Wheel noise reduction device and noise reduction method

Abstract

The application provides a wheel noise reduction device and a noise reduction method, and belongs to the technical field of wheel noise reduction. The wheel noise reduction device comprises a noise reduction ring, multiple sets of elastic components and multiple sets of noise reduction components. The noise reduction ring is used for being mounted on a wheel rim. Multiple noise reduction spaces are arranged in the noise reduction ring at intervals along the circumference of the noise reduction ring, and the noise reduction spaces are connected with the outer peripheral wall of the noise reduction ring. The multiple sets of elastic components are arranged in the noise reduction ring at intervals along the circumference of the noise reduction ring. The multiple sets of noise reduction components correspond to the multiple noise reduction spaces one by one, the noise reduction components are arranged in the corresponding noise reduction spaces, and are connected with the recessed inner wall of the noise reduction space. Multiple sound holes are further arranged on the noise reduction components. The noise reduction method adopts the above noise reduction device. The wheel noise reduction device and the noise reduction method provided by the application can greatly improve the noise reduction effect of the wheel and reduce the noise pollution generated by the wheel.

Description

Technical Field

[0001] This invention belongs to the field of wheel noise reduction technology, and more specifically, relates to a wheel noise reduction device and a noise reduction method. Background Technology

[0002] The rapid pace of urbanization has brought greater traffic pressure. The resulting noise problem has also attracted increasing attention, with the frequent vibrations and noise from subway operations becoming an unavoidable issue in people's lives and work. Controlling vibrations and noise from urban rail transit is an essential measure to improve passenger comfort.

[0003] In existing technologies, to reduce the noise generated by vehicle wheels during operation, vibration damping and noise reduction devices are typically added to the wheels. A commonly used noise reduction solution involves machining a groove in the wheel rim, embedding a metal ring in the groove, and then connecting the two ends of the metal ring. The dry friction damping caused by the relative motion between the metal ring and the vehicle body when subjected to external impact is the fundamental reason for vibration damping and noise reduction in this method. However, dry friction damping can only absorb the noise energy generated by wheel vibration, and its overall noise reduction effect is relatively poor. Summary of the Invention

[0004] The purpose of this invention is to provide a wheel noise reduction device and method, aiming to solve the technical problem of poor noise reduction effect of existing noise reduction devices.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] In a first aspect, a wheel noise reduction device is provided, comprising:

[0007] A noise reduction ring is used to be installed on the wheel rim; the noise reduction ring has multiple noise reduction spaces spaced around its circumference.

[0008] Multiple sets of elastic components are spaced circumferentially within the noise reduction ring; and

[0009] Multiple noise reduction components are provided, each corresponding to one of the noise reduction spaces. The noise reduction components are disposed within the corresponding noise reduction spaces and connected to the recessed inner wall of the noise reduction spaces. The noise reduction components are also provided with multiple sound-absorbing holes.

[0010] In conjunction with the first aspect, in one possible implementation, the noise reduction ring includes a noise reduction inner ring, a noise reduction outer ring, and a sound-absorbing layer located between the noise reduction inner ring and the noise reduction outer ring, wherein the sound-absorbing layer is filled with sound-absorbing material; wherein, a plurality of the elastic components are disposed within the sound-absorbing layer.

[0011] In some embodiments, the sound-absorbing layer is provided with an inwardly recessed arc-shaped partition plate, and the partition plate and the noise-reducing outer ring enclose the noise-reducing space.

[0012] In some embodiments, the resilient component includes:

[0013] Two connecting plates are spaced apart in the sound-absorbing layer along the circumference of the noise reduction ring, and the two ends of each connecting plate are respectively connected to the inner noise reduction ring and the outer noise reduction ring;

[0014] The first elastic element extends circumferentially along the noise reduction ring, and its two ends are respectively connected to the two connecting plates.

[0015] For example, both the partition plate and the connecting plate are made of vulcanized metal and rubber materials.

[0016] In conjunction with the first aspect, in one possible implementation, the noise reduction component includes:

[0017] The radiating tube has one end connected to the inner wall of the noise reduction space near the center of the noise reduction ring, and the other end extends outward along the radial direction of the noise reduction ring; the radiating tube is provided with a sound radiation channel.

[0018] A silencer tube is disposed at the extension end of the radiating tube and communicates with the sound radiation channel; the silencer tube is provided with a plurality of silencer holes; and

[0019] A sealing cap is located at the end of the silencer tube away from the radiation tube, and is used to intercept sound wave energy entering the silencer tube;

[0020] The sound wave energy entering the radiation tube enters the silencing tube through the sound radiation channel and is radiated to the inner wall of the noise reduction space through the silencing hole.

[0021] In some embodiments, the silencing tube includes a plurality of rubber rings arranged radially spaced along the noise reduction ring, and each rubber ring is provided with a plurality of silencing holes spaced circumferentially along the rubber ring.

[0022] For example, the diameter of the plurality of rubber rings gradually decreases along the radial direction of the noise reduction ring.

[0023] In some embodiments, one side of the sealing cover is hinged to the muffler tube; the sealing cover has a closed state that closes the muffler tube, and the sealing cover also has an open state that swings to release the muffler tube;

[0024] A second elastic element is connected between the sealing cover and the silencer tube, and the second elastic element is used to limit the sealing cover to the closed state.

[0025] When the noise energy of the wheel exceeds the absorption capacity of the noise reduction device, the other side of the sealing cover is used to swing around its connecting end, so that the sealing cover swings from the closed state to the open state.

[0026] Compared with the prior art, the solution shown in this application embodiment allows the sound wave energy to be continuously absorbed between the noise reduction ring, the noise reduction space, and the noise reduction component. The unabsorbed sound wave energy is then released into the noise reduction space through the noise reduction component for further absorption and dissipation. Specifically, noise energy from the wheel can be absorbed into the noise reduction ring. The elastic component buffers the sound wave energy absorbed by the noise reduction ring. The noise reduction component can absorb sound wave energy that the noise reduction ring cannot directly absorb through the noise reduction space and release it into the noise reduction space through the silencing holes. This allows energy that the noise reduction ring cannot directly absorb to be continuously absorbed and released within the noise reduction space and the noise reduction component until the noise energy is completely absorbed, thereby improving the noise reduction effect of the wheel and reducing noise pollution.

[0027] Secondly, this application also provides a noise reduction method using the aforementioned wheel noise reduction device, comprising the following steps:

[0028] S1. The noise reduction ring absorbs noise energy on the wheel;

[0029] S2. The noise reduction ring absorbs part of the sound wave energy to compress the elastic component, so that part of the sound wave energy is converted into the elastic potential energy of the elastic component to buffer the large amount of sound wave energy on the noise reduction ring.

[0030] S3. The unabsorbed sound wave energy enters the noise reduction space through the noise reduction ring, and the sound wave energy entering the noise reduction space is absorbed by the noise reduction component; the unabsorbed sound wave energy entering the noise reduction component is released back into the noise reduction space through the sound-absorbing hole, and is absorbed a second time by the noise reduction ring and the noise reduction space.

[0031] S4. Proceed to step S3 again and continue until the sound wave energy is completely absorbed.

[0032] The noise reduction method provided in this application, by employing the aforementioned wheel noise reduction device, possesses all the beneficial effects of the aforementioned wheel noise reduction device, thereby improving the noise reduction effect of the wheel and reducing noise pollution. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the wheel noise reduction device provided in an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the installation structure of the noise reduction component provided in an embodiment of the present invention.

[0036] In the diagram: 1. Noise reduction ring; 11. Inner noise reduction ring; 12. Sound absorption layer; 13. Outer noise reduction ring; 14. Partition plate; 15. Noise reduction space;

[0037] 2. Elastic component; 21. Connecting plate; 22. First elastic element;

[0038] 3. Noise reduction components; 31. Radiation tube; 311. Sound radiation channel; 32. Silencing tube; 321. Silencing hole; 33. Sealing cover; 331. Second elastic element. Detailed Implementation

[0039] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0040] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on that other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0041] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a number" means two or more, unless otherwise explicitly specified.

[0042] Please refer to the following: Figure 1 and Figure 2The present invention will now describe the wheel noise reduction device and method provided. The wheel noise reduction device includes a noise reduction ring 1, multiple sets of elastic components 2, and multiple sets of noise reduction components 3; the noise reduction ring 1 is used to install on the wheel rim; multiple noise reduction spaces 15 are provided at intervals along the circumference of the noise reduction ring 1; multiple sets of elastic components 2 are provided at intervals along the circumference of the noise reduction ring 1; the multiple sets of noise reduction components 3 correspond one-to-one with the multiple noise reduction spaces 15, and the noise reduction components 3 are disposed in the corresponding noise reduction spaces 15 and connected to the recessed inner wall of the noise reduction space 15; the noise reduction components 3 are also provided with multiple sound-absorbing holes 321.

[0043] The sound wave energy absorbed by the noise reduction ring 1 enters the noise reduction component 3 through the noise reduction space 15, and the sound wave energy in the noise reduction component 3 is released back into the noise reduction space 15 through the silencing hole 321 until the sound wave energy in the noise reduction space 15 is completely absorbed.

[0044] It is important to understand that when the sound wave energy of the wheel noise is large, the noise reduction ring 1 in the noise reduction device cannot directly absorb all the sound wave energy. At this time, the sound wave energy that cannot be directly absorbed can be buffered by the elastic component 2. Furthermore, the sound wave energy that cannot be directly absorbed can be continuously consumed in the noise reduction space 15 and the noise reduction component 3, and the sound wave energy that is still not absorbed and consumed can be released into the noise reduction space 15 through the sound-absorbing hole 321. The sound wave energy that re-enters the noise reduction space 15 can, on the one hand, enter the noise reduction ring 1 for absorption again; on the other hand, it can re-enter the noise reduction component 3 for further consumption and release until the sound wave energy is completely absorbed.

[0045] Compared with the prior art, the wheel noise reduction device and method provided by the present invention can continuously absorb the sound wave energy between the noise reduction ring 1, the noise reduction space 15 and the noise reduction component 3, and release the unabsorbed sound wave energy into the noise reduction space 15 through the noise reduction component 3 for further absorption and consumption. Specifically, the noise energy on the wheel can be absorbed into the noise reduction ring 1, the elastic component 2 is used to buffer the sound wave energy absorbed by the noise reduction ring 1, and the noise reduction component 3 can absorb the sound wave energy that the noise reduction ring 1 cannot directly absorb through the noise reduction space 15, and release it into the noise reduction space 15 through the silencer hole 321. The energy that the noise reduction ring 1 cannot directly absorb is continuously absorbed and released in the noise reduction space 15 and the noise reduction component 3 until the noise energy is completely absorbed, thereby improving the noise reduction effect of the wheel and reducing noise pollution.

[0046] In some embodiments, the elastic component 2 is spaced apart from the noise reduction space 15, and at least one noise reduction space 15 is provided between every two adjacent sets of elastic components 2.

[0047] Please see Figure 1In some possible embodiments, the noise reduction ring 1 includes a noise reduction inner ring 11 and a noise reduction outer ring 13, and a sound-absorbing layer 12 located between the noise reduction inner ring 11 and the noise reduction outer ring 13, the sound-absorbing layer 12 being filled with sound-absorbing material; wherein, multiple sets of elastic components 2 are disposed within the sound-absorbing layer 12.

[0048] By setting an inner noise reduction ring 11 and an outer noise reduction ring 13, the internal sound-absorbing layer 12 and noise reduction component 3 are fixedly supported, and the outer noise reduction ring 13 and the partition plate 14 enclose the noise reduction space 15; by filling the sound-absorbing layer 12, the noise generated by the wheel is absorbed, and noise pollution is reduced.

[0049] Please see Figure 1 In some embodiments, the sound-absorbing layer 12 is provided with an inwardly recessed arc-shaped partition plate 14, and the partition plate 14 and the noise-reducing outer ring 13 enclose a noise-reducing space 15.

[0050] It should be understood that by setting the partition plate 14 to an arc shape, on the one hand, it is convenient to form a noise reduction space 15 with the noise reduction outer ring 13 to absorb the sound wave energy released by the noise reduction component 3; on the other hand, it is convenient to install and fix the noise reduction component 3 in the noise reduction space 15 so as to repeatedly absorb and release the sound wave energy that cannot be directly absorbed until it is completely absorbed.

[0051] Please see Figure 1 In some embodiments, the elastic component 2 includes two connecting plates 21 and a first elastic element 22; the two connecting plates 21 are spaced apart in the sound-absorbing layer 12 along the circumferential direction of the noise reduction ring 1, and the two ends of each connecting plate 21 are respectively connected to the inner noise reduction ring 11 and the outer noise reduction ring 13; the first elastic element 22 extends along the circumferential direction of the noise reduction ring 1, and its two ends are respectively connected to the two connecting plates 21.

[0052] By connecting two sets of connecting plates 21 to the noise reduction inner ring 11 and the noise reduction outer ring 13, the two sets of connecting plates 21 are fixed, and then the first elastic element 22 is connected between the two sets of connecting plates 21, thereby realizing the buffering function of the first elastic element 22.

[0053] Please see Figure 1 For example, the noise-reducing inner ring 11 and the noise-reducing outer ring 13 are made of metal, and the sound-absorbing material is made of rubber; the partition plate 14 and the connecting plate 21 are both made of metal and rubber vulcanized together.

[0054] By setting the partition plate 14 and the connecting plate 21 as a metal and rubber vulcanized structure, the partition plate 14 and the connecting plate 21 are connected; the rubber of the sound-absorbing layer 12 forms an integral vulcanized structure with the structure at the partition plate 14 and the connecting plate 21.

[0055] Please see Figure 2In some possible embodiments, the noise reduction component 3 includes a radiation tube 31, a silencer tube 32, and a sealing cover 33. One end of the radiation tube 31 is connected to the inner wall of the noise reduction space 15 near the center of the noise reduction ring 1, and the other end extends outward along the radial direction of the noise reduction ring 1. The radiation tube 31 is provided with a sound radiation channel 311. The silencer tube 32 is located at the extended end of the radiation tube 31 and is connected to the sound radiation channel 311. The silencer tube 32 is provided with a plurality of silencer holes 321. The sealing cover 33 is located at the end of the silencer tube 32 away from the radiation tube 31 and is used to intercept the sound wave energy entering the silencer tube 32. The sound wave energy entering the radiation tube 31 enters the silencer tube 32 through the sound radiation channel 311 and is radiated to the inner wall of the noise reduction space 15 through the silencer holes 321.

[0056] It should be understood that the sound wave energy that cannot be directly absorbed and consumed within the noise reduction ring 1 can enter the muffler 32 through the sound radiation channel 311 and be intercepted by the sealing cover 33. Some of the sound wave energy is absorbed by the muffler 32, and some of the sound wave energy is released into the noise reduction space 15 through the muffler hole 321 on the muffler 32, and then enters the sound radiation channel 311 again through the absorption of the noise reduction ring 1. The sound wave energy is continuously consumed and absorbed during the absorption process of the noise reduction ring 1 and the noise reduction space 15, as well as during the release process of the noise reduction component 3, until the noise of the wheel is completely absorbed and consumed.

[0057] Please see Figure 2 In some embodiments, the silencing tube 32 includes a plurality of rubber rings arranged radially spaced along the noise reduction ring 1, and each rubber ring is provided with a plurality of silencing holes 321 spaced circumferentially along the rubber ring.

[0058] By setting multiple rubber rings, the absorption efficiency and absorption capacity of the noise reduction component 3 are improved.

[0059] Please see Figure 2 For example, the diameter of the multiple rubber rings gradually decreases along the radial direction of the noise reduction ring 1.

[0060] It is important to understand that the sound wave energy entering the silencer tube 32 is gradually reduced after being absorbed by the silencer tube 32 and released by the silencer hole 321. By setting multiple noise reduction rings 1 with different diameters, a gradually decreasing noise reduction channel is formed inside the silencer tube 32, thereby adapting to the gradually decreasing sound wave energy.

[0061] Please see Figure 2In some embodiments, one side of the sealing cover 33 is hinged to the muffler tube 32; the sealing cover 33 has a closed state that closes the muffler tube 32, and the sealing cover 33 also has an open state that swings to release the muffler tube 32; a second elastic member 331 is connected between the sealing cover 33 and the muffler tube 32, and the second elastic member 331 is used to limit the sealing cover 33 to the closed state; wherein, when the noise energy of the wheel exceeds the absorption capacity of the noise reduction device, the other side of the sealing cover 33 is used to swing around its connecting end, so that the sealing cover 33 swings from the closed state to the open state.

[0062] It should be noted that the cover 33 is normally closed, and the second elastic element 331 is used to keep the cover 33 in the normally closed state. When the external noise is very loud, the huge sound wave energy will push the cover 33 open, causing the cover 33 to swing from the closed state to the open state to release the sound wave energy.

[0063] Secondly, this application also provides a noise reduction method using the aforementioned wheel noise reduction device, comprising the following steps:

[0064] S1. The noise reduction ring 1 absorbs the noise energy on the wheel;

[0065] S2. The noise reduction ring 1 absorbs part of the sound wave energy to compress the elastic component 2, so that part of the sound wave energy is converted into the elastic potential energy of the elastic component 2 to buffer the large amount of sound wave energy on the noise reduction ring 1.

[0066] S3. The unabsorbed sound wave energy enters the noise reduction space 15 through the noise reduction ring 1, and the sound wave energy entering the noise reduction space 15 is absorbed by the noise reduction component 3; the sound wave energy that is not absorbed in the noise reduction component 3 is released again into the noise reduction space 15 through the sound-absorbing hole 321, and is absorbed a second time by the noise reduction ring 1 and the noise reduction space 15.

[0067] S4. Proceed to step S3 again and continue until the sound wave energy is completely absorbed.

[0068] The noise reduction method provided in this application, by employing the aforementioned wheel noise reduction device, possesses all the beneficial effects of the aforementioned wheel noise reduction device, thereby improving the noise reduction effect of the wheel and reducing noise pollution.

[0069] Furthermore, in step S3, after the noise reduction component 3 absorbs the sound wave energy, the sound wave energy enters the silencer tube 32 through the sound radiation channel 311 in the radiation tube 31 and is intercepted by the sealing cover 33 at one end of the silencer tube 32. Among them, some of the sound wave energy is absorbed by the silencer tube 32, and the unabsorbed sound wave energy is released into the noise reduction space 15 through the silencer hole 321, and is absorbed again by the noise reduction ring 1 and the partition plate 14. The sound wave energy that cannot be directly absorbed re-enters the sound radiation channel 311 of the radiation tube 31 until the noise is completely absorbed.

[0070] The noise reduction device provided by this invention adopts a four-level noise reduction system composed of a noise reduction ring 1, an elastic component 2, a noise reduction space 15, and a noise reduction component 3, enabling the noise source to achieve multi-level, multi-layer, and multi-stage absorption, effectively realizing the energy absorption, conversion, and release process. From the source analysis of the noise mechanism, a new theoretical system model is established, which is a new wheel noise reduction system solution that breaks the conventional thinking and can significantly improve the wheel noise reduction effect, and facilitates the engineering and systematization of the product.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wheel noise reduction device, characterized in that, include: A noise reduction ring is used to be installed on the wheel rim; the noise reduction ring has multiple noise reduction spaces spaced around its circumference. Multiple sets of elastic components are spaced apart circumferentially within the noise reduction ring; as well as Multiple noise reduction components are provided, each corresponding to one of the noise reduction spaces. Each noise reduction component is disposed within its corresponding noise reduction space and connected to the recessed inner wall of the noise reduction space. Each noise reduction component also has multiple silencing holes. Each noise reduction component includes a silencing tube and a sealing cap. The silencing tube is disposed within the noise reduction space and extends radially along the noise reduction ring. The silencing tube has multiple silencing holes. The sealing cap is disposed at the end of the silencing tube, with one side of the sealing cap hinged to the silencing tube. The sealing cap has a closed state (closing the silencing tube) and an open state (swinging to release the silencing tube). When the sound wave energy enters the muffler, it is radiated to the inner wall of the noise reduction space through the muffler hole. When the noise energy of the wheel exceeds the absorption capacity of the wheel noise reduction device, the other side of the sealing cover is used to swing around its connection end, so that the sealing cover swings from the closed state to the open state.

2. The wheel noise reduction device as described in claim 1, characterized in that, The noise reduction ring includes a noise reduction inner ring, a noise reduction outer ring, and a sound-absorbing layer located between the noise reduction inner ring and the noise reduction outer ring, wherein the sound-absorbing layer is filled with sound-absorbing material; wherein, multiple sets of the elastic components are disposed within the sound-absorbing layer.

3. The wheel noise reduction device as described in claim 2, characterized in that, The sound-absorbing layer is provided with an inwardly recessed arc-shaped partition plate, and the partition plate and the noise-reducing outer ring enclose the noise-reducing space.

4. The wheel noise reduction device as described in claim 3, characterized in that, The elastic component includes: Two connecting plates are spaced apart in the sound-absorbing layer along the circumference of the noise reduction ring, and the two ends of each connecting plate are respectively connected to the inner noise reduction ring and the outer noise reduction ring; The first elastic element extends circumferentially along the noise reduction ring, and its two ends are respectively connected to the two connecting plates.

5. The wheel noise reduction device as described in claim 4, characterized in that, Both the partition plate and the connecting plate are made of vulcanized metal and rubber materials.

6. The wheel noise reduction device as described in claim 1, characterized in that, The noise reduction component also includes: The radiating tube has one end connected to the inner wall of the noise reduction space near the center of the noise reduction ring, and the other end extends outward along the radial direction of the noise reduction ring; the radiating tube is provided with a sound radiation channel. The silencer tube is located at the extension end of the radiating tube and is connected to the sound radiation channel. The sound wave energy entering the radiating tube enters the silencer tube through the sound radiation channel.

7. The wheel noise reduction device as described in claim 6, characterized in that, The silencing tube includes a plurality of rubber rings arranged radially spaced along the noise reduction ring, and each rubber ring is provided with a plurality of silencing holes spaced circumferentially along the rubber ring.

8. The wheel noise reduction device as described in claim 7, characterized in that, The diameter of the plurality of rubber rings gradually decreases along the radial direction of the noise reduction ring.

9. The wheel noise reduction device as described in claim 8, characterized in that, A second elastic element is connected between the sealing cover and the silencer tube, and the second elastic element is used to limit the sealing cover to the closed state.

10. A noise reduction method, characterized in that, The wheel noise reduction device as described in any one of claims 1-9 includes the following steps: S1. The noise reduction ring absorbs noise energy on the wheel; S2. The noise reduction ring absorbs part of the sound wave energy to compress the elastic component, so that part of the sound wave energy is converted into the elastic potential energy of the elastic component to buffer the large amount of sound wave energy on the noise reduction ring. S3. The unabsorbed sound wave energy enters the noise reduction space through the noise reduction ring, and the sound wave energy entering the noise reduction space is absorbed by the noise reduction component; the unabsorbed sound wave energy entering the noise reduction component is released back into the noise reduction space through the sound-absorbing hole, and is absorbed a second time by the noise reduction ring and the noise reduction space. S4. Proceed to step S3 again and continue until the sound wave energy is completely absorbed.

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