CN207036444U - A kind of dynamic vibration absorber intrinsic frequency test fixture - Google Patents
A kind of dynamic vibration absorber intrinsic frequency test fixture Download PDFInfo
- Publication number
- CN207036444U CN207036444U CN201720783552.3U CN201720783552U CN207036444U CN 207036444 U CN207036444 U CN 207036444U CN 201720783552 U CN201720783552 U CN 201720783552U CN 207036444 U CN207036444 U CN 207036444U
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- China
- Prior art keywords
- dynamic vibration
- vibration absorber
- absorber
- mass block
- intrinsic frequency
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Abstract
The utility model provides a kind of dynamic vibration absorber intrinsic frequency test fixture, including base body, cylindrical installation base is set on the base body, the installation base Upper vertical sets screw rod, dynamic vibration absorber is arranged with the screw rod, the nut that the dynamic vibration absorber is threadedly attached in the screw rod top is fixed on the installation base；The dynamic vibration absorber includes the absorber mass block of tubular, inner sleeve is set inside the absorber mass block, and the upper surface of the inner sleeve is concordant with the upper surface of the absorber mass block, rubber ring is provided between the inner sleeve and the absorber mass block, and the upper surface of the rubber ring is less than the upper surface of the absorber mass block.The utility model is not only simple in structure, and cost is cheap, it is easy to accomplish, and effectively increase the testing efficiency of dynamic vibration absorber intrinsic frequency.
Description
Technical field
It the utility model is related to automobile technical field, and in particular to a kind of dynamic vibration absorber intrinsic frequency test fixture.
Background technology
With the continuous improvement that the fast development of automobile industry and user are required car comfort, auto NVH control skill
Art seems more and more important.Because dynamic vibration absorber is a kind of typical active control system, control system can shake very well
It is dynamic, therefore be widely applied in automobile vibration control optimizes with vehicle NVH performances.Vehicle power bump leveller developing history is
Exceed a century, widely used in automotive field.The vibration noise problem occurred in the automotive development later stage, the effect of dynamic vibration absorber are outstanding
Its is important, greatly to vehicle body, vehicle frame, as low as suspension, power transmission shaft etc., can use dynamic vibration absorber vibration and noise reducing.
It is well known that the effect of vibration and noise reduction of dynamic vibration absorber is directly by its position, mass ratio, intrinsic frequency, damping ratio
Determined etc. parameter.Need to test its intrinsic frequency when dynamic vibration absorber is applied, to ensure its effect of vibration and noise reduction.So
And the intrinsic frequency test to dynamic vibration absorber at present is also needed to by large-scale baroque testing stand, not only cost is high
High and testing efficiency is low.
Utility model content
In view of this, the utility model provides a kind of dynamic vibration absorber intrinsic frequency test fixture, for solving power suction
Shake device intrinsic frequency test need by large-scale testing stand, it is low to there is complicated, with high costs and testing efficiency
Problem.
In order to solve the above technical problems, the utility model provides a kind of dynamic vibration absorber intrinsic frequency test fixture, including
Base body, cylindrical installation base is set on the base body, and the installation base Upper vertical sets screw rod, the spiral shell
Be arranged with dynamic vibration absorber on bar, the dynamic vibration absorber be threadedly attached in the screw rod top nut be fixed on it is described
On installation base；
The dynamic vibration absorber includes the absorber mass block of tubular, and inner sleeve is set inside the absorber mass block,
And the upper surface of the inner sleeve is concordant with the upper surface of the absorber mass block, the inner sleeve and the absorber mass
Rubber ring is provided between block, and the upper surface of the rubber ring is less than the upper surface of the absorber mass block.
Further, the top of the absorber mass block is symmetrically arranged with a pair of installing plates, the installing plate in front and rear
On offer mounting hole, the installing plate upper surface is provided with vibrating sensor.
Further, round platform is set on the base body, and the installation base is arranged on the round platform.
Further, the installing plate outer end is arc surface.
Further, identifying body is set to be used for the position for identifying vibrating sensor, the identifying body bag on the installing plate
Include the groove being arranged on the installing plate and the screwed hole being arranged in the groove.
Above-mentioned technical proposal of the present utility model has the beneficial effect that：The utility model is intrinsic for dynamic vibration absorber
Frequency test needs the problem of existing structure operation is complicated, with high costs and testing efficiency is low by large-scale platform,
A kind of dynamic vibration absorber intrinsic frequency test fixture is provided, it includes base body, and cylindrical peace is provided with base body
Dress boss is used to carry dynamic vibration absorber, sets screw rod in installation base Upper vertical, dynamic vibration absorber is arranged with screw rod,
And dynamic vibration absorber is threadedly attached in the nut on screw rod top and is fixed on installation base, so as to realize dynamic vibration absorber
Fast Installation dismounting, and then improve dynamic vibration absorber intrinsic frequency testing efficiency.
Meanwhile dynamic vibration absorber includes the absorber mass block of tubular, inner sleeve is set inside absorber mass block, and
The upper surface of inner sleeve is concordant with the upper surface of absorber mass block, and rubber is provided between inner sleeve and absorber mass block
Circle, elastic damping element of the rubber ring as dynamic vibration absorber, and the upper surface of rubber ring are less than the upper end of absorber mass block
Face, such one side rubber ring can play damping action to the vibrational excitation that mass is subject to, and on the other hand can be rubber
Enclose stress deformation and space is provided, avoid rubber ring deformation from being obstructed to influence the damping of rubber ring.
In addition, being symmetrically arranged with a pair of installing plates in front and rear on the top of absorber mass block, offer on a mounting board
Mounting hole, and surface is provided with vibrating sensor on a mounting board, such one side mounting hole can be used in dynamic vibration absorber
Mass adjust- ment, and then on the other hand the intrinsic frequency of motivation of adjustment bump leveller is easy to cloth on a mounting board to meet actual demand
Put vibrating sensor to test for vibration data, obtain transfer curve so as to obtain the intrinsic frequency of the bump leveller.
The utility model is not only simple in structure, and cost is cheap, it is easy to accomplish, and it is intrinsic to effectively increase dynamic vibration absorber
The testing efficiency of frequency.
Brief description of the drawings
Fig. 1 is the structural representation of the first embodiment of the utility model；
Fig. 2 is the structural representation of dynamic vibration absorber in the utility model the first embodiment；
Fig. 3 is the structural representation of second of embodiment of the utility model；
Fig. 4 is the structural representation of dynamic vibration absorber in the utility model the third embodiment.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
The technical scheme of the utility model embodiment is clearly and completely described to accompanying drawing 4 for the accompanying drawing 1 of type embodiment.Obviously,
Described embodiment is part of the embodiment of the present utility model, rather than whole embodiments.Based on this described reality
The every other embodiment obtained with new embodiment, those of ordinary skill in the art, belong to the utility model protection
Scope.
Embodiment one：
As depicted in figs. 1 and 2, a kind of dynamic vibration absorber intrinsic frequency test fixture, including base body 1, the base
Cylindrical installation base 2 is set on body 1, and the Upper vertical of installation base 2 sets screw rod 3, is arranged with the screw rod 3 dynamic
Power bump leveller 4, the nut 5 that the dynamic vibration absorber 4 is threadedly attached in the top of screw rod 3 are fixed on the installation base
On 2；
The dynamic vibration absorber 4 includes the absorber mass block 41 of tubular, in the inside of absorber mass block 41 is set
Sleeve pipe 42, and the upper surface of the inner sleeve 42 is concordant with the upper surface of the absorber mass block 41, the inner sleeve 42 with
Rubber ring 43 is provided between the absorber mass block 41, and the upper surface of the rubber ring 43 is less than the absorber mass
The upper surface of block 41.
The outer end of installing plate 6 is arc surface.
In the embodiment, there is provided a kind of both simple in construction, cost is cheap, it is easy to accomplish, and can enough effectively improves power suction
The dynamic vibration absorber intrinsic frequency test fixture of the testing efficiency for device intrinsic frequency of shaking, the frock are used and set on base body
Cylindrical installation base, on installation base top, branch sets screw rod, and dynamic vibration absorber, and dynamic absorber are arranged on screw rod
The nut that device is threadedly attached in screw rod top is fixed on structure on installation base, so to carry out dynamic vibration absorber intrinsic
Dynamic vibration absorber need to be only set in during frequency test on screw rod and be realized with nut and fastened, so as to realize the fast of dynamic vibration absorber
Fast installing/dismounting, and then improve the testing efficiency of dynamic vibration absorber intrinsic frequency.In addition, dynamic vibration absorber includes the absorbing of tubular
Device mass, inner sleeve, and the upper surface of inner sleeve and the upper surface of absorber mass block are set inside absorber mass block
Concordantly, rubber ring, elastic damping member of the rubber ring as dynamic vibration absorber are provided between inner sleeve and absorber mass block
Part, and the upper surface of rubber ring be less than absorber mass block upper surface, such one side rubber ring can to mass by
Vibrational excitation play damping action, on the other hand can provide space for rubber ring stress deformation, avoid rubber ring deformation by
Hinder to influence the damping of rubber ring.
Embodiment two：
As shown in figure 3, a kind of dynamic vibration absorber intrinsic frequency test fixture, including base body 1, the base body 1
Upper to set cylindrical installation base 2, the Upper vertical of installation base 2 sets screw rod 3, dynamic suction is arranged on the screw rod 3
Shaken device 4, and the nut 5 that the dynamic vibration absorber 4 is threadedly attached in the top of screw rod 3 is fixed on the installation base 2；
The dynamic vibration absorber 4 includes the absorber mass block 41 of tubular, in the inside of absorber mass block 41 is set
Sleeve pipe 42, and the upper surface of the inner sleeve 42 is concordant with the upper surface of the absorber mass block 41, the inner sleeve 42 with
Rubber ring 43 is provided between the absorber mass block 41, and the upper surface of the rubber ring 43 is less than the absorber mass
The upper surface of block 41.
The top of the absorber mass block 41 is symmetrically arranged with a pair of installing plates 6 in front and rear, is opened up on the installing plate 6
There is mounting hole 7, the upper surface of installing plate 6 is provided with vibrating sensor 8.
Round platform 9 is set on the base body 1, and the installation base 2 is arranged on the round platform 9.
The outer end of installing plate 6 is arc surface.
In the embodiment, for the ease of the quality of motivation of adjustment bump leveller, and then the intrinsic frequency of motivation of adjustment bump leveller
To meet actual demand, a pair of installing plates are symmetrically arranged with front and rear on the top of absorber mass block, and open on a mounting board
Provided with mounting hole, while for the ease of arrangement vibrating sensor with test vibration data, surface is provided with vibration on a mounting board
Sensor.In addition, in order to avoid dynamic vibration absorber bottom and base body are interfered, and then the characteristic of absorber mass block is influenceed,
Round platform is set on base body, and installation base is arranged on round platform.
Embodiment three：
As shown in figure 4, the difference of itself and embodiment two is：
Identifying body is set to be used for the position for identifying vibrating sensor 8 on the installing plate 6, the identifying body includes being arranged on
Groove 10 on the installing plate 6 and the screwed hole 11 being arranged in the groove 10.
In the embodiment, for the ease of the unified position for setting vibrating sensor, avoid each position different
Cause the error of measurement result, be provided with identifying body on a mounting board, the identifying body include setting groove on a mounting board with
And the screwed hole in groove is arranged on, such groove can play a part of home position, and screwed hole can be by vibrating sensor
Fix on a mounting board.
Use principle of the present utility model is as follows：When carrying out the test of dynamic vibration absorber intrinsic frequency, power is inhaled first
The device that shakes is set on screw rod, and then dynamic vibration absorber is pressed on the installation base on base body with nut, then passed through
The shock sensor being arranged on dynamic vibration absorber can carry out intrinsic frequency test job, when needing to do replacing dynamic vibration absorber
When, nut need to only be disassembled to the quick-replaceable that dynamic vibration absorber can be achieved from screw rod, so as to effectively increase power
The testing efficiency of bump leveller intrinsic frequency.
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of principle described in the utility model is not departed from, some improvements and modifications can also be made, these improvement
The scope of protection of the utility model is also should be regarded as with retouching.
Claims (5)
- A kind of 1. dynamic vibration absorber intrinsic frequency test fixture, it is characterised in that：Including base body (1), the base body (1) cylindrical installation base (2) is set on, and installation base (2) Upper vertical sets screw rod (3), covered on the screw rod (3) Provided with dynamic vibration absorber (4), the nut (5) that the dynamic vibration absorber (4) is threadedly attached in the screw rod (3) top is fixed On the installation base (2)；The dynamic vibration absorber (4) includes the absorber mass block (41) of tubular, is set inside the absorber mass block (41) Inner sleeve (42), and the upper surface of the inner sleeve (42) is concordant with the upper surface of the absorber mass block (41), it is described interior Rubber ring (43) is provided between sleeve pipe (42) and the absorber mass block (41), and the upper surface of the rubber ring (43) is low In the upper surface of the absorber mass block (41).
- A kind of 2. dynamic vibration absorber intrinsic frequency test fixture as claimed in claim 1, it is characterised in that：The bump leveller matter The top of gauge block (41) is symmetrically arranged with a pair of installing plates (6) in front and rear, and mounting hole (7), institute are offered on the installing plate (6) State installing plate (6) upper surface and be provided with vibrating sensor (8).
- A kind of 3. dynamic vibration absorber intrinsic frequency test fixture as claimed in claim 1, it is characterised in that：The base body (1) round platform (9) is set on, and the installation base (2) is arranged on the round platform (9).
- A kind of 4. dynamic vibration absorber intrinsic frequency test fixture as claimed in claim 2, it is characterised in that：The installing plate (6) outer end is arc surface.
- A kind of 5. dynamic vibration absorber intrinsic frequency test fixture as claimed in claim 2, it is characterised in that：The installing plate (6) identifying body is set to be used for the position for identifying vibrating sensor (8) on, the identifying body includes being arranged on the installing plate (6) On groove (10) and the screwed hole (11) that is arranged in the groove (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720783552.3U CN207036444U (en) | 2017-06-30 | 2017-06-30 | A kind of dynamic vibration absorber intrinsic frequency test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720783552.3U CN207036444U (en) | 2017-06-30 | 2017-06-30 | A kind of dynamic vibration absorber intrinsic frequency test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207036444U true CN207036444U (en) | 2018-02-23 |
Family
ID=61466398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720783552.3U Expired - Fee Related CN207036444U (en) | 2017-06-30 | 2017-06-30 | A kind of dynamic vibration absorber intrinsic frequency test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207036444U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186555A (en) * | 2019-05-28 | 2019-08-30 | 平湖众力汽车部件有限公司 | The tool fixture of on-line checking intrinsic frequency |
-
2017
- 2017-06-30 CN CN201720783552.3U patent/CN207036444U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186555A (en) * | 2019-05-28 | 2019-08-30 | 平湖众力汽车部件有限公司 | The tool fixture of on-line checking intrinsic frequency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 Termination date: 20200630 |
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| CF01 | Termination of patent right due to non-payment of annual fee |