CN204284298U - A kind of MR fluid shock absorber of powering based on brush - Google Patents
A kind of MR fluid shock absorber of powering based on brush Download PDFInfo
- Publication number
- CN204284298U CN204284298U CN201420685404.4U CN201420685404U CN204284298U CN 204284298 U CN204284298 U CN 204284298U CN 201420685404 U CN201420685404 U CN 201420685404U CN 204284298 U CN204284298 U CN 204284298U
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- housing
- brush
- shock absorber
- fluid shock
- groove
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- Vibration Prevention Devices (AREA)
Abstract
The utility model discloses a kind of MR fluid shock absorber of powering based on brush, comprise the housing of loop configuration, the inwall of housing is provided with bearing; Housing offers groove, groove is provided with cover plate, between groove and cover plate, form inner chamber, in inner chamber, be provided with quality loop, and the surrounding of quality loop is filled with magnetic flow liquid; The outer wall of housing is provided with the some groups of coils for generation of magnetic field, and the brush of promising coil supply electric current is installed in the upper and lower both sides of housing.When speed of crankshaft changes, the electric current on ring shaped conductive support can be changed, thus change the size that coil produces magnetic field, magnetic flow liquid its damping characteristic when changes of magnetic field can change, therefore this vibration damper can change the damping of vibration damper at any time according to the change of rotating speed, to adapt to different operating modes, reach the effect of vibration damping.As can be seen here, this MR fluid shock absorber is with a wide range of applications.
Description
Technical field
The utility model relates to the vibration damping field of engine crankshaft, is specifically related to a kind of MR fluid shock absorber of powering based on brush.
Background technique
The particularity of the crankshaft structure of motor car engine, has certain natural frequency of vibration.Can resonate under certain frequency, bent axle can be made to be subject to serious infringement, therefore need to design a kind of device to reduce the vibration of bent axle.The device the most often used is at present torsional vibration damper, and it mainly comprises two kinds: a kind of is silicon oil damper, and another kind is rubber shock absorber.The damping of traditional silicon oil damper inside is mainly produced by silicone oil, but because motor needs to work under different rotating speeds, need just can reach reasonable effectiveness in vibration suppression under different damping conditions, traditional silicon oil damper can not meet this condition.Therefore design and a kind ofly can constantly change the vibration damper of internally-damped also constantly change along with engine speed, significant.
Model utility content
For above-mentioned defect or deficiency, the purpose of this utility model is to provide a kind of MR fluid shock absorber of powering based on brush, changed the damping of the magnetorheological damping liquid in vibration damper, with the requirement enabling engine crankshaft meet vibration damping at different frequencies by the continuous change of engine speed simultaneously.
For reaching above object, the technical solution of the utility model is:
Comprise the housing of loop configuration, the inwall of housing is provided with bearing; Housing offers groove, groove is provided with cover plate, between groove and cover plate, form inner chamber, in inner chamber, be provided with quality loop, and the surrounding of quality loop is filled with magnetic flow liquid; The outer wall of housing is provided with the some groups of coils for generation of magnetic field, and the brush of promising coil supply electric current is installed in the upper and lower both sides of housing.
The upside of described housing is installed with annular fin, and brush is installed in annular fin.
Described brush is provided with ring shaped conductive support.
The outer wall of described housing is provided with group coil, and group coil is uniformly distributed along the outer wall circumference of housing.
The outer wall of described housing is provided with arc magnetic conductive part, coil winding is on arc magnetic conductive part.
The outer wall of described housing offers aperture, arc magnetic conductive part by keyhole welding on housing.
Described quality loop (4) is dentation structure.Compared with prior art, the beneficial effects of the utility model are:
The utility model provides a kind of MR fluid shock absorber of powering based on brush,
Be installed in rotating shaft, owing to offering groove on housing, and groove is provided with cover plate, inner chamber is formed between groove and cover plate, quality loop is provided with in inner chamber, and brush is set on housing, when rotating shaft changes the size of coil magnetic field when vibration occurs different rotating speeds by changing the size of input current thus changes the damping of magnetic flow liquid between quality loop and housing, the vibration of bent axle can be improved significantly.
Accompanying drawing explanation
Fig. 1 is a kind of MR fluid shock absorber schematic diagram one of powering based on brush of the present utility model.
Fig. 2 is a kind of MR fluid shock absorber schematic diagram two of powering based on brush of the present utility model.
In figure: 1, bearing, 2, magnetic flow liquid, 3, housing, 4, quality loop, 5, cover plate, 6, annular fin, 7, brush, 8, ring shaped conductive support, 9, coil.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
As Fig. 1,2, shown in, the utility model provides a kind of MR fluid shock absorber of powering based on brush, comprises the housing 3 of loop configuration, the inwall of housing 3 is provided with bearing 1; Housing 3 offers groove, groove is provided with cover plate 5, between groove and cover plate 5, form inner chamber, in inner chamber, be provided with quality loop 4, and the surrounding of quality loop 4 is filled with magnetic flow liquid 2; The outer wall of housing 3 is provided with the some groups of coils 9 for generation of magnetic field, and be installed with annular fin 6 on the upside of housing 3, annular fin 6 is installed the brush 7 that promising coil 9 supplies electric current, the downside of housing 3 is also provided with another brush 7, brush 7 is provided with ring shaped conductive support 8.
Preferably, the outer wall of the utility model middle shell 3 is provided with 4 groups of coils 9, and 4 groups of coils 9 are uniformly distributed along the outer wall circumference of housing 3, and be symmetrical set, the outer wall of housing 3 is provided with arc magnetic conductive part 12, coil 9 is wound on arc magnetic conductive part 12, wherein, the outer wall of housing 3 offers aperture, arc magnetic conductive part 12 by keyhole welding on housing.
In the utility model, quality loop 4 is designed to dentation structure, when quality loop 4, with housing 3, relative movement occurs, can increase damping force, reach better effectiveness in vibration suppression.
Working principle of the present utility model and working procedure:
Magnetic flow liquid is controlled fluid, is the suspension mixed by high magnetic permeability, low hysteresis small soft magnetic particles and non-magnetic liquid.This suspension presents low viscous Newtonian fluid characteristic under zero magnetic field condition; And under strong magnetic field action, then present the Bingham fluid characteristic of high viscosity, lazy flow, and along with the enhancing of electric current, magnetic field is strengthened, the shear yield strength of its fluid is larger, is applied to controllable damper with this characteristic.Because the stream of magnetic flow liquid under magnetic fields becomes be moment, reversible and it flows the shear yield strength after becoming and magnetic intensity has stable corresponding relation.
When the rotating speed of rotating shaft changes, can by the change of the electric current of ring shaped conductive support, change the electric current of coil, then also changed accordingly by the magnetic intensity of arc magnetic conductive part importing enclosure interior, thus change the damping of enclosure interior magnetic flow liquid, to adapt to different rotating speeds, vibration damping is carried out to bent axle.
Other feature of the present utility model is:
Have two ring shaped conductive supports to be positioned at the both sides of vibration damper in the axial direction, ring shaped conductive support is fixed in car body structure, when vibration damper rotates, by being installed on brush in annular fin to coil power supply.
Described housing has corresponding aperture, annular arc magnetic conductive part by keyhole welding on housing.
The coil of described brush by wire connected with outer casing arc magnetic conductive part is wound around, enclosure interior is imported when coil flows through current induced magnetic field, to reach the effect changing magnetorheological fluid damp, due to the ratio of rotating shaft actual amplitude and quiet torsional deflection and power gain A relevant with damping, carry out countershaft carry out vibration damping so damping can be changed by the size changing electric current.
Described magnetic flow liquid can flow at quality loop and enclosure interior space between the two.
A kind of MR fluid shock absorber of powering based on brush of the present utility model, is installed in rotating shaft.Change the size of coil magnetic field when vibration occurs different rotating speeds by the size changing input ring shaped conductive support current when rotating shaft thus change the damping of magnetic flow liquid between quality loop and housing, improving the vibration of bent axle significantly.
Claims (7)
1. based on the MR fluid shock absorber that brush is powered, it is characterized in that, comprise the housing (3) of loop configuration, the inwall of housing (3) is provided with bearing (1); (3) offer groove to housing, groove is provided with cover plate (5), form inner chamber between groove and cover plate (5), in inner chamber, be provided with quality loop (4), and the surrounding of quality loop (4) is filled with magnetic flow liquid (2); The outer wall of housing (3) is provided with the some groups of coils for generation of magnetic field (9), and housing (3) installs the brush (7) of promising coil (9) supply electric current in both sides up and down.
2. MR fluid shock absorber of powering based on brush according to claim 1, it is characterized in that, the upside of described housing (3) is installed with annular fin (6), and brush (7) is installed in annular fin (6).
3. MR fluid shock absorber of powering based on brush according to claim 1 and 2, is characterized in that, described brush (7) is provided with ring shaped conductive support (8).
4. MR fluid shock absorber of powering based on brush according to claim 1, it is characterized in that, the outer wall of described housing (3) is provided with 4 groups of coils (9), and 4 groups of coils (9) are uniformly distributed along the outer wall circumference of housing (3).
5. the MR fluid shock absorber of powering based on brush according to claim 1 or 4, it is characterized in that, the outer wall of described housing (3) is provided with arc magnetic conductive part (12), coil (9) is wound on arc magnetic conductive part (12).
6. MR fluid shock absorber of powering based on brush according to claim 5, is characterized in that, the outer wall of described housing (3) offers aperture, arc magnetic conductive part (12) by keyhole welding on housing.
7. MR fluid shock absorber of powering based on brush according to claim 1, is characterized in that, described quality loop (4) is dentation structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420685404.4U CN204284298U (en) | 2014-11-14 | 2014-11-14 | A kind of MR fluid shock absorber of powering based on brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420685404.4U CN204284298U (en) | 2014-11-14 | 2014-11-14 | A kind of MR fluid shock absorber of powering based on brush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204284298U true CN204284298U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420685404.4U Expired - Fee Related CN204284298U (en) | 2014-11-14 | 2014-11-14 | A kind of MR fluid shock absorber of powering based on brush |
Country Status (1)
| Country | Link |
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| CN (1) | CN204284298U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782339A (en) * | 2016-02-29 | 2016-07-20 | 重庆大学 | Variable-inertia and variable-damping torsion damper |
| CN106402253A (en) * | 2016-10-10 | 2017-02-15 | 杭州电子科技大学 | Torsional vibration adjustment device based on magnetorheology |
| CN109630596A (en) * | 2018-12-26 | 2019-04-16 | 嘉兴学院 | One kind rotatably damping adjustable silicone oil-magnetorheological torsional vibration damper |
-
2014
- 2014-11-14 CN CN201420685404.4U patent/CN204284298U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782339A (en) * | 2016-02-29 | 2016-07-20 | 重庆大学 | Variable-inertia and variable-damping torsion damper |
| CN106402253A (en) * | 2016-10-10 | 2017-02-15 | 杭州电子科技大学 | Torsional vibration adjustment device based on magnetorheology |
| CN106402253B (en) * | 2016-10-10 | 2018-09-04 | 杭州电子科技大学 | Based on magnetorheological twisting vibration regulating device |
| CN109630596A (en) * | 2018-12-26 | 2019-04-16 | 嘉兴学院 | One kind rotatably damping adjustable silicone oil-magnetorheological torsional vibration damper |
| CN109630596B (en) * | 2018-12-26 | 2020-09-11 | 嘉兴学院 | Rotary type damping-adjustable silicone oil-magnetorheological torsional vibration damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20161114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |