CN105134851A - Power vibration absorber with directionally adjustable frequency - Google Patents
Power vibration absorber with directionally adjustable frequency Download PDFInfo
- Publication number
- CN105134851A CN105134851A CN201510534664.0A CN201510534664A CN105134851A CN 105134851 A CN105134851 A CN 105134851A CN 201510534664 A CN201510534664 A CN 201510534664A CN 105134851 A CN105134851 A CN 105134851A
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- China
- Prior art keywords
- balancing weight
- mass block
- fixed mass
- vibration absorber
- dynamic vibration
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Abstract
The invention discloses a power vibration absorber with a directionally adjustable frequency. The power vibration absorber comprises a base and a fixed mass block, wherein the bottom of the fixed mass block is vulcanized on the base through a rubber body; and multiple counterweights are attached on the fixed mass block. The power vibration absorber is simple in structure and low in cost, and can simply and quickly adjust the frequency as needed.
Description
Technical field
The present invention relates to auto NVH field, be specially the dynamic vibration absorber that a kind of frequency is directed adjustable.
Background technique
Dynamic vibration absorber is a kind of typical active control system, controls and be used widely in car load NVH performance optimization at automobile vibration.Dynamic vibration absorber is a vibration system comprising pedestal, rubber and mass block, is usually connected to the position that controlled structural vibration displacement is maximum.When external excitation frequency is close with controlled structural natural frequencies, vibrational energy can be absorbed by the bump leveller that frequency is close, thus suppresses the vibration of structure.
Dynamic vibration absorber belongs to single-degree-of-freedom shock absorption system, only can eliminate the vibrational excitation of single-frequency, and its frequency changes its frequency by quality of regulation m and rubber stiffness k usually.For existing dynamic vibration absorber, if need to change its frequency, normally destroy rubber structure or change this weight of bump leveller.In order to reach required frequency, repeatedly to regulate repeatedly, and after bump leveller structural damage, no longer possess the characteristic recycled, waste a large amount of manpowers and material resources, virtually add construction cycle and the cost of vehicle.
Summary of the invention
The object of the present invention is to provide the dynamic vibration absorber that a kind of frequency is directed adjustable, its structure is simple, with low cost, regulating frequency that can be fast and convenient as required.
The dynamic vibration absorber that frequency of the present invention is directed adjustable, comprise pedestal and fixed mass block, rubber body sulfuration is passed through on described pedestal bottom described fixed mass block, described fixed mass block is attached to multiple balancing weight, described balancing weight comprises gusset balancing weight and top balancing weight, described gusset balancing weight is dismountable to be arranged on fixed mass block surrounding side, installation tapped hole is offered at the top of described fixed mass block, in the middle part of the balancing weight of described top, there is via hole, by the cover plate of a band screw rod, described top balancing weight is fastened on fixed mass block top.
Preferably, described pedestal offers pedestal mounting hole.
Preferably, be provided with connecting groove in the surrounding side of described fixed mass block, described gusset balancing weight inner side surface is provided with connection projection, to coordinate be arranged on the side of fixed mass block by gusset balancing weight by connecting projection with connecting groove.
Preferably, described connecting groove is wedge slot.
Dynamic vibration absorber structure of the present invention is simple, with low cost, by adjusting combination and the weight of balancing weight, reaching the object of directed change bump leveller frequency, effectively having saved construction cycle and cost.
Accompanying drawing explanation
Fig. 1 is the one degree of freedom modeling figure of this dynamic vibration absorber;
Fig. 2 is the assembling schematic diagram of this dynamic vibration absorber;
Fig. 3 is the scheme of installation of this dynamic vibration absorber on right cantilever support;
Fig. 4 is sound test spectrum in car.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further elaborated, and following examples only for explaining the present invention, do not form limiting the scope of the present invention.
See Fig. 1, the directed adjustable dynamic vibration absorber of frequency of the present invention is equivalent to a single degree of freedom system, according to its principle, sets up the single-degree-of-freedom differential equation:
Wherein,
because rubber is close to undamped, so c=0, substituted in formula 1, can be obtained thus:
In formula 2, frequency f is inversely proportional to quality m, is directly proportional to rubber stiffness k value.The present invention is that the weight by changing dynamic vibration absorber carrys out regulating frequency.
As shown in Figure 2, the dynamic vibration absorber in the present embodiment, comprises the cover plate 3 of pedestal 1, fixed mass block 2, balancing weight and band screw rod.Described fixed mass block 2 is a rectangular block body, passes through rubber body 6 sulfuration on described pedestal, offer the connecting groove of wedge form wedge form dovetail channel-shaped respectively, offer installation tapped hole in fixed mass block top center in the surrounding side of described fixed mass block bottom it.
Described balancing weight comprises the different gusset balancing weight 4 of the four pieces of quality top balancing weight 5 different with three pieces of quality.Described gusset balancing weight 4 inner side surface is provided with connection projection, is slipped in connecting groove being arranged on the side of fixed mass block by gusset balancing weight by connection projection.Described top balancing weight 5 has the plate body of via hole for middle part, described three pieces of top balancing weights 5 overlay the top of fixed mass block 2, described top balancing weight, is fastened on fixed mass block 2 through the via hole of each top balancing weight 5 by its screw rod 301 by described cover plate 3.Described pedestal 1 offering pedestal mounting hole, by pedestal mounting hole, above-mentioned dynamic vibration absorber being arranged on the position of needs with construction bolt 7 when assembling.
This dynamic vibration absorber adopts the balancing weight of gusset and the two kinds of forms in top, makes the boundary dimension of bump leveller can meet the requirements of installation space of different automobile types.The limited height of the installing space of such as certain vehicle, then selected to place top balancing weight less as far as possible, made up according to gross weight by gusset balancing weight.
For certain research and development vehicle, find that in car, sound is coarse in R&D process, sound poor quality, show as the resonant belt of 460Hz in car, subjective assessment is unacceptable.According to this requirement, the weight combinations of balancing weight on adjustment bump leveller, thus obtain the dynamic vibration absorber 8 that frequency is 460Hz, and be mounted on right suspension master end support 9 (as Fig. 3).See Fig. 4, in this dynamic vibration absorber rear car of installation, 460Hz resonant belt disappears, and in car, sound reduces in the magnitude entirety of more than 2600Rpm, and rough touch disappears.
Claims (4)
1. the dynamic vibration absorber that a frequency is directed adjustable, comprise pedestal (1) and fixed mass block (2), rubber body (6) sulfuration is passed through on described pedestal bottom described fixed mass block, it is characterized in that: on described fixed mass block, be attached to multiple balancing weight, described balancing weight comprises gusset balancing weight (4) and top balancing weight (5), described gusset balancing weight is dismountable to be arranged on fixed mass block surrounding side, installation tapped hole is offered at the top of described fixed mass block, in the middle part of the balancing weight of described top, there is via hole, by the cover plate (3) of a band screw rod, described top balancing weight is fastened on fixed mass block top.
2. the dynamic vibration absorber that frequency according to claim 1 is directed adjustable, is characterized in that: on described pedestal (1), offer pedestal mounting hole.
3. the dynamic vibration absorber that frequency according to claim 1 and 2 is directed adjustable, it is characterized in that: be provided with connecting groove in the surrounding side of described fixed mass block, described gusset balancing weight inner side surface is provided with connection projection, to coordinate be arranged on the side of fixed mass block by gusset balancing weight by connecting projection with connecting groove.
4. the dynamic vibration absorber that frequency according to claim 3 is directed adjustable, is characterized in that: described connecting groove is wedge slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510534664.0A CN105134851B (en) | 2015-08-27 | 2015-08-27 | A kind of frequency orients adjustable dynamic vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510534664.0A CN105134851B (en) | 2015-08-27 | 2015-08-27 | A kind of frequency orients adjustable dynamic vibration absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105134851A true CN105134851A (en) | 2015-12-09 |
| CN105134851B CN105134851B (en) | 2017-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510534664.0A Active CN105134851B (en) | 2015-08-27 | 2015-08-27 | A kind of frequency orients adjustable dynamic vibration absorber |
Country Status (1)
| Country | Link |
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| CN (1) | CN105134851B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520434A (en) * | 2020-04-07 | 2020-08-11 | 重庆长安汽车股份有限公司 | Automobile back door vibration absorber |
| CN112413027A (en) * | 2019-08-23 | 2021-02-26 | 比亚迪股份有限公司 | Vibration absorption device, optimization design method of vibration absorption device and automobile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20030050623A (en) * | 2001-12-19 | 2003-06-25 | 현대자동차주식회사 | variable inertia type torsional vibration damper |
| CN2937057Y (en) * | 2006-08-16 | 2007-08-22 | 上海永大电梯设备有限公司 | Elevator car adjustable vibration absorber fixed on rope connector |
| CN102121506A (en) * | 2011-03-28 | 2011-07-13 | 重庆长安汽车股份有限公司 | Vibration absorber with adjustable frequency installed on suspended support of automobile |
| CN203161948U (en) * | 2013-03-21 | 2013-08-28 | 洛阳双瑞橡塑科技有限公司 | Multi-degree of freedom dynamic vibration absorber |
| CN203161947U (en) * | 2013-03-21 | 2013-08-28 | 洛阳双瑞橡塑科技有限公司 | Frequency-adjustable dynamic vibration absorber |
-
2015
- 2015-08-27 CN CN201510534664.0A patent/CN105134851B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030050623A (en) * | 2001-12-19 | 2003-06-25 | 현대자동차주식회사 | variable inertia type torsional vibration damper |
| CN2937057Y (en) * | 2006-08-16 | 2007-08-22 | 上海永大电梯设备有限公司 | Elevator car adjustable vibration absorber fixed on rope connector |
| CN102121506A (en) * | 2011-03-28 | 2011-07-13 | 重庆长安汽车股份有限公司 | Vibration absorber with adjustable frequency installed on suspended support of automobile |
| CN203161948U (en) * | 2013-03-21 | 2013-08-28 | 洛阳双瑞橡塑科技有限公司 | Multi-degree of freedom dynamic vibration absorber |
| CN203161947U (en) * | 2013-03-21 | 2013-08-28 | 洛阳双瑞橡塑科技有限公司 | Frequency-adjustable dynamic vibration absorber |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112413027A (en) * | 2019-08-23 | 2021-02-26 | 比亚迪股份有限公司 | Vibration absorption device, optimization design method of vibration absorption device and automobile |
| CN112413027B (en) * | 2019-08-23 | 2022-04-15 | 比亚迪股份有限公司 | Vibration absorption device, optimization design method of vibration absorption device and automobile |
| CN111520434A (en) * | 2020-04-07 | 2020-08-11 | 重庆长安汽车股份有限公司 | Automobile back door vibration absorber |
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| Publication number | Publication date |
|---|---|
| CN105134851B (en) | 2017-07-25 |
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Effective date of registration: 20190308 Address after: 400023, No. 260, Jianxin East Road, Jiangbei District, Chongqing Co-patentee after: Hefei Changan Automobile Co., Ltd. Patentee after: Chongqing Changan Automobile Co., Ltd. Address before: 400023, No. 260, Jianxin East Road, Jiangbei District, Chongqing Patentee before: Chongqing Changan Automobile Co., Ltd. |