CN110145566A - A kind of revolving type magnetic rheologic damper and its working method of ball-screw-transmission - Google Patents
A kind of revolving type magnetic rheologic damper and its working method of ball-screw-transmission Download PDFInfo
- Publication number
- CN110145566A CN110145566A CN201910347534.4A CN201910347534A CN110145566A CN 110145566 A CN110145566 A CN 110145566A CN 201910347534 A CN201910347534 A CN 201910347534A CN 110145566 A CN110145566 A CN 110145566A
- Authority
- CN
- China
- Prior art keywords
- ball
- screw
- magnetorheological fluid
- rotating disk
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid-Damping Devices (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a kind of revolving type magnetic rheologic dampers of ball-screw-transmission, including circular excitation formula magnetic pole, dish type magnetorheological fluid cavity, the dish type magnetorheological fluid cavity is placed in inside circular excitation formula magnetic pole, the circular excitation formula magnetic pole has the iron core winding of 4 Circle-Array column distribution, and multistage adjustable operating fields can be provided for the intracorporal magnetorheological fluid of dish type magnetorheological fluid chamber；It further include ball nut, ball-screw, rotating disk, swivel bearing and thrust bearing, the ball nut and rotating disk are affixed, the rotating disk is mounted in dish type magnetorheological fluid cavity, the rolling bearing connection dish type magnetorheological fluid cavity and ball nut, guarantee the relative rotation of the two, the ball-screw passes through ball nut, cooperates the rotary motion of rolling bearing and thrust bearing by the transform linear motion of lead screw for rotating disk.The revolving type magnetic rheologic damper of ball-screw-transmission of the present invention, has that durability is good, adjustability coefficients is high, high feature of contributing.
Description
Technical field
The invention belongs to field of vibration control, and in particular to a kind of revolving type magnetic rheologic damping of ball-screw-transmission
Device.
Background technique
Magnetorheological (MR) damper is to utilize the magneto-rheological characteristic of magnetorheological fluid (magnetorheological fluid) and develop a kind of novel
Intelligent vibration control device, it is rapid with response, consume energy low, damping force continuously adjustable, moderate cost, zmodem etc. are excellent
Point has been widely used in the intelligent vibration damping control in the fields such as civil engineering, space flight and aviation, automotive suspension at present.Already present magnetic
In rheological damper, according to the stress and flow feature of magnetorheological fluid, MR fluid damper can be divided into valve type, shearing and cut
Cut valve type.
Most common form is shearing valve type MR damper, and the cavity of closing magnetorheological fluid can divide by boundary of piston
For compression chamber and expansion chamber, damper power output magnetorheological fluid under powerful pressure difference flows through service aisle and the resistance that generates
Power.It is found in the research of practical semi- active control and engineer application, be possible to can be from for the clear liquid of magnetorheological fluid under huge pressure difference
It is oozed out at the lantern ring of power output bar periphery, outside air can also enter in damper cavity.The loss of clear liquid in magnetorheological fluid
So that its mobility is deteriorated, even consolidates, so that the adjustability coefficients of MR damper is greatly reduced, to lose it as intelligence vibration
The superiority of dynamic control device reduces the energy consumption effect of damper in addition, the entrance of air will cause necking phenomenon.Analyze this
The power output of shearing valve type damper is it is found that shearing valve type MR damper has the ingredient of two kinds of power of shearing and valve type concurrently, and valve type goes out
Power accounts for major part.In conjunction with existing research result it is found that shearing power output is higher than the adjustability coefficients that valve type is contributed under the same terms
Several times are (about), therefore shearing MR damper can more play the tunable performance of magnetorheological fluid, but due to general
Shearing MR damper maximum output is smaller, fails to be widely popularized.
The revolution shearing type MR damper of ball-screw-transmission proposed by the present invention, building ring of the magnetorheological fluid without pressure difference
Fluid-tight Problem of Failure has been evaded in border, improves the durability of MR damper, reduces maintenance cost.And utilize the power of ball-screw
Amplification effect make revolution shearing type MR damper take into account the characteristic that adjustability is good, maximum output is high.By matching different marks
Number magnetorheological fluid and the ball-screws of different drive ratios can be adapted for the semi- active controls of various structures.The invention structure is tight
It gathers, durability is good, applied widely, therefore great future in engineering applications.
Summary of the invention
The purpose of the present invention is in view of the above problems, provide one kind to give full play to the variable performance of magnetorheological fluid
, the MR damper of the ball-screw-transmission reliable and stable, durability is good.The MR damper changes traditional magnetorheological
The working method of damper converts the translation displacements of structure to by ball-screw transmission mechanism the rotation of rotating disk, excitation
Coil and magnetic yoke are wrapped in dish type magnetorheological fluid containment portion, to provide effective magnetic induction intensity, to guarantee damper
Maximum output and adjustability coefficients.
In order to achieve the above technical purposes, the present invention adopts the following technical scheme:
A kind of revolving type magnetic rheologic damper of ball-screw-transmission, comprising:
Shell, shell have hollow cavity, are equipped with circular excitation formula magnetic pole in hollow cavity；Dish type magnetic
Rheology sap cavity body is arranged in the inside of the circular excitation formula magnetic pole, is full of magnetorheological fluid in dish type magnetorheological fluid cavity；
The shell, it is relatively affixed between circular excitation formula magnetic pole and dish type magnetorheological fluid cavity three；
One rotating disk is arranged in the dish type magnetorheological fluid cavity full of magnetorheological fluid, and rotating pan is to being parallel to annular
The magnetic line of force direction of excitation-type magnetic pole main field；
One ball screw, ball screw one end are located inside hollow cavity behind the axle center of shell, the other end
Setting outside shell is extended to, ball nut is connected on the ball screw inside hollow cavity, it is described
It is fixedly connected between ball nut and the rotating disk；
A pair of rolling bearing with lantern ring is equipped between the axis hole of dish type magnetorheological fluid cavity and the outer wall of ball nut；
A pair of of pushing tow bearing is provided on the outside of the rolling bearing；
It is rotation of the rotating disk in dish type magnetorheological fluid cavity that ball screw, which makees lineal extrusion conversion of motion along axle center,.
The annular circular excitation formula magnetic pole is made of electrical pure iron, around the core portion cooperation penetrated through between two magnetic poles
Winding coil play excitation effect, one week of annular circular excitation formula magnetic pole has 4 iron cores and winding combination to be uniformly distributed, and puts down
Two capable magnetic poles are used to guide magnetic circuit as magnetic yoke.
Annular magnetic-type magnetic pole and the dish type magnetorheological fluid cavity of encouraging is assembled by multiple seperated units.
The rotating disk is equipped with the hole being evenly arranged.
Further include two power output bars, is the first power output bar and the second power output bar respectively, wherein the first power output bar and stretching hinder
Ball screw one end of Buddhist nun's device shell connects, the shell connection adjacent with the ball screw other end of the second power output bar, the
Two power output bars have hollow directed cavity, and the hollow directed cavity provides space for ball-screw.
A kind of working method of the revolving type magnetic rheologic damper based on the ball-screw-transmission of the present invention goes out when first
When power bar moves along a straight line, ball-screw moves therewith, ball nut and thrust bearing cooperating, by ball-screw
Linear motion be converted to the rotation of rotating disk, when rotating disk can be cut when dish type magnetorheological fluid inside cavity rotates movement
The magnetorheological fluid of two sides is cut, rotating disk is by the moment of resistance along own layer normal direction normal direction, this torque is along ball nut and roller bearing
Lead screw is transmitted to power output bar.
The power output F of the power output bar is obtained by following formula:
F=(Tτ+Tη)·n
In formula, TτIndicate the torque that Shear Yield Stress of Magnetorheological Fluids generates, TηIndicate the power that magnetorheological fluid viscosity generates
Square, n indicate the transmission ratio of ball screw framework.
The torque T for indicating Shear Yield Stress of Magnetorheological Fluids and generatingτWith the torque T for indicating that magnetorheological fluid viscosity generatesη
It is obtained respectively by following formula:
In formula, D indicates that the outer diameter of rotating disk, d indicate the internal diameter of rotating disk, τyIndicate that the shear yielding of magnetorheological fluid is strong
Degree, v indicate the translational velocity of damper power output bar, and η indicates the viscosity of magnetorheological fluid, and h indicates rotating disk away from dish type magnetorheological fluid
The clear distance of cavity, x indicate distance of the certain point apart from disk center in rotating disk.
Helpfulness of the invention is:
1. revolution shearing type MR damper is substantially a kind of damper of no pressure difference, dish type magnetorheological fluid inside cavity is not
The case where generating higher or lower than external atmosphere pressure substantially increases the durability of damper, reduces maintenance cost；Cooperation
Ball-screw transmission mechanism compensates for the lesser disadvantage of the shearing MR damper power output of tradition, so that the invention has both adjustability
It is good, high advantage of contributing.
2. circular excitation formula magnetic pole work magnetic circuit proposed by the present invention is simple, more iron cores and winding combination cooperate various control
Strategy can achieve higher controllability, and to meet various structures half, actively the needs of of control is moved in shake (vibration).
3. in the present invention, by the gearing factor for changing ball-screw, thus it is possible to vary the maximum output of MR damper.
4. structure of the invention is compact, strong operability, applied widely, great future in engineering applications.
Detailed description of the invention
Fig. 1 is the revolving type magnetic rheologic damper appearance diagram of ball-screw-transmission of the present invention；
Wherein, 5, ball screw；8, shell；9a, the first power output bar；9b, the second power output bar；
Fig. 2 is the revolving type magnetic rheologic damper schematic internal view of ball-screw-transmission of the present invention；
Wherein, 1, circular excitation formula magnetic pole；2, dish type magnetorheological fluid cavity；6, rolling bearing；7, thrust bearing；8, it damps
Device shell；
Fig. 3 is the revolving type magnetic rheologic damper decomposition diagram of ball-screw-transmission of the present invention；
Wherein, 3, rotating disk；4, ball nut；
Fig. 4 is the revolving type magnetic rheologic damper circular excitation formula magnetic pole schematic diagram of ball-screw-transmission of the present invention.
Wherein, 1a, winding coil；1b, magnetic yoke.
Fig. 5 is magnetic pole and magnetic field schematic diagram of the present invention；
Fig. 6 is scheme of installation of the present invention；
Wherein, 10, cable-stayed bridge cable；11, damper.
Specific embodiment
With reference to the accompanying drawings and examples, technical solution of the present invention is described in detail.
As shown in figures 1-4, a kind of rotary MR damper of ball-screw-transmission of the present invention, including circular excitation formula magnetic
Pole 1, dish type magnetorheological fluid cavity 2, rotating disk 3, ball nut 4, ball-screw 5, rolling bearing 6, thrust bearing 7, damper
Shell 8, bar 9 of contributing, 1a are winding coil, and 1b is magnetic yoke, and ball-screw 5 passes through rolling bearing 6, and rotating disk 3 is fixed in rolling
Pearl bearing 5, the first power output bar 9a are connected in ball-screw, and the second power output bar 9b is connect with damper outer wall.
When the first power output bar 9a moves along a straight line, ball-screw 5 moves therewith, ball nut 4 and thrust axis
7 cooperatings are held, the linear motion of ball-screw 5 is converted to the rotation of rotating disk 3, when rotating disk 3 is in dish type magnetorheological fluid
The magnetorheological fluid of two sides can be sheared when rotating movement inside cavity 2, rotating disk 3 is by the resistance along own layer normal direction normal direction
Torque, this torque are transmitted to power output bar 9 along ball nut 4 and roller screw 5.
A kind of rotary MR damper of ball-screw-transmission of the present invention, analyzes the power output of damper
F=(Tτ+Tη)·n
TτIndicate the torque that Shear Yield Stress of Magnetorheological Fluids generates, TηIndicate the torque that magnetorheological fluid viscosity generates, n table
Show the transmission ratio of ball screw framework.
D indicates that the outer diameter of rotating disk, d indicate the internal diameter of rotating disk, τyIndicate the shear yield strength of magnetorheological fluid, v table
Show the translational velocity of damper power output bar, η indicates the viscosity of magnetorheological fluid, and h indicates rotating disk away from dish type magnetorheological fluid cavity
Clear distance, x indicate distance of the certain point apart from disk center in rotating disk.
β indicates the adjustable multiple of the rotary magneto-rheological damper power output of ball-screw conduction.It can be according to above 2 formula to this hair
The revolving type magnetic rheologic damper of bright ball-screw-transmission does Preliminary design.
Wherein, rolling bearing 6 is used to guarantee the sliding opposite with dish type magnetorheological fluid cavity of ball nut 4, and dish type is magnetorheological
Each rigging position of sap cavity body 2 should ensure that corresponding closed grade.
The winding coil 1a of circular excitation formula magnetic pole 1 is arranged between two parallel magnetic yoke 1b, and winding coil 1a is powered on
Magnetomotive force has been motivated, can have been formed inside circular excitation formula magnetic pole 1 close to even strong magnetic field, be the magnetic inside magnetorheological cavity 2
Rheology liquid provides operating fields, and magnetic induction intensity can be determined by being passed through size of current.
Obviously, the above embodiment is merely an example for clearly illustrating the present invention, and is not to of the invention
The restriction of embodiment.For those of ordinary skill in the art, it can also be made on the basis of the above description
Its various forms of variation or variation.There is no necessity and possibility to exhaust all the enbodiments.And these belong to this hair
The obvious changes or variations that bright spirit is extended out are still in the protection scope of this invention.
Claims (8)
1. a kind of revolving type magnetic rheologic damper of ball-screw-transmission, it is characterised in that: include:
Shell, shell have hollow cavity, are equipped with circular excitation formula magnetic pole in hollow cavity；
Dish type magnetorheological fluid cavity is arranged in the inside of the circular excitation formula magnetic pole, is full of magnetic in dish type magnetorheological fluid cavity
Rheology liquid；
The shell, it is relatively affixed between circular excitation formula magnetic pole and dish type magnetorheological fluid cavity three；One rotation
Disk is arranged in the dish type magnetorheological fluid cavity full of magnetorheological fluid, and rotating pan is to being parallel to the main magnetic of circular excitation formula magnetic pole
The magnetic line of force direction of field；
One ball screw, ball screw one end are located inside hollow cavity behind the axle center of shell, and the other end extends
It is arranged outside to shell, ball nut, the ball is connected on the ball screw inside hollow cavity
It is fixedly connected between nut and the rotating disk；
A pair of rolling bearing with lantern ring is equipped between the axis hole of dish type magnetorheological fluid cavity and the outer wall of ball nut；It is described
A pair of of pushing tow bearing is provided on the outside of rolling bearing；
It is rotation of the rotating disk in dish type magnetorheological fluid cavity that ball screw, which makees lineal extrusion conversion of motion along axle center,.
2. the revolving type magnetic rheologic damper of ball-screw-transmission according to claim 1, it is characterised in that: the annular
Circular excitation formula magnetic pole is made of electrical pure iron, and the winding coil performance around core portion cooperation penetrated through between two magnetic poles is encouraged
Magnetic action, one week of annular circular excitation formula magnetic pole have 4 iron cores and winding combination to be uniformly distributed, and two parallel magnetic poles are as magnetic
Yoke is used to guide magnetic circuit.
3. the revolving type magnetic rheologic damper of ball-screw-transmission according to claim 1, it is characterised in that: described to encourage ring
Shape magnetic-type magnetic pole and dish type magnetorheological fluid cavity are assembled by multiple seperated units.
4. the revolving type magnetic rheologic damper of ball-screw-transmission according to claim 1, it is characterised in that: the rotation
Disk is equipped with the hole being evenly arranged.
5. the revolving type magnetic rheologic damper of ball-screw-transmission according to claim 1, it is characterised in that: further include two
A power output bar is the first power output bar and the second power output bar respectively, wherein the first power output bar and the ball wire for stretching out shell
The connection of bar one end, the shell connection adjacent with the ball screw other end of the second power output bar, the second power output bar has hollow
Directed cavity, the hollow directed cavity provide space for ball-screw.
6. a kind of work side of the revolving type magnetic rheologic damper based on the ball-screw-transmission any in Claims 1 to 5
Method, it is characterised in that: when the first power output bar 9 moves along a straight line, ball-screw moves therewith, ball nut and thrust
The linear motion of ball-screw, is converted to the rotation of rotating disk, when rotating disk is in the magnetorheological sap cavity of dish type by bearing fit work
Internal portion can shear the magnetorheological fluid of two sides when rotating movement, rotating disk is by the resistance along own layer normal direction normal direction
Square, this torque are transmitted to power output bar along ball nut and roller screw.
7. the working method of the revolving type magnetic rheologic damper of ball-screw-transmission according to claim 6, it is characterised in that:
The power output F of the power output bar is obtained by following formula:
F=(Tτ+Tη)·n
In formula, TτIndicate the torque that Shear Yield Stress of Magnetorheological Fluids generates, TηIndicate the torque that magnetorheological fluid viscosity generates, n table
Show the transmission ratio of ball screw framework.
8. the working method of the revolving type magnetic rheologic damper of ball-screw-transmission according to claim 7, it is characterised in that:
The torque T for indicating Shear Yield Stress of Magnetorheological Fluids and generatingτWith the torque T for indicating that magnetorheological fluid viscosity generatesηRespectively by with
Lower formula obtains:
In formula, D indicates that the outer diameter of rotating disk, d indicate the internal diameter of rotating disk, τyIndicate the shear yield strength of magnetorheological fluid, v table
Show the translational velocity of damper power output bar, η indicates the viscosity of magnetorheological fluid, and h indicates rotating disk away from dish type magnetorheological fluid cavity
Clear distance, x indicate distance of the certain point apart from disk center in rotating disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910347534.4A CN110145566B (en) | 2019-04-28 | 2019-04-28 | Rotary magnetorheological damper driven by ball screw and working method of rotary magnetorheological damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910347534.4A CN110145566B (en) | 2019-04-28 | 2019-04-28 | Rotary magnetorheological damper driven by ball screw and working method of rotary magnetorheological damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110145566A true CN110145566A (en) | 2019-08-20 |
| CN110145566B CN110145566B (en) | 2020-07-07 |
Family
ID=67593967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910347534.4A Active CN110145566B (en) | 2019-04-28 | 2019-04-28 | Rotary magnetorheological damper driven by ball screw and working method of rotary magnetorheological damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110145566B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113369968A (en) * | 2021-04-30 | 2021-09-10 | 西安交通大学 | Damping device and method for inhibiting cutting vibration of machine tool spindle and machine tool spindle |
| CN115013467A (en) * | 2022-04-19 | 2022-09-06 | 大连海事大学 | Spherical magnetorheological damper |
| CN115163723A (en) * | 2022-08-11 | 2022-10-11 | 甘肃盛宏建筑工程有限责任公司 | Magnetorheological variable damping vibration attenuation energy dissipation device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040093612A1 (en) * | 2002-08-30 | 2004-05-13 | Tatung Co., Ltd. | Auto-balancing device for the motor of a CD-ROM player |
| JP2007002988A (en) * | 2005-06-27 | 2007-01-11 | Uchiya Thermostat Kk | Control valve |
| CN103962883A (en) * | 2014-05-30 | 2014-08-06 | 上海理工大学 | Dynamic vibration-absorption turning tool based on extruding working mode of magnetorheological fluid |
| CN104963982A (en) * | 2015-06-19 | 2015-10-07 | 中国人民解放军装甲兵工程学院 | Rotary extrusion type magnetorheological damper |
| CN106884926A (en) * | 2017-04-11 | 2017-06-23 | 重庆大学 | The selectable longitudinal linear vibration restraining device of passively/active control |
| CN108278320A (en) * | 2018-01-19 | 2018-07-13 | 东北大学 | A kind of big output method of MR damper Combined-operating mode and damper |
| CN208703018U (en) * | 2018-07-02 | 2019-04-05 | 浙江大学 | Adjustable inertia mass damper |
-
2019
- 2019-04-28 CN CN201910347534.4A patent/CN110145566B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040093612A1 (en) * | 2002-08-30 | 2004-05-13 | Tatung Co., Ltd. | Auto-balancing device for the motor of a CD-ROM player |
| JP2007002988A (en) * | 2005-06-27 | 2007-01-11 | Uchiya Thermostat Kk | Control valve |
| CN103962883A (en) * | 2014-05-30 | 2014-08-06 | 上海理工大学 | Dynamic vibration-absorption turning tool based on extruding working mode of magnetorheological fluid |
| CN104963982A (en) * | 2015-06-19 | 2015-10-07 | 中国人民解放军装甲兵工程学院 | Rotary extrusion type magnetorheological damper |
| CN106884926A (en) * | 2017-04-11 | 2017-06-23 | 重庆大学 | The selectable longitudinal linear vibration restraining device of passively/active control |
| CN108278320A (en) * | 2018-01-19 | 2018-07-13 | 东北大学 | A kind of big output method of MR damper Combined-operating mode and damper |
| CN208703018U (en) * | 2018-07-02 | 2019-04-05 | 浙江大学 | Adjustable inertia mass damper |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113369968A (en) * | 2021-04-30 | 2021-09-10 | 西安交通大学 | Damping device and method for inhibiting cutting vibration of machine tool spindle and machine tool spindle |
| CN115013467A (en) * | 2022-04-19 | 2022-09-06 | 大连海事大学 | Spherical magnetorheological damper |
| CN115013467B (en) * | 2022-04-19 | 2023-10-24 | 大连海事大学 | Spherical magneto-rheological damper |
| CN115163723A (en) * | 2022-08-11 | 2022-10-11 | 甘肃盛宏建筑工程有限责任公司 | Magnetorheological variable damping vibration attenuation energy dissipation device |
| CN115163723B (en) * | 2022-08-11 | 2023-06-09 | 甘肃盛宏建筑工程有限责任公司 | Magneto-rheological variable damping vibration attenuation energy consumption device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110145566B (en) | 2020-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110145566A (en) | A kind of revolving type magnetic rheologic damper and its working method of ball-screw-transmission | |
| CN112805489B (en) | Double-rod piezoelectric-magnetorheological composite intelligent damper and control method thereof | |
| CN107191530B (en) | A kind of twin coil piston magneto-rheological liquid shimmy-damper | |
| CN104963986B (en) | A kind of MR damper with mixed flow dynamic formula fluid course | |
| CN109404476B (en) | Embedded multi-channel bypass flow channel magnetorheological damper | |
| CN101749358A (en) | Damping force adjustable permanent magnet type magnetic current variable damper | |
| CN205315604U (en) | Built -in magnetic current becomes magnetic current change attenuator that valve carries out control of damping performance | |
| CN204436910U (en) | A kind of asymmetric hydraulic efficiency servo-valve | |
| CN113007262A (en) | Variable gap order-changing type magneto-rheological damper | |
| CN108302152B (en) | Magnetorheological damper with complex liquid flow channel structure | |
| CN110332275B (en) | Full-channel shear extrusion mixed mode magnetorheological damper and control method thereof | |
| CN201714899U (en) | Adaptive dual control magnetorheological damper | |
| CN106015436B (en) | A kind of rank becomes magneto-rheological damper | |
| CN103615494A (en) | Damper used for vibration reduction of pipeline | |
| CN208331046U (en) | A kind of New Rotary magnetic rheological brake | |
| CN101832356B (en) | Self-adaptive double control magneto-rheological damper | |
| CN101832355A (en) | Double-out-rod adaptive double-control magneto-rheological damper | |
| CN106884925B (en) | A kind of rack driving pattern dish MR damper | |
| CN209799054U (en) | Lead extrusion magnetorheological combined energy consumption device | |
| CN105782279A (en) | Damping type magnetorheological clutch | |
| CN209046445U (en) | Band-type brake structure and directly drive electric rotary machine | |
| CN102287479A (en) | Double-rod magnetorheological grease damper | |
| CN203488625U (en) | Non-electrified magnetorheological liquid damper | |
| CN107605847B (en) | The gas spring device of linear motor driving | |
| CN207499568U (en) | The viscous and difunctional damper of friction energy-dissipating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |