CN106122146B - The microminiature 2D electromagnetic switch valves that a kind of hydraulic pressure resets - Google Patents
The microminiature 2D electromagnetic switch valves that a kind of hydraulic pressure resets Download PDFInfo
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- CN106122146B CN106122146B CN201610574238.4A CN201610574238A CN106122146B CN 106122146 B CN106122146 B CN 106122146B CN 201610574238 A CN201610574238 A CN 201610574238A CN 106122146 B CN106122146 B CN 106122146B
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- spool
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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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- Physics & Mathematics (AREA)
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The microminiature 2D electromagnetic switch valves that a kind of hydraulic pressure resets, spool are rotatably arranged in valve body；The arrival end of pressure hole is connected with the passage in spool, and the arrival end of trough is connected with oil return hole；The port of export of straight trough is connected with sensitive cavity, and the arrival end of straight trough is located on the movement locus of the pressure hole port of export and the movement locus of the trough port of export；The left end of framework is fixed and is set on spool, the central shaft of framework right end sequentially passes through stent and connecting plate, the airtight opening through pressurize block left end of the right end of spool and it is slidably disposed in pressurize block, the right-end openings of pressurize block are connected by the first ball seal, high pressure chest with the passage in spool；Zero reset spring is arranged with pressurize block；Mechanical transmission mechanism includes upper driving lever and lower shift fork, and the shifting block of upper driving lever lower half is oval, and the first half of lower shift fork is the U-shaped fork of opening upwards, and one end of horizon bar is arranged with driving lever resetting spring.
Description
Technical field
The present invention relates to a kind of switch valve, more particularly to the microminiature 2D electromagnetic switch valves that a kind of hydraulic pressure resets.
Background technology
In recent years, the two-dimentional electro hydraulic on-off valve to be worked using servo screw mechanism principle has spool radial rotating and axial direction
Mobile double freedom, control are flexibly, precision is high, frequency response is fast, low-hysteresis, leakage rate are small, advantages of simple structure and simple, main at present
It is used in the military fields such as aerospace, guided missile and mostly under extreme environment.
But existing two-dimentional (2D) hydraulic valve ensures that spool is subject to enough drivings using the concentric structure of two-stage
Power, this also causes two dimension (2D) hydraulic valve of this structure to be difficult to realize miniaturization.
In order to meet that airborne equipment still has its light weight and small requirement, Hydraulic Elements during miniaturization
Following problem fails to solve：1st, the miniaturization of electro hydraulic on-off valve will certainly reduce the size of electromechanical converter, so as to cause to drive
The problem of power/forces square is insufficient；2nd, the miniaturization of electro hydraulic on-off valve will certainly cause valve core reseting spring to diminish, so as to cause back
Multiple hypodynamic problem；3rd, the two-stage concentric problem occurred when spool, valve body, concentric ring installation.
The content of the invention
In order to overcome hydraulic valve miniaturization that electromechanical converter driving force deficiency, resetting spring restoring force can be caused small
Problem, and can meet airborne equipment to hydraulic component strong antijamming capability, light weight, it is small, response it is fast the needs of, this hair
It is bright to provide a kind of no two-stage concentric airborne microminiature two dimension electro hydraulic on-off valve.
The technical scheme is that：
The microminiature 2D electromagnetic switch valves that a kind of hydraulic pressure resets, including the valve body positioned at left side and the connection positioned at right side
Plate, drives the mechanical transmission mechanism of valve core rotation to be arranged on the right flank of connecting plate；
Spool is rotatably arranged in valve body, and spool is equipped with first shoulder, the second shoulder and is used for successively from left to right
The 3rd shoulder of oil outlet, the left end cap of valve body and first shoulder are sealed by the airtight enclosure cyclization table in left end cap of body cavity
The annular sensitive cavity of pillar on face, the second shoulder and the 3rd shoulder by the airtight enclosure cyclization of body cavity around spool annular into
Oil pocket, oil outlet are located on the movement locus of the 3rd shoulder；
Oil suction chamber is connected with the oil inlet on valve body, is equipped with passage, oil suction chamber and the passage in spool in spool vertically
Connected by the radial direction oil-through-hole on spool, a pair of axisymmetric pressure hole is had in first shoulder and a pair is axisymmetric
Trough, and pressure hole and trough are arranged alternately, the arrival end of pressure hole is connected with the passage in spool, the entrance of trough
End is connected with oil return hole；A pair of axisymmetric straight trough is equipped with the inner wall of valve body vertically, the port of export and the sensitive cavity of straight trough connect
Logical, the arrival end of straight trough is located on the movement locus of the pressure hole port of export and the movement locus of the trough port of export；
Valve body and connecting plate are coaxially connected by stent, and one end of stent is fixed in valve body, and the other end is fixed on connection
In plate, the interior intracavitary of stent is rotationally equipped with framework, and the left end of the framework, which is fixed, to be set on spool, the framework right end
Central shaft sequentially pass through stent and connecting plate；The pressurize block of tubular is coaxially provided with the framework, the right end of spool is airtight to be worn
Cross the opening of pressurize block left end and be slidably disposed in pressurize block, the right-end openings of the pressurize block are close by the first sphere
Envelope, the right side of spool and the first sphere enclose high pressure chest by pressurize block inner cavity is airtight, the high pressure chest with it is logical in spool
Road connects；
Zero reset spring is arranged with the pressurize block, one end of zero reset spring is contradicted on the inner wall of framework,
The other end is contradicted on the step surface of pressurize block right end；
The 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 in portion is oval, and 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 rotation axis of rotating machinery is fixedly connected with upper driving lever, to drive upper driving lever to drive lower shift fork to rotate, and lower shift fork
Bottom is fixedly connected with the central shaft of framework right end, is rotated synchronously with band movable valve plug；It is slidably disposed at the top of upper driving lever
On horizon bar, and one end of horizon bar is arranged with the upper driving lever resetting spring for tilting upper driving lever and being pushed against in lower shift fork.
Further, equipped with the supporting block being pushed against the first sphere from outside on pressurize block, the support in the framework
The both ends of block are through framework and are fixed on stent.
Further, the pillar is equipped with the second sphere, and the left side of second sphere and first shoulder is inconsistent.
Further, the rotating machinery is rotary magnet.
Further, high-pressure trough is equipped with the port of export of the pressure hole, pressure hole is connected by high-pressure trough with straight trough, and low
Indent and the distance between high-pressure trough are equal with the width of straight trough.
Further, upper driving lever resetting spring is pushed against on upper driving lever by gasket, and the gasket is slidably disposed on institute
State on horizon bar.
Further, the rotary magnet is arranged on the top of valve body, and is furnished with protective cover.
Further, the upper driving lever is clamped on the output shaft of rotary magnet by the first trip bolt, described to set aside
Fork is clamped on the central shaft of framework by the second trip bolt.
In order to make the present invention that there is the fast characteristic of small, light weight, response, except electromechanical converter to be ensured has
Outside enough driving moments, transmission mechanism is also required to play the role of amplifying driving moment.The mechanical transmission mechanism of the present invention can make
Infinitely great driving moment is obtained when spool is started to work, therewith, the gearratio between upper driving lever and lower shift fork is by infinitely great fast
Prompt drop is low, and corresponding spool rotating speed can be carried by infinitely small quick increase when spool just starts to rotate for spool
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
It may be equally applied to the electro-hydraulic high-speed switch valves of 3-position 4-way 2D.
The second sphere on left end cap forms point contact with spool left end；First sphere of pressurize block right end welding and support
Block forms point contact, can reduce frictional force, ensures that spool is only acted on when rotating by hydraulic card clamping force, substantially increases it
Response speed.
1) miniaturization for electro hydraulic on-off valve will certainly reduce the size of electromechanical converter, thus cause driving force/
The problem of torque is insufficient；
The present invention uses variable ratio transmission mechanism, makes initial drive force square infinitely great, to overcome spool just to start to rotate
When existing hydraulic card clamping force.
2) miniaturization for electro hydraulic on-off valve will certainly cause valve core reseting spring to diminish, so as to cause restoring force insufficient
The problem of；
The present invention uses hydraulic pressure resetting-mechanism, is full of high pressure oil all the time in high pressure chest of the invention, and when leading to oil, spool is answered
Position is driven by high pressure oil.
3) the two-stage concentric problem occurred when being installed for spool, valve body, concentric ring.
The present invention is coordinated using pressurize block and spool and formed into high pressure chest without concentric ring mechanism is used, pressurize block only with
Spool coordinates, and required precision is relatively low, is more convenient.
The beneficial effects of the invention are as follows：
1st, small, light weight is simple in structure；
2nd, connection mode connects for tubular type, and the pipe fitting of three stretchings makes its installation more flexible；
3rd, strong antijamming capability, adapts to the complex working conditions such as aerospace；
4th, spool both ends and valve body contact mode are point contact, reduce valve core rotation damping；
5th, using the driving moment of the mechanical transmission mechanism of variable ratio, effectively amplification spool, initiating at the beginning of to overcome spool
Hydraulic card clamping force when making, while reduce the input torque requirement to electromechanical converter；
6th, slided using hydraulic coupling driving spool, hydraulic coupling driving valve core reset, driving force is big, and frequency response is high；
7th, the concentric structure of two-stage is not required, it is to meet that two-stage requires and increased processing with one heart to eliminate in conventional 2D valves
Difficulty；
8th, contamination resistance is strong, low to oil filtrating required precision.
Brief description of the drawings
Fig. 1 is the principle schematic diagram of the present invention.
Fig. 2 is the structure diagram of spool.
Fig. 3 is the sectional view of the present invention.
Fig. 4 is the partial sectional view of the present invention.
Fig. 5 is spool and valve body cooperation schematic diagram.
Fig. 6 be in Fig. 5 E-E to sectional view
Fig. 7 is transmission mechanism structure diagram.
Embodiment
As shown in the figure, the microminiature 2D electromagnetic switch valves that a kind of hydraulic pressure resets, including valve body 22 positioned at left side and it is located at
The connecting plate 1 on right side, the mechanical transmission mechanism that driving spool 21 rotates are arranged on the right flank of connecting plate 1；
Spool 21 is rotatably arranged in valve body 22, and spool 21 is equipped with first shoulder 211, second successively from left to right
Shoulder 212 and the 3rd shoulder 213 for sealing oil outlet A, the left end cap 26 of valve body 21 and first shoulder 211 are by body cavity gas
The annular sensitive cavity of pillar of the close enclosure cyclization on left end interior surface, the second shoulder 212 and the 3rd shoulder 213 are by valve body
The airtight enclosure cyclization of chamber is around the annular oil suction chamber of spool 21, and oil outlet position A is on the movement locus of the 3rd shoulder 213；
Oil suction chamber is connected with the oil inlet P on valve body 22, is equipped with passage y in spool 21 vertically, oil suction chamber with spool
Passage y connected by radial direction oil-through-hole c on spool 21, a pair of axisymmetric pressure hole b is had in first shoulder 211
With a pair of axisymmetric trough a, and pressure hole b and trough a are arranged alternately, the arrival end of pressure hole b with spool 21
Passage y is connected, and the arrival end of trough a is connected with oil return hole T；It is equipped with vertically on the inner wall of valve body 22 a pair of axisymmetric straight
The port of export of groove f, straight trough f are connected with sensitive cavity g, and the arrival end of straight trough f is located at the movement locus and low pressure of the pressure hole b ports of export
On the movement locus of the groove a ports of export；Sensitive cavity g can be connected by straight trough f, pressure hole b, passage y, oil-through-hole c with oil suction chamber, with
High pressure oil is inputted into sensitive cavity g；Sensitive cavity g can be connected by straight trough f, trough a with oil return inlet T, with defeated into sensitive cavity g
Enter low pressure oil.
Valve body 22 and connecting plate 1 are coaxially connected by stent 19, and one end of stent 19 is fixed in valve body 22, and the other end is solid
It is scheduled in connecting plate 1, the interior intracavitary of stent 19 is rotationally equipped with framework 15, and the left end of the framework 15, which is fixed, is set in spool
On 21, the central shaft of 15 right end of framework sequentially passes through stent 19 and connecting plate 1；Tubular is coaxially provided with the framework 15
Pressurize block 17, the airtight opening through 17 left end of pressurize block of the right end of spool 21 and is slidably disposed in pressurize block 17, protects
The right-end openings of briquetting 17 are sealed by the first sphere 31, and the right side of spool 21 and the first sphere 31 are by 17 inner cavity gas of pressurize block
Close to enclose high pressure chest h, the high pressure chest h is connected with the passage y in spool 21；
Zero reset spring 18 is arranged with the pressurize block 17, one end of zero reset spring 18 is contradicted in framework 15
On inner wall, the other end is contradicted on the step surface of 15 right end of pressurize block；
The mechanical transmission mechanism includes directly on top upper driving lever 10 and lower shift fork 12 located directly below, upper driving lever
The shifting block of 10 lower half is oval, and the first half of lower shift fork 12 is the U-shaped fork of opening upwards, and the shifting block of upper driving lever 10 is plugged in
In the U-shaped fork of lower shift fork 12, the shaft of rotating machinery is fixedly connected with upper driving lever 10, to drive upper driving lever 10 to drive lower shift fork 12
Rotate, and the bottom of lower shift fork 12 is fixedly connected with the central shaft of 15 right end of framework, is rotated synchronously with band movable valve plug 21；Upper driving lever
10 top is slidably disposed on horizon bar 2, and one end of horizon bar 2 is arranged with to tilt to be pushed against by upper driving lever 10 and sets aside
Upper driving lever 10 is tilted and is pushed against zero-bit state by the upper driving lever resetting spring 5 in fork 12, upper driving lever resetting spring 5.
Equipped with the supporting block 16 being pushed against the first sphere 31 from outside on pressurize block 17, the support in the framework 15
The both ends of block 16 are through framework 15 and are fixed on stent 19.
The pillar is equipped with the second sphere 25, and second sphere 25 and the left side of first shoulder 211 are inconsistent, the
Two spheres 25 and first shoulder 211 are point contact, to reduce frictional resistance when spool 21 rotates, improve response speed.
High-pressure trough is equipped with the port of export of the pressure hole b, pressure hole b is connected by high-pressure trough with straight trough f, and trough
A and the distance between high-pressure trough are equal with the width of straight trough f.
Upper driving lever resetting spring 5 is pushed against on upper driving lever 10 by gasket 4, and the gasket 4 is slidably disposed on described
On horizon bar 2.
The rotary magnet is arranged on the top of valve body 22, and is furnished with protective cover 29.
The upper driving lever 10 is clamped on the output shaft of rotary magnet 9 by the first trip bolt 8, the lower shift fork 12
It is clamped in by the second trip bolt 13 on the central shaft of framework 15.
Oil inlet P, oil outlet A, oil return inlet T are offered on valve body, valve body 22 is connected by oil inlet P with high-pressure pump, high
Press pump provides high pressure oil for valve body 22；Valve body 22 is connected by oil outlet A with hydraulic cylinder, to provide high hydraulic pressure to hydraulic cylinder；Valve
Body 22 is connected by oil return inlet T with fuel tank, and oil return box provides low pressure oil for valve body 22.
The rotating machinery is rotary magnet 9, and rotary magnet 9 is connected with controller.Controller is to rotating electromagnetic
9 sending action order of iron.Electromechanical converter of the rotary magnet 9 as the present invention, above valve body 22, and passes through the
One screw 30 is connected with connecting plate 1, and protective cover 29 is connected by the second screw 28 with connecting plate 1, while box lid 11 passes through
Three screws 3 are connected on connecting plate 1, and horizon bar stent 7 is fixed on connecting plate 1 by the 3rd screw, and left end cap 26 passes through
4th screw 27 is fixed on valve body 22.
Stent 19 is connected with connecting plate 1 and valve body 22, and rectangle frame 15 is welded on spool 21, between rectangle frame 15 and valve body
Sealed by the first sealing ring 20, sealed between the central shaft and connecting plate of rectangle frame 15 by the second sealing ring 14.Stent 19
On be provided with mounting groove and be used for constraining supporting block 16 and moving right, the supporting block 16 contacted with pressurize block 17 is by from high pressure chest h's
Hydraulic coupling is delivered on stent 19, and the left side of pressurize block 17 is provided with zero reset spring 18, to prevent from not being passed through pressure in valve
When rectangle frame 15, supporting block 16, pressurize block 17 and spool 21 in 22 inside moving of valve body.
Spool 21, valve body 22 and left end cap 26 coordinate the circular in cross-section for forming sensitive cavity g, high-pressure trough and trough a,
To reduce processing technology difficulty.High-pressure trough and trough a are located at the both sides of straight trough f respectively, and between high-pressure trough and trough a
Distance is equal with the width of straight trough f, and one end of straight trough f is communicated with sensitive cavity g, and the other end is connected with high-pressure trough or trough a,
Straight trough f is connected with high-pressure trough or the rotational angle depending on spool is connected with trough a, and controls the pressure in sensitive cavity g.Valve
One end of core 21 is in sensitive cavity g, and for the other end in high pressure chest h, sensitive cavity g and high pressure chest h are to realize switch valve spool corner
With the Dao Kong mechanisms of axial straight-line displacement conversion.
When electric signal does not access, in the high pressure chest h on the right side of spool 21, high pressure oil is through oil inlet P, logical hydraulic fluid port c, passage
H enters high pressure chest h, is high pressure in high pressure chest h；In the sensitive cavity g in the left side of spool 21, the straight trough f that is connected with sensitive cavity g only with
Trough a is connected, and the low pressure oil in fuel tank is passed through in sensitive cavity g through oil return inlet T, trough a, straight trough f, to be low in sensitive cavity g
Pressure, spool 21 are moved to the left in the high pressure chest h of right side under the action of high pressure liquid pressure oil, and the 3rd shoulder slightly moves to left, the 3rd shoulder
213 seal up oil outlet A blocks close to the left side of oil suction chamber, i.e. oil outlet A, and the present invention is located at zero-bit state, i.e., as shown in Figure 3
State, at this time, oil outlet A is connected with oil return inlet T at this time, and the low pressure oil in hydraulic cylinder is flowed back to by oil outlet A, oil return inlet T
Fuel tank.
During energization, rotary magnet 9 rotates (rotation amplitude of rotary magnet 9 is 21 °), and drives upper 10 inverse time of driving lever
Pin rotates, then upper driving lever 10 drives lower shift fork 12, framework 15, spool 13 to rotate clockwise according to this, causes straight trough f and trough a
Stagger, straight trough f is only connected with high-pressure trough to be led to, and high pressure oil flows into quick by oil inlet P, oil-through-hole c, passage y, high-pressure trough, straight trough f
Feel in chamber g, with being high pressure oil in high pressure chest in sensitive cavity g, but because the forced area of sensitive cavity g inner spools 21 is more than high pressure chest
The forced area (cross-sectional area of spool is larger at first shoulder 211) of h inner spools 21, spool 21 be subject to the right make a concerted effort, valve
Core 21 slides to the right in sensitive cavity g under the thrust of high pressure oil, and the 3rd shoulder 213 slightly moves to right, and the left side of oil outlet A is lost
Go to block and connect with oil suction chamber, i.e., oil inlet P is connected with oil outlet A, and the high pressure oil in oil suction chamber passes through oil outlet A influents
Cylinder pressure or other sub- hydraulic systems.
Conversely, when the present invention is by being energized to power-off, 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 driving spool rotates, and realizes pilot valve function, and spool axial movement is promoted under the action of oil liquid pressure difference, is realized
The high-speed opening and closing characteristic of valve port.
Preferably, when the cross-sectional area of sensitive cavity inner spool is twice of the cross-sectional area of high pressure chest inner spool, when quick
When sense intracavitary is passed through low pressure, spool is moved to the left under the hydraulic coupling F effects to the left；When being passed through high pressure in sensitive cavity, spool
Left end is subject to hydraulic coupling 2F to the right, and right end is subject to hydraulic coupling F to the left, and spool makes a concerted effort to move right under F effects to the right.
I.e. spool always size be F active force under be moved to the left or move right, can so ensure spool be moved to the left and to
The speed moved right is identical.
But frictional force, hydraulic power, greasy dirt and spool valve body machining accuracy etc. can all produce larger in the moment of valve core rotation
Resistance, easily there is hydraulic pressure " clamping stagnation " phenomenon, in order to make the present invention occur without hydraulic pressure " clamping stagnation " phenomenon, transmission mechanism is starting
Moment must have larger torque.
The transmission mechanism of the present invention can realize torque-variable, and the lower half of upper driving lever 10 is oval, become transmission to realize
Than, since the rotation amplitude of rotary magnet 9 is 21 °, assemble for convenience, and realize the symmetric design of upper driving lever 10, on
10.5 ° of driving lever 10 and 12 pivot line of lower shift fork, upper to dial in initial makeup location (i.e. zero-bit state) deviation of driving lever 10
It is engaged between bar 10 and lower shift fork 12 for line, and upper driving lever 10 intersects at R points and S points respectively with lower shift fork 12, such as Fig. 7 institutes
Show.At this time, the normal of contact point R is just past the pivot of upper driving lever 10, and according to " Kennedy-Aronhold the-orem ", upper driving lever 10 is with setting aside
The relative instantaneous center of fork 12 overlaps, and the instantaneous transmission ratio of transmission mechanism is infinity, and response of the lower shift fork 12 to upper driving lever 10 is suitable
It is very big in a shock response, output torque, it is sufficient to overcome hydraulic pressure " clamping stagnation " phenomenon.
Continue to move with upper driving lever 10, relative instantaneous center is close to the center of rotation of lower shift fork 12.Can by instantaneous theorem
Know, the gearratio of upper driving lever 10 and lower shift fork 12 is inverse ratio of the respective center of rotation to instantaneous distance, therefore gearratio subtracts therewith
It is small, but it is sufficient for the rotating torque needed for after spool 13 starts.
Compared with existing stable drive ratio transmission mechanism, transmission mechanism of the invention will initially produce infinity in movement
Torque, to overcome the electro-hydraulic high-speed switch valves of 2D easily by the problems such as frictional force, hydraulic power, greasy dirt and spool valve body machining accuracy pairs
Hydraulic pressure " clamping stagnation " phenomenon that spool produces.
Controller to ensure in switch valve be not powered on or fail in the case of so that spool 13 remains to be in zero-bit, in water
Upper shift fork resetting spring 5 is installed, upper shift fork resetting spring 5, horizon bar 2 and gasket 4 form the position restrainer of upper shift fork on flat bar 2
Structure.Upper shift fork can rotate counterclockwise upon actuation, and oppress upper shift fork resetting spring 5 by gasket 4, when upper shift fork turns to most
Big position and after stopping operating, upper shift fork and resetting spring 5 are in inactive state, when controller power off, upper shift fork reset
Spring 5 drives upper shift fork 10 to reset.
In order to improve the stability that the present invention works, balance inertial force need to be by the weight of upper 10 and first trip bolt 8 of driving lever
The heart is overlapped with the center of the shaft of rotary magnet 9, the weight of the central shaft of spool 13 and 12 and second trip bolt 13 of lower shift fork
The heart overlaps.
To prevent switch valve spool 13 in 22 inside play of valve body, guarantee zeroing of spool 13 in transportational process from doing steadily
Axial movement, prevent from colliding with valve body 22, and ensure to be not powered in controller at the same time and logical oily situation bottom spool 13
In absolute zero position, zero reset spring 18 is arranged with the pressurize block 17, zero reset spring 18 drives spool 13 not
Zero-bit is returned to when oily.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the 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 conceive according to the present invention it is conceivable that equivalent technologies mean.
Claims (8)
- A kind of 1. microminiature 2D electromagnetic switch valves that hydraulic pressure resets, it is characterised in that：Including the valve body positioned at left side and positioned at the right side The connecting plate of side, drives the mechanical transmission mechanism of valve core rotation to be arranged on the right flank of connecting plate；Spool is rotatably arranged in valve body, and spool is equipped with first shoulder, the second shoulder and for sealing successively from left to right 3rd shoulder of oil outlet, the left end cap and first shoulder of valve body are by the airtight enclosure cyclization of body cavity on left end interior surface Pillar annular sensitive cavity, the annular oil inlet of the second shoulder and the 3rd shoulder by the airtight enclosure cyclization of body cavity around spool Chamber, oil outlet are located on the movement locus of the 3rd shoulder；Oil suction chamber is connected with the oil inlet on valve body, is equipped with passage in spool vertically, and oil suction chamber passes through with the passage in spool Radial direction oil-through-hole on spool connects, and a pair of axisymmetric pressure hole and a pair of axisymmetric low pressure are had in first shoulder Groove, and pressure hole and trough are arranged alternately, the arrival end of pressure hole is connected with the passage in spool, the arrival end of trough with Oil return hole connects；A pair of axisymmetric straight trough is equipped with the inner wall of valve body vertically, the port of export of straight trough is connected with sensitive cavity, directly The arrival end of groove is located on the movement locus of the pressure hole port of export and the movement locus of the trough port of export；Valve body and connecting plate are coaxially connected by stent, and one end of stent is fixed in valve body, and the other end is fixed in connecting plate, The interior intracavitary of stent is rotationally equipped with framework, and the left end of the framework, which is fixed, to be set on spool, in the framework right end Mandrel sequentially passes through stent and connecting plate；The pressurize block of tubular is coaxially provided with the framework, the right end of spool is airtight through guarantor The opening of briquetting left end and be slidably disposed in pressurize block, the right-end openings of the pressurize block by the first ball seal, The right side of spool and the first sphere enclose high pressure chest by pressurize block inner cavity is airtight, and the high pressure chest connects with the passage in spool It is logical；Zero reset spring is arranged with the pressurize block, one end of zero reset spring is contradicted on the inner wall of framework, another End is contradicted on the step surface of pressurize block right end；The mechanical transmission mechanism includes directly on top upper driving lever and lower shift fork located directly below, upper driving lever lower half Shifting block is oval, and 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 Interior, the rotation axis of rotating machinery is fixedly connected with upper driving lever, to drive upper driving lever to drive lower shift fork to rotate, and the bottom of lower shift fork It is fixedly connected with the central shaft of framework right end, is rotated synchronously with band movable valve plug；Level is slidably disposed at the top of upper driving lever On bar, and one end of horizon bar is arranged with the upper driving lever resetting spring for tilting upper driving lever and being pushed against in lower shift fork.
- 2. the microminiature 2D electromagnetic switch valves that a kind of hydraulic pressure as claimed in claim 1 resets, it is characterised in that：In the framework Equipped with the supporting block being pushed against the first sphere from outside on pressurize block, the both ends of the supporting block through framework and are fixed on branch On frame.
- 3. the microminiature 2D electromagnetic switch valves that a kind of hydraulic pressure as claimed in claim 2 resets, it is characterised in that：On the pillar Equipped with the second sphere, the left side of second sphere and first shoulder is inconsistent.
- 4. the microminiature 2D electromagnetic switch valves that a kind of hydraulic pressure as claimed in claim 3 resets, it is characterised in that：The rotation is set Standby is rotary magnet.
- 5. the microminiature 2D electromagnetic switch valves that a kind of hydraulic pressure as claimed in claim 4 resets, it is characterised in that：The pressure hole The port of export at be equipped with high-pressure trough, pressure hole is connected by high-pressure trough with straight trough, and the distance between trough and high-pressure trough with The width of straight trough is equal.
- 6. the microminiature 2D electromagnetic switch valves that a kind of hydraulic pressure as claimed in claim 5 resets, it is characterised in that：Upper driving lever resets Spring is pushed against on upper driving lever by gasket, and the gasket is slidably disposed on the horizon bar.
- 7. the microminiature 2D electromagnetic switch valves that a kind of hydraulic pressure as claimed in claim 6 resets, it is characterised in that：The electric rotating Magnet is arranged on the top of valve body, and is furnished with protective cover.
- 8. the microminiature 2D electromagnetic switch valves that a kind of hydraulic pressure as claimed in claim 7 resets, it is characterised in that：The upper driving lever It is clamped in by the first trip bolt on the output shaft of rotary magnet, the lower shift fork is clamped in frame by the second trip bolt On the central shaft of body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610574238.4A CN106122146B (en) | 2016-07-19 | 2016-07-19 | The microminiature 2D electromagnetic switch valves that a kind of hydraulic pressure resets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN116498786B (en) * | 2023-06-25 | 2023-09-22 | 浙大城市学院 | Two-dimensional electrohydraulic servo valve based on double-redundancy transmission mechanism |
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| 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 |
| CN205895738U (en) * | 2016-07-19 | 2017-01-18 | 浙江工业大学 | Microminiature 2D electromagnetic switch valve that hydraulic pressure resets |
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| US7210500B2 (en) * | 2004-10-28 | 2007-05-01 | Hr Textron, Inc. | Methods and apparatus for mechanically adjusting a null offset in a torque motor of a servovalve |
| US8739680B2 (en) * | 2009-10-16 | 2014-06-03 | Dennis Reust | Hydraulic pressure feedback for servovalves |
| WO2015135554A1 (en) * | 2014-03-13 | 2015-09-17 | محمد أحمد الجميل، | Hydraulic distributors with rapid change-over between operating positions |
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| 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 |
| CN205895738U (en) * | 2016-07-19 | 2017-01-18 | 浙江工业大学 | Microminiature 2D electromagnetic switch valve that hydraulic pressure resets |
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