CN106122145A - A kind of microminiature 2D electromagnetic switch valve of spring reset - Google Patents
A kind of microminiature 2D electromagnetic switch valve of spring reset Download PDFInfo
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- CN106122145A CN106122145A CN201610570373.1A CN201610570373A CN106122145A CN 106122145 A CN106122145 A CN 106122145A CN 201610570373 A CN201610570373 A CN 201610570373A CN 106122145 A CN106122145 A CN 106122145A
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- Prior art keywords
- spool
- low pressure
- oil
- driving lever
- rectangle frame
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Classifications
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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
Abstract
The microminiature 2D electromagnetic switch valve of a kind of spring reset, oil suction chamber connects with oil-in, and oil-out is positioned on the movement locus of the second shoulder；One end of passage connects with low pressure chamber, and the other end connects with the low pressure hole in first shoulder；Sensitive cavity can pass through straight trough, high-pressure trough connects with oil suction chamber；Sensitive cavity can pass through straight trough, low pressure hole, passage, low pressure chamber connect with oil return opening；The left end fixed cover of rectangle frame is located on spool, and the central shaft of rectangle frame right-hand member sequentially passes through support and connecting plate, and the right-hand member of spool is airtight through rectangle frame, is compressed with back-moving spring between spool and spring base；The right side of spring base is pushed against on the steel ball on a bracer, the both sides propping up bracer through rectangle frame and are fixed on support, mechanical transmission mechanism includes directly on top upper driving lever and lower shift fork located directly below, and one end of horizon bar is arranged with driving lever back-moving spring.
Description
Technical field
The present invention relates to a kind of switch valve, particularly relate to the microminiature 2D electromagnetic switch valve of a kind of spring reset.
Background technology
In recent years, the two-dimentional electro hydraulic on-off valve utilizing servo screw mechanism principle to work has spool radial rotating with axial
The double freedom of movement, control are flexibly, precision is high, frequency response is fast, low-hysteresis, leakage rate are little, advantages of simple structure and simple, currently mainly
It is used in Aero-Space, the military field such as guided missile and mostly being under extreme environment.
But, existing two dimension (2D) hydraulic valve all uses the concentric structure of two-stage to ensure that spool is subject to enough drivings
Power, this also causes two dimension (2D) hydraulic valve of this structure to be difficulty with miniaturization.
The requirement little to its light weight and volume in order to meet airborne equipment, Hydraulic Elements still have during miniaturization
Following problem fails to solve: 1, the miniaturization of electro hydraulic on-off valve will certainly reduce the size of electromechanical converter, thus causes driving
The problem that power/forces square is not enough；2, the miniaturization of electro hydraulic on-off valve will certainly cause valve core reseting spring to diminish, thus causes back
Multiple hypodynamic problem；3, former 2d valve has when spool, valve body, concentric ring installation the requirement that two-stage is concentric, causes it is processed
Required precision is high, it is difficult to the problem that processing realizes.
Summary of the invention
In order to overcome hydraulic valve miniaturization to cause, electromechanical converter driving force is not enough, back-moving spring restoring force is little
Problem, and can meet that airborne equipment is strong to hydraulic component capacity of resisting disturbance, light weight, volume are little, respond fast demand, this
The airborne microminiature two dimension electro hydraulic on-off valve of a kind of spring reset of bright offer.
The technical scheme is that
The microminiature 2D electromagnetic switch valve of a kind of spring reset, including being positioned at the valve body in left side and being positioned at the connection on right side
Plate, drives the mechanical transmission mechanism of valve core rotation to be arranged on connecting plate；Valve body and connecting plate are coaxially connected by support, support
One end be fixed in the groove in valve body, the other end is fixed in connecting plate；
Spool is rotatably arranged in valve body, and spool is sequentially provided with first shoulder and the second shoulder, valve body from left to right
Left end cap become sensitive cavity, first shoulder and the second shoulder that body cavity is airtight airtight for body cavity enclosure with first shoulder
Enclosure cyclization is around the annular oil suction chamber of spool, and oil suction chamber connects with oil-in；Described valve body is provided with oil-out, and oil-out is positioned at
On the movement locus of the second shoulder；The groove of described valve body right-hand member and the inner chamber of support are through and constitute low pressure chamber；
A pair axisymmetric high-pressure trough and a pair axisymmetric low pressure hole, and high pressure is had in the first shoulder of spool
Groove and low pressure hole are arranged alternately, and are provided with passage in spool vertically, and one end of passage connects with low pressure chamber, the other end and First
Low pressure hole connection on shoulder；A pair axisymmetric straight trough, the port of export of straight trough and sensitive cavity it is provided with vertically on the inwall of valve body
Connection, the arrival end of straight trough is positioned on the movement locus of the high-pressure trough port of export and the movement locus of low pressure hole exits end, and straight trough
Groove width equal with the distance between high-pressure trough and low pressure hole；Sensitive cavity can pass through straight trough, high-pressure trough connects with oil suction chamber, with to
Input hydraulic oil in sensitive cavity；Sensitive cavity can pass through straight trough, low pressure hole, passage, low pressure chamber connect with oil return opening, with to sensitive cavity
Interior input low pressure oil；
Being provided with rectangle frame in low pressure chamber rotationally, the left end fixed cover of described rectangle frame is located on spool, described rectangle
The central shaft of frame right-hand member sequentially passes through support and connecting plate；Spring base, the right-hand member of spool it is provided with slidably in described rectangle frame
Airtight through rectangle frame, the right side of spool is relative with spring base, and is compressed with back-moving spring between spool and spring base；Reset
One end of spring is set on spool, and the other end is set on the projection of spring base left end, and the right side of described spring base pushes against
On steel ball on a bracer, the both sides of described bracer are through rectangle frame and are fixed on support.
Described mechanical transmission mechanism includes directly on top upper driving lever and lower shift fork located directly below, upper driving lever lower half
The shifting block ovalize in portion, the first half of lower shift fork is the U-shaped fork of opening upwards, and the shifting block of upper driving lever is plugged in the U of lower shift fork
In shape fork, the rotating shaft of rotating machinery is fixing with upper driving lever to be connected, to drive upper driving lever to drive lower shift fork to rotate, and the end of lower shift fork
Portion is fixing with the central shaft of rectangle frame right-hand member to be connected, with band movable valve plug synchronous axial system；The top of upper driving lever is slidably disposed in
On horizon bar, and one end of horizon bar is arranged with and upper driving lever tilts the upper driving lever back-moving spring being pushed against in lower shift fork, upper group
Upper driving lever is tilted to be pushed against zero-bit state by bar back-moving spring.
Further, described rotary magnet is arranged on the top of valve body, and is furnished with protective cover.
Further, described upper driving lever is clamped on the output shaft of rotary magnet by the first trip bolt, described in set aside
Fork is clamped on the central shaft of rectangle frame by the second trip bolt.
The direction at the central shaft place axially referring to spool of the present invention.
In order to make the present invention have, volume is little, light weight, characteristic that response is fast, except electromechanical converter to be ensured has
Outside enough driving moments, also require that drive mechanism has the effect amplifying driving moment.The mechanical transmission mechanism of the present invention can make
Obtaining infinitely-great driving moment when spool is started working, therewith, the gear ratio between upper driving lever and lower shift fork is fast by infinity
Prompt drop is low, and corresponding spool rotating speed is quickly increased by infinitesimal, therefore can carry for spool when spool just starts to rotate
For infinitely-great driving moment to overcome hydraulic card clamping force, and back valve core quick rotation is to target location.This mechanical transmission mechanism
May be equally applied to the electro-hydraulic high-speed switch valve of 3-position 4-way 2D.
1) miniaturization for electro hydraulic on-off valve will certainly reduce the size of electromechanical converter, thus cause driving force/
The problem that moment is not enough；
The present invention uses variable ratio drive mechanism, makes initial driving moment infinitely great, rotates to overcome spool just to start
Time exist hydraulic card clamping force.
2) miniaturization for electro hydraulic on-off valve will certainly cause valve core reseting spring to diminish, thus causes restoring force not enough
Problem；
The present invention, by rectangle frame structure, makes spring not act directly on spool, but acts on rectangle frame, then lead to
Cross rectangle frame to be connected with spool with transmission power and motion.Rectangle frame structure considerably increases the installing space of spring, and it is right to reduce
The restriction of spring sizes so that spring can do big to increase spring force.
3) the two-stage concentric problem occurred when spool, valve body, concentric ring being installed.
The present invention does not use concentric ring mechanism to go to build low pressure chamber, but uses support to coordinate with spool and constitute into low pressure
Chamber, support only coordinates with spool, and required precision is relatively low, and fabrication and installation are more convenient.
The invention has the beneficial effects as follows:
1, volume is little, light weight, simple in construction；
2, capacity of resisting disturbance is strong, adapts to the complex working conditions such as Aero-Space；
3, use the mechanical transmission mechanism of variable ratio, effectively amplify the driving moment of spool, to overcome spool just initiating
Hydraulic card clamping force when making, reduces the input torque requirement to electromechanical converter simultaneously；
4, using hydraulic coupling to drive spool to slide, driving force is big, and frequency response is high；
5, need not the structure that two-stage is concentric, eliminate in conventional 2D valve and require with one heart and the processing that increases for meeting two-stage
Difficulty；
6, contamination resistance is strong, low to oil filtrating required precision.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is mechanical transmission mechanism structural representation.
Fig. 3 is valve body sectional view.
Fig. 4 is the partial sectional view of the present invention.
Fig. 5 be in Fig. 4 A-A to sectional view.
Fig. 6 is oil-in on valve body, oil-out and oil return opening position view.
Fig. 7 position spool cross sectional representation
Detailed description of the invention
As it can be seen, the microminiature 2D electromagnetic switch valve of a kind of spring reset, including being positioned at the valve body 20 in left side and being positioned at
The connecting plate 14 on right side, drives the mechanical transmission mechanism of valve core rotation to be arranged on connecting plate 14；Valve body 20 and connecting plate 14 lead to
Crossing support 15 coaxially connected, one end of support 15 is fixed in the groove in valve body 20, and the other end is fixed in connecting plate 14；
Spool 21 is rotatably arranged in valve body 20, and spool 21 is sequentially provided with first shoulder 211 and second from left to right
Shoulder 212, airtight for body cavity enclosure is become sensitive cavity g, first shoulder 211 with first shoulder 211 by the left end cap 22 of valve body 20
With the second shoulder 212 by airtight for body cavity enclosure cyclization around the annular oil suction chamber of spool 21, oil suction chamber c connects with oil inlet P；
Described valve body is provided with oil-out A, oil-out A and is positioned on the movement locus of the second shoulder 212；The groove of described valve body right-hand member and
The inner chamber of support 15 is through and constitutes low pressure chamber m；
A pair axisymmetric high-pressure trough y and a pair axisymmetric low pressure hole a is had in the first shoulder 211 of spool,
And high-pressure trough y and low pressure hole a is arranged alternately, being provided with passage b in spool 21 vertically, one end of passage b connects with low pressure chamber m,
The other end connects with the low pressure hole a in first shoulder 211；A pair axisymmetric straight trough f it is provided with vertically on the inwall of valve body 20,
The port of export of straight trough f connects with sensitive cavity g, and the arrival end of straight trough f is positioned at movement locus and the low pressure hole a of the high-pressure trough y port of export
On the movement locus of the port of export, and the distance between the groove width of straight trough f with high-pressure trough y and low pressure hole a is equal；Sensitive cavity g can be led to
Cross straight trough f, high-pressure trough y connects with oil suction chamber c, to input hydraulic oil in sensitive cavity g；Sensitive cavity g can pass through straight trough f, low pressure
Hole a, passage b, low pressure chamber m connect with oil return inlet T, to input low pressure oil in sensitive cavity g；
Being provided with rectangle frame 10 in low pressure chamber rotationally, the left end fixed cover of described rectangle frame 10 is located on spool 21, institute
The central shaft stating rectangle frame 10 right-hand member sequentially passes through support 15 and connecting plate 14；Spring it is provided with slidably in described rectangle frame 10
Seat 18, the right-hand member of spool 21 is airtight through rectangle frame 10, and the right side of spool 21 is relative with spring base 18, and spool 21 and spring
It is compressed with back-moving spring 19 between seat 18；One end of back-moving spring 19 is set on spool 21, and the other end is set in spring base 18
On the projection of left end, the right side of described spring base 18 is pushed against on the steel ball on a bracer, and the both sides of described bracer pass
Rectangle frame 10 is also fixed on support 15.
Described mechanical transmission mechanism includes directly on top upper driving lever 7 and lower shift fork 8 located directly below, upper driving lever 7
The shifting block ovalize of lower half, the first half of lower shift fork 8 is the U-shaped fork of opening upwards, and the shifting block of upper driving lever 7 is plugged in be set aside
In the U-shaped fork of fork 8, the rotating shaft of rotating machinery is fixing with upper driving lever 7 to be connected, to drive upper driving lever 7 to drive lower shift fork 8 to rotate, and
The bottom of lower shift fork 8 is fixing with the central shaft of rectangle frame 10 right-hand member to be connected, with band movable valve plug 21 synchronous axial system；The top of upper driving lever 7
Portion is slidably disposed on horizon bar 2, and one end of horizon bar 2 is arranged with and tilts to be pushed against in lower shift fork 8 by upper driving lever 7
Upper driving lever back-moving spring 1, upper driving lever 7 is tilted to be pushed against zero-bit state by upper driving lever back-moving spring 1.
Described bracer 16 is provided with steel ball 17 so that spring base 18 and a bracer 16 are point cantact, reduce spring base
Frictional resistance during 18 rotation and between a bracer 16, improves response speed.
Described rotary magnet is arranged on the top of valve body 20, and is furnished with protective cover.
Described upper driving lever 7 is clamped on the output shaft of rotary magnet 6 by the first trip bolt 5, and described lower shift fork 8 leads to
Cross the second trip bolt 9 to be clamped on the central shaft of rectangle frame 10.
Valve body 20 is connected by screw 11 with connecting plate 14, and drive mechanism passes through central shaft and the rotating electromagnetic of rectangle frame 15
The projecting shaft of ferrum 6 is arranged on the right side of connecting plate 14；Rotary magnet 6 is fastened on connecting plate top by screw 13.
Offering oil inlet P, oil-out A, oil return inlet T on valve body, valve body 20 is connected with high-pressure pump by oil inlet P, high
Press pump provides hydraulic oil for valve body 20；Valve body 20 is connected with hydraulic cylinder by oil-out A, to provide high hydraulic pressure to hydraulic cylinder；Valve
Body 20 is connected with fuel tank by oil return inlet T, and oil sump tank provides low pressure oil for valve body 20.
Described rotating machinery is rotary magnet 6, and rotary magnet 6 is connected with controller.Controller is to rotating electromagnetic
Ferrum 6 sending action order.Rotary magnet 6, as the electromechanical converter of the present invention, is positioned at above valve body 20, and by the
One screw 13 is connected with connecting plate 14, and protective cover 23 is connected with connecting plate 14 by the second screw 12, the box that the present invention arranges
Lid is fixed on connecting plate 14 by the 3rd screw 11, and horizon bar support 2 is fixed on connecting plate 14 by the 3rd screw 4, left
End cap 22 is fixed on valve body 20 by the 4th screw.
Support 15 is connected with connecting plate 14 and valve body 20, and rectangle frame 10 is welded on spool 21, rectangle frame 10 and valve body it
Between by first sealing ring seal, between central shaft and the connecting plate of rectangle frame 10 by second sealing ring seal.On support 15
Have a mounting groove for installing and bracer 16, and limit a bracer 16 and move right, bracer 16 general contact with spring base 18
On from the pressure transmission of spring 19 to support 15, back-moving spring 19 is installed on the left of spring base 18, to prevent from not leading at valve body
During oil, rectangle frame 10, a bracer 16, spring base 18 and spool 21 are collected together inside valve body 20, and when being not powered at logical oil are
Spool 21 provides reset drives power.
Spool 21, valve body 20 and left end cap 22 coordinate composition sensitive cavity g, and the cross section of high-pressure trough y and low pressure hole a is circle
Shape, to reduce processing technique difficulty.High-pressure trough y and low pressure hole a lays respectively at the both sides of straight trough f, and high-pressure trough and low pressure hole a it
Between distance equal with the width of straight trough f, one end of straight trough f communicates with sensitive cavity g, the other end and high-pressure trough or low pressure hole a phase
Connection, straight trough f connects with high-pressure trough or connects the rotational angle depending on spool with low pressure hole a, and controlling the pressure in sensitive cavity g
Power.One end of spool 21 is in sensitive cavity g, and the other end is being connected on rectangle frame 10, and rectangle frame is held out against by back-moving spring 19, quick
Sense chamber g and back-moving spring 19 are the Dao Kong mechanisms realizing switch valve spool corner with axial straight-line displacement conversion.
When the signal of telecommunication does not accesses, the back-moving spring 19 preloading compression deformation on the right side of spool 21, provide one for spool 21
Individual driving force to the left；In sensitive cavity g on the left of spool 21, the straight trough f connected with sensitive cavity g only connects with low pressure hole a, oil
Low pressure oil in case is passed through in sensitive cavity g through oil return inlet T, low pressure chamber m, passage b, low pressure hole a and straight trough f, is low in sensitive cavity g
Pressure, spool 21 is moved to the left under the effect of right side spring force, and the second shoulder 212 slightly moves to left, and the second shoulder 212 seals up out
Hydraulic fluid port A is near the left side of oil suction chamber, i.e. oil-out A blocks with oil inlet P, and oil-out A connects with oil return inlet T simultaneously, the present invention
Being positioned at zero-bit state, state the most as shown in Figure 3, now, now oil-out A connects with oil return inlet T, the low pressure oil in hydraulic cylinder
Fuel tank is flowed back to through oil-out A, oil return inlet T.
During energising, rotary magnet 6 rotates (rotation amplitude of rotary magnet 6 is 21 °), and drives upper driving lever 7 inverse time
Pin rotates, then go up driving lever 7 and drive lower shift fork 8, rectangle frame 10, spool 21 to rotate clockwise according to this, causes straight trough f and low pressure hole a
Staggering, straight trough f only connects with high-pressure trough, and hydraulic oil flows into sensitive cavity g through oil inlet P, high pressure chest c, high-pressure trough y, straight trough f
In, it is full of hydraulic oil in sensitive cavity g, now this hydraulic oil is more than the elastic force of back-moving spring 19, spool to the normal pressure of spool 21
21 slide to the right under the effect that this hydraulic oil normal pressure and back-moving spring 19 are made a concerted effort, and the second shoulder 212 slightly moves to right, oil-out
The left side of A loses blocking and connects with oil suction chamber, i.e. oil inlet P connects with oil-out A, and oil-out A disconnects with oil return inlet T, enters
Hydraulic oil in oil pocket is through oil-out A influent cylinder pressure or other sub-hydraulic systems.
Otherwise, when the present invention is by when being energized to power-off, and above change procedure is just the opposite.
Therefore, the present invention is the two-stage high-speed switch valve that spool has double freedom of motion, and the present invention utilizes machine driving
Mechanism drives spool to rotate, it is achieved pilot valve function, promotes spool under the effect of oil liquid pressure and back-moving spring elastic force
Move axially, it is achieved the high-speed opening and closing characteristic of valve port.
But frictional force, hydraulic power, greasy dirt and spool valve body machining accuracy etc. all can produce bigger in the moment of valve core rotation
Resistance, hydraulic pressure " clamping stagnation " phenomenon easily occurs, in order to make the present invention occur without hydraulic pressure " clamping stagnation " phenomenon, drive mechanism start
Moment must have bigger moment.
The drive mechanism of the present invention can realize torque-variable, and the lower half ovalize of upper driving lever 7, to realize becoming transmission
Ratio, owing to the rotation amplitude of rotary magnet 6 is 21 °, assembles for convenience, and realizes the symmetric design of upper driving lever 7, upper group
Driving lever 7 and lower shift fork 8 center of rotation line 10.5 ° in initial makeup location (the i.e. zero-bit state) deviation of bar 7, upper driving lever 7 with
Coordinate for linear contact lay between lower shift fork 8, and upper driving lever 7 intersects at upper and lower two contact points respectively with lower shift fork 8.Now, upper contact
The normal of point is just past the center of rotation of upper driving lever 7, according to " Kennedy-Aronhold the-orem ", upper driving lever 7 and the relative instantaneous center weight of lower shift fork 8
Closing, the instantaneous transmission ratio of drive mechanism is infinitely great, and lower shift fork 8 is equivalent to a shock response to the response of upper driving lever 7, output
Moment is the biggest, it is sufficient to overcome spool " clamping stagnation " phenomenon.
Along with the continuation campaign of upper driving lever 7, relative instantaneous center is close to the center of rotation of lower shift fork 8.From instantaneous theorem,
Upper driving lever 7 is the respective center of rotation inverse ratio to instantaneous distance with the gear ratio of lower shift fork 8, and therefore gear ratio reduces therewith, but
It is sufficient for rotating torque required after spool 21 starts.
Compared with existing stable drive ratio drive mechanism, the drive mechanism of the present invention initially will produce infinity in motion
Moment, to overcome the electro-hydraulic high-speed switch valve of 2D easily by problems pair such as frictional force, hydraulic power, greasy dirt and spool valve body machining accuracies
Hydraulic pressure " clamping stagnation " phenomenon that spool produces.
For ensureing to make spool 21 remain to be in zero-bit, at water in the case of the controller of switch valve is not powered on or lost efficacy
Installing shift fork back-moving spring 1 on flat bar 2, upper shift fork back-moving spring 1, horizon bar 2 constitute the position-limit mechanism of upper shift fork.Upper shift fork
Can rotate counterclockwise upon actuation, and oppress upper shift fork back-moving spring 1, when upper shift fork turns to maximum position and stops operating
After, upper shift fork and back-moving spring 1 are in resting state, and when controller power-off, upper shift fork back-moving spring 1 drives upper shift fork 7
Reset.
In order to improve the stability of present invention work, balance inertial force, need to be by upper driving lever 7 and the weight of the first trip bolt 5
The heart and the center superposition of rotating shaft of rotary magnet 6, central shaft and lower shift fork 8 and the weight of the second trip bolt 9 of rectangle frame 10
The heart overlaps.
Content described in this specification embodiment is only enumerating of the way of realization to inventive concept, the protection of the present invention
Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also includes art technology
Personnel according to present inventive concept it is conceivable that equivalent technologies means.
Claims (3)
1. a microminiature 2D electromagnetic switch valve for spring reset, including being positioned at the valve body in left side and being positioned at the connecting plate on right side,
The mechanical transmission mechanism driving valve core rotation is arranged on connecting plate；Valve body and connecting plate are coaxially connected by support, support
One end is fixed in the groove in valve body, and the other end is fixed in connecting plate；It is characterized in that:
Spool is rotatably arranged in valve body, and spool is sequentially provided with first shoulder and the second shoulder, a left side for valve body from left to right
Airtight for body cavity enclosure is become sensitive cavity, first shoulder and the second shoulder by airtight for body cavity enclosure with first shoulder by end cap
Cyclization is around the annular oil suction chamber of spool, and oil suction chamber connects with oil-in；Described valve body is provided with oil-out, and oil-out is positioned at second
On the movement locus of shoulder；The groove of described valve body right-hand member and the inner chamber of support are through and constitute low pressure chamber；
Have a pair axisymmetric high-pressure trough and a pair axisymmetric low pressure hole in the first shoulder of spool, and high-pressure trough and
Low pressure hole is arranged alternately, and is provided with passage in spool vertically, and one end of passage connects with low pressure chamber, on the other end and first shoulder
Low pressure hole connection；Being provided with a pair axisymmetric straight trough on the inwall of valve body vertically, the port of export of straight trough connects with sensitive cavity,
The arrival end of straight trough is positioned on the movement locus of the high-pressure trough port of export and the movement locus of low pressure hole exits end, and the groove width of straight trough
Equal with the distance between high-pressure trough and low pressure hole；Sensitive cavity can pass through straight trough, high-pressure trough connects with oil suction chamber, with to sensitive cavity
Interior input hydraulic oil；Sensitive cavity can pass through straight trough, low pressure hole, passage, low pressure chamber connect with oil return opening, to input in sensitive cavity
Low pressure oil；
Being provided with rectangle frame in low pressure chamber rotationally, the left end fixed cover of described rectangle frame is located on spool, and described rectangle frame is right
The central shaft of end sequentially passes through support and connecting plate；Being provided with spring base in described rectangle frame slidably, the right-hand member of spool is airtight
Through rectangle frame, the right side of spool is relative with spring base, and is compressed with back-moving spring between spool and spring base；Back-moving spring
One end be set on spool, the other end is set on the projection of spring base left end, and the right side of described spring base is pushed against
On steel ball on bracer, the both sides of described bracer are through rectangle frame and are fixed on support.
Described mechanical transmission mechanism includes directly on top upper driving lever and lower shift fork located directly below, upper driving lever lower half
Shifting block ovalize, the first half of lower shift fork is the U-shaped fork of opening upwards, and the shifting block of upper driving lever is plugged in the U-shaped fork of lower shift fork
In, the rotating shaft of rotating machinery and upper driving lever are fixing to be connected, to drive upper driving lever to drive lower shift fork rotation, and the bottom of lower shift fork and
The central shaft of rectangle frame right-hand member is fixing to be connected, with band movable valve plug synchronous axial system；The top of upper driving lever is slidably disposed in level
On bar, and one end of horizon bar is arranged with and upper driving lever is tilted the upper driving lever back-moving spring being pushed against in lower shift fork, and upper driving lever is multiple
Upper driving lever is tilted to be pushed against zero-bit state by position spring.
The microminiature 2D electromagnetic switch valve of a kind of spring reset the most as claimed in claim 1, it is characterised in that: described electric rotating
Magnet is arranged on the top of valve body, and is furnished with protective cover.
The microminiature 2D electromagnetic switch valve of a kind of spring reset the most as claimed in claim 2, it is characterised in that: described upper driving lever
Being clamped on the output shaft of rotary magnet by the first trip bolt, described lower shift fork is clamped in square by the second trip bolt
On the central shaft of shape frame.
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| CN201610570373.1A CN106122145B (en) | 2016-07-19 | 2016-07-19 | A kind of microminiature 2D electromagnetic switch valves of spring reset |
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| CN201610570373.1A CN106122145B (en) | 2016-07-19 | 2016-07-19 | A kind of microminiature 2D electromagnetic switch valves of spring reset |
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| CN106122145B CN106122145B (en) | 2018-11-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457127A (en) * | 2019-01-22 | 2020-07-28 | 浙江工业大学 | Two-dimensional pilot-operated electromagnetic cartridge valve |
| CN112555441A (en) * | 2020-10-30 | 2021-03-26 | 湖州职业技术学院 | Large-flow proportional throttle valve |
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| US20110168012A1 (en) * | 2009-10-16 | 2011-07-14 | Dennis Reust | Hydraulic pressure feedback for servovalves |
| CN101737371A (en) * | 2010-02-09 | 2010-06-16 | 浙江工业大学 | Zero maintaining mechanism of 2D digital servo valve |
| CN102168700A (en) * | 2011-05-06 | 2011-08-31 | 浙江工业大学 | Permanent magnet zero-position retaining mechanism of two-dimensional digital servo valve |
| EP2824335A1 (en) * | 2013-05-29 | 2015-01-14 | Bomar S.A. | Multifunctional modular hydraulic valve block assembly |
| WO2015135554A1 (en) * | 2014-03-13 | 2015-09-17 | محمد أحمد الجميل، | Hydraulic distributors with rapid change-over between operating positions |
| CN206092556U (en) * | 2016-07-19 | 2017-04-12 | 浙江工业大学 | Spring homing's microminiature 2D electromagnetic switch valve |
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| CN111457127A (en) * | 2019-01-22 | 2020-07-28 | 浙江工业大学 | Two-dimensional pilot-operated electromagnetic cartridge valve |
| CN112555441A (en) * | 2020-10-30 | 2021-03-26 | 湖州职业技术学院 | Large-flow proportional throttle valve |
| CN112555441B (en) * | 2020-10-30 | 2022-06-17 | 湖州职业技术学院 | Large-flow proportional throttle valve |
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