CN108953467A - A kind of damping clearance adjustable type magnetic rheology damper with series connection fluid course - Google Patents
A kind of damping clearance adjustable type magnetic rheology damper with series connection fluid course Download PDFInfo
- Publication number
- CN108953467A CN108953467A CN201811111347.8A CN201811111347A CN108953467A CN 108953467 A CN108953467 A CN 108953467A CN 201811111347 A CN201811111347 A CN 201811111347A CN 108953467 A CN108953467 A CN 108953467A
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- China
- Prior art keywords
- cylinder body
- spool
- fluid course
- bobbin winder
- end cap
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- 239000012530 fluid Substances 0.000 title claims abstract description 77
- 238000013016 damping Methods 0.000 title claims abstract description 60
- 238000000518 rheometry Methods 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000007704 transition Effects 0.000 claims description 13
- 239000000696 magnetic material Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000005674 electromagnetic induction Effects 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 230000035699 permeability Effects 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/185—Bitubular units
-
- 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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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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
- F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
- F16F9/483—Arrangements for providing different damping effects at different parts of the stroke characterised by giving a particular shape to the cylinder, e.g. conical
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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
- F16F9/537—Magnetorheological [MR] fluid dampers specially adapted valves therefor
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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
- F16F2234/00—Shape
- F16F2234/04—Shape conical
Abstract
The invention discloses a kind of damping clearance adjustable type magnetic rheology dampers with series connection fluid course, are mainly made of piston rod, end cap, cylinder body, piston head, spool, magnet exciting coil and bobbin winder bracket etc..Gap between spool and bobbin winder bracket forms taper fluid course, and the gap between outer cylinder body and bobbin winder bracket forms circular ring shape fluid course, and the two constitutes series connection liquid flowing channel structure, can form four sections of effective damping gaps under magnetic fields.Wherein, the fluid course constituted between bobbin winder bracket and spool can form two sections of taper effective damping gaps, and the thickness of damping clearance can be changed in adjusting spool position, play the role of adjusting damping force size.When magnet exciting coil is powered on, effective control of damping force can be realized by controlling size of current.The present invention increases effectively liquid stream relaxation length by fluid course of connecting, and ensure that damper can export sufficiently large and wide adjustable extent damping force, especially suitable for the industries vibration insulating system such as railway, traffic.
Description
Technical field
The present invention relates to a kind of MR damper more particularly to a kind of damping clearance with series connection fluid course are adjustable
Formula MR damper.
Background technique
The characteristics of Millisecond response speed, big control range possessed by MR damper and big damping force export, makes
Obtaining it becomes half outstanding active actuators part of industrial application.Currently, MR damper has been widely used in building
And vibration damping vibration prevention system, rail vehicles and vibration damping of automobile suspension system of bridge etc..
Designed MR damper magnet exciting coil is often wrapped in piston head toroidal cavity at present, while in piston
Circular ring shape fluid course is arranged in the internal setting circular ring shape fluid course of head between outer surface of piston and inner surface of cylinder block.Work
When making, magnetorheological fluid is flowed in circular ring shape fluid course, is generated in circular ring shape fluid course perpendicular to magnetic when magnet exciting coil is powered
The magnetic field of rheology liquid flow direction, generates damping force under magnetic fields.Under normal circumstances, change loading current size, it is adjustable
The magnetic induction intensity generated at magnetorheological fluid in pitch circle annular gap, to realize the adjusting of MR damper damping force.When
When magnetic induction intensity in damping clearance reaches saturation, damper output damping force also reaches maximum.Improve above structure
The maximum damping force of MR damper, it is possible to increase damper cylinder diameter changes damping clearance thickness, or using multistage living
The measures such as plug.But also bring along some shortcomings: increasing damper cylinder diameter will lead to the increase of damper overall dimension；Change
Variable damping gap thickness needs the MR damper using different structure, at present between the damping of designed MR damper
Gap thickness is fixed non-adjustable, it is difficult to meet the application requirement under different operating conditions；Relaxation length is increased using multi-stage piston arrangement
Will increase the axial dimension of piston, in the case where installation dimension is certain, damper can be reduced when exporting damping force to improve
Effective impulse stroke.
Summary of the invention
In order to solve the problems, such as background technique and meet requirement of the MR damper in engineer application, this hair
It is bright to propose a kind of damping clearance adjustable type magnetic rheology damper with series connection fluid course.Outside the spool of the MR damper
Surface and bobbin winder bracket inner surface use the tapered surface structure with certain angle, and the gap between spool and bobbin winder bracket forms taper
Fluid course A.Bobbin winder bracket outer surface and outer cylinder body inner surface use smooth cylindrical surface structure, between outer cylinder body and bobbin winder bracket
Gap forms circular ring shape fluid course B.Taper fluid course A constitutes liquid flowing channel structure of connecting with circular ring shape fluid course B,
Four sections of effective damping gaps can be formed in magnet exciting coil under the action of exciting current.The cone wherein constituted between bobbin winder bracket and spool
Shape fluid course A can form the effective damping gap of two sections of tapers, and spool, bobbin winder bracket and magnet exciting coil three constitute a damping
The effective damping of taper fluid course A can be changed by the position of adjusting spool for the adjustable unicoil MR valve structure in gap
Gap thickness, to play the role of adjusting damping force size when magnetorheological fluid flows through.When being powered on to magnet exciting coil, lead to
Effective control of damping force can be realized by crossing control application size of current.The present invention is adjustable by series connection fluid course and damping clearance
Structure increase effectively liquid stream relaxation length, provide adjustable damping clearance thickness, by control magnet exciting coil in apply
The size of electric current can realize effective control of damping force, ensure that damper can export sufficiently large and wide adjustable extent damping
Power, especially suitable for the industries vibration insulating system such as railway, traffic.
The technical solution adopted by the present invention to solve the technical problems includes: left lifting lug (1), piston rod (2), left end cap
(3), outer cylinder body (4), left inside cylinder body (5), left taper bolt (6), piston head (7), right taper bolt (8), spool (9), bobbin winder bracket
(10), magnet exciting coil (11), right inner cylinder body (12), right end cap (13), locking nut (14) and right lifting lug (15)；Piston rod (2)
Left end is connect with left lifting lug (1) by screw threads for fastening；Circular through hole, piston rod (2) and left end cap are machined among left end cap (3)
(3) circular through hole internal surface gaps cooperate, and are sealed by a seal ring；Left end cap (3) and left inside cylinder body (5) inner surface mistake
Cooperation is crossed, and is sealed by a seal ring；Left end cap (3) is fixedly connected with left inside cylinder body (5) by screw；Outer cylinder body (4)
With left inside cylinder body (5) outer surface transition fit, and it is sealed by a seal ring；Left end cap (3) and outer cylinder body (4) pass through screw
It is fixedly connected；Piston rod (2) middle section is machined with circular protrusions, and piston head (7) circumferential inner surface is round convex with piston rod (2)
Play section transitions cooperation；Piston head (7) left end and piston rod (2) pass through left taper bolt (6) progress axially position；Piston head (7)
Right end and piston rod (2) pass through right taper bolt (8) progress axially position；Piston head (7) outer surface and left inside cylinder body (5) inner surface
Clearance fit, and be sealed by a seal ring；Bobbin winder bracket (10) left end and left inside cylinder body (5) outer surface transition fit, and lead to
Sealing ring is crossed to be sealed；Bobbin winder bracket (10) right end and right inner cylinder body (12) outer surface transition fit, and carried out by sealing ring
Sealing；Magnet exciting coil (11) is wound in the winding slot (1001) of bobbin winder bracket (10), and lead draws via right inner cylinder body (12)
Wire casing (1201) is drawn outside damper from the fairlead (1301) of right end cap (13)；Spool (9) central part is provided with stepped hole
(903), it and in left end is machined with round boss (901), spool (9) left end round boss (901) and piston rod (2) right end gap
Cooperation, and be sealed by a seal ring；It is externally threaded on the right side of spool (9), the internal screw thread that can be opened with right end cap (13) middle part
Hole is threadedly coupled, and is positioned by locking nut (14) mechanical interlocking；Piston rod (2) right end can be in spool (9) center rank
It is moved left and right in terraced hole (903)；Working position is designed to round table-like on the left of spool (9), is formed outside the taper with certain angle
Surface (902)；It is provided with through-hole (904) on the right side of spool (9), through-hole (904) is connected with atmosphere, ensure that piston rod (2) right end exists
Air pressure when moving left and right in spool (9) central stepped (903) in central stepped (903) is constant；Spool (9) right-hand end
It is provided with pin hole (905), the pin hole on corresponding right lifting lug (15) can be connect with cross like spanner；Spool (9) outer surface (902) and around
Coil holder (10) inner surface (1002) is using the tapered surface structure with certain angle, spool (9) outer surface (902) and bobbin winder bracket
(10) gap between inner surface (1002) forms taper fluid course A；Bobbin winder bracket (10) outer surface and outer cylinder body (4) inner surface
Gap using smooth cylindrical surface structure, and between the two is 1mm, bobbin winder bracket (10) outer surface and outer cylinder body (4) inner surface
Between gap formed circular ring shape fluid course B；Taper fluid course A constitutes fluid course of connecting with circular ring shape fluid course B
Structure；When being passed through a certain size exciting current in magnet exciting coil (11), since the magnetic line of force warp that electromagnetic induction generates is outer
Cylinder body (4), circular ring shape fluid course B, bobbin winder bracket (10), taper fluid course A reach spool (9), logical using taper liquid stream
Road A, bobbin winder bracket (10), circular ring shape fluid course B return to outer cylinder body (4), form closed circuit；At this time in series connection fluid course
Form I, II, III, IV 4 section of effective damping gap；Right end cap (13) and right inner cylinder body (12) inner surface transition fit, and pass through
Sealing ring is sealed；Right end cap (13) is fixedly connected with right inner cylinder body (12) by screw；Outer cylinder body (4) and right inner cylinder body
(12) outer surface transition fit, and be sealed by a seal ring；Right end cap (13) and outer cylinder body (4) connect by the way that screw is fixed
It connects；Right lifting lug (15) is connect with spool (9) right end by screw threads for fastening；It is uniform that left inside cylinder body (5) left side is machined with 5 circumferential directions
The internal thread hole of arrangement, 5 circular through holes opened on corresponding left end cap (3) can be played by screw and be connected with left end cap (3) positioning
Connect effect；Left inside cylinder body (5) left outer surface is circumferentially uniformly provided with 5 round water conservancy diversion through-holes, rise connection piston head (7) left chamber with
The effect of piston head (7) right chamber；Right inner cylinder body (12) right side is machined with 5 internal thread holes being arranged circumferentially, corresponding right end
5 circular through holes opened on lid (13), can play the role of being located by connecting with right end cap (13) by screw；Right inner cylinder body (12) is right
Side external surface is circumferentially uniformly provided with 5 round water conservancy diversion through-holes, plays connection piston head (7) right chamber and piston head (7) left chamber；Valve
Core (9), bobbin winder bracket (10) and magnet exciting coil (11) three constitute the adjustable unicoil MR valve structure of a damping clearance, lead to
The damping clearance thickness of taper fluid course A can be changed in the position for overregulating spool (9), to adjust when magnetorheological fluid flows through
Damping force；Outer cylinder body (4), spool (9) and bobbin winder bracket (10) are made of low-carbon permeability magnetic material respectively；Remaining parts are by non-magnetic
Material is made.
Compared with the background technology, the present invention, it has the beneficial effect that
(1) MR damper of the present invention is not increasing MR damper outer dimension using series connection liquid flowing channel structure
Under the premise of, biggish controllable damping force can be obtained under the effect of lesser exciting current.With the magnetic of single circular ring shape fluid course
Rheological damper is compared, and damping force dynamic regulation range is wider, especially suitable for the industries vibration insulating system such as railway, traffic.
(2) MR damper of the present invention is when being passed through a certain size exciting current into magnet exciting coil, due to electromagnetism
Incude the magnetic line of force generated and reaches spool through outer cylinder body, circular ring shape fluid course B, bobbin winder bracket, taper fluid course A, using
Taper fluid course A, bobbin winder bracket, circular ring shape fluid course B return to outer cylinder body, form closed circuit；In the field circuit of closure
In, I, II, III, IV 4 section of effective damping gap is formed at fluid course of connecting, takes full advantage of magnetic field performance.
(3) compared with the routinely MR damper of fixed damping clearance, the bobbin winder bracket of MR damper of the present invention with
The taper fluid course A constituted between spool can form the effective damping gap of two sections of tapers；Spool, bobbin winder bracket and magnet exciting coil
Three constitutes the adjustable unicoil MR valve structure of a damping clearance；The taper formed between spool and bobbin winder bracket effectively hinders
Buddhist nun's clearance distance is adjustable, and damping force size when magnetorheological fluid flows through can be changed in the position of adjusting spool, adjusts its damping force
Range is wider, and MR damper working performance is more preferable.
(4) part used in MR damper of the present invention is except outer cylinder body, spool and bobbin winder bracket are by mild steel permeability magnetic material
Outside being made, remaining parts are made of un-conducted magnetic material.This design can effectively ensure that magnetic line of force integrated distribution as far as possible four
In section effective damping gap, effect of the vertical magnetic field to magnetorheological fluid is given full play to, the efficiency of MR damper is improved, and is had
Effect reduces the energy consumption of MR damper.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is right end cap cross-sectional view of the present invention.
Fig. 3 is right end cap left view of the present invention.
Fig. 4 is bobbin winder bracket cross-sectional view of the present invention.
Fig. 5 is spool cross-sectional view of the present invention.
Fig. 6 is the left inside cylinder body cross-sectional view of the present invention.
Fig. 7 is the left inside cylinder body right view of the present invention.
Fig. 8 is the right inner cylinder body cross-sectional view of the present invention.
Fig. 9 is the right inner cylinder body left view of the present invention.
Figure 10 is distribution diagram of magnetic line of force when the present invention is powered on.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 show schematic structural view of the invention.Specifically include that left lifting lug 1, piston rod 2, left end cap 3, outer cylinder body 4, left inside cylinder
Body 5, left taper bolt 6, piston head 7, right taper bolt 8, spool 9, bobbin winder bracket 10, magnet exciting coil 11, right inner cylinder body 12, right end cap
13, locking nut 14 and right lifting lug 15.
Fig. 2 show right end cap cross-sectional view of the present invention, and Fig. 3 is right end cap left view of the present invention.In 13 right side of right end cap
The heart is machined with a circular through hole, can play axially position to 2 left end of piston rod；13 right side outer ring of right end cap is machined with 6
A circular through hole being arranged circumferentially, corresponding outer cylinder body 4 left side 6 threaded hole, it is fixed with outer cylinder body 4 to be played by screw
Position connection function；13 right side inner ring of right end cap is machined with 5 circular through holes being arranged circumferentially, and corresponding left inside cylinder body 5 is left
The threaded hole of end face 5 can play the role of being located by connecting with left inside cylinder body 5 by screw；13 right side of right end cap is provided with one and draws
String holes 1301 corresponds to the wire lead slot 1201 on right inner cylinder body 12, and the lead of magnet exciting coil 11 can be drawn from fairlead 1301 to be damped
Device.
Fig. 4 show bobbin winder bracket cross-sectional view of the present invention.Winding slot 1001 is machined on bobbin winder bracket 10, magnet exciting coil 11 is wound
In the winding slot 1001 on bobbin winder bracket 10, lead via right inner cylinder body 12 wire lead slot 1201, from the lead of right end cap 13
Draw damper in hole 1301；It is designed to round table-like through-hole in the middle part of bobbin winder bracket 10, forms cone-shaped inner surface 1002.
Fig. 5 show spool cross-sectional view of the present invention.9 central part of spool is provided with stepped hole 903, and is machined with circle in left end
Shape boss 901,2 right end of piston rod can move left and right in 9 central stepped 903 of spool；9 left side working position of spool is designed to
It is round table-like, form the conical outer surface 902 with certain angle；Through-hole 904, through-hole 904 and big gas phase are provided on the right side of spool 9
Even, it ensure that when 2 right end of piston rod moves left and right in 9 central stepped 903 of spool in central stepped 903 air pressure not
Become；9 right-hand end of spool is provided with pin hole 905, and the pin hole on corresponding right lifting lug 15 can be connect with cross like spanner.
Fig. 6 show the left inside cylinder body cross-sectional view of the present invention, and Fig. 7 show the left inside cylinder body right view of the present invention.Left inside cylinder body 5
Left side is machined with 5 threaded holes being arranged circumferentially, and 5 circular through holes opened on corresponding left end cap 3 can be risen by screw
To with the effect of being located by connecting of left end cap 3；Left inside 5 left outer surface of cylinder body is circumferentially uniformly provided with 5 round water conservancy diversion through-holes, plays connection
7 left chamber of piston head and 7 right chamber of piston head act on.
Fig. 8 show the right inner cylinder body cross-sectional view of the present invention, and Fig. 9 show the right inner cylinder body left view of the present invention.Right inner cylinder body
12 right sides are machined with 5 internal thread holes being arranged circumferentially, and 5 circular through holes opened on corresponding right end cap 13 pass through spiral shell
Nail can play the role of being located by connecting with right end cap 13；It is logical that right 12 right side outer surface of inner cylinder body is circumferentially uniformly provided with 5 round water conservancy diversion
Connection 7 right chamber of piston head and 7 left chamber of piston head are played in hole.
Figure 10 show distribution diagram of magnetic line of force when the present invention is powered on.9 outer surface 902 of spool and 10 inner surface of bobbin winder bracket
1002 form taper fluid course A using the tapered surface structure with certain angle, gap；10 outer surface of bobbin winder bracket and outer shell
4 inner surface of body uses smooth cylindrical surface structure, and gap between the two is 1mm, and gap forms circular ring shape fluid course
B；The fluid course A and circular ring shape fluid course B of taper constitute liquid flowing channel structure of connecting；When being passed through one into magnet exciting coil 11
When determining the exciting current work of size, since the magnetic line of force of electromagnetic induction generation is through outer cylinder body 4, circular ring shape fluid course B, coiling
Frame 10, taper fluid course A reach spool 9, return using taper fluid course A, bobbin winder bracket 10, circular ring shape fluid course B
Outer cylinder body 4 forms closed circuit；I, II, III, IV 4 section of effective damping gap is formed at series connection fluid course at this time.
Working principle of the invention is as follows:
As shown in Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10,9 outer surface 902 of spool and 10 inner surface 1002 of bobbin winder bracket are using with one
Determine the tapered surface structure of angle, it is logical that the gap between 10 inner surface 1002 of 9 outer surface 902 of spool and bobbin winder bracket forms taper liquid stream
Road A.10 outer surface of bobbin winder bracket and 4 inner surface of outer cylinder body use smooth cylindrical surface structure, and gap between the two is 1mm,
Gap between 4 inner surface of 10 outer surface of bobbin winder bracket and outer cylinder body forms circular ring shape fluid course B.Taper fluid course A and circle
Annular fluid course B constitutes series connection liquid flowing channel structure.When being passed through a certain size exciting current into magnet exciting coil 11, by
Valve is reached through outer cylinder body 4, circular ring shape fluid course B, bobbin winder bracket 10, taper fluid course A in the magnetic line of force that electromagnetic induction generates
Core 9 returns to outer cylinder body 4 using taper fluid course A, bobbin winder bracket 10, circular ring shape fluid course B, forms closed circuit.At this time
I, II, III, IV 4 section of effective damping gap will be formed at series connection fluid course.Wherein constituted between bobbin winder bracket 10 and spool 9
Taper fluid course A can form two sections of taper effective damping gaps, spool 9, bobbin winder bracket 10 and 11 three of magnet exciting coil are constituted
The adjustable unicoil MR valve structure of one damping clearance can be changed taper fluid course A's by the position of adjusting spool 9
Effective damping gap thickness, to play the role of adjusting damping force size when magnetorheological fluid flows through.
Claims (4)
1. a kind of damping clearance adjustable type magnetic rheology damper with series connection fluid course, characterized by comprising: left lifting lug
(1), piston rod (2), left end cap (3), outer cylinder body (4), left inside cylinder body (5), left taper bolt (6), piston head (7), right taper bolt
(8), spool (9), bobbin winder bracket (10), magnet exciting coil (11), right inner cylinder body (12), right end cap (13), locking nut (14) and the right side
Lifting lug (15)；Piston rod (2) left end is connect with left lifting lug (1) by screw threads for fastening；It is machined among left end cap (3) round logical
Hole, piston rod (2) and left end cap (3) circular through hole internal surface gaps cooperate, and are sealed by a seal ring；Left end cap (3)
With left inside cylinder body (5) inner surface transition fit, and it is sealed by a seal ring；Left end cap (3) and left inside cylinder body (5) pass through spiral shell
Nail is fixedly connected；Outer cylinder body (4) and left inside cylinder body (5) outer surface transition fit, and be sealed by a seal ring；Left end cap
(3) it is fixedly connected with outer cylinder body (4) by screw；Piston rod (2) middle section is machined with circular protrusions, piston head (7) circumference
Inner surface and piston rod (2) circular protruding portion transition fit；Piston head (7) left end and piston rod (2) pass through left taper bolt (6)
Carry out axially position；Piston head (7) right end and piston rod (2) pass through right taper bolt (8) progress axially position；Piston head (7) is outside
Surface and left inside cylinder body (5) internal surface gaps cooperate, and are sealed by a seal ring；Bobbin winder bracket (10) left end and left inside cylinder body
(5) outer surface transition fit, and be sealed by a seal ring；Bobbin winder bracket (10) right end and right inner cylinder body (12) outer surface transition
Cooperation, and be sealed by a seal ring；Magnet exciting coil (11) is wound in the winding slot (1001) of bobbin winder bracket (10), lead
Via the wire lead slot (1201) of right inner cylinder body (12), drawn outside damper from the fairlead (1301) of right end cap (13)；Spool (9)
Central part is provided with stepped hole (903), and is machined with round boss (901) in left end, spool (9) left end round boss (901)
With piston rod (2) right end clearance fit, and it is sealed by a seal ring；It is externally threaded on the right side of spool (9), it can be with right end cap
(13) internal thread hole that middle part is opened is threadedly coupled, and is positioned by locking nut (14) mechanical interlocking；Piston rod (2) right end
It can be moved left and right in spool (9) central stepped (903)；Working position is designed to round table-like that formation has on the left of spool (9)
The conical outer surface (902) of certain angle；It is provided with through-hole (904) on the right side of spool (9), through-hole (904) is connected with atmosphere, ensure that
Air pressure when piston rod (2) right end moves left and right in spool (9) central stepped (903) in central stepped (903) is constant；
Spool (9) right-hand end is provided with pin hole (905), and the pin hole on corresponding right lifting lug (15) can be connect with cross like spanner；Spool (9)
Outer surface (902) and bobbin winder bracket (10) inner surface (1002) are using the tapered surface structure with certain angle, spool (9) outer surface
(902) gap between bobbin winder bracket (10) inner surface (1002) forms taper fluid course A；Bobbin winder bracket (10) outer surface and outer
Cylinder body (4) inner surface uses smooth cylindrical surface structure, and gap between the two is 1mm, bobbin winder bracket (10) outer surface and outer
Gap between cylinder body (4) inner surface forms circular ring shape fluid course B；Taper fluid course A and circular ring shape fluid course B is constituted
Series connection liquid flowing channel structure；When being passed through a certain size exciting current in magnet exciting coil (11), since electromagnetic induction generates
The magnetic line of force reach spool (9) through outer cylinder body (4), circular ring shape fluid course B, bobbin winder bracket (10), taper fluid course A, then pass through
It crosses taper fluid course A, bobbin winder bracket (10), circular ring shape fluid course B and returns to outer cylinder body (4), form closed circuit；It is going here and there at this time
Join and forms I, II, III, IV 4 section of effective damping gap in fluid course；Right end cap (13) and right inner cylinder body (12) inner surface transition
Cooperation, and be sealed by a seal ring；Right end cap (13) is fixedly connected with right inner cylinder body (12) by screw；Outer cylinder body (4)
With right inner cylinder body (12) outer surface transition fit, and it is sealed by a seal ring；Right end cap (13) and outer cylinder body (4) pass through spiral shell
Nail is fixedly connected；Right lifting lug (15) is connect with spool (9) right end by screw threads for fastening.
2. a kind of damping clearance adjustable type magnetic rheology damper with series connection fluid course according to claim 1,
Be characterized in that: left inside cylinder body (5) left side is machined with 5 internal thread holes being arranged circumferentially, and opens on corresponding left end cap (3)
5 circular through holes can play the role of being located by connecting with left end cap (3) by screw；Left inside cylinder body (5) left outer surface is circumferentially equal
It is even to be provided with 5 round water conservancy diversion through-holes, play connection piston head (7) left chamber and piston head (7) right chamber；Right inner cylinder body (12) right end
Face is machined with 5 internal thread holes being arranged circumferentially, and 5 circular through holes opened on corresponding right end cap (13) can by screw
Play the role of being located by connecting with right end cap (13)；It is logical to be circumferentially uniformly provided with 5 round water conservancy diversion for outer surface on the right side of right inner cylinder body (12)
Connection piston head (7) right chamber and piston head (7) left chamber are played in hole.
3. a kind of damping clearance adjustable type magnetic rheology damper with series connection fluid course according to claim 1,
Be characterized in that: spool (9), bobbin winder bracket (10) and magnet exciting coil (11) three constitute the adjustable unicoil magnetic current of a damping clearance
Become valve arrangement, the damping clearance thickness of taper fluid course A can be changed by the position of adjusting spool (9), to adjust magnetic current
Become liquid stream through when damping force.
4. a kind of damping clearance adjustable type magnetic rheology damper with series connection fluid course according to claim 1,
Be characterized in that: outer cylinder body (4), spool (9) and bobbin winder bracket (10) are made of low-carbon permeability magnetic material respectively；Remaining parts are not by leading
Magnetic material is made.
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| CN201811111347.8A CN108953467B (en) | 2018-09-23 | 2018-09-23 | Damping gap adjustable magneto-rheological damper with serial liquid flow channels |
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| CN113757292B (en) * | 2021-09-16 | 2022-11-11 | 昆明理工大学 | Multi-channel aircraft landing gear magneto-rheological shimmy damper, control method, system and application |
| CN114791027A (en) * | 2021-10-11 | 2022-07-26 | 广西科技大学 | Damping clearance adjustable embeds hydraulic valve formula attenuator |
| CN114791026A (en) * | 2021-10-11 | 2022-07-26 | 广西科技大学 | Mixed valve type magnetorheological damper |
| CN114791026B (en) * | 2021-10-11 | 2023-05-05 | 广西科技大学 | Mixed valve type magneto-rheological damper |
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