CN102425637A - Extrusion flow type double-ejector-rod magnetorheological damper - Google Patents
Extrusion flow type double-ejector-rod magnetorheological damper Download PDFInfo
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- CN102425637A CN102425637A CN2011103946685A CN201110394668A CN102425637A CN 102425637 A CN102425637 A CN 102425637A CN 2011103946685 A CN2011103946685 A CN 2011103946685A CN 201110394668 A CN201110394668 A CN 201110394668A CN 102425637 A CN102425637 A CN 102425637A
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- slave cylinder
- clutch release
- release slave
- damping
- annular damp
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Abstract
The invention discloses an extrusion flow type double-ejector-rod magnetorheological damper. The extrusion flow type double-ejector-rod magnetorheological damper comprises two annular damping pipes, two damping rods, a roller support, two damping rollers, two groups of electromagnets, and a work cylinder; the section of an inner cavity of the work cylinder is rectangular; a baffle plate is fixed at two ends of the work cylinder respectively; the two annular damping pipes are made of a non-magnetic polymer elastic material; magnetorheological fluid is filled in the two annular damping pipes; the two annular damping pipes pass through through holes on two short edges of two ends of the work cylinder and are fixed on inner and outer surfaces of the short edges of the work cylinder; the roller support is cross-shaped; two damping rollers ate fixed at two ends of the roller support respectively; one end of each of the two damping rods is fixed at one end of the other two ends of the roller support, the other end of each of the two damping rods is extended out of the work cylinder through a sliding bearing on each of the baffle plates at two ends of the work cylinder; and the two groups of electromagnets are fixed on the outer circumferences of the two annular damping pipes outside the two short edges of the work cylinder.
Description
Technical field
The invention belongs to a kind of damper, be specifically related to the two outstretch pole magnetorheological dampers of a kind of extrusion flow dynamic formula.
Background technique
Existing MR damper mainly adopts the structure of clutch release slave cylinder, piston and piston rod, in clutch release slave cylinder, also has been full of magnetic flow liquid simultaneously, and this type MR damper is to drive the motion of piston in clutch release slave cylinder through piston rod to produce damping force; Magnetic flow liquid in clutch release slave cylinder is taken out of outside the clutch release slave cylinder with piston rod; Normally between clutch release slave cylinder and piston rod, adopt seal arrangement to solve the motive sealing problem of piston rod, because magnetic flow liquid is the amalgam that contains the attritive powder of multiple composition at mineral oil, therefore; It is carried out very difficulty of motive sealing; In case the leakage of magnetic flow liquid takes place, light then make the decreased performance of MR damper, heavy then make MR damper total failure; Therefore, the motive sealing problem of piston rod has become industry and has improved the MR damper major obstacle in working life.
Summary of the invention
In the deficiency aspect the piston rod motive sealing, the present invention proposes brand-new MR damper to existing MR damper, that is: the two outstretch pole magnetorheological dampers of a kind of extrusion flow dynamic formula.
Technological scheme of the present invention is following:
The two outstretch pole magnetorheological dampers of a kind of extrusion flow dynamic formula, it comprises: two annular damp tubes, two damper rods, rolling wheel support, two damping rollers, two groups of electromagnet, clutch release slave cylinder; The cross section of the clutch release slave cylinder inner chamber that is made up of permeability magnetic material is a rectangular; Two ends at clutch release slave cylinder all are fixed with plate washer, and the middle part of plate washer is porose, and internal fixation has sliding bearing in the hole; All there is through hole at two ends at two minor faces of clutch release slave cylinder, and the aperture of through hole is greater than the external diameter of annular damp tube; Two annular damp tubes are to be made up of magnetic conduction macromolecular material not, in two annular damp tubes, have been full of magnetic flow liquid, and two annular damp tubes pass the through hole at two minor face two ends of clutch release slave cylinder respectively and are fixed on the inside and outside two sides of clutch release slave cylinder minor face; The rolling wheel support that is made up of non-magnet_conductible material is a cross; The damping roller is to be made up of the fixing magnetic material annulus of the excircle of the cylindrical body roller that constitutes at non-magnet_conductible material; On the circumference of magnetic material annulus, be filled with at least 4 pairs of magnetic poles; And the thickness of damping roller is greater than the external diameter of annular damp tube; Two damping rollers are separately fixed at the two ends of rolling wheel support; And the disc that is fixed on two damping rollers at rolling wheel support two ends is parallel to each other; The diameter of two damping rollers is all on same straight line, and two damping roller diameters and two damping roller spacing sums are poor greater than two times of the spacing of two minor faces in the clutch release slave cylinder and annular damp tube external diameters, and two damping roller diameters and two damping roller spacing sums are poor less than four times of the spacing of two minor faces in the clutch release slave cylinder and annular damp tube pipe thicknesses; One end of two damper rods is separately fixed at the two ends in addition of rolling wheel support, and the other end of two damper rods stretches out in clutch release slave cylinder through the sliding bearing on the plate washer of clutch release slave cylinder two ends respectively; Two groups of electromagnet are separately fixed on the excircle of two outer annular damp tubes of two minor faces of clutch release slave cylinder.
Function of the present invention is achieved in that because poor greater than two times of the spacing of two minor faces in the clutch release slave cylinder and annular damp tube external diameters of two damping roller diameters and two damping roller spacing sums; Two damping roller diameters and two damping roller spacing sums are poor less than four times of the spacing of two minor faces in the clutch release slave cylinder and annular damp tube pipe thicknesses; So; Two annular damp tubes that are on two minor faces in clutch release slave cylinder on two damping roller diameters will be flattened by two damping rollers; So; When driving through rolling wheel support, damper rod is pressed in two damping rollers on the annular damp tube when in clutch release slave cylinder, moving; The damping roller will roll and roll the magnetic flow liquid in the annular damp tube; Simultaneously; Owing on the excircle of damping roller, be distributed with at least 4 pairs of magnetic poles, and clutch release slave cylinder is to be made up of permeability magnetic material, so; Between the magnetic pole of damping roller excircle and clutch release slave cylinder minor face, just formed stronger closed magnetic field; Make the magnetic flow liquid that is in the annular damp tube that has been crushed between damping roller and the clutch release slave cylinder minor face between damping roller and clutch release slave cylinder minor face in high magnetic fields effect down and viscosity is very high, make to be on the damping roller direction of advance the interior magnetic flow liquid of annular damp tube and to receive the obstruction of the magnetic flow liquid that viscosity is very high in the gap between damping roller and the clutch release slave cylinder minor face and be difficult to through the gap reverse flow in annular damp tube between damping roller and the clutch release slave cylinder minor face, make to be on the damping roller direction of advance that the interior magnetic flow liquid of annular damp tube can only be mobile towards the direction that the damping roller advances under the rolling compaction of damping roller; Because two annular damp tubes are made up of magnetic conduction macromolecular material not; So, in above-mentioned working procedure the dampened roller roll and local two annular damp tubes that have been crushed will be in elasticity and the pipe of self the extruding rapid down reinstatement of magnetic flow liquid.
So; When damper rod drives the damping roller be pressed on the annular damp tube and in clutch release slave cylinder, does back and forth rolling through rolling wheel support; The magnetic flow liquid of annular in the damp tube will be done back and forth mobile down in annular damp tube the rolling of the reciprocal rolling of damping roller; When the electromagnet no electric circuit on the annular damp tube excircle that is fixed on two minor face outsides of clutch release slave cylinder; The viscosity that cause is in the magnetic flow liquid in the annular damp tube in the electromagnet is lower, and the damping force that receives when making magnetic flow liquid in annular damp tube, do reciprocal flowing is less, thereby makes damper rod receive less damping force; After being fixed on the electromagnet energising on the annular damp tube excircle of two minor faces of clutch release slave cylinder outside; Make the viscosity of the magnetic flow liquid in the annular damp tube that is in the electromagnet higher; The damping force that magnetic flow liquid is received when annular damp tube is done reciprocal flowing is bigger, thereby makes damper rod receive bigger damping force; Get into the size of current in the electromagnet through adjustment, the size of damping force in the time of can adjusting the damper rod to-and-fro motion makes the damping force of the two outstretch pole magnetorheological dampers of a kind of extrusion flow dynamic formula obtain adjustment.
Compare with existing MR damper; " the two outstretch pole magnetorheological dampers of a kind of extrusion flow dynamic formula " of the present invention are sealed in the annular damp tube because of its working medium magnetic flow liquid; And the present invention's magnetic flow liquid when work just flows in annular damp tube and does not have the motive sealing problem; So, " a kind of extrusion flow dynamic formula two outstretch pole magnetorheological dampers " of the present invention but the service behaviour stable for extended periods of time and be improved working life.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the local enlarged diagram of Fig. 1.
Fig. 4 is a work schematic representation of the present invention.
Embodiment
Specify structure of the present invention below in conjunction with accompanying drawing:
Referring to Fig. 1, Fig. 2 and Fig. 3; This is a kind of concrete structure of the present invention; The two outstretch pole magnetorheological dampers of a kind of extrusion flow dynamic formula, it comprises: annular damp tube 3 and annular damp tube 22, damper rod 10 and damper rod 31, rolling wheel support 26, damping roller 28 and damping roller 29, electromagnet 4 and electromagnet 21, clutch release slave cylinder 27; The cross section of clutch release slave cylinder 27 inner chambers that are made up of permeability magnetic material is rectangular (seeing Fig. 2 for details); Be fixed with plate washer 1 and plate washer 8 at the two ends of clutch release slave cylinder 27; Middle part at plate washer 8 is porose; Internal fixation has sliding bearing 9 in the hole, and is porose at the middle part of plate washer 1, and internal fixation has sliding bearing 30 in the hole; Have the through hole 2 and the two ends of through hole 7, minor face 20 that through hole 24 and through hole 19 are arranged at the two ends of clutch release slave cylinder 27 minor faces 5, the aperture of through hole 2, through hole 7, through hole 24 and through hole 19 is greater than the external diameter of annular damp tube 3 and annular damp tube 22; Annular damp tube 3 and annular damp tube 22 are to be made up of magnetic conduction macromolecular material not; In annular damp tube 3, be full of in magnetic flow liquid 6, the annular damp tube 22 and be full of magnetic flow liquid 23, annular damp tube 3 passes the through hole 2 and 7 and be fixed on the inside and outside two sides of clutch release slave cylinder 27 minor faces 5 at clutch release slave cylinder 27 minor faces 5 two ends; Annular damp tube 22 passes the through hole 24 and 19 and be fixed on the inside and outside two sides of clutch release slave cylinder 27 minor faces 20 at clutch release slave cylinder 27 minor faces 20 two ends; The rolling wheel support 26 that is made up of non-magnet_conductible material is cross; Damping roller 28 be by on the excircle of the cylindrical body roller 11 that constitutes at non-magnet_conductible material fixing one on excircle, be filled with the magnetic material annulus 14 of at least 4 pairs of magnetic poles and constitute; Damping roller 29 be by on the excircle of the cylindrical body roller 16 that constitutes at non-magnet_conductible material fixing one on excircle, be filled with the magnetic material annulus 17 of at least 4 pairs of magnetic poles and constitute; And the thickness of damping roller 28 and damping roller 29 is greater than the external diameter of annular damp tube 3 and 22; Damping roller 28 and damping roller 29 are separately fixed at the two ends (seeing Fig. 3 for details) of rolling wheel support 26 through central shaft 13 and central shaft 15; And the disc of damping roller 28 and damping roller 29 is parallel to each other, and the diameter of damping roller 28 and damping roller 29 is all on same straight line A; The spacing sum of the diameter of damping roller 28 and damping roller 29 and damping roller 28 and damping roller 29 is poor greater than the spacing of clutch release slave cylinder 27 inner short-sides 5 and minor face 20 and two times of annular damp tube 3 (or annular damp tube 22) external diameters, and the diameter of damping roller 28 and damping roller 29 and the spacing sum of damping roller 28 and damping roller 29 are poor less than four times of the spacing of clutch release slave cylinder 27 inner short-sides 5 and minor face 20 and annular damp tube 3 (or annular damp tube 22) pipe thicknesses; One end of damper rod 10 and damper rod 31 is separately fixed at the two ends in addition of rolling wheel support 26, and the other end of damper rod 10 and damper rod 31 stretches out in clutch release slave cylinder 27 with sliding bearing 30 through the plate washer 1 at clutch release slave cylinder 27 two ends and the sliding bearing 9 on the plate washer 8 respectively; Electromagnet 4 is fixed on the excircle of the annular damp tube 3 outside clutch release slave cylinder 27 minor faces 5, and electromagnet 21 is fixed on the excircle of the annular damp tube 22 outside clutch release slave cylinder 27 minor faces 20.
Combine now Fig. 1, Fig. 2, Fig. 3 and Fig. 4 that the two outstretch pole magnetorheological dampers of a kind of extrusion flow dynamic formula of the present invention are further described: when damper rod 10 drives the damping roller 28 that is pressed on annular damp tube 3 and the annular damp tube 22 and damping roller 29 in clutch release slave cylinder 27 during to left movement through rolling wheel support 26; Damping roller 28 and damping roller 29 will roll and roll magnetic flow liquid 6 and the magnetic flow liquid 23 in annular damp tube 3 and the annular damp tube 22 to the left side; Simultaneously; Owing on the excircle of damping roller 28 and damping roller 29, be distributed with at least 4 pairs of magnetic poles; And clutch release slave cylinder 27 is to be made up of permeability magnetic material; So; Between the minor face 5 of the magnetic pole of damping roller 28 and damping roller 29 excircles and clutch release slave cylinder 27 and minor face 20, just formed stronger closed magnetic field; Make be in the annular damp tube 3 that has been crushed between damping roller 28 and damping roller 29 and clutch release slave cylinder 27 minor faces 5 and the minor face 20 and the magnetic flow liquid 12 in the annular damp tube 22 and magnetic flow liquid 18 between damping roller 28 and damping roller 29 and clutch release slave cylinder 27 minor faces 5 and minor face 20 under the effect of high magnetic fields and viscosity is very high; Make and be on damping roller 28 and damping roller 29 directions of advance magnetic flow liquid 6 on (that is: the left sides in the clutch release slave cylinder 27) and magnetic flow liquid 23 in the annular damp tube 3 and annular damp tube 22 and receive the obstruction of viscosity is very high in the gap between damping roller 28 and damping roller 29 and clutch release slave cylinder 27 minor faces 5 and the minor face 20 magnetic flow liquid 12 and magnetic flow liquid 18 and be difficult to through the reverse flow in annular damp tube 3 and annular damp tube 22 of the gap between damping roller 28 and damping roller 29 and clutch release slave cylinder 27 minor faces 5 and the minor face 20; Make and be in that annular damp tube 3 down can only be mobile towards the direction that damping roller 28 and damping roller 29 advance at damping roller 28 and damping roller 29 rolling compaction left with magnetic flow liquids 23 with the magnetic flow liquids 6 in the annular damp tube 22 on damping roller 28 and damping roller 29 directions of advance; That is: the magnetic flow liquid 6 in the annular damp tube 3 can only done clockwise flowing in annular damp tube 3 under damping roller 28 rolling compaction left, and the magnetic flow liquids 23 in the annular damp tube 22 can only done counterclockwise flowing in annular damp tube 22 under damping roller 29 rolling compaction left; Because annular damp tube 3 and annular damp tube 22 are made up of magnetic conduction macromolecular material not; So, in above-mentioned working procedure dampened roller 28 roll with damping roller 29 and the local annular damp tube 3 that has been crushed and annular damp tube 22 will be in elasticity and the pipe of self the rapid down reinstatement of extruding of magnetic flow liquid 6 and magnetic flow liquid 23.
When controlling power supply 25 not to electromagnet 4 and electromagnet 21 output currents; Because of electromagnet 4 and electromagnet 21 do not generate an electromagnetic field; Make the viscosity of magnetic flow liquid 6 and magnetic flow liquid 23 in the annular damp tube 3 that is in electromagnet 4 and the electromagnet 21 and the annular damp tube 22 lower; The damping force that receives when magnetic flow liquid 6 is flowed in annular damp tube 3 and annular damp tube 22 with magnetic flow liquid 23 is less, thereby makes damper rod 10 receive less damping force; When controlling power supply 25 behind electromagnet 4 and electromagnet 21 output currents; Make electromagnet 4 and electromagnet 21 produce stronger electromagnetic field; Make the viscosity of magnetic flow liquid 6 and magnetic flow liquid 23 in the annular damp tube 3 that is in electromagnet 4 and the electromagnet 21 and the annular damp tube 22 higher; Make magnetic flow liquid 6 bigger, thereby make damper rod 10 receive bigger damping force with the damping force that magnetic flow liquid 23 receives when annular damp tube 3 flows with annular damp tube 22; Output to the size of current in electromagnet 4 and the electromagnet 21 through adjustment control power supply 25; Can adjust magnetic flow liquid 6 and the viscosity size of magnetic flow liquid 23 in the annular damp tube 3 that is in electromagnet 4 and the electromagnet 21 and the annular damp tube 22; The size of damping force obtained changing when damper rod 10 drive damping rollers 28 were moved in clutch release slave cylinder 27 with damping roller 29, made the damping force of the two outstretch pole magnetorheological dampers of a kind of extrusion flow dynamic formula obtain adjustment.Situation when in clutch release slave cylinder 27, moving with damping roller 29 because of damper rod 31 drive damping rollers 28 is identical with it, repeats no more here.
Claims (5)
1. two outstretch pole magnetorheological dampers of an extrusion flow dynamic formula; It comprises: two annular damp tubes, two damper rods, rolling wheel support, two damping rollers, two groups of electromagnet, clutch release slave cylinder: the cross section of said clutch release slave cylinder inner chamber is a rectangular; Two ends at clutch release slave cylinder all are fixed with plate washer, and the middle part of plate washer is porose, and internal fixation has sliding bearing in the hole; All there is through hole at two ends at two minor faces of clutch release slave cylinder, and the aperture of through hole is greater than the external diameter of annular damp tube; Said two annular damp tubes are to be made up of magnetic conduction macromolecular material not, in two annular damp tubes, have been full of magnetic flow liquid, and two annular damp tubes pass the through hole at two minor face two ends of clutch release slave cylinder respectively and are fixed on the inside and outside two sides of clutch release slave cylinder minor face; Said rolling wheel support is a cross; Said two damping rollers are separately fixed at the two ends of rolling wheel support; One end of said two damper rods is separately fixed at the two ends in addition of rolling wheel support, and the other end of two damper rods stretches out in clutch release slave cylinder through the sliding bearing on the plate washer of clutch release slave cylinder two ends respectively; Said two groups of electromagnet are separately fixed on the excircle of two outer annular damp tubes of two minor faces of clutch release slave cylinder.
2. the two outstretch pole magnetorheological dampers of a kind of extrusion flow dynamic formula as claimed in claim 1; It is characterized in that: the said disc that is fixed on two damping rollers at rolling wheel support two ends is parallel to each other; And the diameter of two damping rollers is all on same straight line; Spacing sum between the diameter of two damping rollers and two the damping rollers is poor greater than two times of the spacing of two minor faces in the clutch release slave cylinder and annular damp tube external diameters, and the spacing sum between the diameter of two damping rollers and two the damping rollers is poor less than four times of the spacing of two minor faces in the clutch release slave cylinder and annular damp tube pipe thicknesses.
3. the two outstretch pole magnetorheological dampers of a kind of extrusion flow dynamic formula as claimed in claim 1; It is characterized in that: said damping roller is to be made up of fixing magnetic material annulus on the excircle of the cylindrical body roller that constitutes at non-magnet_conductible material; On the circumference of said magnetic material annulus, be filled with at least 4 pairs of magnetic poles, and the thickness of damping roller is greater than the external diameter of annular damp tube.
4. the two outstretch pole magnetorheological dampers of a kind of extrusion flow dynamic formula as claimed in claim 1, it is characterized in that: said clutch release slave cylinder is to be made up of permeability magnetic material.
5. the two outstretch pole magnetorheological dampers of a kind of extrusion flow dynamic formula as claimed in claim 1, it is characterized in that: said rolling wheel support is made up of non-magnet_conductible material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110394668 CN102425637B (en) | 2011-12-02 | 2011-12-02 | Extrusion flow type double-ejector-rod magnetorheological damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110394668 CN102425637B (en) | 2011-12-02 | 2011-12-02 | Extrusion flow type double-ejector-rod magnetorheological damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102425637A true CN102425637A (en) | 2012-04-25 |
| CN102425637B CN102425637B (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110394668 Expired - Fee Related CN102425637B (en) | 2011-12-02 | 2011-12-02 | Extrusion flow type double-ejector-rod magnetorheological damper |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050258009A1 (en) * | 2004-05-19 | 2005-11-24 | Bauerfeind Ag | Controllable motion damper |
| WO2008136851A2 (en) * | 2007-05-01 | 2008-11-13 | Lord Corporation | Magneto-rheological dampers for semi-active suspension systems |
| CN201184387Y (en) * | 2008-03-27 | 2009-01-21 | 中国科学技术大学 | Magnetic current change damper capable of regulating and controlling damp |
| CN202349084U (en) * | 2011-12-02 | 2012-07-25 | 谭晓婧 | Extrusion flow-type double-extrusion rod magnetorheological damper |
-
2011
- 2011-12-02 CN CN 201110394668 patent/CN102425637B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050258009A1 (en) * | 2004-05-19 | 2005-11-24 | Bauerfeind Ag | Controllable motion damper |
| WO2008136851A2 (en) * | 2007-05-01 | 2008-11-13 | Lord Corporation | Magneto-rheological dampers for semi-active suspension systems |
| CN201184387Y (en) * | 2008-03-27 | 2009-01-21 | 中国科学技术大学 | Magnetic current change damper capable of regulating and controlling damp |
| CN202349084U (en) * | 2011-12-02 | 2012-07-25 | 谭晓婧 | Extrusion flow-type double-extrusion rod magnetorheological damper |
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| Publication number | Publication date |
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| CN102425637B (en) | 2013-01-23 |
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Granted publication date: 20130123 Termination date: 20131202 |