CN208518995U - A kind of unicoil MR valve that damping clearance is automatically adjusted with liquid flow path direction - Google Patents
A kind of unicoil MR valve that damping clearance is automatically adjusted with liquid flow path direction Download PDFInfo
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- CN208518995U CN208518995U CN201821287664.0U CN201821287664U CN208518995U CN 208518995 U CN208518995 U CN 208518995U CN 201821287664 U CN201821287664 U CN 201821287664U CN 208518995 U CN208518995 U CN 208518995U
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- valve
- end cap
- core piston
- spool
- valve core
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Abstract
The utility model discloses the unicoil MR valves that a kind of damping clearance is automatically adjusted with liquid flow path direction, are mainly made of end cap, valve body, spool, caging bolt, valve core piston, reset spring, magnet exciting coil and bobbin winder bracket etc..Gap between bobbin winder bracket and valve body constitutes taper fluid course, forms two sections of damping clearances 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 damping clearance becomes smaller in taper fluid course, 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 damping clearance becomes larger in taper fluid course, and valve inlet and outlet pressure drop becomes smaller.In the case where not changing exciting current size cases, the utility model MR valve can realize that valve inlet and outlet pressure drop flows to variation with magnetorheological fluid and changes automatically, especially suitable for requiring the lesser valve-controlled cylinder system of circuit pressure.
Description
Technical field
The utility model relates to the lists that a kind of MR valve more particularly to a kind of damping clearance are automatically adjusted with liquid flow path direction
Coil MR valve.
Background technique
MR valve is a kind of novel hydraulic control valve using magnetorheological fluid as working media.Magnetorheological fluid is that one kind has
The SMART FLUID of magnetic rheology effect can be with centainly cutting from the Newtonian fluid umklappen of free-flowing under magnetic fields
Cut the visco-plastic body of yield strength；Remove behind magnetic field and can revert to the Newtonian fluid of free-flowing.The inlet and outlet of MR valve
Pressure drop can be controlled by controlling impressed current size, and the principal element for influencing pressure drop control and regulation is damping clearance part
Thickness and effective length.
Compared with conventional hydraulic control valve, MR valve is simple with structure, it is small to move reliable, fast response time, noise,
Energy consumption is small, the operation is stable, and the advantages that be conducive to the realization of intelligent control, has good future in engineering applications.In engineer application,
It often needs magnetorheological fluid that not there is different pressure drops simultaneously in flow direction, two ways is usually taken and is realized: first is that using control
Device processed monitors liquid flow movement direction, when liquid stream is reversed, changes the size of exciting current in MR valve, and control system is complicated,
And frequently changes electric current and will lead to MR valve temperature rise aggravation；Second is that the bypass hydraulic valve in parallel on MR valve, but this knot
Structure design occupied space is big, and poor controllability.
Based on this, the utility model proposes the unicoil MR valve that a kind of damping clearance is automatically adjusted with liquid flow path direction,
It can realize that damping clearance is automatically adjusted with liquid flow path direction, and then realize in the case where not changing field coil current size
It imports and exports pressure drop and flows to automatic variation with magnetorheological fluid.
Summary of the invention
In order to solve the problems, such as background technique and meet requirement of the MR valve in engineer application, this is practical new
Type proposes a kind of unicoil MR valve that damping clearance is automatically adjusted with liquid flow path direction.The spool of the MR valve and coiling
Frame uses the tapered surface structure with certain angle, and gap between spool and bobbin winder bracket constitutes taper fluid course, when to encouraging
When being passed through the electric current in a certain size and direction in magnetic coil, two sections of damping clearances can be formed in taper fluid course, between damping
Magnetic direction and magnetorheological fluid flowing direction are substantially vertical in gap, and magnetorheological fluid flows in damping clearance under magnetic fields incites somebody to action
By shear stress.Left and right valve core piston, which be threadedly coupled with spool, constitutes a piston structure, and reset spring plays it
Automatic centering effect.When being passed through magnetorheological fluid into the MR valve, magnetorheological fluid will push valve core piston band movable valve plug to
Liquid flow path direction is mobile, this will lead to damping clearance thickness and changes, to realize the case where not changing exciting current size
Under, MR valve imports and exports pressure drop and flows to variation with magnetorheological fluid and change automatically.In addition, the position for adjusting left limit bolt can
To change 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
The position of bolt can change the stroke that spool moves right, so that the damping clearance played when adjusting liquid flow path direction to the right is thick
Degree.It, by adjusting the position of left limit bolt or right limit bolt, can be realized in the case where not changing exciting current size
Independent regulation is carried out to the inlet and outlet pressure drop of MR valve when different liquid flow path directions.
The utility model solve technical solution used by its technical problem include: left limit bolt (1), left end cap (2),
Left reset spring (3), left valve core piston (4), spool (5), bobbin winder bracket (6), magnet exciting coil (7), valve body (8), right valve core piston
(9), right reset spring (10), right end cap (11), right limit bolt (12)；Left end cap (2) and valve body (8) connect by the way that screw is fixed
It connects；Left end cap (2) and valve body (8) transition fit, and be sealed by a seal ring；Right end cap (11) and valve body (8) pass through spiral shell
Nail is fixedly connected；Right end cap (11) and valve body (8) transition fit, and be sealed by a seal ring；Left limit bolt (1) is tapped with
External screw thread, left limit bolt (1) are threadedly coupled with the internal thread hole on left end cap (2)；Right limit bolt (12) is tapped with outer
Screw thread, right limit bolt (12) are threadedly coupled with the internal thread hole on right end cap (11)；Spool (5) left end is tapped with outer spiral shell
Line, spool (5) left end are threadedly coupled with the internal thread hole on left valve core piston (4), and spool (5) right end is externally threaded,
Spool (5) right end is threadedly coupled with the internal thread hole on right valve core piston (9)；The intermediate position of spool (5), which is processed into, to be had
Certain taper it is round table-like；Left valve core piston (4) and left end cap (2) clearance fit, and be sealed by a seal ring；Left spool
Piston (4) is by screwed hole of centre to progress axially position on the left of spool (5)；Right valve core piston (9) and right end cap (11) gap
Cooperation, and be sealed by a seal ring；Right valve core piston (9) is axial fixed to carrying out on the right side of spool (5) by screwed hole of centre
Position；Bobbin winder bracket (6) and valve body (8) clearance fit, and be sealed by a seal ring；It is close to left end cap in bobbin winder bracket (6) left side
(2) right end cap (11) left side is close in right side, bobbin winder bracket (6) right side；The rotary table with taper is machined among bobbin winder bracket (6)
Shape through-hole；Bobbin winder bracket (6) external peripheral surface is machined with seal groove C, seal groove E and winding slot D；Magnet exciting coil (7) winding
In the winding slot D of bobbin winder bracket (6), the fairlead that lead passes through on valve body (8) is drawn from MR valve；Spool (5) with
Gap between bobbin winder bracket (6) forms the magnetorheological fluid fluid course of taper；Left end cap (2) are close in left reset spring (3) left end,
Its right end is close to left valve core piston (4) left end；Right reset spring (10) right end is close to right end cap (11), and right spool is close in left end
Piston (9) right end；A mouthfuls of inner thread mouth are provided on the left of valve body (8), by being attached thereto logical hydraulic pipeline, magnetorheological fluid can be from A
Mouth flows in or out MR valve inner cavity；B mouthfuls of inner thread mouth are provided on the right side of valve body (8), by being attached thereto logical hydraulic pipeline,
Magnetorheological fluid can flow in or out MR valve inner cavity from B mouthfuls.Left limit bolt (1) left end is provided with pin hole, can be with cross
Spanner connection；Right limit bolt (12) right-hand end is provided with pin hole, can connect with cross like spanner.Left reset spring (3) and the right side are multiple
Position spring (10) specifications parameter is identical, pre-compressed state is in when installation, and the two decrement is identical.Left valve core piston (4), the right side
Valve core piston (9) and spool (5), which are connected through a screw thread, constitutes a piston structure, and piston structure can be in valve body (8) along axial direction
Direction moves left and right.
The utility model compared with the background art, has the beneficial effect that
(1) spool of the utility model MR valve and bobbin winder bracket use the tapered surface structure with certain angle, spool
Gap between bobbin winder bracket constitutes taper fluid course, the tapered gaps formed between spool and bobbin winder bracket apart from adjustable,
Pressure drop adjustable range is wider, and MR valve working performance is higher.
(2) for the utility model MR valve when being passed through magnetorheological fluid, magnetorheological fluid will push valve core piston band movable valve plug
Mobile to liquid flow path direction, this will lead to damping clearance thickness and changes, and not change exciting current size to realize
In the case of, MR valve imports and exports pressure drop and flows to variation with magnetorheological fluid and change automatically.
(3) compared with conventional unicoil circular ring type damping clearance MR valve, the utility model MR valve using
Unicoil taper damping clearance can form two sections of effective damping gaps, and the thickness of MR valve damping clearance and spool are to the left
Or the proportional relationship of displacement to move right.
(4) position that the utility model MR valve 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 for adjusting right limit bolt can change spool to the right
Mobile stroke, to play damping clearance thickness when adjusting liquid flow path direction to the right.Exciting current size can not changed
In the case of, by adjusting the position of left limit bolt or right limit bolt, realize in different liquid flow path directions to MR valve
It imports and exports pressure drop and carries out independent regulation.
Detailed description of the invention
Fig. 1 is the utility model structure diagram.
Fig. 2 is the utility model bobbin winder bracket cross-sectional view.
Fig. 3 is the utility model right end cap cross-sectional view.
Fig. 4 is the utility model right end cap left view.
Fig. 5 is the utility model valve core structure schematic diagram.
Fig. 6 is the utility model distribution diagram of magnetic line of force.
Fig. 7 is the utility model magnetorheological fluid from fluid course schematic diagram when flowing to B mouthfuls for A mouthfuls.
Fig. 8 is the utility model magnetorheological fluid from fluid course schematic diagram when flowing to A mouthfuls for B mouthfuls.
Fig. 9 is structural schematic diagram when the closing of the utility model MR valve stops working.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples:
Fig. 1 show the utility model structure diagram.Specifically include that left limit bolt 1, left end cap 2, left reset spring
3, left valve core piston 4, spool 5, bobbin winder bracket 6, magnet exciting coil 7, valve body 8, right valve core piston 9, right reset spring 10, right end cap 11
And right limit bolt 12.
Fig. 2 show the utility model bobbin winder bracket cross-sectional view.Be machined on bobbin winder bracket 6 seal groove C, seal groove E and
Winding slot D, magnet exciting coil 7 are wound in the winding slot D of bobbin winder bracket 6, and lead passes through the fairlead on valve body 8 from MR valve
Middle extraction.
Fig. 3 show the utility model right end cap cross-sectional view, and Fig. 4 show the utility model right end cap left view.Right end
5 circular through holes being arranged circumferentially are machined on the right side of lid 11, corresponding valve body 8 right side 5 threaded hole can rise by screw
To with the valve body effect of being located by connecting；11 right side of right end cap is intermediate to be machined with an internal thread through hole, can be with 12 spiral shell of right limit bolt
Line connection；11 left side central portion of right end cap is machined with a circular through hole, and it is left to play water conservancy diversion for the B oil inlet and outlet on corresponding 8 right side of valve body
It is right；For enable magnetorheological fluid by MR valve inside, 5 diversion trenches being arranged circumferentially are provided on the left of right end cap 11.
Fig. 5 show the utility model valve core structure schematic diagram.5 left and right ends of spool are externally threaded, centre work
Position is designed to round table-like.
Fig. 6 show the utility model distribution diagram of magnetic line of force.When importing a certain size electric current into magnet exciting coil 7,
Since the magnetic line of force that electromagnetic induction generates reaches spool 5 through valve body 8, bobbin winder bracket 6, damping clearance, using damping clearance, coiling
Frame 6 returns to valve body 8, forms closed circuit.Two sections of tapers resistance that I and II gap between bobbin winder bracket 6 and spool 5 is formed in figure
Buddhist nun gap.
Fig. 7 show the utility model magnetorheological fluid from fluid course schematic diagram when flowing to B mouthfuls for A mouthfuls.When magnetorheological fluid is from A
When mouth flows to B mouthfuls, magnetorheological fluid will push left valve core piston 4 to move right with movable valve plug 5, until it is bonded right limit bolt 12
Left side, damping clearance becomes smaller in taper fluid course at this time, forms the fluid course I in figure.
Fig. 8 show the utility model magnetorheological fluid from fluid course schematic diagram when flowing to A mouthfuls for B mouthfuls.When magnetorheological fluid is from B
When mouth flows to A mouthfuls, magnetorheological fluid pushes right valve core piston 9 to be moved to the left with movable valve plug 5, until it is bonded 1 right side of left limit bolt
End face, damping clearance becomes larger in taper fluid course at this time, forms the fluid course II in figure.
Fig. 9 show the structural schematic diagram when closing of the utility model MR valve stops working.Adjust left limit bolt 1
Position makes its right side be bonded 5 left side of spool；12 position of right limit bolt is adjusted, its left side is made to be bonded 5 right end of spool
Face；Left valve core piston 4, right valve core piston 9 and the stop motion in the axial direction of spool 5 at this time, left valve core piston 4 and right spool are living
Plug 9 closes fluid course, and MR valve is in close state.
Utility model works principle is as follows:
As shown in Fig. 6, Fig. 7, Fig. 8 and Fig. 9, spool 5 and bobbin winder bracket 6 are using the tapered surface structure with certain angle, valve
Gap between core 5 and bobbin winder bracket 6 constitutes taper fluid course.When the electricity for being passed through a certain size and direction into magnet exciting coil 7
When stream, I and II two sections of damping clearances can be formed in taper fluid course, magnetic direction and magnetorheological fluid flow in damping clearance
Direction is substantially vertical, and flow in damping clearance will be by shear stress for magnetorheological fluid under magnetic fields.Left valve core piston
4, right valve core piston 9 is connected through a screw thread with spool 5 constitutes a piston structure, and left reset spring 3 and right reset spring 10 rise
Automatic centering effect.When magnetorheological fluid is from when flowing to B mouthfuls for A mouthfuls, magnetorheological fluid pushes left valve core piston 4 to move right with movable valve plug 5
It is dynamic, cause damping clearance in taper fluid course to become smaller, it is larger that magnetorheological fluid flows suffered damping force so that inlet and outlet pressure drop compared with
Greatly；When magnetorheological fluid is from when flowing to A mouthfuls for B mouthfuls, magnetorheological fluid pushes right valve core piston 9 to be moved to the left with movable valve plug 5, leads to taper
Damping clearance becomes larger in fluid course, and it is smaller that magnetorheological fluid flows suffered damping force, so that inlet and outlet pressure drop is 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.
In addition, the position for adjusting left limit bolt 1 can change the stroke that spool 5 is moved to the left, magnetorheological fluid is adjusted by B to play
Mouth flows to damping clearance thickness at A mouthfuls；The position for adjusting right limit bolt 12 can change the stroke that spool 5 moves right,
To play the damping clearance thickness adjusted when magnetorheological fluid flows to B mouthfuls by A mouthfuls.This can be in the feelings for not changing exciting current size
Under condition, by adjusting the position of left limit bolt 1 or right limit bolt 12, realize in different liquid flow path directions to MR valve
It imports and exports pressure drop and carries out independent regulation.
1 position of left limit bolt is adjusted, its right side is made to be bonded 5 left side of spool；12 position of right limit bolt is adjusted, is made
Its left side is bonded 5 right side of spool；Left valve core piston 4, right valve core piston 9 and the stop motion in the axial direction of spool 5 at this time,
Left valve core piston 4 and right valve core piston 9 close fluid course, and MR valve is in close state.
Claims (4)
1. the unicoil MR valve that a kind of damping clearance is automatically adjusted with liquid flow path direction, characterized by comprising: left limit spiral shell
Bolt (1), left end cap (2), left reset spring (3), left valve core piston (4), spool (5), bobbin winder bracket (6), magnet exciting coil (7), valve
Body (8), right valve core piston (9), right reset spring (10), right end cap (11), right limit bolt (12)；Left end cap (2) and valve body
(8) it is fixedly connected by screw；Left end cap (2) and valve body (8) transition fit, and be sealed by a seal ring；Right end cap
(11) it is fixedly connected with valve body (8) by screw；Right end cap (11) and valve body (8) transition fit, and 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 (12) is externally threaded, and right limit bolt (12) is threadedly coupled with the internal thread hole on right end cap (11)；
Spool (5) left end is externally threaded, and spool (5) left end is threadedly coupled with the internal thread hole on left valve core piston (4), spool
(5) right end is externally threaded, and spool (5) right end is threadedly coupled with the internal thread hole on right valve core piston (9)；Spool (5)
It is processed into the round table-like of certain taper at intermediate position；Left valve core piston (4) and left end cap (2) clearance fit, and by close
Seal is sealed；Left valve core piston (4) is by screwed hole of centre to progress axially position on the left of spool (5)；Right valve core piston
(9) it with right end cap (11) clearance fit, and is sealed by a seal ring；Right valve core piston (9) is by screwed hole of centre to valve
Axially position is carried out on the right side of core (5)；Bobbin winder bracket (6) and valve body (8) clearance fit, and be sealed by a seal ring；Bobbin winder bracket
(6) left end cap (2) right side is close in left side, and right end cap (11) left side is close in bobbin winder bracket (6) right side；In bobbin winder bracket (6)
Between be machined with the truncated cone-shaped through-hole with taper；Bobbin winder bracket (6) external peripheral surface is machined with seal groove C, seal groove E and coiling
Slot D；Magnet exciting coil (7) is wound in the winding slot D of bobbin winder bracket (6), and lead passes through the fairlead on valve body (8) from magnetorheological
It is drawn in valve；Gap between spool (5) and bobbin winder bracket (6) forms the magnetorheological fluid fluid course of taper；Left reset spring (3)
Left end cap (2) are close in left end, and right end is close to left valve core piston (4) left end；Right reset spring (10) right end is close to right end cap
(11), right valve core piston (9) right end is close in left end；It is provided with A mouthfuls of inner thread mouth on the left of valve body (8), it is logical by being attached thereto
Hydraulic pipeline, magnetorheological fluid can flow in or out MR valve inner cavity from A mouthfuls；B mouthfuls of inner thread mouth are provided on the right side of valve body (8), is led to
It crosses and is attached thereto logical hydraulic pipeline, magnetorheological fluid can flow in or out MR valve inner cavity from B mouthfuls.
2. the unicoil 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 connect with cross like spanner；Right limit bolt (12) right-hand end
It is provided with pin hole, can be connect with cross like spanner.
3. the unicoil MR valve that a kind of damping clearance according to claim 1 is automatically adjusted with liquid flow path direction, special
Sign is: left reset spring (3) is identical as right reset spring (10) specifications parameter, and pre-compressed state, and the two are in when installation
Decrement is identical.
4. the unicoil 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 (4), right valve core piston (9) and spool (5) are connected through a screw thread and constitute a piston structure, piston
Structure can in axial direction move left and right in valve body (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821287664.0U CN208518995U (en) | 2018-08-10 | 2018-08-10 | A kind of unicoil MR valve that damping clearance is automatically adjusted with liquid flow path direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821287664.0U CN208518995U (en) | 2018-08-10 | 2018-08-10 | A kind of unicoil MR valve that damping clearance is automatically adjusted with liquid flow path direction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208518995U true CN208518995U (en) | 2019-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821287664.0U Expired - Fee Related CN208518995U (en) | 2018-08-10 | 2018-08-10 | A kind of unicoil MR valve that damping clearance is automatically adjusted with liquid flow path direction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208518995U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022555A (en) * | 2019-12-23 | 2020-04-17 | 哈工大机电工程(嘉善)研究院 | Novel high-speed impact magneto-rheological damper with adjustable damping channel gap |
| CN113007425A (en) * | 2021-03-31 | 2021-06-22 | 重庆大学 | Magneto-rheological semi-active and active integrated flow valve based on electromagnetic adjustment |
-
2018
- 2018-08-10 CN CN201821287664.0U patent/CN208518995U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022555A (en) * | 2019-12-23 | 2020-04-17 | 哈工大机电工程(嘉善)研究院 | Novel high-speed impact magneto-rheological damper with adjustable damping channel gap |
| CN111022555B (en) * | 2019-12-23 | 2021-03-02 | 哈工大机电工程(嘉善)研究院 | Novel high-speed impact magneto-rheological damper with adjustable damping channel gap |
| CN113007425A (en) * | 2021-03-31 | 2021-06-22 | 重庆大学 | Magneto-rheological semi-active and active integrated flow valve based on electromagnetic adjustment |
| CN113007425B (en) * | 2021-03-31 | 2022-11-15 | 重庆大学 | Magneto-rheological semi-active and active integrated flow valve based on electromagnetic adjustment |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190219 Termination date: 20190810 |