CN2816485Y - High-performance multi-piece-rotating type magnetic current-variation damper - Google Patents
High-performance multi-piece-rotating type magnetic current-variation damper Download PDFInfo
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- CN2816485Y CN2816485Y CN 200520073319 CN200520073319U CN2816485Y CN 2816485 Y CN2816485 Y CN 2816485Y CN 200520073319 CN200520073319 CN 200520073319 CN 200520073319 U CN200520073319 U CN 200520073319U CN 2816485 Y CN2816485 Y CN 2816485Y
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Abstract
The utility model relates to a high-performance multi-piece-rotating type magnetically rheologic damper. The utility model comprises a damper mechanical device and a control circuit, wherein the damper mechanical device comprises two sleeve barrels, two moving disk sheets and a static disk sheet, wherein the sleeve barrels are respectively provided with an excitation coil, and the two sleeve barrels, the two moving disk sheets and the static disk sheet are sheathed with a rotary shaft; the static disk sheet is arranged in the middle, and one moving disk plate and one sleeve barrel are respectively arranged on both sides of the static disk sheet. A static damping sheet is permanently connected with a housing made of non-magnetic conductive material; a moving copper sleeve is arranged between the static damping sheet and moving damping sheet and the rotary shaft, the middle of the moving copper sleeve rotating along with the rotary shaft is provided with a boss, and the static damping sheet cooperates movably with an excircle of the boss; the length of the boss is larger than the thickness of the static damping sheet, the thickness of the moving damping sheet is smaller than the length of the occupied step part of the moving copper sleeve, and thus a sealing cavity in which magnetically rheologic liquid is filled is formed; a static copper sleeve which does not rotate along with the rotary shaft is arranged between the sleeve barrel and the rotary shaft; besides, both sides of the sleeve barrel are respectively provided with an end cover and a rolling bearing is respectively embedded into a middle hole of each end cover. The utility model raises greatly damping torque values by adopting the measures of decreasing working gaps filling with the magnetically rheologic liquid, increasing the area and the number of damping sheets, making magnetic fields sealed inside a damper, etc.
Description
Technical field
The utility model relates to the magnetic flow liquid application technology, is specifically related to the magnetorheological fluid damp device.
Background technique
Magnetic flow liquid is an important branch in the intellectual material family.Magnetic flow liquid shows as the good Newtonian fluid of mobile performance under the null field situation, its apparent viscosity is very little; And can be in the short time of millisecond magnitude under strong magnetic field action, its apparent viscosity increases by two and presents the class solid property more than the order of magnitude, and change procedure is a continuous reversible.In the prior art, utilize the characteristics that the magnetic rheology effect response is rapid and be easy to control, designed and be applicable to initiatively and comparatively complete electronic products such as the damper of half ACTIVE CONTROL, break, clutch, hydrovalve, seal arrangement, outstanding advantages such as they have in light weight, and are highly sensitive, that response is fast, the little pollution-free and energy consumption of noise is low.But particularly shear yield stress is not high owing to the performance of magnetic flow liquid own, and factor affecting such as device heat radiation in addition, physical dimension make magnetorheological device application field be subjected to severely restricts.
The mode of operation of magnetic flow liquid in device has three kinds of shearing, extruding and mixing; According to magnetic flow liquid mode of operation difference, damper correspondingly is divided into linear type and rotary two big classes.
At present, the MR damper product of U.S. LORD company research and design is the most representative, successfully is applied to the vibration damping of automotive seat.Domestic this type of damping device is confined to the linear type damper more.A kind of rotary type damper is disclosed in the CN200320120247.4 patent (combined type magnetorheological rotary damper).Also have CN01244463.4 (rotary magnetic rheological liquid damper) etc. in addition, these rotary type dampers all only use single damping disc, and the medium working clearance more than 1mm, this makes that the damping torque of its acquisition is less, has limited its using scope; Their exciting current is bigger simultaneously, makes the coil heating amount big, causes and can't normally use for a long time.In addition, yet exist the magnetic field loss bigger, the defective that working efficiency is not high.
The model utility content
The utility model purpose is to overcome the prior art deficiency, and a kind of dynamic shearing moment height, heat dissipation is good and loss of field is little magnetorheological rotary damper are provided.
The utility model solution is as follows:
Magnetorheological rotary damper of the present utility model comprises damper mechanical device and control circuit two-part, described damper mechanical device comprises field coil, damping disc and fills the sealed cavity of magnetic flow liquid, it is characterized in that described damper mechanical device comprises two sleeves that are built-in with field coil, two Moving plate sheets and the quiet disc of a slice, the three is equipped with mesopore, and all be sleeved on the running shaft, in the middle of quiet disc was positioned at, a Moving plate sheet and a sleeve that is built-in with field coil were respectively put in both sides.The external diameter of quiet disc and two sleeves is identical, and its periphery is provided with the shell of being made by non-magnet material, and quiet damping fin and shell connect firmly.Between quiet, dynamic damping sheet and running shaft, be provided with and rotate (for example key cooperates) and the middle moving copper sheathing that boss is arranged with axle, between the boss cylindrical of quiet damping fin and moving copper sheathing for movingly, for connecting firmly, stop the axial play of Moving plate sheet between the dynamic damping sheet of both sides and the moving copper sheathing.The length of boss is greater than quiet damping fin thickness, dynamic damping sheet thickness is less than the length of shared copper sheathing step part, difference between the two all in the 0.6-2mm scope, make between quiet, the dynamic damping sheet and dynamic damping sheet and the sleeve that is equipped with field coil between formation hold the sealed cavity of magnetic flow liquid; Be provided with the quiet copper sheathing that does not rotate (movingly) between sleeve and running shaft, this sleeve and quiet copper sheathing interference fit with axle; The described sleeve outside that is built-in with field coil is respectively equipped with end cap, and this end cap and shell and sleeve all connect firmly, and the external cord of field coil is drawn with power supply and is communicated with by being located at line hole on the end cap; The place is embedded with passive rolling bearing at the end cap mesopore; On shell, be provided with in order to inject the aperture and the sealing device of magnetic flow liquid.
Can be in actual the use according to the needs of shearing moment, increase quiet damping fin to two slice or more than two, the dynamic damping sheet is increased to more than three or three, the boss number of moving copper sheathing is identical with quiet damping fin number.
In order to prevent the leakage of magnetic flow liquid, must seal, remove to improve respectively to assemble slightly to make between surface of contact and be outside one's consideration, adopt sealer, flexible thin pad, O type teflon circle to implement sealing respectively according to the kinetic property between the component, can reach the double action that seals and reduce mechanical friction resistance.
The utility model damper, owing to used cover in the non-magnetic conduction, magnetic field is pushed to damping disc outer rim effectively, equal the theory of the each several part damping force sum of products on the damping arm of force and the damping fin according to damping torque, this design has increased the damping arm of force of effective magnetic field, thereby improves the dynamic antivibration moment values significantly.On the other hand, magnetic loop of the present utility model is coil, end cap, axis, side end cap, sleeve, damping fin, magnetic flow liquid, coil in addition, make axis become the part of magnetic circuit, shell need not be passed through in magnetic field, this just makes shell can adopt non-magnet material to make, and not only can save fabricating cost, and more important is to be enclosed in damper inside to magnetic field effectively, prevent from and reduce magnetic field to leak, also can increase heat diffusion area simultaneously and strengthen radiating effect.Compared with prior art, the utility model can be by the measures such as working clearance width, increase damping fin area and increase damping fin number that reduce to hold magnetic flow liquid, increase magnetic flow liquid and damping fin surface area of contact, thereby increase substantially the damping torque value, solve the too small difficult problem of traditional single damping fin dynamic shearing moment, and advantages such as structure is comparatively compact, easy to process are arranged.The utility model damper can be used in a plurality of fields such as gymnastic apparatus, automobile, aviation.
Description of drawings
Fig. 1 is the utility model damper embodiment's a structural representation.
Fig. 2 is the utility model embodiment's a Magnetic field distribution schematic representation.
Specific implementation
Referring to accompanying drawing 1, this damper external form overall dimensions is respectively diameter 180mm, thickness 120mm.Aluminium shell 1 connects firmly quiet damping fin 13 and end cap 2 by sunk screw; The 3rd, be built-in with the sleeve of field coil 10,4 is quiet copper sheathing, 5 is running shaft, between sleeve 3 and the quiet copper sheathing 4 is interference fit, and installs O type teflon circle 6 additional and implement sealing, between quiet copper sheathing 4 and the running shaft 5 for movingly, that is to say, when running shaft 5 was in rotation status, quiet copper sheathing 4 is transfixion still, and quiet copper sheathing internal surface and axis outer surface adopt the little O type teflon circle of mechanical friction resistance 6 to implement sealing.The 9th, with the moving copper sheathing of running shaft 5 interference fit, there is a boss at its middle part, quiet damping fin 13 is sleeved on herein, for movingly, two dynamic damping sheets 12 are installed in the step place at moving copper sheathing two ends respectively between the two, and are axially respectively connecting firmly with two sunk screws and moving copper sheathing boss, anti-locking plate axial float, when running shaft 5 was in rotation status, moving copper sheathing 9 and two dynamic damping sheets 12 were all being followed synchronously and are being rotated, and quiet damping fin 13 transfixion still.Wherein, the length of moving copper sheathing boss is 9.5mm, and quiet damping fin 13 thickness are 8mm, and both differences are the sealed cavity width that holds magnetic flow liquid 11; Also for holding the sealed cavity of magnetic flow liquid, the gap is similarly 0.8mm between Moving plate sheet and the sleeve interior surface.This width is controlled at 0.6-2mm usually, and present embodiment is selected 0.8mm for use.The 8th, passive rolling bearing, its inner ring and running shaft 5 interference assembling, the outer ring is fixed in end cap 2 inboard aperture.7 for being located on the aluminium shell aperture and the sealing device in order to the filling magnetic flow liquid, has four.
Referring to Fig. 2, when this damper in running order, be that field coil is when being switched on power supply, the magnetic line of force along coil 10, end cap 2, axis 5, side end cap 2, damping disc 12,13, magnetic flow liquid 11, coil 10 constitute loops in addition, because the shielding action of aluminium shell and interior copper sheathing, effectively controlling magnetic field loop direction and scope, to greatest extent magnetic field is guided into the damping fin outer rim, and be enclosed in the shell, thereby increase damping arm of force value, improve damping torque.
The control circuit part that present embodiment uses is prior art, it comprises control signal loop that control panel, sensor, power supply etc. form and the field current driving loop that is formed by control panel, ammeter, power supply, field coil winding etc., and its used power supply is a DC electrical source.
Embodiment's working procedure: after sensor obtains the extraneous moment values signal that requires, signal is passed to control loop, decision is loaded into electric current opportunity on the field coil, current amplitude etc. to power source generator according to control signal, realizes the damper continuous control.So produce the excitation field of respective strengths in the magnetic flow liquid working zone, MRF viscosity sharply increases, solid-liquid phase change takes place, produce magnetic rheology effect, obtain damping torque, rotary shaft rotating speed is reduced or stop.This damper is installed on the training athlete rehabilitation machines, replaces traditional mechanical friction type damping device, and impede motion person reaches the purpose of training leg muscle by the rotation of foot treadle driven rotary axle.
Claims (2)
1. high performance, multiple plates, revolving type magnetic rheologic damper, comprise damper mechanical device and control circuit two-part, described damper mechanical device comprises field coil, damping disc and fills the sealed cavity of magnetic flow liquid, it is characterized in that described damper mechanical device comprises two sleeves that are built-in with field coil, two Moving plate sheets and the quiet disc of a slice, the three is equipped with mesopore, and all be sleeved on the running shaft, in the middle of quiet disc was positioned at, a Moving plate sheet and a sleeve that is built-in with field coil were respectively put in both sides; The external diameter of quiet disc and two sleeves is identical, and its periphery is provided with the shell of being made by non-magnet material, and quiet damping fin and shell connect firmly; Between quiet, dynamic damping sheet and running shaft, be provided with axle and rotate and the middle moving copper sheathing that boss is arranged, between the boss cylindrical of quiet damping fin and moving copper sheathing for movingly, between the dynamic damping sheet of both sides and the moving copper sheathing for connecting firmly the axial play of prevention Moving plate sheet; The length of boss is greater than quiet damping fin thickness, dynamic damping sheet thickness is less than the length of shared copper sheathing step part, difference between the two all in the 0.6-2mm scope, make between quiet, the dynamic damping sheet and dynamic damping sheet and the sleeve that is equipped with field coil between formation hold the sealed cavity of magnetic flow liquid; Be provided with the quiet copper sheathing that does not rotate between sleeve and running shaft, this sleeve and quiet copper sheathing interference fit with axle; The described sleeve outside that is built-in with field coil is respectively equipped with end cap, and this end cap and shell and sleeve all connect firmly, and the external cord of field coil is drawn with power supply and is communicated with by being located at line hole on the end cap; The place is embedded with passive rolling bearing at the end cap mesopore; On shell, be provided with in order to inject the aperture and the sealing device of magnetic flow liquid.
2. high performance, multiple plates, revolving type magnetic rheologic damper as claimed in claim 1, it is characterized in that described quiet damping fin is increased to two or two when above, the dynamic damping sheet is increased to more than three or three, and the boss number of moving copper sheathing is identical with quiet damping fin number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073319 CN2816485Y (en) | 2005-06-30 | 2005-06-30 | High-performance multi-piece-rotating type magnetic current-variation damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073319 CN2816485Y (en) | 2005-06-30 | 2005-06-30 | High-performance multi-piece-rotating type magnetic current-variation damper |
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| Publication Number | Publication Date |
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| CN2816485Y true CN2816485Y (en) | 2006-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200520073319 Expired - Lifetime CN2816485Y (en) | 2005-06-30 | 2005-06-30 | High-performance multi-piece-rotating type magnetic current-variation damper |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350171C (en) * | 2005-06-30 | 2007-11-21 | 中国科学技术大学 | High performance, multiple plates, revolving type magnetic rheologic damper |
| CN102168736A (en) * | 2011-05-05 | 2011-08-31 | 天津大学 | Magnetorheological torsional vibration damper for engine |
| CN102249136A (en) * | 2010-05-18 | 2011-11-23 | 沈阳优力机电设备有限公司 | Gear-free tractor with magnetorheological fluid brake |
| CN103962883A (en) * | 2014-05-30 | 2014-08-06 | 上海理工大学 | Dynamic vibration-absorption turning tool based on extruding working mode of magnetorheological fluid |
| CN107340783A (en) * | 2017-07-12 | 2017-11-10 | 华南农业大学 | Two degrees of freedom haptic remote control and its control method based on magnetic flow liquid |
| CN108050189A (en) * | 2017-11-08 | 2018-05-18 | 江苏大学 | A kind of intelligent phonon crystal isolator based on magnetorheological plastic body |
-
2005
- 2005-06-30 CN CN 200520073319 patent/CN2816485Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350171C (en) * | 2005-06-30 | 2007-11-21 | 中国科学技术大学 | High performance, multiple plates, revolving type magnetic rheologic damper |
| CN102249136A (en) * | 2010-05-18 | 2011-11-23 | 沈阳优力机电设备有限公司 | Gear-free tractor with magnetorheological fluid brake |
| CN102249136B (en) * | 2010-05-18 | 2015-04-08 | 沈阳优力机电设备有限公司 | Gear-free tractor with magnetorheological fluid brake |
| CN102168736A (en) * | 2011-05-05 | 2011-08-31 | 天津大学 | Magnetorheological torsional vibration damper for engine |
| CN102168736B (en) * | 2011-05-05 | 2012-07-11 | 天津大学 | Magnetorheological torsional vibration damper for engine |
| CN103962883A (en) * | 2014-05-30 | 2014-08-06 | 上海理工大学 | Dynamic vibration-absorption turning tool based on extruding working mode of magnetorheological fluid |
| CN103962883B (en) * | 2014-05-30 | 2016-06-08 | 上海理工大学 | The dynamic absorber lathe tool of mode of operation is extruded based on magnetic flow liquid |
| CN107340783A (en) * | 2017-07-12 | 2017-11-10 | 华南农业大学 | Two degrees of freedom haptic remote control and its control method based on magnetic flow liquid |
| CN107340783B (en) * | 2017-07-12 | 2020-04-17 | 华南农业大学 | Two-degree-of-freedom touch remote controller based on magnetorheological fluid and control method thereof |
| CN108050189A (en) * | 2017-11-08 | 2018-05-18 | 江苏大学 | A kind of intelligent phonon crystal isolator based on magnetorheological plastic body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20071121 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20071121 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |