CN207750435U - A kind of sinuous formula MR damper of external multi-coil excitation - Google Patents
A kind of sinuous formula MR damper of external multi-coil excitation Download PDFInfo
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- CN207750435U CN207750435U CN201820120354.3U CN201820120354U CN207750435U CN 207750435 U CN207750435 U CN 207750435U CN 201820120354 U CN201820120354 U CN 201820120354U CN 207750435 U CN207750435 U CN 207750435U
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- damper
- cylinder body
- damper cylinder
- end cap
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Abstract
The utility model discloses a kind of sinuous formula MR dampers of external multi-coil excitation, are mainly made of attenuator end cap, damper cylinder body, magnet exciting coil, piston and hanging ring etc..The first, second, and third fluid course formed between damper cylinder body I, damper cylinder body II, damper cylinder body III and damper cylinder body IV is composed in series sinuous formula fluid course by circular through hole, and 15 sections of effective damping gaps are formed in the case where four magnet exciting coils encourage.The structure can effectively increase damping clearance length in the case that not increasing appearance and size, ensure that damper can provide sufficiently large damping force.External excitation coil structure can avoid coil block and be contacted with magnetorheological fluid, is more convenient when solving the problems, such as that coil working fever influences magnetorheological fluid performance, while repairing replacement, to improve the stability of damper.The utility model damper performance is stablized, and output damping force is big, especially suitable for high-power engineering machinery vibration damping field.
Description
Technical field
The utility model is related to a kind of MR damper more particularly to a kind of sinuous formula magnetic currents of external multi-coil excitation
Variable damping device.
Background technology
MR damper is a kind of novel intelligent damper, and half master can be realized using the magnetic rheology effect of magnetorheological fluid
Dynamic control.The intelligent damper has many advantages, such as, for example, big output damping force, wide tuning range, fast response time and
It is simple in structure.Currently, MR damper is answered in numerous areas such as automotive suspension, railway locomotive and bridge constructions
With.
By winding one group of coil on built-in piston head, being passed through electric current can generate between damping MR damper
The magnetic line of force of gap.Magnetorheological fluid is changed by magnetic fields viscosity, and then generates output damping force.Input different size of electricity
Stream, can generate different size of damping force.Traditional MR damper is all that magnet exciting coil is built in damper cylinder body,
Heat is easy tod produce when energization influences the performance of magnetorheological fluid；Simultaneously because magnet exciting coil is contacted with magnetorheological fluid, it is easier to send out
Phenomena such as raw burn into damage, and repair and replacement are sufficiently complex.
In addition, a damp channel is generally only arranged in traditional MR damper, output damping force is limited.It is needed when encountering
When exporting damping force operating mode greatly, damper is easy failure.The common method for increasing damping force is to extend damping clearance, but prolong
Long damping clearance also increases the volume of damper while increasing damping force.
Invention content
In order to overcome the problems, such as that MR damper described in background technology has and meet actually making for MR damper
With requiring, the utility model provides a kind of sinuous formula MR damper of external multi-coil excitation.The damper of the damper
I outer surface of cylinder body is machined with annular groove, and the annulus damping clearance formed between damper cylinder body I and damper cylinder body II is constituted
First fluid course；It is logical that the annulus damping clearance formed between damper cylinder body II and damper cylinder body III constitutes the second liquid stream
Road；The annulus damping clearance formed between damper cylinder body III and damper cylinder body IV constitutes third fluid course；Damper cylinder
I external peripheral surface left end of body and right end are machined with 6 equally distributed circular through holes, and II external peripheral surface of damper cylinder body is right
End is machined with 6 equally distributed circular through holes, and III external peripheral surface left end of damper cylinder body and right end are machined with 6 uniformly
The circular through hole of distribution；First, second, and third fluid course is cascaded by circular through hole.IV appearance of damper cylinder body
There are four winding slots for face processing, and magnet exciting coil I, magnet exciting coil II, magnet exciting coil III and magnet exciting coil IV are respectively wound around resistance
In four winding slots of Buddhist nun's device cylinder body IV；When being passed through electric current to four groups of magnet exciting coils, the magnetic field of generation acts perpendicularly to first,
Two and third fluid course, 15 sections of effective damping gaps are constituted, output damping force is greatly improved.External magnet exciting coil is not
It is contacted with magnetorheological fluid, solves the problems, such as that magnet exciting coil operational heat influences magnetorheological fluid performance；In addition, magnet exciting coil
It is convenient for changing and repairs when damage.Compared with traditional MR damper, which is not increasing damper shaft
To the output damping force and damping force adjustable extent of bigger can be provided in the case of length, while there is higher stability, more
Add and is suitable for various vibration damping fields.
Technical solution includes used by the utility model solves its technical problem：Left hanging ring (1), piston rod (2), damping
Device left end cap (3), damper cylinder body II (5), damper cylinder body III (6), damper cylinder body IV (7), is lived at damper cylinder body I (4)
Chock plug (8), right hanging ring (9), damper right end cap (10), magnet exciting coil I (11), magnet exciting coil II (12), magnet exciting coil III
(13), magnet exciting coil IV (14) and damper cylinder body V (15)；Left hanging ring (1) is threadably secured with piston rod (2) to be connect；
It is machined with circular through hole among damper left end cap (3), between piston rod (2) and damper left end cap (3) circular through hole inner surface
Gap coordinates, and is sealed by a seal ring；Damper left end cap (3) and damper cylinder body I (4) clearance fit, and by close
Seal is sealed；Damper left end cap (3) is fixedly connected with damper cylinder body I (4) by screw；Damper cylinder body I (4) is outside
Circumferential surface left end and right end are machined with 6 equally distributed circular through holes；Damper cylinder body II (5) external peripheral surface right end
It is machined with 6 equally distributed circular through holes；Damper cylinder body II (5) circumferential inner surface and damper cylinder body I (4) circumferential outer surface
Face is interference fitted；Damper cylinder body II (5) passes through the annular groove of damper left end cap (3) and damper right end cap (10) respectively
Carry out axially position；Damper cylinder body I (4) outer surface is machined with annular groove, damper cylinder body I (4) and damper cylinder body II
(5) the annulus damping clearance formed between constitutes the first fluid course (16)；Damper cylinder body III (6) external peripheral surface left end and
Right end is machined with 6 equally distributed circular through holes；Damper cylinder body III (6) passes through damper left end cap (3) and resistance respectively
The annular groove of Buddhist nun's device right end cap (10) carries out axially position；It is formed between damper cylinder body II (5) and damper cylinder body III (6)
Annulus damping clearance constitute the second fluid course (17)；Damper cylinder body IV (7) passes through damper left end cap (3) and resistance respectively
The annular groove of Buddhist nun's device right end cap (10) carries out axially position；It is formed between damper cylinder body III (6) and damper cylinder body IV (7)
Annulus damping clearance constitute third fluid course (18)；There are four winding slot, excitations for the processing of damper cylinder body IV (7) outer surface
Coil I (11), magnet exciting coil II (12), magnet exciting coil III (13) and magnet exciting coil IV (14) are respectively wound around damper cylinder body
In four winding slots of IV (7)；Damper cylinder body V (15) circumferential inner surface and damper cylinder body IV (7) circumferential outer surface interference
Cooperation；Damper cylinder body V (15) is carried out by the annular groove of damper left end cap (3) and damper right end cap (10) respectively
Axially position；Piston head (8) circumferential inner surface is interference fitted with piston rod (2) outer surface, and is fastened and positioned by taper bolt；It is living
Chock plug (8) circumferential outer surface and damper cylinder body I (4) circumferential inner surface clearance fit, and be sealed by a seal ring；Damping
Circular through hole, piston rod (2) and damper right end cap (10) circular through hole internal surface gaps are machined among device right end cap (10)
Cooperation, and be sealed by a seal ring；Damper right end cap (10) and damper cylinder body I (4) clearance fit, and pass through sealing
Circle is sealed；Damper right end cap (10) is fixedly connected with damper cylinder body I (4) by screw；Right hanging ring (9) and piston rod
(2) it is threadably secured connection.
The utility model compared with the background art, has an advantageous effect in that：
(1) the annulus resistance formed between the damper cylinder body I and damper cylinder body II of the utility model MR damper
Buddhist nun gap constitutes the first fluid course；The annulus damping clearance that is formed between damper cylinder body II and damper cylinder body III constitutes the
Two fluid courses；The annulus damping clearance formed between damper cylinder body III and damper cylinder body IV constitutes third fluid course.
I left end of damper cylinder body and right end are machined with circular through hole respectively, and II right end of damper cylinder body is machined with circular through hole, damper
III left end of cylinder body and right end are machined with circular through hole respectively, and the first, second, and third fluid course is connected on by circular through hole
Together.The processing of IV outer surface of damper cylinder body magnet exciting coil I, magnet exciting coil II, magnet exciting coil III and is encouraged there are four winding slot
Magnetic coil IV is respectively wound around in four winding slots of damper cylinder body IV；When being passed through electric current to four groups of magnet exciting coils, generation
Magnetic field acts perpendicularly to the first, second, and third fluid course, constitutes 15 sections of effective damping gaps, greatly improves output resistance
Buddhist nun's power.
(2) the external magnet exciting coil of the utility model MR damper is not contacted with magnetorheological fluid, is efficiently solved
Magnet exciting coil operational heat influences the problem of magnetorheological fluid performance；In addition, magnet exciting coil is convenient for changing and repairs when damaging.With biography
The MR damper of system is compared, and the utility model MR damper can be carried in the case where not increasing damper axial length
For the output damping force and damping force adjustable extent of bigger, while there is higher stability, is more suitable for being used for various vibration dampings
Field.
Description of the drawings
Fig. 1 is the utility model structure diagram.
Fig. 2 is the utility model A-A cross-sectional views.
Fig. 3 is the utility model fluid course schematic diagram.
Fig. 4 is the utility model magnet exciting coil magnetic line of force distribution schematic diagram.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and examples：
As shown in Figure 1, the utility model includes：Left hanging ring (1), piston rod (2), damper left end cap (3), damper cylinder
Body I (4), damper cylinder body II (5), damper cylinder body III (6), damper cylinder body IV (7), piston head (8), right hanging ring (9), resistance
Buddhist nun's device right end cap (10), magnet exciting coil I (11), magnet exciting coil II (12), magnet exciting coil III (13), magnet exciting coil IV (14) and
Damper cylinder body V (15).
Fig. 2 show the utility model A-A cross-sectional views.It is recessed that damper cylinder body I (4) outer surface is machined with annular
Slot, the annulus damping clearance formed between damper cylinder body I (4) and damper cylinder body II (5) constitute the first fluid course (16)；
The annulus damping clearance formed between damper cylinder body II (5) and damper cylinder body III (6) constitutes the second fluid course (17)；Resistance
The annulus damping clearance formed between Buddhist nun's device cylinder body III (6) and damper cylinder body IV (7) constitutes third fluid course (18).
Fig. 3 show the utility model fluid course schematic diagram.Damper cylinder body I (4) external peripheral surface left end and right end
It is machined with 6 equally distributed circular through holes；Damper cylinder body II (5) external peripheral surface right end is machined with 6 and is uniformly distributed
Circular through hole；Damper cylinder body III (6) external peripheral surface left end and right end are machined with 6 equally distributed circular through holes.
First fluid course (16), the second fluid course (17) and third fluid course (18) pass through damper cylinder body I (4) left end and the right side
Circular through hole, the circular through hole of damper cylinder body II (5) right end and the circle of damper cylinder body III (6) left end and right end at end
Through-hole is combined in series, while MR damper left chamber being made to be interconnected with right chamber.
Fig. 4 is the utility model magnet exciting coil magnetic line of force distribution schematic diagram.Damper cylinder body I (4), damper cylinder body IV
(7) and damper cylinder V (15) is No. 10 steel permeability magnetic materials, magnet exciting coil I (11), magnet exciting coil II (12), magnet exciting coil III
(13) and magnet exciting coil IV (14) passes perpendicularly through damper cylinder body I (4), damper cylinder because of the magnetic line of force that galvanomagnetic-effect generates successively
Body IV (7) and damper cylinder V (15) form closed circuit.Magnet exciting coil I (11), magnet exciting coil II (12), excitation are given respectively
Coil III (13) and magnet exciting coil IV (14) are passed through electric current I1、I2、I3And I4, I1And I3For forward current, I2And I4For reversed electricity
Stream, the magnetic line of force of interlude are overlapped mutually, and can obtain maximum output damping force at this time.
Utility model works principle is as follows：
Moved back and forth when piston rod (2) is by external drive, magnetorheological fluid by three concatenated fluid courses come
Reflux is dynamic.When magnet exciting coil I (11), magnet exciting coil II (12), magnet exciting coil III (13) and magnet exciting coil IV (14) are each led into
Electric current I1、I2、I3And I4When, the magnetic line of force generated by galvanomagnetic-effect is by and perpendicular to effective damping channel.Since magnetic field is made
With, it flows through the magnetorheological fluid of damp channel its viscosity and will increase, yield stress enhancing.Magnetorheological fluid flows through the damp channel, needs
The intermolecular power for overcoming this catenation, to increase the viscous damping force of MR damper.By adjusting excitation wire
Electric current I in circle1、I2、I3And I4Size, can be changed magnetorheological fluid yield stress, obtain required output damping force.
Claims (1)
1. a kind of sinuous formula MR damper of external multi-coil excitation, it is characterised in that：Including left hanging ring (1), piston rod
(2), damper left end cap (3), damper cylinder body I (4), damper cylinder body II (5), damper cylinder body III (6), damper cylinder body
IV (7), piston head (8), right hanging ring (9), damper right end cap (10), magnet exciting coil I (11), magnet exciting coil II (12), excitation
Coil III (13), magnet exciting coil IV (14) and damper cylinder body V (15)；Left hanging ring (1) is solid by screw thread with piston rod (2)
Fixed connection；Be machined with circular through hole among damper left end cap (3), piston rod (2) in damper left end cap (3) circular through hole
Surface gap coordinates, and is sealed by a seal ring；Damper left end cap (3) and damper cylinder body I (4) clearance fit, and
It is sealed by a seal ring；Damper left end cap (3) is fixedly connected with damper cylinder body I (4) by screw；Damper cylinder body
I (4) external peripheral surface left end and right end are machined with 6 equally distributed circular through holes；Damper cylinder body II (5) outer circle weekly form
Face right end is machined with 6 equally distributed circular through holes；Damper cylinder body II (5) circumferential inner surface and damper cylinder body I (4) circle
All outer surface interference fits；Damper cylinder body II (5) passes through the ring of damper left end cap (3) and damper right end cap (10) respectively
Connected in star carries out axially position；Damper cylinder body I (4) outer surface is machined with annular groove, damper cylinder body I (4) and damper
The annulus damping clearance formed between cylinder body II (5) constitutes the first fluid course (16)；Damper cylinder body III (6) external peripheral surface
Left end and right end are machined with 6 equally distributed circular through holes；Damper cylinder body III (6) passes through damper left end cap respectively
(3) axially position is carried out with the annular groove of damper right end cap (10)；Damper cylinder body II (5) and damper cylinder body III (6)
Between the annulus damping clearance that is formed constitute the second fluid course (17)；Damper cylinder body IV (7) passes through damper left end respectively
It covers (3) and the annular groove of damper right end cap (10) carries out axially position；Damper cylinder body III (6) and damper cylinder body IV
(7) the annulus damping clearance formed between constitutes third fluid course (18)；There are four the processing of damper cylinder body IV (7) outer surface
Winding slot, magnet exciting coil I (11), magnet exciting coil II (12), magnet exciting coil III (13) and magnet exciting coil IV (14) are wound respectively
In four winding slots of damper cylinder body IV (7)；Damper cylinder body V (15) circumferential inner surface and damper cylinder body IV (7) circle
All outer surface interference fits；Damper cylinder body V (15) passes through damper left end cap (3) and damper right end cap (10) respectively
Annular groove carries out axially position；Piston head (8) circumferential inner surface is interference fitted with piston rod (2) outer surface, and passes through circular cone
Lock fixed bit；Piston head (8) circumferential outer surface and damper cylinder body I (4) circumferential inner surface clearance fit, and pass through sealing ring
It is sealed；Circular through hole is machined among damper right end cap (10), piston rod (2) is round logical with damper right end cap (10)
Internal surface of hole clearance fit, and be sealed by a seal ring；Damper right end cap (10) is matched with damper cylinder body I (4) gap
It closes, and is sealed by a seal ring；Damper right end cap (10) is fixedly connected with damper cylinder body I (4) by screw；It hangs on the right side
Ring (9) is threadably secured with piston rod (2) and connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820120354.3U CN207750435U (en) | 2018-01-24 | 2018-01-24 | A kind of sinuous formula MR damper of external multi-coil excitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820120354.3U CN207750435U (en) | 2018-01-24 | 2018-01-24 | A kind of sinuous formula MR damper of external multi-coil excitation |
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| Publication Number | Publication Date |
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| CN207750435U true CN207750435U (en) | 2018-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820120354.3U Active CN207750435U (en) | 2018-01-24 | 2018-01-24 | A kind of sinuous formula MR damper of external multi-coil excitation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236936A (en) * | 2018-11-11 | 2019-01-18 | 华东交通大学 | A kind of MR damper being sealed using elastic metallic bellows |
-
2018
- 2018-01-24 CN CN201820120354.3U patent/CN207750435U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236936A (en) * | 2018-11-11 | 2019-01-18 | 华东交通大学 | A kind of MR damper being sealed using elastic metallic bellows |
| CN109236936B (en) * | 2018-11-11 | 2023-12-22 | 华东交通大学 | Magnetorheological damper sealed by elastic metal corrugated pipe |
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