Filling method of damping layers of wheel noise reduction block, positioning structure and wheel noise reduction block

Abstract

The invention provides a filling method of damping layers of a wheel noise reduction block. A damping material is filled into gap layers of an interlayer structure of the wheel noise reduction block by using a vulcanizing and bonding manner to form damping layers; positioning blocks are used for positioning constraining layers of the interlayer structure during vulcanizing and bonding so as to prevent the constraining layers from deforming in the vulcanizing process; the positioning blocks are arranged at the edges of the interlayer structure and one part of each positioning block stretches into the gap layers to support and position the constraining layers during vulcanizing, so that the deformation of the interlayer structure in the vulcanizing process is avoided. According to the filling method, a vulcanization molding manner is adopted; the bonding strength between the damping layers and the interlayer structure is ensured; the uniformity degree and the beautiful degree of the damping layers are ensured; the positioning blocks are used for positioning and controlling the constraining layers of the interlayer structure during vulcanizing and filling; the problem of deformation of the constraining layers and mounting plates caused by high freedom degree of the ends in the vulcanizing process can be avoided, so that the non-uniform thickness of the damping layers can be avoided; the production quality and the size deviation of the wheel noise reduction block are ensured; and the effect of reducing vibration and noise can be improved.

Description

technical field

[0001] The invention relates to a method for filling a damping layer of a wheel noise reduction block, a positioning structure and a wheel noise reduction block, and belongs to the technical field of rail vehicle vibration reduction and noise reduction. Background technique

[0002] When the train is running, the wheels roll on the track. Due to the roughness of the surface and the unevenness of the wheel-rail tread, the modal vibration response of the wheel is excited, resulting in strong vibration and structural noise, which is radiated to the air through the wheel surface, which affects the passengers. The comfort level also brings huge noise pollution around the railway. If a noise reduction structure or material is installed on the wheel, the purpose of reducing the noise radiation level of the wheel can be achieved by suppressing the energy of the vibration and noise source. There are currently four types of current wheel noise reduction technologies: ...

Examples

Embodiment 1

[0059] Such as Figure 3-Figure 6 As shown, the wheel noise reduction block includes a sandwich structure 2 and a damping layer 3. The sandwich structure 2 includes a strip-shaped constraining layer 22, an intermediate body 24 and a mounting plate 21. The sandwich structure 2 is an integrally cast rigid layer, and the constraining layer 22 and the mounting plate 21 are connected as a whole through the intermediate body 24 in the middle, there is a gap layer 23 at both ends of each two layers of the sandwich structure 2, and the damping layer 3 is arranged in the gap layer 23 of the sandwich structure 2, and the sandwich structure 2 vulcanization bonding and fixing, the end face and / or side of the damping layer 3 has a positioning groove 31.

[0060] In order to solve the problem of metal deformation during the welding process of the constraining layer 22 and the mounting plate 21, and the manufacturing process of the sandwich structure 2 is complex, difficult, poor in consiste...

Embodiment 2

[0068] The basic method and principle of this embodiment are the same as those of the above embodiment, the difference is that: Figure 7As shown, the intermediate of the sandwich structure 2 is a gasket 27, the constraining layer 22 and the gasket 27 are one piece or a plurality of equal numbers, the mounting plate 21 is located at the lowest end, and the gasket 27 and the constraining layer 22 are alternately arranged on the mounting plate Above, the gasket 27 of the lowest layer is in contact with the mounting plate 21, the length of the gasket 27 is less than the length of the constraining layer 22, the mounting plate 21, the constraining layer 22 and the gasket 27 are integrally connected by rigidity, the constraining layer 22 and the mounting plate 21 or between the constraining layer 22 and the mounting plate 21 and between the constraining layer 22 and the constraining layer 22, there is a gap layer 23 with an equal distance, and in the middle of the integrally formed m...

Embodiment 3

[0071] The basic method and principle of this embodiment are the same as those of the above embodiment, the difference is that: Figure 8 As shown, the sandwich structure 2 includes a mounting plate 21 and a first outer constraining layer 221, the intermediate body is a mandrel 28, a suspended inner constraining layer 222 arranged between the mounting plate 21 and the first outer constraining layer 221, and a hollow core The shaft 28 passes through the suspended inner constrained layer 222 and one end of the mandrel 28 is in contact with the mounting plate 21, the other end of the mandrel 28 is in contact with the first outer constrained layer 221, and the suspended inner constrained layer 222 is vulcanized and glued by the damping layer 3. Connected between the mounting plate 21 and the first outer constraining layer 221, wherein the mandrel 28 is one, the middle position of the sandwich structure 2 is set, the middle position of the sandwich structure 2 has a mounting hole 25...

technical field

[0001] The invention relates to a method for filling a damping layer of a wheel noise reduction block, a positioning structure and a wheel noise reduction block, and belongs to the technical field of rail vehicle vibration reduction and noise reduction. Background technique

[0002] When the train is running, the wheels roll on the track. Due to the roughness of the surface and the unevenness of the wheel-rail tread, the modal vibration response of the wheel is excited, resulting in strong vibration and structural noise, which is radiated to the air through the wheel surface, which affects the passengers. The comfort level also brings huge noise pollution around the railway. If a noise reduction structure or material is installed on the wheel, the purpose of reducing the noise radiation level of the wheel can be achieved by suppressing the energy of the vibration and noise source. There are currently four types of current wheel noise reduction technologies: ...

Examples

Embodiment 1

[0059] Such as Figure 3-Figure 6 As shown, the wheel noise reduction block includes a sandwich structure 2 and a damping layer 3. The sandwich structure 2 includes a strip-shaped constraining layer 22, an intermediate body 24 and a mounting plate 21. The sandwich structure 2 is an integrally cast rigid layer, and the constraining layer 22 and the mounting plate 21 are connected as a whole through the intermediate body 24 in the middle, there is a gap layer 23 at both ends of each two layers of the sandwich structure 2, and the damping layer 3 is arranged in the gap layer 23 of the sandwich structure 2, and the sandwich structure 2 vulcanization bonding and fixing, the end face and / or side of the damping layer 3 has a positioning groove 31.

[0060] In order to solve the problem of metal deformation during the welding process of the constraining layer 22 and the mounting plate 21, and the manufacturing process of the sandwich structure 2 is complex, difficult, poor in consiste...

Embodiment 2

[0068] The basic method and principle of this embodiment are the same as those of the above embodiment, the difference is that: Figure 7As shown, the intermediate of the sandwich structure 2 is a gasket 27, the constraining layer 22 and the gasket 27 are one piece or a plurality of equal numbers, the mounting plate 21 is located at the lowest end, and the gasket 27 and the constraining layer 22 are alternately arranged on the mounting plate Above, the gasket 27 of the lowest layer is in contact with the mounting plate 21, the length of the gasket 27 is less than the length of the constraining layer 22, the mounting plate 21, the constraining layer 22 and the gasket 27 are integrally connected by rigidity, the constraining layer 22 and the mounting plate 21 or between the constraining layer 22 and the mounting plate 21 and between the constraining layer 22 and the constraining layer 22, there is a gap layer 23 with an equal distance, and in the middle of the integrally formed m...

Embodiment 3

[0071] The basic method and principle of this embodiment are the same as those of the above embodiment, the difference is that: Figure 8 As shown, the sandwich structure 2 includes a mounting plate 21 and a first outer constraining layer 221, the intermediate body is a mandrel 28, a suspended inner constraining layer 222 arranged between the mounting plate 21 and the first outer constraining layer 221, and a hollow core The shaft 28 passes through the suspended inner constrained layer 222 and one end of the mandrel 28 is in contact with the mounting plate 21, the other end of the mandrel 28 is in contact with the first outer constrained layer 221, and the suspended inner constrained layer 222 is vulcanized and glued by the damping layer 3. Connected between the mounting plate 21 and the first outer constraining layer 221, wherein the mandrel 28 is one, the middle position of the sandwich structure 2 is set, the middle position of the sandwich structure 2 has a mounting hole 25...

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