CN201875043U - Slide-valve-type magnetorheological shock absorber - Google Patents
Slide-valve-type magnetorheological shock absorber Download PDFInfo
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- CN201875043U CN201875043U CN2010206455807U CN201020645580U CN201875043U CN 201875043 U CN201875043 U CN 201875043U CN 2010206455807 U CN2010206455807 U CN 2010206455807U CN 201020645580 U CN201020645580 U CN 201020645580U CN 201875043 U CN201875043 U CN 201875043U
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Abstract
The utility model provides a slide-valve-type magnetorheological shock absorber, which comprises a working cylinder tube, a screen plate, an overlap compensation air bag and a slide valve assembly. The slide valve assembly comprises a piston rod, a piston head and a piston bush. A blind slot and a through slot are uniformly distributed on the outer cylindrical surface of the piston bush at interval, and the through slot and the inner wall of the working cylinder tube form a normally-through damp channel. Axial through holes which are uniformly distributed on the upper end face of the inner cavity of the piston bush, radial through holes which are uniformly distributed and correspond to the position of the blind slot, the upper end face of the piston head and the upper cavity of the working cylinder together form a damp channel with variable state. During the compression stroke, the variable damp channel is opened, and now the shock absorber can have two damp channels; during the recovery stroke, the variable damp channel is closed, and now the shock absorber can have one damp channel; and whether exciting current is loaded or not, the shock absorber can provide reliable damping force. The slide-valve-type magnetorheological shock absorber disclosed by the utility model is simple in structure and is wide in application range, the required damping force during normal operation or power supply interruption can be provided, and the recovery idle stroke can be effectively inhibited.
Description
Technical field
The utility model belongs to the vibration damping equipment field of automobile semi-active type suspension, is specifically related to a kind of sliding valve style magneto-rheological vibration damper.
Background technique
Suspension system is one of important component part of automobile, its effect is shear force and the moment of transmitting between wheel and the vehicle frame, and relax the impulsive load of being passed to vehicle frame, vehicle body by uneven road surface, the vibration of the bearing system that decay causes thus is to guarantee that the smooth-going of automobile travels.Whether along with the variation of driving conditions changes, suspension can be divided into passive suspension, semi-active suspension and Active suspension according to the damping of suspension and rigidity.Semi-active suspension is meant the suspension that one of suspension elastic element rigidity and absorber damping force or both all can regulate as required.Because semi-active suspension approaches Active suspension on controlling performance, and simple in structure, energy loss is little, and cost is low, thereby has huge development potentiality.
Magnetic flow liquid is a kind of intellectual material of of many uses, function admirable, is by high magnetic permeability, the small soft magnetic particles of low magnetic hysteresis and the suspension that non-magnetic liquid mixes.Magnetic flow liquid has low viscous characteristics under zero magnetic field condition, and under strong magnetic field action, then presents the characteristic of high viscosity, lazy flow.The rheology of magnetic flow liquid under the action of a magnetic field is moment, reversible, and the shear yield strength after its rheology and magnetic intensity have stable corresponding relation.
Magneto-rheological vibration damping is a kind of novel semi-active suspension technology of utilizing magnetic rheology effect, have damping continuously, fast, the characteristics of step-less adjustment.At present, known magneto-rheological vibration damper is to be made of cylinder barrel body, piston, piston rod, field coil.The problem that existing magneto-rheological vibration damper exists is:
1. adopt the magneto-rheological vibration damper of single piston, its piston structure is too simple, causes the damping change value less, causes application area limited; Adopt the magneto-rheological vibration damper of composite piston, its valve is more, and structure is too complicated, causes reliability to reduce and the cost rising.As the magneto-rheological vibration damper interruption of power supply, then can not produce magnetic rheology effect, cause damping force obviously to descend, influence effectiveness in vibration suppression.
2. the monotubular formula magneto-rheological vibration damper that has air bag, effect is not ideal enough aspect the idle stroke that suppresses to restore in the stroke.
Summary of the invention
The utility model provides a kind of sliding valve style magneto-rheological vibration damper, can provide required damping force in proper functioning or interruption of power supply, and can suppress to restore idle running effectively.
Sliding valve style magneto-rheological vibration damper of the present utility model, be characterized in that described vibration damper contains lead, dirt-proof boot, dust-proof cover, pilot seal circle, buffer stopper, work cylinder barrel, limiting stopper, oil sealing, field coil, magnetic conducting plate, sieve plate, twin drum type compensation air bag and sliding valve style assembly; Wherein, the sliding valve style assembly comprises piston rod, piston sleeve and piston head.The shell of work cylinder barrel is provided with dirt-proof boot and dust-proof cover; Clutch release slave cylinder tube inner chamber top is disposed with pilot seal circle and buffer stopper; The clutch release slave cylinder tube inner chamber is provided with piston sleeve, and the piston sleeve upper-end surface is disposed with limiting stopper and oil sealing; Clutch release slave cylinder tube inner chamber bottom is provided with sieve plate and twin drum type compensation air bag, and sieve plate places twin drum type compensation air bag top; Clutch release slave cylinder tube inner chamber bottom is set to taper shape.Piston head places the inner chamber of piston sleeve, and field coil is wrapped on the external cylindrical surface of piston head, and magnetic conducting plate is wrapped in outside the field coil.Piston rod is fixedlyed connected with piston head after passing dirt-proof boot, pilot seal circle, buffer stopper, limiting stopper, oil sealing successively; The hollow hole that lead passes piston rod is connected with field coil, constitutes magnetic circuit.In the work cylinder barrel, be full of magnetic flow liquid is arranged.The clutch release slave cylinder tube inner chamber is divided into clutch release slave cylinder epicoele and clutch release slave cylinder cavity of resorption by the sliding valve style assembly that is made of piston rod, piston head, piston sleeve; Piston head upper-end surface and piston sleeve inner chamber constitute the variable damp channel of state; Piston sleeve outer wall and clutch release slave cylinder tube inner chamber wall constitute the damp channel that is communicated with clutch release slave cylinder epicoele and clutch release slave cylinder cavity of resorption of normal open.The center of described dirt-proof boot, buffer stopper, limiting stopper, piston sleeve, piston head is a concentric.
Described piston sleeve external cylindrical surface is provided with groove and blind groove uniformly at intervals.Be provided with uniform radial direction through hole at piston sleeve internal chamber wall upside, the corresponding connection of blind groove of radial direction through hole and piston sleeve external cylindrical surface.Piston sleeve inner chamber upper-end surface also is provided with uniform axial hole.
The axial length of described piston sleeve inner chamber is greater than the axial length of piston head; The difference of piston sleeve inner chamber axial length and piston head axial length is greater than the diameter of the uniform radial direction through hole of piston sleeve internal chamber wall upside.
Described sieve plate is provided with uniform axial hole.
Described twin drum type compensation air bag is a totally enclosed type, is filled with high-pressure inert gas, and it is hemispherical that the bottom is.
Sliding valve style magneto-rheological vibration damper of the present utility model, when being in compression stroke, piston head moves down into piston sleeve intracavity bottom end face, make uniform axial hole, the damp channel that forms between the cylinder barrel of working in inner chamber upper-end surface of the uniform radial direction through hole of piston sleeve internal chamber wall upside, piston sleeve open, sieve plate moves down simultaneously, the compression of twin drum type complemental air capsule volume.When being in the recovery stroke, move on to piston sleeve inner chamber top end face on the piston head, make uniform axial hole, the damp channel that forms between the cylinder barrel of working in inner chamber upper-end surface of the uniform radial direction through hole of piston sleeve internal chamber wall upside, piston sleeve close, twin drum type complemental air capsule volume is restored simultaneously, promotes to move on the sieve plate.Piston sleeve outer wall and the normal open damp channel that the work inner wall of cylinder forms provide basic damping force.
The beneficial effects of the utility model are:
1, vibration damper has two damp channels when compression stroke, has a damp channel when restoring stroke.When loading or not loading field current, vibration damper all has certain damping force, particularly can both provide to satisfy the less relatively compression damping power of vibration damping requirement and relatively large recovery damping force, has guaranteed effectiveness in vibration suppression.
2, sieve plate and twin drum type compensation air bag has played buffer function when compression stroke.Twin drum type compensation air bag promotes to move on the sieve plate in restoring stroke, and the area of contact extruding magnetic flow liquid that sieve plate is bigger plays the volume compensation effect, is convenient to suppress idle stroke.
3, the bottom hemisphere of twin drum type compensation air bag places the conical lower section of work cylinder barrel, is convenient to protect air bag, prevents overvoltage, helps prolonging the life-span of air bag.
4, by a plurality of uniform through holes, blind groove, groove are set, make vibration damper obtain required damping force, reduced cost, simplify the structure.
5, vibration damper adopts monotubular formula structural type, has dwindled the vibration damper volume.
Description of drawings
Fig. 1 is an example structure schematic representation of the present utility model.
Fig. 2 (a) is the piston head structural representation among the utility model embodiment.
Fig. 2 (b) is the piston head sectional view among the utility model embodiment.
Fig. 3 (a) is the piston sleeve structural representation among the utility model embodiment.
Fig. 3 (b) is the piston sleeve sectional view among the utility model embodiment.
Fig. 4 is the sliding valve style modular construction schematic representation among the utility model embodiment.
Fig. 5 (a) is the sieve-plate structure schematic representation among the utility model embodiment.
Fig. 5 (b) is the sieve plate sectional view among the utility model embodiment.
Among the figure: 1. lead 2. piston rods 3. dirt-proof boots 4. dust-proof cover 5. pilot seal circles 6. buffer stoppers 7. work cylinder barrels 8. limiting stoppers 9. oil sealings 10. piston sleeves 11. piston heads 12. field coils 13. magnetic conducting plates 14. sieve plates 15. twin drum types compensation air bag 16. clutch release slave cylinder epicoeles 17. clutch release slave cylinder cavity of resorptions 18. are installed suspension ring 19. magnetic flow liquids.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Embodiment
Fig. 1 is an example structure schematic representation of the present utility model.
Sliding valve style magneto-rheological vibration damper of the present utility model contains lead 1, dirt-proof boot 3, dust-proof cover 4, pilot seal circle 5, buffer stopper 6, work cylinder barrel 7, limiting stopper 8, oil sealing 9, field coil 12, magnetic conducting plate 13, sieve plate 14, twin drum type compensation air bag 15 and sliding valve style assembly.Wherein, the sliding valve style assembly comprises piston rod 2, piston sleeve 10 and piston head 11.Its annexation is that the shell of work cylinder barrel 7 is provided with dirt-proof boot 3 and dust-proof cover 4; Top of chamber is disposed with pilot seal circle 5 and buffer stopper 6 in the work cylinder barrel 7; Work cylinder barrel 7 inner chambers are provided with piston sleeve 10, and piston sleeve 10 upper-end surfaces are disposed with limiting stopper 8 and oil sealing 9; Work cylinder barrel 7 intracavity bottoms are provided with sieve plate 14 and twin drum type compensation air bag 15, and sieve plate 14 places twin drum type compensation air bag 15 tops; Work cylinder barrel 7 intracavity bottoms are set to taper shape.Piston head 11 places the inner chamber of piston sleeve 10, and field coil 12 is wrapped on the external cylindrical surface of piston head 11, and magnetic conducting plate 13 is wrapped in outside the field coil 12; Piston rod 2 is fixedlyed connected with piston head 11 after passing dirt-proof boot 3, pilot seal circle 5, buffer stopper 6, limiting stopper 8, oil sealing 9 successively; The hollow hole that lead 1 passes piston rod 2 is connected with field coil 12, constitutes magnetic circuit.In work cylinder barrel 7, be full of magnetic flow liquid 19 is arranged.Work cylinder barrel 7 inner chambers are divided into clutch release slave cylinder epicoele 16 and clutch release slave cylinder cavity of resorption 17 by the sliding valve style assembly that is made of piston rod 2, piston head 11, piston sleeve 10; Piston head 11 upper-end surfaces and piston sleeve 10 inner chambers constitute the variable damp channel of state.Piston sleeve 10 outer walls and work cylinder barrel 7 internal chamber walls constitute the damp channel that is communicated with clutch release slave cylinder epicoele 16 and clutch release slave cylinder cavity of resorption 17 of normal open.On clutch release slave cylinder 7 bottom enclosure, also be provided with suspension ring 18 are installed.The center of described dirt-proof boot 3, buffer stopper 6, limiting stopper 8, piston sleeve 10, piston head 11 is a concentric.
Described piston sleeve 10 external cylindrical surfaces are provided with groove and blind groove uniformly at intervals; Be provided with uniform radial direction through hole at piston sleeve 10 internal chamber wall upsides, the corresponding connection of blind groove of radial direction through hole and piston sleeve 10 external cylindrical surfaces; Piston sleeve 10 inner chamber upper-end surfaces also are provided with uniform axial hole.
The axial length of described piston sleeve 10 inner chambers is greater than the axial length of piston head 11; The difference of piston sleeve 10 inner chamber axial lengths and piston head 11 axial lengths is greater than the diameter of the uniform radial direction through hole of piston sleeve 10 internal chamber wall upsides.
Piston head 11 upper-end surfaces and piston sleeve 10 inner chambers form the variable damp channel of state; Piston sleeve 10 outer walls and work cylinder barrel 7 internal chamber walls form the damp channel of normal open, are communicated with clutch release slave cylinder epicoele 16 and clutch release slave cylinder cavity of resorption 17.Sieve plate 14 is provided with uniform axial hole, is installed in twin drum type compensation air bag 15 tops, and mutual group becomes the volume compensation device.Twin drum type compensation air bag 15 is a totally enclosed type, is filled with high-pressure inert gas, and it is hemispherical that the bottom is.Work cylinder barrel 7 intracavity bottoms are set to taper shape, are convenient to air bag compression and resilience, help protecting air bag, prevent overvoltage.
Fig. 2 (a) is the piston head structural representation among the utility model embodiment, and Fig. 2 (b) is the piston head sectional view.Piston head 11 inner chambers are used for inserting piston rod 2 and fixing.Two step cutting pattern faces of piston head 11 are evenly equipped with a plurality of grooves, are used for filling magnetic flow liquid 19, increase the damp channel of piston head 11 outsides.Piston head 11 external cylindrical surfaces are used to twine field coil 12.
Fig. 3 (a) is the piston sleeve structural representation among the utility model embodiment, and Fig. 3 (b) is the piston sleeve sectional view.The oil sealing 9 that is provided with on the piston sleeve 10 is used for the sealing and the guiding of piston rod 2.Piston sleeve 10 external cylindrical surfaces have a plurality of blind grooves and groove uniformly at intervals, and groove is used for filling magnetic flow liquid 19, realize providing fixing damp channel.One section of the close oil sealing 9 of the internal chamber wall of piston sleeve 10 is evenly equipped with a plurality of radial direction through hole, the corresponding connection of blind groove with piston sleeve 10 external cylindrical surfaces, oil sealing 9 end faces of living in are evenly equipped with a plurality of axial holes, and blind groove, radial direction through hole, axial hole constitute a damp channel jointly.
Fig. 4 is the sliding valve style modular construction schematic representation among the utility model embodiment.Be Spielpassung between piston head 11 and the piston sleeve 10.The center line that piston head 11 does not have the circular arc step surface of groove overlaps with the blind groove center line of piston sleeve 10 outer walls.
Fig. 5 (a) is the sieve-plate structure schematic representation among the utility model embodiment, and Fig. 5 (b) is the sieve plate sectional view.Be evenly equipped with a plurality of axial holes along sieve plate 14 edges, making magnetic flow liquid can charge into work cylinder barrel 7 bottoms.Sieve plate 14 has bigger area of contact except that the zone, edge, good cushion effect is provided in the vibration damper compression stroke, provides bigger recuperability in restoring stroke.
The working procedure of the utility model sliding valve style magneto-rheological vibration damper is, when being in compression stroke, piston head 11 moves down into piston sleeve 10 intracavity bottom end faces, makes the radial direction through hole of piston sleeve 10 internal chamber walls, the axial hole of end face, the damp channel that forms between the cylinder barrel 7 of working open.When being in the recovery stroke, move on to piston sleeve 10 inner chamber top end faces on the piston head 11, make the radial direction through hole of piston sleeve 10 internal chamber walls, the axial hole of end face, the damp channel that forms between the cylinder barrel 7 of working close, this damp channel state is to change between opening and closing with the different of operating mode with respect to piston sleeve 10 outer walls with the normal open damp channel that work cylinder barrel 7 inwalls form, and helps to realize the vibration damping requirement.
Claims (5)
1. sliding valve style magneto-rheological vibration damper, it is characterized in that described vibration damper contains lead (1), dirt-proof boot (3), dust-proof cover (4), pilot seal circle (5), buffer stopper (6), work cylinder barrel (7), limiting stopper (8), oil sealing (9), field coil (12), magnetic conducting plate (13), sieve plate (14), twin drum type compensation air bag (15) and sliding valve style assembly; Wherein, the sliding valve style assembly comprises piston rod (2), piston sleeve (10) and piston head (11); Its annexation is that the shell of work cylinder barrel (7) is provided with dirt-proof boot (3) and dust-proof cover (4); The interior top of chamber of work cylinder barrel (7) is disposed with pilot seal circle (5) and buffer stopper (6); Work cylinder barrel (7) inner chamber is provided with piston sleeve (10), and piston sleeve (10) upper-end surface is disposed with limiting stopper (8) and oil sealing (9); Work cylinder barrel (7) intracavity bottom is provided with sieve plate (14) and twin drum type compensation air bag (15), and sieve plate (14) places twin drum type compensation air bag (15) top; Work cylinder barrel (7) intracavity bottom is set to taper shape; Piston head (11) places the inner chamber of piston sleeve (10), and field coil (12) is wrapped on the external cylindrical surface of piston head (11), and magnetic conducting plate (13) is wrapped in outside the field coil (12); Piston rod (2) is fixedlyed connected with piston head (11) after passing dirt-proof boot (3), pilot seal circle (5), buffer stopper (6), limiting stopper (8), oil sealing (9) successively; The hollow hole that lead (1) passes piston rod (2) is connected with field coil (12), constitutes magnetic circuit; In work cylinder barrel (7), be full of and magnetic flow liquid arranged (19); Work cylinder barrel (7) inner chamber is divided into clutch release slave cylinder epicoele (16) and clutch release slave cylinder cavity of resorption (17) by the sliding valve style assembly that is made of piston rod (2), piston head (11), piston sleeve (10); Piston head (11) upper-end surface and piston sleeve (10) inner chamber constitute the variable damp channel of state; Piston sleeve (10) outer wall and work cylinder barrel (7) internal chamber wall constitute the damp channel that is communicated with clutch release slave cylinder epicoele (16) and clutch release slave cylinder cavity of resorption (17) of normal open; The center of described dirt-proof boot (3), buffer stopper (6), limiting stopper (8), piston sleeve (10), piston head (11) is a concentric.
2. sliding valve style magneto-rheological vibration damper according to claim 1 is characterized in that, the external cylindrical surface of described piston sleeve (10) is provided with groove and blind groove uniformly at intervals; Be provided with uniform radial direction through hole at piston sleeve (10) internal chamber wall upside, the corresponding connection of blind groove of radial direction through hole and piston sleeve (10) external cylindrical surface; Piston sleeve (10) inner chamber upper-end surface also is provided with uniform axial hole.
3. sliding valve style magneto-rheological vibration damper according to claim 1 is characterized in that, the axial length of described piston sleeve (10) inner chamber is greater than the axial length of piston head (11); The difference of piston sleeve (10) inner chamber axial length and piston head (11) axial length is greater than the diameter of the uniform radial direction through hole of piston sleeve (10) internal chamber wall upside.
4. sliding valve style magneto-rheological vibration damper according to claim 1 is characterized in that, described sieve plate (14) is provided with uniform axial hole.
5. sliding valve style magneto-rheological vibration damper according to claim 1 is characterized in that, described twin drum type compensation air bag (15) is a totally enclosed type, is filled with high-pressure inert gas, and it is hemispherical that the bottom is.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206455807U CN201875043U (en) | 2010-12-07 | 2010-12-07 | Slide-valve-type magnetorheological shock absorber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206455807U CN201875043U (en) | 2010-12-07 | 2010-12-07 | Slide-valve-type magnetorheological shock absorber |
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| CN201875043U true CN201875043U (en) | 2011-06-22 |
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| CN2010206455807U Expired - Fee Related CN201875043U (en) | 2010-12-07 | 2010-12-07 | Slide-valve-type magnetorheological shock absorber |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619925A (en) * | 2012-04-23 | 2012-08-01 | 江苏大学 | Variable damping magnetic spring |
| CN104613125A (en) * | 2015-02-05 | 2015-05-13 | 成都北方石油勘探开发技术有限公司 | Drilling magneto-rheological shock absorption device |
| CN105065528A (en) * | 2015-07-19 | 2015-11-18 | 常州大学 | Single-pole multi-grade piston adaptive magneto-rheological damper |
| CN105240451A (en) * | 2015-10-23 | 2016-01-13 | 中国船舶重工集团公司第七○二研究所 | Active and passive integrated type vibration isolator and vibration isolating method |
| CN106641071A (en) * | 2016-12-20 | 2017-05-10 | 上海工程技术大学 | Magnetorheological fluid inflatable vibration reducer |
| CN106678257A (en) * | 2017-01-24 | 2017-05-17 | 东南大学 | Volume compensation isolation type single rod magneto-rheological damper |
| CN108087481A (en) * | 2018-01-17 | 2018-05-29 | 湖北汽车工业学院 | The MR fluid shock absorber that recovery damping force and compression damping power independently continuously regulate and control |
| CN108412940A (en) * | 2018-03-23 | 2018-08-17 | 合肥工业大学 | A kind of Kind of MR Hydraulic Actuator damping stepless adjustable damper |
| CN109713465A (en) * | 2018-11-22 | 2019-05-03 | 武汉新能源汽车工业技术研究院有限公司 | A kind of device and method for connecting and drawing for magneto-rheological vibration damper inner lead |
| CN111750021A (en) * | 2019-03-28 | 2020-10-09 | 蒂森克虏伯股份公司 | Shock absorber and motor vehicle |
| CN112161017A (en) * | 2020-09-22 | 2021-01-01 | 汕头大学 | Quick response magneto-rheological damper |
| CN114321552A (en) * | 2022-01-04 | 2022-04-12 | 中国海洋大学 | Magnetorheological energy accumulator for water hammer protection and installation method and control system thereof |
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2010
- 2010-12-07 CN CN2010206455807U patent/CN201875043U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619925A (en) * | 2012-04-23 | 2012-08-01 | 江苏大学 | Variable damping magnetic spring |
| CN102619925B (en) * | 2012-04-23 | 2014-04-09 | 江苏大学 | Variable damping magnetic spring |
| CN104613125A (en) * | 2015-02-05 | 2015-05-13 | 成都北方石油勘探开发技术有限公司 | Drilling magneto-rheological shock absorption device |
| CN105065528A (en) * | 2015-07-19 | 2015-11-18 | 常州大学 | Single-pole multi-grade piston adaptive magneto-rheological damper |
| CN105240451A (en) * | 2015-10-23 | 2016-01-13 | 中国船舶重工集团公司第七○二研究所 | Active and passive integrated type vibration isolator and vibration isolating method |
| CN106641071A (en) * | 2016-12-20 | 2017-05-10 | 上海工程技术大学 | Magnetorheological fluid inflatable vibration reducer |
| CN106678257B (en) * | 2017-01-24 | 2018-07-06 | 东南大学 | A kind of volume compensation is isolated singly to go out pole magnetorheological damper |
| CN106678257A (en) * | 2017-01-24 | 2017-05-17 | 东南大学 | Volume compensation isolation type single rod magneto-rheological damper |
| CN108087481A (en) * | 2018-01-17 | 2018-05-29 | 湖北汽车工业学院 | The MR fluid shock absorber that recovery damping force and compression damping power independently continuously regulate and control |
| CN108087481B (en) * | 2018-01-17 | 2023-06-16 | 湖北汽车工业学院 | Magnetorheological fluid shock absorber with independently and continuously regulated restoring damping force and compressing damping force |
| CN108412940A (en) * | 2018-03-23 | 2018-08-17 | 合肥工业大学 | A kind of Kind of MR Hydraulic Actuator damping stepless adjustable damper |
| CN109713465A (en) * | 2018-11-22 | 2019-05-03 | 武汉新能源汽车工业技术研究院有限公司 | A kind of device and method for connecting and drawing for magneto-rheological vibration damper inner lead |
| CN111750021A (en) * | 2019-03-28 | 2020-10-09 | 蒂森克虏伯股份公司 | Shock absorber and motor vehicle |
| CN112161017A (en) * | 2020-09-22 | 2021-01-01 | 汕头大学 | Quick response magneto-rheological damper |
| CN112161017B (en) * | 2020-09-22 | 2022-08-16 | 汕头大学 | Quick response magneto-rheological damper |
| CN114321552A (en) * | 2022-01-04 | 2022-04-12 | 中国海洋大学 | Magnetorheological energy accumulator for water hammer protection and installation method and control system thereof |
| CN114321552B (en) * | 2022-01-04 | 2023-02-10 | 中国海洋大学 | Magnetorheological energy accumulator for water hammer protection and installation method and control system thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SICHUAN JIUXIN TECHNOLOGY GROUP CO., LTD. Free format text: FORMER NAME: SICHUAN CAEP-TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 919 box 826, box 621900, Mianyang City, Sichuan Province Patentee after: Sichuan Jiuxin Technologies Group Co.,Ltd. Address before: 919 box 826, box 621900, Mianyang City, Sichuan Province Patentee before: Sichuan CAEP-TECH Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20141207 |
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| EXPY | Termination of patent right or utility model |