CN202203321U - Double-ejection-rod magnetorheological fat damper - Google Patents
Double-ejection-rod magnetorheological fat damper Download PDFInfo
- Publication number
- CN202203321U CN202203321U CN2011202995124U CN201120299512U CN202203321U CN 202203321 U CN202203321 U CN 202203321U CN 2011202995124 U CN2011202995124 U CN 2011202995124U CN 201120299512 U CN201120299512 U CN 201120299512U CN 202203321 U CN202203321 U CN 202203321U
- Authority
- CN
- China
- Prior art keywords
- piston
- clutch release
- release slave
- slave cylinder
- oval ball
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses a double-ejection-rod magnetorheological fat damper which comprises two piston rods, a piston and a working cylinder, wherein the piston is in an elliptically spherical shape; the short axis of the elliptically spherical piston is smaller than the inner diameter of the working cylinder, and a magnetorheological fat flow gap is reserved; the long axis of the elliptically spherical piston is shorter than the length of the working cylinder; two groups of exciting coils are wound on the elliptically spherical piston; the two groups of exciting coils are distributed along the long axis of the elliptically spherical piston and arranged on two sides of the short axis of the elliptically spherical piston respectively; one ends of the two piston rods are respectively fixed at two ends of the elliptically spherical piston; the axial lines of the two piston rods are coaxial with the long axis of the elliptically spherical piston; the other ends of the two piston rods extend out of the two ends of the working cylinder through sealing devices and bearings, which are arranged at the two ends of the working cylinder; and the working cylinder is full of the magnetorheological fat.
Description
Technical field
The utility model belongs to a kind of MR damper, is specifically related to a kind of pair of outstretch pole magnetorheological fat damper.
Background technique
MR damper is as a kind of intelligent vibration damping device; The size of its damping force can be carried out remote stepless through the control power supply and regulated; Mostly the working medium of existing MR damper is magnetic flow liquid, and magnetic flow liquid demonstrates low viscous characteristic under zero magnetic field condition; And under the action of a magnetic field of varying strength; Then demonstrate different viscosity, people have utilized this performance development of magnetic flow liquid to go out various MR dampers just, but owing to the sedimentation meeting of suspended phase in the magnetic flow liquid influences device performance; For this reason; People have developed another kind of magnetorheological materials again after magnetic flow liquid: the suspended phase sedimentation, because the special skeletal structure of magneto-rheological grease and stability is very high, can not take place and influence device performance in magneto-rheological grease; But the viscosity of magneto-rheological grease under zero magnetic field condition is higher and mobile relatively poor; And existing MR damper designs as working medium with magnetic flow liquid mostly, and mostly the piston of its damper is the cylinder bodily form, and cylinder bodily form piston is difficult to be applicable to this working medium of magneto-rheological grease.
Summary of the invention
Be difficult to be applicable to existing MR damper and the deficiency of magneto-rheological grease the utility model provides a kind of novel MR damper, that is: a kind of pair of outstretch pole magnetorheological fat damper
The technological scheme of the utility model is following:
A kind of pair of outstretch pole magnetorheological fat damper, it comprises: two piston rods, piston and clutch release slave cylinders, clutch release slave cylinder are cylindrical shape; Be provided with the end cap of band center hole at the two ends of cylindrical shape clutch release slave cylinder; The internal diameter of center hole is provided with seal arrangement and bearing greater than the external diameter of piston rod in center hole, piston places in the clutch release slave cylinder; In clutch release slave cylinder, be full of magneto-rheological grease; It is characterized in that: piston is an oval ball shape, and the minor axis of oval ball piston is less than the internal diameter of clutch release slave cylinder and leave the flow gap of magneto-rheological grease, and the major axis of oval ball piston is less than the length of clutch release slave cylinder; On the oval ball piston, be wound with two groups of field coils; Two groups of field coils distribute and place the both sides of oval ball piston minor axis respectively along the major axis of oval ball piston, outside field coil, add protective layer, and protective layer flushes with the periphery wall of oval ball piston; One end of two piston rods is separately fixed at the two ends of oval ball piston, and the shaft axis of two piston rods is coaxial with the major axis of oval ball piston, and the other end of two piston rods stretches out in clutch release slave cylinder through the center hole on two end caps of clutch release slave cylinder respectively; The center of a piston rod in two piston rods is porose, and the lighting outlet of field coil leads to outside the clutch release slave cylinder through the center hole of piston rod.
Owing to taked technique scheme; Make gap between the inner circle wall of periphery wall and clutch release slave cylinder of oval ball piston at the axial annular gap that forms a gradual change of oval ball piston major axis; Piston rod when driving the oval ball piston and in clutch release slave cylinder, move, because of the oval ball piston less with the diameter at the two ends of piston rod joint, and oval ball piston periphery wall and clutch release slave cylinder inner circle wall between annular gap bigger; Make the extruding force that the magneto-rheological grease of an end receives in the clutch release slave cylinder bigger; The oval ball piston is got into comparalive ease and push the magneto-rheological grease of an end in the clutch release slave cylinder, simultaneously, leakage field is bigger greatly because of annular gap here; Viscosity magneto-rheological grease is lower so the magnetic intensity here is less; The magneto-rheological grease that makes an end in the clutch release slave cylinder can more easily flow along the annular gap between oval ball piston periphery wall and the clutch release slave cylinder inner circle wall, therefore after receiving the extruding of oval ball piston; Compare with existing MR damper, the working state of two outstretch pole magnetorheological fat dampers when being working medium with the magneto-rheological grease of the utility model is better.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model.
Fig. 2 is the A-A sectional view among Fig. 1.
Fig. 3 is the B-B sectional view among Fig. 1.
Fig. 4 is the C-C sectional view among Fig. 1.
Embodiment
Specify the structure of the utility model below in conjunction with accompanying drawing:
Referring to Fig. 1 and Fig. 2, this is a kind of concrete structure of the utility model, a kind of pair of outstretch pole magnetorheological fat damper; It comprises: piston rod 1 and piston rod 17, piston 8 and clutch release slave cylinder 6; Clutch release slave cylinder 6 is a cylindrical shape, is provided with the end cap 5 of band center hole 22 and the end cap 14 of band center hole 23 at the two ends of cylindrical shape clutch release slave cylinder 6, in the center hole 22 of end cap 5, is provided with seal arrangement 4 and bearing 3; Center hole 23 at end cap 14 is provided with seal arrangement 15 and bearing 16; Piston 8 places in the clutch release slave cylinder 6, in clutch release slave cylinder 6, has been full of magneto-rheological grease 7, and its piston 8 is an oval ball shape; The minor axis of oval ball piston 8 is less than the internal diameter of clutch release slave cylinder 6 and leave the flow gap 20 of magneto-rheological grease; The major axis of oval ball piston 8 is less than the length of clutch release slave cylinder 6, on oval ball piston 8, is wound with field coil 9 and field coil 12, and field coil 9 and field coil 12 distribute and place the both sides of oval ball piston 8 minor axises respectively along the major axis of oval ball piston 8; Outside field coil 9 and field coil 12, add protective layer 10 and protective layer 13, protective layer 10 flushes with the periphery wall of oval ball piston 8 with protective layer 13; Piston rod 1 and piston rod 17 1 ends are separately fixed at the two ends of oval ball piston 8; The shaft axis of piston rod 1 and piston rod 17 is coaxial with the major axis of oval ball piston 8; The other end of piston rod 1 and piston rod 17 stretches out in clutch release slave cylinder 6 through center hole on the end cap on the clutch release slave cylinder 65 22 and center hole 23 on the end cap 14 respectively, and the center hole 2 of the lighting outlet 18 of field coil 9 and field coil 12 through the fairlead on the oval ball piston 8 11 and fairlead 21 and piston rod 1 leads to that clutch release slave cylinder 6 is outer to join with control power supply 19.
The working condition of two outstretch pole magnetorheological fat dampers is such: referring to Fig. 1; When control power supply 19 when the field coil on oval ball piston 89 is not with field coil 12 output currents; Magnetic intensity in the annular gap 20 between oval ball piston 8 periphery walls and clutch release slave cylinder 6 inner circle walls is zero; So the viscosity of magneto-rheological grease 7 is lower in the clutch release slave cylinder 6, when piston rod 1 drive oval ball piston 8 moves right in clutch release slave cylinder 6; The magneto-rheological grease 7 of right-hand member is under the extruding of oval ball piston 8 right-hand members in the clutch release slave cylinder 6; To flow (referring to Fig. 3 and Fig. 4) along oval ball piston 8 periphery walls and this annular gap that reduces gradually 20 of clutch release slave cylinder 6 inner circle walls, after through oval ball piston 8 minor axises and this minimum annular gap 20 of clutch release slave cylinder 6 internal diameters, enter into the left end in the clutch release slave cylinder 6; At this moment, it is less that piston rod 1 drives the damping force that receives when oval ball piston 8 moves right in clutch release slave cylinder; When controlling power supply 19 behind field coil on the oval ball piston 89 and field coil 12 output currents; Because vary in size (referring to Fig. 2, Fig. 3 and Fig. 4) of the annular gap 20 between clutch release slave cylinder 6 inner circle walls and oval ball piston 8 periphery walls; Therefore; Magnetic intensity therebetween is also different; In annular gap 20 minimums (referring to Fig. 2) at oval ball piston 8 minor axis places and magnetic intensity is maximum, magnetic intensity reduces gradually with the increase gradually (referring to Fig. 3 and Fig. 4) of annular gap 20 after leaving oval ball piston 8 minor axises, therefore; The viscosity of the magneto-rheological grease 7 in the annular gap 20 in clutch release slave cylinder 6 between oval ball piston 8 periphery walls and clutch release slave cylinder 6 inner circle walls is different; Therefore, when piston rod 1 drive oval ball piston 8 moved right in clutch release slave cylinder 6, the magneto-rheological grease 7 of right-hand members was under the extruding of oval ball piston 8 right-hand members in the clutch release slave cylinder 6; Make the left end of magneto-rheological grease 7 in the annular gap that increases gradually through a magnetic intensity 20 enters into clutch release slave cylinder 6 that right-hand member is squeezed in the clutch release slave cylinder 6, it is bigger to make piston rod 1 drive the damping force that receives when oval ball piston 8 moves right in clutch release slave cylinder 6; Regulate the size of current of control power supply 19 outputs and can adjust the damping force size that receives when piston rod 1 drive oval ball piston 8 moves right in clutch release slave cylinder 6; Make the output damping of two outstretch pole magnetorheological fat dampers do control; To drive oval ball piston 8 situation during to left movement in clutch release slave cylinder 6 similar with it when piston rod 1, repeats no more here.
Claims (2)
1. two outstretch pole magnetorheological fat damper, it comprises: two piston rods, piston and clutch release slave cylinders, said clutch release slave cylinder are cylindrical shape; Be provided with the end cap of band center hole at the two ends of cylindrical shape clutch release slave cylinder; The internal diameter of center hole is provided with seal arrangement and bearing greater than the external diameter of piston rod in center hole, said piston places in the clutch release slave cylinder; In clutch release slave cylinder, be full of magneto-rheological grease; It is characterized in that: said piston is an oval ball shape, and the minor axis of oval ball piston is less than the internal diameter of clutch release slave cylinder and leave the flow gap of magneto-rheological grease, and the major axis of oval ball piston is less than the length of clutch release slave cylinder; On the oval ball piston, be wound with two groups of field coils; Two groups of field coils distribute and place the both sides of oval ball piston minor axis respectively along the major axis of oval ball piston, outside field coil, add protective layer, and protective layer flushes with the periphery wall of oval ball piston; One end of said two piston rods is separately fixed at the two ends of oval ball piston, and the shaft axis of two piston rods is coaxial with the major axis of oval ball piston, and the other end of two piston rods stretches out in clutch release slave cylinder through the center hole on two end caps of clutch release slave cylinder respectively.
2. a kind of pair of outstretch pole magnetorheological fat damper as claimed in claim 1 is characterized in that the center of a piston rod in said two piston rods is porose, and the lighting outlet of said field coil leads to outside the clutch release slave cylinder through the center hole of piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202995124U CN202203321U (en) | 2011-08-18 | 2011-08-18 | Double-ejection-rod magnetorheological fat damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202995124U CN202203321U (en) | 2011-08-18 | 2011-08-18 | Double-ejection-rod magnetorheological fat damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202203321U true CN202203321U (en) | 2012-04-25 |
Family
ID=45967443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202995124U Expired - Fee Related CN202203321U (en) | 2011-08-18 | 2011-08-18 | Double-ejection-rod magnetorheological fat damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202203321U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297229A (en) * | 2011-08-18 | 2011-12-28 | 谢宁 | Double-outstretch pole magneto-rheological grease damper |
-
2011
- 2011-08-18 CN CN2011202995124U patent/CN202203321U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297229A (en) * | 2011-08-18 | 2011-12-28 | 谢宁 | Double-outstretch pole magneto-rheological grease damper |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203051609U (en) | Combined cylinder double-outlet-rod magneto-rheological damper | |
| CN101749358B (en) | Damping force adjustable permanent magnet type magnetic current variable damper | |
| CN202007855U (en) | Multilevel telescopic magnetorheological damper | |
| CN102297229A (en) | Double-outstretch pole magneto-rheological grease damper | |
| CN201627871U (en) | Double-ejector rod self-adaptation double-control magnetic current damper | |
| CN101818781B (en) | Built-in bar-type magneto-rheological damper | |
| CN110145566A (en) | A kind of revolving type magnetic rheologic damper and its working method of ball-screw-transmission | |
| CN202203320U (en) | Single-rod magnetorheological grease damper | |
| CN102287479A (en) | Double-rod magnetorheological grease damper | |
| CN201714899U (en) | Adaptive dual control magnetorheological damper | |
| CN202203327U (en) | Single piston rod magnetorheologic grease damper | |
| CN202203321U (en) | Double-ejection-rod magnetorheological fat damper | |
| CN102182785A (en) | Magnetic steel piston type magneto-rheological damper with double ejection rods | |
| CN102128232B (en) | Multilevel retractable type magnetorheological damping device | |
| CN202203328U (en) | Double-rod magnetorheological grease damper | |
| CN102297230B (en) | Double-outstretch pole plate magneto-rheological damper | |
| CN101832355A (en) | Double-out-rod adaptive double-control magneto-rheological damper | |
| CN202007856U (en) | Double-rod magnetic steel piston type magneto-rheological damper | |
| CN101832356B (en) | Self-adaptive double control magneto-rheological damper | |
| CN102359537B (en) | Single-rod magneto-rheological grease damper | |
| CN104033527A (en) | Gasbag-free single-rod magneto-rheological damper | |
| CN102141108B (en) | External electromagnet retractable type magnetorheological damper | |
| CN202203323U (en) | Double-rod plate type magnetorheological damper | |
| CN106884898A (en) | A kind of squash type increases turns round magnetic rheological clutch | |
| CN202203326U (en) | Single outlet rod magnetic rheological damping device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20120818 |