CN107327533A - A kind of magnetorheological mud damper - Google Patents
A kind of magnetorheological mud damper Download PDFInfo
- Publication number
- CN107327533A CN107327533A CN201710569055.8A CN201710569055A CN107327533A CN 107327533 A CN107327533 A CN 107327533A CN 201710569055 A CN201710569055 A CN 201710569055A CN 107327533 A CN107327533 A CN 107327533A
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- China
- Prior art keywords
- magnetorheological
- mud
- cylinder body
- iron core
- piston
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a kind of magnetorheological mud damper, the iron core mutually agreed with the tubular cylinder body with capping, the piston in cylinder body and embedded piston and with piston is constituted；Magnetorheological mud is filled with the cylinder body；It is wound with magnet exciting coil on the iron core, iron core is provided through the through-hole structure I of iron core in the vertical direction for producing magnetic field with magnet exciting coil, the through-hole structure I connects to form magnetorheological mud passage with the through-hole structure II on piston；Piston both sides are arranged with pull bar, and the junction that pull bar stretches out outside cylinder body and covered with cylinder body is sealed；Magnet exciting coil on iron core is connected by the duct in pull bar with extraneous power supply.The magnetorheological mud passage of the magnetorheological mud damper of the present invention is located at internal piston, and regulating effect is good；Iron core can be replaced, and The Mechanical Property of Damper is adjustable；Iron core is not stressed directly, good endurance；Magnetorheological mud shear yield strength is big, and resistance to settling can be good.
Description
Technical field
The present invention relates to a kind of magnetorheological mud damper, belong to every vibration absorber technical field.
Background technology
With national development, growth in the living standard, the importance structure such as skyscraper, tall and slender structure, large-span structure
It is growing day by day.Under dynamic load (such as high wind and earthquake) effect, these structures can be produced than larger vibration, have influence on structure
Normal use and safety, the wind shake or earthquake response for how reducing structure are a forward position and important problem.Structural vibration
Control is a kind of new earthquake resistant construction, i.e., consume by setting damping or earthquake isolating equipment in the structure or isolate vibrational energy
Amount, or energy outside applying is to offset effect of the external drive to structure.Magnetorheological mud is cutting using magnetorheological materials
Cut yield strength with externally-applied magnetic field is strong and weak and semi-automatic control device that characteristic that change makes, because its is low in energy consumption, controllable,
Exerting oneself, big, time lag is small, and the existing stability passively controlled, the adjustability feature for having active control again obtains researcher
Favor, as study hotspot.
The adjustability of magnetorheological mud damper, is the magnetic field by applying change to magnetorheological mud therein, makes it in modeling
Inversion is realized between property body-solid.Magnetorheological mud is as a kind of New Materials On Magnetorheological Fluids, to realize this inversion characteristic,
Typically it is made up of magnetic conduction particle, non-magnetic plastic substrate and some additives.Compared with magnetic flow liquid, magnetorheological mud has preferably
Resistance to settling and larger null field viscosity.Under zero magnetic field conditions, magnetorheological mud be in a kind of mecystasis, its viscosity,
Hardness is all higher than the corresponding index of magnetic flow liquid.In view of the research at present both at home and abroad to magnetorheological mud is less, magnetorheological mud is hindered
The research of Buddhist nun's device is also seldom, and the construction of common MR damper is also not particularly suited for magnetorheological mud, because magnetorheological mud
Although high viscosity brings excellent resistance to settling but can also make coil more easy to wear.Magnetorheological mud compared to magnetic flow liquid, by
Need also exist for more sensitive uniform magnetic field to regulate and control in its high viscosity.These problems that presently, there are are so that magnetorheological mud is damped
Device is limited by very large in actual applications.
The content of the invention
Goal of the invention：The technical problems to be solved by the invention are to provide a kind of magnetorheological mud damper, the magnetorheological mud
Damping device is cored alternatively, can produce larger even strong controlling magnetic field, the advantage of good endurance.
The content of the invention：In order to solve the above technical problems, the technology used in the present invention means are：
A kind of magnetorheological mud damper, in tubular cylinder body, the piston in cylinder body and embedded piston and and piston
The iron core composition mutually agreed with；Magnetorheological mud is filled with the cylinder body；Be wound with magnet exciting coil on the iron core, iron core with
Magnet exciting coil, which is produced, to be provided through in the vertical direction in magnetic field on the through-hole structure I, the through-hole structure I of iron core and piston
Through-hole structure II connects to form magnetorheological mud passage；Piston both sides are arranged with pull bar, and pull bar stretches out outside cylinder body and sealed with cylinder body
Lid is tightly connected；Magnet exciting coil on iron core is connected by the duct in pull bar with extraneous power supply.
Wherein, steel pipe is equipped with the magnetorheological mud passage, steel pipe is fixed on magnetorheological mud passage by epoxy resin
In.
Wherein, magnetorheological mud passage has multiple, is separately positioned on the upper and lower ends of iron core.
Wherein, the cylinder body two ends are covered provided with cylinder body, and cylinder body is covered to cooperate by internal and external threads with cylinder body and is connected.
Wherein, the cylinder body, which is provided with magnetorheological mud fill orifice, fill orifice, carries sealing device.
Compared to prior art, technical solution of the present invention have the advantage that for：
First, the flow channel of magnetorheological mud (produces magnetic field perpendicular to magnet exciting coil in magnetorheological mud damper of the invention
Direction), the flow channel is located at iron core and coil inside, and core interior magnetic field is uniform magnetic field, so that regulating effect is good, increases
Big effective working region, improves the adjustability of damper；
Secondly, magnetorheological mud damper of the invention from piston exterior by magnet exciting coil by being adjusted to internal piston, and line
Ring is changed into horizontal direction around direction, can be prevented effectively from the magnetorheological mud of high viscosity and directly be contacted with magnet exciting coil, prevent coil
Destruction, while iron core is not also stressed directly, add its durability；
Furthermore, the flow channel of the magnetorheological magnetorheological mud of mud damper of the invention is no longer the gap of piston and cylinder body, and
It is the two tiny long and narrow circular duct in piston, can so improves exerting oneself for damper；
Finally, magnetorheological mud damper of the invention is designed using the iron core with magnet exciting coil and piston split, beneficial to
The replacement of different exciting ability coil, can effectively change the mechanical characteristic of magnetorheological mud damper according to the difference of application scenario,
So as to possess the extensive scope of application；Inventing will exert oneself and preferably may be used with bigger under the identical size of magnetorheological mud damper
Tonality.
Brief description of the drawings
Fig. 1 is magnetorheological mud damper axial cross-sectional views of the invention；
Fig. 2 is the structural representation of iron core in magnetorheological mud damper of the invention；
Fig. 3 is the side view of piston in magnetorheological mud damper of the invention；
Fig. 4 is the top view of piston in magnetorheological mud damper of the invention.
Embodiment
According to following embodiments, the present invention may be better understood.However, as it will be easily appreciated by one skilled in the art that real
Apply the content described by example and be merely to illustrate the present invention, without should be also without limitation on sheet described in detail in claims
Invention.
As shown in figures 1-4, magnetorheological mud damper of the invention, piston 7 by tubular cylinder body 4, in cylinder body 4 and
The iron core 9 agreed with piston 7 in embedded piston 7 and mutually is constituted；Magnetorheological mud is filled with cylinder body 4；Piston 7 and iron core 9 four
Week tightly agrees with the inwall of cylinder body 4, and magnetorheological mud can not flow between the gap of piston 7 and iron core 9 and cylinder body 4；On iron core 9
Magnet exciting coil 10 is wound with, iron core 9 is provided through the through hole of iron core in the vertical direction for producing magnetic field with magnet exciting coil 10
Structure I 12, through-hole structure I12 connects to form magnetorheological mud passage 13 with the through-hole structure II6 on piston 7, magnetorheological mud passage
Steel pipe 8 is equipped with 13, steel pipe 8 is fixed in magnetorheological mud passage 13 by epoxy resin, magnetorheological mud is logical from magnetorheological mud
Flowing is passed through in road 13 in steel pipe 8；The both sides of piston 7 are arranged with pull bar 1, and it is outer and with cylinder body capping 3 that pull bar 1 stretches out cylinder body 4
Junction is connected using sealant sealing；Magnet exciting coil 10 on iron core 9 is connected by the duct 2 in pull bar 1 with extraneous power supply；
The two ends of cylinder body 4 are cooperated by internal and external threads with cylinder body capping 3 and are connected provided with cylinder body capping 3, cylinder body 4；Cylinder body 4 is provided with magnetic
Rheology mud fill orifice 11, fill orifice 11 is used for pouring into cylinder body 4 and pouring out on cylinder body 4, fill orifice 11 with sealing for magnetorheological mud
Device.Magnetorheological mud passage 13 can have multiple, be separately positioned on the upper and lower ends of iron core 9.
Comprising the pull bar duct 2 for placing electric wire in pitch brace 1, for being powered to the coil 10 on iron core 9；Piston 7 and
Iron core 9 moves reciprocating motion in cylinder body 4, and the inner space 5 of cylinder body 4 is used to load magnetorheological mud, and cylinder body capping 3 is led to cylinder body 4
Cross screw thread and tighten and be connected as entirety, and be coated with fluid sealant；The fluid sealant that is coated with same with 3 junctions of cylinder body capping of pitch brace 1 enters
Row sealing, piston 7 tightly agrees with cylinder body 4, and circular arc is made equally and cylinder body 4 in the two ends of iron core 9 being made of electrical pure iron
(shell) tightly agrees with.Piston 7 is connected with iron core 9 by cylinder type hollow steel pipe 8, steel pipe 8 and through-hole structure II6 and iron core 9
Inner via hole structure I 12 is coated with epoxy resin and is connected, and steel cylindrical tube 8 doubles as the passage of magnetorheological mud, the middle part coiling of iron core 9
Hot-wire coil 10, coil 10 is switched on power by pull bar duct 2 with the external world, realizes and the magnetic field inside damper is controlled；Magnetic current
Become mud to irrigate or take out by two fill orifices 11 on cylinder body 4.
The magnetorheological mud damper of the present invention is when bearing external load (vibration), and piston 7 and pull bar 1 will be in (the cylinder bodies of cylinder body 4
4 are made for metal) in move back and forth, the magnetorheological mud in the inner chamber 5 of cylinder body 4 will be forced to pass through in the both sides of piston 7
Magnetorheological mud passage 13 is moved back and forth, in motion process, and piston 7 need to overcome the damping force of magnetorheological mud to do work and consume energy
Amount, so as to play the effect of damping.According to actual conditions, magnetorheological mud can be changed by adjusting the size of current in coil 10
Shear yield strength, so as to change damping force.General coil winding 50~5000 is enclosed, 0.1~2mm of coil diameter.
It is logical in the through-hole structure II6 and iron core 9 of steel pipe 8 successively on insertion piston 7 in the magnetorheological mud damper of the present invention
Pore structure I12, on the one hand plays a part of connection iron core 9 and piston 7, on the other hand also doubles as the passage for magnetorheological mud.Iron
The bossing of core 9 tightly agrees with cylinder body 4 (shell) and the inwall of piston 7, and the middle part neck down portions of iron core 9 are wound with lattice coil, circle
Number is depending on the demand of exerting oneself, and the diameter of iron core 9 after coiling must not exceed the both sides bossing diameter of iron core 9, so that it is guaranteed that
Cylindric electromagnetic core 9 is inserted into the hole of piston 7.This construction can ensure that coil 10 is reciprocal in piston 7 with iron core 9
It is not stressed directly in motion process, so as to effectively solve abrasion that magnetorheological mud high viscosity brings to coil 10 and iron core 9
Endurance issues.Magnetorheological mud is by steel pipe 8 perpendicular to the magnetic direction produced by coil 10, and coil 10 is logical in iron core 9
Uniform magnetic field, and magnetic line of force direction ferromagnetism in the magnetorheological mud direction of motion, magnetorheological mud are formed in pore structure I12
The magnetic chain that is formed of grain can effectively hinder the motion of magnetorheological mud, thus the damper possess larger effective working region and
Good adjustability.
The magnetorheological mud damper of the present invention avoids iron core 9 well and coil 10 is directly contacted with magnetorheological mud, can
Coil 10 and iron core 9 are prevented effectively from because magnetorheological mud is moved and weares and teares, the winding direction of coil 10 is put down with the magnetorheological mud direction of motion
OK, the uniform magnetic field therefore in iron core 9 in magnetorheological mud passage is vertical with channel direction so that the passage in whole iron core 9 is equal
For effective working region, and the inside magnetic induction line of coil 10 is intensive, and magnetic field regulating effect is good, and this construction combines the height of magnetorheological mud
Viscosity can obtain bigger exert oneself；In addition, the need for according to actual conditions, the replaceable iron core for being wound with different coil turns comes
Obtain different EIAJs, the efficiency of whole device is higher, possess it is larger exert oneself and modification scope, and possess good
Durability.
Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and is not to the present invention
The restriction of embodiment.For those of ordinary skill in the field, it can also be made on the basis of the above description
Its various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.And these belong to this hair
Among the obvious changes or variations that bright spirit is extended out is still in protection scope of the present invention.
Claims (5)
1. a kind of magnetorheological mud damper, it is characterised in that：By the tubular cylinder body with capping, the piston in cylinder body and embedding
The iron core for entering in piston and mutually agreeing with piston is constituted；Magnetorheological mud is filled with the cylinder body；It is wound with the iron core
Magnet exciting coil, iron core is provided through the through-hole structure I of iron core in the vertical direction for producing magnetic field with magnet exciting coil, described logical
Pore structure I connects to form magnetorheological mud passage with the through-hole structure II on piston；Piston both sides are arranged with pull bar, and pull bar stretches out
Cylinder body is outer and is connected with cylinder body lidstock；Magnet exciting coil on iron core is connected by the duct in pull bar with extraneous power supply.
2. magnetorheological mud damper according to claim 1, it is characterised in that：Steel is equipped with the magnetorheological mud passage
Pipe, steel pipe is fixed in magnetorheological mud passage by epoxy resin.
3. magnetorheological mud damper according to claim 2, it is characterised in that：Magnetorheological mud passage has multiple, sets respectively
Put the upper and lower ends in iron core.
4. magnetorheological mud damper according to claim 1, it is characterised in that：The cylinder body two ends are covered provided with cylinder body,
Cylinder body is covered to cooperate by internal and external threads with cylinder body and is connected.
5. magnetorheological mud damper according to claim 1, it is characterised in that：The cylinder body is irrigated provided with magnetorheological mud
Sealing device is carried on hole, fill orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569055.8A CN107327533B (en) | 2017-07-12 | 2017-07-12 | Magneto-rheological mud damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569055.8A CN107327533B (en) | 2017-07-12 | 2017-07-12 | Magneto-rheological mud damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107327533A true CN107327533A (en) | 2017-11-07 |
| CN107327533B CN107327533B (en) | 2019-12-10 |
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ID=60196373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710569055.8A Active CN107327533B (en) | 2017-07-12 | 2017-07-12 | Magneto-rheological mud damper |
Country Status (1)
| Country | Link |
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| CN (1) | CN107327533B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108265847A (en) * | 2018-02-27 | 2018-07-10 | 同济大学 | Piston type particle damper |
| CN108466636A (en) * | 2018-03-18 | 2018-08-31 | 昆明创培知识产权服务有限公司 | A kind of track intelligence accident prevention system and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587738A (en) * | 2004-07-09 | 2005-03-02 | 北京工业大学 | Inverse type magnetic flow damper |
| CN102889331A (en) * | 2012-10-19 | 2013-01-23 | 北京交通大学 | Valve control constant magnetic magnetorheological damper |
| DE102012013480A1 (en) * | 2012-07-09 | 2014-01-09 | Inventus Engineering Gmbh | Assembly and method of manufacturing an assembly |
| CN104675905A (en) * | 2015-03-10 | 2015-06-03 | 中国科学技术大学 | Buffer using magneto-rheological cement gum |
| CN105805217A (en) * | 2016-05-09 | 2016-07-27 | 江苏大学 | Magneto-rheological damper for circular magnetic circuit |
-
2017
- 2017-07-12 CN CN201710569055.8A patent/CN107327533B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587738A (en) * | 2004-07-09 | 2005-03-02 | 北京工业大学 | Inverse type magnetic flow damper |
| DE102012013480A1 (en) * | 2012-07-09 | 2014-01-09 | Inventus Engineering Gmbh | Assembly and method of manufacturing an assembly |
| EP2870379A1 (en) * | 2012-07-09 | 2015-05-13 | Inventus Engineering GmbH | Method for producing a subassembly and subassembly |
| CN102889331A (en) * | 2012-10-19 | 2013-01-23 | 北京交通大学 | Valve control constant magnetic magnetorheological damper |
| CN104675905A (en) * | 2015-03-10 | 2015-06-03 | 中国科学技术大学 | Buffer using magneto-rheological cement gum |
| CN105805217A (en) * | 2016-05-09 | 2016-07-27 | 江苏大学 | Magneto-rheological damper for circular magnetic circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108265847A (en) * | 2018-02-27 | 2018-07-10 | 同济大学 | Piston type particle damper |
| CN108466636A (en) * | 2018-03-18 | 2018-08-31 | 昆明创培知识产权服务有限公司 | A kind of track intelligence accident prevention system and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107327533B (en) | 2019-12-10 |
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