CN206958148U - A kind of new bitubular list goes out pole magnetorheological damper - Google Patents
A kind of new bitubular list goes out pole magnetorheological damper Download PDFInfo
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- CN206958148U CN206958148U CN201720893985.4U CN201720893985U CN206958148U CN 206958148 U CN206958148 U CN 206958148U CN 201720893985 U CN201720893985 U CN 201720893985U CN 206958148 U CN206958148 U CN 206958148U
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- end cap
- piston head
- damper
- cylinder body
- valve
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Abstract
The utility model discloses a kind of new bitubular list to go out pole magnetorheological damper, is mainly made up of piston rod, attenuator end cap, cylinder body, piston head, magnet exciting coil, piston head sleeve and magnetic valve etc.；The magnetic valve includes spring limiting board, spring, magnet coil and the left and right fixed end cap of valve etc.；Wherein outer cylinder body is fixedly connected with the left and right end cap of damper by screw respectively；Inner cylinder body is fixed by damper left end cap, magnetic valve and damper right end cap；Piston rod drives piston head to be moved in inner cylinder body；Magnetic valve is arranged on the left end of inner cylinder body, and inside and outside cylinder body is divided into two parts.Magnetic flow liquid connects inside and outside cylinder body via magnetic valve.The damper reduces the utilization of conventional float piston, so as to reduce the friction between structural member, adds the life-span of damper；And the gas pressure in damper is in low-pressure state, be advantageous to the sealing of component.The damper is particularly suitable in vehicle suspension system.
Description
Technical field
It the utility model is related to a kind of MR damper, more particularly to a kind of new bitubular list rod magnetorheological damping
Device.
Background technology
MR damper is made due to the characteristics of being exported with Millisecond response speed, big control range and big damping force
Obtaining it turns into half outstanding active actuators part of industrial application.At present, MR damper is widely used to building
And the occasion such as vibration damping of the vibration damping vibration prevention system of bridge, rail vehicles and automobile suspension system.
Stored energy mechanism is needed to ensure the security of MR damper in general Design of MR dampers, it is traditional
Energy storing structure is using structures such as additional accumulator, built-in floating pistons.But additional accumulator mode is used, adds damper
External structure size, be unfavorable for the safe handling of damper；According to the mode of internal increase floating piston, lived due to floating
Plug constantly rubs during reciprocating motion with damper inner surface of cylinder block, so easily causes the damage of structure devices again
The temperature of inside is added, these are all unfavorable for the service life of damper；In addition, the gas below floating piston is in high pressure
State is higher to the sealing requirements of device.
At present, Publication No. CN101649880A Chinese invention patent " double-cylinder by-pass type magnetorheological vibration damper ", its
Cylinder barrel bottom is provided with valve, and in one magnetic rheology effect valve of external connection of damper, as the piston moves, magnetic flow liquid exists
Flowed between working cylinder, magnetic rheology effect valve and liquid storage cylinder, under different magnetic field effect and then provide certain damping force.It is this
The complexity of magnetic rheology effect valve increase structure is set up in outside, the overall dimensions of structure is also increased, is unfavorable for damper
Structural stability.A kind of Publication No. CN102889332A Chinese invention patent " magnetorheological damper for automotive suspension ", should
Volume compensation chamber of the space that damper is formed using floating piston with cylinder end caps as damper；When damper is in work
During state, floating piston is moved back and forth in cylinder body under force, therefore floating piston is in inner surface of cylinder block always
It Frotteurism, will so cause damper inner surface of cylinder block to wear, and reduce the service life of damper.
Based on this, it is necessary to propose that a kind of new bitubular list goes out pole magnetorheological damper, in the inner cylinder body of damper and outer
Magnetic valve is installed between cylinder body, the channel size of magnetic valve is flowed through by changing magnetic flow liquid, is provided for damper certain attached
Plus-pressure, the function of replacing traditional floating piston is realized, the service life of structure devices is improved, more ensures magnetorheological damping
The safety and stability of device.
The content of the invention
In order to overcome the problem of MR damper is present described in background technology and meet actually making for MR damper
With requiring, the utility model provides a kind of new bitubular list and goes out pole magnetorheological damper.The damper in damper by setting
Inside and outside cylinder body is equipped with, inside and outside cylinder body is separated by damper left end cap, magnetic valve and damper right end cap；It is connected to piston rod
On piston head be arranged on inner cylinder body in；The magnetic valve for being provided with spring, spring limiting board and magnet coil is arranged on inner cylinder body
Low order end；When piston rod drives piston head compression, make it that the low order end of spring limiting board and valve are right by the elastic force of spring
The groove of fixed end cap left end is in close contact, and now the magnetic flow liquid in inner cylinder body flows through the port size reduction of magnetic valve, carries
For certain damping force.When piston head stretches, magnet coil is passed through electric current, will attract spring retainer in the presence of electromagnetism
Plate, resist the elastic force of spring so that the magnetic flow liquid of outer cylinder body can enter in inner cylinder body quickly through magnetic valve.The magnetic valve
Use instead of the accumulation of energy structure such as floating piston used in traditional MR damper, reduce between damper device
Friction, add the service life of damper structure component；Also so that the air pressure in damper is in relatively low pressure shape
State, reduce the seal request of device；And the damper space utilization is reasonable, compact-sized.So that MR damper is more
With reliability and security.
Technical scheme includes used by the utility model solves its technical problem：Left hanger (1), piston rod (2), damping
Device left end cap (3), fixing screws I (4), inner cylinder body (5), outer cylinder body (6), piston head right baffle-plate (7), piston head (8), excitation wire
Enclose (9), piston head sleeve (10), piston head right shell body (11), locking nut (12), magnetic valve (13), fixing screws II (14),
Damper right end cap (15) and right hanger (16)；The magnetic valve (13) is by spring limiting board (17), spring (18), electromagnetism
The left fixed end cap (20) of coil (19), valve, fixing screws III (21) and right fixed end cap (22) composition of valve；Piston rod (2) is left
End is connected with left hanger (1) by screw threads for fastening；Manhole, piston rod (2) outer surface are machined among damping left end cap (3)
Coordinate with damper left end cap (3) manhole internal surface gaps, and sealed by sealing ring；Damper left end cap (3)
It is fixedly connected by fixing screws I (4) with outer cylinder body (6), and is sealed by sealing ring；The right side of damper left end cap (3)
End is machined with annular groove；Damper left end cap (3) right part annular groove is in close contact with inner cylinder body (5) left end, and is led to
Sealing ring is crossed to be sealed；Piston rod (2) right-hand member is machined with the shaft shoulder；Manhole is machined among piston head right baffle-plate (7), it is living
Stopper rod (2) right-hand member outer surface coordinates with piston head right baffle-plate (7) manhole gap；Piston rod (2) the right-hand member shaft shoulder and piston head
Right baffle-plate (7) left side is in close contact；Piston head right baffle-plate (7) left side is machined with waist typed through hole, as magnetic flow liquid passage；
Manhole coordinates with piston rod (2) right-hand member outer surface gap among piston head (8)；Piston head (8) left side is left with piston head
Baffle plate (7) right side is in close contact；The processing of piston head (8) periphery is fluted, for winding magnet exciting coil (9)；Piston head (8)
Right side is in close contact with piston head right shell body (11) left side；Manhole is machined among piston head right shell body (11), with
Piston rod (2) right-hand member outer surface gap coordinates；Piston head right shell body (11) right-hand member is machined with waist typed through hole, leads to as magnetic flow liquid
Road；Piston head right baffle-plate (7), piston head (8) are locked with piston head right shell body (11) by locking nut (12) and piston rod (2)
It is fixed；Piston head sleeve (10) left end is machined with boss, and in the right-hand member groove of piston head right baffle-plate (7)；Piston head
Sleeve (10) right-hand member is machined with boss, in the left end groove of piston head right shell body (11)；Piston head sleeve (10) interior table
Face coordinates with piston head (8) outer surface gap, forms magnetic flow liquid passage；Piston head sleeve (10) outer surface and inner cylinder body (5)
Internal surface gaps coordinate, and are sealed by sealing ring；The left fixed end cap (20) of valve passes through solid with the right fixed end cap (22) of valve
Determine screw III (21) to be fixedly connected；Manhole is machined among the left fixed end cap (20) of valve, as magnetic flow liquid passage；Valve
Left fixed end cap (20) right-hand member is machined with annular groove；Magnet coil (19), spring (18), spring limiting board (17) are installed successively
In left fixed end cap (20) the right-hand member annular groove of valve；The centre of spring limiting board (17) is machined with manhole；Spring retainer
Circular through-hole inner surface coordinates with left fixed end cap (20) the right-hand member annular groove side clearance of valve among plate (17)；Spring limiting board
(17) can move back and forth under force；Spring limiting board (17) right-hand member is machined with 4 waists type groove A, B, C, D, as
Magnetic flow liquid passage；The inner surface radial direction of spring limiting board (17) is machined with 4 manhole A1、B1、C1、D1, as magnetorheological
Liquid passage；Right fixed end cap (22) left end of valve is in close contact with inner cylinder body (5) right-hand member；Right fixed end cap (22) the left end outer surface of valve
Coordinate with inner cylinder body (5) internal surface gaps, and sealed by sealing ring；Right fixed end cap (22) left end of valve is machined with recessed
Groove, as magnetic flow liquid passage；Right fixed end cap (22) left end of valve is circumferentially machined with 4 waist typed through hole A2、B2、C2、D2, as
Magnetic flow liquid passage；Right fixed end cap (22) right-hand member of valve is machined with fan annular groove, the passage as magnetic flow liquid；The right fixing end of valve
(22) right-hand member is covered to be in close contact with damper right end cap (15) left end bottom portion of groove；Damper right end cap (15) and outer cylinder body (6)
It is fixedly connected by fixing screws II (14)；Damper right end cap (15) coordinates with outer cylinder body (6) internal surface gaps, and by close
Seal is sealed；Damper right end cap (15) right-hand member is connected with right hanger (16) by screw threads for fastening.Piston rod (2), damping
Device left end cap (3), inner cylinder body (5), outer cylinder body (6) and damper right end cap (15) are made by non-magnet_conductible material；Piston head is left
Baffle plate (7), piston head (8), magnet exciting coil (9), piston head sleeve (10) and piston head right shell body (11) are by permeability magnetic material system
Into.
The utility model has an advantageous effect in that compared with background technology：
（1）The utility model MR damper uses double-cylinder type structure, and inside and outside cylinder body is provided with damper.Interior,
Outer cylinder body is separated by damper left end cap, magnetic valve and damper right end cap；The piston head of connection on the piston rod is arranged on
In inner cylinder body；The magnetic valve for being provided with spring, spring limiting board and magnet coil is arranged on the low order end of inner cylinder body；Work as piston rod
When driving piston head compression, the annular of the low order end of spring limiting board and the right fixed end cap left end of valve is caused by the elastic force of spring
Groove is in close contact, and now the magnetic flow liquid in inner cylinder body flows through the port size reduction of magnetic valve, there is provided certain damping force.
When piston head stretches, magnet coil is passed through electric current, will attract spring limiting board in the presence of electromagnetism, resists the bullet of spring
Power so that the magnetic flow liquid of outer cylinder body can enter inner cylinder body quickly through magnetic valve.Conventional float is replaced using magnetic valve
Piston type energy storage equipment, the friction between system component is reduced, add MR damper component service life.
（2）The utility model Novel magneto-rheological damper replaces conventional float piston type energy storage equipment using magnetic valve,
So that the gas in damper is in low-pressure state, the seal request of system is reduced, so as to simplify the structure of damper.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
It is the utility model electromagnetic valve structure schematic diagram shown in Fig. 2.
Magnetic flow liquid flows to schematic diagram at magnetic valve when being the compression of the utility model piston head shown in Fig. 3.
Magnetic flow liquid flows to schematic diagram at magnetic valve when being the stretching of the utility model piston head shown in Fig. 4.
It is the utility model spring retainer plate structure schematic diagram shown in Fig. 5.
It is the right fixed end cap structural representation of the utility model valve shown in Fig. 6.
It is the utility model structure cavity volume area schematic shown in Fig. 7.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples：
As shown in figure 1, the utility model includes left hanger (1), piston rod (2), damper left end cap (3), fixing screws I
(4), inner cylinder body (5), outer cylinder body (6), piston head right baffle-plate (7), piston head (8), magnet exciting coil (9), piston head sleeve
(10), piston head right shell body (11), locking nut (12), magnetic valve (13), fixing screws II (14), damper right end cap (15)
And right hanger (16).
It is the utility model electromagnetic valve structure schematic diagram shown in Fig. 2.The magnetic valve (13) be by spring limiting board (17),
The left fixed end cap (20) of spring (18), magnet coil (19), valve, fixing screws III (21) and right fixed end cap (22) group of valve
Into.
Magnetic flow liquid flows to schematic diagram at magnetic valve when being the compression of the utility model piston head shown in Fig. 3.In external drive
Under, when piston rod (2) drives piston head (8) to be in compressive state, elastic force caused by the spring (18) in magnetic valve (13)
Under effect, the groove of spring limiting board (17) low order end and right fixed end cap (22) left end of valve is in close contact；Now inner cylinder body (5)
Interior magnetic flow liquid enters right fixed end cap (22) the left end groove of valve by manhole among the left fixed end cap (20) of valve, successively
By 4 manhole A of radial direction in spring limiting board1、B1、C1、D1, the right fixed end cap (22) of valve waist typed through hole A2、B2、
C2、D2, finally entered by the fan annular groove of the right fixed end cap (22) of valve in the gap of outer cylinder body and inner cylinder body.
Magnetic flow liquid flows to schematic diagram at magnetic valve when being the stretching of the utility model piston head shown in Fig. 4.When piston rod (2)
When driving piston head (8) stretching, the magnet coil (19) in magnetic valve (13) is passed through electric current, in the presence of magnetic force, spring limit
Position plate (17) resistance spring (18) elastic force is simultaneously moved to the left, and is now in outer cylinder body (6) and the magnetic current in the gap of inner cylinder body (5)
Become the waist typed through hole A that liquid passes through the right fixed end cap (22) of valve by the fan annular groove of the right fixed end cap (22) of valve successively2、B2、C2、
D2, right fixed end cap (22) the left end groove of valve, inner cylinder body (5) is finally entered by manhole among the left fixed end cap (20) of valve
It is interior.
It is the utility model spring retainer plate structure schematic diagram shown in Fig. 5.The centre of spring limiting board (17) is machined with circle
Shape through hole；The right-hand member of spring limiting board (17) is machined with 4 waist type grooves A, B, C, D；Four waist type grooves and middle circle are logical
What hole communicated has 4 through hole A respectively1、B1、C1、D1, their passages collectively as magnetic flow liquid.
It is the right fixed end cap structural representation of the utility model valve shown in Fig. 6.Right fixed end cap (22) left end of valve circumferentially adds
Work has 4 waist typed through hole A2、B2、C2、D2, as magnetic flow liquid passage；It is logical that right fixed end cap (22) right-hand member of valve is machined with fan annular
Road, the passage as magnetic flow liquid；
It is the utility model structure cavity volume area schematic shown in Fig. 7.Damper left end cap (3), inner cylinder body (5) and piston
Head right baffle-plate (7) forms closing cavity volume I, for filling magnetic flow liquid；Inner cylinder body (5), piston head right shell body (11) and magnetic valve
(13) closing cavity volume II is formed, for filling magnetic flow liquid；Damper left end cap (3), inner cylinder body (5), outer cylinder body (6), electromagnetism
Valve (13) and damper right end cap (15) collectively form closing cavity volume III, IV, and wherein cavity volume III is for filling magnetic flow liquid, appearance
Chamber IV is gas.
Utility model works principle is as follows：
When there is external drive, piston rod (2) drives piston head (8) to be moved axially in reciprocal fashion in inner cylinder body (5), excitation
Coil (9) is passed through current induced magnetic field, and under the influence of a magnetic field, the magnetic flow liquid at damping clearance produces magnetorheological effect
Should, there is provided certain damping force.At the same time, when piston rod (2) drives piston head (8) compression, by the bullet of spring (18)
Power causes the groove of the low order end of spring limiting board (17) and right fixed end cap (22) left end of valve to be in close contact, now inner cylinder body
(5) port size that the magnetic flow liquid in flows through magnetic valve (13) reduces, and produces certain damping force.When piston rod (2) drives
When piston head (8) stretches, magnet coil (19) is passed through electric current, and caused magnetic force attracts spring limiting board (17) resistance spring (18)
Elastic force magnetic flow liquid is increased by the channel size of magnetic valve (13) so that piston head can be replied quickly.
Claims (2)
1. a kind of new bitubular list goes out pole magnetorheological damper, it is characterised in that including：Left hanger (1), piston rod (2), damping
Device left end cap (3), fixing screws I (4), inner cylinder body (5), outer cylinder body (6), piston head right baffle-plate (7), piston head (8), excitation wire
Enclose (9), piston head sleeve (10), piston head right shell body (11), locking nut (12), magnetic valve (13), fixing screws II (14),
Damper right end cap (15) and right hanger (16)；The magnetic valve (13) is by spring limiting board (17), spring (18), electromagnetism
The left fixed end cap (20) of coil (19), valve, fixing screws III (21) and right fixed end cap (22) composition of valve；Piston rod (2) is left
End is connected with left hanger (1) by screw threads for fastening；Manhole, piston rod (2) outer surface are machined among damping left end cap (3)
Coordinate with damper left end cap (3) manhole internal surface gaps, and sealed by sealing ring；Damper left end cap (3)
It is fixedly connected by fixing screws I (4) with outer cylinder body (6), and is sealed by sealing ring；The right side of damper left end cap (3)
End is machined with annular groove；Damper left end cap (3) right part annular groove is in close contact with inner cylinder body (5) left end, and is led to
Sealing ring is crossed to be sealed；Piston rod (2) right-hand member is machined with the shaft shoulder；Manhole is machined among piston head right baffle-plate (7), it is living
Stopper rod (2) right-hand member outer surface coordinates with piston head right baffle-plate (7) manhole gap；Piston rod (2) the right-hand member shaft shoulder and piston head
Right baffle-plate (7) left side is in close contact；Piston head right baffle-plate (7) left side is machined with waist typed through hole, as magnetic flow liquid passage；
Manhole coordinates with piston rod (2) right-hand member outer surface gap among piston head (8)；Piston head (8) left side is left with piston head
Baffle plate (7) right side is in close contact；The processing of piston head (8) periphery is fluted, for winding magnet exciting coil (9)；Piston head (8)
Right side is in close contact with piston head right shell body (11) left side；Manhole is machined among piston head right shell body (11), with
Piston rod (2) right-hand member outer surface gap coordinates；Piston head right shell body (11) right-hand member is machined with waist typed through hole, leads to as magnetic flow liquid
Road；Piston head right baffle-plate (7), piston head (8) are locked with piston head right shell body (11) by locking nut (12) and piston rod (2)
It is fixed；Piston head sleeve (10) left end is machined with boss, and in the right-hand member groove of piston head right baffle-plate (7)；Piston head
Sleeve (10) right-hand member is machined with boss, in the left end groove of piston head right shell body (11)；Piston head sleeve (10) interior table
Face coordinates with piston head (8) outer surface gap, forms magnetic flow liquid passage；Piston head sleeve (10) outer surface and inner cylinder body (5)
Internal surface gaps coordinate, and are sealed by sealing ring；The left fixed end cap (20) of valve passes through solid with the right fixed end cap (22) of valve
Determine screw III (21) to be fixedly connected；Manhole is machined among the left fixed end cap (20) of valve, as magnetic flow liquid passage；Valve
Left fixed end cap (20) right-hand member is machined with annular groove；Magnet coil (19), spring (18), spring limiting board (17) are installed successively
In left fixed end cap (20) the right-hand member annular groove of valve；The centre of spring limiting board (17) is machined with manhole；Spring retainer
Circular through-hole inner surface coordinates with left fixed end cap (20) the right-hand member annular groove side clearance of valve among plate (17)；Spring limiting board
(17) can move back and forth under force；Spring limiting board (17) right-hand member is machined with 4 waists type groove A, B, C, D, as
Magnetic flow liquid passage；The inner surface radial direction of spring limiting board (17) is machined with 4 manhole A1、B1、C1、D1, as magnetorheological
Liquid passage；Right fixed end cap (22) left end of valve is in close contact with inner cylinder body (5) right-hand member；Right fixed end cap (22) the left end outer surface of valve
Coordinate with inner cylinder body (5) internal surface gaps, and sealed by sealing ring；Right fixed end cap (22) left end of valve is machined with recessed
Groove, as magnetic flow liquid passage；Right fixed end cap (22) left end of valve is circumferentially machined with 4 waist typed through hole A2、B2、C2、D2, as
Magnetic flow liquid passage；Right fixed end cap (22) right-hand member of valve is machined with fan circular passage, the passage as magnetic flow liquid；The right fixation of valve
End cap (22) right-hand member is in close contact with damper right end cap (15) left end bottom portion of groove；Damper right end cap (15) and outer cylinder body
(6) it is fixedly connected by fixing screws II (14)；Damper right end cap (15) coordinates with outer cylinder body (6) internal surface gaps, and leads to
Sealing ring is crossed to be sealed；Damper right end cap (15) right-hand member is connected with right hanger (16) by screw threads for fastening.
2. a kind of new bitubular list according to claim 1 goes out pole magnetorheological damper, it is characterised in that：Piston rod (2),
Damper left end cap (3), inner cylinder body (5), outer cylinder body (6) and damper right end cap (15) are made by non-magnet_conductible material；Piston
Head right baffle-plate (7), piston head (8), magnet exciting coil (9), piston head sleeve (10) and piston head right shell body (11) are by magnetic conduction material
Material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720893985.4U CN206958148U (en) | 2017-07-22 | 2017-07-22 | A kind of new bitubular list goes out pole magnetorheological damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720893985.4U CN206958148U (en) | 2017-07-22 | 2017-07-22 | A kind of new bitubular list goes out pole magnetorheological damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206958148U true CN206958148U (en) | 2018-02-02 |
Family
ID=61381182
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720893985.4U Expired - Fee Related CN206958148U (en) | 2017-07-22 | 2017-07-22 | A kind of new bitubular list goes out pole magnetorheological damper |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611498A (en) * | 2018-11-16 | 2019-04-12 | 重庆大学 | Set binary channels bitubular anti-settling MR damper in bottom |
| CN109812536A (en) * | 2019-03-08 | 2019-05-28 | 重庆工业职业技术学院 | Automobile Magnetorheological Semi-active Suspension damper and control method |
| CN110454571A (en) * | 2019-08-22 | 2019-11-15 | 江西科技学院 | A kind of parking device and automobile |
| CN112008693A (en) * | 2020-07-06 | 2020-12-01 | 中国科学院深圳先进技术研究院 | Waist assistance exoskeleton |
| CN114962525A (en) * | 2022-05-31 | 2022-08-30 | 重庆大学 | Magneto-rheological bidirectional valve-controlled hydraulic damper |
| WO2022179006A1 (en) * | 2021-02-23 | 2022-09-01 | 山东科技大学 | Composite impact resistance apparatus and applications thereof |
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2017
- 2017-07-22 CN CN201720893985.4U patent/CN206958148U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611498A (en) * | 2018-11-16 | 2019-04-12 | 重庆大学 | Set binary channels bitubular anti-settling MR damper in bottom |
| CN109611498B (en) * | 2018-11-16 | 2020-02-11 | 重庆大学 | Bottom-mounted double-channel double-cylinder anti-settling magnetorheological damper |
| CN109812536A (en) * | 2019-03-08 | 2019-05-28 | 重庆工业职业技术学院 | Automobile Magnetorheological Semi-active Suspension damper and control method |
| CN110454571A (en) * | 2019-08-22 | 2019-11-15 | 江西科技学院 | A kind of parking device and automobile |
| CN112008693A (en) * | 2020-07-06 | 2020-12-01 | 中国科学院深圳先进技术研究院 | Waist assistance exoskeleton |
| CN112008693B (en) * | 2020-07-06 | 2022-04-19 | 中国科学院深圳先进技术研究院 | Waist assistance exoskeleton |
| WO2022179006A1 (en) * | 2021-02-23 | 2022-09-01 | 山东科技大学 | Composite impact resistance apparatus and applications thereof |
| GB2614631A (en) * | 2021-02-23 | 2023-07-12 | Univ Shandong Science & Tech | Composite impact resistance apparatus and applications thereof |
| CN114962525A (en) * | 2022-05-31 | 2022-08-30 | 重庆大学 | Magneto-rheological bidirectional valve-controlled hydraulic damper |
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