CN109826903A - Set channel MR damper in a kind of bottom of band sedimentation Active dispersion devices - Google Patents
Set channel MR damper in a kind of bottom of band sedimentation Active dispersion devices Download PDFInfo
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- CN109826903A CN109826903A CN201910116247.2A CN201910116247A CN109826903A CN 109826903 A CN109826903 A CN 109826903A CN 201910116247 A CN201910116247 A CN 201910116247A CN 109826903 A CN109826903 A CN 109826903A
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- 238000004062 sedimentation Methods 0.000 title claims abstract description 15
- 239000006185 dispersion Substances 0.000 title claims abstract description 12
- 239000012530 fluid Substances 0.000 claims abstract description 67
- 238000005242 forging Methods 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 13
- 230000005284 excitation Effects 0.000 claims description 11
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000006249 magnetic particle Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a kind of bottoms of band sedimentation Active dispersion devices to set channel MR damper, including fluid cylinder, bottom cover, positioning column, rotor, stator, top cover, working cylinder, piston component and piston rod；The upper end of the bottom cover is mounted on the open-mouth of the fluid cylinder lower end；Spiral rib is provided on the outer circle wall of the rotor；The rotor is located in fluid cylinder；The stator includes outer cylinder and inner cylinder；Several magnetic poles are disposed between the inner cylinder and the outer cylinder；The stator is coated on rotor, and is located in fluid cylinder；An internal channel is formed between the stator and rotor；An outer tunnel is formed between the stator and fluid cylinder；The top cover is mounted on the upper end of the stator；The working cylinder is located in fluid cylinder, and magnetorheological fluid is housed；The piston component is located in working cylinder；The piston rod is mounted on piston component；The present invention realizes the redisperse after magnetorheological fluid sedimentation, while facilitating energy recycling when MR damper operates normally.
Description
Technical field
The present invention relates to MR damper fields, and in particular to sets channel magnetic in a kind of bottom of band sedimentation Active dispersion devices
Rheological damper.
Background technique
Magnetorheological fluid is mixed by high magnetic permeability, low hysteresis small soft magnetic particles and non-magnetic liquid
Suspended substance.This suspended substance shows the Newtonian fluid characteristic of low viscosity under zero magnetic field condition；And under strong magnetic field action, then
Show the Bingham bulk properties of high viscosity, low-flow.Under zero magnetic field conditions, it is good that magnetorheological fluid shows as mobile performance
Good liquid, apparent viscosity very little；It can increase by two numbers in short time (Millisecond) interior apparent viscosity under strong magnetic field action
More than magnitude, and class solid property is presented；And this variation be it is continuous, reversible, that is, remove behind magnetic field and be restored to original
The state come.However, during from the fifties to the eighties, due to not recognizing the potential ability of its shear stress and depositing
The suspension stability the problems such as, magnetorheological fluid development is always very slowly.
MR damper is based on modern double-action type cartridge type damper principle, using magnetorheological fluid as working media
On A Retrofitted Damper.Due to MR damper can externally-applied magnetic field control under change damping force, no longer need compression valve,
The valves module such as flowing valve, rebuilt valve and recuperation valve, therefore structure is simple, good reliability, while magnetorheological fluid is answered in the presence of surrender
The advantages such as power is big, response is fast, make MR damper have the bright outlook on engineer application.
However, MR damper is had in face of inevitable magnetorheological fluid sedimentation problem.Due to magnetorheological fluid by
Micron-sized soft magnetic particles and carrier fluid composition, there are density contrast between them, and micron particles Brownian movement is weak and weigh
Stress effect is strong, settles unavoidably in carrier fluid, although can be prolonged to a certain extent by the way that the modes such as surfactant are added
The settlement issues of slow magnetorheological fluid, but can not fundamentally overcome.
It is worked normally to influence MR damper by settlement issues, researcher has paid hardships
Effort.Most research work concentrates on alleviating the settlement issues of magnetorheological fluid, improves on suspension stability, and have been achieved with
Rapid progress.However, also standing one month or so i.e. even if the best magnetorheological fluid of LORD company, U.S. suspension stability
It will appear macroscopic delaminating deposition phenomenon.Therefore, for a long time, it is desirable to find reasonable method, can be directed to quiet
The MR damper for setting state applies certain external force stirring action, and the magnetorheological fluid for occurring to settle to a certain degree is promoted to be able to
Redisperse makes MR damper keep preferable state.Unfortunately, due to the complexity and engineer application of mechanical structure
Practical problem, this structure fail effectively to realize so far.
Therefore, a kind of device that can overcome the above problem is needed in the prior art.
Summary of the invention
To realize the present invention purpose and the technical solution adopted is that such, a kind of bottom of band sedimentation Active dispersion devices is set
Channel MR damper, it is characterised in that: including fluid cylinder, bottom cover, positioning column, rotor, stator, top cover, working cylinder, piston group
Part and piston rod.
The fluid cylinder is hollow cylinder, and the open-mouth of lower end has screw thread.
The upper end of the bottom cover is annulus I.The annulus I outer wall has screw thread.The lower end of the bottom cover is disk I.Institute
The end face center for stating disk I has circular hole I.The end face of the disk I is equipped with several counter sinks in same circumference.
The upper end of the bottom cover is mounted on the open-mouth of the fluid cylinder lower end.
The positioning column is mounted on the step of the counter sink.
The rotor is cylindrical body, and the end face center at both ends has projecting shaft.The internal rotor is embedded with mouse cage.Institute
It states and is provided with spiral rib on the outer circle wall of rotor.
The rotor is located in the fluid cylinder, and the stretching of lower end is pivotally supported in the circular hole I of the bottom cover.
The stator includes outer cylinder and inner cylinder.
The inner cylinder is located at the outer barrel.Several magnetic poles are disposed between the inner cylinder and the outer cylinder.It is each
Winding is wound on a magnetic pole.
The stator is coated on the rotor, and is located in the fluid cylinder, and lower end is fixed on the positioning column.
An internal channel is formed between the stator and the rotor.It is formed outside one between the stator and the fluid cylinder
Channel.The stator forms the space for connecting internal channel and outer tunnel by positioning elastic supports.
The top cover includes stepped ring forging and disk II.
The disk II is located in the stepped ring forging, and end face center has circular hole II.The disk II by with institute
It states and passes through spoke in succession between stepped ring forging.
The top cover is mounted on the upper end of the stator.The stretching of the rotor upper end is pivotally supported on the circular hole of the top cover
In II.
The working cylinder is cylindrical shape.The circumferential direction of the working cylinder is evenly equipped with several through slots I and several through-holes I,
Middle groove I is located at the inner headed face of the working cylinder, and position is denoted as equilbrium position.
The working cylinder is located in the fluid cylinder, and lower end is sleeved on the step of the stepped ring forging.The working cylinder
Equipped with magnetorheological fluid.
The piston component is located in the working cylinder, and has gap between the working cylinder.
The piston rod is mounted on piston component, piston component can be pushed to move reciprocatingly in working cylinder.
When applying electric excitation to the winding, rotating excitation field is formed in the stator, the mouse cage of the rotor cuts magnetic
The line of force generates induced current by magneticaction, drives rotor rotation.
When rotor rotation, the spiral bar ribbed belt moves magnetorheological fluid and does rotational flow and axial stream in internal channel
Dynamic, cocurrent is to outer tunnel.
When the piston component is in equilbrium position, flow to the magnetorheological fluid of outer tunnel by the working cylinder with it is described
Gap between fluid cylinder is flowed into inside working cylinder by the through slot and the through-hole I, when the piston component is detached from balance position
It sets when pumping, flows to the magnetorheological fluid of outer tunnel by the gap between the working cylinder and the fluid cylinder, lead to
The through-hole I is crossed to flow into inside working cylinder.
Further, the rotor is made by soft magnetic materials.
The stator is made of silicon steel sheet overlapping.
Further, several through slot II for running through inner cylinder both ends are evenly equipped on the inner wall of the inner cylinder.At adjacent two
On the inner wall of inner cylinder corresponding to magnetic pole, a through slot II is all had.
Further, there is through-hole II inside the positioning column.The counter sink of the through-hole II and the bottom cover is connected.
The winding leads of the stator are drawn by the through-hole II on the positioning column, and are pierced by institute by the counter sink
State bottom cover.
Further, the projecting shaft of the two ends of rotor passes through rolling bearing or sleeve supporting.
Further, it is sealed between the fluid cylinder and the bottom cover by O-ring.
The solution have the advantages that unquestionable, the present invention makes magnetorheological fluid by the spiral rib rotation on rotor
Rotational flow and axial flowing, the redisperse after realizing magnetorheological fluid sedimentation are done, while it is normal to facilitate MR damper
Energy recycling when operation.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of bottom cover of the present invention；
Fig. 3 is the structural schematic diagram of rotor of the present invention；
Fig. 4 is the structural schematic diagram of stator of the present invention；
Fig. 5 is the structural schematic diagram of top cover of the present invention；
Fig. 6 is the structural schematic diagram of working cylinder of the present invention.
In figure: fluid cylinder 1, bottom cover 2, annulus I201, disk I202, circular hole I2021, counter sink 2022, positioning column 3, through-hole
II301, rotor 4, projecting shaft 401, mouse cage 402, spiral rib 403, stator 5, outer cylinder 501, inner cylinder 502, through slot II5021, magnetic
Pole 503, winding 504, winding leads 505, top cover 6, stepped ring forging 601, disk II602, circular hole II6021, spoke 603, work
Cylinder 7, through slot I701, through-hole I702, piston component 8 and piston rod 9.
Specific embodiment
Below with reference to embodiment, the invention will be further described, but should not be construed the above-mentioned subject area of the present invention only
It is limited to following embodiments.Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and used
With means, various replacements and change are made, should all include within the scope of the present invention.
Embodiment:
Referring to Fig. 1 to Fig. 6, channel MR damper is set at a kind of bottom of band sedimentation Active dispersion devices, it is characterised in that:
Including fluid cylinder 1, bottom cover 2, positioning column 3, rotor 4, stator 5, top cover 6, working cylinder 7, piston component 8 and piston rod 9.
The fluid cylinder 1 is hollow cylinder, and the open-mouth of lower end has screw thread.
The upper end of the bottom cover 2 is annulus I201.The annulus I201 outer wall has screw thread.The lower end of the bottom cover 2 is
Disk I202.The end face center of the disk I202 has circular hole I2021.The end face of the disk I202 is equipped in same
Several counter sinks 2022 of circumference.
The upper end of the bottom cover 2 is by being threadably mounted at the open-mouth of 1 lower end of fluid cylinder.The fluid cylinder 1 and the bottom
It is sealed between lid 2 by O-ring.
The positioning column 3 is mounted on the step of the counter sink 2022.
There is through-hole II301 inside the positioning column 3.The counter sink 2022 of the through-hole II301 and the bottom cover 2 connect
It is logical.
The rotor 4 is made by soft magnetic materials.The rotor 4 is cylindrical body, and the end face center at both ends has projecting shaft
401.The projecting shaft 401 at 4 both ends of rotor passes through rolling bearing or sleeve supporting.The rotor 4 has been internally embedded mouse cage
402.Spiral rib 403 is provided on the outer circle wall of the rotor 4.
The rotor 4 is located in the fluid cylinder 1, and the projecting shaft 401 of lower end is supported on the circular hole I2021 of the bottom cover 2
In.
The stator 5 is made of silicon steel sheet overlapping.The stator 5 includes outer cylinder 501 and inner cylinder 502.
The inner cylinder 502 is located inside the outer cylinder 501.It is disposed between the inner cylinder 502 and the outer cylinder 501 several
A magnetic pole 503.Winding 504 is wound on each magnetic pole 503.
6 through slot II5021 for running through 502 both ends of inner cylinder are evenly equipped on the inner wall of the inner cylinder 502.At adjacent two
On the inner wall of inner cylinder 502 corresponding to magnetic pole 503, a through slot II5021 is all had, is convenient for coiling winding 504.
The stator 5 is coated on the rotor 4, and is located in the fluid cylinder 1, and the positioning column 3 is connected through a screw thread
It is fixed on its lower end surface.
An internal channel is formed between the stator 5 and the rotor 4.One is formed between the stator 5 and the fluid cylinder 1
A outer tunnel.The stator 5 is supported by positioning column 3, forms the space for connecting internal channel and outer tunnel.
The winding leads 505 of the stator 5 are drawn by the through-hole II301 on the positioning column 3, and pass through the countersunk head
Hole 2022 is pierced by the bottom cover 2.
The top cover 6 includes stepped ring forging 601 and disk II602.
The disk II602 is located in the stepped ring forging 601, and end face center has circular hole II6021.The disk
II602 is by passing through spoke 603 in succession between the stepped ring forging 601.
The top cover 6 is mounted on the upper end of the stator 5.The projecting shaft 401 of 4 upper end of rotor is supported on the top cover
In 6 circular hole II6021.
The working cylinder 7 is cylindrical shape.The circumferential direction of the working cylinder 7 is evenly equipped with several through slots I701 and several through-holes
I702, middle groove I701 are located at the inner headed face of the working cylinder 7, and position is denoted as equilbrium position.
The working cylinder 7 is located in the fluid cylinder 1, and lower end is sleeved on the step of the stepped ring forging 601.The work
Make cylinder 7 equipped with magnetorheological fluid.
The piston component 8 is located in the working cylinder 7, and has gap between the working cylinder 7, and the gap is with work
Plug assembly 8 free movement and can be able to achieve subject to good guidance in working cylinder 7.
Being mounted on piston component 8 for the piston rod 9, can push piston component 8 to do reciprocal fortune in working cylinder 7
It is dynamic.
When applying electric excitation to the winding 504, using exchange electric excitation, rotating excitation field, magnetic are formed in the stator 5
Field rotation speed is determined that under rotating excitation field effect, the mouse cage 402 of the rotor 4 is cut by the electromagnetic excitation alternative frequency applied
It cuts the magnetic line of force and generates induced current by magneticaction, rotor 4 is driven to rotate.
When the rotor 4 rotation, the spiral rib 403 drives magnetorheological fluid to do rotational flow and axial direction in internal channel
Flowing, cocurrent this rotational flow and axially flow compound to outer tunnel, can effectively disperse the magnetic current that layering even settles
Become liquid.It is worth noting that the rotation direction of spiral rib 403 needs to be determined according to excitation sequence in stator 5.
When the piston component 8 is in equilbrium position, the magnetorheological fluid of outer tunnel is flowed to by the working cylinder 7 and institute
The gap between fluid cylinder 1 is stated, is flowed into inside working cylinder 7 by the through slot 701 and the through-hole I702, when the piston component
When 8 disengaging equilbrium positions pump, the magnetorheological fluid of outer tunnel is flowed to by the working cylinder 7 and the fluid cylinder 1
Between gap, flowed into inside working cylinder 7 by the through-hole I702, form flow circuits, to realize effective magnetorheological
Liquid redispersion.
When MR damper operates normally, it can change the excitation mode of winding 504 in stator 5 at this time, make its life
At uniform Distribution of Magnetic Field in the same direction, it will make full of consistent uniform magnetic field in internal channel, so that Effective Regulation piston component 8 is run
When magnetorheological damping power.
Preferably, the projecting shaft 401 at 4 both ends of rotor is made by sleeve supporting, axle sleeve of polytetrafluoroethylene (PTFE), just
In the friction for the projecting shaft 401 and top cover 6 and bottom cover 2 for reducing both ends.
Claims (6)
1. channel MR damper is set at a kind of bottom of band sedimentation Active dispersion devices, it is characterised in that: including the fluid cylinder
(1), bottom cover (2), positioning column (3), rotor (4), stator (5), top cover (6), working cylinder (7), piston component (8) and piston rod
(9)；
The fluid cylinder (1) is hollow cylinder, and the open-mouth of lower end has screw thread；
The upper end of the bottom cover (2) is annulus I (201)；Annulus I (201) outer wall has screw thread；Under the bottom cover (2)
End is disk I (202)；The end face center of the disk I (202) has circular hole I (2021)；On the end face of the disk I (202)
Equipped with several counter sinks (2022) for being in same circumference；
The upper end of the bottom cover (2) is mounted on the open-mouth of the fluid cylinder (1) lower end；
The positioning column (3) is mounted on the step of the counter sink (2022)；
The rotor (4) is cylindrical body, and the end face center at both ends has projecting shaft (401)；The rotor (4) has been internally embedded
Mouse cage (402)；Spiral rib (403) are provided on the outer circle wall of the rotor (4)；
The rotor (4) is located in the fluid cylinder (1), and the projecting shaft (401) of lower end is supported on the circular hole I of the bottom cover (2)
(2021) in；
The stator (5) includes outer cylinder (501) and inner cylinder (502)；
It is internal that the inner cylinder (502) is located at the outer cylinder (501)；It is disposed between the inner cylinder (502) and the outer cylinder (501)
Several magnetic poles (503)；Winding (504) are wound on each magnetic pole (503)；
The stator (5) is coated on the rotor (4), and is located in the fluid cylinder (1), and lower end is fixed on the positioning column
(3) on；
An internal channel is formed between the stator (5) and the rotor (4)；Shape between the stator (5) and the fluid cylinder (1)
At an outer tunnel；The stator (5) is supported by positioning column (3), forms the space for connecting internal channel and outer tunnel；
The top cover (6) includes stepped ring forging (601) and disk II (602)；
The disk II (602) is located in the stepped ring forging (601), and end face center has circular hole II (6021)；The circle
Disk II (602) is by passing through spoke (603) in succession between the stepped ring forging (601)；
The top cover (6) is mounted on the upper end of the stator (5)；The projecting shaft (401) of rotor (4) upper end is supported on described
In the circular hole II (6021) of top cover (6)；
The working cylinder (7) is cylindrical shape；The circumferential direction of the working cylinder (7) is evenly equipped with several through slots I (701) and several are logical
Hole I (702), middle groove I (701) are located at the inner headed face of the working cylinder (7), and position is denoted as equilbrium position；
The working cylinder (7) is located in the fluid cylinder (1), and lower end is sleeved on the step of the stepped ring forging (601)；It is described
Working cylinder (7) is equipped with magnetorheological fluid；
The piston component (8) is located in the working cylinder (7), and has gap between the working cylinder (7)；
The piston rod (9) is mounted on piston component (8), piston component (8) can be pushed to do in working cylinder (7) reciprocal
Movement；
When applying electric excitation to the winding (504), rotating excitation field, the mouse cage of the rotor (4) are formed in the stator (5)
(402) cutting magnetic line generates induced current by magneticaction, drives rotor (4) rotation；
When the rotor (4) rotation, the spiral rib (403) drives magnetorheological fluid to do rotational flow and axial direction in internal channel
Flowing, cocurrent is to outer tunnel.
When the piston component (8) is in equilbrium position, the magnetorheological fluid of outer tunnel is flowed to by the working cylinder (7) and institute
The gap between fluid cylinder (1) is stated, working cylinder (7) inside is flowed by the through slot (701) and the through-hole I (702), when described
When piston component (8) disengaging equilbrium position pumps, the magnetorheological fluid of outer tunnel is flowed to by the working cylinder (7)
With the gap between the fluid cylinder (1), it is internal that working cylinder (7) are flowed by the through-hole I (702).
2. channel MR damper is set at a kind of bottom of band sedimentation Active dispersion devices according to claim 1 or 2, special
Sign is: the rotor (4) is made by soft magnetic materials；
The stator (5) is made of silicon steel sheet overlapping.
3. channel MR damper, feature are set in a kind of bottom of band sedimentation Active dispersion devices according to claim 1
It is: is evenly equipped with several through slot II (5021) for running through inner cylinder (502) both ends on the inner wall of the inner cylinder (502)；Adjacent
Two magnetic poles (503) corresponding to inner cylinder (502) inner wall on, all have a through slot II (5021).
4. channel MR damper, feature are set in a kind of bottom of band sedimentation Active dispersion devices according to claim 1
It is: there are through-hole II (301) inside the positioning column (3)；The counter sink of the through-hole II (301) and the bottom cover (2)
(2022) it connects；
The winding leads (505) of the stator (5) are drawn by the through-hole II (301) on the positioning column (3), and by described
Counter sink (2022) is pierced by the bottom cover (2).
5. channel MR damper, feature are set in a kind of bottom of band sedimentation Active dispersion devices according to claim 1
Be: the projecting shaft (401) at rotor (4) both ends passes through rolling bearing or sleeve supporting.
6. channel MR damper, feature are set in a kind of bottom of band sedimentation Active dispersion devices according to claim 1
It is: is sealed between the fluid cylinder (1) and the bottom cover (2) by O-ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910116247.2A CN109826903A (en) | 2019-02-13 | 2019-02-13 | Set channel MR damper in a kind of bottom of band sedimentation Active dispersion devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910116247.2A CN109826903A (en) | 2019-02-13 | 2019-02-13 | Set channel MR damper in a kind of bottom of band sedimentation Active dispersion devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109826903A true CN109826903A (en) | 2019-05-31 |
Family
ID=66863734
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910116247.2A Pending CN109826903A (en) | 2019-02-13 | 2019-02-13 | Set channel MR damper in a kind of bottom of band sedimentation Active dispersion devices |
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| CN (1) | CN109826903A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110700020A (en) * | 2019-09-20 | 2020-01-17 | 南安市董山尾机械科技有限公司 | Rail vibration isolator with multi-dimensional power |
| CN111473071A (en) * | 2020-04-21 | 2020-07-31 | 龙岩学院 | Hydraulic cylinder speed regulation type magnetorheological fluid retarder |
| CN112483582A (en) * | 2019-09-11 | 2021-03-12 | 重庆户枢科技开发有限公司 | Magnetorheological fluid undercarriage buffer strut |
| CN113606276A (en) * | 2021-08-12 | 2021-11-05 | 重庆大学 | Circumferential array spiral groove piston anti-settling magnetorheological damper |
| US20230160455A1 (en) * | 2020-06-29 | 2023-05-25 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Hybrid damping module, vibration suppression device, vibration suppression method, and wind turbine set |
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| CN112483582A (en) * | 2019-09-11 | 2021-03-12 | 重庆户枢科技开发有限公司 | Magnetorheological fluid undercarriage buffer strut |
| CN110700020A (en) * | 2019-09-20 | 2020-01-17 | 南安市董山尾机械科技有限公司 | Rail vibration isolator with multi-dimensional power |
| CN110700020B (en) * | 2019-09-20 | 2021-03-02 | 海门市彼维知识产权服务有限公司 | Rail vibration isolator with multi-dimensional power |
| CN111473071A (en) * | 2020-04-21 | 2020-07-31 | 龙岩学院 | Hydraulic cylinder speed regulation type magnetorheological fluid retarder |
| US20230160455A1 (en) * | 2020-06-29 | 2023-05-25 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Hybrid damping module, vibration suppression device, vibration suppression method, and wind turbine set |
| CN113606276A (en) * | 2021-08-12 | 2021-11-05 | 重庆大学 | Circumferential array spiral groove piston anti-settling magnetorheological damper |
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