阅读说明：本技术 一种车轮降噪阻尼器及阻尼材料填充方法 (Wheel noise reduction damper and damping material filling method ) 是由 徐芳 颜瑶 赵文学 胡伟辉 肖祥龙 查国涛 王瑞卓 于 2020-07-07 设计创作，主要内容包括：本发明涉及一种车轮降噪阻尼器,包括：上板及下板,在上板与下板之间间隔设置有多层径向隔板,在径向隔板设置有过胶孔,在与径向隔板垂直的方向还设置有轴向隔板。通过设置轴向隔板来抵消由车轮的轴向振动所产生的噪音,使车轮降噪阻尼器同时具有径向和轴向的双向降噪效果。本发明还提供一种车轮降噪阻尼器的阻尼材料填充方法,将车轮降噪阻尼器的金属骨架放入硫化模具内,利用硫化模具使阻尼材料均匀分布到径向隔板之间的间隙,使阻尼材料与径向隔板和轴向隔板融为一体,避免了阻尼材料与径向隔板和轴向隔板连接部位开裂,提高了车轮降噪阻尼器的可靠性和使用寿命。(The invention relates to a noise reduction damper for a wheel, comprising: the glue-removing device comprises an upper plate and a lower plate, wherein a plurality of layers of radial partition plates are arranged between the upper plate and the lower plate at intervals, glue passing holes are formed in the radial partition plates, and axial partition plates are further arranged in the direction perpendicular to the radial partition plates. The axial partition plate is arranged to offset noise generated by axial vibration of the wheel, so that the wheel noise reduction damper has radial and axial bidirectional noise reduction effects. The invention also provides a method for filling the damping material of the wheel noise reduction damper, which comprises the steps of putting the metal framework of the wheel noise reduction damper into a vulcanization mould, uniformly distributing the damping material to the gap between the radial partition plates by using the vulcanization mould, integrating the damping material with the radial partition plates and the axial partition plates, avoiding the cracking of the connecting parts of the damping material with the radial partition plates and the axial partition plates, and improving the reliability and prolonging the service life of the wheel noise reduction damper.)

1. A noise reducing damper for a vehicle wheel, comprising: upper plate (1) and hypoplastron (4), interval between upper plate (1) and hypoplastron (4) is provided with multilayer radial baffle (3), its characterized in that: the wheel noise reduction damper further comprises: and the axial partition plate (5) is perpendicular to the upper plate (1) or the lower plate (4).

2. The wheel noise reduction damper according to claim 1, wherein: be provided with radial baffle open slot (32) on radial baffle (3), radial baffle open slot (32) of every layer of radial baffle (3) align the setting at the axial, are provided with axial baffle (5) in radial baffle open slot (32), radial baffle open slot (32) of every layer of radial baffle (3) are passed in axial baffle (5), and do not contact with radial baffle (3).

3. The wheel noise reduction damper according to claim 2, wherein: the two axial partition plates (5) are arranged in parallel at intervals, one side edge of each axial partition plate (5) is fixedly connected with the upper plate (1) or the lower plate (4), and the other side edge is in a cantilever state.

4. The wheel noise reduction damper according to claim 3, wherein: the axial partition plate (5) is provided with an axial partition plate open slot (51).

5. The wheel noise reduction damper according to claim 4, wherein: the axial clapboard opening groove (51) is arc-shaped.

6. The wheel noise reduction damper according to claim 1, wherein: the width of the upper plate (1) is the same as that of the lower plate (4), the width (L2) of the radial partition plate is smaller than that (L1) of the lower plate, and the axial partition plate (5) is arranged on one side and/or two sides of the radial partition plate (3).

7. The wheel noise reduction damper according to claim 6, wherein: one side edge of the axial partition plate (5) is fixedly connected with the upper plate (1) or the lower plate (4), and the other side edge is in a cantilever state.

8. The noise reduction damper for vehicle wheels according to any one of claims 1 to 7, wherein: the surface of the radial partition plate (3) is provided with a plurality of glue passing holes (33).

9. The wheel noise reduction damper according to claim 8, wherein: all gaps between the upper plate (1) and the lower plate (4) are filled with damping material (6).

10. The method for filling damping material in a noise reduction damper for a wheel according to claim 9, comprising the steps of:

s1: designing and processing a vulcanization mould according to the external dimension of the wheel noise reduction damper;

s2: the surface treatment is carried out on a metal framework consisting of an upper plate (1), an interlayer (2), a radial partition plate (3), an axial partition plate (5) and a lower plate (4), and the working procedures comprise degreasing, phosphorization, sand blasting and adhesive coating;

s3: preheating a vulcanizing mold on a vulcanizing machine, putting the metal framework into the vulcanizing mold, and reinstalling the metal framework on the vulcanizing machine;

s4: injecting a damping material rubber material into a vulcanization mold cavity, and setting vulcanization temperature, pressure and time for vulcanization;

s5: and taking out the molded object from the vulcanization mold after vulcanization is finished, and trimming to obtain the filled and bonded wheel noise reduction damper.

Technical Field

The invention relates to a wheel noise reduction damper, in particular to a wheel noise reduction damper and a damping material filling method.

Background

In recent years, railway networks in China are continuously expanded, and particularly high-speed railways are rapidly developed. As the speed of railways increases, the noise problems associated with train operation become more pronounced. When a train runs, wheels roll on the rail, and due to the surface roughness and uneven tread of the wheel rail, modal vibration response of the wheels is excited, strong vibration and structural noise are generated, and the strong vibration and the structural noise are radiated to air to be transmitted through the surfaces of the wheels, so that the comfort of passengers is influenced, and huge noise pollution is brought to the periphery of 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 inhibiting the energy of a vibration noise source. The prior art for reducing noise of the current wheel mainly comprises the following four types: the wheel damper, the wheel noise reduction plate, the wheel noise reduction ring and the elastic wheel are all structures or parts which are added with elastic damping vibration reduction on the wheel to reduce radiation noise. Among the closest prior art to the present invention are wheel dampers.

Through patent retrieval, the following patents mainly exist, which have a certain relationship with the invention:

1. the invention relates to a damping layer filling method of a wheel noise reduction block, a positioning structure and the wheel noise reduction block, which is a Chinese invention patent with the application number of 201710981813.7, the application date of 2017.10.20, the publication number of CN 107584705A and the publication date of 2018.01.16, the name of the method, the positioning structure and the wheel noise reduction block are used for filling damping materials into a gap layer of a sandwich structure of the wheel noise reduction block in a vulcanization bonding mode to form the damping layer, and a positioning block is used for positioning a constraint layer of the sandwich structure during vulcanization bonding so as to avoid deformation of the constraint layer in the vulcanization process; during vulcanization, the positioning block is arranged at the edge of the sandwich structure, and part of the positioning block extends into the space layer to provide supporting and positioning for the restraint layer, so that the deformation of the sandwich structure in the vulcanization process is avoided. The invention adopts a vulcanization molding mode, ensures the bonding strength between the damping layer and the sandwich structure, and the uniformity and the aesthetic degree of the damping layer, adopts the positioning block to position and control the constrained layer of the sandwich structure during vulcanization filling, and avoids the problem of deformation of the constrained layer and the mounting plate caused by large end degree of freedom in the vulcanization process to cause uneven thickness of the damping layer, thereby ensuring the manufacturing quality and the size deviation of the wheel noise reduction block, and improving the vibration and noise reduction effect.

2. The invention discloses a wheel noise reduction method and a multilayer wheel noise reduction block, wherein the wheel noise reduction method is that the multilayer wheel noise reduction block is arranged on a wheel to reduce vibration and reduce noise, a mounting plate is arranged in the multilayer wheel noise reduction block, a hole I and a hole II are respectively arranged at two ends of the mounting plate, bolts at two ends are respectively screwed on the wheel through the hole I and the hole II, a first outer constraint layer is arranged at one side of the multilayer wheel noise reduction block close to a wheel shaft, a suspension-shaped inner constraint layer is arranged between the mounting plate and the first outer constraint layer, a hollow mandrel penetrates through the suspension-shaped inner constraint layer, and one end of the mandrel is in contact with the mounting plate, the other end of dabber contacts with first outer restraint layer, and suspension form inner restraint layer is vulcanized through damping layer and is bonded between mounting panel and first outer restraint layer, screws into on the circumference inside of wheel after passing first outer restraint layer, dabber and mounting panel through the middle part bolt to connect the middle part of the piece of making an uproar falls in multilayer formula wheel on the wheel.

3. The invention relates to a wheel noise reduction block which is invented by China and has the application number of 201710981730.8, the application date of 2017.10.20, the publication number of CN 107696789A and the publication date of 2018.01.16, the name of the dynamic vibration absorption type wheel noise reduction block is 'a noise reduction method' and the application name of 'New Material science and technology Limited company' in Zhou time, the wheel noise reduction block comprises a stable bracket and an elastic damping layer, a mounting hole is formed in the stable bracket, the stable bracket comprises a mounting plate, a resonance plate and a middle body, the resonance plate comprises an elastic part and a mass part, the elastic part and the mass part are alternately distributed, and the elastic damping layer and the resonance plate are alternately distributed. During the operation of the wheel, under the excitation action of an external force, severe resonance can be caused, and the external excitation is very complicated, so that the vibration generated by the wheel is in a multi-order modal vibration frequency. According to the vibration reduction bracket, the sounding board of the stable bracket is divided into the elastic part and the mass part along the length direction, the thickness of the elastic part is smaller than that of the mass part, a plurality of natural frequency vibration subsystems are formed, and the natural frequencies of the vibration subsystems are adjusted to be close to the multi-order modal vibration frequency when wheels run, so that the vibration reduction and noise reduction effects are greatly enhanced.

4. The utility model discloses a be "201721354179.6", application date is "2017.10.20", publication number is "CN 207291491U", publication date is "2018.05.01", the name is "a dynamic vibration absorption formula wheel falls the piece of making an uproar", the utility model discloses a for "new materials science and technology limited company of taoise time of the plant," the utility model discloses a firm support and elastic damping layer, firm support is last to be opened there is the mounting hole, firm support includes mounting panel, resonance board and midbody, the resonance board includes elastic component and mass part, elastic component and mass part alternate distribution, elastic damping layer and resonance board alternate distribution. During the operation of the wheel, under the excitation action of an external force, severe resonance can be caused, and the external excitation is very complicated, so that the vibration generated by the wheel is in a multi-order modal vibration frequency. The utility model discloses a resonant board with firm support divides elasticity part and quality part along length direction, and elasticity part's thickness is less than quality part's thickness, forms a plurality of natural frequency vibration subsystems to adjust a plurality of natural frequencies of vibration subsystem to be close with the multistage modal vibration frequency when the wheel moves, thereby strengthen the damping noise reduction effect by a wide margin.

5. The utility model discloses a utility model patent of "the vulcanization location structure and the wheel noise reduction piece of preapring for an unfavorable turn of events" 201721354121.1 ", application date is" 2017.10.20 ", publication number is" CN 207310343U ", publication date is" 2018.05.04 ", the name is" a vulcanization location structure and the wheel noise reduction piece of preapring for an unfavorable turn of events ", the applicant is" new materials science and technology limited company of taoise era of Taoise ", this utility model includes the vulcanization location structure and the wheel noise reduction piece of preapring for an unfavorable turn of events, wherein vulcanize the sandwich structure that the location structure includes locating piece and wheel noise reduction piece, the locating piece; two ends between every two layers of the sandwich structure are provided with a gap layer; the locating block is arranged at the edge of the sandwich structure, and the boss extends into the space layer. The wheel noise reduction block comprises an interlayer structure and a damping layer, the damping layer is arranged in a gap layer of the interlayer structure and is vulcanized, bonded and fixed with the interlayer structure, and a positioning groove is formed in the end face and/or the side face of the damping layer. The positioning structure avoids the deformation of the restraint layer in the vulcanization process to cause the thickness of the damping layer to be uneven, thereby ensuring the manufacturing quality and the size deviation of the wheel noise reduction block and improving the vibration and noise reduction effect.

6. The utility model discloses a multilayer wheel noise reduction block, which comprises a mounting plate and a first outer restraint layer, wherein the mounting plate and the first outer restraint layer are respectively provided with a first hole and a second hole at two ends of the mounting plate, the multilayer wheel noise reduction block is screwed into a wheel through two end bolts respectively passing through the first hole and the second hole, the multilayer wheel noise reduction block also comprises a first outer restraint layer arranged at one side close to an axle, a suspended inner restraint layer is arranged between the mounting plate and the first outer restraint layer, a hollow core shaft passes through the suspended inner restraint layer, one end of the core shaft is contacted with the mounting plate, the other end of the core shaft is contacted with the first outer restraint layer, the suspended inner restraint layer is vulcanized and bonded between the mounting plate and the first outer restraint layer through a damping layer, the middle bolt penetrates through the first outer constraint layer, the mandrel and the mounting plate and then is screwed into the circumferential inner side part of the wheel, so that the middle part of the multilayer wheel noise reduction block is connected onto the wheel. The utility model provides the high effect of making an uproar falls in the damping.

7. The utility model discloses a utility model patent of "201620760079.2", application date is "2016.07.19", publication number is "CN 205853750U", publication date is "2017.01.04", the name is "multilayer attenuator for wheel", the applicant is "harlband reaches industrial environmental protection automation limited company", this utility model includes: mounting panel (1), constrained layer (2), gasket (4) and damping rubber (3), mounting panel, constrained layer, gasket and damping rubber constitute attenuator (9), and the attenuator is the dovetail of installing on wheel (8) that the loop configuration is even through bolt (10), the constrained layer with the gasket stack in turn and form sandwich structure, sandwich structure's upper portion arc terminal surface with the mounting panel weld, produced space is used among the sandwich structure damping rubber fill, damping rubber bonds together with the constrained layer.

8. The utility model discloses a utility model patent of "haerbin reaches industrial environmental protection automation limited company" is applied for the application number "201610568521.6", and the application date is "2016.07.19", and publication number "CN 106004229A", and the publication date is "2016.10.12", and is named "multilayer attenuator and damping method for the wheel", the applicant, this utility model includes: mounting panel (1), constrained layer (2), gasket (4) and damping rubber (3), mounting panel, constrained layer, gasket and damping rubber constitute attenuator (9), and the attenuator is the dovetail of installing on wheel (8) that the loop configuration is even through bolt (10), the constrained layer with the gasket stack in turn and form sandwich structure, sandwich structure's upper portion arc terminal surface with the mounting panel weld, produced space is used among the sandwich structure damping rubber fill, damping rubber bonds together with the constrained layer.

The damper adopts the dynamic vibration absorber principle, each restraint layer has different rigidity and quality, the effect of damping material can be furthest exerted in the wheel vibration process, and meanwhile, the damper is installed on the inner side of a wheel tread through bolts, so that the radial vibration of the wheel can be greatly reduced under the condition of not influencing traffic safety, and further, the radiation noise is reduced. However, the existing wheel damper technology has the following problems:

1) the sandwich structure in the prior art is formed by alternately forming a constraint layer and a gasket in a radial direction, the product mainly has the main function of radial noise reduction, and the axial noise reduction is relatively weak;

2) in the prior art, gaps of the sandwich structure are filled with damping materials, and the damping materials are bonded with the constraint layer, but a feasible or implementable method is not provided for how to fill and bond the gaps, so that the filling method is too general, and a plurality of filling methods are not feasible in engineering or difficult to achieve the technical effects (vibration and noise reduction effect, reliability, stability and the like) which the damper should have.

3) The end sealing glue in the prior art is easy to have defects, a product is composed of multiple layers of steel plates, and the width and the length of an interlayer are not consistent in the actual production process, so that the defects that the glue is easy to overflow and the vulcanization pressure is locally reduced in the vulcanization process of the product are caused, and the local bonding effect of the product is not ideal.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a wheel noise reduction damper which has a multidirectional noise reduction effect and is tightly combined by a clapboard and a damping material.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a noise reducing damper for a vehicle wheel, comprising: the radial baffle plate comprises an upper plate and a lower plate, wherein a plurality of layers of radial baffle plates are arranged between the upper plate and the lower plate at intervals. The wheel noise reduction damper further comprises: and the axial partition plate is perpendicular to the upper plate or the lower plate. The axial partition plate is arranged to offset noise generated by axial vibration of the wheel, so that the wheel noise reduction damper has radial and axial bidirectional noise reduction effects.

Furthermore, the radial partition plate is provided with a radial partition plate open slot, the radial partition plate open slot of each layer of radial partition plate is aligned in the axial direction, an axial partition plate is arranged in the radial partition plate open slot, and the axial partition plate penetrates through the radial partition plate open slot of each layer of radial partition plate and is not contacted with the radial partition plate. The vibration of the axial partition plate is prevented from being influenced by the radial partition plate, and the axial partition plate can play a role in axial noise reduction.

Furthermore, the number of the axial partition plates is two, the two axial partition plates are arranged in parallel at intervals, one side edge of each axial partition plate is fixedly connected with the upper plate or the lower plate, and the other side edge of each axial partition plate is in a cantilever state. The axial position of the axial partition plate can be fixed, and the vibration of the axial partition plate cannot be influenced.

Furthermore, the axial partition plate is provided with an axial partition plate open slot, so that the slotting position, the slotting shape, the slotting length and the slotting number of the partition plate open slot can be set according to the frequency of the axial noise of the wheel, and the vibration generated by the axial partition plate can reduce or offset the axial noise of the wheel.

Further, the opening groove of the axial clapboard is arc-shaped, so that the axial clapboard can form vibration with specific frequency to reduce or offset the axial noise of the wheel.

Further, the width of the upper plate is the same as that of the lower plate, the width of the radial partition plate is smaller than that of the lower plate, and the axial partition plate is arranged on one side and/or two sides of the radial partition plate. The radial partition plate does not need to be provided with a partition plate open slot, so that the structure of the radial partition plate is simplified, and the production cost is reduced.

Furthermore, one side edge of the axial partition plate is fixedly connected with the upper plate or the lower plate, and the other side edge is in a cantilever state. The axial position of the axial partition plate can be fixed, and the vibration of the axial partition plate cannot be influenced.

Furthermore, a plurality of glue passing holes are formed in the surface of the radial partition plate. The damping material is convenient to be uniformly distributed to the gaps between the radial partition plates through the glue holes, so that the damping material is firmly bonded with the radial partition plates.

Furthermore, damping materials are adopted to fill all gaps between the upper plate and the lower plate, so that the damping materials are integrated with the radial partition plate and the axial partition plate, the cracking of the connecting parts of the damping materials with the radial partition plate and the axial partition plate is avoided, and the reliability and the service life of the noise reduction damper of the wheel are improved.

The invention also relates to a method for filling the damping material of the wheel noise reduction damper, which comprises the following steps:

s1: designing and processing a vulcanization mould according to the external dimension of the wheel noise reduction damper;

s2: carrying out surface treatment on a metal framework consisting of an upper plate, an interlayer, a radial partition plate, an axial partition plate and a lower plate, wherein the surface treatment comprises the following steps of degreasing, phosphorizing, sand blasting and adhesive coating;

s3: preheating a vulcanizing mold on a vulcanizing machine, putting the metal framework into the vulcanizing mold, and reinstalling the metal framework on the vulcanizing machine;

s4: injecting a damping material rubber material into a vulcanization mold cavity, and setting vulcanization temperature, pressure and time for vulcanization;

s5: and taking out the molded object from the vulcanization mold after vulcanization is finished, and trimming to obtain the filled and bonded wheel noise reduction damper.

According to the wheel noise reduction damper manufactured by the method, the damping materials can be uniformly distributed in the gaps between the radial partition plates, and the radial partition plates and the axial partition plates are wrapped together, so that the damping materials are integrated with the radial partition plates and the axial partition plates, the connecting parts of the damping materials and the radial partition plates and the connecting parts of the damping materials and the axial partition plates are prevented from cracking, the reliability of the wheel noise reduction damper is improved, and the service life of the wheel noise reduction damper is prolonged.

The invention has the beneficial effects that: the axial partition plate is arranged in the wheel noise reduction damper to offset noise generated by axial vibration of a wheel, so that the wheel noise reduction damper has radial and axial bidirectional noise reduction effects. Through being provided with a plurality of gluey holes of crossing on radial baffle surface, radial baffle's width is less than the width of upper plate and hypoplastron simultaneously for damping material can evenly distributed to the clearance between the radial baffle, and be in the same place radial baffle and axial baffle parcel, make damping material and radial baffle and axial baffle fuse together, avoided damping material and radial baffle and axial baffle to be connected the position fracture, improved the reliability and the life of the attenuator of making an uproar falls in the wheel.

Drawings

Figure 1 is a front view of a noise reduction damper for a vehicle wheel,

figure 2 is a schematic top view of the embodiment,

FIG. 3 is a schematic sectional view of an embodiment A-A,

FIG. 4 is a schematic cross-sectional view of an embodiment B-B,

figure 5 is an enlarged view of a portion D of figure 4,

FIG. 6 is a schematic cross-sectional view of an embodiment C-C,

figure 7 is an enlarged view of portion E of figure 6,

FIG. 8 is a schematic front view of a radial spacer according to an embodiment,

FIG. 9 is a schematic top view of a radial spacer according to an embodiment,

FIG. 10 is a schematic front view of an axial baffle plate according to the embodiment,

FIG. 11 is a schematic sectional view of the second embodiment A-A,

FIG. 12 is a schematic sectional view of the third embodiment A-A,

FIG. 13 is a schematic sectional view of the fourth embodiment A-A,

FIG. 14 is a schematic cross-sectional view of example V A-A,

FIG. 15 is a schematic sectional view of the sixth embodiment A-A,

figure 16 is a graph of various wheel noise comparison test data,

in the figure: 1-upper plate, 2-interlayer, 3-radial partition plate, 31-radial partition plate central hole, 32-radial partition plate open slot, 33-glue passing hole, 4-lower plate, 5-axial partition plate, 51-axial partition plate open slot, 6-damping material, 7-central mounting hole, 8-edge mounting hole, L1-lower plate width, L2-lower plate width, L3-radial partition plate open slot width, and L4-axial partition plate thickness.

Detailed Description

The wheel noise reduction method adopts a dynamic vibration absorption principle, and the noise reduction damper is arranged on the hub of the wheel, so that the vibration frequency of the noise reduction damper is matched with a plurality of natural frequencies of noise generated by the wheel, the damper vibrates along with the wheel to generate reaction force with the same frequency to offset the noise of the wheel, and the noise reduction of the wheel is realized.

In the noise reduction damper, the radial partition plate 3 and the axial partition plate 5 are arranged, so that the noise reduction damper can generate radial vibration and axial vibration to offset the radial vibration and the axial vibration in wheel noise, and radial and axial bidirectional noise reduction is realized.

The number of layers, the mass and the spacing of the radial partition plates 3 and the axial partition plates 5, and the kind of the damping material are determined by measuring and analyzing the frequency and the direction of the wheel noise.

Gaps in the noise reduction damper are filled with damping materials 6, and the radial partition plates 3 and the axial partition plates 5 are bonded with the damping materials 6 through vulcanization.

The radial partition plates 3 and the axial partition plates 5 can be single-layer or multi-layer, the radial partition plates 3 and the axial partition plates 5 are in a cantilever structure or are suspended in the damping material 6, each layer of the radial partition plates 3 and the axial partition plates 5 have different rigidity and mass to match the natural frequency of noise generated by the wheel, so that the noise reduction effect can be exerted to the maximum extent in the vibration process of the wheel, meanwhile, the noise reduction damper is installed on the inner side of a wheel tread through bolts, the radial and axial vibration of the wheel can be greatly reduced under the condition of not influencing the driving safety, and the radiation noise is reduced.

The invention is further described by the following specific embodiments in conjunction with the attached drawings:

one embodiment of a noise reduction damper for a vehicle wheel is shown in FIGS. 1-7 and comprises: the radial partition plate comprises an upper plate 1 and a lower plate 4, and a plurality of layers of radial partition plates 3 are arranged between the upper plate 1 and the lower plate 4 at intervals. The middle positions among the radial partition plates 3 are separated by the interlayer 2, so that the two ends of each radial partition plate 3 are in a cantilever state, and the thickness and the weight of each radial partition plate 3 are different, so that the radial partition plates 3 in the cantilever state can generate vibration with different frequencies to be used for matching the noise generated by the wheels.

The wheel noise reduction damper further comprises: and an axial partition plate 5 disposed perpendicularly to the upper plate 1 or the lower plate 4. The axial clapboard 5 is arranged to offset the noise generated by the axial vibration of the wheel, so that the wheel noise reduction damper has the radial and axial bidirectional noise reduction effects.

As shown in FIG. 3, the upper plate 1 and the lower plate 4 have the same width, and the radial partition width L2 is smaller than the lower plate width L1. The radial partition plates 3 are provided with two radial partition plate opening grooves 32, the radial partition plate opening grooves 32 of each layer of radial partition plate 3 are arranged in an axial alignment mode, and the axial partition plates 5 are respectively arranged in the two radial partition plate opening grooves 32. The slotting position, the slotting shape, the slotting length and the slotting number of the clapboard slotting groove 51 are set according to the frequency of the axial noise of the wheel, so that the vibration generated by the axial clapboard 5 can reduce or offset the axial noise of the wheel.

As shown in FIG. 4 and FIG. 5, which is a cross-sectional view B-B of FIG. 2, the gaps between the upper plate 1 and the radial partition plate 3, between the radial partition plates 3, and between the radial partition plates 3 and the lower plate 4 are filled and wrapped with damping materials 6, so that the damping materials 6 are integrated with the radial partition plates 3 and the axial partition plates 5, the connection parts of the damping materials 6 with the radial partition plates 3 and the axial partition plates 5 are prevented from cracking, the damping materials 6 are bonded with the radial partition plates 3 more firmly, and the reliability and the service life of the noise reduction damper for the wheel are improved.

As shown in fig. 6 and 7, which are cross-sectional views C-C in fig. 2, one side of the axial partition plate 5 is fixedly connected with the upper plate 1 by welding or bolting, and the other side is in a cantilever state. The axial partition 5 is provided with an axial partition open slot 51, and the axial partition open slot 51 may be a straight slot or an arc slot, in this embodiment, an arc slot.

The radial partitions 3 are shown in fig. 8 and 9: radial baffle open slot width L3 is greater than axial baffle thickness L4, axial baffle 5 passes the radial baffle open slot 32 of every layer of radial baffle 3, and does not contact with radial baffle 3 to avoid radial baffle 3 to influence the vibration of axial baffle 5, make axial baffle 5 can play the axial effect of making an uproar that falls. The surface of the radial partition plate 3 is provided with a plurality of glue passing holes 33. The damping material 6 is uniformly distributed to the gaps between the radial partition plates 3 through the glue holes 33, so that the damping material 6 is firmly bonded with the radial partition plates 3.

The axial partition 5 is shown in fig. 10: the axial partition plate 5 is a part of a circular ring, the upper side edge of the axial partition plate 5 is fixed on the upper plate 1 by welding or bolts, and the lower side edge is in a cantilever state, so that the axial partition plate 5 can vibrate in the axial direction; or the lower side of the axial partition plate 5 is fixed on the lower plate 4 by welding or bolts, and the upper side is in a cantilever state, so that the axial partition plate 5 can vibrate in the axial direction to reduce or offset the axial noise of the wheel.