CN215041836U - Bridge type damping ridge-rib layered constraint damping wheel - Google Patents
Bridge type damping ridge-rib layered constraint damping wheel Download PDFInfo
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- CN215041836U CN215041836U CN202120823321.7U CN202120823321U CN215041836U CN 215041836 U CN215041836 U CN 215041836U CN 202120823321 U CN202120823321 U CN 202120823321U CN 215041836 U CN215041836 U CN 215041836U
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Abstract
The utility model relates to a bridge type damping ridge-rib layered constraint damping wheel, which comprises a wheel and a constraint damping layer, wherein the constraint damping layer comprises an inner constraint layer, an elastic damping layer and an outer constraint layer, the inner constraint layer is attached to the side surface of the wheel, and the elastic damping layer is respectively closely attached to the inner constraint layer and the outer constraint layer; the inner constraint layer is provided with an annular bulge, and a cavity is formed between the inner constraint layer and the spoke plate at two sides of the annular bulge; the elastic damping layer is provided with ridge ribs, and the ridge ribs are tightly attached to the grooves of the annular bulges in the direction of the elastic damping layer. Compared with the prior art, the utility model discloses it is protruding that well inner constraint layer is equipped with the annular in radials department, increases the thickness formation ridge rib of this elastic damping layer of department, vacuole formation between whole constraint damping layer and the radials, reduces the restraint that ridge rib department elastic damping layer receives, increases elastic damping layer shear deformation ability, has strengthened the elastic damping layer and has turned into heat energy and the effect of dissipation system vibration energy with vibration mechanical energy, reduces the vibration noise that the wheel produced.
Description
Technical Field
The utility model belongs to the technical field of the damping vibration attenuation technique of making an uproar and specifically relates to a bridge type damping ridge rib stratiform restraint damping wheel is related to.
Background
At present, the urban rail transit industry in China is developed rapidly, urban rail transit is favored by residents in various cities in China due to the characteristics of high speed, high traffic volume and high punctuality rate, and is already an essential transportation means for the residents in daily trips, but vibration noise pollution generated by the operation of the urban rail transit is also a great problem to be solved by the urban rail transit urgently.
In urban rail transit with low vehicle running speed, wheel-rail noise occupies the dominant position of urban rail transit vibration noise, and a damping device is laid on wheels, so that the active vibration and noise reduction method is an effective active vibration and noise reduction means for inhibiting the wheel-rail vibration noise. At present, damping devices laid on wheels are mainly divided into three types, namely layered constraint damping, a damping ring and a tuned mass damper. In these damping devices, the damping ring has a good damping effect only on the squeal noise of the curved section, the tuned mass damper has a good damping effect only on the noise of the narrower bandwidth, and both of them affect the wheel shape, and are not preferred.
The layered constraint damping only needs to be adhered to the surface of a wheel, a rigid plate is fixed on a wheel spoke plate, a layer of thin high-damping viscoelastic material is filled between the rigid plate and the wheel spoke plate, vibration energy is converted into heat energy through the shear deformation of a damping layer to be dissipated, and therefore the purposes of vibration and noise reduction are achieved. However, the degree of shear deformation of the damping layer is limited, and the vibration and noise reduction effect of the layered constrained damping still needs to be further optimized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a bridge type damping ridge rib stratiform restraint damping wheel in order to overcome the defect that above-mentioned prior art exists, interior restraint layer is equipped with the annular arch in radials department, the thickness that increases this elastic damping layer of department forms the ridge rib, vacuole formation between whole restraint damping layer and the radials, reduce the restraint that ridge rib department elastic damping layer receives, increase elastic damping layer shear deformation ability, it turns into the vibration mechanical energy into heat energy and the effect of dissipation system vibration energy to have strengthened the elastic damping layer, reduce the vibration noise that the wheel produced.
The purpose of the utility model can be realized through the following technical scheme:
a bridge type damping ridge-rib layered constraint damping wheel comprises a wheel and a constraint damping layer tightly attached to the side face of the wheel, wherein the wheel is a spoke plate wheel, the constraint damping layer comprises an inner constraint layer, an elastic damping layer and an outer constraint layer, the inner constraint layer is attached to the side face of the wheel, the elastic damping layer is tightly attached to the inner constraint layer, and the outer constraint layer is tightly attached to the elastic damping layer;
the outer edge of the inner restraint layer is tightly attached to a rim of a wheel, the inner edge of the inner restraint layer is tightly attached to a hub of the wheel, an annular bulge which faces the direction of the wheel disk and is coaxial with the wheel is arranged on the inner restraint layer, the annular bulge extends to the outer edge or the inner edge of the inner restraint layer from the annular bulge, and a cavity is formed between the inner restraint layer and the wheel disk;
the annular protrusion on the inner restraint layer is a groove in the direction of the elastic damping layer, the elastic damping layer is provided with a ridge rib, the ridge rib is an annular convex block coaxial with the wheel, and the annular convex block is tightly attached to the groove.
Preferably, the restraint damping layer is closely attached to the outer side face of the wheel.
Preferably, the cross-section of the cavity is approximately triangular.
Preferably, the cross section of the constrained damping layer between the rim and the hub is approximately bridge-shaped.
Preferably, the wheel is a straight spoke wheel or a curved spoke wheel.
Preferably, the inner constraint layer is glued to the side face of the wheel, the elastic damping layer is glued to the inner constraint layer, and the outer constraint layer is glued to the elastic damping layer.
Preferably, the inner constraint layer and the outer constraint layer are constraint layers made of aluminum or steel or carbon fiber materials.
Preferably, the elastic damping layer is a damping layer made of a high damping viscoelastic material with a material loss factor greater than 0.3.
Preferably, the thickness range of the inner constraint layer is 0.5-5 mm, and the thickness range of the outer constraint layer is 0.5-5 mm.
Preferably, the inner and outer constraining layers are the same thickness.
Preferably, the thickness range of the elastic damping layer is 0.5-10 mm.
Preferably, the thickness of the elastic damping layer is the same everywhere except for the ridge rib.
Preferably, the cross section of the ridge rib is rectangular, the size of the rectangle is a x b, the side a is parallel to the radial plate, the side b is perpendicular to the radial plate, the length range of the side a is 2-20 mm, and the length range of the side b is 1-15 mm.
Preferably, the junction of radials and rim is equipped with outer annular groove, the junction of radials and wheel hub is equipped with interior annular groove, and the contact point of annular protrusion on the interior restraint layer and radials is noted as P, and P is greater than L x 1/5 with the distance of interior annular groove, and P is greater than L x 1/5 with the distance of outer annular groove, and L represents the radial length of radials.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the inner constraint layer is provided with the annular bulge at the spoke plate, the thickness of the elastic damping layer at the position is increased to form a ridge rib, the effect that the elastic damping layer converts vibration mechanical energy into heat energy to dissipate system vibration energy is enhanced, and vibration noise generated by the wheel is reduced.
(2) Through the annular bulge on the inner constraint layer and the ridge rib on the elastic damping layer, a cavity is formed between the whole constraint damping layer and the radial plate, a more sufficient space is provided for the shear deformation of the ridge rib, the constraint on the elastic damping layer is reduced, the elastic damping layer is more easily subjected to shear deformation, the effect that the elastic damping layer converts vibration mechanical energy into heat energy and dissipates system vibration energy is enhanced, and vibration noise generated by the wheel is reduced.
(3) A cavity is formed between the annular bulge and the outer edge of the inner constraint layer, a cavity is formed between the annular bulge and the inner edge of the inner constraint layer, the cross section of the cavity is approximately triangular, the spoke plate is completely covered, and radiation of wheel noise to the surrounding space is blocked from the propagation path.
(4) Only on the basis of the wheel, the inner constraint layer, the outer constraint layer and the elastic damping layer are added, the shape of the wheel main body is not affected, the weight of the bridge type damping ridge rib constraint damping layer is light, the increase of unsprung mass of the vehicle is less affected, and the vehicle wheel is convenient to popularize.
Drawings
FIG. 1 is an exploded view of a bridge-type damping rib-layered constrained damping wheel;
FIG. 2 is an outboard side elevational view of the wheel;
FIG. 3 is a schematic structural view of a ridge rib on the elastic damping layer;
FIG. 4 is a cross-sectional view of a bridge-type damping rib layered restraint damped wheel;
FIG. 5 is a cross-sectional view of the inner constraint layer, the elastic damping layer and the outer constraint layer;
FIG. 6 is a graph showing the comparison of the vibration velocity admittance of a bridge-type damping ridge-rib layered constraint damping wheel and a layered constraint damping wheel in an embodiment;
reference numerals: 1. wheel, 11, rim, 12, spoke plate, 13, hub, 14, inner annular groove, 15, outer annular groove, 2, inner constraint layer, 3, elastic damping layer, 4, outer constraint layer, 5, cavity, 6, ridge rib.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. Parts are exaggerated in the drawing where appropriate for clarity of illustration.
Example 1:
a bridge type damping ridge rib layered constraint damping wheel comprises a wheel 1 and a constraint damping layer tightly attached to the outer side face of the wheel 1, as shown in figure 1, the wheel 1 is a spoke plate wheel, such as a straight spoke plate wheel or a curved spoke plate wheel, the wheel 1 in the embodiment is a straight spoke plate wheel with the diameter of 840mm, the constraint damping layer comprises an inner constraint layer 2, an elastic damping layer 3 and an outer constraint layer 4, and the overall shapes of the inner constraint layer 2, the elastic damping layer 3 and the outer constraint layer 4 are obtained by cutting according to the shape of the spoke plate wheel, so that the constraint damping layer can be attached to the wheel 1. The inner constraint layer 2 is attached to the side face of the wheel 1, the elastic damping layer 3 is closely attached to the inner constraint layer 2, and the outer constraint layer 4 is closely attached to the elastic damping layer 3.
This application only on wheel 1's basis, has increased interior restraint layer 2, outer restraint layer 4 and elastic damping layer 3, does not exert an influence to 1 main part shape of wheel, and bridge type damping ridge rib restraint damping layer weight is lighter, and it is less to increase the influence to the unsprung mass of vehicle, facilitate promotion.
As shown in fig. 2, the wheel 1 sequentially includes a rim 11, a spoke plate 12 and a hub 13 from an edge to a circle center direction of the wheel 1, an outer annular groove 15 is arranged at a joint of the spoke plate 12 and the rim 11, an inner annular groove 14 is arranged at a joint of the spoke plate 12 and the hub 13, correspondingly, a main body part of the damping constraining layer is attached to the spoke plate 12, grooves matched with the inner annular groove 14 and the outer annular groove 15 are arranged at two ends of the damping constraining layer, and the damping constraining layer is respectively and closely attached to the rim 11 and the hub 13.
Specifically, in a half wheel from a rim 11 to a hub 13, the cross section of the bridge type damping ridge rib layered constraint damping wheel is as shown in fig. 4, in a constraint damping layer with a three-layer structure, the outer edge of an inner constraint layer 2 is tightly attached to the rim 11 of the wheel 1, the inner edge of the inner constraint layer 2 is tightly attached to the hub 13 of the wheel 1, an annular bulge facing the direction of a wheel disc 12 and coaxial with the wheel 1 is arranged on the inner constraint layer 2, the annular bulge extends to the outer edge or the inner edge of the inner constraint layer 2 from the annular bulge, and a cavity 5 is formed between the inner constraint layer 2 and the wheel disc 12; the annular bulge on the inner restraint layer 2 is a groove in the direction of the elastic damping layer 3, the elastic damping layer 3 is provided with a ridge rib 6, the ridge rib 6 is an annular convex block coaxial with the wheel 1, and the annular convex block is tightly attached to the groove.
The cross-section of the inner constraining layer, the elastic damping layer and the outer constraining layer in the half of the wheel from the rim 11 to the hub 13 is shown in fig. 5. In fact, the sizes of the annular protrusion, the groove and the ridge rib 6 are all small, so that the spoke plate 12 and the constraint damping layer have a slight gap at the ridge rib 6, two cavities 5 are formed, the cavity 5 is formed from the annular protrusion to the outer edge of the inner constraint layer 2, the cavity 5 is formed from the annular protrusion to the inner edge of the inner constraint layer 2, the cross section of the cavity 5 is approximately triangular, the spoke plate 12 is completely covered, and the radiation of wheel noise to the surrounding space is blocked from the propagation path. Between the rim 11 and the hub 13, the cross-section of the constrained damping layer is approximately bridge-shaped.
The inner restraint layer 2 is connected with the side face of the wheel 1 in a glued mode, the elastic damping layer 3 is connected with the inner restraint layer 2 in a glued mode, and the outer restraint layer 4 is connected with the elastic damping layer 3 in a glued mode. In this embodiment, the wheel 1 and the constrained damping layer, and the inner constrained layer 2, the elastic damping layer 3 and the outer constrained layer 4 in the constrained damping layer are adhered together by 801 viscose.
The inner constraint layer 2 and the outer constraint layer 4 are constraint layers made of aluminum or steel or carbon fiber materials, the thickness range of the inner constraint layer 2 is 0.5-5 mm, and the thickness range of the outer constraint layer 4 is 0.5-5 mm. In this embodiment, the thickness of the inner constraining layer 2 is the same as that of the outer constraining layer 4, and both are 1 mm.
The elastic damping layer 3 is made of a high-damping viscoelastic material with a material loss factor larger than 0.3, the thickness range of the elastic damping layer 3 is 0.5-10 mm, and the thicknesses of the elastic damping layer 3 are the same except for the ridge ribs 6. In this embodiment, the elastic damping layer 3 is made of a high damping viscoelastic material with a material loss factor of 0.5, and has a thickness of 1.5 mm.
Annular through interior restraint layer 2 is protruding and the ridge rib 6 of elastic damping layer 3, form the cavity between whole restraint damping layer and the radials 12, provide more sufficient space for the shear deformation of ridge rib 6, and reduced the restraint that elastic damping layer 3 received, make elastic damping layer 3 change and produce shear deformation, strengthened elastic damping layer 3 and turned into heat energy and the effect of dissipation system vibration energy with vibration mechanical energy, reduce the vibration noise that wheel 1 produced.
As shown in FIG. 3, the cross section of the ridge rib 6 is rectangular, the size of the rectangle is a x b, the side a is parallel to the wheel disk 12, the side b is perpendicular to the wheel disk 12, the length of a ranges from 2mm to 20mm, and the length of b ranges from 1mm to 15 mm. In the present embodiment, the ridge rib 6 is rectangular with a cross-sectional dimension of 12 × 5mm, and the 12mm long side of the ridge rib 6 is parallel to the web 12 and the constraining damping layer.
Regarding the position of the annular protrusion on the inner restriction layer 2, or the position of the ridge rib 6, the contact point of the annular protrusion on the inner restriction layer 2 with the web 12 is denoted as P, the distance between P and the inner annular groove 14 is greater than L × 1/5, the distance between P and the outer annular groove 15 is greater than L × 1/5, and L represents the radial length of the web 12, that is, the length of the web 12 is L from the outer annular groove 15 where the web 12 contacts the rim 11 to the inner annular groove 14 where the web 12 contacts the hub 13.
The inner restraint layer 2 is provided with an annular bulge at the spoke plate 12, the thickness of the elastic damping layer 3 at the position is increased to form a ridge rib 6, the effect that the elastic damping layer 3 converts vibration mechanical energy into heat energy to dissipate system vibration energy is enhanced, and vibration noise generated by the wheel 1 is reduced.
The ridge rib 6 is formed by increasing the thickness of the elastic damping layer 3, so that firstly, the sectional area of the elastic damping layer 3 at the position where the wheel 1 deforms greatly is increased, and the vibration absorption amount of the elastic damping layer 3 is increased; secondly, the two sides of the ridge rib 6 are suspended, and the cavity 5 is formed between the constrained damping layer and the wheel disc 12, so that on one hand, the constraint of the elastic damping layer 3 is reduced, the deformation of the elastic damping layer is increased, the vibration absorption amount is further increased, and on the other hand, the noise of the wheel disc 12 of the wheel 1 is isolated through the cavity 5.
In this embodiment, a contact point P between the annular protrusion and the web 12 is set at the position 1/3 of the web 12, the distance from P to the inner annular groove 14 is lx 1/3, and the ridge rib 6 is a rectangle of 12 × 5mm, so that the bridge-type damping ridge rib layered constraint damping wheel is compared with the layered constraint damping wheel in the prior art, as shown in fig. 6, it can be seen that the noise reduction effect of the present application is better.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a bridge type damping ridge rib stratiform restraint damping wheel, includes wheel (1) and the restraint damping layer of closely laminating with wheel (1) side, wheel (1) is the radials wheel, its characterized in that, restraint damping layer includes interior restraint layer (2), elastic damping layer (3) and outer restraint layer (4), interior restraint layer (2) and wheel (1) side laminating, elastic damping layer (3) and interior restraint layer (2) closely laminate, outer restraint layer (4) and elastic damping layer (3) closely laminate;
the outer edge of the inner constraint layer (2) is tightly attached to a rim (11) of the wheel (1), the inner edge of the inner constraint layer (2) is tightly attached to a hub (13) of the wheel (1), an annular bulge which faces the direction of the spoke plate (12) and is coaxial with the wheel (1) is arranged on the inner constraint layer (2), the annular bulge extends to the outer edge or the inner edge of the inner constraint layer (2), and a cavity (5) is formed between the inner constraint layer (2) and the spoke plate (12);
annular protrusion on the inner constraint layer (2) is a groove in the direction of the elastic damping layer (3), a ridge rib (6) is arranged on the elastic damping layer (3), the ridge rib (6) is an annular convex block coaxial with the wheel (1), and the annular convex block is tightly attached to the groove.
2. A bridge type damping ridge-rib layered constraint damping wheel as claimed in claim 1, wherein said inner constraint layer (2) is glued to the side of the wheel (1), said elastic damping layer (3) is glued to the inner constraint layer (2), and said outer constraint layer (4) is glued to the elastic damping layer (3).
3. A bridge-type damping ridge-rib layered constraint damping wheel according to claim 1, characterized in that the inner constraint layer (2) and the outer constraint layer (4) are made of aluminum or steel or carbon fiber material.
4. A bridge-type damping ridge-rib layered constraint damping wheel according to claim 1, characterized in that the elastic damping layer (3) is a damping layer made of high damping viscoelastic material with a material loss factor greater than 0.3.
5. A bridge type damping ridge-rib layered constraint damping wheel according to claim 1, characterized in that the thickness of the inner constraint layer (2) is in the range of 0.5-5 mm, and the thickness of the outer constraint layer (4) is in the range of 0.5-5 mm.
6. A bridge-type damping ridge-and-rib layered constrained damping wheel as claimed in claim 5, characterized in that the thickness of the inner constraining layer (2) and the outer constraining layer (4) are the same.
7. A bridge type damping ridge-rib layered constraint damping wheel according to claim 1, characterized in that the thickness of the elastic damping layer (3) is in the range of 0.5-10 mm.
8. A bridge type damping ridge-rib layered constraint damping wheel according to claim 7, characterized in that the thickness of the elastic damping layer (3) is the same except for the ridge rib (6).
9. A bridge-type damping ridge-rib layered restraining and damping wheel as claimed in claim 1, wherein said ridge rib (6) has a rectangular cross section with the dimensions a x b, the a side is parallel to the web (12) and the b side is perpendicular to the web (12), the a length is in the range of 2-20 mm, and the b length is in the range of 1-15 mm.
10. A bridge damped ridge-rib layered damped wheel according to claim 1, wherein the junction of said web (12) and said rim (11) is provided with an outer annular groove (15), the junction of said web (12) and said hub (13) is provided with an inner annular groove (14), the contact point of the annular protrusion on the inner constraining layer (2) with the web (12) is denoted as P, the distance of P from the inner annular groove (14) is larger than L x 1/5, the distance of P from the outer annular groove (15) is larger than L x 1/5, and L represents the radial length of the web (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120823321.7U CN215041836U (en) | 2021-04-21 | 2021-04-21 | Bridge type damping ridge-rib layered constraint damping wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120823321.7U CN215041836U (en) | 2021-04-21 | 2021-04-21 | Bridge type damping ridge-rib layered constraint damping wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215041836U true CN215041836U (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120823321.7U Active CN215041836U (en) | 2021-04-21 | 2021-04-21 | Bridge type damping ridge-rib layered constraint damping wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215041836U (en) |
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2021
- 2021-04-21 CN CN202120823321.7U patent/CN215041836U/en active Active
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