50 vibrates to absorb the vibration of the rail 50 and the noise generated.

[0045] At the same time, by having two fixing clamps 40 abutting or clamping on the corresponding ends of the mass block 20, the longitudinal movement of the mass block 20 can be limited. Therefore, the elastic metal clamp 30 only needs to limit the lateral and vertical displacements of the mass block 20, so that the load of the elastic metal clamp 30 is reduced, and the stability of the elastic metal clamp 30 can be ensured. The mass block 20 is fixed by the elastic metal clamp 30 and the fixing clamp 40 at the same time, which can prevent the mass block 20 from easily moving longitudinally and affecting the vibration absorption effect, thereby delaying the generation of corrugation of the rail 50.

[0046] In summary, the rail 50 vibration absorber provided in this embodiment can ensure that the damping plate 10 and the mass block 20 are stably maintained at the mid-span position of the rail, reduce their longitudinal movement, enable the vibration absorber to fully exert its vibration reduction performance, delay the generation of rail 50 corrugation, improve the vibration absorption effect, help alleviate the vibration and noise problems caused by wheel-rail interaction, and promote the sustainable development of urban rail transit.

[0047] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A rail vibration absorber capable of reducing vibration and noise, characterized in that: include: The damping plate (10) can be fitted and installed at the waist of the steel rail (50); A mass block (20) having a length less than that of the damping plate (10) and being attached to the outer side of the damping plate (10) when in use; An elastic metal clip (30) is clamped at the middle portion of the mass block (20) in the length direction, and is capable of clamping the mass block (20) on the rail foot of the steel rail (50) corresponding to the damping plate (10); A fixing fixture (40) is provided with two clamping blocks (41), and the two clamping blocks (41) can be fixedly mounted on both sides of the steel rail (50) corresponding to the damping plate (10); There are two fixing clamps (40), and the two fixing clamps (40) are respectively used to fix the corresponding ends of the damping plate (10) on the rail (50), and in a working state, the inner sides of the two fixing clamps (40) abut against or are clamped on the corresponding ends of the mass block (20).

2. The rail vibration absorber capable of reducing vibration and noise according to claim 1, characterized in that: The damping plate (10) is a profile having honeycomb holes (11), and the outer gaps of the honeycomb holes (11) of the damping plate (10) are filled with rubber.

3. The rail vibration absorber capable of reducing vibration and noise according to claim 2, characterized in that: The damping plate (10) is an aluminum alloy profile.

4. The rail vibration absorber capable of reducing vibration and noise according to claim 1, characterized in that: Two elastic metal clips (30) are provided, and the two elastic metal clips (30) are spaced apart and clamped on the side wall of the mass block (20) in the length direction.

5. The rail vibration absorber capable of reducing vibration and noise according to claim 1, characterized in that: The two clamping blocks (41) are connected via a fixing bolt (42).

6. The rail vibration absorber capable of reducing vibration and noise according to claim 5, characterized in that: A pressing portion (43) is vertically arranged at the upper end of the clamping block (41), and the pressing portion (43) is used to press the damping plate (10); A through hole (41a) is provided at the lower end of the clamping block (41), and the through hole (41a) is used for passing the rod portion of the fixing bolt (42).

7. The rail vibration absorber capable of reducing vibration and noise according to claim 5, characterized in that: The fixing fixture (40) further comprises a flexible gasket (44), wherein the flexible gasket (44) is located between the lower ends of the two clamping blocks (41).

8. The rail vibration absorber capable of reducing vibration and noise according to claim 7, characterized in that: The flexible gasket (44) is sleeved outside the rod portion of the fixing bolt (42).

9. The rail vibration absorber capable of reducing vibration and noise according to any one of claims 5 to 8, characterized in that: An abutting recess (41b) is also provided on the inner side of the clamping block (41), and the abutting recess (41b) is used to accommodate the rail foot of the steel rail (50).

10. The rail vibration absorber capable of reducing vibration and noise according to claim 1, characterized in that: The side walls of the clamping block (41) used for contacting the steel rail (50) are sequentially provided with an insulating layer and a rubber damping layer.

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