CN220134468U - Elastic assembly for acoustic black hole elastic coupling - Google Patents
Elastic assembly for acoustic black hole elastic coupling Download PDFInfo
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- CN220134468U CN220134468U CN202321542986.6U CN202321542986U CN220134468U CN 220134468 U CN220134468 U CN 220134468U CN 202321542986 U CN202321542986 U CN 202321542986U CN 220134468 U CN220134468 U CN 220134468U
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- elastic
- acoustic black
- black hole
- elastic element
- isolation
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- 230000008878 coupling Effects 0.000 title claims description 32
- 238000010168 coupling process Methods 0.000 title claims description 32
- 238000005859 coupling reaction Methods 0.000 title claims description 32
- 238000002955 isolation Methods 0.000 claims abstract description 37
- 238000013016 damping Methods 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims description 15
- 239000011345 viscous material Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 229910000639 Spring steel Inorganic materials 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002776 aggregation Effects 0.000 abstract 1
- 238000004220 aggregation Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Abstract
The utility model belongs to the technical field of vibration reduction, and particularly relates to an elastic assembly for an acoustic black hole elastic coupler, which comprises a plurality of elastic elements and isolation washers, wherein the plurality of elastic elements are arranged at intervals, 1 isolation washer is arranged between every two adjacent elastic elements, and 1 isolation washer is respectively arranged at the outer sides of the elastic elements at two ends of the elastic assembly; every 2 isolating washers and an elastic element positioned between the 2 isolating washers form a closed cavity; a plurality of acoustic black holes are distributed on the elastic element; the elastic elements and the isolation gaskets form at least 2 groups of elastic element groups with different thicknesses; according to the utility model, through the energy aggregation effect and the damping vibration reduction technology of the acoustic black hole, the influence of gas damping and rigidity in the cavity between the elastic elements and the change of the thicknesses of the elastic elements and the cavity, the resonance bandwidth is increased, a large amount of vibration energy is consumed, and the effective transmission of vibration is reduced.
Description
Technical Field
The utility model belongs to the technical field of vibration reduction, and particularly relates to an elastic assembly for an acoustic black hole elastic coupler.
Background
The coupling is used in the ship power transmission system, the power and the torque are transmitted, the angle compensation function is achieved, and the natural frequency of the transmission system is regulated, so that the torsional vibration characteristic of the transmission system is improved, the purposes of vibration reduction and noise reduction are achieved, and the elastic coupling has extremely high universality. The elastic component is a key component of the elastic coupling, and in the working process of the elastic coupling, part of vibration waves are generally blocked by the elastic component to be transmitted to the intermediate shaft, so that in a large ship motor drive transmission system, the performance of the elastic component in the elastic coupling determines the performance of the coupling.
The existing elastic component consists of a plurality of spring steel sheets with the same thickness, every two adjacent spring steel sheets are provided with equidistant gaps, the structure has obvious amplitude in a low frequency band, the vibration reduction effect is poor, no electric insulation exists between the spring steel sheets, the coupler is easy to damage, and the service life of the coupler is shortened. Therefore, there is a need for an elastic element set that solves the existing problems.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a novel elastic component for an acoustic black hole elastic coupler, wherein each 2 isolation washers and elastic elements positioned between the 2 isolation washers form a closed cavity, and a plurality of acoustic black holes are distributed on the elastic elements to absorb vibration frequency, so that the effective transmission of vibration is reduced, and the service life of the coupler is prolonged.
In order to achieve the above object, the present utility model provides an elastic assembly for an acoustic black hole elastic coupling, the elastic assembly is in an annular structure, and the elastic assembly is fixedly installed on the outer side of a middle shaft of the acoustic black hole elastic coupling and is coaxial with the middle shaft of the acoustic black hole elastic coupling;
the elastic component comprises a plurality of elastic elements and isolation washers, wherein the elastic elements and the isolation washers are arranged at intervals, 1 isolation washer is arranged between every two adjacent elastic elements, and 1 isolation washer is respectively arranged on the outer sides of the elastic elements at two ends of the elastic component; each 2 of the isolating washers and the elastic element between the 2 isolating washers form a closed cavity;
the elastic elements and the isolation gaskets form at least 2 groups of elastic element groups with different thicknesses, and each group of elastic element groups are arranged in parallel along the same axis; the respective thicknesses of the elastic elements, the isolation washers and the cavities in each elastic element group are the same, and the thickness gradually increases towards the middle shaft direction of the acoustic black hole elastic coupling;
a plurality of acoustic black holes are distributed on the elastic element.
Further, the thickness of the isolation gasket is 1/2 of the thickness of the adjacent elastic element.
Further, the acoustic black hole is a conical-like concave surface.
Further, the plurality of acoustic black holes are alternately distributed along the circumferential direction on the two end planes of the elastic element, the diameter of the conical surface of the acoustic black hole distributed along the radial direction from the inner diameter to the outer diameter of the elastic element on one end plane of the elastic element is gradually increased, and the diameter of the conical surface of the acoustic black hole distributed along the radial direction from the inner diameter to the outer diameter of the elastic element on the other end plane of the elastic element is gradually decreased.
Further, the elastic element further comprises a viscous material and damping particles;
the viscous material is laid on the conical concave surface of the acoustic black hole, the structure of the damping particles is matched with that of the acoustic black hole, and the damping particles are fixed in the acoustic black hole through the viscous material.
Further, the circle centers of the acoustic black holes which are distributed oppositely on the two end surfaces of the elastic element are located at the same circumference radius.
Further, the number of the acoustic black holes distributed along the same circumferential direction on the elastic element is 6-10, and the number of the acoustic black holes distributed along different circumferential radial directions on the elastic element is 2-4.
Further, the elastic element is made of spring steel material, and the isolation gasket is made of copper material.
Further, the damping particles are made of rubber materials.
The beneficial effects of the utility model are as follows:
the elastic component is fixedly arranged on the outer side of the middle shaft of the acoustic black hole elastic coupling and is coaxial with the middle shaft of the acoustic black hole elastic coupling; the elastic component comprises a plurality of elastic elements and isolation washers, wherein the plurality of elastic elements are installed at intervals, 1 isolation washer is installed between every two adjacent elastic elements, and 1 isolation washer is installed on the outer sides of the elastic elements positioned at two ends of the elastic component respectively; every 2 isolating washers and an elastic element positioned between the 2 isolating washers form a closed cavity; a plurality of acoustic black holes are distributed on the elastic element; the acoustic black holes on the cavity and the elastic element absorb the vibration frequency, so that the effective transmission of vibration is reduced, and the service life of the coupler is prolonged;
secondly, a plurality of elastic elements and isolation washers form at least 2 groups of elastic element groups with different thicknesses, the thickness of each elastic element, the thickness of each isolation washer and the thickness of each cavity in each elastic element group are the same, the thickness of each elastic element group gradually thickens towards the middle shaft direction of the acoustic black hole elastic coupler, the vibration reduction frequency band is widened by the elastic element groups with different thicknesses, the vibration reduction effect is more obvious, the average vibration reduction effect in the frequency band of 10-2000 Hz can reach 25dB, the thickness of each elastic element and the thickness of each cavity in the elastic element group are increased along with the increase of the number of the groups, so that the resonant frequency moves towards high frequency, the movement amplitude is gradually increased, and the resonant frequency is at most shifted towards the high frequency by about 15Hz, and the resonant frequency is effectively reduced;
and when vibration is transmitted through the elastic element, vibration energy is gathered at the acoustic black holes, and the vibration energy is absorbed and dissipated by the damping layer at the positions, so that the effective transmission of the vibration is reduced.
Drawings
FIG. 1 is a cross-sectional view of the connection structure of the elastic assembly of the present utility model with an acoustic black hole elastic coupling;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic illustration of a single side of the elastic element of the present utility model;
FIG. 4 is a schematic diagram II of a single side of the elastic element of the present utility model;
FIG. 5 is a cross-sectional view of the resilient element of the present utility model;
fig. 6 is a schematic representation of the damping particles and viscous material of the present utility model.
Wherein 1-the elastic element; 10-acoustic black holes; 11-a first mounting hole; 12-a second mounting hole; 13-a viscous material; 14-damping particles; 2-an isolation gasket; 3-cavity.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
As shown in fig. 1 and 2, the present utility model provides an elastic assembly for an acoustic black hole elastic coupling, which is coaxially installed with an intermediate shaft of the acoustic black hole elastic coupling.
The elastic assembly comprises an elastic element 1 and an insulating gasket 2. The elastic elements 1 and the isolation washers 2 are of a plurality of annular structures, the elastic elements 1 and the isolation washers 2 are coaxially arranged, the plurality of elastic elements 1 are installed at intervals, 1 isolation washer 2 is installed between two adjacent elastic elements 1, and 1 isolation washer 2 is installed on the outer sides of the elastic elements 1 at two ends of the elastic assembly respectively. Every 2 insulating washers 2 and the elastic element 1 between the 2 insulating washers 2 constitute a closed cavity 3, the cavity 3 being intended for shock absorption.
In this embodiment, the plurality of elastic elements 1 and the isolation gasket 2 form at least 2 groups of elastic element groups with different thicknesses, and each group of elastic element groups is arranged in parallel along the same axis, the elastic elements 1 with the same thickness form 1 group of elastic element groups, and each group of elastic elements 1, the isolation gasket 2 and the cavity 3 in the elastic element groups have the same thickness and are thickened step by step towards the middle shaft direction of the acoustic black hole elastic coupling, so that the vibration frequency is changed from low frequency to high frequency, the original vibration frequency is changed, the resonance times are effectively reduced, and the service life of the coupling is prolonged.
Preferably, the number of the isolation washers 2 should be 1 more than the number of the elastic elements 1, the thickness of the isolation washers 2 is 1/2 of the thickness of the adjacent elastic elements 1, and the outer diameter of the isolation washers 2 is the same as the outer diameter of the elastic elements 1.
Preferably, the elastic element 1 is made of spring steel material, and the isolation washer 2 is made of copper material. The thickness of the elastic element 1 is 4-8mm and the thickness of the spacer washer 2 is 2-4mm.
As shown in fig. 3, 4 and 5, the middle part of the elastic element 1 is provided with a central hole. The elastic element 1 comprises an acoustic black hole 10, a first mounting hole 11 and a second mounting hole 12.
The first mounting holes 11 and the second mounting holes 12 are multiple, the first mounting holes 11 are distributed inside the outer edge of the elastic element 1 in an annular array, and the second mounting holes 12 are distributed outside the central hole of the elastic element 1 in an annular array.
The acoustic black hole 10 has a plurality of conical concave surfaces for gathering vibration energy, improving the elastic deformation capability of the elastic element 1, avoiding the damage of the elastic element 1 caused by installation problem, and prolonging the service life of the elastic element 1.
The plurality of acoustic black holes 10 are alternately distributed along the circumferential direction on the two end planes of the elastic element 1, the diameter of the conical surface of the acoustic black holes 10 distributed along the inner radial direction on one end plane of the elastic element 1 is gradually increased, the diameter of the conical surface of the acoustic black holes 10 distributed along the inner radial direction on the other end plane of the elastic element 1 is gradually reduced, and the circle centers of the acoustic black holes 10 distributed along the inner radial direction on the two end planes of the elastic element 1 are positioned at the same circumferential radius. The acoustic black holes 10 with different diameters on the two end surfaces of the elastic element 1 can change the vibration reduction starting frequency and widen the vibration reduction frequency band.
Preferably, the number of the acoustic black holes 10 distributed along the same circumferential direction on the elastic element 1 is 6-10, and the number of the acoustic black holes 10 distributed along different circumferential radial directions on the elastic element 1 is 2-4.
Taking the state shown in fig. 4 as an example, the number of layers of the acoustic black holes 10 distributed along different circumferential radial directions on the left end face of the elastic element 1 is 3, the number of the acoustic black holes 10 distributed along the same circumferential direction on the elastic element 1 is 8, and the diameter of the conical surface of the acoustic black hole 10 distributed along the radial direction from the inner diameter to the outer diameter on one end plane of the elastic element 1 is gradually increased.
Taking the state shown in fig. 5 as an example, the number of layers of the acoustic black holes 10 distributed along different circumferential radial directions on the right end face of the elastic element 1 is 3, the number of the acoustic black holes 10 distributed along the same circumferential direction on the elastic element 1 is 8, and the diameter of the conical surface of the acoustic black hole 10 distributed along the radial direction from the inner diameter to the outer diameter on one end plane of the elastic element 1 is gradually reduced. The diameters of the conical surfaces of the acoustic black holes 10 distributed on the layer 2 of the left end surface and the right end surface of the elastic element 1 are equal.
The insulating gasket 2 comprises a first insulating gasket and a second insulating gasket. The first spacer washer has a central hole coaxial with the central hole of the elastic element 1 and having the same diameter, and also has an opening matching the second mounting hole 12; the second spacer washer has an opening matching the first mounting hole 11, the outer diameter of the second spacer washer being the same as the outer diameter of the elastic element 1; there is a preset distance between the outer diameter of the first insulating washer and the inner diameter of the second insulating washer, which does not cover the acoustic black hole 10.
The second mounting hole 12 and the opening of the first insulating washer are fastened by bolts through a bracket by means of which the elastic element 1 and the first insulating washer, which are coaxially stacked together, are fixedly mounted on the intermediate shaft of the acoustic black hole elastic coupling. The openings of the first mounting hole 11 and the second spacer washer are fixed by bolts.
Preferably, insulators are laid on the rod parts of the bolts and the contact surfaces of the isolation washers 2 and the elastic elements 1, and the electric insulation property of the insulators can prevent current from passing through the coupler when the motor drives the coupler, so that current loss is prevented, unnecessary interference is avoided, and the service life of the coupler is prolonged.
As shown in fig. 6, the elastic element 1 further comprises a viscous material 13 and damping particles 14.
The viscous material 13 is laid on the conical concave surface of the acoustic black hole 1200, the structure of the damping particles 14 is matched with that of the acoustic black hole 1200, the damping particles 14 are fixed in the acoustic black hole 1200 through the viscous material 13, and the damping particles 14 are made of rubber materials.
The damping particles 14 on the acoustic black holes 1200 of different diameters are able to absorb vibrations of different frequencies, reducing the effective transmission of vibrations.
The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. An elastic component for an acoustic black hole elastic coupling is characterized in that the elastic component is of an annular structure, and is fixedly arranged on the outer side of a middle shaft of the acoustic black hole elastic coupling and coaxial with the middle shaft of the acoustic black hole elastic coupling;
the elastic assembly comprises elastic elements (1) and isolation washers (2), the elastic elements (1) and the isolation washers (2) are multiple, the elastic elements (1) are installed at intervals, 1 isolation washer (2) is installed between every two adjacent elastic elements (1), and 1 isolation washer (2) is installed on the outer sides of the elastic elements (1) at two ends of the elastic assembly respectively; -each 2 of said insulating washers (2) and said elastic element (1) therebetween constitute a closed cavity (3);
the elastic elements (1) and the isolation gaskets (2) form at least 2 groups of elastic element groups with different thicknesses, and each group of elastic element groups are arranged in parallel along the same axis; the respective thicknesses of the elastic elements (1), the isolation washers (2) and the cavities (3) in each group of elastic element groups are the same, and gradually thicken towards the middle shaft direction of the acoustic black hole elastic coupling;
a plurality of acoustic black holes (10) are distributed on the elastic element (1).
2. Elastic assembly for an acoustic black hole elastic coupling according to claim 1, characterized in that the thickness of the insulating washer (2) is 1/2 of the thickness of the adjacent elastic element (1).
3. Elastic assembly for an acoustic black hole elastic coupling according to claim 1, characterized in that the acoustic black hole (10) is cone-like concave.
4. A spring assembly for an acoustic black hole spring coupling according to claim 3, wherein a plurality of said acoustic black holes (10) are alternately distributed in a circumferential direction on both end planes of said spring member (1), the tapered diameters of said acoustic black holes (10) distributed in an inner radial direction on one end plane of said spring member (1) are gradually increased, and the tapered diameters of said acoustic black holes (10) distributed in an inner radial direction on the other end plane of said spring member (1) are gradually decreased.
5. Elastic assembly for an acoustic black hole elastic coupling according to claim 1, characterized in that the elastic element (1) further comprises a viscous material (13) and damping particles (14);
the viscous material (13) is laid on the conical concave surface of the acoustic black hole (10), the structure of the damping particles (14) is matched with that of the acoustic black hole (10), and the damping particles (14) are fixed in the acoustic black hole (10) through the viscous material (13).
6. A spring assembly for an acoustic black hole spring coupling according to claim 3, wherein the centers of the circles of the acoustic black holes (10) which are oppositely distributed on both end surfaces of the spring element (1) are located at the same circumference radius.
7. An elastic assembly for an acoustic black hole elastic coupling according to claim 3, characterized in that the number of acoustic black holes (10) distributed in the same circumferential direction on the elastic element (1) is 6-10, and the number of layers of acoustic black holes (10) distributed in different circumferential radial directions on the elastic element (1) is 2-4.
8. Elastic assembly for an acoustic black hole elastic coupling according to claim 1, characterized in that the elastic element (1) is of spring steel material and the insulating washer (2) is of copper material.
9. An elastic assembly for an acoustic black hole elastic coupling according to claim 5, wherein the damping particles (14) are of rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321542986.6U CN220134468U (en) | 2023-06-16 | 2023-06-16 | Elastic assembly for acoustic black hole elastic coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321542986.6U CN220134468U (en) | 2023-06-16 | 2023-06-16 | Elastic assembly for acoustic black hole elastic coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220134468U true CN220134468U (en) | 2023-12-05 |
Family
ID=88964151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321542986.6U Active CN220134468U (en) | 2023-06-16 | 2023-06-16 | Elastic assembly for acoustic black hole elastic coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220134468U (en) |
-
2023
- 2023-06-16 CN CN202321542986.6U patent/CN220134468U/en active Active
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