CN108757620A - A kind of twin coil MR valve that damping clearance is automatically adjusted with liquid flow path direction - Google Patents
A kind of twin coil MR valve that damping clearance is automatically adjusted with liquid flow path direction Download PDFInfo
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- CN108757620A CN108757620A CN201810908702.8A CN201810908702A CN108757620A CN 108757620 A CN108757620 A CN 108757620A CN 201810908702 A CN201810908702 A CN 201810908702A CN 108757620 A CN108757620 A CN 108757620A
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- valve
- spool
- core piston
- mouthfuls
- damping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Magnetically Actuated Valves (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses the twin coil MR valves that a kind of damping clearance is automatically adjusted with liquid flow path direction, are mainly made of caging bolt, end cap, resetting spring, valve body, spool, valve core piston, magnet exciting coil and bobbin winder bracket etc..Gap between bobbin winder bracket and valve body constitutes taper fluid course, forms multistage damping clearance in function of current inferior pyramidal fluid course in magnet exciting coil.When magnetorheological fluid is from when flowing to B mouthfuls for A mouthfuls, magnetorheological fluid pushes left valve core piston band movable valve plug to move right, and taper fluid course internal damping gap becomes smaller, and valve is imported and exported pressure drop and increased；When magnetorheological fluid is from when flowing to A mouthfuls for B mouthfuls, magnetorheological fluid pushes right valve core piston band movable valve plug to be moved to the left, and taper fluid course internal damping gap becomes larger, and valve inlet and outlet pressure drop becomes smaller.In the case where not changing exciting current size cases, MR valve of the present invention can realize that valve inlet and outlet pressure drop flows to variation with magnetorheological fluid and changes automatically, especially suitable for the valve-controlled cylinder system for requiring circuit pressure smaller.
Description
Technical field
The present invention relates to the twin coils that a kind of MR valve more particularly to a kind of damping clearance are automatically adjusted with liquid flow path direction
MR valve.
Background technology
In hydraulic control system, hydraulic control valve be mainly used to control the pressure of liquid stream in hydraulic actuator, flow and
Flow direction changes speed, direction, power and the sequence of movement of movement to control the startup of hydraulic actuator, stop
Deng to meet requirement of all kinds of hydraulic tests to load behaviors such as movement, speed, power and torques.Therefore the property of hydraulic control valve
The static characteristic, dynamic characteristic and functional reliability that hydraulic system can be directly influenced are the core controls in hydraulic control system
One of unit processed.With the development of new and high technology, requirement of the hydraulicdriven engineer application to Hydraulic Elements is higher and higher, tradition
Hydraulic control valve it is complicated, volume is big, processing request is high, easy to wear, of high cost, there is also not easy to control, low-response,
The problems such as work noise is big, functional reliability is low.
MR valve is a kind of novel hydraulic control valve using magnetorheological fluid as working media.Magnetorheological fluid is a kind of intelligence
Fluid can be the viscous modeling with certain shear yield strength from the Newtonian fluid umklappen of free-flowing under magnetic fields
Property body；Remove behind magnetic field and can revert to the Newtonian fluid of free-flowing.The pressure and flow of MR valve can be outer by controlling
Size of current is added to be controlled, the principal element for influencing pressure drop control and regulation is the thickness and effective length of damping clearance part.
It is simple in structure, processing cost is low, fast response time, noise is small, energy consumption is small, the operation is stable compared with conventional hydraulic control valve
Reliably, it and conducive to the realization of intelligent control, has a good application prospect.
In engineer application, magnetorheological fluid is often needed, with different pressure drops, two ways to be usually taken when flowing to different
It is realized：First, utilizing monitoring control devices liquid flow movement direction, when liquid stream is reversed, exciting current is big in change MR valve
Small, control system is complicated, and frequently changing electric current can cause MR valve temperature to rise aggravation；Second is that on MR valve by parallel connection
Road hydraulic valve, but this structure design occupied space is big, and poor controllability.
Invention content
In order to solve the problems, such as background technology and meet requirement of the MR valve in engineer application, the present invention carries
A kind of twin coil MR valve that damping clearance is automatically adjusted with liquid flow path direction is gone out.The spool and bobbin winder bracket of the MR valve are adopted
With the taper surface structure with certain angle, the gap between spool and bobbin winder bracket constitutes taper fluid course.When to excitation wire
When being passed through the electric current in a certain size and direction in circle, multistage damping clearance can be formed in taper fluid course, magnetorheological fluid exist
Flowing will be by shear stress in damping clearance.Left and right valve core piston, which with spool be threadedly coupled, constitutes a piston knot
Structure, resetting spring play automatic centering to it.When MR valve works, magnetorheological fluid pushes valve core piston band movable valve plug to liquid
Direction movement is flowed, this will cause damping clearance thickness to change, to realize under the premise of not changing exciting current, magnetic
Rheology valve imports and exports pressure drop and flows to variation with magnetorheological fluid and change automatically.In addition, adjusting the position of left limit bolt can change
Become the stroke that spool is moved to the left, to play damping clearance thickness when adjusting liquid flow path direction to the left；Adjust right limit bolt
Position can change the stroke that spool moves right, to play adjust liquid flow path direction to the right when damping clearance thickness.?
In the case of not changing exciting current size, by adjusting the position of left limit bolt or right limit bolt, it can be achieved that in difference
Independent regulation and control are carried out to the inlet and outlet pressure drop of MR valve when liquid flow path direction.
The technical solution adopted by the present invention to solve the technical problems includes：Left limit bolt (1), left end cap (2), Zuo Fu
Position spring (3), valve body (4), left valve core piston (5), spool (6), left magnet exciting coil (7), bobbin winder bracket (8), right magnet exciting coil
(9), right valve core piston (10), right resetting spring (11), right end cap (12) and right limit bolt (13)；Left end cap (2) and valve body
(4) it is fixedly connected by screw；Left end cap (2) coordinates with valve body (4) transition, and is sealed by a seal ring；Right end cap
(12) it is fixedly connected by screw with valve body (4)；Right end cap (12) and valve body (4) transition coordinate, and are carried out by sealing ring close
Envelope；Left limit bolt (1) is externally threaded, and left limit bolt (1) is threadedly coupled with the internal thread hole on left end cap (2)；
Right limit bolt (13) is externally threaded, and right limit bolt (13) is threadedly coupled with the internal thread hole on right end cap (12)；
Spool (6) left end is externally threaded, and spool (6) left end is threadedly coupled with the internal thread hole on left valve core piston (5)；Spool
(6) right end is externally threaded, and spool (6) right end is threadedly coupled with the internal thread hole on right valve core piston (10)；Spool (6)
It is processed into the round table-like of certain taper at intermediate position；Left valve core piston (5) and left end cap (2) clearance fit, and by close
Seal is sealed, and left valve core piston (5) is by screwed hole of centre to carrying out axially position on the left of spool (6)；Right valve core piston
(10) it with right end cap (12) clearance fit, and is sealed by a seal ring, right valve core piston (10) passes through screwed hole of centre pair
Axially position is carried out on the right side of spool (6)；Bobbin winder bracket (8) and valve body (4) clearance fit, and be sealed by a seal ring, coiling
Left end cap (2) is close in the left side of frame (8), and right end cap (12) is close in the right side of bobbin winder bracket (8)；Processing among bobbin winder bracket (8)
Have a truncated cone-shaped through-hole with taper, bobbin winder bracket (8) external peripheral surface be machined with seal groove C, seal groove G, wire lead slot E, around
Wire casing D and winding slot F；Left magnet exciting coil (7) is wound in bobbin winder bracket (8) wire casing D, and right magnet exciting coil (9) is wrapped in bobbin winder bracket
(8) in winding slot F, lead is drawn via bobbin winder bracket (8) wire lead slot E from the fairlead of valve body (4)；Spool (6) with around
Gap between coil holder (8) constitutes the magnetorheological fluid fluid course with taper；When magnet exciting coil (7) and right magnet exciting coil to the left
(9) when each leading into the electric current in a certain size and direction in, multistage damping clearance can be formed in taper fluid course, between damping
Magnetic direction and magnetorheological fluid flowing direction are substantially vertical in gap, and magnetorheological fluid will flow in damping clearance to be made by shear stress
With；Left resetting spring (3) left end is close to left end cap (2), and left resetting spring (3) right end is close to left valve core piston (5) left end；The right side is multiple
Position spring (11) right end is close to right end cap (12), and right resetting spring (11) left end is close to right valve core piston (10) right end；Left reset
Spring (3) is identical as right resetting spring (11) specifications parameter, and in pre-compressed state when installation, and the two decrement is identical；Valve
It is provided with A mouthfuls of inner thread mouth on the left of body (4), by being attached thereto logical hydraulic pipeline, magnetorheological fluid can flow in or out magnetic from A mouthfuls
Rheology valve insertion；It is provided with B mouthfuls of inner thread mouth on the right side of valve body (4), by being attached thereto logical hydraulic pipeline, magnetorheological fluid can be from B
Mouth flows in or out MR valve inner cavity.When each leading into a certain size in magnet exciting coil (7) and right magnet exciting coil (9) to the left
When same direction current, since the magnetic line of force that electromagnetic induction generates reaches spool (6) through valve body (4), bobbin winder bracket (8), damping clearance, then
Valve body (4) is returned by damping clearance, bobbin winder bracket (8), forms closed circuit；Due to being passed through same direction current, among damping clearance
Position reverse magnetic field, cancels out each other；I and II two sections of taper damping clearances are formed at magnetorheological fluid fluid course at this time.When to the left
When each leading into a certain size reverse current in magnet exciting coil (7) and right magnet exciting coil (9), due to the magnetic of electromagnetic induction generation
The line of force reaches spool (6) through valve body (4), bobbin winder bracket (8), damping clearance, and valve body is returned using damping clearance, bobbin winder bracket (8)
(4), closed circuit is formed；Due to being passed through reverse current, the magnetic direction at damping clearance centre position is identical, plays humidification；
I, II, III 3 section of taper damping clearance is formed at magnetorheological fluid fluid course at this time.Left valve core piston (5), right valve core piston
(10) it is connected through a screw thread with spool (6) and constitutes a piston structure, which can be in axial direction left in valve body (4)
It moves right；Left resetting spring (3) and right resetting spring (11) play automatic centering；When magnetorheological fluid is from when flowing to B mouthfuls for A mouthfuls,
Magnetorheological fluid pushes left valve core piston (5) band movable valve plug (6) to move right, and taper fluid course internal damping gap is caused to become smaller,
Shear stress at damping clearance increases so that inlet and outlet pressure drop also increases；It is magnetorheological when magnetorheological fluid is from when flowing to A mouthfuls for B mouthfuls
Liquid pushes right valve core piston (10) band movable valve plug (6) to be moved to the left, and causes taper fluid course internal damping gap to become larger, between damping
Shear stress at gap becomes smaller so that inlet and outlet pressure drop also becomes smaller；This is realized in the case where not changing exciting current size,
MR valve imports and exports pressure drop and flows to variation with magnetorheological fluid and change automatically.Adjusting the position of left limit bolt (1) can change
Become spool (6) stroke for being moved to the left, to play the damping clearance thickness adjusted when magnetorheological fluid flows to A mouthfuls by B mouthfuls；It adjusts
The position of right limit bolt (13) can change the stroke that spool (6) moves right, and magnetorheological fluid is adjusted by A mouthfuls of streams to play
Damping clearance thickness when to B mouthfuls；In the case where not changing exciting current size, by adjusting left limit bolt (1) or the right side
The position of caging bolt (13) is realized and carries out independent regulation and control to the inlet and outlet pressure drop of MR valve in different liquid flow path directions；When
It adjusts left limit bolt (1) position to right side and is bonded spool (6) left side, adjust right limit bolt (13) position to left side
It is bonded spool (6) right side, left valve core piston (5), right valve core piston (10) and spool (6) stop fortune in the axial direction at this time
Dynamic, left valve core piston (5) and right valve core piston (10) close fluid course, and MR valve is closed.Left limit bolt
(1) left end is provided with pin hole, can be connect with cross like spanner；Right limit bolt (13) right-hand end is provided with pin hole, can be with cross
Spanner connects.
Compared with the background technology, the present invention, it has an advantageous effect in that：
（1）The spool and bobbin winder bracket of MR valve of the present invention use the taper surface structure with certain angle, spool and bobbin winder bracket
Between gap constitute taper fluid course, apart from adjustable, pressure drop is adjusted the tapered gaps formed between spool and bobbin winder bracket
Range is wider, and MR valve working performance is more stable.
（2）MR valve of the present invention is using double magnet exciting coil energisation modes.When each leading into one in magnet exciting coil to the left and right
When determining the same direction current of size, two sections of damping clearances can be formed in taper fluid course；When being passed through in magnet exciting coil to the left and right
When a certain size reverse current, three sections of damping clearances can be formed in taper fluid course.Magnetic direction is equal in damping clearance
It is substantially vertical with magnetorheological fluid flowing direction, by controlling input current size and direction, it can control multiple damping clearance both ends
Between pressure drop, and then control MR valve import and export pressure drop, play the role of multi-stage pressure regulating so that MR valve inlet and outlet pressure
It is big that adjustable extent drops.
（3）For MR valve of the present invention when being passed through magnetorheological fluid, magnetorheological fluid will push valve core piston band movable valve plug to liquid
Direction movement is flowed, this will cause damping clearance thickness to change, to realize under the premise of not changing exciting current size,
MR valve imports and exports pressure drop and flows to variation with magnetorheological fluid and change automatically.
（4）The position that MR valve of the present invention adjusts left limit bolt can change the stroke that spool is moved to the left, to
Play damping clearance thickness when adjusting liquid flow path direction to the left；The position of adjusting right limit bolt can change spool and move right
Stroke, to play adjust liquid flow path direction to the right when damping clearance thickness.In the case where not changing exciting current size,
By adjusting the position of left limit bolt or right limit bolt, realize in different liquid flow path directions to the inlet and outlet pressure of MR valve
The independent regulation and control of drop.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is bobbin winder bracket sectional view of the present invention.
Fig. 3 is right end cap sectional view of the present invention.
Fig. 4 is right end cap left view of the present invention.
Fig. 5 is distribution diagram of magnetic line of force when the present invention leads to same direction current.
Fig. 6 is distribution diagram of magnetic line of force when the present invention leads to reverse current.
Fig. 7 is magnetorheological fluid of the present invention from fluid course schematic diagram when flowing to B mouthfuls for A mouthfuls.
Fig. 8 is magnetorheological fluid of the present invention from fluid course schematic diagram when flowing to A mouthfuls for B mouthfuls.
Fig. 9 is structural schematic diagram when MR valve closing of the present invention is stopped.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 show schematic structural view of the invention.Include mainly：Left limit bolt 1, left end cap 2, left resetting spring 3, valve body 4,
Left valve core piston 5, spool 6, left magnet exciting coil 7, bobbin winder bracket 8, right magnet exciting coil 9, right valve core piston 10, right resetting spring 11,
Right end cap 12 and right limit bolt 13.
Fig. 2 show bobbin winder bracket sectional view of the present invention.Seal groove C, seal groove G, wire lead slot are machined on bobbin winder bracket 8
E, winding slot D and winding slot F.Left magnet exciting coil 7 is wound in the winding slot D of bobbin winder bracket 8, and right magnet exciting coil 9 is wrapped in coiling
In the winding slot F of frame 8, lead is drawn via the wire lead slot E of bobbin winder bracket 8 from the fairlead on valve body 4.
Fig. 3 show right end cap sectional view of the present invention, and Fig. 4 show right end cap left view of the present invention.12 right side of right end cap
5 circular through holes being arranged circumferentially are machined with, corresponding valve body right side 5 threaded hole can play and valve body 4 by screw
The effect of being located by connecting；There are one internal thread through hole for the intermediate processing in 12 right side of right end cap, can be threadedly coupled with right limit bolt 13；It is right
There are one circular through hole, the B oil inlet and outlets on 4 right side of corresponding valve body to play guide functions for the processing of 12 left side central portion of end cap.In order to make magnetic
Rheology liquid energy by MR valve inside, the left side of right end cap 12 is provided with 5 diversion trenches being arranged circumferentially.
Fig. 5 show distribution diagram of magnetic line of force when the present invention leads to same direction current.When magnet exciting coil 7 and right magnet exciting coil 9 to the left
In when each leading into a certain size same direction current, the magnetic line of force generated due to electromagnetic induction is through between valve body 4, bobbin winder bracket 8, damping
Gap reaches spool 6, returns to valve body 4 using damping clearance, bobbin winder bracket 8, forms closed circuit.Due to being passed through same direction current, hinder
Position reverse magnetic field, cancels out each other among Buddhist nun gap.I and II gap between bobbin winder bracket 8 and spool 6 is formed in figure two sections
Taper damping clearance.
Fig. 6 show distribution diagram of magnetic line of force when the present invention leads to reverse current.When magnet exciting coil 7 and right magnet exciting coil 9 to the left
In when each leading into a certain size reverse current, the magnetic line of force generated due to electromagnetic induction is through between valve body 4, bobbin winder bracket 8, damping
Gap reaches spool 6, returns to valve body 4 using damping clearance, bobbin winder bracket 8, forms closed circuit.Due to being passed through reverse current, hinder
The magnetic direction at position is identical among Buddhist nun gap, plays humidification.I, II, III gap between bobbin winder bracket 8 and spool 6 in figure
The three sections of taper damping clearances formed.
Fig. 7 show magnetorheological fluid of the present invention from fluid course schematic diagram when flowing to B mouthfuls for A mouthfuls.When magnetorheological fluid is flowed from A mouthfuls
When to B mouthfuls, magnetorheological fluid will push left valve core piston 5 to move right with movable valve plug 6, until it is bonded 13 left end of right limit bolt
Face, at this time taper fluid course internal damping gap become smaller, formed figure in fluid course I.
Fig. 8 show magnetorheological fluid of the present invention from fluid course schematic diagram when flowing to A mouthfuls for B mouthfuls.When magnetorheological fluid is flowed from B mouthfuls
When to A mouthfuls, magnetorheological fluid pushes right valve core piston 10 to be moved to the left with movable valve plug 6, until it is bonded 1 right end of left limit bolt
Face, at this time taper fluid course internal damping gap become larger, formed figure in fluid course II.
Fig. 9 show structural schematic diagram when MR valve closing of the present invention is stopped.Adjust 1, left limit bolt
It sets, makes its right side 6 left side of fitting spool；13 position of right limit bolt is adjusted, its left side 6 right side of fitting spool is made；
Left valve core piston 5, right valve core piston 10 and the stop motion in the axial direction of spool 6, left valve core piston 5 and right valve core piston at this time
10 close fluid course, and MR valve is closed.
Working principle of the invention is as follows：
As shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, spool 6 and bobbin winder bracket 8 are using the taper surface structure with certain angle, valve
Gap between core 6 and bobbin winder bracket 8 constitutes taper fluid course.It is each led into when in magnet exciting coil 7 and right magnet exciting coil 9 to the left
When the electric current in a certain size and direction, understands and form multistage damping clearance in taper fluid course, magnetic direction in damping clearance
Substantially vertical with magnetorheological fluid flowing direction, magnetorheological fluid flows in damping clearance will be by shear stress.Left spool is lived
Plug 5, right valve core piston 10 are connected through a screw thread with spool 6 constitutes a piston structure, left resetting spring 3 and right resetting spring 11
Play automatic centering.When magnetorheological fluid is from when flowing to B mouthfuls for A mouthfuls, magnetorheological fluid push left valve core piston 5 with movable valve plug 6 to the right
It is mobile, cause taper fluid course internal damping gap to become smaller, the shear stress under reverse current at damping clearance increases so that into
Exit pressure drop also increases；When magnetorheological fluid is from when flowing to A mouthfuls for B mouthfuls, magnetorheological fluid push right valve core piston 10 with movable valve plug 6 to the left
It is mobile, cause taper fluid course internal damping gap to become larger, the shear stress under same direction current becomes smaller so that inlet and outlet pressure drop
Become smaller.This is realized in the case where not changing exciting current size, and MR valve, which is imported and exported pressure drop and flowed to magnetorheological fluid, to be become
Change and changes automatically.In addition, the stroke that spool 6 is moved to the left can be changed by adjusting the position of left limit bolt 1, adjusted to play
Damping clearance thickness when section magnetorheological fluid flows to A mouthfuls by B mouthfuls；Adjust right limit bolt 13 position can change spool 6 to
The stroke moved right, to play the damping clearance thickness adjusted when magnetorheological fluid flows to B mouthfuls by A mouthfuls.Do not changing excitation electricity
In the case of flowing size, by adjusting the position of left limit bolt 1 or right limit bolt 13, realize in different liquid flow path directions pair
The inlet and outlet pressure drop of MR valve carries out independent regulation and control.It is bonded 6 left end of spool when adjusting 1 position of left limit bolt to right side
Face adjusts 13 position to left side 6 right side of fitting spool of right limit bolt, at this time left valve core piston 5, right valve core piston 10 with
The stop motion in the axial direction of spool 6, left valve core piston 5 and right valve core piston 10 close fluid course, and MR valve, which is in, to close
Closed state.
Claims (6)
1. the twin coil MR valve that a kind of damping clearance is automatically adjusted with liquid flow path direction, it is characterised in that including：Left limit spiral shell
Bolt (1), left end cap (2), left resetting spring (3), valve body (4), left valve core piston (5), spool (6), left magnet exciting coil (7), around
Coil holder (8), right magnet exciting coil (9), right valve core piston (10), right resetting spring (11), right end cap (12) and right limit bolt
(13)；Left end cap (2) is fixedly connected with valve body (4) by screw；Left end cap (2) coordinates with valve body (4) transition, and passes through sealing
Circle is sealed；Right end cap (12) is fixedly connected with valve body (4) by screw；Right end cap (12) coordinates with valve body (4) transition, and
It is sealed by a seal ring；Left limit bolt (1) is externally threaded, left limit bolt (1) and the internal thread on left end cap (2)
Hole is threadedly coupled；Right limit bolt (13) is externally threaded, right limit bolt (13) and the internal thread on right end cap (12)
Hole is threadedly coupled；Spool (6) left end is externally threaded, the internal thread hole on spool (6) left end and left valve core piston (5) into
Row is threadedly coupled；Spool (6) right end is externally threaded, and spool (6) right end is carried out with the internal thread hole on right valve core piston (10)
It is threadedly coupled；It is processed into the round table-like of certain taper at the intermediate position of spool (6)；Between left valve core piston (5) and left end cap (2)
Gap coordinates, and is sealed by a seal ring, and left valve core piston (5) is axial to being carried out on the left of spool (6) by screwed hole of centre
Positioning；Right valve core piston (10) and right end cap (12) clearance fit, and be sealed by a seal ring, right valve core piston (10) is logical
Screwed hole of centre is crossed to carrying out axially position on the right side of spool (6)；Bobbin winder bracket (8) and valve body (4) clearance fit, and pass through sealing ring
It is sealed, left end cap (2) is close in the left side of bobbin winder bracket (8), and right end cap (12) is close in the right side of bobbin winder bracket (8)；Coiling
It is machined with the truncated cone-shaped through-hole with taper among frame (8), bobbin winder bracket (8) external peripheral surface is machined with seal groove C, seal groove
G, wire lead slot E, winding slot D and winding slot F；Left magnet exciting coil (7) is wound in bobbin winder bracket (8) wire casing D, right magnet exciting coil (9)
It is wrapped in the winding slot F of bobbin winder bracket (8), lead is drawn via bobbin winder bracket (8) wire lead slot E from the fairlead of valve body (4)；
Gap between spool (6) and bobbin winder bracket (8) constitutes the magnetorheological fluid fluid course with taper；When magnet exciting coil (7) to the left and
When each leading into the electric current in a certain size and direction in right magnet exciting coil (9), multistage damping can be formed in taper fluid course
Gap, magnetic direction and magnetorheological fluid flowing direction are substantially vertical in damping clearance, and magnetorheological fluid flow general in damping clearance
By shear stress；Left resetting spring (3) left end is close to left end cap (2), and left resetting spring (3) right end is close to left valve core piston
(5) left end；Right resetting spring (11) right end is close to right end cap (12), and right resetting spring (11) left end is close to right valve core piston (10)
Right end；Left resetting spring (3) is identical as right resetting spring (11) specifications parameter, in pre-compressed state when installation, and the two pressure
Contracting amount is identical；It is provided with A mouthfuls of inner thread mouth on the left of valve body (4), by being attached thereto logical hydraulic pipeline, magnetorheological fluid can be from A mouthfuls
Flow in or out MR valve inner cavity；It is provided with B mouthfuls of inner thread mouth on the right side of valve body (4), by being attached thereto logical hydraulic pipeline, magnetic
Rheology liquid can flow in or out MR valve inner cavity from B mouthfuls.
2. the twin coil MR valve that a kind of damping clearance according to claim 1 is automatically adjusted with liquid flow path direction, special
Sign is：When each leading into a certain size same direction current in magnet exciting coil (7) and right magnet exciting coil (9) to the left, due to electricity
The magnetic line of force that magnetic induction generates reaches spool (6) through valve body (4), bobbin winder bracket (8), damping clearance, using damping clearance, coiling
Frame (8) returns to valve body (4), forms closed circuit；Due to being passed through same direction current, position reverse magnetic field among damping clearance, mutually
It offsets；I and II two sections of taper damping clearances are formed at magnetorheological fluid fluid course at this time.
3. the twin coil MR valve that a kind of damping clearance according to claim 1 is automatically adjusted with liquid flow path direction, special
Sign is：When each leading into a certain size reverse current in magnet exciting coil (7) and right magnet exciting coil (9) to the left, due to electricity
The magnetic line of force that magnetic induction generates reaches spool (6) through valve body (4), bobbin winder bracket (8), damping clearance, using damping clearance, coiling
Frame (8) returns to valve body (4), forms closed circuit；Due to being passed through reverse current, the magnetic direction phase at damping clearance centre position
Together, humidification is played；I, II, III 3 section of taper damping clearance is formed at magnetorheological fluid fluid course at this time.
4. the twin coil MR valve that a kind of damping clearance according to claim 1 is automatically adjusted with liquid flow path direction, special
Sign is：Left valve core piston (5), right valve core piston (10) are connected through a screw thread with spool (6) constitutes a piston structure, the work
Plug structure can in axial direction move left and right in valve body (4)；Left resetting spring (3) and right resetting spring (11) play automatic centering
Effect；When magnetorheological fluid is from when flowing to B mouthfuls for A mouthfuls, magnetorheological fluid pushes left valve core piston (5) band movable valve plug (6) to move right, and leads
Taper fluid course internal damping gap is caused to become smaller, the shear stress at damping clearance increases so that inlet and outlet pressure drop also increases；When
For magnetorheological fluid from when flowing to A mouthfuls for B mouthfuls, magnetorheological fluid pushes right valve core piston (10) band movable valve plug (6) to be moved to the left, and leads to taper
Fluid course internal damping gap becomes larger, and the shear stress at damping clearance becomes smaller so that inlet and outlet pressure drop also becomes smaller；This is realized
In the case where not changing exciting current size, MR valve imports and exports pressure drop and flows to variation with magnetorheological fluid and change automatically.
5. the twin coil MR valve that a kind of damping clearance according to claim 1 is automatically adjusted with liquid flow path direction, special
Sign is：The stroke that spool (6) is moved to the left can be changed by adjusting the position of left limit bolt (1), to play adjusting magnetic current
Become damping clearance thickness when liquid flows to A mouthfuls by B mouthfuls；Spool (6) can be changed to the right by adjusting the position of right limit bolt (13)
Mobile stroke, to play the damping clearance thickness adjusted when magnetorheological fluid flows to B mouthfuls by A mouthfuls；Do not changing exciting current
In the case of size, by adjusting the position of left limit bolt (1) or right limit bolt (13), realize in different liquid flow path directions
Independent regulation and control are carried out to the inlet and outlet pressure drop of MR valve；It is bonded spool (6) when adjusting left limit bolt (1) position to right side
Left side adjusts right limit bolt (13) position to left side and is bonded spool (6) right side, at this time left valve core piston (5), right valve
It is logical that core piston (10) and spool (6) stop motion in the axial direction, left valve core piston (5) and right valve core piston (10) close liquid stream
Road, MR valve are closed.
6. the twin coil MR valve that a kind of damping clearance according to claim 1 is automatically adjusted with liquid flow path direction, special
Sign is：Left limit bolt (1) left end is provided with pin hole, can be connect with cross like spanner；Right limit bolt (13) right-hand end
It is provided with pin hole, can be connect with cross like spanner.
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| CN201810908702.8A CN108757620B (en) | 2018-08-10 | 2018-08-10 | Double-coil magnetorheological valve with damping gap automatically adjusted along with liquid flow direction |
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| CN201810908702.8A CN108757620B (en) | 2018-08-10 | 2018-08-10 | Double-coil magnetorheological valve with damping gap automatically adjusted along with liquid flow direction |
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| CN108757620B CN108757620B (en) | 2023-06-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109893726A (en) * | 2019-03-12 | 2019-06-18 | 广东斐瑞智能技术有限公司 | It is capable of the clean skin device and aesthetic nursing machine of adjust automatically liquid inlet volume |
| CN110220002A (en) * | 2019-06-19 | 2019-09-10 | 宁波兴茂电子科技有限公司 | A kind of energy-saving electromagnetic valve |
| CN111350712A (en) * | 2020-03-20 | 2020-06-30 | 中国矿业大学 | Magnetorheological valve with adjustable radial damping clearance |
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| CN108757620B (en) | 2023-06-20 |
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