CN108895112A - A kind of MR fluid shock absorber - Google Patents
A kind of MR fluid shock absorber Download PDFInfo
- Publication number
- CN108895112A CN108895112A CN201810743125.1A CN201810743125A CN108895112A CN 108895112 A CN108895112 A CN 108895112A CN 201810743125 A CN201810743125 A CN 201810743125A CN 108895112 A CN108895112 A CN 108895112A
- Authority
- CN
- China
- Prior art keywords
- cylinder barrel
- shock absorber
- sector gear
- generator
- fluid shock
- 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.)
- Pending
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
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
-
- 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
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/3405—Throttling passages in or on piston body, e.g. slots
-
- 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
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/504—Inertia, i.e. acceleration,-sensitive means
Abstract
The invention discloses a kind of MR fluid shock absorbers, including MR fluid shock absorber and self-generating system.Wherein, MR fluid shock absorber includes piston rod, piston body assembly, cylinder barrel, damping hole, magnetorheological fluid；Self-generating system includes generator, sector gear, electromagnetic coil.Rack gear is bolted on piston rod, and sector gear is engaged with rack, and sector gear connects generator, generator both ends extraction wire by box coupling, and connection electromagnetic coil forms closed circuit.Electromagnetic coil is uniformly looped around around cylinder barrel.On rough road when driving, the rack gear on piston rod does linear reciprocating motion and drives sector gear rotation automobile, and sector gear drives generator rotation, to generate certain electric current.Size of current influences the viscosity of magnetorheological fluid, and then changes the size of damping force.The present invention has many advantages, such as that compact-sized, small in size, at low cost, energy saving and damping adaptive is adjusted.
Description
Technical field
The present invention relates to vehicle shock absorber field, especially a kind of MR fluid shock absorber.
Background technique
Automotive suspension is the gentle important feature brought from ground shock power of automobile transmitting torque, for promoting car steering
Comfortableness and security play a significant role.Damper is the important component of automotive suspension, is had to the performance of suspension important
It influences.
Damper can be divided into hydraulic telescopic damper, Electrorheological fluid vibration damper and magnetic current flowing deformation vibration-damping from working media
Device.Wherein MR fluid shock absorber has tended to be mature, but still has many problems, such as coil heat dissipation problem, magnetic current
The problems such as becoming liquid higher cost and energy dissipation.
Up to the present, the patent that application publication number is CN106763455A proposes the pneumatic spring that one kind can generate electricity can
Damping changing impact damper assembly, the damper, by the electrical equipment in power storage or supply vehicle, need complexity by circuit control
Control circuit, be not easy to realize；The patent that authorization publication No. is CN205896021U proposes the strong of ungulate iron core built in one kind
Magnetorheological fluid shock absorber is damped, which is equipped with magnetic field generating assembly in internal piston, and maintenance and disassembly are inconvenient and easy
Magnetorheological fluid is caused to leak；In addition traditional MR fluid shock absorber needs external power supply, does not account for the recycling of vibrational energy
It utilizes.
Summary of the invention
For the above-mentioned problems in the prior art, the present invention provides a kind of MR fluid shock absorbers, can basis
Road conditions change magnetorheological fluid viscosity, and then change damping force, reach the requirement of vehicle running smoothness and comfort.
For achieving the above object, the technical scheme adopted by the invention is as follows：A kind of MR fluid shock absorber, including cylinder
Cylinder, the cylinder barrel top are equipped with piston guide and seal assembly and blanking cover, are equipped with piston body assembly, the piston in the cylinder barrel
Piston rod is installed, the piston rod is also cross the piston guide and seal assembly and blanking cover, the cylinder barrel on body assembly
It is provided with magnetorheological fluid, uniform winding has electromagnetic coil outside the cylinder barrel.
In above scheme, rack gear is installed on the piston rod, the rack gear is engaged with sector gear；The sector gear
Generator is connected with using box coupling.
In above scheme, the generator is electrically connected with the electromagnetic coil.
In above scheme, the piston body assembly is equipped with damping hole, and the electromagnetic coil uniform winding is described in the face
On cylinder barrel where damping hole.
In above scheme, damper connector is equipped with below the cylinder barrel, the damper connector is equipped with a through-hole.
Compared with prior art, beneficial effects of the present invention：（1）The present invention is by converting the up and down motion of piston rod to
The electric energy of generator recycles, vibrational energy is converted into electric energy.（2）By the way that generator to be connect with electromagnetic coil, realize
Self-generating system.（3）The present invention in cylinder barrel by being arranged magnetorheological fluid, by changing the electromagnetic coil being wrapped on cylinder barrel
The automatic adjusument of damping force may be implemented in electric current.（4）By will open up several damping holes on piston body assembly, and by electromagnetic wire
Circle is arranged near damping hole, when magnetorheological fluid is empty by the lesser damping of cross-sectional aperture, may be implemented with few electric energy shadow
The amplitude for ringing the total integral vertical tremor of piston body, has saved the energy.
Detailed description of the invention
Fig. 1 is a kind of MR fluid shock absorber structure chart of the invention；
Fig. 2 is the workflow schematic diagram of MR fluid shock absorber under different road conditions of the invention；
Fig. 3 is gear and rack teeth mechanism schematic diagram of the present invention；
Wherein：1- sector gear；2- generator；3- cylinder barrel；4- epicoele；5- valve block a；6- damping hole；7- electromagnetic coil；8- is led
Line；9- damper connector；10- rack gear；11- fixing bolt；12- piston guide and seal assembly；13- magnetorheological fluid；14-
Blanking cover；15- piston rod；16- piston body assembly；17- valve block b；18- cavity of resorption.
Specific embodiment
Present invention will be further explained with reference to the attached drawings and specific examples, but protection scope of the present invention is simultaneously
It is without being limited thereto.
As shown in figures 1 and 3, a kind of MR fluid shock absorber of the invention is by MR fluid shock absorber and self-generating system
Composition；MR fluid shock absorber includes piston rod 15, piston body assembly 16, cylinder barrel 3, epicoele 4, cavity of resorption 18, damping hole 6, valve block
A5 and valve block b17；Self-generating system includes generator 2, sector gear 1, electromagnetic coil 7, rack gear 10, fixing bolt 11 and conducting wire
8。
15 end of piston rod processes the shaft shoulder and screw thread, and nut uses to be threadedly coupled with piston rod 15 consolidates piston body assembly 16
It is scheduled on 15 shaft shoulder of piston rod, valve block a5 and valve block b17 is respectively equipped on piston body assembly 16, has damping on piston body assembly 16
Hole 6；Cylinder barrel 3 is No. 45 steel cylinder thin wall typed structures, and the upper end is blocked with blanking cover 14；Pore, piston rod are opened up among blanking cover 14
15 pass through, and piston guide and seal assembly 12 closely cover and realize guiding and sealing on the piston rod of inner cylinder section.
It is opened on the piston rod 15 there are two threaded hole, rack gear 10 is mounted on piston rod 15 with fixing bolt 11；Rack gear
10 engage with sector gear 1；Sector gear 1 connects generator 2 using box coupling, between sector shaft and generator shaft
It keeps lubricating.
Generator 2 selects miniature light structures, is fixed on vehicle body with the mode of clamping；2 both ends contact of generator is drawn
Conducting wire 8, connection electromagnetic coil 7 form closed circuit.Electromagnetic coil 7 is uniformly looped around around cylinder barrel 3, and uses insulating tape
Package.
Working principle of the present invention is as follows：As shown in Fig. 2, when automobile on road when driving, shock absorber piston rod 15 exists
Vertical direction moves reciprocatingly, and the rack gear 10 being then fixed on damper drives sector gear 1 to do oscillating traverse motion, drives
Generator 2 rotates, and generates certain electric current, and electric current flows into coil 7 by conducting wire 8, and then 7 surrounding of coil generates certain magnetic
, since electromagnetic coil 7 is uniformly looped around the coil 7 being then powered 3 on cylinder barrel always and influences the magnetic field in cylinder barrel 3, to change
The viscosity for becoming magnetorheological fluid 13, generates different damping forces.Electromagnetic coil 7 is by chance especially arranged in damping in the present embodiment
Around hole 6, when changing the magnetorheological fluid 13 after viscosity by damping hole 6, its resistance is further amplified, and can more be saved
About electric energy consumed by electromagnetic coil 7.When the road conditions of running car are poor, body vibrations are more violent, the piston on damper
15 movement velocity of bar is also accelerated, then the electric current that generator 2 generates is bigger, 6 ambient magnetic field strength of damping hole is stronger, so that magnetic
13 retrogradation of magnetorheological fluid near is close, to increase the damping force that magnetorheological fluid 13 flows through damping hole 6；When running car
When road conditions are preferable, body vibrations are unobvious, and the piston rod 15 on damper does slight reciprocating motion in the vertical direction, then
The electric current that generator 2 generates is smaller, and 6 ambient magnetic field strength of damping hole is weaker, so that the magnetorheological fluid 13 near magnetic field becomes dilute
It dredges, so that the damping force that magnetorheological fluid 13 flows through damping hole 6 becomes smaller.
Embodiment described above is the preferred embodiments of the present invention, but present invention is not limited to the embodiments described above,
Any conspicuous improvement that without departing from the essence of the present invention, those skilled in the art can make,
Replacement or modification all belongs to the scope of protection of the present invention.
Claims (5)
1. a kind of MR fluid shock absorber, including cylinder barrel（3）, the cylinder barrel（3）Top is equipped with piston guide and seal assembly
（12）And blanking cover（14）, the cylinder barrel（3）It is interior to be equipped with piston body assembly（16）, the piston body assembly（16）On piston is installed
Bar（15）, the piston rod（15）Also cross the piston guide and seal assembly（12）And blanking cover（14）, which is characterized in that
The cylinder barrel（3）It is provided with magnetorheological fluid（13）, the cylinder barrel（3）External uniform winding has electromagnetic coil（7）.
2. a kind of MR fluid shock absorber according to claim 1, which is characterized in that the piston rod（15）On be equipped with
Rack gear（10）, the rack gear（10）With sector gear（1）Engagement；The sector gear（1）Hair is connected with using box coupling
Motor（2）.
3. a kind of MR fluid shock absorber according to claim 2, which is characterized in that the generator（2）With the electricity
Magnetic coil（7）Electrical connection.
4. a kind of MR fluid shock absorber according to claim 1 or 2 or 3, which is characterized in that the piston body assembly
（16）It is equipped with damping hole（6）, the electromagnetic coil（7）Uniform winding damping hole described in face（6）The cylinder barrel at place（3）
On.
5. a kind of MR fluid shock absorber according to claim 1 or 2 or 3, which is characterized in that the cylinder barrel（3）Lower section
Equipped with damper connector（9）, the damper connector（9）It is equipped with a through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810743125.1A CN108895112A (en) | 2018-07-09 | 2018-07-09 | A kind of MR fluid shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810743125.1A CN108895112A (en) | 2018-07-09 | 2018-07-09 | A kind of MR fluid shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108895112A true CN108895112A (en) | 2018-11-27 |
Family
ID=64348585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810743125.1A Pending CN108895112A (en) | 2018-07-09 | 2018-07-09 | A kind of MR fluid shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108895112A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021012578A1 (en) * | 2019-07-22 | 2021-01-28 | 江苏科技大学 | Self-adaption variable damping vortex-induced vibration energy conversion device |
| CN114412950A (en) * | 2021-12-13 | 2022-04-29 | 重庆大学 | Multistage excitation dual-cylinder magnetorheological damper and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2828438Y (en) * | 2005-10-24 | 2006-10-18 | 河北工业大学 | Adaptive vibration damper based on current converter |
| JP2007303581A (en) * | 2006-05-12 | 2007-11-22 | Kayaba Ind Co Ltd | Magnetic viscous fluid shock absorber |
| CN103306393A (en) * | 2012-03-15 | 2013-09-18 | 哈尔滨工业大学 | Driving energy self-supplied magnetorheological damper |
| CN104963983A (en) * | 2015-05-14 | 2015-10-07 | 山东理工大学 | Coil externally-wrapping magnetorheological fluid damper |
| CN205559672U (en) * | 2016-05-06 | 2016-09-07 | 华东交通大学 | Adopt rack and pinion and bevel gear transmission to carry out magneto rheological damper that energy was gathered |
-
2018
- 2018-07-09 CN CN201810743125.1A patent/CN108895112A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2828438Y (en) * | 2005-10-24 | 2006-10-18 | 河北工业大学 | Adaptive vibration damper based on current converter |
| JP2007303581A (en) * | 2006-05-12 | 2007-11-22 | Kayaba Ind Co Ltd | Magnetic viscous fluid shock absorber |
| CN103306393A (en) * | 2012-03-15 | 2013-09-18 | 哈尔滨工业大学 | Driving energy self-supplied magnetorheological damper |
| CN104963983A (en) * | 2015-05-14 | 2015-10-07 | 山东理工大学 | Coil externally-wrapping magnetorheological fluid damper |
| CN205559672U (en) * | 2016-05-06 | 2016-09-07 | 华东交通大学 | Adopt rack and pinion and bevel gear transmission to carry out magneto rheological damper that energy was gathered |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021012578A1 (en) * | 2019-07-22 | 2021-01-28 | 江苏科技大学 | Self-adaption variable damping vortex-induced vibration energy conversion device |
| CN114412950A (en) * | 2021-12-13 | 2022-04-29 | 重庆大学 | Multistage excitation dual-cylinder magnetorheological damper and control method thereof |
| CN114412950B (en) * | 2021-12-13 | 2024-02-02 | 重庆大学 | Multistage excitation double-cylinder magnetorheological damper and control method thereof |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181127 |
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| RJ01 | Rejection of invention patent application after publication |