CN203285901U - Variable-stiffness variable-damping bump leveler based on magneto-rheological fluid characteristics - Google Patents
Variable-stiffness variable-damping bump leveler based on magneto-rheological fluid characteristics Download PDFInfo
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- CN203285901U CN203285901U CN2013201595960U CN201320159596U CN203285901U CN 203285901 U CN203285901 U CN 203285901U CN 2013201595960 U CN2013201595960 U CN 2013201595960U CN 201320159596 U CN201320159596 U CN 201320159596U CN 203285901 U CN203285901 U CN 203285901U
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Abstract
The utility model discloses a variable-stiffness variable-damping bump leveler based on magneto-rheological fluid characteristics. The characteristics of magneto-rheological fluid are changed according to vibration data detected by a vibration sensor so as to change the stiffness and damping of the bump leveler, realize the adjustment of inherent frequency of the bump leveler, and achieve the optimal vibration absorption effect. The variable-stiffness variable-damping bump leveler based on the magneto-rheological fluid characteristics is good in vibration absorption effect, and can play a good role in vibration reduction at a fixed vibration frequency; the inherent frequency of the bump leveler is adjustable and can be adjusted according to different excitation frequencies to achieve the best vibration reduction effect; in the vibration process, the inherent frequency of the bump leveler is adjusted continuously through the detection of the vibration sensor so as to realize real-time tracking and guarantee the effect that the best vibration reduction effect is maintained all the time in the vibration process; due to semi-active control, consumed external energy is little; the variable-stiffness variable-damping bump leveler is simple in structure, easy to realize, high in feasibility, and easy to use in a combined mode; multiple bump levelers can be combined and used for multi-frequency vibration.
Description
Technical field
The utility model relates to a kind of bump leveller, relates in particular to a kind of stiffness and damping changing of change based on magnetic flow liquid characteristic bump leveller.
Background technique
In daily life and work, ubiquity vibration.In life, the electric fan that is rotating that the crown hangs, automobile on highway and operation locomotive in orbit etc. travel; In work, the truss that swings with the wind in the lathe of operative workpiece, building site in factory etc.And the existence of vibration has caused impact to people's life, even injures people's life safety, so reduce and even eliminates vibration to become the problem that people constantly study.
Nowadays the vibration damper of people's model utility is based on three kinds of patterns: Passive Control pattern, Active Control Mode, half Active Control Mode.Absorbing is one of form of vibration damping.Based on the bump leveller of Passive Control pattern, it is most widely used, and is simple in structure, and cost is low, but the natural frequency of its bump leveller is non-adjustable,, when identical with excited frequency or while differing very little, can reach good effectiveness in vibration suppression; When its natural frequency and excited frequency differed larger, effectiveness in vibration suppression is very poor can be even that vibration worsens.Based on the bump leveller of Active Control Mode, its bump leveller is to come Real-time Collection vibrating object information directly to provide power to offset the power that vibration produces by sensor, but required response is fast, and the extra power support is arranged, and cost compare is high.The bump leveller that half active mode is controlled, its bump leveller is to come Real-time Collection vibrating object information to change the natural frequency of self by sensor, thereby need not to consume a lot of energy and can reach good effectiveness in vibration suppression.
Along with the development of science and technology, bump leveller traditional, that natural frequency is narrow can not be satisfied the demand, and the development of bump leveller is towards wideband, multifrequency development.A kind of bump leveller with many natural frequencys that patent NO.201120197689.3 is designed, the different latch plate of a plurality of effective lengths has been installed and the different mass block of erection weight on latch plate on its bump leveller base, the position of mass block on latch plate is adjustable, therefore can enlarge its natural frequency, its shortcoming is that its natural frequency process of adjusting is loaded down with trivial details, and can not regulate in real time in vibration processes; The outside resources that consumes is larger, and owing to having used permanent magnet, its use has narrow limitation; ACTIVE CONTROL need to provide external energy and its more complicated of control for active force, requires fast response time, and cost compare is high.
Magnetic flow liquid is as a kind of novel intellectual material, its performance shows that its rheological properties changes along with the variation in magnetic field---it shows as rheology when without magnetic field, but along with the enhancing in magnetic field, its rheological properties changes, and trends towards gradually solid-state.Due to this performance, it is used to design damper, clutch and valve etc.
The model utility content
The utility model purpose is exactly in order to make up the defect of prior art, and a kind of stiffness and damping changing of change based on magnetic flow liquid characteristic bump leveller is provided.
The utility model is achieved through the following technical solutions:
a kind of stiffness and damping changing of change based on magnetic flow liquid characteristic bump leveller, include the vibration base, housing, the absorbing mass block, two springs, shelf and trident pole, described housing open-topped, the housing bottom is fixedly connected with the basic top of described vibration by screw, the left and right sides of enclosure interior bottom surface is respectively equipped with base, the base top is respectively equipped with oil cylinder, oil cylinder is provided with piston rod, the inside of described two springs is respectively equipped with guiding device, the top of spring and bottom are fixed with respectively top board and base plate, the top of described two piston rods is fixedly connected with the base plate of two springs respectively, the top board of two springs is connected with two bars of described trident pole respectively by pin, described shelf bottom is hollow, the hollow space both sides have oval-shaped groove, the push rod of described trident pole is connected with shelf by pin, described shelf is positioned at the top of housing, described absorbing mass block is fixedly connected with shelf by screw, also be provided with a left side between inside two bases of described housing, right band piston cylinder and a magnetic rheological valve, described band piston cylinder is middle with piston, the mouth cylinder of the piston left and right sides is respectively filler opening and liquid entering hole, the oil outlet of described two oil cylinders connects respectively left by oil pipe, right filler opening with piston cylinder, described magnetic rheological valve inside is full of magnetic flow liquid, the cylinder body outer felt of magnetic rheological valve is wound with hot-wire coil, produce magnetic field, the outlet of the left and right sides of magnetic rheological valve by connecting tube respectively with a left side, right liquid entering hole with piston cylinder connects, be separately installed with vibration transducer above described vibration base and shelf, two vibration transducers all are connected with a data Collection ﹠ Processing System, described hot-wire coil is connected with a power amplifier, described data Collection ﹠ Processing System and power amplifier all are connected with controller.
Described magnetic rheological valve is the inner cylinder body that is full of magnetic flow liquid, and two ends, cylinder body left and right are provided with the connecting tube joint.
The utility model has used the flow characteristics of magnetic flow liquid to control damping and the rigidity of bump leveller system, thereby changes the natural frequency of bump leveller.In housing, magnetic rheological valve the right and left is connecting respectively one group of vibration insulating system that is composed in series by spring and oil cylinder.When the obstructed electric current of coil, there is no magnetic field on magnetic rheological valve, magnetic flow liquid presents flowing state, and the rigidity of the vibration insulating system on magnetic rheological valve both sides can be regarded series connection as; When coil electricity was saturated, the magnetic flow liquid in magnetic rheological valve showed solid-state character, and the liquid on both sides is no longer mobile, and the rigidity of the vibration insulating system on magnetic rheological valve both sides can be regarded state in parallel as.When size of current was between 0 value and saturation state, the rigidity of its system was between series connection and state in parallel.And the flow characteristics of institute's galvanization affects magnetic flow liquid, also changed the damping of system with this.
The utility model has the advantages that: the utility model shock attenuation result is good, under a fixing vibration frequency, can play a good damping effect; The bump leveller natural frequency is adjustable, can regulate according to different excited frequencies the natural frequency of self, to reach best effectiveness in vibration suppression; In the process of vibration, constantly adjust the natural frequency of oneself by the detection of sensor, reach real-time tracking, to guarantee keeping best effectiveness in vibration suppression in vibration processes always; Owing to being half ACTIVE CONTROL, therefore the outside energy that consumes is few; Simple in structure, be easy to realize, feasibility is high; Be easy to be used in combination, for multifrequency vibration, can be used in combination a plurality of bump levellers.
Description of drawings
Fig. 1 is the utility model principle schematic.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is magnetic rheological valve in the utility model and the cross-sectional schematic of other chain structure part.
Embodiment
as Fig. 1, 2, shown in 3, a kind of stiffness and damping changing of change based on magnetic flow liquid characteristic bump leveller, include vibration base 1, housing 2, absorbing mass block 3, two springs 4, shelf 5 and trident pole 6, described housing 2 open-toppeds, housing 2 bottoms are fixedly connected with by basic 1 top of screw and described vibration, the left and right sides of housing 2 inner bottom surface is respectively equipped with base 7, base 7 tops are respectively equipped with oil cylinder 8, oil cylinder 8 is provided with piston rod 9, the inside of described two springs 4 is respectively equipped with guiding device 10, the top of spring 4 and bottom are fixed with respectively top board 11 and base plate 12, the top of described two piston rods 9 is fixedly connected with the base plate 12 of two springs 4 respectively, the top board 11 of two springs 4 is connected with two bars of described trident pole 6 respectively by pin, described shelf 5 bottoms are hollow, the hollow space both sides have oval-shaped groove, the push rod of described trident pole 6 is connected with shelf 5 by pin, described shelf 5 is positioned at the top of housing 2, described absorbing mass block 3 is fixedly connected with shelf 5 by screw, also be provided with a left side between inside two bases of described housing 2, right band piston cylinder 13 and a magnetic rheological valve 14, described band piston cylinder 13 is middle with piston, the mouth cylinder of the piston left and right sides is respectively filler opening and liquid entering hole, the oil outlet of described two oil cylinders 8 connects left by oil pipe 15 respectively, right filler opening with piston cylinder 13, described magnetic rheological valve 14 inside are full of magnetic flow liquid 16, the cylinder body outer felt of magnetic rheological valve 14 is wound with hot-wire coil 17, produce magnetic field, the outlet of the left and right sides of magnetic rheological valve 14 by connecting tube 18 respectively with a left side, right liquid entering hole with piston cylinder 13 connects, be separately installed with vibration transducer 19 above described vibration base 1 and shelf 5, two vibration transducers 19 all are connected with a data Collection ﹠ Processing System 20, described hot-wire coil 17 is connected with a power amplifier 21, described data Collection ﹠ Processing System 20 is connected with power amplifier and all with controller 22, is connected.
Described magnetic rheological valve 14 is the inner cylinder body that is full of magnetic flow liquid 16, and two ends, cylinder body left and right are provided with the connecting tube joint.
When vibration base 1 is subject to impressed frequency and starts to vibrate, effect due to inertia, absorbing mass block 3 and shelf 5 be vibration together thereupon, the trident pole 6 that shelf 5 connects is slided in the groove of shelf 5, another two poles of trident pole 6 swing up and down, compression and tension spring 4, and then oil cylinder 8 is applied power, flow in magnetic flow liquid 16 left and right in magnetic rheological valve 14.
In the situation that do not apply electric current, the magnetic field by magnetic rheological valve 14 is zero.Magnetic flow liquid 16 shows its general mobile performance, and this bump leveller system can be regarded a rigidity as and is subjected to the shock absorption system of oil cylinder 8 and magnetic flow liquid 16 joint effects by 4 series connection of two springs, damping.
When passing to magnetic flow liquid 16 saturation current, magnetic flow liquid 16 shows the state of its curing, the liquid at magnetic rheological valve 14 two ends is without mutually flowing, and the bump leveller system can be regarded a rigidity as and is subjected to the shock absorption system of oil cylinder 8 and magnetic flow liquid 16 joint effects by two spring 4 parallel connections, dampings at this moment.
When the size of current that applies was between 0 value and saturation value, its rigidity was between series connection and state in parallel.
Along with the variation of magnetic flow liquid flow characteristic, the damping of shock absorption system also changes.
, because natural frequency is relevant with rigidity and quality,, therefore work as in the constant situation of absorbing mass block 3, change rigidity and also just changed the natural frequency of shock absorption system.
In actual applications,
(1) can measure respectively by vibration transducer 19 vibration frequency of additional excited frequency and absorbing mass block 3, comparative analysis by data collection and analysis system 20, the output control signal, act on hot-wire coil 17 through power amplifier 21, to change rigidity and the damping of shock absorption system, thereby change natural frequency.In the process of constantly vibration, constantly compare, real-time reach best effectiveness in vibration suppression.
(2) in the vibration of fixing forcing frequency, can regulate the natural frequency of absorbing matter system in advance, make it reach optimum efficiency when absorbing.
Claims (2)
1. the stiffness and damping changing of the change based on magnetic flow liquid characteristic bump leveller, it is characterized in that: include the vibration base, housing, the absorbing mass block, two springs, shelf and trident pole, described housing open-topped, the housing bottom is fixedly connected with the basic top of described vibration by screw, the left and right sides of enclosure interior bottom surface is respectively equipped with base, the base top is respectively equipped with oil cylinder, oil cylinder is provided with piston rod, the inside of described two springs is respectively equipped with guiding device, the top of spring and bottom are fixed with respectively top board and base plate, the top of described two piston rods is fixedly connected with the base plate of two springs respectively, the top board of two springs is connected with two bars of described trident pole respectively by pin, described shelf bottom is hollow, the hollow space both sides have oval-shaped groove, the push rod of described trident pole is connected with shelf by pin, described shelf is positioned at the top of housing, described absorbing mass block is fixedly connected with shelf by screw, also be provided with a left side between inside two bases of described housing, right band piston cylinder and a magnetic rheological valve, described band piston cylinder is middle with piston, the mouth cylinder of the piston left and right sides is respectively filler opening and liquid entering hole, the oil outlet of described two oil cylinders connects respectively left by oil pipe, right filler opening with piston cylinder, described magnetic rheological valve inside is full of magnetic flow liquid, the cylinder body outer felt of magnetic rheological valve is wound with hot-wire coil, the outlet of the left and right sides of magnetic rheological valve by connecting tube respectively with a left side, right liquid entering hole with piston cylinder connects, be separately installed with vibration transducer above described vibration base and shelf, two vibration transducers all are connected with a data Collection ﹠ Processing System, described hot-wire coil is connected with a power amplifier, described data Collection ﹠ Processing System and power amplifier all are connected with controller.
2. the stiffness and damping changing of the change based on magnetic flow liquid characteristic bump leveller according to claim 1 is characterized in that: described magnetic rheological valve is the inner cylinder body that is full of magnetic flow liquid, and two ends, cylinder body left and right are provided with the connecting tube joint.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013201595960U CN203285901U (en) | 2013-04-02 | 2013-04-02 | Variable-stiffness variable-damping bump leveler based on magneto-rheological fluid characteristics |
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| CN2013201595960U CN203285901U (en) | 2013-04-02 | 2013-04-02 | Variable-stiffness variable-damping bump leveler based on magneto-rheological fluid characteristics |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225666A (en) * | 2013-04-02 | 2013-07-31 | 合肥工业大学 | Variable-stiffness variable-damping vibration absorber based on characteristics of magneto-rheological fluid |
| CN109263165A (en) * | 2018-10-26 | 2019-01-25 | 西南交通大学 | A kind of middle low frequency suction vibration isolation metamaterial of multiband selected control |
| CN109946422A (en) * | 2019-02-20 | 2019-06-28 | 天津广正汇通新能源科技有限公司 | Environment monitoring equipment and its monitoring method based on GPRS |
| CN110304159A (en) * | 2019-07-22 | 2019-10-08 | 浙江大学 | A kind of regulation device and application thereof for changing flow field stationary point position |
| CN113323985A (en) * | 2021-06-29 | 2021-08-31 | 常州大学 | Shock-resistant adjustable rigidity vibration isolator |
| CN113606281A (en) * | 2021-07-19 | 2021-11-05 | 东风汽车集团股份有限公司 | Automobile dynamic vibration absorption system and control method |
-
2013
- 2013-04-02 CN CN2013201595960U patent/CN203285901U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225666A (en) * | 2013-04-02 | 2013-07-31 | 合肥工业大学 | Variable-stiffness variable-damping vibration absorber based on characteristics of magneto-rheological fluid |
| CN103225666B (en) * | 2013-04-02 | 2015-07-22 | 合肥工业大学 | Variable-stiffness variable-damping vibration absorber based on characteristics of magneto-rheological fluid |
| CN109263165A (en) * | 2018-10-26 | 2019-01-25 | 西南交通大学 | A kind of middle low frequency suction vibration isolation metamaterial of multiband selected control |
| CN109263165B (en) * | 2018-10-26 | 2024-01-30 | 西南交通大学 | Multiband-selected-control medium-low frequency absorption and vibration isolation metamaterial |
| CN109946422A (en) * | 2019-02-20 | 2019-06-28 | 天津广正汇通新能源科技有限公司 | Environment monitoring equipment and its monitoring method based on GPRS |
| CN110304159A (en) * | 2019-07-22 | 2019-10-08 | 浙江大学 | A kind of regulation device and application thereof for changing flow field stationary point position |
| CN110304159B (en) * | 2019-07-22 | 2020-06-23 | 浙江大学 | Regulating and controlling device for changing position of flow field stagnation point and application thereof |
| CN113323985A (en) * | 2021-06-29 | 2021-08-31 | 常州大学 | Shock-resistant adjustable rigidity vibration isolator |
| CN113323985B (en) * | 2021-06-29 | 2022-04-19 | 常州大学 | Shock-resistant adjustable rigidity vibration isolator |
| CN113606281A (en) * | 2021-07-19 | 2021-11-05 | 东风汽车集团股份有限公司 | Automobile dynamic vibration absorption system and control method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131113 Effective date of abandoning: 20150722 |
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| RGAV | Abandon patent right to avoid regrant |