Vibration and noise reduction device for steel rail

Abstract

The utility model provides a vibration and noise reduction device for a steel rail, which relates to the technical field of railway tracks, and comprises at least two rubber damping layers respectively coated on rail waist parts on two sides of the steel rail; the restraining assembly is arranged on the side, away from the steel rail, of the rubber damping layer, and the restraining assembly is used for pressing the rubber damping layer to the rail waist part; the mass blocks are arranged in the rubber damping layer, and the mass blocks extend in the length direction of the steel rail; and the elastic piece is arranged between the two mass blocks and is used for connecting the two mass blocks. When vibration is transmitted to the mass block, the mass block vibrates along with the mass block, the elastic piece restrains the vibration amplitude and the vibration frequency of the mass block, and compared with a traditional mode that vibration of the mass block is restrained through rubber, the mass block can have a wide frequency modulation range through the elastic piece with a smaller elastic coefficient, and a better vibration reduction effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of railway tracks, and more specifically, to a rail vibration and noise reduction device. Background Art

[0002] With the development of rail transit, people pay more and more attention to the harm caused by vibration and noise to human health, the accuracy of precision equipment, ancient buildings and cultural relics. Controlling vibration and noise from the source of the rail is a relatively effective measure. For the vibration and noise generated by the rail part, at present, mainly damping rails and rail dynamic vibration absorbers are used for control, and the specific forms are also relatively diverse. For example, rubber plates are coated on both sides of the rail, and damping elements are embedded in the rubber plates, and the vibration reduction effect is achieved through the vibration of the damping elements. However, in this kind of damper, the mass block is restricted by the rubber, and the vibration frequency modulation range is narrow, and the vibration reduction effect is not ideal. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a rail vibration and noise reduction device to improve the above problems. To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0004] A rail vibration and noise reduction device, comprising:

[0005] At least two rubber damping layers, which are respectively coated on the web parts on both sides of the rail;

[0006] A constraint component, which is arranged on the side of the rubber damping layer away from the rail, and the constraint component is used to press the rubber damping layer against the web part;

[0007] At least two mass blocks, which are arranged inside the rubber damping layer, and the mass blocks extend along the length direction of the rail;

[0008] An elastic member, which is arranged between the two mass blocks and connects the two mass blocks.

[0009] Optionally, the constraint component includes a constraint plate and a spring clip, and the constraint plate is attached to the side surface of the rubber damping layer;

[0010] The spring clip passes through the bottom of the rail, and both ends of the spring clip are respectively pressed against the constraint plates on both sides of the rail.

[0011] Optionally, the constraint component includes two spring clips, and the two spring clips are respectively located at both ends of the rubber damping layer.

[0012] Optionally, at least three elastic members are provided, and the three elastic members are respectively located at both ends and the middle part of the mass block.

[0013] Optionally, the elastic member is a spring.

[0014] Optionally, a cavity for installing the mass block is provided inside the rubber damping layer, and an opening communicating with the cavity is provided on the upper end surface of the rubber damping layer.

[0015] Optionally, the rubber damping layer includes a plugging member, and the plugging member is arranged at the opening of the upper end surface of the rubber damping layer.

[0016] Optionally, a hanging buckle groove is provided at the upper end of the rubber damping layer, and a hanging buckle strip bent downward is provided at the upper end of the constraint plate, and the hanging buckle strip is matched with the hanging buckle groove.

[0017] Optionally, the thickness of the rubber damping layer is 6 - 10 cm.

[0018] The beneficial effects of the present utility model are as follows:

[0019] In this application, a mass block is arranged inside the rubber damping layer, and an elastic member is arranged between the mass blocks. Compared with the traditional vibration restraint of the mass block by rubber, the vibration is absorbed by the elastic member with a smaller elastic coefficient, which can enable the mass block to have a wider frequency modulation range, thereby achieving a better vibration damping effect, and the vibration damping effect of the mass block will not be reduced due to the aging of the rubber.

[0020] Other features and advantages of the present utility model will be described in the subsequent description, and some of them will be obvious from the description, or can be understood by implementing the embodiments of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of the rail vibration damping and noise reduction device in the embodiment of the present application;

[0023] Figure 2 It is a cross-sectional view of the rail vibration damping and noise reduction device in the embodiment of the present application;

[0024] Figure 3 It is an exploded view of the rubber damping layer in the embodiment of the present application.

[0025] Symbol description: 1. Rubber damping layer; 101. Plugging member; 2. Constraint assembly; 201. Constraint plate; 202. Elastic strip; 3. Cavity; 4. Mass block; 5. Elastic member. Detailed Implementation Modes

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present utility model, terms such as "first" and "second" are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0028] Regarding the vibration and noise control measures for the rail part, currently in the industry, mainly damping rails and rail dynamic vibration absorbers are used, and there are also many specific forms. For example, Chinese Patent No. 201710655786.4 discloses a piston-type rail damper in which damping elements are embedded in a rubber plate, and the vibration damping effect is achieved through the vibration of the damping elements. However, in this damper, the mass block is restricted by the rubber, and the vibration frequency modulation range is narrow, and the vibration damping effect is not very good.

[0029] To solve the problems of the prior art, as Figure 1 shown, the present application provides a rail vibration and noise reduction device, including:

[0030] At least two rubber damping layers 1, and the two rubber damping layers 1 are respectively coated on the web parts on both sides of the rail;

[0031] A constraint assembly 2, the constraint assembly 2 is arranged on the side of the rubber damping layer 1 away from the rail, and the constraint assembly 2 is used to press the rubber damping layer 1 against the web part;

[0032] At least two mass blocks 4, the mass blocks 4 are arranged inside the rubber damping layer 1, the two mass blocks 4 are arranged at intervals in the height direction of the rail, and the mass blocks 4 extend in the length direction of the rail;

[0033] An elastic member 5, the elastic member 5 is arranged between the two mass blocks 4 and connects the two mass blocks 4.

[0034] When vibration is transmitted to the mass block 4, the mass block 4 vibrates accordingly, while the elastic member 5 can restrict the vibration amplitude and vibration frequency of the mass block 4. Compared with the traditional method of restricting the vibration of the mass block 4 through rubber, using the elastic member 5 with a smaller elastic coefficient can enable the mass block 4 to have a wider frequency modulation range and achieve a better vibration reduction effect.

[0035] As Figure 2 shown, as an alternative embodiment, the constraint assembly 2 includes a constraint plate 201 and a spring strip 202, and the constraint plate 201 is attached to the side surface of the rubber damping layer 1;

[0036] The spring strip 202 passes through the bottom of the rail, and both ends of the spring strip 202 are respectively pressed against the constraint plates 201 on both sides of the rail.

[0037] The spring strip 202 spans across the bottom of the rail, pressing and fixing the constraint plates 201 on both sides of the rail and the rubber damping layer 1. By selecting appropriate materials and designing the shape, the clamping force of the spring strip 202 can reach 600 - 1000 N, ensuring that the constraint plate 201 and the rubber damping layer 1 do not displace under the action of vibration; the constraint plate 201 is made of a rigid material. Due to the rigidity of the constraint plate 201, it can better provide support for the spring strip 202 and transmit the pressing force, thereby being able to firmly constrain and fix the rubber damping layer 1.

[0038] As an alternative embodiment, the constraint assembly 2 includes two spring strips 202, and the two spring strips 202 are respectively located at both ends of the rubber damping layer 1. The spring strips 202 at both ends can ensure that the rubber damping layer 1 is pressed against the rail waist. Of course, more spring strips 202 can also be provided to improve the fixing effect.

[0039] As Figure 3 shown, as an alternative embodiment, since the device is arranged between two fasteners of the rail, the length of the mass block 4 is relatively long. To provide a better constraint effect, at least three elastic members 5 are provided, and the three elastic members 5 are respectively located at both ends and the middle part of the mass block 4.

[0040] As an alternative embodiment, the elastic member 5 is a spring. Both ends of the spring can be fixed to the mass block 4 by bonding or welding.

[0041] As an alternative embodiment, as Figure 3As shown in the figure, to facilitate the installation of the mass block 4 and the spring in the rubber damping layer 1, a cavity 3 for installing the mass block 4 is provided inside the rubber damping layer 1, and an opening communicating with the cavity 3 is provided on the upper end surface of the rubber damping layer 1. After assembling the two mass blocks 4 and the spring into an integral body, the mass block 4 and the spring as a whole are placed into the cavity 3 from the opening.

[0042] As an alternative embodiment, as Figure 3 shown, the rubber damping layer 1 includes a plugging member 101, and the plugging member 101 is arranged at the opening on the upper end surface of the rubber damping layer 1. After the mass block 4 and the spring are installed, the opening is plugged with the plugging member 101, so that the mass block 4 and the spring are completely sealed in the rubber damping layer 1. In this embodiment, the upper end of the rubber damping layer 1 is plugged. Of course, the side surface or the cross section can also be plugged, and the actual installation depends on the opening direction of the cavity 3.

[0043] As an alternative embodiment, the plugging member 101 is snap-fitted with the opening of the rubber damping layer 1. A transverse first card slot is arranged at the lower end of the side of the plugging member 101 facing the rail, and a first card protrusion is correspondingly arranged at the opening of the rubber damping layer 1. The first card slot and the first card protrusion can be mutually engaged; a longitudinal second card slot is arranged on the lower surface of the end of the plugging member 101 away from the rail, and a second card protrusion is correspondingly arranged at the opening of the rubber damping layer 1. The second card slot and the second card protrusion can be mutually engaged. Through the snap-fitting connection, convenient and quick installation and disassembly can be realized, and the rubber damping layer 1, the mass block 4 and the elastic member 5 can be replaced according to requirements.

[0044] As an alternative embodiment, a hanging buckle groove is provided at the upper end of the rubber damping layer 1, and a hanging buckle strip bent downward is provided at the upper end of the constraint plate 201. The hanging buckle strip is matched with the hanging buckle groove. When installing the constraint plate 201, the hanging buckle strip at the upper end of the constraint plate 201 is hung in the hanging buckle groove. The profile surface of the constraint plate 201 is attached to the profile surface of the rubber damping layer 1, and the lower end is bent toward the rail direction to form a "[-]" shape to wrap the rubber damping layer 1.

[0045] When the hanging buckle groove is arranged on the plugging member 101, after the plugging member 101 is snap-fitted with the opening, the plugging member 101 can be further constrained and fixed by the pressing and constraining action of the constraint plate 201 to prevent the plugging member 101 from shifting.

[0046] As an alternative embodiment, the thickness of the rubber damping layer 1 is 6-10 cm; the width of the mass block 4 is 3-5 cm.

[0047] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0048] As described above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or replacements, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A rail vibration and noise reduction device, characterized in that, Comprising: At least two rubber damping layers (1), and the two rubber damping layers (1) are respectively coated on the web parts on both sides of the rail; A constraint assembly (2), the constraint assembly (2) is arranged on the side of the rubber damping layer (1) away from the rail, and the constraint assembly (2) is used to press the rubber damping layer (1) against the web part; At least two mass blocks (4), the mass blocks (4) are arranged inside the rubber damping layer (1), and the mass blocks (4) extend along the length direction of the rail; An elastic member (5), the elastic member (5) is arranged between the two mass blocks (4) and connects the two mass blocks (4).

2. The rail vibration and noise reduction device according to claim 1, characterized in that, The constraint assembly (2) includes a constraint plate (201) and a spring clip (202), and the constraint plate (201) is attached to the side surface of the rubber damping layer (1); The spring clip (202) passes through the bottom of the rail, and both ends of the spring clip (202) are respectively pressed against the constraint plates (201) on both sides of the rail.

3. The rail vibration and noise reduction device according to claim 2, characterized in that, The constraint assembly (2) includes two spring clips (202), and the two spring clips (202) are respectively located at both ends of the rubber damping layer (1).

4. A rail vibration and noise reduction device according to claim 1, characterized in that, At least three elastic members (5) are provided, and the three elastic members (5) are respectively located at both ends and the middle part of the mass block (4).

5. The rail vibration and noise reduction device according to claim 1, characterized in that The elastic member (5) is a spring.

6. A rail vibration and noise reduction device according to claim 1, characterized in that A cavity (3) for installing the mass block (4) is provided inside the rubber damping layer (1), and an opening communicating with the cavity (3) is provided on the upper end surface of the rubber damping layer (1).

7. The rail vibration and noise reduction device according to claim 6, characterized in that, The rubber damping layer (1) includes a plugging member (101), and the plugging member (101) is arranged at the opening on the upper end surface of the rubber damping layer (1).

8. A rail vibration and noise reduction device according to claim 7, characterized in that, The plugging member (101) is snap-fitted with the opening of the rubber damping layer (1).

9. The rail vibration and noise reduction device according to claim 2, characterized in that, A hanging hook groove is provided at the upper end of the rubber damping layer (1), and a hanging hook strip bent downward is provided at the upper end of the constraint plate (201), and the hanging hook strip is matched with the hanging hook groove.

10. The rail vibration and noise reduction device according to claim 1, characterized in that, The thickness of the rubber damping layer (1) is 6 - 10 cm.

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