CN203516580U - Self-sealing magnetorheological damper - Google Patents
Self-sealing magnetorheological damper Download PDFInfo
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- CN203516580U CN203516580U CN201320569952.6U CN201320569952U CN203516580U CN 203516580 U CN203516580 U CN 203516580U CN 201320569952 U CN201320569952 U CN 201320569952U CN 203516580 U CN203516580 U CN 203516580U
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- sealing
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- piston rod
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- magnetic clamp
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Abstract
The utility model discloses a self-sealing magnetorheological damper. The self-sealing magnetorheological damper is characterized in that a first O-shaped sealing ring is arranged between a sealing body of the self-sealing magnetorheological damper and a cylinder body, a third permanent magnet ring, a step seal, a second O-shaped sealing ring and a framework seal are arranged between the sealing body and a piston rod, and the third permanent magnet ring, the step seal, the second O-shaped sealing ring and the framework seal are embedded into the sealing body. The self-sealing magnetorheological damper has the advantages that multi-level sealing is achieved, a magnetic field can exist in a gap between the piston rod and the sealing body through the third permanent magnet ring, when magnetorheological fluid flows into the gap between the piston rod and the sealing body, the magnetorheological fluid is changed to be in a semi-solidified state due to the change of the viscosity of the magnetorheological fluid under the action of the magnetic field, the viscosity of the magnetorheological fluid is increased along with increase of the intensity of the magnetic field, the magnetorheological fluid cannot easily leak from the positions of dynamic sealing, and the sealing effect is further improved. Therefore, according to the self-sealing magnetorheological damper, the good dynamic sealing effect is achieved by using the changes of the viscosity of the magnetorheological fluid, self sealing of the self-sealing magnetorheological damper is achieved, and the sealing effect is ideal.
Description
Technical field
The utility model relates to a kind of MR damper, especially relates to a kind of self-sealed MR damper.
Background technique
MR damper is to utilize the quick reversible rheological properties of magnetic flow liquid under high magnetic fields and a kind of vibration control apparatus of making, and this device has good effectiveness in vibration suppression, and the size of its damping force can be carried out remote stepless adjusting by controlling power supply.Common MR damper is generally by cylinder body, piston, piston rod and field coil, piston is positioned at cylinder body, in cylinder body, be full of magnetic flow liquid, be provided with the seal that prevents that magnetic flow liquid from leaking between piston and cylinder body, during work, piston and cylinder body carry out relative movement.
Between seal and cylinder body, be sealed into static seal, sealing effect is better.Between piston rod and seal, be sealed into motive sealing, because the relative movement between piston rod and seal easily causes magnetic flow liquid, leak, and the leakage of magnetic flow liquid mainly occur in motive sealing place.The leakage problem of the magnetic flow liquid of MR damper is a key factor of restriction MR damper extensive use always.Therefore, be necessary to improve the sealing of MR damper, the sealing of motive sealing place especially, expands the extent of spreading amd application of MR damper.
Summary of the invention
Technical problem to be solved in the utility model is: for the deficiencies in the prior art, provide a kind of self-sealed MR damper of good sealing effect.
The utility model solves the problems of the technologies described above adopted technological scheme: a kind of self-sealed MR damper, comprise cylinder body, in described cylinder body, be provided with piston and piston rod, described piston coaxial is set on described piston rod, on the outer surface of described piston, along it, be circumferentially provided with first ring connected in star and the second annular groove, in described first ring connected in star, be provided with the first field coil and the first permanent-magnetic clamp, the first described field coil is wrapped in the outside of the first described permanent-magnetic clamp, in the second described annular groove, be provided with the second field coil and the second permanent-magnetic clamp, the second described field coil is wrapped in the outside of the second described permanent-magnetic clamp, the first described permanent-magnetic clamp is relative with the polarity of the second described permanent-magnetic clamp, the first described field coil and the described anti-phase series connection of the second field coil, between the two ends of described piston rod and described cylinder body, be provided with seal, between described seal and described cylinder body, be provided with an O RunddichtringO, between described seal and described piston rod, be provided with the 3rd permanent-magnetic clamp, Si Te envelope, the 2nd O RunddichtringO and skeleton envelope, the 3rd described permanent-magnetic clamp, this described special envelope, the 2nd described O RunddichtringO and described skeleton envelope are all embedded in described seal.
The 3rd described permanent-magnetic clamp is comprised of multi-disc arcuation permanent magnetic tile.The first permanent-magnetic clamp, the second permanent-magnetic clamp and the 3rd permanent-magnetic clamp form by multi-disc arcuation permanent magnetic tile, facilitate the installation of the first permanent-magnetic clamp, the second permanent-magnetic clamp and the 3rd permanent-magnetic clamp, are conducive to improve installation precision.
The 3rd described permanent-magnetic clamp is comprised of three arcuation permanent magnetic tiles of filling the span of a man's arms on described piston rod.When improving installation precision, can simplified processing process.
The two ends of described cylinder body are respectively arranged with front cover and rear end cover, and described piston rod, through described front cover, is provided with H839 type dust-proof seal ring between described front cover and described piston rod.H839 type dust-proof seal ring plays further dustproof and sealing effect.
Described piston is fixedly connected with by locating stud with described piston rod.Be convenient to install, fixing reliable, make slippage and rotation can not occur between piston and piston rod.
Compared with prior art, the utility model has the advantage of: the self-sealed MR damper of the utility model, between its seal and cylinder body, be provided with an O RunddichtringO, between seal and piston rod, be provided with the 3rd permanent-magnetic clamp, Si Te envelope, the 2nd O RunddichtringO and skeleton envelope, the 3rd permanent-magnetic clamp, Si Te envelope, the 2nd O RunddichtringO and skeleton envelope are all embedded in seal, realized multi-stage sealed, and the 3rd permanent-magnetic clamp can make the gap location between piston rod and seal have magnetic field, when magnetic flow liquid flows into the gap location between piston rod and seal, under the effect in magnetic field, magnetic flow liquid partly solidifies state because the variation of its viscosity becomes, and its viscosity increases with the increase of magnetic intensity, thereby magnetic flow liquid is difficult for leaking from motive sealing, further improved sealing effect.Therefore, the utility model uses the variation of magnetic flow liquid viscosity to reach good motive sealing effect, has realized the selfsealings of MR damper, and sealing effect is desirable.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment's MR damper;
Fig. 2 is the connection diagram of seal and piston rod in embodiment;
Fig. 3 is the sectional view of seal in embodiment;
Fig. 4 is the structural representation of the 3rd permanent-magnetic clamp in embodiment;
Fig. 5 is the structural representation of a slice arcuation permanent magnetic tile in embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in the figure, a kind of self-sealed MR damper, comprise cylinder body 1, in cylinder body 1, be provided with the piston 2 and the piston rod 3 that by locating stud 19, are fixedly connected with, the two ends of cylinder body 1 are respectively arranged with front cover 11 and rear end cover 12, piston rod 3 is through front cover 11, between front cover 11 and piston rod 3, be provided with H839 type dust-proof seal ring 39, one end that piston rod 3 is positioned at cylinder body 1 is provided with guide pipe 13, on guide pipe 13, be provided with the pilot hole 14 for piston rod 3 turnover, the other end of piston rod 3 is provided with piston for jack panel 15 through front cover 11 and this end end, piston is provided with two journal stirrups 41 for one end of jack panel 15, on rear end cover 12, be provided with single journal stirrup 42, piston 2 coaxial sleeves are located on piston rod 3, on the outer surface of piston 2, along it, be circumferentially provided with first ring connected in star 31 and the second annular groove 32, in first ring connected in star 31, be provided with the first field coil 33 and the first permanent-magnetic clamp 34, the first field coil 33 is wrapped in the outside of the first permanent-magnetic clamp 34, in the second annular groove 32, be provided with the second field coil 35 and the second permanent-magnetic clamp 36, the second field coil 35 is wrapped in the outside of the second permanent-magnetic clamp 36, the first permanent-magnetic clamp 34 is relative with the polarity of the second permanent-magnetic clamp 36, the first field coil 33 and the anti-phase series connection of the second field coil 35, on piston rod 3, be provided with axial lead hole 37, the entrance 43 of wire 38 from two journal stirrups 41 enters, through the outlet 44 of axial lead hole 37 from piston rod 3, pass and be connected with the second field coil 35 with the first field coil 33, in axial lead hole 37, be full of sealer 45, between the two ends of piston rod 3 and cylinder body 1, be provided with seal 5, in cylinder body 1 between the seal 5 at these piston rod 3 two ends, be full of magnetic flow liquid 6, magnetic flow liquid 6 injects by the liquid filling hole 16 on cylinder body 1, liquid filling hole 16 places are provided with bolt 17 and seal washer 18, between seal 5 and cylinder body 1, be provided with an O RunddichtringO 51, between seal 5 and piston rod 3, be provided with the 3rd permanent-magnetic clamp 52, Si Te envelope 53, the 2nd O RunddichtringO 54 and skeleton envelope 55, the 3rd permanent-magnetic clamp 52, Si Te envelope 53, the 2nd O RunddichtringO 54 and skeleton envelope 55 are all embedded in seal 5, the 3rd permanent-magnetic clamp 52 is comprised of three arcuation permanent magnetic tiles 521 of decile.
In above embodiment, the 3rd permanent-magnetic clamp 52, this special envelope the 53, the 2nd O RunddichtringO 54 and skeleton envelope 55 have realized multi-stage sealed to magnetic flow liquid 6, and the 3rd permanent-magnetic clamp 52 can make the gap location 7 between piston rod 3 and seal 5 have magnetic field, when magnetic flow liquid 6 flows into the gap location 7 between piston rods 3 and seal 5, under the effect in magnetic field, magnetic flow liquid 6 partly solidifies state because the variation of its viscosity becomes, and its viscosity increases with the increase of magnetic intensity, thereby magnetic flow liquid 6 is difficult for leaking from motive sealing, has further improved sealing effect.
Claims (5)
1. a self-sealed MR damper, comprise cylinder body, in described cylinder body, be provided with piston and piston rod, described piston coaxial is set on described piston rod, on the outer surface of described piston, along it, be circumferentially provided with first ring connected in star and the second annular groove, in described first ring connected in star, be provided with the first field coil and the first permanent-magnetic clamp, the first described field coil is wrapped in the outside of the first described permanent-magnetic clamp, in the second described annular groove, be provided with the second field coil and the second permanent-magnetic clamp, the second described field coil is wrapped in the outside of the second described permanent-magnetic clamp, the first described permanent-magnetic clamp is relative with the polarity of the second described permanent-magnetic clamp, the first described field coil and the described anti-phase series connection of the second field coil, between the two ends of described piston rod and described cylinder body, be provided with seal, between seal described in it is characterized in that and described cylinder body, be provided with an O RunddichtringO, between described seal and described piston rod, be provided with the 3rd permanent-magnetic clamp, Si Te envelope, the 2nd O RunddichtringO and skeleton envelope, the 3rd described permanent-magnetic clamp, this described special envelope, the 2nd described O RunddichtringO and described skeleton envelope are all embedded in described seal.
2. a kind of self-sealed MR damper according to claim 1, is characterized in that the 3rd described permanent-magnetic clamp is comprised of multi-disc arcuation permanent magnetic tile.
3. a kind of self-sealed MR damper according to claim 2, is characterized in that the 3rd described permanent-magnetic clamp is comprised of three arcuation permanent magnetic tiles of filling the span of a man's arms on described piston rod.
4. according to a kind of self-sealed MR damper described in claim 1 or 2 or 3, the two ends that it is characterized in that described cylinder body are respectively arranged with front cover and rear end cover, described piston rod, through described front cover, is provided with H839 type dust-proof seal ring between described front cover and described piston rod.
5. according to a kind of self-sealed MR damper described in claim 1 or 2 or 3, it is characterized in that described piston is fixedly connected with by locating stud with described piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569952.6U CN203516580U (en) | 2013-09-13 | 2013-09-13 | Self-sealing magnetorheological damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569952.6U CN203516580U (en) | 2013-09-13 | 2013-09-13 | Self-sealing magnetorheological damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516580U true CN203516580U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320569952.6U Expired - Lifetime CN203516580U (en) | 2013-09-13 | 2013-09-13 | Self-sealing magnetorheological damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516580U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595407A (en) * | 2015-01-09 | 2015-05-06 | 宁波大学 | Magneto-rheological shock absorber |
| CN105065559A (en) * | 2015-07-22 | 2015-11-18 | 石家庄铁道大学 | Parallel-connection multi-channel magnetorheological damper |
| CN108036014A (en) * | 2017-12-21 | 2018-05-15 | 四川建筑职业技术学院 | A kind of MR damper sealing piston equipped with spiral damping passage |
| CN112343958A (en) * | 2020-11-03 | 2021-02-09 | 重庆大学 | Low-current large-damping-force magnetorheological damping device |
-
2013
- 2013-09-13 CN CN201320569952.6U patent/CN203516580U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595407A (en) * | 2015-01-09 | 2015-05-06 | 宁波大学 | Magneto-rheological shock absorber |
| CN105065559A (en) * | 2015-07-22 | 2015-11-18 | 石家庄铁道大学 | Parallel-connection multi-channel magnetorheological damper |
| CN105065559B (en) * | 2015-07-22 | 2016-06-08 | 石家庄铁道大学 | Parallel channel MR damper |
| CN108036014A (en) * | 2017-12-21 | 2018-05-15 | 四川建筑职业技术学院 | A kind of MR damper sealing piston equipped with spiral damping passage |
| CN112343958A (en) * | 2020-11-03 | 2021-02-09 | 重庆大学 | Low-current large-damping-force magnetorheological damping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |