CN202674147U - Multi-level extrusion type magnetorheological damper - Google Patents
Multi-level extrusion type magnetorheological damper Download PDFInfo
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- CN202674147U CN202674147U CN 201220351121 CN201220351121U CN202674147U CN 202674147 U CN202674147 U CN 202674147U CN 201220351121 CN201220351121 CN 201220351121 CN 201220351121 U CN201220351121 U CN 201220351121U CN 202674147 U CN202674147 U CN 202674147U
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Abstract
The utility model relates to a magnetorheological damper, in particular to a multi-level extrusion type magnetorheological damper which is suitable for vibration isolation of engines or other devices. The damper comprises an upper end cover, an outer cylinder, a piston rod, a seal ring, a seal bolt, a work cavity, a lower end cover and a piston head. The damper is characterized by further comprising a magnetic isolation sleeve, a coil, an upper limit spring, a vice piston head, an inner cylinder and a lower limit spring, wherein the work cavity is divided into an inner work cavity and an outer work cavity by the inner cylinder, the work cavity is full of magnetorheological fluid, and the vice piston head and the piston head which are both connected with the piston rod respectively extrude the magnetorheological fluid back and forth in the two work cavities to produce radial flowing to produce damping force further. The coil is arranged between the outer cylinder and the magnetic isolation sleeve to provide a magnetic field which can be used for adjusting the damping force. The output force of the damper is greatly larger than that of a common magnetorheological damper, and the damper can particularly avoid impact of substantially strong vibration on the device in severe environments, and has the advantages of being reasonable in design, simple in structure, high in efficiency, rapid to response, strong in work reliability, good in vibration reduction effect, and long in service life.
Description
Technical field
The present invention relates to a kind of MR damper, particularly a kind of multistage extruding type MR damper is applicable to the vibration isolation of motor or other equipment.
Background technique
The intelligent vibration damping apparatus that MR damper can be adjusted in real time as a kind of damping, in present productive life, be widely used, the size of its damping force can be carried out remote stepless by the electric current [strength size in the control coil and be regulated, the size of its output damping force is not only relevant with the size of control electric current [strength, but also relevant with the effective work area between clutch release slave cylinder and the piston.MR damper can be divided into integrated mode between valve mode, shear mode, squeeze mode and above-mentioned pattern according to mode of operation.The pressure that studies show that the lower generation of other patterns of pressure ratio (valve mode, shear mode) that produces under the magnetorheological squeeze mode all wants high.Common MR damper clutch release slave cylinder and the effective work area between the piston are smaller, if increase the effective work area of existing MR damper, the clutch release slave cylinder of MR damper and the size of piston just need to become large, and it is large that the size of whole MR damper will become accordingly.
Summary of the invention
Purpose of the present invention is exactly the less deficiency of damping force that produces for existing MR damper, provides a kind of damping force larger multistage extruding type MR damper.
Realize that the technological scheme that purpose of the present invention is taked is:
A kind of multistage extruding type MR damper, comprise upper end cap, outer cylinder body, piston rod, seal ring, sealing bolt, active chamber, lower end cap and lower piston head, it is characterized in that: it also comprises magnetic shield cylinder, coil, limit spring, sub-piston head, inner cylinder body and lower limit spring, described inner cylinder body has been divided into inside and outside two active chambers with active chamber, be full of magnetic flow liquid in the described active chamber, the sub-piston head and the piston head that are connected on the piston rod push respectively magnetic flow liquid fluid generation Radial Flow back and forth in inside and outside two active chambers, and then produce damping force.Be provided with coil between outer cylinder body and the magnetic shield cylinder, magnetic field is provided, can be used for adjusting in real time the size of damping force.
Be connected with from inside to outside lower limit spring, inner cylinder body, magnetic shield cylinder, coil and outer cylinder body on the described lower end cap in turn, upper end cap is connected on the outer cylinder body.Offer center hole at piston head, inner cylinder body, sub-piston head and upper end cap, the aperture of inner cylinder body center hole is greater than the piston-rod lower end diameter, piston head and sub-piston head all with piston rod interference fit, upper end cap and piston rod Spielpassung, and seal ring sealing is arranged.Have aperture on the upper end cap, be used for drawing winding wire.Also be provided with hand-hole on the upper end cap, be used in cylinder body, annotating magnetic flow liquid, and be provided with sealing bolt for sealing, prevent the magnetic flow liquid effusion.
The present invention has the following advantages and good effect:
1, the multistage extruding type MR damper of the present invention has inside and outside two working cavities, increased the working surface between clutch release slave cylinder and the piston, and then increased effective work area of MR damper, owing to having increased an outer active chamber and sub-piston head, effective work area increased by one times at least.
2, the present invention has also utilized magnetorheological squeeze mode, improve the damping force under the unit useful area, when using same coil and having identical electric current [strength, the ouput force of multistage extruding type MR damper of the present invention will be much larger than common MR damper.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 and Fig. 3 are fundamental diagrams of the present invention.
Fig. 4 is the structural representation of one embodiment of the present invention.
Fig. 5 is the structural representation of another embodiment of the present invention.
Fig. 6 is the structural representation of another mode of execution of the present invention.
Embodiment
Referring to Fig. 1: multistage extruding type MR damper of the present invention is comprised of upper end cap 1, outer cylinder body 2, magnetic shield cylinder 3, upper limit spring 4, piston rod 5, seal ring 6, sealing bolt 7, sub-piston head 8, coil 9, active chamber 10, inner cylinder body 11, lower end cap 12, lower limit spring 13 and lower piston head 14.Be connected with from inside to outside lower limit spring 13, inner cylinder body 11, magnetic shield cylinder 3, coil 9 and outer cylinder body 2 on the lower end cap 12 in turn, upper end cap 1 is connected on the outer cylinder body 2.Offer center hole at piston head 14, inner cylinder body 11, sub-piston head 8 and upper end cap 1, the aperture of inner cylinder body 11 center holes is greater than the piston-rod lower end diameter, piston head 14 and sub-piston head 8 all with piston rod 5 interference fit, upper end cap 1 and piston rod 5 Spielpassung, and seal ring 6 sealings are arranged.Be provided with coil 9 between outer cylinder body 2 and the magnetic shield cylinder 3, magnetic field is provided, can adjust in real time by the electric current [strength in the adjustment coil size of damping force.Have aperture on the upper end cap 1, be used for drawing winding wire.Also be provided with hand-hole on the upper end cap, be used in cylinder body, annotating magnetic flow liquid, and be provided with sealing bolt 7 for sealing, prevent the magnetic flow liquid effusion.
Described piston rod 5 can be integrated type with piston head 14, also can be detachable; Piston rod 5 can be interference fit with the Placement of piston head 14 and sub-piston head 8, be threaded or other are fastenedly connected mode.
Piston rod 5 is outer to be provided with two or more limit spring for supporting static load, spacing and storage compartment energy.
Working principle of the present invention is: referring to Fig. 2, when piston rod 5 drive sub-piston heads 8 move upward, the magnetic flow liquid of sub-piston head 8 upper-end surfaces in the outer active chamber be subject to sub-piston head 8 and outer cylinder body 2 inwalls extruding and along Radial Flow, produce downward damping force, in like manner the magnetic flow liquid of piston head 14 upper-end surfaces of interior working cavity be subject to inner cylinder body 11 and piston head 14 extruding and along Radial Flow, under the effect of externally-applied magnetic field, produce downward damping force, the damping force superposition that the magnetic rheological liquid extrusion flow movable property of interior exocoel is given birth on piston rod 5, exportable larger damping force.Referring to Fig. 3, when piston rod 5 drive sub-piston heads 8 moved downward, the magnetic flow liquid of outer working cavity was subject to the extruding of sub-piston head 8 lower end surfaces and inner cylinder body 11 outer walls and radially flows, and produces damping force upwards; The magnetic flow liquid of interior working cavity is subject to the extruding of piston 14 lower end surfaces and lower end cap 12 internal surfaces and produces Radial Flow, and then produces damping force upwards, the damping force superposition that two places produce on piston rod 5, exportable larger damping force.Under the effect of externally-applied magnetic field, the extrusion flow dynamic response of magnetic flow liquid changes, and when the electric current in the coil increased, the mobile variation of magnetic flow liquid, yield strength became large, are rendered as the solid-state state of class, so that the damping force of damper output further increases.In addition, that upper limit spring 4 and lower limit spring 13 can play a part is spacing, support static load and storage compartment energy, and can prevent piston head 14 bump lower end caps 12 and sub-piston head 8 bump upper end caps 1, the appropriate design stroke can prevent piston head 14 and sub-piston head 8 bump inner cylinder bodies 11, also can continue to have additional limit spring at piston rod, prevent with the bump of inner cylinder body 11 and increase rigidity of the present invention.
Referring to Fig. 4, be one embodiment of the invention.Piston rod 5 is an one-piece piston bar, and piston head 14 originally and piston rod 5 are done as a whole, sub-piston head 8 and one-piece piston bar 5 interference fit.
Referring to Fig. 5, it is another embodiment of the present invention.Piston rod 5 and piston head 14 and sub-piston head 8 are connected by fine thread.
Referring to Fig. 6, it is an again embodiment of the present invention.Piston rod 5 is connected by regular screw threads by fine thread with piston head 14 and sub-piston head 8 and connects, and lock nut 15 and 16 are housed.
Claims (8)
1. multistage extruding type MR damper, this damper comprises upper end cap, outer cylinder body, piston rod, seal ring, sealing bolt, active chamber, lower end cap and piston head, it is characterized in that: it also comprises magnetic shield cylinder, coil, upper limit spring, sub-piston head, inner cylinder body and lower limit spring, described inner cylinder body is divided into inside and outside two active chambers with active chamber, be full of magnetic flow liquid in the described active chamber, the sub-piston head and the piston head that are connected on the piston rod push respectively magnetic flow liquid fluid generation Radial Flow back and forth in two active chambers, and then produce damping force; Be provided with coil between outer cylinder body and the magnetic shield cylinder, magnetic field is provided, can be used for adjusting in real time the size of damping force.
2. a kind of multistage extruding type MR damper according to claim 1, it is characterized in that: described lower limit spring, inner cylinder body, magnetic shield cylinder, coil and outer cylinder body are connected in turn on the lower end cap from inside to outside, and upper end cap is connected on the outer cylinder body.
3. a kind of multistage extruding type MR damper according to claim 1, it is characterized in that: offer center hole on described piston head, inner cylinder body, sub-piston head and the upper end cap, the aperture of inner cylinder body center hole is greater than the piston-rod lower end diameter, piston head and sub-piston head all with the piston rod interference fit, upper end cap and piston rod Spielpassung, and the seal ring sealing is arranged.
4. a kind of multistage extruding type MR damper according to claim 1, it is characterized in that: described coil is arranged between outer cylinder body and the magnetic shield cylinder.
5. a kind of multistage extruding type MR damper according to claim 1 is characterized in that: the aperture that has to draw winding wire on the described upper end cap.
6. a kind of multistage extruding type MR damper according to claim 1 is characterized in that: also be provided with on the described upper end cap to annotate the hand-hole of magnetic flow liquid in cylinder body, and be provided with sealing bolt for sealing and prevent the magnetic flow liquid effusion.
7. a kind of multistage extruding type MR damper according to claim 1, it is characterized in that: described piston rod and piston head can be integrated type, also can be detachables; Piston rod is interference fit with the Placement of piston head, is threaded or other Placements.
8. a kind of multistage extruding type MR damper according to claim 1 is characterized in that: piston rod is provided with two or more limit spring for supporting static load, spacing and storage compartment energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220351121 CN202674147U (en) | 2012-07-19 | 2012-07-19 | Multi-level extrusion type magnetorheological damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220351121 CN202674147U (en) | 2012-07-19 | 2012-07-19 | Multi-level extrusion type magnetorheological damper |
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| CN202674147U true CN202674147U (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220351121 Expired - Fee Related CN202674147U (en) | 2012-07-19 | 2012-07-19 | Multi-level extrusion type magnetorheological damper |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148157A (en) * | 2012-07-19 | 2013-06-12 | 吉林大学 | Multistage extrusion-type magneto-rheological damper |
| CN103148158A (en) * | 2013-03-15 | 2013-06-12 | 重庆大学 | Magnetorheological hydraulic engine mount based on extrusion mode |
| CN104088953A (en) * | 2014-06-30 | 2014-10-08 | 张世亮 | Magnetorheological damper with adjustable piston net cross section area |
| CN105114510A (en) * | 2013-06-25 | 2015-12-02 | 蒋盘君 | Working method for multi-stage buffer controlled by processor module |
| CN105179576A (en) * | 2015-09-30 | 2015-12-23 | 中国人民解放军装甲兵工程学院 | Articulated type magneto-rheological vibration damper |
| CN105626758A (en) * | 2016-03-22 | 2016-06-01 | 铱格斯曼航空科技集团有限公司 | Magneto-rheological damper used for installation and debugging of helicopter high-definition camera |
| CN106168264A (en) * | 2016-08-11 | 2016-11-30 | 张广 | Under squeeze mode, magnetic flow liquid and piezoelectricity hybrid artillery recoil width shake frequency antivibrator |
| CN107030522A (en) * | 2017-05-24 | 2017-08-11 | 西北工业大学 | The magnetorheological damping supporting device of vibration suppression is processed towards complex thin-wall component |
| CN107939895A (en) * | 2017-11-13 | 2018-04-20 | 东北大学 | Improve the method and vibration isolator of the damping force of squash type magnetic flow liquid passive vibration isolation device |
| CN110173540A (en) * | 2019-05-15 | 2019-08-27 | 嘉兴学院 | The disc type MR damper of antitorque punching |
| CN111895031A (en) * | 2020-07-28 | 2020-11-06 | 河海大学 | Magnetorheological fluid damper with heat insulation function |
| WO2023279748A1 (en) * | 2021-07-07 | 2023-01-12 | 深圳市朝上科技有限责任公司 | Hybrid damping mode-based high-output-force vibration isolation mount |
-
2012
- 2012-07-19 CN CN 201220351121 patent/CN202674147U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148157B (en) * | 2012-07-19 | 2016-05-18 | 吉林大学 | Multistage squash type MR damper |
| CN103148157A (en) * | 2012-07-19 | 2013-06-12 | 吉林大学 | Multistage extrusion-type magneto-rheological damper |
| CN103148158A (en) * | 2013-03-15 | 2013-06-12 | 重庆大学 | Magnetorheological hydraulic engine mount based on extrusion mode |
| CN103148158B (en) * | 2013-03-15 | 2015-01-07 | 重庆大学 | Magnetorheological hydraulic engine mount based on extrusion mode |
| CN105114510A (en) * | 2013-06-25 | 2015-12-02 | 蒋盘君 | Working method for multi-stage buffer controlled by processor module |
| CN104088953A (en) * | 2014-06-30 | 2014-10-08 | 张世亮 | Magnetorheological damper with adjustable piston net cross section area |
| CN105179576B (en) * | 2015-09-30 | 2017-08-11 | 中国人民解放军装甲兵工程学院 | A kind of articulated type magnetic rheological vibration damper |
| CN105179576A (en) * | 2015-09-30 | 2015-12-23 | 中国人民解放军装甲兵工程学院 | Articulated type magneto-rheological vibration damper |
| CN105626758A (en) * | 2016-03-22 | 2016-06-01 | 铱格斯曼航空科技集团有限公司 | Magneto-rheological damper used for installation and debugging of helicopter high-definition camera |
| CN106168264A (en) * | 2016-08-11 | 2016-11-30 | 张广 | Under squeeze mode, magnetic flow liquid and piezoelectricity hybrid artillery recoil width shake frequency antivibrator |
| CN107030522A (en) * | 2017-05-24 | 2017-08-11 | 西北工业大学 | The magnetorheological damping supporting device of vibration suppression is processed towards complex thin-wall component |
| CN107939895A (en) * | 2017-11-13 | 2018-04-20 | 东北大学 | Improve the method and vibration isolator of the damping force of squash type magnetic flow liquid passive vibration isolation device |
| CN107939895B (en) * | 2017-11-13 | 2019-07-19 | 东北大学 | Improve the method and vibration isolator of the damping force of squash type magnetorheological fluid passive vibration isolation device |
| CN110173540A (en) * | 2019-05-15 | 2019-08-27 | 嘉兴学院 | The disc type MR damper of antitorque punching |
| CN111895031A (en) * | 2020-07-28 | 2020-11-06 | 河海大学 | Magnetorheological fluid damper with heat insulation function |
| WO2023279748A1 (en) * | 2021-07-07 | 2023-01-12 | 深圳市朝上科技有限责任公司 | Hybrid damping mode-based high-output-force vibration isolation mount |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20160719 |
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| CF01 | Termination of patent right due to non-payment of annual fee |