CN204187093U - Electro-hydraulic proportional valve - Google Patents
Electro-hydraulic proportional valve Download PDFInfo
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- CN204187093U CN204187093U CN201420543873.2U CN201420543873U CN204187093U CN 204187093 U CN204187093 U CN 204187093U CN 201420543873 U CN201420543873 U CN 201420543873U CN 204187093 U CN204187093 U CN 204187093U
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- hydraulic proportional
- proportional valve
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Abstract
The utility model discloses a kind of electro-hydraulic proportional valve, comprising: valve pocket; Pole shoe; Coil; Spool, spool is located in valve pocket between open and closed positions movably; Armature, armature is located at movably in valve pocket between initial position and restraining position, spool is pushed to closed position away from pole shoe when initial position by armature, armature contiguous pole shoe and spool is pulled to open position when restraining position, armature when restraining position and pole shoe there is predetermined gap; Armature return springs; Current regulator, current regulator moves between initial position and restraining position by regulating the electric current I being input to coil to control armature,
wherein, the number of turn that F is electromagnetic attraction, S is the cross-section area of one end towards armature of pole shoe, μ is air magnetic permeability, W is described coil.According to the electro-hydraulic proportional valve of the utility model embodiment have good, the stagnant ring of proportionality little, without advantages such as hysteresis.
Description
Technical field
The utility model relates to a kind of flow output element, in particular to a kind of electro-hydraulic proportional valve.
Background technique
Electro-hydraulic proportional valve in correlation technique, when coil electricity, armature is to the motion of pole shoe direction under electromagnetic force, and larger the closer to its electromagnetic force during pole shoe at armature, namely when external input signal is constant, electromagnetic force, but in change, causes proportionality poor.And when after armature and pole shoe adhesive, electric current need drop to minimum armature just can and pole shoe unclamp armature resetted, in armature to-and-fro motion, current variation value differs greatly, and causes stagnant ring large.For this reason, some electro-hydraulic proportional valves are provided with every magnetic limit structure, but do not state from the angle of practical application the gap how regulated between armature and pole shoe, and the hysteresis that electro-hydraulic proportional valve ubiquity is light or heavy.
Model utility content
The utility model is intended to solve one of above-mentioned technical problem in correlation technique at least to a certain extent.For this reason, the utility model proposes a kind of electro-hydraulic proportional valve, this electro-hydraulic proportional valve can from the gap between the angle adjustment armature of practical application and pole shoe, have good, the stagnant ring of proportionality little, without advantages such as hysteresis.
For achieving the above object, the utility model proposes a kind of electro-hydraulic proportional valve, described electro-hydraulic proportional valve comprises: valve pocket, and described valve pocket is provided with import and outlet; Pole shoe, described pole shoe is located on described valve pocket; Coil, described coil winding is on described valve pocket, and described coil is positioned at outside described pole shoe; Spool, described spool is located in described valve pocket movably between the open position being communicated with described import and described outlet and the closed position separating described import and described outlet; Armature, described armature is located at movably in described valve pocket between initial position and restraining position, and described armature is relative with described pole shoe, described armature when described initial position away from described pole shoe, and described spool is pushed to described closed position when described initial position by described armature, described armature is contiguous described pole shoe when described restraining position, and described spool is pulled to described open position when described restraining position by described armature, described armature when described restraining position and described pole shoe there is predetermined gap; Armature return springs, described armature return springs is connected between described armature and described pole shoe, and described armature return springs often pushes described armature to described initial position; Current regulator, described current regulator is connected with described coil, and described current regulator moves between described initial position and described restraining position by regulating the electric current I being input to described coil to control described armature, described in be input to the electric current of described coil
wherein, the number of turn that F is electromagnetic attraction, S is the cross-section area of one end towards described armature of described pole shoe, μ is air magnetic permeability, W is described coil.
According to electro-hydraulic proportional valve of the present utility model, the proportionality of described electro-hydraulic proportional valve can be promoted, reduce stagnant ring, elimination hysteresis during armature motion.
In addition, following additional technical characteristics can also be had according to electro-hydraulic proportional valve of the present utility model:
The elasticity coefficient of described armature return springs is 10-12N/mm.
Described current regulator is by referring to that contact handle is connected with described coil.
The electric current I being input to described coil is adjusted to 500mA-1600mA by described current regulator.
The stroke of described armature between described initial position and described restraining position is 6 millimeters.
One end of the described armature of vicinity of described pole shoe is provided with every magnetic banking stop, is against described on magnetic banking stop when described armature is positioned at described restraining position.
Described armature return springs is spring, one end of the described pole shoe of vicinity of described armature is provided with the first positioning hole, the one end fits of described armature return springs is in described first positioning hole, and the other end of described armature return springs is connected to described on magnetic banking stop.
Be provided with thimble in described spool, described armature is connected with described spool by described thimble.
Described spool is provided with through hole, is connected with thimble return springs between described armature and described thimble, and described thimble is through hole described in shutoff under the effect of described thimble return springs.
Described thimble return springs is spring, one end of the described thimble of vicinity of described armature is provided with the second positioning hole, the one end fits of described thimble return springs is in described second positioning hole, and the other end of described thimble return springs is connected on described thimble.
Accompanying drawing explanation
Fig. 1 is the sectional view of the electro-hydraulic proportional valve according to the utility model embodiment.
Fig. 2 is the stroke versus force characteristic schematic diagram of the electro-hydraulic proportional valve according to the utility model embodiment.
Reference character: electro-hydraulic proportional valve 1, valve pocket 10, import 11, outlet 12, pole shoe 20, banking stop locating slot 21, coil 30, spool 40, through hole 41, armature 50, armature return springs 60, first positioning hole 61, second positioning hole 62, every magnetic banking stop 70, thimble 80, thimble return springs 90.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
Below with reference to the accompanying drawings electro-hydraulic proportional valve 1 according to the utility model embodiment is described.
As depicted in figs. 1 and 2, valve pocket 10, pole shoe 20, coil 30, spool 40, armature 50, armature return springs 60 and current regulator (not shown) is comprised according to the electro-hydraulic proportional valve 1 of the utility model embodiment.
The top of valve pocket 10 is provided with import 11 and outlet 12.Pole shoe 20 is located at the bottom (above-below direction of above-below direction as Fig. 1 is as the criterion) of valve pocket 10.Coil 30 is wrapped on valve pocket 10, and coil 30 is positioned at outside pole shoe 20.Spool 40 be communicated with import 11 and outlet 12 open position and separate import 11 and outlet 12 closed position between be located at movably in valve pocket 10.Armature 50 is located at movably in valve pocket 10 between initial position and restraining position, and armature 50 is relative with pole shoe 20.Armature 50 is when described initial position away from pole shoe 20, and spool 40 is pushed to described closed position when described initial position by armature 50.Armature 50 is contiguous pole shoe 20 when described restraining position, and spool 40 is pulled to described open position when described restraining position by armature 50, armature 50 when described restraining position and pole shoe 20 there is predetermined gap.Armature return springs 60 is connected between armature 50 and pole shoe 20, and armature return springs 60 often pushes armature 50 to described initial position.Described current regulator is connected with coil 30, and described current regulator moves between described initial position and described restraining position by regulating the electric current I being input to coil 30 to control armature 50.The described electric current being input to described coil
wherein, the number of turn that F is electromagnetic attraction, S is the cross-section area (i.e. the gross area of magnetic pole surfaces) of one end towards described armature of described pole shoe, μ is air magnetic permeability, W is described coil.
According to the electro-hydraulic proportional valve 1 of the utility model embodiment, by by spool 40 be communicated with import 11 and outlet 12 open position and separate import 11 and outlet 12 closed position between be arranged on movably in valve pocket 10.Whether can be communicated with, to control the opening and closing of electro-hydraulic proportional valve 1 with outlet 12 by the mobile control import 11 of spool 40.
In addition, claimant obtains the stroke versus force performance plot of electro-hydraulic proportional valve 1 (as shown in Figure 2 by experiment, wherein transverse axis represents the stroke L of armature 50, the longitudinal axis represents electromagnetic attraction F), when phantom line segments represents that stroke is reduced to a certain degree, electromagnetic force is uprushed, have a strong impact on the proportionality of electro-hydraulic proportional valve 1, and increase armature 50 and to reset difficulty, cause stagnant ring to increase.For ensureing that electro-hydraulic proportional valve 1 has good proportionality, in the LA region needing the stroke of armature 50 is fallen in fig. 2, ensure electromagnetic force by the impact of stroke size, and stagnant ring when preventing armature 50 from resetting is excessive.
For this reason, according to the electro-hydraulic proportional valve 1 of the utility model embodiment, by being arranged on movably in valve pocket 10 between initial position and restraining position by armature 50, and make armature 50 when described restraining position and pole shoe 20 has predetermined gap.Not only can prevent the hypotelorism of armature 50 and pole shoe 20 thus and cause the stroke of armature 50 to fall into the phantom line segments region of Fig. 2, suddenly increase to prevent electromagnetic force, and owing to there is predetermined gap between armature 50 and pole shoe 20, even if armature 50 with pole shoe 20 recently time also can not with pole shoe 20 adhesive, armature 50 can be made thus more easily to reset, prevent current variation value in armature 50 to-and-fro motion from having big difference and causing the situation that stagnant ring is large.Can ensure that the stroke of armature 50 falls into S like this
ain region, to make electro-hydraulic proportional valve 1, there is good proportionality and reduce stagnant ring, thus can so that manipulation to electro-hydraulic proportional valve 1.Further, by arranging described current regulator, described current regulator can be utilized to regulate the electric current I be input in the coil 30 of electro-hydraulic proportional valve 1, and according to formula
b=Φ/S, Φ=IW B=IW/S, obtain
wherein, B is magnetic induction intensity (weber/centimetre), S is the gross area (centimetre ^2) of magnetic pole surfaces, μ is air magnetic permeability (prosperous/centimetre), Φ is magnetic flux (wheat), W is coil 30 number of turn (circle).The stroke of armature 50 can be controlled thus, the stroke of armature 50 is made to move to just stopping before phantom line segments in Fig. 2, the position preventing from armature 50 from reaching electromagnetic force uprushing, to ensure that electro-hydraulic proportional valve 1 has good proportionality and less stagnant ring, and promotes the handling of electro-hydraulic proportional valve 1.Therefore, according to the electro-hydraulic proportional valve 1 of the utility model embodiment, can from the minimum clearance of the angle adjustment armature 50 of practical application with pole shoe 20, thus optimize the proportionality of electro-hydraulic proportional valve 1 and reduce the stagnant ring of reset, adhesive is overlapped with reset electromagnetic force-stroke curve, make the manoeuvring performance of electro-hydraulic proportional valve 1 more excellent, have good, the stagnant ring of proportionality little, without advantages such as hysteresis.
Below with reference to the accompanying drawings electro-hydraulic proportional valve 1 according to the utility model specific embodiment is described.
In specific embodiments more of the present utility model, as depicted in figs. 1 and 2, valve pocket 10, pole shoe 20, coil 30, spool 40, armature 50, armature return springs 60 and described current regulator is comprised according to the electro-hydraulic proportional valve 1 of the utility model embodiment.
The elasticity coefficient of armature return springs 60 can be 10-12N/mm.Can be prevented by the rigidity changing armature return springs 60 armature 50 from the final position that armature return springs 60 is compressed is reached phantom line segments region in Fig. 2 thus, uprush to prevent electromagnetic force further.
For example, maximum setting electric current I is 1500mA, and armature 50 is 4.5mm to the stroke of pole shoe 20, the elasticity coefficient of armature return springs 60 is 10N/mm, known electromagnetic attraction F=kx=45N, to ask the stroke after setting to be 3mm, leaves the gap of 1.5mm, keep other constant, set up rigidity k '=F/x '=45/3=15N/mm of armature return springs 60, can meet the demands thus, make ouput force one timing, the rigidity of armature return springs 60 increases, and the stroke of armature 50 shortens.
In concrete examples more of the present utility model, described current regulator can by referring to that contact handle (not shown) is connected with coil 30.Can give described finger contact handle output signal by described current regulator thus, described finger contact handle outputs signal on the coil 30 of electro-hydraulic proportional valve 1, thus realizes the control of output current size.
Alternatively, the electric current I being input to coil 30 can be adjusted to 500mA-1600mA by described current regulator.The stroke of armature 50 can be controlled thus by the size changing electric current, uprush to prevent electromagnetic force.
For example, maximum setting electric current I is 1500mA, armature 50 is 4.5mm to the stroke of pole shoe 20, and the elasticity coefficient of armature return springs 60 is 10N/mm, known electromagnetic attraction F=kx=45N, be 3mm to ask the stroke after setting, leave the gap of 1.5mm, then F '=kx '=30N, by arranging 45/1500^2=30/I ' ^2 above, I '=1200mA, so the motion of setting up that electric current I can limit armature 50 to 1200mA.
Advantageously, as depicted in figs. 1 and 2, the stroke (S of armature 50 between described initial position and described restraining position
a) can be 6 millimeters.The stroke that can control armature 50 thus increases suddenly to prevent electromagnetic force, reduces stagnant ring.
What it will be appreciated by those skilled in the art that is, the position causing electromagnetic force to be uprushed in stroke due to the armature 50 of the electro-hydraulic proportional valve 1 of different size is different, the scope of the elasticity coefficient of above-mentioned armature return springs 60, described current regulator regulate the distance of the scope of electric current, the stroke of armature 50 and described predetermined gap can adjust according to actual conditions, and concrete numerical value can draw by experiment.
Fig. 1 and Fig. 2 shows the electro-hydraulic proportional valve 1 according to the utility model concrete example.As shown in Figure 1, one end (i.e. the upper end of pole shoe 20) of the contiguous armature 50 of pole shoe 20 can be provided with every magnetic banking stop 70, can be against on magnetic banking stop 70 when armature 50 is positioned at described restraining position.Thus can by limit the stroke of armature 50 every magnetic banking stop 70, the position preventing from armature 50 from moving to electromagnetic force uprushing.
Specifically, can be non-magnetic every magnetic banking stop 70.Such as, plastic sheet, copper sheet and aluminium flake etc.The limit effect affected armature 50 by magnetic influence every magnetic banking stop 70 can be prevented thus.Thickness every magnetic banking stop 70 is greater than 1 millimeter, to prevent armature 50 and pole shoe 20 adhesive completely.
Advantageously, as shown in Figure 1, pole shoe 20 can be provided with banking stop locating slot 21, can be engaged in banking stop locating slot 21 every magnetic banking stop 70.
Fig. 1 and Fig. 2 shows the electro-hydraulic proportional valve 1 according to the utility model specific embodiment.As shown in Figure 1, armature return springs 60 can be spring, one end (i.e. the lower end of armature 50) of the contiguous pole shoe 20 of armature 50 can be provided with the first positioning hole 61, one end of armature return springs 60 can be engaged in the first positioning hole 61, and the other end of armature return springs 60 can be connected on magnetic banking stop 70.So that the installation of armature return springs 60, and can ensure the reset effect of armature return springs 60 pairs of armature 50 thus.
Wherein, as shown in Figure 1, can be provided with thimble 80 in spool 40, armature 50 can be connected with spool 40 by thimble 80.Like this can in coil 30 during input current, armature 50 moves to pole shoe 20 thus drives thimble 80 to move together, and thimble 80 is with movable valve plug 40 to move together, thus spool 40 is opened, and realizes the circulation of import 11 and outlet 12.
Advantageously, as shown in Figure 1, spool 40 can be provided with through hole 41, between armature 50 and thimble 80, thimble return springs 90 can be connected with, thimble 80 can under the effect of thimble return springs 90 shutoff through hole 41.Thimble return springs 90 can be utilized thus to make thimble 80 shutoff through hole 41, in case stop-pass hole 41 place reveals and affects the service behaviour of electro-hydraulic proportional valve 1.
Particularly, as shown in Figure 1, thimble return springs 90 can be spring, one end (i.e. the upper end of armature 50) of the contiguous thimble 80 of armature 50 can be provided with the second positioning hole 62, one end of thimble return springs 90 can be engaged in the second positioning hole 62, and the other end of thimble return springs 90 can be connected on thimble 80.Thus can so that the installation of thimble return springs 90.
Alternatively, as shown in Figure 1, outlet 12 can be multiple, and multiple outlet 12 can be arranged along the circumferential interval of valve pocket 10.
Below with reference to Fig. 1 and Fig. 2, the working procedure according to the electro-hydraulic proportional valve 1 of the utility model embodiment is described.
When electro-hydraulic proportional valve 1 is in closed condition, coil 30 no electric circuit, armature 50 is in described initial position under the effect of armature return springs 60, armature 50 promotes thimble 80 and by thimble 80, spool 40 is pushed to described closed position, and simultaneously spool 40 separates import 11 and outlet 12 makes electro-hydraulic proportional valve 1 keep closed condition.Be that coil 30 is powered by described current regulator and described finger contact handle successively, coil 30 produces electromagnetic force and makes armature 50 compress armature return springs 60 to move to described restraining position, by the flexible effect of armature return springs 60, every magnetic banking stop 70, spacing and described current regulator is carried out to the adjustment of electric current to armature 50, control the stroke of armature 50, prevent armature 50 from exceeding described restraining position and with the hypotelorism of pole shoe 20, thus can prevent electromagnetic force from uprushing, ensure that electro-hydraulic proportional valve 1 has good proportionality and less stagnant ring.After coil 30 is energized, armature 50 moves to the process of described restraining position from described initial position, armature 50 pulls thimble 80, and be with movable valve plug 40 movement jointly by thimble 80, spool 40 is made to move to described open position from described closed position, to make import 11 be communicated with outlet 12, thus electro-hydraulic proportional valve 1 is made to be in open mode.
According to the electro-hydraulic proportional valve 1 of the utility model embodiment other form and operation be all known for those of ordinary skills, be not described in detail here.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.In addition, the different embodiment described in this specification or example can carry out engaging and combining by those skilled in the art.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment, revises, replace and modification in scope of the present utility model.
Claims (10)
1. an electro-hydraulic proportional valve, is characterized in that, comprising:
Valve pocket, described valve pocket is provided with import and outlet;
Pole shoe, described pole shoe is located on described valve pocket;
Coil, described coil winding is on described valve pocket and be positioned at outside described pole shoe;
Spool, described spool is located in described valve pocket movably between the open position being communicated with described import and described outlet and the closed position separating described import and described outlet;
Armature, described armature to be located at movably in described valve pocket and relative with described pole shoe between initial position and restraining position, described spool is pushed to described closed position when described initial position away from described pole shoe by described armature, described armature contiguous described pole shoe and described spool is pulled to described open position when described restraining position, described armature when described restraining position and described pole shoe there is predetermined gap;
Armature return springs, described armature return springs to be connected between described armature and described pole shoe and often to push described armature to described initial position;
Current regulator, described current regulator is connected with described coil, and described current regulator moves between described initial position and described restraining position by regulating the electric current I being input to described coil to control described armature, described in be input to the electric current of described coil
wherein, the number of turn that F is electromagnetic attraction, S is the cross-section area of one end towards described armature of described pole shoe, μ is air magnetic permeability, W is described coil.
2. electro-hydraulic proportional valve according to claim 1, is characterized in that, the elasticity coefficient of described armature return springs is 10-12N/mm.
3. electro-hydraulic proportional valve according to claim 1, is characterized in that, described current regulator is by referring to that contact handle is connected with described coil.
4. electro-hydraulic proportional valve according to claim 1, is characterized in that, the electric current I being input to described coil is adjusted to 500mA-1600mA by described current regulator.
5. electro-hydraulic proportional valve according to claim 1, is characterized in that, the stroke of described armature between described initial position and described restraining position is 6 millimeters.
6. electro-hydraulic proportional valve according to claim 1, is characterized in that, one end of the described armature of vicinity of described pole shoe is provided with every magnetic banking stop, is against described on magnetic banking stop when described armature is positioned at described restraining position.
7. electro-hydraulic proportional valve according to claim 6, it is characterized in that, described armature return springs is spring, one end of the described pole shoe of vicinity of described armature is provided with the first positioning hole, and the one end fits of described armature return springs is in described first positioning hole and the other end is connected to described on magnetic banking stop.
8. electro-hydraulic proportional valve according to claim 1, is characterized in that, is provided with thimble in described spool, and described armature is connected with described spool by described thimble.
9. electro-hydraulic proportional valve according to claim 8, is characterized in that, described spool is provided with through hole, is connected with thimble return springs between described armature and described thimble, and described thimble is through hole described in shutoff under the effect of described thimble return springs.
10. electro-hydraulic proportional valve according to claim 9, it is characterized in that, described thimble return springs is spring, one end of the described thimble of vicinity of described armature is provided with the second positioning hole, the one end fits of described thimble return springs in described second positioning hole and the other end be connected on described thimble.
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| CN201420543873.2U CN204187093U (en) | 2014-09-19 | 2014-09-19 | Electro-hydraulic proportional valve |
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| CN201420543873.2U CN204187093U (en) | 2014-09-19 | 2014-09-19 | Electro-hydraulic proportional valve |
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| CN204187093U true CN204187093U (en) | 2015-03-04 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448460A (en) * | 2015-12-11 | 2016-03-30 | 苏州源硕精密模具有限公司 | Proportional electromagnet device |
| CN105443773A (en) * | 2015-12-17 | 2016-03-30 | 上海仪电分析仪器有限公司 | Gas flow control proportional valve |
| CN106762301A (en) * | 2017-01-22 | 2017-05-31 | 无锡威孚高科技集团股份有限公司 | The split type proportional flow control valve of diesel oil high voltage common rail pump |
| CN108167503A (en) * | 2017-11-29 | 2018-06-15 | 北京宇航系统工程研究所 | A kind of high-pressure large-caliber solenoid valve response time control method |
| CN110454306A (en) * | 2019-09-09 | 2019-11-15 | 思达耐精密机电（常熟）有限公司 | A kind of stagnant ring proportion magnetic valve of low discharge |
| CN112555299A (en) * | 2020-12-02 | 2021-03-26 | 安徽江淮汽车集团股份有限公司 | Double-control electromagnetic valve and hydraulic clutch system |
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2014
- 2014-09-19 CN CN201420543873.2U patent/CN204187093U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448460A (en) * | 2015-12-11 | 2016-03-30 | 苏州源硕精密模具有限公司 | Proportional electromagnet device |
| CN105443773A (en) * | 2015-12-17 | 2016-03-30 | 上海仪电分析仪器有限公司 | Gas flow control proportional valve |
| CN106762301A (en) * | 2017-01-22 | 2017-05-31 | 无锡威孚高科技集团股份有限公司 | The split type proportional flow control valve of diesel oil high voltage common rail pump |
| CN108167503A (en) * | 2017-11-29 | 2018-06-15 | 北京宇航系统工程研究所 | A kind of high-pressure large-caliber solenoid valve response time control method |
| CN110454306A (en) * | 2019-09-09 | 2019-11-15 | 思达耐精密机电（常熟）有限公司 | A kind of stagnant ring proportion magnetic valve of low discharge |
| CN112555299A (en) * | 2020-12-02 | 2021-03-26 | 安徽江淮汽车集团股份有限公司 | Double-control electromagnetic valve and hydraulic clutch system |
| CN112555299B (en) * | 2020-12-02 | 2022-06-14 | 安徽江淮汽车集团股份有限公司 | Double-control electromagnetic valve and hydraulic clutch system |
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