CN205315604U - Built -in magnetic current becomes magnetic current change attenuator that valve carries out control of damping performance - Google Patents
Built -in magnetic current becomes magnetic current change attenuator that valve carries out control of damping performance Download PDFInfo
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- CN205315604U CN205315604U CN201620003821.5U CN201620003821U CN205315604U CN 205315604 U CN205315604 U CN 205315604U CN 201620003821 U CN201620003821 U CN 201620003821U CN 205315604 U CN205315604 U CN 205315604U
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Abstract
The utility model discloses a built -in magnetic current becomes magnetic current change attenuator that valve carries out control of damping performance mainly comprises piston rod, piston cylinder, attenuator cylinder body, case, floating piston, end cover and lug etc.. Piston cylinder, attenuator cylinder body, case, excitation coil and cylinder body flow channel and U type flow channel constitute built -in magnetic current and become the valve. When excitation coil electrically conducted, the magnetorheological suspensions in cylinder body flow channel and the U type flow channel effective damping clearance made the piston head right -hand member damping force that the face receives change because galvanomagnetic effect results in mobile the reduction, and magnetorheological suspensions holds chamber I and magnetorheological suspensions appearance chamber can form the pressure differential between II, realized that magnetic current change valve control magnetic current becomes the purpose of attenuator damping performance. U type flow channel has effectively increased damping length to the damping force adjustable range has been increased. This magneto rheological damper damping force control range is big, compact structure, small, dampings such as specially adapted railway, locomotive, bridge antidetonation system.
Description
Technical field
The utility model relates to a kind of MR damper, relates in particular to the MR damper that a kind of built-in magnetorheological valve carries out damping capacity control.
Background technology
MR damper is a kind of novel intelligent damping device being widely used in half active control system. The feature of its Millisecond response speed, large control range and large damping force output, makes it become half outstanding active actuators part of industrial application. At present MR damper is obtained extensive use at aspects such as the vibration dampings of vibration damping antidetonation system, rail vehicles and the automobile suspension system of building and bridge.
MR damper is mainly used to the vibration that control system device produces, and meets various kinds of equipment to the instructions for use under different operating modes and varying environment. Therefore the performance of MR damper directly has influence on quiet, dynamic characteristic and the functional reliability of various systems, is the core cell in vibration insulating system.
Conventional MR damper is generally made up of piston, piston rod, cylinder body and the magnet exciting coil that is wrapped in piston winding slot. When work, by apply a certain size electric current to excitation coil, produce magnetic field make the to flow through yield strength of the magnetic flow liquid in fluid course and change, thereby dynamically change output damping force.
Existing MR damper great majority adopt circular ring type liquid flowing channel structure, and liquid flowing resistance passage is mainly arranged between coil inside or coil and sleeve, and the piston of winding around is generally fixedly connected with piston rod. The appearance and size of this class damper is all larger, and damping force adjustable extent is also narrow.
When MR damper structural design, first should make the flow direction of magnetic flow liquid in effective damping gap mutually vertical with magnetic direction; Next is to make as far as possible magnetic flow liquid lengthen at the fluid course of MR damper inside. What at present designed MR damper adopted mostly is the circular ring type liquid flow damping passage of single magnet exciting coil, and is the damping force adjustable extent that improves MR damper by following two kinds of methods. The one, under identical input current, in magnetic flow liquid saturation range, improve as far as possible the magnetic induction intensity in effective damping gap. Conventional method is the damping clearance width that reduces MR damper, but because magnetic flow liquid is long placed in not when again enabling, thereby easily occur that solids precipitation stops up damping clearance, cause MR damper to lose efficacy. Second is exactly to improve effective damping gap length, but can significantly increase like this volume of MR damper, takies more installation and usage space, and manufacturing cost is corresponding increase also.
Based on this, in actual design process, want to increase magnetic induction intensity in effective damping gap simultaneously and improve the Length Ratio in effective damping gap more difficult. Therefore, design the MR damper of a kind of stable performance and structure relative compact, make the damping force of MR damper output larger, damping force control range is wider, is the problem that the industry is needed solution badly, is also the prerequisite of further widening MR damper commercial Application.
Summary of the invention
In order to overcome the problem existing in background technology and to meet MR damper actual operation requirements, the utility model proposes the MR damper that a kind of built-in magnetorheological valve carries out damping capacity control. Piston cylinder, damper cylinder body, spool, magnet exciting coil and cylinder body fluid course and the U-shaped fluid course of this MR damper form built-in MR valve, and the fluid course of this built-in MR valve is made up of jointly cylinder body fluid course and U-shaped fluid course. In the time switching on to magnet exciting coil, in cylinder body fluid course and U-shaped fluid course effective damping gap, a certain size magnetic field will be produced, flow through effective damping gap magnetic flow liquid viscosity increase, yield stress strengthens, thereby mineralization pressure is poor between magnetic flow liquid cavity volume I and magnetic flow liquid cavity volume II, apply size of current and can realize effective control of damping force by control. This structural design has been utilized the trend of the magnetic line of force fully, do not reducing under the prerequisite of damping clearance width, increase effective damping length and the section of shear, ensured that damper can export enough large damping force, can not result in blockage because damping clearance is too narrow simultaneously. In addition, the magnet exciting coil of this MR damper is wrapped on built-in magnetic rheology valve core, has avoided traditional MR damper magnet exciting coil to be wrapped in and on piston head, has caused the deficiency that damping force adjustable extent is little. Adopt the damping force dynamic adjustments scope of this MR damper large, compact conformation and volume little, be specially adapted to railway, automobile, the isostructural vibration damping antidetonation of bridge system.
The utility model solves the technical scheme that its technical problem adopts and comprises: it is characterized in that comprising: left hanger (1), piston rod (2), piston cylinder (3), left end cap (4), screw I (5), magnet exciting coil (6), damper cylinder body (7), floating piston (8), right end cap (9), right hanger (10), screw II (11), compressed air cavity volume (12), magnetic flow liquid cavity volume I (13), cylinder body fluid course (14), spool (15), U-shaped fluid course (16), magnetic flow liquid cavity volume II (17), piston head (18), gas cavity volume I (19) and gas cavity volume II (20), left end and the right-hand member of piston rod (2) are processed with respectively external screw thread, piston rod (2) left end is fixedly connected with by screw thread with left hanger (1), and piston rod (2) right-hand member is fixedly connected with by screw thread with piston head (18), piston rod (2) and piston cylinder (3) matched in clearance, piston rod (2) seals by sealing ring with piston cylinder (3), piston head (18) and piston cylinder (3) matched in clearance, piston head (18) seals by sealing ring with piston cylinder (3), piston cylinder (3) right part outer surface and middle part outer surface are processed with two sections of external screw threads, piston cylinder (3) is fixedly connected with by screw thread with left end cap (4), between piston cylinder (3) and left end cap (4), seals by sealing ring, piston cylinder (3) right part is fixedly connected with by screw thread with damper cylinder body (7), left end cap (4) is fixedly connected with by screw I (5) with damper cylinder body (7), between left end cap (4) and damper cylinder body (7), seals by sealing ring, spool (15) left side is processed with four circular positioning convex, four circular groove interference fits of four circular positioning convex and left end cap (4) right side, spool (15) right side is processed with four circular positioning convex, four circular groove interference fits of four circular positioning convex and damper cylinder body (7) end cap left side, in the middle of spool (15), be processed with toroidal cavity, magnet exciting coil (6) uniform winding is in the groove of spool (15), its lead-in wire is derived by the fairlead in damper cylinder body (7) end cap, can avoid magnetic flow liquid to overflow by fairlead, floating piston (8) and damper cylinder body (7) matched in clearance, floating piston (8) seals by sealing ring with damper cylinder body (7), right end cap (9) is fixedly connected with by screw II (11) with damper cylinder body (7), right end cap (9) seals by sealing ring with damper cylinder body (7), right end cap (9) right-hand member is processed with external screw thread, and right end cap (9) is fixedly connected with by screw thread with right hanger (10), cavity between damper cylinder body (7) and floating piston (8) forms magnetic flow liquid cavity volume I (13), damper cylinder body (7) inner surface middle part forms damper cylinder body (7) end cap, and damper cylinder body (7) end cap is processed with 4 waist through hole grooves that are circumferentially evenly arranged, and forms cylinder body fluid course (14), cavity between damper cylinder body (7) end cap, piston head (18) and piston cylinder (3) forms magnetic flow liquid cavity volume II (17), spool (15) outer surface and damper cylinder body (7) inner surface surround annular fluid course I, spool (15) left side and left end cap (4) right side surround disc fluid course II, spool (15) inner surface and piston cylinder (3) outer surface surround annular fluid course III, the damping clearance width of three sections of fluid courses is 1mm, annular fluid course I, disc fluid course II and annular fluid course III form U-shaped fluid course (16), in magnetic flow liquid cavity volume I (13), magnetic flow liquid cavity volume II (17), U-shaped fluid course (16) and cylinder body fluid course (14), be filled with magnetic flow liquid, magnetic flow liquid cavity volume I (13) and magnetic flow liquid cavity volume II (17) are communicated with by cylinder body fluid course (14) and U-shaped fluid course (16), in the time of piston head (18) side-to-side movement, the magnetic flow liquid in magnetic flow liquid cavity volume I (13) and magnetic flow liquid cavity volume II (17) flows by cylinder body fluid course (14) and U-shaped fluid course (16) left and right, piston cylinder (3), damper cylinder body (7), spool (15), magnet exciting coil (6) and cylinder body fluid course (14) and U-shaped fluid course (16) form the built-in MR valve of MR damper, in the time giving magnet exciting coil (6) energising, due to galvanomagnetic-effect, produce the magnetic field vertical with the mobile direction of magnetic flow liquid at cylinder body fluid course (14) with in U-shaped fluid course (16), the mobile property of magnetic flow liquid in cylinder body fluid course (14) and U-shaped fluid course (16) is reduced, thereby mineralization pressure is poor between magnetic flow liquid cavity volume I (13) and magnetic flow liquid cavity volume II (17), and then make the suffered damping force generation respective change in piston head (18) right side, realize the object of MR valve control Damp Properties of Magnetorheological Damper, in the situation that outside physical dimension does not increase, U-shaped fluid course (16) has effectively increased relaxation length, thereby has increased damping force adjustable extent. cavity between piston rod (2) outer surface, piston cylinder (3) inner surface and piston head (18) left side forms gas cavity volume I (19), cavity between piston rod (2) middle circle connected in star and piston head (18) left side forms gas cavity volume II (20), piston rod (2) right-hand member is processed with 4 manholes that are circumferentially evenly arranged, and when piston rod (2) side-to-side movement, gas cavity volume I (19) and gas cavity volume II (20) are carried out gas compensation by manhole. cavity between floating piston (8), damper cylinder body (7) and right end cap (9) forms compressed air cavity volume (12), in compressed air cavity volume (12), fill Compressed Gas, in the time that piston rod (2) in axial direction moves, can there is respective change in the volume of magnetic flow liquid cavity volume I (13) and magnetic flow liquid cavity volume II (17), now floating piston (8) can float to realize volume compensation by the left and right of axial direction. piston cylinder (3), damper cylinder body (7) and spool (15) are made up of mild steel permeability magnetic material, left hanger (1), piston rod (2), left end cap (4), screw I (5), floating piston (8), right end cap (9), right hanger (10), screw II (11) and piston head (18) are made up of stainless steel non-magnet_conductible material.
The utility model is compared with background technology, and the beneficial effect having is:
(1) piston cylinder of the utility model MR damper, damper cylinder body, spool, magnet exciting coil and cylinder body fluid course and U-shaped fluid course form built-in MR valve, and the fluid course of this built-in MR valve is made up of jointly cylinder body fluid course and U-shaped fluid course. In the time switching on to magnet exciting coil, in cylinder body fluid course and U-shaped fluid course effective damping gap, a certain size magnetic field will be produced, flow through effective damping gap magnetic flow liquid viscosity increase, yield stress strengthens, thereby mineralization pressure is poor between magnetic flow liquid cavity volume I and cavity volume II, apply size of current and can realize effective control of damping force by control. Do not reducing under the prerequisite of damping clearance width, this structural design has increased effective damping length and the section of shear, has ensured that damper can export enough large damping force.
(2) compared with the MR damper being fixedly connected with piston rod with the piston of tradition winding magnet exciting coil, the magnet exciting coil of the utility model MR damper is integrated on the spool of built-in MR valve, when design, separate with piston rod, this separate type design is not increasing under the prerequisite of MR damper external dimensions, adopt less exciting current with regard to exportable larger controllable damping force, damping force dynamic adjustments scope is wider simultaneously, the utility model MR damper compact conformation and volume are little, be specially adapted to railway, automobile, the isostructural vibration damping antidetonation of bridge system.
(3) the utility model MR damper part used is except piston cylinder, damper cylinder body and spool are made up of mild steel permeability magnetic material, and remaining parts is made by non-magnet_conductible material. This design can effectively ensure the magnetic line of force concentrated being distributed in effective damping gap as far as possible, gives full play to the effect of vertical magnetic field to magnetic flow liquid, improves the efficiency of MR damper, and effectively reduces the energy consumption of MR damper.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model damper housing structure schematic diagram.
Fig. 3 is the A-A profile of Fig. 2 damper cylinder body.
Fig. 4 is the utility model piston cylinder structure schematic diagram.
Fig. 5 is the B-B profile of Fig. 4 piston cylinder.
The magnetic flow liquid schematic diagram of fluid course of flowing through when Fig. 6 is the utility model Tensile.
Fig. 7 is the utility model magnetic line of force distribution schematic diagram.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figure 1, the utility model comprises: left hanger 1, piston rod 2, piston cylinder 3, left end cap 4, screw I 5, magnet exciting coil 6, damper cylinder body 7, floating piston 8, right end cap 9, right hanger 10, screw II 11, compressed air cavity volume 12, magnetic flow liquid cavity volume I 13, cylinder body fluid course 14, spool 15, U-shaped fluid course 16, magnetic flow liquid cavity volume II 17, piston head 18, gas cavity volume I 19 and gas cavity volume II 20.
Fig. 2 is the utility model damper housing structure schematic diagram, and in figure, 21 is damper cylinder body 7 end caps.
Fig. 3 is the A-A profile of Fig. 2 damper cylinder body, and in figure, 22 is waist through hole groove, and 23 is circular groove. Damper cylinder body 7 end caps are processed with 4 waist through hole grooves 22 that are circumferentially evenly arranged, and form cylinder body fluid course 14. Spool 15 right sides are processed with four circular positioning convex, and four circular groove 23 interference fits of four circular positioning convex and damper cylinder body 7 end cap left sides, play the effect of axial restraint spool 15.
Fig. 4 is the utility model piston cylinder structure schematic diagram. Piston cylinder 3 right part outer surfaces and middle part outer surface are processed with two sections of external screw threads; Piston cylinder 3 left part inner surfaces are processed with two toroidal cavities; Piston cylinder 3 right parts are processed with 4 fluid courses that pass in and out U-shaped fluid course 16 and magnetic flow liquid cavity volume II 17 for magnetic flow liquid.
Fig. 5 is the B-B profile of Fig. 4 piston cylinder. 24 manholes that are axially evenly arranged for piston cylinder right part in figure, 4 manholes form the fluid course of the U-shaped fluid course 16 of turnover and magnetic flow liquid cavity volume II 17.
The magnetic flow liquid fluid course schematic diagram of flowing through when Fig. 6 is the utility model Tensile. In figure, the magnetic flow liquid in magnetic flow liquid cavity volume I 13 flow through cylinder body fluid course 14 and U-shaped fluid course 16, enter in magnetic flow liquid cavity volume II 17 by the manhole 24 of piston cylinder 3 right parts.
Fig. 7 is the utility model magnetic line of force distribution schematic diagram. Magnetic flow liquid in figure in cylinder body fluid course 14 and U-shaped fluid course 16 effective damping gaps is subject to the effect of vertical magnetic field.
The utility model operation principle is as follows:
As shown in Fig. 1, Fig. 6 and Fig. 7: piston rod drives piston head toward left movement, while being MR damper Tensile, magnetic flow liquid in magnetic flow liquid cavity volume I flow through cylinder body fluid course and U-shaped fluid course, enter in magnetic flow liquid cavity volume II by the manhole of piston cylinder right part. In the time switching on to magnet exciting coil, due to magnetic fields, the magnetic flow liquid viscosity in cylinder body fluid course and U-shaped fluid course effective damping gap can increase, and yield stress strengthens. When magnetic flow liquid is flowed through effective damping gap, just must overcome the intermolecular power of this catenation, thereby cause the flow through resistance of fluid course of magnetic flow liquid to increase, can slow down or stop flowing of liquid, and make magnetic flow liquid cavity volume I and magnetic flow liquid cavity volume II generation pressure differential. By regulating size of current in magnet exciting coil, can change the yield stress of magnetic flow liquid, to reach the object of the required output damping force of control piston end surface size.
Otherwise, piston rod drives the piston head motion of turning right, be MR damper by compression time, now flow through cylinder body fluid course and U-shaped fluid course of the magnetic flow liquid in magnetic flow liquid cavity volume II, enters in magnetic flow liquid cavity volume I by the manhole of piston cylinder right part. By regulating size of current in magnet exciting coil, same adjusting piston end surface output damping force size.
Claims (4)
1. the MR damper that built-in magnetorheological valve carries out damping capacity control, it is characterized in that comprising: left hanger (1), piston rod (2), piston cylinder (3), left end cap (4), screw I (5), magnet exciting coil (6), damper cylinder body (7), floating piston (8), right end cap (9), right hanger (10), screw II (11), compressed air cavity volume (12), magnetic flow liquid cavity volume I (13), cylinder body fluid course (14), spool (15), U-shaped fluid course (16), magnetic flow liquid cavity volume II (17), piston head (18), gas cavity volume I (19) and gas cavity volume II (20), left end and the right-hand member of piston rod (2) are processed with respectively external screw thread, piston rod (2) left end is fixedly connected with by screw thread with left hanger (1), and piston rod (2) right-hand member is fixedly connected with by screw thread with piston head (18), piston rod (2) and piston cylinder (3) matched in clearance, piston rod (2) seals by sealing ring with piston cylinder (3), piston head (18) and piston cylinder (3) matched in clearance, piston head (18) seals by sealing ring with piston cylinder (3), piston cylinder (3) right part outer surface and middle part outer surface are processed with two sections of external screw threads, piston cylinder (3) is fixedly connected with by screw thread with left end cap (4), between piston cylinder (3) and left end cap (4), seals by sealing ring, piston cylinder (3) right part is fixedly connected with by screw thread with damper cylinder body (7), left end cap (4) is fixedly connected with by screw I (5) with damper cylinder body (7), between left end cap (4) and damper cylinder body (7), seals by sealing ring, spool (15) left side is processed with four circular positioning convex, four circular groove interference fits of four circular positioning convex and left end cap (4) right side, spool (15) right side is processed with four circular positioning convex, four circular groove interference fits of four circular positioning convex and damper cylinder body (7) end cap left side, in the middle of spool (15), be processed with toroidal cavity, magnet exciting coil (6) uniform winding is in the groove of spool (15), and its lead-in wire is derived by the fairlead in damper cylinder body (7) end cap, floating piston (8) and damper cylinder body (7) matched in clearance, floating piston (8) seals by sealing ring with damper cylinder body (7), right end cap (9) is fixedly connected with by screw II (11) with damper cylinder body (7), right end cap (9) seals by sealing ring with damper cylinder body (7), right end cap (9) right-hand member is processed with external screw thread, and right end cap (9) is fixedly connected with by screw thread with right hanger (10), cavity between damper cylinder body (7) and floating piston (8) forms magnetic flow liquid cavity volume I (13), damper cylinder body (7) inner surface middle part forms damper cylinder body (7) end cap, and damper cylinder body (7) end cap is processed with 4 waist through hole grooves that are circumferentially evenly arranged, and forms cylinder body fluid course (14), cavity between damper cylinder body (7) end cap, piston head (18) and piston cylinder (3) forms magnetic flow liquid cavity volume II (17), spool (15) outer surface and damper cylinder body (7) inner surface surround annular fluid course I, spool (15) left side and left end cap (4) right side surround disc fluid course II, spool (15) inner surface and piston cylinder (3) outer surface surround annular fluid course III, the damping clearance width of three sections of fluid courses is 1mm, annular fluid course I, disc fluid course II and annular fluid course III form U-shaped fluid course (16), in magnetic flow liquid cavity volume I (13), magnetic flow liquid cavity volume II (17), U-shaped fluid course (16) and cylinder body fluid course (14), be filled with magnetic flow liquid, magnetic flow liquid cavity volume I (13) and magnetic flow liquid cavity volume II (17) are communicated with by cylinder body fluid course (14) and U-shaped fluid course (16), piston cylinder (3), damper cylinder body (7), spool (15), magnet exciting coil (6) and cylinder body fluid course (14) and U-shaped fluid course (16) form the built-in MR valve of MR damper, in the time giving magnet exciting coil (6) energising, due to galvanomagnetic-effect, produce the magnetic field vertical with the mobile direction of magnetic flow liquid at cylinder body fluid course (14) with in U-shaped fluid course (16), the mobile property of magnetic flow liquid in cylinder body fluid course (14) and U-shaped fluid course (16) is reduced, thereby mineralization pressure is poor between magnetic flow liquid cavity volume I (13) and magnetic flow liquid cavity volume II (17), and then make the suffered damping force generation respective change in piston head (18) right side, realize the object of MR valve control Damp Properties of Magnetorheological Damper.
2. the MR damper that described a kind of built-in magnetorheological valve according to claim 1 carries out damping capacity control, is characterized in that: the cavity between piston rod (2) outer surface, piston cylinder (3) inner surface and piston head (18) left side forms gas cavity volume I (19); Cavity between piston rod (2) middle circle connected in star and piston head (18) left side forms gas cavity volume II (20); Piston rod (2) right-hand member is processed with 4 manholes that are circumferentially evenly arranged.
3. the MR damper that a kind of built-in magnetorheological valve according to claim 1 carries out damping capacity control, is characterized in that: the cavity between floating piston (8), damper cylinder body (7) and right end cap (9) forms compressed air cavity volume (12); In compressed air cavity volume (12), fill Compressed Gas.
4. the MR damper that a kind of built-in magnetorheological valve according to claim 1 carries out damping capacity control, is characterized in that: piston cylinder (3), damper cylinder body (7) and spool (15) are made up of mild steel permeability magnetic material; Left hanger (1), piston rod (2), left end cap (4), screw I (5), floating piston (8), right end cap (9), right hanger (10), screw II (11) and piston head (18) are made up of stainless steel non-magnet_conductible material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520584068 | 2015-08-06 | ||
| CN2015205840689 | 2015-08-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205315604U true CN205315604U (en) | 2016-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620003821.5U Withdrawn - After Issue CN205315604U (en) | 2015-08-06 | 2016-01-01 | Built -in magnetic current becomes magnetic current change attenuator that valve carries out control of damping performance |
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| CN (1) | CN205315604U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003589A (en) * | 2015-08-06 | 2015-10-28 | 华东交通大学 | Magnetorheological damper with built-in magnetorheological valve for damping performance control |
| CN107744638A (en) * | 2017-11-02 | 2018-03-02 | 李承昕 | A kind of bicycle ridden for VR |
| CN109058357A (en) * | 2018-08-31 | 2018-12-21 | 浙江森森汽车零部件有限公司 | The damping vibration attenuation component of automobile hanging assembly |
| CN114718977A (en) * | 2022-05-06 | 2022-07-08 | 重庆大学 | Magnetorheological hydro-pneumatic spring |
| CN114962525A (en) * | 2022-05-31 | 2022-08-30 | 重庆大学 | Magneto-rheological bidirectional valve-controlled hydraulic damper |
-
2016
- 2016-01-01 CN CN201620003821.5U patent/CN205315604U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003589A (en) * | 2015-08-06 | 2015-10-28 | 华东交通大学 | Magnetorheological damper with built-in magnetorheological valve for damping performance control |
| CN107744638A (en) * | 2017-11-02 | 2018-03-02 | 李承昕 | A kind of bicycle ridden for VR |
| CN109058357A (en) * | 2018-08-31 | 2018-12-21 | 浙江森森汽车零部件有限公司 | The damping vibration attenuation component of automobile hanging assembly |
| CN114718977A (en) * | 2022-05-06 | 2022-07-08 | 重庆大学 | Magnetorheological hydro-pneumatic spring |
| CN114718977B (en) * | 2022-05-06 | 2024-01-26 | 重庆大学 | Magnetorheological oil-gas spring |
| CN114962525A (en) * | 2022-05-31 | 2022-08-30 | 重庆大学 | Magneto-rheological bidirectional valve-controlled hydraulic damper |
| CN114962525B (en) * | 2022-05-31 | 2024-06-04 | 重庆大学 | Magneto-rheological bidirectional valve-controlled hydraulic damper |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160615 Effective date of abandoning: 20170704 |
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| AV01 | Patent right actively abandoned |