CN211039493U - Abnormal sound prevention vibration isolation unit, multistage vibration isolation device and system - Google Patents
Abnormal sound prevention vibration isolation unit, multistage vibration isolation device and system Download PDFInfo
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- CN211039493U CN211039493U CN201921520810.4U CN201921520810U CN211039493U CN 211039493 U CN211039493 U CN 211039493U CN 201921520810 U CN201921520810 U CN 201921520810U CN 211039493 U CN211039493 U CN 211039493U
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Abstract
The utility model provides an abnormal sound prevention vibration isolation unit, a multistage vibration isolation device and a system, which comprises three or four multistage vibration isolation devices; the multistage vibration isolation device comprises an active side bracket, a passive side bracket, a main vibration isolation unit and the vibration isolation unit; one end of the main vibration isolation unit is connected with the driving side bracket, and the other end of the main vibration isolation unit is connected with the driven side bracket; two or more through holes are formed in the driving side support and the driven side support, a vibration isolation unit is correspondingly arranged in each through hole, and the rigid outer sleeve is detachably connected with the through holes. The abnormal sound prevention and vibration isolation unit comprises a screw, a rigid inner sleeve, a vibration isolation rubber sleeve, a rigid outer sleeve and two elastic buffer cushions; a prevent abnormal sound vibration isolation unit, multistage vibration isolation device and system, solved traditional single-stage electric drive assembly vibration isolation system, from mechanical vibration isolation principle, can't realize the technical problem of effectual high frequency vibration isolation.
Description
Technical Field
The utility model belongs to the technical field of the vibration isolation, especially, relate to a prevent abnormal sound vibration isolation unit, multistage vibration isolation device and system.
Background
Compared with the traditional fuel engine assembly, the frequency characteristics of the main excitation source of the electric drive assembly of the electric automobile have larger difference, are mainly concentrated in the range of high frequency (500-. However, without the masking of the noise of the conventional fuel engine, the total noise level of the power system is reduced, but the high-frequency order noise transmitted to the interior of the vehicle is more prominent and annoying. The relevant engineering research data results show that the high-frequency noise of the electric drive assembly transmitted through the structural path occupies a main contribution amount. Thus, high frequency isolation design of the electric drive assembly suspension system is particularly important. At present, the traditional single-stage electric drive assembly vibration isolation system cannot meet the requirement of effective high-frequency vibration isolation on the mechanical vibration isolation principle.
Disclosure of Invention
In view of this, the utility model aims at providing an abnormal sound prevention vibration isolation unit, multistage vibration isolation device and system have solved traditional single-stage electric drive assembly vibration isolation system, from mechanical vibration isolation principle, can't realize the technical problem of effectual high frequency vibration isolation.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
an abnormal sound prevention and vibration isolation unit comprises a screw, a rigid inner sleeve, a vibration isolation rubber sleeve, a rigid outer sleeve and two elastic buffer cushions;
the axial lengths of the rigid inner sleeve, the vibration isolation rubber sleeve and the rigid outer sleeve are all smaller than the axial length of a screw rod of the screw, the axial length of the rigid inner sleeve is larger than the axial length of the rigid outer sleeve, the rigid inner sleeve is sleeved at the position of the screw rod of the screw, and the inner wall of the rigid outer sleeve is connected with the outer wall of the rigid inner sleeve through the vibration isolation rubber sleeve;
the outer diameter of a nut of the screw is smaller than the inner diameter of the rigid outer sleeve, and the outer diameter of the nut of the screw is larger than the outer diameter of the rigid inner sleeve;
two the elastic buffer pad is all established rigid inner sleeve outside, rigid outer sleeve sets up two between the elastic buffer pad, the elastic buffer pad external diameter is greater than rigid outer sleeve external diameter.
Further, the rigid outer sleeve is a steel cylinder or an aluminum cylinder.
Further, the rigid inner sleeve is a steel cylinder or an aluminum cylinder.
Further, the elastic buffer cushion is a rubber cushion.
A multistage vibration isolation device comprises an active side bracket, a passive side bracket, a main vibration isolation unit and a plurality of vibration isolation units;
one end of the main vibration isolation unit is connected with the driving side support, and the other end of the main vibration isolation unit is connected with the driven side support;
the driving side support and the driven side support are respectively provided with at least two through holes, each through hole is internally provided with one corresponding vibration isolation unit or locking bolt, and the rigid outer sleeve is detachably connected with the through holes.
Further, the rigid outer sleeve is in interference fit with the through hole.
Furthermore, the main vibration isolation unit is a rubber block, one end of the rubber block is connected with the driving side support in a vulcanization mode, and the other end of the rubber block is connected with the driven side support in a vulcanization mode.
Further, the main vibration isolation unit is an inertia channel type hydraulic vibration isolation suspension.
A multi-stage vibration isolation system comprises three or four sets of the multi-stage vibration isolation devices;
when the number of the multistage vibration isolation devices is three, three side end faces of the electric drive assembly are correspondingly connected with one set of the multistage vibration isolation devices, and the driving side bracket of each multistage vibration isolation device is connected with the electric drive assembly through the vibration isolation unit;
when the number of the multistage vibration isolation devices is four, four side end faces of the electric drive assembly are correspondingly connected with one set of the multistage vibration isolation devices, and the driving side support of each multistage vibration isolation device is connected with the electric drive assembly through the vibration isolation unit.
Compared with the prior art, a prevent abnormal sound vibration isolation unit, multistage vibration isolation device and system have following advantage:
a prevent abnormal sound vibration isolation unit, multistage vibration isolation device and system, can play the effect of preventing abnormal sound through two elastic buffer pads in preventing abnormal sound vibration isolation unit to prevent that the rigid inner skleeve in the abnormal sound vibration isolation unit and rigid outer sleeve adopt the vibration isolation rubber sleeve to carry out elastic connection, and then can realize the axial of rigid outer sleeve and screw, radial elastic connection, further gain good vibration isolation effect.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic structural view of a multistage vibration isolation system according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of a multistage vibration isolation system according to a second embodiment of the present invention;
fig. 3 is a schematic structural view of a multistage vibration isolation device according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional structure of an abnormal sound prevention and vibration isolation unit according to an embodiment of the present invention;
fig. 5 is a schematic view of another angular cross-sectional structure of the abnormal sound preventing and vibration isolating unit according to the embodiment of the present invention.
Description of reference numerals:
10-an electric drive assembly; 20-a main vibration isolation unit; 21-an active side bracket; 22-passive side support; 31-a screw; 32-a resilient cushion; 33-a rigid outer sleeve; 34-vibration isolation rubber sleeve; 35-rigid inner sleeve.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
An abnormal sound prevention and vibration isolation unit is shown in fig. 4-5 and comprises a screw 31, a rigid inner sleeve 35, a vibration isolation rubber sleeve 34, a rigid outer sleeve 33 and two elastic cushions 32;
the axial lengths of the rigid inner sleeve 35, the vibration isolation rubber sleeve 34 and the rigid outer sleeve 33 are all smaller than the axial length of a screw of the screw 31, the axial length of the rigid inner sleeve 35 is larger than the axial length of the rigid outer sleeve 33, the rigid inner sleeve 35 is sleeved at the screw of the screw 31, the inner wall of the rigid outer sleeve 33 is connected with the outer wall of the rigid inner sleeve 35 through the vibration isolation rubber sleeve 34, the vibration isolation rubber sleeve 34 is connected with the inner wall of the rigid outer sleeve 33 in a vulcanization mode, and the vibration isolation rubber sleeve 34 is connected with;
in the embodiment, the thickness of the vibration isolation rubber sleeve 34 is 2-4mm, and the axial length of the vibration isolation rubber sleeve 34 is 10-20 mm;
the outer diameter of the nut of the screw 31 is smaller than the inner diameter of the rigid outer sleeve 33, and the outer diameter of the nut of the screw 31 is larger than the outer diameter of the rigid inner sleeve 35;
the two elastic buffer cushions 32 are sleeved outside the rigid inner sleeve 35, the rigid outer sleeve 33 is arranged between the two elastic buffer cushions 32, and the outer diameter of each elastic buffer cushion 32 is larger than that of the rigid outer sleeve 33.
The rigid outer sleeve 33 is a steel cylinder or an aluminum cylinder, the rigid inner sleeve 35 is a steel cylinder or an aluminum cylinder, in this embodiment, the rigid outer sleeve 33 and the rigid inner sleeve 35 are both steel cylinders, the elastic buffer 32 is a rubber pad, the elastic buffer 32 can play a role of preventing abnormal sound, the thickness of the elastic buffer 32 is 3-5mm, and the material of the elastic buffer 32 is rubber (e.g., natural rubber).
A multistage vibration isolation device, as shown in FIG. 3, comprises an active side bracket 21, a passive side bracket 22, an active vibration isolation unit 20 and a plurality of the vibration isolation units;
one end of the main vibration isolation unit is connected with the driving side bracket 21, and the other end of the main vibration isolation unit is connected with the driven side bracket 22;
the driving side support 21 and the driven side support 22 are respectively provided with at least two through holes, in this embodiment, the driving side support 21 and the driven side support 22 are respectively provided with two through holes, each through hole is correspondingly provided with a vibration isolation unit or a locking bolt, the rigid outer sleeve 33 is detachably connected with the through hole, and in this embodiment, the rigid outer sleeve 33 is in interference fit with the through hole.
The main vibration isolation unit 20 is an inertia channel type hydraulic vibration isolation suspension and a rubber block, in this embodiment, the main vibration isolation unit 20 is a rubber block, one end of the rubber block is connected with the driving side bracket 21 in a vulcanization mode, and the other end of the rubber block is connected with the driven side bracket 22 in a vulcanization mode.
When the vibration isolation units are arranged in the two through holes of the driving side support 21 and the bolts are arranged in the two through holes of the driven side support 22, the multistage vibration isolation device is a two-stage vibration isolation unit;
when the vibration isolation units are arranged in the two through holes of the driving side support 21 and the vibration isolation units are arranged in the two through holes of the driven side support 22, the multistage vibration isolation device is a three-stage vibration isolation unit;
a multi-stage vibration isolation system comprises three or four sets of the multi-stage vibration isolation devices;
in a three-point arrangement scheme of suspension of an electric drive assembly, as shown in fig. 1, when three sets of multistage vibration isolation devices are provided, three side end faces of the electric drive assembly 10 are respectively connected with a set of multistage vibration isolation devices, and a driving side bracket 21 of each multistage vibration isolation device is connected with the electric drive assembly 10 through a vibration isolation unit;
the electric drive assembly 10 refers to a motor-driven independent system, and the electric drive assembly 10 may be a power drive assembly of an electric vehicle, such as a passenger vehicle electric drive assembly or an electric compressor assembly composed of a permanent magnet synchronous motor and a speed reducer;
in a four-point arrangement scheme of the suspension of the electric drive assembly, as shown in fig. 2, when four sets of multistage vibration isolation devices are provided, four side end surfaces of the electric drive assembly 10 are respectively connected with a set of multistage vibration isolation devices, and a driving side bracket 21 of each multistage vibration isolation device is connected with the electric drive assembly 10 through a vibration isolation unit.
Working mode of the example
The electric drive assembly suspension adopts a three-point type arrangement scheme or a four-point type arrangement scheme, the multistage vibration isolation device is a three-level vibration isolation unit, the two through holes of the driving side bracket 21 are respectively provided with a vibration isolation unit, the driving side bracket 21 of the multistage vibration isolation device is connected with the electric drive assembly 10 through a screw 31 of the vibration isolation unit, the two through holes of the driven side bracket 22 are respectively provided with a vibration isolation unit, and the driven side bracket 22 is connected with a vehicle body through the screw 31 of the vibration isolation unit;
the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An abnormal sound prevention vibration isolation unit is characterized in that: comprises a screw (31), a rigid inner sleeve (35), a vibration isolation rubber sleeve (34), a rigid outer sleeve (33) and two elastic buffer cushions (32);
the axial lengths of the rigid inner sleeve (35), the vibration isolation rubber sleeve (34) and the rigid outer sleeve (33) are all smaller than the axial length of a screw rod of the screw (31), the axial length of the rigid inner sleeve (35) is larger than the axial length of the rigid outer sleeve (33), the rigid inner sleeve (35) is sleeved at the position of the screw rod of the screw (31), and the inner wall of the rigid outer sleeve (33) is connected with the outer wall of the rigid inner sleeve (35) through the vibration isolation rubber sleeve (34);
the nut outer diameter of the screw (31) is smaller than the inner diameter of the rigid outer sleeve (33), and the nut outer diameter of the screw (31) is larger than the outer diameter of the rigid inner sleeve (35);
two elastic buffer pads (32) are all sleeved outside the rigid inner sleeve (35), the rigid outer sleeve (33) is arranged between the two elastic buffer pads (32), and the outer diameter of each elastic buffer pad (32) is larger than that of the rigid outer sleeve (33).
2. The unit of claim 1, wherein: the rigid outer sleeve (33) is a steel cylinder or an aluminum cylinder.
3. The unit of claim 1, wherein: the rigid inner sleeve (35) is a steel cylinder or an aluminum cylinder.
4. The unit of claim 1, wherein: the elastic buffer cushion (32) is a rubber cushion.
5. A multistage vibration isolation device, characterized in that: comprises an active side bracket (21), a passive side bracket (22), a main vibration isolation unit (20) and a plurality of vibration isolation units as claimed in any one of claims 1 to 4;
one end of the main vibration isolation unit is connected with the driving side bracket (21), and the other end of the main vibration isolation unit is connected with the driven side bracket (22);
the driving side support (21) and the driven side support (22) are respectively provided with at least two through holes, each through hole is internally provided with one corresponding vibration isolation unit or locking bolt, and the rigid outer sleeve (33) is detachably connected with the through holes.
6. The multi-stage vibration isolating device according to claim 5, wherein: the rigid outer sleeve (33) is in interference fit with the through hole.
7. The multi-stage vibration isolating device according to claim 6, wherein: the main vibration isolation unit (20) is a rubber block, one end of the rubber block is connected with the driving side support (21) in a vulcanization mode, and the other end of the rubber block is connected with the driven side support (22) in a vulcanization mode.
8. The multi-stage vibration isolating device according to claim 6, wherein: the main vibration isolation unit (20) is an inertia channel type hydraulic vibration isolation suspension.
9. A multi-stage vibration isolation system, comprising: comprising three or four sets of multi-stage vibration isolation devices according to any one of claims 5 to 8;
when the number of the multistage vibration isolation devices is three, three side end surfaces of the electric drive assembly (10) are correspondingly connected with one set of the multistage vibration isolation devices, and a driving side bracket (21) of each multistage vibration isolation device is connected with the electric drive assembly (10) through the vibration isolation unit;
when the number of the multistage vibration isolation devices is four, four side end faces of the electric drive assembly (10) are correspondingly connected with one set of the multistage vibration isolation devices, and the driving side bracket (21) of each multistage vibration isolation device is connected with the electric drive assembly (10) through the vibration isolation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921520810.4U CN211039493U (en) | 2019-09-12 | 2019-09-12 | Abnormal sound prevention vibration isolation unit, multistage vibration isolation device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921520810.4U CN211039493U (en) | 2019-09-12 | 2019-09-12 | Abnormal sound prevention vibration isolation unit, multistage vibration isolation device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211039493U true CN211039493U (en) | 2020-07-17 |
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ID=71567845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921520810.4U Expired - Fee Related CN211039493U (en) | 2019-09-12 | 2019-09-12 | Abnormal sound prevention vibration isolation unit, multistage vibration isolation device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211039493U (en) |
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2019
- 2019-09-12 CN CN201921520810.4U patent/CN211039493U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200717 Termination date: 20210912 |