CN101722989A - Vibration reduction block and front suspended crossbeam provided with same - Google Patents
Vibration reduction block and front suspended crossbeam provided with same Download PDFInfo
- Publication number
- CN101722989A CN101722989A CN200910213643A CN200910213643A CN101722989A CN 101722989 A CN101722989 A CN 101722989A CN 200910213643 A CN200910213643 A CN 200910213643A CN 200910213643 A CN200910213643 A CN 200910213643A CN 101722989 A CN101722989 A CN 101722989A
- Authority
- CN
- China
- Prior art keywords
- damping block
- front suspended
- suspended crossbeam
- vibration reduction
- reduction block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000013016 damping Methods 0.000 claims abstract description 58
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000005987 sulfurization reaction Methods 0.000 claims description 4
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 7
- 239000013013 elastic material Substances 0.000 abstract 1
- 230000001629 suppression Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
Abstract
The invention discloses a vibration reduction block with conveniently regulated natural frequency and resonance amplitude and a front suspended crossbeam provided with the vibration reduction block. The vibration reduction block comprises a counter weight, a mounting base and a damping block made of elastic materials, wherein the damping block is installed between the counter weight and the mounting base, and the bottom of the mounting base is provided with a mounting bolt and a lock nut. The natural frequency of the front suspended crossbeam is the same as that of the vibration reduction block, and the natural frequency of the vibration reduction block is consistent with the resonance frequency of the front suspended crossbeam, such that a combination system consisting of the vibration reduction block and the front suspended crossbeam has two resonance frequencies which are respectively arranged on both sides of a resonance point of an original front suspended crossbeam when the vibration reduction block is not assembled, and the peak value of the combination system is smaller than the resonance peak value of the original front suspended crossbeam. Two new resonance frequencies and vibration amplitudes of the combination system can be adjusted by adjusting the mass and the natural frequency of the vibration reduction block, and the vibration frequency of an engine is avoided as far as possible, thus the purpose of reducing noise is realized.
Description
Technical field
The invention belongs to field of automobile, specially refer to the accessory that front overhang is put the crossbeam place.
Background technology
Along with developing of automobile industry, people are to every performance requriements of automobile, and especially travelling comfort and the NVH performance demands to vehicle is more and more higher.The main effect of the front suspended crossbeam of automobile is to support driving engine, reduce importing into of road vibration, front suspended crossbeam must have enough intensity, all be not destroyed under the various bad working environments that guarantee to run in the process of moving, simultaneously also enough rigidity must be arranged, be unlikely to that with the relative position that guarantees in the process of moving each the big assembly on it big change is arranged.Impact in order to alleviate ground-surface, increase the traveling comfort of car load, suspending cushion is equipped with at the two ends of front suspended crossbeam, so just cause the box sections area at crossbeam two ends to reduce suddenly, thereby reduced the whole mode of front suspended crossbeam, make front suspended crossbeam and driving engine cause resonance easily, cause the roar of car load.
Summary of the invention
First purpose of the present invention is to propose a kind of convenient damping block of regulating its natural frequency and resonance amplitude.
The crucial part of damping block of the present invention is that this damping block comprises clump weight, mounting seat and the damping block of being made by elastomeric material, described damping block is installed between clump weight and the mounting seat, and the bottom of described mounting seat is provided with hold-down bolt and jam nut.
Can regulate the distance between two resonance frequencys of damping block and the group system of front suspended crossbeam formation by the quality of regulating clump weight, can regulate the natural frequency of this damping block by the hardness of regulating damping block, this damping block is installed on the front suspended crossbeam of automobile, the system frequency of its formation will be avoided the oscillation frequency of driving engine, reduce the vibration of front suspended crossbeam, improve the NVH performance of automobile.Damping block is installed between clump weight and the mounting seat, makes damping block fully to absorb vibrational energy, reduces the vibration of front suspended crossbeam.
Described damping block is preferably rubber pad, good springiness, and the range of regulation of its hardness is big, can utilize the rubber of smaller size smaller the natural frequency of damping block can be changed in a big way, to satisfy the needs of different automobile types.
Above-mentioned rubber damping piece can be fixed by increasing mode such as support and clump weight, mounting seat, but so just might influence the structure and the elasticity of rubber damping piece, therefore preferably the rubber damping piece is bondd by sulfuration and clump weight, mounting seat, convenient fixing so not only, also can not influence the characteristic of rubber damping piece, and then influence the natural frequency of damping block because of fixed form.
Second purpose of the present invention is the front suspended crossbeam that proposes to be equipped with above-mentioned damping block, and this front suspended crossbeam can significantly reduce vibration, improves the NVH performance of automobile.
The crucial part of front suspended crossbeam of the present invention is that this front suspended crossbeam is equipped with above-mentioned damping block, and the natural frequency of this front suspended crossbeam is identical with the natural frequency of damping block.
The natural frequency of damping block is consistent with the resonance frequency of front suspended crossbeam, the group system that makes damping block and front suspended crossbeam constitute has two resonance frequencys, the both sides of the former front suspended crossbeam resonance point when laying respectively at unassembled damping block, its peak value is less than the resonance peak of former front suspended crossbeam, by reducing resonance peak, can improve the NVH performance of automobile greatly.Two new resonance frequencys of group system and Oscillation Amplitude can be regulated by quality, the natural frequency of regulating damping block, avoid the oscillation frequency of driving engine as far as possible, reach the purpose that reduces noise.
Confirm according to test, when the clump weight quality of damping block be the front suspended crossbeam quality 1/8～1/10 the time, effectiveness in vibration suppression is best.
Damping block preferably is installed in the position of front suspended crossbeam vibration displacement maximum, to reach best effectiveness in vibration suppression.
The effectiveness in vibration suppression of damping block is relevant with the formation mechanism of vibration source, because the resonance of front suspended crossbeam causes by single order excitation, so damping block preferably is installed in the position of the pairing maximum displacement of front suspended crossbeam single order mode of flexural vibration, this moment effectiveness in vibration suppression the best.
Damping block of the present invention is simple in structure, and the adjusting of its natural frequency and resonance amplitude is all very convenient, and the front suspended crossbeam that this damping block is installed can significantly reduce vibration, thereby has improved the NVH performance of automobile.
Description of drawings
Fig. 1 is the structural representation of damping block of the present invention;
Fig. 2 is the structural representation of front suspended crossbeam of the present invention.
The specific embodiment
Describe the present invention in detail below in conjunction with specific embodiments and the drawings.
Embodiment 1:
As shown in Figure 1, the damping block 6 of present embodiment comprises clump weight 1, mounting seat 2 and the damping block of being made by rubber 3, described damping block 3 is bonded between clump weight 1 and the mounting seat 2 by sulfuration, and the bottom of described mounting seat 2 is provided with hold-down bolt 4 and jam nut 5.
As shown in Figure 2, restriction because of installing space, above-mentioned damping block 6 is assemblied in the position that keeps left in the middle of the front suspended crossbeam 7, to greatest extent near the position of these front suspended crossbeam 7 vibration displacement maximums, the natural frequency of damping block 6 is consistent with the resonance frequency of front suspended crossbeam 7, can significantly reduce vibration, improve the NVH performance of automobile.
The quality of clump weight 1 is about 400 grams, is equivalent to about 1/8 of front suspended crossbeam 7, and the quality size of clump weight 1 has determined the distance between two resonance frequencys, and quality is big more, and distance is far away more; Damping block 3 is used for regulating the frequency of damping block 6, is the staple that solves noise, and it has determined the position and the size of two resonance frequencys; The damping block 3 that rubber is made is fixed by sulfuration and mounting seat 2, clump weight 1 bonding, assembles as a total member and front suspended crossbeam 7 with it; Hold-down bolt 4, jam nut 5 can be connected damping block 6, fix with front suspended crossbeam 7.
Claims (7)
1. a damping block is characterized in that this damping block comprises clump weight, mounting seat and the damping block of being made by elastomeric material, and described damping block is installed between clump weight and the mounting seat, and the bottom of described mounting seat is provided with hold-down bolt and jam nut.
2. damping block according to claim 1 is characterized in that described damping block is a rubber pad.
3. damping block according to claim 2 is characterized in that described damping block bonds by sulfuration and clump weight, mounting seat.
4. a front suspended crossbeam that is equipped with claim 1 or 2 or 3 described damping blocks is characterized in that the natural frequency of this front suspended crossbeam is identical with the natural frequency of damping block.
5. front suspended crossbeam according to claim 4, the clump weight quality that it is characterized in that described damping block is 1/8～1/10 of a front suspended crossbeam quality.
6. front suspended crossbeam according to claim 4 is characterized in that described damping block is installed in the position of front suspended crossbeam vibration displacement maximum.
7. front suspended crossbeam according to claim 6 is characterized in that described damping block is installed in the position of the pairing maximum displacement of front suspended crossbeam single order mode of flexural vibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910213643A CN101722989A (en) | 2009-12-07 | 2009-12-07 | Vibration reduction block and front suspended crossbeam provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910213643A CN101722989A (en) | 2009-12-07 | 2009-12-07 | Vibration reduction block and front suspended crossbeam provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101722989A true CN101722989A (en) | 2010-06-09 |
Family
ID=42444704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910213643A Pending CN101722989A (en) | 2009-12-07 | 2009-12-07 | Vibration reduction block and front suspended crossbeam provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101722989A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063231A (en) * | 2013-01-08 | 2013-04-24 | 中国船舶重工集团公司第七0四研究所 | High frequency vibration resistant beam used for micro torque calibrating device |
| CN103206474A (en) * | 2013-04-03 | 2013-07-17 | 广东邦达实业有限公司 | Dynamic vibration absorber with resonant frequency capable of being quickly adjusted |
| CN103991416A (en) * | 2014-05-20 | 2014-08-20 | 安徽中鼎减震橡胶技术有限公司 | Adjustable resonance block |
| CN107017803A (en) * | 2017-05-19 | 2017-08-04 | 信利光电股份有限公司 | A kind of method for adjusting motor resonance frequency |
-
2009
- 2009-12-07 CN CN200910213643A patent/CN101722989A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063231A (en) * | 2013-01-08 | 2013-04-24 | 中国船舶重工集团公司第七0四研究所 | High frequency vibration resistant beam used for micro torque calibrating device |
| CN103063231B (en) * | 2013-01-08 | 2015-08-19 | 中国船舶重工集团公司第七0四研究所 | For the anti-dither beam of small torque calibration device |
| CN103206474A (en) * | 2013-04-03 | 2013-07-17 | 广东邦达实业有限公司 | Dynamic vibration absorber with resonant frequency capable of being quickly adjusted |
| CN103991416A (en) * | 2014-05-20 | 2014-08-20 | 安徽中鼎减震橡胶技术有限公司 | Adjustable resonance block |
| CN107017803A (en) * | 2017-05-19 | 2017-08-04 | 信利光电股份有限公司 | A kind of method for adjusting motor resonance frequency |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100609 |