CN105736624A - Magneto-rheological damper with unidirectional damping property - Google Patents
Magneto-rheological damper with unidirectional damping property Download PDFInfo
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- CN105736624A CN105736624A CN201610313665.7A CN201610313665A CN105736624A CN 105736624 A CN105736624 A CN 105736624A CN 201610313665 A CN201610313665 A CN 201610313665A CN 105736624 A CN105736624 A CN 105736624A
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- cylinder barrel
- gland
- iron core
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- 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
- 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
- F16F9/3214—Constructional features of pistons
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- 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
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- 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
- F16F9/341—Special valve constructions; Shape or construction of throttling passages comprising noise-reducing or like features, e.g. screens
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a magneto-rheological damper with unidirectional damping property, and relates to the technical field of devices for adjusting damping property by changing fluid viscosity. The magneto-rheological damper comprises a damping cylinder, a unidirectional damping piston assembly, a coil assembly, a piston rod and magneto-rheological liquid, wherein the unidirectional damping piston assembly comprises a damping piston, a spring sheet and a gasket; a first annular through hole and a second annular through hole are formed in the damping piston; a magneto-rheological fluid passage is arranged on the coil assembly and is communicated with the first annular through hole, and the coil assembly does not cover the second annular through hole. The magneto-rheological damper has the advantages that when the damping piston moves up, the spring sheet seals the second annular through hole, the magneto-rheological fluid only passes through the magneto-rheological liquid passage under the action of a magnetic field, and the damping force can be adjusted by adjusting the intensity of the magnetic field; when the damping piston moves down, the second annular through hole is opened under the action of no magnetic field, and the produced damping force is little, so that the unidirectional damping property of the magneto-rheological damper is realized.
Description
Technical field
The present invention relates to the device technique field adjusting damping property by changing fluid toughness, particularly relate to a kind of MR damper with unidirectional damping characteristic.
Background technology
MR damper is based on the novel semi-active damper device of one of magnetic flow liquid controllable characteristics, the advantage such as there is fast response time, simple in construction, volume is little, be easily controlled, it is a kind of desirably vibration isolation, vibration absorber, is with a wide range of applications in vibration control field.Solenoid is around on the piston of antivibrator by common MR damper, piston arranges annular channel simultaneously or annular channel is set between piston and damping cylinder barrel, during work, magnetic flow liquid flows through generation damping force from annular channel, and the electric current just magnetic field intensity that can change in annular channel regulated in solenoid reaches the purpose of damping adjusting power.
Vibration control apparatus in engineering uses the antivibrator with unidirectional damping characteristic sometimes, the vibration of stable state can be played vibration isolation, damping effect, vibration isolation under transient impact effect, effectiveness in vibration suppression will not be produced deterioration effect again, such as a lot of automotive suspension vibroshocks just for having the antivibrator of unidirectional damping characteristic.For MR damper, its unidirectional damping characteristic can be cut off electric current and realize when piston moves along a direction, but in order to meet certain damping force requirement, the gap of common MR damper annular channel is smaller, even if therefore electric current is absent from magnetic field intensity when being zero, certain damping force during piston movement, still can be produced.
Summary of the invention
The technical problem to be solved is to provide a kind of MR damper with unidirectional damping characteristic, have in a certain direction of motion damping force only small, another adjustable feature of direction of motion damping force, described antivibrator has good vibration isolation, effectiveness in vibration suppression, and has advantage applied widely.
nullFor solving above-mentioned technical problem，The technical solution used in the present invention is: a kind of MR damper with unidirectional damping characteristic，Including damping cylinder barrel，The lower end of described damping cylinder barrel is provided with floating piston，It is magnetorheological sap cavity between upper surface and the damping cylinder barrel of floating piston，Magnetic flow liquid it is provided with in it，The upper end of described damping cylinder barrel is provided with one end and extends in damping cylinder barrel，The other end is positioned at the piston rod outside damping cylinder barrel，It is characterized in that: described piston rod is positioned at the end of damping cylinder barrel and is fixed with unidirectional damping piston component and coil block，Described unidirectional damping piston component includes damping piston、Spring leaf and pad，Described pad、Spring leaf and damping piston are fixed on the end of described piston rod successively from top to bottom，Described coil block is fixed on the piston rod on the downside of described damping piston，What the axle center around described damping piston was respectively separated is provided with several first annular vias and several second annular vias，Described second annular via is positioned at the outside of described first annular via and the aperture of the described second annular via aperture more than the first annular via，Position corresponding with described first annular via on described spring leaf，It is provided with the spring leaf annular via being connected respectively with the first annular via，And the second annular via is covered by spring leaf；Position corresponding with described first annular via on described coil block, is provided with the magnetic flow liquid passage being connected respectively with the first annular via, and described second annular via is not covered by described coil block.
Further technical scheme is in that: described damping cylinder barrel includes cylinder cap, cylinder barrel, floating piston and cylinder bottom, described cylinder cap is fixedly welded on the top of described cylinder barrel, described floating piston is positioned at the cylinder barrel of described coil block bottom, and be connected with cylinder barrel movable sealing, described cylinder bottom is fixedly welded on the bottom of described cylinder barrel；Forming magnetorheological sap cavity between described floating piston, cylinder cap and cylinder barrel, form accumulation of energy chamber between described cylinder bottom, floating piston and cylinder barrel, accumulation of energy intracavity is filled with nitrogen, the change in volume of magnetorheological sap cavity when stretching for compensating piston bar.
Further technical scheme is in that: the lower end of described piston rod is provided with the location shaft shoulder and external screw thread, the lower end of described piston rod is sequentially passed through the centre bore of pad, the centre bore of spring leaf and the centre bore of damping piston and is threadeded with the iron core on coil block by external screw thread, and described pad is connected on the shaft shoulder of described location.
Further technical scheme is in that: described coil block includes gland, ferrum core, lead magnet ring, solenoid, coil jackets and flux sleeve, the periphery of described iron core is wound with solenoid, the outer cover of solenoid is provided with coil jackets, the lower end location fit of magnetic conduction iron hoop and iron core, gland is fixed on the lower end of described iron core, gland is provided with gland annular via, the aperture of described gland annular via and position are identical with described first annular via, flux sleeve keeps the outside being sheathed on described iron core in gap, and its upper surface coordinates with damping piston, lower surface coordinates with gland, spring leaf annular via, first annular via, gap and gland annular via between flux sleeve and iron core are sequentially communicated formation magnetic flow liquid passage.
Further technical scheme is in that: the top of described iron core is provided with the iron core shaft shoulder, axle center is provided with centre bore, female thread it is provided with in centre bore, middle part is provided with the solenoid fairlead being connected with centre bore, bottom is provided with the axle collar, coil jackets is drawn by the iron core shaft shoulder, the axle collar and iron core location fit, the solenoid fairlead gone between on iron core of solenoid and the centre bore of piston rod.
Further technical scheme is in that: described gland includes being positioned at the lobe of upside and being fixed on the base portion on the downside of lobe, the periphery of described lobe is provided with gland screw thread, described base portion is provided with the gland shaft shoulder, and described gland annular via is arranged in described base portion.
Further technical scheme is in that: described gland is connected with the female thread in core center hole by gland screw thread, filling with sealant between the described upper surface of gland screw thread, the lower surface of piston rod and the inner threaded surface of iron core.
Further technical scheme is in that: described iron core, magnetic conduction iron hoop, flux sleeve making material be high magnetic permeability soft magnetic materials, damping piston, gland, coil jackets adopt non-magnet_conductible material make.
Further technical scheme is in that: the top and bottom of described flux sleeve are respectively equipped with magnetic conduction trepanning shoulder, and described flux sleeve is coordinated with damping piston and gland respectively by magnetic conduction trepanning shoulder.
Further technical scheme is in that: be provided with floating piston sealing ring between described floating piston and damping cylinder barrel；It is provided with damping piston sealing ring between described damping piston and damping cylinder barrel；It is provided with cylinder cap sealing ring between described piston rod and damping cylinder barrel.
Adopt and have the beneficial effects that produced by technique scheme: constitute the upper cavity of magnetic flow liquid between described spring leaf and damping cylinder barrel, between described damping piston, coil block and damping cylinder barrel, constitute the lower chamber of magnetic flow liquid.When damping piston moves upward, pressure effect due to epicoele magnetic flow liquid, second annular via is sealed by spring leaf, therefore magnetic flow liquid can only flow to lower chamber from the magnetic flow liquid passage that the first annular via flows into and through coil block, magnetic rheology effect is produced during solenoid energising, thus producing certain damping force, by regulating magnetic field intensity, it is possible to achieve the adjustment of damping force；When damping piston moves downward, the pressure of lower chamber backs down spring leaf, second annular via is in open mode, owing to the second annular via gap is bigger, therefore most magnetic flow liquid flow to upper cavity through the second annular via, simultaneously because damping piston is non-magnet_conductible material, magnetic rheology effect in the second annular via, will not be produced, thus the damping force of generation is only small, thus realizing the unidirectional damping characteristic of MR damper.
Described antivibrator can give full play to vibration absorber and be subject to the cushioning effect of spring when impacting suddenly of a direction, simultaneously because unidirectional damping characteristic is adjustable, therefore described antivibrator has good vibration isolation, effectiveness in vibration suppression, and has advantage applied widely.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the present invention；
Fig. 2 is the sectional structure schematic diagram of damping piston in the present invention；
Fig. 3 is the top view of damping piston in the present invention；
Fig. 4 is the sectional structure schematic diagram of spring leaf in the present invention
Fig. 5 is the top view of spring leaf in the present invention；
Fig. 6 is the sectional structure schematic diagram of flux sleeve in the present invention；
Fig. 7 is the sectional structure schematic diagram of iron core in the present invention；
Fig. 8 is the sectional structure schematic diagram of gland in the present invention；
Fig. 9 is the front view of piston rod in the present invention；
Figure 10 is magnetic circuit formation basic theory figure in the present invention；
Wherein: 1, cylinder cap 2, cylinder cap sealing ring 3, cylinder barrel 4, piston rod 401, external screw thread 402, the location shaft shoulder 5, floating piston 6, floating piston sealing ring 7, cylinder bottom 8, gland 801, gland screw thread 802, gland annular via 803, the gland shaft shoulder 9, iron core 901, the iron core shaft shoulder 902, the axle collar 903, solenoid fairlead 904, female thread 10, magnetic conduction iron hoop 11, solenoid 12, coil jackets 13, flux sleeve 131, magnetic conduction trepanning shoulder 14, damping piston sealing ring 15, damping piston 151, first annular via 152, second annular via 153, the piston shaft shoulder 16, spring leaf 161, spring leaf annular via 17, pad 18, fluid sealant.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but the present invention can also adopt other to be different from alternate manner described here to be implemented, those skilled in the art can do similar popularization when without prejudice to intension of the present invention, and therefore the present invention is not by the restriction of following public specific embodiment.
As shown in Figure 1, the invention discloses a kind of MR damper with unidirectional damping characteristic, including damping cylinder barrel, the lower end of described damping cylinder barrel is provided with floating piston 5, it is magnetorheological sap cavity between upper surface and the damping cylinder barrel of floating piston 5, being provided with magnetic flow liquid in it, the upper end of described damping cylinder barrel is provided with one end and extends in damping cylinder barrel, and the other end is positioned at the piston rod 4 outside damping cylinder barrel.
Further, described damping cylinder barrel includes cylinder cap 1, cylinder barrel 3, floating piston 5 and cylinder bottom 7.Described cylinder cap 1 is fixedly welded on the top of described cylinder barrel 3, and described piston rod 4 enters in cylinder barrel 3 through described cylinder cap 1, is provided with cylinder cap sealing ring 2 between piston rod 4 and cylinder cap 1.Described floating piston 5 is positioned at the cylinder barrel 3 of described coil block bottom, is provided with floating piston sealing ring 6 between described floating piston 5 and damping cylinder barrel, forms movable sealing with cylinder barrel and is connected.Described cylinder bottom 7 is fixedly welded on the bottom of described cylinder barrel 3；Forming magnetorheological sap cavity between described floating piston 5, cylinder cap 1 and cylinder barrel 3, form accumulation of energy chamber between described cylinder bottom 7, floating piston 5 and cylinder barrel 3, accumulation of energy intracavity is filled with nitrogen, the change in volume of magnetorheological sap cavity when stretching for compensating piston bar.
As Figure 1-Figure 5, described piston rod 4 be positioned at damping cylinder barrel end be fixed with unidirectional damping piston component and coil block.Described unidirectional damping piston component includes damping piston 15, spring leaf 16 and pad 17.Described pad 17, spring leaf 16 and damping piston 15 are fixed on the end of described piston rod 4 successively from top to bottom, are provided with damping piston sealing ring 14 between described damping piston 15 and damping cylinder barrel.Described pad 17 is for increasing the contact area of described spring leaf and described piston rod, it is prevented that owing to contact area is too small and cause spring leaf to damage；Described coil block is fixed on the piston rod 4 on the downside of described damping piston 15, what the axle center around described damping piston 15 was respectively separated is provided with several the first annular via 151 and several second annular vias 152, in the present embodiment, described first annular via 151 and the second annular via 152 are respectively equipped with four, can also be other number certainly.
Described second annular via 152 is positioned at the outside of described first annular via 151 and the aperture of described second annular via 152 aperture more than the first annular via 151, as shown in Figure 3.As it is shown in figure 5, position corresponding with described first annular via 151 on described spring leaf 16, it is provided with the spring leaf annular via 161 being connected with the first annular via 151 respectively, and the second annular via 152 is covered by spring leaf 16；As it is shown in figure 1, position corresponding with described first annular via 151 on described coil block, it is provided with the magnetic flow liquid passage being connected with the first annular via 151 respectively, and described second annular via 152 is not covered by described coil block.
As it is shown in figure 1, described coil block includes gland 8, iron core 9, magnetic conduction iron hoop 10, solenoid 11, coil jackets 12 and flux sleeve 13.The periphery of described iron core 9 is wound with solenoid 11, and the outer cover of solenoid 11 is provided with coil jackets 12, the lower end location fit of magnetic conduction iron hoop 10 and iron core 9；Gland 8 is fixed on the lower end of described iron core 9, and gland 8 is provided with gland annular via 802, the aperture of described gland annular via 802 and position and described first annular via 151 is identical；Flux sleeve 13 keeps the outside being sheathed on described iron core 9 in gap, and its upper surface coordinates with damping piston 15, and lower surface coordinates with gland 8；Gap and gland annular via 802 between spring leaf annular via the 161, first annular via 151, flux sleeve 13 and iron core 9 are sequentially communicated formation magnetic flow liquid passage.
Concrete, the parts concrete structure in the present invention is as follows:
As it is shown in figure 9, the lower end of described piston rod 4 is provided with the location shaft shoulder 402 and external screw thread 401.As shown in Figure 1, the lower end of described piston rod 4 is sequentially passed through the centre bore of pad 17, the centre bore of spring leaf 16 and the centre bore of damping piston 15 and is threadeded with the iron core 9 on coil block by external screw thread 401, and described pad 17 is connected on the described location shaft shoulder 402.
As shown in Figure 6, the top and bottom of described flux sleeve 13 are respectively equipped with magnetic conduction trepanning shoulder 131, and described flux sleeve 13 is coordinated with damping piston 15 and gland 8 respectively by magnetic conduction trepanning shoulder 131.
As shown in Figure 7, the top of described iron core 9 is provided with the iron core shaft shoulder 901, axle center is provided with centre bore, female thread 904 it is provided with in centre bore, middle part is provided with the solenoid fairlead 903 being connected with centre bore, bottom is provided with the axle collar 902, and coil jackets 12 is drawn by the iron core shaft shoulder 901, the axle collar 902 and iron core 9 location fit, the solenoid fairlead 903 gone between on iron core 9 of solenoid and the centre bore of piston rod 4.
As shown in Figure 8, described gland 8 includes being positioned at the lobe of upside and being fixed on the base portion on the downside of lobe, the periphery of described lobe is provided with gland screw thread 801, and described base portion is provided with the gland shaft shoulder 803, and described gland annular via 802 is arranged in described base portion.Described gland 8 is connected with the female thread 904 in iron core 9 centre bore by gland screw thread 801, filling with sealant 18 between the upper surface of described gland screw thread 801, the lower surface of piston rod 4 and the inner threaded surface of iron core 9.
In the present invention, described iron core 9, magnetic conduction iron hoop 10, flux sleeve 13 making material be high magnetic permeability soft magnetic materials, damping piston 15, gland 8, coil jackets 12 adopt non-magnet_conductible material to make.As shown in Figure 10, when solenoid 11 is energized, the flux loop (loop formed shown in arrow) of diagram will be formed, thus forming the magnetic field being perpendicular to magnetic flow liquid flowing direction in annular gap between flux sleeve 13 and iron core 9 and magnetic conduction iron hoop 10, when damping piston 15 moves upward, pressure effect due to epicoele magnetic flow liquid, second annular via 152 is sealed by spring leaf 16, therefore magnetic flow liquid can only flow to lower chamber from the magnetic flow liquid passage that the first annular via 151 flows into and through coil block, thus producing certain damping force, by regulating magnetic field intensity, the adjustment of damping force can be realized；When damping piston 15 moves downward, the pressure of lower chamber backs down spring leaf 16, second annular via 152 is in open mode, owing to the second annular via 152 gap is bigger, therefore most magnetic flow liquid flow to upper cavity through the second annular via 152, simultaneously because damping piston 15 is non-magnet_conductible material, in the second annular via 152, magnetic rheology effect will not be produced, thus the damping force of generation is only small, thus realizing the unidirectional damping characteristic of MR damper.
Described antivibrator is a kind of MR damper with unidirectional damping characteristic, have in a certain direction of motion damping force only small, another adjustable feature of direction of motion damping force, therefore, it is possible to give full play to vibration absorber to be subject to the cushioning effect of spring when impacting suddenly of a direction, simultaneously because unidirectional damping characteristic is adjustable, therefore antivibrator has good vibration isolation, effectiveness in vibration suppression, and has advantage applied widely.
Claims (10)
- null1. a MR damper with unidirectional damping characteristic，Including damping cylinder barrel，The lower end of described damping cylinder barrel is provided with floating piston (5)，It is magnetorheological sap cavity between upper surface and the damping cylinder barrel of floating piston (5)，Magnetic flow liquid it is provided with in it，The upper end of described damping cylinder barrel is provided with one end and extends in damping cylinder barrel，The other end is positioned at the piston rod (4) outside damping cylinder barrel，It is characterized in that: described piston rod (4) is positioned at the end of damping cylinder barrel and is fixed with unidirectional damping piston component and coil block，Described unidirectional damping piston component includes damping piston (15)、Spring leaf (16) and pad (17)，Described pad (17)、Spring leaf (16) and damping piston (15) are fixed on the end of described piston rod (4) successively from top to bottom，Described coil block is fixed on the piston rod (4) of described damping piston (15) downside，What the axle center around described damping piston (15) was respectively separated is provided with several first annular vias (151) and several the second annular vias (152)，Described second annular via (152) is positioned at the outside of described first annular via (151) and the aperture of described second annular via (152) aperture more than the first annular via (151)，In the upper position corresponding with described first annular via (151) of described spring leaf (16)，It is provided with the spring leaf annular via (161) being connected respectively with the first annular via (151)，And the second annular via (152) is covered by spring leaf (16)；Position corresponding with described first annular via (151) on described coil block, is provided with the magnetic flow liquid passage being connected respectively with the first annular via (151), and described second annular via (152) is not covered by described coil block.
- 2. there is the MR damper of unidirectional damping characteristic as claimed in claim 1, it is characterized in that: described damping cylinder barrel includes cylinder cap (1), cylinder barrel (3), floating piston (5) and cylinder bottom (7), described cylinder cap (1) is fixedly welded on the top of described cylinder barrel (3), described floating piston (5) is positioned at the cylinder barrel (3) of described coil block bottom, and be connected with cylinder barrel movable sealing, described cylinder bottom (7) is fixedly welded on the bottom of described cylinder barrel (3)；Magnetorheological sap cavity is formed between described floating piston (5), cylinder cap (1) and cylinder barrel (3), accumulation of energy chamber is formed between described cylinder bottom (7), floating piston (5) and cylinder barrel (3), accumulation of energy intracavity is filled with nitrogen, the change in volume of magnetorheological sap cavity when stretching for compensating piston bar.
- 3. there is the MR damper of unidirectional damping characteristic as claimed in claim 1, it is characterized in that: the lower end of described piston rod (4) is provided with the location shaft shoulder (402) and external screw thread (401), the lower end of described piston rod (4) is sequentially passed through the centre bore of pad (17), the centre bore of spring leaf (16) and the centre bore of damping piston (15) and is threadeded with the iron core (9) on coil block by external screw thread (401), and described pad (17) is connected on the described location shaft shoulder (402).
- null4. there is the MR damper of unidirectional damping characteristic as claimed in claim 1，It is characterized in that: described coil block includes gland (8)、Iron core (9)、Magnetic conduction iron hoop (10)、Solenoid (11)、Coil jackets (12) and flux sleeve (13)，The periphery of described iron core (9) is wound with solenoid (11)，The outer cover of solenoid (11) is provided with coil jackets (12)，The lower end location fit of magnetic conduction iron hoop (10) and iron core (9)，Gland (8) is fixed on the lower end of described iron core (9)，Gland (8) is provided with gland annular via (802)，The aperture of described gland annular via (802) and position and described first annular via (151) are identical，Flux sleeve (13) keeps the outside being sheathed on described iron core (9) in gap，And its upper surface coordinates with damping piston (15)，Lower surface coordinates with gland (8)，Spring leaf annular via (161)、First annular via (151)、Gap and gland annular via (802) between flux sleeve (13) and iron core (9) are sequentially communicated formation magnetic flow liquid passage.
- 5. there is the MR damper of unidirectional damping characteristic as claimed in claim 4, it is characterized in that: the top of described iron core (9) is provided with the iron core shaft shoulder (901), axle center is provided with centre bore, female thread (904) it is provided with in centre bore, middle part is provided with the solenoid fairlead (903) being connected with centre bore, bottom is provided with the axle collar (902), coil jackets (12) is by the iron core shaft shoulder (901), the axle collar (902) and iron core (9) location fit, the centre bore of the lead-in wire of solenoid solenoid fairlead (903) on iron core (9) and piston rod (4) is drawn.
- 6. there is the MR damper of unidirectional damping characteristic as claimed in claim 4, it is characterized in that: described gland (8) includes being positioned at the lobe of upside and being fixed on the base portion on the downside of lobe, the periphery of described lobe is provided with gland screw thread (801), described base portion is provided with the gland shaft shoulder (803), and described gland annular via (802) is arranged in described base portion.
- 7. there is the MR damper of unidirectional damping characteristic as claimed in claim 6, it is characterized in that: described gland (8) is connected with the female thread (904) in iron core (9) centre bore by gland screw thread (801), filling with sealant (18) between the upper surface of described gland screw thread (801), the lower surface of piston rod (4) and the inner threaded surface of iron core (9).
- 8. there is the MR damper of unidirectional damping characteristic as claimed in claim 4, it is characterized in that: described iron core (9), magnetic conduction iron hoop (10), flux sleeve (13) making material be high magnetic permeability soft magnetic materials, damping piston (15), gland (8), coil jackets (12) adopt non-magnet_conductible material make.
- 9. there is the MR damper of unidirectional damping characteristic as claimed in claim 4, it is characterized in that: the top and bottom of described flux sleeve (13) are respectively equipped with magnetic conduction trepanning shoulder (131), described flux sleeve (13) is takeed on (131) by magnetic conduction trepanning and is coordinated with damping piston (15) and gland (8) respectively.
- 10. there is the MR damper of unidirectional damping characteristic as claimed in claim 1, it is characterised in that: it is provided with floating piston sealing ring (6) between described floating piston (5) and damping cylinder barrel；It is provided with damping piston sealing ring (14) between described damping piston (15) and damping cylinder barrel；It is provided with cylinder cap sealing ring (2) between described piston rod (4) and damping cylinder barrel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610313665.7A CN105736624B (en) | 2016-05-12 | 2016-05-12 | Magneto-rheological damper with unidirectional damping property |
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| CN201610313665.7A CN105736624B (en) | 2016-05-12 | 2016-05-12 | Magneto-rheological damper with unidirectional damping property |
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| CN105736624A true CN105736624A (en) | 2016-07-06 |
| CN105736624B CN105736624B (en) | 2017-02-22 |
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| CN110986188A (en) * | 2019-11-13 | 2020-04-10 | 珠海格力电器股份有限公司 | Variable rigidity callus on sole, compressor and air conditioner |
| CN112815031A (en) * | 2021-02-05 | 2021-05-18 | 大连理工大学 | Viscous damper for one-way non-return movement of liquid |
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| CN113790243A (en) * | 2021-10-08 | 2021-12-14 | 浙江路得坦摩汽车部件股份有限公司 | Damping piston of magnetorheological shock absorber and production process thereof |
| CN114483863A (en) * | 2022-01-27 | 2022-05-13 | 株洲时代新材料科技股份有限公司 | Magneto-rheological damper |
| CN114718977A (en) * | 2022-05-06 | 2022-07-08 | 重庆大学 | Magnetorheological hydro-pneumatic spring |
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| CN106594160A (en) * | 2017-02-10 | 2017-04-26 | 哈尔滨工业大学 | Foldable flowing magnetorheological damper with wide adjustable range |
| CN106594160B (en) * | 2017-02-10 | 2018-12-14 | 哈尔滨工业大学 | Folding flow-type MR damper with wide adjustable extent |
| CN109099104A (en) * | 2018-10-17 | 2018-12-28 | 哈尔滨工业大学 | Water cooling temperature controlled fluid damper |
| CN110986188A (en) * | 2019-11-13 | 2020-04-10 | 珠海格力电器股份有限公司 | Variable rigidity callus on sole, compressor and air conditioner |
| CN112815031A (en) * | 2021-02-05 | 2021-05-18 | 大连理工大学 | Viscous damper for one-way non-return movement of liquid |
| CN113508690A (en) * | 2021-05-08 | 2021-10-19 | 河南科技大学 | Flexible threshing device capable of automatically adjusting threshing gap |
| CN113790243A (en) * | 2021-10-08 | 2021-12-14 | 浙江路得坦摩汽车部件股份有限公司 | Damping piston of magnetorheological shock absorber and production process thereof |
| CN113790243B (en) * | 2021-10-08 | 2022-10-18 | 浙江路得坦摩汽车部件股份有限公司 | Damping piston of magnetorheological shock absorber and production process thereof |
| CN114483863A (en) * | 2022-01-27 | 2022-05-13 | 株洲时代新材料科技股份有限公司 | Magneto-rheological damper |
| CN114718977A (en) * | 2022-05-06 | 2022-07-08 | 重庆大学 | Magnetorheological hydro-pneumatic spring |
| CN114718977B (en) * | 2022-05-06 | 2024-01-26 | 重庆大学 | Magnetorheological oil-gas spring |
| CN114857199A (en) * | 2022-05-07 | 2022-08-05 | 北京理工大学 | Small adjustable large damping linear damper |
| CN114947984A (en) * | 2022-05-20 | 2022-08-30 | 江苏启灏医疗科技有限公司 | Safe type biopsy device |
| CN114947984B (en) * | 2022-05-20 | 2024-07-12 | 江苏启灏医疗科技有限公司 | Safe living body sampling device |
| CN114909423A (en) * | 2022-06-21 | 2022-08-16 | 集美大学 | Novel magnetorheological suspensions attenuator |
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