CN109973580A - A kind of MR damper suitable for high speed impact - Google Patents
A kind of MR damper suitable for high speed impact Download PDFInfo
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- CN109973580A CN109973580A CN201910346437.3A CN201910346437A CN109973580A CN 109973580 A CN109973580 A CN 109973580A CN 201910346437 A CN201910346437 A CN 201910346437A CN 109973580 A CN109973580 A CN 109973580A
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- China
- Prior art keywords
- piston
- piston rod
- cylinder body
- damper
- end caps
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
- F16F9/3242—Constructional features of cylinders of cylinder ends, e.g. caps
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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
- F16F9/53—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)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid-Damping Devices (AREA)
Abstract
A kind of MR damper suitable for high speed impact, is related to a kind of MR damper.Cylinder body connect with cylinder end caps and covers on the outside of piston rod, there is interior magnet exciting coil in ring winding slot, and piston end cap is covered in installation base two sides and is bonded with cylinder body；The heavy chamber one of annular is bonded with outer magnetic pole other end of the ring set on the outside of installation base, and the outer enclosure of piston outside the reel that outer magnet exciting coil is wound and is fixed between outer magnetic pole；There is blind hole in piston rod one end, and ring winding slot groove bottom has the wire guide one being connected to blind hole, and there is wire guide two in reel bottom surface.Present invention decreases the minimum damping forces that MR damper generates, and increase the damping force controlled range of MR damper, have widened application range of the MR damper in high speed impact protection.
Description
Technical field
The present invention relates to a kind of MR damper, especially a kind of MR damper suitable for high speed impact belongs to
In shock mitigation system technical field.
Background technique
MR damper is that the rheological properties such as stickiness and plasticity occur under the action of an external magnetic field using magnetorheological fluid
Change dramatically and manufactured half active actuators part.MR damper have fast response time, structure simple, high reliablity,
Damping force adjustable extent is big and low power consumption and other advantages.By reasonable control strategy, half active based on MR damper
Surge guard system has the characteristics that good buffer effect and environmental suitability are strong compared with passive protection system, and landing in lander is
The fields such as system, Helicopter Seat anti-crash system, aircraft carrier arresting system, undercarriage and vehicle suspension have wide answer
Use prospect.
Magnetorheological fluid throttling passage of the existing Design of MR dampers by magnetic field perpendicular acting, MR damper
Piston and cylinder body occur relative motion when, piston press magnetorheological fluid enters throttling passage.When have in throttling passage perpendicular to
When magnetorheological fluid flows the magnetic fields in direction, with the increase of magnetic field strength, the shear yield stress of magnetorheological fluid increases, magnetic
Rheology liquid is hardened to visco-plastic body, and the damping force of MR damper increases at this time, and the size of damping force can be by magnetic field strength control
System.When not having magnetic fields in throttling passage, magnetorheological fluid is the Newtonian fluid with certain viscosity, at this time magnetorheological damping
The uncontrollable viscous damping power that device generates is the minimum damping force of MR damper.Under high speed impact, existing magnetic current variable resistance
Buddhist nun's device is larger because configuration limits uncontrollable viscous damping power.Biggish uncontrollable viscous damping power can cause shielded load
Injury, this severely limits application of the MR damper in half active surge guard.Therefore, in order to meet magnetorheological damping
Performance requirement of the device under high speed impact proposes that a kind of small MR damper of damping force under high speed impact is industry urgency
Problem to be solved.
Summary of the invention
It is an object of the invention to solve the problems in the background art, the present invention provides a kind of suitable for high-speed punching
The MR damper hit.
Realize that above-mentioned purpose, the present invention take following technical proposals: a kind of MR damper suitable for high speed impact,
Including piston rod, cylinder body, cylinder end caps, piston outer cover, reel, interior magnet exciting coil, outer magnet exciting coil, two outer magnetic poles and
Two piston end caps, the horizontal placement of the cylinder body and one end is open end, open end and the cylinder end caps of cylinder body are detachably fixed
Connection；The piston outer cover, two outer magnetic poles and two piston end caps are torus structure, the piston outer cover both ends of the surface
Inside edge be circumferentially with annular groove along it, an end face of each outer magnetic pole is circumferentially with annular along respective
Boss, is equipped with the heavy chamber one of annular in the middle part of each one end face of piston end cap, in each heavy one bottom surface of chamber of annular
Portion is equipped with the heavy chamber two of annular, and the bottom surface of each heavy chamber two of annular is equipped with multiple liquid flow holes, each piston end cap it is outer
Side is circumferentially with sealing ring mounting groove along respective, and the cylinder body and cylinder end caps are closely sleeved on piston rod both ends
The outside and both ends of piston rod are extend out to outside cylinder body and cylinder end caps, the installation base on the piston rod outer wall are equipped with ring
Shape winding slot is wound with interior magnet exciting coil in the ring winding slot, and described two piston end caps, which are detachably fixed, is sleeved on peace
The two sides of boss are filled, the outer wall of two piston end caps and the inner wall of cylinder body fit closely；The heavy chamber one of the annular of two piston end caps
Be oppositely arranged, and each piston end cap annular sink chamber one fitted closely with the other end of corresponding outer magnetic pole, described two
A outer magnetic pole ring set is mounted in the outside of piston rod installation base, and the piston outer cover is closely sleeved on the outside of reel and consolidates
It is scheduled between two outer magnetic poles, the reel is intertwined and connected with outer magnet exciting coil；Piston outer cover, reel, interior magnet exciting coil,
Outer magnet exciting coil, two outer magnetic poles and two piston end caps constitute piston head mechanism, the piston head mechanism and piston rod structure
At piston mechanism, the inner cavity of cylinder body is divided into left chamber and right chamber by piston mechanism, the inner wall of reel and two outer magnetic poles with
Gap between the outer wall of piston rod installation base is connected to setting composition magnetorheological fluid with multiple liquid flow holes of two piston end caps
Throttling passage；One end of piston rod is equipped with blind hole, and the groove bottom of the ring winding slot is equipped with the conducting wire being connected to the blind hole
The bottom surface of Kong Yi, reel are equipped with wire guide two.
Compared with prior art, the beneficial effects of the present invention are:
The coil of original MR damper magnetorheological fluid throttling passage side is evenly distributed in throttling passage by the present invention
On the one hand outer two sides can shorten the response time of MR damper, on the other hand when two coils are passed through the electricity of the same direction
When stream, the magnetic field flowed perpendicular to liquid is generated in throttling passage, the direction that the direction of magnetic linkage and liquid flow in channel at this time
Vertically, magnetic linkage hinders flowing of the magnetorheological fluid in throttling passage, and the damping force generated at this time is larger, and the size of damping force can be by
Impressed current control；When two coils are passed through the electric current of opposite direction, the magnetic field for being parallel to liquid flowing is generated in throttling passage,
The direction of magnetic linkage is parallel with the direction that liquid flows in channel, and the viscosity of liquid is small compared with null field viscosity, and in addition magnetic linkage inhibits magnetic
Turbulent flow phenomenon of the rheology liquid under flow at high speed, the damping force generated at this time are small compared with null field damping force.Accordingly, with respect to existing
MR damper, the present invention are produced in no change MR damper external dimensions, exciting current and MR damper
Under the premise of raw maximum damping force, the minimum damping force of MR damper generation is reduced, MR damper is increased
Damping force controlled range, widened MR damper high speed impact protection in application range.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the MR damper suitable for high speed impact of the invention；
Fig. 2 is the enlarged drawing at the T of Fig. 1；
Fig. 3 is the main view of piston outer cover；
Fig. 4 is the D-D cross-sectional view of Fig. 3；
Fig. 5 is the main view of outer magnetic pole；
Fig. 6 is the F-F cross-sectional view of Fig. 5；
Fig. 7 is the main view of piston end cap；
Fig. 8 is the L-L cross-sectional view of Fig. 7；
Fig. 9 is the cross-sectional view of piston rod；
The magnetic line of force distribution signal that Figure 10 is interior magnet exciting coil when being passed through identical size, contrary electric current with outer magnet exciting coil
Figure；
Figure 11 be interior magnet exciting coil with outer magnet exciting coil be passed through size is identical, the identical electric current in direction when magnetic line of force distribution signal
Figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, is clearly and completely retouched to the technical solution in the present invention
It states, it is clear that described embodiment is only a part of the embodiment of invention, instead of all the embodiments, based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts,
It shall fall within the protection scope of the present invention.
Specific embodiment 1: the invention discloses a kind of suitable for the magnetorheological of high speed impact as shown in Fig. 1 ~ Figure 11
Damper, including piston rod 1, cylinder body 2, cylinder end caps 2-1, piston outer cover 3, reel 6, interior magnet exciting coil 7, outer magnet exciting coil
8, two outer magnetic poles 4 and two piston end caps 5,
The horizontal placement of the cylinder body 2 and one end is open end, the open end of cylinder body 2 is detachably fixed with cylinder end caps 2-1 to be connect；
3, two outer magnetic poles 4 of the piston outer cover and two piston end caps 5 are torus structure, 3 both ends of the surface of piston outer cover
Inside edge be circumferentially with annular groove C along it, an end face of each outer magnetic pole 4 is circumferentially with ring along respective
Shape boss E is equipped with heavy one H of chamber of annular, each heavy one bottom H of chamber of annular in the middle part of each 5 one end face of piston end cap
Heavy two G of chamber of annular is equipped in the middle part of face, the bottom surface of each heavy two G of chamber of annular is equipped with multiple (four) liquid flow hole Q, often
The lateral surface of a piston end cap 5 is circumferentially with sealing ring mounting groove K along respective, and the piston rod 1 is double rod pistons out
Bar, the cylinder body 2 and cylinder end caps 2-1 are closely sleeved on the outside at 1 both ends of piston rod and the both ends of piston rod 1 and extend out to
Outside cylinder body 2 and cylinder end caps 2-1, the installation base J on 1 outer wall of piston rod is equipped with ring winding slot M, the annular around
Interior magnet exciting coil 7 is wound in wire casing M, described two piston end caps 5 are detachably fixed the two sides (work for being sleeved on installation base J
The two sides of the installation base J of stopper rod 1 are closely set with a piston end cap 5 and a locking nut 9 respectively, on piston rod 1
Be all provided with external screw thread with two 9 opposite positions of locking nut, piston rod 1 and two piston end caps 5 by two locking nuts 9 with
The mode that corresponding external screw thread is locked is detachably fixed connection), the inner wall of the outer wall and cylinder body 2 of two piston end caps 5 is tight
Closely connected conjunction；The annulars of two piston end caps 5 sinks being oppositely arranged of one H of chamber, and the annular of each piston end cap 5 sink one H of chamber with it is right
The other end for the outer magnetic pole 4 answered fits closely, and described two 4 ring sets of outer magnetic pole are mounted in the outside of 1 installation base J of piston rod,
The piston outer cover 3 is closely sleeved on the outside of reel 6 and is fixed between two outer magnetic poles 4 (two of piston outer cover 3
Annular groove C is clamped with the annular convex platform E of corresponding outer magnetic pole 4 respectively, the both ends of 6 outer wall of reel and corresponding outer magnetic pole 4
The inner wall of annular convex platform E fit closely), the reel 6 is intertwined and connected with outer magnet exciting coil 8；Piston outer cover 3, reel
6, interior magnet exciting coil 7,8, two outer magnetic poles 4 of outer magnet exciting coil and two piston end caps 5 constitute piston head mechanism, the piston
Head mechanism and piston rod 1 constitute piston mechanism, and piston mechanism moves back and forth along 2 inner wall of cylinder body, and piston mechanism will be in cylinder body 2
Chamber is divided into left chamber A and right chamber B, between the outer wall of the 1 installation base J of inner wall and piston rod of reel 6 and two outer magnetic poles 4
Gap be connected to multiple liquid flow hole Q of two piston end caps 5 setting composition magnetorheological fluid throttling passage R；The left chamber A and
Magnetorheological fluid in right chamber B passes through magnetorheological fluid throttling passage R connection；Interior magnet exciting coil 7 and outer magnet exciting coil 8 are along magnetorheological
Wound with one heart inside and outside liquid throttling passage R, when coiling, wind first in magnet exciting coil 7 conducting wire, then fix reel
6, need successively to assemble side piston end cap 5, side outer magnetic pole 4, reel 6,4 and of the other side outer magnetic pole when fixing reel 6
Other side piston end cap 5 finally winds the conducting wire of outer magnet exciting coil 8；One end of piston rod 1 is equipped with blind hole P, the ring winding
The groove bottom of slot M is equipped with one N of wire guide being connected to the blind hole P, and the bottom surface of reel 6 is equipped with two S of wire guide, outer excitation wire
The conducting wire of circle 8 is drawn out to magnetic current by passing through wire guide one N and blind hole P together with the conducting wire of interior magnet exciting coil 7 after wire guide two
Except variable damping device.
Specific embodiment 2: as shown in Figure 1, present embodiment is made furtherly to specific embodiment one
It is bright, at least one cylinder cap sealing ring 10-1 is equipped between the cylinder body 2 and cylinder end caps 2-1, cylinder body 2 and cylinder end caps 2-1 are logical
Cross cylinder cap sealing ring 10-1 static seal.
Specific embodiment 3: as shown in Figure 1, 2, present embodiment is made furtherly to specific embodiment one
It is bright, it is equipped with piston end cap sealing ring 10-2 between the outer wall of each piston end cap 5 and the inner wall of cylinder body 2, it is each described
Piston end cap sealing ring 10-2 is respectively provided in the sealing ring mounting groove K of corresponding piston end cap 5, and piston end cap 5 and cylinder body 2 are logical
Cross piston end cap seal circle 10-2 dynamic sealing.
Specific embodiment 4: as shown in Figure 1, present embodiment is made furtherly to specific embodiment one
It is bright, at least one piston rod right end sealing ring 10-3 is equipped between the cylinder body 2 and the right end of piston rod 1.
Specific embodiment 5: as shown in Figure 1, present embodiment is to specific embodiment one to specific embodiment four
In the further explanation made of any specific embodiment, be equipped at least between the cylinder end caps 2-1 and the left end of piston rod 1
One piston rod left end sealing ring 10-4.The both ends of piston rod 1 and cylinder body 2 and cylinder end caps 2-1 pass through the piston rod right side respectively
Hold sealing ring 10-3 and piston rod left end sealing ring 10-4 dynamic sealing.
The cylinder cap sealing ring 10-1, piston end cap sealing ring 10-2, piston rod right end sealing ring 10-3 and piston rod
Left end sealing ring 10-4 is O-ring seal.
In addition to reel 6 and two piston end caps 5 are non-magnet material, other components of the invention are permeability magnetic material.
The present invention can be produced not changing existing MR damper external dimensions, exciting current and MR damper
Under the premise of raw maximum damping force, it is effectively reduced minimum damping force caused by MR damper, meets high speed impact
The requirement of lower MR damper controlled speed range.
Figure 11 is the magnetic line of force point when interior magnet exciting coil 7 and outer magnet exciting coil 8 are passed through the identical electric current in equal in magnitude, direction
Cloth schematic diagram.In this case, the magnetic field flowed to perpendicular to liquid is generated in the R of magnetorheological fluid damp channel.
Figure 10 is the magnetic line of force point when interior magnet exciting coil 7 and outer magnet exciting coil 8 are passed through equal in magnitude, contrary electric current
Cloth schematic diagram.In this case, the magnetic field for being parallel to liquid flow direction is generated in the R of magnetorheological fluid damp channel.
Working principle of the present invention is as follows: when MR damper piston rod moves downward, magnetorheological fluid in left chamber A
When being squeezed, magnetorheological fluid flows through magnetorheological fluid throttling passage R and enters right chamber B in left chamber A at this time.Certainly because of magnetorheological fluid
The shear yielding power that body viscosity or magnetic fields generate, liquid generates pressure difference when flowing through magnetorheological fluid throttling passage R, in piston
The damping force of end face generation effect.When interior magnet exciting coil 7 and outer magnet exciting coil 8 are passed through the identical electric current in equal in magnitude, direction,
The magnetic field flowed to perpendicular to liquid is generated in the R of magnetorheological fluid damp channel, the magnetic-particle in magnetic rheological liquid is connected with each other, edge
The arrangement of magnetic direction chaining pencil, forms the magnetic linkage vertical with liquid flow direction along magnetic induction line direction.Liquid is limited in this way
The flowing of body, magnetic rheological liquid need to break through magnetic linkage in flowing, and MR damper generates biggish damping force at this time.When interior
It is generated when magnet exciting coil 7 and outer magnet exciting coil 8 are passed through equal in magnitude, contrary electric current, in the R of magnetorheological fluid damp channel flat
Row forms the magnetic linkage parallel with liquid flow direction in the magnetic field that liquid flows to along magnetic induction line direction at this time in throttling passage.This
It is low compared with null field viscosity along liquid flow direction liquid viscosity in the case of kind, in flow at high speed, it is parallel to the magnetic linkage of liquid flow direction
The formation of turbulent flow is inhibited, MR damper generates lesser damping force.For existing MR damper is compared in the invention,
It can be in the maximum damping force for not changing existing MR damper external dimensions, exciting current and MR damper generation
Under the premise of, it is effectively reduced minimum damping force caused by magnetorheological damping power, meets MR damper under high speed impact
Controllable damping is than the requirement with controlled speed range.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in the form of others dress body.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that by all in the meaning and scope for the condition of equivalent for falling in claim
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. a kind of MR damper suitable for high speed impact, including piston rod (1), cylinder body (2), cylinder end caps (2-1), around
Spool (6), interior magnet exciting coil (7) and outer magnet exciting coil (8), the horizontal placement of the cylinder body (2) and one end is open end, cylinder body
(2) open end is detachably fixed with cylinder end caps (2-1) and connect；It is characterized by: the MR damper further includes living
Cover (3), two outer magnetic poles (4) and two piston end caps (5) beyond the Great Wall, the piston outer cover (3), two outer magnetic poles (4) and
Two piston end caps (5) are torus structure, and the inside edge of piston outer cover (3) both ends of the surface is circumferentially with ring along it
One end face of connected in star (C), each outer magnetic pole (4) is circumferentially with annular convex platform (E) along respective, each piston
It is equipped with the heavy chamber one (H) of annular in the middle part of (5) one end face of end cap, is equipped in the middle part of each described heavy bottom surface chamber one (H) of annular
The bottom surface of the heavy chamber two (G) of annular, each heavy chamber two (G) of annular is equipped with multiple liquid flow holes (Q), each piston end cap (5)
Lateral surface be circumferentially with sealing ring mounting groove (K) along respective, the cylinder body (2) and cylinder end caps (2-1) closely cover
Mounted in the outside at piston rod (1) both ends and the both ends of piston rod (1) extend out to cylinder body (2) and cylinder end caps (2-1) outside, described
Installation base (J) on piston rod (1) outer wall is equipped with ring winding slot (M), and interior encourage is wound in the ring winding slot (M)
Magnetic coil (7), described two piston end caps (5) are detachably fixed the two sides for being sleeved on installation base (J), two piston end caps
(5) outer wall and the inner wall of cylinder body (2) fit closely；The heavy chamber one (H) of the annular of two piston end caps (5) is oppositely arranged, and
The heavy chamber one (H) of the annular of each piston end cap (5) is fitted closely with the other end of corresponding outer magnetic pole (4), described two outer
Magnetic pole (4) ring set is mounted in the outside of piston rod (1) installation base (J), and the piston outer cover (3) is closely sleeved on reel
(6) it outside and is fixed between two outer magnetic poles (4), the reel (6) is intertwined and connected with outer magnet exciting coil (8)；Piston
Outer cover (3), reel (6), interior magnet exciting coil (7), outer magnet exciting coil (8), two outer magnetic poles (4) and two piston end caps
(5) piston head mechanism is constituted, the piston head mechanism and piston rod (1) constitute piston mechanism, and piston mechanism is interior by cylinder body (2)
Chamber is divided into left chamber (A) and right chamber (B), the inner wall and piston rod (1) installation base of reel (6) and two outer magnetic poles (4)
(J) it is logical that the gap between outer wall is connected to setting composition magnetorheological fluid throttling with multiple liquid flow holes (Q) of two piston end caps (5)
Road (R)；One end of piston rod (1) is equipped with blind hole (P), and the groove bottom of the ring winding slot (M) is equipped with the blind hole (P) even
The bottom surface of logical wire guide one (N), reel (6) is equipped with wire guide two (S).
2. a kind of MR damper suitable for high speed impact according to claim 1, it is characterised in that: the cylinder body
(2) at least one cylinder cap sealing ring (10-1) is equipped between cylinder end caps (2-1).
3. a kind of MR damper suitable for high speed impact according to claim 1, it is characterised in that: each described
Piston end cap sealing ring (10-2) is equipped between the outer wall of piston end cap (5) and the inner wall of cylinder body (2).
4. a kind of MR damper suitable for high speed impact according to claim 1, it is characterised in that: the cylinder body
(2) at least one piston rod right end sealing ring (10-3) is equipped between the right end of piston rod (1).
5. a kind of MR damper suitable for high speed impact described in any claim in -4 according to claim 1,
It is characterized in that: being equipped at least one piston rod left end sealing ring between the cylinder end caps (2-1) and the left end of piston rod (1)
(10-4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910346437.3A CN109973580B (en) | 2019-04-26 | 2019-04-26 | Magneto-rheological damper suitable for high-speed impact |
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| CN201910346437.3A CN109973580B (en) | 2019-04-26 | 2019-04-26 | Magneto-rheological damper suitable for high-speed impact |
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| CN109973580B CN109973580B (en) | 2020-09-08 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110711054A (en) * | 2019-08-03 | 2020-01-21 | 苏州自如医疗器械有限公司 | Artificial limb knee joint based on magneto-rheological damper |
| CN110822007A (en) * | 2019-12-10 | 2020-02-21 | 广东溢康通空气弹簧有限公司 | Magneto-rheological damper piston |
| CN112855828A (en) * | 2020-12-30 | 2021-05-28 | 哈尔滨工业大学 | Shock-absorbing damper of high-pile wharf |
| CN113586650A (en) * | 2021-08-19 | 2021-11-02 | 烟台宏远氧业股份有限公司 | Novel explosion door protection device for explosion decompression chamber |
| CN113757292A (en) * | 2021-09-16 | 2021-12-07 | 昆明理工大学 | Multi-channel aircraft landing gear magneto-rheological shimmy damper, control method, system and application |
| CN115143224A (en) * | 2022-08-10 | 2022-10-04 | 哈尔滨工业大学 | Magneto-rheological damper with low zero field damping force and wide damping adjustable range |
| CN118188747A (en) * | 2024-05-17 | 2024-06-14 | 南昌工程学院 | Multistage magnetorheological fluid channel piston head and damper |
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| CN113757292A (en) * | 2021-09-16 | 2021-12-07 | 昆明理工大学 | Multi-channel aircraft landing gear magneto-rheological shimmy damper, control method, system and application |
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