CN113983109A - Composite shock absorber based on metal rubber and magnetorheological effect and working method thereof - Google Patents
Composite shock absorber based on metal rubber and magnetorheological effect and working method thereof Download PDFInfo
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- CN113983109A CN113983109A CN202111369989.XA CN202111369989A CN113983109A CN 113983109 A CN113983109 A CN 113983109A CN 202111369989 A CN202111369989 A CN 202111369989A CN 113983109 A CN113983109 A CN 113983109A
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- damping cylinder
- pressure plate
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- 229920001967 Metal rubber Polymers 0.000 title claims abstract description 62
- 230000000694 effects Effects 0.000 title claims abstract description 29
- 230000035939 shock Effects 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000013016 damping Methods 0.000 claims abstract description 65
- 239000012530 fluid Substances 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 238000010008 shearing Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 8
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 238000005520 cutting process Methods 0.000 description 1
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- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
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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
-
- 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
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/362—Combination of sealing and guide arrangements for piston rods
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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
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/369—Sealings for elements other than pistons or piston rods, e.g. valves
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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
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/025—Elastomers
-
- 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
- F16F2224/00—Materials; Material properties
- F16F2224/04—Fluids
- F16F2224/045—Fluids magnetorheological
Abstract
The invention relates to a composite shock absorber based on metal rubber and magneto-rheological effect and a working method thereof, wherein the composite shock absorber comprises a shock absorption cylinder body and a coil mechanism positioned on the periphery of the shock absorption cylinder body; the damping cylinder is internally provided with a pressure plate which divides the inner space of the damping cylinder into an upper cavity and a lower cavity, the upper end of the pressure plate is connected with a piston rod which penetrates out of the upper end of the damping cylinder, magnetorheological fluid is filled in the damping cylinder, an upper cavity above the pressure plate is filled with an upper metal rubber element, and a lower cavity below the pressure plate is filled with a lower metal rubber element. The composite vibration damper based on the metal rubber and the magneto-rheological effect is simple and reliable in structure, adopts a solid-liquid composite vibration damping mode with the metal rubber as a main component and the magneto-rheological effect as an auxiliary component, enhances the rigidity of a metal rubber damping element, improves the vibration damping performance of the whole device, and has the characteristics of high controllability and high reliability.
Description
Technical Field
The invention relates to the technical field of vibration reduction and buffering, in particular to a composite vibration absorber based on metal rubber and magneto-rheological effect and a working method thereof.
Background
Since harmful vibrations in most cases have a harmful effect on the operation of the machine, the design of damping the mechanical vibrations and cutting off the transmission of the vibrations is a critical part of the reliability of the operation of the machine, and the shock absorbers have become an indispensable and important device for civil and military equipment. Especially, in the field of vibration reduction, the requirements on the aspects of intelligence, high efficiency, reliability and the like are higher and higher in recent years, and the development of a controllable, high-efficiency and reliable vibration reducer which is suitable for various mechanical equipment with severe working conditions becomes very valuable.
Although the existing active control shock absorber is mature, most of the shock absorbers need a working environment after precision maintenance and are high in cost, and the shock absorber used on the traditional heavy equipment and high in reliability lacks precision, is low in controllability and has a low upper limit on the shock absorbing effect.
Disclosure of Invention
In view of the above, the invention aims to provide a composite damper based on metal rubber and magnetorheological effects and having high controllability, high reliability and good damping performance and a working method thereof.
The invention is realized by adopting the following scheme: a composite shock absorber based on metal rubber and magneto-rheological effect comprises a shock absorption cylinder body and a coil mechanism positioned on the periphery of the shock absorption cylinder body; the damping cylinder is internally provided with a pressure plate which divides the inner space of the damping cylinder into an upper cavity and a lower cavity, the upper end of the pressure plate is connected with a piston rod which penetrates out of the upper end of the damping cylinder, magnetorheological fluid is filled in the damping cylinder, an upper cavity above the pressure plate is filled with an upper metal rubber element, and a lower cavity below the pressure plate is filled with a lower metal rubber element.
Furthermore, the coil mechanism comprises a coil rack located on the periphery of the damping cylinder body, the coil rack is composed of an annular base and a hexagonal frame body located on the upper side of the annular base, magnetic field mandrels perpendicular to each side are fixedly connected to the inner sides of each side of the hexagonal frame body, the inward end of each magnetic field mandrel is close to the outer side wall of the damping cylinder body, magnetic field coils are wound on the magnetic field mandrels, and the N-S poles of magnetic fields generated by the magnetic field coils on two adjacent magnetic field mandrels are opposite in direction.
Furthermore, the coil rack is formed by splicing two half-and-half rack bodies which are divided along a diagonal line of the hexagonal frame body; the magnetic field dabber section is the square, the magnetic field dabber adopts the silicon steel material, and the magnetic field dabber is equipped with the mounting panel towards one end outward, the mounting panel passes through bolt fixed connection in the hexagon framework.
Furthermore, a fixed seat is arranged at the bottom of the damping cylinder body, and the diameter of the fixed seat is smaller than that of an inner hole of the annular base; the damping cylinder body upper end is equipped with flange, flange has the end cover through bolted connection, set up the through-hole that supplies the piston rod to pass in the middle of the end cover, be equipped with first sealing washer in the through-hole, press from both sides between end cover and the flange and be equipped with the second sealing washer.
When impact force or pulling force is input from the outside, the upper end of the piston rod transmits acting force to the bottom pressure plate part, so that the pressure plate reciprocates between the upper metal rubber element and the lower metal rubber element to generate displacement, at the moment, the volumes of the upper cavity and the lower cavity are changed due to the compressibility of the metal rubber, and the magnetorheological fluid has the tendency of flowing through a shearing gap; when the magnetic field coil is not electrified or no instruction signal is input, the damping force is completely generated by the metal rubber damping structure soaked in the magnetorheological fluid, when the magnetic field coil is activated according to an external given electric signal to generate a magnetic field, the magnetorheological fluid flowing upwards or downwards in the shearing gap generates a rheological effect under the action of the magnetic field to generate shearing damping force, and in addition, the magnetorheological fluid in the upper metal rubber element and the lower metal rubber element also generates a tendency of converting to semisolid due to the effect of the magnetic field, so that the rigidity and the damping of the metal rubber element are enhanced.
Compared with the prior art, the invention has the following beneficial effects: the composite vibration damper based on the metal rubber and the magneto-rheological effect is simple and reliable in structure, adopts a solid-liquid composite vibration damping mode with the metal rubber as a main component and the magneto-rheological effect as an auxiliary component, enhances the rigidity of a metal rubber damping element, improves the vibration damping performance of the whole device, and has the characteristics of high controllability and high reliability; the external magnetic field is adopted, the adverse phenomenon that the performance of the magnetorheological fluid is reduced due to the heating of the coil in the running process can be avoided, the working environment of the coil is visible, and the safety in power-on running is improved.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.
Drawings
FIG. 1 is a schematic view of the overall configuration of an embodiment of the present invention;
FIG. 2 is a sectional view of a shock-absorbing cylinder in the embodiment of the present invention;
fig. 3 is a schematic view of a half structure of a bobbin in an embodiment of the present invention;
the reference numbers in the figures illustrate: 1. a vibration damping cylinder body; 2. a nut; 3. a nut washer; 4. an end cap; 5. a bolt washer; 6. a bolt; 7. a piston rod; 8. a first seal ring; 9. a second seal ring; 10. an upper metal rubber element; 11. a lower metal rubber element; 12. an annular base; 13. a magnetic field mandrel; 14-a platen; 15-hexagonal frame body.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1 to 3, a composite damper based on metal rubber and magnetorheological effects comprises a damping cylinder body 1 and a coil mechanism located at the periphery of the damping cylinder body 1; a pressure plate 14 which divides the inner space of the damping cylinder body 1 into an upper cavity and a lower cavity is arranged in the damping cylinder body 1, the upper end of the pressure plate 14 is connected with a piston rod 7 which penetrates out of the upper end of the damping cylinder body 1, and the upper end of the piston rod is provided with a threaded part so as to be connected with a part to be subjected to vibration isolation; magnetorheological fluid is filled in the damping cylinder body 1 to form a magnetorheological fluid environment, an upper metal rubber element 10 is filled in an upper cavity above the pressure plate 14, and a lower metal rubber element 11 is filled in a lower cavity below the pressure plate. The invention adopts the scheme of a solid-liquid composite damper with metal rubber as a main part and magnetorheological effect as an auxiliary control, and uses the working form that a metal rubber damping element is soaked in a magnetorheological fluid environment, under the action of a magnetic field and external pressure, the magnetorheological fluid can generate shearing damping force through a shearing gap by the combined action of capillary effect and volume change, and when a metal rubber element is made of a material with higher magnetic conductivity, the magnetorheological fluid can also generate rheological effect between metal wires in the metal rubber element, so that the rigidity of the metal rubber damping element is enhanced, and the damping performance of the whole device is improved; therefore, the damper can enable the magnetorheological fluid to generate various action forms under the same magnetic field, improves the exertion degree of the performance of the magnetorheological fluid, can generate more ideal damping performance, is intelligent and controllable, can gradually develop a matched control program suitable for the running characteristics of different equipment in actual tests and production, and has wide actual application prospect; the external magnetic field is adopted, the adverse phenomenon that the performance of the magnetorheological fluid is reduced due to the heating of the coil in the running process can be avoided, the working environment of the coil is visible, and the safety in power-on running is improved.
In this embodiment, the coil mechanism includes a coil frame located at the periphery of the damping cylinder, the coil frame is composed of an annular base 12 and a hexagonal frame 15 located at the upper side of the annular base, and the annular base is provided with mounting holes for fixing the coil frame and the magnetic field coil, and the magnetic field coil after being mounted is located at the optimal acting position. The inner sides of all sides of the hexagonal frame body 15 are fixedly connected with magnetic field mandrels 13 perpendicular to all sides, the inward ends of the magnetic field mandrels 13 are close to the outer side wall of the damping cylinder body, magnetic field coils (not shown in the figure) are wound on the magnetic field mandrels 13, and the N-S poles of magnetic fields generated by the magnetic field coils on two adjacent magnetic field mandrels are opposite in direction; therefore, each magnetic field forms a conducting magnetic circuit with the shortest path after being electrified, the magnetic field loss is reduced, the magnetic field of the axial winding is adopted to influence the magnetorheological fluid so as to generate the magnetorheological effect, higher magnetic induction intensity is generated in a shearing gap by less current, and the magnetic circuit is reasonable in structure.
In this embodiment, the coil frame is formed by splicing two half frame bodies divided along a diagonal line of a hexagonal frame body; the section of the magnetic field mandrel 13 is square, the magnetic field mandrel 13 is made of silicon steel, the mandrel and the shell made of the silicon steel reduce magnetic circuit loss, the main action part of the whole magnetic circuit is designed in the stroke range of shearing caused by the up-and-down movement of the piston, and the magnetic field utilization rate is high. The outward end of the magnetic field mandrel is provided with an installation plate, the installation plate is fixedly connected to the hexagonal frame body through bolts, and bolt holes used for connecting the installation plate are formed in each side of the hexagonal frame body; the ribbed plate is arranged between the annular base and the hexagonal frame body to enhance the rigidity of the coil rack after the coil is installed, and after the magnetic core shaft with the wound coil is installed, the coil rack cannot be excessively inclined inwards to cause position interference among components.
In this embodiment, a fixed seat is arranged at the bottom of the damping cylinder body 1, and a mounting hole is also formed in the fixed seat, and the mounting hole of the fixed seat can be used for connecting a vibration-isolated component or a fixed base; the diameter of the fixed seat is smaller than the diameter of the inner hole of the annular base; the damping cylinder body upper end is equipped with flange, flange has end cover 4 through bolted connection, set up the through-hole that supplies the piston rod to pass in the middle of the end cover 4, be equipped with first sealing washer 8 in the through-hole, press from both sides between end cover and the flange and be equipped with second sealing washer 9, the sealing washer adopts the fluorine rubber sealing washer.
The damper has the advantages that the structure is simple and reliable, the main damping force is generated by a stable and reliable metal rubber damping structure, the damping force generated by shearing and extruding of the electromagnetic control magnetorheological fluid is taken as an additional part generated intelligently according to needs, so that the damper has the characteristics of high controllability and high reliability, and even under the special condition of signal interruption, a certain damping force can be generated by an internal metal rubber damping element so as not to be failed integrally; and because the metal rubber component is strong interchangeability, can make the metal rubber component of different wire diameters, density and performance attributes to replace according to the real needs at any time, make the serviceability of this shock absorber extensive.
The installation process of the composite damper comprises the following steps: firstly, it is ensured that each independent magnetic field core shaft 13 is uniformly wound with a magnetic field coil, and the winding direction needs to be paid attention to, so that the N-S poles of the magnetic fields generated by the coils on the two magnetic field core shafts adjacent to each other in the spatial position are opposite, after the coils on the magnetic field core shafts are correctly wound, the magnetic field core shafts 13 and the coil rack 12 can be installed together through corresponding holes on the installation plate by using bolts and nuts, and the two ends of a lead are stripped out for standby.
The installation work of the main body of the damper can be firstly carried out after the external magnetic field is correctly installed, firstly, the lower metal rubber element 11 is arranged at the bottom in the cylinder body 1 of the damper, then, a pressure plate with a piston rod is arranged on the lower metal rubber element 11, then, the upper metal rubber element 10 is sleeved into the damper cylinder body 1 along the piston rod, magnetorheological fluid can be filled into the damper cylinder after the checking is correct, the working magnetorheological fluid environment is constructed, when the magnetorheological fluid just does not sink the upper surface of the upper metal rubber element 10, stopping filling liquid, at the moment, correctly installing the second sealing ring 9 in a sealing ring groove reserved on the connecting flange, then taking the end cover 4, correctly sleeving the first sealing ring 8 in the sealing ring groove in the through hole of the end cover, the through hole of the end cover is sleeved into the piston rod, and the end cover 4 and the connecting flange can be correctly connected and fixed by using the nut 2, the nut gasket 3, the bolt gasket 5 and the bolt 6 after correct installation.
After the shock absorber main body is assembled, the shock absorber main body is connected with a part to be subjected to vibration isolation through a mounting hole of a bottom fixing seat of the shock absorbing cylinder body 1 and threads on the upper part of a piston rod 7, then a coil mechanism which is assembled before is fixed outside the shock absorbing cylinder body through a mounting hole of a bottom annular base, and the bottom surfaces of a coil rack and the shock absorbing cylinder body 1 are ensured to be in the same plane when the shock absorber main body is installed, so that the mounting position can ensure that a magnetic field is in the most effective position with the highest working efficiency during work; after that, the lead is correctly connected to the external control device, and the work can be started.
When impact force or pulling force is input from the outside, the upper end of the piston rod transmits acting force to the bottom pressure plate part, so that the pressure plate reciprocates between the upper metal rubber element and the lower metal rubber element to generate displacement, at the moment, the volumes of the upper cavity and the lower cavity are changed due to the compressibility of the metal rubber, and the magnetorheological fluid has the tendency of flowing through a shearing gap; when the magnetic field coil is not electrified or no instruction signal is input, the damping force is completely generated by the metal rubber damping structure soaked in the magnetorheological fluid, when the magnetic field coil is activated according to an external given electric signal to generate a magnetic field, the magnetorheological fluid flowing upwards or downwards in the shearing gap generates a rheological effect under the action of the magnetic field to generate shearing damping force, and in addition, the magnetorheological fluid in the upper metal rubber element and the lower metal rubber element also generates a tendency of converting to semisolid due to the effect of the magnetic field, so that the rigidity and the damping of the metal rubber element are enhanced.
The damping and the rigidity of the damper can be stably and efficiently controlled by controlling the current magnitude through the outside under the combined action of multiple effects.
Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.
If the invention discloses or relates to parts or structures which are fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (5)
1. A composite shock absorber based on metal rubber and magneto-rheological effect is characterized in that: the damping cylinder comprises a damping cylinder body and a coil mechanism positioned on the periphery of the damping cylinder body; the damping cylinder is internally provided with a pressure plate which divides the inner space of the damping cylinder into an upper cavity and a lower cavity, the upper end of the pressure plate is connected with a piston rod which penetrates out of the upper end of the damping cylinder, magnetorheological fluid is filled in the damping cylinder, an upper cavity above the pressure plate is filled with an upper metal rubber element, and a lower cavity below the pressure plate is filled with a lower metal rubber element.
2. The composite vibration damper based on metal rubber and magnetorheological effects according to claim 1, wherein: the coil mechanism comprises a coil frame located on the periphery of the damping cylinder body, the coil frame is composed of an annular base and a hexagonal frame body located on the upper side of the annular base, magnetic field mandrels perpendicular to all sides are fixedly connected to the inner sides of all sides of the hexagonal frame body, the inward end of each magnetic field mandrel is close to the outer side wall of the damping cylinder body, magnetic field coils are wound on the magnetic field mandrels, and the N-S poles of magnetic fields generated by the magnetic field coils on the two adjacent magnetic field mandrels are opposite in direction.
3. The composite vibration damper based on metal rubber and magnetorheological effects according to claim 2, wherein: the coil rack is formed by splicing two half-and-half rack bodies which are divided along a diagonal line in the hexagonal rack body; the magnetic field dabber section is the square, the magnetic field dabber adopts the silicon steel material, and the magnetic field dabber is equipped with the mounting panel towards one end outward, the mounting panel passes through bolt fixed connection in the hexagon framework.
4. The composite vibration damper based on metal rubber and magnetorheological effects according to claim 2, wherein: the bottom of the damping cylinder body is provided with a fixed seat, and the diameter of the fixed seat is smaller than the diameter of an inner hole of the annular base; the damping cylinder body upper end is equipped with flange, flange has the end cover through bolted connection, set up the through-hole that supplies the piston rod to pass in the middle of the end cover, be equipped with first sealing washer in the through-hole, press from both sides between end cover and the flange and be equipped with the second sealing washer.
5. The working method of the composite damper based on metal rubber and magneto-rheological effect as claimed in claim 2, characterized in that: when impact force or pulling force is input from the outside, the upper end of the piston rod transmits the acting force to the bottom pressure plate part, so that the pressure plate reciprocates between the upper metal rubber element and the lower metal rubber element to generate displacement, at the moment, the volumes of the upper cavity and the lower cavity are changed due to the compressibility of the metal rubber, and the magnetorheological fluid has the tendency of flowing through a shearing gap; when the magnetic field coil is not electrified or no instruction signal is input, the damping force is completely generated by the metal rubber damping structure soaked in the magnetorheological fluid, when the magnetic field coil is activated according to an external given electric signal to generate a magnetic field, the magnetorheological fluid flowing upwards or downwards in the shearing gap generates a rheological effect under the action of the magnetic field to generate shearing damping force, and in addition, the magnetorheological fluid in the upper metal rubber element and the lower metal rubber element also generates a tendency of converting to semisolid due to the effect of the magnetic field, so that the rigidity and the damping of the metal rubber element are enhanced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111369989.XA CN113983109B (en) | 2021-11-18 | 2021-11-18 | Composite shock absorber based on metal rubber and magnetorheological effect and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111369989.XA CN113983109B (en) | 2021-11-18 | 2021-11-18 | Composite shock absorber based on metal rubber and magnetorheological effect and working method thereof |
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| Publication Number | Publication Date |
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| CN113983109A true CN113983109A (en) | 2022-01-28 |
| CN113983109B CN113983109B (en) | 2023-12-22 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2551806Y (en) * | 2002-06-26 | 2003-05-21 | 重庆大学 | Magnetic rheological liquid vibration-damper for automobile |
| CN101319699A (en) * | 2008-07-11 | 2008-12-10 | 重庆大学 | Magneto-rheological fluid vibration damper with ring-shaped external magnetic field generator |
| CN101725660A (en) * | 2009-12-17 | 2010-06-09 | 哈尔滨工业大学 | High-frequency decoupling piston magneto-rheological damper |
| US20150021130A1 (en) * | 2012-03-01 | 2015-01-22 | Kayaba Industry Co., Ltd. | Magnetorheological fluid shock absorber |
| CN109158563A (en) * | 2018-10-31 | 2019-01-08 | 燕山大学 | Continuous cast mold magnetic stirrer with resultant field |
| CN112360915A (en) * | 2020-08-20 | 2021-02-12 | 武汉理工大学 | Novel magnetorheological fluid shock absorber |
| CN112923001A (en) * | 2021-01-29 | 2021-06-08 | 中国劳动关系学院 | Circumferential excitation magnetorheological damper |
| CN216279145U (en) * | 2021-11-18 | 2022-04-12 | 福州大学 | Composite shock absorber based on metal rubber and magnetorheological effect |
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2021
- 2021-11-18 CN CN202111369989.XA patent/CN113983109B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2551806Y (en) * | 2002-06-26 | 2003-05-21 | 重庆大学 | Magnetic rheological liquid vibration-damper for automobile |
| CN101319699A (en) * | 2008-07-11 | 2008-12-10 | 重庆大学 | Magneto-rheological fluid vibration damper with ring-shaped external magnetic field generator |
| CN101725660A (en) * | 2009-12-17 | 2010-06-09 | 哈尔滨工业大学 | High-frequency decoupling piston magneto-rheological damper |
| US20150021130A1 (en) * | 2012-03-01 | 2015-01-22 | Kayaba Industry Co., Ltd. | Magnetorheological fluid shock absorber |
| CN109158563A (en) * | 2018-10-31 | 2019-01-08 | 燕山大学 | Continuous cast mold magnetic stirrer with resultant field |
| CN112360915A (en) * | 2020-08-20 | 2021-02-12 | 武汉理工大学 | Novel magnetorheological fluid shock absorber |
| CN112923001A (en) * | 2021-01-29 | 2021-06-08 | 中国劳动关系学院 | Circumferential excitation magnetorheological damper |
| CN216279145U (en) * | 2021-11-18 | 2022-04-12 | 福州大学 | Composite shock absorber based on metal rubber and magnetorheological effect |
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